diff options
Diffstat (limited to '')
49 files changed, 5164 insertions, 2843 deletions
diff --git a/src/input/ArchiveInputPlugin.cxx b/src/input/ArchiveInputPlugin.cxx deleted file mode 100644 index 5288f2b3b..000000000 --- a/src/input/ArchiveInputPlugin.cxx +++ /dev/null @@ -1,99 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "ArchiveInputPlugin.hxx" -#include "ArchiveDomain.hxx" -#include "ArchiveLookup.hxx" -#include "ArchiveList.hxx" -#include "ArchivePlugin.hxx" -#include "ArchiveFile.hxx" -#include "InputPlugin.hxx" -#include "util/Error.hxx" -#include "fs/Traits.hxx" -#include "Log.hxx" - -#include <glib.h> - -/** - * select correct archive plugin to handle the input stream - * may allow stacking of archive plugins. for example for handling - * tar.gz a gzip handler opens file (through inputfile stream) - * then it opens a tar handler and sets gzip inputstream as - * parent_stream so tar plugin fetches file data from gzip - * plugin and gzip fetches file from disk - */ -static InputStream * -input_archive_open(const char *pathname, - Mutex &mutex, Cond &cond, - Error &error) -{ - const struct archive_plugin *arplug; - InputStream *is; - - if (!PathTraits::IsAbsoluteFS(pathname)) - return nullptr; - - char *pname = g_strdup(pathname); - // archive_lookup will modify pname when true is returned - const char *archive, *filename, *suffix; - if (!archive_lookup(pname, &archive, &filename, &suffix)) { - FormatDebug(archive_domain, - "not an archive, lookup %s failed", pname); - g_free(pname); - return nullptr; - } - - //check which archive plugin to use (by ext) - arplug = archive_plugin_from_suffix(suffix); - if (!arplug) { - FormatWarning(archive_domain, - "can't handle archive %s", archive); - g_free(pname); - return nullptr; - } - - auto file = archive_file_open(arplug, archive, error); - if (file == nullptr) { - g_free(pname); - return nullptr; - } - - //setup fileops - is = file->OpenStream(filename, mutex, cond, error); - g_free(pname); - file->Close(); - - return is; -} - -const InputPlugin input_plugin_archive = { - "archive", - nullptr, - nullptr, - input_archive_open, - nullptr, - nullptr, - nullptr, - nullptr, - nullptr, - nullptr, - nullptr, - nullptr, -}; diff --git a/src/input/ArchiveInputPlugin.hxx b/src/input/ArchiveInputPlugin.hxx deleted file mode 100644 index 9ac70b2fc..000000000 --- a/src/input/ArchiveInputPlugin.hxx +++ /dev/null @@ -1,25 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#ifndef MPD_INPUT_ARCHIVE_HXX -#define MPD_INPUT_ARCHIVE_HXX - -extern const struct InputPlugin input_plugin_archive; - -#endif diff --git a/src/input/CdioParanoiaInputPlugin.cxx b/src/input/CdioParanoiaInputPlugin.cxx deleted file mode 100644 index b3ac57413..000000000 --- a/src/input/CdioParanoiaInputPlugin.cxx +++ /dev/null @@ -1,406 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -/** - * CD-Audio handling (requires libcdio_paranoia) - */ - -#include "config.h" -#include "CdioParanoiaInputPlugin.hxx" -#include "InputStream.hxx" -#include "InputPlugin.hxx" -#include "util/Error.hxx" -#include "util/Domain.hxx" -#include "system/ByteOrder.hxx" -#include "fs/AllocatedPath.hxx" -#include "Log.hxx" -#include "ConfigData.hxx" -#include "ConfigError.hxx" - -#include <stdio.h> -#include <stdint.h> -#include <stddef.h> -#include <string.h> -#include <stdlib.h> -#include <glib.h> -#include <assert.h> - -#ifdef HAVE_CDIO_PARANOIA_PARANOIA_H -#include <cdio/paranoia/paranoia.h> -#else -#include <cdio/paranoia.h> -#endif - -#include <cdio/cd_types.h> - -struct CdioParanoiaInputStream { - InputStream base; - - cdrom_drive_t *drv; - CdIo_t *cdio; - cdrom_paranoia_t *para; - - lsn_t lsn_from, lsn_to; - int lsn_relofs; - - int trackno; - - char buffer[CDIO_CD_FRAMESIZE_RAW]; - int buffer_lsn; - - CdioParanoiaInputStream(const char *uri, Mutex &mutex, Cond &cond, - int _trackno) - :base(input_plugin_cdio_paranoia, uri, mutex, cond), - drv(nullptr), cdio(nullptr), para(nullptr), - trackno(_trackno) - { - } - - ~CdioParanoiaInputStream() { - if (para != nullptr) - cdio_paranoia_free(para); - if (drv != nullptr) - cdio_cddap_close_no_free_cdio(drv); - if (cdio != nullptr) - cdio_destroy(cdio); - } -}; - -static constexpr Domain cdio_domain("cdio"); - -static bool default_reverse_endian; - -static bool -input_cdio_init(const config_param ¶m, Error &error) -{ - const char *value = param.GetBlockValue("default_byte_order"); - if (value != nullptr) { - if (strcmp(value, "little_endian") == 0) - default_reverse_endian = IsBigEndian(); - else if (strcmp(value, "big_endian") == 0) - default_reverse_endian = IsLittleEndian(); - else { - error.Format(config_domain, 0, - "Unrecognized 'default_byte_order' setting: %s", - value); - return false; - } - } - - return true; -} - -static void -input_cdio_close(InputStream *is) -{ - CdioParanoiaInputStream *i = (CdioParanoiaInputStream *)is; - - delete i; -} - -struct cdio_uri { - char device[64]; - int track; -}; - -static bool -parse_cdio_uri(struct cdio_uri *dest, const char *src, Error &error) -{ - if (!g_str_has_prefix(src, "cdda://")) - return false; - - src += 7; - - if (*src == 0) { - /* play the whole CD in the default drive */ - dest->device[0] = 0; - dest->track = -1; - return true; - } - - const char *slash = strrchr(src, '/'); - if (slash == nullptr) { - /* play the whole CD in the specified drive */ - g_strlcpy(dest->device, src, sizeof(dest->device)); - dest->track = -1; - return true; - } - - size_t device_length = slash - src; - if (device_length >= sizeof(dest->device)) - device_length = sizeof(dest->device) - 1; - - memcpy(dest->device, src, device_length); - dest->device[device_length] = 0; - - const char *track = slash + 1; - - char *endptr; - dest->track = strtoul(track, &endptr, 10); - if (*endptr != 0) { - error.Set(cdio_domain, "Malformed track number"); - return false; - } - - if (endptr == track) - /* play the whole CD */ - dest->track = -1; - - return true; -} - -static AllocatedPath -cdio_detect_device(void) -{ - char **devices = cdio_get_devices_with_cap(nullptr, CDIO_FS_AUDIO, - false); - if (devices == nullptr) - return AllocatedPath::Null(); - - AllocatedPath path = AllocatedPath::FromFS(devices[0]); - cdio_free_device_list(devices); - return path; -} - -static InputStream * -input_cdio_open(const char *uri, - Mutex &mutex, Cond &cond, - Error &error) -{ - struct cdio_uri parsed_uri; - if (!parse_cdio_uri(&parsed_uri, uri, error)) - return nullptr; - - CdioParanoiaInputStream *i = - new CdioParanoiaInputStream(uri, mutex, cond, - parsed_uri.track); - - /* get list of CD's supporting CD-DA */ - const AllocatedPath device = parsed_uri.device[0] != 0 - ? AllocatedPath::FromFS(parsed_uri.device) - : cdio_detect_device(); - if (device.IsNull()) { - error.Set(cdio_domain, - "Unable find or access a CD-ROM drive with an audio CD in it."); - delete i; - return nullptr; - } - - /* Found such a CD-ROM with a CD-DA loaded. Use the first drive in the list. */ - i->cdio = cdio_open(device.c_str(), DRIVER_UNKNOWN); - - i->drv = cdio_cddap_identify_cdio(i->cdio, 1, nullptr); - - if ( !i->drv ) { - error.Set(cdio_domain, "Unable to identify audio CD disc."); - delete i; - return nullptr; - } - - cdda_verbose_set(i->drv, CDDA_MESSAGE_FORGETIT, CDDA_MESSAGE_FORGETIT); - - if ( 0 != cdio_cddap_open(i->drv) ) { - error.Set(cdio_domain, "Unable to open disc."); - delete i; - return nullptr; - } - - bool reverse_endian; - switch (data_bigendianp(i->drv)) { - case -1: - LogDebug(cdio_domain, "drive returns unknown audio data"); - reverse_endian = default_reverse_endian; - break; - - case 0: - LogDebug(cdio_domain, "drive returns audio data Little Endian"); - reverse_endian = IsBigEndian(); - break; - - case 1: - LogDebug(cdio_domain, "drive returns audio data Big Endian"); - reverse_endian = IsLittleEndian(); - break; - - default: - error.Format(cdio_domain, "Drive returns unknown data type %d", - data_bigendianp(i->drv)); - delete i; - return nullptr; - } - - i->lsn_relofs = 0; - - if (i->trackno >= 0) { - i->lsn_from = cdio_get_track_lsn(i->cdio, i->trackno); - i->lsn_to = cdio_get_track_last_lsn(i->cdio, i->trackno); - } else { - i->lsn_from = 0; - i->lsn_to = cdio_get_disc_last_lsn(i->cdio); - } - - i->para = cdio_paranoia_init(i->drv); - - /* Set reading mode for full paranoia, but allow skipping sectors. */ - paranoia_modeset(i->para, PARANOIA_MODE_FULL^PARANOIA_MODE_NEVERSKIP); - - /* seek to beginning of the track */ - cdio_paranoia_seek(i->para, i->lsn_from, SEEK_SET); - - i->base.ready = true; - i->base.seekable = true; - i->base.size = (i->lsn_to - i->lsn_from + 1) * CDIO_CD_FRAMESIZE_RAW; - - /* hack to make MPD select the "pcm" decoder plugin */ - i->base.mime = reverse_endian - ? "audio/x-mpd-cdda-pcm-reverse" - : "audio/x-mpd-cdda-pcm"; - - return &i->base; -} - -static bool -input_cdio_seek(InputStream *is, - InputPlugin::offset_type offset, int whence, Error &error) -{ - CdioParanoiaInputStream *cis = (CdioParanoiaInputStream *)is; - - /* calculate absolute offset */ - switch (whence) { - case SEEK_SET: - break; - case SEEK_CUR: - offset += cis->base.offset; - break; - case SEEK_END: - offset += cis->base.size; - break; - } - - if (offset < 0 || offset > cis->base.size) { - error.Format(cdio_domain, "Invalid offset to seek %ld (%ld)", - (long int)offset, (long int)cis->base.size); - return false; - } - - /* simple case */ - if (offset == cis->base.offset) - return true; - - /* calculate current LSN */ - cis->lsn_relofs = offset / CDIO_CD_FRAMESIZE_RAW; - cis->base.offset = offset; - - cdio_paranoia_seek(cis->para, cis->lsn_from + cis->lsn_relofs, SEEK_SET); - - return true; -} - -static size_t -input_cdio_read(InputStream *is, void *ptr, size_t length, - Error &error) -{ - CdioParanoiaInputStream *cis = (CdioParanoiaInputStream *)is; - size_t nbytes = 0; - int diff; - size_t len, maxwrite; - int16_t *rbuf; - char *s_err, *s_mess; - char *wptr = (char *) ptr; - - while (length > 0) { - - - /* end of track ? */ - if (cis->lsn_from + cis->lsn_relofs > cis->lsn_to) - break; - - //current sector was changed ? - if (cis->lsn_relofs != cis->buffer_lsn) { - rbuf = cdio_paranoia_read(cis->para, nullptr); - - s_err = cdda_errors(cis->drv); - if (s_err) { - FormatError(cdio_domain, - "paranoia_read: %s", s_err); - free(s_err); - } - s_mess = cdda_messages(cis->drv); - if (s_mess) { - free(s_mess); - } - if (!rbuf) { - error.Set(cdio_domain, - "paranoia read error. Stopping."); - return 0; - } - //store current buffer - memcpy(cis->buffer, rbuf, CDIO_CD_FRAMESIZE_RAW); - cis->buffer_lsn = cis->lsn_relofs; - } else { - //use cached sector - rbuf = (int16_t*) cis->buffer; - } - - //correct offset - diff = cis->base.offset - cis->lsn_relofs * CDIO_CD_FRAMESIZE_RAW; - - assert(diff >= 0 && diff < CDIO_CD_FRAMESIZE_RAW); - - maxwrite = CDIO_CD_FRAMESIZE_RAW - diff; //# of bytes pending in current buffer - len = (length < maxwrite? length : maxwrite); - - //skip diff bytes from this lsn - memcpy(wptr, ((char*)rbuf) + diff, len); - //update pointer - wptr += len; - nbytes += len; - - //update offset - cis->base.offset += len; - cis->lsn_relofs = cis->base.offset / CDIO_CD_FRAMESIZE_RAW; - //update length - length -= len; - } - - return nbytes; -} - -static bool -input_cdio_eof(InputStream *is) -{ - CdioParanoiaInputStream *cis = (CdioParanoiaInputStream *)is; - - return (cis->lsn_from + cis->lsn_relofs > cis->lsn_to); -} - -const InputPlugin input_plugin_cdio_paranoia = { - "cdio_paranoia", - input_cdio_init, - nullptr, - input_cdio_open, - input_cdio_close, - nullptr, - nullptr, - nullptr, - nullptr, - input_cdio_read, - input_cdio_eof, - input_cdio_seek, -}; diff --git a/src/input/CdioParanoiaInputPlugin.hxx b/src/input/CdioParanoiaInputPlugin.hxx deleted file mode 100644 index 847802a48..000000000 --- a/src/input/CdioParanoiaInputPlugin.hxx +++ /dev/null @@ -1,28 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#ifndef MPD_CDIO_PARANOIA_INPUT_PLUGIN_HXX -#define MPD_CDIO_PARANOIA_INPUT_PLUGIN_HXX - -/** - * An input plugin based on libcdio_paranoia library. - */ -extern const struct InputPlugin input_plugin_cdio_paranoia; - -#endif diff --git a/src/input/CurlInputPlugin.cxx b/src/input/CurlInputPlugin.cxx deleted file mode 100644 index b78545951..000000000 --- a/src/input/CurlInputPlugin.cxx +++ /dev/null @@ -1,1166 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "CurlInputPlugin.hxx" -#include "InputStream.hxx" -#include "InputPlugin.hxx" -#include "ConfigGlobal.hxx" -#include "ConfigData.hxx" -#include "tag/Tag.hxx" -#include "IcyMetaDataParser.hxx" -#include "event/SocketMonitor.hxx" -#include "event/TimeoutMonitor.hxx" -#include "event/Call.hxx" -#include "IOThread.hxx" -#include "util/ASCII.hxx" -#include "util/CharUtil.hxx" -#include "util/NumberParser.hxx" -#include "util/Error.hxx" -#include "util/Domain.hxx" -#include "Log.hxx" - -#include <assert.h> - -#if defined(WIN32) - #include <winsock2.h> -#else - #include <sys/select.h> -#endif - -#include <string.h> -#include <errno.h> - -#include <list> - -#include <curl/curl.h> -#include <glib.h> - -#if LIBCURL_VERSION_NUM < 0x071200 -#error libcurl is too old -#endif - -/** - * Do not buffer more than this number of bytes. It should be a - * reasonable limit that doesn't make low-end machines suffer too - * much, but doesn't cause stuttering on high-latency lines. - */ -static const size_t CURL_MAX_BUFFERED = 512 * 1024; - -/** - * Resume the stream at this number of bytes after it has been paused. - */ -static const size_t CURL_RESUME_AT = 384 * 1024; - -/** - * Buffers created by input_curl_writefunction(). - */ -class CurlInputBuffer { - /** size of the payload */ - size_t size; - - /** how much has been consumed yet? */ - size_t consumed; - - /** the payload */ - uint8_t *data; - -public: - CurlInputBuffer(const void *_data, size_t _size) - :size(_size), consumed(0), data(new uint8_t[size]) { - memcpy(data, _data, size); - } - - ~CurlInputBuffer() { - delete[] data; - } - - CurlInputBuffer(const CurlInputBuffer &) = delete; - CurlInputBuffer &operator=(const CurlInputBuffer &) = delete; - - const void *Begin() const { - return data + consumed; - } - - size_t TotalSize() const { - return size; - } - - size_t Available() const { - return size - consumed; - } - - /** - * Mark a part of the buffer as consumed. - * - * @return false if the buffer is now empty - */ - bool Consume(size_t length) { - assert(consumed < size); - - consumed += length; - if (consumed < size) - return true; - - assert(consumed == size); - return false; - } - - bool Read(void *dest, size_t length) { - assert(consumed + length <= size); - - memcpy(dest, data + consumed, length); - return Consume(length); - } -}; - -struct input_curl { - InputStream base; - - /* some buffers which were passed to libcurl, which we have - too free */ - char range[32]; - struct curl_slist *request_headers; - - /** the curl handles */ - CURL *easy; - - /** list of buffers, where input_curl_writefunction() appends - to, and input_curl_read() reads from them */ - std::list<CurlInputBuffer> buffers; - - /** - * Is the connection currently paused? That happens when the - * buffer was getting too large. It will be unpaused when the - * buffer is below the threshold again. - */ - bool paused; - - /** error message provided by libcurl */ - char error[CURL_ERROR_SIZE]; - - /** parser for icy-metadata */ - IcyMetaDataParser icy; - - /** the stream name from the icy-name response header */ - std::string meta_name; - - /** the tag object ready to be requested via - InputStream::ReadTag() */ - Tag *tag; - - Error postponed_error; - - input_curl(const char *url, Mutex &mutex, Cond &cond) - :base(input_plugin_curl, url, mutex, cond), - request_headers(nullptr), - paused(false), - tag(nullptr) {} - - ~input_curl(); - - input_curl(const input_curl &) = delete; - input_curl &operator=(const input_curl &) = delete; -}; - -class CurlMulti; - -/** - * Monitor for one socket created by CURL. - */ -class CurlSocket final : SocketMonitor { - CurlMulti &multi; - -public: - CurlSocket(CurlMulti &_multi, EventLoop &_loop, int _fd) - :SocketMonitor(_fd, _loop), multi(_multi) {} - - ~CurlSocket() { - /* TODO: sometimes, CURL uses CURL_POLL_REMOVE after - closing the socket, and sometimes, it uses - CURL_POLL_REMOVE just to move the (still open) - connection to the pool; in the first case, - Abandon() would be most appropriate, but it breaks - the second case - is that a CURL bug? is there a - better solution? */ - - Steal(); - } - - /** - * Callback function for CURLMOPT_SOCKETFUNCTION. - */ - static int SocketFunction(CURL *easy, - curl_socket_t s, int action, - void *userp, void *socketp); - - virtual bool OnSocketReady(unsigned flags) override; - -private: - static constexpr int FlagsToCurlCSelect(unsigned flags) { - return (flags & (READ | HANGUP) ? CURL_CSELECT_IN : 0) | - (flags & WRITE ? CURL_CSELECT_OUT : 0) | - (flags & ERROR ? CURL_CSELECT_ERR : 0); - } - - gcc_const - static unsigned CurlPollToFlags(int action) { - switch (action) { - case CURL_POLL_NONE: - return 0; - - case CURL_POLL_IN: - return READ; - - case CURL_POLL_OUT: - return WRITE; - - case CURL_POLL_INOUT: - return READ|WRITE; - } - - assert(false); - gcc_unreachable(); - } -}; - -/** - * Manager for the global CURLM object. - */ -class CurlMulti final : private TimeoutMonitor { - CURLM *const multi; - -public: - CurlMulti(EventLoop &_loop, CURLM *_multi); - - ~CurlMulti() { - curl_multi_cleanup(multi); - } - - bool Add(input_curl *c, Error &error); - void Remove(input_curl *c); - - /** - * Check for finished HTTP responses. - * - * Runs in the I/O thread. The caller must not hold locks. - */ - void ReadInfo(); - - void Assign(curl_socket_t fd, CurlSocket &cs) { - curl_multi_assign(multi, fd, &cs); - } - - void SocketAction(curl_socket_t fd, int ev_bitmask); - - void InvalidateSockets() { - SocketAction(CURL_SOCKET_TIMEOUT, 0); - } - - /** - * This is a kludge to allow pausing/resuming a stream with - * libcurl < 7.32.0. Read the curl_easy_pause manpage for - * more information. - */ - void ResumeSockets() { - int running_handles; - curl_multi_socket_all(multi, &running_handles); - } - -private: - static int TimerFunction(CURLM *multi, long timeout_ms, void *userp); - - virtual void OnTimeout() override; -}; - -/** - * libcurl version number encoded in a 24 bit integer. - */ -static unsigned curl_version_num; - -/** libcurl should accept "ICY 200 OK" */ -static struct curl_slist *http_200_aliases; - -/** HTTP proxy settings */ -static const char *proxy, *proxy_user, *proxy_password; -static unsigned proxy_port; - -static CurlMulti *curl_multi; - -static constexpr Domain http_domain("http"); -static constexpr Domain curl_domain("curl"); -static constexpr Domain curlm_domain("curlm"); - -CurlMulti::CurlMulti(EventLoop &_loop, CURLM *_multi) - :TimeoutMonitor(_loop), multi(_multi) -{ - curl_multi_setopt(multi, CURLMOPT_SOCKETFUNCTION, - CurlSocket::SocketFunction); - curl_multi_setopt(multi, CURLMOPT_SOCKETDATA, this); - - curl_multi_setopt(multi, CURLMOPT_TIMERFUNCTION, TimerFunction); - curl_multi_setopt(multi, CURLMOPT_TIMERDATA, this); -} - -/** - * Find a request by its CURL "easy" handle. - * - * Runs in the I/O thread. No lock needed. - */ -gcc_pure -static struct input_curl * -input_curl_find_request(CURL *easy) -{ - assert(io_thread_inside()); - - void *p; - CURLcode code = curl_easy_getinfo(easy, CURLINFO_PRIVATE, &p); - if (code != CURLE_OK) - return nullptr; - - return (input_curl *)p; -} - -static void -input_curl_resume(struct input_curl *c) -{ - assert(io_thread_inside()); - - if (c->paused) { - c->paused = false; - curl_easy_pause(c->easy, CURLPAUSE_CONT); - - if (curl_version_num < 0x072000) - /* libcurl older than 7.32.0 does not update - its sockets after curl_easy_pause(); force - libcurl to do it now */ - curl_multi->ResumeSockets(); - - curl_multi->InvalidateSockets(); - } -} - -int -CurlSocket::SocketFunction(gcc_unused CURL *easy, - curl_socket_t s, int action, - void *userp, void *socketp) { - CurlMulti &multi = *(CurlMulti *)userp; - CurlSocket *cs = (CurlSocket *)socketp; - - assert(io_thread_inside()); - - if (action == CURL_POLL_REMOVE) { - delete cs; - return 0; - } - - if (cs == nullptr) { - cs = new CurlSocket(multi, io_thread_get(), s); - multi.Assign(s, *cs); - } else { -#ifdef USE_EPOLL - /* when using epoll, we need to unregister the socket - each time this callback is invoked, because older - CURL versions may omit the CURL_POLL_REMOVE call - when the socket has been closed and recreated with - the same file number (bug found in CURL 7.26, CURL - 7.33 not affected); in that case, epoll refuses the - EPOLL_CTL_MOD because it does not know the new - socket yet */ - cs->Cancel(); -#endif - } - - unsigned flags = CurlPollToFlags(action); - if (flags != 0) - cs->Schedule(flags); - return 0; -} - -bool -CurlSocket::OnSocketReady(unsigned flags) -{ - assert(io_thread_inside()); - - multi.SocketAction(Get(), FlagsToCurlCSelect(flags)); - return true; -} - -/** - * Runs in the I/O thread. No lock needed. - */ -inline bool -CurlMulti::Add(struct input_curl *c, Error &error) -{ - assert(io_thread_inside()); - assert(c != nullptr); - assert(c->easy != nullptr); - - CURLMcode mcode = curl_multi_add_handle(multi, c->easy); - if (mcode != CURLM_OK) { - error.Format(curlm_domain, mcode, - "curl_multi_add_handle() failed: %s", - curl_multi_strerror(mcode)); - return false; - } - - InvalidateSockets(); - return true; -} - -/** - * Call input_curl_easy_add() in the I/O thread. May be called from - * any thread. Caller must not hold a mutex. - */ -static bool -input_curl_easy_add_indirect(struct input_curl *c, Error &error) -{ - assert(c != nullptr); - assert(c->easy != nullptr); - - bool result; - BlockingCall(io_thread_get(), [c, &error, &result](){ - result = curl_multi->Add(c, error); - }); - return result; -} - -inline void -CurlMulti::Remove(input_curl *c) -{ - curl_multi_remove_handle(multi, c->easy); -} - -/** - * Frees the current "libcurl easy" handle, and everything associated - * with it. - * - * Runs in the I/O thread. - */ -static void -input_curl_easy_free(struct input_curl *c) -{ - assert(io_thread_inside()); - assert(c != nullptr); - - if (c->easy == nullptr) - return; - - curl_multi->Remove(c); - - curl_easy_cleanup(c->easy); - c->easy = nullptr; - - curl_slist_free_all(c->request_headers); - c->request_headers = nullptr; -} - -/** - * Frees the current "libcurl easy" handle, and everything associated - * with it. - * - * The mutex must not be locked. - */ -static void -input_curl_easy_free_indirect(struct input_curl *c) -{ - BlockingCall(io_thread_get(), [c](){ - input_curl_easy_free(c); - curl_multi->InvalidateSockets(); - }); - - assert(c->easy == nullptr); -} - -/** - * A HTTP request is finished. - * - * Runs in the I/O thread. The caller must not hold locks. - */ -static void -input_curl_request_done(struct input_curl *c, CURLcode result, long status) -{ - assert(io_thread_inside()); - assert(c != nullptr); - assert(c->easy == nullptr); - assert(!c->postponed_error.IsDefined()); - - const ScopeLock protect(c->base.mutex); - - if (result != CURLE_OK) { - c->postponed_error.Format(curl_domain, result, - "curl failed: %s", c->error); - } else if (status < 200 || status >= 300) { - c->postponed_error.Format(http_domain, status, - "got HTTP status %ld", - status); - } - - c->base.ready = true; - - c->base.cond.broadcast(); -} - -static void -input_curl_handle_done(CURL *easy_handle, CURLcode result) -{ - struct input_curl *c = input_curl_find_request(easy_handle); - assert(c != nullptr); - - long status = 0; - curl_easy_getinfo(easy_handle, CURLINFO_RESPONSE_CODE, &status); - - input_curl_easy_free(c); - input_curl_request_done(c, result, status); -} - -void -CurlMulti::SocketAction(curl_socket_t fd, int ev_bitmask) -{ - int running_handles; - CURLMcode mcode = curl_multi_socket_action(multi, fd, ev_bitmask, - &running_handles); - if (mcode != CURLM_OK) - FormatError(curlm_domain, - "curl_multi_socket_action() failed: %s", - curl_multi_strerror(mcode)); - - ReadInfo(); -} - -/** - * Check for finished HTTP responses. - * - * Runs in the I/O thread. The caller must not hold locks. - */ -inline void -CurlMulti::ReadInfo() -{ - assert(io_thread_inside()); - - CURLMsg *msg; - int msgs_in_queue; - - while ((msg = curl_multi_info_read(multi, - &msgs_in_queue)) != nullptr) { - if (msg->msg == CURLMSG_DONE) - input_curl_handle_done(msg->easy_handle, msg->data.result); - } -} - -int -CurlMulti::TimerFunction(gcc_unused CURLM *_multi, long timeout_ms, void *userp) -{ - CurlMulti &multi = *(CurlMulti *)userp; - assert(_multi == multi.multi); - - if (timeout_ms < 0) { - multi.Cancel(); - return 0; - } - - if (timeout_ms >= 0 && timeout_ms < 10) - /* CURL 7.21.1 likes to report "timeout=0", which - means we're running in a busy loop. Quite a bad - idea to waste so much CPU. Let's use a lower limit - of 10ms. */ - timeout_ms = 10; - - multi.Schedule(timeout_ms); - return 0; -} - -void -CurlMulti::OnTimeout() -{ - SocketAction(CURL_SOCKET_TIMEOUT, 0); -} - -/* - * InputPlugin methods - * - */ - -static bool -input_curl_init(const config_param ¶m, Error &error) -{ - CURLcode code = curl_global_init(CURL_GLOBAL_ALL); - if (code != CURLE_OK) { - error.Format(curl_domain, code, - "curl_global_init() failed: %s", - curl_easy_strerror(code)); - return false; - } - - const auto version_info = curl_version_info(CURLVERSION_FIRST); - if (version_info != nullptr) { - FormatDebug(curl_domain, "version %s", version_info->version); - if (version_info->features & CURL_VERSION_SSL) - FormatDebug(curl_domain, "with %s", - version_info->ssl_version); - - curl_version_num = version_info->version_num; - } - - http_200_aliases = curl_slist_append(http_200_aliases, "ICY 200 OK"); - - proxy = param.GetBlockValue("proxy"); - proxy_port = param.GetBlockValue("proxy_port", 0u); - proxy_user = param.GetBlockValue("proxy_user"); - proxy_password = param.GetBlockValue("proxy_password"); - - if (proxy == nullptr) { - /* deprecated proxy configuration */ - proxy = config_get_string(CONF_HTTP_PROXY_HOST, nullptr); - proxy_port = config_get_positive(CONF_HTTP_PROXY_PORT, 0); - proxy_user = config_get_string(CONF_HTTP_PROXY_USER, nullptr); - proxy_password = config_get_string(CONF_HTTP_PROXY_PASSWORD, - ""); - } - - CURLM *multi = curl_multi_init(); - if (multi == nullptr) { - error.Set(curl_domain, 0, "curl_multi_init() failed"); - return false; - } - - curl_multi = new CurlMulti(io_thread_get(), multi); - return true; -} - -static void -input_curl_finish(void) -{ - BlockingCall(io_thread_get(), [](){ - delete curl_multi; - }); - - curl_slist_free_all(http_200_aliases); - - curl_global_cleanup(); -} - -/** - * Determine the total sizes of all buffers, including portions that - * have already been consumed. - * - * The caller must lock the mutex. - */ -gcc_pure -static size_t -curl_total_buffer_size(const struct input_curl *c) -{ - size_t total = 0; - - for (const auto &i : c->buffers) - total += i.TotalSize(); - - return total; -} - -input_curl::~input_curl() -{ - delete tag; - - input_curl_easy_free_indirect(this); -} - -static bool -input_curl_check(InputStream *is, Error &error) -{ - struct input_curl *c = (struct input_curl *)is; - - bool success = !c->postponed_error.IsDefined(); - if (!success) { - error = std::move(c->postponed_error); - c->postponed_error.Clear(); - } - - return success; -} - -static Tag * -input_curl_tag(InputStream *is) -{ - struct input_curl *c = (struct input_curl *)is; - Tag *tag = c->tag; - - c->tag = nullptr; - return tag; -} - -static bool -fill_buffer(struct input_curl *c, Error &error) -{ - while (c->easy != nullptr && c->buffers.empty()) - c->base.cond.wait(c->base.mutex); - - if (c->postponed_error.IsDefined()) { - error = std::move(c->postponed_error); - c->postponed_error.Clear(); - return false; - } - - return !c->buffers.empty(); -} - -static size_t -read_from_buffer(IcyMetaDataParser &icy, std::list<CurlInputBuffer> &buffers, - void *dest0, size_t length) -{ - auto &buffer = buffers.front(); - uint8_t *dest = (uint8_t *)dest0; - size_t nbytes = 0; - - if (length > buffer.Available()) - length = buffer.Available(); - - while (true) { - size_t chunk; - - chunk = icy.Data(length); - if (chunk > 0) { - const bool empty = !buffer.Read(dest, chunk); - - nbytes += chunk; - dest += chunk; - length -= chunk; - - if (empty) { - buffers.pop_front(); - break; - } - - if (length == 0) - break; - } - - chunk = icy.Meta(buffer.Begin(), length); - if (chunk > 0) { - const bool empty = !buffer.Consume(chunk); - - length -= chunk; - - if (empty) { - buffers.pop_front(); - break; - } - - if (length == 0) - break; - } - } - - return nbytes; -} - -static void -copy_icy_tag(struct input_curl *c) -{ - Tag *tag = c->icy.ReadTag(); - - if (tag == nullptr) - return; - - delete c->tag; - - if (!c->meta_name.empty() && !tag->HasType(TAG_NAME)) - tag->AddItem(TAG_NAME, c->meta_name.c_str()); - - c->tag = tag; -} - -static bool -input_curl_available(InputStream *is) -{ - struct input_curl *c = (struct input_curl *)is; - - return c->postponed_error.IsDefined() || c->easy == nullptr || - !c->buffers.empty(); -} - -static size_t -input_curl_read(InputStream *is, void *ptr, size_t size, - Error &error) -{ - struct input_curl *c = (struct input_curl *)is; - bool success; - size_t nbytes = 0; - char *dest = (char *)ptr; - - do { - /* fill the buffer */ - - success = fill_buffer(c, error); - if (!success) - return 0; - - /* send buffer contents */ - - while (size > 0 && !c->buffers.empty()) { - size_t copy = read_from_buffer(c->icy, c->buffers, - dest + nbytes, size); - - nbytes += copy; - size -= copy; - } - } while (nbytes == 0); - - if (c->icy.IsDefined()) - copy_icy_tag(c); - - is->offset += (InputPlugin::offset_type)nbytes; - - if (c->paused && curl_total_buffer_size(c) < CURL_RESUME_AT) { - c->base.mutex.unlock(); - - BlockingCall(io_thread_get(), [c](){ - input_curl_resume(c); - }); - - c->base.mutex.lock(); - } - - return nbytes; -} - -static void -input_curl_close(InputStream *is) -{ - struct input_curl *c = (struct input_curl *)is; - - delete c; -} - -static bool -input_curl_eof(gcc_unused InputStream *is) -{ - struct input_curl *c = (struct input_curl *)is; - - return c->easy == nullptr && c->buffers.empty(); -} - -/** called by curl when new data is available */ -static size_t -input_curl_headerfunction(void *ptr, size_t size, size_t nmemb, void *stream) -{ - struct input_curl *c = (struct input_curl *)stream; - char name[64]; - - size *= nmemb; - - const char *header = (const char *)ptr; - const char *end = header + size; - - const char *value = (const char *)memchr(header, ':', size); - if (value == nullptr || (size_t)(value - header) >= sizeof(name)) - return size; - - memcpy(name, header, value - header); - name[value - header] = 0; - - /* skip the colon */ - - ++value; - - /* strip the value */ - - while (value < end && IsWhitespaceOrNull(*value)) - ++value; - - while (end > value && IsWhitespaceOrNull(end[-1])) - --end; - - if (StringEqualsCaseASCII(name, "accept-ranges")) { - /* a stream with icy-metadata is not seekable */ - if (!c->icy.IsDefined()) - c->base.seekable = true; - } else if (StringEqualsCaseASCII(name, "content-length")) { - char buffer[64]; - - if ((size_t)(end - header) >= sizeof(buffer)) - return size; - - memcpy(buffer, value, end - value); - buffer[end - value] = 0; - - c->base.size = c->base.offset + ParseUint64(buffer); - } else if (StringEqualsCaseASCII(name, "content-type")) { - c->base.mime.assign(value, end); - } else if (StringEqualsCaseASCII(name, "icy-name") || - StringEqualsCaseASCII(name, "ice-name") || - StringEqualsCaseASCII(name, "x-audiocast-name")) { - c->meta_name.assign(value, end); - - delete c->tag; - - c->tag = new Tag(); - c->tag->AddItem(TAG_NAME, c->meta_name.c_str()); - } else if (StringEqualsCaseASCII(name, "icy-metaint")) { - char buffer[64]; - size_t icy_metaint; - - if ((size_t)(end - header) >= sizeof(buffer) || - c->icy.IsDefined()) - return size; - - memcpy(buffer, value, end - value); - buffer[end - value] = 0; - - icy_metaint = ParseUint64(buffer); - FormatDebug(curl_domain, "icy-metaint=%zu", icy_metaint); - - if (icy_metaint > 0) { - c->icy.Start(icy_metaint); - - /* a stream with icy-metadata is not - seekable */ - c->base.seekable = false; - } - } - - return size; -} - -/** called by curl when new data is available */ -static size_t -input_curl_writefunction(void *ptr, size_t size, size_t nmemb, void *stream) -{ - struct input_curl *c = (struct input_curl *)stream; - - size *= nmemb; - if (size == 0) - return 0; - - const ScopeLock protect(c->base.mutex); - - if (curl_total_buffer_size(c) + size >= CURL_MAX_BUFFERED) { - c->paused = true; - return CURL_WRITEFUNC_PAUSE; - } - - c->buffers.emplace_back(ptr, size); - c->base.ready = true; - - c->base.cond.broadcast(); - return size; -} - -static bool -input_curl_easy_init(struct input_curl *c, Error &error) -{ - CURLcode code; - - c->easy = curl_easy_init(); - if (c->easy == nullptr) { - error.Set(curl_domain, "curl_easy_init() failed"); - return false; - } - - curl_easy_setopt(c->easy, CURLOPT_PRIVATE, (void *)c); - curl_easy_setopt(c->easy, CURLOPT_USERAGENT, - "Music Player Daemon " VERSION); - curl_easy_setopt(c->easy, CURLOPT_HEADERFUNCTION, - input_curl_headerfunction); - curl_easy_setopt(c->easy, CURLOPT_WRITEHEADER, c); - curl_easy_setopt(c->easy, CURLOPT_WRITEFUNCTION, - input_curl_writefunction); - curl_easy_setopt(c->easy, CURLOPT_WRITEDATA, c); - curl_easy_setopt(c->easy, CURLOPT_HTTP200ALIASES, http_200_aliases); - curl_easy_setopt(c->easy, CURLOPT_FOLLOWLOCATION, 1); - curl_easy_setopt(c->easy, CURLOPT_NETRC, 1); - curl_easy_setopt(c->easy, CURLOPT_MAXREDIRS, 5); - curl_easy_setopt(c->easy, CURLOPT_FAILONERROR, true); - curl_easy_setopt(c->easy, CURLOPT_ERRORBUFFER, c->error); - curl_easy_setopt(c->easy, CURLOPT_NOPROGRESS, 1l); - curl_easy_setopt(c->easy, CURLOPT_NOSIGNAL, 1l); - curl_easy_setopt(c->easy, CURLOPT_CONNECTTIMEOUT, 10l); - - if (proxy != nullptr) - curl_easy_setopt(c->easy, CURLOPT_PROXY, proxy); - - if (proxy_port > 0) - curl_easy_setopt(c->easy, CURLOPT_PROXYPORT, (long)proxy_port); - - if (proxy_user != nullptr && proxy_password != nullptr) { - char proxy_auth_str[1024]; - snprintf(proxy_auth_str, sizeof(proxy_auth_str), - "%s:%s", - proxy_user, proxy_password); - curl_easy_setopt(c->easy, CURLOPT_PROXYUSERPWD, proxy_auth_str); - } - - code = curl_easy_setopt(c->easy, CURLOPT_URL, c->base.uri.c_str()); - if (code != CURLE_OK) { - error.Format(curl_domain, code, - "curl_easy_setopt() failed: %s", - curl_easy_strerror(code)); - return false; - } - - c->request_headers = nullptr; - c->request_headers = curl_slist_append(c->request_headers, - "Icy-Metadata: 1"); - curl_easy_setopt(c->easy, CURLOPT_HTTPHEADER, c->request_headers); - - return true; -} - -static bool -input_curl_seek(InputStream *is, InputPlugin::offset_type offset, - int whence, - Error &error) -{ - struct input_curl *c = (struct input_curl *)is; - bool ret; - - assert(is->ready); - - if (whence == SEEK_SET && offset == is->offset) - /* no-op */ - return true; - - if (!is->seekable) - return false; - - /* calculate the absolute offset */ - - switch (whence) { - case SEEK_SET: - break; - - case SEEK_CUR: - offset += is->offset; - break; - - case SEEK_END: - if (is->size < 0) - /* stream size is not known */ - return false; - - offset += is->size; - break; - - default: - return false; - } - - if (offset < 0) - return false; - - /* check if we can fast-forward the buffer */ - - while (offset > is->offset && !c->buffers.empty()) { - auto &buffer = c->buffers.front(); - size_t length = buffer.Available(); - if (offset - is->offset < (InputPlugin::offset_type)length) - length = offset - is->offset; - - const bool empty = !buffer.Consume(length); - if (empty) - c->buffers.pop_front(); - - is->offset += length; - } - - if (offset == is->offset) - return true; - - /* close the old connection and open a new one */ - - c->base.mutex.unlock(); - - input_curl_easy_free_indirect(c); - c->buffers.clear(); - - is->offset = offset; - if (is->offset == is->size) { - /* seek to EOF: simulate empty result; avoid - triggering a "416 Requested Range Not Satisfiable" - response */ - return true; - } - - ret = input_curl_easy_init(c, error); - if (!ret) - return false; - - /* send the "Range" header */ - - if (is->offset > 0) { - sprintf(c->range, "%lld-", (long long)is->offset); - curl_easy_setopt(c->easy, CURLOPT_RANGE, c->range); - } - - c->base.ready = false; - - if (!input_curl_easy_add_indirect(c, error)) - return false; - - c->base.mutex.lock(); - - while (!c->base.ready) - c->base.cond.wait(c->base.mutex); - - if (c->postponed_error.IsDefined()) { - error = std::move(c->postponed_error); - c->postponed_error.Clear(); - return false; - } - - return true; -} - -static InputStream * -input_curl_open(const char *url, Mutex &mutex, Cond &cond, - Error &error) -{ - if (memcmp(url, "http://", 7) != 0 && - memcmp(url, "https://", 8) != 0) - return nullptr; - - struct input_curl *c = new input_curl(url, mutex, cond); - - if (!input_curl_easy_init(c, error)) { - delete c; - return nullptr; - } - - if (!input_curl_easy_add_indirect(c, error)) { - delete c; - return nullptr; - } - - return &c->base; -} - -const struct InputPlugin input_plugin_curl = { - "curl", - input_curl_init, - input_curl_finish, - input_curl_open, - input_curl_close, - input_curl_check, - nullptr, - input_curl_tag, - input_curl_available, - input_curl_read, - input_curl_eof, - input_curl_seek, -}; diff --git a/src/input/CurlInputPlugin.hxx b/src/input/CurlInputPlugin.hxx deleted file mode 100644 index 30e917257..000000000 --- a/src/input/CurlInputPlugin.hxx +++ /dev/null @@ -1,25 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#ifndef MPD_INPUT_CURL_HXX -#define MPD_INPUT_CURL_HXX - -extern const struct InputPlugin input_plugin_curl; - -#endif diff --git a/src/input/DespotifyInputPlugin.cxx b/src/input/DespotifyInputPlugin.cxx deleted file mode 100644 index b08299516..000000000 --- a/src/input/DespotifyInputPlugin.cxx +++ /dev/null @@ -1,234 +0,0 @@ -/* - * Copyright (C) 2011-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "DespotifyInputPlugin.hxx" -#include "DespotifyUtils.hxx" -#include "InputStream.hxx" -#include "InputPlugin.hxx" -#include "tag/Tag.hxx" -#include "Log.hxx" - -extern "C" { -#include <despotify.h> -} - -#include <glib.h> - -#include <unistd.h> -#include <string.h> -#include <errno.h> - -#include <stdio.h> - -struct DespotifyInputStream { - InputStream base; - - struct despotify_session *session; - struct ds_track *track; - Tag *tag; - struct ds_pcm_data pcm; - size_t len_available; - bool eof; - - DespotifyInputStream(const char *uri, - Mutex &mutex, Cond &cond, - despotify_session *_session, - ds_track *_track) - :base(input_plugin_despotify, uri, mutex, cond), - session(_session), track(_track), - tag(mpd_despotify_tag_from_track(track)), - len_available(0), eof(false) { - - memset(&pcm, 0, sizeof(pcm)); - - /* Despotify outputs pcm data */ - base.mime = "audio/x-mpd-cdda-pcm"; - base.ready = true; - } - - ~DespotifyInputStream() { - delete tag; - - despotify_free_track(track); - } -}; - -static void -refill_buffer(DespotifyInputStream *ctx) -{ - /* Wait until there is data */ - while (1) { - int rc = despotify_get_pcm(ctx->session, &ctx->pcm); - - if (rc == 0 && ctx->pcm.len) { - ctx->len_available = ctx->pcm.len; - break; - } - if (ctx->eof == true) - break; - - if (rc < 0) { - LogDebug(despotify_domain, "despotify_get_pcm error"); - ctx->eof = true; - break; - } - - /* Wait a while until next iteration */ - usleep(50 * 1000); - } -} - -static void callback(gcc_unused struct despotify_session* ds, - int sig, gcc_unused void* data, void* callback_data) -{ - DespotifyInputStream *ctx = (DespotifyInputStream *)callback_data; - - switch (sig) { - case DESPOTIFY_NEW_TRACK: - break; - - case DESPOTIFY_TIME_TELL: - break; - - case DESPOTIFY_TRACK_PLAY_ERROR: - LogWarning(despotify_domain, "Track play error"); - ctx->eof = true; - ctx->len_available = 0; - break; - - case DESPOTIFY_END_OF_PLAYLIST: - ctx->eof = true; - FormatDebug(despotify_domain, "End of playlist: %d", ctx->eof); - break; - } -} - - -static InputStream * -input_despotify_open(const char *url, - Mutex &mutex, Cond &cond, - gcc_unused Error &error) -{ - struct despotify_session *session; - struct ds_link *ds_link; - struct ds_track *track; - - if (!g_str_has_prefix(url, "spt://")) - return nullptr; - - session = mpd_despotify_get_session(); - if (!session) - return nullptr; - - ds_link = despotify_link_from_uri(url + 6); - if (!ds_link) { - FormatDebug(despotify_domain, "Can't find %s", url); - return nullptr; - } - if (ds_link->type != LINK_TYPE_TRACK) { - despotify_free_link(ds_link); - return nullptr; - } - - track = despotify_link_get_track(session, ds_link); - despotify_free_link(ds_link); - if (!track) - return nullptr; - - DespotifyInputStream *ctx = - new DespotifyInputStream(url, mutex, cond, - session, track); - - if (!mpd_despotify_register_callback(callback, ctx)) { - delete ctx; - return nullptr; - } - - if (despotify_play(ctx->session, ctx->track, false) == false) { - mpd_despotify_unregister_callback(callback); - delete ctx; - return nullptr; - } - - return &ctx->base; -} - -static size_t -input_despotify_read(InputStream *is, void *ptr, size_t size, - gcc_unused Error &error) -{ - DespotifyInputStream *ctx = (DespotifyInputStream *)is; - size_t to_cpy = size; - - if (ctx->len_available == 0) - refill_buffer(ctx); - - if (ctx->len_available < size) - to_cpy = ctx->len_available; - memcpy(ptr, ctx->pcm.buf, to_cpy); - ctx->len_available -= to_cpy; - - is->offset += to_cpy; - - return to_cpy; -} - -static void -input_despotify_close(InputStream *is) -{ - DespotifyInputStream *ctx = (DespotifyInputStream *)is; - - mpd_despotify_unregister_callback(callback); - delete ctx; -} - -static bool -input_despotify_eof(InputStream *is) -{ - DespotifyInputStream *ctx = (DespotifyInputStream *)is; - - return ctx->eof; -} - -static Tag * -input_despotify_tag(InputStream *is) -{ - DespotifyInputStream *ctx = (DespotifyInputStream *)is; - Tag *tag = ctx->tag; - - ctx->tag = nullptr; - - return tag; -} - -const InputPlugin input_plugin_despotify = { - "spt", - nullptr, - nullptr, - input_despotify_open, - input_despotify_close, - nullptr, - nullptr, - input_despotify_tag, - nullptr, - input_despotify_read, - input_despotify_eof, - nullptr, -}; diff --git a/src/input/DespotifyInputPlugin.hxx b/src/input/DespotifyInputPlugin.hxx deleted file mode 100644 index f1911f235..000000000 --- a/src/input/DespotifyInputPlugin.hxx +++ /dev/null @@ -1,25 +0,0 @@ -/* - * Copyright (C) 2011-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#ifndef INPUT_DESPOTIFY_HXX -#define INPUT_DESPOTIFY_HXX - -extern const struct InputPlugin input_plugin_despotify; - -#endif diff --git a/src/input/FfmpegInputPlugin.cxx b/src/input/FfmpegInputPlugin.cxx deleted file mode 100644 index 8f9cd0b86..000000000 --- a/src/input/FfmpegInputPlugin.cxx +++ /dev/null @@ -1,179 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -/* necessary because libavutil/common.h uses UINT64_C */ -#define __STDC_CONSTANT_MACROS - -#include "config.h" -#include "FfmpegInputPlugin.hxx" -#include "InputStream.hxx" -#include "InputPlugin.hxx" -#include "util/Error.hxx" -#include "util/Domain.hxx" - -extern "C" { -#include <libavutil/avutil.h> -#include <libavformat/avio.h> -#include <libavformat/avformat.h> -} - -#include <glib.h> - -struct FfmpegInputStream { - InputStream base; - - AVIOContext *h; - - bool eof; - - FfmpegInputStream(const char *uri, Mutex &mutex, Cond &cond, - AVIOContext *_h) - :base(input_plugin_ffmpeg, uri, mutex, cond), - h(_h), eof(false) { - base.ready = true; - base.seekable = (h->seekable & AVIO_SEEKABLE_NORMAL) != 0; - base.size = avio_size(h); - - /* hack to make MPD select the "ffmpeg" decoder plugin - - since avio.h doesn't tell us the MIME type of the - resource, we can't select a decoder plugin, but the - "ffmpeg" plugin is quite good at auto-detection */ - base.mime = "audio/x-mpd-ffmpeg"; - } - - ~FfmpegInputStream() { - avio_close(h); - } -}; - -static constexpr Domain ffmpeg_domain("ffmpeg"); - -static inline bool -input_ffmpeg_supported(void) -{ - void *opaque = nullptr; - return avio_enum_protocols(&opaque, 0) != nullptr; -} - -static bool -input_ffmpeg_init(gcc_unused const config_param ¶m, - Error &error) -{ - av_register_all(); - - /* disable this plugin if there's no registered protocol */ - if (!input_ffmpeg_supported()) { - error.Set(ffmpeg_domain, "No protocol"); - return false; - } - - return true; -} - -static InputStream * -input_ffmpeg_open(const char *uri, - Mutex &mutex, Cond &cond, - Error &error) -{ - if (!g_str_has_prefix(uri, "gopher://") && - !g_str_has_prefix(uri, "rtp://") && - !g_str_has_prefix(uri, "rtsp://") && - !g_str_has_prefix(uri, "rtmp://") && - !g_str_has_prefix(uri, "rtmpt://") && - !g_str_has_prefix(uri, "rtmps://")) - return nullptr; - - AVIOContext *h; - int ret = avio_open(&h, uri, AVIO_FLAG_READ); - if (ret != 0) { - error.Set(ffmpeg_domain, ret, - "libavformat failed to open the URI"); - return nullptr; - } - - auto *i = new FfmpegInputStream(uri, mutex, cond, h); - return &i->base; -} - -static size_t -input_ffmpeg_read(InputStream *is, void *ptr, size_t size, - Error &error) -{ - FfmpegInputStream *i = (FfmpegInputStream *)is; - - int ret = avio_read(i->h, (unsigned char *)ptr, size); - if (ret <= 0) { - if (ret < 0) - error.Set(ffmpeg_domain, "avio_read() failed"); - - i->eof = true; - return false; - } - - is->offset += ret; - return (size_t)ret; -} - -static void -input_ffmpeg_close(InputStream *is) -{ - FfmpegInputStream *i = (FfmpegInputStream *)is; - - delete i; -} - -static bool -input_ffmpeg_eof(InputStream *is) -{ - FfmpegInputStream *i = (FfmpegInputStream *)is; - - return i->eof; -} - -static bool -input_ffmpeg_seek(InputStream *is, InputPlugin::offset_type offset, - int whence, - Error &error) -{ - FfmpegInputStream *i = (FfmpegInputStream *)is; - int64_t ret = avio_seek(i->h, offset, whence); - - if (ret >= 0) { - i->eof = false; - return true; - } else { - error.Set(ffmpeg_domain, "avio_seek() failed"); - return false; - } -} - -const InputPlugin input_plugin_ffmpeg = { - "ffmpeg", - input_ffmpeg_init, - nullptr, - input_ffmpeg_open, - input_ffmpeg_close, - nullptr, - nullptr, - nullptr, - nullptr, - input_ffmpeg_read, - input_ffmpeg_eof, - input_ffmpeg_seek, -}; diff --git a/src/input/FfmpegInputPlugin.hxx b/src/input/FfmpegInputPlugin.hxx deleted file mode 100644 index 9bc2eeaea..000000000 --- a/src/input/FfmpegInputPlugin.hxx +++ /dev/null @@ -1,28 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#ifndef MPD_FFMPEG_INPUT_PLUGIN_HXX -#define MPD_FFMPEG_INPUT_PLUGIN_HXX - -/** - * An input plugin based on libavformat's "avio" library. - */ -extern const struct InputPlugin input_plugin_ffmpeg; - -#endif diff --git a/src/input/FileInputPlugin.cxx b/src/input/FileInputPlugin.cxx deleted file mode 100644 index 26e40d609..000000000 --- a/src/input/FileInputPlugin.cxx +++ /dev/null @@ -1,159 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" /* must be first for large file support */ -#include "FileInputPlugin.hxx" -#include "InputStream.hxx" -#include "InputPlugin.hxx" -#include "util/Error.hxx" -#include "util/Domain.hxx" -#include "fs/Traits.hxx" -#include "system/fd_util.h" -#include "open.h" - -#include <sys/stat.h> -#include <unistd.h> -#include <errno.h> -#include <string.h> -#include <glib.h> - -static constexpr Domain file_domain("file"); - -struct FileInputStream { - InputStream base; - - int fd; - - FileInputStream(const char *path, int _fd, off_t size, - Mutex &mutex, Cond &cond) - :base(input_plugin_file, path, mutex, cond), - fd(_fd) { - base.size = size; - base.seekable = true; - base.ready = true; - } - - ~FileInputStream() { - close(fd); - } -}; - -static InputStream * -input_file_open(const char *filename, - Mutex &mutex, Cond &cond, - Error &error) -{ - int fd, ret; - struct stat st; - - if (!PathTraits::IsAbsoluteFS(filename)) - return nullptr; - - fd = open_cloexec(filename, O_RDONLY|O_BINARY, 0); - if (fd < 0) { - if (errno != ENOENT && errno != ENOTDIR) - error.FormatErrno("Failed to open \"%s\"", - filename); - return nullptr; - } - - ret = fstat(fd, &st); - if (ret < 0) { - error.FormatErrno("Failed to stat \"%s\"", filename); - close(fd); - return nullptr; - } - - if (!S_ISREG(st.st_mode)) { - error.Format(file_domain, "Not a regular file: %s", filename); - close(fd); - return nullptr; - } - -#ifdef POSIX_FADV_SEQUENTIAL - posix_fadvise(fd, (off_t)0, st.st_size, POSIX_FADV_SEQUENTIAL); -#endif - - FileInputStream *fis = new FileInputStream(filename, fd, st.st_size, - mutex, cond); - return &fis->base; -} - -static bool -input_file_seek(InputStream *is, InputPlugin::offset_type offset, - int whence, - Error &error) -{ - FileInputStream *fis = (FileInputStream *)is; - - offset = (InputPlugin::offset_type)lseek(fis->fd, (off_t)offset, whence); - if (offset < 0) { - error.SetErrno("Failed to seek"); - return false; - } - - is->offset = offset; - return true; -} - -static size_t -input_file_read(InputStream *is, void *ptr, size_t size, - Error &error) -{ - FileInputStream *fis = (FileInputStream *)is; - ssize_t nbytes; - - nbytes = read(fis->fd, ptr, size); - if (nbytes < 0) { - error.SetErrno("Failed to read"); - return 0; - } - - is->offset += nbytes; - return (size_t)nbytes; -} - -static void -input_file_close(InputStream *is) -{ - FileInputStream *fis = (FileInputStream *)is; - - delete fis; -} - -static bool -input_file_eof(InputStream *is) -{ - return is->offset >= is->size; -} - -const InputPlugin input_plugin_file = { - "file", - nullptr, - nullptr, - input_file_open, - input_file_close, - nullptr, - nullptr, - nullptr, - nullptr, - input_file_read, - input_file_eof, - input_file_seek, -}; diff --git a/src/input/FileInputPlugin.hxx b/src/input/FileInputPlugin.hxx deleted file mode 100644 index f76f4dd0e..000000000 --- a/src/input/FileInputPlugin.hxx +++ /dev/null @@ -1,25 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#ifndef MPD_INPUT_FILE_HXX -#define MPD_INPUT_FILE_HXX - -extern const struct InputPlugin input_plugin_file; - -#endif diff --git a/src/input/Init.cxx b/src/input/Init.cxx new file mode 100644 index 000000000..5e64dcaed --- /dev/null +++ b/src/input/Init.cxx @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "Init.hxx" +#include "Registry.hxx" +#include "InputPlugin.hxx" +#include "util/Error.hxx" +#include "config/ConfigGlobal.hxx" +#include "config/ConfigOption.hxx" +#include "config/ConfigData.hxx" +#include "Log.hxx" + +#include <assert.h> +#include <string.h> + +bool +input_stream_global_init(Error &error) +{ + const config_param empty; + + for (unsigned i = 0; input_plugins[i] != nullptr; ++i) { + const InputPlugin *plugin = input_plugins[i]; + + assert(plugin->name != nullptr); + assert(*plugin->name != 0); + assert(plugin->open != nullptr); + + const struct config_param *param = + config_find_block(CONF_INPUT, "plugin", plugin->name); + if (param == nullptr) { + param = ∅ + } else if (!param->GetBlockValue("enabled", true)) + /* the plugin is disabled in mpd.conf */ + continue; + + InputPlugin::InitResult result = plugin->init != nullptr + ? plugin->init(*param, error) + : InputPlugin::InitResult::SUCCESS; + + switch (result) { + case InputPlugin::InitResult::SUCCESS: + input_plugins_enabled[i] = true; + break; + + case InputPlugin::InitResult::ERROR: + error.FormatPrefix("Failed to initialize input plugin '%s': ", + plugin->name); + return false; + + case InputPlugin::InitResult::UNAVAILABLE: + if (error.IsDefined()) { + FormatError(error, + "Input plugin '%s' is unavailable: ", + plugin->name); + error.Clear(); + } + + break; + } + } + + return true; +} + +void input_stream_global_finish(void) +{ + input_plugins_for_each_enabled(plugin) + if (plugin->finish != nullptr) + plugin->finish(); +} diff --git a/src/input/Init.hxx b/src/input/Init.hxx new file mode 100644 index 000000000..875fdce7c --- /dev/null +++ b/src/input/Init.hxx @@ -0,0 +1,36 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_INPUT_INIT_HXX +#define MPD_INPUT_INIT_HXX + +class Error; + +/** + * Initializes this library and all input_stream implementations. + */ +bool +input_stream_global_init(Error &error); + +/** + * Deinitializes this library and all input_stream implementations. + */ +void input_stream_global_finish(void); + +#endif diff --git a/src/input/InputPlugin.hxx b/src/input/InputPlugin.hxx new file mode 100644 index 000000000..090c73df8 --- /dev/null +++ b/src/input/InputPlugin.hxx @@ -0,0 +1,120 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_INPUT_PLUGIN_HXX +#define MPD_INPUT_PLUGIN_HXX + +#include "thread/Mutex.hxx" +#include "thread/Cond.hxx" + +#include <stddef.h> +#include <stdint.h> + +#ifdef WIN32 +#include <windows.h> +/* damn you, windows.h! */ +#ifdef ERROR +#undef ERROR +#endif +#endif + +struct config_param; +struct InputStream; +class Error; +struct Tag; + +struct InputPlugin { + enum class InitResult { + /** + * A fatal error has occurred (e.g. misconfiguration). + * The #Error has been set. + */ + ERROR, + + /** + * The plugin was initialized successfully and is + * ready to be used. + */ + SUCCESS, + + /** + * The plugin is not available and shall be disabled. + * The #Error may be set describing the situation (to + * be logged). + */ + UNAVAILABLE, + }; + + typedef int64_t offset_type; + + const char *name; + + /** + * Global initialization. This method is called when MPD starts. + * + * @return true on success, false if the plugin should be + * disabled + */ + InitResult (*init)(const config_param ¶m, Error &error); + + /** + * Global deinitialization. Called once before MPD shuts + * down (only if init() has returned true). + */ + void (*finish)(void); + + InputStream *(*open)(const char *uri, + Mutex &mutex, Cond &cond, + Error &error); + void (*close)(InputStream *is); + + /** + * Check for errors that may have occurred in the I/O thread. + * May be unimplemented for synchronous plugins. + * + * @return false on error + */ + bool (*check)(InputStream *is, Error &error); + + /** + * Update the public attributes. Call before access. Can be + * nullptr if the plugin always keeps its attributes up to date. + */ + void (*update)(InputStream *is); + + Tag *(*tag)(InputStream *is); + + /** + * Returns true if the next read operation will not block: + * either data is available, or end-of-stream has been + * reached, or an error has occurred. + * + * If this method is unimplemented, then it is assumed that + * reading will never block. + */ + bool (*available)(InputStream *is); + + size_t (*read)(InputStream *is, void *ptr, size_t size, + Error &error); + bool (*eof)(InputStream *is); + bool (*seek)(InputStream *is, offset_type offset, int whence, + Error &error); +}; + +#endif diff --git a/src/input/InputStream.cxx b/src/input/InputStream.cxx new file mode 100644 index 000000000..0621437c4 --- /dev/null +++ b/src/input/InputStream.cxx @@ -0,0 +1,214 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "InputStream.hxx" +#include "Registry.hxx" +#include "InputPlugin.hxx" +#include "plugins/RewindInputPlugin.hxx" +#include "util/UriUtil.hxx" +#include "util/Error.hxx" +#include "util/Domain.hxx" + +#include <assert.h> +#include <stdio.h> /* for SEEK_SET */ + +static constexpr Domain input_domain("input"); + +InputStream * +InputStream::Open(const char *url, + Mutex &mutex, Cond &cond, + Error &error) +{ + input_plugins_for_each_enabled(plugin) { + InputStream *is; + + is = plugin->open(url, mutex, cond, error); + if (is != nullptr) { + assert(is->plugin.close != nullptr); + assert(is->plugin.read != nullptr); + assert(is->plugin.eof != nullptr); + assert(!is->seekable || is->plugin.seek != nullptr); + + is = input_rewind_open(is); + + return is; + } else if (error.IsDefined()) + return nullptr; + } + + error.Set(input_domain, "Unrecognized URI"); + return nullptr; +} + +InputStream * +InputStream::OpenReady(const char *uri, + Mutex &mutex, Cond &cond, + Error &error) +{ + InputStream *is = Open(uri, mutex, cond, error); + if (is == nullptr) + return nullptr; + + mutex.lock(); + is->WaitReady(); + bool success = is->Check(error); + mutex.unlock(); + + if (!success) { + is->Close(); + is = nullptr; + } + + return is; +} + +bool +InputStream::Check(Error &error) +{ + return plugin.check == nullptr || plugin.check(this, error); +} + +void +InputStream::Update() +{ + if (plugin.update != nullptr) + plugin.update(this); +} + +void +InputStream::WaitReady() +{ + while (true) { + Update(); + if (ready) + break; + + cond.wait(mutex); + } +} + +void +InputStream::LockWaitReady() +{ + const ScopeLock protect(mutex); + WaitReady(); +} + +bool +InputStream::CheapSeeking() const +{ + return IsSeekable() && !uri_has_scheme(uri.c_str()); +} + +bool +InputStream::Seek(offset_type _offset, int whence, Error &error) +{ + if (plugin.seek == nullptr) + return false; + + return plugin.seek(this, _offset, whence, error); +} + +bool +InputStream::LockSeek(offset_type _offset, int whence, Error &error) +{ + if (plugin.seek == nullptr) + return false; + + const ScopeLock protect(mutex); + return Seek(_offset, whence, error); +} + +bool +InputStream::Rewind(Error &error) +{ + return Seek(0, SEEK_SET, error); +} + +bool +InputStream::LockRewind(Error &error) +{ + return LockSeek(0, SEEK_SET, error); +} + +Tag * +InputStream::ReadTag() +{ + return plugin.tag != nullptr + ? plugin.tag(this) + : nullptr; +} + +Tag * +InputStream::LockReadTag() +{ + if (plugin.tag == nullptr) + return nullptr; + + const ScopeLock protect(mutex); + return ReadTag(); +} + +bool +InputStream::IsAvailable() +{ + return plugin.available != nullptr + ? plugin.available(this) + : true; +} + +size_t +InputStream::Read(void *ptr, size_t _size, Error &error) +{ + assert(ptr != nullptr); + assert(_size > 0); + + return plugin.read(this, ptr, _size, error); +} + +size_t +InputStream::LockRead(void *ptr, size_t _size, Error &error) +{ + assert(ptr != nullptr); + assert(_size > 0); + + const ScopeLock protect(mutex); + return Read(ptr, _size, error); +} + +void +InputStream::Close() +{ + plugin.close(this); +} + +bool +InputStream::IsEOF() +{ + return plugin.eof(this); +} + +bool +InputStream::LockIsEOF() +{ + const ScopeLock protect(mutex); + return IsEOF(); +} + diff --git a/src/input/InputStream.hxx b/src/input/InputStream.hxx new file mode 100644 index 000000000..c66091687 --- /dev/null +++ b/src/input/InputStream.hxx @@ -0,0 +1,301 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_INPUT_STREAM_HXX +#define MPD_INPUT_STREAM_HXX + +#include "check.h" +#include "thread/Mutex.hxx" +#include "Compiler.h" + +#include <string> + +#include <assert.h> +#include <stdint.h> + +class Cond; +class Error; +struct Tag; +struct InputPlugin; + +struct InputStream { + typedef int64_t offset_type; + + /** + * the plugin which implements this input stream + */ + const InputPlugin &plugin; + + /** + * The absolute URI which was used to open this stream. + */ + std::string uri; + + /** + * A mutex that protects the mutable attributes of this object + * and its implementation. It must be locked before calling + * any of the public methods. + * + * This object is allocated by the client, and the client is + * responsible for freeing it. + */ + Mutex &mutex; + + /** + * A cond that gets signalled when the state of this object + * changes from the I/O thread. The client of this object may + * wait on it. Optional, may be nullptr. + * + * This object is allocated by the client, and the client is + * responsible for freeing it. + */ + Cond &cond; + + /** + * indicates whether the stream is ready for reading and + * whether the other attributes in this struct are valid + */ + bool ready; + + /** + * if true, then the stream is fully seekable + */ + bool seekable; + + /** + * the size of the resource, or -1 if unknown + */ + offset_type size; + + /** + * the current offset within the stream + */ + offset_type offset; + + /** + * the MIME content type of the resource, or empty if unknown. + */ + std::string mime; + + InputStream(const InputPlugin &_plugin, + const char *_uri, Mutex &_mutex, Cond &_cond) + :plugin(_plugin), uri(_uri), + mutex(_mutex), cond(_cond), + ready(false), seekable(false), + size(-1), offset(0) { + assert(_uri != nullptr); + } + + /** + * Opens a new input stream. You may not access it until the "ready" + * flag is set. + * + * @param mutex a mutex that is used to protect this object; must be + * locked before calling any of the public methods + * @param cond a cond that gets signalled when the state of + * this object changes; may be nullptr if the caller doesn't want to get + * notifications + * @return an #InputStream object on success, nullptr on error + */ + gcc_nonnull_all + gcc_malloc + static InputStream *Open(const char *uri, Mutex &mutex, Cond &cond, + Error &error); + + /** + * Just like Open(), but waits for the stream to become ready. + * It is a wrapper for Open(), WaitReady() and Check(). + */ + gcc_malloc gcc_nonnull_all + static InputStream *OpenReady(const char *uri, + Mutex &mutex, Cond &cond, + Error &error); + + /** + * Close the input stream and free resources. + * + * The caller must not lock the mutex. + */ + void Close(); + + void Lock() { + mutex.lock(); + } + + void Unlock() { + mutex.unlock(); + } + + /** + * Check for errors that may have occurred in the I/O thread. + * + * @return false on error + */ + bool Check(Error &error); + + /** + * Update the public attributes. Call before accessing attributes + * such as "ready" or "offset". + */ + void Update(); + + /** + * Wait until the stream becomes ready. + * + * The caller must lock the mutex. + */ + void WaitReady(); + + /** + * Wrapper for WaitReady() which locks and unlocks the mutex; + * the caller must not be holding it already. + */ + void LockWaitReady(); + + gcc_pure + const char *GetMimeType() const { + assert(ready); + + return mime.empty() ? nullptr : mime.c_str(); + } + + gcc_nonnull_all + void OverrideMimeType(const char *_mime) { + assert(ready); + + mime = _mime; + } + + gcc_pure + offset_type GetSize() const { + assert(ready); + + return size; + } + + gcc_pure + offset_type GetOffset() const { + assert(ready); + + return offset; + } + + gcc_pure + bool IsSeekable() const { + assert(ready); + + return seekable; + } + + /** + * Determines whether seeking is cheap. This is true for local files. + */ + gcc_pure + bool CheapSeeking() const; + + /** + * Seeks to the specified position in the stream. This will most + * likely fail if the "seekable" flag is false. + * + * The caller must lock the mutex. + * + * @param offset the relative offset + * @param whence the base of the seek, one of SEEK_SET, SEEK_CUR, SEEK_END + */ + bool Seek(offset_type offset, int whence, Error &error); + + /** + * Wrapper for Seek() which locks and unlocks the mutex; the + * caller must not be holding it already. + */ + bool LockSeek(offset_type offset, int whence, Error &error); + + /** + * Rewind to the beginning of the stream. This is a wrapper + * for Seek(0, SEEK_SET, error). + */ + bool Rewind(Error &error); + bool LockRewind(Error &error); + + /** + * Returns true if the stream has reached end-of-file. + * + * The caller must lock the mutex. + */ + gcc_pure + bool IsEOF(); + + /** + * Wrapper for IsEOF() which locks and unlocks the mutex; the + * caller must not be holding it already. + */ + gcc_pure + bool LockIsEOF(); + + /** + * Reads the tag from the stream. + * + * The caller must lock the mutex. + * + * @return a tag object which must be freed by the caller, or + * nullptr if the tag has not changed since the last call + */ + gcc_malloc + Tag *ReadTag(); + + /** + * Wrapper for ReadTag() which locks and unlocks the mutex; + * the caller must not be holding it already. + */ + gcc_malloc + Tag *LockReadTag(); + + /** + * Returns true if the next read operation will not block: either data + * is available, or end-of-stream has been reached, or an error has + * occurred. + * + * The caller must lock the mutex. + */ + gcc_pure + bool IsAvailable(); + + /** + * Reads data from the stream into the caller-supplied buffer. + * Returns 0 on error or eof (check with IsEOF()). + * + * The caller must lock the mutex. + * + * @param is the InputStream object + * @param ptr the buffer to read into + * @param size the maximum number of bytes to read + * @return the number of bytes read + */ + gcc_nonnull_all + size_t Read(void *ptr, size_t size, Error &error); + + /** + * Wrapper for Read() which locks and unlocks the mutex; + * the caller must not be holding it already. + */ + gcc_nonnull_all + size_t LockRead(void *ptr, size_t size, Error &error); +}; + +#endif diff --git a/src/input/MmsInputPlugin.cxx b/src/input/MmsInputPlugin.cxx deleted file mode 100644 index e97c1eb3f..000000000 --- a/src/input/MmsInputPlugin.cxx +++ /dev/null @@ -1,130 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "MmsInputPlugin.hxx" -#include "InputStream.hxx" -#include "InputPlugin.hxx" -#include "util/Error.hxx" -#include "util/Domain.hxx" - -#include <glib.h> -#include <libmms/mmsx.h> - -#include <string.h> -#include <errno.h> - -struct MmsInputStream { - InputStream base; - - mmsx_t *mms; - - bool eof; - - MmsInputStream(const char *uri, - Mutex &mutex, Cond &cond, - mmsx_t *_mms) - :base(input_plugin_mms, uri, mutex, cond), - mms(_mms), eof(false) { - /* XX is this correct? at least this selects the ffmpeg - decoder, which seems to work fine*/ - base.mime = "audio/x-ms-wma"; - - base.ready = true; - } - - ~MmsInputStream() { - mmsx_close(mms); - } -}; - -static constexpr Domain mms_domain("mms"); - -static InputStream * -input_mms_open(const char *url, - Mutex &mutex, Cond &cond, - Error &error) -{ - if (!g_str_has_prefix(url, "mms://") && - !g_str_has_prefix(url, "mmsh://") && - !g_str_has_prefix(url, "mmst://") && - !g_str_has_prefix(url, "mmsu://")) - return nullptr; - - const auto mms = mmsx_connect(nullptr, nullptr, url, 128 * 1024); - if (mms == nullptr) { - error.Set(mms_domain, "mmsx_connect() failed"); - return nullptr; - } - - auto m = new MmsInputStream(url, mutex, cond, mms); - return &m->base; -} - -static size_t -input_mms_read(InputStream *is, void *ptr, size_t size, - Error &error) -{ - MmsInputStream *m = (MmsInputStream *)is; - int ret; - - ret = mmsx_read(nullptr, m->mms, (char *)ptr, size); - if (ret <= 0) { - if (ret < 0) - error.SetErrno("mmsx_read() failed"); - - m->eof = true; - return false; - } - - is->offset += ret; - - return (size_t)ret; -} - -static void -input_mms_close(InputStream *is) -{ - MmsInputStream *m = (MmsInputStream *)is; - - delete m; -} - -static bool -input_mms_eof(InputStream *is) -{ - MmsInputStream *m = (MmsInputStream *)is; - - return m->eof; -} - -const InputPlugin input_plugin_mms = { - "mms", - nullptr, - nullptr, - input_mms_open, - input_mms_close, - nullptr, - nullptr, - nullptr, - nullptr, - input_mms_read, - input_mms_eof, - nullptr, -}; diff --git a/src/input/MmsInputPlugin.hxx b/src/input/MmsInputPlugin.hxx deleted file mode 100644 index e3d3ba3c8..000000000 --- a/src/input/MmsInputPlugin.hxx +++ /dev/null @@ -1,25 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#ifndef INPUT_MMS_H -#define INPUT_MMS_H - -extern const struct InputPlugin input_plugin_mms; - -#endif diff --git a/src/input/Registry.cxx b/src/input/Registry.cxx new file mode 100644 index 000000000..2b981df1c --- /dev/null +++ b/src/input/Registry.cxx @@ -0,0 +1,93 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "Registry.hxx" +#include "util/Macros.hxx" +#include "plugins/FileInputPlugin.hxx" + +#ifdef HAVE_ALSA +#include "plugins/AlsaInputPlugin.hxx" +#endif + +#ifdef ENABLE_ARCHIVE +#include "plugins/ArchiveInputPlugin.hxx" +#endif + +#ifdef ENABLE_CURL +#include "plugins/CurlInputPlugin.hxx" +#endif + +#ifdef HAVE_FFMPEG +#include "plugins/FfmpegInputPlugin.hxx" +#endif + +#ifdef ENABLE_SMBCLIENT +#include "plugins/SmbclientInputPlugin.hxx" +#endif + +#ifdef ENABLE_NFS +#include "plugins/NfsInputPlugin.hxx" +#endif + +#ifdef ENABLE_MMS +#include "plugins/MmsInputPlugin.hxx" +#endif + +#ifdef ENABLE_CDIO_PARANOIA +#include "plugins/CdioParanoiaInputPlugin.hxx" +#endif + +#ifdef ENABLE_DESPOTIFY +#include "plugins/DespotifyInputPlugin.hxx" +#endif + +const InputPlugin *const input_plugins[] = { + &input_plugin_file, +#ifdef HAVE_ALSA + &input_plugin_alsa, +#endif +#ifdef ENABLE_ARCHIVE + &input_plugin_archive, +#endif +#ifdef ENABLE_CURL + &input_plugin_curl, +#endif +#ifdef HAVE_FFMPEG + &input_plugin_ffmpeg, +#endif +#ifdef ENABLE_SMBCLIENT + &input_plugin_smbclient, +#endif +#ifdef ENABLE_NFS + &input_plugin_nfs, +#endif +#ifdef ENABLE_MMS + &input_plugin_mms, +#endif +#ifdef ENABLE_CDIO_PARANOIA + &input_plugin_cdio_paranoia, +#endif +#ifdef ENABLE_DESPOTIFY + &input_plugin_despotify, +#endif + nullptr +}; + +bool input_plugins_enabled[ARRAY_SIZE(input_plugins) - 1]; diff --git a/src/input/Registry.hxx b/src/input/Registry.hxx new file mode 100644 index 000000000..1b81f8f06 --- /dev/null +++ b/src/input/Registry.hxx @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_INPUT_REGISTRY_HXX +#define MPD_INPUT_REGISTRY_HXX + +#include "check.h" + +/** + * NULL terminated list of all input plugins which were enabled at + * compile time. + */ +extern const struct InputPlugin *const input_plugins[]; + +extern bool input_plugins_enabled[]; + +#define input_plugins_for_each(plugin) \ + for (const InputPlugin *plugin, \ + *const*input_plugin_iterator = &input_plugins[0]; \ + (plugin = *input_plugin_iterator) != NULL; \ + ++input_plugin_iterator) + +#define input_plugins_for_each_enabled(plugin) \ + input_plugins_for_each(plugin) \ + if (input_plugins_enabled[input_plugin_iterator - input_plugins]) + +#endif diff --git a/src/input/RewindInputPlugin.cxx b/src/input/RewindInputPlugin.cxx deleted file mode 100644 index e11f56631..000000000 --- a/src/input/RewindInputPlugin.cxx +++ /dev/null @@ -1,252 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "RewindInputPlugin.hxx" -#include "InputStream.hxx" -#include "InputPlugin.hxx" -#include "tag/Tag.hxx" - -#include <assert.h> -#include <string.h> -#include <stdio.h> - -extern const InputPlugin rewind_input_plugin; - -struct RewindInputStream { - InputStream base; - - InputStream *input; - - /** - * The read position within the buffer. Undefined as long as - * ReadingFromBuffer() returns false. - */ - size_t head; - - /** - * The write/append position within the buffer. - */ - size_t tail; - - /** - * The size of this buffer is the maximum number of bytes - * which can be rewinded cheaply without passing the "seek" - * call to CURL. - * - * The origin of this buffer is always the beginning of the - * stream (offset 0). - */ - char buffer[64 * 1024]; - - RewindInputStream(InputStream *_input) - :base(rewind_input_plugin, _input->uri.c_str(), - _input->mutex, _input->cond), - input(_input), tail(0) { - } - - ~RewindInputStream() { - input->Close(); - } - - /** - * Are we currently reading from the buffer, and does the - * buffer contain more data for the next read operation? - */ - bool ReadingFromBuffer() const { - return tail > 0 && base.offset < input->offset; - } - - /** - * Copy public attributes from the underlying input stream to the - * "rewind" input stream. This function is called when a method of - * the underlying stream has returned, which may have modified these - * attributes. - */ - void CopyAttributes() { - InputStream *dest = &base; - const InputStream *src = input; - - assert(dest != src); - - bool dest_ready = dest->ready; - - dest->ready = src->ready; - dest->seekable = src->seekable; - dest->size = src->size; - dest->offset = src->offset; - - if (!dest_ready && src->ready) - dest->mime = src->mime; - } -}; - -static void -input_rewind_close(InputStream *is) -{ - RewindInputStream *r = (RewindInputStream *)is; - - delete r; -} - -static bool -input_rewind_check(InputStream *is, Error &error) -{ - RewindInputStream *r = (RewindInputStream *)is; - - return r->input->Check(error); -} - -static void -input_rewind_update(InputStream *is) -{ - RewindInputStream *r = (RewindInputStream *)is; - - if (!r->ReadingFromBuffer()) - r->CopyAttributes(); -} - -static Tag * -input_rewind_tag(InputStream *is) -{ - RewindInputStream *r = (RewindInputStream *)is; - - return r->input->ReadTag(); -} - -static bool -input_rewind_available(InputStream *is) -{ - RewindInputStream *r = (RewindInputStream *)is; - - return r->input->IsAvailable(); -} - -static size_t -input_rewind_read(InputStream *is, void *ptr, size_t size, - Error &error) -{ - RewindInputStream *r = (RewindInputStream *)is; - - if (r->ReadingFromBuffer()) { - /* buffered read */ - - assert(r->head == (size_t)is->offset); - assert(r->tail == (size_t)r->input->offset); - - if (size > r->tail - r->head) - size = r->tail - r->head; - - memcpy(ptr, r->buffer + r->head, size); - r->head += size; - is->offset += size; - - return size; - } else { - /* pass method call to underlying stream */ - - size_t nbytes = r->input->Read(ptr, size, error); - - if (r->input->offset > (InputPlugin::offset_type)sizeof(r->buffer)) - /* disable buffering */ - r->tail = 0; - else if (r->tail == (size_t)is->offset) { - /* append to buffer */ - - memcpy(r->buffer + r->tail, ptr, nbytes); - r->tail += nbytes; - - assert(r->tail == (size_t)r->input->offset); - } - - r->CopyAttributes(); - - return nbytes; - } -} - -static bool -input_rewind_eof(InputStream *is) -{ - RewindInputStream *r = (RewindInputStream *)is; - - return !r->ReadingFromBuffer() && r->input->IsEOF(); -} - -static bool -input_rewind_seek(InputStream *is, InputPlugin::offset_type offset, - int whence, - Error &error) -{ - RewindInputStream *r = (RewindInputStream *)is; - - assert(is->ready); - - if (whence == SEEK_SET && r->tail > 0 && - offset <= (InputPlugin::offset_type)r->tail) { - /* buffered seek */ - - assert(!r->ReadingFromBuffer() || - r->head == (size_t)is->offset); - assert(r->tail == (size_t)r->input->offset); - - r->head = (size_t)offset; - is->offset = offset; - - return true; - } else { - bool success = r->input->Seek(offset, whence, error); - r->CopyAttributes(); - - /* disable the buffer, because r->input has left the - buffered range now */ - r->tail = 0; - - return success; - } -} - -const InputPlugin rewind_input_plugin = { - nullptr, - nullptr, - nullptr, - nullptr, - input_rewind_close, - input_rewind_check, - input_rewind_update, - input_rewind_tag, - input_rewind_available, - input_rewind_read, - input_rewind_eof, - input_rewind_seek, -}; - -InputStream * -input_rewind_open(InputStream *is) -{ - assert(is != nullptr); - assert(is->offset == 0); - - if (is->seekable) - /* seekable resources don't need this plugin */ - return is; - - RewindInputStream *c = new RewindInputStream(is); - return &c->base; -} diff --git a/src/input/RewindInputPlugin.hxx b/src/input/RewindInputPlugin.hxx deleted file mode 100644 index 2d461970a..000000000 --- a/src/input/RewindInputPlugin.hxx +++ /dev/null @@ -1,37 +0,0 @@ -/* - * Copyright (C) 2003-2013 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -/** \file - * - * A wrapper for an input_stream object which allows cheap buffered - * rewinding. This is useful while detecting the stream codec (let - * each decoder plugin peek a portion from the stream). - */ - -#ifndef MPD_INPUT_REWIND_HXX -#define MPD_INPUT_REWIND_HXX - -#include "check.h" - -struct InputStream; - -InputStream * -input_rewind_open(InputStream *is); - -#endif diff --git a/src/input/TextInputStream.cxx b/src/input/TextInputStream.cxx new file mode 100644 index 000000000..d7cb440b3 --- /dev/null +++ b/src/input/TextInputStream.cxx @@ -0,0 +1,78 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "TextInputStream.hxx" +#include "InputStream.hxx" +#include "util/CharUtil.hxx" +#include "util/Error.hxx" +#include "Log.hxx" + +#include <assert.h> +#include <string.h> + +bool TextInputStream::ReadLine(std::string &line) +{ + const char *src, *p; + + do { + size_t nbytes; + auto dest = buffer.Write(); + if (dest.size >= 2) { + /* reserve one byte for the null terminator if + the last line is not terminated by a + newline character */ + --dest.size; + + Error error; + nbytes = is.LockRead(dest.data, dest.size, error); + if (nbytes > 0) + buffer.Append(nbytes); + else if (error.IsDefined()) { + LogError(error); + return false; + } + } else + nbytes = 0; + + auto src_p = buffer.Read(); + if (src_p.IsEmpty()) + return false; + + src = src_p.data; + + p = reinterpret_cast<const char*>(memchr(src, '\n', src_p.size)); + if (p == nullptr && nbytes == 0) { + /* end of file (or line too long): terminate + the current line */ + dest = buffer.Write(); + assert(!dest.IsEmpty()); + dest[0] = '\n'; + buffer.Append(1); + } + } while (p == nullptr); + + size_t length = p - src + 1; + while (p > src && IsWhitespaceOrNull(p[-1])) + --p; + + line = std::string(src, p - src); + buffer.Consume(length); + return true; +} diff --git a/src/input/TextInputStream.hxx b/src/input/TextInputStream.hxx new file mode 100644 index 000000000..86ae16e41 --- /dev/null +++ b/src/input/TextInputStream.hxx @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_TEXT_INPUT_STREAM_HXX +#define MPD_TEXT_INPUT_STREAM_HXX + +#include "util/FifoBuffer.hxx" + +#include <string> + +struct InputStream; + +class TextInputStream { + InputStream &is; + FifoBuffer<char, 4096> buffer; + +public: + /** + * Wraps an existing #input_stream object into a #TextInputStream, + * to read its contents as text lines. + * + * @param _is an open #input_stream object + */ + explicit TextInputStream(InputStream &_is) + :is(_is) {} + + TextInputStream(const TextInputStream &) = delete; + TextInputStream& operator=(const TextInputStream &) = delete; + + /** + * Reads the next line from the stream with newline character stripped. + * + * @param line a string to put result to + * @return true if line is read successfully, false on end of file + * or error + */ + bool ReadLine(std::string &line); +}; + +#endif diff --git a/src/input/ThreadInputStream.cxx b/src/input/ThreadInputStream.cxx new file mode 100644 index 000000000..5271171ef --- /dev/null +++ b/src/input/ThreadInputStream.cxx @@ -0,0 +1,204 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "ThreadInputStream.hxx" +#include "InputPlugin.hxx" +#include "thread/Name.hxx" +#include "util/CircularBuffer.hxx" +#include "util/HugeAllocator.hxx" + +#include <assert.h> +#include <string.h> + +ThreadInputStream::~ThreadInputStream() +{ + if (buffer != nullptr) { + buffer->Clear(); + HugeFree(buffer->Write().data, buffer_size); + delete buffer; + } +} + +InputStream * +ThreadInputStream::Start(Error &error) +{ + assert(buffer == nullptr); + + void *p = HugeAllocate(buffer_size); + if (p == nullptr) { + error.SetErrno(); + return nullptr; + } + + buffer = new CircularBuffer<uint8_t>((uint8_t *)p, buffer_size); + + if (!thread.Start(ThreadFunc, this, error)) + return nullptr; + + return &base; +} + +inline void +ThreadInputStream::ThreadFunc() +{ + FormatThreadName("input:%s", base.plugin.name); + + base.mutex.lock(); + if (!Open(postponed_error)) { + base.cond.broadcast(); + base.mutex.unlock(); + return; + } + + /* we're ready, tell it to our client */ + base.ready = true; + base.cond.broadcast(); + + while (!close) { + assert(!postponed_error.IsDefined()); + + auto w = buffer->Write(); + if (w.IsEmpty()) { + wake_cond.wait(base.mutex); + } else { + base.mutex.unlock(); + + Error error; + size_t nbytes = Read(w.data, w.size, error); + + base.mutex.lock(); + base.cond.broadcast(); + + if (nbytes == 0) { + eof = true; + postponed_error = std::move(error); + break; + } + + buffer->Append(nbytes); + } + } + + base.mutex.unlock(); + + Close(); +} + +void +ThreadInputStream::ThreadFunc(void *ctx) +{ + ThreadInputStream &tis = *(ThreadInputStream *)ctx; + tis.ThreadFunc(); +} + +inline bool +ThreadInputStream::Check2(Error &error) +{ + if (postponed_error.IsDefined()) { + error = std::move(postponed_error); + return false; + } + + return true; +} + +bool +ThreadInputStream::Check(InputStream *is, Error &error) +{ + return Cast(is)->Check2(error); +} + +inline bool +ThreadInputStream::Available2() +{ + return !buffer->IsEmpty() || eof || postponed_error.IsDefined(); +} + +bool +ThreadInputStream::Available(InputStream *is) +{ + return Cast(is)->Available2(); +} + +inline size_t +ThreadInputStream::Read2(void *ptr, size_t size, Error &error) +{ + while (true) { + if (postponed_error.IsDefined()) { + error = std::move(postponed_error); + return 0; + } + + auto r = buffer->Read(); + if (!r.IsEmpty()) { + size_t nbytes = std::min(size, r.size); + memcpy(ptr, r.data, nbytes); + buffer->Consume(nbytes); + wake_cond.broadcast(); + base.offset += nbytes; + return nbytes; + } + + if (eof) + return 0; + + base.cond.wait(base.mutex); + } +} + +size_t +ThreadInputStream::Read(InputStream *is, void *ptr, size_t size, + Error &error) +{ + return Cast(is)->Read2(ptr, size, error); +} + +inline void +ThreadInputStream::Close2() +{ + base.mutex.lock(); + close = true; + wake_cond.signal(); + base.mutex.unlock(); + + Cancel(); + + thread.Join(); + + delete this; +} + +void +ThreadInputStream::Close(InputStream *is) +{ + Cast(is)->Close2(); +} + +inline bool +ThreadInputStream::IsEOF2() +{ + return eof; +} + +bool +ThreadInputStream::IsEOF(InputStream *is) +{ + return Cast(is)->IsEOF2(); +} diff --git a/src/input/ThreadInputStream.hxx b/src/input/ThreadInputStream.hxx new file mode 100644 index 000000000..01428d717 --- /dev/null +++ b/src/input/ThreadInputStream.hxx @@ -0,0 +1,181 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_THREAD_INPUT_STREAM_HXX +#define MPD_THREAD_INPUT_STREAM_HXX + +#include "check.h" +#include "InputStream.hxx" +#include "thread/Thread.hxx" +#include "thread/Cond.hxx" +#include "util/Cast.hxx" +#include "util/Error.hxx" + +#include <stdint.h> + +template<typename T> class CircularBuffer; + +/** + * Helper class for moving InputStream implementations with blocking + * backend library implementation to a dedicated thread. Data is + * being read into a ring buffer, and that buffer is then consumed by + * another thread using the regular #InputStream API. This class + * manages the thread and the buffer. + * + * This works only for "streams": unknown length, no seeking, no tags. + */ +class ThreadInputStream { + InputStream base; + + Thread thread; + + /** + * Signalled when the thread shall be woken up: when data from + * the buffer has been consumed and when the stream shall be + * closed. + */ + Cond wake_cond; + + Error postponed_error; + + const size_t buffer_size; + CircularBuffer<uint8_t> *buffer; + + /** + * Shall the stream be closed? + */ + bool close; + + /** + * Has the end of the stream been seen by the thread? + */ + bool eof; + +public: + ThreadInputStream(const InputPlugin &_plugin, + const char *_uri, Mutex &_mutex, Cond &_cond, + size_t _buffer_size) + :base(_plugin, _uri, _mutex, _cond), + buffer_size(_buffer_size), + buffer(nullptr), + close(false), eof(false) {} + + virtual ~ThreadInputStream(); + + /** + * Initialize the object and start the thread. + * + * @return false on error + */ + InputStream *Start(Error &error); + +protected: + void Lock() { + base.mutex.lock(); + } + + void Unlock() { + base.mutex.unlock(); + } + + const char *GetURI() const { + assert(thread.IsInside()); + + return base.uri.c_str(); + } + + void SetMimeType(const char *mime) { + assert(thread.IsInside()); + + base.mime = mime; + } + + /* to be implemented by the plugin */ + + /** + * Optional initialization after entering the thread. After + * this returns with success, the InputStream::ready flag is + * set. + * + * The #InputStream is locked. Unlock/relock it if you do a + * blocking operation. + */ + virtual bool Open(gcc_unused Error &error) { + return true; + } + + /** + * Read from the stream. + * + * The #InputStream is not locked. + * + * @return 0 on end-of-file or on error + */ + virtual size_t Read(void *ptr, size_t size, Error &error) = 0; + + /** + * Optional deinitialization before leaving the thread. + * + * The #InputStream is not locked. + */ + virtual void Close() {} + + /** + * Called from the client thread to cancel a Read() inside the + * thread. + * + * The #InputStream is not locked. + */ + virtual void Cancel() {} + +private: + +#if GCC_CHECK_VERSION(4,6) || defined(__clang__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Winvalid-offsetof" +#endif + + static constexpr ThreadInputStream *Cast(InputStream *is) { + return ContainerCast(is, ThreadInputStream, base); + } + +#if GCC_CHECK_VERSION(4,6) || defined(__clang__) +#pragma GCC diagnostic pop +#endif + + void ThreadFunc(); + static void ThreadFunc(void *ctx); + + bool Check2(Error &error); + bool Available2(); + size_t Read2(void *ptr, size_t size, Error &error); + void Close2(); + bool IsEOF2(); + +public: + /* InputPlugin callbacks */ + static bool Check(InputStream *is, Error &error); + static bool Available(InputStream *is); + static size_t Read(InputStream *is, void *ptr, size_t size, + Error &error); + static void Close(InputStream *is); + static bool IsEOF(InputStream *is); +}; + +#endif diff --git a/src/input/plugins/AlsaInputPlugin.cxx b/src/input/plugins/AlsaInputPlugin.cxx new file mode 100644 index 000000000..eae06ba6c --- /dev/null +++ b/src/input/plugins/AlsaInputPlugin.cxx @@ -0,0 +1,429 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +/* + * ALSA code based on an example by Paul Davis released under GPL here: + * http://equalarea.com/paul/alsa-audio.html + * and one by Matthias Nagorni, also GPL, here: + * http://alsamodular.sourceforge.net/alsa_programming_howto.html + */ + +#include "config.h" +#include "AlsaInputPlugin.hxx" +#include "../InputPlugin.hxx" +#include "../InputStream.hxx" +#include "util/Domain.hxx" +#include "util/Error.hxx" +#include "util/StringUtil.hxx" +#include "util/ReusableArray.hxx" +#include "util/Cast.hxx" +#include "Log.hxx" +#include "event/MultiSocketMonitor.hxx" +#include "event/DeferredMonitor.hxx" +#include "event/Call.hxx" +#include "thread/Mutex.hxx" +#include "thread/Cond.hxx" +#include "IOThread.hxx" + +#include <alsa/asoundlib.h> + +#include <assert.h> +#include <string.h> + +static constexpr Domain alsa_input_domain("alsa"); + +static constexpr const char *default_device = "hw:0,0"; + +// the following defaults are because the PcmDecoderPlugin forces CD format +static constexpr snd_pcm_format_t default_format = SND_PCM_FORMAT_S16; +static constexpr int default_channels = 2; // stereo +static constexpr unsigned int default_rate = 44100; // cd quality + +/** + * This value should be the same as the read buffer size defined in + * PcmDecoderPlugin.cxx:pcm_stream_decode(). + * We use it to calculate how many audio frames to buffer in the alsa driver + * before reading from the device. snd_pcm_readi() blocks until that many + * frames are ready. + */ +static constexpr size_t read_buffer_size = 4096; + +class AlsaInputStream final : MultiSocketMonitor, DeferredMonitor { + InputStream base; + snd_pcm_t *capture_handle; + size_t frame_size; + int frames_to_read; + bool eof; + + /** + * Is somebody waiting for data? This is set by method + * Available(). + */ + std::atomic_bool waiting; + + ReusableArray<pollfd> pfd_buffer; + +public: + AlsaInputStream(EventLoop &loop, + const char *uri, Mutex &mutex, Cond &cond, + snd_pcm_t *_handle, int _frame_size) + :MultiSocketMonitor(loop), + DeferredMonitor(loop), + base(input_plugin_alsa, uri, mutex, cond), + capture_handle(_handle), + frame_size(_frame_size), + eof(false) + { + assert(uri != nullptr); + assert(_handle != nullptr); + + /* this mime type forces use of the PcmDecoderPlugin. + Needs to be generalised when/if that decoder is + updated to support other audio formats */ + base.mime = "audio/x-mpd-cdda-pcm"; + base.ready = true; + frames_to_read = read_buffer_size / frame_size; + + snd_pcm_start(capture_handle); + + DeferredMonitor::Schedule(); + } + + ~AlsaInputStream() { + snd_pcm_close(capture_handle); + } + + using DeferredMonitor::GetEventLoop; + + static InputStream *Create(const char *uri, Mutex &mutex, Cond &cond, + Error &error); + +#if GCC_CHECK_VERSION(4,6) || defined(__clang__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Winvalid-offsetof" +#endif + + static constexpr AlsaInputStream *Cast(InputStream *is) { + return ContainerCast(is, AlsaInputStream, base); + } + +#if GCC_CHECK_VERSION(4,6) || defined(__clang__) +#pragma GCC diagnostic pop +#endif + + bool Available() { + if (snd_pcm_avail(capture_handle) > frames_to_read) + return true; + + if (!waiting.exchange(true)) + SafeInvalidateSockets(); + + return false; + } + + size_t Read(void *ptr, size_t size, Error &error); + + bool IsEOF() { + return eof; + } + +private: + static snd_pcm_t *OpenDevice(const char *device, int rate, + snd_pcm_format_t format, int channels, + Error &error); + + int Recover(int err); + + void SafeInvalidateSockets() { + DeferredMonitor::Schedule(); + } + + virtual void RunDeferred() override { + InvalidateSockets(); + } + + virtual int PrepareSockets() override; + virtual void DispatchSockets() override; +}; + +inline InputStream * +AlsaInputStream::Create(const char *uri, Mutex &mutex, Cond &cond, + Error &error) +{ + const char *const scheme = "alsa://"; + if (!StringStartsWith(uri, scheme)) + return nullptr; + + const char *device = uri + strlen(scheme); + if (strlen(device) == 0) + device = default_device; + + /* placeholders - eventually user-requested audio format will + be passed via the URI. For now we just force the + defaults */ + int rate = default_rate; + snd_pcm_format_t format = default_format; + int channels = default_channels; + + snd_pcm_t *handle = OpenDevice(device, rate, format, channels, + error); + if (handle == nullptr) + return nullptr; + + int frame_size = snd_pcm_format_width(format) / 8 * channels; + AlsaInputStream *stream = new AlsaInputStream(io_thread_get(), + uri, mutex, cond, + handle, frame_size); + return &stream->base; +} + +inline size_t +AlsaInputStream::Read(void *ptr, size_t size, Error &error) +{ + assert(ptr != nullptr); + + int num_frames = size / frame_size; + int ret; + while ((ret = snd_pcm_readi(capture_handle, ptr, num_frames)) < 0) { + if (Recover(ret) < 0) { + eof = true; + error.Format(alsa_input_domain, + "PCM error - stream aborted"); + return 0; + } + } + + size_t nbytes = ret * frame_size; + base.offset += nbytes; + return nbytes; +} + +int +AlsaInputStream::PrepareSockets() +{ + if (!waiting) { + ClearSocketList(); + return -1; + } + + int count = snd_pcm_poll_descriptors_count(capture_handle); + if (count < 0) { + ClearSocketList(); + return -1; + } + + struct pollfd *pfds = pfd_buffer.Get(count); + + count = snd_pcm_poll_descriptors(capture_handle, pfds, count); + if (count < 0) + count = 0; + + ReplaceSocketList(pfds, count); + return -1; +} + +void +AlsaInputStream::DispatchSockets() +{ + waiting = false; + + const ScopeLock protect(base.mutex); + /* wake up the thread that is waiting for more data */ + base.cond.broadcast(); +} + +inline int +AlsaInputStream::Recover(int err) +{ + switch(err) { + case -EPIPE: + LogDebug(alsa_input_domain, "Buffer Overrun"); + // drop through + case -ESTRPIPE: + case -EINTR: + err = snd_pcm_recover(capture_handle, err, 1); + break; + default: + // something broken somewhere, give up + err = -1; + } + return err; +} + +inline snd_pcm_t * +AlsaInputStream::OpenDevice(const char *device, + int rate, snd_pcm_format_t format, int channels, + Error &error) +{ + snd_pcm_t *capture_handle; + int err; + if ((err = snd_pcm_open(&capture_handle, device, + SND_PCM_STREAM_CAPTURE, 0)) < 0) { + error.Format(alsa_input_domain, "Failed to open device: %s (%s)", device, snd_strerror(err)); + return nullptr; + } + + snd_pcm_hw_params_t *hw_params; + if ((err = snd_pcm_hw_params_malloc(&hw_params)) < 0) { + error.Format(alsa_input_domain, "Cannot allocate hardware parameter structure (%s)", snd_strerror(err)); + snd_pcm_close(capture_handle); + return nullptr; + } + + if ((err = snd_pcm_hw_params_any(capture_handle, hw_params)) < 0) { + error.Format(alsa_input_domain, "Cannot initialize hardware parameter structure (%s)", snd_strerror(err)); + snd_pcm_hw_params_free(hw_params); + snd_pcm_close(capture_handle); + return nullptr; + } + + if ((err = snd_pcm_hw_params_set_access(capture_handle, hw_params, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0) { + error.Format(alsa_input_domain, "Cannot set access type (%s)", snd_strerror (err)); + snd_pcm_hw_params_free(hw_params); + snd_pcm_close(capture_handle); + return nullptr; + } + + if ((err = snd_pcm_hw_params_set_format(capture_handle, hw_params, format)) < 0) { + snd_pcm_hw_params_free(hw_params); + snd_pcm_close(capture_handle); + error.Format(alsa_input_domain, "Cannot set sample format (%s)", snd_strerror (err)); + return nullptr; + } + + if ((err = snd_pcm_hw_params_set_channels(capture_handle, hw_params, channels)) < 0) { + snd_pcm_hw_params_free(hw_params); + snd_pcm_close(capture_handle); + error.Format(alsa_input_domain, "Cannot set channels (%s)", snd_strerror (err)); + return nullptr; + } + + if ((err = snd_pcm_hw_params_set_rate(capture_handle, hw_params, rate, 0)) < 0) { + snd_pcm_hw_params_free(hw_params); + snd_pcm_close(capture_handle); + error.Format(alsa_input_domain, "Cannot set sample rate (%s)", snd_strerror (err)); + return nullptr; + } + + /* period needs to be big enough so that poll() doesn't fire too often, + * but small enough that buffer overruns don't occur if Read() is not + * invoked often enough. + * the calculation here is empirical; however all measurements were + * done using 44100:16:2. When we extend this plugin to support + * other audio formats then this may need to be revisited */ + snd_pcm_uframes_t period = read_buffer_size * 2; + int direction = -1; + if ((err = snd_pcm_hw_params_set_period_size_near(capture_handle, hw_params, + &period, &direction)) < 0) { + error.Format(alsa_input_domain, "Cannot set period size (%s)", + snd_strerror(err)); + snd_pcm_hw_params_free(hw_params); + snd_pcm_close(capture_handle); + return nullptr; + } + + if ((err = snd_pcm_hw_params(capture_handle, hw_params)) < 0) { + error.Format(alsa_input_domain, "Cannot set parameters (%s)", + snd_strerror(err)); + snd_pcm_hw_params_free(hw_params); + snd_pcm_close(capture_handle); + return nullptr; + } + + snd_pcm_hw_params_free (hw_params); + + snd_pcm_sw_params_t *sw_params; + + snd_pcm_sw_params_malloc(&sw_params); + snd_pcm_sw_params_current(capture_handle, sw_params); + + if ((err = snd_pcm_sw_params_set_start_threshold(capture_handle, sw_params, + period)) < 0) { + error.Format(alsa_input_domain, + "unable to set start threshold (%s)", snd_strerror(err)); + snd_pcm_sw_params_free(sw_params); + snd_pcm_close(capture_handle); + return nullptr; + } + + if ((err = snd_pcm_sw_params(capture_handle, sw_params)) < 0) { + error.Format(alsa_input_domain, + "unable to install sw params (%s)", snd_strerror(err)); + snd_pcm_sw_params_free(sw_params); + snd_pcm_close(capture_handle); + return nullptr; + } + + snd_pcm_sw_params_free(sw_params); + + snd_pcm_prepare(capture_handle); + + return capture_handle; +} + +/*######################### Plugin Functions ##############################*/ + +static InputStream * +alsa_input_open(const char *uri, Mutex &mutex, Cond &cond, Error &error) +{ + return AlsaInputStream::Create(uri, mutex, cond, error); +} + +static void +alsa_input_close(InputStream *is) +{ + AlsaInputStream *ais = AlsaInputStream::Cast(is); + delete ais; +} + +static bool +alsa_input_available(InputStream *is) +{ + AlsaInputStream *ais = AlsaInputStream::Cast(is); + return ais->Available(); +} + +static size_t +alsa_input_read(InputStream *is, void *ptr, size_t size, Error &error) +{ + AlsaInputStream *ais = AlsaInputStream::Cast(is); + return ais->Read(ptr, size, error); +} + +static bool +alsa_input_eof(gcc_unused InputStream *is) +{ + AlsaInputStream *ais = AlsaInputStream::Cast(is); + return ais->IsEOF(); +} + +const struct InputPlugin input_plugin_alsa = { + "alsa", + nullptr, + nullptr, + alsa_input_open, + alsa_input_close, + nullptr, + nullptr, + nullptr, + alsa_input_available, + alsa_input_read, + alsa_input_eof, + nullptr, +}; diff --git a/src/input/plugins/AlsaInputPlugin.hxx b/src/input/plugins/AlsaInputPlugin.hxx new file mode 100644 index 000000000..dddf7dfd7 --- /dev/null +++ b/src/input/plugins/AlsaInputPlugin.hxx @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_ALSA_INPUT_PLUGIN_HXX +#define MPD_ALSA_INPUT_PLUGIN_HXX + +#include "../InputPlugin.hxx" + +extern const struct InputPlugin input_plugin_alsa; + + +#endif diff --git a/src/input/plugins/ArchiveInputPlugin.cxx b/src/input/plugins/ArchiveInputPlugin.cxx new file mode 100644 index 000000000..f49669674 --- /dev/null +++ b/src/input/plugins/ArchiveInputPlugin.cxx @@ -0,0 +1,100 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "ArchiveInputPlugin.hxx" +#include "archive/ArchiveDomain.hxx" +#include "archive/ArchiveLookup.hxx" +#include "archive/ArchiveList.hxx" +#include "archive/ArchivePlugin.hxx" +#include "archive/ArchiveFile.hxx" +#include "../InputPlugin.hxx" +#include "fs/Traits.hxx" +#include "fs/Path.hxx" +#include "util/Alloc.hxx" +#include "Log.hxx" + +#include <stdlib.h> + +/** + * select correct archive plugin to handle the input stream + * may allow stacking of archive plugins. for example for handling + * tar.gz a gzip handler opens file (through inputfile stream) + * then it opens a tar handler and sets gzip inputstream as + * parent_stream so tar plugin fetches file data from gzip + * plugin and gzip fetches file from disk + */ +static InputStream * +input_archive_open(const char *pathname, + Mutex &mutex, Cond &cond, + Error &error) +{ + const ArchivePlugin *arplug; + InputStream *is; + + if (!PathTraitsFS::IsAbsolute(pathname)) + return nullptr; + + char *pname = strdup(pathname); + // archive_lookup will modify pname when true is returned + const char *archive, *filename, *suffix; + if (!archive_lookup(pname, &archive, &filename, &suffix)) { + FormatDebug(archive_domain, + "not an archive, lookup %s failed", pname); + free(pname); + return nullptr; + } + + //check which archive plugin to use (by ext) + arplug = archive_plugin_from_suffix(suffix); + if (!arplug) { + FormatWarning(archive_domain, + "can't handle archive %s", archive); + free(pname); + return nullptr; + } + + auto file = archive_file_open(arplug, Path::FromFS(archive), error); + if (file == nullptr) { + free(pname); + return nullptr; + } + + //setup fileops + is = file->OpenStream(filename, mutex, cond, error); + free(pname); + file->Close(); + + return is; +} + +const InputPlugin input_plugin_archive = { + "archive", + nullptr, + nullptr, + input_archive_open, + nullptr, + nullptr, + nullptr, + nullptr, + nullptr, + nullptr, + nullptr, + nullptr, +}; diff --git a/src/input/plugins/ArchiveInputPlugin.hxx b/src/input/plugins/ArchiveInputPlugin.hxx new file mode 100644 index 000000000..024723726 --- /dev/null +++ b/src/input/plugins/ArchiveInputPlugin.hxx @@ -0,0 +1,25 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_INPUT_ARCHIVE_HXX +#define MPD_INPUT_ARCHIVE_HXX + +extern const struct InputPlugin input_plugin_archive; + +#endif diff --git a/src/input/plugins/CdioParanoiaInputPlugin.cxx b/src/input/plugins/CdioParanoiaInputPlugin.cxx new file mode 100644 index 000000000..767b2600f --- /dev/null +++ b/src/input/plugins/CdioParanoiaInputPlugin.cxx @@ -0,0 +1,407 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +/** + * CD-Audio handling (requires libcdio_paranoia) + */ + +#include "config.h" +#include "CdioParanoiaInputPlugin.hxx" +#include "../InputStream.hxx" +#include "../InputPlugin.hxx" +#include "util/StringUtil.hxx" +#include "util/Error.hxx" +#include "util/Domain.hxx" +#include "system/ByteOrder.hxx" +#include "fs/AllocatedPath.hxx" +#include "Log.hxx" +#include "config/ConfigData.hxx" +#include "config/ConfigError.hxx" + +#include <stdio.h> +#include <stdint.h> +#include <stddef.h> +#include <string.h> +#include <stdlib.h> +#include <glib.h> +#include <assert.h> + +#ifdef HAVE_CDIO_PARANOIA_PARANOIA_H +#include <cdio/paranoia/paranoia.h> +#else +#include <cdio/paranoia.h> +#endif + +#include <cdio/cd_types.h> + +struct CdioParanoiaInputStream { + InputStream base; + + cdrom_drive_t *drv; + CdIo_t *cdio; + cdrom_paranoia_t *para; + + lsn_t lsn_from, lsn_to; + int lsn_relofs; + + int trackno; + + char buffer[CDIO_CD_FRAMESIZE_RAW]; + int buffer_lsn; + + CdioParanoiaInputStream(const char *uri, Mutex &mutex, Cond &cond, + int _trackno) + :base(input_plugin_cdio_paranoia, uri, mutex, cond), + drv(nullptr), cdio(nullptr), para(nullptr), + trackno(_trackno) + { + } + + ~CdioParanoiaInputStream() { + if (para != nullptr) + cdio_paranoia_free(para); + if (drv != nullptr) + cdio_cddap_close_no_free_cdio(drv); + if (cdio != nullptr) + cdio_destroy(cdio); + } +}; + +static constexpr Domain cdio_domain("cdio"); + +static bool default_reverse_endian; + +static InputPlugin::InitResult +input_cdio_init(const config_param ¶m, Error &error) +{ + const char *value = param.GetBlockValue("default_byte_order"); + if (value != nullptr) { + if (strcmp(value, "little_endian") == 0) + default_reverse_endian = IsBigEndian(); + else if (strcmp(value, "big_endian") == 0) + default_reverse_endian = IsLittleEndian(); + else { + error.Format(config_domain, 0, + "Unrecognized 'default_byte_order' setting: %s", + value); + return InputPlugin::InitResult::ERROR; + } + } + + return InputPlugin::InitResult::SUCCESS; +} + +static void +input_cdio_close(InputStream *is) +{ + CdioParanoiaInputStream *i = (CdioParanoiaInputStream *)is; + + delete i; +} + +struct cdio_uri { + char device[64]; + int track; +}; + +static bool +parse_cdio_uri(struct cdio_uri *dest, const char *src, Error &error) +{ + if (!StringStartsWith(src, "cdda://")) + return false; + + src += 7; + + if (*src == 0) { + /* play the whole CD in the default drive */ + dest->device[0] = 0; + dest->track = -1; + return true; + } + + const char *slash = strrchr(src, '/'); + if (slash == nullptr) { + /* play the whole CD in the specified drive */ + g_strlcpy(dest->device, src, sizeof(dest->device)); + dest->track = -1; + return true; + } + + size_t device_length = slash - src; + if (device_length >= sizeof(dest->device)) + device_length = sizeof(dest->device) - 1; + + memcpy(dest->device, src, device_length); + dest->device[device_length] = 0; + + const char *track = slash + 1; + + char *endptr; + dest->track = strtoul(track, &endptr, 10); + if (*endptr != 0) { + error.Set(cdio_domain, "Malformed track number"); + return false; + } + + if (endptr == track) + /* play the whole CD */ + dest->track = -1; + + return true; +} + +static AllocatedPath +cdio_detect_device(void) +{ + char **devices = cdio_get_devices_with_cap(nullptr, CDIO_FS_AUDIO, + false); + if (devices == nullptr) + return AllocatedPath::Null(); + + AllocatedPath path = AllocatedPath::FromFS(devices[0]); + cdio_free_device_list(devices); + return path; +} + +static InputStream * +input_cdio_open(const char *uri, + Mutex &mutex, Cond &cond, + Error &error) +{ + struct cdio_uri parsed_uri; + if (!parse_cdio_uri(&parsed_uri, uri, error)) + return nullptr; + + CdioParanoiaInputStream *i = + new CdioParanoiaInputStream(uri, mutex, cond, + parsed_uri.track); + + /* get list of CD's supporting CD-DA */ + const AllocatedPath device = parsed_uri.device[0] != 0 + ? AllocatedPath::FromFS(parsed_uri.device) + : cdio_detect_device(); + if (device.IsNull()) { + error.Set(cdio_domain, + "Unable find or access a CD-ROM drive with an audio CD in it."); + delete i; + return nullptr; + } + + /* Found such a CD-ROM with a CD-DA loaded. Use the first drive in the list. */ + i->cdio = cdio_open(device.c_str(), DRIVER_UNKNOWN); + + i->drv = cdio_cddap_identify_cdio(i->cdio, 1, nullptr); + + if ( !i->drv ) { + error.Set(cdio_domain, "Unable to identify audio CD disc."); + delete i; + return nullptr; + } + + cdda_verbose_set(i->drv, CDDA_MESSAGE_FORGETIT, CDDA_MESSAGE_FORGETIT); + + if ( 0 != cdio_cddap_open(i->drv) ) { + error.Set(cdio_domain, "Unable to open disc."); + delete i; + return nullptr; + } + + bool reverse_endian; + switch (data_bigendianp(i->drv)) { + case -1: + LogDebug(cdio_domain, "drive returns unknown audio data"); + reverse_endian = default_reverse_endian; + break; + + case 0: + LogDebug(cdio_domain, "drive returns audio data Little Endian"); + reverse_endian = IsBigEndian(); + break; + + case 1: + LogDebug(cdio_domain, "drive returns audio data Big Endian"); + reverse_endian = IsLittleEndian(); + break; + + default: + error.Format(cdio_domain, "Drive returns unknown data type %d", + data_bigendianp(i->drv)); + delete i; + return nullptr; + } + + i->lsn_relofs = 0; + + if (i->trackno >= 0) { + i->lsn_from = cdio_get_track_lsn(i->cdio, i->trackno); + i->lsn_to = cdio_get_track_last_lsn(i->cdio, i->trackno); + } else { + i->lsn_from = 0; + i->lsn_to = cdio_get_disc_last_lsn(i->cdio); + } + + i->para = cdio_paranoia_init(i->drv); + + /* Set reading mode for full paranoia, but allow skipping sectors. */ + paranoia_modeset(i->para, PARANOIA_MODE_FULL^PARANOIA_MODE_NEVERSKIP); + + /* seek to beginning of the track */ + cdio_paranoia_seek(i->para, i->lsn_from, SEEK_SET); + + i->base.ready = true; + i->base.seekable = true; + i->base.size = (i->lsn_to - i->lsn_from + 1) * CDIO_CD_FRAMESIZE_RAW; + + /* hack to make MPD select the "pcm" decoder plugin */ + i->base.mime = reverse_endian + ? "audio/x-mpd-cdda-pcm-reverse" + : "audio/x-mpd-cdda-pcm"; + + return &i->base; +} + +static bool +input_cdio_seek(InputStream *is, + InputPlugin::offset_type offset, int whence, Error &error) +{ + CdioParanoiaInputStream *cis = (CdioParanoiaInputStream *)is; + + /* calculate absolute offset */ + switch (whence) { + case SEEK_SET: + break; + case SEEK_CUR: + offset += cis->base.offset; + break; + case SEEK_END: + offset += cis->base.size; + break; + } + + if (offset < 0 || offset > cis->base.size) { + error.Format(cdio_domain, "Invalid offset to seek %ld (%ld)", + (long int)offset, (long int)cis->base.size); + return false; + } + + /* simple case */ + if (offset == cis->base.offset) + return true; + + /* calculate current LSN */ + cis->lsn_relofs = offset / CDIO_CD_FRAMESIZE_RAW; + cis->base.offset = offset; + + cdio_paranoia_seek(cis->para, cis->lsn_from + cis->lsn_relofs, SEEK_SET); + + return true; +} + +static size_t +input_cdio_read(InputStream *is, void *ptr, size_t length, + Error &error) +{ + CdioParanoiaInputStream *cis = (CdioParanoiaInputStream *)is; + size_t nbytes = 0; + int diff; + size_t len, maxwrite; + int16_t *rbuf; + char *s_err, *s_mess; + char *wptr = (char *) ptr; + + while (length > 0) { + + + /* end of track ? */ + if (cis->lsn_from + cis->lsn_relofs > cis->lsn_to) + break; + + //current sector was changed ? + if (cis->lsn_relofs != cis->buffer_lsn) { + rbuf = cdio_paranoia_read(cis->para, nullptr); + + s_err = cdda_errors(cis->drv); + if (s_err) { + FormatError(cdio_domain, + "paranoia_read: %s", s_err); + free(s_err); + } + s_mess = cdda_messages(cis->drv); + if (s_mess) { + free(s_mess); + } + if (!rbuf) { + error.Set(cdio_domain, + "paranoia read error. Stopping."); + return 0; + } + //store current buffer + memcpy(cis->buffer, rbuf, CDIO_CD_FRAMESIZE_RAW); + cis->buffer_lsn = cis->lsn_relofs; + } else { + //use cached sector + rbuf = (int16_t*) cis->buffer; + } + + //correct offset + diff = cis->base.offset - cis->lsn_relofs * CDIO_CD_FRAMESIZE_RAW; + + assert(diff >= 0 && diff < CDIO_CD_FRAMESIZE_RAW); + + maxwrite = CDIO_CD_FRAMESIZE_RAW - diff; //# of bytes pending in current buffer + len = (length < maxwrite? length : maxwrite); + + //skip diff bytes from this lsn + memcpy(wptr, ((char*)rbuf) + diff, len); + //update pointer + wptr += len; + nbytes += len; + + //update offset + cis->base.offset += len; + cis->lsn_relofs = cis->base.offset / CDIO_CD_FRAMESIZE_RAW; + //update length + length -= len; + } + + return nbytes; +} + +static bool +input_cdio_eof(InputStream *is) +{ + CdioParanoiaInputStream *cis = (CdioParanoiaInputStream *)is; + + return (cis->lsn_from + cis->lsn_relofs > cis->lsn_to); +} + +const InputPlugin input_plugin_cdio_paranoia = { + "cdio_paranoia", + input_cdio_init, + nullptr, + input_cdio_open, + input_cdio_close, + nullptr, + nullptr, + nullptr, + nullptr, + input_cdio_read, + input_cdio_eof, + input_cdio_seek, +}; diff --git a/src/input/plugins/CdioParanoiaInputPlugin.hxx b/src/input/plugins/CdioParanoiaInputPlugin.hxx new file mode 100644 index 000000000..e2804e8c7 --- /dev/null +++ b/src/input/plugins/CdioParanoiaInputPlugin.hxx @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_CDIO_PARANOIA_INPUT_PLUGIN_HXX +#define MPD_CDIO_PARANOIA_INPUT_PLUGIN_HXX + +/** + * An input plugin based on libcdio_paranoia library. + */ +extern const struct InputPlugin input_plugin_cdio_paranoia; + +#endif diff --git a/src/input/plugins/CurlInputPlugin.cxx b/src/input/plugins/CurlInputPlugin.cxx new file mode 100644 index 000000000..37509e998 --- /dev/null +++ b/src/input/plugins/CurlInputPlugin.cxx @@ -0,0 +1,1160 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "CurlInputPlugin.hxx" +#include "../InputStream.hxx" +#include "../InputPlugin.hxx" +#include "config/ConfigGlobal.hxx" +#include "config/ConfigData.hxx" +#include "tag/Tag.hxx" +#include "tag/TagBuilder.hxx" +#include "IcyMetaDataParser.hxx" +#include "event/SocketMonitor.hxx" +#include "event/TimeoutMonitor.hxx" +#include "event/Call.hxx" +#include "IOThread.hxx" +#include "util/ASCII.hxx" +#include "util/CharUtil.hxx" +#include "util/NumberParser.hxx" +#include "util/CircularBuffer.hxx" +#include "util/HugeAllocator.hxx" +#include "util/Error.hxx" +#include "util/Domain.hxx" +#include "Log.hxx" + +#include <assert.h> + +#if defined(WIN32) + #include <winsock2.h> +#else + #include <sys/select.h> +#endif + +#include <string.h> + +#include <curl/curl.h> + +#if LIBCURL_VERSION_NUM < 0x071200 +#error libcurl is too old +#endif + +/** + * Do not buffer more than this number of bytes. It should be a + * reasonable limit that doesn't make low-end machines suffer too + * much, but doesn't cause stuttering on high-latency lines. + */ +static const size_t CURL_MAX_BUFFERED = 512 * 1024; + +/** + * Resume the stream at this number of bytes after it has been paused. + */ +static const size_t CURL_RESUME_AT = 384 * 1024; + +struct CurlInputStream { + InputStream base; + + /* some buffers which were passed to libcurl, which we have + too free */ + char range[32]; + struct curl_slist *request_headers; + + /** the curl handles */ + CURL *easy; + + /** + * A buffer where input_curl_writefunction() appends + * to, and input_curl_read() reads from. + */ + CircularBuffer<uint8_t> buffer; + + /** + * Is the connection currently paused? That happens when the + * buffer was getting too large. It will be unpaused when the + * buffer is below the threshold again. + */ + bool paused; + + /** error message provided by libcurl */ + char error_buffer[CURL_ERROR_SIZE]; + + /** parser for icy-metadata */ + IcyMetaDataParser icy; + + /** the stream name from the icy-name response header */ + std::string meta_name; + + /** the tag object ready to be requested via + InputStream::ReadTag() */ + Tag *tag; + + Error postponed_error; + + CurlInputStream(const char *url, Mutex &mutex, Cond &cond, + void *_buffer) + :base(input_plugin_curl, url, mutex, cond), + request_headers(nullptr), + buffer((uint8_t *)_buffer, CURL_MAX_BUFFERED), + paused(false), + tag(nullptr) {} + + ~CurlInputStream(); + + CurlInputStream(const CurlInputStream &) = delete; + CurlInputStream &operator=(const CurlInputStream &) = delete; + + static InputStream *Open(const char *url, Mutex &mutex, Cond &cond, + Error &error); + + bool Check(Error &error); + + bool IsEOF() const { + return easy == nullptr && buffer.IsEmpty(); + } + + bool Seek(InputPlugin::offset_type offset, int whence, Error &error); + + Tag *ReadTag(); + + bool IsAvailable() const { + return postponed_error.IsDefined() || easy == nullptr || + !buffer.IsEmpty(); + } + + size_t Read(void *ptr, size_t size, Error &error); + + bool InitEasy(Error &error); + + /** + * Frees the current "libcurl easy" handle, and everything + * associated with it. + * + * Runs in the I/O thread. + */ + void FreeEasy(); + + /** + * Frees the current "libcurl easy" handle, and everything associated + * with it. + * + * The mutex must not be locked. + */ + void FreeEasyIndirect(); + + void HeaderReceived(const char *name, std::string &&value); + + size_t DataReceived(const void *ptr, size_t size); + + void Resume(); + bool FillBuffer(Error &error); + + /** + * Returns the number of bytes stored in the buffer. + * + * The caller must lock the mutex. + */ + gcc_pure + size_t GetTotalBufferSize() const { + return buffer.GetSize(); + } + + void CopyIcyTag(); + + /** + * A HTTP request is finished. + * + * Runs in the I/O thread. The caller must not hold locks. + */ + void RequestDone(CURLcode result, long status); +}; + +class CurlMulti; + +/** + * Monitor for one socket created by CURL. + */ +class CurlSocket final : SocketMonitor { + CurlMulti &multi; + +public: + CurlSocket(CurlMulti &_multi, EventLoop &_loop, int _fd) + :SocketMonitor(_fd, _loop), multi(_multi) {} + + ~CurlSocket() { + /* TODO: sometimes, CURL uses CURL_POLL_REMOVE after + closing the socket, and sometimes, it uses + CURL_POLL_REMOVE just to move the (still open) + connection to the pool; in the first case, + Abandon() would be most appropriate, but it breaks + the second case - is that a CURL bug? is there a + better solution? */ + } + + /** + * Callback function for CURLMOPT_SOCKETFUNCTION. + */ + static int SocketFunction(CURL *easy, + curl_socket_t s, int action, + void *userp, void *socketp); + + virtual bool OnSocketReady(unsigned flags) override; + +private: + static constexpr int FlagsToCurlCSelect(unsigned flags) { + return (flags & (READ | HANGUP) ? CURL_CSELECT_IN : 0) | + (flags & WRITE ? CURL_CSELECT_OUT : 0) | + (flags & ERROR ? CURL_CSELECT_ERR : 0); + } + + gcc_const + static unsigned CurlPollToFlags(int action) { + switch (action) { + case CURL_POLL_NONE: + return 0; + + case CURL_POLL_IN: + return READ; + + case CURL_POLL_OUT: + return WRITE; + + case CURL_POLL_INOUT: + return READ|WRITE; + } + + assert(false); + gcc_unreachable(); + } +}; + +/** + * Manager for the global CURLM object. + */ +class CurlMulti final : private TimeoutMonitor { + CURLM *const multi; + +public: + CurlMulti(EventLoop &_loop, CURLM *_multi); + + ~CurlMulti() { + curl_multi_cleanup(multi); + } + + bool Add(CurlInputStream *c, Error &error); + void Remove(CurlInputStream *c); + + /** + * Check for finished HTTP responses. + * + * Runs in the I/O thread. The caller must not hold locks. + */ + void ReadInfo(); + + void Assign(curl_socket_t fd, CurlSocket &cs) { + curl_multi_assign(multi, fd, &cs); + } + + void SocketAction(curl_socket_t fd, int ev_bitmask); + + void InvalidateSockets() { + SocketAction(CURL_SOCKET_TIMEOUT, 0); + } + + /** + * This is a kludge to allow pausing/resuming a stream with + * libcurl < 7.32.0. Read the curl_easy_pause manpage for + * more information. + */ + void ResumeSockets() { + int running_handles; + curl_multi_socket_all(multi, &running_handles); + } + +private: + static int TimerFunction(CURLM *multi, long timeout_ms, void *userp); + + virtual void OnTimeout() override; +}; + +/** + * libcurl version number encoded in a 24 bit integer. + */ +static unsigned curl_version_num; + +/** libcurl should accept "ICY 200 OK" */ +static struct curl_slist *http_200_aliases; + +/** HTTP proxy settings */ +static const char *proxy, *proxy_user, *proxy_password; +static unsigned proxy_port; + +static CurlMulti *curl_multi; + +static constexpr Domain http_domain("http"); +static constexpr Domain curl_domain("curl"); +static constexpr Domain curlm_domain("curlm"); + +CurlMulti::CurlMulti(EventLoop &_loop, CURLM *_multi) + :TimeoutMonitor(_loop), multi(_multi) +{ + curl_multi_setopt(multi, CURLMOPT_SOCKETFUNCTION, + CurlSocket::SocketFunction); + curl_multi_setopt(multi, CURLMOPT_SOCKETDATA, this); + + curl_multi_setopt(multi, CURLMOPT_TIMERFUNCTION, TimerFunction); + curl_multi_setopt(multi, CURLMOPT_TIMERDATA, this); +} + +/** + * Find a request by its CURL "easy" handle. + * + * Runs in the I/O thread. No lock needed. + */ +gcc_pure +static CurlInputStream * +input_curl_find_request(CURL *easy) +{ + assert(io_thread_inside()); + + void *p; + CURLcode code = curl_easy_getinfo(easy, CURLINFO_PRIVATE, &p); + if (code != CURLE_OK) + return nullptr; + + return (CurlInputStream *)p; +} + +inline void +CurlInputStream::Resume() +{ + assert(io_thread_inside()); + + if (paused) { + paused = false; + curl_easy_pause(easy, CURLPAUSE_CONT); + + if (curl_version_num < 0x072000) + /* libcurl older than 7.32.0 does not update + its sockets after curl_easy_pause(); force + libcurl to do it now */ + curl_multi->ResumeSockets(); + + curl_multi->InvalidateSockets(); + } +} + +int +CurlSocket::SocketFunction(gcc_unused CURL *easy, + curl_socket_t s, int action, + void *userp, void *socketp) { + CurlMulti &multi = *(CurlMulti *)userp; + CurlSocket *cs = (CurlSocket *)socketp; + + assert(io_thread_inside()); + + if (action == CURL_POLL_REMOVE) { + delete cs; + return 0; + } + + if (cs == nullptr) { + cs = new CurlSocket(multi, io_thread_get(), s); + multi.Assign(s, *cs); + } else { +#ifdef USE_EPOLL + /* when using epoll, we need to unregister the socket + each time this callback is invoked, because older + CURL versions may omit the CURL_POLL_REMOVE call + when the socket has been closed and recreated with + the same file number (bug found in CURL 7.26, CURL + 7.33 not affected); in that case, epoll refuses the + EPOLL_CTL_MOD because it does not know the new + socket yet */ + cs->Cancel(); +#endif + } + + unsigned flags = CurlPollToFlags(action); + if (flags != 0) + cs->Schedule(flags); + return 0; +} + +bool +CurlSocket::OnSocketReady(unsigned flags) +{ + assert(io_thread_inside()); + + multi.SocketAction(Get(), FlagsToCurlCSelect(flags)); + return true; +} + +/** + * Runs in the I/O thread. No lock needed. + */ +inline bool +CurlMulti::Add(CurlInputStream *c, Error &error) +{ + assert(io_thread_inside()); + assert(c != nullptr); + assert(c->easy != nullptr); + + CURLMcode mcode = curl_multi_add_handle(multi, c->easy); + if (mcode != CURLM_OK) { + error.Format(curlm_domain, mcode, + "curl_multi_add_handle() failed: %s", + curl_multi_strerror(mcode)); + return false; + } + + InvalidateSockets(); + return true; +} + +/** + * Call input_curl_easy_add() in the I/O thread. May be called from + * any thread. Caller must not hold a mutex. + */ +static bool +input_curl_easy_add_indirect(CurlInputStream *c, Error &error) +{ + assert(c != nullptr); + assert(c->easy != nullptr); + + bool result; + BlockingCall(io_thread_get(), [c, &error, &result](){ + result = curl_multi->Add(c, error); + }); + return result; +} + +inline void +CurlMulti::Remove(CurlInputStream *c) +{ + curl_multi_remove_handle(multi, c->easy); +} + +void +CurlInputStream::FreeEasy() +{ + assert(io_thread_inside()); + + if (easy == nullptr) + return; + + curl_multi->Remove(this); + + curl_easy_cleanup(easy); + easy = nullptr; + + curl_slist_free_all(request_headers); + request_headers = nullptr; +} + +void +CurlInputStream::FreeEasyIndirect() +{ + BlockingCall(io_thread_get(), [this](){ + FreeEasy(); + curl_multi->InvalidateSockets(); + }); + + assert(easy == nullptr); +} + +inline void +CurlInputStream::RequestDone(CURLcode result, long status) +{ + assert(io_thread_inside()); + assert(!postponed_error.IsDefined()); + + FreeEasy(); + + const ScopeLock protect(base.mutex); + + if (result != CURLE_OK) { + postponed_error.Format(curl_domain, result, + "curl failed: %s", error_buffer); + } else if (status < 200 || status >= 300) { + postponed_error.Format(http_domain, status, + "got HTTP status %ld", + status); + } + + base.ready = true; + base.cond.broadcast(); +} + +static void +input_curl_handle_done(CURL *easy_handle, CURLcode result) +{ + CurlInputStream *c = input_curl_find_request(easy_handle); + assert(c != nullptr); + + long status = 0; + curl_easy_getinfo(easy_handle, CURLINFO_RESPONSE_CODE, &status); + + c->RequestDone(result, status); +} + +void +CurlMulti::SocketAction(curl_socket_t fd, int ev_bitmask) +{ + int running_handles; + CURLMcode mcode = curl_multi_socket_action(multi, fd, ev_bitmask, + &running_handles); + if (mcode != CURLM_OK) + FormatError(curlm_domain, + "curl_multi_socket_action() failed: %s", + curl_multi_strerror(mcode)); + + ReadInfo(); +} + +/** + * Check for finished HTTP responses. + * + * Runs in the I/O thread. The caller must not hold locks. + */ +inline void +CurlMulti::ReadInfo() +{ + assert(io_thread_inside()); + + CURLMsg *msg; + int msgs_in_queue; + + while ((msg = curl_multi_info_read(multi, + &msgs_in_queue)) != nullptr) { + if (msg->msg == CURLMSG_DONE) + input_curl_handle_done(msg->easy_handle, msg->data.result); + } +} + +int +CurlMulti::TimerFunction(gcc_unused CURLM *_multi, long timeout_ms, void *userp) +{ + CurlMulti &multi = *(CurlMulti *)userp; + assert(_multi == multi.multi); + + if (timeout_ms < 0) { + multi.Cancel(); + return 0; + } + + if (timeout_ms >= 0 && timeout_ms < 10) + /* CURL 7.21.1 likes to report "timeout=0", which + means we're running in a busy loop. Quite a bad + idea to waste so much CPU. Let's use a lower limit + of 10ms. */ + timeout_ms = 10; + + multi.Schedule(timeout_ms); + return 0; +} + +void +CurlMulti::OnTimeout() +{ + SocketAction(CURL_SOCKET_TIMEOUT, 0); +} + +/* + * InputPlugin methods + * + */ + +static InputPlugin::InitResult +input_curl_init(const config_param ¶m, Error &error) +{ + CURLcode code = curl_global_init(CURL_GLOBAL_ALL); + if (code != CURLE_OK) { + error.Format(curl_domain, code, + "curl_global_init() failed: %s", + curl_easy_strerror(code)); + return InputPlugin::InitResult::UNAVAILABLE; + } + + const auto version_info = curl_version_info(CURLVERSION_FIRST); + if (version_info != nullptr) { + FormatDebug(curl_domain, "version %s", version_info->version); + if (version_info->features & CURL_VERSION_SSL) + FormatDebug(curl_domain, "with %s", + version_info->ssl_version); + + curl_version_num = version_info->version_num; + } + + http_200_aliases = curl_slist_append(http_200_aliases, "ICY 200 OK"); + + proxy = param.GetBlockValue("proxy"); + proxy_port = param.GetBlockValue("proxy_port", 0u); + proxy_user = param.GetBlockValue("proxy_user"); + proxy_password = param.GetBlockValue("proxy_password"); + + if (proxy == nullptr) { + /* deprecated proxy configuration */ + proxy = config_get_string(CONF_HTTP_PROXY_HOST, nullptr); + proxy_port = config_get_positive(CONF_HTTP_PROXY_PORT, 0); + proxy_user = config_get_string(CONF_HTTP_PROXY_USER, nullptr); + proxy_password = config_get_string(CONF_HTTP_PROXY_PASSWORD, + ""); + } + + CURLM *multi = curl_multi_init(); + if (multi == nullptr) { + curl_slist_free_all(http_200_aliases); + curl_global_cleanup(); + error.Set(curl_domain, 0, "curl_multi_init() failed"); + return InputPlugin::InitResult::UNAVAILABLE; + } + + curl_multi = new CurlMulti(io_thread_get(), multi); + return InputPlugin::InitResult::SUCCESS; +} + +static void +input_curl_finish(void) +{ + BlockingCall(io_thread_get(), [](){ + delete curl_multi; + }); + + curl_slist_free_all(http_200_aliases); + + curl_global_cleanup(); +} + +CurlInputStream::~CurlInputStream() +{ + delete tag; + + FreeEasyIndirect(); + + buffer.Clear(); + HugeFree(buffer.Write().data, CURL_MAX_BUFFERED); +} + +inline bool +CurlInputStream::Check(Error &error) +{ + bool success = !postponed_error.IsDefined(); + if (!success) { + error = std::move(postponed_error); + postponed_error.Clear(); + } + + return success; +} + +static bool +input_curl_check(InputStream *is, Error &error) +{ + CurlInputStream &c = *(CurlInputStream *)is; + return c.Check(error); +} + +inline Tag * +CurlInputStream::ReadTag() +{ + Tag *result = tag; + tag = nullptr; + return result; +} + +static Tag * +input_curl_tag(InputStream *is) +{ + CurlInputStream &c = *(CurlInputStream *)is; + return c.ReadTag(); +} + +inline bool +CurlInputStream::FillBuffer(Error &error) +{ + while (easy != nullptr && buffer.IsEmpty()) + base.cond.wait(base.mutex); + + if (postponed_error.IsDefined()) { + error = std::move(postponed_error); + postponed_error.Clear(); + return false; + } + + return !buffer.IsEmpty(); +} + +static size_t +read_from_buffer(IcyMetaDataParser &icy, CircularBuffer<uint8_t> &buffer, + void *dest0, size_t length) +{ + uint8_t *dest = (uint8_t *)dest0; + size_t nbytes = 0; + + while (true) { + auto r = buffer.Read(); + if (r.IsEmpty()) + break; + + if (r.size > length) + r.size = length; + + size_t chunk = icy.Data(r.size); + if (chunk > 0) { + memcpy(dest, r.data, chunk); + buffer.Consume(chunk); + + nbytes += chunk; + dest += chunk; + length -= chunk; + + if (length == 0) + break; + } + + r = buffer.Read(); + if (r.IsEmpty()) + break; + + chunk = icy.Meta(r.data, r.size); + if (chunk > 0) { + buffer.Consume(chunk); + if (length == 0) + break; + } + } + + return nbytes; +} + +inline void +CurlInputStream::CopyIcyTag() +{ + Tag *new_tag = icy.ReadTag(); + if (new_tag == nullptr) + return; + + delete tag; + + if (!meta_name.empty() && !new_tag->HasType(TAG_NAME)) { + TagBuilder tag_builder(std::move(*new_tag)); + tag_builder.AddItem(TAG_NAME, meta_name.c_str()); + *new_tag = tag_builder.Commit(); + } + + tag = new_tag; +} + +static bool +input_curl_available(InputStream *is) +{ + const CurlInputStream &c = *(const CurlInputStream *)is; + return c.IsAvailable(); +} + +inline size_t +CurlInputStream::Read(void *ptr, size_t size, Error &error) +{ + size_t nbytes; + + do { + /* fill the buffer */ + + if (!FillBuffer(error)) + return 0; + + nbytes = read_from_buffer(icy, buffer, ptr, size); + } while (nbytes == 0); + + if (icy.IsDefined()) + CopyIcyTag(); + + base.offset += (InputPlugin::offset_type)nbytes; + + if (paused && GetTotalBufferSize() < CURL_RESUME_AT) { + base.mutex.unlock(); + + BlockingCall(io_thread_get(), [this](){ + Resume(); + }); + + base.mutex.lock(); + } + + return nbytes; +} + +static size_t +input_curl_read(InputStream *is, void *ptr, size_t size, + Error &error) +{ + CurlInputStream &c = *(CurlInputStream *)is; + return c.Read(ptr, size, error); +} + +static void +input_curl_close(InputStream *is) +{ + CurlInputStream *c = (CurlInputStream *)is; + + delete c; +} + +static bool +input_curl_eof(gcc_unused InputStream *is) +{ + const CurlInputStream &c = *(const CurlInputStream *)is; + return c.IsEOF(); +} + +inline void +CurlInputStream::HeaderReceived(const char *name, std::string &&value) +{ + if (StringEqualsCaseASCII(name, "accept-ranges")) { + /* a stream with icy-metadata is not seekable */ + if (!icy.IsDefined()) + base.seekable = true; + } else if (StringEqualsCaseASCII(name, "content-length")) { + base.size = base.offset + ParseUint64(value.c_str()); + } else if (StringEqualsCaseASCII(name, "content-type")) { + base.mime = std::move(value); + } else if (StringEqualsCaseASCII(name, "icy-name") || + StringEqualsCaseASCII(name, "ice-name") || + StringEqualsCaseASCII(name, "x-audiocast-name")) { + meta_name = std::move(value); + + delete tag; + + TagBuilder tag_builder; + tag_builder.AddItem(TAG_NAME, meta_name.c_str()); + + tag = tag_builder.CommitNew(); + } else if (StringEqualsCaseASCII(name, "icy-metaint")) { + if (icy.IsDefined()) + return; + + size_t icy_metaint = ParseUint64(value.c_str()); + FormatDebug(curl_domain, "icy-metaint=%zu", icy_metaint); + + if (icy_metaint > 0) { + icy.Start(icy_metaint); + + /* a stream with icy-metadata is not + seekable */ + base.seekable = false; + } + } +} + +/** called by curl when new data is available */ +static size_t +input_curl_headerfunction(void *ptr, size_t size, size_t nmemb, void *stream) +{ + CurlInputStream &c = *(CurlInputStream *)stream; + + size *= nmemb; + + const char *header = (const char *)ptr; + const char *end = header + size; + + char name[64]; + + const char *value = (const char *)memchr(header, ':', size); + if (value == nullptr || (size_t)(value - header) >= sizeof(name)) + return size; + + memcpy(name, header, value - header); + name[value - header] = 0; + + /* skip the colon */ + + ++value; + + /* strip the value */ + + while (value < end && IsWhitespaceOrNull(*value)) + ++value; + + while (end > value && IsWhitespaceOrNull(end[-1])) + --end; + + c.HeaderReceived(name, std::string(value, end)); + return size; +} + +inline size_t +CurlInputStream::DataReceived(const void *ptr, size_t size) +{ + assert(size > 0); + + const ScopeLock protect(base.mutex); + + if (size > buffer.GetSpace()) { + paused = true; + return CURL_WRITEFUNC_PAUSE; + } + + auto w = buffer.Write(); + assert(!w.IsEmpty()); + + size_t nbytes = std::min(w.size, size); + memcpy(w.data, ptr, nbytes); + buffer.Append(nbytes); + + const size_t remaining = size - nbytes; + if (remaining > 0) { + w = buffer.Write(); + assert(!w.IsEmpty()); + assert(w.size >= remaining); + + memcpy(w.data, (const uint8_t *)ptr + nbytes, remaining); + buffer.Append(size); + } + + base.ready = true; + base.cond.broadcast(); + return size; +} + +/** called by curl when new data is available */ +static size_t +input_curl_writefunction(void *ptr, size_t size, size_t nmemb, void *stream) +{ + CurlInputStream &c = *(CurlInputStream *)stream; + + size *= nmemb; + if (size == 0) + return 0; + + return c.DataReceived(ptr, size); +} + +bool +CurlInputStream::InitEasy(Error &error) +{ + easy = curl_easy_init(); + if (easy == nullptr) { + error.Set(curl_domain, "curl_easy_init() failed"); + return false; + } + + curl_easy_setopt(easy, CURLOPT_PRIVATE, (void *)this); + curl_easy_setopt(easy, CURLOPT_USERAGENT, + "Music Player Daemon " VERSION); + curl_easy_setopt(easy, CURLOPT_HEADERFUNCTION, + input_curl_headerfunction); + curl_easy_setopt(easy, CURLOPT_WRITEHEADER, this); + curl_easy_setopt(easy, CURLOPT_WRITEFUNCTION, + input_curl_writefunction); + curl_easy_setopt(easy, CURLOPT_WRITEDATA, this); + curl_easy_setopt(easy, CURLOPT_HTTP200ALIASES, http_200_aliases); + curl_easy_setopt(easy, CURLOPT_FOLLOWLOCATION, 1); + curl_easy_setopt(easy, CURLOPT_NETRC, 1); + curl_easy_setopt(easy, CURLOPT_MAXREDIRS, 5); + curl_easy_setopt(easy, CURLOPT_FAILONERROR, true); + curl_easy_setopt(easy, CURLOPT_ERRORBUFFER, error_buffer); + curl_easy_setopt(easy, CURLOPT_NOPROGRESS, 1l); + curl_easy_setopt(easy, CURLOPT_NOSIGNAL, 1l); + curl_easy_setopt(easy, CURLOPT_CONNECTTIMEOUT, 10l); + + if (proxy != nullptr) + curl_easy_setopt(easy, CURLOPT_PROXY, proxy); + + if (proxy_port > 0) + curl_easy_setopt(easy, CURLOPT_PROXYPORT, (long)proxy_port); + + if (proxy_user != nullptr && proxy_password != nullptr) { + char proxy_auth_str[1024]; + snprintf(proxy_auth_str, sizeof(proxy_auth_str), + "%s:%s", + proxy_user, proxy_password); + curl_easy_setopt(easy, CURLOPT_PROXYUSERPWD, proxy_auth_str); + } + + CURLcode code = curl_easy_setopt(easy, CURLOPT_URL, base.uri.c_str()); + if (code != CURLE_OK) { + error.Format(curl_domain, code, + "curl_easy_setopt() failed: %s", + curl_easy_strerror(code)); + return false; + } + + request_headers = nullptr; + request_headers = curl_slist_append(request_headers, + "Icy-Metadata: 1"); + curl_easy_setopt(easy, CURLOPT_HTTPHEADER, request_headers); + + return true; +} + +inline bool +CurlInputStream::Seek(InputPlugin::offset_type offset, int whence, + Error &error) +{ + assert(base.ready); + + if (whence == SEEK_SET && offset == base.offset) + /* no-op */ + return true; + + if (!base.seekable) + return false; + + /* calculate the absolute offset */ + + switch (whence) { + case SEEK_SET: + break; + + case SEEK_CUR: + offset += base.offset; + break; + + case SEEK_END: + if (base.size < 0) + /* stream size is not known */ + return false; + + offset += base.size; + break; + + default: + return false; + } + + if (offset < 0) + return false; + + /* check if we can fast-forward the buffer */ + + while (offset > base.offset) { + auto r = buffer.Read(); + if (r.IsEmpty()) + break; + + const size_t nbytes = + offset - base.offset < (InputPlugin::offset_type)r.size + ? offset - base.offset + : r.size; + + buffer.Consume(nbytes); + base.offset += nbytes; + } + + if (offset == base.offset) + return true; + + /* close the old connection and open a new one */ + + base.mutex.unlock(); + + FreeEasyIndirect(); + buffer.Clear(); + + base.offset = offset; + if (base.offset == base.size) { + /* seek to EOF: simulate empty result; avoid + triggering a "416 Requested Range Not Satisfiable" + response */ + return true; + } + + if (!InitEasy(error)) + return false; + + /* send the "Range" header */ + + if (base.offset > 0) { + sprintf(range, "%lld-", (long long)base.offset); + curl_easy_setopt(easy, CURLOPT_RANGE, range); + } + + base.ready = false; + + if (!input_curl_easy_add_indirect(this, error)) + return false; + + base.mutex.lock(); + + while (!base.ready) + base.cond.wait(base.mutex); + + if (postponed_error.IsDefined()) { + error = std::move(postponed_error); + postponed_error.Clear(); + return false; + } + + return true; +} + +static bool +input_curl_seek(InputStream *is, InputPlugin::offset_type offset, + int whence, + Error &error) +{ + CurlInputStream &c = *(CurlInputStream *)is; + return c.Seek(offset, whence, error); +} + +inline InputStream * +CurlInputStream::Open(const char *url, Mutex &mutex, Cond &cond, + Error &error) +{ + void *buffer = HugeAllocate(CURL_MAX_BUFFERED); + if (buffer == nullptr) { + error.Set(curl_domain, "Out of memory"); + return nullptr; + } + + CurlInputStream *c = new CurlInputStream(url, mutex, cond, buffer); + + if (!c->InitEasy(error) || !input_curl_easy_add_indirect(c, error)) { + delete c; + return nullptr; + } + + return &c->base; +} + +static InputStream * +input_curl_open(const char *url, Mutex &mutex, Cond &cond, + Error &error) +{ + if (memcmp(url, "http://", 7) != 0 && + memcmp(url, "https://", 8) != 0) + return nullptr; + + return CurlInputStream::Open(url, mutex, cond, error); +} + +const struct InputPlugin input_plugin_curl = { + "curl", + input_curl_init, + input_curl_finish, + input_curl_open, + input_curl_close, + input_curl_check, + nullptr, + input_curl_tag, + input_curl_available, + input_curl_read, + input_curl_eof, + input_curl_seek, +}; diff --git a/src/input/plugins/CurlInputPlugin.hxx b/src/input/plugins/CurlInputPlugin.hxx new file mode 100644 index 000000000..4acb18bfc --- /dev/null +++ b/src/input/plugins/CurlInputPlugin.hxx @@ -0,0 +1,25 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_INPUT_CURL_HXX +#define MPD_INPUT_CURL_HXX + +extern const struct InputPlugin input_plugin_curl; + +#endif diff --git a/src/input/plugins/DespotifyInputPlugin.cxx b/src/input/plugins/DespotifyInputPlugin.cxx new file mode 100644 index 000000000..152fda95f --- /dev/null +++ b/src/input/plugins/DespotifyInputPlugin.cxx @@ -0,0 +1,262 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "DespotifyInputPlugin.hxx" +#include "lib/despotify/DespotifyUtils.hxx" +#include "../InputStream.hxx" +#include "../InputPlugin.hxx" +#include "tag/Tag.hxx" +#include "util/StringUtil.hxx" +#include "Log.hxx" + +extern "C" { +#include <despotify.h> +} + +#include <unistd.h> +#include <string.h> +#include <errno.h> + +#include <stdio.h> + +class DespotifyInputStream { + InputStream base; + + struct despotify_session *session; + struct ds_track *track; + Tag tag; + struct ds_pcm_data pcm; + size_t len_available; + bool eof; + + DespotifyInputStream(const char *uri, + Mutex &mutex, Cond &cond, + despotify_session *_session, + ds_track *_track) + :base(input_plugin_despotify, uri, mutex, cond), + session(_session), track(_track), + tag(mpd_despotify_tag_from_track(*track)), + len_available(0), eof(false) { + + memset(&pcm, 0, sizeof(pcm)); + + /* Despotify outputs pcm data */ + base.mime = "audio/x-mpd-cdda-pcm"; + base.ready = true; + } + +public: + ~DespotifyInputStream() { + despotify_free_track(track); + } + + static InputStream *Open(const char *url, Mutex &mutex, Cond &cond, + Error &error); + + bool IsEOF() const { + return eof; + } + + size_t Read(void *ptr, size_t size, Error &error); + + Tag *ReadTag() { + if (tag.IsEmpty()) + return nullptr; + + Tag *result = new Tag(std::move(tag)); + tag.Clear(); + return result; + } + + void Callback(int sig); + +private: + void FillBuffer(); +}; + +inline void +DespotifyInputStream::FillBuffer() +{ + /* Wait until there is data */ + while (1) { + int rc = despotify_get_pcm(session, &pcm); + + if (rc == 0 && pcm.len) { + len_available = pcm.len; + break; + } + + if (eof == true) + break; + + if (rc < 0) { + LogDebug(despotify_domain, "despotify_get_pcm error"); + eof = true; + break; + } + + /* Wait a while until next iteration */ + usleep(50 * 1000); + } +} + +inline void +DespotifyInputStream::Callback(int sig) +{ + switch (sig) { + case DESPOTIFY_NEW_TRACK: + break; + + case DESPOTIFY_TIME_TELL: + break; + + case DESPOTIFY_TRACK_PLAY_ERROR: + LogWarning(despotify_domain, "Track play error"); + eof = true; + len_available = 0; + break; + + case DESPOTIFY_END_OF_PLAYLIST: + eof = true; + LogDebug(despotify_domain, "End of playlist"); + break; + } +} + +static void callback(gcc_unused struct despotify_session* ds, + int sig, gcc_unused void* data, void* callback_data) +{ + DespotifyInputStream *ctx = (DespotifyInputStream *)callback_data; + + ctx->Callback(sig); +} + +inline InputStream * +DespotifyInputStream::Open(const char *url, + Mutex &mutex, Cond &cond, + gcc_unused Error &error) +{ + if (!StringStartsWith(url, "spt://")) + return nullptr; + + despotify_session *session = mpd_despotify_get_session(); + if (session == nullptr) + return nullptr; + + ds_link *ds_link = despotify_link_from_uri(url + 6); + if (!ds_link) { + FormatDebug(despotify_domain, "Can't find %s", url); + return nullptr; + } + if (ds_link->type != LINK_TYPE_TRACK) { + despotify_free_link(ds_link); + return nullptr; + } + + ds_track *track = despotify_link_get_track(session, ds_link); + despotify_free_link(ds_link); + if (!track) + return nullptr; + + DespotifyInputStream *ctx = + new DespotifyInputStream(url, mutex, cond, + session, track); + + if (!mpd_despotify_register_callback(callback, ctx)) { + delete ctx; + return nullptr; + } + + if (despotify_play(ctx->session, ctx->track, false) == false) { + mpd_despotify_unregister_callback(callback); + delete ctx; + return nullptr; + } + + return &ctx->base; +} + +static InputStream * +input_despotify_open(const char *url, Mutex &mutex, Cond &cond, Error &error) +{ + return DespotifyInputStream::Open(url, mutex, cond, error); +} + +inline size_t +DespotifyInputStream::Read(void *ptr, size_t size, gcc_unused Error &error) +{ + if (len_available == 0) + FillBuffer(); + + size_t to_cpy = std::min(size, len_available); + memcpy(ptr, pcm.buf, to_cpy); + len_available -= to_cpy; + + base.offset += to_cpy; + + return to_cpy; +} + +static size_t +input_despotify_read(InputStream *is, void *ptr, size_t size, Error &error) +{ + DespotifyInputStream *ctx = (DespotifyInputStream *)is; + return ctx->Read(ptr, size, error); +} + +static void +input_despotify_close(InputStream *is) +{ + DespotifyInputStream *ctx = (DespotifyInputStream *)is; + + mpd_despotify_unregister_callback(callback); + delete ctx; +} + +static bool +input_despotify_eof(InputStream *is) +{ + DespotifyInputStream *ctx = (DespotifyInputStream *)is; + + return ctx->IsEOF(); +} + +static Tag * +input_despotify_tag(InputStream *is) +{ + DespotifyInputStream *ctx = (DespotifyInputStream *)is; + + return ctx->ReadTag(); +} + +const InputPlugin input_plugin_despotify = { + "despotify", + nullptr, + nullptr, + input_despotify_open, + input_despotify_close, + nullptr, + nullptr, + input_despotify_tag, + nullptr, + input_despotify_read, + input_despotify_eof, + nullptr, +}; diff --git a/src/input/plugins/DespotifyInputPlugin.hxx b/src/input/plugins/DespotifyInputPlugin.hxx new file mode 100644 index 000000000..83f963520 --- /dev/null +++ b/src/input/plugins/DespotifyInputPlugin.hxx @@ -0,0 +1,25 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef INPUT_DESPOTIFY_HXX +#define INPUT_DESPOTIFY_HXX + +extern const struct InputPlugin input_plugin_despotify; + +#endif diff --git a/src/input/plugins/FfmpegInputPlugin.cxx b/src/input/plugins/FfmpegInputPlugin.cxx new file mode 100644 index 000000000..dab4b59fb --- /dev/null +++ b/src/input/plugins/FfmpegInputPlugin.cxx @@ -0,0 +1,177 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +/* necessary because libavutil/common.h uses UINT64_C */ +#define __STDC_CONSTANT_MACROS + +#include "config.h" +#include "FfmpegInputPlugin.hxx" +#include "../InputStream.hxx" +#include "../InputPlugin.hxx" +#include "util/StringUtil.hxx" +#include "util/Error.hxx" +#include "util/Domain.hxx" + +extern "C" { +#include <libavformat/avio.h> +#include <libavformat/avformat.h> +} + +struct FfmpegInputStream { + InputStream base; + + AVIOContext *h; + + bool eof; + + FfmpegInputStream(const char *uri, Mutex &mutex, Cond &cond, + AVIOContext *_h) + :base(input_plugin_ffmpeg, uri, mutex, cond), + h(_h), eof(false) { + base.ready = true; + base.seekable = (h->seekable & AVIO_SEEKABLE_NORMAL) != 0; + base.size = avio_size(h); + + /* hack to make MPD select the "ffmpeg" decoder plugin + - since avio.h doesn't tell us the MIME type of the + resource, we can't select a decoder plugin, but the + "ffmpeg" plugin is quite good at auto-detection */ + base.mime = "audio/x-mpd-ffmpeg"; + } + + ~FfmpegInputStream() { + avio_close(h); + } +}; + +static constexpr Domain ffmpeg_domain("ffmpeg"); + +static inline bool +input_ffmpeg_supported(void) +{ + void *opaque = nullptr; + return avio_enum_protocols(&opaque, 0) != nullptr; +} + +static InputPlugin::InitResult +input_ffmpeg_init(gcc_unused const config_param ¶m, + Error &error) +{ + av_register_all(); + + /* disable this plugin if there's no registered protocol */ + if (!input_ffmpeg_supported()) { + error.Set(ffmpeg_domain, "No protocol"); + return InputPlugin::InitResult::UNAVAILABLE; + } + + return InputPlugin::InitResult::SUCCESS; +} + +static InputStream * +input_ffmpeg_open(const char *uri, + Mutex &mutex, Cond &cond, + Error &error) +{ + if (!StringStartsWith(uri, "gopher://") && + !StringStartsWith(uri, "rtp://") && + !StringStartsWith(uri, "rtsp://") && + !StringStartsWith(uri, "rtmp://") && + !StringStartsWith(uri, "rtmpt://") && + !StringStartsWith(uri, "rtmps://")) + return nullptr; + + AVIOContext *h; + int ret = avio_open(&h, uri, AVIO_FLAG_READ); + if (ret != 0) { + error.Set(ffmpeg_domain, ret, + "libavformat failed to open the URI"); + return nullptr; + } + + auto *i = new FfmpegInputStream(uri, mutex, cond, h); + return &i->base; +} + +static size_t +input_ffmpeg_read(InputStream *is, void *ptr, size_t size, + Error &error) +{ + FfmpegInputStream *i = (FfmpegInputStream *)is; + + int ret = avio_read(i->h, (unsigned char *)ptr, size); + if (ret <= 0) { + if (ret < 0) + error.Set(ffmpeg_domain, "avio_read() failed"); + + i->eof = true; + return false; + } + + is->offset += ret; + return (size_t)ret; +} + +static void +input_ffmpeg_close(InputStream *is) +{ + FfmpegInputStream *i = (FfmpegInputStream *)is; + + delete i; +} + +static bool +input_ffmpeg_eof(InputStream *is) +{ + FfmpegInputStream *i = (FfmpegInputStream *)is; + + return i->eof; +} + +static bool +input_ffmpeg_seek(InputStream *is, InputPlugin::offset_type offset, + int whence, + Error &error) +{ + FfmpegInputStream *i = (FfmpegInputStream *)is; + int64_t ret = avio_seek(i->h, offset, whence); + + if (ret >= 0) { + i->eof = false; + return true; + } else { + error.Set(ffmpeg_domain, "avio_seek() failed"); + return false; + } +} + +const InputPlugin input_plugin_ffmpeg = { + "ffmpeg", + input_ffmpeg_init, + nullptr, + input_ffmpeg_open, + input_ffmpeg_close, + nullptr, + nullptr, + nullptr, + nullptr, + input_ffmpeg_read, + input_ffmpeg_eof, + input_ffmpeg_seek, +}; diff --git a/src/input/plugins/FfmpegInputPlugin.hxx b/src/input/plugins/FfmpegInputPlugin.hxx new file mode 100644 index 000000000..43f829e89 --- /dev/null +++ b/src/input/plugins/FfmpegInputPlugin.hxx @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_FFMPEG_INPUT_PLUGIN_HXX +#define MPD_FFMPEG_INPUT_PLUGIN_HXX + +/** + * An input plugin based on libavformat's "avio" library. + */ +extern const struct InputPlugin input_plugin_ffmpeg; + +#endif diff --git a/src/input/plugins/FileInputPlugin.cxx b/src/input/plugins/FileInputPlugin.cxx new file mode 100644 index 000000000..780e93263 --- /dev/null +++ b/src/input/plugins/FileInputPlugin.cxx @@ -0,0 +1,157 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" /* must be first for large file support */ +#include "FileInputPlugin.hxx" +#include "../InputStream.hxx" +#include "../InputPlugin.hxx" +#include "util/Error.hxx" +#include "util/Domain.hxx" +#include "fs/Traits.hxx" +#include "system/fd_util.h" +#include "open.h" + +#include <sys/stat.h> +#include <unistd.h> +#include <errno.h> + +static constexpr Domain file_domain("file"); + +struct FileInputStream { + InputStream base; + + int fd; + + FileInputStream(const char *path, int _fd, off_t size, + Mutex &mutex, Cond &cond) + :base(input_plugin_file, path, mutex, cond), + fd(_fd) { + base.size = size; + base.seekable = true; + base.ready = true; + } + + ~FileInputStream() { + close(fd); + } +}; + +static InputStream * +input_file_open(const char *filename, + Mutex &mutex, Cond &cond, + Error &error) +{ + int fd, ret; + struct stat st; + + if (!PathTraitsFS::IsAbsolute(filename)) + return nullptr; + + fd = open_cloexec(filename, O_RDONLY|O_BINARY, 0); + if (fd < 0) { + if (errno != ENOENT && errno != ENOTDIR) + error.FormatErrno("Failed to open \"%s\"", + filename); + return nullptr; + } + + ret = fstat(fd, &st); + if (ret < 0) { + error.FormatErrno("Failed to stat \"%s\"", filename); + close(fd); + return nullptr; + } + + if (!S_ISREG(st.st_mode)) { + error.Format(file_domain, "Not a regular file: %s", filename); + close(fd); + return nullptr; + } + +#ifdef POSIX_FADV_SEQUENTIAL + posix_fadvise(fd, (off_t)0, st.st_size, POSIX_FADV_SEQUENTIAL); +#endif + + FileInputStream *fis = new FileInputStream(filename, fd, st.st_size, + mutex, cond); + return &fis->base; +} + +static bool +input_file_seek(InputStream *is, InputPlugin::offset_type offset, + int whence, + Error &error) +{ + FileInputStream *fis = (FileInputStream *)is; + + offset = (InputPlugin::offset_type)lseek(fis->fd, (off_t)offset, whence); + if (offset < 0) { + error.SetErrno("Failed to seek"); + return false; + } + + is->offset = offset; + return true; +} + +static size_t +input_file_read(InputStream *is, void *ptr, size_t size, + Error &error) +{ + FileInputStream *fis = (FileInputStream *)is; + ssize_t nbytes; + + nbytes = read(fis->fd, ptr, size); + if (nbytes < 0) { + error.SetErrno("Failed to read"); + return 0; + } + + is->offset += nbytes; + return (size_t)nbytes; +} + +static void +input_file_close(InputStream *is) +{ + FileInputStream *fis = (FileInputStream *)is; + + delete fis; +} + +static bool +input_file_eof(InputStream *is) +{ + return is->offset >= is->size; +} + +const InputPlugin input_plugin_file = { + "file", + nullptr, + nullptr, + input_file_open, + input_file_close, + nullptr, + nullptr, + nullptr, + nullptr, + input_file_read, + input_file_eof, + input_file_seek, +}; diff --git a/src/input/plugins/FileInputPlugin.hxx b/src/input/plugins/FileInputPlugin.hxx new file mode 100644 index 000000000..4aef94637 --- /dev/null +++ b/src/input/plugins/FileInputPlugin.hxx @@ -0,0 +1,25 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_INPUT_FILE_HXX +#define MPD_INPUT_FILE_HXX + +extern const struct InputPlugin input_plugin_file; + +#endif diff --git a/src/input/plugins/MmsInputPlugin.cxx b/src/input/plugins/MmsInputPlugin.cxx new file mode 100644 index 000000000..845fe5d5d --- /dev/null +++ b/src/input/plugins/MmsInputPlugin.cxx @@ -0,0 +1,117 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "MmsInputPlugin.hxx" +#include "input/ThreadInputStream.hxx" +#include "input/InputPlugin.hxx" +#include "util/StringUtil.hxx" +#include "util/Error.hxx" +#include "util/Domain.hxx" + +#include <libmms/mmsx.h> + +static constexpr size_t MMS_BUFFER_SIZE = 256 * 1024; + +class MmsInputStream final : public ThreadInputStream { + mmsx_t *mms; + +public: + MmsInputStream(const char *uri, Mutex &mutex, Cond &cond) + :ThreadInputStream(input_plugin_mms, uri, mutex, cond, + MMS_BUFFER_SIZE) { + } + +protected: + virtual bool Open(gcc_unused Error &error) override; + virtual size_t Read(void *ptr, size_t size, Error &error) override; + + virtual void Close() { + mmsx_close(mms); + } +}; + +static constexpr Domain mms_domain("mms"); + +bool +MmsInputStream::Open(Error &error) +{ + Unlock(); + + mms = mmsx_connect(nullptr, nullptr, GetURI(), 128 * 1024); + if (mms == nullptr) { + Lock(); + error.Set(mms_domain, "mmsx_connect() failed"); + return false; + } + + Lock(); + + /* TODO: is this correct? at least this selects the ffmpeg + decoder, which seems to work fine */ + SetMimeType("audio/x-ms-wma"); + return true; +} + +static InputStream * +input_mms_open(const char *url, + Mutex &mutex, Cond &cond, + Error &error) +{ + if (!StringStartsWith(url, "mms://") && + !StringStartsWith(url, "mmsh://") && + !StringStartsWith(url, "mmst://") && + !StringStartsWith(url, "mmsu://")) + return nullptr; + + auto m = new MmsInputStream(url, mutex, cond); + auto is = m->Start(error); + if (is == nullptr) + delete m; + + return is; +} + +size_t +MmsInputStream::Read(void *ptr, size_t size, Error &error) +{ + int nbytes = mmsx_read(nullptr, mms, (char *)ptr, size); + if (nbytes <= 0) { + if (nbytes < 0) + error.SetErrno("mmsx_read() failed"); + return 0; + } + + return (size_t)nbytes; +} + +const InputPlugin input_plugin_mms = { + "mms", + nullptr, + nullptr, + input_mms_open, + ThreadInputStream::Close, + ThreadInputStream::Check, + nullptr, + nullptr, + ThreadInputStream::Available, + ThreadInputStream::Read, + ThreadInputStream::IsEOF, + nullptr, +}; diff --git a/src/input/plugins/MmsInputPlugin.hxx b/src/input/plugins/MmsInputPlugin.hxx new file mode 100644 index 000000000..b4017ffd6 --- /dev/null +++ b/src/input/plugins/MmsInputPlugin.hxx @@ -0,0 +1,25 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef INPUT_MMS_H +#define INPUT_MMS_H + +extern const struct InputPlugin input_plugin_mms; + +#endif diff --git a/src/input/plugins/NfsInputPlugin.cxx b/src/input/plugins/NfsInputPlugin.cxx new file mode 100644 index 000000000..c16698b1c --- /dev/null +++ b/src/input/plugins/NfsInputPlugin.cxx @@ -0,0 +1,200 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "NfsInputPlugin.hxx" +#include "../InputStream.hxx" +#include "../InputPlugin.hxx" +#include "lib/nfs/Domain.hxx" +#include "util/StringUtil.hxx" +#include "util/Error.hxx" + +extern "C" { +#include <nfsc/libnfs.h> +} + +#include <sys/stat.h> +#include <fcntl.h> + +class NfsInputStream { + InputStream base; + + nfs_context *ctx; + nfsfh *fh; + +public: + NfsInputStream(const char *uri, + Mutex &mutex, Cond &cond, + nfs_context *_ctx, nfsfh *_fh, + InputStream::offset_type size) + :base(input_plugin_nfs, uri, mutex, cond), + ctx(_ctx), fh(_fh) { + base.ready = true; + base.seekable = true; + base.size = size; + } + + ~NfsInputStream() { + nfs_close(ctx, fh); + nfs_destroy_context(ctx); + } + + InputStream *GetBase() { + return &base; + } + + bool IsEOF() const { + return base.offset >= base.size; + } + + size_t Read(void *ptr, size_t size, Error &error) { + int nbytes = nfs_read(ctx, fh, size, (char *)ptr); + if (nbytes < 0) { + error.SetErrno(-nbytes, "nfs_read() failed"); + nbytes = 0; + } + + return nbytes; + } + + bool Seek(InputStream::offset_type offset, int whence, Error &error) { + uint64_t current_offset; + int result = nfs_lseek(ctx, fh, offset, whence, ¤t_offset); + if (result < 0) { + error.SetErrno(-result, "smbc_lseek() failed"); + return false; + } + + base.offset = current_offset; + return true; + } +}; + +/* + * InputPlugin methods + * + */ + +static InputStream * +input_nfs_open(const char *uri, + Mutex &mutex, Cond &cond, + Error &error) +{ + if (!StringStartsWith(uri, "nfs://")) + return nullptr; + + uri += 6; + + const char *slash = strchr(uri, '/'); + if (slash == nullptr) { + error.Set(nfs_domain, "Malformed nfs:// URI"); + return nullptr; + } + + const std::string server(uri, slash); + + uri = slash; + slash = strrchr(uri + 1, '/'); + if (slash == nullptr || slash[1] == 0) { + error.Set(nfs_domain, "Malformed nfs:// URI"); + return nullptr; + } + + const std::string mount(uri, slash); + uri = slash; + + nfs_context *ctx = nfs_init_context(); + if (ctx == nullptr) { + error.Set(nfs_domain, "nfs_init_context() failed"); + return nullptr; + } + + int result = nfs_mount(ctx, server.c_str(), mount.c_str()); + if (result < 0) { + nfs_destroy_context(ctx); + error.SetErrno(-result, "nfs_mount() failed"); + return nullptr; + } + + nfsfh *fh; + result = nfs_open(ctx, uri, O_RDONLY, &fh); + if (result < 0) { + nfs_destroy_context(ctx); + error.SetErrno(-result, "nfs_open() failed"); + return nullptr; + } + + struct stat st; + result = nfs_fstat(ctx, fh, &st); + if (result < 0) { + nfs_close(ctx, fh); + nfs_destroy_context(ctx); + error.SetErrno(-result, "nfs_fstat() failed"); + return nullptr; + } + + auto is = new NfsInputStream(uri, mutex, cond, ctx, fh, st.st_size); + return is->GetBase(); +} + +static size_t +input_nfs_read(InputStream *is, void *ptr, size_t size, + Error &error) +{ + NfsInputStream &s = *(NfsInputStream *)is; + return s.Read(ptr, size, error); +} + +static void +input_nfs_close(InputStream *is) +{ + NfsInputStream *s = (NfsInputStream *)is; + delete s; +} + +static bool +input_nfs_eof(InputStream *is) +{ + NfsInputStream &s = *(NfsInputStream *)is; + return s.IsEOF(); +} + +static bool +input_nfs_seek(InputStream *is, + InputPlugin::offset_type offset, int whence, + Error &error) +{ + NfsInputStream &s = *(NfsInputStream *)is; + return s.Seek(offset, whence, error); +} + +const InputPlugin input_plugin_nfs = { + "nfs", + nullptr, + nullptr, + input_nfs_open, + input_nfs_close, + nullptr, + nullptr, + nullptr, + nullptr, + input_nfs_read, + input_nfs_eof, + input_nfs_seek, +}; diff --git a/src/input/plugins/NfsInputPlugin.hxx b/src/input/plugins/NfsInputPlugin.hxx new file mode 100644 index 000000000..d2cc87549 --- /dev/null +++ b/src/input/plugins/NfsInputPlugin.hxx @@ -0,0 +1,25 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_INPUT_NFS_H +#define MPD_INPUT_NFS_H + +extern const struct InputPlugin input_plugin_nfs; + +#endif diff --git a/src/input/plugins/RewindInputPlugin.cxx b/src/input/plugins/RewindInputPlugin.cxx new file mode 100644 index 000000000..1a930ac53 --- /dev/null +++ b/src/input/plugins/RewindInputPlugin.cxx @@ -0,0 +1,251 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "RewindInputPlugin.hxx" +#include "../InputStream.hxx" +#include "../InputPlugin.hxx" + +#include <assert.h> +#include <string.h> +#include <stdio.h> + +extern const InputPlugin rewind_input_plugin; + +struct RewindInputStream { + InputStream base; + + InputStream *input; + + /** + * The read position within the buffer. Undefined as long as + * ReadingFromBuffer() returns false. + */ + size_t head; + + /** + * The write/append position within the buffer. + */ + size_t tail; + + /** + * The size of this buffer is the maximum number of bytes + * which can be rewinded cheaply without passing the "seek" + * call to CURL. + * + * The origin of this buffer is always the beginning of the + * stream (offset 0). + */ + char buffer[64 * 1024]; + + RewindInputStream(InputStream *_input) + :base(rewind_input_plugin, _input->uri.c_str(), + _input->mutex, _input->cond), + input(_input), tail(0) { + } + + ~RewindInputStream() { + input->Close(); + } + + /** + * Are we currently reading from the buffer, and does the + * buffer contain more data for the next read operation? + */ + bool ReadingFromBuffer() const { + return tail > 0 && base.offset < input->offset; + } + + /** + * Copy public attributes from the underlying input stream to the + * "rewind" input stream. This function is called when a method of + * the underlying stream has returned, which may have modified these + * attributes. + */ + void CopyAttributes() { + InputStream *dest = &base; + const InputStream *src = input; + + assert(dest != src); + + bool dest_ready = dest->ready; + + dest->ready = src->ready; + dest->seekable = src->seekable; + dest->size = src->size; + dest->offset = src->offset; + + if (!dest_ready && src->ready) + dest->mime = src->mime; + } +}; + +static void +input_rewind_close(InputStream *is) +{ + RewindInputStream *r = (RewindInputStream *)is; + + delete r; +} + +static bool +input_rewind_check(InputStream *is, Error &error) +{ + RewindInputStream *r = (RewindInputStream *)is; + + return r->input->Check(error); +} + +static void +input_rewind_update(InputStream *is) +{ + RewindInputStream *r = (RewindInputStream *)is; + + if (!r->ReadingFromBuffer()) + r->CopyAttributes(); +} + +static Tag * +input_rewind_tag(InputStream *is) +{ + RewindInputStream *r = (RewindInputStream *)is; + + return r->input->ReadTag(); +} + +static bool +input_rewind_available(InputStream *is) +{ + RewindInputStream *r = (RewindInputStream *)is; + + return r->input->IsAvailable(); +} + +static size_t +input_rewind_read(InputStream *is, void *ptr, size_t size, + Error &error) +{ + RewindInputStream *r = (RewindInputStream *)is; + + if (r->ReadingFromBuffer()) { + /* buffered read */ + + assert(r->head == (size_t)is->offset); + assert(r->tail == (size_t)r->input->offset); + + if (size > r->tail - r->head) + size = r->tail - r->head; + + memcpy(ptr, r->buffer + r->head, size); + r->head += size; + is->offset += size; + + return size; + } else { + /* pass method call to underlying stream */ + + size_t nbytes = r->input->Read(ptr, size, error); + + if (r->input->offset > (InputPlugin::offset_type)sizeof(r->buffer)) + /* disable buffering */ + r->tail = 0; + else if (r->tail == (size_t)is->offset) { + /* append to buffer */ + + memcpy(r->buffer + r->tail, ptr, nbytes); + r->tail += nbytes; + + assert(r->tail == (size_t)r->input->offset); + } + + r->CopyAttributes(); + + return nbytes; + } +} + +static bool +input_rewind_eof(InputStream *is) +{ + RewindInputStream *r = (RewindInputStream *)is; + + return !r->ReadingFromBuffer() && r->input->IsEOF(); +} + +static bool +input_rewind_seek(InputStream *is, InputPlugin::offset_type offset, + int whence, + Error &error) +{ + RewindInputStream *r = (RewindInputStream *)is; + + assert(is->ready); + + if (whence == SEEK_SET && r->tail > 0 && + offset <= (InputPlugin::offset_type)r->tail) { + /* buffered seek */ + + assert(!r->ReadingFromBuffer() || + r->head == (size_t)is->offset); + assert(r->tail == (size_t)r->input->offset); + + r->head = (size_t)offset; + is->offset = offset; + + return true; + } else { + bool success = r->input->Seek(offset, whence, error); + r->CopyAttributes(); + + /* disable the buffer, because r->input has left the + buffered range now */ + r->tail = 0; + + return success; + } +} + +const InputPlugin rewind_input_plugin = { + nullptr, + nullptr, + nullptr, + nullptr, + input_rewind_close, + input_rewind_check, + input_rewind_update, + input_rewind_tag, + input_rewind_available, + input_rewind_read, + input_rewind_eof, + input_rewind_seek, +}; + +InputStream * +input_rewind_open(InputStream *is) +{ + assert(is != nullptr); + assert(is->offset == 0); + + if (is->seekable) + /* seekable resources don't need this plugin */ + return is; + + RewindInputStream *c = new RewindInputStream(is); + return &c->base; +} diff --git a/src/input/plugins/RewindInputPlugin.hxx b/src/input/plugins/RewindInputPlugin.hxx new file mode 100644 index 000000000..f19705154 --- /dev/null +++ b/src/input/plugins/RewindInputPlugin.hxx @@ -0,0 +1,37 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +/** \file + * + * A wrapper for an input_stream object which allows cheap buffered + * rewinding. This is useful while detecting the stream codec (let + * each decoder plugin peek a portion from the stream). + */ + +#ifndef MPD_INPUT_REWIND_HXX +#define MPD_INPUT_REWIND_HXX + +#include "check.h" + +struct InputStream; + +InputStream * +input_rewind_open(InputStream *is); + +#endif diff --git a/src/input/plugins/SmbclientInputPlugin.cxx b/src/input/plugins/SmbclientInputPlugin.cxx new file mode 100644 index 000000000..9709d089a --- /dev/null +++ b/src/input/plugins/SmbclientInputPlugin.cxx @@ -0,0 +1,195 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "SmbclientInputPlugin.hxx" +#include "lib/smbclient/Init.hxx" +#include "lib/smbclient/Mutex.hxx" +#include "../InputStream.hxx" +#include "../InputPlugin.hxx" +#include "util/StringUtil.hxx" +#include "util/Error.hxx" + +#include <libsmbclient.h> + +class SmbclientInputStream { + InputStream base; + + SMBCCTX *ctx; + int fd; + +public: + SmbclientInputStream(const char *uri, + Mutex &mutex, Cond &cond, + SMBCCTX *_ctx, int _fd, const struct stat &st) + :base(input_plugin_smbclient, uri, mutex, cond), + ctx(_ctx), fd(_fd) { + base.ready = true; + base.seekable = true; + base.size = st.st_size; + } + + ~SmbclientInputStream() { + smbclient_mutex.lock(); + smbc_close(fd); + smbc_free_context(ctx, 1); + smbclient_mutex.unlock(); + } + + InputStream *GetBase() { + return &base; + } + + bool IsEOF() const { + return base.offset >= base.size; + } + + size_t Read(void *ptr, size_t size, Error &error) { + smbclient_mutex.lock(); + ssize_t nbytes = smbc_read(fd, ptr, size); + smbclient_mutex.unlock(); + if (nbytes < 0) { + error.SetErrno("smbc_read() failed"); + nbytes = 0; + } + + return nbytes; + } + + bool Seek(InputStream::offset_type offset, int whence, Error &error) { + smbclient_mutex.lock(); + off_t result = smbc_lseek(fd, offset, whence); + smbclient_mutex.unlock(); + if (result < 0) { + error.SetErrno("smbc_lseek() failed"); + return false; + } + + base.offset = result; + return true; + } +}; + +/* + * InputPlugin methods + * + */ + +static InputPlugin::InitResult +input_smbclient_init(gcc_unused const config_param ¶m, Error &error) +{ + if (!SmbclientInit(error)) + return InputPlugin::InitResult::UNAVAILABLE; + + // TODO: create one global SMBCCTX here? + + // TODO: evaluate config_param, call smbc_setOption*() + + return InputPlugin::InitResult::SUCCESS; +} + +static InputStream * +input_smbclient_open(const char *uri, + Mutex &mutex, Cond &cond, + Error &error) +{ + if (!StringStartsWith(uri, "smb://")) + return nullptr; + + const ScopeLock protect(smbclient_mutex); + + SMBCCTX *ctx = smbc_new_context(); + if (ctx == nullptr) { + error.SetErrno("smbc_new_context() failed"); + return nullptr; + } + + SMBCCTX *ctx2 = smbc_init_context(ctx); + if (ctx2 == nullptr) { + error.SetErrno("smbc_init_context() failed"); + smbc_free_context(ctx, 1); + return nullptr; + } + + ctx = ctx2; + + int fd = smbc_open(uri, O_RDONLY, 0); + if (fd < 0) { + error.SetErrno("smbc_open() failed"); + smbc_free_context(ctx, 1); + return nullptr; + } + + struct stat st; + if (smbc_fstat(fd, &st) < 0) { + error.SetErrno("smbc_fstat() failed"); + smbc_close(fd); + smbc_free_context(ctx, 1); + return nullptr; + } + + auto s = new SmbclientInputStream(uri, mutex, cond, ctx, fd, st); + return s->GetBase(); +} + +static size_t +input_smbclient_read(InputStream *is, void *ptr, size_t size, + Error &error) +{ + SmbclientInputStream &s = *(SmbclientInputStream *)is; + return s.Read(ptr, size, error); +} + +static void +input_smbclient_close(InputStream *is) +{ + SmbclientInputStream *s = (SmbclientInputStream *)is; + delete s; +} + +static bool +input_smbclient_eof(InputStream *is) +{ + SmbclientInputStream &s = *(SmbclientInputStream *)is; + return s.IsEOF(); +} + +static bool +input_smbclient_seek(InputStream *is, + InputPlugin::offset_type offset, int whence, + Error &error) +{ + SmbclientInputStream &s = *(SmbclientInputStream *)is; + return s.Seek(offset, whence, error); +} + +const InputPlugin input_plugin_smbclient = { + "smbclient", + input_smbclient_init, + nullptr, + input_smbclient_open, + input_smbclient_close, + nullptr, + nullptr, + nullptr, + nullptr, + input_smbclient_read, + input_smbclient_eof, + input_smbclient_seek, +}; diff --git a/src/input/plugins/SmbclientInputPlugin.hxx b/src/input/plugins/SmbclientInputPlugin.hxx new file mode 100644 index 000000000..a0539d020 --- /dev/null +++ b/src/input/plugins/SmbclientInputPlugin.hxx @@ -0,0 +1,25 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_INPUT_SMBCLIENT_H +#define MPD_INPUT_SMBCLIENT_H + +extern const struct InputPlugin input_plugin_smbclient; + +#endif |