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Diffstat (limited to '')
-rw-r--r-- | src/decoder/SndfileDecoderPlugin.cxx | 273 |
1 files changed, 0 insertions, 273 deletions
diff --git a/src/decoder/SndfileDecoderPlugin.cxx b/src/decoder/SndfileDecoderPlugin.cxx deleted file mode 100644 index bcdf6d7ca..000000000 --- a/src/decoder/SndfileDecoderPlugin.cxx +++ /dev/null @@ -1,273 +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 "SndfileDecoderPlugin.hxx" -#include "DecoderAPI.hxx" -#include "InputStream.hxx" -#include "CheckAudioFormat.hxx" -#include "tag/TagHandler.hxx" -#include "util/Error.hxx" -#include "util/Domain.hxx" -#include "Log.hxx" - -#include <sndfile.h> - -static constexpr Domain sndfile_domain("sndfile"); - -struct SndfileInputStream { - Decoder *const decoder; - InputStream &is; - - size_t Read(void *buffer, size_t size) { - /* libsndfile chokes on partial reads; therefore - always force full reads */ - return decoder_read_full(decoder, is, buffer, size) - ? size - : 0; - } -}; - -static sf_count_t -sndfile_vio_get_filelen(void *user_data) -{ - SndfileInputStream &sis = *(SndfileInputStream *)user_data; - const InputStream &is = sis.is; - - return is.GetSize(); -} - -static sf_count_t -sndfile_vio_seek(sf_count_t offset, int whence, void *user_data) -{ - SndfileInputStream &sis = *(SndfileInputStream *)user_data; - InputStream &is = sis.is; - - Error error; - if (!is.LockSeek(offset, whence, error)) { - LogError(error, "Seek failed"); - return -1; - } - - return is.GetOffset(); -} - -static sf_count_t -sndfile_vio_read(void *ptr, sf_count_t count, void *user_data) -{ - SndfileInputStream &sis = *(SndfileInputStream *)user_data; - - return sis.Read(ptr, count); -} - -static sf_count_t -sndfile_vio_write(gcc_unused const void *ptr, - gcc_unused sf_count_t count, - gcc_unused void *user_data) -{ - /* no writing! */ - return -1; -} - -static sf_count_t -sndfile_vio_tell(void *user_data) -{ - SndfileInputStream &sis = *(SndfileInputStream *)user_data; - const InputStream &is = sis.is; - - return is.GetOffset(); -} - -/** - * This SF_VIRTUAL_IO implementation wraps MPD's #input_stream to a - * libsndfile stream. - */ -static SF_VIRTUAL_IO vio = { - sndfile_vio_get_filelen, - sndfile_vio_seek, - sndfile_vio_read, - sndfile_vio_write, - sndfile_vio_tell, -}; - -/** - * Converts a frame number to a timestamp (in seconds). - */ -static float -frame_to_time(sf_count_t frame, const AudioFormat *audio_format) -{ - return (float)frame / (float)audio_format->sample_rate; -} - -/** - * Converts a timestamp (in seconds) to a frame number. - */ -static sf_count_t -time_to_frame(float t, const AudioFormat *audio_format) -{ - return (sf_count_t)(t * audio_format->sample_rate); -} - -static void -sndfile_stream_decode(Decoder &decoder, InputStream &is) -{ - SNDFILE *sf; - SF_INFO info; - size_t frame_size; - sf_count_t read_frames, num_frames; - int buffer[4096]; - - info.format = 0; - - SndfileInputStream sis{&decoder, is}; - sf = sf_open_virtual(&vio, SFM_READ, &info, &sis); - if (sf == nullptr) { - LogWarning(sndfile_domain, "sf_open_virtual() failed"); - return; - } - - /* for now, always read 32 bit samples. Later, we could lower - MPD's CPU usage by reading 16 bit samples with - sf_readf_short() on low-quality source files. */ - Error error; - AudioFormat audio_format; - if (!audio_format_init_checked(audio_format, info.samplerate, - SampleFormat::S32, - info.channels, error)) { - LogError(error); - return; - } - - decoder_initialized(decoder, audio_format, info.seekable, - frame_to_time(info.frames, &audio_format)); - - frame_size = audio_format.GetFrameSize(); - read_frames = sizeof(buffer) / frame_size; - - DecoderCommand cmd; - do { - num_frames = sf_readf_int(sf, buffer, read_frames); - if (num_frames <= 0) - break; - - cmd = decoder_data(decoder, is, - buffer, num_frames * frame_size, - 0); - if (cmd == DecoderCommand::SEEK) { - sf_count_t c = - time_to_frame(decoder_seek_where(decoder), - &audio_format); - c = sf_seek(sf, c, SEEK_SET); - if (c < 0) - decoder_seek_error(decoder); - else - decoder_command_finished(decoder); - cmd = DecoderCommand::NONE; - } - } while (cmd == DecoderCommand::NONE); - - sf_close(sf); -} - -static bool -sndfile_scan_file(const char *path_fs, - const struct tag_handler *handler, void *handler_ctx) -{ - SNDFILE *sf; - SF_INFO info; - const char *p; - - info.format = 0; - - sf = sf_open(path_fs, SFM_READ, &info); - if (sf == nullptr) - return false; - - if (!audio_valid_sample_rate(info.samplerate)) { - sf_close(sf); - FormatWarning(sndfile_domain, - "Invalid sample rate in %s", path_fs); - return false; - } - - tag_handler_invoke_duration(handler, handler_ctx, - info.frames / info.samplerate); - - p = sf_get_string(sf, SF_STR_TITLE); - if (p != nullptr) - tag_handler_invoke_tag(handler, handler_ctx, - TAG_TITLE, p); - - p = sf_get_string(sf, SF_STR_ARTIST); - if (p != nullptr) - tag_handler_invoke_tag(handler, handler_ctx, - TAG_ARTIST, p); - - p = sf_get_string(sf, SF_STR_DATE); - if (p != nullptr) - tag_handler_invoke_tag(handler, handler_ctx, - TAG_DATE, p); - - sf_close(sf); - - return true; -} - -static const char *const sndfile_suffixes[] = { - "wav", "aiff", "aif", /* Microsoft / SGI / Apple */ - "au", "snd", /* Sun / DEC / NeXT */ - "paf", /* Paris Audio File */ - "iff", "svx", /* Commodore Amiga IFF / SVX */ - "sf", /* IRCAM */ - "voc", /* Creative */ - "w64", /* Soundforge */ - "pvf", /* Portable Voice Format */ - "xi", /* Fasttracker */ - "htk", /* HMM Tool Kit */ - "caf", /* Apple */ - "sd2", /* Sound Designer II */ - - /* libsndfile also supports FLAC and Ogg Vorbis, but only by - linking with libFLAC and libvorbis - we can do better, we - have native plugins for these libraries */ - - nullptr -}; - -static const char *const sndfile_mime_types[] = { - "audio/x-wav", - "audio/x-aiff", - - /* what are the MIME types of the other supported formats? */ - - nullptr -}; - -const struct DecoderPlugin sndfile_decoder_plugin = { - "sndfile", - nullptr, - nullptr, - sndfile_stream_decode, - nullptr, - sndfile_scan_file, - nullptr, - nullptr, - sndfile_suffixes, - sndfile_mime_types, -}; |