1 files changed, 375 insertions, 0 deletions
diff --git a/src/input/plugins/CdioParanoiaInputPlugin.cxx b/src/input/plugins/CdioParanoiaInputPlugin.cxx
new file mode 100644
index 000000000..f847b35c1
--- /dev/null
+++ b/src/input/plugins/CdioParanoiaInputPlugin.cxx
@@ -0,0 +1,375 @@
+/*
+ * 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>
+
+class CdioParanoiaInputStream final : public InputStream {
+	cdrom_drive_t *const drv;
+	CdIo_t *const cdio;
+	cdrom_paranoia_t *const para;
+
+	const lsn_t lsn_from, lsn_to;
+	int lsn_relofs;
+
+	char buffer[CDIO_CD_FRAMESIZE_RAW];
+	int buffer_lsn;
+
+ public:
+	CdioParanoiaInputStream(const char *_uri, Mutex &_mutex, Cond &_cond,
+				cdrom_drive_t *_drv, CdIo_t *_cdio,
+				bool reverse_endian,
+				lsn_t _lsn_from, lsn_t _lsn_to)
+		:InputStream(_uri, _mutex, _cond),
+		 drv(_drv), cdio(_cdio), para(cdio_paranoia_init(drv)),
+		 lsn_from(_lsn_from), lsn_to(_lsn_to),
+		 lsn_relofs(0),
+		 buffer_lsn(-1)
+	{
+		/* Set reading mode for full paranoia, but allow
+		   skipping sectors. */
+		paranoia_modeset(para,
+				 PARANOIA_MODE_FULL^PARANOIA_MODE_NEVERSKIP);
+
+		/* seek to beginning of the track */
+		cdio_paranoia_seek(para, lsn_from, SEEK_SET);
+
+		seekable = true;
+		size = (lsn_to - lsn_from + 1) * CDIO_CD_FRAMESIZE_RAW;
+
+		/* hack to make MPD select the "pcm" decoder plugin */
+		SetMimeType(reverse_endian
+			    ? "audio/x-mpd-cdda-pcm-reverse"
+			    : "audio/x-mpd-cdda-pcm");
+		SetReady();
+	}
+
+	~CdioParanoiaInputStream() {
+		cdio_paranoia_free(para);
+		cdio_cddap_close_no_free_cdio(drv);
+		cdio_destroy(cdio);
+	}
+
+	/* virtual methods from InputStream */
+	bool IsEOF() override;
+	size_t Read(void *ptr, size_t size, Error &error) override;
+	bool Seek(offset_type offset, Error &error) override;
+};
+
+static constexpr Domain cdio_domain("cdio");
+
+static bool default_reverse_endian;
+
+static InputPlugin::InitResult
+input_cdio_init(const config_param &param, 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;
+}
+
+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;
+
+	/* 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.");
+		return nullptr;
+	}
+
+	/* Found such a CD-ROM with a CD-DA loaded. Use the first drive in the list. */
+	const auto cdio = cdio_open(device.c_str(), DRIVER_UNKNOWN);
+	if (cdio == nullptr) {
+		error.Set(cdio_domain, "Failed to open CD drive");
+		return nullptr;
+	}
+
+	const auto drv = cdio_cddap_identify_cdio(cdio, 1, nullptr);
+	if (drv == nullptr) {
+		error.Set(cdio_domain, "Unable to identify audio CD disc.");
+		cdio_destroy(cdio);
+		return nullptr;
+	}
+
+	cdda_verbose_set(drv, CDDA_MESSAGE_FORGETIT, CDDA_MESSAGE_FORGETIT);
+
+	if (0 != cdio_cddap_open(drv)) {
+		cdio_cddap_close_no_free_cdio(drv);
+		cdio_destroy(cdio);
+		error.Set(cdio_domain, "Unable to open disc.");
+		return nullptr;
+	}
+
+	bool reverse_endian;
+	switch (data_bigendianp(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(drv));
+		cdio_cddap_close_no_free_cdio(drv);
+		cdio_destroy(cdio);
+		return nullptr;
+	}
+
+	lsn_t lsn_from, lsn_to;
+	if (parsed_uri.track >= 0) {
+		lsn_from = cdio_get_track_lsn(cdio, parsed_uri.track);
+		lsn_to = cdio_get_track_last_lsn(cdio, parsed_uri.track);
+	} else {
+		lsn_from = 0;
+		lsn_to = cdio_get_disc_last_lsn(cdio);
+	}
+
+	return new CdioParanoiaInputStream(uri, mutex, cond,
+					   drv, cdio, reverse_endian,
+					   lsn_from, lsn_to);
+}
+
+bool
+CdioParanoiaInputStream::Seek(offset_type new_offset, Error &error)
+{
+	if (new_offset > size) {
+		error.Format(cdio_domain, "Invalid offset to seek %ld (%ld)",
+			     (long int)new_offset, (long int)size);
+		return false;
+	}
+
+	/* simple case */
+	if (new_offset == offset)
+		return true;
+
+	/* calculate current LSN */
+	lsn_relofs = new_offset / CDIO_CD_FRAMESIZE_RAW;
+	offset = new_offset;
+
+	cdio_paranoia_seek(para, lsn_from + lsn_relofs, SEEK_SET);
+
+	return true;
+}
+
+size_t
+CdioParanoiaInputStream::Read(void *ptr, size_t length, Error &error)
+{
+	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 (lsn_from + lsn_relofs > lsn_to)
+			break;
+
+		//current sector was changed ?
+		if (lsn_relofs != buffer_lsn) {
+			rbuf = cdio_paranoia_read(para, nullptr);
+
+			s_err = cdda_errors(drv);
+			if (s_err) {
+				FormatError(cdio_domain,
+					    "paranoia_read: %s", s_err);
+				free(s_err);
+			}
+			s_mess = cdda_messages(drv);
+			if (s_mess) {
+				free(s_mess);
+			}
+			if (!rbuf) {
+				error.Set(cdio_domain,
+					  "paranoia read error. Stopping.");
+				return 0;
+			}
+			//store current buffer
+			memcpy(buffer, rbuf, CDIO_CD_FRAMESIZE_RAW);
+			buffer_lsn = lsn_relofs;
+		} else {
+			//use cached sector
+			rbuf = (int16_t *)buffer;
+		}
+
+		//correct offset
+		diff = offset - 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
+		offset += len;
+		lsn_relofs = offset / CDIO_CD_FRAMESIZE_RAW;
+		//update length
+		length -= len;
+	}
+
+	return nbytes;
+}
+
+bool
+CdioParanoiaInputStream::IsEOF()
+{
+	return lsn_from + lsn_relofs > lsn_to;
+}
+
+const InputPlugin input_plugin_cdio_paranoia = {
+	"cdio_paranoia",
+	input_cdio_init,
+	nullptr,
+	input_cdio_open,
+};