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-rw-r--r--src/decoder/flac_plugin.c459
1 files changed, 459 insertions, 0 deletions
diff --git a/src/decoder/flac_plugin.c b/src/decoder/flac_plugin.c
new file mode 100644
index 000000000..7b9fce27d
--- /dev/null
+++ b/src/decoder/flac_plugin.c
@@ -0,0 +1,459 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
+ * This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "_flac_common.h"
+#include "../utils.h"
+#include "../log.h"
+
+#include <assert.h>
+
+/* this code was based on flac123, from flac-tools */
+
+static flac_read_status flacRead(mpd_unused const flac_decoder * flacDec,
+ FLAC__byte buf[],
+ flac_read_status_size_t *bytes,
+ void *fdata)
+{
+ FlacData *data = (FlacData *) fdata;
+ size_t r;
+
+ r = decoder_read(data->decoder, data->inStream, (void *)buf, *bytes);
+ *bytes = r;
+
+ if (r == 0) {
+ if (decoder_get_command(data->decoder) != DECODE_COMMAND_NONE ||
+ inputStreamAtEOF(data->inStream))
+ return flac_read_status_eof;
+ else
+ return flac_read_status_abort;
+ }
+
+ return flac_read_status_continue;
+}
+
+static flac_seek_status flacSeek(mpd_unused const flac_decoder * flacDec,
+ FLAC__uint64 offset,
+ void *fdata)
+{
+ FlacData *data = (FlacData *) fdata;
+
+ if (seekInputStream(data->inStream, offset, SEEK_SET) < 0) {
+ return flac_seek_status_error;
+ }
+
+ return flac_seek_status_ok;
+}
+
+static flac_tell_status flacTell(mpd_unused const flac_decoder * flacDec,
+ FLAC__uint64 * offset,
+ void *fdata)
+{
+ FlacData *data = (FlacData *) fdata;
+
+ *offset = (long)(data->inStream->offset);
+
+ return flac_tell_status_ok;
+}
+
+static flac_length_status flacLength(mpd_unused const flac_decoder * flacDec,
+ FLAC__uint64 * length,
+ void *fdata)
+{
+ FlacData *data = (FlacData *) fdata;
+
+ *length = (size_t) (data->inStream->size);
+
+ return flac_length_status_ok;
+}
+
+static FLAC__bool flacEOF(mpd_unused const flac_decoder * flacDec, void *fdata)
+{
+ FlacData *data = (FlacData *) fdata;
+
+ return (decoder_get_command(data->decoder) != DECODE_COMMAND_NONE &&
+ decoder_get_command(data->decoder) != DECODE_COMMAND_SEEK) ||
+ inputStreamAtEOF(data->inStream);
+}
+
+static void flacError(mpd_unused const flac_decoder *dec,
+ FLAC__StreamDecoderErrorStatus status, void *fdata)
+{
+ flac_error_common_cb("flac", status, (FlacData *) fdata);
+}
+
+#if !defined(FLAC_API_VERSION_CURRENT) || FLAC_API_VERSION_CURRENT <= 7
+static void flacPrintErroredState(FLAC__SeekableStreamDecoderState state)
+{
+ const char *str = ""; /* "" to silence compiler warning */
+ switch (state) {
+ case FLAC__SEEKABLE_STREAM_DECODER_OK:
+ case FLAC__SEEKABLE_STREAM_DECODER_SEEKING:
+ case FLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM:
+ return;
+ case FLAC__SEEKABLE_STREAM_DECODER_MEMORY_ALLOCATION_ERROR:
+ str = "allocation error";
+ break;
+ case FLAC__SEEKABLE_STREAM_DECODER_READ_ERROR:
+ str = "read error";
+ break;
+ case FLAC__SEEKABLE_STREAM_DECODER_SEEK_ERROR:
+ str = "seek error";
+ break;
+ case FLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR:
+ str = "seekable stream error";
+ break;
+ case FLAC__SEEKABLE_STREAM_DECODER_ALREADY_INITIALIZED:
+ str = "decoder already initialized";
+ break;
+ case FLAC__SEEKABLE_STREAM_DECODER_INVALID_CALLBACK:
+ str = "invalid callback";
+ break;
+ case FLAC__SEEKABLE_STREAM_DECODER_UNINITIALIZED:
+ str = "decoder uninitialized";
+ }
+ ERROR("flac %s\n", str);
+}
+
+static int flac_init(FLAC__SeekableStreamDecoder *dec,
+ FLAC__SeekableStreamDecoderReadCallback read_cb,
+ FLAC__SeekableStreamDecoderSeekCallback seek_cb,
+ FLAC__SeekableStreamDecoderTellCallback tell_cb,
+ FLAC__SeekableStreamDecoderLengthCallback length_cb,
+ FLAC__SeekableStreamDecoderEofCallback eof_cb,
+ FLAC__SeekableStreamDecoderWriteCallback write_cb,
+ FLAC__SeekableStreamDecoderMetadataCallback metadata_cb,
+ FLAC__SeekableStreamDecoderErrorCallback error_cb,
+ void *data)
+{
+ int s = 1;
+ s &= FLAC__seekable_stream_decoder_set_read_callback(dec, read_cb);
+ s &= FLAC__seekable_stream_decoder_set_seek_callback(dec, seek_cb);
+ s &= FLAC__seekable_stream_decoder_set_tell_callback(dec, tell_cb);
+ s &= FLAC__seekable_stream_decoder_set_length_callback(dec, length_cb);
+ s &= FLAC__seekable_stream_decoder_set_eof_callback(dec, eof_cb);
+ s &= FLAC__seekable_stream_decoder_set_write_callback(dec, write_cb);
+ s &= FLAC__seekable_stream_decoder_set_metadata_callback(dec,
+ metadata_cb);
+ s &= FLAC__seekable_stream_decoder_set_metadata_respond(dec,
+ FLAC__METADATA_TYPE_VORBIS_COMMENT);
+ s &= FLAC__seekable_stream_decoder_set_error_callback(dec, error_cb);
+ s &= FLAC__seekable_stream_decoder_set_client_data(dec, data);
+ if (!s || (FLAC__seekable_stream_decoder_init(dec) !=
+ FLAC__SEEKABLE_STREAM_DECODER_OK))
+ return 0;
+ return 1;
+}
+#else /* FLAC_API_VERSION_CURRENT >= 7 */
+static void flacPrintErroredState(FLAC__StreamDecoderState state)
+{
+ const char *str = ""; /* "" to silence compiler warning */
+ switch (state) {
+ case FLAC__STREAM_DECODER_SEARCH_FOR_METADATA:
+ case FLAC__STREAM_DECODER_READ_METADATA:
+ case FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC:
+ case FLAC__STREAM_DECODER_READ_FRAME:
+ case FLAC__STREAM_DECODER_END_OF_STREAM:
+ return;
+ case FLAC__STREAM_DECODER_OGG_ERROR:
+ str = "error in the Ogg layer";
+ break;
+ case FLAC__STREAM_DECODER_SEEK_ERROR:
+ str = "seek error";
+ break;
+ case FLAC__STREAM_DECODER_ABORTED:
+ str = "decoder aborted by read";
+ break;
+ case FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR:
+ str = "allocation error";
+ break;
+ case FLAC__STREAM_DECODER_UNINITIALIZED:
+ str = "decoder uninitialized";
+ }
+ ERROR("flac %s\n", str);
+}
+#endif /* FLAC_API_VERSION_CURRENT >= 7 */
+
+static void flacMetadata(mpd_unused const flac_decoder * dec,
+ const FLAC__StreamMetadata * block, void *vdata)
+{
+ flac_metadata_common_cb(block, (FlacData *) vdata);
+}
+
+static FLAC__StreamDecoderWriteStatus flacWrite(const flac_decoder *dec,
+ const FLAC__Frame * frame,
+ const FLAC__int32 * const buf[],
+ void *vdata)
+{
+ FLAC__uint32 samples = frame->header.blocksize;
+ FlacData *data = (FlacData *) vdata;
+ float timeChange;
+ FLAC__uint64 newPosition = 0;
+
+ timeChange = ((float)samples) / frame->header.sample_rate;
+ data->time += timeChange;
+
+ flac_get_decode_position(dec, &newPosition);
+ if (data->position && newPosition >= data->position) {
+ assert(timeChange >= 0);
+
+ data->bitRate =
+ ((newPosition - data->position) * 8.0 / timeChange)
+ / 1000 + 0.5;
+ }
+ data->position = newPosition;
+
+ return flac_common_write(data, frame, buf);
+}
+
+static struct tag *flacMetadataDup(char *file, int *vorbisCommentFound)
+{
+ struct tag *ret = NULL;
+ FLAC__Metadata_SimpleIterator *it;
+ FLAC__StreamMetadata *block = NULL;
+
+ *vorbisCommentFound = 0;
+
+ it = FLAC__metadata_simple_iterator_new();
+ if (!FLAC__metadata_simple_iterator_init(it, file, 1, 0)) {
+ const char *err;
+ FLAC_API FLAC__Metadata_SimpleIteratorStatus s;
+
+ s = FLAC__metadata_simple_iterator_status(it);
+
+ switch (s) { /* slightly more human-friendly messages: */
+ case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT:
+ err = "illegal input";
+ break;
+ case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ERROR_OPENING_FILE:
+ err = "error opening file";
+ break;
+ case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_A_FLAC_FILE:
+ err = "not a FLAC file";
+ break;
+ default:
+ err = FLAC__Metadata_SimpleIteratorStatusString[s];
+ }
+ DEBUG("flacMetadataDup: Reading '%s' "
+ "metadata gave the following error: %s\n",
+ file, err);
+ FLAC__metadata_simple_iterator_delete(it);
+ return ret;
+ }
+
+ do {
+ block = FLAC__metadata_simple_iterator_get_block(it);
+ if (!block)
+ break;
+ if (block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
+ ret = copyVorbisCommentBlockToMpdTag(block, ret);
+
+ if (ret)
+ *vorbisCommentFound = 1;
+ } else if (block->type == FLAC__METADATA_TYPE_STREAMINFO) {
+ if (!ret)
+ ret = tag_new();
+ ret->time = ((float)block->data.stream_info.
+ total_samples) /
+ block->data.stream_info.sample_rate + 0.5;
+ }
+ FLAC__metadata_object_delete(block);
+ } while (FLAC__metadata_simple_iterator_next(it));
+
+ FLAC__metadata_simple_iterator_delete(it);
+ return ret;
+}
+
+static struct tag *flacTagDup(char *file)
+{
+ struct tag *ret = NULL;
+ int foundVorbisComment = 0;
+
+ ret = flacMetadataDup(file, &foundVorbisComment);
+ if (!ret) {
+ DEBUG("flacTagDup: Failed to grab information from: %s\n",
+ file);
+ return NULL;
+ }
+ if (!foundVorbisComment) {
+ struct tag *temp = tag_id3_load(file);
+ if (temp) {
+ temp->time = ret->time;
+ tag_free(ret);
+ ret = temp;
+ }
+ }
+
+ return ret;
+}
+
+static int flac_decode_internal(struct decoder * decoder,
+ InputStream * inStream, int is_ogg)
+{
+ flac_decoder *flacDec;
+ FlacData data;
+ const char *err = NULL;
+
+ if (!(flacDec = flac_new()))
+ return -1;
+ init_FlacData(&data, decoder, inStream);
+
+#if defined(FLAC_API_VERSION_CURRENT) && FLAC_API_VERSION_CURRENT > 7
+ if(!FLAC__stream_decoder_set_metadata_respond(flacDec, FLAC__METADATA_TYPE_VORBIS_COMMENT))
+ {
+ DEBUG(__FILE__": Failed to set metadata respond\n");
+ }
+#endif
+
+
+ if (is_ogg) {
+ if (!flac_ogg_init(flacDec, flacRead, flacSeek, flacTell,
+ flacLength, flacEOF, flacWrite, flacMetadata,
+ flacError, (void *)&data)) {
+ err = "doing Ogg init()";
+ goto fail;
+ }
+ } else {
+ if (!flac_init(flacDec, flacRead, flacSeek, flacTell,
+ flacLength, flacEOF, flacWrite, flacMetadata,
+ flacError, (void *)&data)) {
+ err = "doing init()";
+ goto fail;
+ }
+ if (!flac_process_metadata(flacDec)) {
+ err = "problem reading metadata";
+ goto fail;
+ }
+ }
+
+ decoder_initialized(decoder, &data.audio_format, data.total_time);
+
+ while (1) {
+ if (!flac_process_single(flacDec))
+ break;
+ if (decoder_get_command(decoder) == DECODE_COMMAND_SEEK) {
+ FLAC__uint64 sampleToSeek = decoder_seek_where(decoder) *
+ data.audio_format.sample_rate + 0.5;
+ if (flac_seek_absolute(flacDec, sampleToSeek)) {
+ decoder_clear(decoder);
+ data.time = ((float)sampleToSeek) /
+ data.audio_format.sample_rate;
+ data.position = 0;
+ decoder_command_finished(decoder);
+ } else
+ decoder_seek_error(decoder);
+ } else if (flac_get_state(flacDec) == flac_decoder_eof)
+ break;
+ }
+ if (decoder_get_command(decoder) != DECODE_COMMAND_STOP) {
+ flacPrintErroredState(flac_get_state(flacDec));
+ flac_finish(flacDec);
+ }
+
+fail:
+ if (data.replayGainInfo)
+ freeReplayGainInfo(data.replayGainInfo);
+
+ if (flacDec)
+ flac_delete(flacDec);
+
+ if (err) {
+ ERROR("flac %s\n", err);
+ return -1;
+ }
+ return 0;
+}
+
+static int flac_decode(struct decoder * decoder, InputStream * inStream)
+{
+ return flac_decode_internal(decoder, inStream, 0);
+}
+
+#if defined(FLAC_API_VERSION_CURRENT) && FLAC_API_VERSION_CURRENT > 7 && \
+ !defined(HAVE_OGGFLAC)
+static struct tag *oggflac_tag_dup(char *file)
+{
+ struct tag *ret = NULL;
+ FLAC__Metadata_Iterator *it;
+ FLAC__StreamMetadata *block;
+ FLAC__Metadata_Chain *chain = FLAC__metadata_chain_new();
+
+ if (!(FLAC__metadata_chain_read_ogg(chain, file)))
+ goto out;
+ it = FLAC__metadata_iterator_new();
+ FLAC__metadata_iterator_init(it, chain);
+ do {
+ if (!(block = FLAC__metadata_iterator_get_block(it)))
+ break;
+ if (block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
+ ret = copyVorbisCommentBlockToMpdTag(block, ret);
+ } else if (block->type == FLAC__METADATA_TYPE_STREAMINFO) {
+ if (!ret)
+ ret = tag_new();
+ ret->time = ((float)block->data.stream_info.
+ total_samples) /
+ block->data.stream_info.sample_rate + 0.5;
+ }
+ } while (FLAC__metadata_iterator_next(it));
+ FLAC__metadata_iterator_delete(it);
+out:
+ FLAC__metadata_chain_delete(chain);
+ return ret;
+}
+
+static int oggflac_decode(struct decoder *decoder, InputStream * inStream)
+{
+ return flac_decode_internal(decoder, inStream, 1);
+}
+
+static bool oggflac_try_decode(InputStream * inStream)
+{
+ return FLAC_API_SUPPORTS_OGG_FLAC &&
+ ogg_stream_type_detect(inStream) == FLAC;
+}
+
+static const char *oggflac_suffixes[] = { "ogg", "oga", NULL };
+static const char *oggflac_mime_types[] = { "audio/x-flac+ogg",
+ "application/ogg",
+ "application/x-ogg",
+ NULL };
+
+struct decoder_plugin oggflacPlugin = {
+ .name = "oggflac",
+ .try_decode = oggflac_try_decode,
+ .stream_decode = oggflac_decode,
+ .tag_dup = oggflac_tag_dup,
+ .stream_types = INPUT_PLUGIN_STREAM_URL | INPUT_PLUGIN_STREAM_FILE,
+ .suffixes = oggflac_suffixes,
+ .mime_types = oggflac_mime_types
+};
+
+#endif /* FLAC_API_VERSION_CURRENT >= 7 */
+
+static const char *flacSuffixes[] = { "flac", NULL };
+static const char *flac_mime_types[] = { "audio/x-flac",
+ "application/x-flac",
+ NULL };
+
+struct decoder_plugin flacPlugin = {
+ .name = "flac",
+ .stream_decode = flac_decode,
+ .tag_dup = flacTagDup,
+ .stream_types = INPUT_PLUGIN_STREAM_URL | INPUT_PLUGIN_STREAM_FILE,
+ .suffixes = flacSuffixes,
+ .mime_types = flac_mime_types
+};