/* 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" #ifdef HAVE_FLAC #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.sampleRate + 0.5; if (flac_seek_absolute(flacDec, sampleToSeek)) { decoder_clear(decoder); data.time = ((float)sampleToSeek) / data.audio_format.sampleRate; 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 # define flac_plugin_init NULL #else /* FLAC_API_VERSION_CURRENT >= 7 */ /* some of this stuff is duplicated from oggflac_plugin.c */ extern struct decoder_plugin oggflacPlugin; 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 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 }; static int flac_plugin_init(void) { if (!FLAC_API_SUPPORTS_OGG_FLAC) { DEBUG("libFLAC does not support OggFLAC\n"); return 1; } DEBUG("libFLAC supports OggFLAC, initializing OggFLAC support\n"); assert(oggflacPlugin.name == NULL); oggflacPlugin.name = "oggflac"; oggflacPlugin.try_decode = oggflac_try_decode; oggflacPlugin.stream_decode = oggflac_decode; oggflacPlugin.tag_dup = oggflac_tag_dup; oggflacPlugin.stream_types = INPUT_PLUGIN_STREAM_URL | INPUT_PLUGIN_STREAM_FILE; oggflacPlugin.suffixes = oggflac_suffixes; oggflacPlugin.mime_types = oggflac_mime_types; decoder_plugin_register(&oggflacPlugin); return 1; } #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", .init = flac_plugin_init, .stream_decode = flac_decode, .tag_dup = flacTagDup, .stream_types = INPUT_PLUGIN_STREAM_URL | INPUT_PLUGIN_STREAM_FILE, .suffixes = flacSuffixes, .mime_types = flac_mime_types }; #else /* !HAVE_FLAC */ struct decoder_plugin flacPlugin; #endif /* HAVE_FLAC */