/* 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 * * OggFLAC support (half-stolen from flac_plugin.c :)) * (c) 2005 by Eric Wong <normalperson@yhbt.net> * * 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_OGGFLAC #include "_ogg_common.h" #include "../utils.h" #include "../log.h" static void oggflac_cleanup(FlacData * data, OggFLAC__SeekableStreamDecoder * decoder) { if (data->replayGainInfo) freeReplayGainInfo(data->replayGainInfo); if (decoder) OggFLAC__seekable_stream_decoder_delete(decoder); } static OggFLAC__SeekableStreamDecoderReadStatus of_read_cb(const OggFLAC__SeekableStreamDecoder * decoder, FLAC__byte buf[], unsigned *bytes, void *fdata) { FlacData *data = (FlacData *) fdata; size_t r; while (1) { r = readFromInputStream(data->inStream, (void *)buf, 1, *bytes); if (r == 0 && !inputStreamAtEOF(data->inStream) && decoder_get_command(data->decoder) != DECODE_COMMAND_STOP) my_usleep(10000); else break; } *bytes = r; if (r == 0 && !inputStreamAtEOF(data->inStream) && decoder_get_command(data->decoder) != DECODE_COMMAND_STOP) return OggFLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_ERROR; return OggFLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_OK; } static OggFLAC__SeekableStreamDecoderSeekStatus of_seek_cb(const OggFLAC__SeekableStreamDecoder * decoder, FLAC__uint64 offset, void *fdata) { FlacData *data = (FlacData *) fdata; if (seekInputStream(data->inStream, offset, SEEK_SET) < 0) { return OggFLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_ERROR; } return OggFLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_OK; } static OggFLAC__SeekableStreamDecoderTellStatus of_tell_cb(const OggFLAC__SeekableStreamDecoder * decoder, FLAC__uint64 * offset, void *fdata) { FlacData *data = (FlacData *) fdata; *offset = (long)(data->inStream->offset); return OggFLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_OK; } static OggFLAC__SeekableStreamDecoderLengthStatus of_length_cb(const OggFLAC__SeekableStreamDecoder * decoder, FLAC__uint64 * length, void *fdata) { FlacData *data = (FlacData *) fdata; *length = (size_t) (data->inStream->size); return OggFLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_OK; } static FLAC__bool of_EOF_cb(const OggFLAC__SeekableStreamDecoder * decoder, void *fdata) { FlacData *data = (FlacData *) fdata; if (inputStreamAtEOF(data->inStream) == 1) return true; return false; } static void of_error_cb(const OggFLAC__SeekableStreamDecoder * decoder, FLAC__StreamDecoderErrorStatus status, void *fdata) { flac_error_common_cb("oggflac", status, (FlacData *) fdata); } static void oggflacPrintErroredState(OggFLAC__SeekableStreamDecoderState state) { switch (state) { case OggFLAC__SEEKABLE_STREAM_DECODER_MEMORY_ALLOCATION_ERROR: ERROR("oggflac allocation error\n"); break; case OggFLAC__SEEKABLE_STREAM_DECODER_READ_ERROR: ERROR("oggflac read error\n"); break; case OggFLAC__SEEKABLE_STREAM_DECODER_SEEK_ERROR: ERROR("oggflac seek error\n"); break; case OggFLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR: ERROR("oggflac seekable stream error\n"); break; case OggFLAC__SEEKABLE_STREAM_DECODER_ALREADY_INITIALIZED: ERROR("oggflac decoder already initialized\n"); break; case OggFLAC__SEEKABLE_STREAM_DECODER_INVALID_CALLBACK: ERROR("invalid oggflac callback\n"); break; case OggFLAC__SEEKABLE_STREAM_DECODER_UNINITIALIZED: ERROR("oggflac decoder uninitialized\n"); break; case OggFLAC__SEEKABLE_STREAM_DECODER_OK: case OggFLAC__SEEKABLE_STREAM_DECODER_SEEKING: case OggFLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM: break; } } static FLAC__StreamDecoderWriteStatus oggflacWrite(const OggFLAC__SeekableStreamDecoder * decoder, const FLAC__Frame * frame, const FLAC__int32 * const buf[], void *vdata) { FlacData *data = (FlacData *) vdata; FLAC__uint32 samples = frame->header.blocksize; FLAC__uint16 u16; unsigned char *uc; unsigned int c_samp, c_chan; int i; float timeChange; timeChange = ((float)samples) / frame->header.sample_rate; data->time += timeChange; /* ogg123 uses a complicated method of calculating bitrate * with averaging which I'm not too fond of. * (waste of memory/CPU cycles, especially given this is _lossless_) * a get_decode_position() is not available in OggFLAC, either * * this does not give an accurate bitrate: * (bytes_last_read was set in the read callback) data->bitRate = ((8.0 * data->bytes_last_read * frame->header.sample_rate) /((float)samples * 1000)) + 0.5; */ for (c_samp = 0; c_samp < frame->header.blocksize; c_samp++) { for (c_chan = 0; c_chan < frame->header.channels; c_chan++) { u16 = buf[c_chan][c_samp]; uc = (unsigned char *)&u16; for (i = 0; i < (data->audio_format.bits / 8); i++) { if (data->chunk_length >= FLAC_CHUNK_SIZE) { if (flacSendChunk(data) < 0) { return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; } data->chunk_length = 0; if (decoder_get_command(data->decoder) == DECODE_COMMAND_SEEK) { return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; } } data->chunk[data->chunk_length++] = *(uc++); } } } return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; } /* used by TagDup */ static void of_metadata_dup_cb(const OggFLAC__SeekableStreamDecoder * decoder, const FLAC__StreamMetadata * block, void *vdata) { FlacData *data = (FlacData *) vdata; switch (block->type) { case FLAC__METADATA_TYPE_STREAMINFO: if (!data->tag) data->tag = newMpdTag(); data->tag->time = ((float)block->data.stream_info. total_samples) / block->data.stream_info.sample_rate + 0.5; return; case FLAC__METADATA_TYPE_VORBIS_COMMENT: copyVorbisCommentBlockToMpdTag(block, data->tag); default: break; } } /* used by decode */ static void of_metadata_decode_cb(const OggFLAC__SeekableStreamDecoder * dec, const FLAC__StreamMetadata * block, void *vdata) { flac_metadata_common_cb(block, (FlacData *) vdata); } static OggFLAC__SeekableStreamDecoder * full_decoder_init_and_read_metadata(FlacData * data, unsigned int metadata_only) { OggFLAC__SeekableStreamDecoder *decoder = NULL; unsigned int s = 1; if (!(decoder = OggFLAC__seekable_stream_decoder_new())) return NULL; if (metadata_only) { s &= OggFLAC__seekable_stream_decoder_set_metadata_callback (decoder, of_metadata_dup_cb); s &= OggFLAC__seekable_stream_decoder_set_metadata_respond (decoder, FLAC__METADATA_TYPE_STREAMINFO); } else { s &= OggFLAC__seekable_stream_decoder_set_metadata_callback (decoder, of_metadata_decode_cb); } s &= OggFLAC__seekable_stream_decoder_set_read_callback(decoder, of_read_cb); s &= OggFLAC__seekable_stream_decoder_set_seek_callback(decoder, of_seek_cb); s &= OggFLAC__seekable_stream_decoder_set_tell_callback(decoder, of_tell_cb); s &= OggFLAC__seekable_stream_decoder_set_length_callback(decoder, of_length_cb); s &= OggFLAC__seekable_stream_decoder_set_eof_callback(decoder, of_EOF_cb); s &= OggFLAC__seekable_stream_decoder_set_write_callback(decoder, oggflacWrite); s &= OggFLAC__seekable_stream_decoder_set_metadata_respond(decoder, FLAC__METADATA_TYPE_VORBIS_COMMENT); s &= OggFLAC__seekable_stream_decoder_set_error_callback(decoder, of_error_cb); s &= OggFLAC__seekable_stream_decoder_set_client_data(decoder, (void *)data); if (!s) { ERROR("oggflac problem before init()\n"); goto fail; } if (OggFLAC__seekable_stream_decoder_init(decoder) != OggFLAC__SEEKABLE_STREAM_DECODER_OK) { ERROR("oggflac problem doing init()\n"); goto fail; } if (!OggFLAC__seekable_stream_decoder_process_until_end_of_metadata (decoder)) { ERROR("oggflac problem reading metadata\n"); goto fail; } return decoder; fail: oggflacPrintErroredState(OggFLAC__seekable_stream_decoder_get_state (decoder)); OggFLAC__seekable_stream_decoder_delete(decoder); return NULL; } /* public functions: */ static MpdTag *oggflac_TagDup(char *file) { InputStream inStream; OggFLAC__SeekableStreamDecoder *decoder; FlacData data; if (openInputStream(&inStream, file) < 0) return NULL; if (ogg_stream_type_detect(&inStream) != FLAC) { closeInputStream(&inStream); return NULL; } init_FlacData(&data, NULL, &inStream); /* errors here won't matter, * data.tag will be set or unset, that's all we care about */ decoder = full_decoder_init_and_read_metadata(&data, 1); oggflac_cleanup(&data, decoder); closeInputStream(&inStream); return data.tag; } static unsigned int oggflac_try_decode(InputStream * inStream) { return (ogg_stream_type_detect(inStream) == FLAC) ? 1 : 0; } static int oggflac_decode(struct decoder * mpd_decoder, InputStream * inStream) { OggFLAC__SeekableStreamDecoder *decoder = NULL; FlacData data; int ret = 0; init_FlacData(&data, mpd_decoder, inStream); if (!(decoder = full_decoder_init_and_read_metadata(&data, 0))) { ret = -1; goto fail; } decoder_initialized(mpd_decoder, &data.audio_format, data.total_time); while (1) { OggFLAC__seekable_stream_decoder_process_single(decoder); if (OggFLAC__seekable_stream_decoder_get_state(decoder) != OggFLAC__SEEKABLE_STREAM_DECODER_OK) { break; } if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_SEEK) { FLAC__uint64 sampleToSeek = decoder_seek_where(mpd_decoder) * data.audio_format.sampleRate + 0.5; if (OggFLAC__seekable_stream_decoder_seek_absolute (decoder, sampleToSeek)) { decoder_clear(mpd_decoder); data.time = ((float)sampleToSeek) / data.audio_format.sampleRate; data.position = 0; decoder_command_finished(mpd_decoder); } else decoder_seek_error(mpd_decoder); } } if (decoder_get_command(mpd_decoder) != DECODE_COMMAND_STOP) { oggflacPrintErroredState (OggFLAC__seekable_stream_decoder_get_state(decoder)); OggFLAC__seekable_stream_decoder_finish(decoder); } /* send last little bit */ if (data.chunk_length > 0 && decoder_get_command(mpd_decoder) != DECODE_COMMAND_STOP) { flacSendChunk(&data); decoder_flush(mpd_decoder); } fail: oggflac_cleanup(&data, decoder); return ret; } 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 = { "oggflac", NULL, NULL, oggflac_try_decode, oggflac_decode, NULL, oggflac_TagDup, INPUT_PLUGIN_STREAM_URL | INPUT_PLUGIN_STREAM_FILE, oggflac_Suffixes, oggflac_mime_types }; #else /* !HAVE_FLAC */ struct decoder_plugin oggflacPlugin; #endif /* HAVE_OGGFLAC */