/* * Copyright (C) 2003-2009 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. */ /* * OggFLAC support (half-stolen from flac_plugin.c :)) */ #include "config.h" /* must be first for large file support */ #include "_flac_common.h" #include "_ogg_common.h" #include "flac_metadata.h" #include <glib.h> #include <OggFLAC/seekable_stream_decoder.h> #include <assert.h> #include <unistd.h> static void oggflac_cleanup(OggFLAC__SeekableStreamDecoder * decoder) { if (decoder) OggFLAC__seekable_stream_decoder_delete(decoder); } static OggFLAC__SeekableStreamDecoderReadStatus of_read_cb(G_GNUC_UNUSED const OggFLAC__SeekableStreamDecoder * decoder, FLAC__byte buf[], unsigned *bytes, void *fdata) { struct flac_data *data = (struct flac_data *) fdata; size_t r; r = decoder_read(data->decoder, data->input_stream, (void *)buf, *bytes); *bytes = r; if (r == 0 && !input_stream_eof(data->input_stream) && decoder_get_command(data->decoder) == DECODE_COMMAND_NONE) return OggFLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_ERROR; return OggFLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_OK; } static OggFLAC__SeekableStreamDecoderSeekStatus of_seek_cb(G_GNUC_UNUSED const OggFLAC__SeekableStreamDecoder * decoder, FLAC__uint64 offset, void *fdata) { struct flac_data *data = (struct flac_data *) fdata; if (!input_stream_seek(data->input_stream, offset, SEEK_SET)) return OggFLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_ERROR; return OggFLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_OK; } static OggFLAC__SeekableStreamDecoderTellStatus of_tell_cb(G_GNUC_UNUSED const OggFLAC__SeekableStreamDecoder * decoder, FLAC__uint64 * offset, void *fdata) { struct flac_data *data = (struct flac_data *) fdata; *offset = (long)(data->input_stream->offset); return OggFLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_OK; } static OggFLAC__SeekableStreamDecoderLengthStatus of_length_cb(G_GNUC_UNUSED const OggFLAC__SeekableStreamDecoder * decoder, FLAC__uint64 * length, void *fdata) { struct flac_data *data = (struct flac_data *) fdata; if (data->input_stream->size < 0) return OggFLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_ERROR; *length = (size_t) (data->input_stream->size); return OggFLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_OK; } static FLAC__bool of_EOF_cb(G_GNUC_UNUSED const OggFLAC__SeekableStreamDecoder * decoder, void *fdata) { struct flac_data *data = (struct flac_data *) fdata; return (decoder_get_command(data->decoder) != DECODE_COMMAND_NONE && decoder_get_command(data->decoder) != DECODE_COMMAND_SEEK) || input_stream_eof(data->input_stream); } static void of_error_cb(G_GNUC_UNUSED const OggFLAC__SeekableStreamDecoder * decoder, FLAC__StreamDecoderErrorStatus status, void *fdata) { flac_error_common_cb("oggflac", status, (struct flac_data *) fdata); } static void oggflacPrintErroredState(OggFLAC__SeekableStreamDecoderState state) { switch (state) { case OggFLAC__SEEKABLE_STREAM_DECODER_MEMORY_ALLOCATION_ERROR: g_warning("oggflac allocation error\n"); break; case OggFLAC__SEEKABLE_STREAM_DECODER_READ_ERROR: g_warning("oggflac read error\n"); break; case OggFLAC__SEEKABLE_STREAM_DECODER_SEEK_ERROR: g_warning("oggflac seek error\n"); break; case OggFLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR: g_warning("oggflac seekable stream error\n"); break; case OggFLAC__SEEKABLE_STREAM_DECODER_ALREADY_INITIALIZED: g_warning("oggflac decoder already initialized\n"); break; case OggFLAC__SEEKABLE_STREAM_DECODER_INVALID_CALLBACK: g_warning("invalid oggflac callback\n"); break; case OggFLAC__SEEKABLE_STREAM_DECODER_UNINITIALIZED: g_warning("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 oggflac_write_cb(G_GNUC_UNUSED const OggFLAC__SeekableStreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 *const buf[], void *vdata) { struct flac_data *data = (struct flac_data *) vdata; return flac_common_write(data, frame, buf, 0); } /* used by TagDup */ static void of_metadata_dup_cb(G_GNUC_UNUSED const OggFLAC__SeekableStreamDecoder * decoder, const FLAC__StreamMetadata * block, void *vdata) { struct flac_data *data = (struct flac_data *) vdata; assert(data->tag != NULL); flac_tag_apply_metadata(data->tag, NULL, block); } /* used by decode */ static void of_metadata_decode_cb(G_GNUC_UNUSED const OggFLAC__SeekableStreamDecoder * dec, const FLAC__StreamMetadata * block, void *vdata) { flac_metadata_common_cb(block, (struct flac_data *) vdata); } static OggFLAC__SeekableStreamDecoder * full_decoder_init_and_read_metadata(struct flac_data *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, oggflac_write_cb); 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) { g_warning("oggflac problem before init()\n"); goto fail; } if (OggFLAC__seekable_stream_decoder_init(decoder) != OggFLAC__SEEKABLE_STREAM_DECODER_OK) { g_warning("oggflac problem doing init()\n"); goto fail; } if (!OggFLAC__seekable_stream_decoder_process_until_end_of_metadata (decoder)) { g_warning("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 struct tag * oggflac_tag_dup(const char *file) { struct input_stream input_stream; OggFLAC__SeekableStreamDecoder *decoder; struct flac_data data; struct tag *tag; if (!input_stream_open(&input_stream, file)) return NULL; if (ogg_stream_type_detect(&input_stream) != FLAC) { input_stream_close(&input_stream); return NULL; } /* rewind the stream, because ogg_stream_type_detect() has moved it */ input_stream_seek(&input_stream, 0, SEEK_SET); flac_data_init(&data, NULL, &input_stream); data.tag = tag_new(); /* 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(decoder); input_stream_close(&input_stream); if (tag_is_defined(data.tag)) { tag = data.tag; data.tag = NULL; } else tag = NULL; flac_data_deinit(&data); return tag; } static void oggflac_decode(struct decoder * mpd_decoder, struct input_stream *input_stream) { OggFLAC__SeekableStreamDecoder *decoder = NULL; struct flac_data data; struct audio_format audio_format; if (ogg_stream_type_detect(input_stream) != FLAC) return; /* rewind the stream, because ogg_stream_type_detect() has moved it */ input_stream_seek(input_stream, 0, SEEK_SET); flac_data_init(&data, mpd_decoder, input_stream); if (!(decoder = full_decoder_init_and_read_metadata(&data, 0))) { goto fail; } if (!flac_data_get_audio_format(&data, &audio_format)) goto fail; decoder_initialized(mpd_decoder, &audio_format, input_stream->seekable, (float)data.stream_info.total_samples / (float)data.stream_info.sample_rate); while (true) { 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 seek_sample = decoder_seek_where(mpd_decoder) * data.stream_info.sample_rate; if (OggFLAC__seekable_stream_decoder_seek_absolute (decoder, seek_sample)) { data.next_frame = seek_sample; data.position = 0; decoder_command_finished(mpd_decoder); } else decoder_seek_error(mpd_decoder); } } if (decoder_get_command(mpd_decoder) == DECODE_COMMAND_NONE) { oggflacPrintErroredState (OggFLAC__seekable_stream_decoder_get_state(decoder)); OggFLAC__seekable_stream_decoder_finish(decoder); } fail: oggflac_cleanup(decoder); flac_data_deinit(&data); } static const char *const oggflac_suffixes[] = { "ogg", "oga", NULL }; static const char *const oggflac_mime_types[] = { "audio/x-flac+ogg", "application/ogg", "application/x-ogg", NULL }; const struct decoder_plugin oggflac_decoder_plugin = { .name = "oggflac", .stream_decode = oggflac_decode, .tag_dup = oggflac_tag_dup, .suffixes = oggflac_suffixes, .mime_types = oggflac_mime_types };