/* * 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. */ #ifndef MPD_FLAC_METADATA_H #define MPD_FLAC_METADATA_H #include "Compiler.h" #include "FlacIOHandle.hxx" #include <FLAC/metadata.h> #include <assert.h> struct tag_handler; class MixRampInfo; class FlacMetadataChain { FLAC__Metadata_Chain *chain; public: FlacMetadataChain():chain(::FLAC__metadata_chain_new()) {} ~FlacMetadataChain() { ::FLAC__metadata_chain_delete(chain); } explicit operator FLAC__Metadata_Chain *() { return chain; } bool Read(const char *path) { return ::FLAC__metadata_chain_read(chain, path); } bool Read(FLAC__IOHandle handle, FLAC__IOCallbacks callbacks) { return ::FLAC__metadata_chain_read_with_callbacks(chain, handle, callbacks); } bool Read(InputStream &is) { return Read(::ToFlacIOHandle(is), ::GetFlacIOCallbacks(is)); } bool ReadOgg(const char *path) { return ::FLAC__metadata_chain_read_ogg(chain, path); } bool ReadOgg(FLAC__IOHandle handle, FLAC__IOCallbacks callbacks) { return ::FLAC__metadata_chain_read_ogg_with_callbacks(chain, handle, callbacks); } bool ReadOgg(InputStream &is) { return ReadOgg(::ToFlacIOHandle(is), ::GetFlacIOCallbacks(is)); } gcc_pure FLAC__Metadata_ChainStatus GetStatus() const { return ::FLAC__metadata_chain_status(chain); } gcc_pure const char *GetStatusString() const { return FLAC__Metadata_ChainStatusString[GetStatus()]; } void Scan(const tag_handler *handler, void *handler_ctx); }; class FLACMetadataIterator { FLAC__Metadata_Iterator *iterator; public: FLACMetadataIterator():iterator(::FLAC__metadata_iterator_new()) {} FLACMetadataIterator(FlacMetadataChain &chain) :iterator(::FLAC__metadata_iterator_new()) { ::FLAC__metadata_iterator_init(iterator, (FLAC__Metadata_Chain *)chain); } ~FLACMetadataIterator() { ::FLAC__metadata_iterator_delete(iterator); } bool Next() { return ::FLAC__metadata_iterator_next(iterator); } gcc_pure FLAC__StreamMetadata *GetBlock() { return ::FLAC__metadata_iterator_get_block(iterator); } }; struct Tag; struct ReplayGainInfo; static inline unsigned flac_duration(const FLAC__StreamMetadata_StreamInfo *stream_info) { assert(stream_info->sample_rate > 0); return (stream_info->total_samples + stream_info->sample_rate - 1) / stream_info->sample_rate; } bool flac_parse_replay_gain(ReplayGainInfo &rgi, const FLAC__StreamMetadata *block); MixRampInfo flac_parse_mixramp(const FLAC__StreamMetadata *block); Tag flac_vorbis_comments_to_tag(const FLAC__StreamMetadata_VorbisComment *comment); void flac_scan_metadata(const FLAC__StreamMetadata *block, const tag_handler *handler, void *handler_ctx); #endif