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Diffstat (limited to '')
-rw-r--r-- | src/decoder/plugins/FlacMetadata.hxx | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/src/decoder/plugins/FlacMetadata.hxx b/src/decoder/plugins/FlacMetadata.hxx new file mode 100644 index 000000000..e0449b2a2 --- /dev/null +++ b/src/decoder/plugins/FlacMetadata.hxx @@ -0,0 +1,140 @@ +/* + * 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 |