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/*
* Copyright (C) 2003-2013 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
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