aboutsummaryrefslogtreecommitdiffstats
path: root/src/decoder/FLACMetaData.hxx
blob: d474def62455b272a6f31c3e289fe22a4a123741 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
/*
 * Copyright (C) 2003-2012 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 "gcc.h"

#include <FLAC/metadata.h>

#include <assert.h>
#include <stdbool.h>

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 ReadOgg(const char *path) {
		return ::FLAC__metadata_chain_read_ogg(chain, path);
	}

	gcc_pure
	FLAC__Metadata_ChainStatus GetStatus() const {
		return ::FLAC__metadata_chain_status(chain);
	}

	gcc_pure
	const char *GetStatusString() const {
		return FLAC__Metadata_ChainStatusString[GetStatus()];
	}
};

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_handler;
struct tag;
struct replay_gain_info;

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(struct replay_gain_info *rgi,
		       const FLAC__StreamMetadata *block);

bool
flac_parse_mixramp(char **mixramp_start, char **mixramp_end,
		   const FLAC__StreamMetadata *block);

void
flac_vorbis_comments_to_tag(struct tag *tag,
			    const FLAC__StreamMetadata_VorbisComment *comment);

void
flac_scan_metadata(const FLAC__StreamMetadata *block,
		   const struct tag_handler *handler, void *handler_ctx);

bool
flac_scan_file2(const char *file,
		const struct tag_handler *handler, void *handler_ctx);

#endif