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
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* This project's homepage is: http://www.musicpd.org
*
* Common data structures and functions used by FLAC and OggFLAC
* (c) 2005 by Eric Wong <normalperson@yhbt.net>
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "../decoder_api.h"
#if defined(HAVE_FLAC) || defined(HAVE_OGGFLAC)
#include "_flac_common.h"
#include "../log.h"
#include <FLAC/format.h>
#include <FLAC/metadata.h>
void init_FlacData(FlacData * data, struct decoder * decoder,
InputStream * inStream)
{
data->chunk_length = 0;
data->time = 0;
data->position = 0;
data->bitRate = 0;
data->decoder = decoder;
data->inStream = inStream;
data->replayGainInfo = NULL;
data->tag = NULL;
}
static int flacFindVorbisCommentFloat(const FLAC__StreamMetadata * block,
const char *cmnt, float *fl)
{
int offset =
FLAC__metadata_object_vorbiscomment_find_entry_from(block, 0, cmnt);
if (offset >= 0) {
size_t pos = strlen(cmnt) + 1; /* 1 is for '=' */
int len = block->data.vorbis_comment.comments[offset].length
- pos;
if (len > 0) {
unsigned char tmp;
unsigned char *p = &(block->data.vorbis_comment.
comments[offset].entry[pos]);
tmp = p[len];
p[len] = '\0';
*fl = (float)atof((char *)p);
p[len] = tmp;
return 1;
}
}
return 0;
}
/* replaygain stuff by AliasMrJones */
static void flacParseReplayGain(const FLAC__StreamMetadata * block,
FlacData * data)
{
int found = 0;
if (data->replayGainInfo)
freeReplayGainInfo(data->replayGainInfo);
data->replayGainInfo = newReplayGainInfo();
found |= flacFindVorbisCommentFloat(block, "replaygain_album_gain",
&data->replayGainInfo->albumGain);
found |= flacFindVorbisCommentFloat(block, "replaygain_album_peak",
&data->replayGainInfo->albumPeak);
found |= flacFindVorbisCommentFloat(block, "replaygain_track_gain",
&data->replayGainInfo->trackGain);
found |= flacFindVorbisCommentFloat(block, "replaygain_track_peak",
&data->replayGainInfo->trackPeak);
if (!found) {
freeReplayGainInfo(data->replayGainInfo);
data->replayGainInfo = NULL;
}
}
/* tracknumber is used in VCs, MPD uses "track" ..., all the other
* tag names match */
static const char *VORBIS_COMMENT_TRACK_KEY = "tracknumber";
static const char *VORBIS_COMMENT_DISC_KEY = "discnumber";
static unsigned int commentMatchesAddToTag(const
FLAC__StreamMetadata_VorbisComment_Entry
* entry, unsigned int itemType,
struct tag ** tag)
{
const char *str;
size_t slen;
int vlen;
switch (itemType) {
case TAG_ITEM_TRACK:
str = VORBIS_COMMENT_TRACK_KEY;
break;
case TAG_ITEM_DISC:
str = VORBIS_COMMENT_DISC_KEY;
break;
default:
str = mpdTagItemKeys[itemType];
}
slen = strlen(str);
vlen = entry->length - slen - 1;
if ((vlen > 0) && (0 == strncasecmp(str, (char *)entry->entry, slen))
&& (*(entry->entry + slen) == '=')) {
if (!*tag)
*tag = newMpdTag();
addItemToMpdTagWithLen(*tag, itemType,
(char *)(entry->entry + slen + 1), vlen);
return 1;
}
return 0;
}
struct tag *copyVorbisCommentBlockToMpdTag(const FLAC__StreamMetadata * block,
struct tag * tag)
{
unsigned int i, j;
FLAC__StreamMetadata_VorbisComment_Entry *comments;
comments = block->data.vorbis_comment.comments;
for (i = block->data.vorbis_comment.num_comments; i != 0; --i) {
for (j = TAG_NUM_OF_ITEM_TYPES; j--;) {
if (commentMatchesAddToTag(comments, j, &tag))
break;
}
comments++;
}
return tag;
}
void flac_metadata_common_cb(const FLAC__StreamMetadata * block,
FlacData * data)
{
const FLAC__StreamMetadata_StreamInfo *si = &(block->data.stream_info);
switch (block->type) {
case FLAC__METADATA_TYPE_STREAMINFO:
data->audio_format.bits = (mpd_sint8)si->bits_per_sample;
data->audio_format.sampleRate = si->sample_rate;
data->audio_format.channels = (mpd_sint8)si->channels;
data->total_time = ((float)si->total_samples) / (si->sample_rate);
break;
case FLAC__METADATA_TYPE_VORBIS_COMMENT:
flacParseReplayGain(block, data);
default:
break;
}
}
void flac_error_common_cb(const char *plugin,
const FLAC__StreamDecoderErrorStatus status,
mpd_unused FlacData * data)
{
if (decoder_get_command(data->decoder) == DECODE_COMMAND_STOP)
return;
switch (status) {
case FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC:
ERROR("%s lost sync\n", plugin);
break;
case FLAC__STREAM_DECODER_ERROR_STATUS_BAD_HEADER:
ERROR("bad %s header\n", plugin);
break;
case FLAC__STREAM_DECODER_ERROR_STATUS_FRAME_CRC_MISMATCH:
ERROR("%s crc mismatch\n", plugin);
break;
default:
ERROR("unknown %s error\n", plugin);
}
}
#endif /* HAVE_FLAC || HAVE_OGGFLAC */
|
