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flac: get CUE track titles from additional FLAC comments

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The cue sheet embedded in a flac file doen't contain any information
about track titles and similar.  There are three possibilities: Use an
external cue sheet that includes these information, use a tag CUESHEET
with a cue sheet including these information or use tags.  I think the
latter is the best option and is already used by other projects.
This commit is contained in:
Mario Lenz 2009-03-15 23:31:07 +01:00 committed by Max Kellermann
parent d47ef51cb3
commit 36dab871f1
4 changed files with 32 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
src/decoder/_flac_common.c
View File

@ -100,16 +100,24 @@ flac_parse_replay_gain(const FLAC__StreamMetadata *block,
*/
static const char *
flac_comment_value(const FLAC__StreamMetadata_VorbisComment_Entry *entry,
const char *name, size_t *length_r)
const char *name, const char *char_tnum, size_t *length_r)
{
size_t name_length = strlen(name);
size_t char_tnum_length = strlen(char_tnum);
const char *comment = (const char*)entry->entry;
if (entry->length > name_length &&
g_ascii_strncasecmp(comment, name, name_length) == 0 &&
comment[name_length] == '=') {
*length_r = entry->length - name_length - 1;
return comment + name_length + 1;
g_ascii_strncasecmp(comment, name, name_length) == 0) {
if (char_tnum != NULL) {
char_tnum_length = strlen(char_tnum);
if (g_ascii_strncasecmp(comment + name_length,
char_tnum, char_tnum_length) == 0)
name_length = name_length + char_tnum_length;
}
if (comment[name_length] == '=') {
*length_r = entry->length - name_length - 1;
return comment + name_length + 1;
}
}
return NULL;
@ -122,12 +130,13 @@ flac_comment_value(const FLAC__StreamMetadata_VorbisComment_Entry *entry,
static bool
flac_copy_comment(struct tag *tag,
const FLAC__StreamMetadata_VorbisComment_Entry *entry,
const char *name, enum tag_type tag_type)
const char *name, enum tag_type tag_type,
const char *char_tnum)
{
const char *value;
size_t value_length;
value = flac_comment_value(entry, name, &value_length);
value = flac_comment_value(entry, name, char_tnum, &value_length);
if (value != NULL) {
tag_add_item_n(tag, tag_type, value, value_length);
return true;
@ -142,34 +151,34 @@ static const char *VORBIS_COMMENT_TRACK_KEY = "tracknumber";
static const char *VORBIS_COMMENT_DISC_KEY = "discnumber";
static void
flac_parse_comment(struct tag *tag,
flac_parse_comment(struct tag *tag, const char *char_tnum,
const FLAC__StreamMetadata_VorbisComment_Entry *entry)
{
assert(tag != NULL);
if (flac_copy_comment(tag, entry, VORBIS_COMMENT_TRACK_KEY,
TAG_ITEM_TRACK) ||
TAG_ITEM_TRACK, char_tnum) ||
flac_copy_comment(tag, entry, VORBIS_COMMENT_DISC_KEY,
TAG_ITEM_DISC) ||
TAG_ITEM_DISC, char_tnum) ||
flac_copy_comment(tag, entry, "album artist",
TAG_ITEM_ALBUM_ARTIST))
TAG_ITEM_ALBUM_ARTIST, char_tnum))
return;
for (unsigned i = 0; i < TAG_NUM_OF_ITEM_TYPES; ++i)
if (flac_copy_comment(tag, entry,
tag_item_names[i], i))
tag_item_names[i], i, char_tnum))
return;
}
void
flac_vorbis_comments_to_tag(struct tag *tag,
flac_vorbis_comments_to_tag(struct tag *tag, const char *char_tnum,
const FLAC__StreamMetadata *block)
{
FLAC__StreamMetadata_VorbisComment_Entry *comments =
block->data.vorbis_comment.comments;
for (unsigned i = block->data.vorbis_comment.num_comments; i > 0; --i)
flac_parse_comment(tag, comments++);
flac_parse_comment(tag, char_tnum, comments++);
}
void flac_metadata_common_cb(const FLAC__StreamMetadata * block,
@ -188,7 +197,7 @@ void flac_metadata_common_cb(const FLAC__StreamMetadata * block,
flac_parse_replay_gain(block, data);
if (data->tag != NULL)
flac_vorbis_comments_to_tag(data->tag, block);
flac_vorbis_comments_to_tag(data->tag, NULL, block);
default:
break;

2
src/decoder/_flac_common.h
View File

@ -170,7 +170,7 @@ void flac_error_common_cb(const char *plugin,
struct flac_data *data);
void
flac_vorbis_comments_to_tag(struct tag *tag,
flac_vorbis_comments_to_tag(struct tag *tag, const char *char_tnum,
const FLAC__StreamMetadata *block);
FLAC__StreamDecoderWriteStatus

12
src/decoder/flac_plugin.c
View File

@ -227,7 +227,7 @@ flac_write_cb(const flac_decoder *dec, const FLAC__Frame *frame,
}
static struct tag *
flac_tag_load(const char *file)
flac_tag_load(const char *file, const char *char_tnum)
{
struct tag *tag;
FLAC__Metadata_SimpleIterator *it;
@ -265,7 +265,7 @@ flac_tag_load(const char *file)
if (!block)
break;
if (block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
flac_vorbis_comments_to_tag(tag, block);
flac_vorbis_comments_to_tag(tag, char_tnum, block);
} else if (block->type == FLAC__METADATA_TYPE_STREAMINFO) {
tag->time = ((float)block->data.stream_info.total_samples) /
block->data.stream_info.sample_rate + 0.5;
@ -298,13 +298,13 @@ flac_cue_tag_load(const char *file)
FLAC__StreamMetadata* cs = FLAC__metadata_object_new(FLAC__METADATA_TYPE_CUESHEET);
tnum = flac_vtrack_tnum(file);
char_tnum = g_strdup_printf("%u", tnum);
slash = strrchr(file, '/');
*slash = '\0';
tag = flac_tag_load(file);
tag = flac_tag_load(file, char_tnum);
char_tnum = g_strdup_printf("%u", tnum);
if (char_tnum != NULL)
{
tag_add_item( tag,
@ -350,7 +350,7 @@ flac_tag_dup(const char *file)
return flac_cue_tag_load(file);
else
#endif /* FLAC_API_VERSION_CURRENT >= 7 */
return flac_tag_load(file);
return flac_tag_load(file, NULL);
}
static void
@ -823,7 +823,7 @@ oggflac_tag_dup(const char *file)
if (!(block = FLAC__metadata_iterator_get_block(it)))
break;
if (block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
flac_vorbis_comments_to_tag(ret, block);
flac_vorbis_comments_to_tag(ret, NULL, block);
} else if (block->type == FLAC__METADATA_TYPE_STREAMINFO) {
ret->time = ((float)block->data.stream_info.
total_samples) /

2
src/decoder/oggflac_plugin.c
View File

@ -180,7 +180,7 @@ static void of_metadata_dup_cb(G_GNUC_UNUSED const OggFLAC__SeekableStreamDecode
block->data.stream_info.sample_rate + 0.5;
return;
case FLAC__METADATA_TYPE_VORBIS_COMMENT:
flac_vorbis_comments_to_tag(data->tag, block);
flac_vorbis_comments_to_tag(data->tag, NULL, block);
default:
break;
}