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Parse IFF metadata.

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Patch by Sebastian Vater, cdgs D basty A googlemail

Originally committed as revision 23024 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Sebastian Vater 2010-05-05 17:26:59 +00:00 committed by Carl Eugen Hoyos
parent cfdaee45d1
commit 8af7dbce61
1 changed files with 41 additions and 7 deletions
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48
libavformat/iff.c
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@ -92,6 +92,25 @@ static void interleave_stereo(const uint8_t *src, uint8_t *dest, int size)
}
}
/* Metadata string read */
static int get_metadata(AVFormatContext *s,
const char *const tag,
const unsigned data_size)
{
uint8_t *buf = ((data_size + 1) == 0) ? NULL : av_malloc(data_size + 1);
if (!buf)
return AVERROR(ENOMEM);
if (get_buffer(s->pb, buf, data_size) < 0) {
av_free(buf);
return AVERROR(EIO);
}
buf[data_size] = 0;
av_metadata_set2(&s->metadata, tag, buf, AV_METADATA_DONT_STRDUP_VAL);
return 0;
}
static int iff_probe(AVProbeData *p)
{
const uint8_t *d = p->buf;
@ -110,7 +129,6 @@ static int iff_read_header(AVFormatContext *s,
AVStream *st;
uint32_t chunk_id, data_size;
int compression = -1;
char *buf;
st = av_new_stream(s, 0);
if (!st)
@ -123,6 +141,8 @@ static int iff_read_header(AVFormatContext *s,
while(!url_feof(pb)) {
uint64_t orig_pos;
int res;
const char *metadata_tag = NULL;
chunk_id = get_le32(pb);
data_size = get_be32(pb);
orig_pos = url_ftell(pb);
@ -181,15 +201,29 @@ static int iff_read_header(AVFormatContext *s,
break;
case ID_ANNO:
buf = av_malloc(data_size + 1);
if (!buf)
break;
get_buffer(pb, buf, data_size);
buf[data_size] = 0;
av_metadata_set2(&s->metadata, "comment", buf, AV_METADATA_DONT_STRDUP_VAL);
case ID_TEXT:
metadata_tag = "comment";
break;
case ID_AUTH:
metadata_tag = "artist";
break;
case ID_COPYRIGHT:
metadata_tag = "copyright";
break;
case ID_NAME:
metadata_tag = "title";
break;
}
if (metadata_tag) {
if ((res = get_metadata(s, metadata_tag, data_size)) < 0) {
av_log(s, AV_LOG_ERROR, "iff: cannot allocate metadata tag %s!", metadata_tag);
return res;
}
}
url_fskip(pb, data_size - (url_ftell(pb) - orig_pos) + (data_size & 1));
}