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asfdec: read values properly

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The length of BOOL values is 16 bits in the Metadata Object but
32 bits in the Extended Content Description Object.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Alexandra Hájková 2015-08-04 12:46:27 +02:00 committed by Luca Barbato
parent b197f78329
commit 944f60866f
1 changed files with 36 additions and 16 deletions
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52
libavformat/asfdec.c
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@ -304,30 +304,41 @@ failed:
av_freep(&value);
return ret;
}
static int asf_read_generic_value(AVFormatContext *s, const uint8_t *name,
uint16_t name_len, int type, AVDictionary **met)
static int asf_read_generic_value(AVIOContext *pb, int type, uint64_t *value)
{
AVIOContext *pb = s->pb;
uint64_t value;
char buf[32];
switch (type) {
case ASF_BOOL:
value = avio_rl32(pb);
*value = avio_rl16(pb);
break;
case ASF_DWORD:
value = avio_rl32(pb);
*value = avio_rl32(pb);
break;
case ASF_QWORD:
value = avio_rl64(pb);
*value = avio_rl64(pb);
break;
case ASF_WORD:
value = avio_rl16(pb);
*value = avio_rl16(pb);
break;
default:
return AVERROR_INVALIDDATA;
}
return 0;
}
static int asf_set_metadata(AVFormatContext *s, const uint8_t *name,
uint16_t name_len, int type, AVDictionary **met)
{
AVIOContext *pb = s->pb;
uint64_t value;
char buf[32];
int ret;
ret = asf_read_generic_value(pb, type, &value);
if (ret < 0)
return ret;
snprintf(buf, sizeof(buf), "%"PRIu64, value);
if (av_dict_set(met, name, buf, 0) < 0)
av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");
@ -470,7 +481,7 @@ static int process_metadata(AVFormatContext *s, const uint8_t *name, uint16_t na
ff_get_guid(s->pb, &guid);
break;
default:
if ((ret = asf_read_generic_value(s, name, name_len, type, met)) < 0)
if ((ret = asf_set_metadata(s, name, name_len, type, met)) < 0)
return ret;
break;
}
@ -500,6 +511,10 @@ static int asf_read_ext_content(AVFormatContext *s, const GUIDParseTable *g)
avio_get_str16le(pb, name_len, name,
name_len);
type = avio_rl16(pb);
// BOOL values are 16 bits long in the Metadata Object
// but 32 bits long in the Extended Content Description Object
if (type == ASF_BOOL)
type = ASF_DWORD;
val_len = avio_rl16(pb);
ret = process_metadata(s, name, name_len, val_len, type, &s->metadata);
@ -528,13 +543,16 @@ static AVStream *find_stream(AVFormatContext *s, uint16_t st_num)
return st;
}
static void asf_store_aspect_ratio(AVFormatContext *s, uint8_t st_num, uint8_t *name)
static int asf_store_aspect_ratio(AVFormatContext *s, uint8_t st_num, uint8_t *name, int type)
{
ASFContext *asf = s->priv_data;
AVIOContext *pb = s->pb;
uint16_t value = 0;
uint64_t value = 0;
int ret;
value = avio_rl16(pb);
ret = asf_read_generic_value(pb, type, &value);
if (ret < 0)
return ret;
if (st_num < ASF_MAX_STREAMS) {
if (!strcmp(name, "AspectRatioX"))
@ -542,6 +560,7 @@ static void asf_store_aspect_ratio(AVFormatContext *s, uint8_t st_num, uint8_t *
else
asf->asf_sd[st_num].aspect_ratio.den = value;
}
return 0;
}
static int asf_read_metadata_obj(AVFormatContext *s, const GUIDParseTable *g)
@ -569,9 +588,10 @@ static int asf_read_metadata_obj(AVFormatContext *s, const GUIDParseTable *g)
return AVERROR(ENOMEM);
avio_get_str16le(pb, name_len, name,
buflen);
if (!strcmp(name, "AspectRatioX") || !strcmp(name, "AspectRatioY")) {
asf_store_aspect_ratio(s, st_num, name);
ret = asf_store_aspect_ratio(s, st_num, name, type);
if (ret < 0)
return ret;
} else {
if (st_num < ASF_MAX_STREAMS) {
if ((ret = process_metadata(s, name, name_len, val_len, type,