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rtpdec_mpeg4: Add fmtp parsing of bitrate value

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According to RFC 6416 the audio stream sender can pass the data rate
for the audio bitstream as "bitrate=" media format parameter.

Signed-off-by: Marvin Scholz <epirat07@gmail.com>
This commit is contained in:
Erik Linge
2022-09-26 21:24:25 +02:00
committed by Marvin Scholz
parent cacc68f3b5
commit 09a83e095d
1 changed files with 7 additions and 0 deletions
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7
libavformat/rtpdec_mpeg4.c
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@@ -38,6 +38,7 @@
/** Structure listing useful vars to parse RTP packet payload */ /** Structure listing useful vars to parse RTP packet payload */
struct PayloadContext { struct PayloadContext {
int bitrate;
int sizelength; int sizelength;
int indexlength; int indexlength;
int indexdeltalength; int indexdeltalength;
@@ -83,6 +84,9 @@ typedef struct AttrNameMap {
#define ATTR_NAME_TYPE_INT 0 #define ATTR_NAME_TYPE_INT 0
#define ATTR_NAME_TYPE_STR 1 #define ATTR_NAME_TYPE_STR 1
static const AttrNameMap attr_names[] = { static const AttrNameMap attr_names[] = {
{ "bitrate", ATTR_NAME_TYPE_INT,
offsetof(PayloadContext, bitrate),
{0, INT32_MAX} },
{ "SizeLength", ATTR_NAME_TYPE_INT, { "SizeLength", ATTR_NAME_TYPE_INT,
offsetof(PayloadContext, sizelength), offsetof(PayloadContext, sizelength),
{0, 32} }, // SizeLength number of bits used to encode AU-size integer value {0, 32} }, // SizeLength number of bits used to encode AU-size integer value
@@ -332,6 +336,9 @@ static int parse_fmtp(AVFormatContext *s,
} }
} }
} }
if (!strcmp(attr, "bitrate")) {
par->bit_rate = data->bitrate;
}
} }
return 0; return 0;
} }