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Message-Id: <D8LNDL121AO8.SYT0MJAEHH06@gmail.com>
To: <ffmpeg-devel@ffmpeg.org>
From: "Marvin Scholz" <epirat07@gmail.com>
Date: Mon, 26 Sep 2022 21:24:25 +0200
Subject: [FFmpeg-devel] [PATCH] 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>
---
libavformat/rtpdec_mpeg4.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/libavformat/rtpdec_mpeg4.c b/libavformat/rtpdec_mpeg4.c
index 6531632b2d..06c96b38cb 100644
--- a/libavformat/rtpdec_mpeg4.c
+++ b/libavformat/rtpdec_mpeg4.c
@@ -38,6 +38,7 @@
/** Structure listing useful vars to parse RTP packet payload */
struct PayloadContext {
+ int bitrate;
int sizelength;
int indexlength;
int indexdeltalength;
@@ -83,6 +84,9 @@ typedef struct AttrNameMap {
#define ATTR_NAME_TYPE_INT 0
#define ATTR_NAME_TYPE_STR 1
static const AttrNameMap attr_names[] = {
+ { "bitrate", ATTR_NAME_TYPE_INT,
+ offsetof(PayloadContext, bitrate),
+ {0, INT32_MAX} },
{ "SizeLength", ATTR_NAME_TYPE_INT,
offsetof(PayloadContext, sizelength),
{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;
}
base-commit: 0ce405afb8df221b3a975a30b5c229449c8ed7da
--
2.39.5 (Apple Git-154)
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