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rtmppkt: Repeat the full 32 bit timestamp for chunking continuation packets

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This fixes sending chunked packets (packets larger than the output
chunk size, which often can be e.g. 4096 bytes) with a timestamp delta
(or absolute timstamp, if it's a timestamp step backwards, or the
first packet of the stream) larger than 0xffffffff.

The RTMP spec explicitly says (in section 5.3.1.3.) that packets of
type 3 (continuation packets) should include this field, if the
previous non-continuation packet had it included.

The receiving code handles these packets correctly.

Pointed out by Cheolho Park.

CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2015-01-14 23:09:06 +02:00
parent def69553e7
commit 024e5a2d5f
1 changed files with 7 additions and 0 deletions
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7
libavformat/rtmppkt.c
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@ -386,6 +386,13 @@ int ff_rtmp_packet_write(URLContext *h, RTMPPacket *pkt,
if ((ret = ffurl_write(h, &marker, 1)) < 0)
return ret;
written++;
if (pkt->ts_field == 0xFFFFFF) {
uint8_t ts_header[4];
AV_WB32(ts_header, timestamp);
if ((ret = ffurl_write(h, ts_header, 4)) < 0)
return ret;
written += 4;
}
}
}
return written;