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Code Issues Releases Activity

mpjpeg: video streaming will no longer break and stop on Firefox

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mpjpeg video streamings would break and stop on Firefox after 1 - 30
seconds.
In order to fix this, two changes were made:
1. Replaced all occurrences of '\n' character in mjpeg metadata
   with occurences of "\r\n".
2. Added "Content-length: <packet-size>" metadata entry for each
   sent frame.

The change has been tested on Google Chrome 17.0.963.78 and Firefox 10.0.2
on lubuntu 11.10 and the streaming seems to work fine now.
This commit is contained in:
Zalewa PL 2012-03-10 18:32:02 +01:00 committed by Michael Niedermayer
parent 2ff540a0fe
commit 0d2f4eedc8
1 changed files with 6 additions and 3 deletions
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9
libavformat/mpjpeg.c
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@ -28,7 +28,7 @@ static int mpjpeg_write_header(AVFormatContext *s)
{
uint8_t buf1[256];
snprintf(buf1, sizeof(buf1), "--%s\n", BOUNDARY_TAG);
snprintf(buf1, sizeof(buf1), "--%s\r\n", BOUNDARY_TAG);
avio_write(s->pb, buf1, strlen(buf1));
avio_flush(s->pb);
return 0;
@ -38,11 +38,14 @@ static int mpjpeg_write_packet(AVFormatContext *s, AVPacket *pkt)
{
uint8_t buf1[256];
snprintf(buf1, sizeof(buf1), "Content-type: image/jpeg\n\n");
snprintf(buf1, sizeof(buf1), "Content-type: image/jpeg\r\n");
avio_write(s->pb, buf1, strlen(buf1));
snprintf(buf1, sizeof(buf1), "Content-length: %d\r\n\r\n", pkt->size);
avio_write(s->pb, buf1, strlen(buf1));
avio_write(s->pb, pkt->data, pkt->size);
snprintf(buf1, sizeof(buf1), "\n--%s\n", BOUNDARY_TAG);
snprintf(buf1, sizeof(buf1), "\r\n--%s\r\n", BOUNDARY_TAG);
avio_write(s->pb, buf1, strlen(buf1));
avio_flush(s->pb);
return 0;