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Code Issues Releases Activity

avformat/rtpenc_rfc4175: support for interlace format

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Below are steps how to test on your local host:
wget --no-check-certificate https://samples.ffmpeg.org/MPEG2/interlaced/burosch1.mpg

1. interlace format:
ffmpeg  -re -i ./burosch1.mpg  -c:v bitpacked  -pix_fmt yuv422p10  -f rtp  rtp://239.255.0.1:6000
copy and create sdp file test.sdp
ffplay -buffer_size 671088640 -protocol_whitelist "file,rtp,udp"  test.sdp

2. progressive format:
ffmpeg  -re -i ./burosch1.mpg  -vf yadif -c:v bitpacked  -pix_fmt yuv422p10  -f rtp  rtp://239.255.0.1:6000
copy and create sdp file test.sdp
ffplay -buffer_size 671088640 -protocol_whitelist "file,rtp,udp"  test.sdp

Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
This commit is contained in:
Limin Wang 2022-01-01 20:19:50 +08:00
parent 3ea93bbd6d
commit b697326a68
4 changed files with 33 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
libavformat/rtpenc.c
View File

@ -622,9 +622,14 @@ static int rtp_write_packet(AVFormatContext *s1, AVPacket *pkt)
ff_rtp_send_jpeg(s1, pkt->data, size);
break;
case AV_CODEC_ID_BITPACKED:
case AV_CODEC_ID_RAWVIDEO:
ff_rtp_send_raw_rfc4175 (s1, pkt->data, size);
case AV_CODEC_ID_RAWVIDEO: {
int interlaced = st->codecpar->field_order != AV_FIELD_PROGRESSIVE;
ff_rtp_send_raw_rfc4175(s1, pkt->data, size, interlaced, 0);
if (interlaced)
ff_rtp_send_raw_rfc4175(s1, pkt->data, size, interlaced, 1);
break;
}
case AV_CODEC_ID_OPUS:
if (size > s->max_payload_size) {
av_log(s1, AV_LOG_ERROR,

2
libavformat/rtpenc.h
View File

@ -95,7 +95,7 @@ void ff_rtp_send_vc2hq(AVFormatContext *s1, const uint8_t *buf, int size, int in
void ff_rtp_send_vp8(AVFormatContext *s1, const uint8_t *buff, int size);
void ff_rtp_send_vp9(AVFormatContext *s1, const uint8_t *buff, int size);
void ff_rtp_send_jpeg(AVFormatContext *s1, const uint8_t *buff, int size);
void ff_rtp_send_raw_rfc4175(AVFormatContext *s1, const uint8_t *buf, int size);
void ff_rtp_send_raw_rfc4175(AVFormatContext *s1, const uint8_t *buf, int size, int interlaced, int field);
const uint8_t *ff_h263_find_resync_marker_reverse(const uint8_t *av_restrict start,
const uint8_t *av_restrict end);

31
libavformat/rtpenc_rfc4175.c
View File

@ -21,36 +21,40 @@
#include "avformat.h"
#include "rtpenc.h"
void ff_rtp_send_raw_rfc4175(AVFormatContext *s1, const uint8_t *buf, int size)
void ff_rtp_send_raw_rfc4175(AVFormatContext *s1, const uint8_t *buf, int size, int interlaced, int field)
{
RTPMuxContext *s = s1->priv_data;
int width = s1->streams[0]->codecpar->width;
int height = s1->streams[0]->codecpar->height;
int xinc, yinc, pgroup;
int field = 0;
int i = 0;
int offset = 0;
s->timestamp = s->cur_timestamp;
switch (s1->streams[0]->codecpar->format) {
case AV_PIX_FMT_UYVY422:
xinc = yinc = 2;
xinc = 2;
yinc = 1 << interlaced;
pgroup = 4;
break;
case AV_PIX_FMT_YUV422P10:
xinc = yinc = 2;
xinc = 2;
yinc = 1 << interlaced;
pgroup = 5;
break;
case AV_PIX_FMT_YUV420P:
xinc = yinc = 4;
xinc = 4;
yinc = 1 << interlaced;
pgroup = 6;
break;
case AV_PIX_FMT_RGB24:
xinc = yinc = 1;
xinc = 1;
yinc = 1 << interlaced;
pgroup = 3;
break;
case AV_PIX_FMT_BGR24:
xinc = yinc = 1;
xinc = 1;
yinc = 1 << interlaced;
pgroup = 3;
break;
default:
@ -72,7 +76,9 @@ void ff_rtp_send_raw_rfc4175(AVFormatContext *s1, const uint8_t *buf, int size)
headers = dest;
do {
pixels = width * xinc - offset;
int l_line;
pixels = width - offset;
length = (pixels * pgroup) / xinc;
left -= head_size;
@ -90,8 +96,9 @@ void ff_rtp_send_raw_rfc4175(AVFormatContext *s1, const uint8_t *buf, int size)
*dest++ = length & 0xff;
/* Line No */
*dest++ = ((i >> 8) & 0x7f) | ((field << 7) & 0x80);
*dest++ = i & 0xff;
l_line = i >> interlaced;
*dest++ = ((l_line >> 8) & 0x7f) | ((field << 7) & 0x80);
*dest++ = l_line & 0xff;
if (next_line) i += yinc;
cont = (left > (head_size + pgroup) && i < height) ? 0x80 : 0x00;
@ -106,16 +113,20 @@ void ff_rtp_send_raw_rfc4175(AVFormatContext *s1, const uint8_t *buf, int size)
} while (cont);
do {
int l_field;
int l_line;
int l_off;
int copy_offset;
length = (headers[0] << 8) | headers[1];
l_field = (headers[2] & 0x80) >> 7;
l_line = ((headers[2] & 0x7f) << 8) | headers[3];
l_off = ((headers[4] & 0x7f) << 8) | headers[5];
cont = headers[4] & 0x80;
headers += head_size;
if (interlaced)
l_line = 2 * l_line + l_field;
copy_offset = (l_line * width + l_off) * pgroup / xinc;
if (copy_offset + length > size)
break;

5
libavformat/sdp.c
View File

@ -728,9 +728,12 @@ static int sdp_write_media_attributes(char *buff, int size, const AVStream *st,
av_strlcatf(buff, size, "a=rtpmap:%d raw/90000\r\n"
"a=fmtp:%d sampling=%s; "
"width=%d; height=%d; "
"depth=%d\r\n",
"depth=%d",
payload_type, payload_type,
pix_fmt, p->width, p->height, bit_depth);
if (p->field_order != AV_FIELD_PROGRESSIVE)
av_strlcatf(buff, size, "; interlace");
av_strlcatf(buff, size, "\r\n");
break;
}