[FFmpeg-devel] [PATCH 2/2] avformat/rtpenc_rfc4175: support for interlace format
lance.lmwang at gmail.com
lance.lmwang at gmail.com
Sun Jan 2 02:43:31 EET 2022
From: Limin Wang <lance.lmwang at gmail.com>
Below is step for how to test in your local machine:
wget --no-check-certificate https://samples.ffmpeg.org/MPEG2/interlaced/burosch1.mpg
1. test interlace:
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,http,https,rtp,udp,tcp,tls" test.sdp
2. test progressive:
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,http,https,rtp,udp,tcp,tls" test.sdp
Signed-off-by: Limin Wang <lance.lmwang at gmail.com>
---
If someone have other interface source from hardware, please help to test.
libavformat/rtpenc.c | 9 +++++++--
libavformat/rtpenc.h | 2 +-
libavformat/rtpenc_rfc4175.c | 31 +++++++++++++++++++++----------
libavformat/sdp.c | 5 ++++-
4 files changed, 33 insertions(+), 14 deletions(-)
diff --git a/libavformat/rtpenc.c b/libavformat/rtpenc.c
index 17f5d9d..6be67b5 100644
--- a/libavformat/rtpenc.c
+++ b/libavformat/rtpenc.c
@@ -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,
diff --git a/libavformat/rtpenc.h b/libavformat/rtpenc.h
index 70ea85b..9c8ad14 100644
--- a/libavformat/rtpenc.h
+++ b/libavformat/rtpenc.h
@@ -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);
diff --git a/libavformat/rtpenc_rfc4175.c b/libavformat/rtpenc_rfc4175.c
index ea4c370..257d072 100644
--- a/libavformat/rtpenc_rfc4175.c
+++ b/libavformat/rtpenc_rfc4175.c
@@ -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;
diff --git a/libavformat/sdp.c b/libavformat/sdp.c
index 111a25b..ec05d4b 100644
--- a/libavformat/sdp.c
+++ b/libavformat/sdp.c
@@ -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;
}
--
1.8.3.1
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