72 lines
2.6 KiB
Diff
72 lines
2.6 KiB
Diff
diff --git a/libavformat/rtpenc.c b/libavformat/rtpenc.c
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index 63047beccc..d59ec3dc8c 100644
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--- a/libavformat/rtpenc.c
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+++ b/libavformat/rtpenc.c
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@@ -28,6 +28,8 @@
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#include "rtpenc.h"
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+#define EXT_ABS_SEND_TIME
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+
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static const AVOption options[] = {
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FF_RTP_FLAG_OPTS(RTPMuxContext, flags),
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{ "payload_type", "Specify RTP payload type", offsetof(RTPMuxContext, payload_type), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 127, AV_OPT_FLAG_ENCODING_PARAM },
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@@ -146,7 +148,11 @@ static int rtp_write_header(AVFormatContext *s1)
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s1->pb->max_packet_size);
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} else
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s1->packet_size = s1->pb->max_packet_size;
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+#ifdef EXT_ABS_SEND_TIME
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+ if (s1->packet_size <= 20) {
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+#else
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if (s1->packet_size <= 12) {
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+#endif
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av_log(s1, AV_LOG_ERROR, "Max packet size %u too low\n", s1->packet_size);
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return AVERROR(EIO);
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}
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@@ -154,7 +160,11 @@ static int rtp_write_header(AVFormatContext *s1)
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if (!s->buf) {
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return AVERROR(ENOMEM);
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}
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+#ifdef EXT_ABS_SEND_TIME
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+ s->max_payload_size = s1->packet_size - 20;
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+#else
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s->max_payload_size = s1->packet_size - 12;
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+#endif
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if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
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avpriv_set_pts_info(st, 32, 1, st->codecpar->sample_rate);
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@@ -332,16 +342,34 @@ static void rtcp_send_sr(AVFormatContext *s1, int64_t ntp_time, int bye)
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void ff_rtp_send_data(AVFormatContext *s1, const uint8_t *buf1, int len, int m)
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{
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RTPMuxContext *s = s1->priv_data;
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+ uint64_t ntp64_time;
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+ uint32_t absoluteSendTime;
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av_log(s1, AV_LOG_TRACE, "rtp_send_data size=%d\n", len);
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/* build the RTP header */
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+#ifdef EXT_ABS_SEND_TIME
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+ avio_w8(s1->pb, RTP_VERSION << 6 | 0x10); // extention bit
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+#else
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avio_w8(s1->pb, RTP_VERSION << 6);
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+#endif
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avio_w8(s1->pb, (s->payload_type & 0x7f) | ((m & 0x01) << 7));
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avio_wb16(s1->pb, s->seq);
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avio_wb32(s1->pb, s->timestamp);
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avio_wb32(s1->pb, s->ssrc);
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+#ifdef EXT_ABS_SEND_TIME
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+ avio_wb16(s1->pb, 0xBEDE); // magic word
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+ avio_wb16(s1->pb, 0x0001); // length=1
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+ avio_w8(s1->pb, 0x32); // ID=3 and lenght=2
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+ ntp64_time = ff_get_formatted_ntp_time(ff_ntp_time());
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+ absoluteSendTime = (uint32_t)((ntp64_time>> 14) & 0x00ffffff);
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+ av_log(s1, AV_LOG_TRACE, "ntp64:%lu, abs_time:%u\n", ntp64_time, absoluteSendTime);
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+ avio_w8(s1->pb, (uint8_t)(absoluteSendTime >> 16));
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+ avio_w8(s1->pb, (uint8_t)(absoluteSendTime >> 8 & 0xff));
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+ avio_w8(s1->pb, (uint8_t)(absoluteSendTime & 0xff));
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+#endif
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+
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avio_write(s1->pb, buf1, len);
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avio_flush(s1->pb);
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