96 lines
2.4 KiB
C++
96 lines
2.4 KiB
C++
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#if defined(WIN32) || defined(_WIN32)
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#ifndef _CRT_SECURE_NO_WARNINGS
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#define _CRT_SECURE_NO_WARNINGS
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#endif
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#endif
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#include "VP8Source.h"
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#include <cstdio>
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#include <chrono>
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#if defined(__linux) || defined(__linux__)
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#include <sys/time.h>
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#endif
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using namespace xop;
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using namespace std;
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VP8Source::VP8Source(uint32_t framerate)
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: framerate_(framerate)
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{
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payload_ = 96;
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clock_rate_ = 90000;
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}
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VP8Source* VP8Source::CreateNew(uint32_t framerate)
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{
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return new VP8Source(framerate);
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}
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VP8Source::~VP8Source()
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{
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}
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string VP8Source::GetMediaDescription(uint16_t port)
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{
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char buf[100] = { 0 };
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sprintf(buf, "m=video %hu RTP/AVP 96", port);
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return string(buf);
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}
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string VP8Source::GetAttribute()
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{
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return string("a=rtpmap:96 VP8/90000");
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}
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bool VP8Source::HandleFrame(MediaChannelId channel_id, AVFrame frame)
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{
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uint8_t* frame_buf = frame.buffer.get();
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uint32_t frame_size = frame.size;
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if (frame.timestamp == 0) {
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frame.timestamp = GetTimestamp();
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}
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// X = R = N = 0; PartID = 0;
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// S = 1 if this is the first (or only) fragment of the frame
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uint8_t vp8_payload_descriptor = 0x10;
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while (frame_size > 0) {
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uint32_t payload_size = MAX_RTP_PAYLOAD_SIZE;
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RtpPacket rtp_pkt;
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rtp_pkt.type = frame.type;
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rtp_pkt.timestamp = frame.timestamp;
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rtp_pkt.size = RTP_TCP_HEAD_SIZE + RTP_HEADER_SIZE + RTP_VPX_HEAD_SIZE + MAX_RTP_PAYLOAD_SIZE;
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rtp_pkt.last = 0;
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if (frame_size < MAX_RTP_PAYLOAD_SIZE) {
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payload_size = frame_size;
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rtp_pkt.size = RTP_TCP_HEAD_SIZE + RTP_HEADER_SIZE + RTP_VPX_HEAD_SIZE + frame_size;
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rtp_pkt.last = 1;
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}
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rtp_pkt.data.get()[RTP_TCP_HEAD_SIZE + RTP_HEADER_SIZE + 0] = vp8_payload_descriptor;
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memcpy(rtp_pkt.data.get() + RTP_TCP_HEAD_SIZE + RTP_HEADER_SIZE + RTP_VPX_HEAD_SIZE, frame_buf, payload_size);
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if (send_frame_callback_) {
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if (!send_frame_callback_(channel_id, rtp_pkt))
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return false;
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}
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frame_buf += payload_size;
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frame_size -= payload_size;
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vp8_payload_descriptor = 0x00;
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}
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return true;
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}
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uint32_t VP8Source::GetTimestamp()
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{
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auto time_point = chrono::time_point_cast<chrono::microseconds>(chrono::steady_clock::now());
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return (uint32_t)((time_point.time_since_epoch().count() + 500) / 1000 * 90);
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}
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