mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-26 04:31:37 +08:00
102 lines
2.6 KiB
C++
102 lines
2.6 KiB
C++
#include "JPEG.h"
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#include "JPEGRtp.h"
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#include "Rtsp/Rtsp.h"
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#include "Util/util.h"
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#include "Extension/Factory.h"
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using namespace toolkit;
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namespace mediakit {
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bool JPEGTrack::inputFrame(const Frame::Ptr &frame) {
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if (!ready()) {
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if (_height > 0 && _width > 0) {
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if (_tmp == 0) _tmp = frame->dts();
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else _fps = 1000.0 / (frame->dts() - _tmp);
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} else getVideoResolution((uint8_t*)frame->data(), frame->size());
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return false;
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}
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return VideoTrack::inputFrame(frame);
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}
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void JPEGTrack::getVideoResolution(const uint8_t *buf, int len) {
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for (int i = 0; i < len - 8; i++) {
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if (buf[i] != 0xff)
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continue;
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if (buf[i + 1] == 0xC0 /*SOF0*/) {
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_height = buf[i + 5] * 256 + buf[i + 6];
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_width = buf[i + 7] * 256 + buf[i + 8];
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return;
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}
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}
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}
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class JPEGSdp : public Sdp {
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public:
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JPEGSdp(int bitrate) : Sdp(90000, Rtsp::PT_JPEG) {
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_printer << "m=video 0 RTP/AVP " << (int)getPayloadType() << "\r\n";
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if (bitrate) {
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_printer << "b=AS:" << bitrate << "\r\n";
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}
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}
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std::string getSdp() const { return _printer; }
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private:
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_StrPrinter _printer;
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};
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Sdp::Ptr JPEGTrack::getSdp(uint8_t) const {
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return std::make_shared<JPEGSdp>(getBitRate() / 1024);
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}
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namespace {
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CodecId getCodec() {
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return CodecJPEG;
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}
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Track::Ptr getTrackByCodecId(int sample_rate, int channels, int sample_bit) {
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return std::make_shared<JPEGTrack>();
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}
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Track::Ptr getTrackBySdp(const SdpTrack::Ptr &track) {
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return std::make_shared<JPEGTrack>();
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}
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RtpCodec::Ptr getRtpEncoderByCodecId(uint8_t pt) {
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return std::make_shared<JPEGRtpEncoder>();
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}
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RtpCodec::Ptr getRtpDecoderByCodecId() {
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return std::make_shared<JPEGRtpDecoder>();
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}
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RtmpCodec::Ptr getRtmpEncoderByTrack(const Track::Ptr &track) {
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WarnL << "Unsupported jpeg rtmp encoder";
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return nullptr;
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}
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RtmpCodec::Ptr getRtmpDecoderByTrack(const Track::Ptr &track) {
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WarnL << "Unsupported jpeg rtmp decoder";
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return nullptr;
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}
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Frame::Ptr getFrameFromPtr(const char *data, size_t bytes, uint64_t dts, uint64_t pts) {
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return std::make_shared<JPEGFrame<FrameFromPtr>>(0, CodecJPEG, (char *)data, bytes, dts, pts);
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}
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} // namespace
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CodecPlugin jpeg_plugin = { getCodec,
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getTrackByCodecId,
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getTrackBySdp,
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getRtpEncoderByCodecId,
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getRtpDecoderByCodecId,
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getRtmpEncoderByTrack,
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getRtmpDecoderByTrack,
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getFrameFromPtr };
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} // namespace mediakit
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