mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-10-06 12:13:49 +08:00
110 lines
3.1 KiB
C++
110 lines
3.1 KiB
C++
/*
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* Copyright (c) 2016-present The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/ZLMediaKit/ZLMediaKit).
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*
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* Use of this source code is governed by MIT-like license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#include "L16.h"
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#include "Extension/Factory.h"
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#include "Extension/CommonRtp.h"
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#include "Extension/CommonRtmp.h"
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using namespace std;
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using namespace toolkit;
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namespace mediakit {
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/**
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* L16类型SDP
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*/
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class L16Sdp : public Sdp {
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public:
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/**
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* L16采样位数固定为16位
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* @param payload_type rtp payload type
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* @param channels 通道数
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* @param sample_rate 音频采样率
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* @param bitrate 比特率
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*/
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L16Sdp(int payload_type, int sample_rate, int channels, int bitrate) : Sdp(sample_rate, payload_type) {
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_printer << "m=audio 0 RTP/AVP " << payload_type << "\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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_printer << "a=rtpmap:" << payload_type << " " << getCodecName(CodecL16) << "/" << sample_rate << "/" << channels << "\r\n";
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}
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string getSdp() const override { return _printer; }
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private:
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_StrPrinter _printer;
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};
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Sdp::Ptr L16Track::getSdp(uint8_t payload_type) const {
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WarnL << "Enter L16Track::getSdp function";
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if (!ready()) {
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WarnL << getCodecName() << " Track未准备好";
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return nullptr;
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}
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return std::make_shared<L16Sdp>(payload_type, getAudioSampleRate(), getAudioChannel(), getBitRate() / 1024);
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}
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Track::Ptr L16Track::clone() const {
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return std::make_shared<L16Track>(*this);
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}
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namespace {
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CodecId getCodec() {
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return CodecL16;
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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<L16Track>(sample_rate, channels);
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}
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Track::Ptr getTrackBySdp(const SdpTrack::Ptr &track) {
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return std::make_shared<L16Track>(track->_samplerate, track->_channel);
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}
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RtpCodec::Ptr getRtpEncoderByCodecId(uint8_t pt) {
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return std::make_shared<CommonRtpEncoder>();
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}
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RtpCodec::Ptr getRtpDecoderByCodecId() {
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return std::make_shared<CommonRtpDecoder>(CodecL16);
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}
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RtmpCodec::Ptr getRtmpEncoderByTrack(const Track::Ptr &track) {
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WarnL << "Unsupported L16 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 L16 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<FrameFromPtr>(CodecL16, (char *)data, bytes, dts, pts);
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}
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} // namespace
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CodecPlugin l16_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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