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整理优化代码

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xiongziliang
2019-06-28 17:30:13 +08:00
parent ea131d9740
commit 0b08831f5d
39 changed files with 30 additions and 30 deletions
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162
src/Extension/AACRtmpCodec.cpp Normal file
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/*
* MIT License
*
* Copyright (c) 2016-2019 xiongziliang <771730766@qq.com>
*
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "AACRtmpCodec.h"
namespace mediakit{
AACRtmpDecoder::AACRtmpDecoder() {
_adts = obtainFrame();
}
AACFrame::Ptr AACRtmpDecoder::obtainFrame() {
//从缓存池重新申请对象，防止覆盖已经写入环形缓存的对象
auto frame = ResourcePoolHelper<AACFrame>::obtainObj();
frame->aac_frame_length = 7;
frame->iPrefixSize = 7;
return frame;
}
bool AACRtmpDecoder::inputRtmp(const RtmpPacket::Ptr &pkt, bool key_pos) {
RtmpCodec::inputRtmp(pkt, false);
if (pkt->isCfgFrame()) {
_aac_cfg = pkt->getAacCfg();
return false;
}
if (!_aac_cfg.empty()) {
onGetAAC(pkt->strBuf.data() + 2, pkt->strBuf.size() - 2, pkt->timeStamp);
}
return false;
}
void AACRtmpDecoder::onGetAAC(const char* pcData, int iLen, uint32_t ui32TimeStamp) {
if(iLen + 7 > sizeof(_adts->buffer)){
WarnL << "Illegal adts data, exceeding the length limit.";
return;
}
//写adts结构头
makeAdtsHeader(_aac_cfg,*_adts);
//拷贝aac负载
memcpy(_adts->buffer + 7, pcData, iLen);
_adts->aac_frame_length = 7 + iLen;
_adts->timeStamp = ui32TimeStamp;
//adts结构头转成头7个字节
writeAdtsHeader(*_adts, _adts->buffer);
//写入环形缓存
RtmpCodec::inputFrame(_adts);
_adts = obtainFrame();
}
/////////////////////////////////////////////////////////////////////////////////////
AACRtmpEncoder::AACRtmpEncoder(const Track::Ptr &track) {
_track = dynamic_pointer_cast<AACTrack>(track);
}
void AACRtmpEncoder::inputFrame(const Frame::Ptr &frame) {
RtmpCodec::inputFrame(frame);
if(_aac_cfg.empty()){
if(frame->prefixSize() >= 7){
//包含adts头,从adts头获取aac配置信息
_aac_cfg = makeAdtsConfig(reinterpret_cast<const uint8_t *>(frame->data()));
makeAudioConfigPkt();
} else if(_track && _track->ready()){
//从track中和获取aac配置信息
_aac_cfg = _track->getAacCfg();
makeAudioConfigPkt();
}
}
if(!_aac_cfg.empty()){
RtmpPacket::Ptr rtmpPkt = ResourcePoolHelper<RtmpPacket>::obtainObj();
rtmpPkt->strBuf.clear();
//////////header
uint8_t is_config = false;
rtmpPkt->strBuf.push_back(_ui8AudioFlags);
rtmpPkt->strBuf.push_back(!is_config);
rtmpPkt->strBuf.append(frame->data() + frame->prefixSize(), frame->size() - frame->prefixSize());
rtmpPkt->bodySize = rtmpPkt->strBuf.size();
rtmpPkt->chunkId = CHUNK_AUDIO;
rtmpPkt->streamId = STREAM_MEDIA;
rtmpPkt->timeStamp = frame->stamp();
rtmpPkt->typeId = MSG_AUDIO;
RtmpCodec::inputRtmp(rtmpPkt, false);
}
}
void AACRtmpEncoder::makeAudioConfigPkt() {
makeAdtsHeader(_aac_cfg,*_adts);
int iSampleRate , iChannel , iSampleBit = 16;
getAACInfo(*_adts,iSampleRate,iChannel);
uint8_t flvStereoOrMono = (iChannel > 1);
uint8_t flvSampleRate;
switch (iSampleRate) {
case 48000:
case 44100:
flvSampleRate = 3;
break;
case 24000:
case 22050:
flvSampleRate = 2;
break;
case 12000:
case 11025:
flvSampleRate = 1;
break;
default:
flvSampleRate = 0;
break;
}
uint8_t flvSampleBit = iSampleBit == 16;
uint8_t flvAudioType = 10; //aac
_ui8AudioFlags = (flvAudioType << 4) | (flvSampleRate << 2) | (flvSampleBit << 1) | flvStereoOrMono;
RtmpPacket::Ptr rtmpPkt = ResourcePoolHelper<RtmpPacket>::obtainObj();
rtmpPkt->strBuf.clear();
//////////header
uint8_t is_config = true;
rtmpPkt->strBuf.push_back(_ui8AudioFlags);
rtmpPkt->strBuf.push_back(!is_config);
rtmpPkt->strBuf.append(_aac_cfg);
rtmpPkt->bodySize = rtmpPkt->strBuf.size();
rtmpPkt->chunkId = CHUNK_AUDIO;
rtmpPkt->streamId = STREAM_MEDIA;
rtmpPkt->timeStamp = 0;
rtmpPkt->typeId = MSG_AUDIO;
RtmpCodec::inputRtmp(rtmpPkt, false);
}
}//namespace mediakit

100
src/Extension/AACRtmpCodec.h Normal file
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/*
* MIT License
*
* Copyright (c) 2016-2019 xiongziliang <771730766@qq.com>
*
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef ZLMEDIAKIT_AACRTMPCODEC_H
#define ZLMEDIAKIT_AACRTMPCODEC_H
#include "Rtmp/RtmpCodec.h"
#include "Extension/Track.h"
#include "Extension/AAC.h"
namespace mediakit{
/**
* aac Rtmp转adts类
*/
class AACRtmpDecoder : public RtmpCodec , public ResourcePoolHelper<AACFrame> {
public:
typedef std::shared_ptr<AACRtmpDecoder> Ptr;
AACRtmpDecoder();
~AACRtmpDecoder() {}
/**
* 输入Rtmp并解码
* @param Rtmp Rtmp数据包
* @param key_pos 此参数内部强制转换为false,请忽略之
*/
bool inputRtmp(const RtmpPacket::Ptr &Rtmp, bool key_pos = false) override;
TrackType getTrackType() const override{
return TrackAudio;
}
CodecId getCodecId() const override{
return CodecAAC;
}
protected:
void onGetAAC(const char* pcData, int iLen, uint32_t ui32TimeStamp);
AACFrame::Ptr obtainFrame();
protected:
AACFrame::Ptr _adts;
string _aac_cfg;
};
/**
* aac adts转Rtmp类
*/
class AACRtmpEncoder : public AACRtmpDecoder , public ResourcePoolHelper<RtmpPacket> {
public:
typedef std::shared_ptr<AACRtmpEncoder> Ptr;
/**
* 构造函数，track可以为空，此时则在inputFrame时输入adts头
* 如果track不为空且包含adts头相关信息，
* 那么inputFrame时可以不输入adts头
* @param track
*/
AACRtmpEncoder(const Track::Ptr &track);
~AACRtmpEncoder() {}
/**
* 输入aac 数据，可以不带adts头
* @param frame aac数据
*/
void inputFrame(const Frame::Ptr &frame) override;
private:
void makeAudioConfigPkt();
private:
uint8_t _ui8AudioFlags;
AACTrack::Ptr _track;
};
}//namespace mediakit
#endif //ZLMEDIAKIT_AACRTMPCODEC_H

179
src/Extension/AACRtpCodec.cpp Normal file
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/*
* MIT License
*
* Copyright (c) 2016-2019 xiongziliang <771730766@qq.com>
*
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "AACRtpCodec.h"
namespace mediakit{
AACRtpEncoder::AACRtpEncoder(uint32_t ui32Ssrc,
uint32_t ui32MtuSize,
uint32_t ui32SampleRate,
uint8_t ui8PlayloadType,
uint8_t ui8Interleaved) :
RtpInfo(ui32Ssrc,
ui32MtuSize,
ui32SampleRate,
ui8PlayloadType,
ui8Interleaved){
}
void AACRtpEncoder::inputFrame(const Frame::Ptr &frame) {
RtpCodec::inputFrame(frame);
GET_CONFIG(uint32_t, cycleMS, Rtp::kCycleMS);
auto uiStamp = frame->stamp();
auto pcData = frame->data() + frame->prefixSize();
auto iLen = frame->size() - frame->prefixSize();
uiStamp %= cycleMS;
char *ptr = (char *) pcData;
int iSize = iLen;
while (iSize > 0) {
if (iSize <= _ui32MtuSize - 20) {
_aucSectionBuf[0] = 0;
_aucSectionBuf[1] = 16;
_aucSectionBuf[2] = iLen >> 5;
_aucSectionBuf[3] = (iLen & 0x1F) << 3;
memcpy(_aucSectionBuf + 4, ptr, iSize);
makeAACRtp(_aucSectionBuf, iSize + 4, true, uiStamp);
break;
}
_aucSectionBuf[0] = 0;
_aucSectionBuf[1] = 16;
_aucSectionBuf[2] = (iLen) >> 5;
_aucSectionBuf[3] = (iLen & 0x1F) << 3;
memcpy(_aucSectionBuf + 4, ptr, _ui32MtuSize - 20);
makeAACRtp(_aucSectionBuf, _ui32MtuSize - 16, false, uiStamp);
ptr += (_ui32MtuSize - 20);
iSize -= (_ui32MtuSize - 20);
}
}
void AACRtpEncoder::makeAACRtp(const void *data, unsigned int len, bool mark, uint32_t uiStamp) {
RtpCodec::inputRtp(makeRtp(getTrackType(),data,len,mark,uiStamp), false);
}
/////////////////////////////////////////////////////////////////////////////////////
AACRtpDecoder::AACRtpDecoder(const Track::Ptr &track){
auto aacTrack = dynamic_pointer_cast<AACTrack>(track);
if(!aacTrack || !aacTrack->ready()){
WarnL << "该aac track无效!";
}else{
_aac_cfg = aacTrack->getAacCfg();
}
_adts = obtainFrame();
}
AACRtpDecoder::AACRtpDecoder() {
_adts = obtainFrame();
}
AACFrame::Ptr AACRtpDecoder::obtainFrame() {
//从缓存池重新申请对象，防止覆盖已经写入环形缓存的对象
auto frame = ResourcePoolHelper<AACFrame>::obtainObj();
frame->aac_frame_length = 7;
frame->iPrefixSize = 7;
if(frame->syncword == 0 && !_aac_cfg.empty()) {
makeAdtsHeader(_aac_cfg,*frame);
}
return frame;
}
bool AACRtpDecoder::inputRtp(const RtpPacket::Ptr &rtppack, bool key_pos) {
RtpCodec::inputRtp(rtppack, false);
// 获取rtp数据长度
int length = rtppack->size() - rtppack->offset;
// 获取rtp数据
const uint8_t *rtp_packet_buf = (uint8_t *)rtppack->data() + rtppack->offset;
do
{
// 查询头部的偏移，每次2字节
uint32_t au_header_offset = 0;
//首2字节表示Au-Header的长度，单位bit，所以除以16得到Au-Header字节数
const uint16_t au_header_length = (((rtp_packet_buf[au_header_offset] << 8) | rtp_packet_buf[au_header_offset + 1]) >> 4);
au_header_offset += 2;
//assert(length > (2 + au_header_length * 2));
if (length < (2 + au_header_length * 2))
break;
// 存放每一个aac帧长度
std::vector<uint32_t > vec_aac_len;
for (int i = 0; i < au_header_length; ++i)
{
// 之后的2字节是AU_HEADER
const uint16_t au_header = ((rtp_packet_buf[au_header_offset] << 8) | rtp_packet_buf[au_header_offset + 1]);
// 其中高13位表示一帧AAC负载的字节长度，低3位无用
uint32_t nAac = (au_header >> 3);
vec_aac_len.push_back(nAac);
au_header_offset += 2;
}
// 真正aac负载开始处
const uint8_t *rtp_packet_payload = rtp_packet_buf + au_header_offset;
// 载荷查找
uint32_t next_aac_payload_offset = 0;
for (int j = 0; j < au_header_length; ++j)
{
// 当前aac包长度
const uint32_t cur_aac_payload_len = vec_aac_len.at(j);
if (_adts->aac_frame_length + cur_aac_payload_len > sizeof(AACFrame::buffer)) {
_adts->aac_frame_length = 7;
WarnL << "aac负载数据太长";
return false;
}
// 提取每一包aac载荷数据
memcpy(_adts->buffer + _adts->aac_frame_length, rtp_packet_payload + next_aac_payload_offset, cur_aac_payload_len);
_adts->aac_frame_length += (cur_aac_payload_len);
if (rtppack->mark == true) {
_adts->sequence = rtppack->sequence;
_adts->timeStamp = rtppack->timeStamp;
writeAdtsHeader(*_adts, _adts->buffer);
onGetAAC(_adts);
}
next_aac_payload_offset += cur_aac_payload_len;
}
} while (0);
return false;
}
void AACRtpDecoder::onGetAAC(const AACFrame::Ptr &frame) {
//写入环形缓存
RtpCodec::inputFrame(frame);
_adts = obtainFrame();
}
}//namespace mediakit

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src/Extension/AACRtpCodec.h Normal file
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/*
* MIT License
*
* Copyright (c) 2016-2019 xiongziliang <771730766@qq.com>
*
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef ZLMEDIAKIT_AACRTPCODEC_H
#define ZLMEDIAKIT_AACRTPCODEC_H
#include "Rtsp/RtpCodec.h"
#include "Extension/AAC.h"
namespace mediakit{
/**
* aac rtp转adts类
*/
class AACRtpDecoder : public RtpCodec , public ResourcePoolHelper<AACFrame> {
public:
typedef std::shared_ptr<AACRtpDecoder> Ptr;
AACRtpDecoder(const Track::Ptr &track);
~AACRtpDecoder() {}
/**
* 输入rtp并解码
* @param rtp rtp数据包
* @param key_pos 此参数内部强制转换为false,请忽略之
*/
bool inputRtp(const RtpPacket::Ptr &rtp, bool key_pos = false) override;
TrackType getTrackType() const override{
return TrackAudio;
}
CodecId getCodecId() const override{
return CodecAAC;
}
protected:
AACRtpDecoder();
private:
void onGetAAC(const AACFrame::Ptr &frame);
AACFrame::Ptr obtainFrame();
private:
AACFrame::Ptr _adts;
string _aac_cfg;
};
/**
* aac adts转rtp类
*/
class AACRtpEncoder : public AACRtpDecoder , public RtpInfo {
public:
typedef std::shared_ptr<AACRtpEncoder> Ptr;
/**
* @param ui32Ssrc ssrc
* @param ui32MtuSize mtu 大小
* @param ui32SampleRate 采样率
* @param ui8PlayloadType pt类型
* @param ui8Interleaved rtsp interleaved 值
*/
AACRtpEncoder(uint32_t ui32Ssrc,
uint32_t ui32MtuSize,
uint32_t ui32SampleRate,
uint8_t ui8PlayloadType = 97,
uint8_t ui8Interleaved = TrackAudio * 2);
~AACRtpEncoder() {}
/**
* 输入aac 数据，必须带dats头
* @param frame 带dats头的aac数据
*/
void inputFrame(const Frame::Ptr &frame) override;
private:
void makeAACRtp(const void *pData, unsigned int uiLen, bool bMark, uint32_t uiStamp);
private:
unsigned char _aucSectionBuf[1600];
};
}//namespace mediakit
#endif //ZLMEDIAKIT_AACRTPCODEC_H

10
src/Extension/Factory.cpp
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@@ -25,11 +25,11 @@
*/
#include "Factory.h"
#include "RtmpMuxer/H264RtmpCodec.h"
#include "RtmpMuxer/AACRtmpCodec.h"
#include "RtspMuxer/H264RtpCodec.h"
#include "RtspMuxer/AACRtpCodec.h"
#include "RtspMuxer/H265RtpCodec.h"
#include "H264RtmpCodec.h"
#include "AACRtmpCodec.h"
#include "H264RtpCodec.h"
#include "AACRtpCodec.h"
#include "H265RtpCodec.h"
namespace mediakit{

4
src/Extension/Factory.h
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@@ -30,8 +30,8 @@
#include <string>
#include "Rtmp/amf.h"
#include "Extension/Track.h"
#include "RtspMuxer/RtpCodec.h"
#include "RtmpMuxer/RtmpCodec.h"
#include "Rtsp/RtpCodec.h"
#include "Rtmp/RtmpCodec.h"
using namespace std;
using namespace toolkit;

260
src/Extension/H264RtmpCodec.cpp Normal file
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/*
* MIT License
*
* Copyright (c) 2016-2019 xiongziliang <771730766@qq.com>
*
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "H264RtmpCodec.h"
namespace mediakit{
H264RtmpDecoder::H264RtmpDecoder() {
_h264frame = obtainFrame();
}
H264Frame::Ptr H264RtmpDecoder::obtainFrame() {
//从缓存池重新申请对象，防止覆盖已经写入环形缓存的对象
auto frame = obtainObj();
frame->buffer.clear();
frame->iPrefixSize = 4;
return frame;
}
bool H264RtmpDecoder::inputRtmp(const RtmpPacket::Ptr &rtmp, bool key_pos) {
key_pos = decodeRtmp(rtmp);
RtmpCodec::inputRtmp(rtmp, key_pos);
return key_pos;
}
bool H264RtmpDecoder::decodeRtmp(const RtmpPacket::Ptr &pkt) {
if (pkt->isCfgFrame()) {
//缓存sps pps，后续插入到I帧之前
_sps = pkt->getH264SPS();
_pps = pkt->getH264PPS();
return false;
}
if (pkt->strBuf.size() > 9) {
uint32_t iTotalLen = pkt->strBuf.size();
uint32_t iOffset = 5;
uint8_t *cts_ptr = (uint8_t *) (pkt->strBuf.data() + 2);
int32_t cts = (((cts_ptr[0] << 16) | (cts_ptr[1] << 8) | (cts_ptr[2])) + 0xff800000) ^ 0xff800000;
auto pts = pkt->timeStamp + cts;
while(iOffset + 4 < iTotalLen){
uint32_t iFrameLen;
memcpy(&iFrameLen, pkt->strBuf.data() + iOffset, 4);
iFrameLen = ntohl(iFrameLen);
iOffset += 4;
if(iFrameLen + iOffset > iTotalLen){
break;
}
onGetH264_l(pkt->strBuf.data() + iOffset, iFrameLen, pkt->timeStamp , pts);
iOffset += iFrameLen;
}
}
return pkt->isVideoKeyFrame();
}
inline void H264RtmpDecoder::onGetH264_l(const char* pcData, int iLen, uint32_t dts,uint32_t pts) {
switch (H264_TYPE(pcData[0])) {
case H264Frame::NAL_IDR: {
//I frame
if(_sps.length()){
onGetH264(_sps.data(), _sps.length(), dts , pts);
}
if(_pps.length()){
onGetH264(_pps.data(), _pps.length(), dts , pts);
}
onGetH264(pcData, iLen, dts , pts);
}
break;
case H264Frame::NAL_B_P: {
//I or P or B frame
onGetH264(pcData, iLen, dts , pts);
}
break;
case H264Frame::NAL_SPS: {
_sps.assign(pcData, iLen);
}
break;
case H264Frame::NAL_PPS:{
_pps.assign(pcData, iLen);
}
break;
default:
break;
}
}
inline void H264RtmpDecoder::onGetH264(const char* pcData, int iLen, uint32_t dts,uint32_t pts) {
_h264frame->type = H264_TYPE(pcData[0]);
_h264frame->timeStamp = dts;
_h264frame->ptsStamp = pts;
_h264frame->buffer.assign("\x0\x0\x0\x1", 4); //添加264头
_h264frame->buffer.append(pcData, iLen);
//写入环形缓存
RtmpCodec::inputFrame(_h264frame);
_h264frame = obtainFrame();
}
////////////////////////////////////////////////////////////////////////
H264RtmpEncoder::H264RtmpEncoder(const Track::Ptr &track) {
_track = dynamic_pointer_cast<H264Track>(track);
}
void H264RtmpEncoder::inputFrame(const Frame::Ptr &frame) {
RtmpCodec::inputFrame(frame);
auto pcData = frame->data() + frame->prefixSize();
auto iLen = frame->size() - frame->prefixSize();
auto type = H264_TYPE(((uint8_t*)pcData)[0]);
if(!_gotSpsPps){
//尝试从frame中获取sps pps
switch (type){
case H264Frame::NAL_SPS:{
//sps
if(_sps.empty()){
_sps = string(pcData,iLen);
}
}
break;
case H264Frame::NAL_PPS:{
//pps
if(_pps.empty()){
_pps = string(pcData,iLen);
}
}
break;
default:
break;
}
if(_track && _track->ready()){
//尝试从track中获取sps pps信息
_sps = _track->getSps();
_pps = _track->getPps();
}
if(!_sps.empty() && !_pps.empty()){
_gotSpsPps = true;
makeVideoConfigPkt();
}
}
switch (type){
case H264Frame::NAL_IDR:
case H264Frame::NAL_B_P:{
if(_lastPacket && _lastPacket->timeStamp != frame->stamp()) {
RtmpCodec::inputRtmp(_lastPacket, _lastPacket->isVideoKeyFrame());
_lastPacket = nullptr;
}
if(!_lastPacket) {
//I or P or B frame
int8_t flags = 7; //h.264
bool is_config = false;
flags |= ((frame->keyFrame() ? FLV_KEY_FRAME : FLV_INTER_FRAME) << 4);
_lastPacket = ResourcePoolHelper<RtmpPacket>::obtainObj();
_lastPacket->strBuf.clear();
_lastPacket->strBuf.push_back(flags);
_lastPacket->strBuf.push_back(!is_config);
auto cts = frame->pts() - frame->dts();
cts = htonl(cts);
_lastPacket->strBuf.append((char *)&cts + 1, 3);
_lastPacket->chunkId = CHUNK_VIDEO;
_lastPacket->streamId = STREAM_MEDIA;
_lastPacket->timeStamp = frame->stamp();
_lastPacket->typeId = MSG_VIDEO;
}
auto size = htonl(iLen);
_lastPacket->strBuf.append((char *) &size, 4);
_lastPacket->strBuf.append(pcData, iLen);
_lastPacket->bodySize = _lastPacket->strBuf.size();
}
break;
default:
break;
}
}
void H264RtmpEncoder::makeVideoConfigPkt() {
int8_t flags = 7; //h.264
flags |= (FLV_KEY_FRAME << 4);
bool is_config = true;
RtmpPacket::Ptr rtmpPkt = ResourcePoolHelper<RtmpPacket>::obtainObj();
rtmpPkt->strBuf.clear();
//////////header
rtmpPkt->strBuf.push_back(flags);
rtmpPkt->strBuf.push_back(!is_config);
rtmpPkt->strBuf.append("\x0\x0\x0", 3);
////////////sps
rtmpPkt->strBuf.push_back(1); // version
//DebugL<<hexdump(_sps.data(), _sps.size());
rtmpPkt->strBuf.push_back(_sps[1]); // profile
rtmpPkt->strBuf.push_back(_sps[2]); // compat
rtmpPkt->strBuf.push_back(_sps[3]); // level
rtmpPkt->strBuf.push_back(0xff); // 6 bits reserved + 2 bits nal size length - 1 (11)
rtmpPkt->strBuf.push_back(0xe1); // 3 bits reserved + 5 bits number of sps (00001)
uint16_t size = _sps.size();
size = htons(size);
rtmpPkt->strBuf.append((char *) &size, 2);
rtmpPkt->strBuf.append(_sps);
/////////////pps
rtmpPkt->strBuf.push_back(1); // version
size = _pps.size();
size = htons(size);
rtmpPkt->strBuf.append((char *) &size, 2);
rtmpPkt->strBuf.append(_pps);
rtmpPkt->bodySize = rtmpPkt->strBuf.size();
rtmpPkt->chunkId = CHUNK_VIDEO;
rtmpPkt->streamId = STREAM_MEDIA;
rtmpPkt->timeStamp = 0;
rtmpPkt->typeId = MSG_VIDEO;
RtmpCodec::inputRtmp(rtmpPkt, false);
}
}//namespace mediakit

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/*
* MIT License
*
* Copyright (c) 2016-2019 xiongziliang <771730766@qq.com>
*
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef ZLMEDIAKIT_H264RTMPCODEC_H
#define ZLMEDIAKIT_H264RTMPCODEC_H
#include "Rtmp/RtmpCodec.h"
#include "Extension/Track.h"
#include "Util/ResourcePool.h"
#include "Extension/H264.h"
using namespace toolkit;
namespace mediakit{
/**
* h264 Rtmp解码类
*/
class H264RtmpDecoder : public RtmpCodec ,public ResourcePoolHelper<H264Frame> {
public:
typedef std::shared_ptr<H264RtmpDecoder> Ptr;
H264RtmpDecoder();
~H264RtmpDecoder() {}
/**
* 输入264 Rtmp包
* @param rtmp Rtmp包
* @param key_pos 此参数忽略之
*/
bool inputRtmp(const RtmpPacket::Ptr &rtmp, bool key_pos = true) override;
TrackType getTrackType() const override{
return TrackVideo;
}
CodecId getCodecId() const override{
return CodecH264;
}
protected:
bool decodeRtmp(const RtmpPacket::Ptr &Rtmp);
void onGetH264_l(const char *pcData, int iLen, uint32_t dts,uint32_t pts);
void onGetH264(const char *pcData, int iLen, uint32_t dts,uint32_t pts);
H264Frame::Ptr obtainFrame();
protected:
H264Frame::Ptr _h264frame;
string _sps;
string _pps;
};
/**
* 264 Rtmp打包类
*/
class H264RtmpEncoder : public H264RtmpDecoder, public ResourcePoolHelper<RtmpPacket> {
public:
typedef std::shared_ptr<H264RtmpEncoder> Ptr;
/**
* 构造函数，track可以为空，此时则在inputFrame时输入sps pps
* 如果track不为空且包含sps pps信息，
* 那么inputFrame时可以不输入sps pps
* @param track
*/
H264RtmpEncoder(const Track::Ptr &track);
~H264RtmpEncoder() {}
/**
* 输入264帧，可以不带sps pps
* @param frame 帧数据
*/
void inputFrame(const Frame::Ptr &frame) override;
private:
void makeVideoConfigPkt();
private:
H264Track::Ptr _track;
bool _gotSpsPps = false;
RtmpPacket::Ptr _lastPacket;
};
}//namespace mediakit
#endif //ZLMEDIAKIT_H264RTMPCODEC_H

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/*
* MIT License
*
* Copyright (c) 2016-2019 xiongziliang <771730766@qq.com>
* Copyright (c) 2019 火宣 <459502659@qq.com>
*
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "H264RtpCodec.h"
namespace mediakit{
typedef struct {
unsigned forbidden_zero_bit :1;
unsigned nal_ref_idc :2;
unsigned type :5;
} NALU;
typedef struct {
unsigned S :1;
unsigned E :1;
unsigned R :1;
unsigned type :5;
} FU;
static bool MakeNalu(uint8_t in, NALU &nal) {
nal.forbidden_zero_bit = in >> 7;
if (nal.forbidden_zero_bit) {
return false;
}
nal.nal_ref_idc = (in & 0x60) >> 5;
nal.type = in & 0x1f;
return true;
}
static bool MakeFU(uint8_t in, FU &fu) {
fu.S = in >> 7;
fu.E = (in >> 6) & 0x01;
fu.R = (in >> 5) & 0x01;
fu.type = in & 0x1f;
if (fu.R != 0) {
return false;
}
return true;
}
H264RtpDecoder::H264RtpDecoder() {
_h264frame = obtainFrame();
}
H264Frame::Ptr H264RtpDecoder::obtainFrame() {
//从缓存池重新申请对象，防止覆盖已经写入环形缓存的对象
auto frame = ResourcePoolHelper<H264Frame>::obtainObj();
frame->buffer.clear();
frame->iPrefixSize = 4;
return frame;
}
bool H264RtpDecoder::inputRtp(const RtpPacket::Ptr &rtp, bool key_pos) {
key_pos = decodeRtp(rtp);
RtpCodec::inputRtp(rtp, key_pos);
return key_pos;
}
bool H264RtpDecoder::decodeRtp(const RtpPacket::Ptr &rtppack) {
/**
* h264帧类型
* Type==1:P/B frame
* Type==5:IDR frame
* Type==6:SEI frame
* Type==7:SPS frame
* Type==8:PPS frame
*/
const uint8_t *frame = (uint8_t *) rtppack->data() + rtppack->offset;
int length = rtppack->size() - rtppack->offset;
NALU nal;
MakeNalu(*frame, nal);
if (nal.type >= 0 && nal.type < 24) {
//a full frame
_h264frame->buffer.assign("\x0\x0\x0\x1", 4);
_h264frame->buffer.append((char *)frame, length);
_h264frame->type = nal.type;
_h264frame->timeStamp = rtppack->timeStamp;
_h264frame->sequence = rtppack->sequence;
auto isIDR = _h264frame->type == H264Frame::NAL_IDR;
onGetH264(_h264frame);
return (isIDR); //i frame
}
switch (nal.type){
case 24:{
// 24 STAP-A 单一时间的组合包
bool haveIDR = false;
auto ptr = frame + 1;
while(true){
int off = ptr - frame;
if (off >= length) {
break;
}
//获取当前nalu的大小
uint16_t len = *ptr++;
len <<= 8;
len |= *ptr++;
if (off + len > length) {
break;
}
if(len >= 10){
//过小的帧丢弃
NALU nal;
MakeNalu(ptr[0], nal);
_h264frame->buffer.assign("\x0\x0\x0\x1", 4);
_h264frame->buffer.append((char *)ptr, len);
_h264frame->type = nal.type;
_h264frame->timeStamp = rtppack->timeStamp;
_h264frame->sequence = rtppack->sequence;
if(nal.type == H264Frame::NAL_IDR){
haveIDR = true;
}
onGetH264(_h264frame);
}
ptr += len;
}
return haveIDR;
}
case 28:{
//FU-A
FU fu;
MakeFU(frame[1], fu);
if (fu.S == 1) {
//FU-A start
char tmp = (nal.forbidden_zero_bit << 7 | nal.nal_ref_idc << 5 | fu.type);
_h264frame->buffer.assign("\x0\x0\x0\x1", 4);
_h264frame->buffer.push_back(tmp);
_h264frame->buffer.append((char *)frame + 2, length - 2);
_h264frame->type = fu.type;
_h264frame->timeStamp = rtppack->timeStamp;
_h264frame->sequence = rtppack->sequence;
return (_h264frame->type == H264Frame::NAL_IDR); //i frame
}
if (rtppack->sequence != (uint16_t)(_h264frame->sequence + 1)) {
_h264frame->buffer.clear();
WarnL << "丢包,帧废弃:" << rtppack->sequence << "," << _h264frame->sequence;
return false;
}
_h264frame->sequence = rtppack->sequence;
if (fu.E == 1) {
//FU-A end
_h264frame->buffer.append((char *)frame + 2, length - 2);
_h264frame->timeStamp = rtppack->timeStamp;
auto isIDR = _h264frame->type == H264Frame::NAL_IDR;
onGetH264(_h264frame);
return isIDR;
}
//FU-A mid
_h264frame->buffer.append((char *)frame + 2, length - 2);
return false;
}
default:{
// 29 FU-B 单NAL单元B模式
// 25 STAP-B 单一时间的组合包
// 26 MTAP16 多个时间的组合包
// 27 MTAP24 多个时间的组合包
// 0 udef
// 30 udef
// 31 udef
WarnL << "不支持的rtp类型:" << (int)nal.type << " " << rtppack->sequence;
return false;
}
}
}
void H264RtpDecoder::onGetH264(const H264Frame::Ptr &frame) {
//写入环形缓存
auto lastSeq = _h264frame->sequence;
RtpCodec::inputFrame(frame);
_h264frame = obtainFrame();
_h264frame->sequence = lastSeq;
}
////////////////////////////////////////////////////////////////////////
H264RtpEncoder::H264RtpEncoder(uint32_t ui32Ssrc,
uint32_t ui32MtuSize,
uint32_t ui32SampleRate,
uint8_t ui8PlayloadType,
uint8_t ui8Interleaved) :
RtpInfo(ui32Ssrc,
ui32MtuSize,
ui32SampleRate,
ui8PlayloadType,
ui8Interleaved) {
}
void H264RtpEncoder::inputFrame(const Frame::Ptr &frame) {
RtpCodec::inputFrame(frame);
GET_CONFIG(uint32_t,cycleMS,Rtp::kCycleMS);
auto pcData = frame->data() + frame->prefixSize();
auto uiStamp = frame->stamp();
auto iLen = frame->size() - frame->prefixSize();
unsigned char naluType = H264_TYPE(pcData[0]); //获取NALU的5bit 帧类型
uiStamp %= cycleMS;
int iSize = _ui32MtuSize - 2;
if (iLen > iSize) { //超过MTU
const unsigned char s_e_r_Start = 0x80;
const unsigned char s_e_r_Mid = 0x00;
const unsigned char s_e_r_End = 0x40;
//获取帧头数据，1byte
unsigned char nal_ref_idc = *((unsigned char *) pcData) & 0x60; //获取NALU的2bit 帧重要程度 00 可以丢 11不能丢
//nal_ref_idc = 0x60;
//组装FU-A帧头数据 2byte
unsigned char f_nri_type = nal_ref_idc + 28;//F为0 1bit,nri上面获取到2bit,28为FU-A分片类型5bit
unsigned char s_e_r_type = naluType;
bool bFirst = true;
bool mark = false;
int nOffset = 1;
while (!mark) {
if (iLen < nOffset + iSize) { //是否拆分结束
iSize = iLen - nOffset;
mark = true;
s_e_r_type = s_e_r_End + naluType;
} else if (bFirst) {
s_e_r_type = s_e_r_Start + naluType;
} else {
s_e_r_type = s_e_r_Mid + naluType;
}
memcpy(_aucSectionBuf, &f_nri_type, 1);
memcpy(_aucSectionBuf + 1, &s_e_r_type, 1);
memcpy(_aucSectionBuf + 2, (unsigned char *) pcData + nOffset, iSize);
nOffset += iSize;
makeH264Rtp(naluType,_aucSectionBuf, iSize + 2, mark,bFirst, uiStamp);
bFirst = false;
}
} else {
makeH264Rtp(naluType,pcData, iLen, true, true, uiStamp);
}
}
void H264RtpEncoder::makeH264Rtp(int nal_type,const void* data, unsigned int len, bool mark, bool first_packet, uint32_t uiStamp) {
RtpCodec::inputRtp(makeRtp(getTrackType(),data,len,mark,uiStamp),first_packet && nal_type == H264Frame::NAL_IDR);
}
}//namespace mediakit

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/*
* MIT License
*
* Copyright (c) 2016-2019 xiongziliang <771730766@qq.com>
*
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef ZLMEDIAKIT_H264RTPCODEC_H
#define ZLMEDIAKIT_H264RTPCODEC_H
#include "Rtsp/RtpCodec.h"
#include "Util/ResourcePool.h"
#include "Extension/H264.h"
using namespace toolkit;
namespace mediakit{
/**
* h264 rtp解码类
*/
class H264RtpDecoder : public RtpCodec , public ResourcePoolHelper<H264Frame> {
public:
typedef std::shared_ptr<H264RtpDecoder> Ptr;
H264RtpDecoder();
~H264RtpDecoder() {}
/**
* 输入264 rtp包
* @param rtp rtp包
* @param key_pos 此参数忽略之
*/
bool inputRtp(const RtpPacket::Ptr &rtp, bool key_pos = true) override;
TrackType getTrackType() const override{
return TrackVideo;
}
CodecId getCodecId() const override{
return CodecH264;
}
private:
bool decodeRtp(const RtpPacket::Ptr &rtp);
void onGetH264(const H264Frame::Ptr &frame);
H264Frame::Ptr obtainFrame();
private:
H264Frame::Ptr _h264frame;
};
/**
* 264 rtp打包类
*/
class H264RtpEncoder : public H264RtpDecoder ,public RtpInfo{
public:
typedef std::shared_ptr<H264RtpEncoder> Ptr;
/**
* @param ui32Ssrc ssrc
* @param ui32MtuSize mtu大小
* @param ui32SampleRate 采样率，强制为90000
* @param ui8PlayloadType pt类型
* @param ui8Interleaved rtsp interleaved
*/
H264RtpEncoder(uint32_t ui32Ssrc,
uint32_t ui32MtuSize = 1400,
uint32_t ui32SampleRate = 90000,
uint8_t ui8PlayloadType = 96,
uint8_t ui8Interleaved = TrackVideo * 2);
~H264RtpEncoder() {}
/**
* 输入264帧
* @param frame 帧数据，必须
*/
void inputFrame(const Frame::Ptr &frame) override;
private:
void makeH264Rtp(int nal_type,const void *pData, unsigned int uiLen, bool bMark, bool first_packet, uint32_t uiStamp);
private:
unsigned char _aucSectionBuf[1600];
};
}//namespace mediakit{
#endif //ZLMEDIAKIT_H264RTPCODEC_H

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/*
* MIT License
*
* Copyright (c) 2016-2019 xiongziliang <771730766@qq.com>
*
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "H265RtpCodec.h"
namespace mediakit{
//41
//42 0 1
//43 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
//44 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
//45 |F| Type | LayerId | TID |
//46 +-------------+-----------------+
//48 F = 0
//49 Type = 49 (fragmentation unit (FU))
//50 LayerId = 0
//51 TID = 1
//56 /*
//57 create the FU header
//58
//59 0 1 2 3 4 5 6 7
//60 +-+-+-+-+-+-+-+-+
//61 |S|E| FuType |
//62 +---------------+
//63
//64 S = variable
//65 E = variable
//66 FuType = NAL unit type
//67
typedef struct {
unsigned S :1;
unsigned E :1;
unsigned type :6;
} FU;
static void MakeFU(uint8_t in, FU &fu) {
fu.S = in >> 7;
fu.E = (in >> 6) & 0x01;
fu.type = in & 0x3f;
}
H265RtpDecoder::H265RtpDecoder() {
_h265frame = obtainFrame();
}
H265Frame::Ptr H265RtpDecoder::obtainFrame() {
//从缓存池重新申请对象，防止覆盖已经写入环形缓存的对象
auto frame = ResourcePoolHelper<H265Frame>::obtainObj();
frame->buffer.clear();
frame->iPrefixSize = 4;
return frame;
}
bool H265RtpDecoder::inputRtp(const RtpPacket::Ptr &rtp, bool key_pos) {
key_pos = decodeRtp(rtp);
RtpCodec::inputRtp(rtp, key_pos);
return key_pos;
}
bool H265RtpDecoder::decodeRtp(const RtpPacket::Ptr &rtppack) {
const uint8_t *frame = (uint8_t *) rtppack->data() + rtppack->offset;
int length = rtppack->size() - rtppack->offset;
int nal = H265_TYPE(frame[0]);
if (nal > 50){
WarnL << "不支持该类型的265 RTP包" << nal;
return false; // packet discard, Unsupported (HEVC) NAL type
}
switch (nal) {
case 50:
case 48: // aggregated packet (AP) - with two or more NAL units
WarnL << "不支持该类型的265 RTP包" << nal;
return false;
case 49: {
// fragmentation unit (FU)
FU fu;
MakeFU(frame[2], fu);
if (fu.S == 1) {
//FU-A start
_h265frame->buffer.assign("\x0\x0\x0\x1", 4);
_h265frame->buffer.push_back(fu.type << 1);
_h265frame->buffer.push_back(0x01);
_h265frame->buffer.append((char *) frame + 3, length - 3);
_h265frame->type = fu.type;
_h265frame->timeStamp = rtppack->timeStamp;
_h265frame->sequence = rtppack->sequence;
return (_h265frame->keyFrame()); //i frame
}
if (rtppack->sequence != (uint16_t) (_h265frame->sequence + 1)) {
_h265frame->buffer.clear();
WarnL << "丢包,帧废弃:" << rtppack->sequence << "," << _h265frame->sequence;
return false;
}
_h265frame->sequence = rtppack->sequence;
if (fu.E == 1) {
//FU-A end
_h265frame->buffer.append((char *) frame + 3, length - 3);
_h265frame->timeStamp = rtppack->timeStamp;
auto isIDR = _h265frame->keyFrame();
onGetH265(_h265frame);
return isIDR;
}
//FU-A mid
_h265frame->buffer.append((char *) frame + 3, length - 3);
return false;
}
default: // 4.4.1. Single NAL Unit Packets (p24)
//a full frame
_h265frame->buffer.assign("\x0\x0\x0\x1", 4);
_h265frame->buffer.append((char *)frame, length);
_h265frame->type = nal;
_h265frame->timeStamp = rtppack->timeStamp;
_h265frame->sequence = rtppack->sequence;
auto isIDR = _h265frame->keyFrame();
onGetH265(_h265frame);
return (isIDR); //i frame
}
}
void H265RtpDecoder::onGetH265(const H265Frame::Ptr &frame) {
//写入环形缓存
auto lastSeq = _h265frame->sequence;
RtpCodec::inputFrame(frame);
_h265frame = obtainFrame();
_h265frame->sequence = lastSeq;
}
////////////////////////////////////////////////////////////////////////
H265RtpEncoder::H265RtpEncoder(uint32_t ui32Ssrc,
uint32_t ui32MtuSize,
uint32_t ui32SampleRate,
uint8_t ui8PlayloadType,
uint8_t ui8Interleaved) :
RtpInfo(ui32Ssrc,
ui32MtuSize,
ui32SampleRate,
ui8PlayloadType,
ui8Interleaved) {
}
void H265RtpEncoder::inputFrame(const Frame::Ptr &frame) {
RtpCodec::inputFrame(frame);
GET_CONFIG(uint32_t,cycleMS,Rtp::kCycleMS);
uint8_t *pcData = (uint8_t*)frame->data() + frame->prefixSize();
auto uiStamp = frame->stamp();
auto iLen = frame->size() - frame->prefixSize();
unsigned char naluType = H265_TYPE(pcData[0]); //获取NALU的5bit 帧类型
uiStamp %= cycleMS;
int maxSize = _ui32MtuSize - 3;
if (iLen > maxSize) { //超过MTU
//获取帧头数据，1byte
unsigned char s_e_type;
bool bFirst = true;
bool mark = false;
int nOffset = 2;
while (!mark) {
if (iLen < nOffset + maxSize) { //是否拆分结束
maxSize = iLen - nOffset;
mark = true;
s_e_type = 1 << 6 | naluType;
} else if (bFirst) {
s_e_type = 1 << 7 | naluType;
} else {
s_e_type = naluType;
}
//FU type
_aucSectionBuf[0] = 49 << 1;
_aucSectionBuf[1] = 1;
_aucSectionBuf[2] = s_e_type;
memcpy(_aucSectionBuf + 3, pcData + nOffset, maxSize);
nOffset += maxSize;
makeH265Rtp(naluType,_aucSectionBuf, maxSize + 3, mark,bFirst, uiStamp);
bFirst = false;
}
} else {
makeH265Rtp(naluType,pcData, iLen, true, true, uiStamp);
}
}
void H265RtpEncoder::makeH265Rtp(int nal_type,const void* data, unsigned int len, bool mark, bool first_packet, uint32_t uiStamp) {
RtpCodec::inputRtp(makeRtp(getTrackType(),data,len,mark,uiStamp),first_packet && H265Frame::isKeyFrame(nal_type));
}
}//namespace mediakit

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src/Extension/H265RtpCodec.h Normal file
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/*
* MIT License
*
* Copyright (c) 2016-2019 xiongziliang <771730766@qq.com>
*
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef ZLMEDIAKIT_H265RTPCODEC_H
#define ZLMEDIAKIT_H265RTPCODEC_H
#include "Rtsp/RtpCodec.h"
#include "Util/ResourcePool.h"
#include "Extension/H265.h"
using namespace toolkit;
namespace mediakit{
/**
* h265 rtp解码类
*/
class H265RtpDecoder : public RtpCodec , public ResourcePoolHelper<H265Frame> {
public:
typedef std::shared_ptr<H265RtpDecoder> Ptr;
H265RtpDecoder();
~H265RtpDecoder() {}
/**
* 输入265 rtp包
* @param rtp rtp包
* @param key_pos 此参数忽略之
*/
bool inputRtp(const RtpPacket::Ptr &rtp, bool key_pos = true) override;
TrackType getTrackType() const override{
return TrackVideo;
}
CodecId getCodecId() const override{
return CodecH265;
}
private:
bool decodeRtp(const RtpPacket::Ptr &rtp);
void onGetH265(const H265Frame::Ptr &frame);
H265Frame::Ptr obtainFrame();
private:
H265Frame::Ptr _h265frame;
};
/**
* 265 rtp打包类
*/
class H265RtpEncoder : public H265RtpDecoder ,public RtpInfo{
public:
typedef std::shared_ptr<H265RtpEncoder> Ptr;
/**
* @param ui32Ssrc ssrc
* @param ui32MtuSize mtu大小
* @param ui32SampleRate 采样率，强制为90000
* @param ui8PlayloadType pt类型
* @param ui8Interleaved rtsp interleaved
*/
H265RtpEncoder(uint32_t ui32Ssrc,
uint32_t ui32MtuSize = 1400,
uint32_t ui32SampleRate = 90000,
uint8_t ui8PlayloadType = 96,
uint8_t ui8Interleaved = TrackVideo * 2);
~H265RtpEncoder() {}
/**
* 输入265帧
* @param frame 帧数据，必须
*/
void inputFrame(const Frame::Ptr &frame) override;
private:
void makeH265Rtp(int nal_type,const void *pData, unsigned int uiLen, bool bMark, bool first_packet,uint32_t uiStamp);
private:
unsigned char _aucSectionBuf[1600];
};
}//namespace mediakit{
#endif //ZLMEDIAKIT_H265RTPCODEC_H