完成AAC RTMP编解码类

src/RTP/AACRtpCodec.cpp

@@ -114,12 +114,12 @@ bool AACRtpDecoder::inputRtp(const RtpPacket::Ptr &rtppack, bool key_pos) {
         m_adts->sequence = rtppack->sequence;
         m_adts->timeStamp = rtppack->timeStamp * (1000.0 / m_sampleRate);
         writeAdtsHeader(*m_adts, m_adts->buffer);
-        onGetAdts(m_adts);
+        onGetAAC(m_adts);
     }
     return false;
 }
 
-void AACRtpDecoder::onGetAdts(const AACFrame::Ptr &frame) {
+void AACRtpDecoder::onGetAAC(const AACFrame::Ptr &frame) {
     //写入环形缓存
     RtpCodec::inputFrame(frame);
     m_adts = obtainFrame();

src/RTP/AACRtpCodec.h

@@ -35,7 +35,7 @@ public:
         return CodecAAC;
     }
 private:
-    void onGetAdts(const AACFrame::Ptr &frame);
+    void onGetAAC(const AACFrame::Ptr &frame);
     AACFrame::Ptr obtainFrame();
 private:
     AACFrame::Ptr m_adts;

src/Rtmp/RtmpToRtspMediaSource.cpp

@@ -55,7 +55,7 @@ void RtmpToRtspMediaSource::onGetH264(const H264Frame &frame) {
 		m_pRtpMaker_h264->makeRtp(frame.data() + 4, frame.size() - 4, frame.timeStamp);
 	}
 }
-inline void RtmpToRtspMediaSource::onGetAdts(const AACFrame &frame) {
+inline void RtmpToRtspMediaSource::onGetAAC(const AACFrame &frame) {
 	if(m_pRecorder){
         m_pRecorder->inputAAC((char *) frame.buffer, frame.aac_frame_length, frame.timeStamp);
     }

src/Rtmp/RtmpToRtspMediaSource.h

@@ -69,7 +69,7 @@ public:
 			m_pRecorder.reset(new MediaRecorder(getVhost(),getApp(),getId(),m_pParser,m_bEnableHls,m_bEnableMp4));
 			//todo(xzl) 修复此处
 
-//			m_pParser->setOnAudioCB(std::bind(&RtmpToRtspMediaSource::onGetAdts, this, placeholders::_1));
+//			m_pParser->setOnAudioCB(std::bind(&RtmpToRtspMediaSource::onGetAAC, this, placeholders::_1));
 //			m_pParser->setOnVideoCB(std::bind(&RtmpToRtspMediaSource::onGetH264, this, placeholders::_1));
 		} catch (exception &ex) {
 			WarnL << ex.what();
@@ -96,7 +96,7 @@ private:
     bool m_bEnableHls;
     bool m_bEnableMp4;
 	void onGetH264(const H264Frame &frame);
-	void onGetAdts(const AACFrame &frame);
+	void onGetAAC(const AACFrame &frame);
 	void makeSDP();
 };
 

src/RtmpCodec/AACRtmpCodec.cpp

+//
+// Created by xzl on 2018/10/24.
+//
+
+#include <Player/Player.h>
+#include "AACRtmpCodec.h"
+
+namespace ZL{
+namespace Rtmp {
+
+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();
+}
+/////////////////////////////////////////////////////////////////////////////////////
+
+void AACRtmpEncoder::inputFrame(const Frame::Ptr &frame) {
+    RtmpCodec::inputFrame(frame);
+    if(frame->prefixSize() == 7 && _aac_cfg.empty()){
+        //包含adts头
+        _aac_cfg = makeAdtsConfig(reinterpret_cast<const uint8_t *>(frame->data()));
+        makeAudioConfigPkt();
+    }
+}
+
+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
+
+    uint8_t m_ui8AudioFlags = (flvAudioType << 4) | (flvSampleRate << 2) | (flvSampleBit << 1) | flvStereoOrMono;
+
+    RtmpPacket::Ptr rtmpPkt = ResourcePoolHelper<RtmpPacket>::obtainObj();
+    //////////header
+    uint8_t is_config = true;
+    rtmpPkt->strBuf.push_back(m_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;
+    inputRtmp(rtmpPkt, true);
+}
+
+
+
+
+
+
+
+
+
+
+
+}//namespace Rtmp
+}//namespace ZL
\ No newline at end of file

src/RtmpCodec/AACRtmpCodec.h

+//
+// Created by xzl on 2018/10/24.
+//
+
+#ifndef ZLMEDIAKIT_AACRTMPCODEC_H
+#define ZLMEDIAKIT_AACRTMPCODEC_H
+
+#include "RtmpCodec.h"
+
+namespace ZL{
+namespace Rtmp {
+/**
+ * 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;
+
+    AACRtmpEncoder();
+    ~AACRtmpEncoder() {}
+
+    /**
+     * 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 makeAudioConfigPkt();
+};
+
+}//namespace Rtmp
+}//namespace ZL
+
+#endif //ZLMEDIAKIT_AACRTMPCODEC_H

src/RtmpCodec/H264RtmpCodec.cpp

@@ -26,12 +26,12 @@ bool H264RtmpDecoder::inputRtmp(const RtmpPacket::Ptr &rtmp, bool 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
-        m_strSPS = pkt->getH264SPS();
-        m_strPPS  = pkt->getH264PPS();
+        m_sps = pkt->getH264SPS();
+        m_pps  = pkt->getH264PPS();
         return false;
     }
 
-    if (m_strSPS.size()) {
+    if (m_sps.size()) {
         uint32_t iTotalLen = pkt->strBuf.size();
         uint32_t iOffset = 5;
         while(iOffset + 4 < iTotalLen){
@@ -54,8 +54,8 @@ inline void H264RtmpDecoder::onGetH264_l(const char* pcData, int iLen, uint32_t
     switch (pcData[0] & 0x1F) {
         case 5: {
             //I frame
-            onGetH264(m_strSPS.data(), m_strSPS.length(), ui32TimeStamp);
-            onGetH264(m_strPPS.data(), m_strPPS.length(), ui32TimeStamp);
+            onGetH264(m_sps.data(), m_sps.length(), ui32TimeStamp);
+            onGetH264(m_pps.data(), m_pps.length(), ui32TimeStamp);
         }
         case 1: {
             //I or P or B frame

src/RtmpCodec/H264RtmpCodec.h

@@ -34,15 +34,15 @@ public:
     CodecId getCodecId() const override{
         return CodecH264;
     }
-private:
+protected:
     bool decodeRtmp(const RtmpPacket::Ptr &Rtmp);
     void onGetH264_l(const char *pcData, int iLen, uint32_t ui32TimeStamp);
     void onGetH264(const char *pcData, int iLen, uint32_t ui32TimeStamp);
     H264Frame::Ptr obtainFrame();
-private:
+protected:
     H264Frame::Ptr m_h264frame;
-    string m_strSPS;
-    string m_strPPS;
+    string m_sps;
+    string m_pps;
 };
 
 /**
@@ -62,9 +62,6 @@ public:
     void inputFrame(const Frame::Ptr &frame) override;
 private:
     void makeVideoConfigPkt();
-private:
-    string m_sps;
-    string m_pps;
 };
 
 #endif //ZLMEDIAKIT_H264RTMPCODEC_H

src/Rtsp/RtspToRtmpMediaSource.cpp

@@ -126,7 +126,7 @@ void RtspToRtmpMediaSource::onGetH264(const H264Frame& frame) {
 	rtmpPkt->typeId = MSG_VIDEO;
 	m_pRtmpSrc->onGetMedia(rtmpPkt);
 }
-void RtspToRtmpMediaSource::onGetAdts(const AACFrame& frame) {
+void RtspToRtmpMediaSource::onGetAAC(const AACFrame& frame) {
 	if(m_pRecorder){
 		m_pRecorder->inputAAC((char *) frame.buffer, frame.aac_frame_length, frame.timeStamp);
 	}

src/Rtsp/RtspToRtmpMediaSource.h

@@ -55,7 +55,7 @@ public:
 			m_pParser.reset(new RtpParser(strSdp));
             m_pRecorder.reset(new MediaRecorder(getVhost(),getApp(),getId(),m_pParser,m_bEnableHls,m_bEnableMp4));
 			//todo(xzl) 修复此处
-//			m_pParser->setOnAudioCB( std::bind(&RtspToRtmpMediaSource::onGetAdts, this, placeholders::_1));
+//			m_pParser->setOnAudioCB( std::bind(&RtspToRtmpMediaSource::onGetAAC, this, placeholders::_1));
 //			m_pParser->setOnVideoCB( std::bind(&RtspToRtmpMediaSource::onGetH264, this, placeholders::_1));
 			makeMetaData();
 		} catch (exception &ex) {
@@ -94,7 +94,7 @@ public:
 
 protected:
 	void onGetH264(const H264Frame &frame);
-	void onGetAdts(const AACFrame &frame);
+	void onGetAAC(const AACFrame &frame);
 private:
 	void makeVideoConfigPkt();
 	void makeAudioConfigPkt();