mp4录制支持opus

src/Extension/Opus.cpp

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
+ *
+ * This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
+ *
+ * Use of this source code is governed by MIT license that can be found in the
+ * LICENSE file in the root of the source tree. All contributing project authors
+ * may be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "Opus.h"
+
+namespace mediakit{
+
+Sdp::Ptr OpusTrack::getSdp() {
+    if(!ready()){
+        WarnL << getCodecName() << " Track未准备好";
+        return nullptr;
+    }
+    return std::make_shared<OpusSdp>(getAudioSampleRate(), getAudioChannel());
+}
+
+}//namespace mediakit

src/Extension/Opus.h

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+/*
+ * Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
+ *
+ * This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
+ *
+ * Use of this source code is governed by MIT license that can be found in the
+ * LICENSE file in the root of the source tree. All contributing project authors
+ * may be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef ZLMEDIAKIT_OPUS_H
+#define ZLMEDIAKIT_OPUS_H
+
+#include "Frame.h"
+#include "Track.h"
+
+namespace mediakit{
+
+/**
+ * Opus帧
+ */
+class OpusFrame : public FrameImp {
+public:
+    typedef std::shared_ptr<OpusFrame> Ptr;
+
+    OpusFrame(){
+        _codecid = CodecOpus;
+    }
+};
+
+/**
+ * 不可缓存的Opus帧
+ */
+class OpusFrameNoCacheAble : public FrameFromPtr {
+public:
+    typedef std::shared_ptr<OpusFrameNoCacheAble> Ptr;
+
+    OpusFrameNoCacheAble(char *ptr,uint32_t size,uint32_t dts, uint32_t pts = 0,int prefix_size = 0){
+        _ptr = ptr;
+        _size = size;
+        _dts = dts;
+        _prefix_size = prefix_size;
+    }
+
+    CodecId getCodecId() const override{
+        return CodecOpus;
+    }
+
+    bool keyFrame() const override {
+        return false;
+    }
+
+    bool configFrame() const override{
+        return false;
+    }
+};
+
+/**
+ * Opus帧音频通道
+ */
+class OpusTrack : public AudioTrackImp{
+public:
+    typedef std::shared_ptr<OpusTrack> Ptr;
+    OpusTrack(int sample_rate, int channels, int sample_bit) : AudioTrackImp(CodecOpus,sample_rate,channels,sample_bit){}
+
+private:
+    //克隆该Track
+    Track::Ptr clone() override {
+        return std::make_shared<std::remove_reference<decltype(*this)>::type >(*this);
+    }
+    //生成sdp
+    Sdp::Ptr getSdp() override ;
+};
+
+/**
+ * Opus类型SDP
+ */
+class OpusSdp : public Sdp {
+public:
+    /**
+     * 构造opus sdp
+     * @param sample_rate 音频采样率
+     * @param playload_type rtp playload
+     * @param bitrate 比特率
+     */
+    OpusSdp(int sample_rate,
+            int channels,
+            int playload_type = 98,
+            int bitrate = 128) : Sdp(sample_rate,playload_type){
+        _printer << "m=audio 0 RTP/AVP " << playload_type << "\r\n";
+        _printer << "a=rtpmap:" << playload_type << " opus/" << sample_rate  << "/" << channels << "\r\n";
+        _printer << "a=control:trackID=" << (int)TrackAudio << "\r\n";
+    }
+
+    string getSdp() const override {
+        return _printer;
+    }
+
+    CodecId getCodecId() const override {
+        return CodecOpus;
+    }
+private:
+    _StrPrinter _printer;
+};
+
+}//namespace mediakit
+#endif //ZLMEDIAKIT_OPUS_H