CA_Zoomix_cheng _an

他的代码

YUV 转换

• 硬件摄像头nv21 转yuv420
• 摄像头旋转/前后摄像头切换

/* loaded from: classes.dex */
public class LibYUVConvert {
    public native byte[] LibNV21toYUV420(byte[] srcYUV, int iSrcWidth, int iSrcHeight);

    public native byte[] LibYUV420Rotate270(byte[] srcYUV, int iSrcWidth, int iSrcHeight);

    public native byte[] LibYUV420Rotate90(byte[] srcYUV, int iSrcWidth, int iSrcHeight);

    static {
        System.loadLibrary("AvcEncoder");
    }
}

rtmp 部分

• 处理音频

public class FdkAacEncode {
    public native void FdkAacDeInit(int handle);

    public native byte[] FdkAacEncode(int handle, byte[] buffer);

    public native int FdkAacInit(int iSampleRate, int iChannel);

    static {
        System.loadLibrary("AvcEncoder");
    }
}

• rtmp 连接/推流

public class RtmpSession {
    public native int RtmpConnect(String rtmpUrl);

    public native void RtmpDisconnect(int handle);

    public native int RtmpIsConnect(int handle);

    public native int RtmpSendAudioData(int handle, byte[] audioData, long lLen);

    public native int RtmpSendVideoData(int handle, byte[] videoData, long lLen);

    static {
        System.loadLibrary("AvcEncoder");
        System.loadLibrary("rtmp");
    }
}

h264 编码

public class OpenH264Encoder {
    public static final int YUV12_TYPE = 24;
    public static final int YUV420_TYPE = 23;

    public native void DeInitEncode(int iHandle);

    public native byte[] EncodeH264frame(int iHandle, byte[] inbuf_ptr);

    public native int InitEncode(int nImgWidth, int nImgHight, int nBitrate, int Frmrate, int iYUVType);

    static {
        System.loadLibrary("AvcEncoder");
    }
}

编程语言

• kotlin
• 协程
• socket 连接

视频混合

• MediaCodec
• VideoRecMuxer -----> MediaMuxer
• MediaFormat ----> audio/raw