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12. 解决android8.0下opengles不能播放的问题和音频播放的回音问题~1

发布时间：2021-06-12 17:34:00编辑：雪饮阅读（）

 首先呢要在入口cpp/native-lib.cpp中初始化硬解編碼：

#include <jni.h>
#include <string>
#include <android/native_window_jni.h>

#include "FFDemux.h"
#include "XLog.h"
#include "FFDecode.h"
#include "XEGL.h"
#include "XShader.h"
#include "IVideoView.h"
#include "GLVideoView.h"
#include "FFResample.h"
#include "IAudioPlay.h"
#include "SLAudioPlay.h"

class TestObs:public IObserver
{
public:
    void Update(XData d)
    {
        //XLOGI("TestObs Update data size is %d",d.size);
    }
};

IVideoView *view = NULL;
extern "C"
JNIEXPORT
jint JNI_OnLoad(JavaVM *vm,void *res)
{
    FFDecode::InitHard(vm);


    ///////////////////////////////////
    ///测试用代码
    TestObs *tobs = new TestObs();
    IDemux *de = new FFDemux();
    //de->AddObs(tobs);
    de->Open("/sdcard/v1080.mp4");

    IDecode *vdecode = new FFDecode();
    //vdecode->Open(de->GetVPara(), true);
    vdecode->Open(de->GetVPara(), true);

    IDecode *adecode = new FFDecode();
    adecode->Open(de->GetAPara());
    de->AddObs(vdecode);
    de->AddObs(adecode);

    view = new GLVideoView();
    vdecode->AddObs(view);

    IResample *resample = new FFResample();
    XParameter outPara = de->GetAPara();

    resample->Open(de->GetAPara(),outPara);
    adecode->AddObs(resample);

    IAudioPlay *audioPlay = new SLAudioPlay();
    audioPlay->StartPlay(outPara);
    resample->AddObs(audioPlay);


    //vdecode->Open();
    de->Start();
    vdecode->Start();
    adecode->Start();



    return JNI_VERSION_1_4;
}



extern "C"
JNIEXPORT jstring

JNICALL
Java_com_example_xplay_MainActivity_stringFromJNI(
        JNIEnv *env,
        jobject /* this */) {
    std::string hello = "Hello from C++";

    //XLOGI("S begin!");
    //XSleep(3000);
    //XLOGI("S end!");
    //return env->NewStringUTF(hello.c_str());


    //XSleep(3000);
    //de->Stop();
    /*for(;;)
    {
        XData d = de->Read();
        XLOGI("Read data size is %d",d.size);


    }*/

    return env->NewStringUTF(hello.c_str());
}
extern "C"
JNIEXPORT void JNICALL
Java_com_example_xplay_XPlay_InitView(JNIEnv *env, jobject instance, jobject surface) {

    // TODO
    ANativeWindow *win = ANativeWindow_fromSurface(env,surface);
    view->SetRender(win);
    //XEGL::Get()->Init(win);
    //XShader shader;
    //shader.Init();


}

爲了解決8.0opengles不能播放問題，還需要在方法surfaceCreated中setRenderer( this );處理下：XPlay.java:

package com.example.xplay;
 
 import android.content.Context;
 import android.opengl.GLSurfaceView;
 import android.util.AttributeSet;
 import android.view.SurfaceHolder;
 
 import javax.microedition.khronos.egl.EGLConfig;
 import javax.microedition.khronos.opengles.GL10;
 
 /**
  * Created by Administrator on 2018-03-04.
  */
 
 public class XPlay extends GLSurfaceView implements SurfaceHolder.Callback,GLSurfaceView.Renderer {
     public XPlay(Context context, AttributeSet attrs) {
         super( context, attrs );
     }
     @Override
     public void surfaceCreated(SurfaceHolder holder)
     {
         //初始化opengl egl 显示
         InitView(holder.getSurface());
 
         //android 8.0 需要设置
         setRenderer( this );
 
 
         //只有在绘制数据改变时才绘制view，可以防止GLSurfaceView帧重绘
         //setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);
     }
 
     @Override
     public void surfaceChanged(SurfaceHolder var1, int var2, int var3, int var4)
     {
 
     }
 
     @Override
     public void surfaceDestroyed(SurfaceHolder var1)
     {
 
     }
     public native void InitView(Object surface);
 
 
     @Override
     public void onSurfaceCreated(GL10 gl10, EGLConfig eglConfig) {
 
     }
 
     @Override
     public void onSurfaceChanged(GL10 gl10, int i, int i1) {
 
     }
 
     @Override
     public void onDrawFrame(GL10 gl10) {
 
     }
 }

雖然最後還是黑屏

但是老師測試的另外一個視頻是可以的是那個1080.mp4