应用程序崩溃是由于使用ANativeWindow API的

Question

我打电话，使用ANativeWindow API从一个UI线程Java代码我的本地功能，如下图所示：

MainActivity.this.runOnUiThread(new Runnable() { 

        @Override 
        public void run() { 
         // your stuff to update the UI 
         mainFunction(3,inputFile,outputFile,surface); 
         Log.d(TAG, "Thread executed successfully"); 
        } 
       }); 

然后在本地代码复制，同时从数据rgba缓冲区的位，应用程序是carshing。本机代码片段如下：

void yuv2rgba(UINT8* y,UINT8* u,UINT8* v,int w, int h,FILE *fp_Out_File,jobject surface) 
{ 
    int mem1=w*h,i=0,j=0,k=0; 
__android_log_print(ANDROID_LOG_DEBUG,"MYDECODER","yuv2rgba is entered.....",NULL); 

    JNIEnv *env; 
    ANativeWindow* window; 
    ANativeWindow_Buffer buffer; 
//buffer1: holds the rgba data 
    UINT8 *buffer1=(UINT8*)malloc(sizeof(UINT8)*(4*mem1)); 
    UINT8 *r=(UINT8*)malloc(sizeof(UINT8)*mem1); 
    UINT8 *g=(UINT8*)malloc(sizeof(UINT8)*mem1); 
    UINT8 *b=(UINT8*)malloc(sizeof(UINT8)*mem1); 
    int y1,u1,v1,rcomp,gcomp,bcomp; 

    int getEnvStat = (*g_vm)->GetEnv(g_vm,(void **)&env, JNI_VERSION_1_6); 
    if (getEnvStat == JNI_EDETACHED) { 
    __android_log_print(ANDROID_LOG_DEBUG,"MYAPP","GetEnv: not attached.....",NULL); 
    } 
    else if (getEnvStat == JNI_OK) { 

     __android_log_print(ANDROID_LOG_DEBUG,"MYAPP","getEnvStat == JNI_OK.....",NULL); 
    } 
    else if (getEnvStat == JNI_EVERSION) { 

     __android_log_print(ANDROID_LOG_DEBUG,"MYAPP","GetEnv: version not supported.....",NULL); 
    } 

    __android_log_print(ANDROID_LOG_DEBUG,"MYAPP","computing rgb.....",NULL); 

    for(i=0;i<mem1;++i) 
    { 
     y1=y[i]-16; 
     u1=u[i]-128; 
     v1=v[i]-128; 

     rcomp=((298 * y1) +(409 * v1))>>8; 
     r[i]=(UINT8)((rcomp<0)?0:((rcomp > 255)?255:rcomp)); 

     gcomp=((298 * y1) - (100 *u1) - (208 * v1))>>8; 
     g[i]=(UINT8)((gcomp<0)?0:((gcomp > 255)?255:gcomp)); 
     bcomp=((298 * y1) + (516 * u1))>>8; 
     b[i]=(UINT8)((bcomp<0)?0:((bcomp > 255)?255:bcomp)); 
    } 
    __android_log_print(ANDROID_LOG_DEBUG,"MYAPP","assigning rgba to buffer....",NULL); 
    // Storing the RGB value into a buffer 
    for(i=0,j=0;(i<(mem1*4))&&(j<mem1);i=i+4,++j) 
     { 
     buffer1[i]=r[j]; 
     buffer1[i+1]=g[j]; 
     buffer1[i+2]=b[j]; 
     buffer1[i+3]=0xff; 
     } 
    free(r); 
    free(g); 
    free(b); 
    //fwrite to an output file 
    //fwrite(buffer1,sizeof(UINT8),w*h*3,fp_Out_File); 


    __android_log_print(ANDROID_LOG_DEBUG,"MYAPP","before creating a window.....",NULL); 

    window = ANativeWindow_fromSurface(env, surface); 

    __android_log_print(ANDROID_LOG_DEBUG,"MYAPP","window created.....",NULL); 

    if (ANativeWindow_lock(window, &buffer, NULL) == 0) { 

     memcpy(buffer.bits, buffer1, sizeof(UINT8)*(4*mem1)); 

     __android_log_print(ANDROID_LOG_DEBUG,"MYAPP","memcpy successfull.....",NULL); 

     ANativeWindow_unlockAndPost(window); 

     __android_log_print(ANDROID_LOG_DEBUG,"MYAPP","unlock and post successful..." ,NULL); 
    } 
    ANativeWindow_release(window); 
    __android_log_print(ANDROID_LOG_DEBUG,"MYAPP","release successful.....",NULL); 

    free(buffer1); 
} 

当运行应用程序时，注释后的应用程序崩溃：“窗口中创建......”。与所述的logcat以下消息一起：

02-18 14:46:55.344: I/dalvikvm(2080): threadid=4: reacting to signal 3 
02-18 14:46:55.348: I/dalvikvm(2080): Wrote stack traces to '/data/anr/traces.txt' 

在上面的代码我的目标是使用ANativeWindow API

Answer 1

最后上显示存在于buffer1的RGBA数据到设备屏幕 - 一个大量的后试验和错误 - 我能够弄清楚这次事故。

原因是在上面的代码之前：

if (ANativeWindow_lock(window, &buffer, NULL) == 0) { 

     memcpy(buffer.bits, buffer1, sizeof(UINT8)*(4*mem1)); 

     __android_log_print(ANDROID_LOG_DEBUG,"MYAPP","memcpy successfull.....",NULL); 

     ANativeWindow_unlockAndPost(window); 

     __android_log_print(ANDROID_LOG_DEBUG,"MYAPP","unlock and post successful..." ,NULL); 
    } 

我们需要添加：

ANativeWindow_setBuffersGeometry(window,w,h,WINDOW_FORMAT_RGBA_8888) 

其中，w - >宽度的帧的，h - >高度的帧的，和RGBA格式。