ffmpeg入门之 Tutorial02

02实际是在01的基础上添加了 SDL显示yuv部分，这部分相对独立。

if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER))

  {

    fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());

    exit(1);

  }

screen = SDL_SetVideoMode(pCodecCtx->width, pCodecCtx->height, 0, 0);

// Allocate a place to put our YUV image on that screen

  bmp = SDL_CreateYUVOverlay(pCodecCtx->width,

     pCodecCtx->height,

     SDL_YV12_OVERLAY,

     screen);

SDL_LockYUVOverlay(bmp);

pict.data[0] = bmp->pixels[0];

 pict.data[1] = bmp->pixels[2];

 pict.data[2] = bmp->pixels[1];

SDL_UnlockYUVOverlay(bmp);

 

 rect.x = 0;

 rect.y = 0;

 rect.w = pCodecCtx->width;

 rect.h = pCodecCtx->height;

SDL_DisplayYUVOverlay(bmp, &rect);

SDL_PollEvent(&event);

    switch(event.type)

 {

    case SDL_QUIT:

      SDL_Quit();

      exit(0);

      break;

    default:

      break;

    }

 SDL_Delay(40);