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| static void* invite1()
{
av_register_all();
initSDL();
gtk_widget_show_all(conferencewindow);
if(av_open_input_file(&pFormatCtx1, "2.mpg", NULL, 0,NULL)!=0)
{printf("Couldn't open file");
return NULL; // Couldn't open file
}
// Retrieve stream information
if(av_find_stream_info(pFormatCtx1)<0)
{ printf("Couldn't find stream information");
return NULL; // Couldn't find stream information
}
printf("\n*************************** biterate : %d", pFormatCtx1->bit_rate);
// Dump information about file onto standard error
dump_format(pFormatCtx1, 0, "2.mpg", 0);
// Find the first video stream
videoStream1=-1;
for(i1=0; i1<pFormatCtx1->nb_streams; i1++)
{
if(pFormatCtx1->streams[i1]->codec->codec_type==CODEC_TYPE_VIDEO)
{
videoStream1=i1;
break;
}
}
if(videoStream1==-1)
{ printf("Didn't find a video stream");
return NULL; // Didn't find a video stream
}
printf("\n *****Find the first video stream th2 \n");
// Get a pointer to the codec context for the video stream
pCodecCtx1=pFormatCtx1->streams[videoStream1]->codec;
// Find the decoder for the video stream
pCodec1=avcodec_find_decoder(pCodecCtx1->codec_id);
if(pCodec1==NULL)
{
fprintf(stderr, "Unsupported codec!\n");
return NULL; // Codec not found
}
// Open codec
if(avcodec_open(pCodecCtx1, pCodec1)<0)
return NULL; // Could not open codec
printf("\n *****Open codec th2 \n");
// Allocate video frame
pFrame1=avcodec_alloc_frame();
// Make a screen to put our video
#ifndef __DARWIN__
screen1 = SDL_SetVideoMode(pCodecCtx1->width, pCodecCtx1->height, 0, 0);
#else
screen1 = SDL_SetVideoMode(pCodecCtx1->width, pCodecCtx1->height, 24, 0);
#endif
printf("\n *****screan th2 \n");
if(!screen1)
{
fprintf(stderr, "SDL: could not set video mode - exiting\n");
exit(1);
}
printf("\n *****screan2 th2 \n");
// Allocate a place to put our YUV image on that screen
bmp1 = SDL_CreateYUVOverlay(pCodecCtx1->width,
pCodecCtx1->height,
SDL_YV12_OVERLAY,
screen1);
printf("\n *****bmp th2 \n");
// Read frames and save first five frames to disk
i1=0;
while(av_read_frame(pFormatCtx1, &packet1)>=0)
{ printf("\n *****whileth2 \n");
// Is this a packet from the video stream?
if(packet1.stream_index==videoStream1)
{ printf("\n *****acket from the video stream th2 \n");
// Decode video frame
avcodec_decode_video(pCodecCtx1, pFrame1, &frameFinished1,
packet1.data, packet1.size);
printf("\n *****Decode video frame th2 \n");
// Did we get a video frame?
if(frameFinished1)
{
SDL_LockYUVOverlay(bmp1);
AVPicture pict1;
pict1.data[0] = bmp1->pixels[0];
pict1.data[1] = bmp1->pixels[2];
pict1.data[2] = bmp1->pixels[1];
pict1.linesize[0] = bmp1->pitches[0];
pict1.linesize[1] = bmp1->pitches[2];
pict1.linesize[2] = bmp1->pitches[1];
printf("\n *****pict th2 \n");
// Convert the image into YUV format that SDL uses
int in1=img_convert(&pict1, PIX_FMT_YUV420P,(AVPicture *)pFrame1, pCodecCtx1->pix_fmt, pCodecCtx1->width, pCodecCtx1->height);
SDL_UnlockYUVOverlay(bmp1);
rect1.x = 10;
rect1.y = 250;
rect1.w = pCodecCtx1->width;
rect1.h = pCodecCtx1->height;
printf("\n *****rect th2 \n");
SDL_DisplayYUVOverlay(bmp1, &rect1);
printf("\n *****display th2 \n");
}
}
//Free the packet that was allocated by av_read_frame
av_free_packet(&packet1);
SDL_PollEvent(&event1);
switch(event1.type)
{
case SDL_QUIT:
SDL_Quit();
exit(0);
break;
default:
break;
}
}
// Free the YUV frame
av_free(pFrame1);
// Close the codec
avcodec_close(pCodecCtx1);
// Close the video file
av_close_input_file(pFormatCtx1);
//}
return NULL;
} |
afficher deux videos dans une fenetre sdl
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