ffmpeg +SDL 视频播放实例（目前只能显示视频，没有声音）

环境：

ＯＳ：　Windows 

IDE: VS 2008 

ffmpeg : http://www.bairuitech.com/html/ruanjianxiazai/20080613/98.html

SDL   :   SDL-devel-1.2.15-VC.zip (Visual C++)   http://www.libsdl.org/download-1.2.php

流程图：

源码文件：

// MyTestAll.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
extern "C"
{
#include "libavformat/avformat.h"
#include "libavcodec/avcodec.h"
#include "libswscale/swscale.h"
#include "SDL.h"
}

int _tmain(int argc, _TCHAR* argv[])
{

	char filename[100] = "D:/vs/MyTestAll/mp4.mp4";
	AVFormatContext * pAVFCtx = NULL;
	AVCodecContext * pCodecCtx = NULL ;
	AVCodec * pCodec = NULL ;
	SDL_Surface* surface =NULL;
	UINT videoStream =-1 ;
	SDL_Rect rect;
	SDL_Event even;
	av_register_all();
	if(SDL_Init(SDL_INIT_TIMER | SDL_INIT_AUDIO | SDL_INIT_VIDEO))
	{
		cout <<SDL_GetError()<<endl;
		exit(-1);
	}

	if(av_open_input_file(&pAVFCtx,filename ,NULL,0,NULL))
	{
		cout << "open file: "<<filename<<"error!"<<endl;
		exit(-1);
	}

	if(av_find_stream_info(pAVFCtx)<0)
	{
		exit(-1);
	}
	dump_format(pAVFCtx,0,filename,0);

	for(UINT i=0;i<=pAVFCtx->nb_streams;i++)
	{
		if(pAVFCtx->streams[i]->codec->codec_type == CODEC_TYPE_VIDEO )
		{
			videoStream = i;
			break;
		}
	}

	if(videoStream == -1)
		exit(-1);

	pCodecCtx = pAVFCtx->streams[videoStream]->codec ;	
	pCodec = avcodec_find_decoder(pCodecCtx->codec_id);
	if(avcodec_open(pCodecCtx,pCodec)<0)
		exit(-1);
	surface = SDL_SetVideoMode(pCodecCtx->width,pCodecCtx->height,0,0);
	if(surface == NULL)
		exit(-1);
	SDL_Overlay * pOverlay = SDL_CreateYUVOverlay(pCodecCtx->width,pCodecCtx->height ,SDL_YV12_OVERLAY,surface);


	AVFrame * pFrame;
	pFrame = avcodec_alloc_frame();

	AVPacket packet ;
	int hasVideo ;
	while(av_read_frame(pAVFCtx,&packet ) == 0) 
	{
		if(packet.stream_index ==videoStream)
		{
			avcodec_decode_video(pCodecCtx,pFrame,&hasVideo,packet.data,packet.size);
			if(hasVideo)
			{
				
				SDL_LockYUVOverlay(pOverlay);
				AVPicture picture;
				picture.data[0] = pOverlay->pixels[0];
				picture.data[1] = pOverlay->pixels[2];
				picture.data[2] = pOverlay->pixels[1];

				picture.linesize[0] = pOverlay->pitches[0];
				picture.linesize[1] = pOverlay->pitches[2];
				picture.linesize[2] = pOverlay->pitches[1];

				SwsContext *pSwsCtx = sws_getContext(pCodecCtx->width,pCodecCtx->height,pCodecCtx->pix_fmt,pCodecCtx->width,pCodecCtx->height,PIX_FMT_YUV420P, SWS_BICUBIC,NULL,NULL,NULL);
				sws_scale(pSwsCtx,pFrame->data,pFrame->linesize,0,pCodecCtx->height,picture.data,picture.linesize);

				SDL_UnlockYUVOverlay(pOverlay);
				rect.x = 0;
				rect.y = 0;
				rect.h = pCodecCtx->height;
				rect.w = pCodecCtx->width ;

				SDL_DisplayYUVOverlay(pOverlay,&rect);


			}

		}
		// Free the packet that was allocated by av_read_frame
		av_free_packet(&packet);
		SDL_PollEvent(&even);
		switch(even.type) 
		{
			case SDL_QUIT:
				SDL_Quit();
				exit(0);
				break;
			default:
				break;
		}


	}

	av_free(pFrame);
	avcodec_close(pCodecCtx);
	av_close_input_file(pAVFCtx);

	system("pause");


	return 0;
}

整个项目的文件，我都上传到资源里去了，可以到我的资源里下载

http://download.csdn.net/detail/rao_warrior/4476533