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网站建设公司找哪家,北京平面设计公司排名,wordpress服务端,手工加工网在虚拟机上yuv420可以正常显示 #xff0c;而945#xff08;D525#xff09;模块上却无法显示 #xff0c;后来验证了directdraw的yuv420也无法显示 #xff0c;由此怀疑显卡不支持 #xff0c;后把420转换为422显示。420显示如下#xff1a;/* 编译命令#xff1a;arm… 在虚拟机上yuv420可以正常显示而945D525模块上却无法显示后来验证了directdraw的yuv420也无法显示由此怀疑显卡不支持后把420转换为422显示。420显示如下/* 编译命令arm-linux-gcc -o show2642 264showyuv2.c -I/usr/local/ffmpeg_arm/include/ -L/usr/local/ffmpeg_arm/lib/ -lswresample -lavformat -lavutil -lavcodec -lswscale -lx264 libSDL.agcc -o test test.c -I/usr/local/ffmpeg/include/ -L/usr/local/ffmpeg/lib/ -lswresample -lavformat -lavutil -lavcodec -lswscale -lx264 -lSDL */ #include stdio.h #include stdlib.h#include libavformat/avformat.h #include libavdevice/avdevice.h #include libswresample/swresample.h #include libavutil/opt.h #include libavutil/channel_layout.h #include libavutil/parseutils.h #include libavutil/samplefmt.h #include libavutil/fifo.h #include libavutil/intreadwrite.h #include libavutil/dict.h #include libavutil/mathematics.h #include libavutil/pixdesc.h #include libavutil/avstring.h #include libavutil/imgutils.h #include libavutil/timestamp.h #include libavutil/bprint.h #include libavutil/time.h #include libavutil/threadmessage.h #include SDL/SDL.h//#include libavfilter/avcodec.h #include libavcodec/avcodec.h#if HAVE_SYS_RESOURCE_H #include sys/time.h #include sys/types.h #include sys/resource.h #elif HAVE_GETPROCESSTIMES #include windows.h #endif #if HAVE_GETPROCESSMEMORYINFO #include windows.h #include psapi.h #endif#if HAVE_SYS_SELECT_H #include sys/select.h #endif#if HAVE_TERMIOS_H #include fcntl.h #include sys/ioctl.h #include sys/time.h #include termios.h #elif HAVE_KBHIT #include conio.h #endif#if HAVE_PTHREADS #include pthread.h #endif#include time.h#include libavutil/avassert.h#define MAX_LEN 1024 * 50此方法参考官网的例子 static void pgm_save(unsigned char *buf, int wrap, int xsize, int ysize,FILE *f) {// FILE *f;int i;// f fopen(filename,w);// fprintf(f, P5\n%d %d\n%d\n, xsize, ysize, 255);for (i 0; i ysize; i);// fwrite(buf i * wrap, 1, xsize, f);// fclose(f); }int main() {//下面初始化h264解码库//avcodec_init();int w 720;int h 576,retu;SDL_Rect rect;av_register_all();AVFrame *pFrame_ NULL;/* find the video encoder */AVCodec *videoCodec avcodec_find_decoder(AV_CODEC_ID_H264);//得到264的解码器类if(!videoCodec){printf(avcodec_find_decoder error\n);return -1;}AVCodecParserContext *avParserContext av_parser_init(AV_CODEC_ID_H264);//得到解析帧类主要用于后面的帧头查找if(!avParserContext){printf(av_parser_init error\n);return -1;}AVCodecContext *codec_ avcodec_alloc_context3(videoCodec);//解码会话层if(!codec_){printf(avcodec_alloc_context3 error\n);return -1;}//初始化参数下面的参数应该由具体的业务决定codec_-time_base.num 1;codec_-frame_number 1; //每包一个视频帧codec_-codec_type AVMEDIA_TYPE_VIDEO;codec_-bit_rate 0;codec_-time_base.den 25;//帧率codec_-width 720;//视频宽codec_-height 576;//视频高if(avcodec_open2(codec_, videoCodec, NULL) 0)//打开解码器{pFrame_ av_frame_alloc();// Allocate video frame 成功打开解码器后此时可以分配帧内存当然你也可以在后面每次都分配、释放在此我省功夫只在开始分配一次if (!pFrame_) {fprintf(stderr, Could not allocate video frame\n);exit(1);}}else{printf(avcodec_open2 error\n);return -1;}AVPacket packet {0};int dwBufsize 10;int frameFinished dwBufsize;//这个是随便填入数字没什么作用av_init_packet(packet);packet.data NULL;//这里填入一个指向完整H264数据帧的指针packet.size 0;//这个填入H264数据帧的大小FILE *myH264 fopen(1.264, rb);//解码的文件264if(myH264 NULL){perror(cant open 264 file\n);return -1;}FILE *yuvfile fopen(my264.yuv, wb);//成功解码后保存成的YUV文件可以用YUV工具打开浏览if(yuvfile NULL){perror(cant open YUV file\n);return -1;}int readFileLen 1;char readBuf[MAX_LEN];unsigned char *parseBuf malloc(20*MAX_LEN);//这个地方浪费了我一个下午时间当时我用的是栈内存即unsigned char parseBuf[20*MAX_LEN] 结果运行程序一直报错此处需要用堆内存才能正常解码int parseBufLen 0;int frameCount 0;printf(begin...\n);printf(readBuf address is %x\n, readBuf); /SDL initSDL_Surface* hello NULL;SDL_Surface* screen NULL;//Start SDL// SDL_Init( SDL_INIT_EVERYTHING );SDL_Init(SDL_INIT_VIDEO);//Set up screenscreen SDL_SetVideoMode( 1024, 768, 32, SDL_SWSURFACE );SDL_Overlay* overlay SDL_CreateYUVOverlay(w, h, SDL_YV12_OVERLAY, screen);SDL_LockSurface(screen);SDL_LockYUVOverlay(overlay); //while(readFileLen 0)//开始解码工作{//printf(begin...\n);readFileLen fread(readBuf, 1, sizeof(readBuf), myH264);//首先从文件里读出数据if(readFileLen 0){printf(read over\n);break;}else{int handleLen 0;int handleFileLen readFileLen;while(handleFileLen 0){int nLength av_parser_parse2(avParserContext, codec_, parseBuf, parseBufLen, readBuf handleLen, handleFileLen, 0, 0, 0);//查找264帧头handleFileLen - nLength;handleLen nLength;if(parseBufLen 0)//当parseBufLen大于0时说明查找到了帧头{continue;}packet.size parseBufLen;//将查找到的帧长度送入packet.data parseBuf;//将查找到的帧内存送入if(frameCount100)break;//printf(parseBuf address is %x\n, parseBuf);while(packet.size 0){//下面开始真正的解码int decodeLen avcodec_decode_video2(codec_, pFrame_, frameFinished, packet);if(decodeLen 0)break;packet.size - decodeLen;packet.data decodeLen;if(frameFinished 0)//成功解码{int picSize codec_-height * codec_-width;//int newSize picSize * 1.5;//申请内存//unsigned char *buf malloc(newSize);int height pFrame_-height;int width pFrame_-width;//printf(OK, get data\n);//printf(Frame height is %d\n, height);//printf(Frame width is %d\n, width);frameCount ;printf(Frame count is %d\n, frameCount);pgm_save(pFrame_-data[0], pFrame_-linesize[0],//保存Ycodec_-width, codec_-height, yuvfile);pgm_save(pFrame_-data[1], pFrame_-linesize[1],//保存Ucodec_-width/2, codec_-height/2, yuvfile);pgm_save(pFrame_-data[2], pFrame_-linesize[2],//保存Vcodec_-width/2, codec_-height/2, yuvfile);///有了YUV数据后面可以用FFMPEG提供的转换方法将其转成RGB数据进行后续的显示或其它的图像处理工作sdlint i;for(i0;i576;i){//fwrite(buf i * wrap, 1, xsize, f);memcpy(overlay-pixels[0]i*1280, pFrame_-data[0]i*pFrame_-linesize[0], 720); }for(i0;i288;i){memcpy(overlay-pixels[2]i*640, pFrame_-data[1]i*pFrame_-linesize[1], 360);memcpy(overlay-pixels[1]i*640, pFrame_-data[2]i*pFrame_-linesize[2], 360); }SDL_UnlockYUVOverlay(overlay);SDL_UnlockSurface(screen);rect.w w;rect.h h;rect.x rect.y 0;SDL_DisplayYUVOverlay(overlay, rect);//sdlSDL_Delay(40);}elseprintf(failed to decodec\n);}}}}//释放工作avcodec_close(codec_);av_free(codec_);av_free_packet(packet);av_frame_free(pFrame_);//SDLSDL_FreeYUVOverlay(overlay);SDL_FreeSurface(screen);//Quit SDLSDL_Quit();fclose(yuvfile);fclose(myH264);}422显示如下/* 编译命令arm-linux-gcc -o show2642 264showyuv2.c -I/usr/local/ffmpeg_arm/include/ -L/usr/local/ffmpeg_arm/lib/ -lswresample -lavformat -lavutil -lavcodec -lswscale -lx264 libSDL.agcc -o test test.c -I/usr/local/ffmpeg/include/ -L/usr/local/ffmpeg/lib/ -lswresample -lavformat -lavutil -lavcodec -lswscale -lx264 -lSDL */ #include stdio.h #include stdlib.h#include libavformat/avformat.h #include libavdevice/avdevice.h #include libswresample/swresample.h #include libavutil/opt.h #include libavutil/channel_layout.h #include libavutil/parseutils.h #include libavutil/samplefmt.h #include libavutil/fifo.h #include libavutil/intreadwrite.h #include libavutil/dict.h #include libavutil/mathematics.h #include libavutil/pixdesc.h #include libavutil/avstring.h #include libavutil/imgutils.h #include libavutil/timestamp.h #include libavutil/bprint.h #include libavutil/time.h #include libavutil/threadmessage.h #include SDL/SDL.h//#include libavfilter/avcodec.h #include libavcodec/avcodec.h#if HAVE_SYS_RESOURCE_H #include sys/time.h #include sys/types.h #include sys/resource.h #elif HAVE_GETPROCESSTIMES #include windows.h #endif #if HAVE_GETPROCESSMEMORYINFO #include windows.h #include psapi.h #endif#if HAVE_SYS_SELECT_H #include sys/select.h #endif#if HAVE_TERMIOS_H #include fcntl.h #include sys/ioctl.h #include sys/time.h #include termios.h #elif HAVE_KBHIT #include conio.h #endif#if HAVE_PTHREADS #include pthread.h #endif#include time.h#include libavutil/avassert.h#define MAX_LEN 1024 * 50此方法参考官网的例子此方法参考官网的例子 static void pgm_save(unsigned char *buf, int wrap, int xsize, int ysize,FILE *f) {// FILE *f;int i;// f fopen(filename,w);// fprintf(f, P5\n%d %d\n%d\n, xsize, ysize, 255);for (i 0; i ysize; i);// fwrite(buf i * wrap, 1, xsize, f);// fclose(f); }int main() {//下面初始化h264解码库//avcodec_init();int w 720;int h 576,retu;SDL_Rect rect;av_register_all();AVFrame *pFrame_ NULL;/* find the video encoder */AVCodec *videoCodec avcodec_find_decoder(AV_CODEC_ID_H264);//得到264的解码器类if(!videoCodec){printf(avcodec_find_decoder error\n);return -1;}AVCodecParserContext *avParserContext av_parser_init(AV_CODEC_ID_H264);//得到解析帧类主要用于后面的帧头查找if(!avParserContext){printf(av_parser_init error\n);return -1;}AVCodecContext *codec_ avcodec_alloc_context3(videoCodec);//解码会话层if(!codec_){printf(avcodec_alloc_context3 error\n);return -1;}//初始化参数下面的参数应该由具体的业务决定codec_-time_base.num 1;codec_-frame_number 1; //每包一个视频帧codec_-codec_type AVMEDIA_TYPE_VIDEO;codec_-bit_rate 0;codec_-time_base.den 25;//帧率codec_-width 720;//视频宽codec_-height 576;//视频高if(avcodec_open2(codec_, videoCodec, NULL) 0)//打开解码器{pFrame_ av_frame_alloc();// Allocate video frame 成功打开解码器后此时可以分配帧内存当然你也可以在后面每次都分配、释放在此我省功夫只在开始分配一次if (!pFrame_) {fprintf(stderr, Could not allocate video frame\n);exit(1);}}else{printf(avcodec_open2 error\n);return -1;}AVPacket packet {0};int dwBufsize 10;int frameFinished dwBufsize;//这个是随便填入数字没什么作用av_init_packet(packet);packet.data NULL;//这里填入一个指向完整H264数据帧的指针packet.size 0;//这个填入H264数据帧的大小FILE *myH264 fopen(1.264, rb);//解码的文件264if(myH264 NULL){perror(cant open 264 file\n);return -1;}FILE *yuvfile fopen(my264.yuv, wb);//成功解码后保存成的YUV文件可以用YUV工具打开浏览if(yuvfile NULL){perror(cant open YUV file\n);return -1;}int readFileLen 1;char readBuf[MAX_LEN];unsigned char *parseBuf malloc(20*MAX_LEN);//这个地方浪费了我一个下午时间当时我用的是栈内存即unsigned char parseBuf[20*MAX_LEN] 结果运行程序一直报错此处需要用堆内存才能正常解码int parseBufLen 0;int frameCount 0;printf(begin...\n);printf(readBuf address is %x\n, readBuf); /SDL initSDL_Surface* hello NULL;SDL_Surface* screen NULL;//Start SDL// SDL_Init( SDL_INIT_EVERYTHING );SDL_Init(SDL_INIT_VIDEO);//Set up screenscreen SDL_SetVideoMode( 720, 576, 32, SDL_SWSURFACE );SDL_Overlay* overlay SDL_CreateYUVOverlay(w, h, SDL_YUY2_OVERLAY, screen);SDL_LockSurface(screen);SDL_LockYUVOverlay(overlay); unsigned char yuv422[768*576*2]; //while(readFileLen 0)//开始解码工作{//printf(begin...\n);readFileLen fread(readBuf, 1, sizeof(readBuf), myH264);//首先从文件里读出数据if(readFileLen 0){printf(read over\n);break;}else{int handleLen 0;int handleFileLen readFileLen;while(handleFileLen 0){int nLength av_parser_parse2(avParserContext, codec_, parseBuf, parseBufLen, readBuf handleLen, handleFileLen, 0, 0, 0);//查找264帧头handleFileLen - nLength;handleLen nLength;if(parseBufLen 0)//当parseBufLen大于0时说明查找到了帧头{continue;}packet.size parseBufLen;//将查找到的帧长度送入packet.data parseBuf;//将查找到的帧内存送入if(frameCount100)break;//printf(parseBuf address is %x\n, parseBuf);while(packet.size 0){//下面开始真正的解码int decodeLen avcodec_decode_video2(codec_, pFrame_, frameFinished, packet);//if(decodeLen 0)break;packet.size - decodeLen;packet.data decodeLen;if(frameFinished 0)//成功解码{int picSize codec_-height * codec_-width;//int newSize picSize * 1.5;//申请内存//unsigned char *buf malloc(newSize);int height pFrame_-height;int width pFrame_-width;//printf(OK, get data\n);//printf(Frame height is %d\n, height);//printf(Frame width is %d\n, width);frameCount ;printf(Frame count is %d\n, frameCount);pgm_save(pFrame_-data[0], pFrame_-linesize[0],//保存Ycodec_-width, codec_-height, yuvfile);pgm_save(pFrame_-data[1], pFrame_-linesize[1],//保存Ucodec_-width/2, codec_-height/2, yuvfile);pgm_save(pFrame_-data[2], pFrame_-linesize[2],//保存Vcodec_-width/2, codec_-height/2, yuvfile);///有了YUV数据后面可以用FFMPEG提供的转换方法将其转成RGB数据进行后续的显示或其它的图像处理工作sdlint i;/* for(i0;i576;i){//fwrite(buf i * wrap, 1, xsize, f);memcpy(overlay-pixels[0]i*720, pFrame_-data[0]i*pFrame_-linesize[0], 720); }for(i0;i288;i){memcpy(overlay-pixels[2]i*360, pFrame_-data[1]i*pFrame_-linesize[1], 360);memcpy(overlay-pixels[1]i*360, pFrame_-data[2]i*pFrame_-linesize[2], 360); }*/int k0,y,x; //yuv420 - yuv422for( y0;y576;y){for( x0;x720;x){yuv422[k] pFrame_-data[0][y*pFrame_-linesize[0]x];yuv422[k] x%20?pFrame_-data[1][(y/2)*pFrame_-linesize[1]x/2]:pFrame_-data[2][(y/2)*pFrame_-linesize[2]x/2];}}memcpy(overlay-pixels[0],yuv422, codec_-width*codec_-height*2);SDL_UnlockYUVOverlay(overlay);SDL_UnlockSurface(screen);rect.w w;rect.h h;rect.x rect.y 0;SDL_DisplayYUVOverlay(overlay, rect);//sdlSDL_Delay(40);}elseprintf(failed to decodec\n);}}}}//释放工作avcodec_close(codec_);av_free(codec_);av_free_packet(packet);av_frame_free(pFrame_);//SDLSDL_FreeYUVOverlay(overlay);SDL_FreeSurface(screen);//Quit SDLSDL_Quit();fclose(yuvfile);fclose(myH264);}采用sws_scale 实现的数据转换/* 编译命令arm-linux-gcc -o show2642 264showyuv2.c -I/usr/local/ffmpeg_arm/include/ -L/usr/local/ffmpeg_arm/lib/ -lswresample -lavformat -lavutil -lavcodec -lswscale -lx264 libSDL.agcc -o test test.c -I/usr/local/ffmpeg/include/ -L/usr/local/ffmpeg/lib/ -lswresample -lavformat -lavutil -lavcodec -lswscale -lx264 -lSDL */ #include stdio.h #include stdlib.h#include libavformat/avformat.h #include libavdevice/avdevice.h #include libswresample/swresample.h #include libavutil/opt.h #include libavutil/channel_layout.h #include libavutil/parseutils.h #include libavutil/samplefmt.h #include libavutil/fifo.h #include libavutil/intreadwrite.h #include libavutil/dict.h #include libavutil/mathematics.h #include libavutil/pixdesc.h #include libavutil/avstring.h #include libavutil/imgutils.h #include libavutil/timestamp.h #include libavutil/bprint.h #include libavutil/time.h #include libavutil/threadmessage.h #include SDL/SDL.h//#include libavfilter/avcodec.h #include libavcodec/avcodec.h#if HAVE_SYS_RESOURCE_H #include sys/time.h #include sys/types.h #include sys/resource.h #elif HAVE_GETPROCESSTIMES #include windows.h #endif #if HAVE_GETPROCESSMEMORYINFO #include windows.h #include psapi.h #endif#if HAVE_SYS_SELECT_H #include sys/select.h #endif#if HAVE_TERMIOS_H #include fcntl.h #include sys/ioctl.h #include sys/time.h #include termios.h #elif HAVE_KBHIT #include conio.h #endif#if HAVE_PTHREADS #include pthread.h #endif#include time.h#include libavutil/avassert.h#define MAX_LEN 1024 * 50此方法参考官网的例子 static void pgm_save(unsigned char *buf, int wrap, int xsize, int ysize,FILE *f) {// FILE *f;int i;// f fopen(filename,w);// fprintf(f, P5\n%d %d\n%d\n, xsize, ysize, 255);for (i 0; i ysize; i);// fwrite(buf i * wrap, 1, xsize, f);// fclose(f); }int main() {//下面初始化h264解码库//avcodec_init();int w 720;int h 576,retu;SDL_Rect rect;av_register_all();AVFrame *pFrame_ NULL,*pFrameYUV;struct SwsContext *img_convert_ctx NULL;pFrameYUV av_frame_alloc();/* find the video encoder */AVCodec *videoCodec avcodec_find_decoder(AV_CODEC_ID_H264);//得到264的解码器类if(!videoCodec){printf(avcodec_find_decoder error\n);return -1;}AVCodecParserContext *avParserContext av_parser_init(AV_CODEC_ID_H264);//得到解析帧类主要用于后面的帧头查找if(!avParserContext){printf(av_parser_init error\n);return -1;}AVCodecContext *codec_ avcodec_alloc_context3(videoCodec);//解码会话层if(!codec_){printf(avcodec_alloc_context3 error\n);return -1;}//初始化参数下面的参数应该由具体的业务决定codec_-time_base.num 1;codec_-frame_number 1; //每包一个视频帧codec_-codec_type AVMEDIA_TYPE_VIDEO;codec_-bit_rate 0;codec_-time_base.den 25;//帧率codec_-width 720;//视频宽codec_-height 576;//视频高if(avcodec_open2(codec_, videoCodec, NULL) 0)//打开解码器{pFrame_ av_frame_alloc();// Allocate video frame 成功打开解码器后此时可以分配帧内存当然你也可以在后面每次都分配、释放在此我省功夫只在开始分配一次if (!pFrame_) {fprintf(stderr, Could not allocate video frame\n);exit(1);}}else{printf(avcodec_open2 error\n);return -1;}AVPacket packet {0};int dwBufsize 10;int frameFinished dwBufsize;//这个是随便填入数字没什么作用av_init_packet(packet);packet.data NULL;//这里填入一个指向完整H264数据帧的指针packet.size 0;//这个填入H264数据帧的大小FILE *myH264 fopen(1.264, rb);//解码的文件264if(myH264 NULL){perror(cant open 264 file\n);return -1;}FILE *yuvfile fopen(my264.yuv, wb);//成功解码后保存成的YUV文件可以用YUV工具打开浏览if(yuvfile NULL){perror(cant open YUV file\n);return -1;}int readFileLen 1;char readBuf[MAX_LEN];unsigned char *parseBuf malloc(20*MAX_LEN);//这个地方浪费了我一个下午时间当时我用的是栈内存即unsigned char parseBuf[20*MAX_LEN] 结果运行程序一直报错此处需要用堆内存才能正常解码int parseBufLen 0;int frameCount 0;printf(begin...\n);printf(readBuf address is %x\n, readBuf); /SDL initSDL_Surface* hello NULL;SDL_Surface* screen NULL;//Start SDL// SDL_Init( SDL_INIT_EVERYTHING );SDL_Init(SDL_INIT_VIDEO);//Set up screenscreen SDL_SetVideoMode( 720, 576, 32, SDL_SWSURFACE );SDL_Overlay* overlay SDL_CreateYUVOverlay(w, h, SDL_YUY2_OVERLAY, screen);SDL_LockSurface(screen);SDL_LockYUVOverlay(overlay); // //int numBytes avpicture_get_size(AV_PIX_FMT_YUYV422, codec_-width, codec_-height); uint8_t* yuv422 (uint8_t *)av_malloc(numBytes*sizeof(uint8_t)); avpicture_fill((AVPicture *)pFrameYUV, yuv422, AV_PIX_FMT_YUYV422, codec_-width, codec_-height); ///while(readFileLen 0)//开始解码工作{//printf(begin...\n);readFileLen fread(readBuf, 1, sizeof(readBuf), myH264);//首先从文件里读出数据if(readFileLen 0){printf(read over\n);break;}else{int handleLen 0;int handleFileLen readFileLen;while(handleFileLen 0){int nLength av_parser_parse2(avParserContext, codec_, parseBuf, parseBufLen, readBuf handleLen, handleFileLen, 0, 0, 0);//查找264帧头handleFileLen - nLength;handleLen nLength;if(parseBufLen 0)//当parseBufLen大于0时说明查找到了帧头{continue;}packet.size parseBufLen;//将查找到的帧长度送入packet.data parseBuf;//将查找到的帧内存送入if(frameCount100)break;//printf(parseBuf address is %x\n, parseBuf);while(packet.size 0){//下面开始真正的解码int decodeLen avcodec_decode_video2(codec_, pFrame_, frameFinished, packet);if(decodeLen 0)break;packet.size - decodeLen;packet.data decodeLen;if(frameFinished 0)//成功解码{int picSize codec_-height * codec_-width;//int newSize picSize * 1.5;//申请内存//unsigned char *buf malloc(newSize);int height pFrame_-height;int width pFrame_-width;//printf(OK, get data\n);//printf(Frame height is %d\n, height);//printf(Frame width is %d\n, width);frameCount ;printf(Frame count is %d\n, frameCount);pgm_save(pFrame_-data[0], pFrame_-linesize[0],//保存Ycodec_-width, codec_-height, yuvfile);pgm_save(pFrame_-data[1], pFrame_-linesize[1],//保存Ucodec_-width/2, codec_-height/2, yuvfile);pgm_save(pFrame_-data[2], pFrame_-linesize[2],//保存Vcodec_-width/2, codec_-height/2, yuvfile);///有了YUV数据后面可以用FFMPEG提供的转换方法将其转成RGB数据进行后续的显示或其它的图像处理工作sdlint i;/* for(i0;i576;i){//fwrite(buf i * wrap, 1, xsize, f);memcpy(overlay-pixels[0]i*720, pFrame_-data[0]i*pFrame_-linesize[0], 720); }for(i0;i288;i){memcpy(overlay-pixels[2]i*360, pFrame_-data[1]i*pFrame_-linesize[1], 360);memcpy(overlay-pixels[1]i*360, pFrame_-data[2]i*pFrame_-linesize[2], 360); }*/img_convert_ctx sws_getContext(codec_-width, codec_-height, codec_-pix_fmt, codec_-width, codec_-height, AV_PIX_FMT_YUYV422, 2, NULL, NULL, NULL); sws_scale(img_convert_ctx, (const uint8_t* const*) pFrame_-data, pFrame_-linesize, 0, codec_-height, pFrameYUV-data,pFrameYUV-linesize); memcpy(overlay-pixels[0],yuv422, codec_-width*codec_-height*2);SDL_UnlockYUVOverlay(overlay);SDL_UnlockSurface(screen);rect.w w;rect.h h;rect.x rect.y 0;SDL_DisplayYUVOverlay(overlay, rect);//sdlSDL_Delay(40);}elseprintf(failed to decodec\n);}}}}//释放工作avcodec_close(codec_);av_free(codec_);av_free_packet(packet);av_frame_free(pFrame_);//SDLSDL_FreeYUVOverlay(overlay);SDL_FreeSurface(screen);//Quit SDLSDL_Quit();fclose(yuvfile);fclose(myH264);}转载于:https://www.cnblogs.com/mao0504/p/5589743.html

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