LINUX MPEG4 DVR源代码,还包括一个可以跨平台运行的MPEG4 播放器(需要XVID与SDL开发库包)

一.LINUX DVR源码
#include <stdio.h>#include <stdlib.h>#include <stdint.h>#include <errno.h>#include <fcntl.h>#include <signal.h>#include <sys/ioctl.h>#include <sys/mman.h>#include <linux/videodev.h>#include "xvid.h"#define FRAMERATE_INCR 1001#define SMALL_EPS (1e-10)#define VIDEO "/dev/video"#define INDEX 0#define IOCTL(fd, req, addr ) /((-1==ioctl(fd,req,addr))?(perror(#req),close(fd),exit(EXIT_FAILURE)):0)static float ARG_FRAMERATE = 25.00f;static int ARG_QUALITY = 4;static int ARG_MAXKEYINTERVAL = 250;static char * ARG_OUTPUTFILE= "out.m4u";static FILE * fp = NULL;static int done = 0;static const int motion_presets[] = {/* quality 0 */0,/* quality 1 */XVID_ME_ADVANCEDDIAMOND16,/* quality 2 */XVID_ME_ADVANCEDDIAMOND16 | XVID_ME_HALFPELREFINE16,/* quality 3 */XVID_ME_ADVANCEDDIAMOND16 | XVID_ME_HALFPELREFINE16 |XVID_ME_ADVANCEDDIAMOND8 | XVID_ME_HALFPELREFINE8,/* quality 4 */XVID_ME_ADVANCEDDIAMOND16 | XVID_ME_HALFPELREFINE16 |XVID_ME_ADVANCEDDIAMOND8 | XVID_ME_HALFPELREFINE8 |XVID_ME_CHROMA_PVOP | XVID_ME_CHROMA_BVOP,/* quality 5 */XVID_ME_ADVANCEDDIAMOND16 | XVID_ME_HALFPELREFINE16 |XVID_ME_ADVANCEDDIAMOND8 | XVID_ME_HALFPELREFINE8 |XVID_ME_CHROMA_PVOP | XVID_ME_CHROMA_BVOP,/* quality 6 */XVID_ME_ADVANCEDDIAMOND16 | XVID_ME_HALFPELREFINE16 | XVID_ME_EXTSEARCH16 |XVID_ME_ADVANCEDDIAMOND8 | XVID_ME_HALFPELREFINE8 | XVID_ME_EXTSEARCH8 |XVID_ME_CHROMA_PVOP | XVID_ME_CHROMA_BVOP,};static const int vop_presets[] = {/* quality 0 */0,/* quality 1 */0,/* quality 2 */XVID_VOP_HALFPEL,/* quality 3 */XVID_VOP_HALFPEL | XVID_VOP_INTER4V,/* quality 4 */XVID_VOP_HALFPEL | XVID_VOP_INTER4V,/* quality 5 */XVID_VOP_HALFPEL | XVID_VOP_INTER4V |XVID_VOP_TRELLISQUANT,/* quality 6 */XVID_VOP_HALFPEL | XVID_VOP_INTER4V |XVID_VOP_TRELLISQUANT | XVID_VOP_HQACPRED,};static int XDIM=352,YDIM=288;static use_assembler = 0;static void *enc_handle = NULL;static int enc_init(int use_assembler);static int enc_main(unsigned char *image,unsigned char *bitstream,int *key,int *stats_type,int *stats_quant,int *stats_length,int stats[3]);static int enc_stop();//signal act method definationstatic void clean(int signum){ done=1;}int main(int argc,char *argv[]){ //register SIGINT action method ,to save the m4u file signal(SIGINT,clean); int fd; struct v4l2_capability cap; struct v4l2_format format; struct v4l2_requestbuffers reqbuf; struct v4l2_buffer buffer; struct v4l2_input input; int index=0,i;for (i=1; i< argc; i++) { if (strcmp("-asm", argv[i]) == 0 ) {use_assembler = 1;}else if(strcmp("-f", argv[i]) == 0 && i < argc -1){ i++; ARG_OUTPUTFILE = argv[i]; }else if(strcmp("-i", argv[i]) == 0 && i < argc -1){ i++; index = atoi(argv[i]); } else if(strcmp("-w", argv[i]) == 0 && i < argc -1){ i++; XDIM = atoi(argv[i]); } else if(strcmp("-h", argv[i]) == 0 && i < argc -1){ i++; YDIM = atoi(argv[i]); } } //init capture card fd = open(VIDEO,O_RDWR); if(fd<0) { perror("Can't open /dev/video device"); exit(errno); } //if card can't support video capture and by means of steamio,exit IOCTL(fd, VIDIOC_QUERYCAP, &cap); if ( !(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE) &&!(cap.capabilities & V4L2_CAP_STREAMING)) { fprintf(stderr, "Couldn't use the card /n"); exit(3); } //query input and select the desired inputIOCTL(fd, VIDIOC_G_INPUT, &index); input.index = index; IOCTL(fd, VIDIOC_ENUMINPUT, &input); printf ("Current input: Index %i,Name %s/n", index,input.name); for(i=0;;i++) { if(i!=index) { input.index = i; if(-1==ioctl(fd, VIDIOC_ENUMINPUT, &input)) break; else printf ("Other input: Index %i,Name %s/n",i,input.name); } }IOCTL(fd, VIDIOC_S_INPUT, &index); //get current video format,set the desired format format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; IOCTL(fd,VIDIOC_G_FMT,&format); format.fmt.pix.width = XDIM; format.fmt.pix.height = YDIM; format.fmt.pix.pixelformat = V4L2_PIX_FMT_YVU420; format.fmt.pix.field = V4L2_FIELD_ANY;//V4L2_FIELD_INTERLACED IOCTL(fd,VIDIOC_S_FMT,&format); XDIM = format.fmt.pix.width; printf("Gotten width %d/n",XDIM); YDIM = format.fmt.pix.height; printf("Gotten height %d/n",YDIM); //let driver get the buffers reqbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; reqbuf.memory = V4L2_MEMORY_MMAP; reqbuf.count = 4; IOCTL(fd,VIDIOC_REQBUFS,&reqbuf ); if (reqbuf.count < 4) { printf ("Not enough buffer memory for driver/n"); exit (5); }//mmap the driver's buffer to application address //create relative buffers struct to be used by mmap struct { void * start; size_t length; } buffers[reqbuf.count]; //mmap the driver's kernel buffer into applicationfor (i=0;i<reqbuf.count;i++) { buffer.type = reqbuf.type; buffer.index =i ; //query the status of one buffer ,mmap the driver buffer IOCTL(fd,VIDIOC_QUERYBUF,&buffer); buffers[i].length = buffer.length; buffers[i].start = mmap (NULL,buffer.length, PROT_READ | PROT_WRITE, MAP_SHARED, fd,buffer.m.offset); if (buffers[i].start == MAP_FAILED) { close(fd); perror ("mmap"); exit(errno); } } //begin video capture IOCTL(fd,VIDIOC_STREAMON,&reqbuf.type); //enqueue all driver buffers for (i=0;i<reqbuf.count;i++) { buffer.type = reqbuf.type; buffer.index = i; IOCTL(fd,VIDIOC_QUERYBUF, &buffer); IOCTL(fd,VIDIOC_QBUF,&buffer); } //init xvid int result; result = enc_init(1); if(result!=0) {fprintf(stderr, "Encore INIT problem, return value %d/n", result);goto clean_all; } //get mem of mpg4 frame uint8_t *mp4_buffer = NULL; mp4_buffer = (unsigned char *) malloc(XDIM*YDIM);if (mp4_buffer==NULL) { fprintf(stderr,"malloc error"); goto clean_all; } int key;int stats_type;int stats_quant;int stats_length; int sse[3]; //create store mp4 filefp= fopen(ARG_OUTPUTFILE, "rb"); if (fp== NULL) { perror("Error opening output file.");exit(-1); } //main loop ,frame capture,compressed i = 0; int outbytes,m4v_size; while(!done) { //dequeue one frame buffer.type = reqbuf.type; buffer.index = i; IOCTL(fd, VIDIOC_QUERYBUF, &buffer); IOCTL(fd, VIDIOC_DQBUF, &buffer); /*debug info printf("current frame's unix time seconds :%d/n",buffer.timestamp.tv_sec); printf("current frame's unix time mcicoseconds :%d/n",buffer.timestamp.tv_usec); */ //compress a frame m4v_size = enc_main((uint8_t *)buffers[i].start, mp4_buffer+16, &key, &stats_type,&stats_quant, &stats_length, sse);//store into output fileoutbytes = fwrite(mp4_buffer, 1, m4v_size, fp);if(outbytes != m4v_size){ fprintf(stderr,"Error writing the m4u file/n"); exit(7);}//enqueue one frame buffer.type = reqbuf.type; buffer.index = i; IOCTL(fd, VIDIOC_QUERYBUF, &buffer ); IOCTL(fd, VIDIOC_QBUF, &buffer ); i++; if( i >= reqbuf.count ) i = 0; }clean_all: fclose(fp);enc_stop(); //stop capture IOCTL(fd, VIDIOC_STREAMOFF, &reqbuf.type ); //unmmap the apllication buffer for (i=0;i<reqbuf.count;i++) munmap (buffers[i].start,buffers[i].length); //release the dynamic mem close(fd);return 0;}intenc_init(int use_assembler){int xerr;//xvid_plugin_cbr_t cbr; xvid_plugin_single_t single;xvid_plugin_2pass1_t rc2pass1;xvid_plugin_2pass2_t rc2pass2;//xvid_plugin_fixed_t rcfixed;xvid_enc_plugin_t plugins[7];xvid_gbl_init_t xvid_gbl_init;xvid_enc_create_t xvid_enc_create;/*------------------------------------------------------------------------ * XviD core initialization *----------------------------------------------------------------------*//* Set version -- version checking will done by xvidcore */memset(&xvid_gbl_init, 0, sizeof(xvid_gbl_init));xvid_gbl_init.version = XVID_VERSION; xvid_gbl_init.debug = 0;/* Do we have to enable ASM optimizations ? */if (use_assembler) {xvid_gbl_init.cpu_flags = 0;}/* Initialize XviD core -- Should be done once per __process__ */xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL);/*------------------------------------------------------------------------ * XviD encoder initialization *----------------------------------------------------------------------*//* Version again */memset(&xvid_enc_create, 0, sizeof(xvid_enc_create));xvid_enc_create.version = XVID_VERSION;/* Width and Height of input frames */xvid_enc_create.width = XDIM;xvid_enc_create.height = YDIM;xvid_enc_create.profile = XVID_PROFILE_S_L3;/* init plugins */ xvid_enc_create.zones = NULL; xvid_enc_create.num_zones = 0;xvid_enc_create.plugins = NULL;xvid_enc_create.num_plugins = 0;/* No fancy thread tests */xvid_enc_create.num_threads = 0;/* Frame rate - Do some quick float fps = fincr/fbase hack */if ((ARG_FRAMERATE - (int) ARG_FRAMERATE) < SMALL_EPS) {xvid_enc_create.fincr = 1;xvid_enc_create.fbase = (int) ARG_FRAMERATE;} else {xvid_enc_create.fincr = FRAMERATE_INCR;xvid_enc_create.fbase = (int) (FRAMERATE_INCR * ARG_FRAMERATE);}/* Maximum key frame interval */ if (ARG_MAXKEYINTERVAL > 0) { xvid_enc_create.max_key_interval = ARG_MAXKEYINTERVAL; }else { xvid_enc_create.max_key_interval = (int) ARG_FRAMERATE *10; }/* Bframes settings */xvid_enc_create.max_bframes = 0;xvid_enc_create.bquant_ratio = 150;xvid_enc_create.bquant_offset = 100;/* Dropping ratio frame -- we don't need that */xvid_enc_create.frame_drop_ratio = 0;/* Global encoder options */xvid_enc_create.global = 0;/* I use a small value here, since will not encode whole movies, but short clips */xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL);/* Retrieve the encoder instance from the structure */enc_handle = xvid_enc_create.handle;return (xerr);}intenc_main(unsigned char *image, unsigned char *bitstream, int *key, int *stats_type, int *stats_quant, int *stats_length, int sse[3]){int ret;xvid_enc_frame_t xvid_enc_frame;xvid_enc_stats_t xvid_enc_stats;/* Version for the frame and the stats */memset(&xvid_enc_frame, 0, sizeof(xvid_enc_frame));xvid_enc_frame.version = XVID_VERSION;memset(&xvid_enc_stats, 0, sizeof(xvid_enc_stats));xvid_enc_stats.version = XVID_VERSION;/* Bind output buffer */xvid_enc_frame.bitstream = bitstream;xvid_enc_frame.length = -1;/* Initialize input image fields */if (image) {xvid_enc_frame.input.plane[0] = image;xvid_enc_frame.input.csp = XVID_CSP_I420;xvid_enc_frame.input.stride[0] = XDIM;} else {xvid_enc_frame.input.csp = XVID_CSP_NULL;}/* Set up core's general features */xvid_enc_frame.vol_flags = 0;/* Set up core's general features */xvid_enc_frame.vop_flags = vop_presets[ARG_QUALITY];/* Frame type -- let core decide for us */xvid_enc_frame.type = XVID_TYPE_AUTO;/* Force the right quantizer -- It is internally managed by RC plugins */xvid_enc_frame.quant = 3;/* Set up motion estimation flags */xvid_enc_frame.motion = motion_presets[ARG_QUALITY];/* We don't use special matrices */xvid_enc_frame.quant_intra_matrix = NULL;xvid_enc_frame.quant_inter_matrix = NULL;/* Encode the frame */ret = xvid_encore(enc_handle, XVID_ENC_ENCODE, &xvid_enc_frame, &xvid_enc_stats);*key = (xvid_enc_frame.out_flags & XVID_KEYFRAME);*stats_type = xvid_enc_stats.type;*stats_quant = xvid_enc_stats.quant;*stats_length = xvid_enc_stats.length;sse[0] = xvid_enc_stats.sse_y;sse[1] = xvid_enc_stats.sse_u;sse[2] = xvid_enc_stats.sse_v;return (ret);}intenc_stop(){int xerr;/* Destroy the encoder instance */xerr = xvid_encore(enc_handle, XVID_ENC_DESTROY, NULL, NULL);return (xerr);}

 

下面是基于SDL的跨平台MPEG4播放器源代码,支持硬件YUV加速
#include <stdint.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include <time.h>#include <SDL/SDL.h>#include "xvid.h"#define USE_PNM 1#define USE_TGA 0static int SHXDIM = 0;//display sizestatic int SHYDIM = 0;static int XDIM = 352;//real sizestatic int YDIM = 288;static int ARG_SAVEDECOUTPUT = 0;static int ARG_SAVEMPEGSTREAM = 0;static char *ARG_INPUTFILE = NULL;static int CSP = XVID_CSP_I420;static int BPP = 1;static int FORMAT = USE_PNM;static char filepath[256] = "./";static void *dec_handle = NULL;#define BUFFER_SIZE (2*1024*1024)static const int display_buffer_bytes = 0;static SDL_Surface *screen;static SDL_Overlay *overlay;static SDL_Rect rect;static double msecond();static int dec_init(int use_assembler, int debug_level);static int dec_main(unsigned char *istream,unsigned char *ostream,int istream_size,xvid_dec_stats_t *xvid_dec_stats);static int dec_stop();static void usage();static int write_image(char *prefix, unsigned char *image);static int write_pnm(char *filename, unsigned char *image);static int write_tga(char *filename, unsigned char *image);const char * type2str(int type){ if (type==XVID_TYPE_IVOP) return "I"; if (type==XVID_TYPE_PVOP) return "P"; if (type==XVID_TYPE_BVOP) return "B"; return "S";}static void init_SDL(){ if (SDL_Init (SDL_INIT_VIDEO) < 0) { fprintf (stderr, "Couldn't initialize SDL: %s/n", SDL_GetError()); exit (1); } atexit (SDL_Quit); screen = SDL_SetVideoMode (SHXDIM, SHYDIM, 0, SDL_HWSURFACE | SDL_DOUBLEBUF | SDL_ANYFORMAT | SDL_RESIZABLE); if (screen == NULL) { fprintf(stderr, "Couldn't set video mode: %s/n", SDL_GetError()); exit(2); } if (0 == screen->flags & SDL_HWSURFACE) { fprintf(stderr,"Can't get hardware surface/n"); exit(3); } SDL_WM_SetCaption ("SDL MultiMedia Application", NULL); overlay = SDL_CreateYUVOverlay(XDIM, YDIM, SDL_YV12_OVERLAY, screen); if (!overlay) { fprintf(stderr, "Couldn't create overlay: %s/n", SDL_GetError()); exit(4); } //show the overlay status printf("Created %dx%dx%d %s %s overlay/n",overlay->w,overlay->h,overlay->planes, overlay->hw_overlay?"hardware":"software", overlay->format==SDL_YV12_OVERLAY?"YV12": overlay->format==SDL_IYUV_OVERLAY?"IYUV": overlay->format==SDL_YUY2_OVERLAY?"YUY2": overlay->format==SDL_UYVY_OVERLAY?"UYVY": overlay->format==SDL_YVYU_OVERLAY?"YVYU": "Unknown"); rect.x=0; rect.y=0; rect.w=SHXDIM; rect.h=SHYDIM;}int main(int argc, char *argv[]){SDL_Event event;uint32_t lastftick;unsigned char *mp4_buffer = NULL;unsigned char *mp4_ptr = NULL;unsigned char *out_buffer = NULL;int useful_bytes;xvid_dec_stats_t xvid_dec_stats;double totaldectime; long totalsize;int status;int fps = 25; int fpsdelay;int paused=0; int resized=0; int use_assembler = 1;int debug_level = 0; char filename[256]; FILE *in_file;int filenr;int i;for (i=1; i< argc; i++) { if (strcmp("-asm", argv[i]) == 0 ) {use_assembler = 1;} else if (strcmp("-debug", argv[i]) == 0 && i < argc - 1 ) {i++;if (sscanf(argv[i], "0x%x", &debug_level) != 1) {debug_level = atoi(argv[i]);}} else if (strcmp("-d", argv[i]) == 0) {ARG_SAVEDECOUTPUT = 1;} else if (strcmp("-i", argv[i]) == 0 && i < argc - 1 ) {i++;ARG_INPUTFILE = argv[i];} else if (strcmp("-c", argv[i]) == 0 && i < argc - 1 ) {i++;if (strcmp(argv[i], "rgb16") == 0) {CSP = XVID_CSP_RGB555;BPP = 2;} else if (strcmp(argv[i], "rgb24") == 0) {CSP = XVID_CSP_BGR;BPP = 3;} else if (strcmp(argv[i], "rgb32") == 0) {CSP = XVID_CSP_BGRA;BPP = 4;} else if (strcmp(argv[i], "yv12") == 0) {CSP = XVID_CSP_YV12;BPP = 1;} else {CSP = XVID_CSP_I420;BPP = 1;}} else if (strcmp("-f", argv[i]) == 0 && i < argc -1) {i++;if (strcmp(argv[i], "tga") == 0) {FORMAT = USE_TGA;} else {FORMAT = USE_PNM;}} else if (strcmp("-help", argv[i]) == 0) {usage();return(0);} else if(strcmp("-w", argv[i]) == 0 && i < argc -1){ i++; SHXDIM = atoi(argv[i]); } else if(strcmp("-h", argv[i]) == 0 && i < argc -1){ i++; SHYDIM = atoi(argv[i]); } else if(strcmp("-fps", argv[i]) == 0 && i < argc -1){ i++; fps = atoi(argv[i]); } else {usage();exit(-1);}} if (ARG_INPUTFILE==NULL) {fprintf(stderr, "Warning: MSVC build does not read EOF correctly from stdin. Use the -i switch./n/n");} in_file = fopen(ARG_INPUTFILE, "rb"); if (in_file == NULL) {fprintf(stderr, "Error opening input file %s/n", ARG_INPUTFILE);return(-1); }/* PNM/PGM format can't handle 16/32 bit data */if (BPP != 1 && BPP != 3 && FORMAT == USE_PNM) {FORMAT = USE_TGA;}/* Memory for encoded mp4 stream */mp4_buffer = (unsigned char *) malloc(BUFFER_SIZE);if (!mp4_buffer)goto free_all_memory;out_buffer = (unsigned char *)malloc(XDIM*YDIM*3/2); if (!out_buffer)goto free_all_memory;/******************************************************************************* INIT SDL*******************************************************************************/ init_SDL(); /***************************************************************************** * XviD PART Start ****************************************************************************/status = dec_init(use_assembler, debug_level);if (status) {fprintf(stderr,"Decore INIT problem, return value %d/n", status);goto release_all;} /***************************************************************************** * Main loop ****************************************************************************//* Fill the buffer ,create 2M buffer*/useful_bytes = fread(mp4_buffer, 1, BUFFER_SIZE, in_file);totaldectime = 0;totalsize = 0;filenr = 0;mp4_ptr = mp4_buffer; uint8_t *outy,*outu,*outv,*op[3];int y; /* set the start frame */ i=0; fpsdelay=1000/fps;lastftick=SDL_GetTicks();do {int used_bytes = 0;double dectime;while (SDL_PollEvent(&event)) { switch (event.type) { case SDL_VIDEORESIZE: screen=SDL_SetVideoMode(event.resize.w, event.resize.h, 0, SDL_RESIZABLE | SDL_SWSURFACE); rect.w=event.resize.w; rect.h=event.resize.h; if (paused) { resized=1; } break; case SDL_KEYDOWN: if (event.key.keysym.sym == SDLK_SPACE) { paused=!paused; break; } if (event.key.keysym.sym != SDLK_ESCAPE) { goto release_all; } case SDL_QUIT: goto release_all; } }/** If the buffer is half empty or there are no more bytes in it* then fill it.*/if (mp4_ptr > mp4_buffer + BUFFER_SIZE/2) { int already_in_buffer = (mp4_buffer + BUFFER_SIZE - mp4_ptr); /* Move data if needed */ if (already_in_buffer > 0) memcpy(mp4_buffer, mp4_ptr, already_in_buffer); /* Update mp4_ptr */ mp4_ptr = mp4_buffer; /* read new data */ if(feof(in_file)) break; useful_bytes += fread(mp4_buffer + already_in_buffer, 1, BUFFER_SIZE - already_in_buffer, in_file); }if ((!paused)||(resized)){ if (((SDL_GetTicks()-lastftick)>fpsdelay)||(resized)) { lastftick=SDL_GetTicks();/* This loop is needed to handle VOL/NVOP reading */do{ /* Decode frame */ dectime = msecond(); used_bytes = dec_main(mp4_ptr, out_buffer, useful_bytes, &xvid_dec_stats); dectime = msecond() - dectime;if(xvid_dec_stats.type==XVID_TYPE_VOL && (xvid_dec_stats.data.vol.width != XDIM ||xvid_dec_stats.data.vol.height != YDIM)) { //reallocate bigger out framefree(out_buffer);XDIM = xvid_dec_stats.data.vol.width; YDIM = xvid_dec_stats.data.vol.height; out_buffer = (unsigned char *) malloc(XDIM*YDIM*3/2); if (!out_buffer) goto free_all_memory; //reallocate bigger yuv overlay SDL_FreeYUVOverlay(overlay); overlay = SDL_CreateYUVOverlay(XDIM, YDIM, SDL_YV12_OVERLAY, screen); if (!overlay) { fprintf(stderr, "Couldn't create overlay: %s/n", SDL_GetError()); exit(4); } } /* Update buffer pointers */if(used_bytes > 0) { mp4_ptr += used_bytes;useful_bytes -= used_bytes;/* Total size */totalsize += used_bytes;} }while (xvid_dec_stats.type <= 0 && useful_bytes > 0);/* Check if there is a negative number of useful bytes left in buffer * This means we went too far */ if(useful_bytes < 0) break; /* Updated data - Count only usefull decode time */totaldectime += dectime; //display the decoded frame SDL_LockSurface(screen); SDL_LockYUVOverlay(overlay);outy = out_buffer;outu = out_buffer+XDIM*YDIM;outv = out_buffer+XDIM*YDIM*5/4;for(y=0;y<screen->h && y<overlay->h;y++){ op[0]=overlay->pixels[0]+overlay->pitches[0]*y;op[1]=overlay->pixels[1]+overlay->pitches[1]*(y/2);op[2]=overlay->pixels[2]+overlay->pitches[2]*(y/2);memcpy(op[0],outy+y*XDIM,XDIM);if(y%2 == 0){ memcpy(op[1],outu+XDIM/2*y/2,XDIM/2); memcpy(op[2],outv+XDIM/2*y/2,XDIM/2); }} SDL_UnlockYUVOverlay(overlay); SDL_UnlockSurface(screen); SDL_DisplayYUVOverlay(overlay, &rect);/* Save output frame if required */if (ARG_SAVEDECOUTPUT) { sprintf(filename, "%sdec%05d", filepath, filenr);if(write_image(filename, out_buffer)) { fprintf(stderr,"Error writing decoded frame %s/n",filename);} } filenr++; if (resized) resized = 0; } } SDL_Delay(10);} while (useful_bytes>0 || !feof(in_file));useful_bytes = 0; /* Empty buffer *//***************************************************************************** * Flush decoder buffers ****************************************************************************/do {/* Fake vars */int used_bytes;double dectime; do { dectime = msecond(); used_bytes = dec_main(NULL, out_buffer, -1, &xvid_dec_stats); dectime = msecond() - dectime; } while(used_bytes>=0 && xvid_dec_stats.type <= 0); if (used_bytes < 0) { /* XVID_ERR_END */ break; }/* Updated data - Count only usefull decode time */totaldectime += dectime;/* Prints some decoding stats */if (!display_buffer_bytes) {printf("Frame %5d: type = %s, dectime(ms) =%6.1f, length(bytes) =%7d/n",filenr, type2str(xvid_dec_stats.type), dectime, used_bytes);}/* Save output frame if required */if (ARG_SAVEDECOUTPUT) {sprintf(filename, "%sdec%05d", filepath, filenr);if(write_image(filename, out_buffer)) {fprintf(stderr,"Error writing decoded frame %s/n",filename);}}filenr++;}while(1);/***************************************************************************** * Calculate totals and averages for output, print results ****************************************************************************/if (filenr>0) {totalsize /= filenr;totaldectime /= filenr;printf("Avg: dectime(ms) =%7.2f, fps =%7.2f, length(bytes) =%7d/n", totaldectime, 1000/totaldectime, (int)totalsize);}else{printf("Nothing was decoded!/n");}/***************************************************************************** * XviD PART Stop ****************************************************************************/ release_all: SDL_FreeYUVOverlay(overlay); if (dec_handle) { status = dec_stop();if (status) fprintf(stderr, "decore RELEASE problem return value %d/n", status);} free_all_memory: free(out_buffer);free(mp4_buffer);return 0;}/***************************************************************************** * Usage function ****************************************************************************/static void usage(){fprintf(stderr, "Usage : xvid_decraw [OPTIONS]/n");fprintf(stderr, "Options :/n");fprintf(stderr, " -asm : use assembly optimizations (default=disabled)/n");fprintf(stderr, " -i string : input filename (default=stdin)/n");fprintf(stderr, " -d : save decoder output/n");fprintf(stderr, " -f format : choose output file format (tga, pnm, pgm)/n");fprintf(stderr, " -w width : init window width/n");fprintf(stderr, " -h height : init window height/n");fprintf(stderr, " -help : This help message/n");fprintf(stderr, " (* means default)/n");}/* return the current time in milli seconds */static doublemsecond(){clock_t clk;clk = clock();return(clk * 1000 / CLOCKS_PER_SEC);} static int write_image(char *prefix, unsigned char *image){char filename[1024];char *ext;int ret;if (FORMAT == USE_PNM && BPP == 1) {ext = "pgm";} else if (FORMAT == USE_PNM && BPP == 3) {ext = "pnm";} else if (FORMAT == USE_TGA) {ext = "tga";} else {fprintf(stderr, "Bug: should not reach this path code -- please report to [e-mail] with command line options used");exit(-1);}sprintf(filename, "%s.%s", prefix, ext);if (FORMAT == USE_PNM) {ret = write_pnm(filename, image);} else {ret = write_tga(filename, image);}return(ret);}static int write_tga(char *filename, unsigned char *image){FILE * f;char hdr[18];f = fopen(filename, "wb");if ( f == NULL) {return -1;}hdr[0] = 0; /* ID length */hdr[1] = 0; /* Color map type */hdr[2] = (BPP>1)?2:3; /* Uncompressed true color (2) or greymap (3) */hdr[3] = 0; /* Color map specification (not used) */hdr[4] = 0; /* Color map specification (not used) */hdr[5] = 0; /* Color map specification (not used) */hdr[6] = 0; /* Color map specification (not used) */hdr[7] = 0; /* Color map specification (not used) */hdr[8] = 0; /* LSB X origin */hdr[9] = 0; /* MSB X origin */hdr[10] = 0; /* LSB Y origin */hdr[11] = 0; /* MSB Y origin */hdr[12] = (XDIM>>0)&0xff; /* LSB Width */hdr[13] = (XDIM>>8)&0xff; /* MSB Width */if (BPP > 1) {hdr[14] = (YDIM>>0)&0xff; /* LSB Height */hdr[15] = (YDIM>>8)&0xff; /* MSB Height */} else {hdr[14] = ((YDIM*3)>>1)&0xff; /* LSB Height */hdr[15] = ((YDIM*3)>>9)&0xff; /* MSB Height */}hdr[16] = BPP*8;hdr[17] = 0x00 | (1<<5) /* Up to down */ | (0<<4); /* Image descriptor *//* Write header */fwrite(hdr, 1, sizeof(hdr), f);/* write first plane */fwrite(image, 1, XDIM*YDIM*BPP, f);/* Write Y and V planes for YUV formats */if (BPP == 1) {int i;/* Write the two chrominance planes */for (i=0; i<YDIM/2; i++) {fwrite(image+XDIM*YDIM + i*XDIM/2, 1, XDIM/2, f);fwrite(image+5*XDIM*YDIM/4 + i*XDIM/2, 1, XDIM/2, f);}}/* Close the file */fclose(f);return(0);}static int write_pnm(char *filename, unsigned char *image){FILE * f;f = fopen(filename, "wb");if ( f == NULL) {return -1;}if (BPP == 1) {int i;fprintf(f, "P5/n#xvid/n%i %i/n255/n", XDIM, YDIM*3/2);fwrite(image, 1, XDIM*YDIM, f);for (i=0; i<YDIM/2;i++) {fwrite(image+XDIM*YDIM + i*XDIM/2, 1, XDIM/2, f);fwrite(image+5*XDIM*YDIM/4 + i*XDIM/2, 1, XDIM/2, f);}} else if (BPP == 3) {int i;fprintf(f, "P6/n#xvid/n%i %i/n255/n", XDIM, YDIM);for (i=0; i<XDIM*YDIM*3; i+=3) {fputc(image[i+2], f);fputc(image[i+1], f);fputc(image[i+0], f);}}fclose(f);return 0;}/***************************************************************************** * Routines for decoding: init decoder, use, and stop decoder ****************************************************************************//* init decoder before first run */static intdec_init(int use_assembler, int debug_level){int ret;xvid_gbl_init_t xvid_gbl_init;xvid_dec_create_t xvid_dec_create;/* Reset the structure with zeros */memset(&xvid_gbl_init, 0, sizeof(xvid_gbl_init_t));memset(&xvid_dec_create, 0, sizeof(xvid_dec_create_t));/*------------------------------------------------------------------------ * XviD core initialization *----------------------------------------------------------------------*//* Version */xvid_gbl_init.version = XVID_VERSION;/* Assembly setting */if(use_assembler) xvid_gbl_init.cpu_flags = 0;elsexvid_gbl_init.cpu_flags = XVID_CPU_FORCE;xvid_gbl_init.debug = debug_level;xvid_global(NULL, 0, &xvid_gbl_init, NULL);/*------------------------------------------------------------------------ * XviD encoder initialization *----------------------------------------------------------------------*//* Version */xvid_dec_create.version = XVID_VERSION;/* * Image dimensions -- set to 0, xvidcore will resize when ever it is * needed */xvid_dec_create.width = 0;xvid_dec_create.height = 0;ret = xvid_decore(NULL, XVID_DEC_CREATE, &xvid_dec_create, NULL);dec_handle = xvid_dec_create.handle;return(ret);}/* decode one frame */static intdec_main(unsigned char *istream, unsigned char *ostream, int istream_size, xvid_dec_stats_t *xvid_dec_stats){int ret;xvid_dec_frame_t xvid_dec_frame;/* Reset all structures */memset(&xvid_dec_frame, 0, sizeof(xvid_dec_frame_t));memset(xvid_dec_stats, 0, sizeof(xvid_dec_stats_t));/* Set version */xvid_dec_frame.version = XVID_VERSION;xvid_dec_stats->version = XVID_VERSION;/* No general flags to set */xvid_dec_frame.general = 0;/* Input stream */xvid_dec_frame.bitstream = istream;xvid_dec_frame.length = istream_size;/* Output frame structure */xvid_dec_frame.output.plane[0] = ostream;xvid_dec_frame.output.stride[0] = XDIM*BPP;xvid_dec_frame.output.csp = CSP;ret = xvid_decore(dec_handle, XVID_DEC_DECODE, &xvid_dec_frame, xvid_dec_stats);return(ret);}/* close decoder to release resources */static intdec_stop(){int ret;ret = xvid_decore(dec_handle, XVID_DEC_DESTROY, NULL, NULL);return(ret);}