framecount = (int) AVI_video_frames (out_fd);		image_width = (int) AVI_video_width (out_fd);		image_height = (int) AVI_video_height (out_fd);		if(!owidth || !oheight){		owidth	= image_width;		oheight	= image_height;		}		printf ("frame: %d  width: %d height: %d \n",			framecount, image_width, image_height);		framerate = AVI_frame_rate (out_fd);		printf (" framerate : %f \n", framerate);		audiobits = AVI_audio_bits (out_fd);		audiorate = AVI_audio_rate (out_fd);		audioformat = AVI_audio_format (out_fd);		printf ("audio rate: %d audio bits: %d audio format: %d\n",			audiorate, audiobits, audioformat);		compressor = AVI_video_compressor (out_fd);		printf (" codec: %s \n", compressor);		if (strncmp (compressor, "RGB4", 4) == 0) {			format = VIDEO_PALETTE_RGB32;			bpp = 4;		} else if (strncmp (compressor, "RGB3", 4) == 0) {			format = VIDEO_PALETTE_RGB24;			bpp = 3;		} else if (strncmp (compressor, "RGB2", 4) == 0) {			format = VIDEO_PALETTE_RGB565;			bpp = 2;		} else if (strncmp (compressor, "I420", 4) == 0) {			format = VIDEO_PALETTE_YUV420P;			bpp = 3;		} else if (strncmp (compressor, "MJPG", 4) == 0) {			format = VIDEO_PALETTE_JPEG;			bpp = 3;		} else if (strncmp (compressor, "DPSH", 4) == 0) {			format = VIDEO_PALETTE_YUV420P;			videocomp = 1;			frame_size = (image_width*image_height*3) >> 1;			bpp = 3;		} else {			printf ("Cannot play this file try Mplayer or Xine \n");			AVI_close (out_fd);			exit (1);		}		/* Init the player */		printf ("bpp %d format %d\n", bpp, format);		//if (format == VIDEO_PALETTE_RAW_JPEG)		//	init_libjpeg_decoder (image_width, image_height);		//pscreen =			//SDL_SetVideoMode (image_width, image_height, bpp * 8,			//			//		  SDL_DOUBLEBUF | SDL_SWSURFACE);/* set the player screen always in 24 bits mode */		pscreen =			SDL_SetVideoMode (owidth, oheight, testbpp,					  SDL_DOUBLEBUF | SDL_SWSURFACE);		if (pscreen == NULL) {			printf ("Couldn't set %d*%dx%d video mode: %s\n",				image_width, image_height, bpp * 8,				SDL_GetError ());			exit (1);		}		/* No Cursor in Player */		SDL_ShowCursor (0);		SDL_WM_SetCaption ("Spcaview Player ", NULL);		p = pscreen->pixels;		synctime = 1000 / framerate;		printf ("Frame time %d ms\n", synctime);		if (AVI_audio_channels (out_fd) == 1) {						expect.format=AUDIO_FORMAT;  			expect.freq=audiorate;  			expect.callback=callback_play;  			expect.samples=AUDIO_SAMPLES;  			expect.channels=CHANNELS;  			expect.userdata=(void*)&RingBuffer;			if(SDL_OpenAudio(&expect,NULL)<0)  				{    				fprintf(stderr,"Couldn't open audio output device: %s\n",SDL_GetError());    				SDL_CloseAudio();    				SDL_Quit();  				}			/* Init the sound player */			bytes_per_read = 2 * audiorate / framerate;			maxsound = audiolength = AVI_audio_bytes (out_fd);			//printf ("bytes to read %d \n",bytes_per_read);			initAudio =1;			/* mute if not a raw PCM file */			if (audioformat == 1)				audioout = 1;		}		i = 0;			do {			if (run) {				intime = SDL_GetTicks ();				/* read frame read video and audio */				err =readFrame (out_fd, i,&jpegData,&jpegSize,&RingBuffer, maxsound,					   &audiolength, &bytes_per_read,					   audioout, 1,videocomp);				//printf("readframe %d audiolength %d position errors %d \n",i,audiolength,err);								if (initAudio ){					initAudio = 0;					SDL_PauseAudio(0); // start play				}				refresh_screen ( jpegData, p, format, image_width,image_height,owidth,oheight,jpegSize,0);				SDL_Flip (pscreen);	//switch the buffer and update screen				pictime = SDL_GetTicks () - intime;				//printf(" get pictimes %d expected %d  \n",pictime,synctime);				if (pictime < synctime)					SDL_Delay (synctime - pictime);				i++;			}			fflush (stdout);			switch (run){			case 1:			if (SDL_PollEvent (&sdlevent) == 1) {				switch (sdlevent.type) {					case SDL_KEYDOWN:						switch (sdlevent.key.keysym.sym) {														case SDLK_DOWN:								SDL_PauseAudio(1); // stop play								run = 0;								break;														case SDLK_s:								if (run == 0) {									getJpegPicture(jpegData,image_width,image_height,										format,jpegSize,PICTURE,NULL);									}								break;							case SDLK_SPACE:							if (fullsize ==								    0) {									pscreen = SDL_SetVideoMode (owidth, oheight, testbpp, 									SDL_DOUBLEBUF | SDL_FULLSCREEN | SDL_SWSURFACE);									fullsize = 1;								} else {									pscreen = SDL_SetVideoMode (owidth, oheight, testbpp, 									SDL_DOUBLEBUF | SDL_SWSURFACE);									fullsize = 0;								}								if (pscreen ==								    NULL) {									printf ("Couldn't set %d*%dx%d video mode: %s\n", owidth, oheight, testbpp, SDL_GetError ());									exit (1);								}																SDL_ShowCursor									(0);																							break;							default:								printf ("\nStop asked\n");								quit = 0;								break;						}						break;					case SDL_QUIT:						quit = 0;						break;				} 			} //end if poll			break;			case 0:			if (SDL_WaitEvent (&sdlevent) == 1) {				switch (sdlevent.type) {					case SDL_KEYDOWN:						switch (sdlevent.key.keysym.sym) {							case SDLK_UP:								initAudio = 1;								run = 1;								break;							case SDLK_RIGHT:								if (i <								    (framecount								     - 1)) {									i++;									err = readFrame										(out_fd, i,										&jpegData,&jpegSize,										 &RingBuffer,										 maxsound,										 &audiolength,										 &bytes_per_read,										 audioout,										 1,videocomp);									printf ("scanning up frame %d\n", i);									refresh_screen										(jpegData,										 p,										 format,										 image_width,										 image_height,										 owidth,										 oheight,										 jpegSize,0);									SDL_Flip (pscreen);	//switch the buffer and update screen								}								break;							case SDLK_LEFT:								if (i > 1) {									i--;									err = readFrame										(out_fd, i,										&jpegData,&jpegSize,										 &RingBuffer,										 maxsound,										 &audiolength,										 &bytes_per_read,										 audioout,										 0,videocomp);									printf ("scanning down frame %d\n", i);									refresh_screen										(jpegData,										 p,										 format,										 image_width,										 image_height,										 owidth,										 oheight,										 jpegSize,0);									SDL_Flip (pscreen);	//switch the buffer and update screen								}								break;							case SDLK_s:								if (run == 0) {									getJpegPicture(jpegData,image_width,image_height,										format,jpegSize,PICTURE,NULL);									}								break;							case SDLK_SPACE:															if (fullsize ==								    0) {									pscreen = SDL_SetVideoMode (owidth, oheight, testbpp, SDL_DOUBLEBUF | SDL_FULLSCREEN | SDL_SWSURFACE);									fullsize = 1;								} else {									pscreen = SDL_SetVideoMode (owidth, oheight, testbpp, SDL_DOUBLEBUF | SDL_SWSURFACE);									fullsize = 0;								}								if (pscreen ==								    NULL) {									printf ("Couldn't set %d*%dx%d video mode: %s\n", owidth, oheight, testbpp, SDL_GetError ());									exit (1);								}																SDL_ShowCursor(0);								refresh_screen(jpegData,										 p,										 format,										 image_width,										 image_height,										 owidth,										 oheight,										 jpegSize,0);									SDL_Flip (pscreen);	//switch the buffer and update screen								break;							default:								printf ("\nStop asked\n");								quit = 0;								break;						}						break;					case SDL_QUIT:						quit = 0;						break;				} 			} //end if wait			break;			} //end switch run		}		while (i < framecount && quit == 1);		free (jpegData);		//close_libjpeg_decoder ();		if (audioout) {				while ((RingBuffer.ptread != RingBuffer.ptwrite) && retry--){ 			SDL_Delay(10);  			//fprintf(stderr,"Waiting .. stop the player %d\n",retry); 			}			 SDL_CloseAudio(); // stop play						audioout = 0;				}		AVI_close (out_fd);		SDL_Quit ();return 0;} static void spcaPrintParam (int fd,struct video_param *videoparam);static void spcaSetAutoExpo(int fd, struct video_param * videoparam){	videoparam->chg_para = CHGABRIGHT;	videoparam->autobright = !videoparam->autobright;	if(ioctl(fd,SPCASVIDIOPARAM, videoparam) == -1){		printf ("autobright error !!\n");	} else		spcaPrintParam (fd,videoparam);	}static void spcaSetLightFrequency(int fd, struct video_param * videoparam, int light_freq){			       	videoparam->chg_para = CHGLIGHTFREQ;	videoparam->light_freq = light_freq;	if(ioctl(fd,SPCASVIDIOPARAM, videoparam) == -1){		printf ("light freqency error !!\n");	} else		spcaPrintParam (fd,videoparam);}static int spcaSwitchLightFrequency(int fd, struct video_param * videoparam){			       	int light_freq;        if(ioctl(fd,SPCAGVIDIOPARAM, videoparam) == -1){		printf ("wrong spca5xx device\n");	} else {	   light_freq = videoparam->light_freq;	   if(light_freq == 50)	      light_freq +=10;	   else if(light_freq == 60)               light_freq = 0;	   else if(light_freq == 0)   	      light_freq = 50;	   if(light_freq)	    printf ("Current light frequency filter: %d Hz\n", light_freq);	   else	    printf ("Current light frequency filter: NoFliker\n");	   spcaSetLightFrequency(fd,videoparam,light_freq);	}	return light_freq;}static void spcaSetTimeInterval(int fd, struct video_param *videoparam, unsigned short time){	if (time < 1000) {	videoparam->chg_para = CHGTINTER;	videoparam->time_interval = time;	if(ioctl(fd,SPCASVIDIOPARAM, videoparam) == -1){		printf ("frame_times error !!\n");	} else		spcaPrintParam (fd,videoparam);	}}static void spcaSetQuality(int fd, struct video_param *videoparam, unsigned char index){	if (index < 6) {	videoparam->chg_para = CHGQUALITY;	videoparam->quality = index;	if(ioctl(fd,SPCASVIDIOPARAM, videoparam) == -1){		printf ("quality error !!\n");	} else		spcaPrintParam (fd,videoparam);	}}static void spcaPrintParam (int fd, struct video_param *videoparam){	if(ioctl(fd,SPCAGVIDIOPARAM, videoparam) == -1){		printf ("wrong spca5xx device\n");	} else 		printf("quality %d autoexpo %d Timeframe %d lightfreq %d\n",			 videoparam->quality,videoparam->autobright,videoparam->time_interval, videoparam->light_freq);}static void qualityUp(int fd,struct video_param *videoparam){	unsigned char index = videoparam->quality;	index+=1;	spcaSetQuality(fd,videoparam,index);}static void qualityDown(int fd,struct video_param *videoparam){	unsigned char index = videoparam->quality;	if(index > 0) index--;	spcaSetQuality(fd,videoparam,index);}static void timeUp(int fd, struct video_param *videoparam){	unsigned short index = videoparam->time_interval;	index+=10;	spcaSetTimeInterval(fd,videoparam,index);}static void timeDown(int fd, struct video_param *videoparam){	unsigned short index = videoparam->time_interval;	if(index > 0) index -=10;	spcaSetTimeInterval(fd,videoparam,index);}int spcaGrab (char *outputfile,char fourcc[4] , const char *videodevice, int image_width,int image_height, int format, int owidth, int oheight,	int grabMethod,int videoOn,int audioout,int videocomp,int autobright,int statOn,int decodeOn) {			/* Timing value used for statistic */	Uint32 total_decode_time = 0;	Uint32 time = 0;	Uint32 prevtime = 0;	Uint32 synctime = 0;	Uint32 decodetime = 0;	double average_decode_time = 0;	Uint32 intime = 0;	Uint32 pictime = 0;	Uint32 delaytime = 0;	Uint32 compresstime = 0;	/**********************************/	/*        video structures       */	int fd;	/* default mmap */	int i, j, k, nframes = 2000, f, status;	struct video_mmap vmmap;	struct video_capability videocap;	int mmapsize;	struct video_mbuf videombuf;	struct video_picture videopict;	struct video_window videowin;	struct video_channel videochan;	struct video_param videoparam;	int norme = 0;	int channel = 0;	/******** output screen pointer ***/	SDL_Surface *pscreen;	SDL_Event sdlevent;	unsigned char *p = NULL;	unsigned char *pp = NULL;	/**********************************/	/*        avi parametres          */	avi_t *out_fd;	unsigned char *pFramebuffer;	unsigned char *tmp = NULL;	// don't forget the Till lesson	unsigned char *dpshDest = NULL;	u_int8_t *jpegData = NULL;	// Till lesson a good pointer is a pointer NULL	int jpegSize;	int ff;	int framecount = 0;	/*********************************/	/*          Starting Flags       */	int run = 1;	int quit = 1;			int initAudio = 0; //flag start audio	int method = 1;	int streamid ;	int isVideoChannel = 1;	int frame_size = 0;	int len = 0; 			/*********************************/	/* data for SDL_audioin && SDL_audio */	SDL_AudioSpec spec, result;  	SDL_AudioSpec expect;  	struct Rbuffer RingBuffer;  	int retry = 100;  	int ptread ;	int ptwrite ;  	int err = 0; 		int bytes_per_read =0;