lavplay.c

Motion JPEG编解码器源代码

               lavplay_increase_frame(info, atoi(buffer+2));
               break;
            default:
               lavplay_set_frame(info, atoi(buffer+1));
               break;
         }
         break;
      case 'e':
         switch (buffer[1])
         {
            case 'o':
               sscanf(buffer+2, "%d %d", &arg1, &arg2);
               lavplay_edit_copy(info, arg1, arg2);
               break;
            case 'u':
               sscanf(buffer+2, "%d %d", &arg1, &arg2);
               lavplay_edit_cut(info, arg1, arg2);
               break;
            case 'p':
               lavplay_edit_paste(info, current_frame);
               break;
            case 'm':
               sscanf(buffer+2, "%d %d %d", &arg1, &arg2, &arg3);
               lavplay_edit_move(info, arg1, arg2, arg3);
               break;
            case 'a':
               sscanf(buffer+2, "%s %d %d %d", arg, &arg1, &arg2, &arg3);
               lavplay_edit_addmovie(info, arg, arg1, arg2, arg3);
               break;
            case 'd':
               sscanf(buffer+2, "%d %d", &arg1, &arg2);
               lavplay_edit_delete(info, arg1, arg2);
               break;
            case 's':
               sscanf(buffer+2, "%d %d", &arg1, &arg2);
               lavplay_edit_set_playable(info, arg1, arg2);
               break;
         }
         break;
      case 'o':
         movie[0] = buffer+2;
         lavplay_open(info, movie, 1);
         break;
      case 'w':
         switch (buffer[1])
         {
            case 'a':
               sscanf(buffer+3, "%s", arg);
               lavplay_save_all(info, arg);
               break;
            case 's':
               sscanf(buffer+3, "%d %d %s", &arg1, &arg2, arg);
               lavplay_save_selection(info, arg, arg1, arg2);
               break;
         }
         break;
   }
}

static int set_option(const char *name, char *value)
{
   /* return 1 means error, return 0 means okay */
   int nerr = 0;
   if (strcmp(name, "verbose")==0 || strcmp(name, "v")==0)
   {
      verbose = atoi(optarg);
   }
   else if (strcmp(name, "audio")==0 || strcmp(name, "a")==0)
   {
      info->audio = atoi(optarg);
   }
   else if (strcmp(name, "H-offset")==0 || strcmp(name, "H")==0)
   {
      info->horizontal_offset = atoi(optarg);
   }
   else if (strcmp(name, "V-offset")==0 || strcmp(name, "V")==0)
   {
      info->vertical_offset = atoi(optarg);
   }
   else if (strcmp(name, "skip")==0 || strcmp(name, "s")==0)
   {
      skip_seconds = atoi(optarg);
      if (skip_seconds<0) skip_seconds = 0;
   }
   else if (strcmp(name, "synchronization")==0 || strcmp(name, "c")==0)
   {
      info->sync_correction = atoi(optarg);
   }
   else if (strcmp(name, "mjpeg-buffers")==0 || strcmp(name, "n")==0)
   {
      info->MJPG_numbufs = atoi(optarg);
      if (info->MJPG_numbufs<4) info->MJPG_numbufs = 4;
      if (info->MJPG_numbufs>256) info->MJPG_numbufs = 256;
   }
   else if (strcmp(name, "no-quit")==0 || strcmp(name, "q")==0)
   {
      info->continuous = 1;
   }
   else if (strcmp(name, "exchange-fields")==0 || strcmp(name, "x")==0)
   {
      info->exchange_fields = 1;
   }
   else if (strcmp(name, "zoom")==0 || strcmp(name, "z")==0)
   {
      info->zoom_to_fit = 1;
   }
   else if (strcmp(name, "gui-mode")==0 || strcmp(name, "g")==0)
   {
      gui_mode = 1;
   }
   else if (strcmp(name, "full-screen")==0 || strcmp(name, "Z")==0)
   {
      info->soft_full_screen = 1;
   }
   else if( strcmp( name, "preserve-pathnames") == 0 || strcmp(name, "P")==0)
   {
	   info->preserve_pathnames = 1;
   }
   else if (strcmp(name, "playback")==0 || strcmp(name, "p")==0)
   {
      switch (value[0])
      {
#ifdef HAVE_V4L
         case 'H':
         case 'C':
#endif
#ifdef HAVE_SDL
         case 'S':
#endif
            info->playback_mode = value[0];
            break;
         default:
            mjpeg_error("Unknown playback mode: \'%c\'", value[0]);
            nerr++;
            break;
      }
   }
   else if (strcmp(name, "size")==0 || strcmp(name, "S")==0)
   {
      if (sscanf(value, "%dx%d", &info->sdl_width, &info->sdl_height)!=2)
      {
         mjpeg_error( "--size parameter requires NxN argument");
         nerr++;
      }
   }
   else if (strcmp(name, "flicker")==0 || strcmp(name, "F")==0)
   {
      info->flicker_reduction = 0;
   }
   else if (strcmp(name, "display")==0)
   {
      info->display = optarg;
   }
   else if (strcmp(name, "s-x-offset")==0)
   {
      info->vw_x_offset = atoi(optarg);
   }
   else if (strcmp(name, "s-y-offset")==0)
   {
      info->vw_y_offset = atoi(optarg);
   }
   else nerr++; /* unknown option - error */

   return nerr;
}

static void check_command_line_options(int argc, char *argv[])
{
   int nerr,n,option_index=0;
   char option[2];

#ifdef HAVE_GETOPT_LONG
   /* getopt_long options */
   static struct option long_options[]={
      {"verbose"       ,1,0,0},     /* -v/--verbose         */
      {"norm"            ,1,0,0},   /* -o/--norm            */
      {"h-offset"        ,1,0,0},   /* -H/--H-offset        */
      {"v-offset"        ,1,0,0},   /* -V/--V-offset        */
      {"skip"            ,1,0,0},   /* -s/--skip            */
      {"synchronization" ,1,0,0},   /* -c/--synchronization */
      {"mjpeg-buffers"   ,1,0,0},   /* -n/--mjpeg-buffers   */
      {"no-quit"         ,0,0,0},   /* -q/--no-quit         */
      {"exchange-fields" ,0,0,0},   /* -x/--exchange-fields */
      {"zoom"            ,0,0,0},   /* -z/--zoom            */
      {"full-screen"     ,0,0,0},   /* -Z/--full-screen     */
      {"preserve-pathnames" ,0,0,0},   /* -P/--preserve-pathnames    */	  
      {"playback"        ,1,0,0},   /* -p/--playback [SHC]  */
      {"audio"           ,1,0,0},   /* -a/--audio num       */
      {"gui-mode"        ,1,0,0},   /* -g/--gui-mode        */
      {"size"            ,1,0,0},   /* -S/--size            */
      {"flicker"         ,0,0,0},   /* -F/--flicker         */
      {"display"         ,1,0,0},   /* --display            */
      {"s-x-offset"      ,1,0,0},   /* --s-x-offset         */
      {"s-y-offset"      ,1,0,0},   /* --s-y-offset         */
      {0,0,0,0}
   };
#endif

   if(argc < 2) Usage(argv[0]);

/* Get options */
   nerr = 0;
#ifdef HAVE_GETOPT_LONG
   while( (n=getopt_long(argc,argv,"S:a:v:H:V:s:c:n:t:qZp:xrzgPF",
      long_options, &option_index)) != EOF)
#else
   while( (n=getopt(argc,argv,"S:a:v:H:V:s:c:n:t:qZp:xrzgPF")) != EOF)
#endif
   {
      switch(n)
      {
#ifdef HAVE_GETOPT_LONG
         /* getopt_long values */
         case 0:
            nerr += set_option(long_options[option_index].name,
               optarg);
            break;
#endif

         /* These are the old getopt-values (non-long) */
         default:
            sprintf(option, "%c", n);
            nerr += set_option(option, optarg);
            break;
      }
   }
   if(optind>=argc) nerr++;
   if(nerr) Usage(argv[0]);

   if (getenv("LAV_VIDEO_DEV")) info->video_dev = getenv("LAV_VIDEO_DEV");
   else {
       struct stat vstat;
       if(stat("/dev/video", &vstat) == 0 && S_ISCHR(vstat.st_mode)) 
           info->video_dev = "/dev/video";
       else if(stat("/dev/video0", &vstat) == 0 && S_ISCHR(vstat.st_mode)) 
           info->video_dev = "/dev/video0";
       else if(stat("/dev/v4l/video0", &vstat) == 0 && S_ISCHR(vstat.st_mode)) 
           info->video_dev = "/dev/v4l/video0";
       else if(stat("/dev/v4l0", &vstat) == 0 && S_ISCHR(vstat.st_mode)) 
           info->video_dev = "/dev/v4l0";
       else if(stat("/dev/v4l", &vstat) == 0 && S_ISCHR(vstat.st_mode)) 
           info->video_dev = "/dev/v4l";
   }
   if (getenv("LAV_AUDIO_DEV")) info->audio_dev = getenv("LAV_AUDIO_DEV");
   else {
       struct stat astat;
       if(stat("/dev/dsp", &astat) == 0 && S_ISCHR(astat.st_mode)) 
           info->audio_dev = "/dev/dsp";
       else if(stat("/dev/sound/dsp", &astat) == 0 && S_ISCHR(astat.st_mode)) 
           info->audio_dev = "/dev/sound/dsp";
       else if(stat("/dev/audio", &astat) == 0 && S_ISCHR(astat.st_mode)) 
           info->audio_dev = "/dev/audio";
   }

   mjpeg_default_handler_verbosity(verbose);

   /* Get and open input files */
   lavplay_open(info, argv + optind, argc - optind);
}

int main(int argc, char **argv)
{
   char buffer[256];

   /* Output Version information - Used by xlav to check for
    * consistency. 
    */
   printf( LAVPLAY_VSTR "\n" );
   fflush(stdout);
   printf( "lavtools version " VERSION "\n" );
   fcntl(0, F_SETFL, O_NONBLOCK);
   signal(SIGINT,SigHandler);
   info = lavplay_malloc();
   if (!info) return 1;
   check_command_line_options(argc, argv);
   info->output_statistics = stats;
   info->msg_callback = input;
   info->state_changed = state_changed;
   if (!lavplay_main(info)) return 1;
   if (!lavplay_set_frame(info, skip_seconds * info->editlist->video_norm=='p'?25:30)) return 1;
   if (!lavplay_set_speed(info, 1)) return 1;

   /* okay, now wait until we get command-line input and ROCK! */
   while (!exit_flag)
   {
      if (read(0, buffer, 255) > 0)
         process_input(buffer);
      else
         usleep(10000);
   }

   lavplay_busy(info); /* wait for all the nice goodies to shut down */
   lavplay_free(info);

   fprintf(stderr, "\n");

   return 0;
}