w3d/tarkin_dec.c

   1 #include <sys/types.h>
   2 #include <sys/stat.h>
   3 #include <fcntl.h>
   4 #include "w3dtypes.h"
   5 #include "mem.h"
   6 #include "tarkin.h"
   7 #include "pnm.h"
   8 #include <ogg/ogg.h>
   9
  10 #define CHUNK_SIZE 4096
  11
  12 int main (int argc, char **argv)
  13 {
  14    char *fname = "stream.ogg";
  15    char ofname [11];
  16    uint32_t frame = 0;
  17    uint8_t *rgb;
  18    int fd;
  19    TarkinStream *tarkin_stream;
  20    int nread;
  21    int nheader = 0;
  22    ogg_sync_state oy;
  23    ogg_stream_state os;
  24    ogg_page og;
  25    ogg_packet op;
  26    TarkinInfo ti;
  27    TarkinComment tc;
  28    TarkinTime date;
  29
  30    char *buffer;
  31
  32    TarkinVideoLayerDesc *layer;
  33
  34    if (argc == 2) {
  35       fname = argv[1];
  36    } else if (argc != 1) {
  37       printf ("\n usage: %s <tarkin_stream>\n\n", argv[0]);
  38       exit (-1);
  39    }
  40
  41    if ((fd = open (fname, O_RDONLY|O_BINARY)) < 0) {
  42       printf ("error opening '%s'\n", fname);
  43       exit (-1);
  44    }
  45
  46    tarkin_stream = tarkin_stream_new (fd);
  47    ogg_sync_init(&oy);
  48    ogg_stream_init(&os,1);
  49    tarkin_info_init(&ti);
  50    tarkin_comment_init(&tc);
  51    while(1){
  52       buffer = ogg_sync_buffer(&oy, CHUNK_SIZE);
  53       if((nread = read(fd, buffer, CHUNK_SIZE))>0)
  54           ogg_sync_wrote(&oy, nread);
  55       else{
  56           ogg_sync_wrote(&oy,0);
  57       }
  58       if(ogg_sync_pageout(&oy,&og)){
  59           ogg_stream_pagein(&os,&og);
  60           while(ogg_stream_packetout(&os,&op)){
  61              if(op.e_o_s)
  62                 break;
  63              if(nheader<3){ /* 3 first packets to headerin */
  64                 tarkin_synthesis_headerin(&ti, &tc, &op);
  65                 if(nheader == 2){
  66                    tarkin_synthesis_init(tarkin_stream, &ti);
  67                 }
  68                 nheader++;
  69              } else {
  70                 tarkin_synthesis_packetin(tarkin_stream, &op);
  71                 while(tarkin_synthesis_frameout(tarkin_stream, &rgb, 0, &date)==0){
  72                   layer = &tarkin_stream->layer->desc;
  73                   snprintf(ofname, 11, layer->format == TARKIN_GRAYSCALE ? "out%03d.pgm" : "out%03d.ppm", frame);
  74                   printf ("write '%s' %dx%d\n", ofname, layer->width, layer->height);
  75                   write_pnm (ofname, rgb, layer->width, layer->height);
  76                   tarkin_synthesis_freeframe(tarkin_stream, rgb);
  77
  78                   frame ++;
  79                 }
  80              }
  81           }
  82       }
  83       if(nread==0)
  84           break;
  85    }
  86    tarkin_stream_destroy (tarkin_stream);
  87    close (fd);
  88
  89    return 0;
  90 }
  91