git.maemo.org Git - mardrone/blob - mardrone/ARDrone_SDK_Version_1_8_20110726/ARDroneLib/VLIB/Platform/arm9_P6/UVLC/uvlc_mb_layer_p6.c

   1 #include "../video_utils_p6.h"
   2 #include "uvlc_mb_layer_p6.h"
   3
   4 #ifdef HAS_UVLC_WRITE_BLOCK
   5 void uvlc_write_block( video_stream_t* const stream, int16_t* data, int32_t num_coeff)
   6 {
   7    int32_t code, run;
   8
   9   // DC coeff
  10   code = *data++;
  11   video_write_data( stream, code, 10 );
  12   num_coeff--;
  13   // AC coeff
  14   run = 0;
  15   while( num_coeff > 0 )
  16     {
  17       code = *data++;
  18       if( code == 0 )
  19       {
  20         run ++;
  21       }
  22       else
  23       {
  24         num_coeff--;
  25         uvlc_encode( stream, code, run, num_coeff );
  26         run = 0;
  27       }
  28     }
  29 }
  30 #endif // HAS_UVLC_WRITE_BLOCK