theora - Jan 2006 - Less memory allocations

Hi.

We use theora in games and find out that although PostProcessingLevel
is off by default, theora allocates memory for postprocessing in any
case.
The code below differs from original alpha5 only by adding in certain
places
 "... pbi->PostProcessingLevel == 0 ? 0 : ..."
 It is working and allocate less memory.
May be it is good idea to add this (or gather all
 preprocess things in one if(), for example) in future releases.
 
void InitFragmentInfo(PB_INSTANCE * pbi){
  /* clear any existing info */
  ClearFragmentInfo(pbi);

  /* Perform Fragment Allocations */
  pbi->display_fragments     _ogg_malloc(pbi->UnitFragments *
sizeof(*pbi->display_fragments));

  pbi->pixel_index_table     _ogg_malloc(pbi->UnitFragments *
sizeof(*pbi->pixel_index_table));

  pbi->recon_pixel_index_table     _ogg_malloc(pbi->UnitFragments *
sizeof(*pbi->recon_pixel_index_table));
 
  pbi->FragTokenCounts     pbi->PostProcessingLevel == 0 ? 0 :
_ogg_malloc(pbi->UnitFragments * sizeof(*pbi->FragTokenCounts));

  pbi->CodedBlockList     _ogg_malloc(pbi->UnitFragments *
sizeof(*pbi->CodedBlockList));

  pbi->FragMVect     _ogg_malloc(pbi->UnitFragments *
sizeof(*pbi->FragMVect));

  pbi->FragCoeffs     _ogg_malloc(pbi->UnitFragments *
sizeof(*pbi->FragCoeffs));

  pbi->FragCoefEOB     _ogg_malloc(pbi->UnitFragments *
sizeof(*pbi->FragCoefEOB));

  pbi->skipped_display_fragments     _ogg_malloc(pbi->UnitFragments *
sizeof(*pbi->skipped_display_fragments));

  pbi->QFragData     _ogg_malloc(pbi->UnitFragments *
sizeof(*pbi->QFragData));

  pbi->TokenList     pbi->PostProcessingLevel == 0 ? 0 :
_ogg_malloc(pbi->UnitFragments * sizeof(*pbi->TokenList));

  pbi->FragCodingMethod     _ogg_malloc(pbi->UnitFragments *
sizeof(*pbi->FragCodingMethod));

  pbi->FragCoordinates     _ogg_malloc(pbi->UnitFragments *
sizeof(*pbi->FragCoordinates));

  pbi->FragQIndex     pbi->PostProcessingLevel == 0 ? 0 :
_ogg_malloc(pbi->UnitFragments * sizeof(*pbi->FragQIndex));

  pbi->PPCoefBuffer     pbi->PostProcessingLevel == 0 ? 0 :
_ogg_malloc(pbi->UnitFragments * sizeof(*pbi->PPCoefBuffer));

  pbi->FragmentVariances     pbi->PostProcessingLevel == 0 ? 0 :
_ogg_malloc(pbi->UnitFragments * sizeof(*pbi->FragmentVariances));

  pbi->_Nodes     pbi->PostProcessingLevel == 0 ? 0 :
_ogg_malloc(pbi->UnitFragments * sizeof(*pbi->_Nodes));

  /* Super Block Initialization */
  pbi->SBCodedFlags     _ogg_malloc(pbi->SuperBlocks *
sizeof(*pbi->SBCodedFlags));

  pbi->SBFullyFlags     _ogg_malloc(pbi->SuperBlocks *
sizeof(*pbi->SBFullyFlags));

  /* Macro Block Initialization */
  pbi->MBCodedFlags     _ogg_malloc(pbi->MacroBlocks *
sizeof(*pbi->MBCodedFlags));

  pbi->MBFullyFlags     pbi->PostProcessingLevel == 0 ? 0 :
_ogg_malloc(pbi->MacroBlocks * sizeof(*pbi->MBFullyFlags));

  pbi->BlockMap     _ogg_malloc(pbi->SuperBlocks *
sizeof(*pbi->BlockMap));

}
void InitFrameInfo(PB_INSTANCE * pbi, unsigned int FrameSize){

  /* clear any existing info */
  ClearFrameInfo(pbi);

  /* allocate frames */
  pbi->ThisFrameRecon    
_ogg_malloc(FrameSize*sizeof(*pbi->ThisFrameRecon));

  pbi->GoldenFrame     _ogg_malloc(FrameSize*sizeof(*pbi->GoldenFrame));

  pbi->LastFrameRecon    
_ogg_malloc(FrameSize*sizeof(*pbi->LastFrameRecon));

  pbi->PostProcessBuffer     pbi->PostProcessingLevel == 0 ? 0 :
_ogg_malloc(FrameSize*sizeof(*pbi->PostProcessBuffer));
}



Best regards,
  Yudintsev Anton.