cinelerra-5.1/cinelerra/overlaydirect.h

   1 #ifndef __OVERLAYDIRECT_H__
   2 #define __OVERLAYDIRECT_H__
   3 #include "overlayframe.h"
   4
   5 #define XBLEND(FN, temp_type, type, max, components, ofs, round) { \
   6         temp_type opcty = fade * max + round, trnsp = max - opcty; \
   7         type** output_rows = (type**)output->get_rows(); \
   8         type** input_rows = (type**)input->get_rows(); \
   9         ix *= components;  ox *= components; \
  10  \
  11         for( int i=pkg->out_row1; i<pkg->out_row2; ++i ) { \
  12                 type* in_row = input_rows[i + iy] + ix; \
  13                 type* output = output_rows[i] + ox; \
  14                 for( int j=ow; --j>=0; ) { \
  15                         if( components == 4 ) { \
  16                                 temp_type r, g, b, a; \
  17                                 ALPHA4_BLEND(FN, temp_type, in_row, output, max, ofs, ofs, round); \
  18                                 ALPHA4_STORE(output, ofs, max); \
  19                         } \
  20                         else { \
  21                                 temp_type r, g, b; \
  22                                 ALPHA3_BLEND(FN, temp_type, in_row, output, max, ofs, ofs, round); \
  23                                 ALPHA3_STORE(output, ofs, max); \
  24                         } \
  25                         in_row += components;  output += components; \
  26                 } \
  27         } \
  28 } break
  29
  30 #endif