cinelerra-5.1/cinelerra/overlaydirect.h

   1 /*
   2  * This program is free software; you can redistribute it and/or modify it
   3  * under the terms of the GNU General Public License as published
   4  * by the Free Software Foundation; either version 2 of the License, or
   5  * (at your option) any later version.
   6  *
   7  * This program is distributed in the hope that it will be useful, but
   8  * WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  10  * General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public
  13  * License along with this program; if not, write to the Free Software
  14  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  15  * USA
  16  */
  17
  18
  19 #ifndef __OVERLAYDIRECT_H__
  20 #define __OVERLAYDIRECT_H__
  21 #include "overlayframe.h"
  22
  23 #define XBLEND(FN, temp_type, type, max, components, ofs, round) { \
  24         temp_type opcty = fade * max + round, trnsp = max - opcty; \
  25         type** output_rows = (type**)output->get_rows(); \
  26         type** input_rows = (type**)input->get_rows(); \
  27         ix *= components;  ox *= components; \
  28  \
  29         for( int i=pkg->out_row1; i<pkg->out_row2; ++i ) { \
  30                 type* in_row = input_rows[i + iy] + ix; \
  31                 type* output = output_rows[i] + ox; \
  32                 for( int j=ow; --j>=0; ) { \
  33                         if( components == 4 ) { \
  34                                 temp_type r, g, b, a; \
  35                                 ALPHA4_BLEND(FN, temp_type, in_row, output, max, ofs, ofs, round); \
  36                                 ALPHA4_STORE(output, ofs, max); \
  37                         } \
  38                         else { \
  39                                 temp_type r, g, b; \
  40                                 ALPHA3_BLEND(FN, temp_type, in_row, output, max, ofs, ofs, round); \
  41                                 ALPHA3_STORE(output, ofs, max); \
  42                         } \
  43                         in_row += components;  output += components; \
  44                 } \
  45         } \
  46 } break
  47
  48 #endif