Cross Reference: /vbox/src/libs/libpng-1.2.8/pngrtran.c

Lines Matching refs:channels
546  * to alpha channels.
585 /* Expand tRNS chunks to alpha channels. */
1117       info_ptr->channels = 1;
1119       info_ptr->channels = 3;
1121       info_ptr->channels = 1;
1129       info_ptr->channels++;
1137       info_ptr->channels++;
1152        if(info_ptr->channels < png_ptr->user_transform_channels)
1153          info_ptr->channels = png_ptr->user_transform_channels;
1157    info_ptr->pixel_depth = (png_byte)(info_ptr->channels *
1380              /*  png_byte channels;          number of channels (1-4) */
1381              /*  png_byte pixel_depth;       bits per pixel (depth*channels) */
1387          png_ptr->row_info.channels = png_ptr->user_transform_channels;
1390          png_ptr->row_info.channels);
1483       row_info->pixel_depth = (png_byte)(8 * row_info->channels);
1484       row_info->rowbytes = row_width * row_info->channels;
1506       int channels = 0;
1513          shift[channels++] = row_info->bit_depth - sig_bits->red;
1514          shift[channels++] = row_info->bit_depth - sig_bits->green;
1515          shift[channels++] = row_info->bit_depth - sig_bits->blue;
1519          shift[channels++] = row_info->bit_depth - sig_bits->gray;
1523          shift[channels++] = row_info->bit_depth - sig_bits->alpha;
1526       for (c = 0; c < channels; c++)
1571             png_uint_32 istop = row_width * channels;
1575                *bp++ >>= shift[i%channels];
1583             png_uint_32 istop = channels * row_width;
1588                value >>= shift[i%channels];
1614       png_uint_32 istop = row_info->width * row_info->channels;
1648       row_info->pixel_depth = (png_byte)(8 * row_info->channels);
1649       row_info->rowbytes = row_info->width * row_info->channels;
1876             row_info->channels = 2;
1890             row_info->channels = 2;
1911             row_info->channels = 2;
1927             row_info->channels = 2;
1950             row_info->channels = 4;
1966             row_info->channels = 4;
1991             row_info->channels = 4;
2011             row_info->channels = 4;
2094       row_info->channels += (png_byte)2;
2096       row_info->pixel_depth = (png_byte)(row_info->channels *
2347    row_info->channels -= (png_byte)2;
2349       row_info->pixel_depth = (png_byte)(row_info->channels *
3266          row_info->channels--;
3267          row_info->pixel_depth = (png_byte)(row_info->channels *
3578                row_info->channels = 4;
3596                row_info->channels = 3;
3741             row_info->channels = 2;
3796          row_info->channels = 4;
3849          row_info->channels = 1;
3878          row_info->channels = 1;