756     write_png_depth,  member
8416   if (image->depth == 16 && mng_info->write_png_depth != 16)  in WriteOnePNGImage()
8427      (mng_info->write_png_colortype > 4 || (mng_info->write_png_depth >= 8 &&  in WriteOnePNGImage()
9478   if (mng_info->write_png_depth != 0)  in WriteOnePNGImage()
9479      image_depth=mng_info->write_png_depth;  in WriteOnePNGImage()
9831       if (ping_bit_depth < (int) mng_info->write_png_depth)  in WriteOnePNGImage()
9832          ping_bit_depth = mng_info->write_png_depth;  in WriteOnePNGImage()
10003                 if(!mng_info->write_png_depth)  in WriteOnePNGImage()
10039                 if (depth_1_ok && mng_info->write_png_depth <= 1)  in WriteOnePNGImage()
10042                 else if (depth_2_ok && mng_info->write_png_depth <= 2)  in WriteOnePNGImage()
10045                 else if (depth_4_ok && mng_info->write_png_depth <= 4)  in WriteOnePNGImage()
10084             if (mng_info->write_png_depth == 0)  in WriteOnePNGImage()
10163     if (ping_bit_depth <  (ssize_t) mng_info->write_png_depth)  in WriteOnePNGImage()
10164          ping_bit_depth =  (ssize_t) mng_info->write_png_depth;  in WriteOnePNGImage()
10443      ((mng_info->write_png_depth &&  in WriteOnePNGImage()
10444      (int) mng_info->write_png_depth != ping_bit_depth) ||  in WriteOnePNGImage()
10458           if (mng_info->write_png_depth)  in WriteOnePNGImage()
10462                   mng_info->write_png_depth,  in WriteOnePNGImage()
10924                   mng_info->write_png_depth &&  in WriteOnePNGImage()
10925                   mng_info->write_png_depth != old_bit_depth)  in WriteOnePNGImage()
11180       if (mng_info->write_png_depth)  in WriteOnePNGImage()
11183             "    Defined png:bit-depth: %d",mng_info->write_png_depth);  in WriteOnePNGImage()
11620                 mng_info->write_png_depth = 1;  in WritePNGImage()
11623                 mng_info->write_png_depth = 2;  in WritePNGImage()
11626                 mng_info->write_png_depth = 4;  in WritePNGImage()
11629                 mng_info->write_png_depth = 8;  in WritePNGImage()
11632                 mng_info->write_png_depth = 16;  in WritePNGImage()
11663       mng_info->write_png_depth = 8;  in WritePNGImage()
11670       mng_info->write_png_depth = 8;  in WritePNGImage()
11685       mng_info->write_png_depth = 8;  in WritePNGImage()
11696       mng_info->write_png_depth = 16;  in WritePNGImage()
11711       mng_info->write_png_depth = 16;  in WritePNGImage()
11724         mng_info->write_png_depth = 1;  in WritePNGImage()
11727         mng_info->write_png_depth = 2;  in WritePNGImage()
11730         mng_info->write_png_depth = 4;  in WritePNGImage()
11733         mng_info->write_png_depth = 8;  in WritePNGImage()
11736         mng_info->write_png_depth = 16;  in WritePNGImage()
11746           "  png:bit-depth=%d was defined.\n",mng_info->write_png_depth);  in WritePNGImage()