764     write_png_depth,  member
8905   if (image->depth == 16 && mng_info->write_png_depth != 16)  in WriteOnePNGImage()
8917      (mng_info->write_png_colortype > 4 || (mng_info->write_png_depth >= 8 &&  in WriteOnePNGImage()
9973   if (mng_info->write_png_depth != 0)  in WriteOnePNGImage()
9974      image_depth=mng_info->write_png_depth;  in WriteOnePNGImage()
10320       if (ping_bit_depth < (int) mng_info->write_png_depth)  in WriteOnePNGImage()
10321          ping_bit_depth = mng_info->write_png_depth;  in WriteOnePNGImage()
10492                 if(!mng_info->write_png_depth)  in WriteOnePNGImage()
10528                 if (depth_1_ok && mng_info->write_png_depth <= 1)  in WriteOnePNGImage()
10531                 else if (depth_2_ok && mng_info->write_png_depth <= 2)  in WriteOnePNGImage()
10534                 else if (depth_4_ok && mng_info->write_png_depth <= 4)  in WriteOnePNGImage()
10574             if (mng_info->write_png_depth == 0)  in WriteOnePNGImage()
10653     if (ping_bit_depth <  (ssize_t) mng_info->write_png_depth)  in WriteOnePNGImage()
10654          ping_bit_depth =  (ssize_t) mng_info->write_png_depth;  in WriteOnePNGImage()
10933      ((mng_info->write_png_depth &&  in WriteOnePNGImage()
10934      (int) mng_info->write_png_depth != ping_bit_depth) ||  in WriteOnePNGImage()
10948           if (mng_info->write_png_depth)  in WriteOnePNGImage()
10952                   mng_info->write_png_depth,  in WriteOnePNGImage()
11680       if (mng_info->write_png_depth)  in WriteOnePNGImage()
11683             "    Defined png:bit-depth: %d",mng_info->write_png_depth);  in WriteOnePNGImage()
12154                 mng_info->write_png_depth = 1;  in WritePNGImage()
12157                 mng_info->write_png_depth = 2;  in WritePNGImage()
12160                 mng_info->write_png_depth = 4;  in WritePNGImage()
12163                 mng_info->write_png_depth = 8;  in WritePNGImage()
12166                 mng_info->write_png_depth = 16;  in WritePNGImage()
12197       mng_info->write_png_depth = 8;  in WritePNGImage()
12204       mng_info->write_png_depth = 8;  in WritePNGImage()
12219       mng_info->write_png_depth = 8;  in WritePNGImage()
12230       mng_info->write_png_depth = 16;  in WritePNGImage()
12245       mng_info->write_png_depth = 16;  in WritePNGImage()
12258         mng_info->write_png_depth = 1;  in WritePNGImage()
12261         mng_info->write_png_depth = 2;  in WritePNGImage()
12264         mng_info->write_png_depth = 4;  in WritePNGImage()
12267         mng_info->write_png_depth = 8;  in WritePNGImage()
12270         mng_info->write_png_depth = 16;  in WritePNGImage()
12280           "  png:bit-depth=%d was defined.\n",mng_info->write_png_depth);  in WritePNGImage()