2080 png_do_read_transformations(png_structp png_ptr, png_row_infop row_info)  in png_do_read_transformations()  argument
2111       if (row_info->color_type == PNG_COLOR_TYPE_PALETTE)  in png_do_read_transformations()
2113          png_do_expand_palette(row_info, png_ptr->row_buf + 1,  in png_do_read_transformations()
2121             png_do_expand(row_info, png_ptr->row_buf + 1,  in png_do_read_transformations()
2125             png_do_expand(row_info, png_ptr->row_buf + 1,  in png_do_read_transformations()
2134       (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||  in png_do_read_transformations()
2135       row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA))  in png_do_read_transformations()
2136       png_do_strip_channel(row_info, png_ptr->row_buf + 1,  in png_do_read_transformations()
2144           png_do_rgb_to_gray(png_ptr, row_info,  in png_do_read_transformations()
2198       png_do_gray_to_rgb(row_info, png_ptr->row_buf + 1);  in png_do_read_transformations()
2204       png_do_compose(row_info, png_ptr->row_buf + 1, png_ptr);  in png_do_read_transformations()
2226       png_do_gamma(row_info, png_ptr->row_buf + 1, png_ptr);  in png_do_read_transformations()
2232       (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||  in png_do_read_transformations()
2233       row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA))  in png_do_read_transformations()
2234       png_do_strip_channel(row_info, png_ptr->row_buf + 1,  in png_do_read_transformations()
2240       (row_info->color_type & PNG_COLOR_MASK_ALPHA))  in png_do_read_transformations()
2241       png_do_encode_alpha(row_info, png_ptr->row_buf + 1, png_ptr);  in png_do_read_transformations()
2246       png_do_scale_16_to_8(row_info, png_ptr->row_buf + 1);  in png_do_read_transformations()
2255       png_do_chop(row_info, png_ptr->row_buf + 1);  in png_do_read_transformations()
2261       png_do_quantize(row_info, png_ptr->row_buf + 1,  in png_do_read_transformations()
2264       if (row_info->rowbytes == 0)  in png_do_read_transformations()
2276       png_do_expand_16(row_info, png_ptr->row_buf + 1);  in png_do_read_transformations()
2283       png_do_gray_to_rgb(row_info, png_ptr->row_buf + 1);  in png_do_read_transformations()
2288       png_do_invert(row_info, png_ptr->row_buf + 1);  in png_do_read_transformations()
2293       png_do_unshift(row_info, png_ptr->row_buf + 1,  in png_do_read_transformations()
2299       png_do_unpack(row_info, png_ptr->row_buf + 1);  in png_do_read_transformations()
2304    if (row_info->color_type == PNG_COLOR_TYPE_PALETTE &&  in png_do_read_transformations()
2306       png_do_check_palette_indexes(png_ptr, row_info);  in png_do_read_transformations()
2311       png_do_bgr(row_info, png_ptr->row_buf + 1);  in png_do_read_transformations()
2316       png_do_packswap(row_info, png_ptr->row_buf + 1);  in png_do_read_transformations()
2321       png_do_read_filler(row_info, png_ptr->row_buf + 1,  in png_do_read_transformations()
2327       png_do_read_invert_alpha(row_info, png_ptr->row_buf + 1);  in png_do_read_transformations()
2332       png_do_read_swap_alpha(row_info, png_ptr->row_buf + 1);  in png_do_read_transformations()
2338       png_do_swap(row_info, png_ptr->row_buf + 1);  in png_do_read_transformations()
2348              row_info,     /* row_info: */  in png_do_read_transformations()
2358          row_info->bit_depth = png_ptr->user_transform_depth;  in png_do_read_transformations()
2361          row_info->channels = png_ptr->user_transform_channels;  in png_do_read_transformations()
2363       row_info->pixel_depth = (png_byte)(row_info->bit_depth *  in png_do_read_transformations()
2364           row_info->channels);  in png_do_read_transformations()
2366       row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_info->width);  in png_do_read_transformations()
2379 png_do_unpack(png_row_infop row_info, png_bytep row)  in png_do_unpack()  argument
2383    if (row_info->bit_depth < 8)  in png_do_unpack()
2386       png_uint_32 row_width=row_info->width;  in png_do_unpack()
2388       switch (row_info->bit_depth)  in png_do_unpack()
2463       row_info->bit_depth = 8;  in png_do_unpack()
2464       row_info->pixel_depth = (png_byte)(8 * row_info->channels);  in png_do_unpack()
2465       row_info->rowbytes = row_width * row_info->channels;  in png_do_unpack()
2477 png_do_unshift(png_row_infop row_info, png_bytep row,  in png_do_unshift()  argument
2485    color_type = row_info->color_type;  in png_do_unshift()
2491       int bit_depth = row_info->bit_depth;  in png_do_unshift()
2541             png_bytep bp_end = bp + row_info->rowbytes;  in png_do_unshift()
2556             png_bytep bp_end = bp + row_info->rowbytes;  in png_do_unshift()
2574             png_bytep bp_end = bp + row_info->rowbytes;  in png_do_unshift()
2592             png_bytep bp_end = bp + row_info->rowbytes;  in png_do_unshift()
2616 png_do_scale_16_to_8(png_row_infop row_info, png_bytep row)  in png_do_scale_16_to_8()  argument
2620    if (row_info->bit_depth == 16)  in png_do_scale_16_to_8()
2624       png_bytep ep = sp + row_info->rowbytes; /* end+1 */  in png_do_scale_16_to_8()
2665       row_info->bit_depth = 8;  in png_do_scale_16_to_8()
2666       row_info->pixel_depth = (png_byte)(8 * row_info->channels);  in png_do_scale_16_to_8()
2667       row_info->rowbytes = row_info->width * row_info->channels;  in png_do_scale_16_to_8()
2677 png_do_chop(png_row_infop row_info, png_bytep row)  in png_do_chop()  argument
2681    if (row_info->bit_depth == 16)  in png_do_chop()
2685       png_bytep ep = sp + row_info->rowbytes; /* end+1 */  in png_do_chop()
2693       row_info->bit_depth = 8;  in png_do_chop()
2694       row_info->pixel_depth = (png_byte)(8 * row_info->channels);  in png_do_chop()
2695       row_info->rowbytes = row_info->width * row_info->channels;  in png_do_chop()
2702 png_do_read_swap_alpha(png_row_infop row_info, png_bytep row)  in png_do_read_swap_alpha()  argument
2707       png_uint_32 row_width = row_info->width;  in png_do_read_swap_alpha()
2708       if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)  in png_do_read_swap_alpha()
2711          if (row_info->bit_depth == 8)  in png_do_read_swap_alpha()
2713             png_bytep sp = row + row_info->rowbytes;  in png_do_read_swap_alpha()
2732             png_bytep sp = row + row_info->rowbytes;  in png_do_read_swap_alpha()
2754       else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)  in png_do_read_swap_alpha()
2757          if (row_info->bit_depth == 8)  in png_do_read_swap_alpha()
2759             png_bytep sp = row + row_info->rowbytes;  in png_do_read_swap_alpha()
2776             png_bytep sp = row + row_info->rowbytes;  in png_do_read_swap_alpha()
2799 png_do_read_invert_alpha(png_row_infop row_info, png_bytep row)  in png_do_read_invert_alpha()  argument
2804    row_width = row_info->width;  in png_do_read_invert_alpha()
2805    if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)  in png_do_read_invert_alpha()
2807       if (row_info->bit_depth == 8)  in png_do_read_invert_alpha()
2810          png_bytep sp = row + row_info->rowbytes;  in png_do_read_invert_alpha()
2833          png_bytep sp = row + row_info->rowbytes;  in png_do_read_invert_alpha()
2857    else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)  in png_do_read_invert_alpha()
2859       if (row_info->bit_depth == 8)  in png_do_read_invert_alpha()
2862          png_bytep sp = row + row_info->rowbytes;  in png_do_read_invert_alpha()
2877          png_bytep sp  = row + row_info->rowbytes;  in png_do_read_invert_alpha()
2901 png_do_read_filler(png_row_infop row_info, png_bytep row,  in png_do_read_filler()  argument
2905    png_uint_32 row_width = row_info->width;  in png_do_read_filler()
2915        row_info->color_type == PNG_COLOR_TYPE_GRAY)  in png_do_read_filler()
2917       if (row_info->bit_depth == 8)  in png_do_read_filler()
2930             row_info->channels = 2;  in png_do_read_filler()
2931             row_info->pixel_depth = 16;  in png_do_read_filler()
2932             row_info->rowbytes = row_width * 2;  in png_do_read_filler()
2945             row_info->channels = 2;  in png_do_read_filler()
2946             row_info->pixel_depth = 16;  in png_do_read_filler()
2947             row_info->rowbytes = row_width * 2;  in png_do_read_filler()
2952       else if (row_info->bit_depth == 16)  in png_do_read_filler()
2968             row_info->channels = 2;  in png_do_read_filler()
2969             row_info->pixel_depth = 32;  in png_do_read_filler()
2970             row_info->rowbytes = row_width * 4;  in png_do_read_filler()
2985             row_info->channels = 2;  in png_do_read_filler()
2986             row_info->pixel_depth = 32;  in png_do_read_filler()
2987             row_info->rowbytes = row_width * 4;  in png_do_read_filler()
2992    else if (row_info->color_type == PNG_COLOR_TYPE_RGB)  in png_do_read_filler()
2994       if (row_info->bit_depth == 8)  in png_do_read_filler()
3009             row_info->channels = 4;  in png_do_read_filler()
3010             row_info->pixel_depth = 32;  in png_do_read_filler()
3011             row_info->rowbytes = row_width * 4;  in png_do_read_filler()
3026             row_info->channels = 4;  in png_do_read_filler()
3027             row_info->pixel_depth = 32;  in png_do_read_filler()
3028             row_info->rowbytes = row_width * 4;  in png_do_read_filler()
3033       else if (row_info->bit_depth == 16)  in png_do_read_filler()
3053             row_info->channels = 4;  in png_do_read_filler()
3054             row_info->pixel_depth = 64;  in png_do_read_filler()
3055             row_info->rowbytes = row_width * 8;  in png_do_read_filler()
3075             row_info->channels = 4;  in png_do_read_filler()
3076             row_info->pixel_depth = 64;  in png_do_read_filler()
3077             row_info->rowbytes = row_width * 8;  in png_do_read_filler()
3088 png_do_gray_to_rgb(png_row_infop row_info, png_bytep row)  in png_do_gray_to_rgb()  argument
3091    png_uint_32 row_width = row_info->width;  in png_do_gray_to_rgb()
3095    if (row_info->bit_depth >= 8 &&  in png_do_gray_to_rgb()
3096        !(row_info->color_type & PNG_COLOR_MASK_COLOR))  in png_do_gray_to_rgb()
3098       if (row_info->color_type == PNG_COLOR_TYPE_GRAY)  in png_do_gray_to_rgb()
3100          if (row_info->bit_depth == 8)  in png_do_gray_to_rgb()
3130       else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)  in png_do_gray_to_rgb()
3132          if (row_info->bit_depth == 8)  in png_do_gray_to_rgb()
3164       row_info->channels = (png_byte)(row_info->channels + 2);  in png_do_gray_to_rgb()
3165       row_info->color_type |= PNG_COLOR_MASK_COLOR;  in png_do_gray_to_rgb()
3166       row_info->pixel_depth = (png_byte)(row_info->channels *  in png_do_gray_to_rgb()
3167           row_info->bit_depth);  in png_do_gray_to_rgb()
3168       row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);  in png_do_gray_to_rgb()
3227 png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)  in png_do_rgb_to_gray()  argument
3234    if (!(row_info->color_type & PNG_COLOR_MASK_PALETTE) &&  in png_do_rgb_to_gray()
3235        (row_info->color_type & PNG_COLOR_MASK_COLOR))  in png_do_rgb_to_gray()
3240       PNG_CONST png_uint_32 row_width = row_info->width;  in png_do_rgb_to_gray()
3242          (row_info->color_type & PNG_COLOR_MASK_ALPHA) != 0;  in png_do_rgb_to_gray()
3244       if (row_info->bit_depth == 8)  in png_do_rgb_to_gray()
3410       row_info->channels = (png_byte)(row_info->channels - 2);  in png_do_rgb_to_gray()
3411       row_info->color_type = (png_byte)(row_info->color_type &  in png_do_rgb_to_gray()
3413       row_info->pixel_depth = (png_byte)(row_info->channels *  in png_do_rgb_to_gray()
3414           row_info->bit_depth);  in png_do_rgb_to_gray()
3415       row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);  in png_do_rgb_to_gray()
3487 png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)  in png_do_compose()  argument
3501    png_uint_32 row_width = row_info->width;  in png_do_compose()
3508       switch (row_info->color_type)  in png_do_compose()
3512             switch (row_info->bit_depth)  in png_do_compose()
3752             if (row_info->bit_depth == 8)  in png_do_compose()
3879             if (row_info->bit_depth == 8)  in png_do_compose()
4004             if (row_info->bit_depth == 8)  in png_do_compose()
4220 png_do_gamma(png_row_infop row_info, png_bytep row, png_structp png_ptr)  in png_do_gamma()  argument
4228    png_uint_32 row_width=row_info->width;  in png_do_gamma()
4232    if (((row_info->bit_depth <= 8 && gamma_table != NULL) ||  in png_do_gamma()
4233        (row_info->bit_depth == 16 && gamma_16_table != NULL)))  in png_do_gamma()
4235       switch (row_info->color_type)  in png_do_gamma()
4239             if (row_info->bit_depth == 8)  in png_do_gamma()
4281             if (row_info->bit_depth == 8)  in png_do_gamma()
4325             if (row_info->bit_depth == 8)  in png_do_gamma()
4351             if (row_info->bit_depth == 2)  in png_do_gamma()
4370             if (row_info->bit_depth == 4)  in png_do_gamma()
4384             else if (row_info->bit_depth == 8)  in png_do_gamma()
4394             else if (row_info->bit_depth == 16)  in png_do_gamma()
4421 png_do_encode_alpha(png_row_infop row_info, png_bytep row, png_structp png_ptr)  in png_do_encode_alpha()  argument
4423    png_uint_32 row_width = row_info->width;  in png_do_encode_alpha()
4427    if (row_info->color_type & PNG_COLOR_MASK_ALPHA)  in png_do_encode_alpha()
4429       if (row_info->bit_depth == 8)  in png_do_encode_alpha()
4436                (row_info->color_type & PNG_COLOR_MASK_COLOR) ? 4 : 2;  in png_do_encode_alpha()
4448       else if (row_info->bit_depth == 16)  in png_do_encode_alpha()
4456                (row_info->color_type & PNG_COLOR_MASK_COLOR) ? 8 : 4;  in png_do_encode_alpha()
4487 png_do_expand_palette(png_row_infop row_info, png_bytep row,  in png_do_expand_palette()  argument
4493    png_uint_32 row_width=row_info->width;  in png_do_expand_palette()
4497    if (row_info->color_type == PNG_COLOR_TYPE_PALETTE)  in png_do_expand_palette()
4499       if (row_info->bit_depth < 8)  in png_do_expand_palette()
4501          switch (row_info->bit_depth)  in png_do_expand_palette()
4579          row_info->bit_depth = 8;  in png_do_expand_palette()
4580          row_info->pixel_depth = 8;  in png_do_expand_palette()
4581          row_info->rowbytes = row_width;  in png_do_expand_palette()
4584       if (row_info->bit_depth == 8)  in png_do_expand_palette()
4605                row_info->bit_depth = 8;  in png_do_expand_palette()
4606                row_info->pixel_depth = 32;  in png_do_expand_palette()
4607                row_info->rowbytes = row_width * 4;  in png_do_expand_palette()
4608                row_info->color_type = 6;  in png_do_expand_palette()
4609                row_info->channels = 4;  in png_do_expand_palette()
4625                row_info->bit_depth = 8;  in png_do_expand_palette()
4626                row_info->pixel_depth = 24;  in png_do_expand_palette()
4627                row_info->rowbytes = row_width * 3;  in png_do_expand_palette()
4628                row_info->color_type = 2;  in png_do_expand_palette()
4629                row_info->channels = 3;  in png_do_expand_palette()
4640 png_do_expand(png_row_infop row_info, png_bytep row,  in png_do_expand()  argument
4646    png_uint_32 row_width=row_info->width;  in png_do_expand()
4651       if (row_info->color_type == PNG_COLOR_TYPE_GRAY)  in png_do_expand()
4655          if (row_info->bit_depth < 8)  in png_do_expand()
4657             switch (row_info->bit_depth)  in png_do_expand()
4740             row_info->bit_depth = 8;  in png_do_expand()
4741             row_info->pixel_depth = 8;  in png_do_expand()
4742             row_info->rowbytes = row_width;  in png_do_expand()
4747             if (row_info->bit_depth == 8)  in png_do_expand()
4765             else if (row_info->bit_depth == 16)  in png_do_expand()
4769                sp = row + row_info->rowbytes - 1;  in png_do_expand()
4770                dp = row + (row_info->rowbytes << 1) - 1;  in png_do_expand()
4790             row_info->color_type = PNG_COLOR_TYPE_GRAY_ALPHA;  in png_do_expand()
4791             row_info->channels = 2;  in png_do_expand()
4792             row_info->pixel_depth = (png_byte)(row_info->bit_depth << 1);  in png_do_expand()
4793             row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,  in png_do_expand()
4797       else if (row_info->color_type == PNG_COLOR_TYPE_RGB && trans_color)  in png_do_expand()
4799          if (row_info->bit_depth == 8)  in png_do_expand()
4804             sp = row + (png_size_t)row_info->rowbytes - 1;  in png_do_expand()
4819          else if (row_info->bit_depth == 16)  in png_do_expand()
4827             sp = row + row_info->rowbytes - 1;  in png_do_expand()
4856          row_info->color_type = PNG_COLOR_TYPE_RGB_ALPHA;  in png_do_expand()
4857          row_info->channels = 4;  in png_do_expand()
4858          row_info->pixel_depth = (png_byte)(row_info->bit_depth << 2);  in png_do_expand()
4859          row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);  in png_do_expand()
4870 png_do_expand_16(png_row_infop row_info, png_bytep row)  in png_do_expand_16()  argument
4872    if (row_info->bit_depth == 8 &&  in png_do_expand_16()
4873       row_info->color_type != PNG_COLOR_TYPE_PALETTE)  in png_do_expand_16()
4884       png_byte *sp = row + row_info->rowbytes; /* source, last byte + 1 */  in png_do_expand_16()
4885       png_byte *dp = sp + row_info->rowbytes;  /* destination, end + 1 */  in png_do_expand_16()
4889       row_info->rowbytes *= 2;  in png_do_expand_16()
4890       row_info->bit_depth = 16;  in png_do_expand_16()
4891       row_info->pixel_depth = (png_byte)(row_info->channels * 16);  in png_do_expand_16()
4898 png_do_quantize(png_row_infop row_info, png_bytep row,  in png_do_quantize()  argument
4903    png_uint_32 row_width=row_info->width;  in png_do_quantize()
4907    if (row_info->bit_depth == 8)  in png_do_quantize()
4909       if (row_info->color_type == PNG_COLOR_TYPE_RGB && palette_lookup)  in png_do_quantize()
4939          row_info->color_type = PNG_COLOR_TYPE_PALETTE;  in png_do_quantize()
4940          row_info->channels = 1;  in png_do_quantize()
4941          row_info->pixel_depth = row_info->bit_depth;  in png_do_quantize()
4942          row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);  in png_do_quantize()
4945       else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&  in png_do_quantize()
4970          row_info->color_type = PNG_COLOR_TYPE_PALETTE;  in png_do_quantize()
4971          row_info->channels = 1;  in png_do_quantize()
4972          row_info->pixel_depth = row_info->bit_depth;  in png_do_quantize()
4973          row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);  in png_do_quantize()
4976       else if (row_info->color_type == PNG_COLOR_TYPE_PALETTE &&  in png_do_quantize()
4994 png_do_read_intrapixel(png_row_infop row_info, png_bytep row)  in png_do_read_intrapixel()  argument
4999        (row_info->color_type & PNG_COLOR_MASK_COLOR))  in png_do_read_intrapixel()
5002       png_uint_32 row_width = row_info->width;  in png_do_read_intrapixel()
5004       if (row_info->bit_depth == 8)  in png_do_read_intrapixel()
5009          if (row_info->color_type == PNG_COLOR_TYPE_RGB)  in png_do_read_intrapixel()
5012          else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)  in png_do_read_intrapixel()
5024       else if (row_info->bit_depth == 16)  in png_do_read_intrapixel()
5029          if (row_info->color_type == PNG_COLOR_TYPE_RGB)  in png_do_read_intrapixel()
5032          else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)  in png_do_read_intrapixel()