176 count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data);
181 count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)  in count_filters()  argument
183    if (png_ptr != NULL && row_info != NULL)  in count_filters()
199 count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data);
204 count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)  in count_zero_samples()  argument
220     if (row_info->color_type == 0 || row_info->color_type == 3)  in count_zero_samples()
224        for (n = 0, nstop=row_info->width; n<nstop; n++)  in count_zero_samples()
226           if (row_info->bit_depth == 1)  in count_zero_samples()
236           if (row_info->bit_depth == 2)  in count_zero_samples()
246           if (row_info->bit_depth == 4)  in count_zero_samples()
256           if (row_info->bit_depth == 8)  in count_zero_samples()
259           if (row_info->bit_depth == 16)  in count_zero_samples()
271        int color_channels = row_info->channels;  in count_zero_samples()
272        if (row_info->color_type > 3)color_channels--;  in count_zero_samples()
274        for (n = 0, nstop=row_info->width; n<nstop; n++)  in count_zero_samples()
278              if (row_info->bit_depth == 8)  in count_zero_samples()
281              if (row_info->bit_depth == 16)  in count_zero_samples()
288           if (row_info->color_type > 3)  in count_zero_samples()
291              if (row_info->bit_depth == 16)  in count_zero_samples()