1752    png_ptr->row_buf = (png_bytep)png_malloc(png_ptr, (png_uint_32)buf_size);  in png_write_start_row()
1753    png_ptr->row_buf[0] = PNG_FILTER_VALUE_NONE;  in png_write_start_row()
2113    png_bytep prev_row, best_row, row_buf;  in png_write_find_filter()  local
2126    best_row = row_buf = png_ptr->row_buf;  in png_write_find_filter()
2163       for (i = 0, rp = row_buf + 1; i < row_bytes; i++, rp++)  in png_write_find_filter()
2213       for (i = 0, rp = row_buf + 1, dp = png_ptr->sub_row + 1; i < bpp;  in png_write_find_filter()
2218       for (lp = row_buf + 1; i < row_bytes;  in png_write_find_filter()
2268       for (i = 0, rp = row_buf + 1, dp = png_ptr->sub_row + 1; i < bpp;  in png_write_find_filter()
2275       for (lp = row_buf + 1; i < row_bytes;  in png_write_find_filter()
2330       for (i = 0, rp = row_buf + 1, dp = png_ptr->up_row + 1,  in png_write_find_filter()
2378       for (i = 0, rp = row_buf + 1, dp = png_ptr->up_row + 1,  in png_write_find_filter()
2432       for (i = 0, rp = row_buf + 1, dp = png_ptr->avg_row + 1,  in png_write_find_filter()
2437       for (lp = row_buf + 1; i < row_bytes; i++)  in png_write_find_filter()
2483       for (i = 0, rp = row_buf + 1, dp = png_ptr->avg_row + 1,  in png_write_find_filter()
2490       for (lp = row_buf + 1; i < row_bytes; i++)  in png_write_find_filter()
2544       for (i = 0, rp = row_buf + 1, dp = png_ptr->paeth_row + 1,  in png_write_find_filter()
2550       for (lp = row_buf + 1, cp = prev_row + 1; i < row_bytes; i++)  in png_write_find_filter()
2616       for (i = 0, rp = row_buf + 1, dp = png_ptr->paeth_row + 1,  in png_write_find_filter()
2624       for (lp = row_buf + 1, cp = prev_row + 1; i < row_bytes; i++)  in png_write_find_filter()
2765       png_ptr->prev_row = png_ptr->row_buf;  in png_write_filtered_row()
2766       png_ptr->row_buf = tptr;  in png_write_filtered_row()