| /* -*- Mode: c; c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t; -*- */ |
| /* |
| * Copyright © 2011 Red Hat, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| */ |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| #include <string.h> |
| #include <stdlib.h> |
| #include "pixman-private.h" |
| #include "pixman-combine32.h" |
| #include "pixman-inlines.h" |
| |
| static void |
| noop_composite (pixman_implementation_t *imp, |
| pixman_composite_info_t *info) |
| { |
| return; |
| } |
| |
| static void |
| dest_write_back_direct (pixman_iter_t *iter) |
| { |
| iter->buffer += iter->image->bits.rowstride; |
| } |
| |
| static uint32_t * |
| noop_get_scanline (pixman_iter_t *iter, const uint32_t *mask) |
| { |
| uint32_t *result = iter->buffer; |
| |
| iter->buffer += iter->image->bits.rowstride; |
| |
| return result; |
| } |
| |
| static uint32_t * |
| get_scanline_null (pixman_iter_t *iter, const uint32_t *mask) |
| { |
| return NULL; |
| } |
| |
| static void |
| noop_src_iter_init (pixman_implementation_t *imp, pixman_iter_t *iter) |
| { |
| pixman_image_t *image = iter->image; |
| |
| #define FLAGS \ |
| (FAST_PATH_STANDARD_FLAGS | FAST_PATH_ID_TRANSFORM) |
| |
| if (!image) |
| { |
| iter->get_scanline = get_scanline_null; |
| } |
| else if ((iter->flags & (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB)) == |
| (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB)) |
| { |
| iter->get_scanline = _pixman_iter_get_scanline_noop; |
| } |
| else if (image->common.extended_format_code == PIXMAN_solid && |
| ((image->common.flags & (FAST_PATH_BITS_IMAGE | FAST_PATH_NO_ALPHA_MAP)) == |
| (FAST_PATH_BITS_IMAGE | FAST_PATH_NO_ALPHA_MAP))) |
| { |
| bits_image_t *bits = &image->bits; |
| |
| if (iter->flags & ITER_NARROW) |
| { |
| uint32_t color = bits->fetch_pixel_32 (bits, 0, 0); |
| uint32_t *buffer = iter->buffer; |
| uint32_t *end = buffer + iter->width; |
| |
| while (buffer < end) |
| *(buffer++) = color; |
| } |
| else |
| { |
| uint64_t color = bits->fetch_pixel_64 (bits, 0, 0); |
| uint64_t *buffer = (uint64_t *)iter->buffer; |
| uint64_t *end = buffer + iter->width; |
| |
| while (buffer < end) |
| *(buffer++) = color; |
| } |
| |
| iter->get_scanline = _pixman_iter_get_scanline_noop; |
| } |
| else if (image->common.extended_format_code == PIXMAN_a8r8g8b8 && |
| (iter->flags & ITER_NARROW) && |
| (image->common.flags & FLAGS) == FLAGS && |
| iter->x >= 0 && iter->y >= 0 && |
| iter->x + iter->width <= image->bits.width && |
| iter->y + iter->height <= image->bits.height) |
| { |
| iter->buffer = |
| image->bits.bits + iter->y * image->bits.rowstride + iter->x; |
| |
| iter->get_scanline = noop_get_scanline; |
| } |
| else |
| { |
| (* imp->delegate->src_iter_init) (imp->delegate, iter); |
| } |
| } |
| |
| static void |
| noop_dest_iter_init (pixman_implementation_t *imp, pixman_iter_t *iter) |
| { |
| pixman_image_t *image = iter->image; |
| uint32_t image_flags = image->common.flags; |
| uint32_t iter_flags = iter->flags; |
| |
| if ((image_flags & FAST_PATH_STD_DEST_FLAGS) == FAST_PATH_STD_DEST_FLAGS && |
| (iter_flags & ITER_NARROW) == ITER_NARROW && |
| ((image->common.extended_format_code == PIXMAN_a8r8g8b8) || |
| (image->common.extended_format_code == PIXMAN_x8r8g8b8 && |
| (iter_flags & (ITER_LOCALIZED_ALPHA))))) |
| { |
| iter->buffer = image->bits.bits + iter->y * image->bits.rowstride + iter->x; |
| |
| iter->get_scanline = _pixman_iter_get_scanline_noop; |
| iter->write_back = dest_write_back_direct; |
| } |
| else |
| { |
| (* imp->delegate->dest_iter_init) (imp->delegate, iter); |
| } |
| } |
| |
| static const pixman_fast_path_t noop_fast_paths[] = |
| { |
| { PIXMAN_OP_DST, PIXMAN_any, 0, PIXMAN_any, 0, PIXMAN_any, 0, noop_composite }, |
| { PIXMAN_OP_NONE }, |
| }; |
| |
| pixman_implementation_t * |
| _pixman_implementation_create_noop (pixman_implementation_t *fallback) |
| { |
| pixman_implementation_t *imp = |
| _pixman_implementation_create (fallback, noop_fast_paths); |
| |
| imp->src_iter_init = noop_src_iter_init; |
| imp->dest_iter_init = noop_dest_iter_init; |
| |
| return imp; |
| } |