diff options
Diffstat (limited to 'pixman/pixman-noop.c')
| -rw-r--r-- | pixman/pixman-noop.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/pixman/pixman-noop.c b/pixman/pixman-noop.c new file mode 100644 index 0000000..e39996d --- /dev/null +++ b/pixman/pixman-noop.c @@ -0,0 +1,176 @@ +/* -*- 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 pixman_bool_t +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->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 && + (iter->image->type == SOLID || + (iter->image_flags & FAST_PATH_NO_ALPHA_MAP))) + { + if (iter->iter_flags & ITER_NARROW) + { + uint32_t *buffer = iter->buffer; + uint32_t *end = buffer + iter->width; + uint32_t color; + + if (image->type == SOLID) + color = image->solid.color_32; + else + color = image->bits.fetch_pixel_32 (&image->bits, 0, 0); + + while (buffer < end) + *(buffer++) = color; + } + else + { + argb_t *buffer = (argb_t *)iter->buffer; + argb_t *end = buffer + iter->width; + argb_t color; + + if (image->type == SOLID) + color = image->solid.color_float; + else + color = image->bits.fetch_pixel_float (&image->bits, 0, 0); + + while (buffer < end) + *(buffer++) = color; + } + + iter->get_scanline = _pixman_iter_get_scanline_noop; + } + else if (image->common.extended_format_code == PIXMAN_a8r8g8b8 && + (iter->iter_flags & ITER_NARROW) && + (iter->image_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 + { + return FALSE; + } + + return TRUE; +} + +static pixman_bool_t +noop_dest_iter_init (pixman_implementation_t *imp, pixman_iter_t *iter) +{ + pixman_image_t *image = iter->image; + uint32_t image_flags = iter->image_flags; + uint32_t iter_flags = iter->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; + + return TRUE; + } + else + { + return FALSE; + } +} + +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; +} |