diff options
Diffstat (limited to 'pixman/pixman/pixman-bits-image.c')
| -rw-r--r-- | pixman/pixman/pixman-bits-image.c | 235 |
1 files changed, 201 insertions, 34 deletions
diff --git a/pixman/pixman/pixman-bits-image.c b/pixman/pixman/pixman-bits-image.c index c453e0ee6..a865d719a 100644 --- a/pixman/pixman/pixman-bits-image.c +++ b/pixman/pixman/pixman-bits-image.c @@ -35,43 +35,41 @@ #include "pixman-private.h" #include "pixman-combine32.h" -/* Store functions */ -void -_pixman_image_store_scanline_32 (bits_image_t * image, - int x, - int y, - int width, - const uint32_t *buffer) +/* + * By default, just evaluate the image at 32bpp and expand. Individual image + * types can plug in a better scanline getter if they want to. For example + * we could produce smoother gradients by evaluating them at higher color + * depth, but that's a project for the future. + */ +static void +_pixman_image_get_scanline_generic_64 (pixman_image_t * image, + int x, + int y, + int width, + uint32_t * buffer, + const uint32_t * mask) { - image->store_scanline_32 (image, x, y, width, buffer); + uint32_t *mask8 = NULL; - if (image->common.alpha_map) + /* Contract the mask image, if one exists, so that the 32-bit fetch + * function can use it. + */ + if (mask) { - x -= image->common.alpha_origin_x; - y -= image->common.alpha_origin_y; + mask8 = pixman_malloc_ab (width, sizeof(uint32_t)); + if (!mask8) + return; - image->common.alpha_map->store_scanline_32 ( - image->common.alpha_map, x, y, width, buffer); + pixman_contract (mask8, (uint64_t *)mask, width); } -} -void -_pixman_image_store_scanline_64 (bits_image_t * image, - int x, - int y, - int width, - const uint32_t *buffer) -{ - image->store_scanline_64 (image, x, y, width, buffer); + /* Fetch the source image into the first half of buffer. */ + image->bits.get_scanline_32 (image, x, y, width, (uint32_t*)buffer, mask8); - if (image->common.alpha_map) - { - x -= image->common.alpha_origin_x; - y -= image->common.alpha_origin_y; + /* Expand from 32bpp to 64bpp in place. */ + pixman_expand ((uint64_t *)buffer, buffer, PIXMAN_a8r8g8b8, width); - image->common.alpha_map->store_scanline_64 ( - image->common.alpha_map, x, y, width, buffer); - } + free (mask8); } /* Fetch functions */ @@ -297,6 +295,7 @@ bits_image_fetch_bilinear_no_repeat_8888 (pixman_image_t * ima, uint32_t *bottom_row; uint32_t *end; uint32_t zero[2] = { 0, 0 }; + uint32_t one = 1; int y, y1, y2; int disty; int mask_inc; @@ -362,10 +361,8 @@ bits_image_fetch_bilinear_no_repeat_8888 (pixman_image_t * ima, */ if (!mask) { - uint32_t mask_bits = 1; - mask_inc = 0; - mask = &mask_bits; + mask = &one; } else { @@ -1337,8 +1334,8 @@ bits_image_property_changed (pixman_image_t *image) if ((info->format == format || info->format == PIXMAN_any) && (info->flags & flags) == info->flags) { - image->common.get_scanline_32 = info->fetch_32; - image->common.get_scanline_64 = info->fetch_64; + image->bits.get_scanline_32 = info->fetch_32; + image->bits.get_scanline_64 = info->fetch_64; break; } @@ -1347,6 +1344,176 @@ bits_image_property_changed (pixman_image_t *image) } static uint32_t * +src_get_scanline_narrow (pixman_iter_t *iter, const uint32_t *mask) +{ + iter->image->bits.get_scanline_32 ( + iter->image, iter->x, iter->y++, iter->width, iter->buffer, mask); + + return iter->buffer; +} + +static uint32_t * +src_get_scanline_wide (pixman_iter_t *iter, const uint32_t *mask) +{ + iter->image->bits.get_scanline_64 ( + iter->image, iter->x, iter->y++, iter->width, iter->buffer, mask); + + return iter->buffer; +} + +void +_pixman_bits_image_src_iter_init (pixman_image_t *image, + pixman_iter_t *iter, + int x, int y, int width, int height, + uint8_t *buffer, iter_flags_t flags) +{ + if (flags & ITER_NARROW) + iter->get_scanline = src_get_scanline_narrow; + else + iter->get_scanline = src_get_scanline_wide; +} + +static uint32_t * +dest_get_scanline_narrow (pixman_iter_t *iter, const uint32_t *mask) +{ + pixman_image_t *image = iter->image; + int x = iter->x; + int y = iter->y; + int width = iter->width; + uint32_t * buffer = iter->buffer; + + image->bits.fetch_scanline_32 (image, x, y, width, buffer, mask); + if (image->common.alpha_map) + { + x -= image->common.alpha_origin_x; + y -= image->common.alpha_origin_y; + + image->common.alpha_map->fetch_scanline_32 ( + (pixman_image_t *)image->common.alpha_map, + x, y, width, buffer, mask); + } + + return iter->buffer; +} + +static uint32_t * +dest_get_scanline_wide (pixman_iter_t *iter, const uint32_t *mask) +{ + bits_image_t * image = &iter->image->bits; + int x = iter->x; + int y = iter->y; + int width = iter->width; + uint32_t * buffer = iter->buffer; + + image->fetch_scanline_64 ( + (pixman_image_t *)image, x, y, width, buffer, mask); + if (image->common.alpha_map) + { + x -= image->common.alpha_origin_x; + y -= image->common.alpha_origin_y; + + image->common.alpha_map->fetch_scanline_64 ( + (pixman_image_t *)image->common.alpha_map, x, y, width, buffer, mask); + } + + return iter->buffer; +} + +static void +dest_write_back_narrow (pixman_iter_t *iter) +{ + bits_image_t * image = &iter->image->bits; + int x = iter->x; + int y = iter->y; + int width = iter->width; + const uint32_t *buffer = iter->buffer; + + image->store_scanline_32 (image, x, y, width, buffer); + + if (image->common.alpha_map) + { + x -= image->common.alpha_origin_x; + y -= image->common.alpha_origin_y; + + image->common.alpha_map->store_scanline_32 ( + image->common.alpha_map, x, y, width, buffer); + } + + iter->y++; +} + +static void +dest_write_back_wide (pixman_iter_t *iter) +{ + bits_image_t * image = &iter->image->bits; + int x = iter->x; + int y = iter->y; + int width = iter->width; + const uint32_t *buffer = iter->buffer; + + image->store_scanline_64 (image, x, y, width, buffer); + + if (image->common.alpha_map) + { + x -= image->common.alpha_origin_x; + y -= image->common.alpha_origin_y; + + image->common.alpha_map->store_scanline_64 ( + image->common.alpha_map, x, y, width, buffer); + } + + iter->y++; +} + +static void +dest_write_back_direct (pixman_iter_t *iter) +{ + iter->buffer += iter->image->bits.rowstride; +} + +void +_pixman_bits_image_dest_iter_init (pixman_image_t *image, + pixman_iter_t *iter, + int x, int y, int width, int height, + uint8_t *buffer, iter_flags_t flags) +{ + if (flags & ITER_NARROW) + { + if (((image->common.flags & + (FAST_PATH_NO_ALPHA_MAP | FAST_PATH_NO_ACCESSORS)) == + (FAST_PATH_NO_ALPHA_MAP | FAST_PATH_NO_ACCESSORS)) && + (image->bits.format == PIXMAN_a8r8g8b8 || + (image->bits.format == PIXMAN_x8r8g8b8 && + (flags & ITER_LOCALIZED_ALPHA)))) + { + iter->buffer = image->bits.bits + y * image->bits.rowstride + x; + + iter->get_scanline = _pixman_iter_get_scanline_noop; + iter->write_back = dest_write_back_direct; + } + else + { + if ((flags & (ITER_IGNORE_RGB | ITER_IGNORE_ALPHA)) == + (ITER_IGNORE_RGB | ITER_IGNORE_ALPHA)) + { + iter->get_scanline = _pixman_iter_get_scanline_noop; + } + else + { + iter->get_scanline = dest_get_scanline_narrow; + } + + iter->write_back = dest_write_back_narrow; + } + } + else + { + iter->get_scanline = dest_get_scanline_wide; + iter->write_back = dest_write_back_wide; + } +} + +static uint32_t * create_bits (pixman_format_code_t format, int width, int height, |