#include "pixman-private.h"
-/*
- * Computing composite region
- */
-#define BOUND(v) (int16_t) ((v) < INT16_MIN ? INT16_MIN : (v) > INT16_MAX ? INT16_MAX : (v))
-
-static inline pixman_bool_t
-miClipPictureReg (pixman_region32_t * pRegion,
- pixman_region32_t * pClip,
- int dx,
- int dy)
-{
- if (pixman_region32_n_rects(pRegion) == 1 &&
- pixman_region32_n_rects(pClip) == 1)
- {
- pixman_box32_t * pRbox = pixman_region32_rectangles(pRegion, NULL);
- pixman_box32_t * pCbox = pixman_region32_rectangles(pClip, NULL);
- int v;
-
- if (pRbox->x1 < (v = pCbox->x1 + dx))
- pRbox->x1 = BOUND(v);
- if (pRbox->x2 > (v = pCbox->x2 + dx))
- pRbox->x2 = BOUND(v);
- if (pRbox->y1 < (v = pCbox->y1 + dy))
- pRbox->y1 = BOUND(v);
- if (pRbox->y2 > (v = pCbox->y2 + dy))
- pRbox->y2 = BOUND(v);
- if (pRbox->x1 >= pRbox->x2 ||
- pRbox->y1 >= pRbox->y2)
- {
- pixman_region32_init (pRegion);
- }
- }
- else if (!pixman_region32_not_empty (pClip))
- {
- return FALSE;
- }
- else
- {
- if (dx || dy)
- pixman_region32_translate (pRegion, -dx, -dy);
- if (!pixman_region32_intersect (pRegion, pRegion, pClip))
- return FALSE;
- if (dx || dy)
- pixman_region32_translate(pRegion, dx, dy);
- }
- return pixman_region32_not_empty(pRegion);
-}
-
-
-static inline pixman_bool_t
-miClipPictureSrc (pixman_region32_t * pRegion,
- pixman_image_t * pPicture,
- int dx,
- int dy)
-{
- /* Source clips are ignored, unless they are explicitly turned on
- * and the clip in question was set by an X client
- */
- if (!pPicture->common.clip_sources || !pPicture->common.client_clip)
- return TRUE;
-
- return miClipPictureReg (pRegion,
- &pPicture->common.clip_region,
- dx, dy);
-}
-
-/*
- * returns FALSE if the final region is empty. Indistinguishable from
- * an allocation failure, but rendering ignores those anyways.
- */
-static pixman_bool_t
-pixman_compute_composite_region32 (pixman_region32_t * pRegion,
- pixman_image_t * pSrc,
- pixman_image_t * pMask,
- pixman_image_t * pDst,
- int16_t xSrc,
- int16_t ySrc,
- int16_t xMask,
- int16_t yMask,
- int16_t xDst,
- int16_t yDst,
- uint16_t width,
- uint16_t height)
-{
- int v;
-
- pRegion->extents.x1 = xDst;
- v = xDst + width;
- pRegion->extents.x2 = BOUND(v);
- pRegion->extents.y1 = yDst;
- v = yDst + height;
- pRegion->extents.y2 = BOUND(v);
-
- pRegion->extents.x1 = MAX (pRegion->extents.x1, 0);
- pRegion->extents.y1 = MAX (pRegion->extents.y1, 0);
-
- /* Some X servers rely on an old bug, where pixman would just believe the
- * set clip_region and not clip against the destination geometry. So,
- * since only X servers set "source clip", we only clip against destination
- * geometry when that is set.
- */
- if (!pDst->common.clip_sources)
- {
- pRegion->extents.x2 = MIN (pRegion->extents.x2, pDst->bits.width);
- pRegion->extents.y2 = MIN (pRegion->extents.y2, pDst->bits.height);
- }
-
- pRegion->data = 0;
-
- /* Check for empty operation */
- if (pRegion->extents.x1 >= pRegion->extents.x2 ||
- pRegion->extents.y1 >= pRegion->extents.y2)
- {
- pixman_region32_init (pRegion);
- return FALSE;
- }
-
- if (pDst->common.have_clip_region)
- {
- if (!miClipPictureReg (pRegion, &pDst->common.clip_region, 0, 0))
- {
- pixman_region32_fini (pRegion);
- return FALSE;
- }
- }
-
- if (pDst->common.alpha_map && pDst->common.alpha_map->common.have_clip_region)
- {
- if (!miClipPictureReg (pRegion, &pDst->common.alpha_map->common.clip_region,
- -pDst->common.alpha_origin_x,
- -pDst->common.alpha_origin_y))
- {
- pixman_region32_fini (pRegion);
- return FALSE;
- }
- }
-
- /* clip against src */
- if (pSrc->common.have_clip_region)
- {
- if (!miClipPictureSrc (pRegion, pSrc, xDst - xSrc, yDst - ySrc))
- {
- pixman_region32_fini (pRegion);
- return FALSE;
- }
- }
- if (pSrc->common.alpha_map && pSrc->common.alpha_map->common.have_clip_region)
- {
- if (!miClipPictureSrc (pRegion, (pixman_image_t *)pSrc->common.alpha_map,
- xDst - (xSrc - pSrc->common.alpha_origin_x),
- yDst - (ySrc - pSrc->common.alpha_origin_y)))
- {
- pixman_region32_fini (pRegion);
- return FALSE;
- }
- }
- /* clip against mask */
- if (pMask && pMask->common.have_clip_region)
- {
- if (!miClipPictureSrc (pRegion, pMask, xDst - xMask, yDst - yMask))
- {
- pixman_region32_fini (pRegion);
- return FALSE;
- }
- if (pMask->common.alpha_map && pMask->common.alpha_map->common.have_clip_region)
- {
- if (!miClipPictureSrc (pRegion, (pixman_image_t *)pMask->common.alpha_map,
- xDst - (xMask - pMask->common.alpha_origin_x),
- yDst - (yMask - pMask->common.alpha_origin_y)))
- {
- pixman_region32_fini (pRegion);
- return FALSE;
- }
- }
- }
-
- return TRUE;
-}
-
-PIXMAN_EXPORT pixman_bool_t
-pixman_compute_composite_region (pixman_region16_t * pRegion,
- pixman_image_t * pSrc,
- pixman_image_t * pMask,
- pixman_image_t * pDst,
- int16_t xSrc,
- int16_t ySrc,
- int16_t xMask,
- int16_t yMask,
- int16_t xDst,
- int16_t yDst,
- uint16_t width,
- uint16_t height)
+pixman_bool_t
+_pixman_multiply_overflows_size (size_t a, size_t b)
{
- pixman_region32_t r32;
- pixman_bool_t retval;
-
- pixman_region32_init (&r32);
-
- retval = pixman_compute_composite_region32 (&r32, pSrc, pMask, pDst,
- xSrc, ySrc, xMask, yMask, xDst, yDst,
- width, height);
-
- if (retval)
- {
- if (!pixman_region16_copy_from_region32 (pRegion, &r32))
- retval = FALSE;
- }
-
- pixman_region32_fini (&r32);
- return retval;
+ return a >= SIZE_MAX / b;
}
pixman_bool_t
-pixman_multiply_overflows_int (unsigned int a,
- unsigned int b)
+_pixman_multiply_overflows_int (unsigned int a, unsigned int b)
{
return a >= INT32_MAX / b;
}
pixman_bool_t
-pixman_addition_overflows_int (unsigned int a,
- unsigned int b)
+_pixman_addition_overflows_int (unsigned int a, unsigned int b)
{
return a > INT32_MAX - b;
}
void *
-pixman_malloc_ab(unsigned int a,
- unsigned int b)
+pixman_malloc_ab (unsigned int a,
+ unsigned int b)
{
if (a >= INT32_MAX / b)
return NULL;
void *
pixman_malloc_abc (unsigned int a,
- unsigned int b,
- unsigned int c)
+ unsigned int b,
+ unsigned int c)
{
if (a >= INT32_MAX / b)
return NULL;
}
/*
- * Helper routine to expand a color component from 0 < n <= 8 bits to 16 bits by
- * replication.
- */
-static inline uint64_t
-expand16(const uint8_t val, int nbits)
-{
- // Start out with the high bit of val in the high bit of result.
- uint16_t result = (uint16_t)val << (16 - nbits);
-
- if (nbits == 0)
- return 0;
-
- // Copy the bits in result, doubling the number of bits each time, until we
- // fill all 16 bits.
- while (nbits < 16) {
- result |= result >> nbits;
- nbits *= 2;
- }
-
- return result;
-}
-
-/*
* This function expands images from ARGB8 format to ARGB16. To preserve
* precision, it needs to know the original source format. For example, if the
* source was PIXMAN_x1r5g5b5 and the red component contained bits 12345, then
* should be 1234512345123451 and not 1234512312345123.
*/
void
-pixman_expand(uint64_t *dst, const uint32_t *src,
- pixman_format_code_t format, int width)
+pixman_expand (uint64_t * dst,
+ const uint32_t * src,
+ pixman_format_code_t format,
+ int width)
{
/*
- * Determine the sizes of each component and the masks and shifts required
- * to extract them from the source pixel.
+ * Determine the sizes of each component and the masks and shifts
+ * required to extract them from the source pixel.
*/
- const int a_size = PIXMAN_FORMAT_A(format),
- r_size = PIXMAN_FORMAT_R(format),
- g_size = PIXMAN_FORMAT_G(format),
- b_size = PIXMAN_FORMAT_B(format);
+ const int a_size = PIXMAN_FORMAT_A (format),
+ r_size = PIXMAN_FORMAT_R (format),
+ g_size = PIXMAN_FORMAT_G (format),
+ b_size = PIXMAN_FORMAT_B (format);
const int a_shift = 32 - a_size,
r_shift = 24 - r_size,
g_shift = 16 - g_size,
b_mask = ~(~0 << b_size);
int i;
- /* Start at the end so that we can do the expansion in place when src == dst */
+ /* Start at the end so that we can do the expansion in place
+ * when src == dst
+ */
for (i = width - 1; i >= 0; i--)
{
- const uint32_t pixel = src[i];
- // Extract the components.
- const uint8_t a = (pixel >> a_shift) & a_mask,
- r = (pixel >> r_shift) & r_mask,
- g = (pixel >> g_shift) & g_mask,
- b = (pixel >> b_shift) & b_mask;
- const uint64_t a16 = a_size ? expand16(a, a_size) : 0xffff,
- r16 = expand16(r, r_size),
- g16 = expand16(g, g_size),
- b16 = expand16(b, b_size);
-
- dst[i] = a16 << 48 | r16 << 32 | g16 << 16 | b16;
+ const uint32_t pixel = src[i];
+ const uint8_t a = (pixel >> a_shift) & a_mask,
+ r = (pixel >> r_shift) & r_mask,
+ g = (pixel >> g_shift) & g_mask,
+ b = (pixel >> b_shift) & b_mask;
+ const uint64_t
+ a16 = a_size ? unorm_to_unorm (a, a_size, 16) : 0xffff,
+ r16 = unorm_to_unorm (r, r_size, 16),
+ g16 = unorm_to_unorm (g, g_size, 16),
+ b16 = unorm_to_unorm (b, b_size, 16);
+
+ dst[i] = a16 << 48 | r16 << 32 | g16 << 16 | b16;
}
}
* components.
*/
void
-pixman_contract(uint32_t *dst, const uint64_t *src, int width)
+pixman_contract (uint32_t * dst,
+ const uint64_t *src,
+ int width)
{
int i;
- /* Start at the beginning so that we can do the contraction in place when
- * src == dst */
+ /* Start at the beginning so that we can do the contraction in
+ * place when src == dst
+ */
for (i = 0; i < width; i++)
{
- const uint8_t a = src[i] >> 56,
- r = src[i] >> 40,
- g = src[i] >> 24,
- b = src[i] >> 8;
- dst[i] = a << 24 | r << 16 | g << 8 | b;
- }
-}
-
-static void
-walk_region_internal (pixman_implementation_t *imp,
- pixman_op_t op,
- pixman_image_t * pSrc,
- pixman_image_t * pMask,
- pixman_image_t * pDst,
- int16_t xSrc,
- int16_t ySrc,
- int16_t xMask,
- int16_t yMask,
- int16_t xDst,
- int16_t yDst,
- uint16_t width,
- uint16_t height,
- pixman_bool_t srcRepeat,
- pixman_bool_t maskRepeat,
- pixman_region32_t *region,
- pixman_composite_func_t compositeRect)
-{
- int n;
- const pixman_box32_t *pbox;
- int w, h, w_this, h_this;
- int x_msk, y_msk, x_src, y_src, x_dst, y_dst;
+ const uint8_t a = src[i] >> 56,
+ r = src[i] >> 40,
+ g = src[i] >> 24,
+ b = src[i] >> 8;
- pbox = pixman_region32_rectangles (region, &n);
- while (n--)
- {
- h = pbox->y2 - pbox->y1;
- y_src = pbox->y1 - yDst + ySrc;
- y_msk = pbox->y1 - yDst + yMask;
- y_dst = pbox->y1;
- while (h)
- {
- h_this = h;
- w = pbox->x2 - pbox->x1;
- x_src = pbox->x1 - xDst + xSrc;
- x_msk = pbox->x1 - xDst + xMask;
- x_dst = pbox->x1;
-
- if (maskRepeat)
- {
- y_msk = MOD (y_msk, pMask->bits.height);
- if (h_this > pMask->bits.height - y_msk)
- h_this = pMask->bits.height - y_msk;
- }
- if (srcRepeat)
- {
- y_src = MOD (y_src, pSrc->bits.height);
- if (h_this > pSrc->bits.height - y_src)
- h_this = pSrc->bits.height - y_src;
- }
- while (w)
- {
- w_this = w;
- if (maskRepeat)
- {
- x_msk = MOD (x_msk, pMask->bits.width);
- if (w_this > pMask->bits.width - x_msk)
- w_this = pMask->bits.width - x_msk;
- }
- if (srcRepeat)
- {
- x_src = MOD (x_src, pSrc->bits.width);
- if (w_this > pSrc->bits.width - x_src)
- w_this = pSrc->bits.width - x_src;
- }
- (*compositeRect) (imp,
- op, pSrc, pMask, pDst,
- x_src, y_src, x_msk, y_msk, x_dst, y_dst,
- w_this, h_this);
- w -= w_this;
- x_src += w_this;
- x_msk += w_this;
- x_dst += w_this;
- }
- h -= h_this;
- y_src += h_this;
- y_msk += h_this;
- y_dst += h_this;
- }
- pbox++;
+ dst[i] = a << 24 | r << 16 | g << 8 | b;
}
}
-void
-_pixman_walk_composite_region (pixman_implementation_t *imp,
- pixman_op_t op,
- pixman_image_t * pSrc,
- pixman_image_t * pMask,
- pixman_image_t * pDst,
- int16_t xSrc,
- int16_t ySrc,
- int16_t xMask,
- int16_t yMask,
- int16_t xDst,
- int16_t yDst,
- uint16_t width,
- uint16_t height,
- pixman_composite_func_t compositeRect)
+uint32_t *
+_pixman_iter_get_scanline_noop (pixman_iter_t *iter, const uint32_t *mask)
{
- pixman_region32_t region;
-
- pixman_region32_init (®ion);
-
- if (pixman_compute_composite_region32 (
- ®ion, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask, xDst, yDst, width, height))
- {
- walk_region_internal (imp, op,
- pSrc, pMask, pDst,
- xSrc, ySrc, xMask, yMask, xDst, yDst,
- width, height, FALSE, FALSE,
- ®ion,
- compositeRect);
- }
-
- pixman_region32_fini (®ion);
-}
-
-
-static pixman_bool_t
-mask_is_solid (pixman_image_t *mask)
-{
- if (mask->type == SOLID)
- return TRUE;
-
- if (mask->type == BITS &&
- mask->common.repeat == PIXMAN_REPEAT_NORMAL &&
- mask->bits.width == 1 &&
- mask->bits.height == 1)
- {
- return TRUE;
- }
-
- return FALSE;
-}
-
-static const pixman_fast_path_t *
-get_fast_path (const pixman_fast_path_t *fast_paths,
- pixman_op_t op,
- pixman_image_t *pSrc,
- pixman_image_t *pMask,
- pixman_image_t *pDst,
- pixman_bool_t is_pixbuf)
-{
- const pixman_fast_path_t *info;
-
- for (info = fast_paths; info->op != PIXMAN_OP_NONE; info++)
- {
- pixman_bool_t valid_src = FALSE;
- pixman_bool_t valid_mask = FALSE;
-
- if (info->op != op)
- continue;
-
- if ((info->src_format == PIXMAN_solid && _pixman_image_is_solid (pSrc)) ||
- (pSrc->type == BITS && info->src_format == pSrc->bits.format))
- {
- valid_src = TRUE;
- }
-
- if (!valid_src)
- continue;
-
- if ((info->mask_format == PIXMAN_null && !pMask) ||
- (pMask && pMask->type == BITS && info->mask_format == pMask->bits.format))
- {
- valid_mask = TRUE;
-
- if (info->flags & NEED_SOLID_MASK)
- {
- if (!pMask || !mask_is_solid (pMask))
- valid_mask = FALSE;
- }
-
- if (info->flags & NEED_COMPONENT_ALPHA)
- {
- if (!pMask || !pMask->common.component_alpha)
- valid_mask = FALSE;
- }
- }
-
- if (!valid_mask)
- continue;
-
- if (info->dest_format != pDst->bits.format)
- continue;
-
- if ((info->flags & NEED_PIXBUF) && !is_pixbuf)
- continue;
-
- return info;
- }
-
- return NULL;
-}
-
-static inline pixman_bool_t
-image_covers (pixman_image_t *image, pixman_box32_t *extents)
-{
- if (image->common.type == BITS && image->common.repeat == PIXMAN_REPEAT_NONE)
- {
- if (extents->x1 < 0 || extents->y1 < 0 ||
- extents->x2 >= image->bits.width ||
- extents->y2 >= image->bits.height)
- {
- return FALSE;
- }
- }
-
- return TRUE;
-}
-
-pixman_bool_t
-_pixman_run_fast_path (const pixman_fast_path_t *paths,
- pixman_implementation_t *imp,
- pixman_op_t op,
- pixman_image_t *src,
- pixman_image_t *mask,
- pixman_image_t *dest,
- int32_t src_x,
- int32_t src_y,
- int32_t mask_x,
- int32_t mask_y,
- int32_t dest_x,
- int32_t dest_y,
- int32_t width,
- int32_t height)
-{
- pixman_composite_func_t func = NULL;
- pixman_bool_t src_repeat = src->common.repeat == PIXMAN_REPEAT_NORMAL;
- pixman_bool_t mask_repeat = mask && mask->common.repeat == PIXMAN_REPEAT_NORMAL;
- pixman_bool_t result;
-
- if ((src->type == BITS || _pixman_image_is_solid (src)) &&
- (!mask || mask->type == BITS)
- && !src->common.transform && !(mask && mask->common.transform)
- && !(mask && mask->common.alpha_map) && !src->common.alpha_map && !dest->common.alpha_map
- && (src->common.filter != PIXMAN_FILTER_CONVOLUTION)
- && (src->common.repeat != PIXMAN_REPEAT_PAD)
- && (src->common.repeat != PIXMAN_REPEAT_REFLECT)
- && (!mask || (mask->common.filter != PIXMAN_FILTER_CONVOLUTION &&
- mask->common.repeat != PIXMAN_REPEAT_PAD &&
- mask->common.repeat != PIXMAN_REPEAT_REFLECT))
- && !src->common.read_func && !src->common.write_func
- && !(mask && mask->common.read_func)
- && !(mask && mask->common.write_func)
- && !dest->common.read_func
- && !dest->common.write_func)
- {
- const pixman_fast_path_t *info;
- pixman_bool_t pixbuf;
-
- pixbuf =
- src && src->type == BITS &&
- mask && mask->type == BITS &&
- src->bits.bits == mask->bits.bits &&
- src_x == mask_x &&
- src_y == mask_y &&
- !mask->common.component_alpha &&
- !mask_repeat;
-
- info = get_fast_path (paths, op, src, mask, dest, pixbuf);
-
- if (info)
- {
- func = info->func;
-
- if (info->src_format == PIXMAN_solid)
- src_repeat = FALSE;
-
- if (info->mask_format == PIXMAN_solid || info->flags & NEED_SOLID_MASK)
- mask_repeat = FALSE;
-
- if ((src_repeat &&
- src->bits.width == 1 &&
- src->bits.height == 1) ||
- (mask_repeat &&
- mask->bits.width == 1 &&
- mask->bits.height == 1))
- {
- /* If src or mask are repeating 1x1 images and src_repeat or
- * mask_repeat are still TRUE, it means the fast path we
- * selected does not actually handle repeating images.
- *
- * So rather than call the "fast path" with a zillion
- * 1x1 requests, we just fall back to the general code (which
- * does do something sensible with 1x1 repeating images).
- */
- func = NULL;
- }
- }
- }
-
- result = FALSE;
-
- if (func)
- {
- pixman_region32_t region;
- pixman_region32_init (®ion);
-
- if (pixman_compute_composite_region32 (
- ®ion, src, mask, dest, src_x, src_y, mask_x, mask_y, dest_x, dest_y, width, height))
- {
- pixman_box32_t *extents = pixman_region32_extents (®ion);
-
- if (image_covers (src, extents) &&
- (!mask || image_covers (mask, extents)))
- {
- walk_region_internal (imp, op,
- src, mask, dest,
- src_x, src_y, mask_x, mask_y,
- dest_x, dest_y,
- width, height,
- src_repeat, mask_repeat,
- ®ion,
- func);
-
- result = TRUE;
- }
- }
-
- pixman_region32_fini (®ion);
- }
-
- return result;
+ return iter->buffer;
}
#define N_TMP_BOXES (16)
pixman_bool_t
pixman_region16_copy_from_region32 (pixman_region16_t *dst,
- pixman_region32_t *src)
+ pixman_region32_t *src)
{
int n_boxes, i;
pixman_box32_t *boxes32;
pixman_box16_t *boxes16;
pixman_bool_t retval;
-
+
boxes32 = pixman_region32_rectangles (src, &n_boxes);
boxes16 = pixman_malloc_ab (n_boxes, sizeof (pixman_box16_t));
if (!boxes16)
return FALSE;
-
+
for (i = 0; i < n_boxes; ++i)
{
boxes16[i].x1 = boxes32[i].x1;
pixman_bool_t
pixman_region32_copy_from_region16 (pixman_region32_t *dst,
- pixman_region16_t *src)
+ pixman_region16_t *src)
{
int n_boxes, i;
pixman_box16_t *boxes16;
pixman_box32_t *boxes32;
pixman_box32_t tmp_boxes[N_TMP_BOXES];
pixman_bool_t retval;
-
+
boxes16 = pixman_region_rectangles (src, &n_boxes);
if (n_boxes > N_TMP_BOXES)
boxes32 = pixman_malloc_ab (n_boxes, sizeof (pixman_box32_t));
else
boxes32 = tmp_boxes;
-
+
if (!boxes32)
return FALSE;
-
+
for (i = 0; i < n_boxes; ++i)
{
boxes32[i].x1 = boxes16[i].x1;
return retval;
}
+#ifdef DEBUG
+
+void
+_pixman_log_error (const char *function, const char *message)
+{
+ static int n_messages = 0;
+
+ if (n_messages < 10)
+ {
+ fprintf (stderr,
+ "*** BUG ***\n"
+ "In %s: %s\n"
+ "Set a breakpoint on '_pixman_log_error' to debug\n\n",
+ function, message);
+
+ n_messages++;
+ }
+}
+
+#endif
projects / profile / ivi / pixman.git / blobdiff