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-rw-r--r--gfx/cairo/libpixman/src/pixman-bits-image.c1849
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diff --git a/gfx/cairo/libpixman/src/pixman-bits-image.c b/gfx/cairo/libpixman/src/pixman-bits-image.c
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index 000000000..e9d2fb69c
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+++ b/gfx/cairo/libpixman/src/pixman-bits-image.c
@@ -0,0 +1,1849 @@
+/*
+ * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
+ * 2005 Lars Knoll & Zack Rusin, Trolltech
+ * 2008 Aaron Plattner, NVIDIA Corporation
+ * Copyright © 2000 SuSE, Inc.
+ * Copyright © 2007, 2009 Red Hat, Inc.
+ * Copyright © 2008 André Tupinambá <andrelrt@gmail.com>
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Keith Packard makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "pixman-private.h"
+#include "pixman-combine32.h"
+#include "pixman-inlines.h"
+
+static uint32_t *
+_pixman_image_get_scanline_generic_float (pixman_iter_t * iter,
+ const uint32_t *mask)
+{
+ pixman_iter_get_scanline_t fetch_32 = iter->data;
+ uint32_t *buffer = iter->buffer;
+
+ fetch_32 (iter, NULL);
+
+ pixman_expand_to_float ((argb_t *)buffer, buffer, PIXMAN_a8r8g8b8, iter->width);
+
+ return iter->buffer;
+}
+
+/* Fetch functions */
+
+static force_inline uint32_t
+fetch_pixel_no_alpha (bits_image_t *image,
+ int x, int y, pixman_bool_t check_bounds)
+{
+ if (check_bounds &&
+ (x < 0 || x >= image->width || y < 0 || y >= image->height))
+ {
+ return 0;
+ }
+
+ return image->fetch_pixel_32 (image, x, y);
+}
+
+typedef uint32_t (* get_pixel_t) (bits_image_t *image,
+ int x, int y, pixman_bool_t check_bounds);
+
+static force_inline uint32_t
+bits_image_fetch_pixel_nearest (bits_image_t *image,
+ pixman_fixed_t x,
+ pixman_fixed_t y,
+ get_pixel_t get_pixel)
+{
+ int x0 = pixman_fixed_to_int (x - pixman_fixed_e);
+ int y0 = pixman_fixed_to_int (y - pixman_fixed_e);
+
+ if (image->common.repeat != PIXMAN_REPEAT_NONE)
+ {
+ repeat (image->common.repeat, &x0, image->width);
+ repeat (image->common.repeat, &y0, image->height);
+
+ return get_pixel (image, x0, y0, FALSE);
+ }
+ else
+ {
+ return get_pixel (image, x0, y0, TRUE);
+ }
+}
+
+static force_inline uint32_t
+bits_image_fetch_pixel_bilinear (bits_image_t *image,
+ pixman_fixed_t x,
+ pixman_fixed_t y,
+ get_pixel_t get_pixel)
+{
+ pixman_repeat_t repeat_mode = image->common.repeat;
+ int width = image->width;
+ int height = image->height;
+ int x1, y1, x2, y2;
+ uint32_t tl, tr, bl, br;
+ int32_t distx, disty;
+
+ x1 = x - pixman_fixed_1 / 2;
+ y1 = y - pixman_fixed_1 / 2;
+
+ distx = pixman_fixed_to_bilinear_weight (x1);
+ disty = pixman_fixed_to_bilinear_weight (y1);
+
+ x1 = pixman_fixed_to_int (x1);
+ y1 = pixman_fixed_to_int (y1);
+ x2 = x1 + 1;
+ y2 = y1 + 1;
+
+ if (repeat_mode != PIXMAN_REPEAT_NONE)
+ {
+ repeat (repeat_mode, &x1, width);
+ repeat (repeat_mode, &y1, height);
+ repeat (repeat_mode, &x2, width);
+ repeat (repeat_mode, &y2, height);
+
+ tl = get_pixel (image, x1, y1, FALSE);
+ bl = get_pixel (image, x1, y2, FALSE);
+ tr = get_pixel (image, x2, y1, FALSE);
+ br = get_pixel (image, x2, y2, FALSE);
+ }
+ else
+ {
+ tl = get_pixel (image, x1, y1, TRUE);
+ tr = get_pixel (image, x2, y1, TRUE);
+ bl = get_pixel (image, x1, y2, TRUE);
+ br = get_pixel (image, x2, y2, TRUE);
+ }
+
+ return bilinear_interpolation (tl, tr, bl, br, distx, disty);
+}
+
+static uint32_t *
+bits_image_fetch_bilinear_no_repeat_8888 (pixman_iter_t *iter,
+ const uint32_t *mask)
+{
+
+ pixman_image_t * ima = iter->image;
+ int offset = iter->x;
+ int line = iter->y++;
+ int width = iter->width;
+ uint32_t * buffer = iter->buffer;
+
+ bits_image_t *bits = &ima->bits;
+ pixman_fixed_t x_top, x_bottom, x;
+ pixman_fixed_t ux_top, ux_bottom, ux;
+ pixman_vector_t v;
+ uint32_t top_mask, bottom_mask;
+ uint32_t *top_row;
+ 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;
+ int w;
+
+ /* reference point is the center of the pixel */
+ v.vector[0] = pixman_int_to_fixed (offset) + pixman_fixed_1 / 2;
+ v.vector[1] = pixman_int_to_fixed (line) + pixman_fixed_1 / 2;
+ v.vector[2] = pixman_fixed_1;
+
+ if (!pixman_transform_point_3d (bits->common.transform, &v))
+ return iter->buffer;
+
+ ux = ux_top = ux_bottom = bits->common.transform->matrix[0][0];
+ x = x_top = x_bottom = v.vector[0] - pixman_fixed_1/2;
+
+ y = v.vector[1] - pixman_fixed_1/2;
+ disty = pixman_fixed_to_bilinear_weight (y);
+
+ /* Load the pointers to the first and second lines from the source
+ * image that bilinear code must read.
+ *
+ * The main trick in this code is about the check if any line are
+ * outside of the image;
+ *
+ * When I realize that a line (any one) is outside, I change
+ * the pointer to a dummy area with zeros. Once I change this, I
+ * must be sure the pointer will not change, so I set the
+ * variables to each pointer increments inside the loop.
+ */
+ y1 = pixman_fixed_to_int (y);
+ y2 = y1 + 1;
+
+ if (y1 < 0 || y1 >= bits->height)
+ {
+ top_row = zero;
+ x_top = 0;
+ ux_top = 0;
+ }
+ else
+ {
+ top_row = bits->bits + y1 * bits->rowstride;
+ x_top = x;
+ ux_top = ux;
+ }
+
+ if (y2 < 0 || y2 >= bits->height)
+ {
+ bottom_row = zero;
+ x_bottom = 0;
+ ux_bottom = 0;
+ }
+ else
+ {
+ bottom_row = bits->bits + y2 * bits->rowstride;
+ x_bottom = x;
+ ux_bottom = ux;
+ }
+
+ /* Instead of checking whether the operation uses the mast in
+ * each loop iteration, verify this only once and prepare the
+ * variables to make the code smaller inside the loop.
+ */
+ if (!mask)
+ {
+ mask_inc = 0;
+ mask = &one;
+ }
+ else
+ {
+ /* If have a mask, prepare the variables to check it */
+ mask_inc = 1;
+ }
+
+ /* If both are zero, then the whole thing is zero */
+ if (top_row == zero && bottom_row == zero)
+ {
+ memset (buffer, 0, width * sizeof (uint32_t));
+ return iter->buffer;
+ }
+ else if (bits->format == PIXMAN_x8r8g8b8)
+ {
+ if (top_row == zero)
+ {
+ top_mask = 0;
+ bottom_mask = 0xff000000;
+ }
+ else if (bottom_row == zero)
+ {
+ top_mask = 0xff000000;
+ bottom_mask = 0;
+ }
+ else
+ {
+ top_mask = 0xff000000;
+ bottom_mask = 0xff000000;
+ }
+ }
+ else
+ {
+ top_mask = 0;
+ bottom_mask = 0;
+ }
+
+ end = buffer + width;
+
+ /* Zero fill to the left of the image */
+ while (buffer < end && x < pixman_fixed_minus_1)
+ {
+ *buffer++ = 0;
+ x += ux;
+ x_top += ux_top;
+ x_bottom += ux_bottom;
+ mask += mask_inc;
+ }
+
+ /* Left edge
+ */
+ while (buffer < end && x < 0)
+ {
+ uint32_t tr, br;
+ int32_t distx;
+
+ tr = top_row[pixman_fixed_to_int (x_top) + 1] | top_mask;
+ br = bottom_row[pixman_fixed_to_int (x_bottom) + 1] | bottom_mask;
+
+ distx = pixman_fixed_to_bilinear_weight (x);
+
+ *buffer++ = bilinear_interpolation (0, tr, 0, br, distx, disty);
+
+ x += ux;
+ x_top += ux_top;
+ x_bottom += ux_bottom;
+ mask += mask_inc;
+ }
+
+ /* Main part */
+ w = pixman_int_to_fixed (bits->width - 1);
+
+ while (buffer < end && x < w)
+ {
+ if (*mask)
+ {
+ uint32_t tl, tr, bl, br;
+ int32_t distx;
+
+ tl = top_row [pixman_fixed_to_int (x_top)] | top_mask;
+ tr = top_row [pixman_fixed_to_int (x_top) + 1] | top_mask;
+ bl = bottom_row [pixman_fixed_to_int (x_bottom)] | bottom_mask;
+ br = bottom_row [pixman_fixed_to_int (x_bottom) + 1] | bottom_mask;
+
+ distx = pixman_fixed_to_bilinear_weight (x);
+
+ *buffer = bilinear_interpolation (tl, tr, bl, br, distx, disty);
+ }
+
+ buffer++;
+ x += ux;
+ x_top += ux_top;
+ x_bottom += ux_bottom;
+ mask += mask_inc;
+ }
+
+ /* Right Edge */
+ w = pixman_int_to_fixed (bits->width);
+ while (buffer < end && x < w)
+ {
+ if (*mask)
+ {
+ uint32_t tl, bl;
+ int32_t distx;
+
+ tl = top_row [pixman_fixed_to_int (x_top)] | top_mask;
+ bl = bottom_row [pixman_fixed_to_int (x_bottom)] | bottom_mask;
+
+ distx = pixman_fixed_to_bilinear_weight (x);
+
+ *buffer = bilinear_interpolation (tl, 0, bl, 0, distx, disty);
+ }
+
+ buffer++;
+ x += ux;
+ x_top += ux_top;
+ x_bottom += ux_bottom;
+ mask += mask_inc;
+ }
+
+ /* Zero fill to the left of the image */
+ while (buffer < end)
+ *buffer++ = 0;
+
+ return iter->buffer;
+}
+
+static force_inline uint32_t
+bits_image_fetch_pixel_convolution (bits_image_t *image,
+ pixman_fixed_t x,
+ pixman_fixed_t y,
+ get_pixel_t get_pixel)
+{
+ pixman_fixed_t *params = image->common.filter_params;
+ int x_off = (params[0] - pixman_fixed_1) >> 1;
+ int y_off = (params[1] - pixman_fixed_1) >> 1;
+ int32_t cwidth = pixman_fixed_to_int (params[0]);
+ int32_t cheight = pixman_fixed_to_int (params[1]);
+ int32_t i, j, x1, x2, y1, y2;
+ pixman_repeat_t repeat_mode = image->common.repeat;
+ int width = image->width;
+ int height = image->height;
+ int srtot, sgtot, sbtot, satot;
+
+ params += 2;
+
+ x1 = pixman_fixed_to_int (x - pixman_fixed_e - x_off);
+ y1 = pixman_fixed_to_int (y - pixman_fixed_e - y_off);
+ x2 = x1 + cwidth;
+ y2 = y1 + cheight;
+
+ srtot = sgtot = sbtot = satot = 0;
+
+ for (i = y1; i < y2; ++i)
+ {
+ for (j = x1; j < x2; ++j)
+ {
+ int rx = j;
+ int ry = i;
+
+ pixman_fixed_t f = *params;
+
+ if (f)
+ {
+ uint32_t pixel;
+
+ if (repeat_mode != PIXMAN_REPEAT_NONE)
+ {
+ repeat (repeat_mode, &rx, width);
+ repeat (repeat_mode, &ry, height);
+
+ pixel = get_pixel (image, rx, ry, FALSE);
+ }
+ else
+ {
+ pixel = get_pixel (image, rx, ry, TRUE);
+ }
+
+ srtot += (int)RED_8 (pixel) * f;
+ sgtot += (int)GREEN_8 (pixel) * f;
+ sbtot += (int)BLUE_8 (pixel) * f;
+ satot += (int)ALPHA_8 (pixel) * f;
+ }
+
+ params++;
+ }
+ }
+
+ satot = (satot + 0x8000) >> 16;
+ srtot = (srtot + 0x8000) >> 16;
+ sgtot = (sgtot + 0x8000) >> 16;
+ sbtot = (sbtot + 0x8000) >> 16;
+
+ satot = CLIP (satot, 0, 0xff);
+ srtot = CLIP (srtot, 0, 0xff);
+ sgtot = CLIP (sgtot, 0, 0xff);
+ sbtot = CLIP (sbtot, 0, 0xff);
+
+ return ((satot << 24) | (srtot << 16) | (sgtot << 8) | (sbtot));
+}
+
+static uint32_t
+bits_image_fetch_pixel_separable_convolution (bits_image_t *image,
+ pixman_fixed_t x,
+ pixman_fixed_t y,
+ get_pixel_t get_pixel)
+{
+ pixman_fixed_t *params = image->common.filter_params;
+ pixman_repeat_t repeat_mode = image->common.repeat;
+ int width = image->width;
+ int height = image->height;
+ int cwidth = pixman_fixed_to_int (params[0]);
+ int cheight = pixman_fixed_to_int (params[1]);
+ int x_phase_bits = pixman_fixed_to_int (params[2]);
+ int y_phase_bits = pixman_fixed_to_int (params[3]);
+ int x_phase_shift = 16 - x_phase_bits;
+ int y_phase_shift = 16 - y_phase_bits;
+ int x_off = ((cwidth << 16) - pixman_fixed_1) >> 1;
+ int y_off = ((cheight << 16) - pixman_fixed_1) >> 1;
+ pixman_fixed_t *y_params;
+ int srtot, sgtot, sbtot, satot;
+ int32_t x1, x2, y1, y2;
+ int32_t px, py;
+ int i, j;
+
+ /* Round x and y to the middle of the closest phase before continuing. This
+ * ensures that the convolution matrix is aligned right, since it was
+ * positioned relative to a particular phase (and not relative to whatever
+ * exact fraction we happen to get here).
+ */
+ x = ((x >> x_phase_shift) << x_phase_shift) + ((1 << x_phase_shift) >> 1);
+ y = ((y >> y_phase_shift) << y_phase_shift) + ((1 << y_phase_shift) >> 1);
+
+ px = (x & 0xffff) >> x_phase_shift;
+ py = (y & 0xffff) >> y_phase_shift;
+
+ y_params = params + 4 + (1 << x_phase_bits) * cwidth + py * cheight;
+
+ x1 = pixman_fixed_to_int (x - pixman_fixed_e - x_off);
+ y1 = pixman_fixed_to_int (y - pixman_fixed_e - y_off);
+ x2 = x1 + cwidth;
+ y2 = y1 + cheight;
+
+ srtot = sgtot = sbtot = satot = 0;
+
+ for (i = y1; i < y2; ++i)
+ {
+ pixman_fixed_48_16_t fy = *y_params++;
+ pixman_fixed_t *x_params = params + 4 + px * cwidth;
+
+ if (fy)
+ {
+ for (j = x1; j < x2; ++j)
+ {
+ pixman_fixed_t fx = *x_params++;
+ int rx = j;
+ int ry = i;
+
+ if (fx)
+ {
+ pixman_fixed_t f;
+ uint32_t pixel;
+
+ if (repeat_mode != PIXMAN_REPEAT_NONE)
+ {
+ repeat (repeat_mode, &rx, width);
+ repeat (repeat_mode, &ry, height);
+
+ pixel = get_pixel (image, rx, ry, FALSE);
+ }
+ else
+ {
+ pixel = get_pixel (image, rx, ry, TRUE);
+ }
+
+ f = (fy * fx + 0x8000) >> 16;
+
+ srtot += (int)RED_8 (pixel) * f;
+ sgtot += (int)GREEN_8 (pixel) * f;
+ sbtot += (int)BLUE_8 (pixel) * f;
+ satot += (int)ALPHA_8 (pixel) * f;
+ }
+ }
+ }
+ }
+
+ satot = (satot + 0x8000) >> 16;
+ srtot = (srtot + 0x8000) >> 16;
+ sgtot = (sgtot + 0x8000) >> 16;
+ sbtot = (sbtot + 0x8000) >> 16;
+
+ satot = CLIP (satot, 0, 0xff);
+ srtot = CLIP (srtot, 0, 0xff);
+ sgtot = CLIP (sgtot, 0, 0xff);
+ sbtot = CLIP (sbtot, 0, 0xff);
+
+ return ((satot << 24) | (srtot << 16) | (sgtot << 8) | (sbtot));
+}
+
+static force_inline uint32_t
+bits_image_fetch_pixel_filtered (bits_image_t *image,
+ pixman_fixed_t x,
+ pixman_fixed_t y,
+ get_pixel_t get_pixel)
+{
+ switch (image->common.filter)
+ {
+ case PIXMAN_FILTER_NEAREST:
+ case PIXMAN_FILTER_FAST:
+ return bits_image_fetch_pixel_nearest (image, x, y, get_pixel);
+ break;
+
+ case PIXMAN_FILTER_BILINEAR:
+ case PIXMAN_FILTER_GOOD:
+ case PIXMAN_FILTER_BEST:
+ return bits_image_fetch_pixel_bilinear (image, x, y, get_pixel);
+ break;
+
+ case PIXMAN_FILTER_CONVOLUTION:
+ return bits_image_fetch_pixel_convolution (image, x, y, get_pixel);
+ break;
+
+ case PIXMAN_FILTER_SEPARABLE_CONVOLUTION:
+ return bits_image_fetch_pixel_separable_convolution (image, x, y, get_pixel);
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static uint32_t *
+bits_image_fetch_affine_no_alpha (pixman_iter_t * iter,
+ const uint32_t * mask)
+{
+ pixman_image_t *image = iter->image;
+ int offset = iter->x;
+ int line = iter->y++;
+ int width = iter->width;
+ uint32_t * buffer = iter->buffer;
+
+ pixman_fixed_t x, y;
+ pixman_fixed_t ux, uy;
+ pixman_vector_t v;
+ int i;
+
+ /* reference point is the center of the pixel */
+ v.vector[0] = pixman_int_to_fixed (offset) + pixman_fixed_1 / 2;
+ v.vector[1] = pixman_int_to_fixed (line) + pixman_fixed_1 / 2;
+ v.vector[2] = pixman_fixed_1;
+
+ if (image->common.transform)
+ {
+ if (!pixman_transform_point_3d (image->common.transform, &v))
+ return iter->buffer;
+
+ ux = image->common.transform->matrix[0][0];
+ uy = image->common.transform->matrix[1][0];
+ }
+ else
+ {
+ ux = pixman_fixed_1;
+ uy = 0;
+ }
+
+ x = v.vector[0];
+ y = v.vector[1];
+
+ for (i = 0; i < width; ++i)
+ {
+ if (!mask || mask[i])
+ {
+ buffer[i] = bits_image_fetch_pixel_filtered (
+ &image->bits, x, y, fetch_pixel_no_alpha);
+ }
+
+ x += ux;
+ y += uy;
+ }
+
+ return buffer;
+}
+
+/* General fetcher */
+static force_inline uint32_t
+fetch_pixel_general (bits_image_t *image, int x, int y, pixman_bool_t check_bounds)
+{
+ uint32_t pixel;
+
+ if (check_bounds &&
+ (x < 0 || x >= image->width || y < 0 || y >= image->height))
+ {
+ return 0;
+ }
+
+ pixel = image->fetch_pixel_32 (image, x, y);
+
+ if (image->common.alpha_map)
+ {
+ uint32_t pixel_a;
+
+ x -= image->common.alpha_origin_x;
+ y -= image->common.alpha_origin_y;
+
+ if (x < 0 || x >= image->common.alpha_map->width ||
+ y < 0 || y >= image->common.alpha_map->height)
+ {
+ pixel_a = 0;
+ }
+ else
+ {
+ pixel_a = image->common.alpha_map->fetch_pixel_32 (
+ image->common.alpha_map, x, y);
+
+ pixel_a = ALPHA_8 (pixel_a);
+ }
+
+ pixel &= 0x00ffffff;
+ pixel |= (pixel_a << 24);
+ }
+
+ return pixel;
+}
+
+static uint32_t *
+bits_image_fetch_general (pixman_iter_t *iter,
+ const uint32_t *mask)
+{
+ pixman_image_t *image = iter->image;
+ int offset = iter->x;
+ int line = iter->y++;
+ int width = iter->width;
+ uint32_t * buffer = iter->buffer;
+
+ pixman_fixed_t x, y, w;
+ pixman_fixed_t ux, uy, uw;
+ pixman_vector_t v;
+ int i;
+
+ /* reference point is the center of the pixel */
+ v.vector[0] = pixman_int_to_fixed (offset) + pixman_fixed_1 / 2;
+ v.vector[1] = pixman_int_to_fixed (line) + pixman_fixed_1 / 2;
+ v.vector[2] = pixman_fixed_1;
+
+ if (image->common.transform)
+ {
+ if (!pixman_transform_point_3d (image->common.transform, &v))
+ return buffer;
+
+ ux = image->common.transform->matrix[0][0];
+ uy = image->common.transform->matrix[1][0];
+ uw = image->common.transform->matrix[2][0];
+ }
+ else
+ {
+ ux = pixman_fixed_1;
+ uy = 0;
+ uw = 0;
+ }
+
+ x = v.vector[0];
+ y = v.vector[1];
+ w = v.vector[2];
+
+ for (i = 0; i < width; ++i)
+ {
+ pixman_fixed_t x0, y0;
+
+ if (!mask || mask[i])
+ {
+ if (w != 0)
+ {
+ x0 = ((pixman_fixed_48_16_t)x << 16) / w;
+ y0 = ((pixman_fixed_48_16_t)y << 16) / w;
+ }
+ else
+ {
+ x0 = 0;
+ y0 = 0;
+ }
+
+ buffer[i] = bits_image_fetch_pixel_filtered (
+ &image->bits, x0, y0, fetch_pixel_general);
+ }
+
+ x += ux;
+ y += uy;
+ w += uw;
+ }
+
+ return buffer;
+}
+
+typedef uint32_t (* convert_pixel_t) (const uint8_t *row, int x);
+
+static force_inline void
+bits_image_fetch_separable_convolution_affine (pixman_image_t * image,
+ int offset,
+ int line,
+ int width,
+ uint32_t * buffer,
+ const uint32_t * mask,
+
+ convert_pixel_t convert_pixel,
+ pixman_format_code_t format,
+ pixman_repeat_t repeat_mode)
+{
+ bits_image_t *bits = &image->bits;
+ pixman_fixed_t *params = image->common.filter_params;
+ int cwidth = pixman_fixed_to_int (params[0]);
+ int cheight = pixman_fixed_to_int (params[1]);
+ int x_off = ((cwidth << 16) - pixman_fixed_1) >> 1;
+ int y_off = ((cheight << 16) - pixman_fixed_1) >> 1;
+ int x_phase_bits = pixman_fixed_to_int (params[2]);
+ int y_phase_bits = pixman_fixed_to_int (params[3]);
+ int x_phase_shift = 16 - x_phase_bits;
+ int y_phase_shift = 16 - y_phase_bits;
+ pixman_fixed_t vx, vy;
+ pixman_fixed_t ux, uy;
+ pixman_vector_t v;
+ int k;
+
+ /* reference point is the center of the pixel */
+ v.vector[0] = pixman_int_to_fixed (offset) + pixman_fixed_1 / 2;
+ v.vector[1] = pixman_int_to_fixed (line) + pixman_fixed_1 / 2;
+ v.vector[2] = pixman_fixed_1;
+
+ if (!pixman_transform_point_3d (image->common.transform, &v))
+ return;
+
+ ux = image->common.transform->matrix[0][0];
+ uy = image->common.transform->matrix[1][0];
+
+ vx = v.vector[0];
+ vy = v.vector[1];
+
+ for (k = 0; k < width; ++k)
+ {
+ pixman_fixed_t *y_params;
+ int satot, srtot, sgtot, sbtot;
+ pixman_fixed_t x, y;
+ int32_t x1, x2, y1, y2;
+ int32_t px, py;
+ int i, j;
+
+ if (mask && !mask[k])
+ goto next;
+
+ /* Round x and y to the middle of the closest phase before continuing. This
+ * ensures that the convolution matrix is aligned right, since it was
+ * positioned relative to a particular phase (and not relative to whatever
+ * exact fraction we happen to get here).
+ */
+ x = ((vx >> x_phase_shift) << x_phase_shift) + ((1 << x_phase_shift) >> 1);
+ y = ((vy >> y_phase_shift) << y_phase_shift) + ((1 << y_phase_shift) >> 1);
+
+ px = (x & 0xffff) >> x_phase_shift;
+ py = (y & 0xffff) >> y_phase_shift;
+
+ x1 = pixman_fixed_to_int (x - pixman_fixed_e - x_off);
+ y1 = pixman_fixed_to_int (y - pixman_fixed_e - y_off);
+ x2 = x1 + cwidth;
+ y2 = y1 + cheight;
+
+ satot = srtot = sgtot = sbtot = 0;
+
+ y_params = params + 4 + (1 << x_phase_bits) * cwidth + py * cheight;
+
+ for (i = y1; i < y2; ++i)
+ {
+ pixman_fixed_t fy = *y_params++;
+
+ if (fy)
+ {
+ pixman_fixed_t *x_params = params + 4 + px * cwidth;
+
+ for (j = x1; j < x2; ++j)
+ {
+ pixman_fixed_t fx = *x_params++;
+ int rx = j;
+ int ry = i;
+
+ if (fx)
+ {
+ pixman_fixed_t f;
+ uint32_t pixel, mask;
+ uint8_t *row;
+
+ mask = PIXMAN_FORMAT_A (format)? 0 : 0xff000000;
+
+ if (repeat_mode != PIXMAN_REPEAT_NONE)
+ {
+ repeat (repeat_mode, &rx, bits->width);
+ repeat (repeat_mode, &ry, bits->height);
+
+ row = (uint8_t *)bits->bits + bits->rowstride * 4 * ry;
+ pixel = convert_pixel (row, rx) | mask;
+ }
+ else
+ {
+ if (rx < 0 || ry < 0 || rx >= bits->width || ry >= bits->height)
+ {
+ pixel = 0;
+ }
+ else
+ {
+ row = (uint8_t *)bits->bits + bits->rowstride * 4 * ry;
+ pixel = convert_pixel (row, rx) | mask;
+ }
+ }
+
+ f = ((pixman_fixed_32_32_t)fx * fy + 0x8000) >> 16;
+ srtot += (int)RED_8 (pixel) * f;
+ sgtot += (int)GREEN_8 (pixel) * f;
+ sbtot += (int)BLUE_8 (pixel) * f;
+ satot += (int)ALPHA_8 (pixel) * f;
+ }
+ }
+ }
+ }
+
+ satot = (satot + 0x8000) >> 16;
+ srtot = (srtot + 0x8000) >> 16;
+ sgtot = (sgtot + 0x8000) >> 16;
+ sbtot = (sbtot + 0x8000) >> 16;
+
+ satot = CLIP (satot, 0, 0xff);
+ srtot = CLIP (srtot, 0, 0xff);
+ sgtot = CLIP (sgtot, 0, 0xff);
+ sbtot = CLIP (sbtot, 0, 0xff);
+
+ buffer[k] = (satot << 24) | (srtot << 16) | (sgtot << 8) | (sbtot << 0);
+
+ next:
+ vx += ux;
+ vy += uy;
+ }
+}
+
+static const uint8_t zero[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+
+static force_inline void
+bits_image_fetch_bilinear_affine (pixman_image_t * image,
+ int offset,
+ int line,
+ int width,
+ uint32_t * buffer,
+ const uint32_t * mask,
+
+ convert_pixel_t convert_pixel,
+ pixman_format_code_t format,
+ pixman_repeat_t repeat_mode)
+{
+ pixman_fixed_t x, y;
+ pixman_fixed_t ux, uy;
+ pixman_vector_t v;
+ bits_image_t *bits = &image->bits;
+ int i;
+
+ /* reference point is the center of the pixel */
+ v.vector[0] = pixman_int_to_fixed (offset) + pixman_fixed_1 / 2;
+ v.vector[1] = pixman_int_to_fixed (line) + pixman_fixed_1 / 2;
+ v.vector[2] = pixman_fixed_1;
+
+ if (!pixman_transform_point_3d (image->common.transform, &v))
+ return;
+
+ ux = image->common.transform->matrix[0][0];
+ uy = image->common.transform->matrix[1][0];
+
+ x = v.vector[0];
+ y = v.vector[1];
+
+ for (i = 0; i < width; ++i)
+ {
+ int x1, y1, x2, y2;
+ uint32_t tl, tr, bl, br;
+ int32_t distx, disty;
+ int width = image->bits.width;
+ int height = image->bits.height;
+ const uint8_t *row1;
+ const uint8_t *row2;
+
+ if (mask && !mask[i])
+ goto next;
+
+ x1 = x - pixman_fixed_1 / 2;
+ y1 = y - pixman_fixed_1 / 2;
+
+ distx = pixman_fixed_to_bilinear_weight (x1);
+ disty = pixman_fixed_to_bilinear_weight (y1);
+
+ y1 = pixman_fixed_to_int (y1);
+ y2 = y1 + 1;
+ x1 = pixman_fixed_to_int (x1);
+ x2 = x1 + 1;
+
+ if (repeat_mode != PIXMAN_REPEAT_NONE)
+ {
+ uint32_t mask;
+
+ mask = PIXMAN_FORMAT_A (format)? 0 : 0xff000000;
+
+ repeat (repeat_mode, &x1, width);
+ repeat (repeat_mode, &y1, height);
+ repeat (repeat_mode, &x2, width);
+ repeat (repeat_mode, &y2, height);
+
+ row1 = (uint8_t *)bits->bits + bits->rowstride * 4 * y1;
+ row2 = (uint8_t *)bits->bits + bits->rowstride * 4 * y2;
+
+ tl = convert_pixel (row1, x1) | mask;
+ tr = convert_pixel (row1, x2) | mask;
+ bl = convert_pixel (row2, x1) | mask;
+ br = convert_pixel (row2, x2) | mask;
+ }
+ else
+ {
+ uint32_t mask1, mask2;
+ int bpp;
+
+ /* Note: PIXMAN_FORMAT_BPP() returns an unsigned value,
+ * which means if you use it in expressions, those
+ * expressions become unsigned themselves. Since
+ * the variables below can be negative in some cases,
+ * that will lead to crashes on 64 bit architectures.
+ *
+ * So this line makes sure bpp is signed
+ */
+ bpp = PIXMAN_FORMAT_BPP (format);
+
+ if (x1 >= width || x2 < 0 || y1 >= height || y2 < 0)
+ {
+ buffer[i] = 0;
+ goto next;
+ }
+
+ if (y2 == 0)
+ {
+ row1 = zero;
+ mask1 = 0;
+ }
+ else
+ {
+ row1 = (uint8_t *)bits->bits + bits->rowstride * 4 * y1;
+ row1 += bpp / 8 * x1;
+
+ mask1 = PIXMAN_FORMAT_A (format)? 0 : 0xff000000;
+ }
+
+ if (y1 == height - 1)
+ {
+ row2 = zero;
+ mask2 = 0;
+ }
+ else
+ {
+ row2 = (uint8_t *)bits->bits + bits->rowstride * 4 * y2;
+ row2 += bpp / 8 * x1;
+
+ mask2 = PIXMAN_FORMAT_A (format)? 0 : 0xff000000;
+ }
+
+ if (x2 == 0)
+ {
+ tl = 0;
+ bl = 0;
+ }
+ else
+ {
+ tl = convert_pixel (row1, 0) | mask1;
+ bl = convert_pixel (row2, 0) | mask2;
+ }
+
+ if (x1 == width - 1)
+ {
+ tr = 0;
+ br = 0;
+ }
+ else
+ {
+ tr = convert_pixel (row1, 1) | mask1;
+ br = convert_pixel (row2, 1) | mask2;
+ }
+ }
+
+ buffer[i] = bilinear_interpolation (
+ tl, tr, bl, br, distx, disty);
+
+ next:
+ x += ux;
+ y += uy;
+ }
+}
+
+static force_inline void
+bits_image_fetch_nearest_affine (pixman_image_t * image,
+ int offset,
+ int line,
+ int width,
+ uint32_t * buffer,
+ const uint32_t * mask,
+
+ convert_pixel_t convert_pixel,
+ pixman_format_code_t format,
+ pixman_repeat_t repeat_mode)
+{
+ pixman_fixed_t x, y;
+ pixman_fixed_t ux, uy;
+ pixman_vector_t v;
+ bits_image_t *bits = &image->bits;
+ int i;
+
+ /* reference point is the center of the pixel */
+ v.vector[0] = pixman_int_to_fixed (offset) + pixman_fixed_1 / 2;
+ v.vector[1] = pixman_int_to_fixed (line) + pixman_fixed_1 / 2;
+ v.vector[2] = pixman_fixed_1;
+
+ if (!pixman_transform_point_3d (image->common.transform, &v))
+ return;
+
+ ux = image->common.transform->matrix[0][0];
+ uy = image->common.transform->matrix[1][0];
+
+ x = v.vector[0];
+ y = v.vector[1];
+
+ for (i = 0; i < width; ++i)
+ {
+ int width, height, x0, y0;
+ const uint8_t *row;
+
+ if (mask && !mask[i])
+ goto next;
+
+ width = image->bits.width;
+ height = image->bits.height;
+ x0 = pixman_fixed_to_int (x - pixman_fixed_e);
+ y0 = pixman_fixed_to_int (y - pixman_fixed_e);
+
+ if (repeat_mode == PIXMAN_REPEAT_NONE &&
+ (y0 < 0 || y0 >= height || x0 < 0 || x0 >= width))
+ {
+ buffer[i] = 0;
+ }
+ else
+ {
+ uint32_t mask = PIXMAN_FORMAT_A (format)? 0 : 0xff000000;
+
+ if (repeat_mode != PIXMAN_REPEAT_NONE)
+ {
+ repeat (repeat_mode, &x0, width);
+ repeat (repeat_mode, &y0, height);
+ }
+
+ row = (uint8_t *)bits->bits + bits->rowstride * 4 * y0;
+
+ buffer[i] = convert_pixel (row, x0) | mask;
+ }
+
+ next:
+ x += ux;
+ y += uy;
+ }
+}
+
+static force_inline uint32_t
+convert_a8r8g8b8 (const uint8_t *row, int x)
+{
+ return *(((uint32_t *)row) + x);
+}
+
+static force_inline uint32_t
+convert_x8r8g8b8 (const uint8_t *row, int x)
+{
+ return *(((uint32_t *)row) + x);
+}
+
+static force_inline uint32_t
+convert_a8 (const uint8_t *row, int x)
+{
+ return *(row + x) << 24;
+}
+
+static force_inline uint32_t
+convert_r5g6b5 (const uint8_t *row, int x)
+{
+ return convert_0565_to_0888 (*((uint16_t *)row + x));
+}
+
+#define MAKE_SEPARABLE_CONVOLUTION_FETCHER(name, format, repeat_mode) \
+ static uint32_t * \
+ bits_image_fetch_separable_convolution_affine_ ## name (pixman_iter_t *iter, \
+ const uint32_t * mask) \
+ { \
+ bits_image_fetch_separable_convolution_affine ( \
+ iter->image, \
+ iter->x, iter->y++, \
+ iter->width, \
+ iter->buffer, mask, \
+ convert_ ## format, \
+ PIXMAN_ ## format, \
+ repeat_mode); \
+ \
+ return iter->buffer; \
+ }
+
+#define MAKE_BILINEAR_FETCHER(name, format, repeat_mode) \
+ static uint32_t * \
+ bits_image_fetch_bilinear_affine_ ## name (pixman_iter_t *iter, \
+ const uint32_t * mask) \
+ { \
+ bits_image_fetch_bilinear_affine (iter->image, \
+ iter->x, iter->y++, \
+ iter->width, \
+ iter->buffer, mask, \
+ convert_ ## format, \
+ PIXMAN_ ## format, \
+ repeat_mode); \
+ return iter->buffer; \
+ }
+
+#define MAKE_NEAREST_FETCHER(name, format, repeat_mode) \
+ static uint32_t * \
+ bits_image_fetch_nearest_affine_ ## name (pixman_iter_t *iter, \
+ const uint32_t * mask) \
+ { \
+ bits_image_fetch_nearest_affine (iter->image, \
+ iter->x, iter->y++, \
+ iter->width, \
+ iter->buffer, mask, \
+ convert_ ## format, \
+ PIXMAN_ ## format, \
+ repeat_mode); \
+ return iter->buffer; \
+ }
+
+#define MAKE_FETCHERS(name, format, repeat_mode) \
+ MAKE_NEAREST_FETCHER (name, format, repeat_mode) \
+ MAKE_BILINEAR_FETCHER (name, format, repeat_mode) \
+ MAKE_SEPARABLE_CONVOLUTION_FETCHER (name, format, repeat_mode)
+
+MAKE_FETCHERS (pad_a8r8g8b8, a8r8g8b8, PIXMAN_REPEAT_PAD)
+MAKE_FETCHERS (none_a8r8g8b8, a8r8g8b8, PIXMAN_REPEAT_NONE)
+MAKE_FETCHERS (reflect_a8r8g8b8, a8r8g8b8, PIXMAN_REPEAT_REFLECT)
+MAKE_FETCHERS (normal_a8r8g8b8, a8r8g8b8, PIXMAN_REPEAT_NORMAL)
+MAKE_FETCHERS (pad_x8r8g8b8, x8r8g8b8, PIXMAN_REPEAT_PAD)
+MAKE_FETCHERS (none_x8r8g8b8, x8r8g8b8, PIXMAN_REPEAT_NONE)
+MAKE_FETCHERS (reflect_x8r8g8b8, x8r8g8b8, PIXMAN_REPEAT_REFLECT)
+MAKE_FETCHERS (normal_x8r8g8b8, x8r8g8b8, PIXMAN_REPEAT_NORMAL)
+MAKE_FETCHERS (pad_a8, a8, PIXMAN_REPEAT_PAD)
+MAKE_FETCHERS (none_a8, a8, PIXMAN_REPEAT_NONE)
+MAKE_FETCHERS (reflect_a8, a8, PIXMAN_REPEAT_REFLECT)
+MAKE_FETCHERS (normal_a8, a8, PIXMAN_REPEAT_NORMAL)
+MAKE_FETCHERS (pad_r5g6b5, r5g6b5, PIXMAN_REPEAT_PAD)
+MAKE_FETCHERS (none_r5g6b5, r5g6b5, PIXMAN_REPEAT_NONE)
+MAKE_FETCHERS (reflect_r5g6b5, r5g6b5, PIXMAN_REPEAT_REFLECT)
+MAKE_FETCHERS (normal_r5g6b5, r5g6b5, PIXMAN_REPEAT_NORMAL)
+
+static void
+replicate_pixel_32 (bits_image_t * bits,
+ int x,
+ int y,
+ int width,
+ uint32_t * buffer)
+{
+ uint32_t color;
+ uint32_t *end;
+
+ color = bits->fetch_pixel_32 (bits, x, y);
+
+ end = buffer + width;
+ while (buffer < end)
+ *(buffer++) = color;
+}
+
+static void
+replicate_pixel_float (bits_image_t * bits,
+ int x,
+ int y,
+ int width,
+ uint32_t * b)
+{
+ argb_t color;
+ argb_t *buffer = (argb_t *)b;
+ argb_t *end;
+
+ color = bits->fetch_pixel_float (bits, x, y);
+
+ end = buffer + width;
+ while (buffer < end)
+ *(buffer++) = color;
+}
+
+static void
+bits_image_fetch_untransformed_repeat_none (bits_image_t *image,
+ pixman_bool_t wide,
+ int x,
+ int y,
+ int width,
+ uint32_t * buffer)
+{
+ uint32_t w;
+
+ if (y < 0 || y >= image->height)
+ {
+ memset (buffer, 0, width * (wide? sizeof (argb_t) : 4));
+ return;
+ }
+
+ if (x < 0)
+ {
+ w = MIN (width, -x);
+
+ memset (buffer, 0, w * (wide ? sizeof (argb_t) : 4));
+
+ width -= w;
+ buffer += w * (wide? 4 : 1);
+ x += w;
+ }
+
+ if (x < image->width)
+ {
+ w = MIN (width, image->width - x);
+
+ if (wide)
+ image->fetch_scanline_float ((pixman_image_t *)image, x, y, w, buffer, NULL);
+ else
+ image->fetch_scanline_32 ((pixman_image_t *)image, x, y, w, buffer, NULL);
+
+ width -= w;
+ buffer += w * (wide? 4 : 1);
+ x += w;
+ }
+
+ memset (buffer, 0, width * (wide ? sizeof (argb_t) : 4));
+}
+
+static void
+bits_image_fetch_untransformed_repeat_normal (bits_image_t *image,
+ pixman_bool_t wide,
+ int x,
+ int y,
+ int width,
+ uint32_t * buffer)
+{
+ uint32_t w;
+
+ while (y < 0)
+ y += image->height;
+
+ while (y >= image->height)
+ y -= image->height;
+
+ if (image->width == 1)
+ {
+ if (wide)
+ replicate_pixel_float (image, 0, y, width, buffer);
+ else
+ replicate_pixel_32 (image, 0, y, width, buffer);
+
+ return;
+ }
+
+ while (width)
+ {
+ while (x < 0)
+ x += image->width;
+ while (x >= image->width)
+ x -= image->width;
+
+ w = MIN (width, image->width - x);
+
+ if (wide)
+ image->fetch_scanline_float ((pixman_image_t *)image, x, y, w, buffer, NULL);
+ else
+ image->fetch_scanline_32 ((pixman_image_t *)image, x, y, w, buffer, NULL);
+
+ buffer += w * (wide? 4 : 1);
+ x += w;
+ width -= w;
+ }
+}
+
+static uint32_t *
+bits_image_fetch_untransformed_32 (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;
+
+ if (image->common.repeat == PIXMAN_REPEAT_NONE)
+ {
+ bits_image_fetch_untransformed_repeat_none (
+ &image->bits, FALSE, x, y, width, buffer);
+ }
+ else
+ {
+ bits_image_fetch_untransformed_repeat_normal (
+ &image->bits, FALSE, x, y, width, buffer);
+ }
+
+ iter->y++;
+ return buffer;
+}
+
+static uint32_t *
+bits_image_fetch_untransformed_float (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;
+
+ if (image->common.repeat == PIXMAN_REPEAT_NONE)
+ {
+ bits_image_fetch_untransformed_repeat_none (
+ &image->bits, TRUE, x, y, width, buffer);
+ }
+ else
+ {
+ bits_image_fetch_untransformed_repeat_normal (
+ &image->bits, TRUE, x, y, width, buffer);
+ }
+
+ iter->y++;
+ return buffer;
+}
+
+typedef struct
+{
+ pixman_format_code_t format;
+ uint32_t flags;
+ pixman_iter_get_scanline_t get_scanline_32;
+ pixman_iter_get_scanline_t get_scanline_float;
+} fetcher_info_t;
+
+static const fetcher_info_t fetcher_info[] =
+{
+ { PIXMAN_any,
+ (FAST_PATH_NO_ALPHA_MAP |
+ FAST_PATH_ID_TRANSFORM |
+ FAST_PATH_NO_CONVOLUTION_FILTER |
+ FAST_PATH_NO_PAD_REPEAT |
+ FAST_PATH_NO_REFLECT_REPEAT),
+ bits_image_fetch_untransformed_32,
+ bits_image_fetch_untransformed_float
+ },
+
+#define FAST_BILINEAR_FLAGS \
+ (FAST_PATH_NO_ALPHA_MAP | \
+ FAST_PATH_NO_ACCESSORS | \
+ FAST_PATH_HAS_TRANSFORM | \
+ FAST_PATH_AFFINE_TRANSFORM | \
+ FAST_PATH_X_UNIT_POSITIVE | \
+ FAST_PATH_Y_UNIT_ZERO | \
+ FAST_PATH_NONE_REPEAT | \
+ FAST_PATH_BILINEAR_FILTER)
+
+ { PIXMAN_a8r8g8b8,
+ FAST_BILINEAR_FLAGS,
+ bits_image_fetch_bilinear_no_repeat_8888,
+ _pixman_image_get_scanline_generic_float
+ },
+
+ { PIXMAN_x8r8g8b8,
+ FAST_BILINEAR_FLAGS,
+ bits_image_fetch_bilinear_no_repeat_8888,
+ _pixman_image_get_scanline_generic_float
+ },
+
+#define GENERAL_BILINEAR_FLAGS \
+ (FAST_PATH_NO_ALPHA_MAP | \
+ FAST_PATH_NO_ACCESSORS | \
+ FAST_PATH_HAS_TRANSFORM | \
+ FAST_PATH_AFFINE_TRANSFORM | \
+ FAST_PATH_BILINEAR_FILTER)
+
+#define GENERAL_NEAREST_FLAGS \
+ (FAST_PATH_NO_ALPHA_MAP | \
+ FAST_PATH_NO_ACCESSORS | \
+ FAST_PATH_HAS_TRANSFORM | \
+ FAST_PATH_AFFINE_TRANSFORM | \
+ FAST_PATH_NEAREST_FILTER)
+
+#define GENERAL_SEPARABLE_CONVOLUTION_FLAGS \
+ (FAST_PATH_NO_ALPHA_MAP | \
+ FAST_PATH_NO_ACCESSORS | \
+ FAST_PATH_HAS_TRANSFORM | \
+ FAST_PATH_AFFINE_TRANSFORM | \
+ FAST_PATH_SEPARABLE_CONVOLUTION_FILTER)
+
+#define SEPARABLE_CONVOLUTION_AFFINE_FAST_PATH(name, format, repeat) \
+ { PIXMAN_ ## format, \
+ GENERAL_SEPARABLE_CONVOLUTION_FLAGS | FAST_PATH_ ## repeat ## _REPEAT, \
+ bits_image_fetch_separable_convolution_affine_ ## name, \
+ _pixman_image_get_scanline_generic_float \
+ },
+
+#define BILINEAR_AFFINE_FAST_PATH(name, format, repeat) \
+ { PIXMAN_ ## format, \
+ GENERAL_BILINEAR_FLAGS | FAST_PATH_ ## repeat ## _REPEAT, \
+ bits_image_fetch_bilinear_affine_ ## name, \
+ _pixman_image_get_scanline_generic_float \
+ },
+
+#define NEAREST_AFFINE_FAST_PATH(name, format, repeat) \
+ { PIXMAN_ ## format, \
+ GENERAL_NEAREST_FLAGS | FAST_PATH_ ## repeat ## _REPEAT, \
+ bits_image_fetch_nearest_affine_ ## name, \
+ _pixman_image_get_scanline_generic_float \
+ },
+
+#define AFFINE_FAST_PATHS(name, format, repeat) \
+ SEPARABLE_CONVOLUTION_AFFINE_FAST_PATH(name, format, repeat) \
+ BILINEAR_AFFINE_FAST_PATH(name, format, repeat) \
+ NEAREST_AFFINE_FAST_PATH(name, format, repeat)
+
+ AFFINE_FAST_PATHS (pad_a8r8g8b8, a8r8g8b8, PAD)
+ AFFINE_FAST_PATHS (none_a8r8g8b8, a8r8g8b8, NONE)
+ AFFINE_FAST_PATHS (reflect_a8r8g8b8, a8r8g8b8, REFLECT)
+ AFFINE_FAST_PATHS (normal_a8r8g8b8, a8r8g8b8, NORMAL)
+ AFFINE_FAST_PATHS (pad_x8r8g8b8, x8r8g8b8, PAD)
+ AFFINE_FAST_PATHS (none_x8r8g8b8, x8r8g8b8, NONE)
+ AFFINE_FAST_PATHS (reflect_x8r8g8b8, x8r8g8b8, REFLECT)
+ AFFINE_FAST_PATHS (normal_x8r8g8b8, x8r8g8b8, NORMAL)
+ AFFINE_FAST_PATHS (pad_a8, a8, PAD)
+ AFFINE_FAST_PATHS (none_a8, a8, NONE)
+ AFFINE_FAST_PATHS (reflect_a8, a8, REFLECT)
+ AFFINE_FAST_PATHS (normal_a8, a8, NORMAL)
+ AFFINE_FAST_PATHS (pad_r5g6b5, r5g6b5, PAD)
+ AFFINE_FAST_PATHS (none_r5g6b5, r5g6b5, NONE)
+ AFFINE_FAST_PATHS (reflect_r5g6b5, r5g6b5, REFLECT)
+ AFFINE_FAST_PATHS (normal_r5g6b5, r5g6b5, NORMAL)
+
+ /* Affine, no alpha */
+ { PIXMAN_any,
+ (FAST_PATH_NO_ALPHA_MAP | FAST_PATH_HAS_TRANSFORM | FAST_PATH_AFFINE_TRANSFORM),
+ bits_image_fetch_affine_no_alpha,
+ _pixman_image_get_scanline_generic_float
+ },
+
+ /* General */
+ { PIXMAN_any,
+ 0,
+ bits_image_fetch_general,
+ _pixman_image_get_scanline_generic_float
+ },
+
+ { PIXMAN_null },
+};
+
+static void
+bits_image_property_changed (pixman_image_t *image)
+{
+ _pixman_bits_image_setup_accessors (&image->bits);
+}
+
+void
+_pixman_bits_image_src_iter_init (pixman_image_t *image, pixman_iter_t *iter)
+{
+ pixman_format_code_t format = image->common.extended_format_code;
+ uint32_t flags = image->common.flags;
+ const fetcher_info_t *info;
+
+ for (info = fetcher_info; info->format != PIXMAN_null; ++info)
+ {
+ if ((info->format == format || info->format == PIXMAN_any) &&
+ (info->flags & flags) == info->flags)
+ {
+ if (iter->iter_flags & ITER_NARROW)
+ {
+ iter->get_scanline = info->get_scanline_32;
+ }
+ else
+ {
+ iter->data = info->get_scanline_32;
+ iter->get_scanline = info->get_scanline_float;
+ }
+ return;
+ }
+ }
+
+ /* Just in case we somehow didn't find a scanline function */
+ iter->get_scanline = _pixman_iter_get_scanline_noop;
+}
+
+static uint32_t *
+dest_get_scanline_16 (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_16 (image, x, y, width, buffer, mask);
+
+ return iter->buffer;
+}
+
+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)
+ {
+ uint32_t *alpha;
+
+ if ((alpha = malloc (width * sizeof (uint32_t))))
+ {
+ int i;
+
+ 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, alpha, mask);
+
+ for (i = 0; i < width; ++i)
+ {
+ buffer[i] &= ~0xff000000;
+ buffer[i] |= (alpha[i] & 0xff000000);
+ }
+
+ free (alpha);
+ }
+ }
+
+ 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;
+ argb_t * buffer = (argb_t *)iter->buffer;
+
+ image->fetch_scanline_float (
+ (pixman_image_t *)image, x, y, width, (uint32_t *)buffer, mask);
+ if (image->common.alpha_map)
+ {
+ argb_t *alpha;
+
+ if ((alpha = malloc (width * sizeof (argb_t))))
+ {
+ int i;
+
+ x -= image->common.alpha_origin_x;
+ y -= image->common.alpha_origin_y;
+
+ image->common.alpha_map->fetch_scanline_float (
+ (pixman_image_t *)image->common.alpha_map,
+ x, y, width, (uint32_t *)alpha, mask);
+
+ for (i = 0; i < width; ++i)
+ buffer[i].a = alpha[i].a;
+
+ free (alpha);
+ }
+ }
+
+ return iter->buffer;
+}
+
+static void
+dest_write_back_16 (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_16 (image, x, y, width, buffer);
+
+ iter->y++;
+}
+
+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_float (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_float (
+ image->common.alpha_map, x, y, width, buffer);
+ }
+
+ iter->y++;
+}
+
+void
+_pixman_bits_image_dest_iter_init (pixman_image_t *image, pixman_iter_t *iter)
+{
+ if (iter->iter_flags & ITER_16)
+ {
+ if ((iter->iter_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_16;
+ }
+ iter->write_back = dest_write_back_16;
+ }
+ else if (iter->iter_flags & ITER_NARROW)
+ {
+ if ((iter->iter_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,
+ int * rowstride_bytes,
+ pixman_bool_t clear)
+{
+ int stride;
+ size_t buf_size;
+ int bpp;
+
+ /* what follows is a long-winded way, avoiding any possibility of integer
+ * overflows, of saying:
+ * stride = ((width * bpp + 0x1f) >> 5) * sizeof (uint32_t);
+ */
+
+ bpp = PIXMAN_FORMAT_BPP (format);
+ if (_pixman_multiply_overflows_int (width, bpp))
+ return NULL;
+
+ stride = width * bpp;
+ if (_pixman_addition_overflows_int (stride, 0x1f))
+ return NULL;
+
+ stride += 0x1f;
+ stride >>= 5;
+
+ stride *= sizeof (uint32_t);
+
+ if (_pixman_multiply_overflows_size (height, stride))
+ return NULL;
+
+ buf_size = (size_t)height * stride;
+
+ if (rowstride_bytes)
+ *rowstride_bytes = stride;
+
+ if (clear)
+ return calloc (buf_size, 1);
+ else
+ return malloc (buf_size);
+}
+
+pixman_bool_t
+_pixman_bits_image_init (pixman_image_t * image,
+ pixman_format_code_t format,
+ int width,
+ int height,
+ uint32_t * bits,
+ int rowstride,
+ pixman_bool_t clear)
+{
+ uint32_t *free_me = NULL;
+
+ if (!bits && width && height)
+ {
+ int rowstride_bytes;
+
+ free_me = bits = create_bits (format, width, height, &rowstride_bytes, clear);
+
+ if (!bits)
+ return FALSE;
+
+ rowstride = rowstride_bytes / (int) sizeof (uint32_t);
+ }
+
+ _pixman_image_init (image);
+
+ image->type = BITS;
+ image->bits.format = format;
+ image->bits.width = width;
+ image->bits.height = height;
+ image->bits.bits = bits;
+ image->bits.free_me = free_me;
+ image->bits.read_func = NULL;
+ image->bits.write_func = NULL;
+ image->bits.rowstride = rowstride;
+ image->bits.indexed = NULL;
+
+ image->common.property_changed = bits_image_property_changed;
+
+ _pixman_image_reset_clip_region (image);
+
+ return TRUE;
+}
+
+static pixman_image_t *
+create_bits_image_internal (pixman_format_code_t format,
+ int width,
+ int height,
+ uint32_t * bits,
+ int rowstride_bytes,
+ pixman_bool_t clear)
+{
+ pixman_image_t *image;
+
+ /* must be a whole number of uint32_t's
+ */
+ return_val_if_fail (
+ bits == NULL || (rowstride_bytes % sizeof (uint32_t)) == 0, NULL);
+
+ return_val_if_fail (PIXMAN_FORMAT_BPP (format) >= PIXMAN_FORMAT_DEPTH (format), NULL);
+
+ image = _pixman_image_allocate ();
+
+ if (!image)
+ return NULL;
+
+ if (!_pixman_bits_image_init (image, format, width, height, bits,
+ rowstride_bytes / (int) sizeof (uint32_t),
+ clear))
+ {
+ free (image);
+ return NULL;
+ }
+
+ return image;
+}
+
+/* If bits is NULL, a buffer will be allocated and initialized to 0 */
+PIXMAN_EXPORT pixman_image_t *
+pixman_image_create_bits (pixman_format_code_t format,
+ int width,
+ int height,
+ uint32_t * bits,
+ int rowstride_bytes)
+{
+ return create_bits_image_internal (
+ format, width, height, bits, rowstride_bytes, TRUE);
+}
+
+
+/* If bits is NULL, a buffer will be allocated and _not_ initialized */
+PIXMAN_EXPORT pixman_image_t *
+pixman_image_create_bits_no_clear (pixman_format_code_t format,
+ int width,
+ int height,
+ uint32_t * bits,
+ int rowstride_bytes)
+{
+ return create_bits_image_internal (
+ format, width, height, bits, rowstride_bytes, FALSE);
+}