1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/cairo/libpixman/src/pixman-bits-image.c Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,1849 @@
1.4 +/*
1.5 + * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
1.6 + * 2005 Lars Knoll & Zack Rusin, Trolltech
1.7 + * 2008 Aaron Plattner, NVIDIA Corporation
1.8 + * Copyright © 2000 SuSE, Inc.
1.9 + * Copyright © 2007, 2009 Red Hat, Inc.
1.10 + * Copyright © 2008 André Tupinambá <andrelrt@gmail.com>
1.11 + *
1.12 + * Permission to use, copy, modify, distribute, and sell this software and its
1.13 + * documentation for any purpose is hereby granted without fee, provided that
1.14 + * the above copyright notice appear in all copies and that both that
1.15 + * copyright notice and this permission notice appear in supporting
1.16 + * documentation, and that the name of Keith Packard not be used in
1.17 + * advertising or publicity pertaining to distribution of the software without
1.18 + * specific, written prior permission. Keith Packard makes no
1.19 + * representations about the suitability of this software for any purpose. It
1.20 + * is provided "as is" without express or implied warranty.
1.21 + *
1.22 + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
1.23 + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
1.24 + * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
1.25 + * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
1.26 + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
1.27 + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
1.28 + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
1.29 + * SOFTWARE.
1.30 + */
1.31 +
1.32 +#ifdef HAVE_CONFIG_H
1.33 +#include <config.h>
1.34 +#endif
1.35 +#include <stdio.h>
1.36 +#include <stdlib.h>
1.37 +#include <string.h>
1.38 +#include "pixman-private.h"
1.39 +#include "pixman-combine32.h"
1.40 +#include "pixman-inlines.h"
1.41 +
1.42 +static uint32_t *
1.43 +_pixman_image_get_scanline_generic_float (pixman_iter_t * iter,
1.44 + const uint32_t *mask)
1.45 +{
1.46 + pixman_iter_get_scanline_t fetch_32 = iter->data;
1.47 + uint32_t *buffer = iter->buffer;
1.48 +
1.49 + fetch_32 (iter, NULL);
1.50 +
1.51 + pixman_expand_to_float ((argb_t *)buffer, buffer, PIXMAN_a8r8g8b8, iter->width);
1.52 +
1.53 + return iter->buffer;
1.54 +}
1.55 +
1.56 +/* Fetch functions */
1.57 +
1.58 +static force_inline uint32_t
1.59 +fetch_pixel_no_alpha (bits_image_t *image,
1.60 + int x, int y, pixman_bool_t check_bounds)
1.61 +{
1.62 + if (check_bounds &&
1.63 + (x < 0 || x >= image->width || y < 0 || y >= image->height))
1.64 + {
1.65 + return 0;
1.66 + }
1.67 +
1.68 + return image->fetch_pixel_32 (image, x, y);
1.69 +}
1.70 +
1.71 +typedef uint32_t (* get_pixel_t) (bits_image_t *image,
1.72 + int x, int y, pixman_bool_t check_bounds);
1.73 +
1.74 +static force_inline uint32_t
1.75 +bits_image_fetch_pixel_nearest (bits_image_t *image,
1.76 + pixman_fixed_t x,
1.77 + pixman_fixed_t y,
1.78 + get_pixel_t get_pixel)
1.79 +{
1.80 + int x0 = pixman_fixed_to_int (x - pixman_fixed_e);
1.81 + int y0 = pixman_fixed_to_int (y - pixman_fixed_e);
1.82 +
1.83 + if (image->common.repeat != PIXMAN_REPEAT_NONE)
1.84 + {
1.85 + repeat (image->common.repeat, &x0, image->width);
1.86 + repeat (image->common.repeat, &y0, image->height);
1.87 +
1.88 + return get_pixel (image, x0, y0, FALSE);
1.89 + }
1.90 + else
1.91 + {
1.92 + return get_pixel (image, x0, y0, TRUE);
1.93 + }
1.94 +}
1.95 +
1.96 +static force_inline uint32_t
1.97 +bits_image_fetch_pixel_bilinear (bits_image_t *image,
1.98 + pixman_fixed_t x,
1.99 + pixman_fixed_t y,
1.100 + get_pixel_t get_pixel)
1.101 +{
1.102 + pixman_repeat_t repeat_mode = image->common.repeat;
1.103 + int width = image->width;
1.104 + int height = image->height;
1.105 + int x1, y1, x2, y2;
1.106 + uint32_t tl, tr, bl, br;
1.107 + int32_t distx, disty;
1.108 +
1.109 + x1 = x - pixman_fixed_1 / 2;
1.110 + y1 = y - pixman_fixed_1 / 2;
1.111 +
1.112 + distx = pixman_fixed_to_bilinear_weight (x1);
1.113 + disty = pixman_fixed_to_bilinear_weight (y1);
1.114 +
1.115 + x1 = pixman_fixed_to_int (x1);
1.116 + y1 = pixman_fixed_to_int (y1);
1.117 + x2 = x1 + 1;
1.118 + y2 = y1 + 1;
1.119 +
1.120 + if (repeat_mode != PIXMAN_REPEAT_NONE)
1.121 + {
1.122 + repeat (repeat_mode, &x1, width);
1.123 + repeat (repeat_mode, &y1, height);
1.124 + repeat (repeat_mode, &x2, width);
1.125 + repeat (repeat_mode, &y2, height);
1.126 +
1.127 + tl = get_pixel (image, x1, y1, FALSE);
1.128 + bl = get_pixel (image, x1, y2, FALSE);
1.129 + tr = get_pixel (image, x2, y1, FALSE);
1.130 + br = get_pixel (image, x2, y2, FALSE);
1.131 + }
1.132 + else
1.133 + {
1.134 + tl = get_pixel (image, x1, y1, TRUE);
1.135 + tr = get_pixel (image, x2, y1, TRUE);
1.136 + bl = get_pixel (image, x1, y2, TRUE);
1.137 + br = get_pixel (image, x2, y2, TRUE);
1.138 + }
1.139 +
1.140 + return bilinear_interpolation (tl, tr, bl, br, distx, disty);
1.141 +}
1.142 +
1.143 +static uint32_t *
1.144 +bits_image_fetch_bilinear_no_repeat_8888 (pixman_iter_t *iter,
1.145 + const uint32_t *mask)
1.146 +{
1.147 +
1.148 + pixman_image_t * ima = iter->image;
1.149 + int offset = iter->x;
1.150 + int line = iter->y++;
1.151 + int width = iter->width;
1.152 + uint32_t * buffer = iter->buffer;
1.153 +
1.154 + bits_image_t *bits = &ima->bits;
1.155 + pixman_fixed_t x_top, x_bottom, x;
1.156 + pixman_fixed_t ux_top, ux_bottom, ux;
1.157 + pixman_vector_t v;
1.158 + uint32_t top_mask, bottom_mask;
1.159 + uint32_t *top_row;
1.160 + uint32_t *bottom_row;
1.161 + uint32_t *end;
1.162 + uint32_t zero[2] = { 0, 0 };
1.163 + uint32_t one = 1;
1.164 + int y, y1, y2;
1.165 + int disty;
1.166 + int mask_inc;
1.167 + int w;
1.168 +
1.169 + /* reference point is the center of the pixel */
1.170 + v.vector[0] = pixman_int_to_fixed (offset) + pixman_fixed_1 / 2;
1.171 + v.vector[1] = pixman_int_to_fixed (line) + pixman_fixed_1 / 2;
1.172 + v.vector[2] = pixman_fixed_1;
1.173 +
1.174 + if (!pixman_transform_point_3d (bits->common.transform, &v))
1.175 + return iter->buffer;
1.176 +
1.177 + ux = ux_top = ux_bottom = bits->common.transform->matrix[0][0];
1.178 + x = x_top = x_bottom = v.vector[0] - pixman_fixed_1/2;
1.179 +
1.180 + y = v.vector[1] - pixman_fixed_1/2;
1.181 + disty = pixman_fixed_to_bilinear_weight (y);
1.182 +
1.183 + /* Load the pointers to the first and second lines from the source
1.184 + * image that bilinear code must read.
1.185 + *
1.186 + * The main trick in this code is about the check if any line are
1.187 + * outside of the image;
1.188 + *
1.189 + * When I realize that a line (any one) is outside, I change
1.190 + * the pointer to a dummy area with zeros. Once I change this, I
1.191 + * must be sure the pointer will not change, so I set the
1.192 + * variables to each pointer increments inside the loop.
1.193 + */
1.194 + y1 = pixman_fixed_to_int (y);
1.195 + y2 = y1 + 1;
1.196 +
1.197 + if (y1 < 0 || y1 >= bits->height)
1.198 + {
1.199 + top_row = zero;
1.200 + x_top = 0;
1.201 + ux_top = 0;
1.202 + }
1.203 + else
1.204 + {
1.205 + top_row = bits->bits + y1 * bits->rowstride;
1.206 + x_top = x;
1.207 + ux_top = ux;
1.208 + }
1.209 +
1.210 + if (y2 < 0 || y2 >= bits->height)
1.211 + {
1.212 + bottom_row = zero;
1.213 + x_bottom = 0;
1.214 + ux_bottom = 0;
1.215 + }
1.216 + else
1.217 + {
1.218 + bottom_row = bits->bits + y2 * bits->rowstride;
1.219 + x_bottom = x;
1.220 + ux_bottom = ux;
1.221 + }
1.222 +
1.223 + /* Instead of checking whether the operation uses the mast in
1.224 + * each loop iteration, verify this only once and prepare the
1.225 + * variables to make the code smaller inside the loop.
1.226 + */
1.227 + if (!mask)
1.228 + {
1.229 + mask_inc = 0;
1.230 + mask = &one;
1.231 + }
1.232 + else
1.233 + {
1.234 + /* If have a mask, prepare the variables to check it */
1.235 + mask_inc = 1;
1.236 + }
1.237 +
1.238 + /* If both are zero, then the whole thing is zero */
1.239 + if (top_row == zero && bottom_row == zero)
1.240 + {
1.241 + memset (buffer, 0, width * sizeof (uint32_t));
1.242 + return iter->buffer;
1.243 + }
1.244 + else if (bits->format == PIXMAN_x8r8g8b8)
1.245 + {
1.246 + if (top_row == zero)
1.247 + {
1.248 + top_mask = 0;
1.249 + bottom_mask = 0xff000000;
1.250 + }
1.251 + else if (bottom_row == zero)
1.252 + {
1.253 + top_mask = 0xff000000;
1.254 + bottom_mask = 0;
1.255 + }
1.256 + else
1.257 + {
1.258 + top_mask = 0xff000000;
1.259 + bottom_mask = 0xff000000;
1.260 + }
1.261 + }
1.262 + else
1.263 + {
1.264 + top_mask = 0;
1.265 + bottom_mask = 0;
1.266 + }
1.267 +
1.268 + end = buffer + width;
1.269 +
1.270 + /* Zero fill to the left of the image */
1.271 + while (buffer < end && x < pixman_fixed_minus_1)
1.272 + {
1.273 + *buffer++ = 0;
1.274 + x += ux;
1.275 + x_top += ux_top;
1.276 + x_bottom += ux_bottom;
1.277 + mask += mask_inc;
1.278 + }
1.279 +
1.280 + /* Left edge
1.281 + */
1.282 + while (buffer < end && x < 0)
1.283 + {
1.284 + uint32_t tr, br;
1.285 + int32_t distx;
1.286 +
1.287 + tr = top_row[pixman_fixed_to_int (x_top) + 1] | top_mask;
1.288 + br = bottom_row[pixman_fixed_to_int (x_bottom) + 1] | bottom_mask;
1.289 +
1.290 + distx = pixman_fixed_to_bilinear_weight (x);
1.291 +
1.292 + *buffer++ = bilinear_interpolation (0, tr, 0, br, distx, disty);
1.293 +
1.294 + x += ux;
1.295 + x_top += ux_top;
1.296 + x_bottom += ux_bottom;
1.297 + mask += mask_inc;
1.298 + }
1.299 +
1.300 + /* Main part */
1.301 + w = pixman_int_to_fixed (bits->width - 1);
1.302 +
1.303 + while (buffer < end && x < w)
1.304 + {
1.305 + if (*mask)
1.306 + {
1.307 + uint32_t tl, tr, bl, br;
1.308 + int32_t distx;
1.309 +
1.310 + tl = top_row [pixman_fixed_to_int (x_top)] | top_mask;
1.311 + tr = top_row [pixman_fixed_to_int (x_top) + 1] | top_mask;
1.312 + bl = bottom_row [pixman_fixed_to_int (x_bottom)] | bottom_mask;
1.313 + br = bottom_row [pixman_fixed_to_int (x_bottom) + 1] | bottom_mask;
1.314 +
1.315 + distx = pixman_fixed_to_bilinear_weight (x);
1.316 +
1.317 + *buffer = bilinear_interpolation (tl, tr, bl, br, distx, disty);
1.318 + }
1.319 +
1.320 + buffer++;
1.321 + x += ux;
1.322 + x_top += ux_top;
1.323 + x_bottom += ux_bottom;
1.324 + mask += mask_inc;
1.325 + }
1.326 +
1.327 + /* Right Edge */
1.328 + w = pixman_int_to_fixed (bits->width);
1.329 + while (buffer < end && x < w)
1.330 + {
1.331 + if (*mask)
1.332 + {
1.333 + uint32_t tl, bl;
1.334 + int32_t distx;
1.335 +
1.336 + tl = top_row [pixman_fixed_to_int (x_top)] | top_mask;
1.337 + bl = bottom_row [pixman_fixed_to_int (x_bottom)] | bottom_mask;
1.338 +
1.339 + distx = pixman_fixed_to_bilinear_weight (x);
1.340 +
1.341 + *buffer = bilinear_interpolation (tl, 0, bl, 0, distx, disty);
1.342 + }
1.343 +
1.344 + buffer++;
1.345 + x += ux;
1.346 + x_top += ux_top;
1.347 + x_bottom += ux_bottom;
1.348 + mask += mask_inc;
1.349 + }
1.350 +
1.351 + /* Zero fill to the left of the image */
1.352 + while (buffer < end)
1.353 + *buffer++ = 0;
1.354 +
1.355 + return iter->buffer;
1.356 +}
1.357 +
1.358 +static force_inline uint32_t
1.359 +bits_image_fetch_pixel_convolution (bits_image_t *image,
1.360 + pixman_fixed_t x,
1.361 + pixman_fixed_t y,
1.362 + get_pixel_t get_pixel)
1.363 +{
1.364 + pixman_fixed_t *params = image->common.filter_params;
1.365 + int x_off = (params[0] - pixman_fixed_1) >> 1;
1.366 + int y_off = (params[1] - pixman_fixed_1) >> 1;
1.367 + int32_t cwidth = pixman_fixed_to_int (params[0]);
1.368 + int32_t cheight = pixman_fixed_to_int (params[1]);
1.369 + int32_t i, j, x1, x2, y1, y2;
1.370 + pixman_repeat_t repeat_mode = image->common.repeat;
1.371 + int width = image->width;
1.372 + int height = image->height;
1.373 + int srtot, sgtot, sbtot, satot;
1.374 +
1.375 + params += 2;
1.376 +
1.377 + x1 = pixman_fixed_to_int (x - pixman_fixed_e - x_off);
1.378 + y1 = pixman_fixed_to_int (y - pixman_fixed_e - y_off);
1.379 + x2 = x1 + cwidth;
1.380 + y2 = y1 + cheight;
1.381 +
1.382 + srtot = sgtot = sbtot = satot = 0;
1.383 +
1.384 + for (i = y1; i < y2; ++i)
1.385 + {
1.386 + for (j = x1; j < x2; ++j)
1.387 + {
1.388 + int rx = j;
1.389 + int ry = i;
1.390 +
1.391 + pixman_fixed_t f = *params;
1.392 +
1.393 + if (f)
1.394 + {
1.395 + uint32_t pixel;
1.396 +
1.397 + if (repeat_mode != PIXMAN_REPEAT_NONE)
1.398 + {
1.399 + repeat (repeat_mode, &rx, width);
1.400 + repeat (repeat_mode, &ry, height);
1.401 +
1.402 + pixel = get_pixel (image, rx, ry, FALSE);
1.403 + }
1.404 + else
1.405 + {
1.406 + pixel = get_pixel (image, rx, ry, TRUE);
1.407 + }
1.408 +
1.409 + srtot += (int)RED_8 (pixel) * f;
1.410 + sgtot += (int)GREEN_8 (pixel) * f;
1.411 + sbtot += (int)BLUE_8 (pixel) * f;
1.412 + satot += (int)ALPHA_8 (pixel) * f;
1.413 + }
1.414 +
1.415 + params++;
1.416 + }
1.417 + }
1.418 +
1.419 + satot = (satot + 0x8000) >> 16;
1.420 + srtot = (srtot + 0x8000) >> 16;
1.421 + sgtot = (sgtot + 0x8000) >> 16;
1.422 + sbtot = (sbtot + 0x8000) >> 16;
1.423 +
1.424 + satot = CLIP (satot, 0, 0xff);
1.425 + srtot = CLIP (srtot, 0, 0xff);
1.426 + sgtot = CLIP (sgtot, 0, 0xff);
1.427 + sbtot = CLIP (sbtot, 0, 0xff);
1.428 +
1.429 + return ((satot << 24) | (srtot << 16) | (sgtot << 8) | (sbtot));
1.430 +}
1.431 +
1.432 +static uint32_t
1.433 +bits_image_fetch_pixel_separable_convolution (bits_image_t *image,
1.434 + pixman_fixed_t x,
1.435 + pixman_fixed_t y,
1.436 + get_pixel_t get_pixel)
1.437 +{
1.438 + pixman_fixed_t *params = image->common.filter_params;
1.439 + pixman_repeat_t repeat_mode = image->common.repeat;
1.440 + int width = image->width;
1.441 + int height = image->height;
1.442 + int cwidth = pixman_fixed_to_int (params[0]);
1.443 + int cheight = pixman_fixed_to_int (params[1]);
1.444 + int x_phase_bits = pixman_fixed_to_int (params[2]);
1.445 + int y_phase_bits = pixman_fixed_to_int (params[3]);
1.446 + int x_phase_shift = 16 - x_phase_bits;
1.447 + int y_phase_shift = 16 - y_phase_bits;
1.448 + int x_off = ((cwidth << 16) - pixman_fixed_1) >> 1;
1.449 + int y_off = ((cheight << 16) - pixman_fixed_1) >> 1;
1.450 + pixman_fixed_t *y_params;
1.451 + int srtot, sgtot, sbtot, satot;
1.452 + int32_t x1, x2, y1, y2;
1.453 + int32_t px, py;
1.454 + int i, j;
1.455 +
1.456 + /* Round x and y to the middle of the closest phase before continuing. This
1.457 + * ensures that the convolution matrix is aligned right, since it was
1.458 + * positioned relative to a particular phase (and not relative to whatever
1.459 + * exact fraction we happen to get here).
1.460 + */
1.461 + x = ((x >> x_phase_shift) << x_phase_shift) + ((1 << x_phase_shift) >> 1);
1.462 + y = ((y >> y_phase_shift) << y_phase_shift) + ((1 << y_phase_shift) >> 1);
1.463 +
1.464 + px = (x & 0xffff) >> x_phase_shift;
1.465 + py = (y & 0xffff) >> y_phase_shift;
1.466 +
1.467 + y_params = params + 4 + (1 << x_phase_bits) * cwidth + py * cheight;
1.468 +
1.469 + x1 = pixman_fixed_to_int (x - pixman_fixed_e - x_off);
1.470 + y1 = pixman_fixed_to_int (y - pixman_fixed_e - y_off);
1.471 + x2 = x1 + cwidth;
1.472 + y2 = y1 + cheight;
1.473 +
1.474 + srtot = sgtot = sbtot = satot = 0;
1.475 +
1.476 + for (i = y1; i < y2; ++i)
1.477 + {
1.478 + pixman_fixed_48_16_t fy = *y_params++;
1.479 + pixman_fixed_t *x_params = params + 4 + px * cwidth;
1.480 +
1.481 + if (fy)
1.482 + {
1.483 + for (j = x1; j < x2; ++j)
1.484 + {
1.485 + pixman_fixed_t fx = *x_params++;
1.486 + int rx = j;
1.487 + int ry = i;
1.488 +
1.489 + if (fx)
1.490 + {
1.491 + pixman_fixed_t f;
1.492 + uint32_t pixel;
1.493 +
1.494 + if (repeat_mode != PIXMAN_REPEAT_NONE)
1.495 + {
1.496 + repeat (repeat_mode, &rx, width);
1.497 + repeat (repeat_mode, &ry, height);
1.498 +
1.499 + pixel = get_pixel (image, rx, ry, FALSE);
1.500 + }
1.501 + else
1.502 + {
1.503 + pixel = get_pixel (image, rx, ry, TRUE);
1.504 + }
1.505 +
1.506 + f = (fy * fx + 0x8000) >> 16;
1.507 +
1.508 + srtot += (int)RED_8 (pixel) * f;
1.509 + sgtot += (int)GREEN_8 (pixel) * f;
1.510 + sbtot += (int)BLUE_8 (pixel) * f;
1.511 + satot += (int)ALPHA_8 (pixel) * f;
1.512 + }
1.513 + }
1.514 + }
1.515 + }
1.516 +
1.517 + satot = (satot + 0x8000) >> 16;
1.518 + srtot = (srtot + 0x8000) >> 16;
1.519 + sgtot = (sgtot + 0x8000) >> 16;
1.520 + sbtot = (sbtot + 0x8000) >> 16;
1.521 +
1.522 + satot = CLIP (satot, 0, 0xff);
1.523 + srtot = CLIP (srtot, 0, 0xff);
1.524 + sgtot = CLIP (sgtot, 0, 0xff);
1.525 + sbtot = CLIP (sbtot, 0, 0xff);
1.526 +
1.527 + return ((satot << 24) | (srtot << 16) | (sgtot << 8) | (sbtot));
1.528 +}
1.529 +
1.530 +static force_inline uint32_t
1.531 +bits_image_fetch_pixel_filtered (bits_image_t *image,
1.532 + pixman_fixed_t x,
1.533 + pixman_fixed_t y,
1.534 + get_pixel_t get_pixel)
1.535 +{
1.536 + switch (image->common.filter)
1.537 + {
1.538 + case PIXMAN_FILTER_NEAREST:
1.539 + case PIXMAN_FILTER_FAST:
1.540 + return bits_image_fetch_pixel_nearest (image, x, y, get_pixel);
1.541 + break;
1.542 +
1.543 + case PIXMAN_FILTER_BILINEAR:
1.544 + case PIXMAN_FILTER_GOOD:
1.545 + case PIXMAN_FILTER_BEST:
1.546 + return bits_image_fetch_pixel_bilinear (image, x, y, get_pixel);
1.547 + break;
1.548 +
1.549 + case PIXMAN_FILTER_CONVOLUTION:
1.550 + return bits_image_fetch_pixel_convolution (image, x, y, get_pixel);
1.551 + break;
1.552 +
1.553 + case PIXMAN_FILTER_SEPARABLE_CONVOLUTION:
1.554 + return bits_image_fetch_pixel_separable_convolution (image, x, y, get_pixel);
1.555 + break;
1.556 +
1.557 + default:
1.558 + break;
1.559 + }
1.560 +
1.561 + return 0;
1.562 +}
1.563 +
1.564 +static uint32_t *
1.565 +bits_image_fetch_affine_no_alpha (pixman_iter_t * iter,
1.566 + const uint32_t * mask)
1.567 +{
1.568 + pixman_image_t *image = iter->image;
1.569 + int offset = iter->x;
1.570 + int line = iter->y++;
1.571 + int width = iter->width;
1.572 + uint32_t * buffer = iter->buffer;
1.573 +
1.574 + pixman_fixed_t x, y;
1.575 + pixman_fixed_t ux, uy;
1.576 + pixman_vector_t v;
1.577 + int i;
1.578 +
1.579 + /* reference point is the center of the pixel */
1.580 + v.vector[0] = pixman_int_to_fixed (offset) + pixman_fixed_1 / 2;
1.581 + v.vector[1] = pixman_int_to_fixed (line) + pixman_fixed_1 / 2;
1.582 + v.vector[2] = pixman_fixed_1;
1.583 +
1.584 + if (image->common.transform)
1.585 + {
1.586 + if (!pixman_transform_point_3d (image->common.transform, &v))
1.587 + return iter->buffer;
1.588 +
1.589 + ux = image->common.transform->matrix[0][0];
1.590 + uy = image->common.transform->matrix[1][0];
1.591 + }
1.592 + else
1.593 + {
1.594 + ux = pixman_fixed_1;
1.595 + uy = 0;
1.596 + }
1.597 +
1.598 + x = v.vector[0];
1.599 + y = v.vector[1];
1.600 +
1.601 + for (i = 0; i < width; ++i)
1.602 + {
1.603 + if (!mask || mask[i])
1.604 + {
1.605 + buffer[i] = bits_image_fetch_pixel_filtered (
1.606 + &image->bits, x, y, fetch_pixel_no_alpha);
1.607 + }
1.608 +
1.609 + x += ux;
1.610 + y += uy;
1.611 + }
1.612 +
1.613 + return buffer;
1.614 +}
1.615 +
1.616 +/* General fetcher */
1.617 +static force_inline uint32_t
1.618 +fetch_pixel_general (bits_image_t *image, int x, int y, pixman_bool_t check_bounds)
1.619 +{
1.620 + uint32_t pixel;
1.621 +
1.622 + if (check_bounds &&
1.623 + (x < 0 || x >= image->width || y < 0 || y >= image->height))
1.624 + {
1.625 + return 0;
1.626 + }
1.627 +
1.628 + pixel = image->fetch_pixel_32 (image, x, y);
1.629 +
1.630 + if (image->common.alpha_map)
1.631 + {
1.632 + uint32_t pixel_a;
1.633 +
1.634 + x -= image->common.alpha_origin_x;
1.635 + y -= image->common.alpha_origin_y;
1.636 +
1.637 + if (x < 0 || x >= image->common.alpha_map->width ||
1.638 + y < 0 || y >= image->common.alpha_map->height)
1.639 + {
1.640 + pixel_a = 0;
1.641 + }
1.642 + else
1.643 + {
1.644 + pixel_a = image->common.alpha_map->fetch_pixel_32 (
1.645 + image->common.alpha_map, x, y);
1.646 +
1.647 + pixel_a = ALPHA_8 (pixel_a);
1.648 + }
1.649 +
1.650 + pixel &= 0x00ffffff;
1.651 + pixel |= (pixel_a << 24);
1.652 + }
1.653 +
1.654 + return pixel;
1.655 +}
1.656 +
1.657 +static uint32_t *
1.658 +bits_image_fetch_general (pixman_iter_t *iter,
1.659 + const uint32_t *mask)
1.660 +{
1.661 + pixman_image_t *image = iter->image;
1.662 + int offset = iter->x;
1.663 + int line = iter->y++;
1.664 + int width = iter->width;
1.665 + uint32_t * buffer = iter->buffer;
1.666 +
1.667 + pixman_fixed_t x, y, w;
1.668 + pixman_fixed_t ux, uy, uw;
1.669 + pixman_vector_t v;
1.670 + int i;
1.671 +
1.672 + /* reference point is the center of the pixel */
1.673 + v.vector[0] = pixman_int_to_fixed (offset) + pixman_fixed_1 / 2;
1.674 + v.vector[1] = pixman_int_to_fixed (line) + pixman_fixed_1 / 2;
1.675 + v.vector[2] = pixman_fixed_1;
1.676 +
1.677 + if (image->common.transform)
1.678 + {
1.679 + if (!pixman_transform_point_3d (image->common.transform, &v))
1.680 + return buffer;
1.681 +
1.682 + ux = image->common.transform->matrix[0][0];
1.683 + uy = image->common.transform->matrix[1][0];
1.684 + uw = image->common.transform->matrix[2][0];
1.685 + }
1.686 + else
1.687 + {
1.688 + ux = pixman_fixed_1;
1.689 + uy = 0;
1.690 + uw = 0;
1.691 + }
1.692 +
1.693 + x = v.vector[0];
1.694 + y = v.vector[1];
1.695 + w = v.vector[2];
1.696 +
1.697 + for (i = 0; i < width; ++i)
1.698 + {
1.699 + pixman_fixed_t x0, y0;
1.700 +
1.701 + if (!mask || mask[i])
1.702 + {
1.703 + if (w != 0)
1.704 + {
1.705 + x0 = ((pixman_fixed_48_16_t)x << 16) / w;
1.706 + y0 = ((pixman_fixed_48_16_t)y << 16) / w;
1.707 + }
1.708 + else
1.709 + {
1.710 + x0 = 0;
1.711 + y0 = 0;
1.712 + }
1.713 +
1.714 + buffer[i] = bits_image_fetch_pixel_filtered (
1.715 + &image->bits, x0, y0, fetch_pixel_general);
1.716 + }
1.717 +
1.718 + x += ux;
1.719 + y += uy;
1.720 + w += uw;
1.721 + }
1.722 +
1.723 + return buffer;
1.724 +}
1.725 +
1.726 +typedef uint32_t (* convert_pixel_t) (const uint8_t *row, int x);
1.727 +
1.728 +static force_inline void
1.729 +bits_image_fetch_separable_convolution_affine (pixman_image_t * image,
1.730 + int offset,
1.731 + int line,
1.732 + int width,
1.733 + uint32_t * buffer,
1.734 + const uint32_t * mask,
1.735 +
1.736 + convert_pixel_t convert_pixel,
1.737 + pixman_format_code_t format,
1.738 + pixman_repeat_t repeat_mode)
1.739 +{
1.740 + bits_image_t *bits = &image->bits;
1.741 + pixman_fixed_t *params = image->common.filter_params;
1.742 + int cwidth = pixman_fixed_to_int (params[0]);
1.743 + int cheight = pixman_fixed_to_int (params[1]);
1.744 + int x_off = ((cwidth << 16) - pixman_fixed_1) >> 1;
1.745 + int y_off = ((cheight << 16) - pixman_fixed_1) >> 1;
1.746 + int x_phase_bits = pixman_fixed_to_int (params[2]);
1.747 + int y_phase_bits = pixman_fixed_to_int (params[3]);
1.748 + int x_phase_shift = 16 - x_phase_bits;
1.749 + int y_phase_shift = 16 - y_phase_bits;
1.750 + pixman_fixed_t vx, vy;
1.751 + pixman_fixed_t ux, uy;
1.752 + pixman_vector_t v;
1.753 + int k;
1.754 +
1.755 + /* reference point is the center of the pixel */
1.756 + v.vector[0] = pixman_int_to_fixed (offset) + pixman_fixed_1 / 2;
1.757 + v.vector[1] = pixman_int_to_fixed (line) + pixman_fixed_1 / 2;
1.758 + v.vector[2] = pixman_fixed_1;
1.759 +
1.760 + if (!pixman_transform_point_3d (image->common.transform, &v))
1.761 + return;
1.762 +
1.763 + ux = image->common.transform->matrix[0][0];
1.764 + uy = image->common.transform->matrix[1][0];
1.765 +
1.766 + vx = v.vector[0];
1.767 + vy = v.vector[1];
1.768 +
1.769 + for (k = 0; k < width; ++k)
1.770 + {
1.771 + pixman_fixed_t *y_params;
1.772 + int satot, srtot, sgtot, sbtot;
1.773 + pixman_fixed_t x, y;
1.774 + int32_t x1, x2, y1, y2;
1.775 + int32_t px, py;
1.776 + int i, j;
1.777 +
1.778 + if (mask && !mask[k])
1.779 + goto next;
1.780 +
1.781 + /* Round x and y to the middle of the closest phase before continuing. This
1.782 + * ensures that the convolution matrix is aligned right, since it was
1.783 + * positioned relative to a particular phase (and not relative to whatever
1.784 + * exact fraction we happen to get here).
1.785 + */
1.786 + x = ((vx >> x_phase_shift) << x_phase_shift) + ((1 << x_phase_shift) >> 1);
1.787 + y = ((vy >> y_phase_shift) << y_phase_shift) + ((1 << y_phase_shift) >> 1);
1.788 +
1.789 + px = (x & 0xffff) >> x_phase_shift;
1.790 + py = (y & 0xffff) >> y_phase_shift;
1.791 +
1.792 + x1 = pixman_fixed_to_int (x - pixman_fixed_e - x_off);
1.793 + y1 = pixman_fixed_to_int (y - pixman_fixed_e - y_off);
1.794 + x2 = x1 + cwidth;
1.795 + y2 = y1 + cheight;
1.796 +
1.797 + satot = srtot = sgtot = sbtot = 0;
1.798 +
1.799 + y_params = params + 4 + (1 << x_phase_bits) * cwidth + py * cheight;
1.800 +
1.801 + for (i = y1; i < y2; ++i)
1.802 + {
1.803 + pixman_fixed_t fy = *y_params++;
1.804 +
1.805 + if (fy)
1.806 + {
1.807 + pixman_fixed_t *x_params = params + 4 + px * cwidth;
1.808 +
1.809 + for (j = x1; j < x2; ++j)
1.810 + {
1.811 + pixman_fixed_t fx = *x_params++;
1.812 + int rx = j;
1.813 + int ry = i;
1.814 +
1.815 + if (fx)
1.816 + {
1.817 + pixman_fixed_t f;
1.818 + uint32_t pixel, mask;
1.819 + uint8_t *row;
1.820 +
1.821 + mask = PIXMAN_FORMAT_A (format)? 0 : 0xff000000;
1.822 +
1.823 + if (repeat_mode != PIXMAN_REPEAT_NONE)
1.824 + {
1.825 + repeat (repeat_mode, &rx, bits->width);
1.826 + repeat (repeat_mode, &ry, bits->height);
1.827 +
1.828 + row = (uint8_t *)bits->bits + bits->rowstride * 4 * ry;
1.829 + pixel = convert_pixel (row, rx) | mask;
1.830 + }
1.831 + else
1.832 + {
1.833 + if (rx < 0 || ry < 0 || rx >= bits->width || ry >= bits->height)
1.834 + {
1.835 + pixel = 0;
1.836 + }
1.837 + else
1.838 + {
1.839 + row = (uint8_t *)bits->bits + bits->rowstride * 4 * ry;
1.840 + pixel = convert_pixel (row, rx) | mask;
1.841 + }
1.842 + }
1.843 +
1.844 + f = ((pixman_fixed_32_32_t)fx * fy + 0x8000) >> 16;
1.845 + srtot += (int)RED_8 (pixel) * f;
1.846 + sgtot += (int)GREEN_8 (pixel) * f;
1.847 + sbtot += (int)BLUE_8 (pixel) * f;
1.848 + satot += (int)ALPHA_8 (pixel) * f;
1.849 + }
1.850 + }
1.851 + }
1.852 + }
1.853 +
1.854 + satot = (satot + 0x8000) >> 16;
1.855 + srtot = (srtot + 0x8000) >> 16;
1.856 + sgtot = (sgtot + 0x8000) >> 16;
1.857 + sbtot = (sbtot + 0x8000) >> 16;
1.858 +
1.859 + satot = CLIP (satot, 0, 0xff);
1.860 + srtot = CLIP (srtot, 0, 0xff);
1.861 + sgtot = CLIP (sgtot, 0, 0xff);
1.862 + sbtot = CLIP (sbtot, 0, 0xff);
1.863 +
1.864 + buffer[k] = (satot << 24) | (srtot << 16) | (sgtot << 8) | (sbtot << 0);
1.865 +
1.866 + next:
1.867 + vx += ux;
1.868 + vy += uy;
1.869 + }
1.870 +}
1.871 +
1.872 +static const uint8_t zero[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
1.873 +
1.874 +static force_inline void
1.875 +bits_image_fetch_bilinear_affine (pixman_image_t * image,
1.876 + int offset,
1.877 + int line,
1.878 + int width,
1.879 + uint32_t * buffer,
1.880 + const uint32_t * mask,
1.881 +
1.882 + convert_pixel_t convert_pixel,
1.883 + pixman_format_code_t format,
1.884 + pixman_repeat_t repeat_mode)
1.885 +{
1.886 + pixman_fixed_t x, y;
1.887 + pixman_fixed_t ux, uy;
1.888 + pixman_vector_t v;
1.889 + bits_image_t *bits = &image->bits;
1.890 + int i;
1.891 +
1.892 + /* reference point is the center of the pixel */
1.893 + v.vector[0] = pixman_int_to_fixed (offset) + pixman_fixed_1 / 2;
1.894 + v.vector[1] = pixman_int_to_fixed (line) + pixman_fixed_1 / 2;
1.895 + v.vector[2] = pixman_fixed_1;
1.896 +
1.897 + if (!pixman_transform_point_3d (image->common.transform, &v))
1.898 + return;
1.899 +
1.900 + ux = image->common.transform->matrix[0][0];
1.901 + uy = image->common.transform->matrix[1][0];
1.902 +
1.903 + x = v.vector[0];
1.904 + y = v.vector[1];
1.905 +
1.906 + for (i = 0; i < width; ++i)
1.907 + {
1.908 + int x1, y1, x2, y2;
1.909 + uint32_t tl, tr, bl, br;
1.910 + int32_t distx, disty;
1.911 + int width = image->bits.width;
1.912 + int height = image->bits.height;
1.913 + const uint8_t *row1;
1.914 + const uint8_t *row2;
1.915 +
1.916 + if (mask && !mask[i])
1.917 + goto next;
1.918 +
1.919 + x1 = x - pixman_fixed_1 / 2;
1.920 + y1 = y - pixman_fixed_1 / 2;
1.921 +
1.922 + distx = pixman_fixed_to_bilinear_weight (x1);
1.923 + disty = pixman_fixed_to_bilinear_weight (y1);
1.924 +
1.925 + y1 = pixman_fixed_to_int (y1);
1.926 + y2 = y1 + 1;
1.927 + x1 = pixman_fixed_to_int (x1);
1.928 + x2 = x1 + 1;
1.929 +
1.930 + if (repeat_mode != PIXMAN_REPEAT_NONE)
1.931 + {
1.932 + uint32_t mask;
1.933 +
1.934 + mask = PIXMAN_FORMAT_A (format)? 0 : 0xff000000;
1.935 +
1.936 + repeat (repeat_mode, &x1, width);
1.937 + repeat (repeat_mode, &y1, height);
1.938 + repeat (repeat_mode, &x2, width);
1.939 + repeat (repeat_mode, &y2, height);
1.940 +
1.941 + row1 = (uint8_t *)bits->bits + bits->rowstride * 4 * y1;
1.942 + row2 = (uint8_t *)bits->bits + bits->rowstride * 4 * y2;
1.943 +
1.944 + tl = convert_pixel (row1, x1) | mask;
1.945 + tr = convert_pixel (row1, x2) | mask;
1.946 + bl = convert_pixel (row2, x1) | mask;
1.947 + br = convert_pixel (row2, x2) | mask;
1.948 + }
1.949 + else
1.950 + {
1.951 + uint32_t mask1, mask2;
1.952 + int bpp;
1.953 +
1.954 + /* Note: PIXMAN_FORMAT_BPP() returns an unsigned value,
1.955 + * which means if you use it in expressions, those
1.956 + * expressions become unsigned themselves. Since
1.957 + * the variables below can be negative in some cases,
1.958 + * that will lead to crashes on 64 bit architectures.
1.959 + *
1.960 + * So this line makes sure bpp is signed
1.961 + */
1.962 + bpp = PIXMAN_FORMAT_BPP (format);
1.963 +
1.964 + if (x1 >= width || x2 < 0 || y1 >= height || y2 < 0)
1.965 + {
1.966 + buffer[i] = 0;
1.967 + goto next;
1.968 + }
1.969 +
1.970 + if (y2 == 0)
1.971 + {
1.972 + row1 = zero;
1.973 + mask1 = 0;
1.974 + }
1.975 + else
1.976 + {
1.977 + row1 = (uint8_t *)bits->bits + bits->rowstride * 4 * y1;
1.978 + row1 += bpp / 8 * x1;
1.979 +
1.980 + mask1 = PIXMAN_FORMAT_A (format)? 0 : 0xff000000;
1.981 + }
1.982 +
1.983 + if (y1 == height - 1)
1.984 + {
1.985 + row2 = zero;
1.986 + mask2 = 0;
1.987 + }
1.988 + else
1.989 + {
1.990 + row2 = (uint8_t *)bits->bits + bits->rowstride * 4 * y2;
1.991 + row2 += bpp / 8 * x1;
1.992 +
1.993 + mask2 = PIXMAN_FORMAT_A (format)? 0 : 0xff000000;
1.994 + }
1.995 +
1.996 + if (x2 == 0)
1.997 + {
1.998 + tl = 0;
1.999 + bl = 0;
1.1000 + }
1.1001 + else
1.1002 + {
1.1003 + tl = convert_pixel (row1, 0) | mask1;
1.1004 + bl = convert_pixel (row2, 0) | mask2;
1.1005 + }
1.1006 +
1.1007 + if (x1 == width - 1)
1.1008 + {
1.1009 + tr = 0;
1.1010 + br = 0;
1.1011 + }
1.1012 + else
1.1013 + {
1.1014 + tr = convert_pixel (row1, 1) | mask1;
1.1015 + br = convert_pixel (row2, 1) | mask2;
1.1016 + }
1.1017 + }
1.1018 +
1.1019 + buffer[i] = bilinear_interpolation (
1.1020 + tl, tr, bl, br, distx, disty);
1.1021 +
1.1022 + next:
1.1023 + x += ux;
1.1024 + y += uy;
1.1025 + }
1.1026 +}
1.1027 +
1.1028 +static force_inline void
1.1029 +bits_image_fetch_nearest_affine (pixman_image_t * image,
1.1030 + int offset,
1.1031 + int line,
1.1032 + int width,
1.1033 + uint32_t * buffer,
1.1034 + const uint32_t * mask,
1.1035 +
1.1036 + convert_pixel_t convert_pixel,
1.1037 + pixman_format_code_t format,
1.1038 + pixman_repeat_t repeat_mode)
1.1039 +{
1.1040 + pixman_fixed_t x, y;
1.1041 + pixman_fixed_t ux, uy;
1.1042 + pixman_vector_t v;
1.1043 + bits_image_t *bits = &image->bits;
1.1044 + int i;
1.1045 +
1.1046 + /* reference point is the center of the pixel */
1.1047 + v.vector[0] = pixman_int_to_fixed (offset) + pixman_fixed_1 / 2;
1.1048 + v.vector[1] = pixman_int_to_fixed (line) + pixman_fixed_1 / 2;
1.1049 + v.vector[2] = pixman_fixed_1;
1.1050 +
1.1051 + if (!pixman_transform_point_3d (image->common.transform, &v))
1.1052 + return;
1.1053 +
1.1054 + ux = image->common.transform->matrix[0][0];
1.1055 + uy = image->common.transform->matrix[1][0];
1.1056 +
1.1057 + x = v.vector[0];
1.1058 + y = v.vector[1];
1.1059 +
1.1060 + for (i = 0; i < width; ++i)
1.1061 + {
1.1062 + int width, height, x0, y0;
1.1063 + const uint8_t *row;
1.1064 +
1.1065 + if (mask && !mask[i])
1.1066 + goto next;
1.1067 +
1.1068 + width = image->bits.width;
1.1069 + height = image->bits.height;
1.1070 + x0 = pixman_fixed_to_int (x - pixman_fixed_e);
1.1071 + y0 = pixman_fixed_to_int (y - pixman_fixed_e);
1.1072 +
1.1073 + if (repeat_mode == PIXMAN_REPEAT_NONE &&
1.1074 + (y0 < 0 || y0 >= height || x0 < 0 || x0 >= width))
1.1075 + {
1.1076 + buffer[i] = 0;
1.1077 + }
1.1078 + else
1.1079 + {
1.1080 + uint32_t mask = PIXMAN_FORMAT_A (format)? 0 : 0xff000000;
1.1081 +
1.1082 + if (repeat_mode != PIXMAN_REPEAT_NONE)
1.1083 + {
1.1084 + repeat (repeat_mode, &x0, width);
1.1085 + repeat (repeat_mode, &y0, height);
1.1086 + }
1.1087 +
1.1088 + row = (uint8_t *)bits->bits + bits->rowstride * 4 * y0;
1.1089 +
1.1090 + buffer[i] = convert_pixel (row, x0) | mask;
1.1091 + }
1.1092 +
1.1093 + next:
1.1094 + x += ux;
1.1095 + y += uy;
1.1096 + }
1.1097 +}
1.1098 +
1.1099 +static force_inline uint32_t
1.1100 +convert_a8r8g8b8 (const uint8_t *row, int x)
1.1101 +{
1.1102 + return *(((uint32_t *)row) + x);
1.1103 +}
1.1104 +
1.1105 +static force_inline uint32_t
1.1106 +convert_x8r8g8b8 (const uint8_t *row, int x)
1.1107 +{
1.1108 + return *(((uint32_t *)row) + x);
1.1109 +}
1.1110 +
1.1111 +static force_inline uint32_t
1.1112 +convert_a8 (const uint8_t *row, int x)
1.1113 +{
1.1114 + return *(row + x) << 24;
1.1115 +}
1.1116 +
1.1117 +static force_inline uint32_t
1.1118 +convert_r5g6b5 (const uint8_t *row, int x)
1.1119 +{
1.1120 + return convert_0565_to_0888 (*((uint16_t *)row + x));
1.1121 +}
1.1122 +
1.1123 +#define MAKE_SEPARABLE_CONVOLUTION_FETCHER(name, format, repeat_mode) \
1.1124 + static uint32_t * \
1.1125 + bits_image_fetch_separable_convolution_affine_ ## name (pixman_iter_t *iter, \
1.1126 + const uint32_t * mask) \
1.1127 + { \
1.1128 + bits_image_fetch_separable_convolution_affine ( \
1.1129 + iter->image, \
1.1130 + iter->x, iter->y++, \
1.1131 + iter->width, \
1.1132 + iter->buffer, mask, \
1.1133 + convert_ ## format, \
1.1134 + PIXMAN_ ## format, \
1.1135 + repeat_mode); \
1.1136 + \
1.1137 + return iter->buffer; \
1.1138 + }
1.1139 +
1.1140 +#define MAKE_BILINEAR_FETCHER(name, format, repeat_mode) \
1.1141 + static uint32_t * \
1.1142 + bits_image_fetch_bilinear_affine_ ## name (pixman_iter_t *iter, \
1.1143 + const uint32_t * mask) \
1.1144 + { \
1.1145 + bits_image_fetch_bilinear_affine (iter->image, \
1.1146 + iter->x, iter->y++, \
1.1147 + iter->width, \
1.1148 + iter->buffer, mask, \
1.1149 + convert_ ## format, \
1.1150 + PIXMAN_ ## format, \
1.1151 + repeat_mode); \
1.1152 + return iter->buffer; \
1.1153 + }
1.1154 +
1.1155 +#define MAKE_NEAREST_FETCHER(name, format, repeat_mode) \
1.1156 + static uint32_t * \
1.1157 + bits_image_fetch_nearest_affine_ ## name (pixman_iter_t *iter, \
1.1158 + const uint32_t * mask) \
1.1159 + { \
1.1160 + bits_image_fetch_nearest_affine (iter->image, \
1.1161 + iter->x, iter->y++, \
1.1162 + iter->width, \
1.1163 + iter->buffer, mask, \
1.1164 + convert_ ## format, \
1.1165 + PIXMAN_ ## format, \
1.1166 + repeat_mode); \
1.1167 + return iter->buffer; \
1.1168 + }
1.1169 +
1.1170 +#define MAKE_FETCHERS(name, format, repeat_mode) \
1.1171 + MAKE_NEAREST_FETCHER (name, format, repeat_mode) \
1.1172 + MAKE_BILINEAR_FETCHER (name, format, repeat_mode) \
1.1173 + MAKE_SEPARABLE_CONVOLUTION_FETCHER (name, format, repeat_mode)
1.1174 +
1.1175 +MAKE_FETCHERS (pad_a8r8g8b8, a8r8g8b8, PIXMAN_REPEAT_PAD)
1.1176 +MAKE_FETCHERS (none_a8r8g8b8, a8r8g8b8, PIXMAN_REPEAT_NONE)
1.1177 +MAKE_FETCHERS (reflect_a8r8g8b8, a8r8g8b8, PIXMAN_REPEAT_REFLECT)
1.1178 +MAKE_FETCHERS (normal_a8r8g8b8, a8r8g8b8, PIXMAN_REPEAT_NORMAL)
1.1179 +MAKE_FETCHERS (pad_x8r8g8b8, x8r8g8b8, PIXMAN_REPEAT_PAD)
1.1180 +MAKE_FETCHERS (none_x8r8g8b8, x8r8g8b8, PIXMAN_REPEAT_NONE)
1.1181 +MAKE_FETCHERS (reflect_x8r8g8b8, x8r8g8b8, PIXMAN_REPEAT_REFLECT)
1.1182 +MAKE_FETCHERS (normal_x8r8g8b8, x8r8g8b8, PIXMAN_REPEAT_NORMAL)
1.1183 +MAKE_FETCHERS (pad_a8, a8, PIXMAN_REPEAT_PAD)
1.1184 +MAKE_FETCHERS (none_a8, a8, PIXMAN_REPEAT_NONE)
1.1185 +MAKE_FETCHERS (reflect_a8, a8, PIXMAN_REPEAT_REFLECT)
1.1186 +MAKE_FETCHERS (normal_a8, a8, PIXMAN_REPEAT_NORMAL)
1.1187 +MAKE_FETCHERS (pad_r5g6b5, r5g6b5, PIXMAN_REPEAT_PAD)
1.1188 +MAKE_FETCHERS (none_r5g6b5, r5g6b5, PIXMAN_REPEAT_NONE)
1.1189 +MAKE_FETCHERS (reflect_r5g6b5, r5g6b5, PIXMAN_REPEAT_REFLECT)
1.1190 +MAKE_FETCHERS (normal_r5g6b5, r5g6b5, PIXMAN_REPEAT_NORMAL)
1.1191 +
1.1192 +static void
1.1193 +replicate_pixel_32 (bits_image_t * bits,
1.1194 + int x,
1.1195 + int y,
1.1196 + int width,
1.1197 + uint32_t * buffer)
1.1198 +{
1.1199 + uint32_t color;
1.1200 + uint32_t *end;
1.1201 +
1.1202 + color = bits->fetch_pixel_32 (bits, x, y);
1.1203 +
1.1204 + end = buffer + width;
1.1205 + while (buffer < end)
1.1206 + *(buffer++) = color;
1.1207 +}
1.1208 +
1.1209 +static void
1.1210 +replicate_pixel_float (bits_image_t * bits,
1.1211 + int x,
1.1212 + int y,
1.1213 + int width,
1.1214 + uint32_t * b)
1.1215 +{
1.1216 + argb_t color;
1.1217 + argb_t *buffer = (argb_t *)b;
1.1218 + argb_t *end;
1.1219 +
1.1220 + color = bits->fetch_pixel_float (bits, x, y);
1.1221 +
1.1222 + end = buffer + width;
1.1223 + while (buffer < end)
1.1224 + *(buffer++) = color;
1.1225 +}
1.1226 +
1.1227 +static void
1.1228 +bits_image_fetch_untransformed_repeat_none (bits_image_t *image,
1.1229 + pixman_bool_t wide,
1.1230 + int x,
1.1231 + int y,
1.1232 + int width,
1.1233 + uint32_t * buffer)
1.1234 +{
1.1235 + uint32_t w;
1.1236 +
1.1237 + if (y < 0 || y >= image->height)
1.1238 + {
1.1239 + memset (buffer, 0, width * (wide? sizeof (argb_t) : 4));
1.1240 + return;
1.1241 + }
1.1242 +
1.1243 + if (x < 0)
1.1244 + {
1.1245 + w = MIN (width, -x);
1.1246 +
1.1247 + memset (buffer, 0, w * (wide ? sizeof (argb_t) : 4));
1.1248 +
1.1249 + width -= w;
1.1250 + buffer += w * (wide? 4 : 1);
1.1251 + x += w;
1.1252 + }
1.1253 +
1.1254 + if (x < image->width)
1.1255 + {
1.1256 + w = MIN (width, image->width - x);
1.1257 +
1.1258 + if (wide)
1.1259 + image->fetch_scanline_float ((pixman_image_t *)image, x, y, w, buffer, NULL);
1.1260 + else
1.1261 + image->fetch_scanline_32 ((pixman_image_t *)image, x, y, w, buffer, NULL);
1.1262 +
1.1263 + width -= w;
1.1264 + buffer += w * (wide? 4 : 1);
1.1265 + x += w;
1.1266 + }
1.1267 +
1.1268 + memset (buffer, 0, width * (wide ? sizeof (argb_t) : 4));
1.1269 +}
1.1270 +
1.1271 +static void
1.1272 +bits_image_fetch_untransformed_repeat_normal (bits_image_t *image,
1.1273 + pixman_bool_t wide,
1.1274 + int x,
1.1275 + int y,
1.1276 + int width,
1.1277 + uint32_t * buffer)
1.1278 +{
1.1279 + uint32_t w;
1.1280 +
1.1281 + while (y < 0)
1.1282 + y += image->height;
1.1283 +
1.1284 + while (y >= image->height)
1.1285 + y -= image->height;
1.1286 +
1.1287 + if (image->width == 1)
1.1288 + {
1.1289 + if (wide)
1.1290 + replicate_pixel_float (image, 0, y, width, buffer);
1.1291 + else
1.1292 + replicate_pixel_32 (image, 0, y, width, buffer);
1.1293 +
1.1294 + return;
1.1295 + }
1.1296 +
1.1297 + while (width)
1.1298 + {
1.1299 + while (x < 0)
1.1300 + x += image->width;
1.1301 + while (x >= image->width)
1.1302 + x -= image->width;
1.1303 +
1.1304 + w = MIN (width, image->width - x);
1.1305 +
1.1306 + if (wide)
1.1307 + image->fetch_scanline_float ((pixman_image_t *)image, x, y, w, buffer, NULL);
1.1308 + else
1.1309 + image->fetch_scanline_32 ((pixman_image_t *)image, x, y, w, buffer, NULL);
1.1310 +
1.1311 + buffer += w * (wide? 4 : 1);
1.1312 + x += w;
1.1313 + width -= w;
1.1314 + }
1.1315 +}
1.1316 +
1.1317 +static uint32_t *
1.1318 +bits_image_fetch_untransformed_32 (pixman_iter_t * iter,
1.1319 + const uint32_t *mask)
1.1320 +{
1.1321 + pixman_image_t *image = iter->image;
1.1322 + int x = iter->x;
1.1323 + int y = iter->y;
1.1324 + int width = iter->width;
1.1325 + uint32_t * buffer = iter->buffer;
1.1326 +
1.1327 + if (image->common.repeat == PIXMAN_REPEAT_NONE)
1.1328 + {
1.1329 + bits_image_fetch_untransformed_repeat_none (
1.1330 + &image->bits, FALSE, x, y, width, buffer);
1.1331 + }
1.1332 + else
1.1333 + {
1.1334 + bits_image_fetch_untransformed_repeat_normal (
1.1335 + &image->bits, FALSE, x, y, width, buffer);
1.1336 + }
1.1337 +
1.1338 + iter->y++;
1.1339 + return buffer;
1.1340 +}
1.1341 +
1.1342 +static uint32_t *
1.1343 +bits_image_fetch_untransformed_float (pixman_iter_t * iter,
1.1344 + const uint32_t *mask)
1.1345 +{
1.1346 + pixman_image_t *image = iter->image;
1.1347 + int x = iter->x;
1.1348 + int y = iter->y;
1.1349 + int width = iter->width;
1.1350 + uint32_t * buffer = iter->buffer;
1.1351 +
1.1352 + if (image->common.repeat == PIXMAN_REPEAT_NONE)
1.1353 + {
1.1354 + bits_image_fetch_untransformed_repeat_none (
1.1355 + &image->bits, TRUE, x, y, width, buffer);
1.1356 + }
1.1357 + else
1.1358 + {
1.1359 + bits_image_fetch_untransformed_repeat_normal (
1.1360 + &image->bits, TRUE, x, y, width, buffer);
1.1361 + }
1.1362 +
1.1363 + iter->y++;
1.1364 + return buffer;
1.1365 +}
1.1366 +
1.1367 +typedef struct
1.1368 +{
1.1369 + pixman_format_code_t format;
1.1370 + uint32_t flags;
1.1371 + pixman_iter_get_scanline_t get_scanline_32;
1.1372 + pixman_iter_get_scanline_t get_scanline_float;
1.1373 +} fetcher_info_t;
1.1374 +
1.1375 +static const fetcher_info_t fetcher_info[] =
1.1376 +{
1.1377 + { PIXMAN_any,
1.1378 + (FAST_PATH_NO_ALPHA_MAP |
1.1379 + FAST_PATH_ID_TRANSFORM |
1.1380 + FAST_PATH_NO_CONVOLUTION_FILTER |
1.1381 + FAST_PATH_NO_PAD_REPEAT |
1.1382 + FAST_PATH_NO_REFLECT_REPEAT),
1.1383 + bits_image_fetch_untransformed_32,
1.1384 + bits_image_fetch_untransformed_float
1.1385 + },
1.1386 +
1.1387 +#define FAST_BILINEAR_FLAGS \
1.1388 + (FAST_PATH_NO_ALPHA_MAP | \
1.1389 + FAST_PATH_NO_ACCESSORS | \
1.1390 + FAST_PATH_HAS_TRANSFORM | \
1.1391 + FAST_PATH_AFFINE_TRANSFORM | \
1.1392 + FAST_PATH_X_UNIT_POSITIVE | \
1.1393 + FAST_PATH_Y_UNIT_ZERO | \
1.1394 + FAST_PATH_NONE_REPEAT | \
1.1395 + FAST_PATH_BILINEAR_FILTER)
1.1396 +
1.1397 + { PIXMAN_a8r8g8b8,
1.1398 + FAST_BILINEAR_FLAGS,
1.1399 + bits_image_fetch_bilinear_no_repeat_8888,
1.1400 + _pixman_image_get_scanline_generic_float
1.1401 + },
1.1402 +
1.1403 + { PIXMAN_x8r8g8b8,
1.1404 + FAST_BILINEAR_FLAGS,
1.1405 + bits_image_fetch_bilinear_no_repeat_8888,
1.1406 + _pixman_image_get_scanline_generic_float
1.1407 + },
1.1408 +
1.1409 +#define GENERAL_BILINEAR_FLAGS \
1.1410 + (FAST_PATH_NO_ALPHA_MAP | \
1.1411 + FAST_PATH_NO_ACCESSORS | \
1.1412 + FAST_PATH_HAS_TRANSFORM | \
1.1413 + FAST_PATH_AFFINE_TRANSFORM | \
1.1414 + FAST_PATH_BILINEAR_FILTER)
1.1415 +
1.1416 +#define GENERAL_NEAREST_FLAGS \
1.1417 + (FAST_PATH_NO_ALPHA_MAP | \
1.1418 + FAST_PATH_NO_ACCESSORS | \
1.1419 + FAST_PATH_HAS_TRANSFORM | \
1.1420 + FAST_PATH_AFFINE_TRANSFORM | \
1.1421 + FAST_PATH_NEAREST_FILTER)
1.1422 +
1.1423 +#define GENERAL_SEPARABLE_CONVOLUTION_FLAGS \
1.1424 + (FAST_PATH_NO_ALPHA_MAP | \
1.1425 + FAST_PATH_NO_ACCESSORS | \
1.1426 + FAST_PATH_HAS_TRANSFORM | \
1.1427 + FAST_PATH_AFFINE_TRANSFORM | \
1.1428 + FAST_PATH_SEPARABLE_CONVOLUTION_FILTER)
1.1429 +
1.1430 +#define SEPARABLE_CONVOLUTION_AFFINE_FAST_PATH(name, format, repeat) \
1.1431 + { PIXMAN_ ## format, \
1.1432 + GENERAL_SEPARABLE_CONVOLUTION_FLAGS | FAST_PATH_ ## repeat ## _REPEAT, \
1.1433 + bits_image_fetch_separable_convolution_affine_ ## name, \
1.1434 + _pixman_image_get_scanline_generic_float \
1.1435 + },
1.1436 +
1.1437 +#define BILINEAR_AFFINE_FAST_PATH(name, format, repeat) \
1.1438 + { PIXMAN_ ## format, \
1.1439 + GENERAL_BILINEAR_FLAGS | FAST_PATH_ ## repeat ## _REPEAT, \
1.1440 + bits_image_fetch_bilinear_affine_ ## name, \
1.1441 + _pixman_image_get_scanline_generic_float \
1.1442 + },
1.1443 +
1.1444 +#define NEAREST_AFFINE_FAST_PATH(name, format, repeat) \
1.1445 + { PIXMAN_ ## format, \
1.1446 + GENERAL_NEAREST_FLAGS | FAST_PATH_ ## repeat ## _REPEAT, \
1.1447 + bits_image_fetch_nearest_affine_ ## name, \
1.1448 + _pixman_image_get_scanline_generic_float \
1.1449 + },
1.1450 +
1.1451 +#define AFFINE_FAST_PATHS(name, format, repeat) \
1.1452 + SEPARABLE_CONVOLUTION_AFFINE_FAST_PATH(name, format, repeat) \
1.1453 + BILINEAR_AFFINE_FAST_PATH(name, format, repeat) \
1.1454 + NEAREST_AFFINE_FAST_PATH(name, format, repeat)
1.1455 +
1.1456 + AFFINE_FAST_PATHS (pad_a8r8g8b8, a8r8g8b8, PAD)
1.1457 + AFFINE_FAST_PATHS (none_a8r8g8b8, a8r8g8b8, NONE)
1.1458 + AFFINE_FAST_PATHS (reflect_a8r8g8b8, a8r8g8b8, REFLECT)
1.1459 + AFFINE_FAST_PATHS (normal_a8r8g8b8, a8r8g8b8, NORMAL)
1.1460 + AFFINE_FAST_PATHS (pad_x8r8g8b8, x8r8g8b8, PAD)
1.1461 + AFFINE_FAST_PATHS (none_x8r8g8b8, x8r8g8b8, NONE)
1.1462 + AFFINE_FAST_PATHS (reflect_x8r8g8b8, x8r8g8b8, REFLECT)
1.1463 + AFFINE_FAST_PATHS (normal_x8r8g8b8, x8r8g8b8, NORMAL)
1.1464 + AFFINE_FAST_PATHS (pad_a8, a8, PAD)
1.1465 + AFFINE_FAST_PATHS (none_a8, a8, NONE)
1.1466 + AFFINE_FAST_PATHS (reflect_a8, a8, REFLECT)
1.1467 + AFFINE_FAST_PATHS (normal_a8, a8, NORMAL)
1.1468 + AFFINE_FAST_PATHS (pad_r5g6b5, r5g6b5, PAD)
1.1469 + AFFINE_FAST_PATHS (none_r5g6b5, r5g6b5, NONE)
1.1470 + AFFINE_FAST_PATHS (reflect_r5g6b5, r5g6b5, REFLECT)
1.1471 + AFFINE_FAST_PATHS (normal_r5g6b5, r5g6b5, NORMAL)
1.1472 +
1.1473 + /* Affine, no alpha */
1.1474 + { PIXMAN_any,
1.1475 + (FAST_PATH_NO_ALPHA_MAP | FAST_PATH_HAS_TRANSFORM | FAST_PATH_AFFINE_TRANSFORM),
1.1476 + bits_image_fetch_affine_no_alpha,
1.1477 + _pixman_image_get_scanline_generic_float
1.1478 + },
1.1479 +
1.1480 + /* General */
1.1481 + { PIXMAN_any,
1.1482 + 0,
1.1483 + bits_image_fetch_general,
1.1484 + _pixman_image_get_scanline_generic_float
1.1485 + },
1.1486 +
1.1487 + { PIXMAN_null },
1.1488 +};
1.1489 +
1.1490 +static void
1.1491 +bits_image_property_changed (pixman_image_t *image)
1.1492 +{
1.1493 + _pixman_bits_image_setup_accessors (&image->bits);
1.1494 +}
1.1495 +
1.1496 +void
1.1497 +_pixman_bits_image_src_iter_init (pixman_image_t *image, pixman_iter_t *iter)
1.1498 +{
1.1499 + pixman_format_code_t format = image->common.extended_format_code;
1.1500 + uint32_t flags = image->common.flags;
1.1501 + const fetcher_info_t *info;
1.1502 +
1.1503 + for (info = fetcher_info; info->format != PIXMAN_null; ++info)
1.1504 + {
1.1505 + if ((info->format == format || info->format == PIXMAN_any) &&
1.1506 + (info->flags & flags) == info->flags)
1.1507 + {
1.1508 + if (iter->iter_flags & ITER_NARROW)
1.1509 + {
1.1510 + iter->get_scanline = info->get_scanline_32;
1.1511 + }
1.1512 + else
1.1513 + {
1.1514 + iter->data = info->get_scanline_32;
1.1515 + iter->get_scanline = info->get_scanline_float;
1.1516 + }
1.1517 + return;
1.1518 + }
1.1519 + }
1.1520 +
1.1521 + /* Just in case we somehow didn't find a scanline function */
1.1522 + iter->get_scanline = _pixman_iter_get_scanline_noop;
1.1523 +}
1.1524 +
1.1525 +static uint32_t *
1.1526 +dest_get_scanline_16 (pixman_iter_t *iter, const uint32_t *mask)
1.1527 +{
1.1528 + pixman_image_t *image = iter->image;
1.1529 + int x = iter->x;
1.1530 + int y = iter->y;
1.1531 + int width = iter->width;
1.1532 + uint32_t * buffer = iter->buffer;
1.1533 +
1.1534 + image->bits.fetch_scanline_16 (image, x, y, width, buffer, mask);
1.1535 +
1.1536 + return iter->buffer;
1.1537 +}
1.1538 +
1.1539 +static uint32_t *
1.1540 +dest_get_scanline_narrow (pixman_iter_t *iter, const uint32_t *mask)
1.1541 +{
1.1542 + pixman_image_t *image = iter->image;
1.1543 + int x = iter->x;
1.1544 + int y = iter->y;
1.1545 + int width = iter->width;
1.1546 + uint32_t * buffer = iter->buffer;
1.1547 +
1.1548 + image->bits.fetch_scanline_32 (image, x, y, width, buffer, mask);
1.1549 + if (image->common.alpha_map)
1.1550 + {
1.1551 + uint32_t *alpha;
1.1552 +
1.1553 + if ((alpha = malloc (width * sizeof (uint32_t))))
1.1554 + {
1.1555 + int i;
1.1556 +
1.1557 + x -= image->common.alpha_origin_x;
1.1558 + y -= image->common.alpha_origin_y;
1.1559 +
1.1560 + image->common.alpha_map->fetch_scanline_32 (
1.1561 + (pixman_image_t *)image->common.alpha_map,
1.1562 + x, y, width, alpha, mask);
1.1563 +
1.1564 + for (i = 0; i < width; ++i)
1.1565 + {
1.1566 + buffer[i] &= ~0xff000000;
1.1567 + buffer[i] |= (alpha[i] & 0xff000000);
1.1568 + }
1.1569 +
1.1570 + free (alpha);
1.1571 + }
1.1572 + }
1.1573 +
1.1574 + return iter->buffer;
1.1575 +}
1.1576 +
1.1577 +static uint32_t *
1.1578 +dest_get_scanline_wide (pixman_iter_t *iter, const uint32_t *mask)
1.1579 +{
1.1580 + bits_image_t * image = &iter->image->bits;
1.1581 + int x = iter->x;
1.1582 + int y = iter->y;
1.1583 + int width = iter->width;
1.1584 + argb_t * buffer = (argb_t *)iter->buffer;
1.1585 +
1.1586 + image->fetch_scanline_float (
1.1587 + (pixman_image_t *)image, x, y, width, (uint32_t *)buffer, mask);
1.1588 + if (image->common.alpha_map)
1.1589 + {
1.1590 + argb_t *alpha;
1.1591 +
1.1592 + if ((alpha = malloc (width * sizeof (argb_t))))
1.1593 + {
1.1594 + int i;
1.1595 +
1.1596 + x -= image->common.alpha_origin_x;
1.1597 + y -= image->common.alpha_origin_y;
1.1598 +
1.1599 + image->common.alpha_map->fetch_scanline_float (
1.1600 + (pixman_image_t *)image->common.alpha_map,
1.1601 + x, y, width, (uint32_t *)alpha, mask);
1.1602 +
1.1603 + for (i = 0; i < width; ++i)
1.1604 + buffer[i].a = alpha[i].a;
1.1605 +
1.1606 + free (alpha);
1.1607 + }
1.1608 + }
1.1609 +
1.1610 + return iter->buffer;
1.1611 +}
1.1612 +
1.1613 +static void
1.1614 +dest_write_back_16 (pixman_iter_t *iter)
1.1615 +{
1.1616 + bits_image_t * image = &iter->image->bits;
1.1617 + int x = iter->x;
1.1618 + int y = iter->y;
1.1619 + int width = iter->width;
1.1620 + const uint32_t *buffer = iter->buffer;
1.1621 +
1.1622 + image->store_scanline_16 (image, x, y, width, buffer);
1.1623 +
1.1624 + iter->y++;
1.1625 +}
1.1626 +
1.1627 +static void
1.1628 +dest_write_back_narrow (pixman_iter_t *iter)
1.1629 +{
1.1630 + bits_image_t * image = &iter->image->bits;
1.1631 + int x = iter->x;
1.1632 + int y = iter->y;
1.1633 + int width = iter->width;
1.1634 + const uint32_t *buffer = iter->buffer;
1.1635 +
1.1636 + image->store_scanline_32 (image, x, y, width, buffer);
1.1637 +
1.1638 + if (image->common.alpha_map)
1.1639 + {
1.1640 + x -= image->common.alpha_origin_x;
1.1641 + y -= image->common.alpha_origin_y;
1.1642 +
1.1643 + image->common.alpha_map->store_scanline_32 (
1.1644 + image->common.alpha_map, x, y, width, buffer);
1.1645 + }
1.1646 +
1.1647 + iter->y++;
1.1648 +}
1.1649 +
1.1650 +static void
1.1651 +dest_write_back_wide (pixman_iter_t *iter)
1.1652 +{
1.1653 + bits_image_t * image = &iter->image->bits;
1.1654 + int x = iter->x;
1.1655 + int y = iter->y;
1.1656 + int width = iter->width;
1.1657 + const uint32_t *buffer = iter->buffer;
1.1658 +
1.1659 + image->store_scanline_float (image, x, y, width, buffer);
1.1660 +
1.1661 + if (image->common.alpha_map)
1.1662 + {
1.1663 + x -= image->common.alpha_origin_x;
1.1664 + y -= image->common.alpha_origin_y;
1.1665 +
1.1666 + image->common.alpha_map->store_scanline_float (
1.1667 + image->common.alpha_map, x, y, width, buffer);
1.1668 + }
1.1669 +
1.1670 + iter->y++;
1.1671 +}
1.1672 +
1.1673 +void
1.1674 +_pixman_bits_image_dest_iter_init (pixman_image_t *image, pixman_iter_t *iter)
1.1675 +{
1.1676 + if (iter->iter_flags & ITER_16)
1.1677 + {
1.1678 + if ((iter->iter_flags & (ITER_IGNORE_RGB | ITER_IGNORE_ALPHA)) ==
1.1679 + (ITER_IGNORE_RGB | ITER_IGNORE_ALPHA))
1.1680 + {
1.1681 + iter->get_scanline = _pixman_iter_get_scanline_noop;
1.1682 + }
1.1683 + else
1.1684 + {
1.1685 + iter->get_scanline = dest_get_scanline_16;
1.1686 + }
1.1687 + iter->write_back = dest_write_back_16;
1.1688 + }
1.1689 + else if (iter->iter_flags & ITER_NARROW)
1.1690 + {
1.1691 + if ((iter->iter_flags & (ITER_IGNORE_RGB | ITER_IGNORE_ALPHA)) ==
1.1692 + (ITER_IGNORE_RGB | ITER_IGNORE_ALPHA))
1.1693 + {
1.1694 + iter->get_scanline = _pixman_iter_get_scanline_noop;
1.1695 + }
1.1696 + else
1.1697 + {
1.1698 + iter->get_scanline = dest_get_scanline_narrow;
1.1699 + }
1.1700 +
1.1701 + iter->write_back = dest_write_back_narrow;
1.1702 + }
1.1703 + else
1.1704 + {
1.1705 + iter->get_scanline = dest_get_scanline_wide;
1.1706 + iter->write_back = dest_write_back_wide;
1.1707 + }
1.1708 +}
1.1709 +
1.1710 +static uint32_t *
1.1711 +create_bits (pixman_format_code_t format,
1.1712 + int width,
1.1713 + int height,
1.1714 + int * rowstride_bytes,
1.1715 + pixman_bool_t clear)
1.1716 +{
1.1717 + int stride;
1.1718 + size_t buf_size;
1.1719 + int bpp;
1.1720 +
1.1721 + /* what follows is a long-winded way, avoiding any possibility of integer
1.1722 + * overflows, of saying:
1.1723 + * stride = ((width * bpp + 0x1f) >> 5) * sizeof (uint32_t);
1.1724 + */
1.1725 +
1.1726 + bpp = PIXMAN_FORMAT_BPP (format);
1.1727 + if (_pixman_multiply_overflows_int (width, bpp))
1.1728 + return NULL;
1.1729 +
1.1730 + stride = width * bpp;
1.1731 + if (_pixman_addition_overflows_int (stride, 0x1f))
1.1732 + return NULL;
1.1733 +
1.1734 + stride += 0x1f;
1.1735 + stride >>= 5;
1.1736 +
1.1737 + stride *= sizeof (uint32_t);
1.1738 +
1.1739 + if (_pixman_multiply_overflows_size (height, stride))
1.1740 + return NULL;
1.1741 +
1.1742 + buf_size = height * stride;
1.1743 +
1.1744 + if (rowstride_bytes)
1.1745 + *rowstride_bytes = stride;
1.1746 +
1.1747 + if (clear)
1.1748 + return calloc (buf_size, 1);
1.1749 + else
1.1750 + return malloc (buf_size);
1.1751 +}
1.1752 +
1.1753 +pixman_bool_t
1.1754 +_pixman_bits_image_init (pixman_image_t * image,
1.1755 + pixman_format_code_t format,
1.1756 + int width,
1.1757 + int height,
1.1758 + uint32_t * bits,
1.1759 + int rowstride,
1.1760 + pixman_bool_t clear)
1.1761 +{
1.1762 + uint32_t *free_me = NULL;
1.1763 +
1.1764 + if (!bits && width && height)
1.1765 + {
1.1766 + int rowstride_bytes;
1.1767 +
1.1768 + free_me = bits = create_bits (format, width, height, &rowstride_bytes, clear);
1.1769 +
1.1770 + if (!bits)
1.1771 + return FALSE;
1.1772 +
1.1773 + rowstride = rowstride_bytes / (int) sizeof (uint32_t);
1.1774 + }
1.1775 +
1.1776 + _pixman_image_init (image);
1.1777 +
1.1778 + image->type = BITS;
1.1779 + image->bits.format = format;
1.1780 + image->bits.width = width;
1.1781 + image->bits.height = height;
1.1782 + image->bits.bits = bits;
1.1783 + image->bits.free_me = free_me;
1.1784 + image->bits.read_func = NULL;
1.1785 + image->bits.write_func = NULL;
1.1786 + image->bits.rowstride = rowstride;
1.1787 + image->bits.indexed = NULL;
1.1788 +
1.1789 + image->common.property_changed = bits_image_property_changed;
1.1790 +
1.1791 + _pixman_image_reset_clip_region (image);
1.1792 +
1.1793 + return TRUE;
1.1794 +}
1.1795 +
1.1796 +static pixman_image_t *
1.1797 +create_bits_image_internal (pixman_format_code_t format,
1.1798 + int width,
1.1799 + int height,
1.1800 + uint32_t * bits,
1.1801 + int rowstride_bytes,
1.1802 + pixman_bool_t clear)
1.1803 +{
1.1804 + pixman_image_t *image;
1.1805 +
1.1806 + /* must be a whole number of uint32_t's
1.1807 + */
1.1808 + return_val_if_fail (
1.1809 + bits == NULL || (rowstride_bytes % sizeof (uint32_t)) == 0, NULL);
1.1810 +
1.1811 + return_val_if_fail (PIXMAN_FORMAT_BPP (format) >= PIXMAN_FORMAT_DEPTH (format), NULL);
1.1812 +
1.1813 + image = _pixman_image_allocate ();
1.1814 +
1.1815 + if (!image)
1.1816 + return NULL;
1.1817 +
1.1818 + if (!_pixman_bits_image_init (image, format, width, height, bits,
1.1819 + rowstride_bytes / (int) sizeof (uint32_t),
1.1820 + clear))
1.1821 + {
1.1822 + free (image);
1.1823 + return NULL;
1.1824 + }
1.1825 +
1.1826 + return image;
1.1827 +}
1.1828 +
1.1829 +/* If bits is NULL, a buffer will be allocated and initialized to 0 */
1.1830 +PIXMAN_EXPORT pixman_image_t *
1.1831 +pixman_image_create_bits (pixman_format_code_t format,
1.1832 + int width,
1.1833 + int height,
1.1834 + uint32_t * bits,
1.1835 + int rowstride_bytes)
1.1836 +{
1.1837 + return create_bits_image_internal (
1.1838 + format, width, height, bits, rowstride_bytes, TRUE);
1.1839 +}
1.1840 +
1.1841 +
1.1842 +/* If bits is NULL, a buffer will be allocated and _not_ initialized */
1.1843 +PIXMAN_EXPORT pixman_image_t *
1.1844 +pixman_image_create_bits_no_clear (pixman_format_code_t format,
1.1845 + int width,
1.1846 + int height,
1.1847 + uint32_t * bits,
1.1848 + int rowstride_bytes)
1.1849 +{
1.1850 + return create_bits_image_internal (
1.1851 + format, width, height, bits, rowstride_bytes, FALSE);
1.1852 +}
