--- /dev/null
+/*
+ * Copyright © 2009 Red Hat, Inc.
+ * Copyright © 2000 SuSE, Inc.
+ * Copyright © 2007 Red Hat, Inc.
+ * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
+ * 2005 Lars Knoll & Zack Rusin, Trolltech
+ * 2008 Aaron Plattner, NVIDIA Corporation
+ *
+ * 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 Red Hat not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. Red Hat 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 <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "pixman-private.h"
+
+static void
+general_iter_init (pixman_iter_t *iter, const pixman_iter_info_t *info)
+{
+ pixman_image_t *image = iter->image;
+
+ switch (image->type)
+ {
+ case BITS:
+ if ((iter->iter_flags & ITER_SRC) == ITER_SRC)
+ _pixman_bits_image_src_iter_init (image, iter);
+ else
+ _pixman_bits_image_dest_iter_init (image, iter);
+ break;
+
+ case LINEAR:
+ _pixman_linear_gradient_iter_init (image, iter);
+ break;
+
+ case RADIAL:
+ _pixman_radial_gradient_iter_init (image, iter);
+ break;
+
+ case CONICAL:
+ _pixman_conical_gradient_iter_init (image, iter);
+ break;
+
+ case SOLID:
+ _pixman_log_error (FUNC, "Solid image not handled by noop");
+ break;
+
+ default:
+ _pixman_log_error (FUNC, "Pixman bug: unknown image type\n");
+ break;
+ }
+}
+
+static const pixman_iter_info_t general_iters[] =
+{
+ { PIXMAN_any, 0, 0, general_iter_init, NULL, NULL },
+ { PIXMAN_null },
+};
+
+typedef struct op_info_t op_info_t;
+struct op_info_t
+{
+ uint8_t src, dst;
+};
+
+#define ITER_IGNORE_BOTH \
+ (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB | ITER_LOCALIZED_ALPHA)
+
+static const op_info_t op_flags[PIXMAN_N_OPERATORS] =
+{
+ /* Src Dst */
+ { ITER_IGNORE_BOTH, ITER_IGNORE_BOTH }, /* CLEAR */
+ { ITER_LOCALIZED_ALPHA, ITER_IGNORE_BOTH }, /* SRC */
+ { ITER_IGNORE_BOTH, ITER_LOCALIZED_ALPHA }, /* DST */
+ { 0, ITER_LOCALIZED_ALPHA }, /* OVER */
+ { ITER_LOCALIZED_ALPHA, 0 }, /* OVER_REVERSE */
+ { ITER_LOCALIZED_ALPHA, ITER_IGNORE_RGB }, /* IN */
+ { ITER_IGNORE_RGB, ITER_LOCALIZED_ALPHA }, /* IN_REVERSE */
+ { ITER_LOCALIZED_ALPHA, ITER_IGNORE_RGB }, /* OUT */
+ { ITER_IGNORE_RGB, ITER_LOCALIZED_ALPHA }, /* OUT_REVERSE */
+ { 0, 0 }, /* ATOP */
+ { 0, 0 }, /* ATOP_REVERSE */
+ { 0, 0 }, /* XOR */
+ { ITER_LOCALIZED_ALPHA, ITER_LOCALIZED_ALPHA }, /* ADD */
+ { 0, 0 }, /* SATURATE */
+};
+
+#define SCANLINE_BUFFER_LENGTH 8192
+
+static void
+general_composite_rect (pixman_implementation_t *imp,
+ pixman_composite_info_t *info)
+{
+ PIXMAN_COMPOSITE_ARGS (info);
+ uint8_t stack_scanline_buffer[3 * SCANLINE_BUFFER_LENGTH];
+ uint8_t *scanline_buffer = (uint8_t *) stack_scanline_buffer;
+ uint8_t *src_buffer, *mask_buffer, *dest_buffer;
+ pixman_iter_t src_iter, mask_iter, dest_iter;
+ pixman_combine_32_func_t compose;
+ pixman_bool_t component_alpha;
+ iter_flags_t width_flag, src_iter_flags;
+ int Bpp;
+ int i;
+
+ if ((src_image->common.flags & FAST_PATH_NARROW_FORMAT) &&
+ (!mask_image || mask_image->common.flags & FAST_PATH_NARROW_FORMAT) &&
+ (dest_image->common.flags & FAST_PATH_NARROW_FORMAT))
+ {
+ width_flag = ITER_NARROW;
+ Bpp = 4;
+ }
+ else
+ {
+ width_flag = ITER_WIDE;
+ Bpp = 16;
+ }
+
+#define ALIGN(addr) \
+ ((uint8_t *)((((uintptr_t)(addr)) + 15) & (~15)))
+
+ src_buffer = ALIGN (scanline_buffer);
+ mask_buffer = ALIGN (src_buffer + width * Bpp);
+ dest_buffer = ALIGN (mask_buffer + width * Bpp);
+
+ if (ALIGN (dest_buffer + width * Bpp) >
+ scanline_buffer + sizeof (stack_scanline_buffer))
+ {
+ scanline_buffer = pixman_malloc_ab_plus_c (width, Bpp * 3, 32 * 3);
+
+ if (!scanline_buffer)
+ return;
+
+ src_buffer = ALIGN (scanline_buffer);
+ mask_buffer = ALIGN (src_buffer + width * Bpp);
+ dest_buffer = ALIGN (mask_buffer + width * Bpp);
+ }
+
+ if (width_flag == ITER_WIDE)
+ {
+ /* To make sure there aren't any NANs in the buffers */
+ memset (src_buffer, 0, width * Bpp);
+ memset (mask_buffer, 0, width * Bpp);
+ memset (dest_buffer, 0, width * Bpp);
+ }
+
+ /* src iter */
+ src_iter_flags = width_flag | op_flags[op].src | ITER_SRC;
+
+ _pixman_implementation_iter_init (imp->toplevel, &src_iter, src_image,
+ src_x, src_y, width, height,
+ src_buffer, src_iter_flags,
+ info->src_flags);
+
+ /* mask iter */
+ if ((src_iter_flags & (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB)) ==
+ (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB))
+ {
+ /* If it doesn't matter what the source is, then it doesn't matter
+ * what the mask is
+ */
+ mask_image = NULL;
+ }
+
+ component_alpha =
+ mask_image &&
+ mask_image->common.type == BITS &&
+ mask_image->common.component_alpha &&
+ PIXMAN_FORMAT_RGB (mask_image->bits.format);
+
+ _pixman_implementation_iter_init (
+ imp->toplevel, &mask_iter,
+ mask_image, mask_x, mask_y, width, height, mask_buffer,
+ ITER_SRC | width_flag | (component_alpha? 0 : ITER_IGNORE_RGB),
+ info->mask_flags);
+
+ /* dest iter */
+ _pixman_implementation_iter_init (
+ imp->toplevel, &dest_iter, dest_image, dest_x, dest_y, width, height,
+ dest_buffer, ITER_DEST | width_flag | op_flags[op].dst, info->dest_flags);
+
+ compose = _pixman_implementation_lookup_combiner (
+ imp->toplevel, op, component_alpha, width_flag != ITER_WIDE);
+
+ for (i = 0; i < height; ++i)
+ {
+ uint32_t *s, *m, *d;
+
+ m = mask_iter.get_scanline (&mask_iter, NULL);
+ s = src_iter.get_scanline (&src_iter, m);
+ d = dest_iter.get_scanline (&dest_iter, NULL);
+
+ compose (imp->toplevel, op, d, s, m, width);
+
+ dest_iter.write_back (&dest_iter);
+ }
+
+ if (src_iter.fini)
+ src_iter.fini (&src_iter);
+ if (mask_iter.fini)
+ mask_iter.fini (&mask_iter);
+ if (dest_iter.fini)
+ dest_iter.fini (&dest_iter);
+
+ if (scanline_buffer != (uint8_t *) stack_scanline_buffer)
+ free (scanline_buffer);
+}
+
+static const pixman_fast_path_t general_fast_path[] =
+{
+ { PIXMAN_OP_any, PIXMAN_any, 0, PIXMAN_any, 0, PIXMAN_any, 0, general_composite_rect },
+ { PIXMAN_OP_NONE }
+};
+
+pixman_implementation_t *
+_pixman_implementation_create_general (void)
+{
+ pixman_implementation_t *imp = _pixman_implementation_create (NULL, general_fast_path);
+
+ _pixman_setup_combiner_functions_32 (imp);
+ _pixman_setup_combiner_functions_float (imp);
+
+ imp->iter_info = general_iters;
+
+ return imp;
+}
+
Code Review / kvmfornfv.git / blobdiff