228 lines
7.2 KiB
C
228 lines
7.2 KiB
C
/*
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* Copyright © 2009 Red Hat, Inc.
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* Copyright © 2000 SuSE, Inc.
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* Copyright © 2007 Red Hat, Inc.
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* Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
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* 2005 Lars Knoll & Zack Rusin, Trolltech
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* 2008 Aaron Plattner, NVIDIA Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Red Hat not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. Red Hat makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "pixman-private.h"
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static pixman_bool_t
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general_src_iter_init (pixman_implementation_t *imp, pixman_iter_t *iter)
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{
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pixman_image_t *image = iter->image;
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if (image->type == LINEAR)
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_pixman_linear_gradient_iter_init (image, iter);
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else if (image->type == RADIAL)
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_pixman_radial_gradient_iter_init (image, iter);
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else if (image->type == CONICAL)
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_pixman_conical_gradient_iter_init (image, iter);
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else if (image->type == BITS)
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_pixman_bits_image_src_iter_init (image, iter);
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else if (image->type == SOLID)
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_pixman_log_error (FUNC, "Solid image not handled by noop");
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else
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_pixman_log_error (FUNC, "Pixman bug: unknown image type\n");
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return TRUE;
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}
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static pixman_bool_t
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general_dest_iter_init (pixman_implementation_t *imp, pixman_iter_t *iter)
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{
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if (iter->image->type == BITS)
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{
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_pixman_bits_image_dest_iter_init (iter->image, iter);
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return TRUE;
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}
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else
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{
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_pixman_log_error (FUNC, "Trying to write to a non-writable image");
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return FALSE;
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}
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}
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typedef struct op_info_t op_info_t;
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struct op_info_t
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{
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uint8_t src, dst;
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};
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#define ITER_IGNORE_BOTH \
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(ITER_IGNORE_ALPHA | ITER_IGNORE_RGB | ITER_LOCALIZED_ALPHA)
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static const op_info_t op_flags[PIXMAN_N_OPERATORS] =
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{
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/* Src Dst */
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{ ITER_IGNORE_BOTH, ITER_IGNORE_BOTH }, /* CLEAR */
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{ ITER_LOCALIZED_ALPHA, ITER_IGNORE_BOTH }, /* SRC */
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{ ITER_IGNORE_BOTH, ITER_LOCALIZED_ALPHA }, /* DST */
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{ 0, ITER_LOCALIZED_ALPHA }, /* OVER */
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{ ITER_LOCALIZED_ALPHA, 0 }, /* OVER_REVERSE */
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{ ITER_LOCALIZED_ALPHA, ITER_IGNORE_RGB }, /* IN */
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{ ITER_IGNORE_RGB, ITER_LOCALIZED_ALPHA }, /* IN_REVERSE */
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{ ITER_LOCALIZED_ALPHA, ITER_IGNORE_RGB }, /* OUT */
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{ ITER_IGNORE_RGB, ITER_LOCALIZED_ALPHA }, /* OUT_REVERSE */
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{ 0, 0 }, /* ATOP */
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{ 0, 0 }, /* ATOP_REVERSE */
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{ 0, 0 }, /* XOR */
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{ ITER_LOCALIZED_ALPHA, ITER_LOCALIZED_ALPHA }, /* ADD */
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{ 0, 0 }, /* SATURATE */
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};
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#define SCANLINE_BUFFER_LENGTH 8192
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static void
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general_composite_rect (pixman_implementation_t *imp,
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pixman_composite_info_t *info)
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{
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PIXMAN_COMPOSITE_ARGS (info);
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uint64_t stack_scanline_buffer[(SCANLINE_BUFFER_LENGTH * 3 + 7) / 8];
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uint8_t *scanline_buffer = (uint8_t *) stack_scanline_buffer;
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uint8_t *src_buffer, *mask_buffer, *dest_buffer;
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pixman_iter_t src_iter, mask_iter, dest_iter;
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pixman_combine_32_func_t compose;
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pixman_bool_t component_alpha;
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iter_flags_t narrow, src_iter_flags;
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int Bpp;
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int i;
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if ((src_image->common.flags & FAST_PATH_NARROW_FORMAT) &&
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(!mask_image || mask_image->common.flags & FAST_PATH_NARROW_FORMAT) &&
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(dest_image->common.flags & FAST_PATH_NARROW_FORMAT))
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{
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narrow = ITER_NARROW;
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Bpp = 4;
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}
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else
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{
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narrow = 0;
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Bpp = 16;
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}
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if (width * Bpp > SCANLINE_BUFFER_LENGTH)
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{
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scanline_buffer = pixman_malloc_abc (width, 3, Bpp);
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if (!scanline_buffer)
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return;
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}
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src_buffer = scanline_buffer;
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mask_buffer = src_buffer + width * Bpp;
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dest_buffer = mask_buffer + width * Bpp;
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if (!narrow)
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{
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/* To make sure there aren't any NANs in the buffers */
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memset (src_buffer, 0, width * Bpp);
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memset (mask_buffer, 0, width * Bpp);
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memset (dest_buffer, 0, width * Bpp);
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}
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/* src iter */
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src_iter_flags = narrow | op_flags[op].src;
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_pixman_implementation_src_iter_init (imp->toplevel, &src_iter, src_image,
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src_x, src_y, width, height,
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src_buffer, src_iter_flags, info->src_flags);
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/* mask iter */
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if ((src_iter_flags & (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB)) ==
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(ITER_IGNORE_ALPHA | ITER_IGNORE_RGB))
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{
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/* If it doesn't matter what the source is, then it doesn't matter
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* what the mask is
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*/
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mask_image = NULL;
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}
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component_alpha =
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mask_image &&
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mask_image->common.type == BITS &&
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mask_image->common.component_alpha &&
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PIXMAN_FORMAT_RGB (mask_image->bits.format);
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_pixman_implementation_src_iter_init (
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imp->toplevel, &mask_iter, mask_image, mask_x, mask_y, width, height,
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mask_buffer, narrow | (component_alpha? 0 : ITER_IGNORE_RGB), info->mask_flags);
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/* dest iter */
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_pixman_implementation_dest_iter_init (
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imp->toplevel, &dest_iter, dest_image, dest_x, dest_y, width, height,
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dest_buffer, narrow | op_flags[op].dst, info->dest_flags);
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compose = _pixman_implementation_lookup_combiner (
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imp->toplevel, op, component_alpha, narrow);
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for (i = 0; i < height; ++i)
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{
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uint32_t *s, *m, *d;
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m = mask_iter.get_scanline (&mask_iter, NULL);
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s = src_iter.get_scanline (&src_iter, m);
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d = dest_iter.get_scanline (&dest_iter, NULL);
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compose (imp->toplevel, op, d, s, m, width);
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dest_iter.write_back (&dest_iter);
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}
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if (scanline_buffer != (uint8_t *) stack_scanline_buffer)
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free (scanline_buffer);
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}
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static const pixman_fast_path_t general_fast_path[] =
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{
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{ PIXMAN_OP_any, PIXMAN_any, 0, PIXMAN_any, 0, PIXMAN_any, 0, general_composite_rect },
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{ PIXMAN_OP_NONE }
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};
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pixman_implementation_t *
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_pixman_implementation_create_general (void)
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{
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pixman_implementation_t *imp = _pixman_implementation_create (NULL, general_fast_path);
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_pixman_setup_combiner_functions_32 (imp);
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_pixman_setup_combiner_functions_float (imp);
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imp->src_iter_init = general_src_iter_init;
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imp->dest_iter_init = general_dest_iter_init;
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return imp;
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}
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