1 /* -*- Mode: c; c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t; -*- */
2 /*
3 * Copyright © 2011 Red Hat, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24 #ifdef HAVE_CONFIG_H
25 #include <config.h>
26 #endif
27 #include <string.h>
28 #include <stdlib.h>
29 #include "pixman-private.h"
30 #include "pixman-combine32.h"
31 #include "pixman-inlines.h"
32
33 static void
noop_composite(pixman_implementation_t * imp,pixman_composite_info_t * info)34 noop_composite (pixman_implementation_t *imp,
35 pixman_composite_info_t *info)
36 {
37 return;
38 }
39
40 static uint32_t *
noop_get_scanline(pixman_iter_t * iter,const uint32_t * mask)41 noop_get_scanline (pixman_iter_t *iter, const uint32_t *mask)
42 {
43 uint32_t *result = iter->buffer;
44
45 iter->buffer += iter->image->bits.rowstride;
46
47 return result;
48 }
49
50 static void
noop_init_solid_narrow(pixman_iter_t * iter,const pixman_iter_info_t * info)51 noop_init_solid_narrow (pixman_iter_t *iter,
52 const pixman_iter_info_t *info)
53 {
54 pixman_image_t *image = iter->image;
55 uint32_t *buffer = iter->buffer;
56 uint32_t *end = buffer + iter->width;
57 uint32_t color;
58
59 if (iter->image->type == SOLID)
60 color = image->solid.color_32;
61 else
62 color = image->bits.fetch_pixel_32 (&image->bits, 0, 0);
63
64 while (buffer < end)
65 *(buffer++) = color;
66 }
67
68 static void
noop_init_solid_wide(pixman_iter_t * iter,const pixman_iter_info_t * info)69 noop_init_solid_wide (pixman_iter_t *iter,
70 const pixman_iter_info_t *info)
71 {
72 pixman_image_t *image = iter->image;
73 argb_t *buffer = (argb_t *)iter->buffer;
74 argb_t *end = buffer + iter->width;
75 argb_t color;
76
77 if (iter->image->type == SOLID)
78 color = image->solid.color_float;
79 else
80 color = image->bits.fetch_pixel_float (&image->bits, 0, 0);
81
82 while (buffer < end)
83 *(buffer++) = color;
84 }
85
86 static void
noop_init_direct_buffer(pixman_iter_t * iter,const pixman_iter_info_t * info)87 noop_init_direct_buffer (pixman_iter_t *iter, const pixman_iter_info_t *info)
88 {
89 pixman_image_t *image = iter->image;
90
91 iter->buffer =
92 image->bits.bits + iter->y * image->bits.rowstride + iter->x;
93 }
94
95 static void
dest_write_back_direct(pixman_iter_t * iter)96 dest_write_back_direct (pixman_iter_t *iter)
97 {
98 iter->buffer += iter->image->bits.rowstride;
99 }
100
101 static const pixman_iter_info_t noop_iters[] =
102 {
103 /* Source iters */
104 { PIXMAN_any,
105 0, ITER_IGNORE_ALPHA | ITER_IGNORE_RGB | ITER_SRC,
106 NULL,
107 _pixman_iter_get_scanline_noop,
108 NULL
109 },
110 { PIXMAN_solid,
111 FAST_PATH_NO_ALPHA_MAP, ITER_NARROW | ITER_SRC,
112 noop_init_solid_narrow,
113 _pixman_iter_get_scanline_noop,
114 NULL,
115 },
116 { PIXMAN_solid,
117 FAST_PATH_NO_ALPHA_MAP, ITER_WIDE | ITER_SRC,
118 noop_init_solid_wide,
119 _pixman_iter_get_scanline_noop,
120 NULL
121 },
122 { PIXMAN_a8r8g8b8,
123 FAST_PATH_STANDARD_FLAGS | FAST_PATH_ID_TRANSFORM |
124 FAST_PATH_BITS_IMAGE | FAST_PATH_SAMPLES_COVER_CLIP_NEAREST,
125 ITER_NARROW | ITER_SRC,
126 noop_init_direct_buffer,
127 noop_get_scanline,
128 NULL
129 },
130 /* Dest iters */
131 { PIXMAN_a8r8g8b8,
132 FAST_PATH_STD_DEST_FLAGS, ITER_NARROW | ITER_DEST,
133 noop_init_direct_buffer,
134 _pixman_iter_get_scanline_noop,
135 dest_write_back_direct
136 },
137 { PIXMAN_x8r8g8b8,
138 FAST_PATH_STD_DEST_FLAGS, ITER_NARROW | ITER_DEST | ITER_LOCALIZED_ALPHA,
139 noop_init_direct_buffer,
140 _pixman_iter_get_scanline_noop,
141 dest_write_back_direct
142 },
143 { PIXMAN_null },
144 };
145
146 static const pixman_fast_path_t noop_fast_paths[] =
147 {
148 { PIXMAN_OP_DST, PIXMAN_any, 0, PIXMAN_any, 0, PIXMAN_any, 0, noop_composite },
149 { PIXMAN_OP_NONE },
150 };
151
152 pixman_implementation_t *
_pixman_implementation_create_noop(pixman_implementation_t * fallback)153 _pixman_implementation_create_noop (pixman_implementation_t *fallback)
154 {
155 pixman_implementation_t *imp =
156 _pixman_implementation_create (fallback, noop_fast_paths);
157
158 imp->iter_info = noop_iters;
159
160 return imp;
161 }
162