1/*
2 * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above
9 *    copyright notice, this list of conditions and the following
10 *    disclaimer.
11 * 2. Redistributions in binary form must reproduce the above
12 *    copyright notice, this list of conditions and the following
13 *    disclaimer in the documentation and/or other materials
14 *    provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
21 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
25 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
26 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include "config.h"
31
32#include "core/rendering/style/StyleCustomFilterProgramCache.h"
33
34#include "core/platform/graphics/filters/custom/CustomFilterProgramInfo.h"
35#include "core/rendering/style/StyleCustomFilterProgram.h"
36
37namespace WebCore {
38
39static CustomFilterProgramInfo programCacheKey(StyleCustomFilterProgram* program)
40{
41    ASSERT(program->vertexShaderURL().isValid() || program->fragmentShaderURL().isValid());
42    return CustomFilterProgramInfo(program->vertexShaderURL().string(), program->fragmentShaderURL().string(),
43        program->programType(), program->mixSettings(), program->meshType());
44}
45
46PassOwnPtr<StyleCustomFilterProgramCache> StyleCustomFilterProgramCache::create()
47{
48    return adoptPtr(new StyleCustomFilterProgramCache());
49}
50
51StyleCustomFilterProgramCache::~StyleCustomFilterProgramCache()
52{
53    // Make sure the programs are not calling back into this object.
54    for (CacheMap::iterator iter = m_cache.begin(), end = m_cache.end(); iter != end; ++iter)
55        iter->value->setCache(0);
56}
57
58StyleCustomFilterProgram* StyleCustomFilterProgramCache::lookup(const CustomFilterProgramInfo& programInfo) const
59{
60    CacheMap::const_iterator iter = m_cache.find(programInfo);
61    return iter != m_cache.end() ? iter->value : 0;
62}
63
64StyleCustomFilterProgram* StyleCustomFilterProgramCache::lookup(StyleCustomFilterProgram* program) const
65{
66    return lookup(programCacheKey(program));
67}
68
69void StyleCustomFilterProgramCache::add(StyleCustomFilterProgram* program)
70{
71    CustomFilterProgramInfo key = programCacheKey(program);
72    ASSERT(m_cache.find(key) == m_cache.end());
73    m_cache.set(key, program);
74    program->setCache(this);
75}
76
77void StyleCustomFilterProgramCache::remove(StyleCustomFilterProgram* program)
78{
79    CacheMap::iterator iter = m_cache.find(programCacheKey(program));
80    ASSERT(iter != m_cache.end());
81    m_cache.remove(iter);
82}
83
84
85} // namespace WebCore
86
87
88