1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5
6 #include "FrozenImage.h"
7
8 namespace mozilla {
9
10 using namespace gfx;
11 using layers::ImageContainer;
12 using layers::LayerManager;
13
14 namespace image {
15
IncrementAnimationConsumers()16 void FrozenImage::IncrementAnimationConsumers() {
17 // Do nothing. This will prevent animation from starting if there are no other
18 // instances of this image.
19 }
20
DecrementAnimationConsumers()21 void FrozenImage::DecrementAnimationConsumers() {
22 // Do nothing.
23 }
24
25 NS_IMETHODIMP
GetAnimated(bool * aAnimated)26 FrozenImage::GetAnimated(bool* aAnimated) {
27 bool dummy;
28 nsresult rv = InnerImage()->GetAnimated(&dummy);
29 if (NS_SUCCEEDED(rv)) {
30 *aAnimated = false;
31 }
32 return rv;
33 }
34
NS_IMETHODIMP_(already_AddRefed<SourceSurface>)35 NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
36 FrozenImage::GetFrame(uint32_t aWhichFrame, uint32_t aFlags) {
37 return InnerImage()->GetFrame(FRAME_FIRST, aFlags);
38 }
39
NS_IMETHODIMP_(already_AddRefed<SourceSurface>)40 NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
41 FrozenImage::GetFrameAtSize(const IntSize& aSize, uint32_t aWhichFrame,
42 uint32_t aFlags) {
43 return InnerImage()->GetFrameAtSize(aSize, FRAME_FIRST, aFlags);
44 }
45
IsNonAnimated() const46 bool FrozenImage::IsNonAnimated() const {
47 // We usually don't create frozen images for non-animated images, but it might
48 // happen if we don't have enough data at the time of the creation to
49 // determine whether the image is actually animated.
50 bool animated = false;
51 return NS_SUCCEEDED(InnerImage()->GetAnimated(&animated)) && !animated;
52 }
53
NS_IMETHODIMP_(bool)54 NS_IMETHODIMP_(bool)
55 FrozenImage::IsImageContainerAvailable(LayerManager* aManager,
56 uint32_t aFlags) {
57 if (IsNonAnimated()) {
58 return InnerImage()->IsImageContainerAvailable(aManager, aFlags);
59 }
60 return false;
61 }
62
NS_IMETHODIMP_(already_AddRefed<ImageContainer>)63 NS_IMETHODIMP_(already_AddRefed<ImageContainer>)
64 FrozenImage::GetImageContainer(layers::LayerManager* aManager,
65 uint32_t aFlags) {
66 if (IsNonAnimated()) {
67 return InnerImage()->GetImageContainer(aManager, aFlags);
68 }
69 // XXX(seth): GetImageContainer does not currently support anything but the
70 // current frame. We work around this by always returning null, but if it ever
71 // turns out that FrozenImage is widely used on codepaths that can actually
72 // benefit from GetImageContainer, it would be a good idea to fix that method
73 // for performance reasons.
74 return nullptr;
75 }
76
NS_IMETHODIMP_(bool)77 NS_IMETHODIMP_(bool)
78 FrozenImage::IsImageContainerAvailableAtSize(LayerManager* aManager,
79 const IntSize& aSize,
80 uint32_t aFlags) {
81 if (IsNonAnimated()) {
82 return InnerImage()->IsImageContainerAvailableAtSize(aManager, aSize,
83 aFlags);
84 }
85 return false;
86 }
87
NS_IMETHODIMP_(ImgDrawResult)88 NS_IMETHODIMP_(ImgDrawResult)
89 FrozenImage::GetImageContainerAtSize(layers::LayerManager* aManager,
90 const gfx::IntSize& aSize,
91 const Maybe<SVGImageContext>& aSVGContext,
92 const Maybe<ImageIntRegion>& aRegion,
93 uint32_t aFlags,
94 layers::ImageContainer** aOutContainer) {
95 if (IsNonAnimated()) {
96 return InnerImage()->GetImageContainerAtSize(
97 aManager, aSize, aSVGContext, aRegion, aFlags, aOutContainer);
98 }
99
100 // XXX(seth): GetImageContainer does not currently support anything but the
101 // current frame. We work around this by always returning null, but if it ever
102 // turns out that FrozenImage is widely used on codepaths that can actually
103 // benefit from GetImageContainer, it would be a good idea to fix that method
104 // for performance reasons.
105 return ImgDrawResult::NOT_SUPPORTED;
106 }
107
NS_IMETHODIMP_(ImgDrawResult)108 NS_IMETHODIMP_(ImgDrawResult)
109 FrozenImage::Draw(gfxContext* aContext, const nsIntSize& aSize,
110 const ImageRegion& aRegion,
111 uint32_t /* aWhichFrame - ignored */,
112 SamplingFilter aSamplingFilter,
113 const Maybe<SVGImageContext>& aSVGContext, uint32_t aFlags,
114 float aOpacity) {
115 return InnerImage()->Draw(aContext, aSize, aRegion, FRAME_FIRST,
116 aSamplingFilter, aSVGContext, aFlags, aOpacity);
117 }
118
119 NS_IMETHODIMP
StartDecoding(uint32_t aFlags,uint32_t aWhichFrame)120 FrozenImage::StartDecoding(uint32_t aFlags, uint32_t aWhichFrame) {
121 return InnerImage()->StartDecoding(aFlags, FRAME_FIRST);
122 }
123
StartDecodingWithResult(uint32_t aFlags,uint32_t aWhichFrame)124 bool FrozenImage::StartDecodingWithResult(uint32_t aFlags,
125 uint32_t aWhichFrame) {
126 return InnerImage()->StartDecodingWithResult(aFlags, FRAME_FIRST);
127 }
128
RequestDecodeWithResult(uint32_t aFlags,uint32_t aWhichFrame)129 imgIContainer::DecodeResult FrozenImage::RequestDecodeWithResult(
130 uint32_t aFlags, uint32_t aWhichFrame) {
131 return InnerImage()->RequestDecodeWithResult(aFlags, FRAME_FIRST);
132 }
133
134 NS_IMETHODIMP
RequestDecodeForSize(const nsIntSize & aSize,uint32_t aFlags,uint32_t aWhichFrame)135 FrozenImage::RequestDecodeForSize(const nsIntSize& aSize, uint32_t aFlags,
136 uint32_t aWhichFrame) {
137 return InnerImage()->RequestDecodeForSize(aSize, aFlags, FRAME_FIRST);
138 }
139
NS_IMETHODIMP_(void)140 NS_IMETHODIMP_(void)
141 FrozenImage::RequestRefresh(const TimeStamp& aTime) {
142 // Do nothing.
143 }
144
145 NS_IMETHODIMP
GetAnimationMode(uint16_t * aAnimationMode)146 FrozenImage::GetAnimationMode(uint16_t* aAnimationMode) {
147 *aAnimationMode = kNormalAnimMode;
148 return NS_OK;
149 }
150
151 NS_IMETHODIMP
SetAnimationMode(uint16_t aAnimationMode)152 FrozenImage::SetAnimationMode(uint16_t aAnimationMode) {
153 // Do nothing.
154 return NS_OK;
155 }
156
157 NS_IMETHODIMP
ResetAnimation()158 FrozenImage::ResetAnimation() {
159 // Do nothing.
160 return NS_OK;
161 }
162
NS_IMETHODIMP_(float)163 NS_IMETHODIMP_(float)
164 FrozenImage::GetFrameIndex(uint32_t aWhichFrame) {
165 MOZ_ASSERT(aWhichFrame <= FRAME_MAX_VALUE, "Invalid argument");
166 return 0;
167 }
168
169 } // namespace image
170 } // namespace mozilla
171