1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <sys/types.h>
#include <cstdint>
#include <list>
#include <gui/ISurfaceComposerClient.h>
#include <gui/LayerState.h>
#include <renderengine/Image.h>
#include <renderengine/Mesh.h>
#include <renderengine/Texture.h>
#include <system/window.h> // For NATIVE_WINDOW_SCALING_MODE_FREEZE
#include <ui/FrameStats.h>
#include <ui/GraphicBuffer.h>
#include <ui/PixelFormat.h>
#include <ui/Region.h>
#include <utils/RefBase.h>
#include <utils/String8.h>
#include <utils/Timers.h>
#include "BufferLayerConsumer.h"
#include "Client.h"
#include "DisplayHardware/HWComposer.h"
#include "FrameTimeline.h"
#include "FrameTracker.h"
#include "Layer.h"
#include "LayerVector.h"
#include "MonitoredProducer.h"
#include "SurfaceFlinger.h"
namespace android {
class BufferLayer : public Layer {
public:
explicit BufferLayer(const LayerCreationArgs& args);
virtual ~BufferLayer() override;
// Implements Layer.
sp<compositionengine::LayerFE> getCompositionEngineLayerFE() const override;
compositionengine::LayerFECompositionState* editCompositionState() override;
// If we have received a new buffer this frame, we will pass its surface
// damage down to hardware composer. Otherwise, we must send a region with
// one empty rect.
void useSurfaceDamage() override;
void useEmptyDamage() override;
bool isOpaque(const Layer::State& s) const override;
// isVisible - true if this layer is visible, false otherwise
bool isVisible() const override;
// isProtected - true if the layer may contain protected content in the
// GRALLOC_USAGE_PROTECTED sense.
bool isProtected() const override;
// isFixedSize - true if content has a fixed size
bool isFixedSize() const override;
bool usesSourceCrop() const override;
bool isHdrY410() const override;
bool onPostComposition(const DisplayDevice*, const std::shared_ptr<FenceTime>& glDoneFence,
const std::shared_ptr<FenceTime>& presentFence,
const CompositorTiming&) override;
// latchBuffer - called each time the screen is redrawn and returns whether
// the visible regions need to be recomputed (this is a fairly heavy
// operation, so this should be set only if needed). Typically this is used
// to figure out if the content or size of a surface has changed.
bool latchBuffer(bool& recomputeVisibleRegions, nsecs_t latchTime,
nsecs_t expectedPresentTime) override;
bool isBufferLatched() const override { return mRefreshPending; }
bool hasReadyFrame() const override;
// Returns the current scaling mode
uint32_t getEffectiveScalingMode() const override;
// Calls latchBuffer if the buffer has a frame queued and then releases the buffer.
// This is used if the buffer is just latched and releases to free up the buffer
// and will not be shown on screen.
// Should only be called on the main thread.
void latchAndReleaseBuffer() override;
bool getTransformToDisplayInverse() const override;
Rect getBufferCrop() const override;
uint32_t getBufferTransform() const override;
ui::Dataspace getDataSpace() const override;
sp<GraphicBuffer> getBuffer() const override;
ui::Transform::RotationFlags getTransformHint() const override { return mTransformHint; }
// Returns true if the transformed buffer size does not match the layer size and we need
// to apply filtering.
virtual bool bufferNeedsFiltering() const;
protected:
struct BufferInfo {
nsecs_t mDesiredPresentTime;
std::shared_ptr<FenceTime> mFenceTime;
sp<Fence> mFence;
uint32_t mTransform{0};
ui::Dataspace mDataspace{ui::Dataspace::UNKNOWN};
Rect mCrop;
uint32_t mScaleMode{NATIVE_WINDOW_SCALING_MODE_FREEZE};
Region mSurfaceDamage;
HdrMetadata mHdrMetadata;
int mApi;
PixelFormat mPixelFormat{PIXEL_FORMAT_NONE};
bool mTransformToDisplayInverse{false};
std::shared_ptr<renderengine::ExternalTexture> mBuffer;
uint64_t mFrameNumber;
int mBufferSlot{BufferQueue::INVALID_BUFFER_SLOT};
bool mFrameLatencyNeeded{false};
};
BufferInfo mBufferInfo;
virtual void gatherBufferInfo() = 0;
std::optional<compositionengine::LayerFE::LayerSettings> prepareClientComposition(
compositionengine::LayerFE::ClientCompositionTargetSettings&) override;
/*
* compositionengine::LayerFE overrides
*/
const compositionengine::LayerFECompositionState* getCompositionState() const override;
bool onPreComposition(nsecs_t) override;
void preparePerFrameCompositionState() override;
static bool getOpacityForFormat(uint32_t format);
// from graphics API
const uint32_t mTextureName;
bool mRefreshPending{false};
ui::Dataspace translateDataspace(ui::Dataspace dataspace);
void setInitialValuesForClone(const sp<Layer>& clonedFrom);
void updateCloneBufferInfo() override;
uint64_t mPreviousFrameNumber = 0;
uint64_t getHeadFrameNumber(nsecs_t expectedPresentTime) const override;
void setTransformHint(ui::Transform::RotationFlags displayTransformHint) override;
// Transform hint provided to the producer. This must be accessed holding
// the mStateLock.
ui::Transform::RotationFlags mTransformHint = ui::Transform::ROT_0;
bool getAutoRefresh() const { return mAutoRefresh; }
bool getSidebandStreamChanged() const { return mSidebandStreamChanged; }
// Returns true if the next buffer should be presented at the expected present time
bool shouldPresentNow(nsecs_t expectedPresentTime) const;
// Returns true if the next buffer should be presented at the expected present time,
// overridden by BufferStateLayer and BufferQueueLayer for implementation
// specific logic
virtual bool isBufferDue(nsecs_t /*expectedPresentTime*/) const = 0;
std::atomic<bool> mAutoRefresh{false};
std::atomic<bool> mSidebandStreamChanged{false};
private:
virtual bool fenceHasSignaled() const = 0;
virtual bool framePresentTimeIsCurrent(nsecs_t expectedPresentTime) const = 0;
virtual uint64_t getFrameNumber(nsecs_t expectedPresentTime) const = 0;
// Latch sideband stream and returns true if the dirty region should be updated.
virtual bool latchSidebandStream(bool& recomputeVisibleRegions) = 0;
virtual bool hasFrameUpdate() const = 0;
virtual status_t updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime,
nsecs_t expectedPresentTime) = 0;
virtual status_t updateActiveBuffer() = 0;
virtual status_t updateFrameNumber(nsecs_t latchTime) = 0;
// We generate InputWindowHandles for all non-cursor buffered layers regardless of whether they
// have an InputChannel. This is to enable the InputDispatcher to do PID based occlusion
// detection.
bool needsInputInfo() const override { return !mPotentialCursor; }
// Returns true if this layer requires filtering
bool needsFiltering(const DisplayDevice*) const override;
bool needsFilteringForScreenshots(const DisplayDevice*,
const ui::Transform& inverseParentTransform) const override;
// BufferStateLayers can return Rect::INVALID_RECT if the layer does not have a display frame
// and its parent layer is not bounded
Rect getBufferSize(const State& s) const override;
PixelFormat getPixelFormat() const;
// Computes the transform matrix using the setFilteringEnabled to determine whether the
// transform matrix should be computed for use with bilinear filtering.
void getDrawingTransformMatrix(bool filteringEnabled, float outMatrix[16]);
std::unique_ptr<compositionengine::LayerFECompositionState> mCompositionState;
FloatRect computeSourceBounds(const FloatRect& parentBounds) const override;
};
} // namespace android
|
