TestWindowContext.cpp revision 2de950d5a8b47c7b4648ada1b1260ce4b7342798 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16#include "TestWindowContext.h"
17
18#include "AnimationContext.h"
19#include "IContextFactory.h"
20#include "RecordingCanvas.h"
21#include "RenderNode.h"
22#include "SkTypes.h"
23#include "gui/BufferQueue.h"
24#include "gui/CpuConsumer.h"
25#include "gui/IGraphicBufferConsumer.h"
26#include "gui/IGraphicBufferProducer.h"
27#include "gui/Surface.h"
28#include "renderthread/RenderProxy.h"
29
30#include <cutils/memory.h>
31
32namespace {
33
34/**
35 * Helper class for setting up android::uirenderer::renderthread::RenderProxy.
36 */
37class ContextFactory : public android::uirenderer::IContextFactory {
38public:
39    android::uirenderer::AnimationContext* createAnimationContext
40        (android::uirenderer::renderthread::TimeLord& clock) override {
41        return new android::uirenderer::AnimationContext(clock);
42    }
43};
44
45} // anonymous namespace
46
47namespace android {
48namespace uirenderer {
49
50/**
51  Android strong pointers (android::sp) can't hold forward-declared classes,
52  so we have to use pointer-to-implementation here if we want to hide the
53  details from our non-framework users.
54*/
55
56class TestWindowContext::TestWindowData {
57
58public:
59
60    explicit TestWindowData(SkISize size) : mSize(size) {
61        android::BufferQueue::createBufferQueue(&mProducer, &mConsumer);
62        mCpuConsumer = new android::CpuConsumer(mConsumer, 1);
63        mCpuConsumer->setName(android::String8("TestWindowContext"));
64        mCpuConsumer->setDefaultBufferSize(mSize.width(), mSize.height());
65        mAndroidSurface = new android::Surface(mProducer);
66        native_window_set_buffers_dimensions(mAndroidSurface.get(),
67                                             mSize.width(), mSize.height());
68        native_window_set_buffers_format(mAndroidSurface.get(),
69                                         android::PIXEL_FORMAT_RGBA_8888);
70        native_window_set_usage(mAndroidSurface.get(),
71                                GRALLOC_USAGE_SW_READ_OFTEN |
72                                GRALLOC_USAGE_SW_WRITE_NEVER |
73                                GRALLOC_USAGE_HW_RENDER);
74        mRootNode.reset(new android::uirenderer::RenderNode());
75        mRootNode->incStrong(nullptr);
76        mRootNode->mutateStagingProperties().setLeftTopRightBottom
77            (0, 0, mSize.width(), mSize.height());
78        mRootNode->mutateStagingProperties().setClipToBounds(false);
79        mRootNode->setPropertyFieldsDirty(android::uirenderer::RenderNode::GENERIC);
80        ContextFactory factory;
81        mProxy.reset
82            (new android::uirenderer::renderthread::RenderProxy(false,
83                                                                mRootNode.get(),
84                                                                &factory));
85        mProxy->loadSystemProperties();
86        mProxy->initialize(mAndroidSurface.get());
87        float lightX = mSize.width() / 2.0f;
88        android::uirenderer::Vector3 lightVector { lightX, -200.0f, 800.0f };
89        mProxy->setup(800.0f, 255 * 0.075f, 255 * 0.15f);
90        mProxy->setLightCenter(lightVector);
91        mCanvas.reset(new android::uirenderer::RecordingCanvas(mSize.width(), mSize.height()));
92    }
93
94    SkCanvas* prepareToDraw() {
95        //mCanvas->reset(mSize.width(), mSize.height());
96        mCanvas->clipRect(0, 0, mSize.width(), mSize.height(), SkClipOp::kReplace);
97        return mCanvas->asSkCanvas();
98    }
99
100    void finishDrawing() {
101        mRootNode->setStagingDisplayList(mCanvas->finishRecording());
102        mProxy->syncAndDrawFrame();
103        // Surprisingly, calling mProxy->fence() here appears to make no difference to
104        // the timings we record.
105    }
106
107    void fence() {
108        mProxy->fence();
109    }
110
111    bool capturePixels(SkBitmap* bmp) {
112        sk_sp<SkColorSpace> colorSpace = SkColorSpace::MakeNamed(SkColorSpace::kSRGB_Named);
113        SkImageInfo destinationConfig =
114            SkImageInfo::Make(mSize.width(), mSize.height(),
115                              kRGBA_8888_SkColorType, kPremul_SkAlphaType, colorSpace);
116        bmp->allocPixels(destinationConfig);
117        android_memset32((uint32_t*) bmp->getPixels(), SK_ColorRED,
118                         mSize.width() * mSize.height() * 4);
119
120        android::CpuConsumer::LockedBuffer nativeBuffer;
121        android::status_t retval = mCpuConsumer->lockNextBuffer(&nativeBuffer);
122        if (retval == android::BAD_VALUE) {
123            SkDebugf("write_canvas_png() got no buffer; returning transparent");
124            // No buffer ready to read - commonly triggered by dm sending us
125            // a no-op source, or calling code that doesn't do anything on this
126            // backend.
127            bmp->eraseColor(SK_ColorTRANSPARENT);
128            return false;
129        } else if (retval) {
130            SkDebugf("Failed to lock buffer to read pixels: %d.", retval);
131            return false;
132        }
133
134        // Move the pixels into the destination SkBitmap
135
136        LOG_ALWAYS_FATAL_IF(nativeBuffer.format != android::PIXEL_FORMAT_RGBA_8888,
137                            "Native buffer not RGBA!");
138        SkImageInfo nativeConfig =
139            SkImageInfo::Make(nativeBuffer.width, nativeBuffer.height,
140                              kRGBA_8888_SkColorType, kPremul_SkAlphaType);
141
142        // Android stride is in pixels, Skia stride is in bytes
143        SkBitmap nativeWrapper;
144        bool success =
145            nativeWrapper.installPixels(nativeConfig, nativeBuffer.data, nativeBuffer.stride * 4);
146        if (!success) {
147            SkDebugf("Failed to wrap HWUI buffer in a SkBitmap");
148            return false;
149        }
150
151        LOG_ALWAYS_FATAL_IF(bmp->colorType() != kRGBA_8888_SkColorType,
152                            "Destination buffer not RGBA!");
153        success =
154            nativeWrapper.readPixels(destinationConfig, bmp->getPixels(), bmp->rowBytes(), 0, 0);
155        if (!success) {
156            SkDebugf("Failed to extract pixels from HWUI buffer");
157            return false;
158        }
159
160        mCpuConsumer->unlockBuffer(nativeBuffer);
161
162        return true;
163    }
164
165private:
166
167    std::unique_ptr<android::uirenderer::RenderNode> mRootNode;
168    std::unique_ptr<android::uirenderer::renderthread::RenderProxy> mProxy;
169    std::unique_ptr<android::uirenderer::RecordingCanvas> mCanvas;
170    android::sp<android::IGraphicBufferProducer> mProducer;
171    android::sp<android::IGraphicBufferConsumer> mConsumer;
172    android::sp<android::CpuConsumer> mCpuConsumer;
173    android::sp<android::Surface> mAndroidSurface;
174    SkISize mSize;
175};
176
177
178TestWindowContext::TestWindowContext() :
179    mData (nullptr) { }
180
181TestWindowContext::~TestWindowContext() {
182    delete mData;
183}
184
185void TestWindowContext::initialize(int width, int height)  {
186    mData = new TestWindowData(SkISize::Make(width, height));
187}
188
189SkCanvas* TestWindowContext::prepareToDraw() {
190    return mData ? mData->prepareToDraw() : nullptr;
191}
192
193void TestWindowContext::finishDrawing() {
194    if (mData) {
195        mData->finishDrawing();
196    }
197}
198
199void TestWindowContext::fence() {
200    if (mData) {
201        mData->fence();
202    }
203}
204
205bool TestWindowContext::capturePixels(SkBitmap* bmp) {
206    return mData ? mData->capturePixels(bmp) : false;
207}
208
209} // namespace uirenderer
210} // namespace android
211
212