TestWindowContext.cpp revision 834653bcf80a3879c4d80004469053f205d45b69 
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        mCanvas->save(SaveFlags::MatrixClip);  // balanced in prepareToDraw()
94    }
95
96    SkCanvas* prepareToDraw() {
97        //mCanvas->reset(mSize.width(), mSize.height());
98        mCanvas->restore();  // balancing inital save in constructor
99        mCanvas->save(SaveFlags::MatrixClip);
100        mCanvas->clipRect(0, 0, mSize.width(), mSize.height(), SkClipOp::kIntersect);
101        return mCanvas->asSkCanvas();
102    }
103
104    void finishDrawing() {
105        mRootNode->setStagingDisplayList(mCanvas->finishRecording(), nullptr);
106        mProxy->syncAndDrawFrame(nullptr);
107        // Surprisingly, calling mProxy->fence() here appears to make no difference to
108        // the timings we record.
109    }
110
111    void fence() {
112        mProxy->fence();
113    }
114
115    bool capturePixels(SkBitmap* bmp) {
116        sk_sp<SkColorSpace> colorSpace = SkColorSpace::MakeNamed(SkColorSpace::kSRGB_Named);
117        SkImageInfo destinationConfig =
118            SkImageInfo::Make(mSize.width(), mSize.height(),
119                              kRGBA_8888_SkColorType, kPremul_SkAlphaType, colorSpace);
120        bmp->allocPixels(destinationConfig);
121        android_memset32((uint32_t*) bmp->getPixels(), SK_ColorRED,
122                         mSize.width() * mSize.height() * 4);
123
124        android::CpuConsumer::LockedBuffer nativeBuffer;
125        android::status_t retval = mCpuConsumer->lockNextBuffer(&nativeBuffer);
126        if (retval == android::BAD_VALUE) {
127            SkDebugf("write_canvas_png() got no buffer; returning transparent");
128            // No buffer ready to read - commonly triggered by dm sending us
129            // a no-op source, or calling code that doesn't do anything on this
130            // backend.
131            bmp->eraseColor(SK_ColorTRANSPARENT);
132            return false;
133        } else if (retval) {
134            SkDebugf("Failed to lock buffer to read pixels: %d.", retval);
135            return false;
136        }
137
138        // Move the pixels into the destination SkBitmap
139
140        LOG_ALWAYS_FATAL_IF(nativeBuffer.format != android::PIXEL_FORMAT_RGBA_8888,
141                            "Native buffer not RGBA!");
142        SkImageInfo nativeConfig =
143            SkImageInfo::Make(nativeBuffer.width, nativeBuffer.height,
144                              kRGBA_8888_SkColorType, kPremul_SkAlphaType);
145
146        // Android stride is in pixels, Skia stride is in bytes
147        SkBitmap nativeWrapper;
148        bool success =
149            nativeWrapper.installPixels(nativeConfig, nativeBuffer.data, nativeBuffer.stride * 4);
150        if (!success) {
151            SkDebugf("Failed to wrap HWUI buffer in a SkBitmap");
152            return false;
153        }
154
155        LOG_ALWAYS_FATAL_IF(bmp->colorType() != kRGBA_8888_SkColorType,
156                            "Destination buffer not RGBA!");
157        success =
158            nativeWrapper.readPixels(destinationConfig, bmp->getPixels(), bmp->rowBytes(), 0, 0);
159        if (!success) {
160            SkDebugf("Failed to extract pixels from HWUI buffer");
161            return false;
162        }
163
164        mCpuConsumer->unlockBuffer(nativeBuffer);
165
166        return true;
167    }
168
169private:
170
171    std::unique_ptr<android::uirenderer::RenderNode> mRootNode;
172    std::unique_ptr<android::uirenderer::renderthread::RenderProxy> mProxy;
173    std::unique_ptr<android::uirenderer::RecordingCanvas> mCanvas;
174    android::sp<android::IGraphicBufferProducer> mProducer;
175    android::sp<android::IGraphicBufferConsumer> mConsumer;
176    android::sp<android::CpuConsumer> mCpuConsumer;
177    android::sp<android::Surface> mAndroidSurface;
178    SkISize mSize;
179};
180
181
182TestWindowContext::TestWindowContext() :
183    mData (nullptr) { }
184
185TestWindowContext::~TestWindowContext() {
186    delete mData;
187}
188
189void TestWindowContext::initialize(int width, int height)  {
190    mData = new TestWindowData(SkISize::Make(width, height));
191}
192
193SkCanvas* TestWindowContext::prepareToDraw() {
194    return mData ? mData->prepareToDraw() : nullptr;
195}
196
197void TestWindowContext::finishDrawing() {
198    if (mData) {
199        mData->finishDrawing();
200    }
201}
202
203void TestWindowContext::fence() {
204    if (mData) {
205        mData->fence();
206    }
207}
208
209bool TestWindowContext::capturePixels(SkBitmap* bmp) {
210    return mData ? mData->capturePixels(bmp) : false;
211}
212
213} // namespace uirenderer
214} // namespace android
215
216