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/*
* Copyright (C) 2011 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.
*/
#include <gtest/gtest.h>
#include <android/native_window.h>
#include <binder/IMemory.h>
#include <gui/ISurfaceComposer.h>
#include <gui/Surface.h>
#include <gui/SurfaceComposerClient.h>
#include <private/gui/ComposerService.h>
#include <utils/String8.h>
#include <ui/DisplayInfo.h>
namespace android {
// Fill an RGBA_8888 formatted surface with a single color.
static void fillSurfaceRGBA8(const sp<SurfaceControl>& sc,
uint8_t r, uint8_t g, uint8_t b) {
ANativeWindow_Buffer outBuffer;
sp<Surface> s = sc->getSurface();
ASSERT_TRUE(s != NULL);
ASSERT_EQ(NO_ERROR, s->lock(&outBuffer, NULL));
uint8_t* img = reinterpret_cast<uint8_t*>(outBuffer.bits);
for (uint32_t y = 0; y < outBuffer.height; y++) {
for (uint32_t x = 0; x < outBuffer.width; x++) {
uint8_t* pixel = img + (4 * (y*outBuffer.stride + x));
pixel[0] = r;
pixel[1] = g;
pixel[2] = b;
pixel[3] = 255;
}
}
ASSERT_EQ(NO_ERROR, s->unlockAndPost());
}
// A ScreenCapture is a screenshot from SurfaceFlinger that can be used to check
// individual pixel values for testing purposes.
class ScreenCapture : public RefBase {
public:
static void captureScreen(sp<ScreenCapture>* sc) {
sp<IGraphicBufferProducer> producer;
sp<IGraphicBufferConsumer> consumer;
BufferQueue::createBufferQueue(&producer, &consumer);
IGraphicBufferProducer::QueueBufferOutput bufferOutput;
sp<CpuConsumer> cpuConsumer = new CpuConsumer(consumer, 1);
sp<ISurfaceComposer> sf(ComposerService::getComposerService());
sp<IBinder> display(sf->getBuiltInDisplay(
ISurfaceComposer::eDisplayIdMain));
ASSERT_EQ(NO_ERROR, sf->captureScreen(display, producer, Rect(), 0, 0,
0, INT_MAX, false));
*sc = new ScreenCapture(cpuConsumer);
}
void checkPixel(uint32_t x, uint32_t y, uint8_t r, uint8_t g, uint8_t b) {
ASSERT_EQ(HAL_PIXEL_FORMAT_RGBA_8888, mBuf.format);
const uint8_t* img = static_cast<const uint8_t*>(mBuf.data);
const uint8_t* pixel = img + (4 * (y * mBuf.stride + x));
if (r != pixel[0] || g != pixel[1] || b != pixel[2]) {
String8 err(String8::format("pixel @ (%3d, %3d): "
"expected [%3d, %3d, %3d], got [%3d, %3d, %3d]",
x, y, r, g, b, pixel[0], pixel[1], pixel[2]));
EXPECT_EQ(String8(), err);
}
}
private:
ScreenCapture(const sp<CpuConsumer>& cc) :
mCC(cc) {
EXPECT_EQ(NO_ERROR, mCC->lockNextBuffer(&mBuf));
}
~ScreenCapture() {
mCC->unlockBuffer(mBuf);
}
sp<CpuConsumer> mCC;
CpuConsumer::LockedBuffer mBuf;
};
class LayerUpdateTest : public ::testing::Test {
protected:
virtual void SetUp() {
mComposerClient = new SurfaceComposerClient;
ASSERT_EQ(NO_ERROR, mComposerClient->initCheck());
sp<IBinder> display(SurfaceComposerClient::getBuiltInDisplay(
ISurfaceComposer::eDisplayIdMain));
DisplayInfo info;
SurfaceComposerClient::getDisplayInfo(display, &info);
ssize_t displayWidth = info.w;
ssize_t displayHeight = info.h;
// Background surface
mBGSurfaceControl = mComposerClient->createSurface(
String8("BG Test Surface"), displayWidth, displayHeight,
PIXEL_FORMAT_RGBA_8888, 0);
ASSERT_TRUE(mBGSurfaceControl != NULL);
ASSERT_TRUE(mBGSurfaceControl->isValid());
fillSurfaceRGBA8(mBGSurfaceControl, 63, 63, 195);
// Foreground surface
mFGSurfaceControl = mComposerClient->createSurface(
String8("FG Test Surface"), 64, 64, PIXEL_FORMAT_RGBA_8888, 0);
ASSERT_TRUE(mFGSurfaceControl != NULL);
ASSERT_TRUE(mFGSurfaceControl->isValid());
fillSurfaceRGBA8(mFGSurfaceControl, 195, 63, 63);
// Synchronization surface
mSyncSurfaceControl = mComposerClient->createSurface(
String8("Sync Test Surface"), 1, 1, PIXEL_FORMAT_RGBA_8888, 0);
ASSERT_TRUE(mSyncSurfaceControl != NULL);
ASSERT_TRUE(mSyncSurfaceControl->isValid());
fillSurfaceRGBA8(mSyncSurfaceControl, 31, 31, 31);
SurfaceComposerClient::openGlobalTransaction();
ASSERT_EQ(NO_ERROR, mBGSurfaceControl->setLayer(INT_MAX-2));
ASSERT_EQ(NO_ERROR, mBGSurfaceControl->show());
ASSERT_EQ(NO_ERROR, mFGSurfaceControl->setLayer(INT_MAX-1));
ASSERT_EQ(NO_ERROR, mFGSurfaceControl->setPosition(64, 64));
ASSERT_EQ(NO_ERROR, mFGSurfaceControl->show());
ASSERT_EQ(NO_ERROR, mSyncSurfaceControl->setLayer(INT_MAX-1));
ASSERT_EQ(NO_ERROR, mSyncSurfaceControl->setPosition(displayWidth-2,
displayHeight-2));
ASSERT_EQ(NO_ERROR, mSyncSurfaceControl->show());
SurfaceComposerClient::closeGlobalTransaction(true);
}
virtual void TearDown() {
mComposerClient->dispose();
mBGSurfaceControl = 0;
mFGSurfaceControl = 0;
mSyncSurfaceControl = 0;
mComposerClient = 0;
}
void waitForPostedBuffers() {
// Since the sync surface is in synchronous mode (i.e. double buffered)
// posting three buffers to it should ensure that at least two
// SurfaceFlinger::handlePageFlip calls have been made, which should
// guaranteed that a buffer posted to another Surface has been retired.
fillSurfaceRGBA8(mSyncSurfaceControl, 31, 31, 31);
fillSurfaceRGBA8(mSyncSurfaceControl, 31, 31, 31);
fillSurfaceRGBA8(mSyncSurfaceControl, 31, 31, 31);
}
sp<SurfaceComposerClient> mComposerClient;
sp<SurfaceControl> mBGSurfaceControl;
sp<SurfaceControl> mFGSurfaceControl;
// This surface is used to ensure that the buffers posted to
// mFGSurfaceControl have been picked up by SurfaceFlinger.
sp<SurfaceControl> mSyncSurfaceControl;
};
TEST_F(LayerUpdateTest, LayerMoveWorks) {
sp<ScreenCapture> sc;
{
SCOPED_TRACE("before move");
ScreenCapture::captureScreen(&sc);
sc->checkPixel( 0, 12, 63, 63, 195);
sc->checkPixel( 75, 75, 195, 63, 63);
sc->checkPixel(145, 145, 63, 63, 195);
}
SurfaceComposerClient::openGlobalTransaction();
ASSERT_EQ(NO_ERROR, mFGSurfaceControl->setPosition(128, 128));
SurfaceComposerClient::closeGlobalTransaction(true);
{
// This should reflect the new position, but not the new color.
SCOPED_TRACE("after move, before redraw");
ScreenCapture::captureScreen(&sc);
sc->checkPixel( 24, 24, 63, 63, 195);
sc->checkPixel( 75, 75, 63, 63, 195);
sc->checkPixel(145, 145, 195, 63, 63);
}
fillSurfaceRGBA8(mFGSurfaceControl, 63, 195, 63);
waitForPostedBuffers();
{
// This should reflect the new position and the new color.
SCOPED_TRACE("after redraw");
ScreenCapture::captureScreen(&sc);
sc->checkPixel( 24, 24, 63, 63, 195);
sc->checkPixel( 75, 75, 63, 63, 195);
sc->checkPixel(145, 145, 63, 195, 63);
}
}
TEST_F(LayerUpdateTest, LayerResizeWorks) {
sp<ScreenCapture> sc;
{
SCOPED_TRACE("before resize");
ScreenCapture::captureScreen(&sc);
sc->checkPixel( 0, 12, 63, 63, 195);
sc->checkPixel( 75, 75, 195, 63, 63);
sc->checkPixel(145, 145, 63, 63, 195);
}
ALOGD("resizing");
SurfaceComposerClient::openGlobalTransaction();
ASSERT_EQ(NO_ERROR, mFGSurfaceControl->setSize(128, 128));
SurfaceComposerClient::closeGlobalTransaction(true);
ALOGD("resized");
{
// This should not reflect the new size or color because SurfaceFlinger
// has not yet received a buffer of the correct size.
SCOPED_TRACE("after resize, before redraw");
ScreenCapture::captureScreen(&sc);
sc->checkPixel( 0, 12, 63, 63, 195);
sc->checkPixel( 75, 75, 195, 63, 63);
sc->checkPixel(145, 145, 63, 63, 195);
}
ALOGD("drawing");
fillSurfaceRGBA8(mFGSurfaceControl, 63, 195, 63);
waitForPostedBuffers();
ALOGD("drawn");
{
// This should reflect the new size and the new color.
SCOPED_TRACE("after redraw");
ScreenCapture::captureScreen(&sc);
sc->checkPixel( 24, 24, 63, 63, 195);
sc->checkPixel( 75, 75, 63, 195, 63);
sc->checkPixel(145, 145, 63, 195, 63);
}
}
}
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