surfaceflinger测试程序 [英] surfaceflinger test program

问题描述

我想写在Android中用于测试的本地应用程序 surfaceflinger。有没有简单的程序，说明如何创建 表面上，登记的缓冲区和后缓冲区上Surfaceflinger。

I want to write a native application in Android for testing surfaceflinger. Is there any simple program that shows how to create surface, register buffers and post buffers on Surfaceflinger.

推荐答案

框架/基/库/ surfaceflinger /测试/调整/ resize.cpp 是个好地方开始。 但我的测试程序的版本（Eclair的来自供应商）是过时的，有些表面 API已经被移动到 SurfaceControl 你必须：
SurfaceComposerClient :: createSurface（） => SurfaceControl
SurfaceControl-＆GT; getSurface（） => 表面

frameworks/base/libs/surfaceflinger/tests/resize/resize.cpp is a good place to start. But my version (Eclair from vendor) of the test app is out-dated, some Surface API has been moved to SurfaceControl and you have to:
SurfaceComposerClient::createSurface() => SurfaceControl
SurfaceControl->getSurface() => Surface

其次使用 SurfaceComposerClient :: openTransaction（）/ closeTransaction（） 开往所有交易SurfaceFlinger表面，如：
表面::锁（）/ unlockAndPost（）和 SurfaceControl :: setLayer（）/的setSize（）

Secondly use SurfaceComposerClient::openTransaction()/closeTransaction() to bound all transactions to SurfaceFlinger surface, eg:
Surface::lock()/unlockAndPost() and SurfaceControl::setLayer()/setSize()

我这里还有样品codeS（希望这编译：P）

Here're some sample codes (hope this compiles :P)

sp<SurfaceComposerClient> client;
sp<SurfaceControl> control;
sp<Surface> surface;
SurfaceID sid = 0;
Surface::SurfaceInfo sinfo;
// set up the thread-pool, needed for Binder
sp<ProcessState> proc(ProcessState::self());
ProcessState::self()->startThreadPool();
client = new SurfaceComposerClient();
control = client->createSurface(getpid(), sid, 160, 240, PIXEL_FORMAT_RGB_565);
surface = control->getSurface();

// global transaction sometimes cannot trigger a redraw
//client->openGlobalTransaction();

printf("setLayer...\n");
client->openTransaction();
control->setLayer(100000);
client->closeTransaction();
printf("setLayer done\n");

printf("memset 0xF800...\n");
client->openTransaction();
surface->lock(&sinfo);
android_memset16((uint16_t*)sinfo.bits, 0xF800, sinfo.s*pfInfo.bytesPerPixel*sinfo.h);
surface->unlockAndPost();
client->closeTransaction();
printf("memset 0xF800 done\n");
sleep(2);

printf("setSize...\n");
client->openTransaction();
control->setSize(80, 120);
client->closeTransaction();
printf("setSize done\n");
sleep(2);

printf("memset 0x07E0...\n");
client->openTransaction();
surface->lock(&sinfo);
android_memset16((uint16_t*)sinfo.bits, 0x07E0, sinfo.s*pfInfo.bytesPerPixel*sinfo.h);
surface->unlockAndPost();
printf("memset 0x07E0 done\n");
client->closeTransaction();
sleep(2);

printf("setPosition...\n");
client->openTransaction();
control->setPosition(100, 100);
client->closeTransaction();
printf("setPosition done\n");
sleep(2);

// global transaction sometimes cannot trigger a redraw
//client->closeGlobalTransaction();

printf("bye\n");

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