Android 图像显示 -- setClientTarget的流程

 

SurfaceFlinger端的 setClientTarget的流程

 

11-13 00:47:20.455   224   224 E HwcComposer: stackdump:#00 pc 00086f8f  /system/bin/surfaceflinger (android::Hwc2::impl::Composer::setClientTarget(unsigned long long, unsigned int, android::sp<android::GraphicBuffer> const&, int, android::hardware::graphics::common::V1_2::Dataspace, std::__1::vector<android::hardware::graphics::composer::V2_1::IComposerClient::Rect, std::__1::allocator<android::hardware::graphics::composer::V2_1::IComposerClient::Rect> > const&)+182)
11-13 00:47:20.455   224   224 E HwcComposer: stackdump:#01 pc 00096791  /system/bin/surfaceflinger (android::impl::HWComposer::setClientTarget(android::HalDisplayId, unsigned int, android::sp<android::Fence> const&, android::sp<android::GraphicBuffer> const&, android::hardware::graphics::common::V1_2::Dataspace)+408)
11-13 00:47:20.455   224   224 E HwcComposer: stackdump:#02 pc 0008e881  /system/bin/surfaceflinger (android::FramebufferSurface::advanceFrame()+332)
11-13 00:47:20.455   224   224 E HwcComposer: stackdump:#03 pc 00122a55  /system/bin/surfaceflinger (android::compositionengine::impl::RenderSurface::queueBuffer(android::base::unique_fd_impl<android::base::DefaultCloser>)+436)
11-13 00:47:20.455   224   224 E HwcComposer: stackdump:#04 pc 001069ed  /system/bin/surfaceflinger (android::compositionengine::impl::Output::finishFrame(android::compositionengine::CompositionRefreshArgs const&)+168)
11-13 00:47:20.455   224   224 E HwcComposer: stackdump:#05 pc 00100c89  /system/bin/surfaceflinger (android::compositionengine::impl::Display::finishFrame(android::compositionengine::CompositionRefreshArgs const&)+76)
11-13 00:47:20.455   224   224 E HwcComposer: stackdump:#06 pc 001054ef  /system/bin/surfaceflinger (android::compositionengine::impl::Output::present(android::compositionengine::CompositionRefreshArgs const&)+114)
11-13 00:47:20.455   224   224 E HwcComposer: stackdump:#07 pc 000ff727  /system/bin/surfaceflinger (android::compositionengine::impl::CompositionEngine::present(android::compositionengine::CompositionRefreshArgs&)+146)
11-13 00:47:20.455   224   224 E HwcComposer: stackdump:#08 pc 000d600b  /system/bin/surfaceflinger (android::SurfaceFlinger::onMessageRefresh()+1530)
11-13 00:47:20.455   224   224 E HwcComposer: stackdump:#09 pc 000d570d  /system/bin/surfaceflinger (android::SurfaceFlinger::onMessageInvalidate(long long, long long)+8784)
11-13 00:47:20.455   224   224 E HwcComposer: stackdump:#10 pc 000b9907  /system/bin/surfaceflinger (android::impl::MessageQueue::Handler::handleMessage(android::Message const&)+94)
11-13 00:47:20.456   224   224 E HwcComposer: stackdump:#11 pc 00010179  /system/lib/libutils.so (android::Looper::pollInner(int)+288)
11-13 00:47:20.456   224   224 E HwcComposer: stackdump:#12 pc 0000ffff  /system/lib/libutils.so (android::Looper::pollOnce(int, int*, int*, void**)+62)
11-13 00:47:20.456   224   224 E HwcComposer: stackdump:#13 pc 000b9dd1  /system/bin/surfaceflinger (android::impl::MessageQueue::waitMessage()+56)
11-13 00:47:20.456   224   224 E HwcComposer: stackdump:#14 pc 000cc50d  /system/bin/surfaceflinger (android::SurfaceFlinger::run()+6)
11-13 00:47:20.456   224   224 E HwcComposer: stackdump:#15 pc 000ff253  /system/bin/surfaceflinger (main+1182)
11-13 00:47:20.456   224   224 E HwcComposer: stackdump:#16 pc 0003253b  /apex/com.android.runtime/lib/bionic/libc.so (__libc_init+54)
11-13 00:47:20.456   224   224 D HwcComposer: surfaceflinger dump data

 

RenderSurface管理者一个Surface（BufferQueue），对外提供了dequeueBuffer和queueBuffer方法，当需要合成时，调用dequeueBuffer获取一个GraphicBuffer，绘图，然后调用queueBuffer送去显示，此时就进到了setTargetClient的流程

 

 

 

HWC 端的 setClientTarget的流程

11-13 00:47:27.685   337   337 E hwc-drm-two: stackdump:#00 pc 00013865  /vendor/lib/hw/hwcomposer.drm.so (android::DrmHwcTwo::HwcDisplay::SetClientTarget(native_handle const*, int, int, hwc_region)+156)
11-13 00:47:27.685   337   337 E hwc-drm-two: stackdump:#01 pc 000147c1  /vendor/lib/hw/hwcomposer.drm.so (int android::DrmHwcTwo::DisplayHook<HWC2::Error (android::DrmHwcTwo::HwcDisplay::*)(native_handle const*, int, int, hwc_region), &(android::DrmHwcTwo::HwcDisplay::SetClientTarget(native_handle const*, int, int, hwc_region)), native_handle const*, int, int, hwc_region>(hwc2_device*, unsigned long long, native_handle const*, int, int, hwc_region)+104)
11-13 00:47:27.685   337   337 E hwc-drm-two: stackdump:#02 pc 0000774f  /vendor/bin/hw/android.hardware.graphics.composer@2.2-service.start (android::hardware::graphics::composer::V2_1::passthrough::detail::HwcHalImpl<android::hardware::graphics::composer::V2_2::hal::ComposerHal>::setClientTarget(unsigned long long, native_handle const*, int, int, std::__1::vector<hwc_rect, std::__1::allocator<hwc_rect> > const&)+40)
11-13 00:47:27.685   337   337 E hwc-drm-two: stackdump:#03 pc 0000c5ad  /vendor/bin/hw/android.hardware.graphics.composer@2.2-service.start (android::hardware::graphics::composer::V2_1::hal::ComposerCommandEngine::executeSetClientTarget(unsigned short)+344)
11-13 00:47:27.685   337   337 E hwc-drm-two: stackdump:#04 pc 0000b083  /vendor/bin/hw/android.hardware.graphics.composer@2.2-service.start (android::hardware::graphics::composer::V2_1::hal::ComposerCommandEngine::execute(unsigned int, android::hardware::hidl_vec<android::hardware::hidl_handle> const&, bool*, unsigned int*, android::hardware::hidl_vec<android::hardware::hidl_handle>*)+90)
11-13 00:47:27.685   337   337 E hwc-drm-two: stackdump:#05 pc 0000a053  /vendor/bin/hw/android.hardware.graphics.composer@2.2-service.start (android::hardware::graphics::composer::V2_1::hal::detail::ComposerClientImpl<android::hardware::graphics::composer::V2_1::IComposerClient, android::hardware::graphics::composer::V2_1::hal::ComposerHal>::executeCommands(unsigned int, android::hardware::hidl_vec<android::hardware::hidl_handle> const&, std::__1::function<void (android::hardware::graphics::composer::V2_1::Error, bool, unsigned int, android::hardware::hidl_vec<android::hardware::hidl_handle> const&)>)+82)
11-13 00:47:27.685   337   337 E hwc-drm-two: stackdump:#06 pc 0001df97  /vendor/lib/android.hardware.graphics.composer@2.2.so (android::hardware::graphics::composer::V2_2::BnHwComposerClient::_hidl_executeCommands_2_2(android::hidl::base::V1_0::BnHwBase*, android::hardware::Parcel const&, android::hardware::Parcel*, std::__1::function<void (android::hardware::Parcel&)>)+294)
11-13 00:47:27.685   337   337 E hwc-drm-two: stackdump:#07 pc 0001eaeb  /vendor/lib/android.hardware.graphics.composer@2.2.so (android::hardware::graphics::composer::V2_2::BnHwComposerClient::onTransact(unsigned int, android::hardware::Parcel const&, android::hardware::Parcel*, unsigned int, std::__1::function<void (android::hardware::Parcel&)>)+2414)
11-13 00:47:27.685   337   337 E hwc-drm-two: stackdump:#08 pc 000546d9  /apex/com.android.vndk.v31/lib/libhidlbase.so (android::hardware::BHwBinder::transact(unsigned int, android::hardware::Parcel const&, android::hardware::Parcel*, unsigned int, std::__1::function<void (android::hardware::Parcel&)>)+96)
11-13 00:47:27.685   337   337 E hwc-drm-two: stackdump:#09 pc 000536a7  /apex/com.android.vndk.v31/lib/libhidlbase.so (android::hardware::IPCThreadState::getAndExecuteCommand()+974)
11-13 00:47:27.685   337   337 E hwc-drm-two: stackdump:#10 pc 00053239  /apex/com.android.vndk.v31/lib/libhidlbase.so (android::hardware::IPCThreadState::joinThreadPool(bool)+56)
11-13 00:47:27.685   337   337 E hwc-drm-two: stackdump:#11 pc 00006d75  /vendor/bin/hw/android.hardware.graphics.composer@2.2-service.start (main+216)
11-13 00:47:27.685   337   337 E hwc-drm-two: stackdump:#12 pc 0003253b  /apex/com.android.runtime/lib/bionic/libc.so (__libc_init+54)