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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /widget/gonk/nativewindow/FakeSurfaceComposer.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'widget/gonk/nativewindow/FakeSurfaceComposer.cpp')
-rw-r--r--widget/gonk/nativewindow/FakeSurfaceComposer.cpp703
1 files changed, 703 insertions, 0 deletions
diff --git a/widget/gonk/nativewindow/FakeSurfaceComposer.cpp b/widget/gonk/nativewindow/FakeSurfaceComposer.cpp
new file mode 100644
index 000000000..7e4a2a9d8
--- /dev/null
+++ b/widget/gonk/nativewindow/FakeSurfaceComposer.cpp
@@ -0,0 +1,703 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ * Copyright (C) 2013 Mozilla Foundation
+ *
+ * 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.
+ */
+
+#define LOG_TAG "FakeSurfaceComposer"
+//#define LOG_NDEBUG 0
+
+#include <stdint.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <cutils/atomic.h>
+#include <cutils/log.h>
+#include <cutils/properties.h>
+#include <private/android_filesystem_config.h>
+
+#include <gui/IDisplayEventConnection.h>
+#include <gui/GraphicBufferAlloc.h>
+#include <gui/Surface.h>
+#include <ui/DisplayInfo.h>
+
+#if ANDROID_VERSION >= 21
+#include <ui/Rect.h>
+#endif
+
+#include "../libdisplay/GonkDisplay.h"
+#include "../nsScreenManagerGonk.h"
+#include "FakeSurfaceComposer.h"
+#include "gfxPrefs.h"
+#include "MainThreadUtils.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/layers/CompositorBridgeParent.h"
+#include "mozilla/layers/CompositorThread.h"
+#include "nsProxyRelease.h"
+#include "nsThreadUtils.h"
+
+using namespace mozilla;
+
+namespace android {
+
+/* static */
+void FakeSurfaceComposer::instantiate() {
+ defaultServiceManager()->addService(
+ String16("SurfaceFlinger"), new FakeSurfaceComposer());
+}
+
+FakeSurfaceComposer::FakeSurfaceComposer()
+ : BnSurfaceComposer()
+{
+}
+
+FakeSurfaceComposer::~FakeSurfaceComposer()
+{
+}
+
+status_t FakeSurfaceComposer::onTransact(uint32_t code, const Parcel& data,
+ Parcel* reply, uint32_t flags)
+{
+ switch (code) {
+ case CREATE_CONNECTION:
+ case CREATE_DISPLAY:
+ case SET_TRANSACTION_STATE:
+ case CAPTURE_SCREEN:
+ {
+ // codes that require permission check
+ IPCThreadState* ipc = IPCThreadState::self();
+ const int pid = ipc->getCallingPid();
+ const int uid = ipc->getCallingUid();
+ // Accept request only when uid is root.
+ if (uid != AID_ROOT) {
+ ALOGE("Permission Denial: "
+ "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid);
+ return PERMISSION_DENIED;
+ }
+ break;
+ }
+ }
+
+ return BnSurfaceComposer::onTransact(code, data, reply, flags);
+}
+
+sp<ISurfaceComposerClient> FakeSurfaceComposer::createConnection()
+{
+ return nullptr;
+}
+
+sp<IGraphicBufferAlloc> FakeSurfaceComposer::createGraphicBufferAlloc()
+{
+ sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc());
+ return gba;
+}
+
+class DestroyDisplayRunnable : public Runnable {
+public:
+ DestroyDisplayRunnable(FakeSurfaceComposer* aComposer, ssize_t aIndex)
+ : mComposer(aComposer), mIndex(aIndex) { }
+ NS_IMETHOD Run() override {
+ MOZ_ASSERT(NS_IsMainThread(), "Must be on main thread.");
+ Mutex::Autolock _l(mComposer->mStateLock);
+ RefPtr<nsScreenManagerGonk> screenManager =
+ nsScreenManagerGonk::GetInstance();
+ screenManager->RemoveScreen(GonkDisplay::DISPLAY_VIRTUAL);
+ mComposer->mDisplays.removeItemsAt(mIndex);
+ return NS_OK;
+ }
+ sp<FakeSurfaceComposer> mComposer;
+ ssize_t mIndex;
+};
+
+sp<IBinder> FakeSurfaceComposer::createDisplay(const String8& displayName,
+ bool secure)
+{
+#if ANDROID_VERSION >= 19
+ class DisplayToken : public BBinder {
+ sp<FakeSurfaceComposer> composer;
+ virtual ~DisplayToken() {
+ MOZ_ASSERT(NS_IsMainThread(), "Must be on main thread.");
+ // no more references, this display must be terminated
+ Mutex::Autolock _l(composer->mStateLock);
+ ssize_t idx = composer->mDisplays.indexOfKey(this);
+ if (idx >= 0) {
+ nsCOMPtr<nsIRunnable> task(new DestroyDisplayRunnable(composer.get(), idx));
+ NS_DispatchToMainThread(task);
+ }
+ }
+ public:
+ DisplayToken(const sp<FakeSurfaceComposer>& composer)
+ : composer(composer) {
+ }
+ };
+
+ sp<BBinder> token = new DisplayToken(this);
+
+ Mutex::Autolock _l(mStateLock);
+ DisplayDeviceState info(HWC_DISPLAY_VIRTUAL);
+ info.displayName = displayName;
+ info.displayId = GonkDisplay::DISPLAY_VIRTUAL;
+ info.isSecure = secure;
+ mDisplays.add(token, info);
+ return token;
+#else
+ return nullptr;
+#endif
+}
+
+#if ANDROID_VERSION >= 19
+void FakeSurfaceComposer::destroyDisplay(const sp<IBinder>& display)
+{
+ Mutex::Autolock _l(mStateLock);
+
+ ssize_t idx = mDisplays.indexOfKey(display);
+ if (idx < 0) {
+ ALOGW("destroyDisplay: invalid display token");
+ return;
+ }
+
+ nsCOMPtr<nsIRunnable> task(new DestroyDisplayRunnable(this, idx));
+ NS_DispatchToMainThread(task);
+}
+#endif
+
+sp<IBinder> FakeSurfaceComposer::getBuiltInDisplay(int32_t id)
+{
+ // support only primary display
+ if (uint32_t(id) != HWC_DISPLAY_PRIMARY) {
+ return NULL;
+ }
+
+ if (!mPrimaryDisplay.get()) {
+ mPrimaryDisplay = new BBinder();
+ }
+ return mPrimaryDisplay;
+}
+
+void FakeSurfaceComposer::setTransactionState(
+ const Vector<ComposerState>& state,
+ const Vector<DisplayState>& displays,
+ uint32_t flags)
+{
+ Mutex::Autolock _l(mStateLock);
+ size_t count = displays.size();
+ for (size_t i=0 ; i<count ; i++) {
+ const DisplayState& s(displays[i]);
+ setDisplayStateLocked(s);
+ }
+}
+
+uint32_t FakeSurfaceComposer::setDisplayStateLocked(const DisplayState& s)
+{
+ ssize_t dpyIdx = mDisplays.indexOfKey(s.token);
+ if (dpyIdx < 0) {
+ return 0;
+ }
+
+ uint32_t flags = 0;
+ DisplayDeviceState& disp(mDisplays.editValueAt(dpyIdx));
+
+ if (!disp.isValid()) {
+ return 0;
+ }
+
+ const uint32_t what = s.what;
+ if (what & DisplayState::eSurfaceChanged) {
+ if (disp.surface->asBinder() != s.surface->asBinder()) {
+ disp.surface = s.surface;
+ flags |= eDisplayTransactionNeeded;
+ }
+ }
+ if (what & DisplayState::eLayerStackChanged) {
+ if (disp.layerStack != s.layerStack) {
+ disp.layerStack = s.layerStack;
+ flags |= eDisplayTransactionNeeded;
+ }
+ }
+ if (what & DisplayState::eDisplayProjectionChanged) {
+ if (disp.orientation != s.orientation) {
+ disp.orientation = s.orientation;
+ flags |= eDisplayTransactionNeeded;
+ }
+ if (disp.frame != s.frame) {
+ disp.frame = s.frame;
+ flags |= eDisplayTransactionNeeded;
+ }
+ if (disp.viewport != s.viewport) {
+ disp.viewport = s.viewport;
+ flags |= eDisplayTransactionNeeded;
+ }
+ }
+#if ANDROID_VERSION >= 21
+ if (what & DisplayState::eDisplaySizeChanged) {
+ if (disp.width != s.width) {
+ disp.width = s.width;
+ flags |= eDisplayTransactionNeeded;
+ }
+ if (disp.height != s.height) {
+ disp.height = s.height;
+ flags |= eDisplayTransactionNeeded;
+ }
+ }
+#endif
+
+ if (what & DisplayState::eSurfaceChanged) {
+ nsCOMPtr<nsIRunnable> runnable =
+ NS_NewRunnableFunction([&]() {
+ MOZ_ASSERT(NS_IsMainThread(), "Must be on main thread.");
+ RefPtr<nsScreenManagerGonk> screenManager = nsScreenManagerGonk::GetInstance();
+ screenManager->AddScreen(GonkDisplay::DISPLAY_VIRTUAL, disp.surface.get());
+ });
+ NS_DispatchToMainThread(runnable, NS_DISPATCH_SYNC);
+ }
+
+ return flags;
+}
+
+void FakeSurfaceComposer::bootFinished()
+{
+}
+
+bool FakeSurfaceComposer::authenticateSurfaceTexture(
+ const sp<IGraphicBufferProducer>& bufferProducer) const {
+ return false;
+}
+
+sp<IDisplayEventConnection> FakeSurfaceComposer::createDisplayEventConnection() {
+ return nullptr;
+}
+
+// ---------------------------------------------------------------------------
+// Capture screen into an IGraphiBufferProducer
+// ---------------------------------------------------------------------------
+
+class Barrier {
+public:
+ inline Barrier() : state(CLOSED) { }
+ inline ~Barrier() { }
+
+ // Release any threads waiting at the Barrier.
+ // Provides release semantics: preceding loads and stores will be visible
+ // to other threads before they wake up.
+ void open() {
+ Mutex::Autolock _l(lock);
+ state = OPENED;
+ cv.broadcast();
+ }
+
+ // Reset the Barrier, so wait() will block until open() has been called.
+ void close() {
+ Mutex::Autolock _l(lock);
+ state = CLOSED;
+ }
+
+ // Wait until the Barrier is OPEN.
+ // Provides acquire semantics: no subsequent loads or stores will occur
+ // until wait() returns.
+ void wait() const {
+ Mutex::Autolock _l(lock);
+ while (state == CLOSED) {
+ cv.wait(lock);
+ }
+ }
+private:
+ enum { OPENED, CLOSED };
+ mutable Mutex lock;
+ mutable Condition cv;
+ volatile int state;
+};
+
+/* The code below is here to handle b/8734824
+ *
+ * We create a IGraphicBufferProducer wrapper that forwards all calls
+ * to the calling binder thread, where they are executed. This allows
+ * the calling thread to be reused (on the other side) and not
+ * depend on having "enough" binder threads to handle the requests.
+ *
+ */
+
+class GraphicProducerWrapper : public BBinder, public MessageHandler {
+ sp<IGraphicBufferProducer> impl;
+ sp<Looper> looper;
+ status_t result;
+ bool exitPending;
+ bool exitRequested;
+ mutable Barrier barrier;
+ volatile int32_t memoryBarrier;
+ uint32_t code;
+ Parcel const* data;
+ Parcel* reply;
+
+ enum {
+ MSG_API_CALL,
+ MSG_EXIT
+ };
+
+ /*
+ * this is called by our "fake" BpGraphicBufferProducer. We package the
+ * data and reply Parcel and forward them to the calling thread.
+ */
+ virtual status_t transact(uint32_t code,
+ const Parcel& data, Parcel* reply, uint32_t flags) {
+ this->code = code;
+ this->data = &data;
+ this->reply = reply;
+ android_atomic_acquire_store(0, &memoryBarrier);
+ if (exitPending) {
+ // if we've exited, we run the message synchronously right here
+ handleMessage(Message(MSG_API_CALL));
+ } else {
+ barrier.close();
+ looper->sendMessage(this, Message(MSG_API_CALL));
+ barrier.wait();
+ }
+ return NO_ERROR;
+ }
+
+ /*
+ * here we run on the binder calling thread. All we've got to do is
+ * call the real BpGraphicBufferProducer.
+ */
+ virtual void handleMessage(const Message& message) {
+ android_atomic_release_load(&memoryBarrier);
+ if (message.what == MSG_API_CALL) {
+ impl->asBinder()->transact(code, data[0], reply);
+ barrier.open();
+ } else if (message.what == MSG_EXIT) {
+ exitRequested = true;
+ }
+ }
+
+public:
+ GraphicProducerWrapper(const sp<IGraphicBufferProducer>& impl) :
+ impl(impl), looper(new Looper(true)), result(NO_ERROR),
+ exitPending(false), exitRequested(false) {
+ }
+
+ status_t waitForResponse() {
+ do {
+ looper->pollOnce(-1);
+ } while (!exitRequested);
+ return result;
+ }
+
+ void exit(status_t result) {
+ this->result = result;
+ exitPending = true;
+ looper->sendMessage(this, Message(MSG_EXIT));
+ }
+};
+
+status_t
+FakeSurfaceComposer::captureScreen(const sp<IBinder>& display
+ , const sp<IGraphicBufferProducer>& producer
+#if ANDROID_VERSION >= 21
+ , Rect sourceCrop
+#endif
+ , uint32_t reqWidth
+ , uint32_t reqHeight
+ , uint32_t minLayerZ
+ , uint32_t maxLayerZ
+#if ANDROID_VERSION >= 21
+ , bool useIdentityTransform
+ , Rotation rotation
+#elif ANDROID_VERSION < 19
+ , bool isCpuConsumer
+#endif
+ )
+{
+ if (display == 0 || producer == 0) {
+ return BAD_VALUE;
+ }
+
+ // Limit only to primary display
+ if (display != mPrimaryDisplay) {
+ return BAD_VALUE;
+ }
+
+ // this creates a "fake" BBinder which will serve as a "fake" remote
+ // binder to receive the marshaled calls and forward them to the
+ // real remote (a BpGraphicBufferProducer)
+ sp<GraphicProducerWrapper> wrapper = new GraphicProducerWrapper(producer);
+ // the asInterface() call below creates our "fake" BpGraphicBufferProducer
+ // which does the marshaling work forwards to our "fake remote" above.
+ sp<IGraphicBufferProducer> fakeProducer = IGraphicBufferProducer::asInterface(wrapper);
+
+ nsCOMPtr<nsIRunnable> runnable =
+ NS_NewRunnableFunction([&]() {
+ captureScreenImp(fakeProducer, reqWidth, reqHeight, wrapper.get());
+ });
+ NS_DispatchToMainThread(runnable);
+
+ status_t result = wrapper->waitForResponse();
+
+ return result;
+}
+
+class RunnableCallTask final : public Runnable
+{
+public:
+ explicit RunnableCallTask(nsIRunnable* aRunnable)
+ : mRunnable(aRunnable) {}
+
+ NS_IMETHOD Run() override
+ {
+ return mRunnable->Run();
+ }
+protected:
+ nsCOMPtr<nsIRunnable> mRunnable;
+};
+
+void
+FakeSurfaceComposer::captureScreenImp(const sp<IGraphicBufferProducer>& producer,
+ uint32_t reqWidth,
+ uint32_t reqHeight,
+ const sp<GraphicProducerWrapper>& wrapper)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ MOZ_ASSERT(wrapper.get());
+
+ RefPtr<nsScreenGonk> screen = nsScreenManagerGonk::GetPrimaryScreen();
+
+ // get screen geometry
+ nsIntRect screenBounds = screen->GetNaturalBounds().ToUnknownRect();
+ const uint32_t hw_w = screenBounds.width;
+ const uint32_t hw_h = screenBounds.height;
+
+ if (reqWidth > hw_w || reqHeight > hw_h) {
+ ALOGE("size mismatch (%d, %d) > (%d, %d)",
+ reqWidth, reqHeight, hw_w, hw_h);
+ static_cast<GraphicProducerWrapper*>(producer->asBinder().get())->exit(BAD_VALUE);
+ return;
+ }
+
+ reqWidth = (!reqWidth) ? hw_w : reqWidth;
+ reqHeight = (!reqHeight) ? hw_h : reqHeight;
+
+ nsCOMPtr<nsIRunnable> runnable =
+ NS_NewRunnableFunction([screen, reqWidth, reqHeight, producer, wrapper]() {
+ // create a surface (because we're a producer, and we need to
+ // dequeue/queue a buffer)
+ sp<Surface> sur = new Surface(producer);
+ ANativeWindow* window = sur.get();
+ // The closure makes screen const and we can't call forget() on it.
+ RefPtr<nsScreenGonk> screenAlias = screen;
+
+ if (native_window_api_connect(window, NATIVE_WINDOW_API_EGL) != NO_ERROR) {
+ static_cast<GraphicProducerWrapper*>(producer->asBinder().get())->exit(BAD_VALUE);
+ NS_ReleaseOnMainThread(screenAlias.forget());
+ return;
+ }
+ uint32_t usage = GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN |
+ GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_TEXTURE;
+
+ int err = 0;
+ err = native_window_set_buffers_dimensions(window, reqWidth, reqHeight);
+ err |= native_window_set_scaling_mode(window, NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW);
+ err |= native_window_set_buffers_format(window, HAL_PIXEL_FORMAT_RGBA_8888);
+ err |= native_window_set_usage(window, usage);
+
+ status_t result = NO_ERROR;
+ if (err == NO_ERROR) {
+ ANativeWindowBuffer* buffer;
+ result = native_window_dequeue_buffer_and_wait(window, &buffer);
+ if (result == NO_ERROR) {
+ nsresult rv = screen->MakeSnapshot(buffer);
+ if (rv != NS_OK) {
+ result = INVALID_OPERATION;
+ }
+ window->queueBuffer(window, buffer, -1);
+ }
+ } else {
+ result = BAD_VALUE;
+ }
+ native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
+ static_cast<GraphicProducerWrapper*>(producer->asBinder().get())->exit(result);
+ NS_ReleaseOnMainThread(screenAlias.forget());
+ });
+
+ layers::CompositorThreadHolder::Loop()->PostTask(
+ MakeAndAddRef<RunnableCallTask>(runnable));
+}
+
+#if ANDROID_VERSION >= 21
+void
+FakeSurfaceComposer::setPowerMode(const sp<IBinder>& display, int mode)
+{
+}
+
+status_t
+FakeSurfaceComposer::getDisplayConfigs(const sp<IBinder>& display, Vector<DisplayInfo>* configs)
+{
+ if (configs == NULL) {
+ return BAD_VALUE;
+ }
+
+ // Limit DisplayConfigs only to primary display
+ if (!display.get() || display != mPrimaryDisplay) {
+ return NAME_NOT_FOUND;
+ }
+
+ configs->clear();
+ DisplayInfo info = DisplayInfo();
+
+ nsCOMPtr<nsIRunnable> runnable =
+ NS_NewRunnableFunction([&]() {
+ MOZ_ASSERT(NS_IsMainThread());
+ getPrimaryDisplayInfo(&info);
+ });
+ NS_DispatchToMainThread(runnable, NS_DISPATCH_SYNC);
+
+ configs->push_back(info);
+ return NO_ERROR;
+}
+
+status_t
+FakeSurfaceComposer::getDisplayStats(const sp<IBinder>& display, DisplayStatInfo* stats)
+{
+ return INVALID_OPERATION;
+}
+
+int
+FakeSurfaceComposer::getActiveConfig(const sp<IBinder>& display)
+{
+ // Only support primary display.
+ if (display.get() && (display == mPrimaryDisplay)) {
+ return 0;
+ }
+ return INVALID_OPERATION;
+}
+
+status_t
+FakeSurfaceComposer::setActiveConfig(const sp<IBinder>& display, int id)
+{
+ return INVALID_OPERATION;
+}
+
+status_t
+FakeSurfaceComposer::clearAnimationFrameStats()
+{
+ return INVALID_OPERATION;
+}
+
+status_t
+FakeSurfaceComposer::getAnimationFrameStats(FrameStats* outStats) const
+{
+ return INVALID_OPERATION;
+}
+#else
+void
+FakeSurfaceComposer::blank(const sp<IBinder>& display)
+{
+}
+
+void
+FakeSurfaceComposer::unblank(const sp<IBinder>& display)
+{
+}
+
+status_t
+FakeSurfaceComposer::getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info)
+{
+ if (info == NULL) {
+ return BAD_VALUE;
+ }
+
+ // Limit DisplayConfigs only to primary display
+ if (!display.get() || display != mPrimaryDisplay) {
+ return NAME_NOT_FOUND;
+ }
+
+ nsCOMPtr<nsIRunnable> runnable =
+ NS_NewRunnableFunction([&]() {
+ MOZ_ASSERT(NS_IsMainThread());
+ getPrimaryDisplayInfo(info);
+ });
+ NS_DispatchToMainThread(runnable, NS_DISPATCH_SYNC);
+
+ return NO_ERROR;
+}
+#endif
+
+#define VSYNC_EVENT_PHASE_OFFSET_NS 0
+#define SF_VSYNC_EVENT_PHASE_OFFSET_NS 0
+
+void
+FakeSurfaceComposer::getPrimaryDisplayInfo(DisplayInfo* info)
+{
+ MOZ_ASSERT(NS_IsMainThread(), "Must be on main thread.");
+
+ // Implementation mimic android SurfaceFlinger::getDisplayConfigs().
+
+ class Density {
+ static int getDensityFromProperty(char const* propName) {
+ char property[PROPERTY_VALUE_MAX];
+ int density = 0;
+ if (property_get(propName, property, NULL) > 0) {
+ density = atoi(property);
+ }
+ return density;
+ }
+ public:
+ static int getEmuDensity() {
+ return getDensityFromProperty("qemu.sf.lcd_density"); }
+ static int getBuildDensity() {
+ return getDensityFromProperty("ro.sf.lcd_density"); }
+ };
+
+ RefPtr<nsScreenGonk> screen = nsScreenManagerGonk::GetPrimaryScreen();
+
+ float xdpi = screen->GetDpi();
+ float ydpi = screen->GetDpi();
+ int fps = 60; // XXX set a value from hwc hal
+ nsIntRect screenBounds = screen->GetNaturalBounds().ToUnknownRect();
+
+ // The density of the device is provided by a build property
+ float density = Density::getBuildDensity() / 160.0f;
+ if (density == 0) {
+ // the build doesn't provide a density -- this is wrong!
+ // use xdpi instead
+ ALOGE("ro.sf.lcd_density must be defined as a build property");
+ density = xdpi / 160.0f;
+ }
+ info->density = density;
+ info->orientation = screen->EffectiveScreenRotation();
+
+ info->w = screenBounds.width;
+ info->h = screenBounds.height;
+ info->xdpi = xdpi;
+ info->ydpi = ydpi;
+ info->fps = fps;
+#if ANDROID_VERSION >= 21
+ info->appVsyncOffset = VSYNC_EVENT_PHASE_OFFSET_NS;
+
+ // This is how far in advance a buffer must be queued for
+ // presentation at a given time. If you want a buffer to appear
+ // on the screen at time N, you must submit the buffer before
+ // (N - presentationDeadline).
+ //
+ // Normally it's one full refresh period (to give SF a chance to
+ // latch the buffer), but this can be reduced by configuring a
+ // DispSync offset. Any additional delays introduced by the hardware
+ // composer or panel must be accounted for here.
+ //
+ // We add an additional 1ms to allow for processing time and
+ // differences between the ideal and actual refresh rate.
+ info->presentationDeadline =
+ (1e9 / fps) - SF_VSYNC_EVENT_PHASE_OFFSET_NS + 1000000;
+#endif
+ // All non-virtual displays are currently considered secure.
+ info->secure = true;
+}
+
+}; // namespace android