widget/android/AndroidCompositorWidget.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set sw=2 ts=2 et tw=80 : */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "AndroidCompositorWidget.h"
   8
   9 #include "mozilla/gfx/Logging.h"
  10 #include "mozilla/widget/PlatformWidgetTypes.h"
  11 #include "nsWindow.h"
  12 #include "SurfaceViewWrapperSupport.h"
  13
  14 namespace mozilla {
  15 namespace widget {
  16
  17 AndroidCompositorWidget::AndroidCompositorWidget(
  18     const AndroidCompositorWidgetInitData& aInitData,
  19     const layers::CompositorOptions& aOptions)
  20     : CompositorWidget(aOptions),
  21       mWidgetId(aInitData.widgetId()),
  22       mNativeWindow(nullptr),
  23       mFormat(WINDOW_FORMAT_RGBA_8888),
  24       mClientSize(aInitData.clientSize()) {}
  25
  26 AndroidCompositorWidget::~AndroidCompositorWidget() {
  27   if (mNativeWindow) {
  28     ANativeWindow_release(mNativeWindow);
  29   }
  30 }
  31
  32 already_AddRefed<gfx::DrawTarget>
  33 AndroidCompositorWidget::StartRemoteDrawingInRegion(
  34     const LayoutDeviceIntRegion& aInvalidRegion,
  35     layers::BufferMode* aBufferMode) {
  36   if (!mNativeWindow) {
  37     EGLNativeWindowType window = GetEGLNativeWindow();
  38     JNIEnv* const env = jni::GetEnvForThread();
  39     mNativeWindow =
  40         ANativeWindow_fromSurface(env, reinterpret_cast<jobject>(window));
  41     if (mNativeWindow) {
  42       mFormat = ANativeWindow_getFormat(mNativeWindow);
  43       ANativeWindow_acquire(mNativeWindow);
  44     } else {
  45       return nullptr;
  46     }
  47   }
  48
  49   if (mFormat != WINDOW_FORMAT_RGBA_8888 &&
  50       mFormat != WINDOW_FORMAT_RGBX_8888) {
  51     gfxCriticalNoteOnce << "Non supported format: " << mFormat;
  52     return nullptr;
  53   }
  54
  55   // XXX Handle inOutDirtyBounds
  56   if (ANativeWindow_lock(mNativeWindow, &mBuffer, nullptr) != 0) {
  57     return nullptr;
  58   }
  59
  60   const int bpp = 4;
  61   gfx::SurfaceFormat format = gfx::SurfaceFormat::R8G8B8A8;
  62   if (mFormat == WINDOW_FORMAT_RGBX_8888) {
  63     format = gfx::SurfaceFormat::R8G8B8X8;
  64   }
  65
  66   RefPtr<gfx::DrawTarget> dt = gfx::Factory::CreateDrawTargetForData(
  67       gfx::BackendType::SKIA, static_cast<unsigned char*>(mBuffer.bits),
  68       gfx::IntSize(mBuffer.width, mBuffer.height), mBuffer.stride * bpp, format,
  69       true);
  70
  71   return dt.forget();
  72 }
  73
  74 void AndroidCompositorWidget::EndRemoteDrawingInRegion(
  75     gfx::DrawTarget* aDrawTarget, const LayoutDeviceIntRegion& aInvalidRegion) {
  76   ANativeWindow_unlockAndPost(mNativeWindow);
  77 }
  78
  79 bool AndroidCompositorWidget::OnResumeComposition() {
  80   OnCompositorSurfaceChanged();
  81
  82   if (!mSurface) {
  83     gfxCriticalError() << "OnResumeComposition called with null Surface";
  84     return false;
  85   }
  86
  87   // If our Surface is in an abandoned state then we will never succesfully
  88   // create an EGL Surface, and will eventually crash. Better to explicitly
  89   // crash now.
  90   if (SurfaceViewWrapperSupport::IsSurfaceAbandoned(mSurface)) {
  91     MOZ_CRASH("Compositor resumed with abandoned Surface");
  92   }
  93
  94   return true;
  95 }
  96
  97 EGLNativeWindowType AndroidCompositorWidget::GetEGLNativeWindow() {
  98   return (EGLNativeWindowType)mSurface.Get();
  99 }
 100
 101 LayoutDeviceIntSize AndroidCompositorWidget::GetClientSize() {
 102   return mClientSize;
 103 }
 104
 105 void AndroidCompositorWidget::NotifyClientSizeChanged(
 106     const LayoutDeviceIntSize& aClientSize) {
 107   mClientSize =
 108       LayoutDeviceIntSize(std::min(aClientSize.width, MOZ_WIDGET_MAX_SIZE),
 109                           std::min(aClientSize.height, MOZ_WIDGET_MAX_SIZE));
 110 }
 111
 112 }  // namespace widget
 113 }  // namespace mozilla