Implement common Ozone interface for Chromecast.

chromecast/ozone/surface_factory_cast.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chromecast/ozone/surface_factory_cast.h"
+
+#include "base/callback_helpers.h"
+#include "chromecast/ozone/cast_egl_platform.h"
+#include "chromecast/ozone/surface_ozone_egl_cast.h"
+
+namespace chromecast {
+namespace ozone {
+
+SurfaceFactoryCast::SurfaceFactoryCast(scoped_ptr<CastEglPlatform> egl_platform)
+    : state_(kUninitialized),
+      destroy_window_pending_state_(kNoDestroyPending),
+      display_type_(0),
+      window_(0),
+      default_display_size_(egl_platform->GetDefaultDisplaySize()),
+      display_size_(default_display_size_),
+      new_display_size_(default_display_size_),
+      egl_platform_(egl_platform.Pass()) {
+}
+
+SurfaceFactoryCast::~SurfaceFactoryCast() {
+  DestroyDisplayTypeAndWindow();
+}
+
+void SurfaceFactoryCast::InitializeHardware() {
+  if (state_ == kInitialized) {
+    return;
+  }
+  CHECK_EQ(state_, kUninitialized);
+
+  if (egl_platform_->InitializeHardware()) {
+    state_ = kInitialized;
+  } else {
+    ShutdownHardware();
+    state_ = kFailed;
+  }
+}
+
+void SurfaceFactoryCast::ShutdownHardware() {
+  DestroyDisplayTypeAndWindow();
+
+  egl_platform_->ShutdownHardware();
+
+  state_ = kUninitialized;
+}
+
+intptr_t SurfaceFactoryCast::GetNativeDisplay() {
+  CreateDisplayTypeAndWindowIfNeeded();
+  return reinterpret_cast<intptr_t>(display_type_);
+}
+
+void SurfaceFactoryCast::CreateDisplayTypeAndWindowIfNeeded() {
+  if (state_ == kUninitialized) {
+    InitializeHardware();
+  }
+  if (new_display_size_ != display_size_) {
+    DestroyDisplayTypeAndWindow();
+    display_size_ = new_display_size_;
+  }
+  DCHECK_EQ(state_, kInitialized);
+  if (!display_type_) {
+    display_type_ = egl_platform_->CreateDisplayType(display_size_);
+    if (display_type_) {
+      window_ = egl_platform_->CreateWindow(display_type_, display_size_);
+      if (!window_) {
+        DestroyDisplayTypeAndWindow();
+        state_ = kFailed;
+        LOG(FATAL) << "Create EGLNativeWindowType(" << display_size_.ToString()
+                   << ") failed.";
+      }
+    } else {
+      state_ = kFailed;
+      LOG(FATAL) << "Create EGLNativeDisplayType(" << display_size_.ToString()
+                 << ") failed.";
+    }
+  }
+}
+
+intptr_t SurfaceFactoryCast::GetNativeWindow() {
+  CreateDisplayTypeAndWindowIfNeeded();
+  return window_;
+}
+
+bool SurfaceFactoryCast::ResizeDisplay(gfx::Size size) {
+  // set size to at least 1280x720 even if passed 1x1
+  size.SetToMax(default_display_size_);
+  if (display_type_ && size != display_size_) {
+    DestroyDisplayTypeAndWindow();
+  }
+  display_size_ = size;
+  return true;
+}
+
+void SurfaceFactoryCast::DestroyDisplayTypeAndWindow() {
+  if (window_) {
+    egl_platform_->DestroyWindow(window_);
+    window_ = 0;
+  }
+  if (display_type_) {
+    egl_platform_->DestroyDisplayType(display_type_);
+    display_type_ = 0;
+  }
+}
+
+scoped_ptr<ui::SurfaceOzoneEGL> SurfaceFactoryCast::CreateEGLSurfaceForWidget(
+    gfx::AcceleratedWidget widget) {
+  new_display_size_ = gfx::Size(widget >> 16, widget & 0xFFFF);
+  new_display_size_.SetToMax(default_display_size_);
+  destroy_window_pending_state_ = kSurfaceExists;
+  SendRelinquishResponse();
+  return make_scoped_ptr<ui::SurfaceOzoneEGL>(new SurfaceOzoneEglCast(this));
+}
+
+void SurfaceFactoryCast::SetToRelinquishDisplay(const base::Closure& callback) {
+  // This is called in response to a RelinquishDisplay message from the
+  // browser task. This call may come before or after the display surface
+  // is actually destroyed.
+  relinquish_display_callback_ = callback;
+  switch (destroy_window_pending_state_) {
+    case kNoDestroyPending:
+    case kSurfaceDestroyedRecently:
+      DestroyDisplayTypeAndWindow();
+      SendRelinquishResponse();
+      destroy_window_pending_state_ = kNoDestroyPending;
+      break;
+    case kSurfaceExists:
+      destroy_window_pending_state_ = kWindowDestroyPending;
+      break;
+    case kWindowDestroyPending:
+      break;
+    default:
+      NOTREACHED();
+  }
+}
+
+void SurfaceFactoryCast::ChildDestroyed() {
+  if (destroy_window_pending_state_ == kWindowDestroyPending) {
+    DestroyDisplayTypeAndWindow();
+    SendRelinquishResponse();
+    destroy_window_pending_state_ = kNoDestroyPending;
+  } else {
+    destroy_window_pending_state_ = kSurfaceDestroyedRecently;
+  }
+}
+
+void SurfaceFactoryCast::SendRelinquishResponse() {
+  if (!relinquish_display_callback_.is_null()) {
+    base::ResetAndReturn(&relinquish_display_callback_).Run();
+  }
+}
+
+const int32* SurfaceFactoryCast::GetEGLSurfaceProperties(
+    const int32* desired_list) {
+  return egl_platform_->GetEGLSurfaceProperties(desired_list);
+}
+
+bool SurfaceFactoryCast::LoadEGLGLES2Bindings(
+    AddGLLibraryCallback add_gl_library,
+    SetGLGetProcAddressProcCallback set_gl_get_proc_address) {
+  if (state_ != kInitialized) {
+    InitializeHardware();
+    if (state_ != kInitialized) {
+      return false;
+    }
+  }
+
+  return egl_platform_->LoadEGLGLES2Bindings(add_gl_library,
+                                             set_gl_get_proc_address);
+}
+
+}  // namespace ozone
+}  // namespace chromecast