// Copyright 2014 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. #ifndef CONTENT_BROWSER_COMPOSITOR_SOFTWARE_OUTPUT_DEVICE_MAC_H_ #define CONTENT_BROWSER_COMPOSITOR_SOFTWARE_OUTPUT_DEVICE_MAC_H_ #include #include "base/mac/scoped_cftyperef.h" #include "base/macros.h" #include "cc/output/software_output_device.h" #include "third_party/skia/include/core/SkRegion.h" #include "ui/gfx/vsync_provider.h" namespace gfx { class Canvas; } namespace ui { class Compositor; } namespace content { class SoftwareOutputDeviceMac : public cc::SoftwareOutputDevice, public gfx::VSyncProvider { public: explicit SoftwareOutputDeviceMac(ui::Compositor* compositor); ~SoftwareOutputDeviceMac() override; // cc::SoftwareOutputDevice implementation. void Resize(const gfx::Size& pixel_size, float scale_factor) override; SkCanvas* BeginPaint(const gfx::Rect& damage_rect) override; void EndPaint() override; void DiscardBackbuffer() override; void EnsureBackbuffer() override; gfx::VSyncProvider* GetVSyncProvider() override; // gfx::VSyncProvider implementation. void GetVSyncParameters( const gfx::VSyncProvider::UpdateVSyncCallback& callback) override; private: bool EnsureBuffersExist(); // Copy the pixels from the previous buffer to the new buffer. void CopyPreviousBufferDamage(const SkRegion& new_damage_rect); ui::Compositor* compositor_; gfx::Size pixel_size_; float scale_factor_; // This surface is double-buffered. The two buffers are in |io_surfaces_|, // and the index of the current buffer is |current_buffer_|. base::ScopedCFTypeRef io_surfaces_[2]; int current_index_; // The previous frame's damage rectangle. Used to copy unchanged content // between buffers in CopyPreviousBufferDamage. SkRegion previous_buffer_damage_region_; // The SkCanvas wrapps the mapped current IOSurface. It is valid only between // BeginPaint and EndPaint. skia::RefPtr canvas_; gfx::VSyncProvider::UpdateVSyncCallback update_vsync_callback_; DISALLOW_COPY_AND_ASSIGN(SoftwareOutputDeviceMac); }; } // namespace content #endif // CONTENT_BROWSER_COMPOSITOR_SOFTWARE_OUTPUT_DEVICE_MAC_H_