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// 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.
#include <stddef.h>
#include <memory>
#include <vector>
#include "cc/cc_export.h"
#include "cc/debug/rendering_stats_instrumentation.h"
#include "cc/layers/recording_source.h"
#include "cc/paint/image_id.h"
#include "gpu/command_buffer/client/raster_interface.h"
#include "third_party/skia/include/core/SkPicture.h"
#include "ui/gfx/color_space.h"
namespace gfx {
class AxisTransform2d;
} // namespace gfx
namespace cc {
class DisplayItemList;
class DrawImage;
class ImageProvider;
class CC_EXPORT RasterSource : public base::RefCountedThreadSafe<RasterSource> {
struct CC_EXPORT PlaybackSettings {
PlaybackSettings(const PlaybackSettings&);
// If set to true, we should use LCD text.
bool use_lcd_text = true;
ImageProvider* image_provider = nullptr;
RasterSource(const RasterSource&) = delete;
RasterSource& operator=(const RasterSource&) = delete;
// Helper function to apply a few common operations before passing the canvas
// to the shorter version. This is useful for rastering into tiles.
// canvas is expected to be backed by a tile, with a default state.
// raster_transform will be applied to the display list, rastering the list
// into the "content space".
// canvas_bitmap_rect defines the extent of the tile in the content space,
// i.e. contents in the rect will be cropped and translated onto the canvas.
// canvas_playback_rect can be used to replay only part of the recording in,
// the content space, so only a sub-rect of the tile gets rastered.
void PlaybackToCanvas(SkCanvas* canvas,
const gfx::Size& content_size,
const gfx::Rect& canvas_bitmap_rect,
const gfx::Rect& canvas_playback_rect,
const gfx::AxisTransform2d& raster_transform,
const PlaybackSettings& settings) const;
// Raster this RasterSource into the given canvas. Canvas states such as
// CTM and clip region will be respected. This function will replace pixels
// in the clip region without blending.
// Virtual for testing.
// Note that this should only be called after the image decode controller has
// been set, which happens during commit.
virtual void PlaybackToCanvas(SkCanvas* canvas,
ImageProvider* image_provider) const;
// Returns whether the given rect at given scale is of solid color in
// this raster source, as well as the solid color value.
bool PerformSolidColorAnalysis(gfx::Rect content_rect, SkColor* color) const;
// Returns true iff the whole raster source is of solid color.
bool IsSolidColor() const;
// Returns the color of the raster source if it is solid color. The results
// are unspecified if IsSolidColor returns false.
SkColor GetSolidColor() const;
// Returns the recorded layer size of this raster source.
gfx::Size GetSize() const;
// Returns the content size of this raster source at a particular scale.
gfx::Size GetContentSize(float content_scale) const;
// Populate the given list with all images that may overlap the given
// rect in layer space.
void GetDiscardableImagesInRect(const gfx::Rect& layer_rect,
std::vector<const DrawImage*>* images) const;
// Return true iff this raster source can raster the given rect in layer
// space.
bool CoversRect(const gfx::Rect& layer_rect) const;
// Returns true if this raster source has anything to rasterize.
virtual bool HasRecordings() const;
// Valid rectangle in which everything is recorded and can be rastered from.
virtual gfx::Rect RecordedViewport() const;
// Tracing functionality.
virtual void DidBeginTracing();
virtual void AsValueInto(base::trace_event::TracedValue* array) const;
virtual sk_sp<SkPicture> GetFlattenedPicture();
virtual size_t GetMemoryUsage() const;
const scoped_refptr<DisplayItemList>& GetDisplayItemList() const {
return display_list_;
std::vector<scoped_refptr<PaintWorkletInput>> GetPaintWorkletInputs() const;
float recording_scale_factor() const { return recording_scale_factor_; }
SkColor background_color() const { return background_color_; }
bool requires_clear() const { return requires_clear_; }
base::flat_map<PaintImage::Id, PaintImage::DecodingMode>
size_t* max_op_size_hint() { return &max_op_size_hint_; }
// RecordingSource is the only class that can create a raster source.
friend class RecordingSource;
friend class base::RefCountedThreadSafe<RasterSource>;
explicit RasterSource(const RecordingSource* other);
virtual ~RasterSource();
void ClearForOpaqueRaster(SkCanvas* raster_canvas,
const gfx::Size& content_size,
const gfx::Rect& canvas_bitmap_rect,
const gfx::Rect& canvas_playback_rect) const;
// The serialized size for the largest op in this RasterSource. This is
// accessed only on the raster threads with the context lock acquired.
size_t max_op_size_hint_ =
// These members are const as this raster source may be in use on another
// thread and so should not be touched after construction.
const scoped_refptr<DisplayItemList> display_list_;
const size_t painter_reported_memory_usage_;
const SkColor background_color_;
const bool requires_clear_;
const bool is_solid_color_;
const SkColor solid_color_;
const gfx::Rect recorded_viewport_;
const gfx::Size size_;
const int slow_down_raster_scale_factor_for_debug_;
const float recording_scale_factor_;
} // namespace cc