#include <dl_image_impeller.h>

Inheritance diagram for impeller::DlImageImpeller:

Public Member Functions
Type	GetImageType () const override
	Returns the backend type of this image.

const DlImageImpeller *	asImpellerImage () const override
	Safe downcast to DlImageImpeller.

bool	isTextureBacked () const override
	Returns true if the image is backed by a GPU texture.

virtual std::shared_ptr< Texture >	GetImpellerTexture (const std::shared_ptr< Context > &context) const =0

std::shared_ptr< Texture >	GetCachedTexture (const ContentContext &renderer) const

Public Member Functions inherited from flutter::DlImage
virtual	~DlImage ()

virtual const DlImageSkia *	asSkiaImage () const
	Safe downcast to DlImageSkia.

virtual DlColorSpace	GetColorSpace () const =0
	Gets the color space of the image.

virtual bool	isOpaque () const =0
	If the pixel format of this image ignores alpha, this returns true. This method might conservatively return false when it cannot guarnatee an opaque image, for example when the pixel format of the image supports alpha but the image is made up of entirely opaque pixels.

virtual bool	isUIThreadSafe () const =0
	If the underlying platform image held by this object has no threading requirements for the release of that image (or if arrangements have already been made to forward that image to the correct thread upon deletion), this method returns true.

virtual DlISize	GetSize () const =0

virtual size_t	GetApproximateByteSize () const =0

int	width () const

int	height () const

DlIRect	GetBounds () const

virtual OwningContext	owning_context () const

virtual std::optional< std::string >	get_error () const

bool	Equals (const DlImage *other) const

bool	Equals (const DlImage &other) const

bool	Equals (const sk_sp< const DlImage > &other) const

Static Public Member Functions
static sk_sp< DlImageImpeller >	Make (std::shared_ptr< Texture > texture, OwningContext owning_context=OwningContext::kIO)

static sk_sp< DlImageImpeller >	MakeFromYUVTextures (AiksContext *aiks_context, std::shared_ptr< Texture > y_texture, std::shared_ptr< Texture > uv_texture, YUVColorSpace yuv_color_space)

Additional Inherited Members
Public Types inherited from flutter::DlImage
enum class	OwningContext { kRaster , kIO }

enum class	Type { kSkia , kImpeller }
	The backend type of this image. More...

Protected Member Functions inherited from flutter::DlImage
	DlImage ()

Detailed Description

Definition at line 17 of file dl_image_impeller.h.

Member Function Documentation

◆ asImpellerImage()

const DlImageImpeller * impeller::DlImageImpeller::asImpellerImage ( ) const

inlineoverridevirtual

Safe downcast to DlImageImpeller.

Returns: A pointer to DlImageImpeller or null if not an Impeller image.

Reimplemented from flutter::DlImage.

Definition at line 23 of file dl_image_impeller.h.

23{ return this; }

◆ GetCachedTexture()

std::shared_ptr< Texture > impeller::DlImageImpeller::GetCachedTexture ( const ContentContext & renderer ) const

Definition at line 54 of file dl_image_impeller.cc.

                                          {
  auto texture = renderer.GetCachedTexture(this);
  if (texture) {
    return texture;
  }
  texture = GetImpellerTexture(renderer.GetContext());
  renderer.SetCachedTexture(this, texture);
  return texture;
}

References impeller::ContentContext::GetCachedTexture(), impeller::ContentContext::GetContext(), GetImpellerTexture(), impeller::ContentContext::SetCachedTexture(), and texture.

◆ GetImageType()

Type impeller::DlImageImpeller::GetImageType ( ) const

inlineoverridevirtual

Returns the backend type of this image.

Returns: The image type.

Implements flutter::DlImage.

Definition at line 20 of file dl_image_impeller.h.

20{ return Type::kImpeller; }

flutter::DlImage::Type::kImpeller

@ kImpeller

References flutter::DlImage::kImpeller.

◆ GetImpellerTexture()

virtual std::shared_ptr< Texture > impeller::DlImageImpeller::GetImpellerTexture ( const std::shared_ptr< Context > & context ) const

pure virtual

Implemented in impeller::DlImageImpellerTexture, Skwasm::DlWimpImageBase, Skwasm::DlWimpImageFromTexture, Skwasm::DlWimpImageFromPixels, and Skwasm::DlWimpImageFromPicture.

Referenced by GetCachedTexture().

◆ isTextureBacked()

bool impeller::DlImageImpeller::isTextureBacked ( ) const

inlineoverridevirtual

Returns true if the image is backed by a GPU texture.

Implements flutter::DlImage.

Definition at line 26 of file dl_image_impeller.h.

26{ return true; }

◆ Make()

sk_sp< DlImageImpeller > impeller::DlImageImpeller::Make	(	std::shared_ptr< Texture >	texture,
		OwningContext	owning_context = `OwningContext::kIO`
	)

static

Definition at line 12 of file dl_image_impeller.cc.

                                                                           {
  if (!texture) {
    return nullptr;
  }
  return sk_make_sp<DlImageImpellerTexture>(std::move(texture), owning_context);
}

References flutter::DlImage::owning_context(), and texture.

◆ MakeFromYUVTextures()

sk_sp< DlImageImpeller > impeller::DlImageImpeller::MakeFromYUVTextures	(	AiksContext *	aiks_context,
		std::shared_ptr< Texture >	y_texture,
		std::shared_ptr< Texture >	uv_texture,
		YUVColorSpace	yuv_color_space
	)

static

Definition at line 20 of file dl_image_impeller.cc.

                                   {
  if (!aiks_context || !y_texture || !uv_texture) {
    return nullptr;
  }
  auto yuv_to_rgb_filter_contents = FilterContents::MakeYUVToRGBFilter(
      std::move(y_texture), std::move(uv_texture), yuv_color_space);
  impeller::Entity entity;
  entity.SetBlendMode(impeller::BlendMode::kSrc);
 
  // Disable the render target cache so that this snapshot's texture will not
  // be reused later by other operations.
  const auto& renderer = aiks_context->GetContentContext();
  renderer.GetRenderTargetCache()->DisableCache();
  fml::ScopedCleanupClosure restore_cache(
      [&] { renderer.GetRenderTargetCache()->EnableCache(); });
 
  std::optional<Snapshot> snapshot =
      yuv_to_rgb_filter_contents->RenderToSnapshot(
          renderer, entity,
          {.coverage_limit = std::nullopt,
           .sampler_descriptor = std::nullopt,
           .msaa_enabled = true,
           .mip_count = 1,
           .label = "MakeYUVToRGBFilter Snapshot"});
  if (!snapshot.has_value()) {
    return nullptr;
  }
  return impeller::DlImageImpeller::Make(snapshot->texture);
}

References impeller::AiksContext::GetContentContext(), impeller::ContentContext::GetRenderTargetCache(), impeller::kSrc, Make(), impeller::FilterContents::MakeYUVToRGBFilter(), and impeller::Entity::SetBlendMode().

The documentation for this class was generated from the following files:

impeller/display_list/dl_image_impeller.h
impeller/display_list/dl_image_impeller.cc

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ asImpellerImage()

◆ GetCachedTexture()

◆ GetImageType()

◆ GetImpellerTexture()

◆ isTextureBacked()

◆ Make()

◆ MakeFromYUVTextures()