Skwasm::DlWimpImageFromPixels Class Reference

Inheritance diagram for Skwasm::DlWimpImageFromPixels:

Public Member Functions
	DlWimpImageFromPixels (int width, int height, sk_sp< SkData > data, Skwasm::PixelFormat format, size_t row_byte_count)
std::shared_ptr< impeller::Texture >	GetImpellerTexture (const std::shared_ptr< impeller::Context > &context) const override
Public Member Functions inherited from Skwasm::DlWimpImageBase
	DlWimpImageBase (int width, int height)
bool	isOpaque () const override
	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.
bool	isUIThreadSafe () const override
	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.
flutter::DlColorSpace	GetColorSpace () const override
	Gets the color space of the image.
virtual	~DlWimpImageBase ()
flutter::DlISize	GetSize () const override
size_t	GetApproximateByteSize () const override
Public Member Functions inherited from impeller::DlImageImpeller
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.
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.
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

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...
Static Public Member Functions inherited from impeller::DlImageImpeller
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)
Protected Member Functions inherited from flutter::DlImage
	DlImage ()
Protected Attributes inherited from Skwasm::DlWimpImageBase
int	width_
int	height_

Detailed Description

Definition at line 110 of file images_impeller.cc.

Constructor & Destructor Documentation

DlWimpImageFromPixels()

Skwasm::DlWimpImageFromPixels::DlWimpImageFromPixels ( int  width, int  height, sk_sp< SkData >  data, Skwasm::PixelFormat  format, size_t  row_byte_count  )

inline

Definition at line 112 of file images_impeller.cc.

      : DlWimpImageBase(width, height),
        data_(std::move(data)),
        format_(format),
        row_byte_count_(row_byte_count) {}

References format.

Member Function Documentation

GetImpellerTexture()

std::shared_ptr< impeller::Texture > Skwasm::DlWimpImageFromPixels::GetImpellerTexture ( const std::shared_ptr< impeller::Context > &  context ) const

inlineoverridevirtual

Reimplemented from Skwasm::DlWimpImageBase.

Definition at line 122 of file images_impeller.cc.

                                                                    {
    impeller::TextureDescriptor desc;
    desc.size = impeller::ISize(width_, height_);
 
    if (format_ == Skwasm::PixelFormat::bgra8888) {
      desc.format = impeller::PixelFormat::kB8G8R8A8UNormInt;
    } else if (format_ == Skwasm::PixelFormat::rgba8888) {
      desc.format = impeller::PixelFormat::kR8G8B8A8UNormInt;
    } else {
      desc.format = impeller::PixelFormat::kR8G8B8A8UNormInt;  // fallback
    }
 
    desc.mip_count = 1;
    desc.type = impeller::TextureType::kTexture2D;
    desc.usage = static_cast<impeller::TextureUsageMask>(
        impeller::TextureUsage::kShaderRead);
 
    auto texture = context->GetResourceAllocator()->CreateTexture(desc);
    if (!texture) {
      return nullptr;
    }
 
    if (!texture->SetContents(static_cast<const uint8_t*>(data_->bytes()),
                              data_->size(), 0)) {
      return nullptr;
    }
    return texture;
  }

References Skwasm::bgra8888, impeller::TextureDescriptor::format, Skwasm::DlWimpImageBase::height_, impeller::kB8G8R8A8UNormInt, impeller::kR8G8B8A8UNormInt, impeller::kShaderRead, impeller::kTexture2D, impeller::TextureDescriptor::mip_count, Skwasm::rgba8888, impeller::TextureDescriptor::size, texture, impeller::TextureDescriptor::type, impeller::TextureDescriptor::usage, and Skwasm::DlWimpImageBase::width_.

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

• skwasm/images_impeller.cc