Struct CVOpenGLTextureCache 

pub struct CVOpenGLTextureCache { /* private fields */ }

Available on crate feature CVOpenGLTextureCache only.

CoreVideo OpenGL Texture Cache

See also Apple’s documentation

Implementations

impl CVOpenGLTextureCache

pub unsafe fn create( allocator: Option<&CFAllocator>, cache_attributes: Option<&CFDictionary>, cgl_context: CGLContextObj, cgl_pixel_format: CGLPixelFormatObj, texture_attributes: Option<&CFDictionary>, cache_out: NonNull<*mut CVOpenGLTextureCache>, ) -> CVReturn

👎Deprecated: OpenGL/OpenGLES is no longer supported. Use Metal APIs instead. (Define COREVIDEO_SILENCE_GL_DEPRECATION to silence these warnings)

Available on crate feature CVReturn and crate feature objc2-open-gl and macOS only.

Creates a new Texture Cache.

Parameter allocator: The CFAllocatorRef to use for allocating the cache. May be NULL.

Parameter cacheAttributes: A CFDictionaryRef containing the attributes of the cache itself. May be NULL.

Parameter cglContext: The OpenGL context into which the texture objects will be created

Parameter cglPixelFormat: The OpenGL pixel format object used to create the passed in OpenGL context

Parameter textureAttributes: A CFDictionaryRef containing the attributes to be used for creating the CVOpenGLTexture objects. May be NULL.

Parameter cacheOut: The newly created texture cache will be placed here

Returns: Returns kCVReturnSuccess on success

Safety

• cache_attributes generics must be of the correct type.
• cgl_context must be a valid pointer.
• cgl_pixel_format must be a valid pointer.
• texture_attributes generics must be of the correct type.
• cache_out must be a valid pointer.

pub unsafe fn create_texture_from_image( allocator: Option<&CFAllocator>, texture_cache: &CVOpenGLTextureCache, source_image: &CVImageBuffer, attributes: Option<&CFDictionary>, texture_out: NonNull<*mut CVOpenGLTexture>, ) -> CVReturn

👎Deprecated: OpenGL/OpenGLES is no longer supported. Use Metal APIs instead. (Define COREVIDEO_SILENCE_GL_DEPRECATION to silence these warnings)

Available on crate features CVBuffer and CVImageBuffer and CVOpenGLTexture and CVReturn only.

Creates a CVOpenGLTexture object from an existing CVImageBuffer

Parameter allocator: The CFAllocatorRef to use for allocating the CVOpenGLTexture object. May be NULL.

Parameter textureCache: The texture cache object that will manage the texture

Parameter sourceImage: The CVImageBuffer that you want to create a CVOpenGLTexture from.

Parameter attributes: For Future use only! - The desired buffer attributes for the CVOpenGLTexture.

Parameter textureOut: The newly created texture object will be placed here.

Returns: Returns kCVReturnSuccess on success

Safety

• attributes generics must be of the correct type.
• texture_out must be a valid pointer.

pub fn flush(&self, options: CVOptionFlags)

👎Deprecated: OpenGL/OpenGLES is no longer supported. Use Metal APIs instead. (Define COREVIDEO_SILENCE_GL_DEPRECATION to silence these warnings)

Available on crate feature CVBase only.

Performs internal housekeeping/recycling operations

This call must be made periodically to give the texture cache a chance to make OpenGL calls on the OpenGL context used to create it in order to do housekeeping operations.

Parameter textureCache: The texture cache object to flush

Parameter options: Currently unused, set to 0.

Returns: Returns kCVReturnSuccess on success

Methods from Deref<Target = CFType>

pub fn downcast_ref<T>(&self) -> Option<&T>

where T: ConcreteType,

Attempt to downcast the type to that of type T.

This is the reference-variant. Use CFRetained::downcast if you want to convert a retained type. See also ConcreteType for more details on which types support being converted to.

pub fn retain_count(&self) -> usize

Get the reference count of the object.

This function may be useful for debugging. You normally do not use this function otherwise.

Beware that some things (like CFNumbers, small CFStrings etc.) may not have a normal retain count for optimization purposes, and can return usize::MAX in that case.

Trait Implementations

impl AsRef<AnyObject> for CVOpenGLTextureCache

fn as_ref(&self) -> &AnyObject

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<CFType> for CVOpenGLTextureCache

fn as_ref(&self) -> &CFType

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<CVOpenGLTextureCache> for CVOpenGLTextureCache

fn as_ref(&self) -> &Self

Converts this type into a shared reference of the (usually inferred) input type.

impl Borrow<AnyObject> for CVOpenGLTextureCache

fn borrow(&self) -> &AnyObject

Immutably borrows from an owned value.

impl Borrow<CFType> for CVOpenGLTextureCache

fn borrow(&self) -> &CFType

Immutably borrows from an owned value.

impl ConcreteType for CVOpenGLTextureCache

fn type_id() -> CFTypeID

Get the unique CFTypeID identifier for the type.

impl Debug for CVOpenGLTextureCache

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Deref for CVOpenGLTextureCache

type Target = CFType

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl Hash for CVOpenGLTextureCache

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Message for CVOpenGLTextureCache

fn retain(&self) -> Retained<Self>

where Self: Sized,

Increment the reference count of the receiver.

impl PartialEq for CVOpenGLTextureCache

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl RefEncode for CVOpenGLTextureCache

const ENCODING_REF: Encoding

The Objective-C type-encoding for a reference of this type.

impl Type for CVOpenGLTextureCache

fn retain(&self) -> CFRetained<Self>

where Self: Sized,

Increment the reference count of the receiver.

fn as_concrete_TypeRef(&self) -> &Self

👎Deprecated: this is redundant

Helper for easier transition from the core-foundation crate.

unsafe fn wrap_under_get_rule(ptr: *const Self) -> CFRetained<Self>

where Self: Sized,

👎Deprecated: use CFRetained::retain

Helper for easier transition from the core-foundation crate.

fn as_CFTypeRef(&self) -> &CFType

where Self: AsRef<CFType>,

👎Deprecated: this is redundant (CF types deref to CFType)

Helper for easier transition from the core-foundation crate.

unsafe fn wrap_under_create_rule(ptr: *const Self) -> CFRetained<Self>

where Self: Sized,

👎Deprecated: use CFRetained::from_raw

Helper for easier transition from the core-foundation crate.

impl Eq for CVOpenGLTextureCache