corevideo

func CVBufferCopyAttachment ¶

func CVBufferCopyAttachment(buffer unsafe.Pointer, key unsafe.Pointer, attachmentMode *CVAttachmentMode) unsafe.Pointer

@function CVBufferCopyAttachment @abstract Returns a retained specific attachment of a CVBuffer object. It is the caller’s responsibility to release the returned value. @discussion You can attach any CF object to a CVBuffer object to store additional information. CVBufferCopyAttachment retrieves a retained attachment identified by a key. @param buffer Target CVBuffer object. @param key Key in form of a CFString identifying the desired attachment. @param attachmentMode Returns the mode of the attachment, if desired. May be NULL. @result If found the attachment object, return the value; otherwize, return NULL.

func CVBufferCopyAttachments ¶

func CVBufferCopyAttachments(buffer unsafe.Pointer, attachmentMode CVAttachmentMode) unsafe.Pointer

@function CVBufferCopyAttachments @abstract Returns a copy of all attachments of a CVBuffer object. It is the caller’s responsibility to release the returned dictionary. @discussion CVBufferCopyAttachments is a convenience call that returns a copy of all attachments with their corresponding keys in a CFDictionary. @param buffer Target CVBuffer object. @result A CFDictionary with all buffer attachments identified by their keys. If no attachment is present or invalid attachment mode, returns NULL

func CVBufferGetAttachment ¶

func CVBufferGetAttachment(buffer unsafe.Pointer, key unsafe.Pointer, attachmentMode *CVAttachmentMode) unsafe.Pointer

@function CVBufferGetAttachment @abstract Returns a specific attachment of a CVBuffer object @discussion You can attach any CF object to a CVBuffer object to store additional information. CVBufferGetAttachment retrieves an attachement identified by a key. @param buffer Target CVBuffer object. @param key Key in form of a CFString identifying the desired attachment. @param attachmentMode Returns the mode of the attachment, if desired. May be NULL. @result If found the attachment object Deprecated: since macOS 12.0.

func CVBufferGetAttachments ¶

func CVBufferGetAttachments(buffer unsafe.Pointer, attachmentMode CVAttachmentMode) unsafe.Pointer

@function CVBufferGetAttachments @abstract Returns all attachments of a CVBuffer object @discussion CVBufferGetAttachments is a convenience call that returns all attachments with their corresponding keys in a CFDictionary. @param buffer Target CVBuffer object. @result A CFDictionary with all buffer attachments identified by there keys. If no attachment is present, the dictionary is empty. Returns NULL for invalid attachment mode. Deprecated: since macOS 12.0.

func CVBufferHasAttachment ¶

func CVBufferHasAttachment(buffer unsafe.Pointer, key unsafe.Pointer) uint8

@function CVBufferHasAttachment @abstract Returns true if an attachment with the passed key is present on a CVBuffer object. @param buffer Target CVBuffer object. @param key Key in form of a CFString identifying the desired attachment. @result True if an attachment with this key is present, otherwise false.

func CVBufferPropagateAttachments ¶

func CVBufferPropagateAttachments(sourceBuffer unsafe.Pointer, destinationBuffer unsafe.Pointer)

@function CVBufferPropagateAttachments @abstract Copy all propagatable attachments from one buffer to another. @discussion CVBufferPropagateAttachments is a convenience call that copies all attachments with a mode of kCVAttachmentMode_ShouldPropagate from one buffer to another. @param sourceBuffer CVBuffer to copy attachments from. @param destinationBuffer CVBuffer to copy attachments to.

func CVBufferRelease ¶

func CVBufferRelease(buffer unsafe.Pointer)

@function CVBufferRelease @abstract Release a CVBuffer object @discussion Like CFRetain CVBufferRetain decrements the retain count of a CVBuffer object. If that count consequently becomes zero the memory allocated to the object is deallocated and the object is destroyed. In contrast to the CF call it is NULL safe. @param buffer A CVBuffer object that you want to release.

func CVBufferRemoveAllAttachments ¶

func CVBufferRemoveAllAttachments(buffer unsafe.Pointer)

@function CVBufferRemoveAllAttachments @abstract Removes all attachments of a CVBuffer object @discussion While CVBufferRemoveAttachment removes a specific attachement identified by a key CVBufferRemoveAllAttachments removes all attachments of a buffer and decrements their retain counts. @param buffer Target CVBuffer object.

func CVBufferRemoveAttachment ¶

func CVBufferRemoveAttachment(buffer unsafe.Pointer, key unsafe.Pointer)

@function CVBufferRemoveAttachment @abstract Removes a specific attachment of a CVBuffer object @discussion CVBufferRemoveAttachment removes an attachement identified by a key. If found the attachement is removed and the retain count decremented. @param buffer Target CVBuffer object. @param key Key in form of a CFString identifying the desired attachment.

func CVBufferRetain ¶

func CVBufferRetain(buffer unsafe.Pointer) unsafe.Pointer

@function CVBufferRetain @abstract Retains a CVBuffer object @discussion Like CFRetain CVBufferRetain increments the retain count of a CVBuffer object. In contrast to the CF call it is NULL safe. @param buffer A CVBuffer object that you want to retain. @result A CVBuffer object that is the same as the passed in buffer.

func CVBufferSetAttachment ¶

func CVBufferSetAttachment(buffer unsafe.Pointer, key unsafe.Pointer, value unsafe.Pointer, attachmentMode CVAttachmentMode)

@function CVBufferSetAttachment @abstract Sets or adds a attachment of a CVBuffer object @discussion You can attach any CF object to a CVBuffer object to store additional information. CVBufferGetAttachment stores an attachement identified by a key. If the key doesn't exist, the attachment will be added. If the key does exist, the existing attachment will be replaced. In bouth cases the retain count of the attachment will be incremented. The value can be any CFType but nil has no defined behavior. @param buffer Target CVBuffer object. @param key Key in form of a CFString identifying the desired attachment. @param value Attachment in form af a CF object. @param attachmentMode Specifies which attachment mode is desired for this attachment. A particular attachment key may only exist in a single mode at a time.

func CVBufferSetAttachments ¶

func CVBufferSetAttachments(buffer unsafe.Pointer, theAttachments unsafe.Pointer, attachmentMode CVAttachmentMode)

@function CVBufferSetAttachments @abstract Sets a set of attachments for a CVBuffer @discussion CVBufferSetAttachments is a convenience call that in turn calls CVBufferSetAttachment for each key and value in the given dictionary. All key value pairs must be in the root level of the dictionary. @param buffer Target CVBuffer object.

func CVColorPrimariesGetIntegerCodePointForString ¶

func CVColorPrimariesGetIntegerCodePointForString(colorPrimariesString unsafe.Pointer) int

func CVColorPrimariesGetStringForIntegerCodePoint ¶

func CVColorPrimariesGetStringForIntegerCodePoint(colorPrimariesCodePoint int) unsafe.Pointer

func CVDisplayLinkCreateWithActiveCGDisplays ¶

func CVDisplayLinkCreateWithActiveCGDisplays(displayLinkOut unsafe.Pointer) int32

@function CVDisplayLinkCreateWithActiveCGDisplays @abstract Convenience function to create a CVDisplayLink capable of being used with all active CGDisplays @param displayLinkOut The newly created CVDisplayLink @result kCVReturnSuccess if the device was created, or failure

func CVDisplayLinkCreateWithCGDisplay ¶

func CVDisplayLinkCreateWithCGDisplay(displayID uint32, displayLinkOut unsafe.Pointer) int32

@function CVDisplayLinkCreateWithCGDisplay @abstract Convenience call to create a CVDisplayLink for a single CGDirectDisplay. @discussion Use this call to create a CVDisplayLink for a single CGDirectDisplay. @param displayID CGDirectDisplayID of the target display @param displayLinkOut The new display link will be returned here @result returns kCVReturnSuccess on success.

func CVDisplayLinkCreateWithCGDisplays ¶

func CVDisplayLinkCreateWithCGDisplays(displayArray *uint32, count int, displayLinkOut unsafe.Pointer) int32

@function CVDisplayLinkCreateWithCGDisplays @abstract General call to create a CVDisplayLink @discussion Use this call to create a CVDisplayLink for a set of displays indentified by the CGDirectDisplayIDs. @param displayArray array of CGDirectDisplayIDs @param count number of displays in the displayArray @param displayLinkOut The new display link will be returned here @result returns kCVReturnSuccess on success.

func CVDisplayLinkCreateWithOpenGLDisplayMask ¶

func CVDisplayLinkCreateWithOpenGLDisplayMask(mask uint32, displayLinkOut unsafe.Pointer) int32

@function CVDisplayLinkCreateWithOpenGLDisplayMask @abstract Convenience call to create a CVDisplayLink from an OpenGL display mask. @discussion Use this call to create a CVDisplayLink for a CGOpenGLDisplayMask. @param mask CGOpenGLDisplayMask describing the display @param displayLinkOut The new display link will be returned here @result returns kCVReturnSuccess on success.

func CVDisplayLinkGetActualOutputVideoRefreshPeriod ¶

func CVDisplayLinkGetActualOutputVideoRefreshPeriod(displayLink unsafe.Pointer) float64

@function CVDisplayLinkGetActualOutputVideoRefreshPeriod @abstract Retrieves the actual output refresh period of a display as measured by the host timebase. @discussion This call returns the actual output refresh period (in seconds) as computed relative to the host's timebase. @param displayLink The CVDisplayLink to get the refresh period from. @result A double containing the actual refresh period. This value may be zero if the device is not running, or is otherwise unavailable.

func CVDisplayLinkGetCurrentCGDisplay ¶

func CVDisplayLinkGetCurrentCGDisplay(displayLink unsafe.Pointer) uint32

@function CVDisplayLinkGetCurrentCGDisplay @abstract Gets the current display of a DisplayLink @discussion (description) @param displayLink target CVDisplayLinkRef @result CGDirectDisplayID

func CVDisplayLinkGetCurrentTime ¶

func CVDisplayLinkGetCurrentTime(displayLink unsafe.Pointer, outTime *CVTimeStamp) int32

@function CVDisplayLinkGetCurrentTime @abstract Retrieves the current ("now") time of a given CVDisplayLink @discussion This call may be used to get the current time of a running CVDisplayLink, outside of the output callback. @param displayLink The CVDisplayLink to get the current time from. @param outTime A pointer to a CVTimeStamp struct. This struct's version field must currently be set correctly (currently 0) to indicate which version of the timestamp struct is desired. @result kCVReturnSuccess if the current time could be retrieved, otherwise an error indicating why the operation failed.

func CVDisplayLinkGetTypeID ¶

func CVDisplayLinkGetTypeID() uint

func CVDisplayLinkIsRunning ¶

func CVDisplayLinkIsRunning(displayLink unsafe.Pointer) uint8

@function CVDisplayLinkIsRunning @abstract Retrieves the running state of a CVDisplayLink. @discussion This call queries the running state of the given CVDisplayLink. @param displayLink The CVDisplayLink to get the running state from. @result A boolean describing the running state. It returns true if it is running and false if it is not running or the CVDisplayLink is invalid.

func CVDisplayLinkRelease ¶

func CVDisplayLinkRelease(displayLink unsafe.Pointer)

@function CVDisplayLinkRelease @abstract Releases the CVDisplayLink @discussion Use this call to release a CVDisplayLink. @param displayLink target CVDisplayLinkRef. NULL safe.

func CVDisplayLinkRetain ¶

func CVDisplayLinkRetain(displayLink unsafe.Pointer) unsafe.Pointer

@function CVDisplayLinkRetain @abstract Retains the CVDisplayLink @discussion Use this call to retain a CVDisplayLink. @param displayLink target CVDisplayLinkRef. NULL safe. @result If successfull the passed in dislplayLink

func CVDisplayLinkSetCurrentCGDisplay ¶

func CVDisplayLinkSetCurrentCGDisplay(displayLink unsafe.Pointer, displayID uint32) int32

@function CVDisplayLinkSetCurrentCGDisplay @abstract Sets the current display of a DisplayLink @discussion It is safe to call this with a running display link, but be aware that there will likely be a timestamp discontinuity in the video time stamp @param displayLink target CVDisplayLinkRef @param displayID target CGDirectDisplayID @result CVReturn. kCVReturnSuccess if successfull.

func CVDisplayLinkSetCurrentCGDisplayFromOpenGLContext ¶

func CVDisplayLinkSetCurrentCGDisplayFromOpenGLContext(displayLink unsafe.Pointer, cglContext unsafe.Pointer, cglPixelFormat unsafe.Pointer) int32

@function CVDisplayLinkSetCurrentCGDisplayFromOpenGLContext @abstract Convenience function to select a CVDisplayLink most optimal for the current renderer of the passed in OpenGL context @param displayLink The CVDisplayLink for which you want to set the current CGDisplay @param cglContext The OpenGL context to retrieve the current renderer from. @param cglPixelFormat The OpenGL pixel format used to create the passed in OpenGL context @result kCVReturnSuccess if a device was found, or failure.

func CVDisplayLinkSetOutputCallback ¶

func CVDisplayLinkSetOutputCallback(displayLink unsafe.Pointer, callback unsafe.Pointer, userInfo unsafe.Pointer) int32

@function CVDisplayLinkSetOutputCallback @abstract Set the renderer output callback function @discussion The DisplayLink will invoke this callback whenever it wants you to output a frame. @param displayLink target CVDisplayLinkRef @param callback CVDisplayLinkOutputCallback function @param userInfo User data for the callback to identify the context. @result CVReturn. kCVReturnSuccess if successfull.

func CVDisplayLinkSetOutputHandler ¶

func CVDisplayLinkSetOutputHandler(displayLink unsafe.Pointer, handler func(unsafe.Pointer, *CVTimeStamp, *CVTimeStamp, uint64, *uint64) int32) int32

func CVDisplayLinkStart ¶

func CVDisplayLinkStart(displayLink unsafe.Pointer) int32

@function CVDisplayLinkStart @abstract Start timer for DisplayLink @discussion This call should not be made from inside the CVDisplayLinkOutputCallback @param displayLink target CVDisplayLinkRef @result CVReturn. kCVReturnSuccess if successfull. kCVReturnDisplayLinkCallbacksNotSet The DisplayLink cannot be started until the output callback is set.

func CVDisplayLinkStop ¶

func CVDisplayLinkStop(displayLink unsafe.Pointer) int32

@function CVDisplayLinkStop @abstract Stop timer for DisplayLink @discussion (description) @param displayLink target CVDisplayLinkRef @result CVReturn. kCVReturnSuccess if successfull.

func CVDisplayLinkTranslateTime ¶

func CVDisplayLinkTranslateTime(displayLink unsafe.Pointer, inTime *CVTimeStamp, outTime *CVTimeStamp) int32

@function CVDisplayLinkTranslateTime @abstract Translates the time in the CVDisplayLink's time base from one representation to another. Note that the device has to be running for this call to succeed. @param displayLink The CVDisplayLink who's timebase should be used to do the translation. @param inTime A CVTimeStamp containing the source time to be translated. @param outTime A CVTimeStamp into which the target time will be written. This struct's version field must currently be set correctly (currently 0) to indicate which version of the timestamp struct is desired. As well, the flags field should be used to specify which representations to translate to. @result kCVReturnSuccess if the time could be translated, otherwise an error indicating why the operation failed.

func CVGetCurrentHostTime ¶

func CVGetCurrentHostTime() uint64

@function CVGetCurrentHostTime @abstract Retrieve the current value of the host time base. @discussion On Mac OS X, the host time base for CoreVideo and CoreAudio are identical, and the values returned from either API may be used interchangeably. @result The current host time.

func CVGetHostClockFrequency ¶

func CVGetHostClockFrequency() float64

@function CVGetHostClockFrequency @abstract Retrieve the frequency of the host time base. @discussion On Mac OS X, the host time base for CoreVideo and CoreAudio are identical, and the values returned from either API may be used interchangeably. @result The current host frequency.

func CVGetHostClockMinimumTimeDelta ¶

func CVGetHostClockMinimumTimeDelta() uint32

@function CVGetHostClockMinimumTimeDelta @abstract Retrieve the smallest possible increment in the host time base. @result The smallest valid increment in the host time base.

func CVImageBufferCreateColorSpaceFromAttachments ¶

func CVImageBufferCreateColorSpaceFromAttachments(attachments unsafe.Pointer) unsafe.Pointer

@function CVImageBufferCreateColorSpaceFromAttachments @abstract Attempts to synthesize a CGColorSpace from an image buffer's attachments. @param attachments A CFDictionary of attachments for an image buffer, obtained using CVBufferCopyAttachments(). @result A CGColorSpaceRef representing the color space of the buffer. Returns NULL if the attachments dictionary does not contain the information required to synthesize a CGColorSpace. @discussion To generate a CGColorSpace, the attachments dictionary should include values for either: 1. kCVImageBufferICCProfile 2. kCVImageBufferColorPrimariesKey, kCVImageBufferTransferFunctionKey, and kCVImageBufferYCbCrMatrixKey (and possibly kCVImageBufferGammaLevelKey) The client is responsible for releasing the CGColorSpaceRef when it is done with it (CGColorSpaceRelease() or CFRelease())

func CVImageBufferGetCleanRect ¶

func CVImageBufferGetCleanRect(imageBuffer unsafe.Pointer) corefoundation.CGRect

@function CVImageBufferGetCleanRect @abstract Returns the source rectangle of a CVImageBuffer that represents the clean aperture of the buffer in encoded pixels. For example, an NTSC DV frame would return a CGRect with an origin of 8,0 and a size of 704,480. Note that the origin of this rect always the lower left corner. This is the same coordinate system as used by CoreImage. @param imageBuffer A CVImageBuffer that you wish to retrieve the display size from. @result A CGSize returning the nominal display size of the buffer Returns zero rect if called with a non-CVImageBufferRef type or NULL.

func CVImageBufferGetColorSpace ¶

func CVImageBufferGetColorSpace(imageBuffer unsafe.Pointer) unsafe.Pointer

@function CVImageBufferGetColorSpace @abstract Returns the color space of a CVImageBuffer. @param imageBuffer A CVImageBuffer that you wish to retrieve the color space from. @result A CGColorSpaceRef representing the color space of the buffer. Returns NULL if called with a non-CVImageBufferRef type or NULL.

func CVImageBufferGetDisplaySize ¶

func CVImageBufferGetDisplaySize(imageBuffer unsafe.Pointer) corefoundation.CGSize

@function CVImageBufferGetDisplaySize @abstract Returns the nominal output display size (in square pixels) of a CVImageBuffer. For example, for an NTSC DV frame this would be 640x480 @param imageBuffer A CVImageBuffer that you wish to retrieve the display size from. @result A CGSize returning the nominal display size of the buffer Returns zero size if called with a non-CVImageBufferRef type or NULL.

func CVImageBufferGetEncodedSize ¶

func CVImageBufferGetEncodedSize(imageBuffer unsafe.Pointer) corefoundation.CGSize

@function CVImageBufferGetEncodedSize @abstract Returns the full encoded dimensions of a CVImageBuffer. For example, for an NTSC DV frame this would be 720x480 @param imageBuffer A CVImageBuffer that you wish to retrieve the encoded size from. @result A CGSize returning the full encoded size of the buffer Returns zero size if called with a non-CVImageBufferRef type or NULL.

func CVImageBufferIsFlipped ¶

func CVImageBufferIsFlipped(imageBuffer unsafe.Pointer) uint8

@function CVImageBufferIsFlipped @abstract Returns whether the image is flipped vertically or not. @param imageBuffer target @result True if 0,0 in the texture is upper left, false if 0,0 is lower left.

func CVIsCompressedPixelFormatAvailable ¶

func CVIsCompressedPixelFormatAvailable(pixelFormatType uint) uint8

@function CVIsCompressedPixelFormatAvailable @abstract Checks if a compressed pixel format is supported on the current platform. @param pixelFormatType compressed pixel format. @result True if pixel format is supported on the current platform.

func CVMetalBufferCacheCreate ¶

func CVMetalBufferCacheCreate(allocator unsafe.Pointer, cacheAttributes unsafe.Pointer, metalDevice metal.MTLDevice, cacheOut unsafe.Pointer) int32

@function CVMetalBufferCacheCreate @abstract Creates a new Buffer Cache. @param allocator The CFAllocatorRef to use for allocating the cache. May be NULL. @param cacheAttributes A CFDictionaryRef containing the attributes of the cache itself. May be NULL. @param metalDevice The Metal device for which the buffer objects will be created. @param cacheOut The newly created buffer cache will be placed here @result Returns kCVReturnSuccess on success

func CVMetalBufferCacheCreateBufferFromImage ¶

func CVMetalBufferCacheCreateBufferFromImage(allocator unsafe.Pointer, bufferCache unsafe.Pointer, imageBuffer unsafe.Pointer, bufferOut unsafe.Pointer) int32

@function CVMetalBufferCacheCreateBuffer @abstract Creates a CVMetalBuffer object from an existing CVImageBuffer @param allocator The CFAllocatorRef to use for allocating the CVMetalBuffer object. May be NULL. @param bufferCache The buffer cache object that will manage the buffer. @param buffer The CVImageBuffer that you want to create a CVMetalBuffer from. @param bufferOut The newly created buffer object will be placed here. @result Returns kCVReturnSuccess on success @discussion Creates or returns a cached CVMetalBuffer object mapped to the CVImageBuffer. This creates a live binding between the CVImageBuffer and underlying CVMetalBuffer buffer object. IMPORTANT NOTE: Clients should retain CVMetalBuffer objects until they are done using the images in them. Retaining a CVMetalBuffer is your way to indicate that you're still using the image in the buffer, and that it should not be recycled yet.

func CVMetalBufferCacheFlush ¶

func CVMetalBufferCacheFlush(bufferCache unsafe.Pointer, options uint64)

@function CVMetalBufferCacheFlush @abstract Performs internal housekeeping/recycling operations @discussion This call must be made periodically to give the buffer cache a chance to do internal housekeeping operations. @param bufferCache The buffer cache object to flush @param options Currently unused, set to 0.

func CVMetalBufferCacheGetTypeID ¶

func CVMetalBufferCacheGetTypeID() uint

func CVMetalBufferGetBuffer ¶

func CVMetalBufferGetBuffer(buffer unsafe.Pointer) metal.MTLBuffer

@function CVMetalBufferGetBuffer @abstract Returns the Metal MTLBuffer object of the CVMetalBufferRef @param buffer Target CVMetalBuffer @result Metal buffer

func CVMetalBufferGetTypeID ¶

func CVMetalBufferGetTypeID() uint

func CVMetalTextureCacheCreate ¶

func CVMetalTextureCacheCreate(allocator unsafe.Pointer, cacheAttributes unsafe.Pointer, metalDevice metal.MTLDevice, textureAttributes unsafe.Pointer, cacheOut unsafe.Pointer) int32

@function CVMetalTextureCacheCreate @abstract Creates a new Texture Cache. @param allocator The CFAllocatorRef to use for allocating the cache. May be NULL. @param cacheAttributes A CFDictionaryRef containing the attributes of the cache itself. May be NULL. @param metalDevice The Metal device for which the texture objects will be created. @param textureAttributes A CFDictionaryRef containing the attributes to be used for creating the CVMetalTexture objects. May be NULL. @param cacheOut The newly created texture cache will be placed here @result Returns kCVReturnSuccess on success

func CVMetalTextureCacheCreateTextureFromImage ¶

func CVMetalTextureCacheCreateTextureFromImage(allocator unsafe.Pointer, textureCache unsafe.Pointer, sourceImage unsafe.Pointer, textureAttributes unsafe.Pointer, pixelFormat metal.MTLPixelFormat, width uint, height uint, planeIndex uint, textureOut unsafe.Pointer) int32

@function CVMetalTextureCacheCreateTextureFromImage @abstract Creates a CVMetalTexture object from an existing CVImageBuffer @param allocator The CFAllocatorRef to use for allocating the CVMetalTexture object. May be NULL. @param textureCache The texture cache object that will manage the texture. @param sourceImage The CVImageBuffer that you want to create a CVMetalTexture from. @param textureAttributes A CFDictionaryRef containing attributes to be used for creating the CVMetalTexture objects. May be NULL. @param pixelFormat Specifies the Metal pixel format. @param width Specifies the width of the texture image. @param height Specifies the height of the texture image. @param planeIndex Specifies the plane of the CVImageBuffer to map bind. Ignored for non-planar CVImageBuffers. @param textureOut The newly created texture object will be placed here. @result Returns kCVReturnSuccess on success @discussion Creates or returns a cached CVMetalTexture texture object mapped to the CVImageBuffer and associated params. This creates a live binding between the CVImageBuffer and underlying CVMetalTexture texture object. IMPORTANT NOTE: Clients should retain CVMetalTexture objects until they are done using the images in them. Retaining a CVMetalTexture is your way to indicate that you're still using the image in the buffer, and that it should not be recycled yet. Note that CoreVideo does not explicitly declare any pixel format types to be Metal compatible. The assumption is that if the CVPixelBufferMetalCompatibilityKey has been specified, all buffers will be Metal compatible (IOSurface backed), and thus it is the developer's responsibility to choose an appropriate Metal pixel format for the CVPixelBuffers. Here are some example mappings: Mapping a BGRA buffer: CVMetalTextureCacheCreateTextureFromImage(kCFAllocatorDefault, textureCache, pixelBuffer, NULL, MTLPixelFormatBGRA8Unorm, width, height, 0, &outTexture); Mapping the luma plane of a 420v buffer: CVMetalTextureCacheCreateTextureFromImage(kCFAllocatorDefault, textureCache, pixelBuffer, NULL, MTLPixelFormatR8Unorm, width, height, 0, &outTexture); Mapping the chroma plane of a 420v buffer as a source texture: CVMetalTextureCacheCreateTextureFromImage(kCFAllocatorDefault, textureCache, pixelBuffer, NULL, MTLPixelFormatRG8Unorm width/2, height/2, 1, &outTexture); Mapping a yuvs buffer as a source texture (note: yuvs/f and 2vuy are unpacked and resampled -- not colorspace converted) CVMetalTextureCacheCreateTextureFromImage(kCFAllocatorDefault, textureCache, pixelBuffer, NULL, MTLPixelFormatGBGR422, width, height, 1, &outTexture);

func CVMetalTextureCacheFlush ¶

func CVMetalTextureCacheFlush(textureCache unsafe.Pointer, options uint64)

@function CVMetalTextureCacheFlush @abstract Performs internal housekeeping/recycling operations @discussion This call must be made periodically to give the texture cache a chance to do internal housekeeping operations. @param textureCache The texture cache object to flush @param options Currently unused, set to 0.

func CVMetalTextureCacheGetTypeID ¶

func CVMetalTextureCacheGetTypeID() uint

func CVMetalTextureGetCleanTexCoords ¶

func CVMetalTextureGetCleanTexCoords(image unsafe.Pointer, lowerLeft *float32, lowerRight *float32, upperRight *float32, upperLeft *float32)

@function CVMetalTextureGetCleanTexCoords @abstract Returns convenient normalized texture coordinates for the part of the image that should be displayed @discussion This function automatically takes into account whether or not the texture is flipped. @param image Target CVMetalTexture @param lowerLeft - array of two floats where the s and t normalized texture coordinates of the lower left corner of the image will be stored @param lowerRight - array of two floats where the s and t normalized texture coordinates of the lower right corner of the image will be stored @param upperRight - array of two floats where the s and t normalized texture coordinates of the upper right corner of the image will be stored @param upperLeft - array of two floats where the s and t normalized texture coordinates of the upper right corner of the image will be stored

func CVMetalTextureGetTexture ¶

func CVMetalTextureGetTexture(image unsafe.Pointer) metal.MTLTexture

@function CVMetalTextureGetTexture @abstract Returns the Metal MTLTexture object of the CVMetalTextureRef @param image Target CVMetalTexture @result Metal texture

func CVMetalTextureGetTypeID ¶

func CVMetalTextureGetTypeID() uint

func CVMetalTextureIsFlipped ¶

func CVMetalTextureIsFlipped(image unsafe.Pointer) uint8

@function CVMetalTextureIsFlipped @abstract Returns whether the image is flipped vertically or not. @param image Target CVMetalTexture @result True if 0,0 in the texture is upper left, false if 0,0 is lower left

func CVOpenGLBufferAttach ¶

func CVOpenGLBufferAttach(openGLBuffer unsafe.Pointer, cglContext unsafe.Pointer, face uint32, level int32, screen int32) int32

@function CVOpenGLBufferAttach @param openGLBuffer The buffer you wish to attach a GL context to @param cglContext The CGLContextObj you wish to attach @param face The target GL face enum (0 for non cube maps) @param level The mipmap level index you wish to attach to @param screen The virtual screen number you want to use @result kCVReturnSuccess if the attachment succeeded

func CVOpenGLBufferCreate ¶

func CVOpenGLBufferCreate(allocator unsafe.Pointer, width uint, height uint, attributes unsafe.Pointer, bufferOut unsafe.Pointer) int32

@function CVOpenGLBufferCreate @abstract Create a new CVOpenGLBuffer that may be used for OpenGL rendering purposes @param width The width of the buffer in pixels @param height The height of the buffer in pixels @param attributes A CFDictionaryRef containing other desired attributes of the buffer (texture target, internal format, max mipmap level, etc.). May be NULL. Defaults are GL_TEXTURE_RECTANGLE_EXT, GL_RGBA, and 0 for kCVOpenGLBufferTarget, kCVOpenGLBufferInternalFormat and kCVOpenGLBufferMaximumMipmapLevel, respectively. @param bufferOut The newly created buffer will be placed here. @result kCVReturnSuccess if the attachment succeeded

func CVOpenGLBufferGetAttributes ¶

func CVOpenGLBufferGetAttributes(openGLBuffer unsafe.Pointer) unsafe.Pointer

@function CVOpenGLBufferGetAttributes @param openGLBuffer Target OpenGL Buffer. @result CVOpenGLBuffer attributes dictionary, NULL if not set.

func CVOpenGLBufferGetTypeID ¶

func CVOpenGLBufferGetTypeID() uint

func CVOpenGLBufferPoolCreate ¶

func CVOpenGLBufferPoolCreate(allocator unsafe.Pointer, poolAttributes unsafe.Pointer, openGLBufferAttributes unsafe.Pointer, poolOut unsafe.Pointer) int32

@function CVOpenGLBufferPoolCreate @abstract Creates a new OpenGL Buffer pool. @discussion Equivalent to CFRelease, but NULL safe @param allocator The CFAllocatorRef to use for allocating this buffer pool. May be NULL. @param poolAttributes A CFDictionaryRef containing the attributes to be used for the pool itself. @param openGLBufferAttributes A CFDictionaryRef containing the attributes to be used for creating new OpenGLBuffers within the pool. @param poolOut The newly created pool will be placed here @result Returns kCVReturnSuccess on success

func CVOpenGLBufferPoolCreateOpenGLBuffer ¶

func CVOpenGLBufferPoolCreateOpenGLBuffer(allocator unsafe.Pointer, openGLBufferPool unsafe.Pointer, openGLBufferOut unsafe.Pointer) int32

@function CVOpenGLBufferPoolCreateOpenGLBuffer @abstract Creates a new OpenGLBuffer object from the pool. @discussion The function creates a new CVOpenGLBuffer with the default attachments using the OpenGL buffer attributes specifed during pool creation. @param allocator The CFAllocatorRef to use for creating the OpenGL buffer. May be NULL. @param openGLBufferPool The CVOpenGLBufferPool that should create the new CVOpenGLBuffer. @param openGLBufferOut The newly created OpenGL buffer will be placed here @result Returns kCVReturnSuccess on success

func CVOpenGLBufferPoolGetAttributes ¶

func CVOpenGLBufferPoolGetAttributes(pool unsafe.Pointer) unsafe.Pointer

@function CVOpenGLBufferPoolGetOpenGLBufferAttributes @abstract Returns the pool attributes dictionary for a CVOpenGLBufferPool @param pool The CVOpenGLBufferPoolRef to retrieve the attributes from @result Returns the pool attributes dictionary, or NULL on failure.

func CVOpenGLBufferPoolGetOpenGLBufferAttributes ¶

func CVOpenGLBufferPoolGetOpenGLBufferAttributes(pool unsafe.Pointer) unsafe.Pointer

@function CVOpenGLBufferPoolGetOpenGLBufferAttributes @abstract Returns the attributes of OpenGL buffers that will be created from this pool. @discussion This function is provided for those cases where you may need to know some information about the buffers that will be created up front. @param pool The CVOpenGLBufferPoolRef to retrieve the attributes from @result Returns the OpenGL buffer attributes dictionary, or NULL on failure.

func CVOpenGLBufferPoolGetTypeID ¶

func CVOpenGLBufferPoolGetTypeID() uint

func CVOpenGLBufferPoolRelease ¶

func CVOpenGLBufferPoolRelease(openGLBufferPool unsafe.Pointer)

@function CVOpenGLBufferPoolRelease @abstract Releases a CVOpenGLBufferPoolRef object @discussion Equivalent to CFRelease, but NULL safe @param buffer A CVOpenGLBufferPoolRef object that you want to release.

func CVOpenGLBufferPoolRetain ¶

func CVOpenGLBufferPoolRetain(openGLBufferPool unsafe.Pointer) unsafe.Pointer

@function CVOpenGLBufferPoolRetain @abstract Retains a CVOpenGLBufferPoolRef object @discussion Equivalent to CFRetain, but NULL safe @param buffer A CVOpenGLBufferPoolRef object that you want to retain. @result A CVOpenGLBufferPoolRef object that is the same as the passed in buffer.

func CVOpenGLBufferRelease ¶

func CVOpenGLBufferRelease(buffer unsafe.Pointer)

@function CVOpenGLBufferRelease @abstract Releases a CVOpenGLBuffer object @discussion Equivalent to CFRelease, but NULL safe @param buffer A CVOpenGLBuffer object that you want to release.

func CVOpenGLBufferRetain ¶

func CVOpenGLBufferRetain(buffer unsafe.Pointer) unsafe.Pointer

@function CVOpenGLBufferRetain @abstract Retains a CVOpenGLBuffer object @discussion Equivalent to CFRetain, but NULL safe @param buffer A CVOpenGLBuffer object that you want to retain. @result A CVOpenGLBuffer object that is the same as the passed in buffer.

func CVOpenGLTextureCacheCreate ¶

func CVOpenGLTextureCacheCreate(allocator unsafe.Pointer, cacheAttributes unsafe.Pointer, cglContext unsafe.Pointer, cglPixelFormat unsafe.Pointer, textureAttributes unsafe.Pointer, cacheOut unsafe.Pointer) int32

@function CVOpenGLTextureCacheCreate @abstract Creates a new Texture Cache. @param allocator The CFAllocatorRef to use for allocating the cache. May be NULL. @param cacheAttributes A CFDictionaryRef containing the attributes of the cache itself. May be NULL. @param cglContext The OpenGL context into which the texture objects will be created @param cglPixelFormat The OpenGL pixel format object used to create the passed in OpenGL context @param textureAttributes A CFDictionaryRef containing the attributes to be used for creating the CVOpenGLTexture objects. May be NULL. @param cacheOut The newly created texture cache will be placed here @result Returns kCVReturnSuccess on success

func CVOpenGLTextureCacheCreateTextureFromImage ¶

func CVOpenGLTextureCacheCreateTextureFromImage(allocator unsafe.Pointer, textureCache unsafe.Pointer, sourceImage unsafe.Pointer, attributes unsafe.Pointer, textureOut unsafe.Pointer) int32

@function CVOpenGLTextureCacheCreateTextureFromImage @abstract Creates a CVOpenGLTexture object from an existing CVImageBuffer @param allocator The CFAllocatorRef to use for allocating the CVOpenGLTexture object. May be NULL. @param textureCache The texture cache object that will manage the texture @param sourceImage The CVImageBuffer that you want to create a CVOpenGLTexture from. @param attributes For Future use only! - The desired buffer attributes for the CVOpenGLTexture. @param textureOut The newly created texture object will be placed here. @result Returns kCVReturnSuccess on success

func CVOpenGLTextureCacheFlush ¶

func CVOpenGLTextureCacheFlush(textureCache unsafe.Pointer, options uint64)

@function CVOpenGLTextureCacheFlush @abstract Performs internal housekeeping/recycling operations @discussion 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. @param textureCache The texture cache object to flush @param options Currently unused, set to 0. @result Returns kCVReturnSuccess on success

func CVOpenGLTextureCacheGetTypeID ¶

func CVOpenGLTextureCacheGetTypeID() uint

func CVOpenGLTextureCacheRelease ¶

func CVOpenGLTextureCacheRelease(textureCache unsafe.Pointer)

@function CVOpenGLTextureCacheRelease @abstract Releases a CVOpenGLTextureCache object @discussion Equivalent to CFRelease, but NULL safe @param buffer A CVOpenGLTextureCache object that you want to release.

func CVOpenGLTextureCacheRetain ¶

func CVOpenGLTextureCacheRetain(textureCache unsafe.Pointer) unsafe.Pointer

@function CVOpenGLTextureCacheRetain @abstract Retains a CVOpenGLTextureCache object @discussion Equivalent to CFRetain, but NULL safe @param buffer A CVOpenGLTextureCache object that you want to retain. @result A CVOpenGLTextureCache object that is the same as the passed in buffer.

func CVOpenGLTextureGetCleanTexCoords ¶

func CVOpenGLTextureGetCleanTexCoords(image unsafe.Pointer, lowerLeft *float32, lowerRight *float32, upperRight *float32, upperLeft *float32)

@function CVOpenGLTextureGetCleanTexCoords @abstract Returns convenient texture coordinates for the part of the image that should be displayed @discussion This function automatically takes into account whether or not the texture is flipped. @param image Target CVOpenGLTexture @param lowerLeft - array of two GLfloats where the s and t texture coordinates of the lower left corner of the image will be stored @param lowerRight - array of two GLfloats where the s and t texture coordinates of the lower right corner of the image will be stored @param upperRight - array of two GLfloats where the s and t texture coordinates of the upper right corner of the image will be stored @param upperLeft - array of two GLfloats where the s and t texture coordinates of the upper right corner of the image will be stored

func CVOpenGLTextureGetName ¶

func CVOpenGLTextureGetName(image unsafe.Pointer) uint32

@function CVOpenGLTextureGetName @abstract Returns the texture target name of the CVOpenGLTexture @param image Target CVOpenGLTexture @result OpenGL texture target name

func CVOpenGLTextureGetTarget ¶

func CVOpenGLTextureGetTarget(image unsafe.Pointer) uint32

@function CVOpenGLTextureGetTarget @abstract Returns the texture target (eg. 2D vs. rect texture extension) of the CVOpenGLTexture @param image Target CVOpenGLTexture @result OpenGL texture target

func CVOpenGLTextureGetTypeID ¶

func CVOpenGLTextureGetTypeID() uint

func CVOpenGLTextureIsFlipped ¶

func CVOpenGLTextureIsFlipped(image unsafe.Pointer) uint8

@function CVOpenGLTextureIsFlipped @abstract Returns whether the image is flipped vertically or not. @param image Target CVOpenGLTexture @result True if 0,0 in the texture is upper left, false if 0,0 is lower left

func CVOpenGLTextureRelease ¶

func CVOpenGLTextureRelease(texture unsafe.Pointer)

@function CVOpenGLTextureRelease @abstract Releases a CVOpenGLTexture object @discussion Equivalent to CFRelease, but NULL safe @param buffer A CVOpenGLTexture object that you want to release.

func CVOpenGLTextureRetain ¶

func CVOpenGLTextureRetain(texture unsafe.Pointer) unsafe.Pointer

@function CVOpenGLTextureRetain @abstract Retains a CVOpenGLTexture object @discussion Equivalent to CFRetain, but NULL safe @param buffer A CVOpenGLTexture object that you want to retain. @result A CVOpenGLTexture object that is the same as the passed in buffer.

func CVPixelBufferCopyCreationAttributes ¶

func CVPixelBufferCopyCreationAttributes(pixelBuffer unsafe.Pointer) unsafe.Pointer

@function CVPixelBufferCopyCreationAttributes @abstract Returns a copy of pixelBufferAttributes dictionary used to create the PixelBuffer. @discussion Can be used to create similar pixelbuffers. @param pixelBuffer Target PixelBuffer.

func CVPixelBufferCreate ¶

func CVPixelBufferCreate(allocator unsafe.Pointer, width uint, height uint, pixelFormatType uint, pixelBufferAttributes unsafe.Pointer, pixelBufferOut unsafe.Pointer) int32

@function CVPixelBufferCreate @abstract Call to create a single PixelBuffer for a given size and pixelFormatType. @discussion Creates a single PixelBuffer for a given size and pixelFormatType. It allocates the necessary memory based on the pixel dimensions, pixelFormatType and extended pixels described in the pixelBufferAttributes. Not all parameters of the pixelBufferAttributes will be used here. @param width Width of the PixelBuffer in pixels. @param height Height of the PixelBuffer in pixels. @param pixelFormatType Pixel format indentified by its respective OSType. @param pixelBufferAttributes A dictionary with additional attributes for a pixel buffer. This parameter is optional. See BufferAttributeKeys for more details. @param pixelBufferOut The new pixel buffer will be returned here @result returns kCVReturnSuccess on success.

func CVPixelBufferCreateResolvedAttributesDictionary ¶

func CVPixelBufferCreateResolvedAttributesDictionary(allocator unsafe.Pointer, attributes unsafe.Pointer, resolvedDictionaryOut unsafe.Pointer) int32

@function CVPixelBufferCreateResolvedAttributesDictionary @abstract Takes a CFArray of CFDictionary objects describing various pixel buffer attributes and tries to resolve them into a single dictionary. @discussion This is useful when you need to resolve multiple requirements between different potential clients of a buffer. @param attributes CFArray of CFDictionaries containing kCVPixelBuffer key/value pairs. @param resolvedDictionaryOut The resulting dictionary will be placed here. @result Return value that may be useful in discovering why resolution failed.

func CVPixelBufferCreateWithBytes ¶

func CVPixelBufferCreateWithBytes(allocator unsafe.Pointer, width uint, height uint, pixelFormatType uint, baseAddress unsafe.Pointer, bytesPerRow uint, releaseCallback unsafe.Pointer, releaseRefCon unsafe.Pointer, pixelBufferAttributes unsafe.Pointer, pixelBufferOut unsafe.Pointer) int32

@function CVPixelBufferCreateWithBytes @abstract Call to create a single PixelBuffer for a given size and pixelFormatType based on a passed in piece of memory. @discussion Creates a single PixelBuffer for a given size and pixelFormatType. Not all parameters of the pixelBufferAttributes will be used here. It requires a release callback function that will be called, when the PixelBuffer gets destroyed so that the owner of the pixels can free the memory. @param width Width of the PixelBuffer in pixels @param height Height of the PixelBuffer in pixels @param pixelFormatType Pixel format indentified by its respective OSType. @param baseAddress Address of the memory storing the pixels. @param bytesPerRow Row bytes of the pixel storage memory. @param releaseCallback CVPixelBufferReleaseBytePointerCallback function that gets called when the PixelBuffer gets destroyed. @param releaseRefCon User data identifying the PixelBuffer for the release callback. @param pixelBufferAttributes A dictionary with additional attributes for a a pixel buffer. This parameter is optional. See PixelBufferAttributes for more details. @param pixelBufferOut The new pixel buffer will be returned here @result returns kCVReturnSuccess on success.

func CVPixelBufferCreateWithIOSurface ¶

func CVPixelBufferCreateWithIOSurface(allocator unsafe.Pointer, surface unsafe.Pointer, pixelBufferAttributes unsafe.Pointer, pixelBufferOut unsafe.Pointer) int32

@function CVPixelBufferCreateWithIOSurface @abstract Call to create a single CVPixelBuffer for a passed-in IOSurface. @discussion The CVPixelBuffer will retain the IOSurface. IMPORTANT NOTE: If you are using IOSurface to share CVPixelBuffers between processes and those CVPixelBuffers are allocated via a CVPixelBufferPool, it is important that the CVPixelBufferPool does not reuse CVPixelBuffers whose IOSurfaces are still in use in other processes. CoreVideo and IOSurface will take care of this for if you use IOSurfaceCreateMachPort and IOSurfaceLookupFromMachPort, but NOT if you pass IOSurfaceIDs. @param surface The IOSurface to wrap. @param pixelBufferAttributes A dictionary with additional attributes for a a pixel buffer. This parameter is optional. See PixelBufferAttributes for more details. @param pixelBufferOut The new pixel buffer will be returned here @result returns kCVReturnSuccess on success.

func CVPixelBufferCreateWithPlanarBytes ¶

func CVPixelBufferCreateWithPlanarBytes(allocator unsafe.Pointer, width uint, height uint, pixelFormatType uint, dataPtr unsafe.Pointer, dataSize uint, numberOfPlanes uint, planeBaseAddress unsafe.Pointer, planeWidth *uint, planeHeight *uint, planeBytesPerRow *uint, releaseCallback unsafe.Pointer, releaseRefCon unsafe.Pointer, pixelBufferAttributes unsafe.Pointer, pixelBufferOut unsafe.Pointer) int32

@function CVPixelBufferCreateWithPlanarBytes @abstract Call to create a single PixelBuffer in planar format for a given size and pixelFormatType based on a passed in piece of memory. @discussion Creates a single PixelBuffer for a given size and pixelFormatType. Not all parameters of the pixelBufferAttributes will be used here. It requires a release callback function that will be called, when the PixelBuffer gets destroyed so that the owner of the pixels can free the memory. @param width Width of the PixelBuffer in pixels @param height Height of the PixelBuffer in pixels @param pixelFormatType Pixel format indentified by its respective OSType. @param dataPtr Pass a pointer to a plane descriptor block, or NULL. @param dataSize pass size if planes are contiguous, NULL if not. @param numberOfPlanes Number of planes. @param planeBaseAddress Array of base addresses for the planes. @param planeWidth Array of plane widths. @param planeHeight Array of plane heights. @param planeBytesPerRow Array of plane bytesPerRow values. @param releaseCallback CVPixelBufferReleaseBytePointerCallback function that gets called when the PixelBuffer gets destroyed. @param releaseRefCon User data identifying the PixelBuffer for the release callback. @param pixelBufferAttributes A dictionary with additional attributes for a a pixel buffer. This parameter is optional. See PixelBufferAttributes for more details. @param pixelBufferOut The new pixel buffer will be returned here @result returns kCVReturnSuccess on success.

func CVPixelBufferFillExtendedPixels ¶

func CVPixelBufferFillExtendedPixels(pixelBuffer unsafe.Pointer) int32

@function CVPixelBufferFillExtendedPixels @abstract Fills the extended pixels of the PixelBuffer. This function replicates edge pixels to fill the entire extended region of the image. @param pixelBuffer Target PixelBuffer.

func CVPixelBufferGetBaseAddress ¶

func CVPixelBufferGetBaseAddress(pixelBuffer unsafe.Pointer) unsafe.Pointer

@function CVPixelBufferGetBaseAddress @abstract Returns the base address of the PixelBuffer. @discussion Retrieving the base address for a PixelBuffer requires that the buffer base address be locked via a successful call to CVPixelBufferLockBaseAddress. @param pixelBuffer Target PixelBuffer. @result Base address of the pixels. For chunky buffers, this will return a pointer to the pixel at 0,0 in the buffer For planar buffers this will return a pointer to a PlanarComponentInfo struct (defined in QuickTime).

func CVPixelBufferGetBaseAddressOfPlane ¶

func CVPixelBufferGetBaseAddressOfPlane(pixelBuffer unsafe.Pointer, planeIndex uint) unsafe.Pointer

@function CVPixelBufferGetBaseAddressOfPlane @abstract Returns the base address of the plane at planeIndex in the PixelBuffer. @discussion Retrieving the base address for a PixelBuffer requires that the buffer base address be locked via a successful call to CVPixelBufferLockBaseAddress. On OSX 10.10 and earlier, or iOS 8 and earlier, calling this function with a non-planar buffer will have undefined behavior. @param pixelBuffer Target PixelBuffer. @param planeIndex Identifying the plane. @result Base address of the plane, or NULL for non-planar CVPixelBufferRefs.

func CVPixelBufferGetBytesPerRow ¶

func CVPixelBufferGetBytesPerRow(pixelBuffer unsafe.Pointer) uint

@function CVPixelBufferGetBytesPerRow @abstract Returns the rowBytes of the PixelBuffer. @param pixelBuffer Target PixelBuffer. @result Bytes per row of the image data. For planar buffers this will return a rowBytes value such that bytesPerRow * height will cover the entire image including all planes.

func CVPixelBufferGetBytesPerRowOfPlane ¶

func CVPixelBufferGetBytesPerRowOfPlane(pixelBuffer unsafe.Pointer, planeIndex uint) uint

@function CVPixelBufferGetBytesPerRowOfPlane @abstract Returns the row bytes of the plane at planeIndex in the PixelBuffer. @discussion On OSX 10.10 and earlier, or iOS 8 and earlier, calling this function with a non-planar buffer will have undefined behavior. @param pixelBuffer Target PixelBuffer. @param planeIndex Identifying the plane. @result Row bytes of the plane, or NULL for non-planar CVPixelBufferRefs.

func CVPixelBufferGetDataSize ¶

func CVPixelBufferGetDataSize(pixelBuffer unsafe.Pointer) uint

@function CVPixelBufferGetDataSize @abstract Returns the data size for contigous planes of the PixelBuffer. @param pixelBuffer Target PixelBuffer. @result Data size used in CVPixelBufferCreateWithPlanarBytes.

func CVPixelBufferGetExtendedPixels ¶

func CVPixelBufferGetExtendedPixels(pixelBuffer unsafe.Pointer, extraColumnsOnLeft *uint, extraColumnsOnRight *uint, extraRowsOnTop *uint, extraRowsOnBottom *uint)

@function CVPixelBufferGetExtendedPixels @abstract Returns the size of extended pixels of the PixelBuffer. @discussion On OSX 10.10 and earlier, or iOS 8 and earlier, calling this function with a non-planar buffer will have undefined behavior. @param pixelBuffer Target PixelBuffer. @param extraColumnsOnLeft Returns the pixel row padding to the left. May be NULL. @param extraRowsOnTop Returns the pixel row padding to the top. May be NULL. @param extraColumnsOnRight Returns the pixel row padding to the right. May be NULL. @param extraRowsOnBottom Returns the pixel row padding to the bottom. May be NULL.

func CVPixelBufferGetHeight ¶

func CVPixelBufferGetHeight(pixelBuffer unsafe.Pointer) uint

@function CVPixelBufferGetHeight @abstract Returns the height of the PixelBuffer. @param pixelBuffer Target PixelBuffer. @result Height in pixels.

func CVPixelBufferGetHeightOfPlane ¶

func CVPixelBufferGetHeightOfPlane(pixelBuffer unsafe.Pointer, planeIndex uint) uint

@function CVPixelBufferGetHeightOfPlane @abstract Returns the height of the plane at planeIndex in the PixelBuffer. @discussion On OSX 10.10 and earlier, or iOS 8 and earlier, calling this function with a non-planar buffer will have undefined behavior. @param pixelBuffer Target PixelBuffer. @param planeIndex Identifying the plane. @result Height in pixels, or 0 for non-planar CVPixelBufferRefs.

func CVPixelBufferGetIOSurface ¶

func CVPixelBufferGetIOSurface(pixelBuffer unsafe.Pointer) unsafe.Pointer

@function CVPixelBufferGetIOSurface @abstract Returns the IOSurface backing the pixel buffer, or NULL if it is not backed by an IOSurface. @param pixelBuffer Target PixelBuffer.

func CVPixelBufferGetPixelFormatType ¶

func CVPixelBufferGetPixelFormatType(pixelBuffer unsafe.Pointer) uint

@function CVPixelBufferGetPixelFormatType @abstract Returns the PixelFormatType of the PixelBuffer. @param pixelBuffer Target PixelBuffer. @result OSType identifying the pixel format by its type.

func CVPixelBufferGetPlaneCount ¶

func CVPixelBufferGetPlaneCount(pixelBuffer unsafe.Pointer) uint

@function CVPixelBufferGetPlaneCount @abstract Returns number of planes of the PixelBuffer. @param pixelBuffer Target PixelBuffer. @result Number of planes. Returns 0 for non-planar CVPixelBufferRefs.

func CVPixelBufferGetTypeID ¶

func CVPixelBufferGetTypeID() uint

func CVPixelBufferGetWidth ¶

func CVPixelBufferGetWidth(pixelBuffer unsafe.Pointer) uint

@function CVPixelBufferGetWidth @abstract Returns the width of the PixelBuffer. @param pixelBuffer Target PixelBuffer. @result Width in pixels.

func CVPixelBufferGetWidthOfPlane ¶

func CVPixelBufferGetWidthOfPlane(pixelBuffer unsafe.Pointer, planeIndex uint) uint

@function CVPixelBufferGetWidthOfPlane @abstract Returns the width of the plane at planeIndex in the PixelBuffer. @discussion On OSX 10.10 and earlier, or iOS 8 and earlier, calling this function with a non-planar buffer will have undefined behavior. @param pixelBuffer Target PixelBuffer. @param planeIndex Identifying the plane. @result Width in pixels, or 0 for non-planar CVPixelBufferRefs.

func CVPixelBufferIsCompatibleWithAttributes ¶

func CVPixelBufferIsCompatibleWithAttributes(pixelBuffer unsafe.Pointer, attributes unsafe.Pointer) uint8

@function CVPixelBufferIsCompatibleWithAttributes @abstract Returns true if given pixel buffer is compatible with pixelBufferAttributes dictionary. @param pixelBuffer PixelBuffer to check for compatibility. @param attributes Creation attributes which pixel buffer should have.

func CVPixelBufferIsPlanar ¶

func CVPixelBufferIsPlanar(pixelBuffer unsafe.Pointer) uint8

@function CVPixelBufferIsPlanar @abstract Returns if the PixelBuffer is planar. @param pixelBuffer Target PixelBuffer. @result True if the PixelBuffer was created using CVPixelBufferCreateWithPlanarBytes.

func CVPixelBufferLockBaseAddress ¶

func CVPixelBufferLockBaseAddress(pixelBuffer unsafe.Pointer, lockFlags CVPixelBufferLockFlags) int32

@function CVPixelBufferLockBaseAddress @abstract Description Locks the BaseAddress of the PixelBuffer to ensure that the memory is accessible. @discussion This API ensures that the CVPixelBuffer is accessible in system memory. This should only be called if the base address is going to be used and the pixel data will be accessed by the CPU. @param pixelBuffer Target PixelBuffer. @param lockFlags See CVPixelBufferLockFlags. @result kCVReturnSuccess if the lock succeeded, or error code on failure

func CVPixelBufferPoolCreate ¶

func CVPixelBufferPoolCreate(allocator unsafe.Pointer, poolAttributes unsafe.Pointer, pixelBufferAttributes unsafe.Pointer, poolOut unsafe.Pointer) int32

@function CVPixelBufferPoolCreate @abstract Creates a new Pixel Buffer pool. @param allocator The CFAllocatorRef to use for allocating this buffer pool. May be NULL. @param attributes A CFDictionaryRef containing the attributes to be used for creating new PixelBuffers within the pool. @param poolOut The newly created pool will be placed here @result Returns kCVReturnSuccess on success

func CVPixelBufferPoolCreatePixelBuffer ¶

func CVPixelBufferPoolCreatePixelBuffer(allocator unsafe.Pointer, pixelBufferPool unsafe.Pointer, pixelBufferOut unsafe.Pointer) int32

@function CVPixelBufferPoolCreatePixelBuffer @abstract Creates a new PixelBuffer object from the pool. @discussion The function creates a new (attachment-free) CVPixelBuffer using the pixel buffer attributes specifed during pool creation. @param allocator The CFAllocatorRef to use for creating the pixel buffer. May be NULL. @param pool The CVPixelBufferPool that should create the new CVPixelBuffer. @param pixelBufferOut The newly created pixel buffer will be placed here @result Returns kCVReturnSuccess on success

func CVPixelBufferPoolCreatePixelBufferWithAuxAttributes ¶

func CVPixelBufferPoolCreatePixelBufferWithAuxAttributes(allocator unsafe.Pointer, pixelBufferPool unsafe.Pointer, auxAttributes unsafe.Pointer, pixelBufferOut unsafe.Pointer) int32

func CVPixelBufferPoolFlush ¶

func CVPixelBufferPoolFlush(pool unsafe.Pointer, options CVPixelBufferPoolFlushFlags)

@function CVPixelBufferPoolFlush @abstract Frees as many buffers from the pool as possible. @discussion By default, this function will free all aged out buffers. Setting the kCVPixelBufferPoolFlushExcessBuffers flag will cause this call to free all unused buffers regardless of age. @param pool The CVPixelBufferPool to be flushed. @param options Set to kCVPixelBufferPoolFlushExcessBuffers to free all unused buffers regardless of their age.

func CVPixelBufferPoolGetAttributes ¶

func CVPixelBufferPoolGetAttributes(pool unsafe.Pointer) unsafe.Pointer

@function CVPixelBufferPoolGetAttributes @abstract Returns the pool attributes dictionary for a CVPixelBufferPool @param pool The CVPixelBufferPoolRef to retrieve the attributes from @result Returns the pool attributes dictionary, or NULL on failure.

func CVPixelBufferPoolGetPixelBufferAttributes ¶

func CVPixelBufferPoolGetPixelBufferAttributes(pool unsafe.Pointer) unsafe.Pointer

@function CVPixelBufferPoolGetPixelBufferAttributes @abstract Returns the attributes of pixel buffers that will be created from this pool. @discussion This function is provided for those cases where you may need to know some information about the buffers that will be created up front. @param pool The CVPixelBufferPoolRef to retrieve the attributes from @result Returns the pixel buffer attributes dictionary, or NULL on failure.

func CVPixelBufferPoolGetTypeID ¶

func CVPixelBufferPoolGetTypeID() uint

func CVPixelBufferPoolRelease ¶

func CVPixelBufferPoolRelease(pixelBufferPool unsafe.Pointer)

@function CVPixelBufferPoolRelease @abstract Releases a CVPixelBufferPoolRef object @discussion Equivalent to CFRelease, but NULL safe @param buffer A CVPixelBufferPoolRef object that you want to release.

func CVPixelBufferPoolRetain ¶

func CVPixelBufferPoolRetain(pixelBufferPool unsafe.Pointer) unsafe.Pointer

@function CVPixelBufferPoolRetain @abstract Retains a CVPixelBufferPoolRef object @discussion Equivalent to CFRetain, but NULL safe @param buffer A CVPixelBufferPoolRef object that you want to retain. @result A CVPixelBufferPoolRef object that is the same as the passed in buffer.

func CVPixelBufferRelease ¶

func CVPixelBufferRelease(texture unsafe.Pointer)

@function CVPixelBufferRelease @abstract Releases a CVPixelBuffer object @discussion Equivalent to CFRelease, but NULL safe @param texture A CVPixelBuffer object that you want to release.

func CVPixelBufferRetain ¶

func CVPixelBufferRetain(texture unsafe.Pointer) unsafe.Pointer

@function CVPixelBufferRetain @abstract Retains a CVPixelBuffer object @discussion Equivalent to CFRetain, but NULL safe @param texture A CVPixelBuffer object that you want to retain. @result A CVPixelBuffer object that is the same as the passed in buffer.

func CVPixelBufferUnlockBaseAddress ¶

func CVPixelBufferUnlockBaseAddress(pixelBuffer unsafe.Pointer, unlockFlags CVPixelBufferLockFlags) int32

@function CVPixelBufferUnlockBaseAddress @abstract Description Unlocks the BaseAddress of the PixelBuffer. @param pixelBuffer Target PixelBuffer. @param unlockFlags See CVPixelBufferLockFlags. @result kCVReturnSuccess if the unlock succeeded, or error code on failure

func CVPixelFormatDescriptionArrayCreateWithAllPixelFormatTypes ¶

func CVPixelFormatDescriptionArrayCreateWithAllPixelFormatTypes(allocator unsafe.Pointer) unsafe.Pointer

func CVPixelFormatDescriptionCreateWithPixelFormatType ¶

func CVPixelFormatDescriptionCreateWithPixelFormatType(allocator unsafe.Pointer, pixelFormat uint) unsafe.Pointer

func CVPixelFormatDescriptionRegisterDescriptionWithPixelFormatType ¶

func CVPixelFormatDescriptionRegisterDescriptionWithPixelFormatType(description unsafe.Pointer, pixelFormat uint)

func CVPixelFormatTypeCopyFourCharCodeString ¶

func CVPixelFormatTypeCopyFourCharCodeString(pixelFormat uint) unsafe.Pointer

@function CVPixelFormatTypeCopyFourCharCodeString @abstract Creates a string with a formatted representation of a pixel format @param pixelFormat The pixel format to convert @result A string with a user displayable conversion of a pixel format.

func CVTransferFunctionGetIntegerCodePointForString ¶

func CVTransferFunctionGetIntegerCodePointForString(transferFunctionString unsafe.Pointer) int

func CVTransferFunctionGetStringForIntegerCodePoint ¶

func CVTransferFunctionGetStringForIntegerCodePoint(transferFunctionCodePoint int) unsafe.Pointer

func CVYCbCrMatrixGetIntegerCodePointForString ¶

func CVYCbCrMatrixGetIntegerCodePointForString(yCbCrMatrixString unsafe.Pointer) int

func CVYCbCrMatrixGetStringForIntegerCodePoint ¶

func CVYCbCrMatrixGetStringForIntegerCodePoint(yCbCrMatrixCodePoint int) unsafe.Pointer

func KCVBufferMovieTimeKey ¶

func KCVBufferMovieTimeKey() uintptr

func KCVBufferNonPropagatedAttachmentsKey ¶

func KCVBufferNonPropagatedAttachmentsKey() uintptr

func KCVBufferPropagatedAttachmentsKey ¶

func KCVBufferPropagatedAttachmentsKey() uintptr

func KCVBufferTimeScaleKey ¶

func KCVBufferTimeScaleKey() uintptr

func KCVBufferTimeValueKey ¶

func KCVBufferTimeValueKey() uintptr

func KCVImageBufferAlphaChannelIsOpaque ¶

func KCVImageBufferAlphaChannelIsOpaque() uintptr

func KCVImageBufferAlphaChannelModeKey ¶

func KCVImageBufferAlphaChannelModeKey() uintptr

func KCVImageBufferAlphaChannelMode_PremultipliedAlpha ¶

func KCVImageBufferAlphaChannelMode_PremultipliedAlpha() uintptr

func KCVImageBufferAlphaChannelMode_StraightAlpha ¶

func KCVImageBufferAlphaChannelMode_StraightAlpha() uintptr

func KCVImageBufferAmbientViewingEnvironmentKey ¶

func KCVImageBufferAmbientViewingEnvironmentKey() uintptr

func KCVImageBufferCGColorSpaceKey ¶

func KCVImageBufferCGColorSpaceKey() uintptr

func KCVImageBufferChromaLocationBottomFieldKey ¶

func KCVImageBufferChromaLocationBottomFieldKey() uintptr

func KCVImageBufferChromaLocationTopFieldKey ¶

func KCVImageBufferChromaLocationTopFieldKey() uintptr

func KCVImageBufferChromaLocation_Bottom ¶

func KCVImageBufferChromaLocation_Bottom() uintptr

func KCVImageBufferChromaLocation_BottomLeft ¶

func KCVImageBufferChromaLocation_BottomLeft() uintptr

func KCVImageBufferChromaLocation_Center ¶

func KCVImageBufferChromaLocation_Center() uintptr

func KCVImageBufferChromaLocation_DV420 ¶

func KCVImageBufferChromaLocation_DV420() uintptr

func KCVImageBufferChromaLocation_Left ¶

func KCVImageBufferChromaLocation_Left() uintptr

func KCVImageBufferChromaLocation_Top ¶

func KCVImageBufferChromaLocation_Top() uintptr

func KCVImageBufferChromaLocation_TopLeft ¶

func KCVImageBufferChromaLocation_TopLeft() uintptr

func KCVImageBufferChromaSubsamplingKey ¶

func KCVImageBufferChromaSubsamplingKey() uintptr

func KCVImageBufferChromaSubsampling_411 ¶

func KCVImageBufferChromaSubsampling_411() uintptr

func KCVImageBufferChromaSubsampling_420 ¶

func KCVImageBufferChromaSubsampling_420() uintptr

func KCVImageBufferChromaSubsampling_422 ¶

func KCVImageBufferChromaSubsampling_422() uintptr

func KCVImageBufferCleanApertureHeightKey ¶

func KCVImageBufferCleanApertureHeightKey() uintptr

func KCVImageBufferCleanApertureHorizontalOffsetKey ¶

func KCVImageBufferCleanApertureHorizontalOffsetKey() uintptr

func KCVImageBufferCleanApertureKey ¶

func KCVImageBufferCleanApertureKey() uintptr

func KCVImageBufferCleanApertureVerticalOffsetKey ¶

func KCVImageBufferCleanApertureVerticalOffsetKey() uintptr

func KCVImageBufferCleanApertureWidthKey ¶

func KCVImageBufferCleanApertureWidthKey() uintptr

func KCVImageBufferColorPrimaries_DCI_P3 ¶

func KCVImageBufferColorPrimaries_DCI_P3() uintptr

func KCVImageBufferColorPrimaries_EBU_3213 ¶

func KCVImageBufferColorPrimaries_EBU_3213() uintptr

func KCVImageBufferColorPrimaries_ITU_R_2020 ¶

func KCVImageBufferColorPrimaries_ITU_R_2020() uintptr

func KCVImageBufferColorPrimaries_P3_D65 ¶

func KCVImageBufferColorPrimaries_P3_D65() uintptr

func KCVImageBufferColorPrimaries_P22 ¶

func KCVImageBufferColorPrimaries_P22() uintptr

func KCVImageBufferColorPrimaries_SMPTE_C ¶

func KCVImageBufferColorPrimaries_SMPTE_C() uintptr

func KCVImageBufferContentLightLevelInfoKey ¶

func KCVImageBufferContentLightLevelInfoKey() uintptr

func KCVImageBufferDisplayDimensionsKey ¶

func KCVImageBufferDisplayDimensionsKey() uintptr

func KCVImageBufferDisplayHeightKey ¶

func KCVImageBufferDisplayHeightKey() uintptr

func KCVImageBufferDisplayMaskRectangleKey ¶

func KCVImageBufferDisplayMaskRectangleKey() uintptr

@constant kCVImageBufferDisplayMaskRectangleKey @abstract Specifies the rectangular display area within the image. The left, width, top and height are specified relative to a reference raster width and height that should be scaled to the image buffer dimensions. @discussion Value is a dictionary containing these keys for the raster rectangle: kCVImageBufferDisplayMaskRectangle_ReferenceRasterWidthKey kCVImageBufferDisplayMaskRectangle_ReferenceRasterHeightKey kCVImageBufferDisplayMaskRectangle_RectangleLeftKey kCVImageBufferDisplayMaskRectangle_RectangleWidthKey kCVImageBufferDisplayMaskRectangle_RectangleTopKey kCVImageBufferDisplayMaskRectangle_RectangleHeightKey

func KCVImageBufferDisplayMaskRectangleStereoLeftKey ¶

func KCVImageBufferDisplayMaskRectangleStereoLeftKey() uintptr

@constant kCVImageBufferDisplayMaskRectangleStereoLeftKey @abstract Specifies the rectangular display area within the left eye view of stereo images, using the same keys as with kCVImageBufferDisplayMaskRectangleKey. To address window violations in stereo video, points insetting the left and right edges of the rectangle are supported through additional keys, allowing the description of the "extended raster rectangle". @discussion Value is a dictionary containing these keys for the extended raster rectangle: kCVImageBufferDisplayMaskRectangle_ReferenceRasterWidthKey kCVImageBufferDisplayMaskRectangle_ReferenceRasterHeightKey kCVImageBufferDisplayMaskRectangle_RectangleLeftKey kCVImageBufferDisplayMaskRectangle_RectangleWidthKey kCVImageBufferDisplayMaskRectangle_RectangleTopKey kCVImageBufferDisplayMaskRectangle_RectangleHeightKey kCVImageBufferDisplayMaskRectangle_LeftEdgePointsKey kCVImageBufferDisplayMaskRectangle_RightEdgePointsKey

func KCVImageBufferDisplayMaskRectangleStereoRightKey ¶

func KCVImageBufferDisplayMaskRectangleStereoRightKey() uintptr

@constant kCVImageBufferDisplayMaskRectangleStereoRightKey @abstract Specifies the rectangular display area within the right eye view of stereo images, using the same keys as with kCVImageBufferDisplayMaskRectangleKey. To address window violations in stereo video, points insetting the left and right edges of the rectangle are supported through additional keys, allowing the description of the "extended raster rectangle". @discussion Value is a dictionary containing these keys for the extended raster rectangle: kCVImageBufferDisplayMaskRectangle_ReferenceRasterWidthKey kCVImageBufferDisplayMaskRectangle_ReferenceRasterHeightKey kCVImageBufferDisplayMaskRectangle_RectangleLeftKey kCVImageBufferDisplayMaskRectangle_RectangleWidthKey kCVImageBufferDisplayMaskRectangle_RectangleTopKey kCVImageBufferDisplayMaskRectangle_RectangleHeightKey kCVImageBufferDisplayMaskRectangle_LeftEdgePointsKey kCVImageBufferDisplayMaskRectangle_RightEdgePointsKey

func KCVImageBufferDisplayMaskRectangle_LeftEdgePointsKey ¶

func KCVImageBufferDisplayMaskRectangle_LeftEdgePointsKey() uintptr

@constant kCVImageBufferDisplayMaskRectangle_LeftEdgePointsKey @abstract Specifies inset points on the left vertical edge of the rectangle. The points are CFArray of unsigned 16-bit integer CFNumber pairs alternating between inset X and inset Y. Inset X is an unsigned offset from left edge (0) towards the right edge (width). Inset Y is an unsigned offset from top edge (0) towards the bottom edge (height)

func KCVImageBufferDisplayMaskRectangle_RectangleHeightKey ¶

func KCVImageBufferDisplayMaskRectangle_RectangleHeightKey() uintptr

@constant kCVImageBufferDisplayMaskRectangle_RectangleHeightKey @abstract Specifies the height of the rectangle starting at rectangle's top offset toward the rectangle's bottom edge. The height value is a CFNumber of unsigned 16-bit integer.

func KCVImageBufferDisplayMaskRectangle_RectangleLeftKey ¶

func KCVImageBufferDisplayMaskRectangle_RectangleLeftKey() uintptr

@constant kCVImageBufferDisplayMaskRectangle_RectangleLeftKey @abstract Specifies the horizontal pixel offset of the rectangle from the left of the bounding raster. The left offset value is a CFNumber of unsigned 16-bit integer that is less than the reference raster width value.

func KCVImageBufferDisplayMaskRectangle_RectangleTopKey ¶

func KCVImageBufferDisplayMaskRectangle_RectangleTopKey() uintptr

@constant kCVImageBufferDisplayMaskRectangle_RectangleTopKey @abstract Specifies the vertical pixel offset of the rectangle from the top of the bounding raster. The top offset value is a CFNumber of unsigned 16-bit integer that is less than the reference raster height value.

func KCVImageBufferDisplayMaskRectangle_RectangleWidthKey ¶

func KCVImageBufferDisplayMaskRectangle_RectangleWidthKey() uintptr

@constant kCVImageBufferDisplayMaskRectangle_RectangleWidthKey @abstract Specifies the width of the rectangle starting at rectangle's left offset toward the rectangle's right edge. The width value is a CFNumber of unsigned 16-bit integer.

func KCVImageBufferDisplayMaskRectangle_ReferenceRasterHeightKey ¶

func KCVImageBufferDisplayMaskRectangle_ReferenceRasterHeightKey() uintptr

@constant kCVImageBufferDisplayMaskRectangle_ReferenceRasterHeightKey @abstract Specifies the height in pixels of the 2D coordinate system to define the rectangle. 0,0 origin is the top-left. The raster height value is a CFNumber of unsigned 16-bit integer. Usually matches the height of the video or the output device.

func KCVImageBufferDisplayMaskRectangle_ReferenceRasterWidthKey ¶

func KCVImageBufferDisplayMaskRectangle_ReferenceRasterWidthKey() uintptr

@constant kCVImageBufferDisplayMaskRectangle_ReferenceRasterWidthKey @abstract Specifies the width in pixels of the 2D coordinate system to define the rectangle. 0,0 origin is the top-left. The raster width value is a CFNumber of unsigned 16-bit integer. Usually matches the width of the video or the output device.

func KCVImageBufferDisplayMaskRectangle_RightEdgePointsKey ¶

func KCVImageBufferDisplayMaskRectangle_RightEdgePointsKey() uintptr

@constant kCVImageBufferDisplayMaskRectangle_RightEdgePointsKey @abstract Specifies inset points on the right vertical edge of the rectangle. The points are CFArray of unsigned 16-bit integer CFNumber pairs alternating between inset X and inset Y. Inset X is an unsigned offset from right edge (0) towards the left edge (width). Inset Y is an unsigned offset from top edge (0) towards the bottom edge (height)

func KCVImageBufferDisplayWidthKey ¶

func KCVImageBufferDisplayWidthKey() uintptr

func KCVImageBufferFieldCountKey ¶

func KCVImageBufferFieldCountKey() uintptr

func KCVImageBufferFieldDetailKey ¶

func KCVImageBufferFieldDetailKey() uintptr

func KCVImageBufferFieldDetailSpatialFirstLineEarly ¶

func KCVImageBufferFieldDetailSpatialFirstLineEarly() uintptr

func KCVImageBufferFieldDetailSpatialFirstLineLate ¶

func KCVImageBufferFieldDetailSpatialFirstLineLate() uintptr

func KCVImageBufferFieldDetailTemporalBottomFirst ¶

func KCVImageBufferFieldDetailTemporalBottomFirst() uintptr

func KCVImageBufferFieldDetailTemporalTopFirst ¶

func KCVImageBufferFieldDetailTemporalTopFirst() uintptr

func KCVImageBufferGammaLevelKey ¶

func KCVImageBufferGammaLevelKey() uintptr

func KCVImageBufferICCProfileKey ¶

func KCVImageBufferICCProfileKey() uintptr

func KCVImageBufferLogTransferFunctionKey ¶

func KCVImageBufferLogTransferFunctionKey() uintptr

@constant kCVImageBufferLogTransferFunctionKey Indicates that the transfer function or gamma of the content is a log format and identifies the specific log curve. @discussion The value is a CFString holding fully specified reverse DNS identifier. Log is a specific video format usually processed in a camera's ISP. A Log video format usually defines: Scene-referred color primaries designed to preserve the chromaticity range captured by a camera sensor. In cinematography, "scene-referred" color primaries refers to a color space designed to accurately preserve the chromaticity and dynamic range directly captured by a camera sensor. A specific gamma curve (or transfer characteristic) tailored to capturing the full dynamic range from the sensor. This gamma curve is usually shaped like a log curve (hence the name Log). A set of matrix transforms to go from RGB to Y'CbCr (Y'CbCr being the most common format used to store the bits compressed into a file). As described above, a Log video format defines a whole color space (even though the “log” part of the name comes only from the “transfer characteristic” or gamma curve) Content captured in Apple Log will have this key set to kCVImageBufferLogTransferFunction_AppleLog or kCVImageBufferLogTransferFunction_AppleLog2. @constant kCVImageBufferLogTransferFunction_AppleLog Indicates the Apple Log identifier. @constant kCVImageBufferLogTransferFunction_AppleLog2 Indicates the Apple Log 2 identifier. To use Apple Log 2, set other color attachments as follows: kCVImageBufferColorPrimariesKey = undefined or absent kCVImageBufferTransferFunctionKey = undefined or absent kCVImageBufferYCbCrMatrixKey = kCVImageBufferYCbCrMatrix_ITU_R_2020 https://developer.apple.com/download/all/?q=Apple%20log%20profile @discussion You can download the Apple Log Profile White Paper from the Apple Developer Downloads website.

func KCVImageBufferLogTransferFunction_AppleLog ¶

func KCVImageBufferLogTransferFunction_AppleLog() uintptr

func KCVImageBufferLogTransferFunction_AppleLog2 ¶

func KCVImageBufferLogTransferFunction_AppleLog2() uintptr

func KCVImageBufferMasteringDisplayColorVolumeKey ¶

func KCVImageBufferMasteringDisplayColorVolumeKey() uintptr

func KCVImageBufferPixelAspectRatioHorizontalSpacingKey ¶

func KCVImageBufferPixelAspectRatioHorizontalSpacingKey() uintptr

func KCVImageBufferPixelAspectRatioKey ¶

func KCVImageBufferPixelAspectRatioKey() uintptr

func KCVImageBufferPixelAspectRatioVerticalSpacingKey ¶

func KCVImageBufferPixelAspectRatioVerticalSpacingKey() uintptr

func KCVImageBufferPostDecodeProcessingFrameMetadataKey ¶

func KCVImageBufferPostDecodeProcessingFrameMetadataKey() uintptr

func KCVImageBufferPostDecodeProcessingSequenceMetadataKey ¶

func KCVImageBufferPostDecodeProcessingSequenceMetadataKey() uintptr

func KCVImageBufferPreferredCleanApertureKey ¶

func KCVImageBufferPreferredCleanApertureKey() uintptr

func KCVImageBufferRegionOfInterestKey ¶

func KCVImageBufferRegionOfInterestKey() uintptr

@constant kCVImageBufferRegionOfInterestKey @abstract Specifies region of interest that image statistics cover. @discussion This value should be a CGRect dictionary created by CGRectCreateDictionaryRepresentation(). The origin in the CGRect represents the x,y coordinate within the CVPixelBuffer where region of interest is located.

func KCVImageBufferSceneIlluminationKey ¶

func KCVImageBufferSceneIlluminationKey() uintptr

func KCVImageBufferTransferFunctionKey ¶

func KCVImageBufferTransferFunctionKey() uintptr

func KCVImageBufferTransferFunction_EBU_3213 ¶

func KCVImageBufferTransferFunction_EBU_3213() uintptr

func KCVImageBufferTransferFunction_ITU_R_709_2 ¶

func KCVImageBufferTransferFunction_ITU_R_709_2() uintptr

func KCVImageBufferTransferFunction_ITU_R_2020 ¶

func KCVImageBufferTransferFunction_ITU_R_2020() uintptr

func KCVImageBufferTransferFunction_ITU_R_2100_HLG ¶

func KCVImageBufferTransferFunction_ITU_R_2100_HLG() uintptr

func KCVImageBufferTransferFunction_Linear ¶

func KCVImageBufferTransferFunction_Linear() uintptr

func KCVImageBufferTransferFunction_SMPTE_240M_1995 ¶

func KCVImageBufferTransferFunction_SMPTE_240M_1995() uintptr

func KCVImageBufferTransferFunction_SMPTE_C ¶

func KCVImageBufferTransferFunction_SMPTE_C() uintptr

func KCVImageBufferTransferFunction_SMPTE_ST_428_1 ¶

func KCVImageBufferTransferFunction_SMPTE_ST_428_1() uintptr

func KCVImageBufferTransferFunction_SMPTE_ST_2084_PQ ¶

func KCVImageBufferTransferFunction_SMPTE_ST_2084_PQ() uintptr

func KCVImageBufferTransferFunction_UseGamma ¶

func KCVImageBufferTransferFunction_UseGamma() uintptr

func KCVImageBufferTransferFunction_sRGB ¶

func KCVImageBufferTransferFunction_sRGB() uintptr

func KCVImageBufferYCbCrMatrixKey ¶

func KCVImageBufferYCbCrMatrixKey() uintptr

func KCVImageBufferYCbCrMatrix_ITU_R_601_4 ¶

func KCVImageBufferYCbCrMatrix_ITU_R_601_4() uintptr

func KCVImageBufferYCbCrMatrix_ITU_R_709_2 ¶

func KCVImageBufferYCbCrMatrix_ITU_R_709_2() uintptr

func KCVImageBufferYCbCrMatrix_SMPTE_240M_1995 ¶

func KCVImageBufferYCbCrMatrix_SMPTE_240M_1995() uintptr

func KCVMetalBufferCacheMaximumBufferAgeKey ¶

func KCVMetalBufferCacheMaximumBufferAgeKey() uintptr

func KCVMetalTextureCacheMaximumTextureAgeKey ¶

func KCVMetalTextureCacheMaximumTextureAgeKey() uintptr

func KCVMetalTextureStorageMode ¶

func KCVMetalTextureStorageMode() uintptr

@discussion kCVMetalTextureStorageMode is a property that can be placed on a CVMetalTextureCache to instruct the MTLTextureStorageMode of the created MTLTexture. Values for this can can be read from MTLTexture.h

func KCVMetalTextureUsage ¶

func KCVMetalTextureUsage() uintptr

@discussion kCVMetalTextureUsage is a property that can be placed on a CVMetalTextureCache to instruct the MTLTextureUsage of the created MTLTexture. Values for this can can be read from MTLTexture.h

func KCVOpenGLBufferHeight ¶

func KCVOpenGLBufferHeight() uintptr

func KCVOpenGLBufferInternalFormat ¶

func KCVOpenGLBufferInternalFormat() uintptr

func KCVOpenGLBufferMaximumMipmapLevel ¶

func KCVOpenGLBufferMaximumMipmapLevel() uintptr

func KCVOpenGLBufferPoolMaximumBufferAgeKey ¶

func KCVOpenGLBufferPoolMaximumBufferAgeKey() uintptr

func KCVOpenGLBufferPoolMinimumBufferCountKey ¶

func KCVOpenGLBufferPoolMinimumBufferCountKey() uintptr

func KCVOpenGLBufferTarget ¶

func KCVOpenGLBufferTarget() uintptr

func KCVOpenGLBufferWidth ¶

func KCVOpenGLBufferWidth() uintptr

func KCVOpenGLTextureCacheChromaSamplingModeAutomatic ¶

func KCVOpenGLTextureCacheChromaSamplingModeAutomatic() uintptr

func KCVOpenGLTextureCacheChromaSamplingModeBestPerformance ¶

func KCVOpenGLTextureCacheChromaSamplingModeBestPerformance() uintptr

func KCVOpenGLTextureCacheChromaSamplingModeHighestQuality ¶

func KCVOpenGLTextureCacheChromaSamplingModeHighestQuality() uintptr

func KCVOpenGLTextureCacheChromaSamplingModeKey ¶

func KCVOpenGLTextureCacheChromaSamplingModeKey() uintptr

func KCVPixelBufferBytesPerRowAlignmentKey ¶

func KCVPixelBufferBytesPerRowAlignmentKey() uintptr

func KCVPixelBufferCGBitmapContextCompatibilityKey ¶

func KCVPixelBufferCGBitmapContextCompatibilityKey() uintptr

func KCVPixelBufferCGImageCompatibilityKey ¶

func KCVPixelBufferCGImageCompatibilityKey() uintptr

func KCVPixelBufferExtendedPixelsBottomKey ¶

func KCVPixelBufferExtendedPixelsBottomKey() uintptr

func KCVPixelBufferExtendedPixelsLeftKey ¶

func KCVPixelBufferExtendedPixelsLeftKey() uintptr

func KCVPixelBufferExtendedPixelsRightKey ¶

func KCVPixelBufferExtendedPixelsRightKey() uintptr

func KCVPixelBufferExtendedPixelsTopKey ¶

func KCVPixelBufferExtendedPixelsTopKey() uintptr

func KCVPixelBufferHeightKey ¶

func KCVPixelBufferHeightKey() uintptr

func KCVPixelBufferIOSurfaceCoreAnimationCompatibilityKey ¶

func KCVPixelBufferIOSurfaceCoreAnimationCompatibilityKey() uintptr

func KCVPixelBufferIOSurfaceOpenGLFBOCompatibilityKey ¶

func KCVPixelBufferIOSurfaceOpenGLFBOCompatibilityKey() uintptr

func KCVPixelBufferIOSurfaceOpenGLTextureCompatibilityKey ¶

func KCVPixelBufferIOSurfaceOpenGLTextureCompatibilityKey() uintptr

func KCVPixelBufferIOSurfacePropertiesKey ¶

func KCVPixelBufferIOSurfacePropertiesKey() uintptr

func KCVPixelBufferIOSurfacePurgeableKey ¶

func KCVPixelBufferIOSurfacePurgeableKey() uintptr

@const kCVPixelBufferIOSurfacePurgeableKey @abstract Key sets the IOSurface backed memory allocation for CVPixelBuffer as purgable and volatile. @discussion A purgeable IOSurface is capable of being switched between non-volatile, volatile and empty states using IOSurfaceSetPurgeable. When in the volatile state, the OS is permitted to instantly change its state to empty and remove all its memory pages. Clients should set the IOSurfaces to the non-volatile state while they are in use and the volatile state when their need and contents is optional/speculative and OK to discard in response to system memory demand. See IOSurfaceSetPurgeable for more details. This key is only effective for CVPixelBuffers that are backed by IOSurface.

func KCVPixelBufferMemoryAllocatorKey ¶

func KCVPixelBufferMemoryAllocatorKey() uintptr

func KCVPixelBufferMetalCompatibilityKey ¶

func KCVPixelBufferMetalCompatibilityKey() uintptr

func KCVPixelBufferOpenGLCompatibilityKey ¶

func KCVPixelBufferOpenGLCompatibilityKey() uintptr

func KCVPixelBufferOpenGLTextureCacheCompatibilityKey ¶

func KCVPixelBufferOpenGLTextureCacheCompatibilityKey() uintptr

func KCVPixelBufferPixelFormatTypeKey ¶

func KCVPixelBufferPixelFormatTypeKey() uintptr

func KCVPixelBufferPlaneAlignmentKey ¶

func KCVPixelBufferPlaneAlignmentKey() uintptr

func KCVPixelBufferPoolAllocationThresholdKey ¶

func KCVPixelBufferPoolAllocationThresholdKey() uintptr

func KCVPixelBufferPoolFreeBufferNotification ¶

func KCVPixelBufferPoolFreeBufferNotification() uintptr

func KCVPixelBufferPoolMaximumBufferAgeKey ¶

func KCVPixelBufferPoolMaximumBufferAgeKey() uintptr

func KCVPixelBufferPoolMinimumBufferCountKey ¶

func KCVPixelBufferPoolMinimumBufferCountKey() uintptr

func KCVPixelBufferProResRAWKey_BlackLevel ¶

func KCVPixelBufferProResRAWKey_BlackLevel() uintptr

@const kCVPixelBufferProResRAWKey_BlackLevel @abstract Buffer attachment key for sensel black level. @discussion Associated attachment is a CFNumber of type kCFNumberSInt32Type. The value is the sensel level corresponding to no light exposure. This attachment is required for buffers with either the bp16 or bp64 format.

func KCVPixelBufferProResRAWKey_ColorMatrix ¶

func KCVPixelBufferProResRAWKey_ColorMatrix() uintptr

@const kCVPixelBufferProResRAWKey_ColorMatrix @abstract Buffer attachment key for color translation matrix. @discussion Associated attachment is CFData containing an array of 9 32-bit floats. The value is a 3x3 matrix which transforms linear RGB pixel values in the camera native color space to CIE 1931 XYZ values relative to the D65 illuminant, where the matrix entries are stored in the CFData in row-major order. This attachment is required for buffers with either the bp16 or bp64 format.

func KCVPixelBufferProResRAWKey_GainFactor ¶

func KCVPixelBufferProResRAWKey_GainFactor() uintptr

@const kCVPixelBufferProResRAWKey_GainFactor @abstract Buffer attachment key for gain factor. @discussion Associated attachment is a CFNumber of type kCFNumberFloat32Type. The value is the overall gain factor for raw conversion. This attachment is required for buffers with either the bp16 or bp64 format.

func KCVPixelBufferProResRAWKey_MetadataExtension ¶

func KCVPixelBufferProResRAWKey_MetadataExtension() uintptr

@const kCVPixelBufferProResRAWKey_MetadataExtension @abstract Buffer attachment key for metadata extension. @discussion Associated attachment is CFData containing ProRes RAW metadata extension. This attachment is optional for buffers with either bp16 or bp64. The CFData contains a big-endian uint32 representing the size of the item in bytes followed by a 4-character code ('psim') followed by a variable-length pascal string identifying the metadata (like a key string) followed by the metadata payload.

func KCVPixelBufferProResRAWKey_RecommendedCrop ¶

func KCVPixelBufferProResRAWKey_RecommendedCrop() uintptr

@const kCVPixelBufferProResRAWKey_RecommendedCrop @abstract Buffer attachment key for recommended number of pixels/rows to discard from the sides of the image after raw conversion. @discussion Associated attachment is CFData containing an array of 4 32-bit floats. The four CFData array elements specify, in order, the recommended number of: pixels to discard from the start (left) of each row of the image; pixels to discard from the end (right) of each row of the image; rows of pixels to discard from the top of the image; and rows of pixels to discard from the bottom of the image. (Pixels/rows are discarded after raw conversion.) This attachment is optional for buffers with either the bp16 or bp64 format; if not present, the recommended crop values are considered to be 0. For buffers with the bp64 format, the values may be nonintegral due to downscaling, in which case the handling of fractional parts is implementation-dependent.

func KCVPixelBufferProResRAWKey_SenselSitingOffsets ¶

func KCVPixelBufferProResRAWKey_SenselSitingOffsets() uintptr

@const kCVPixelBufferProResRAWKey_SenselSitingOffsets @abstract Buffer attachment key for siting offsets, relative to pixel center, of individual sensels/components constituting each pixel. @discussion Associated attachment is CFData containing an array of 8 32-bit floats. The eight CFData array elements specify, in order, the following sensel/component offsets from pixel center: red horizontal offset, red vertical offset, green horizontal offset, green vertical offset, blue horizontal offset, blue vertical offset, alpha horizontal offset, and alpha vertical offset. A positive offset value indicates that the sensel/component lies to the right of or below the center of its pixel, while a negative value indicates that the sensel/component lies to the left of or above the center of its pixel. Horizontal and vertical offset magnitudes are respectively in terms of the spacing between horizontally- and vertically-adjacent pixel centers. This attachment applies only to buffers with the bp64 format, and is optional for those buffers; if not present, all offsets are considered to be 0.

func KCVPixelBufferProResRAWKey_WhiteBalanceBlueFactor ¶

func KCVPixelBufferProResRAWKey_WhiteBalanceBlueFactor() uintptr

@const kCVPixelBufferProResRAWKey_WhiteBalanceBlueFactor @abstract Buffer attachment key for white balance blue factor. @discussion Associated attachment is a CFNumber of type kCFNumberFloat32Type. The value is the white balance multiplication factor for blue-filtered sensels. This attachment is required for buffers with either the bp16 or bp64 format.

func KCVPixelBufferProResRAWKey_WhiteBalanceCCT ¶

func KCVPixelBufferProResRAWKey_WhiteBalanceCCT() uintptr

@const kCVPixelBufferProResRAWKey_WhiteBalanceCCT @abstract Buffer attachment key for illuminant correlated color temperature. @discussion Associated attachment is a CFNumber of type kCFNumberSInt32Type. The value is the illuminant correlated color temperature (CCT), in kelvins, selected at the time of capture. May be 0, indicating that the CCT is unknown or unspecified. This attachment is optional for buffers with either the bp16 or bp64 format; if not present, the CCT is considered unknown or unspecified.

func KCVPixelBufferProResRAWKey_WhiteBalanceRedFactor ¶

func KCVPixelBufferProResRAWKey_WhiteBalanceRedFactor() uintptr

@const kCVPixelBufferProResRAWKey_WhiteBalanceRedFactor @abstract Buffer attachment key for white balance red factor. @discussion Associated attachment is a CFNumber of type kCFNumberFloat32Type. The value is the white balance multiplication factor for red-filtered sensels. This attachment is required for buffers with either the bp16 or bp64 format.

func KCVPixelBufferProResRAWKey_WhiteLevel ¶

func KCVPixelBufferProResRAWKey_WhiteLevel() uintptr

@const kCVPixelBufferProResRAWKey_WhiteLevel @abstract Buffer attachment key for sensel white level. @discussion Associated attachment is a CFNumber of type kCFNumberSInt32Type. The value is the sensel level corresponding to sensor (or camera A-to-D converter) saturation. This attachment is required for buffers with either the bp16 or bp64 format.

func KCVPixelBufferVersatileBayerKey_BayerPattern ¶

func KCVPixelBufferVersatileBayerKey_BayerPattern() uintptr

@const kCVPixelBufferVersatileBayerKey_BayerPattern @abstract Buffer attachment key for code indicating Bayer pattern (sensel arrangement). @discussion Associated attachment is a CFNumber of type kCFNumberSInt32Type. The value follows the semantics of the ProRes RAW bayer_pattern bitstream syntax element, namely 0, 1, 2, or 3, where 0 means the top-left sensel of the frame is red-filtered ("RGGB"); 1 means the top-left sensel of the frame is green-filtered, with the top row alternating between green- and red-filtered sensels ("GRBG"); 2 means the top-left sensel of the frame is green- filtered, with the top row alternating between green- and blue-filtered sensels ("GBRG"); and 3 means the top-left sensel of the frame is blue-filtered ("BGGR"). This attachment applies only to buffers with VersatileBayer formats.

func KCVPixelBufferWidthKey ¶

func KCVPixelBufferWidthKey() uintptr

func KCVPixelFormatBitsPerBlock ¶

func KCVPixelFormatBitsPerBlock() uintptr

func KCVPixelFormatBitsPerComponent ¶

func KCVPixelFormatBitsPerComponent() uintptr

func KCVPixelFormatBlackBlock ¶

func KCVPixelFormatBlackBlock() uintptr

func KCVPixelFormatBlockHeight ¶

func KCVPixelFormatBlockHeight() uintptr

func KCVPixelFormatBlockHorizontalAlignment ¶

func KCVPixelFormatBlockHorizontalAlignment() uintptr

func KCVPixelFormatBlockVerticalAlignment ¶

func KCVPixelFormatBlockVerticalAlignment() uintptr

func KCVPixelFormatBlockWidth ¶

func KCVPixelFormatBlockWidth() uintptr

func KCVPixelFormatCGBitmapContextCompatibility ¶

func KCVPixelFormatCGBitmapContextCompatibility() uintptr

func KCVPixelFormatCGBitmapInfo ¶

func KCVPixelFormatCGBitmapInfo() uintptr

func KCVPixelFormatCGImageCompatibility ¶

func KCVPixelFormatCGImageCompatibility() uintptr

func KCVPixelFormatCodecType ¶

func KCVPixelFormatCodecType() uintptr

func KCVPixelFormatComponentRange ¶

func KCVPixelFormatComponentRange() uintptr

func KCVPixelFormatComponentRange_FullRange ¶

func KCVPixelFormatComponentRange_FullRange() uintptr

func KCVPixelFormatComponentRange_VideoRange ¶

func KCVPixelFormatComponentRange_VideoRange() uintptr

func KCVPixelFormatComponentRange_WideRange ¶

func KCVPixelFormatComponentRange_WideRange() uintptr

func KCVPixelFormatConstant ¶

func KCVPixelFormatConstant() uintptr

func KCVPixelFormatContainsAlpha ¶

func KCVPixelFormatContainsAlpha() uintptr

func KCVPixelFormatContainsGrayscale ¶

func KCVPixelFormatContainsGrayscale() uintptr

func KCVPixelFormatContainsRGB ¶

func KCVPixelFormatContainsRGB() uintptr

func KCVPixelFormatContainsSenselArray ¶

func KCVPixelFormatContainsSenselArray() uintptr

func KCVPixelFormatContainsYCbCr ¶

func KCVPixelFormatContainsYCbCr() uintptr

func KCVPixelFormatFillExtendedPixelsCallback ¶

func KCVPixelFormatFillExtendedPixelsCallback() uintptr

func KCVPixelFormatFourCC ¶

func KCVPixelFormatFourCC() uintptr

func KCVPixelFormatHorizontalSubsampling ¶

func KCVPixelFormatHorizontalSubsampling() uintptr

func KCVPixelFormatName ¶

func KCVPixelFormatName() uintptr

func KCVPixelFormatOpenGLCompatibility ¶

func KCVPixelFormatOpenGLCompatibility() uintptr

func KCVPixelFormatOpenGLFormat ¶

func KCVPixelFormatOpenGLFormat() uintptr

func KCVPixelFormatOpenGLInternalFormat ¶

func KCVPixelFormatOpenGLInternalFormat() uintptr

func KCVPixelFormatOpenGLType ¶

func KCVPixelFormatOpenGLType() uintptr

func KCVPixelFormatPlanes ¶

func KCVPixelFormatPlanes() uintptr

func KCVPixelFormatQDCompatibility ¶

func KCVPixelFormatQDCompatibility() uintptr

func KCVPixelFormatVerticalSubsampling ¶

func KCVPixelFormatVerticalSubsampling() uintptr

func SymbolAvailable ¶

func SymbolAvailable(symbol string) bool

SymbolAvailable reports whether the named C symbol was bound when the library loaded. Calling a generated wrapper whose symbol is unavailable dereferences a nil function variable and panics.