Function

CMAudioFormatDescriptionCopyAsBigEndianSoundDescriptionBlockBuffer(allocator:audioFormatDescription:flavor:blockBufferOut:)

Copies the contents of a CMAudioFormatDescription to a CMBlockBuffer in big-endian byte ordering.

Declaration

func CMAudioFormatDescriptionCopyAsBigEndianSoundDescriptionBlockBuffer(allocator: CFAllocator?, audioFormatDescription: CMAudioFormatDescription, flavor: CMSoundDescriptionFlavor?, blockBufferOut: UnsafeMutablePointer<CMBlockBuffer?>) -> OSStatus

Parameters

allocator

Allocator to use for allocating the CMBlockBuffer object. May be NULL.

audioFormatDescription

CMAudioFormatDescription to be copied.

soundDescriptionFlavor

kCMSoundDescriptionFlavor constant or NULL for QuickTimeMovie flavor.

soundDescriptionBlockBufferOut

Receives new CMBlockBuffer containing SoundDescription data structure in big-endian byte ordering.

Discussion

On return, the caller owns the returned CMBlockBuffer, and must release it when done with it.

See Also

Audio-Specific Functions

func CMAudioFormatDescriptionGetChannelLayout(CMAudioFormatDescription, sizeOut: UnsafeMutablePointer<Int>?) -> UnsafePointer<AudioChannelLayout>?

Returns a read-only pointer to (and size of) the AudioChannelLayout inside an audio CMFormatDescription.

func CMAudioFormatDescriptionGetFormatList(CMAudioFormatDescription, sizeOut: UnsafeMutablePointer<Int>?) -> UnsafePointer<AudioFormatListItem>?

Returns a read-only pointer to (and size of) the array of AudioFormatListItem structs inside an audio CMFormatDescription.

func CMAudioFormatDescriptionGetMagicCookie(CMAudioFormatDescription, sizeOut: UnsafeMutablePointer<Int>?) -> UnsafeRawPointer?

Returns a read-only pointer to (and size of) the magic cookie inside an audio CMFormatDescription.

func CMAudioFormatDescriptionGetMostCompatibleFormat(CMAudioFormatDescription) -> UnsafePointer<AudioFormatListItem>?

Returns a read-only pointer to the appropriate AudioFormatListItem inside an audio CMFormatDescription.

func CMAudioFormatDescriptionGetRichestDecodableFormat(CMAudioFormatDescription) -> UnsafePointer<AudioFormatListItem>?

Returns a read-only pointer to the appropriate AudioFormatListItem inside an audio CMFormatDescription.

func CMAudioFormatDescriptionGetStreamBasicDescription(CMAudioFormatDescription) -> UnsafePointer<AudioStreamBasicDescription>?

Returns a read-only pointer to the AudioStreamBasicDescription inside an audio CMFormatDescription.

func CMDoesBigEndianSoundDescriptionRequireLegacyCBRSampleTableLayout(CMBlockBuffer, flavor: CMSoundDescriptionFlavor?) -> Bool

Examine a big-endian SoundDescription data structure in a CMBlockBuffer, and report whether the sample tables will need to use the legacy CBR layout.

func CMSwapBigEndianSoundDescriptionToHost(UnsafeMutablePointer<UInt8>, Int) -> OSStatus

Converts a SoundDescription data structure from big-endian to host-endian in place.

func CMSwapHostEndianSoundDescriptionToBig(UnsafeMutablePointer<UInt8>, Int) -> OSStatus

Converts a SoundDescription data structure from host-endian to big-endian in place.

Beta Software

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