Function

CMAudioFormatDescriptionCreateFromBigEndianSoundDescriptionBlockBuffer(allocator:bigEndianSoundDescriptionBlockBuffer:flavor:formatDescriptionOut:)

Creates a CMAudioFormatDescription from a big-endian SoundDescription data structure in a CMBlockBuffer.

Declaration

func CMAudioFormatDescriptionCreateFromBigEndianSoundDescriptionBlockBuffer(allocator: CFAllocator?, bigEndianSoundDescriptionBlockBuffer soundDescriptionBlockBuffer: CMBlockBuffer, flavor: CMSoundDescriptionFlavor?, formatDescriptionOut: UnsafeMutablePointer<CMAudioFormatDescription?>) -> OSStatus

Parameters

allocator

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

soundDescriptionBlockBuffer

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

soundDescriptionFlavor

kCMSoundDescriptionFlavor constant or NULL for QuickTimeMovie flavor.

audioFormatDescriptionOut

Receives new CMAudioFormatDescription.

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.