Developer Documentation

QuickTime 4 API Documentation

Inside Macintosh: Sound

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Sound Component Features Flags

You can use the following constants to define features of your sound component. You use some combination of these constants to set bits in the componentFlags field of a component description record, which is contained in a 'thng' resource. These bits represent the kind of data your component can receive as input, the kind of data your component can produce as output, the operations your component can perform, and the performance of your component.

#define k8BitRawIn                          (1 << 0)        /*data flags*/
#define k8BitTwosIn                         (1 << 1)
#define k16BitIn                            (1 << 2)
#define kStereoIn                           (1 << 3)
#define k8BitRawOut                         (1 << 8)
#define k8BitTwosOut                        (1 << 9)
#define k16BitOut                           (1 << 10)
#define kStereoOut                          (1 << 11)
#define kReverse                            (1 << 16)       /*action flags*/
#define kRateConvert                        (1 << 17)
#define kCreateSoundSource                  (1 << 18)
#define kHighQuality                        (1 << 22)       /*performance flags*/
#define kRealTime                           (1 << 23)

Constant descriptions

k8BitRawIn
The component can accept 8 bit offset binary data as input.
k8BitTwosIn
The component can accept 8 bit two's complement data as input.
k16BitIn
The component can accept 16 bit data as input. 16 bit data is always in two's complement format.
kStereoIn
The component can accept stereo data as input.
k8BitRawOut
The component can produce 8 bit offset binary data as output.
k8BitTwosOut
The component can produce 8 bit two's complement data as output.
k16BitOut
The component can produce 16 bit data as output. 16 bit data is always in two's complement format.
kStereoOut
The component can produce stereo data as output.
kReverse
The component can accept reversed audio data.
kRateConvert
The component can convert sample rates.
kCreateSoundSource
The component can create sound sources.
kHighQuality
The component can produce high quality output.
kRealTime
The component can operate in real time.
© 1999 Apple Computer, Inc.

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