66 řádky
2.0 KiB
C
66 řádky
2.0 KiB
C
#ifndef cmAudioNrtDev_h
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#define cmAudioNrtDev_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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cmApRC_t cmApNrtAllocate( cmRpt_t* rpt );
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cmApRC_t cmApNrtFree();
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cmApRC_t cmApNrtCreateDevice(
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const cmChar_t* label,
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double srate,
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unsigned iChCnt,
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unsigned oChCnt,
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unsigned cbPeriodMs );
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/// Setup the audio port management object for this machine.
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cmApRC_t cmApNrtInitialize( cmRpt_t* rpt, unsigned baseApDevIdx );
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/// Stop all audio devices and release any resources held
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/// by the audio port management object.
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cmApRC_t cmApNrtFinalize();
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/// Return the count of audio devices attached to this machine.
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unsigned cmApNrtDeviceCount();
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/// Get a textual description of the device at index 'devIdx'.
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const char* cmApNrtDeviceLabel( unsigned devIdx );
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/// Get the count of audio input or output channesl on device at index 'devIdx'.
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unsigned cmApNrtDeviceChannelCount( unsigned devIdx, bool inputFl );
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/// Get the current sample rate of a device. Note that if the device has both
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/// input and output capability then the sample rate is the same for both.
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double cmApNrtDeviceSampleRate( unsigned devIdx );
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/// Get the count of samples per callback for the input or output for this device.
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unsigned cmApNrtDeviceFramesPerCycle( unsigned devIdx, bool inputFl );
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/// Configure a device.
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cmApRC_t cmApNrtDeviceSetup(
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unsigned devIdx,
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double srate,
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unsigned framesPerCycle,
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cmApCallbackPtr_t callbackPtr,
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void* userCbPtr );
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/// Start a device. Note that the callback may be made prior to this function returning.
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cmApRC_t cmApNrtDeviceStart( unsigned devIdx );
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/// Stop a device.
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cmApRC_t cmApNrtDeviceStop( unsigned devIdx );
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/// Return true if the device is currently started.
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bool cmApNrtDeviceIsStarted( unsigned devIdx );
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#ifdef __cplusplus
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}
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#endif
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#endif
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