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Julius 4.2
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Parameters for one direction (input or output) of a stream. [詳細]
#include <portaudio.h>
変数 | |
| PaDeviceIndex | device |
| A valid device index in the range 0 to (Pa_GetDeviceCount()-1) specifying the device to be used or the special constant paUseHostApiSpecificDeviceSpecification which indicates that the actual device(s) to use are specified in hostApiSpecificStreamInfo. | |
| int | channelCount |
| The number of channels of sound to be delivered to the stream callback or accessed by Pa_ReadStream() or Pa_WriteStream(). | |
| PaSampleFormat | sampleFormat |
| The sample format of the buffer provided to the stream callback, a_ReadStream() or Pa_WriteStream(). | |
| PaTime | suggestedLatency |
| The desired latency in seconds. | |
| void * | hostApiSpecificStreamInfo |
| An optional pointer to a host api specific data structure containing additional information for device setup and/or stream processing. | |
Parameters for one direction (input or output) of a stream.
portaudio.h の 482 行で定義されています。
A valid device index in the range 0 to (Pa_GetDeviceCount()-1) specifying the device to be used or the special constant paUseHostApiSpecificDeviceSpecification which indicates that the actual device(s) to use are specified in hostApiSpecificStreamInfo.
This field must not be set to paNoDevice.
portaudio.h の 490 行で定義されています。
参照元 adin_mic_open().
The number of channels of sound to be delivered to the stream callback or accessed by Pa_ReadStream() or Pa_WriteStream().
It can range from 1 to the value of maxInputChannels in the PaDeviceInfo record for the device specified by the device parameter.
portaudio.h の 497 行で定義されています。
参照元 adin_mic_open().
The sample format of the buffer provided to the stream callback, a_ReadStream() or Pa_WriteStream().
It may be any of the formats described by the PaSampleFormat enumeration.
portaudio.h の 503 行で定義されています。
参照元 adin_mic_open().
The desired latency in seconds.
Where practical, implementations should configure their latency based on these parameters, otherwise they may choose the closest viable latency instead. Unless the suggested latency is greater than the absolute upper limit for the device implementations should round the suggestedLatency up to the next practial value - ie to provide an equal or higher latency than suggestedLatency wherever possibe. Actual latency values for an open stream may be retrieved using the inputLatency and outputLatency fields of the PaStreamInfo structure returned by Pa_GetStreamInfo().
portaudio.h の 516 行で定義されています。
参照元 adin_mic_open().
An optional pointer to a host api specific data structure containing additional information for device setup and/or stream processing.
hostApiSpecificStreamInfo is never required for correct operation, if not used it should be set to NULL.
portaudio.h の 523 行で定義されています。
1.7.4