Low Latency Real-Time Audio Streaming
First Claim
Patent Images
1. A computing device comprising:
- configuring means to configure, by an adapter driver associated with an audio device and a wave real-time (WaveRT) port driver associated with the computing device, direct access by a client of the computing device and by the audio device to a cyclic buffer for rendering and/or capturing an audio stream; and
monitoring means to monitor hardware position register values to determine latency between a write position and a play position in the cyclic buffer, the monitoring not requiring a transition from kernel-mode.
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Abstract
Systems and methods for audio streaming in a computing device are described. In one aspect an interface to an adapter driver is provided. The adapter driver is associated with an audio device. The adapter driver and a wave real-time (WaveRT) port driver associated with the computing device use the interface to configure direct access by a client of the computing device and by the audio device to a cyclic buffer. The direct access is for rendering and/or capturing an audio stream. The direct access is independent of any copying by a port driver on the computer system of the audio stream to any buffer
51 Citations
20 Claims
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1. A computing device comprising:
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configuring means to configure, by an adapter driver associated with an audio device and a wave real-time (WaveRT) port driver associated with the computing device, direct access by a client of the computing device and by the audio device to a cyclic buffer for rendering and/or capturing an audio stream; and monitoring means to monitor hardware position register values to determine latency between a write position and a play position in the cyclic buffer, the monitoring not requiring a transition from kernel-mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for audio streaming in a computing device comprising:
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configuring, by an adapter driver associated with an audio device and a wave real-time (WaveRT) port driver associated with the computing device, direct access by a client of the computing device and by the audio device to a cyclic buffer for rendering and/or capturing an audio stream; and monitoring hardware position register values to determine latency between a write position and a play position in the cyclic buffer, the monitoring not requiring a transition from kernel-mode. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A computer-readable medium having stored thereon computer-program instructions for audio streaming in a computing device, the computer-program instructions being executable by a processor, the computer-program instructions comprising instructions for:
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configuring, by an adapter driver associated with an audio device and a wave real-time (WaveRT) port driver associated with the computing device, direct access by a client of the computing device and by the audio device to a cyclic buffer for rendering and/or capturing an audio stream; and monitoring hardware position register values to determine latency between a write position and a play position in the cyclic buffer, the monitoring not requiring a transition from kernel-mode. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification