Audio source system and method
View Patent ↗A system and method for providing an audio source to an audio hardware device is disclosed. The system includes a detection module to detect a first audio input and a selection module to selectively provide the first audio input at an audio output to an audio device after the first audio input has been detected. The system also includes an emulation module to provide hardware emulation information corresponding to feedback data of the audio device after the first audio input has been detected.
1. A method, comprising:
detecting a first audio data stream at a first audio input while a second audio data stream is received at a second audio input from an audio source that is synchronized with an output device;
switching a connection with the output device from the second audio input to the first audio input after the first audio data stream has been detected, the second audio input continuing to receive the second audio data stream after the switch to the first audio input; and
providing hardware emulation information to the audio source of the second audio data stream, the hardware emulation information simulating synchronization between the audio source and the output device.
2. The method of claim 1 , wherein the first audio data stream is provided by an audio stream input/output (ASIO) source and wherein the second audio data stream is provided by an application driver.
3. The method of claim 1 , further comprising:
detecting an end of the first audio data stream; and
switching from the first audio input to the second audio input after detecting the end of the first audio data stream.
4. The method of claim 1 , wherein the first audio data stream is associated with a low-latency audio application and the second audio data stream is associated with a higher latency audio application than the first stream.
5. The method of claim 1 , wherein the hardware emulation information includes audio stream location information associated with the second audio data stream.
6. The method of claim 5 , wherein the audio stream location information includes information based on a direct memory access (DMA) pointer.
7. The method of claim 5 , wherein the audio stream location information is based on a bit depth associated with the second audio data stream.
8. The method of claim 5 , wherein the audio stream location information is based on a sample rate associated with the second audio data stream.
9. The method of claim 5 , wherein the audio stream location information is based on a number of audio channels associated with the second audio data stream.
10. The method of claim 1 , further comprising, prior to switching the connection with the output device from the second audio input to the first audio input, buffering the first audio stream while performing a fade-out operation on the second audio data stream.
11. The method of claim 10 , further comprising performing a fade-in operation on the buffered first audio data stream after switching the connection with the output device from the second audio input to the first audio input.
12. A computer readable media having an embedded computer program, the computer program comprising:
instructions to detect a first audio data stream at a first audio input while a second audio data stream is received at a second audio input from an audio source that is synchronized with an output device;
instructions to switch a connection of the output device from the second audio input to the first audio input after the first audio data stream has been detected, the second audio input continuing to receive the second audio data stream after the switch to the first audio input; and
instructions to provide hardware emulation information to the audio source of the second audio data stream, the hardware emulation information simulating synchronization between the audio source and the output device.
13. The computer readable media of claim 12 , further comprising:
instructions to detect an end of the first audio data stream;
instructions to switch from the first audio input to the second audio input after the end of the first audio data stream has been detected.
14. The computer readable media of claim 12 , wherein the first audio data stream is provided by an audio stream input/output (ASIO) source and wherein the second audio data stream is provided by an application driver source.