Interleaved/Multichannel audio programming with ALSA on linux-2.6.23.9 kernel
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Interleaved/Multichannel audio programming with ALSA on linux-2.6.23.9 kernel
Hi,
I'm using the alsa driver built-in to the linux-2.6.23.9 kernel for the VIA VT1724 (linux/sound/pci/ice1712/ice1724.c) audio controller. The controller has 5 playback DMA and 2 record DMA channels. Out of the 5 playback DMA channels, first 4 channels can be used in interleaved mode or as 4 independent stereo channels. As studied from the driver, it is creating 3 snd_pcm_hw structrues, namely,
When the kernel is built and run, the alsa driver has created to two audio device nodes: /dev/dsp and /dev/audio. There are even no extra nodes like /dev/dsp1, /dev/dsp2, etc.
I want to open each [Playback/Record]DMA channel independently.
Any help ?
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