Zephiris wrote: > I'm trying to get the ATI IXP driver to use hardware mixing. > [...] all I want is to know is what to change in the source that needs > to support it, since several glances through the source and brief API > docs, as well as mailing lists, etc, don't reveal effectively nothing > supporting hardware mixing at all. It's documented in the description of snd_pcm_new() in the section "Constructors": | The fourth and fifth arguments are the number of substreams for | playback and capture, respectively. [...] | If a chip supports multiple playbacks or captures, you can specify | more numbers, but they must be handled properly in open/close, etc. | callbacks. When you need to know which substream you are referring to, | then it can be obtained from struct snd_pcm_substream data passed to | each callback as follows: | | struct snd_pcm_substream *substream; | int index = substream->number; Then you have to use that index to access the corresponding DMA engine of the hardware. Regards, Clemens ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
