At Mon, 16 Oct 2006 13:41:02 +0200, Assaf Hoffman wrote: > > Hi, > As I understand, the IEC958 frame incorporates not only sound sample but > also other information such as user data and channel status. > I could not locate in the CMIPCI driver where the user data or channel > status is read/write from/to the device and where is it kept on DRAM. This depends on the chip model. With the earlier chip, you have to use 32bit SPDIF "raw" data including SPDIF status bits and data. The soft_ac3 corresponding to this. In the ALSA framework, alsa-lib encodes/decodes the SPDIF raw data. The recent version of chip has some register bits to indicate the non-audio data. The driver sets them up accordingly. Then the 16bit data is handled as is without modification. Takashi ------------------------------------------------------------------------- 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
