Radivoje Jovanovic wrote: > I am developing driver for a really simple hardware. Hardware has codec that > supports mono/stereo and the amplifier that supports only one speaker so the > driver has to be mono driver and the codec is setup to manage mono data. I > have setup ALSA with following parameters: > > .info = (SNDRV_PCM_INFO_NONINTERLEAVED | Better use SNDRV_PCM_INFO_INTERLEAVED; this is the format used by almost all (stereo) sound cards, and so it is expected even for mono files (where there actually isn't any difference). > after each buffer iteration ALSA skips the buffer length of the data?! This might be a problem with the reporting of the DMA pointer. Please explain (or show) how your DMA works and how the pointer callback is implemented. > I have tried SNDRV_PCM_INFO_INTERLEAVED with the same results (in this > case ALSA will not even try to play stereo files using my mono driver). When using the "default" or "plughw" device, alsa-lib will automatically convert the sample format. Regards, Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
