Hi, I have a few queries on buffer pointer updation during playback operation with DMA transfer. I have gone through the documents, but some are not very clear. I have 64KB DMA buffer and 16KB period size. I'm using runtime->dma_addr as the DMA source (physical address). Is this right? This address never getting changed during run time. I get interrupt in 16K periods. Should I add the 16KB offset to the runtime->dma_addr for next block of data transmission? And should it be wrapped around to runtime->dma_addr after 64KB transfer? I tried some of these, but the sound gererated is not proper. The runtime->status->hw_ptr also seen as a constant during run time. The pointer call backs are returned with the number of frames transmitted (offset from the buffer start address).
Could you please give your suggestions ? Thanks, Prince __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
