Thank you, for your answer. I do not understand how does it work? Obviously, the ALSA stack does not have such format, and by trying to extract the buffer (capture example) the stack will assume 32-bit sample width, getting trash on the lower 12 bits. Please explain. Thanks. -----Original Message----- From: Giuliano Pochini [mailto:pochini@xxxxxxxx] Sent: Sunday, October 22, 2006 8:56 PM To: Assaf Hoffman Cc: alsa-devel@xxxxxxxxxxxxxxxxxxxxx; Rita Shtern Subject: Re: PCM format 20 bit Importance: Low On Sun, 22 Oct 2006 18:11:55 +0200 "Assaf Hoffman" <hoffman@xxxxxxxxxxx> wrote: > My HW supports 20-bit sample using 32-bit phy frame. As I understand, > the only way the ALSA supports the 20-bit sample is 24-bit frame > (SNDRV_PCM_FORMAT_x20_3xE). > > Please advice. If it's 20 bits left-aligned in 32 bits, you can use S32_LE or similar formats. For example the old echoaudio cards based on the DSP 56301 use S32_LE but only the upper 20 bits contain data. -- Giuliano. ------------------------------------------------------------------------- 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
