I'm cool with this, but I'll defer to an audio wiz...
Is this for head? nepx130?
On Sat, 2005-01-15 at 22:22, Ryan Gammon wrote:
> The i810_audio driver supports really weird sample rates. Eg:
> 44100 -> 43512
> 48000 -> 47360
>
> In addition, some i810's only support 48000 as a sample rate -- I added
> this rate to the list.
>
> The i810 driver bases its rates off rates like 48000 and factors in an
> offset based on DMA transfer rate (see i810_configure_clocking() in
> i810_audio.c) which accounts for the discrepancy.
>
> As the OSS driver already has a 1% fudge factor in it for the requested
> vs supplied sample rate, the quick & dirty fix is to bump that factor up
> to 2%, which gets it working on my machine at home :)
>
>
>
> ______________________________________________________________________
> Index: client/audiosvc/hxaudses.cpp
> ===================================================================
> RCS file: /cvsroot/client/audiosvc/hxaudses.cpp,v
> retrieving revision 1.39.2.3.2.1
> diff -u -r1.39.2.3.2.1 hxaudses.cpp
> --- client/audiosvc/hxaudses.cpp 13 Dec 2004 23:12:44 -0000
> 1.39.2.3.2.1
> +++ client/audiosvc/hxaudses.cpp 16 Jan 2005 05:56:46 -0000
> @@ -162,7 +162,8 @@
> 16000,
> 22050,
> 32000,
> - 44100
> + 44100,
> + 48000
> };
> #else
> const unsigned short z_anValidSampleRates[] = { 11025,
> Index: audio/device/platform/unix/audlinux_oss.cpp
> ===================================================================
> RCS file: /cvsroot/audio/device/platform/unix/audlinux_oss.cpp,v
> retrieving revision 1.6.18.1
> diff -u -r1.6.18.1 audlinux_oss.cpp
> --- audio/device/platform/unix/audlinux_oss.cpp 9 Jul 2004 02:01:42 -0000
> 1.6.18.1
> +++ audio/device/platform/unix/audlinux_oss.cpp 16 Jan 2005 05:56:58 -0000
> @@ -677,8 +677,11 @@
> //instead of 44100 (.2%) and 7984 instead of 8000 (.6%).
> //So, if we are close enough just say it is OK.
> //How about 1%?
> +
> + //XXXRGG: i810 gives sample rates like 43512 for 44100 (1.3%), how
> + //about 2%?
> fTmp = (float)ulTmp/(float)pFormat->ulSamplesPerSec;
> - if( fabs(1.0-fTmp) > .01 )
> + if( fabs(1.0-fTmp) > .02 )
> {
> //It is NOT supported
> retCode = RA_AOE_BADFORMAT;
>
> ______________________________________________________________________
> _______________________________________________
> Audio-dev mailing list
> [email protected]
> http://lists.helixcommunity.org/mailman/listinfo/audio-dev
--
Nicholas Hart
[EMAIL PROTECTED]
Technical Lead, Helix Player
https://player.helixcommunity.org
http://www.real.com
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