#
256281 |
|
10-Oct-2013 |
gjb |
Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.
Approved by: re (implicit) Sponsored by: The FreeBSD Foundation |
#
193640 |
|
07-Jun-2009 |
ariff |
Sound Mega-commit. Expect further cleanup until code freeze.
For a slightly thorough explaination, please refer to [1] http://people.freebsd.org/~ariff/SOUND_4.TXT.html .
Summary of changes includes:
1 Volume Per-Channel (vpc). Provides private / standalone volume control unique per-stream pcm channel without touching master volume / pcm. Applications can directly use SNDCTL_DSP_[GET|SET][PLAY|REC]VOL, or for backwards compatibility, SOUND_MIXER_PCM through the opened dsp device instead of /dev/mixer. Special "bypass" mode is enabled through /dev/mixer which will automatically detect if the adjustment is made through /dev/mixer and forward its request to this private volume controller. Changes to this volume object will not interfere with other channels.
Requirements: - SNDCTL_DSP_[GET|SET][PLAY|REC]_VOL are newer ioctls (OSSv4) which require specific application modifications (preferred). - No modifications required for using bypass mode, so applications like mplayer or xmms should work out of the box.
Kernel hints: - hint.pcm.%d.vpc (0 = disable vpc).
Kernel sysctls: - hw.snd.vpc_mixer_bypass (default: 1). Enable or disable /dev/mixer bypass mode. - hw.snd.vpc_autoreset (default: 1). By default, closing/opening /dev/dsp will reset the volume back to 0 db gain/attenuation. Setting this to 0 will preserve its settings across device closing/opening. - hw.snd.vpc_reset (default: 0). Panic/reset button to reset all volume settings back to 0 db. - hw.snd.vpc_0db (default: 45). 0 db relative to linear mixer value.
2 High quality fixed-point Bandlimited SINC sampling rate converter, based on Julius O'Smith's Digital Audio Resampling - http://ccrma.stanford.edu/~jos/resample/. It includes a filter design script written in awk (the clumsiest joke I've ever written) - 100% 32bit fixed-point, 64bit accumulator. - Possibly among the fastest (if not fastest) of its kind. - Resampling quality is tunable, either runtime or during kernel compilation (FEEDER_RATE_PRESETS). - Quality can be further customized during kernel compilation by defining FEEDER_RATE_PRESETS in /etc/make.conf.
Kernel sysctls: - hw.snd.feeder_rate_quality. 0 - Zero-order Hold (ZOH). Fastest, bad quality. 1 - Linear Interpolation (LINEAR). Slightly slower than ZOH, better quality but still does not eliminate aliasing. 2 - (and above) - Sinc Interpolation(SINC). Best quality. SINC quality always start from 2 and above.
Rough quality comparisons: - http://people.freebsd.org/~ariff/z_comparison/
3 Bit-perfect mode. Bypasses all feeder/dsp effects. Pure sound will be directly fed into the hardware.
4 Parametric (compile time) Software Equalizer (Bass/Treble mixer). Can be customized by defining FEEDER_EQ_PRESETS in /etc/make.conf.
5 Transparent/Adaptive Virtual Channel. Now you don't have to disable vchans in order to make digital format pass through. It also makes vchans more dynamic by choosing a better format/rate among all the concurrent streams, which means that dev.pcm.X.play.vchanformat/rate becomes sort of optional.
6 Exclusive Stream, with special open() mode O_EXCL. This will "mute" other concurrent vchan streams and only allow a single channel with O_EXCL set to keep producing sound.
Other Changes: * most feeder_* stuffs are compilable in userland. Let's not speculate whether we should go all out for it (save that for FreeBSD 16.0-RELEASE). * kobj signature fixups, thanks to Andriy Gapon <avg@freebsd.org> * pull out channel mixing logic out of vchan.c and create its own feeder_mixer for world justice. * various refactoring here and there, for good or bad. * activation of few more OSSv4 ioctls() (see [1] above). * opt_snd.h for possible compile time configuration: (mostly for debugging purposes, don't try these at home) SND_DEBUG SND_DIAGNOSTIC SND_FEEDER_MULTIFORMAT SND_FEEDER_FULL_MULTIFORMAT SND_FEEDER_RATE_HP SND_PCM_64 SND_OLDSTEREO
Manual page updates are on the way.
Tested by: joel, Olivier SMEDTS <olivier at gid0 d org>, too many unsung / unnamed heroes.
|
#
166364 |
|
31-Jan-2007 |
joel |
s/WHETHERIN/WHETHER IN/ & s/THEPOSSIBILITY/THE POSSIBILITY/ in the license text.
Approved by: imp
|
#
162933 |
|
01-Oct-2006 |
netchild |
snd_ak452x is replaced by snd_spicds and snd_envy24ht is new.
|
#
162925 |
|
01-Oct-2006 |
ariff |
Connect snd_hda(4) to build process...
Add support for Intel High Definition Audio Controller.
This driver make a special guarantee that "playback" works on majority hardwares with minimal or without specific vendor quirk.
This driver is a product of collaborative effort made by:
Stephane E. Potvin <sepotvin@videotron.ca> Andrea Bittau <a.bittau@cs.ucl.ac.uk> Wesley Morgan <morganw@chemikals.org> Daniel Eischen <deischen@FreeBSD.org> Maxime Guillaud <bsd-ports@mguillaud.net> Ariff Abdullah <ariff@FreeBSD.org>
....and various people from freebsd-multimedia@FreeBSD.org
Refer to snd_hda(4) for features and issues.
Welcome To HDA.
Sponsored by: Defenxis Sdn. Bhd.
|
#
160386 |
|
15-Jul-2006 |
netchild |
- Connect the snd_emu10kx driver to the build. [1] - Bump __FreeBSD_version, no need to build the port now.
Submitted by: Yuriy Tsibizov <Yuriy.Tsibizov@gfk.ru> [1]
|
#
159693 |
|
17-Jun-2006 |
netchild |
Load the envy24 driver in the meta-module too.
|
#
159682 |
|
17-Jun-2006 |
netchild |
Remove the snd_es1888 module now that it isn't build anymore.
Noticed by: Neil Short <neshort@yahoo.com>
|
#
154709 |
|
23-Jan-2006 |
joel |
Sort list of modules.
Approved by: ariff
|
#
152851 |
|
27-Nov-2005 |
ariff |
Support for ATI IXP 200 / 300 / 400 series audio controllers.
|
#
139749 |
|
05-Jan-2005 |
imp |
Start each of the license/copyright comments with /*-, minor shuffle of lines
|
#
132199 |
|
15-Jul-2004 |
phk |
Do a pass over all modules in the kernel and make them return EOPNOTSUPP for unknown events.
A number of modules return EINVAL in this instance, and I have left those alone for now and instead taught MOD_QUIESCE to accept this as "didn't do anything".
|
#
125195 |
|
29-Jan-2004 |
mr |
Add dependency to snd_via8233
|
#
79047 |
|
01-Jul-2001 |
cg |
intel ich/ich2 driver - this needs some work but is functional enough for the impatient.
Hardware... Provided by: ps Lost by: <censored> Found by: <censored> Not delivered by: Ashley Penney <ashp@unloved.org> Retrieved by: greid, Andrew McKay <andy@openirc.co.uk> Delivered by: Andrew McKay <andy@openirc.co.uk>
PR: kern/25507 Submitted by: Katsurajima Naoto <raven@katsurajima.seya.yokohama.jp>
|
#
75885 |
|
23-Apr-2001 |
orion |
Initial version of Avance Logic ALS4000 pcm driver.
|
#
74429 |
|
18-Mar-2001 |
orion |
pcm driver for S3 Sonicvibes chipset.
Reviewed by: Cameron Grant
|
#
71901 |
|
01-Feb-2001 |
scottl |
Driver for the ESS Maestro3 and Allegro sound chips. Note that due to the amount of GPL'd firmware in the driver, it will only be built as a module.
Approved by: cg
|
#
68140 |
|
31-Oct-2000 |
cg |
switch over to new sb8/sb16 code
|
#
67806 |
|
28-Oct-2000 |
cg |
add commented-out dependancies on the new sb8 and sb16 drivers
|
#
66302 |
|
23-Sep-2000 |
jhb |
Enable the snd_maestro module and have the snd_driver module depend on it.
Approved by: cg
|
#
64466 |
|
09-Aug-2000 |
nsayer |
Missed a step when activating the solo driver.
|
#
64441 |
|
08-Aug-2000 |
cg |
activate via82c686 audio driver
|
#
62484 |
|
03-Jul-2000 |
cg |
do-nothing module that depends on all sound drivers
|