Takashi Iwai
ff9c030e65
Use snd_config_get_bool()
...
Clean up the code, using snd_config_get_bool().
2005-01-13 15:46:34 +00:00
Takashi Iwai
5211c26927
Fix compile warning
...
Fixed compile warning due to signed/unsigned comparison.
2005-01-12 11:19:47 +00:00
Takashi Iwai
c83e9d7451
Fix handling of DISCONNECT state
...
Fixed the handling of DISCONNECT state in dmix (not to set bogus error
values to state).
2005-01-11 17:42:49 +00:00
Takashi Iwai
c67584ec65
Clear sw_params struct at initialization
...
Do zero-clear the sw_params struct in hw_params, just to be sure.
This makes valgrind happy.
2005-01-11 15:11:09 +00:00
Takashi Iwai
a920ca39db
Performance optimization
...
The performance of rate conversion is optimized.
- with S16 format, no format conversion is done
- linear polation of expansion uses 16bit resolution
2005-01-04 13:57:51 +00:00
Takashi Iwai
c7feb066b1
Support stereo volume control
...
softvol supports stereo volume controls.
Fixed the dB calculation, too.
2005-01-04 11:37:29 +00:00
Takashi Iwai
7e92411760
Fix missing declaration
...
Fixed the missing declration of softvol plugin.
2005-01-03 18:19:23 +00:00
Takashi Iwai
82e408d08b
Set max volume as default for softvol
...
Set max volume as default for softvol.
2005-01-03 17:12:51 +00:00
Takashi Iwai
199d207423
Change the behavior with hardware volume controls
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When a hardware volume control is given, softvol plugin simply
passes the slave PCM without any additional changes.
2005-01-03 14:37:39 +00:00
Takashi Iwai
0732cce6f0
Add accessor to user control elements
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Added accessor functions to user control elements, snd_ctl_elem_add_*(),
and_ctl_elem_remove() and snd_ctl_elem_info_is_user().
2005-01-03 11:52:39 +00:00
Takashi Iwai
30f35c1f7a
Add softvol PCM plugin
...
The softvol PCM plugin is added. It applies the software volume attenuation,
which may be useful for codecs without volume controls.
Currently, the control is only mono. The attenuation is applied to all
channels equally. The control is probed and automatically created
when not exists yet.
2004-12-27 14:40:19 +00:00
Clemens Ladisch
5c9ee5ef03
fix changed error message handling
...
In the last error message handling change, some error conditions
didn't get properly inverted.
2004-12-23 08:15:46 +00:00
Takashi Iwai
2b54677fdb
Change error message handling
...
Change the handling of non-fatal errors. Now the non-fatal error
messages are not shown in stderr and no assert() as default. The
behavior can be changed with LIBASOUND_DEBUG environment variable.
2004-12-21 14:11:00 +00:00
Takashi Iwai
73aa2549d9
Add preamble value configuration for iec958 plugin
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The preamble values can be defined in iec958 plugin configuration.
As default, Z/Y/X=8/4/2 is used. CMI8338 has different values,
so override in its configuration.
2004-12-15 15:17:36 +00:00
Kirill Smelkov
0256e1e8c9
Fixed few typos in documentation.
...
Signed-off-by: Kirill Smelkov <kirr@mns.spb.ru>
2004-12-08 19:22:42 +00:00
Andreas Fenkart
0ed778404d
Fixes variable shadow problem in capture direction
...
My gnomemeeting hung when accessing the microphone.
The problem was that the rate variable was not initialized when jumping to
the __partial label.
Signed-off-by: Andreas Fenkart <afenkart@gmx.ch>
2004-11-22 06:40:10 +00:00
Jaroslav Kysela
457b8777ab
fix for capture for case when status/control structures are not mmaped
2004-11-16 16:03:01 +00:00
Jaroslav Kysela
6987a8555c
appl_ptr sync fix when status/control structures are not mmaped
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The prepare and reset ioctls can modify appl_ptr, thus the user space
must take modified appl_ptr from driver.
2004-11-16 15:05:49 +00:00
Jaroslav Kysela
2d7ca56e2a
Return correct error in snd_pcm_wait() after snd_pcm_poll_descriptors() call
2004-11-12 20:27:31 +00:00
Clemens Ladisch
e156d54c84
remove duplicate snd_pcm_null_fwd() function
2004-11-08 08:49:19 +00:00
Jaroslav Kysela
b7e8f57314
Try to fix period_time/period_size problems for direct plugin slaves
2004-10-29 10:56:13 +00:00
Jaroslav Kysela
090fa69b51
Added check_std_error to avoid extra verbosity
2004-09-28 10:54:05 +00:00
Takashi Iwai
83a533d1a7
[alsa-lib] Avoid zero division
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Check the invalid parameters in snd_pcm_sw_params() beforehand to avoid
zero division.
2004-09-17 17:36:18 +00:00
Markus Grabner
3a8bfd43d7
Fix the downsampling noise problem
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Description: The patch replaces the nearest neighbor downsampling method
in the sample rate conversion plugin by linear interpolation of the closest
two samples, thus significantly reducing the resampling noise.
Signed-off-by: Markus Grabner <grabner@icg.tu-graz.ac.at>
2004-09-16 10:02:12 +00:00
Takashi Iwai
8ac16f151c
[ALSA-LIB] suppress PAUSE and RESUME for direct plugins
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Direct plugins don't work well with PAUSE and RESUME. The info
bits are cleared for these plugins to suppress these features.
2004-09-15 18:45:51 +00:00
Stas Sergeev
6f515096d9
[ALSA-LIB] dmix: dont forget to return -EINVAL on errors
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snd_pcm_dmix_open() returns success if the open fails attempting
to open not the HW plugin (dmix seems to be limited to use only
the HW plugin right now). This leads to memory corruptions and
eventually a SIGSEGV. The attached patch fixes the omission.
Signed-off-by: Stas Sergeev <stsp@aknet.ru>
2004-09-15 18:44:24 +00:00
Jaroslav Kysela
e35885fa65
Small optimization
2004-08-27 11:14:21 +00:00
Jaroslav Kysela
06976cbcce
Fixed problem with the route plugin and ttable (an extra route plugin was
...
inserted accidently).
2004-08-11 15:09:05 +00:00
James Courtier-Dutton
6170a88309
Signed-off-by: James Courtier-Dutton <James@superbug.demon.co.uk>
...
This patch fixes a number of different bugs in pcm_rate.c.
1) Resampling now works for rate 192000 -> 8000.
2) zero samples are not accidentally inserted into the stream any more.
3) Corrects period size calculations.
4) Prevents avail_min and xfer_align being less than 1.
2004-08-09 06:31:41 +00:00
Jaroslav Kysela
509e30494f
compilation fix
2004-05-24 18:44:04 +00:00
Jaroslav Kysela
0c468bf109
Fixed wrong jump for 32-bit mixing
2004-05-24 18:40:11 +00:00
Takashi Iwai
c11a1fc9be
fixed documents to process properly via doxygen.
2004-05-24 14:57:47 +00:00
Jaroslav Kysela
eafb492512
- added SYNC_PTR ioctl support for pcm_hw plugin
2004-05-22 10:14:32 +00:00
Takashi Iwai
5a2c2e0295
fixed unneeded cast.
2004-05-21 15:10:58 +00:00
Takashi Iwai
01f217d581
fixed debug messages by Erik Inge Bolso.
2004-05-04 15:54:01 +00:00
Takashi Iwai
5586e5cbb1
added a new plugin "iec958" to convert IEC958 subframes.
2004-05-04 15:13:23 +00:00
Takashi Iwai
4032563aad
fixed the bit width of IEC958_SUBFRAME_* formats from 24 to 32.
2004-05-04 15:10:38 +00:00
Clemens Ladisch
fe1618627f
initialize hw_params->info
2004-05-03 14:38:46 +00:00
Clemens Ladisch
4861d237e6
define SND_PCM_INFO_RESUME
2004-05-03 14:37:53 +00:00
Clemens Ladisch
ef11ba77ed
document all PCM plugin parameters
2004-04-26 07:40:12 +00:00
Jaroslav Kysela
2cb16f857d
Prefer SND_ macros over SNDRV_ ones
2004-04-20 13:52:32 +00:00
Jaroslav Kysela
2bad31bbf4
Fixed bugs detected by Intel compiler
2004-04-20 13:42:48 +00:00
Jaroslav Kysela
ba4ddd169f
assert -> return error code in hw_params
2004-04-19 13:24:19 +00:00
Takashi Iwai
965222c3d9
fixed compile warnings.
2004-04-15 12:52:49 +00:00
Takashi Iwai
494f3e66e4
fixed the handling of EINTR in read/write.
...
EINTR can be returned during ACPI suspend/resume.
2004-04-15 12:22:26 +00:00
Jaroslav Kysela
64a39728a2
Added early event extension to the timer API - and a fix for the direct plugins
2004-04-06 17:29:25 +00:00
Jaroslav Kysela
b0ad5bf718
Next documentation update for file descriptor routines
2004-04-05 17:59:34 +00:00
Jaroslav Kysela
033fb96b00
- fixed problem with start_threshold
...
- fixed rounding problem for period_size (mmap_commit assert invoked)
2004-04-03 08:27:58 +00:00
Jaroslav Kysela
72e2f8046e
Added 24-bit copy
2004-03-31 14:16:31 +00:00
Jaroslav Kysela
a190b87d94
Initial implementation of PCM simple API extension.
2004-03-26 16:08:01 +00:00
