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130 commits

Author SHA1 Message Date
Takashi Iwai
4c6809bf30 Fix poll after XRUN with dmix 
Fix the behavior of poll after XRUN with dmix plugin.
Poll should return immediately with an XRUN stream.
 2005-05-23 08:48:46 +00:00
Takashi Iwai
4e1723f9a5 More strict permission for IPC shm and sem 
Use more strict permission for IPC shm and sem, too.
The permission follows to the value of ipc_perm config option, as
default 0600.
 2005-05-19 14:36:04 +00:00
Takashi Iwai
13c7364997 Revert the shmget permission 
Oops, a part of another patch was merged accidentally.  Reverted.
 2005-05-19 14:20:07 +00:00
Takashi Iwai
5227c7e170 Fix possible noises and optimization with dmix 
dmix transfers data in asynchronously so that it doesn't write on the
last active period.  This will allow the arbitrary buffer size in
future, too.

The hwsync call to slave is removed from commit and hwsync callbacks.
This hack was added to fix the noisy output (typically on xmms/bmp)
but it doesn't happen any more.  Now the hwsync behavior is as same as
on 1.0.8 (i.e. hwsync is called only when slowptr option is set).
 2005-05-19 14:14:04 +00:00
Takashi Iwai
a6d3b9e4e0 Remove poll_ask callback 
Removed poll_ask callbacks.
poll_ask function is merged to poll_descriptors callbacks.
 2005-05-18 10:50:09 +00:00
Takashi Iwai
cf4f4bc9c4 Fix drain of dmix without data 
Fixed the drain of dmix plugin without any data.
It should return immediately.
 2005-05-17 15:36:18 +00:00
Takashi Iwai
51313cb2dd Remove pause and fix timer initialization in prepare 
- Removed broken pause implementations.
- Fixed the timer initialization in prepare callback so that poll
  works again after prepare.
 2005-05-17 09:28:29 +00:00
Takashi Iwai
467d69c5bc Fix CPU hog with combination of rate plugin 
Fix CPU hog with some apps (e.g. artsd) when rate plugin is used
together with dmix (or possible hw).
 2005-04-22 16:36:13 +00:00
Takashi Iwai
0f0fea7450 Fix ATTRIBUTE_UNUSED 
Remove invalid ATTRIBUTE_UNUSED and add it to necessary places.
 2005-04-20 14:30:45 +00:00
Takashi Iwai
72ad0e9ae7 Fix more CPU hang-up bugs in dmix 
- Fix CPU hang-up during snd_pcm_drain()
  A new internal function snd_pcm_wait_nocheck() to force to call poll().

- Clean up, fix status() callback of dmix
 2005-04-11 10:03:28 +00:00
Takashi Iwai
aa89f27de4 More fixes for 100% CPU hang with dmix 
More fixes for 100% CPU hang-up problem with dmix.

- Clear timer queues properly when XRUN happens.
- Don't check XRUN when the stream isn't really running.
- Do hwsync properly for the delayed start state.
 2005-04-05 15:50:15 +00:00
Takashi Iwai
a0a440dcf4 Stop timer at XRUN 
Stop PCM timer at XRUN.
 2005-03-31 15:23:20 +00:00
Takashi Iwai
9207804912 Generic architecture support 
Support dmix on generic architectures without atomic operations but
using a semaphore to avoid concurrent accesses.  This is less effective
than atomic operations but should work on every system.
 2005-03-29 14:13:04 +00:00
Takashi Iwai
6a6a70ffe7 Do hwsync of slave PCM on dmix 
Call hwsync of slave PCM on snd_pcm_hwsync() over dmix.
This reduces ocasional output noises, typically seen in xmms and bmp with
multi-threading on SMP/HT systems.

Disabled slowptr of default dmix definition again.
 2005-03-29 14:10:16 +00:00
Takashi Iwai
5e325ea18b Delayed start for dmix 
Introducing a private state for the delayed start of PCM stream.
This problem occurs when the rate plugin doesn't feed the data
properly before triggering START.  This results in weird problems,
e.g. an inifinte loop of artsd eating 100% CPU time.

To solve this problem, the state is marked as "pending" when no
data appears at the trigger, and the stream is started later at
the mmap commit.
 2005-03-29 14:06:00 +00:00
Takashi Iwai
248d0b285c Fix compilation with gcc-4.0 
Fixed compilation with gcc-4.0
 2005-03-22 18:49:07 +00:00
Takashi Iwai
dab2b58e0e Fix resume of dmix, dsnoop and dshare plugins 
Fix the resume of dmix, dsnoop and dshare plugins.

[This replaces the timer mode with TREAD mode, and may trigger Oops
 with the older kernel...]
 2005-03-15 11:39:51 +00:00
Takashi Iwai
8003e03b50 Small code clean up 
Small code clean up for readability.
 2005-03-09 12:00:37 +00:00
Takashi Iwai
22846c486f Split arch-dependent codes of dmix 
Split arch-dependent codes of dmix to separate files.
 2005-02-08 20:28:29 +00:00
Clemens Ladisch
c92969845d start pcm when draining in prepared state 
For consistency with hw pcms, dmix/dshare pcms are started
when draining in the prepared state with a non-empty buffer.
 2005-02-07 09:13:58 +00:00
Takashi Iwai
680a60a688 Use snd_config_get_bool() 
Cleanup using snd_config_get_bool() in possible places.
 2005-01-21 19:37:00 +00:00
Jaroslav Kysela
836987aa99 improved stream linking and plugin code cleanups 
- added link/unlink/link_fd fast_ops callbacks
- moved code from snd_pcm_link to pcm_hw.c
- moved "empty" routines pointing to slave to pcm_generic.c
- introduced snd_pcm_generic_t
 2005-01-20 15:07:51 +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
Jaroslav Kysela
b7e8f57314 Try to fix period_time/period_size problems for direct plugin slaves 2004-10-29 10:56:13 +00:00
Stas Sergeev
6f515096d9 [ALSA-LIB] dmix: dont forget to return -EINVAL on errors 
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
eafb492512 - added SYNC_PTR ioctl support for pcm_hw plugin 2004-05-22 10:14:32 +00:00
Clemens Ladisch
ef11ba77ed document all PCM plugin parameters 2004-04-26 07:40:12 +00:00
Jaroslav Kysela
7c201b510a - added poll_ask callback to mangle avail_min (rate_plugin as example) 
- added mangling of avail_min to rate_plugin
- added poll_fd_count variable
- FIXME: move poll_revents callback to fast_ops
 2004-03-17 11:48:14 +00:00
Jaroslav Kysela
5337e682f6 rewind returns error code rather than doing wrong operation 2004-02-18 20:15:49 +00:00
Jaroslav Kysela
a6ad2629e3 The format condition was wrong (dmix<->dsnoop) 2004-02-03 14:44:48 +00:00
Jaroslav Kysela
b798d89c0f <atlka@pg.gda.pl> 
- shm memory patch
- optimized a bit sample mixing routines in c and x_86 asm
 2004-01-24 16:34:35 +00:00
Jaroslav Kysela
819a85fb2c Added sync_ptr callback 2004-01-23 13:04:43 +00:00
Jaroslav Kysela
c508b496b4 Fixed poll() behaviour for direct plugins, also added snd_pcm_hwsync() call to start callback 2004-01-21 19:21:11 +00:00
Jaroslav Kysela
eeb5d6f0ac Added slowptr options to direct plugins 2004-01-20 15:29:39 +00:00
Jaroslav Kysela
9105bb7fcd Added SNDRV_PCM_STATE_DISCONNECTED state. 
Changed direct plugins to handle DISCONNECT/SUSPEND states from slave.
 2004-01-19 19:48:27 +00:00
Jaroslav Kysela
0545cf711d Maik Broemme <mbroemme@plusserver.de> 
- added ipc_perm for dmix plugin
Jaroslav Kysela <perex@suse.cz>
- added ipc_perm for dsnoop and dshare plugins
- added ipc_perm to doc/asoundrc.txt
 2003-12-07 09:30:47 +00:00
Takashi Iwai
cdb9bc5139 added more documents and examples about plugins. 2003-10-23 14:42:47 +00:00
Takashi Iwai
243027a824 - support of dmix asm code for x86-64. 2003-09-17 17:09:45 +00:00
Jaroslav Kysela
95418afc67 Direct plugins update: 
- moved more common code to pcm_direct.c
  - added missing initialization of some variables in hw_params
 2003-09-02 10:32:33 +00:00
Takashi Iwai
18927bfe9a fixed dmix crashes by Clemens Ladisch <clemens@ladisch.de>: 
pcm->name can be NULL (when an unnamed pcm node is embedded in another
  pcm)
 2003-08-07 14:20:32 +00:00
Takashi Iwai
7716fd1e3d fixes by Art Haas <ahaas@airmail.net>: 
rewritten with C99 struct initialization style.
 2003-07-25 17:02:00 +00:00
Jaroslav Kysela
e03aaa1888 Added unlink of the communication socket name. 
Added retry when the semaphore is lost (server is going down and removes
the global semaphore). Now the application creates a new direct server
automagically rather than the error return.
 2003-07-15 19:15:10 +00:00
Jaroslav Kysela
6633460801 Clemens Ladisch <clemens@ladisch.de> 
fix some wrong section/file/reference names
 2003-07-01 09:23:38 +00:00
Jaroslav Kysela
573f85dc1d - added shm area manager code 
- fixed parsing of period_size/buffer_size options for dmix, dsnoop and
  dshare plugins
 2003-04-23 12:41:55 +00:00
Jaroslav Kysela
05d57ff3be Added missing sync_ptr() call to pcm_status() function 2003-04-19 13:12:59 +00:00
Jaroslav Kysela
a10140cef6 Added more comments for 32-bit mixing 2003-03-19 16:42:47 +00:00
Jaroslav Kysela
7470a5b9af dshare and dsnoop plugins are working now 2003-03-19 16:35:35 +00:00
Jaroslav Kysela
87538939bd A small cleanup to 32-bit mix routine as Abramo suggested 2003-03-19 13:16:21 +00:00
Jaroslav Kysela
6235dab516 Corrected universal 32-bit mixing routine 2003-03-19 12:27:43 +00:00
Jaroslav Kysela
bc28eccdcd Extracted common code from dmix plugin. 
Initial framework for dsnoop and dshare plugins.
 2003-03-18 20:37:42 +00:00