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49 commits

Author SHA1 Message Date
Jaroslav Kysela
d25e281230 Changed Jaroslav Kysela's e-mail from perex@suse.cz to perex@perex.cz 2007-10-15 10:24:55 +02:00
Takashi Iwai
8048321c76 More better fix for linked start/stop 
Instead of link_fd, more generic callback link_slaves is introduced.
This is called for linking the slave streams as the source to the
given master stream.
 2007-03-13 02:52:33 +01:00
Jaroslav Kysela
10cca7c03b pcm direct plugins - fix memory leak (sconf must be deleted) 2006-10-12 14:42:45 +02:00
Takashi Iwai
eafb7ae5d8 Use O_APPEND mode with dmix & co plugins 
Use O_APPEND mode (only if available) with dmix, dsnoop and dshare
plugins.  Using this mode, the plugin requires no resource server
any more.
 2006-04-28 15:55:32 +02:00
Takashi Iwai
6ff727bb7f Add check of binding ranges in direct plugins 
Add checks of slave channel numbers in bindings of dmix/dsnoop/dshare
plugins to avoid segfault.
Also, fix a possible memory leaks in the error path.
 2006-04-26 18:30:44 +02:00
Takashi Iwai
4632e0f637 Fix segfault with dshare plugin 
Fixed the segfault with dshare plugin at the second open.
 2006-04-25 18:53:17 +02:00
Takashi Iwai
1128efc7d4 Fix buffer size handling of direct plugins 
Introduce "max_periods" option to specify the max number of periods
per buffer to each plugin.

- When max_periods = -1, the fixed buffer size as the slave size is
  used (old behavior).
- When max_periods = 0 (or 1), the number of periods is variable
  between 2 and the slave buffer size.
- When max_periods greater than 2 is given, it specifies the max
  periods of that pcm explicitly.

When no option is given in the PCM defintion, the value
"defaults.pcm.dmix_max_periods" is referred as default.
The default value is 0, as defined in alsa.conf.
You can override this in ~/.asoundrc or /etc/asound.conf as you like.
 2006-04-06 18:49:11 +02:00
Takashi Iwai
7e6c920836 dmix - Allow more flexible buffer sizes 
With the patch, dmix allows apps to use more flexible buffer sizes.
The max buffer size is unlimited, and the minimal buffer size is
(period size * 2).  The buffer size is aligned to period size.

The period size is still bound to the period size of slave PCM.

To back to the old behavior (the fixed buffer size), you can set

   defaults.pcm.dmix_variable_buffer false

in your configuration.
 2006-03-21 10:27:35 +00:00
Clemens Ladisch
8f61812f1c return ENODEV for disconnected devices 
Return -ENODEV instead of -ENOTTY for disconnected devices.
 2006-03-03 14:08:58 +00:00
Clemens Ladisch
4433248bf3 remove superfluous free() checks 
free() correctly handles NULL pointers, so we can omit explicit checks
for that condition.
 2006-02-27 09:58:32 +00:00
Takashi Iwai
eccc92a34d Fix infinite parse of recursive definitions 
Fixed the infinite parse (and eventually segfault) of recursive definitions.
Also fixed the parse of a string slave PCM of direct plugins.
 2006-01-30 14:41:51 +00:00
Takashi Iwai
7eff603576 Support multi-card/device for direct plugins 
- Support multi-card/device for dmix/dsnoop/dshare plugins
  The unique ipc key is calculated based on card/device/sub index

- Clean up and share the code among all d* plugins

- Refer the defaults.pcm.* configuration
  The base ipc_key number, ipc_gid and ipc_perm are referred.
 2006-01-16 13:15:32 +00:00
Jaroslav Kysela
bdfbbed5ca pcm dump() routines update: use spaces to indent texts 2005-12-11 08:24:13 +00:00
Jaroslav Kysela
8b908f233d direct plugins - fixed ipc_gid initialization when gid specified as number 2005-12-04 09:19:11 +00:00
Takashi Iwai
d4bbf241ba Abort from snd_pcm_dshare_drain in XRUN state 
Fixed the hang-up in snd_pcm_dshare_drain() when the state is XRUN.
 2005-11-21 10:51:43 +00:00
Jaroslav Kysela
ba21d25808 direct pcm plugins - fixed dump output name for dshare and dsnoop 2005-11-01 13:35:52 +00:00
Takashi Iwai
ea77e08cc6 Misc fixes 
Fixes of spots found via valgrind

- non-freed chunks after snd_config_get_ascii()
- zero-fill records (to make valgrind happy)
- compile warning fixes
 2005-08-17 17:27:16 +00:00
Jaroslav Kysela
bac9a7de83 direct plugins (dmix) - suspend/resume fixes 
- this patch adds support for suspend & result for dmix and other
  direct plugins
- the timer detection / initialization (TREAD support) was redesigned and
  the check for proper driver version was moved to the timer_hw.c
 2005-08-16 12:19:15 +00:00
Takashi Iwai
e80f80866f Fix direct plugins running on 32bit emulation with 64bit arch 
Fix the problems of dmix/dsnoop/dshare plugins running on 32bit mode with
64bit biarch.
 2005-08-12 15:53:02 +00:00
Jaroslav Kysela
4b7e3cff81 added ipc_gid for direct plugins 2005-05-30 10:13:54 +00:00
Takashi Iwai
087184b0f9 Fix doxygen documents 
Fix the warnings of doxygen parsing.
Add some missing documentation.
 2005-05-24 14:14:28 +00:00
Takashi Iwai
dd37bb20ee Move poll_* callbacks to fast_ops 
Moved poll_* callbacks to fast_ops.
These callbacks may be called frequently indeed.
 2005-05-23 09:03:16 +00:00
Takashi Iwai
a3ae02d884 Fix semaphore deadlocks 
- Fixed unbalanced semaphores (which may cause deadlock)
- Do semaphore-up before blocking calls for communication with the server
- Don't discard semaphores on the client side
- Open slave PCMs always in non-blocking mode to avoid blocking by semaphore
  with the secondary open
 2005-05-23 08:56:48 +00:00
Takashi Iwai
ddd9c29a0d Fix dshare plugin codes 
Modify dshare plugin codes to follow the recent change of dmix:
proper XRUN and poll handling, async data transfer.
 2005-05-23 08:51:59 +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
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
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
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
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
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
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
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
7470a5b9af dshare and dsnoop plugins are working now 2003-03-19 16:35:35 +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