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27 commits

Author SHA1 Message Date
Takashi Iwai
662f79d4ec Implement get_chmap/set_chmap for PCM extplug/ioplug plugins 
Added the new ops for both external plugins, so the protocol numbers
are incremented.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
 2012-09-11 11:34:50 +02:00
Takashi Iwai
59de61e5b5 PCM: Allow to run older version of extplug plugin 
Also show the incompatible plugin version number in error messages.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
 2012-08-15 17:05:37 +02:00
Takashi Iwai
cbf5675eef pcm/ioplug: fix error code in start callback 
When snd_pcm_start() is called in the invalid state, it should return
-EBADFD.  But ioplug plugin returns -EAGAIN.  Let's fix it.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
 2009-08-21 01:34:29 +02:00
Clemens Ladisch
5332d74a67 fix doc errors 
Fix various errors in the documentation that make doxygen complain.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
 2009-08-04 09:17:20 +02:00
Diego E. 'Flameeyes' Pettenò
8b14625cc3 Make all the PCM plugins ops structure constant. 
This ensures they are emitted in .data.rel.ro rather than .data.rel,
which should make a nice difference when using prelink.

Signed-off-by: Diego E. 'Flameeyes' Pettenò <flameeyes@gmail.com>
 2008-11-21 20:38:49 +01:00
Diego E. 'Flameeyes' Pettenò
8ed98db259 Make some static tables and strings constants. 
By doing this we move them from the .data section to .rodata setion,
or from .data.rel to .data.rel.ro.

The .rodata section is mapped directly from the on-disk file, which is
always a save, while .data.rel.ro is mapped directly when using
prelink, which is a save in a lot of cases.

Signed-off-by: Diego E. 'Flameeyes' Pettenò <flameeyes@gmail.com>
 2008-11-21 13:04:41 +01:00
Jaroslav Kysela
c88672d86f implemented snd_pcm_rewindable() and snd_pcm_forwardable(), removed can_rewind and can_forward 2008-04-21 12:46:50 +02:00
Takashi Iwai
6e0b0e7c6a Fix the state in snd_pcm_ioplug_pause() 
The states[] in snd_pcm_ioplug_pause() has wrong values.  They should be
swapped.  ALSA bug#3796:
	https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3796
 2008-02-25 15:11:46 +01:00
Takashi Iwai
91fc64cefb Implement missing htimestamp callbacks 
Implemented the missing htimestamp callbacks for ioplug, rate and null
plugins.
 2008-01-15 14:29:34 +01:00
Jaroslav Kysela
2c1318803f Impemented snd_pcm_htimestamp() function. 2008-01-09 13:50:45 +01:00
Jaroslav Kysela
309a274454 Add support for monotonic timestamps 2008-01-09 11:13:34 +01:00
Takashi Iwai
ce64f433a6 Add snd_pcm_ioplug_set_state() function 
Added an exported function snd_pcm_ioplug_set_state() to change
the PCM state of ioplug from the plugin side (e.g. from another
thread).
 2007-12-14 15:19:03 +01:00
Takashi Iwai
683c8bc4a2 Clean up using gettimestamp() 
Introduce a new local function gettimestamp() to get the current timestamp.
 2007-11-21 12:19:43 +01:00
Takashi Iwai
07137c0267 ioplug - Fix the refinement of period_* after periods 
When changing only PERIODS after BUFFER_*, ioplug doesn't update
the corresponding PERIOD_* parameters properly.  This should fix
ALSA bug#2601.
 2007-11-05 12:46:46 +01:00
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
Pierre Ossman
3fd9369990 Allow ioplugins to override snd_pcm_delay() 
Some io plug-ins might want to adjust the reported delay value and not
strictly follow the current buffer usage (that's why we have two calls
after all).

Allow them to specify a delay() callback and use the previous behaviour
if they don't.

Signed-off-by: Pierre Ossman <ossman@cendio.se>
 2006-05-26 17:08:18 +02:00
Takashi Iwai
ffebf01d61 Correction for fixing alsa-lib static build 
Added the missing _snd_module_pcm_* definitions for static alsa-lib.

From: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
 2006-05-12 14:43:26 +02:00
Takashi Iwai
7a89e3bbca Fix compile warnings with gcc-4 
Fixed compile warnings with gcc-4 about pointer signedness.
 2005-06-28 10:24:44 +00:00
Takashi Iwai
7651690858 Fix documentation of external PCM plugin SDK 
Fix documentation of external PCM plugin SDK.
 2005-05-24 09:42:01 +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
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
e61d385993 Add protocl version check 
- Added protocl version check.  The caller of snd_pcm_{io|ext}plug_create()
  must fill version field with SND_PCM_{IO|EXT}PLUG_VERSION beforehand.

- Added poll_descriptors and poll_descriptors_count callbacks for ioplug.
 2005-05-18 10:47:52 +00:00
Takashi Iwai
e76bbd74d7 Set up pcm->info properly 
Set up pcm->info properly for ioplug according to the avaialbe callbacks.
 2005-05-17 09:27:17 +00:00
Takashi Iwai
227441b2c8 More doxygen comments 
Added more doxygen comments in pcm_extplug and pcm_ioplug codes.
 2005-03-09 11:54:58 +00:00
Takashi Iwai
5eb794fe0b Add filter-type external plugin SDK 
Added the SDK for filter-type PCM plugins.
Share some codes with ioplug.
 2005-02-14 13:33:08 +00:00
Takashi Iwai
237d46cfb6 Fix compile warnings 
Fixed compile warnings with unused variables.
 2005-02-09 17:28:08 +00:00
Takashi Iwai
94c4cdcd30 Add external PCM plugin SDK (draft version) 
Added the external PCM plugin SDK (draft version).
This can be used to create external PCM plugins.
Example codes are found in alsa-plugins directory.
 2005-02-08 20:57:51 +00:00