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189 commits

Author SHA1 Message Date
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
Clemens Ladisch
04c2de32c1 fix some file paths in comments 
doxygen complains if the file name specified with \file does
not match the real file name, so fix it
 2005-01-17 17:34:31 +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
Takashi Iwai
6fc5e5dd2a Fix warnings with -Wshadow 
Fixed compile warnings when compiled with -Wshadow.
(Renamed the shadow parameteres with _ prefix to avoid confliction.)
 2004-09-21 10:35:57 +00:00
Takashi Iwai
5586e5cbb1 added a new plugin "iec958" to convert IEC958 subframes. 2004-05-04 15:13:23 +00:00
Jaroslav Kysela
a190b87d94 Initial implementation of PCM simple API extension. 2004-03-26 16:08:01 +00:00
Jaroslav Kysela
894bd9157e Initial proposal for simple PCM API extension 2004-03-14 18:37:55 +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
beb837bcf7 Fixed typo - snd_pcm_type_name() 2003-12-22 08:31:22 +00:00
Jaroslav Kysela
d4af763f8a Switch from old to new PCM API retaining binary compatibility 
Changed version to 1.0.0pre1
 2003-11-05 10:38:37 +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
Jaroslav Kysela
157107491c Added snd_pcm_type_name() 
Fixed rate conversion plugin (SIGSEGV) - rounding problem
 2003-03-08 16:35:18 +00:00
Jaroslav Kysela
1ac62945f8 Added htstamp functions 2003-02-28 20:29:23 +00:00
Jaroslav Kysela
cf9e518d51 Timestamp update (struct timeval -> struct timespec). 2003-02-28 17:23:28 +00:00
Jaroslav Kysela
7b09000813 Removed snd_pcm_hwdiff() function 2003-02-22 17:53:01 +00:00
Jaroslav Kysela
2dab1dfbc3 Removed snd_pcm_hwptr(). 
Added snd_pcm_hwdiff() and snd_pcm_forward().
Returned the behaviour for snd_pcm_mmap_begin().
 2003-02-22 17:19:02 +00:00
Jaroslav Kysela
fbd99fdec0 Added snd_pcm_hwptr() and enhanced snd_pcm_mmap_begin() for no xrun mode. 2003-02-22 10:19:53 +00:00
Jaroslav Kysela
62546a3a32 More pcm_jack plugin changes 2003-02-12 21:57:49 +00:00
Jaroslav Kysela
7c5e5f5728 Added snd_pcm_sw_params_get_boundary() function. 
Implemented refine function in dmix.
 2003-02-05 21:26:14 +00:00
Jaroslav Kysela
fd52ee0085 added DMIX plugin 2003-02-04 14:55:19 +00:00
Jaroslav Kysela
3bccde0087 Removed clear() functions 2002-10-23 17:49:34 +00:00
Jaroslav Kysela
6979732fa5 Changed sw_params to follow hw_params (unify functions) 2002-10-19 19:09:46 +00:00
Jaroslav Kysela
8205a95376 Replaced snd_pcm_avail() with snd_pcm_hwsync() 2002-10-12 11:49:53 +00:00
Jaroslav Kysela
dac0626b9f Added snd_pcm_hw_params_current() function and clear() functions for structures 2002-10-12 10:38:43 +00:00
Jaroslav Kysela
453dd9f698 Added snd_pcm_avail() function 2002-10-11 18:40:19 +00:00
Jaroslav Kysela
2a055201d9 New hw_params API uses weak alias in function declaration 2002-09-21 20:05:48 +00:00
Jaroslav Kysela
2f85e63e1a Fixed loop for inline functions defining new hw_params PCM API. 
Unfortunately, resulting binary will contain references to all new
functions.
 2002-09-21 17:55:45 +00:00
Jaroslav Kysela
7f3942d827 Reverted back the PCM API. 
New snd_pcm_hw_params_* functions are available only explicitly when
ALSA_PCM_NEW_HW_PARAMS_API is defined.
Updated documentation and test code to new API.
 2002-09-19 16:12:13 +00:00
Jaroslav Kysela
b9343e0834 - unified snd_pcm_hw_params_* functions 
- added backward compatibility for older non-compatible functions
- added --with-compat-rc3 to configure script to build library
  backwards compatible with 0.9.0rc3
- added symbol versioning like libc.so.6
  - ALSA_0.9      - alsa base
  - ALSA_0.9.0rc4 - first set of new functions (snd_pcm_hw_params_*)
 2002-09-17 12:33:05 +00:00
Jaroslav Kysela
677b0f60d6 Added snd_pcm_hw_params_get_min_align; changed get_format, get_subformat and get_access function to return not mixed error and return value 2002-09-09 19:47:50 +00:00
Jaroslav Kysela
16b3bf447c Enhanced bitmasks in PCM - added support for more formats by Takashi and me 2002-06-26 02:04:11 +00:00
Jaroslav Kysela
c941c548f8 Moved ring buffer pointers and added a mechanism to transfer them via shm 2002-04-23 15:51:29 +00:00
Jaroslav Kysela
853304bbf4 Corrections by Kevin Conder <kconder@interaccess.com> 2002-03-12 20:14:33 +00:00
Takashi Iwai
6ce9436b13 removed comma from last element of enums. 2002-02-05 11:36:20 +00:00
Jaroslav Kysela
d57853a90a Added more informative comments to open mode flags 2002-01-28 18:11:45 +00:00
Jaroslav Kysela
3e3df2d32b Updated GNU GPL license (address). 
Changed GNU LGPL licence from 2.0 to 2.1.
 2001-12-30 09:22:54 +00:00
Jaroslav Kysela
cd29f8b860 changed result type from int to snd_pcm_sframes_t for snd_pcm_mmap_commit; removed snd_pcm_mmap_commit_partial 2001-12-11 15:27:26 +00:00
Jaroslav Kysela
ef7f65c5eb Added snd_pcm_access_mask_empty() 2001-12-11 15:05:45 +00:00
Jaroslav Kysela
5c98225fc0 Removed snd_pcm_mmap_begin_avail and changed snd_pcm_mmap_begin behaviour back. 2001-12-10 17:16:13 +00:00
Jaroslav Kysela
bbcf77116d Added snd_pcm_mmap_commit_partial(). 2001-12-10 10:52:04 +00:00
Jaroslav Kysela
b7b11c3558 - added snd_pcm_mmap_begin_avail function; it is optimized for use after 
snd_pcm_avail_update() call
- fixed broken hw_ptr management inside snd_pcm_plugin code
 2001-12-09 18:41:23 +00:00
Jaroslav Kysela
ddb7209e9a Added snd_*_poll_descriptors_revents functions. 2001-11-30 17:36:45 +00:00
Jaroslav Kysela
bb749766d4 Added lfloat plugin code (not finished) 2001-11-26 16:08:49 +00:00
Jaroslav Kysela
b3c53425d6 Added Linear <-> float format conversion PCM type 2001-11-26 15:19:44 +00:00
Jaroslav Kysela
0e746d674b Specified the range for float types and added empty check function for format and subformat mask 2001-11-26 15:16:01 +00:00
Jaroslav Kysela
26c3afa171 Added LADSPA plugin (only framework, no implementation yet) 2001-11-25 09:55:53 +00:00
Jaroslav Kysela
c33c5760ab Added snd_*_open_lconf functions. 
Some minor changes in config interface documentation.
 2001-11-24 17:47:01 +00:00
Jaroslav Kysela
c39882f602 Configuration: 
- changed snd_config_get_id function to follow semantic of other get functions
  - added snd_config_test_id
  - added runtime pointer type (not persistent)
    - added snd_config_make_pointer, snd_config_set_pointer, snd_config_get_pointer
  - added type/contents checking for callback functions
    - changed 'void *private_data' to 'snd_config_t *private_data'
  - renamed card_strtype functions to card_driver
Control:
  - fixed passing parameters to snd_ctl_async
Async handlers:
  - added public snd_async_handler_get_signo function
Documentation:
  - moved all documentation to source files
 2001-11-19 08:14:21 +00:00
Jaroslav Kysela
87b5b249a5 pcm.h - major documentation updates and reordering 
Cleanup for __cplusplus defines.
 2001-11-14 11:40:46 +00:00
Jaroslav Kysela
09d82fa2ba Fixed PCM STATE range 2001-10-25 13:36:00 +00:00