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Add protocl version check

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- 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.
This commit is contained in:
Takashi Iwai 2005-05-18 10:47:52 +00:00
parent 97010dbfdb
commit e61d385993
4 changed files with 80 additions and 1 deletions
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15
include/pcm_extplug.h
View file

@ -32,8 +32,23 @@ enum {
typedef struct snd_pcm_extplug snd_pcm_extplug_t;
typedef struct snd_pcm_extplug_callback snd_pcm_extplug_callback_t;
/**
* Protocol version
*/
#define SND_PCM_EXTPLUG_VERSION_MAJOR 1
#define SND_PCM_EXTPLUG_VERSION_MINOR 0
#define SND_PCM_EXTPLUG_VERSION_TINY 0
#define SND_PCM_EXTPLUG_VERSION ((SND_PCM_EXTPLUG_VERSION_MAJOR<<16) |\
(SND_PCM_EXTPLUG_VERSION_MINOR<<8) |\
(SND_PCM_EXTPLUG_VERSION_TINY))
/** handle of extplug */
struct snd_pcm_extplug {
/**
* protocol version; SND_PCM_EXTPLUG_VERSION must be filled here
* before calling #snd_pcm_extplug_create()
*/
unsigned int version;
/**
* name of this plugin; must be filled before calling #snd_pcm_extplug_create()
*/