snd_pcm_ioplug Struct Reference
[External I/O plugin SDK]

Data Fields

unsigned int version
const char * name
unsigned int flags
int poll_fd
unsigned int poll_events
unsigned int mmap_rw
const snd_pcm_ioplug_callback_tcallback
void * private_data
snd_pcm_tpcm
snd_pcm_stream_t stream
snd_pcm_state_t state
volatile snd_pcm_uframes_t appl_ptr
volatile snd_pcm_uframes_t hw_ptr
int nonblock
snd_pcm_access_t access
snd_pcm_format_t format
unsigned int channels
unsigned int rate
snd_pcm_uframes_t period_size
snd_pcm_uframes_t buffer_size

Detailed Description

Handle of ioplug


Field Documentation

access type; filled after hw_params is called

application pointer; read-only

buffer size; filled after hw_params is called

callbacks of this plugin; must be filled before calling snd_pcm_ioplug_create()

number of channels; filled after hw_params is called

unsigned int snd_pcm_ioplug::flags

SND_PCM_IOPLUG_FLAG_XXX

PCM format; filled after hw_params is called

hw pointer; read-only

pseudo mmap mode

const char* snd_pcm_ioplug::name

name of this plugin; must be filled before calling snd_pcm_ioplug_create()

non-block mode; read-only

PCM handle filled by snd_pcm_extplug_create()

period size; filled after hw_params is called

poll events

poll file descriptor

private data, which can be used freely in the driver callbacks

unsigned int snd_pcm_ioplug::rate

rate; filled after hw_params is called

current PCM state; read-only

stream direcion; read-only

protocol version; SND_PCM_IOPLUG_VERSION must be filled here before calling snd_pcm_ioplug_create()


The documentation for this struct was generated from the following file:
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Generated on Mon Dec 21 16:42:56 2009 for ALSA project - the C library reference by  doxygen 1.6.1