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poll: remove threads from alsa-sink

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Remove the thread from alsa sink and use the pollfd event.
Make it possible to pass multiple fds in one pollfd event
Add 3 callbacks to the pollfd event and add support for timeouts
This commit is contained in:
Wim Taymans 2016-07-08 12:18:01 +02:00
parent ac59fa9371
commit 5fa334a89b
10 changed files with 313 additions and 202 deletions
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51
spa/include/spa/event.h
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@ -70,20 +70,53 @@ struct _SpaEvent {
};
/**
* SpaEventPoll:
* @fd: a file descriptor to watch
* @events: events to watch for
* @revents: result events
* @callback: callback called when there was activity on @fd
* @user_data: user data to pass to @callback
* SpaPollFd:
* @fd: a file descriptor
* @events: events to watch
* @revents: events after poll
*/
typedef struct {
int fd;
short events;
short revents;
SpaNotify callback;
void *user_data;
} SpaEventPoll;
} SpaPollFd;
/**
* SpaPollNotifyData:
* @user_data: user data
* @fds: array of file descriptors
* @n_fds: number of elements in @fds
* @now: the current time
* @timeout: the next desired wakeup time relative to @now
*
* Data passed to #SpaPollNotify.
*/
typedef struct {
void *user_data;
SpaPollFd *fds;
unsigned int n_fds;
uint64_t now;
uint64_t timeout;
} SpaPollNotifyData;
typedef int (*SpaPollNotify) (SpaPollNotifyData *data);
/**
* SpaPollItem:
* @fds: array of file descriptors to watch
* @n_fds: number of elements in @fds
* @callback: callback called when there was activity on any of @fds
* @user_data: user data
*/
typedef struct {
SpaPollFd *fds;
unsigned int n_fds;
SpaPollNotify idle_cb;
SpaPollNotify before_cb;
SpaPollNotify after_cb;
void *user_data;
} SpaPollItem;
#ifdef __cplusplus
} /* extern "C" */