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pulse: Add pa_operation_set_state_callback() API

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[The original commit message didn't have any explanation why this
change is made, so I'll add that information here myself.
--Tanu Kaskinen]

This change is from the developers of a Haskell binding[1]. According
to them, this change isn't strictly necessary, but their code gets
significantly cleaner if they can register an operation callback that
is called when the operation is cancelled due to the context getting
disconnected.

[1] https://github.com/favonia/pulse
This commit is contained in:
Paul Meng 2013-01-07 21:41:26 +08:00 • committed by Tanu Kaskinen
parent b1e47df72c
commit a255c29344
4 changed files with 30 additions and 0 deletions
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7
src/pulse/operation.h
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@ -34,6 +34,9 @@ PA_C_DECL_BEGIN
/** An asynchronous operation object */
typedef struct pa_operation pa_operation;
/** A callback for operation state changes */
typedef void (*pa_operation_notify_cb_t) (pa_operation *o, void *userdata);
/** Increase the reference count by one */
pa_operation *pa_operation_ref(pa_operation *o);
@ -50,6 +53,10 @@ void pa_operation_cancel(pa_operation *o);
/** Return the current status of the operation */
pa_operation_state_t pa_operation_get_state(pa_operation *o);
/** Set the callback function that is called when the operation
* is canceled due to disconnection. \since 4.0 */
void pa_operation_set_state_callback(pa_operation *o, pa_operation_notify_cb_t cb, void *userdata);
PA_C_DECL_END
#endif