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sink, source: Assign to s->muted from only one place

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Forcing all mute changes to go through set_mute() makes it easier to
check where the muted field is changed, and it also allows us to have
only one place where notifications for changed mute are sent.
This commit is contained in:
Tanu Kaskinen 2014-04-15 13:56:10 +03:00
parent dbd2a8f851
commit e4a7625ba8
7 changed files with 87 additions and 64 deletions
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24
src/pulsecore/source.h
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@ -58,6 +58,8 @@ static inline bool PA_SOURCE_IS_LINKED(pa_source_state_t x) {
/* A generic definition for void callback functions */
typedef void(*pa_source_cb_t)(pa_source *s);
typedef int (*pa_source_get_mute_cb_t)(pa_source *s, bool *mute);
struct pa_source {
pa_msgobject parent;
@ -158,14 +160,24 @@ struct pa_source {
* set this callback. */
pa_source_cb_t write_volume; /* may be NULL */
/* Called when the mute setting is queried. Called from main loop
* context. If this is NULL a PA_SOURCE_MESSAGE_GET_MUTE message
* will be sent to the IO thread instead. If refresh_mute is
* false neither this function is called nor a message is sent.
/* If the source mute can change "spontaneously" (i.e. initiated by the
* source implementation, not by someone else calling
* pa_source_set_mute()), then the source implementation can notify about
* changed mute either by calling pa_source_mute_changed() or by calling
* pa_source_get_mute() with force_refresh=true. If the implementation
* chooses the latter approach, it should implement the get_mute callback.
* Otherwise get_mute can be NULL.
*
* This is called when pa_source_get_mute() is called with
* force_refresh=true. This is called from the IO thread if the
* PA_SINK_DEFERRED_VOLUME flag is set, otherwise this is called from the
* main thread. On success, the implementation is expected to return 0 and
* set the mute parameter that is passed as a reference. On failure, the
* implementation is expected to return -1.
*
* You must use the function pa_source_set_get_mute_callback() to
* set this callback. */
pa_source_cb_t get_mute; /* may be NULL */
pa_source_get_mute_cb_t get_mute;
/* Called when the mute setting shall be changed. Called from main
* loop context. If this is NULL a PA_SOURCE_MESSAGE_SET_MUTE
@ -316,7 +328,7 @@ pa_source* pa_source_new(
void pa_source_set_get_volume_callback(pa_source *s, pa_source_cb_t cb);
void pa_source_set_set_volume_callback(pa_source *s, pa_source_cb_t cb);
void pa_source_set_write_volume_callback(pa_source *s, pa_source_cb_t cb);
void pa_source_set_get_mute_callback(pa_source *s, pa_source_cb_t cb);
void pa_source_set_get_mute_callback(pa_source *s, pa_source_get_mute_cb_t cb);
void pa_source_set_set_mute_callback(pa_source *s, pa_source_cb_t cb);
void pa_source_enable_decibel_volume(pa_source *s, bool enable);