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add new API call pa_cvolume_init()

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This commit is contained in:
Lennart Poettering 2008-10-03 17:16:55 +02:00
parent db975c7127
commit be77bcd9ad
2 changed files with 19 additions and 1 deletions
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13
src/pulse/volume.c
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@ -47,6 +47,19 @@ int pa_cvolume_equal(const pa_cvolume *a, const pa_cvolume *b) {
return 1;
}
pa_cvolume* pa_cvolume_init(pa_cvolume *a) {
unsigned c;
pa_assert(a);
a->channels = 0;
for (c = 0; c < PA_CHANNELS_MAX; c++)
a->values[c] = (pa_volume_t) -1;
return a;
}
pa_cvolume* pa_cvolume_set(pa_cvolume *a, unsigned channels, pa_volume_t v) {
int i;

5
src/pulse/volume.h
View file

@ -116,6 +116,11 @@ typedef struct pa_cvolume {
/** Return non-zero when *a == *b */
int pa_cvolume_equal(const pa_cvolume *a, const pa_cvolume *b) PA_GCC_PURE;
/** Initialize the specified volume and return a pointer to
* it. The sample spec will have a defined state but
* pa_cvolume_valid() will fail for it. \since 0.9.13 */
pa_cvolume* pa_cvolume_init(pa_cvolume *a);
/** Set the volume of all channels to PA_VOLUME_NORM */
#define pa_cvolume_reset(a, n) pa_cvolume_set((a), (n), PA_VOLUME_NORM)