From 64b0f38b67ed221ac11d017bd27aa62c6b1a8c2b Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Wed, 17 Jun 2009 03:04:21 +0200 Subject: volume: implement functions for multiplicating a cvolume with a scalar --- src/pulse/volume.c | 36 ++++++++++++++++++++++++++++++++++-- 1 file changed, 34 insertions(+), 2 deletions(-) (limited to 'src/pulse/volume.c') diff --git a/src/pulse/volume.c b/src/pulse/volume.c index 64688e0b..76ef7aa5 100644 --- a/src/pulse/volume.c +++ b/src/pulse/volume.c @@ -344,7 +344,7 @@ pa_cvolume *pa_sw_cvolume_multiply(pa_cvolume *dest, const pa_cvolume *a, const pa_return_val_if_fail(pa_cvolume_valid(a), NULL); pa_return_val_if_fail(pa_cvolume_valid(b), NULL); - for (i = 0; i < a->channels && i < b->channels && i < PA_CHANNELS_MAX; i++) + for (i = 0; i < a->channels && i < b->channels; i++) dest->values[i] = pa_sw_volume_multiply(a->values[i], b->values[i]); dest->channels = (uint8_t) i; @@ -352,6 +352,22 @@ pa_cvolume *pa_sw_cvolume_multiply(pa_cvolume *dest, const pa_cvolume *a, const return dest; } +pa_cvolume *pa_sw_cvolume_multiply_scalar(pa_cvolume *dest, const pa_cvolume *a, pa_volume_t b) { + unsigned i; + + pa_assert(dest); + pa_assert(a); + + pa_return_val_if_fail(pa_cvolume_valid(a), NULL); + + for (i = 0; i < a->channels; i++) + dest->values[i] = pa_sw_volume_multiply(a->values[i], b); + + dest->channels = (uint8_t) i; + + return dest; +} + pa_cvolume *pa_sw_cvolume_divide(pa_cvolume *dest, const pa_cvolume *a, const pa_cvolume *b) { unsigned i; @@ -362,7 +378,7 @@ pa_cvolume *pa_sw_cvolume_divide(pa_cvolume *dest, const pa_cvolume *a, const pa pa_return_val_if_fail(pa_cvolume_valid(a), NULL); pa_return_val_if_fail(pa_cvolume_valid(b), NULL); - for (i = 0; i < a->channels && i < b->channels && i < PA_CHANNELS_MAX; i++) + for (i = 0; i < a->channels && i < b->channels; i++) dest->values[i] = pa_sw_volume_divide(a->values[i], b->values[i]); dest->channels = (uint8_t) i; @@ -370,6 +386,22 @@ pa_cvolume *pa_sw_cvolume_divide(pa_cvolume *dest, const pa_cvolume *a, const pa return dest; } +pa_cvolume *pa_sw_cvolume_divide_scalar(pa_cvolume *dest, const pa_cvolume *a, pa_volume_t b) { + unsigned i; + + pa_assert(dest); + pa_assert(a); + + pa_return_val_if_fail(pa_cvolume_valid(a), NULL); + + for (i = 0; i < a->channels; i++) + dest->values[i] = pa_sw_volume_divide(a->values[i], b); + + dest->channels = (uint8_t) i; + + return dest; +} + int pa_cvolume_valid(const pa_cvolume *v) { unsigned c; -- cgit