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authorPierre Ossman <ossman@cendio.se>2006-02-21 16:35:12 +0000
committerPierre Ossman <ossman@cendio.se>2006-02-21 16:35:12 +0000
commit7e5123705a4811d168890e35cff2354922777c71 (patch)
tree4c02bba46cb62be8eb5045ffdea5903c8b4df2cf /src/modules/module-waveout.c
parenta10257d680d178d493ccae7a2f273ee6987c2dae (diff)
Hardware volume support on Windows.
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@551 fefdeb5f-60dc-0310-8127-8f9354f1896f
Diffstat (limited to 'src/modules/module-waveout.c')
-rw-r--r--src/modules/module-waveout.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/src/modules/module-waveout.c b/src/modules/module-waveout.c
index 3a8600c7..2176e6e7 100644
--- a/src/modules/module-waveout.c
+++ b/src/modules/module-waveout.c
@@ -48,6 +48,8 @@ PA_MODULE_USAGE("sink_name=<name for the sink> source_name=<name for the source>
#define DEFAULT_SINK_NAME "wave_output"
#define DEFAULT_SOURCE_NAME "wave_input"
+#define WAVEOUT_MAX_VOLUME 0xFFFF
+
struct userdata {
pa_sink *sink;
pa_source *source;
@@ -336,6 +338,42 @@ static void notify_source_cb(pa_source *s) {
u->core->mainloop->defer_enable(u->defer, 1);
}
+static int sink_get_hw_volume_cb(pa_sink *s) {
+ struct userdata *u = s->userdata;
+ DWORD vol;
+ pa_volume_t left, right;
+
+ if (waveOutGetVolume(u->hwo, &vol) != MMSYSERR_NOERROR)
+ return -1;
+
+ left = (vol & 0xFFFF) * PA_VOLUME_NORM / WAVEOUT_MAX_VOLUME;
+ right = ((vol >> 16) & 0xFFFF) * PA_VOLUME_NORM / WAVEOUT_MAX_VOLUME;
+
+ /* Windows supports > 2 channels, except for volume control */
+ if (s->hw_volume.channels > 2)
+ pa_cvolume_set(&s->hw_volume, s->hw_volume.channels, (left + right)/2);
+
+ s->hw_volume.values[0] = left;
+ if (s->hw_volume.channels > 1)
+ s->hw_volume.values[1] = right;
+
+ return 0;
+}
+
+static int sink_set_hw_volume_cb(pa_sink *s) {
+ struct userdata *u = s->userdata;
+ DWORD vol;
+
+ vol = s->hw_volume.values[0] * WAVEOUT_MAX_VOLUME / PA_VOLUME_NORM;
+ if (s->hw_volume.channels > 1)
+ vol |= (s->hw_volume.values[0] * WAVEOUT_MAX_VOLUME / PA_VOLUME_NORM) << 16;
+
+ if (waveOutSetVolume(u->hwo, vol) != MMSYSERR_NOERROR)
+ return -1;
+
+ return 0;
+}
+
static int ss_to_waveformat(pa_sample_spec *ss, LPWAVEFORMATEX wf) {
wf->wFormatTag = WAVE_FORMAT_PCM;
@@ -455,6 +493,8 @@ int pa__init(pa_core *c, pa_module*m) {
assert(u->sink);
u->sink->notify = notify_sink_cb;
u->sink->get_latency = sink_get_latency_cb;
+ u->sink->get_hw_volume = sink_get_hw_volume_cb;
+ u->sink->set_hw_volume = sink_set_hw_volume_cb;
u->sink->userdata = u;
pa_sink_set_owner(u->sink, m);
u->sink->description = pa_sprintf_malloc("Windows waveOut PCM");