Store the time precision with the device

10 files changed, 24 insertions, 2 deletions

diff --git a/Alc/ALc.c b/Alc/ALc.c
index 93ee4b7d..30fe037c 100644
--- a/Alc/ALc.c
+++ b/Alc/ALc.c
@@ -1995,6 +1995,8 @@ ALC_API ALCdevice* ALC_APIENTRY alcOpenDevice(const ALCchar *deviceName)
 
     device->SamplesPlayed = 0;
 
+    device->TimeRes = 1;
+
     InitUIntMap(&device->BufferMap);
     InitUIntMap(&device->EffectMap);
     InitUIntMap(&device->FilterMap);
diff --git a/Alc/alsa.c b/Alc/alsa.c
index 80825b02..4d1d58b3 100644
--- a/Alc/alsa.c
+++ b/Alc/alsa.c
@@ -695,6 +695,9 @@ static ALCboolean alsa_reset_playback(ALCdevice *device)
 
     psnd_pcm_sw_params_free(sp);
 
+    device->TimeRes = (ALuint64)periodSizeInFrames * 1000000000 / rate;
+    device->Frequency = rate;
+
     SetDefaultChannelOrder(device);
 
     data->size = psnd_pcm_frames_to_bytes(data->pcmHandle, periodSizeInFrames);
@@ -711,7 +714,6 @@ static ALCboolean alsa_reset_playback(ALCdevice *device)
         }
         device->UpdateSize = periodSizeInFrames;
         device->NumUpdates = periods;
-        device->Frequency = rate;
         data->thread = StartThread(ALSANoMMapProc, device);
     }
     else
@@ -724,7 +726,6 @@ static ALCboolean alsa_reset_playback(ALCdevice *device)
         }
         device->UpdateSize = periodSizeInFrames;
         device->NumUpdates = periods;
-        device->Frequency = rate;
         data->thread = StartThread(ALSAProc, device);
     }
     if(data->thread == NULL)
diff --git a/Alc/dsound.c b/Alc/dsound.c
index f636287f..f513f2ef 100644
--- a/Alc/dsound.c
+++ b/Alc/dsound.c
@@ -461,6 +461,8 @@ static ALCboolean DSoundResetPlayback(ALCdevice *device)
 
     if(SUCCEEDED(hr))
     {
+        device->TimeRes = (ALuint64)device->UpdateSize * 1000000000 /
+                          device->Frequency;
         device->Format = format;
         SetDefaultWFXChannelOrder(device);
         pData->thread = StartThread(DSoundProc, device);
diff --git a/Alc/null.c b/Alc/null.c
index be760e7d..43a10624 100644
--- a/Alc/null.c
+++ b/Alc/null.c
@@ -108,6 +108,9 @@ static ALCboolean null_reset_playback(ALCdevice *device)
     }
     SetDefaultWFXChannelOrder(device);
 
+    device->TimeRes = (ALuint64)device->UpdateSize * 1000000000 /
+                      device->Frequency;
+
     data->thread = StartThread(NullProc, device);
     if(data->thread == NULL)
     {
diff --git a/Alc/oss.c b/Alc/oss.c
index 9f3e5ae2..8fda248c 100644
--- a/Alc/oss.c
+++ b/Alc/oss.c
@@ -268,6 +268,8 @@ static ALCboolean oss_reset_playback(ALCdevice *device)
     device->Frequency = ossSpeed;
     device->UpdateSize = info.fragsize / frameSize;
     device->NumUpdates = info.fragments + 1;
+    device->TimeRes = (ALuint64)device->UpdateSize * 1000000000 /
+                      device->Frequency;
 
     data->data_size = device->UpdateSize * frameSize;
     data->mix_data = calloc(1, data->data_size);
diff --git a/Alc/portaudio.c b/Alc/portaudio.c
index 94eca19e..062c403a 100644
--- a/Alc/portaudio.c
+++ b/Alc/portaudio.c
@@ -250,6 +250,8 @@ static ALCboolean pa_reset_playback(ALCdevice *device)
     streamInfo = pPa_GetStreamInfo(data->stream);
     device->Frequency = streamInfo->sampleRate;
     device->UpdateSize = data->update_size;
+    device->TimeRes = (ALuint64)device->UpdateSize * 1000000000 /
+                      device->Frequency;
 
     err = pPa_StartStream(data->stream);
     if(err != paNoError)
diff --git a/Alc/pulseaudio.c b/Alc/pulseaudio.c
index 2769fcd9..9355cc36 100644
--- a/Alc/pulseaudio.c
+++ b/Alc/pulseaudio.c
@@ -938,6 +938,9 @@ static ALCboolean pulse_reset_playback(ALCdevice *device) //{{{
     ppa_stream_set_moved_callback(data->stream, stream_device_callback, device);
     ppa_stream_set_write_callback(data->stream, stream_write_callback, device);
 
+    device->TimeRes = (ALuint64)device->UpdateSize * 1000000000 /
+                      device->Frequency;
+
     data->thread = StartThread(PulseProc, device);
     if(!data->thread)
     {
diff --git a/Alc/solaris.c b/Alc/solaris.c
index cff744ae..4fbb1942 100644
--- a/Alc/solaris.c
+++ b/Alc/solaris.c
@@ -193,6 +193,8 @@ static ALCboolean solaris_reset_playback(ALCdevice *device)
 
     device->Frequency = info.play.sample_rate;
     device->UpdateSize = (info.play.buffer_size/device->NumUpdates) + 1;
+    device->TimeRes = (ALuint64)device->UpdateSize * 1000000000 /
+                      device->Frequency;
 
     data->data_size = device->UpdateSize * frameSize;
     data->mix_data = calloc(1, data->data_size);
diff --git a/Alc/wave.c b/Alc/wave.c
index 61a93570..1b6a41d1 100644
--- a/Alc/wave.c
+++ b/Alc/wave.c
@@ -273,6 +273,8 @@ static ALCboolean wave_reset_playback(ALCdevice *device)
         return ALC_FALSE;
     }
 
+    device->TimeRes = (ALuint64)device->UpdateSize * 1000000000 /
+                      device->Frequency;
     SetDefaultWFXChannelOrder(device);
 
     data->thread = StartThread(WaveProc, device);
diff --git a/OpenAL32/Include/alMain.h b/OpenAL32/Include/alMain.h
index 5791b336..4957b942 100644
--- a/OpenAL32/Include/alMain.h
+++ b/OpenAL32/Include/alMain.h
@@ -410,6 +410,9 @@ struct ALCdevice_struct
     // Number of samples rendered by this device
     ALuint64      SamplesPlayed;
 
+    // Precision of this device's timing
+    ALuint64      TimeRes;
+
     BackendFuncs *Funcs;
     void         *ExtraData; // For the backend's use