Keep count of the number of samples played

2 files changed, 10 insertions, 0 deletions

diff --git a/Alc/ALc.c b/Alc/ALc.c
index 02e04e58..0cdb9da8 100644
--- a/Alc/ALc.c
+++ b/Alc/ALc.c
@@ -1453,6 +1453,7 @@ ALC_API ALCcontext* ALC_APIENTRY alcCreateContext(ALCdevice *device, const ALCin
 {
     ALCcontext *ALContext;
     ALboolean running;
+    ALuint oldRate;
     ALuint attrIdx;
     void *temp;
     ALuint i;
@@ -1467,6 +1468,7 @@ ALC_API ALCcontext* ALC_APIENTRY alcCreateContext(ALCdevice *device, const ALCin
     }
 
     running = ((device->NumContexts > 0) ? AL_TRUE : AL_FALSE);
+    oldRate = device->Frequency;
 
     // Reset Context Last Error code
     device->LastError = ALC_NO_ERROR;
@@ -1540,6 +1542,11 @@ ALC_API ALCcontext* ALC_APIENTRY alcCreateContext(ALCdevice *device, const ALCin
     }
     aluInitPanning(device);
 
+    // Scale the number of samples played according to the new sample rate
+    device->SamplesPlayed *= device->Frequency;
+    device->SamplesPlayed += oldRate-1;
+    device->SamplesPlayed /= oldRate;
+
     for(i = 0;i < device->NumContexts;i++)
     {
         ALCcontext *context = device->Contexts[i];
@@ -1986,6 +1993,8 @@ ALC_API ALCdevice* ALC_APIENTRY alcOpenDevice(const ALCchar *deviceName)
     device->Contexts = NULL;
     device->NumContexts = 0;
 
+    device->SamplesPlayed = 0;
+
     InitUIntMap(&device->BufferMap);
     InitUIntMap(&device->EffectMap);
     InitUIntMap(&device->FilterMap);
diff --git a/Alc/ALu.c b/Alc/ALu.c
index d92f8311..b276982a 100644
--- a/Alc/ALu.c
+++ b/Alc/ALu.c
@@ -1474,6 +1474,7 @@ ALvoid aluMixData(ALCdevice *device, ALvoid *buffer, ALsizei size)
             }
             ProcessContext(ALContext);
         }
+        device->SamplesPlayed += SamplesToDo;
         ProcessContext(NULL);
 
         //Post processing loop