Redo OSS mixing loop

Alc/oss.c

@@ -79,35 +79,35 @@ static ALuint OSSProc(ALvoid *ptr)
 {
     ALCdevice *pDevice = (ALCdevice*)ptr;
     oss_data *data = (oss_data*)pDevice->ExtraData;
-    int remaining = 0;
     int wrote;
 
     while(!data->killNow)
     {
-        int len = data->data_size - remaining;
+        ALint len = data->data_size;
+        ALubyte *WritePtr = data->mix_data;
 
-        if(len > 0)
-        {
-            SuspendContext(NULL);
-            aluMixData(pDevice->Context, data->mix_data+remaining, len, pDevice->Format);
-            ProcessContext(NULL);
-        }
+        SuspendContext(NULL);
+        aluMixData(pDevice->Context, WritePtr, len, pDevice->Format);
+        ProcessContext(NULL);
 
-        remaining += len;
-        wrote = write(data->fd, data->mix_data, remaining);
-        if(wrote < 0)
+        while(len > 0 && !data->killNow)
         {
-            AL_PRINT("write failed: %s\n", strerror(errno));
-            remaining = 0;
+            wrote = write(data->fd, WritePtr, len);
+            if(wrote < 0)
+            {
+                if(errno != EAGAIN && errno != EWOULDBLOCK)
+                {
+                    AL_PRINT("write failed: %s\n", strerror(errno));
+                    len = 0;
+                }
+                else
+                    Sleep(1);
+                continue;
+            }
+
+            len -= wrote;
+            WritePtr += wrote;
         }
-        else if(wrote > 0)
-        {
-            remaining -= wrote;
-            if(remaining > 0)
-                memmove(data->mix_data, data->mix_data+wrote, remaining);
-        }
-        else
-            Sleep(1);
     }
 
     return 0;