wasapi:

- fixed int24 Mono to Stereo mixer (affects Mono streams starting in Exclusive mode)
pa_converters: 
 - avoid using 64-bit integer math for Int24_To_Float32 and Int24_To_Int32 under x64 Posix platforms (long is 64-bit there), now using explicit PaInt32 type

src/common/pa_converters.c

@@ -1073,13 +1073,13 @@ static void Int24_To_Float32(
     {
 
 #if defined(PA_LITTLE_ENDIAN)
-        temp = (((long)src[0]) << 8);  
+        temp = (((PaInt32)src[0]) << 8);  
-        temp = temp | (((long)src[1]) << 16);
+        temp = temp | (((PaInt32)src[1]) << 16);
-        temp = temp | (((long)src[2]) << 24);
+        temp = temp | (((PaInt32)src[2]) << 24);
 #elif defined(PA_BIG_ENDIAN)
-        temp = (((long)src[0]) << 24);
+        temp = (((PaInt32)src[0]) << 24);
-        temp = temp | (((long)src[1]) << 16);
+        temp = temp | (((PaInt32)src[1]) << 16);
-        temp = temp | (((long)src[2]) << 8);
+        temp = temp | (((PaInt32)src[2]) << 8);
 #endif
 
         *dest = (float) ((double)temp * const_1_div_2147483648_);
@@ -1106,13 +1106,13 @@ static void Int24_To_Int32(
     {
 
 #if defined(PA_LITTLE_ENDIAN)
-        temp = (((long)src[0]) << 8);  
+        temp = (((PaInt32)src[0]) << 8);  
-        temp = temp | (((long)src[1]) << 16);
+        temp = temp | (((PaInt32)src[1]) << 16);
-        temp = temp | (((long)src[2]) << 24);
+        temp = temp | (((PaInt32)src[2]) << 24);
 #elif defined(PA_BIG_ENDIAN)
-        temp = (((long)src[0]) << 24);
+        temp = (((PaInt32)src[0]) << 24);
-        temp = temp | (((long)src[1]) << 16);
+        temp = temp | (((PaInt32)src[1]) << 16);
-        temp = temp | (((long)src[2]) << 8);
+        temp = temp | (((PaInt32)src[2]) << 8);
 #endif
 
         *dest = temp;

src/hostapi/wasapi/pa_win_wasapi.c

@@ -850,8 +850,8 @@ static BOOL UseWOW64VistaWorkaround()
 
 // ------------------------------------------------------------------------------------------
 #define _WASAPI_MONO_TO_STEREO_MIXER(TYPE)\
-	TYPE * __restrict to   = __to;\
+	TYPE * __restrict to   = (TYPE *)__to;\
-	TYPE * __restrict from = __from;\
+	TYPE * __restrict from = (TYPE *)__from;\
 	TYPE * __restrict end  = from + count;\
 	while (from != end)\
 	{\
@@ -875,10 +875,7 @@ static void _MixMonoToStereo_16(void *__to, void *__from, UINT32 count)
 // ------------------------------------------------------------------------------------------
 static void _MixMonoToStereo_24(void *__to, void *__from, UINT32 count)
 {
-#pragma pack(push, 1)
+	_WASAPI_MONO_TO_STEREO_MIXER(int); // !!! int24 data is contained in 32-bit containers
-	typedef struct wasapi_int24 { BYTE d[3]; } wasapi_int24; //<< 24 bit value, packed to 1 byte to avoid padding
-#pragma pack(pop)
-	_WASAPI_MONO_TO_STEREO_MIXER(wasapi_int24);
 }
 
 // ------------------------------------------------------------------------------------------