pcm/PcmDither: inline Dither24To16() and Dither32To16()

src/pcm/PcmDither.cxx

@@ -85,7 +85,7 @@ PcmDither::DitherConvert(typename DT::pointer_type dest,
 		*dest++ = DitherConvert<ST, DT>(*src++);
 }
 
-void
+inline void
 PcmDither::Dither24To16(int16_t *dest, const int32_t *src,
 			const int32_t *src_end)
 {
@@ -94,7 +94,7 @@ PcmDither::Dither24To16(int16_t *dest, const int32_t *src,
 	DitherConvert<ST, DT>(dest, src, src_end);
 }
 
-void
+inline void
 PcmDither::Dither32To16(int16_t *dest, const int32_t *src,
 			const int32_t *src_end)
 {

src/pcm/PcmFormat.cxx

@@ -19,11 +19,12 @@
 
 #include "config.h"
 #include "PcmFormat.hxx"
-#include "PcmDither.hxx"
 #include "PcmBuffer.hxx"
 #include "PcmUtils.hxx"
 #include "Traits.hxx"
 
+#include "PcmDither.cxx" // including the .cxx file to get inlined templates
+
 static void
 pcm_convert_8_to_16(int16_t *out, const int8_t *in, const int8_t *in_end)
 {

test/test_pcm_dither.cxx

@@ -19,7 +19,7 @@
 
 #include "test_pcm_all.hxx"
 #include "test_pcm_util.hxx"
-#include "pcm/PcmDither.hxx"
+#include "pcm/PcmDither.cxx"
 
 void
 PcmDitherTest::TestDither24()