PcmDither: convert struct to a class

1 files changed, 13 insertions, 14 deletions

diff --git a/src/PcmDither.hxx b/src/PcmDither.hxx
index 59affa08..10638230 100644
--- a/src/PcmDither.hxx
+++ b/src/PcmDither.hxx
@@ -22,24 +22,23 @@
 
 #include <stdint.h>
 
-struct pcm_dither {
+class PcmDither {
 	int32_t error[3];
 	int32_t random;
-};
 
-static inline void
-pcm_dither_24_init(struct pcm_dither *dither)
-{
-	dither->error[0] = dither->error[1] = dither->error[2] = 0;
-	dither->random = 0;
-}
+public:
+	constexpr PcmDither()
+		:error{0, 0, 0}, random(0) {}
+
+	void Dither24To16(int16_t *dest, const int32_t *src,
+			  const int32_t *src_end);
 
-void
-pcm_dither_24_to_16(struct pcm_dither *dither,
-		    int16_t *dest, const int32_t *src, const int32_t *src_end);
+	void Dither32To16(int16_t *dest, const int32_t *src,
+			  const int32_t *src_end);
 
-void
-pcm_dither_32_to_16(struct pcm_dither *dither,
-		    int16_t *dest, const int32_t *src, const int32_t *src_end);
+private:
+	int16_t Dither24To16(int_fast32_t sample);
+	int16_t Dither32To16(int_fast32_t sample);
+};
 
 #endif