pcm/Dsd2Pcm: use `uint8_t` instead of `unsigned char`

src/pcm/Dsd2Pcm.cxx

@@ -175,7 +175,7 @@ Dsd2Pcm::CalcOutputSample(unsigned ffp) const noexcept
 
 void
 Dsd2Pcm::Translate(size_t samples,
-		   const unsigned char *src, ptrdiff_t src_stride,
+		   const uint8_t *src, ptrdiff_t src_stride,
 		   bool lsbf,
 		   float *dst, ptrdiff_t dst_stride) noexcept
 {
@@ -184,7 +184,7 @@ Dsd2Pcm::Translate(size_t samples,
 		unsigned bite1 = *src & 0xFFu;
 		if (lsbf) bite1 = bit_reverse(bite1);
 		fifo[ffp] = bite1; src += src_stride;
-		unsigned char *p = fifo + ((ffp-CTABLES) & FIFOMASK);
+		uint8_t *p = fifo + ((ffp-CTABLES) & FIFOMASK);
 		*p = bit_reverse(*p);
 		*dst = CalcOutputSample(ffp);
 		dst += dst_stride;

src/pcm/Dsd2Pcm.hxx

@@ -32,6 +32,7 @@ or implied, of Sebastian Gesemann.
 #define DSD2PCM_H_INCLUDED
 
 #include <stddef.h>
+#include <stdint.h>
 
 /**
  * A "dsd2pcm engine" for one channel.
@@ -45,7 +46,7 @@ private:
 	/** bit mask for FIFO offsets */
 	static constexpr size_t FIFOMASK = FIFOSIZE - 1;
 
-	unsigned char fifo[FIFOSIZE];
+	uint8_t fifo[FIFOSIZE];
 	unsigned fifopos;
 
 public:
@@ -70,7 +71,7 @@ public:
 	 * @param dst_stride -- dst pointer increment
 	 */
 	void Translate(size_t samples,
-		       const unsigned char *src, ptrdiff_t src_stride,
+		       const uint8_t *src, ptrdiff_t src_stride,
 		       bool lsbitfirst,
 		       float *dst, ptrdiff_t dst_stride) noexcept;