pcm: drop compatibility with libsamplerate older than 0.1.3

configure.ac

@@ -748,20 +748,12 @@ dnl Converter Plugins
 dnl ---------------------------------------------------------------------------
 
 dnl ------------------------------ libsamplerate ------------------------------
-MPD_AUTO_PKG(lsr, SAMPLERATE, [samplerate >= 0.0.15],
+MPD_AUTO_PKG(lsr, SAMPLERATE, [samplerate >= 0.1.3],
 	[libsamplerate resampling], [libsamplerate not found])
 if test x$enable_lsr = xyes; then
 	AC_DEFINE([HAVE_LIBSAMPLERATE], 1,
 		[Define to enable libsamplerate])
 fi
-
-if test x$enable_lsr = xyes; then
-	PKG_CHECK_MODULES([SAMPLERATE_013],
-		[samplerate >= 0.1.3],,
-		[AC_DEFINE([HAVE_LIBSAMPLERATE_NOINT], 1,
-		[libsamplerate doesn't provide src_int_to_float_array() (<0.1.3)])])
-fi
-
 AM_CONDITIONAL(HAVE_LIBSAMPLERATE, test x$enable_lsr = xyes)
 
 dnl ---------------------------------------------------------------------------

src/pcm/PcmResampleLibsamplerate.cxx

@@ -225,26 +225,6 @@ pcm_resample_lsr_16(PcmResampler *state,
 	return dest_buffer;
 }
 
-#ifdef HAVE_LIBSAMPLERATE_NOINT
-
-/* libsamplerate introduced these functions in v0.1.3 */
-
-static void
-src_int_to_float_array(const int *in, float *out, int len)
-{
-	while (len-- > 0)
-		*out++ = *in++ / (float)(1 << (24 - 1));
-}
-
-static void
-src_float_to_int_array (const float *in, int *out, int len)
-{
-	while (len-- > 0)
-		*out++ = *in++ * (float)(1 << (24 - 1));
-}
-
-#endif
-
 const int32_t *
 pcm_resample_lsr_32(PcmResampler *state,
 		    unsigned channels,