1 files changed, 149 insertions, 0 deletions
diff --git a/noatun/library/conversion.cpp b/noatun/library/conversion.cpp
new file mode 100644
index 00000000..791b5554
--- /dev/null
+++ b/noatun/library/conversion.cpp
@@ -0,0 +1,149 @@
+#include "noatun/conversion.h"
+
+// inherit the aRts routines
+#include <convert.h>
+
+#include <config.h>
+#include <limits.h>
+
+namespace Conversion
+{
+
+void convertMono8ToFloat(unsigned long samples, unsigned char *from, float *to)
+{
+	Arts::convert_mono_8_float(samples, from, to);
+}
+
+void interpolateMono8ToFloat(unsigned long samples, double start, double speed,
+                             unsigned char *from, float *to)
+{
+	Arts::interpolate_mono_8_float(samples, start, speed, from, to);
+}
+
+void convertMono16leToFloat(unsigned long samples, unsigned char *from, float *to)
+{
+	Arts::convert_mono_16le_float(samples, from, to);
+}
+
+void interpolateMono16leToFloat(unsigned long samples, double startpos, double speed,
+                                unsigned char *from, float *to)
+{
+	Arts::interpolate_mono_16le_float(samples, startpos, speed, from, to);
+}
+
+void convertStereoI8To2Float(unsigned long samples, unsigned char *from,
+                             float *left, float *right)
+{
+	Arts::convert_stereo_i8_2float(samples, from, left, right);
+}
+
+
+void interpolateStereoI8To2Float(unsigned long samples, double startpos, double speed,
+                                 unsigned char *from, float *left, float *right)
+{
+	Arts::interpolate_stereo_i8_2float(samples, startpos, speed, from, left, right);
+}
+
+void convertStereoI16leTo2Float(unsigned long samples, unsigned char *from, float *left,
+                                float *right)
+{
+	Arts::convert_stereo_i16le_2float(samples, from, left, right);
+}
+
+void interpolateStereoI16leTo2Float(unsigned long samples, double startpos, double speed,
+                                    unsigned char *from, float *left, float *right)
+{
+	Arts::interpolate_stereo_i16le_2float(samples, startpos, speed, from, left, right);
+}
+
+void interpolateMonoFloatToFloat(unsigned long samples, double startpos, double speed,
+                                 float *from, float *to)
+{
+	Arts::interpolate_mono_float_float( samples, startpos, speed,	from, to);
+}
+
+void convertStereoIFloatTo2Float(unsigned long samples,	float *from, float *left,
+                                 float *right)
+{
+	Arts::convert_stereo_ifloat_2float(samples, from, left, right);
+}
+
+void interpolateStereoIFloatTo2Float(unsigned long samples, double startpos,
+                                     double speed, float *from, float *left,
+                                     float *right)
+{
+	Arts::interpolate_stereo_ifloat_2float(samples, startpos, speed, from, left, right);
+}
+
+void convertMonoFloatTo16le(unsigned long samples, float *from, unsigned char *to)
+{
+	Arts::convert_mono_float_16le(samples, from, to);
+}
+
+void convertStereo2FloatToI16le(unsigned long samples, float *left, float *right,
+                                unsigned char *to)
+{
+	Arts::convert_stereo_2float_i16le(samples, left, right, to);
+}
+
+void convertMonoFloatTo8(unsigned long samples, float *from, unsigned char *to)
+{
+	Arts::convert_mono_float_8(samples, from, to);
+}
+
+void convertStereo2FloatToI8(unsigned long samples,	float *left, float *right,
+                             unsigned char *to)
+{
+	Arts::convert_stereo_2float_i8(samples, left, right, to);
+}
+
+inline void toLittleEndian(unsigned long length, char *buffer)
+{
+#ifdef WORDS_BIGENDIAN
+	swapEndian(length, buffer);
+#else
+	(void)length;
+	(void)buffer;
+#endif
+}
+
+inline void toBigEndian(unsigned long length, char *buffer)
+{
+#ifndef WORDS_BIGENDIAN
+	swapEndian(length, buffer);
+#else
+	(void)length;
+	(void)buffer;
+#endif
+}
+
+void swapEndian(unsigned long length, char *buffer)
+{
+	// if you use a little-endian non intel box, and  the ASM
+	// version doesn't work, it's safe to use the C version
+#ifdef __i386__
+	__asm__(
+		"shrl $1,%0\n"
+		"jz .l2\n"
+		".l1:\n"
+		"rolw $8,(%1)\n"
+		"incl %1\n"
+		"incl %1\n"
+		"decl %0\n"
+		"jnz .l1\n"
+		".l2:\n"
+		: : "r" (length), "r" (buffer));
+#else
+	while (length--)
+	{
+		register char c=*(buffer+1);
+		*(buffer+1)=*buffer;
+		*(buffer)=c;
+		buffer++; buffer++;
+		--length;
+	}
+#endif
+}
+
+}
+