1 files changed, 117 insertions, 0 deletions
diff --git a/noatun/library/noatun/conversion.h b/noatun/library/noatun/conversion.h
new file mode 100644
index 00000000..841ed0f8
--- /dev/null
+++ b/noatun/library/noatun/conversion.h
@@ -0,0 +1,117 @@
+#ifndef NOATUN_CONVERT_H
+#define NOATUN_CONVERT_H
+
+/**
+ * Helper functions to convert between sample types
+ * @short sample type conversion
+ **/
+namespace Conversion
+{
+/**
+ * Convert a mono 8 bit group to float
+ **/
+void convertMono8ToFloat(unsigned long samples, unsigned char *from, float *to);
+
+/**
+ * convert a mono 8 bit group to float, at a different speed
+ **/
+void interpolateMono8ToFloat(unsigned long samples, double start, double speed,
+                             unsigned char *from, float *to);
+
+/**
+ * convert a mono 16 bit little-endian stream to float
+ **/
+void convertMono16leToFloat(unsigned long samples, unsigned char *from, float *to);
+
+/**
+ * convert a mono 16 bit little-endian stream to float at a different speed
+ **/
+void interpolateMono16leToFloat(unsigned long samples, double startpos, double speed,
+                                unsigned char *from, float *to);
+
+/**
+ * convert an stereo 8-bit interleaved (Alternating left/right channel) to floats
+ **/
+void convertStereoI8To2Float(unsigned long samples, unsigned char *from,
+                             float *left, float *right);
+
+/**
+ * convert a stereo 8-bit interleaved (alternating left/right channel) to floats,
+ * at a different speed
+ **/
+void interpolateStereoI8To2Float(unsigned long samples, double startpos, double speed,
+                                 unsigned char *from, float *left, float *right);
+/**
+ * convert an interleaved 16 bit little endian stream to two floats
+ **/
+void convertStereoI16leTo2Float(unsigned long samples, unsigned char *from, float *left,
+                                float *right);
+
+/**
+ * convert an interleaved 16 bit little endian stream to two floats at a different
+ * speed
+ **/
+void interpolateStereoI16leTo2Float(unsigned long samples, double startpos, double speed,
+                                    unsigned char *from, float *left, float *right);
+
+/**
+ * convert a float to a float, but at a different speed
+ **/
+void interpolateMonoFloatToFloat(unsigned long samples, double startpos, double speed,
+                                 float *from, float *to);
+
+/**
+ * convert a stereo interleaved float to two floats
+ **/
+void convertStereoIFloatTo2Float(unsigned long samples,	float *from, float *left,
+                                 float *right);
+
+/**
+ * convert a stereo interleaved float to two floats at a different speed
+ **/
+void interpolateStereoIFloatTo2Float(unsigned long samples, double startpos,
+                                     double speed, float *from, float *left,
+                                     float *right);
+
+/**
+ * convert a mono float to a 16 bit little endian float
+ **/
+void convertMonoFloatTo16le(unsigned long samples, float *from, unsigned char *to);
+
+/**
+ * convert a two floats to a 16 bit little endian interleaved float
+ **/
+void convertStereo2FloatToI16le(unsigned long samples, float *left, float *right,
+                                unsigned char *to);
+
+/**
+ * convert a mono float to an 8 bit stream
+ **/
+void convertMonoFloatTo8(unsigned long samples, float *from, unsigned char *to);
+
+/**
+ * convert two floats to an 8 bit interleaved stream
+ **/
+void convertStereo2FloatToI8(unsigned long samples,	float *left, float *right,
+                             unsigned char *to);
+
+/**
+ * to little endian (Intel) with swapEndian
+ * does nothing if this is an intel
+ **/
+inline void toLittleEndian(unsigned long len, char *buffer);
+
+/**
+ * to big endian with swapEndian
+ * does nothing if this isn't an intel
+ **/
+inline void toBigEndian(unsigned long len, char *buffer);
+
+/**
+ * swap the endian, does so on every platform
+ * operates on 16 bits at a time. so loads 16, swaps, and copies them
+ **/
+void swapEndian(unsigned long length, char *buffer);
+}
+
+#endif