comparison xtract/libxtract.h @ 38:0ea4d6430cfc

Implemented xtract_harmonics

   *
   * Defines a very simple API that provides access to the functions in the library
   * @{
   */
 
-#define XTRACT_FEATURES 43
+#define XTRACT_FEATURES 44
     
 #define LOG_LIMIT 10e-10
 #define VERY_BIG_NUMBER 2e10
 #define SR_LIMIT 192000
 #define BARK_BANDS 26

     BARK_COEFFICIENTS,
     PEAKS,
     MAGNITUDE_SPECTRUM,
     AUTOCORRELATION_FFT,
     MFCC,
-    DCT
+    DCT,
+    HARMONICS
 };
 
 /** \brief Enumeration of feature types */
 enum feature_types_ {
     SCALAR,

 enum return_codes_ {
     SUCCESS,
     MALLOC_FAILED,
     BAD_ARGV,
     BAD_VECTOR_SIZE,
-    NO_RESULT
+    NO_RESULT,
+    FEATURE_NOT_IMPLEMENTED
 };
 
 /**
  *                                                                          
  * \brief An array of pointers to functions that perform the extraction

  * 
  */
 #ifdef XTRACT
 extern int(*xtract[XTRACT_FEATURES])(float *data, int N, void *argv, float *result);
 
-
 /** \brief An array of pointers to function help strings
  *
  * Defined in libxtract.c. As a minimum this will contain pointers to the names of all of the feature extraction functions in the library. This is intended as a 'quick reference' to be queried as necessary.
  */
 extern char *xtract_help_strings[XTRACT_FEATURES];
+
+/** \brief An array of pointers to strings giving function output units
+ *
+ * Defined in libxtract.c. This contains pointers to strings giving the output units of all of the feature extraction functions in the library. This is intended as a 'quick reference' to be queried as necessary.
+ */
+extern char *xtract_units[XTRACT_FEATURES];
+
 #endif
 
 /** \brief A structure to store a set of n_filters Mel filters */
 typedef struct xtract_mel_filter_ {
     int n_filters;