Numerous fixes and enhancements, see ChangeLog.

1 files changed, 10 insertions, 10 deletions

diff --git a/xtract/xtract_vector.h b/xtract/xtract_vector.h
index a8b0550..215c782 100644
--- a/xtract/xtract_vector.h
+++ b/xtract/xtract_vector.h
@@ -41,7 +41,7 @@ extern "C" {
  * \param *argv: a pointer to NULL 
  * \param *result: the magnitude spectrum of N values from the array pointed to by *data 
  */
-int xtract_magnitude_spectrum(float *data, int N, void *argv, float *result);
+int xtract_magnitude_spectrum(const float *data, const int N, const void *argv, float *result);
 
 /** \brief Extract autocorrelation from time domain signal using FFT based method
  * 
@@ -50,7 +50,7 @@ int xtract_magnitude_spectrum(float *data, int N, void *argv, float *result);
  * \param *argv: a pointer to NULL 
  * \param *result: the autocorrelation of N values from the array pointed to by *data 
  */
-int xtract_autocorrelation_fft(float *data, int N, void *argv, float *result);
+int xtract_autocorrelation_fft(const float *data, const int N, const void *argv, float *result);
 
 /** \brief Extract Mel Frequency Cepstral Coefficients based on a method described by Rabiner
  * 
@@ -61,7 +61,7 @@ int xtract_autocorrelation_fft(float *data, int N, void *argv, float *result);
  * 
  * The data structure pointed to by *argv must be obtained by first calling xtract_init_mfcc
  */
-int xtract_mfcc(float *data, int N, void *argv, float *result);
+int xtract_mfcc(const float *data, const int N, const void *argv, float *result);
 
 /** \brief Extract the Discrete Cosine transform of a time domain signal
  * \param *data: a pointer to the first element in an array of floats representing an audio vector
@@ -69,7 +69,7 @@ int xtract_mfcc(float *data, int N, void *argv, float *result);
  * \param *argv: a pointer to NULL 
  * \param *result: a pointer to an array containing resultant dct coefficients
  */
-int xtract_dct(float *data, int N, void *argv, float *result);
+int xtract_dct(const float *data, const int N, const void *argv, float *result);
 
 /** \brief Extract autocorrelation from time domain signal using time-domain autocorrelation technique 
  * 
@@ -78,7 +78,7 @@ int xtract_dct(float *data, int N, void *argv, float *result);
  * \param *argv: a pointer to NULL 
  * \param *result: the autocorrelation of N values from the array pointed to by *data 
  */
-int xtract_autocorrelation(float *data, int N, void *argv, float *result);
+int xtract_autocorrelation(const float *data, const int N, const void *argv, float *result);
 
 /** \brief Extract Average Magnitude Difference Function from time domain signal 
  * 
@@ -87,7 +87,7 @@ int xtract_autocorrelation(float *data, int N, void *argv, float *result);
  * \param *argv: a pointer to NULL 
  * \param *result: the AMDF of N values from the array pointed to by *data 
  */
-int xtract_amdf(float *data, int N, void *argv, float *result);
+int xtract_amdf(const float *data, const int N, const void *argv, float *result);
     
 /** \brief Extract Average Squared Difference Function from time domain signal 
  * 
@@ -96,7 +96,7 @@ int xtract_amdf(float *data, int N, void *argv, float *result);
  * \param *argv: a pointer to NULL 
  * \param *result: the ASDF of N values from the array pointed to by *data 
  */
-int xtract_asdf(float *data, int N, void *argv, float *result);
+int xtract_asdf(const float *data, const int N, const void *argv, float *result);
     
 /** \brief Extract Bark band coefficients based on a method   
  * \param *data: a pointer to the first element in an array of floats representing the magnitude spectrum of an audio vector
@@ -107,7 +107,7 @@ int xtract_asdf(float *data, int N, void *argv, float *result);
  * The limits array pointed to by *argv must be obtained by first calling xtract_init_bark
  * 
  */
-int xtract_bark_coefficients(float *data, int N, void *argv, float *result);
+int xtract_bark_coefficients(const float *data, const int N, const void *argv, float *result);
 
 /** \brief Extract the frequency and amplitude of spectral peaks from a magnitude spectrum
  * \param *data: a pointer to the first element in an array of floats representing the magnitude spectrum of an audio vector
@@ -115,7 +115,7 @@ int xtract_bark_coefficients(float *data, int N, void *argv, float *result);
  * \param *argv: a pointer to an array containing peak threshold as percentage below max peak, and sample rate 
  * \param *result: a pointer to an array of size N, containing N/2 freqs and N/2 amplitudes, amplitudes are on a decibel scale with dbFS = 0 
  */
-int xtract_peaks(float *data, int N, void *argv, float *result);
+int xtract_peaks(const float *data, const int N, const void *argv, float *result);
 
 /** \brief Extract the harmonic spectrum of from a of a peak spectrum 
  * \param *data: a pointer to the first element in an array of floats representing the peak spectrum of an audio vector (e.g. *result from  xtract_peaks). It is expected that the first half of the array pointed to by *data will contain frequencies for each peak considered, and the the second half will contain the respective amplitudes
@@ -123,7 +123,7 @@ int xtract_peaks(float *data, int N, void *argv, float *result);
  * \param *argv: a pointer to an array containing the fundamental (f0) of the spectrum, and a threshold (t) where 0<=t<=1.0, and t determines the distance from the nearest harmonic number within which a partial can be considered harmonic.
  * \param *result: a pointer to an array of size N containing N/2 freqs and N/2 amplitudes, amplitudes are on a decibel scale with dbFS = 0
  */
-int xtract_harmonics(float *data, int N, void *argv, float *result);
+int xtract_harmonics(const float *data, const int N, const void *argv, float *result);
 
 /** @} */