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author | Nanang Izzuddin <nanang@teluu.com> | 2008-06-10 14:09:37 +0000 |
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committer | Nanang Izzuddin <nanang@teluu.com> | 2008-06-10 14:09:37 +0000 |
commit | beaa7b7491e6deccd6c49abc375702e23aa4324a (patch) | |
tree | 9ebf2d154e6c5d7bfc61222a60731d59deb2e89e /third_party/speex/libspeex/kiss_fftr.h | |
parent | 60ce2ec8b88876b89c408ef7b78a4641d1162148 (diff) |
Upgraded Speex version to the latest and reorganized it in local copy (since Speex is now using Git)
git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@2002 74dad513-b988-da41-8d7b-12977e46ad98
Diffstat (limited to 'third_party/speex/libspeex/kiss_fftr.h')
-rw-r--r-- | third_party/speex/libspeex/kiss_fftr.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/third_party/speex/libspeex/kiss_fftr.h b/third_party/speex/libspeex/kiss_fftr.h new file mode 100644 index 00000000..7bfb4233 --- /dev/null +++ b/third_party/speex/libspeex/kiss_fftr.h @@ -0,0 +1,51 @@ +#ifndef KISS_FTR_H +#define KISS_FTR_H + +#include "kiss_fft.h" +#ifdef __cplusplus +extern "C" { +#endif + + +/* + + Real optimized version can save about 45% cpu time vs. complex fft of a real seq. + + + + */ + +typedef struct kiss_fftr_state *kiss_fftr_cfg; + + +kiss_fftr_cfg kiss_fftr_alloc(int nfft,int inverse_fft,void * mem, size_t * lenmem); +/* + nfft must be even + + If you don't care to allocate space, use mem = lenmem = NULL +*/ + + +void kiss_fftr(kiss_fftr_cfg cfg,const kiss_fft_scalar *timedata,kiss_fft_cpx *freqdata); +/* + input timedata has nfft scalar points + output freqdata has nfft/2+1 complex points +*/ + +void kiss_fftr2(kiss_fftr_cfg st,const kiss_fft_scalar *timedata,kiss_fft_scalar *freqdata); + +void kiss_fftri(kiss_fftr_cfg cfg,const kiss_fft_cpx *freqdata,kiss_fft_scalar *timedata); + +void kiss_fftri2(kiss_fftr_cfg st,const kiss_fft_scalar *freqdata, kiss_fft_scalar *timedata); + +/* + input freqdata has nfft/2+1 complex points + output timedata has nfft scalar points +*/ + +#define kiss_fftr_free speex_free + +#ifdef __cplusplus +} +#endif +#endif |