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Viewing changes to meters.lv2/gui/fft.c

  • Committer: Package Import Robot
  • Author(s): Jaromír Mikeš
  • Date: 2015-03-23 18:26:21 UTC
  • mfrom: (1.1.6)
  • Revision ID: package-import@ubuntu.com-20150323182621-bxlw3w09u72u4ned
Tags: 20141101-1
* Imported Upstream version 20141101
* Bump Standards.
* Patch refreshed.

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meters.lv2/gui/fft.c
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#include <stdio.h>
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#include <sys/types.h>
 
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#include <pthread.h>
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#include <fftw3.h>
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#ifndef MIN
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#define MIN(A,B) ( (A) < (B) ? (A) : (B) )
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#endif
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static pthread_mutex_t fftw_planner_lock = PTHREAD_MUTEX_INITIALIZER;
 
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/******************************************************************************
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 * internal FFT abstraction
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 */
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        fftx_reset(ft);
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        pthread_mutex_lock(&fftw_planner_lock);
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        ft->fftplan = fftwf_plan_r2r_1d(window_size, ft->fft_in, ft->fft_out, FFTW_R2HC, FFTW_MEASURE);
 
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        pthread_mutex_unlock(&fftw_planner_lock);
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}
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FFTX_FN_PREFIX
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void fftx_free(struct FFTAnalysis *ft) {
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        if (!ft) return;
 
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        pthread_mutex_lock(&fftw_planner_lock);
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        fftwf_destroy_plan(ft->fftplan);
 
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        pthread_mutex_unlock(&fftw_planner_lock);
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        free(ft->hann_window);
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        free(ft->ringbuf);
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        free(ft->fft_in);
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        free(ft->fft_out);
 
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        fftwf_free(ft->fft_in);
 
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        fftwf_free(ft->fft_out);
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        free(ft->power);
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        free(ft->phase);
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        free(ft->phase_h);