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authorTim Redfern <tim@eclectronics.org>2014-02-17 13:36:38 +0000
committerTim Redfern <tim@eclectronics.org>2014-02-17 13:36:38 +0000
commit22e28216336da876e1fd17f380ce42eaf1446769 (patch)
tree444dad3dc7e2656992d29f34f7bce31970c122a5 /ffmpeg/libavcodec/iirfilter.h
parentae5e8541f6e06e64c28719467cdf366ac57aff31 (diff)
chasing indexing error
Diffstat (limited to 'ffmpeg/libavcodec/iirfilter.h')
-rw-r--r--ffmpeg/libavcodec/iirfilter.h145
1 files changed, 0 insertions, 145 deletions
diff --git a/ffmpeg/libavcodec/iirfilter.h b/ffmpeg/libavcodec/iirfilter.h
deleted file mode 100644
index 4ea6642..0000000
--- a/ffmpeg/libavcodec/iirfilter.h
+++ /dev/null
@@ -1,145 +0,0 @@
-/*
- * IIR filter
- * Copyright (c) 2008 Konstantin Shishkov
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * @file
- * IIR filter interface
- */
-
-#ifndef AVCODEC_IIRFILTER_H
-#define AVCODEC_IIRFILTER_H
-
-#include "avcodec.h"
-
-struct FFIIRFilterCoeffs;
-struct FFIIRFilterState;
-
-enum IIRFilterType{
- FF_FILTER_TYPE_BESSEL,
- FF_FILTER_TYPE_BIQUAD,
- FF_FILTER_TYPE_BUTTERWORTH,
- FF_FILTER_TYPE_CHEBYSHEV,
- FF_FILTER_TYPE_ELLIPTIC,
-};
-
-enum IIRFilterMode{
- FF_FILTER_MODE_LOWPASS,
- FF_FILTER_MODE_HIGHPASS,
- FF_FILTER_MODE_BANDPASS,
- FF_FILTER_MODE_BANDSTOP,
-};
-
-typedef struct FFIIRFilterContext {
- /**
- * Perform IIR filtering on floating-point input samples.
- *
- * @param coeffs pointer to filter coefficients
- * @param state pointer to filter state
- * @param size input length
- * @param src source samples
- * @param sstep source stride
- * @param dst filtered samples (destination may be the same as input)
- * @param dstep destination stride
- */
- void (*filter_flt)(const struct FFIIRFilterCoeffs *coeffs,
- struct FFIIRFilterState *state, int size,
- const float *src, int sstep, float *dst, int dstep);
-} FFIIRFilterContext;
-
-/**
- * Initialize FFIIRFilterContext
- */
-void ff_iir_filter_init(FFIIRFilterContext *f);
-void ff_iir_filter_init_mips(FFIIRFilterContext *f);
-
-/**
- * Initialize filter coefficients.
- *
- * @param avc a pointer to an arbitrary struct of which the first
- * field is a pointer to an AVClass struct
- * @param filt_type filter type (e.g. Butterworth)
- * @param filt_mode filter mode (e.g. lowpass)
- * @param order filter order
- * @param cutoff_ratio cutoff to input frequency ratio
- * @param stopband stopband to input frequency ratio (used by bandpass and bandstop filter modes)
- * @param ripple ripple factor (used only in Chebyshev filters)
- *
- * @return pointer to filter coefficients structure or NULL if filter cannot be created
- */
-struct FFIIRFilterCoeffs* ff_iir_filter_init_coeffs(void *avc,
- enum IIRFilterType filt_type,
- enum IIRFilterMode filt_mode,
- int order, float cutoff_ratio,
- float stopband, float ripple);
-
-/**
- * Create new filter state.
- *
- * @param order filter order
- *
- * @return pointer to new filter state or NULL if state creation fails
- */
-struct FFIIRFilterState* ff_iir_filter_init_state(int order);
-
-/**
- * Free filter coefficients.
- *
- * @param coeffs pointer allocated with ff_iir_filter_init_coeffs()
- */
-void ff_iir_filter_free_coeffs(struct FFIIRFilterCoeffs *coeffs);
-
-/**
- * Free filter state.
- *
- * @param state pointer allocated with ff_iir_filter_init_state()
- */
-void ff_iir_filter_free_state(struct FFIIRFilterState *state);
-
-/**
- * Perform IIR filtering on signed 16-bit input samples.
- *
- * @param coeffs pointer to filter coefficients
- * @param state pointer to filter state
- * @param size input length
- * @param src source samples
- * @param sstep source stride
- * @param dst filtered samples (destination may be the same as input)
- * @param dstep destination stride
- */
-void ff_iir_filter(const struct FFIIRFilterCoeffs *coeffs, struct FFIIRFilterState *state,
- int size, const int16_t *src, int sstep, int16_t *dst, int dstep);
-
-/**
- * Perform IIR filtering on floating-point input samples.
- *
- * @param coeffs pointer to filter coefficients
- * @param state pointer to filter state
- * @param size input length
- * @param src source samples
- * @param sstep source stride
- * @param dst filtered samples (destination may be the same as input)
- * @param dstep destination stride
- */
-void ff_iir_filter_flt(const struct FFIIRFilterCoeffs *coeffs,
- struct FFIIRFilterState *state, int size,
- const float *src, int sstep, float *dst, int dstep);
-
-#endif /* AVCODEC_IIRFILTER_H */