diff options
Diffstat (limited to 'src/main/jni/opus/celt/mdct.h')
-rw-r--r-- | src/main/jni/opus/celt/mdct.h | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/src/main/jni/opus/celt/mdct.h b/src/main/jni/opus/celt/mdct.h deleted file mode 100644 index d72182138..000000000 --- a/src/main/jni/opus/celt/mdct.h +++ /dev/null @@ -1,70 +0,0 @@ -/* Copyright (c) 2007-2008 CSIRO - Copyright (c) 2007-2008 Xiph.Org Foundation - Written by Jean-Marc Valin */ -/* - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions - are met: - - - Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - - - Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER - OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -*/ - -/* This is a simple MDCT implementation that uses a N/4 complex FFT - to do most of the work. It should be relatively straightforward to - plug in pretty much and FFT here. - - This replaces the Vorbis FFT (and uses the exact same API), which - was a bit too messy and that was ending up duplicating code - (might as well use the same FFT everywhere). - - The algorithm is similar to (and inspired from) Fabrice Bellard's - MDCT implementation in FFMPEG, but has differences in signs, ordering - and scaling in many places. -*/ - -#ifndef MDCT_H -#define MDCT_H - -#include "opus_defines.h" -#include "kiss_fft.h" -#include "arch.h" - -typedef struct { - int n; - int maxshift; - const kiss_fft_state *kfft[4]; - const kiss_twiddle_scalar * OPUS_RESTRICT trig; -} mdct_lookup; - -int clt_mdct_init(mdct_lookup *l,int N, int maxshift); -void clt_mdct_clear(mdct_lookup *l); - -/** Compute a forward MDCT and scale by 4/N, trashes the input array */ -void clt_mdct_forward(const mdct_lookup *l, kiss_fft_scalar *in, - kiss_fft_scalar * OPUS_RESTRICT out, - const opus_val16 *window, int overlap, int shift, int stride); - -/** Compute a backward MDCT (no scaling) and performs weighted overlap-add - (scales implicitly by 1/2) */ -void clt_mdct_backward(const mdct_lookup *l, kiss_fft_scalar *in, - kiss_fft_scalar * OPUS_RESTRICT out, - const opus_val16 * OPUS_RESTRICT window, int overlap, int shift, int stride); - -#endif |