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Diffstat (limited to 'drivers/opus/celt/arm/celt_ne10_mdct.c')
-rw-r--r--drivers/opus/celt/arm/celt_ne10_mdct.c256
1 files changed, 0 insertions, 256 deletions
diff --git a/drivers/opus/celt/arm/celt_ne10_mdct.c b/drivers/opus/celt/arm/celt_ne10_mdct.c
deleted file mode 100644
index eb407b674f..0000000000
--- a/drivers/opus/celt/arm/celt_ne10_mdct.c
+++ /dev/null
@@ -1,256 +0,0 @@
-/* Copyright (c) 2015 Xiph.Org Foundation
- Written by Viswanath Puttagunta */
-/**
- @file celt_ne10_mdct.c
- @brief ARM Neon optimizations for mdct using NE10 library
- */
-
-/*
- 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.
-*/
-
-#ifndef SKIP_CONFIG_H
-#include "opus/opus_config.h"
-#endif
-
-#include "opus/celt/kiss_fft.h"
-#include "opus/celt/_kiss_fft_guts.h"
-#include "opus/celt/mdct.h"
-#include "opus/celt/stack_alloc.h"
-
-void clt_mdct_forward_neon(const mdct_lookup *l,
- kiss_fft_scalar *in,
- kiss_fft_scalar * OPUS_RESTRICT out,
- const opus_val16 *window,
- int overlap, int shift, int stride, int arch)
-{
- int i;
- int N, N2, N4;
- VARDECL(kiss_fft_scalar, f);
- VARDECL(kiss_fft_cpx, f2);
- const kiss_fft_state *st = l->kfft[shift];
- const kiss_twiddle_scalar *trig;
-
- SAVE_STACK;
-
- N = l->n;
- trig = l->trig;
- for (i=0;i<shift;i++)
- {
- N >>= 1;
- trig += N;
- }
- N2 = N>>1;
- N4 = N>>2;
-
- ALLOC(f, N2, kiss_fft_scalar);
- ALLOC(f2, N4, kiss_fft_cpx);
-
- /* Consider the input to be composed of four blocks: [a, b, c, d] */
- /* Window, shuffle, fold */
- {
- /* Temp pointers to make it really clear to the compiler what we're doing */
- const kiss_fft_scalar * OPUS_RESTRICT xp1 = in+(overlap>>1);
- const kiss_fft_scalar * OPUS_RESTRICT xp2 = in+N2-1+(overlap>>1);
- kiss_fft_scalar * OPUS_RESTRICT yp = f;
- const opus_val16 * OPUS_RESTRICT wp1 = window+(overlap>>1);
- const opus_val16 * OPUS_RESTRICT wp2 = window+(overlap>>1)-1;
- for(i=0;i<((overlap+3)>>2);i++)
- {
- /* Real part arranged as -d-cR, Imag part arranged as -b+aR*/
- *yp++ = MULT16_32_Q15(*wp2, xp1[N2]) + MULT16_32_Q15(*wp1,*xp2);
- *yp++ = MULT16_32_Q15(*wp1, *xp1) - MULT16_32_Q15(*wp2, xp2[-N2]);
- xp1+=2;
- xp2-=2;
- wp1+=2;
- wp2-=2;
- }
- wp1 = window;
- wp2 = window+overlap-1;
- for(;i<N4-((overlap+3)>>2);i++)
- {
- /* Real part arranged as a-bR, Imag part arranged as -c-dR */
- *yp++ = *xp2;
- *yp++ = *xp1;
- xp1+=2;
- xp2-=2;
- }
- for(;i<N4;i++)
- {
- /* Real part arranged as a-bR, Imag part arranged as -c-dR */
- *yp++ = -MULT16_32_Q15(*wp1, xp1[-N2]) + MULT16_32_Q15(*wp2, *xp2);
- *yp++ = MULT16_32_Q15(*wp2, *xp1) + MULT16_32_Q15(*wp1, xp2[N2]);
- xp1+=2;
- xp2-=2;
- wp1+=2;
- wp2-=2;
- }
- }
- /* Pre-rotation */
- {
- kiss_fft_scalar * OPUS_RESTRICT yp = f;
- const kiss_twiddle_scalar *t = &trig[0];
- for(i=0;i<N4;i++)
- {
- kiss_fft_cpx yc;
- kiss_twiddle_scalar t0, t1;
- kiss_fft_scalar re, im, yr, yi;
- t0 = t[i];
- t1 = t[N4+i];
- re = *yp++;
- im = *yp++;
- yr = S_MUL(re,t0) - S_MUL(im,t1);
- yi = S_MUL(im,t0) + S_MUL(re,t1);
- yc.r = yr;
- yc.i = yi;
- f2[i] = yc;
- }
- }
-
- opus_fft(st, f2, (kiss_fft_cpx *)f, arch);
-
- /* Post-rotate */
- {
- /* Temp pointers to make it really clear to the compiler what we're doing */
- const kiss_fft_cpx * OPUS_RESTRICT fp = (kiss_fft_cpx *)f;
- kiss_fft_scalar * OPUS_RESTRICT yp1 = out;
- kiss_fft_scalar * OPUS_RESTRICT yp2 = out+stride*(N2-1);
- const kiss_twiddle_scalar *t = &trig[0];
- /* Temp pointers to make it really clear to the compiler what we're doing */
- for(i=0;i<N4;i++)
- {
- kiss_fft_scalar yr, yi;
- yr = S_MUL(fp->i,t[N4+i]) - S_MUL(fp->r,t[i]);
- yi = S_MUL(fp->r,t[N4+i]) + S_MUL(fp->i,t[i]);
- *yp1 = yr;
- *yp2 = yi;
- fp++;
- yp1 += 2*stride;
- yp2 -= 2*stride;
- }
- }
- RESTORE_STACK;
-}
-
-void clt_mdct_backward_neon(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, int arch)
-{
- int i;
- int N, N2, N4;
- VARDECL(kiss_fft_scalar, f);
- const kiss_twiddle_scalar *trig;
- const kiss_fft_state *st = l->kfft[shift];
-
- N = l->n;
- trig = l->trig;
- for (i=0;i<shift;i++)
- {
- N >>= 1;
- trig += N;
- }
- N2 = N>>1;
- N4 = N>>2;
-
- ALLOC(f, N2, kiss_fft_scalar);
-
- /* Pre-rotate */
- {
- /* Temp pointers to make it really clear to the compiler what we're doing */
- const kiss_fft_scalar * OPUS_RESTRICT xp1 = in;
- const kiss_fft_scalar * OPUS_RESTRICT xp2 = in+stride*(N2-1);
- kiss_fft_scalar * OPUS_RESTRICT yp = f;
- const kiss_twiddle_scalar * OPUS_RESTRICT t = &trig[0];
- for(i=0;i<N4;i++)
- {
- kiss_fft_scalar yr, yi;
- yr = S_MUL(*xp2, t[i]) + S_MUL(*xp1, t[N4+i]);
- yi = S_MUL(*xp1, t[i]) - S_MUL(*xp2, t[N4+i]);
- yp[2*i] = yr;
- yp[2*i+1] = yi;
- xp1+=2*stride;
- xp2-=2*stride;
- }
- }
-
- opus_ifft(st, (kiss_fft_cpx *)f, (kiss_fft_cpx*)(out+(overlap>>1)), arch);
-
- /* Post-rotate and de-shuffle from both ends of the buffer at once to make
- it in-place. */
- {
- kiss_fft_scalar * yp0 = out+(overlap>>1);
- kiss_fft_scalar * yp1 = out+(overlap>>1)+N2-2;
- const kiss_twiddle_scalar *t = &trig[0];
- /* Loop to (N4+1)>>1 to handle odd N4. When N4 is odd, the
- middle pair will be computed twice. */
- for(i=0;i<(N4+1)>>1;i++)
- {
- kiss_fft_scalar re, im, yr, yi;
- kiss_twiddle_scalar t0, t1;
- re = yp0[0];
- im = yp0[1];
- t0 = t[i];
- t1 = t[N4+i];
- /* We'd scale up by 2 here, but instead it's done when mixing the windows */
- yr = S_MUL(re,t0) + S_MUL(im,t1);
- yi = S_MUL(re,t1) - S_MUL(im,t0);
- re = yp1[0];
- im = yp1[1];
- yp0[0] = yr;
- yp1[1] = yi;
-
- t0 = t[(N4-i-1)];
- t1 = t[(N2-i-1)];
- /* We'd scale up by 2 here, but instead it's done when mixing the windows */
- yr = S_MUL(re,t0) + S_MUL(im,t1);
- yi = S_MUL(re,t1) - S_MUL(im,t0);
- yp1[0] = yr;
- yp0[1] = yi;
- yp0 += 2;
- yp1 -= 2;
- }
- }
-
- /* Mirror on both sides for TDAC */
- {
- kiss_fft_scalar * OPUS_RESTRICT xp1 = out+overlap-1;
- kiss_fft_scalar * OPUS_RESTRICT yp1 = out;
- const opus_val16 * OPUS_RESTRICT wp1 = window;
- const opus_val16 * OPUS_RESTRICT wp2 = window+overlap-1;
-
- for(i = 0; i < overlap/2; i++)
- {
- kiss_fft_scalar x1, x2;
- x1 = *xp1;
- x2 = *yp1;
- *yp1++ = MULT16_32_Q15(*wp2, x2) - MULT16_32_Q15(*wp1, x1);
- *xp1-- = MULT16_32_Q15(*wp1, x2) + MULT16_32_Q15(*wp2, x1);
- wp1++;
- wp2--;
- }
- }
- RESTORE_STACK;
-}
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