diff options
Diffstat (limited to 'media/libopus/celt/mips/kiss_fft_mipsr1.h')
| -rw-r--r-- | media/libopus/celt/mips/kiss_fft_mipsr1.h | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/media/libopus/celt/mips/kiss_fft_mipsr1.h b/media/libopus/celt/mips/kiss_fft_mipsr1.h new file mode 100644 index 0000000000..400ca4de9c --- /dev/null +++ b/media/libopus/celt/mips/kiss_fft_mipsr1.h @@ -0,0 +1,167 @@ +/*Copyright (c) 2013, Xiph.Org Foundation and contributors. + + All rights reserved. + + 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 KISS_FFT_MIPSR1_H +#define KISS_FFT_MIPSR1_H + +#if !defined(KISS_FFT_GUTS_H) +#error "This file should only be included from _kiss_fft_guts.h" +#endif + +#ifdef FIXED_POINT + +#define S_MUL_ADD(a, b, c, d) (S_MUL(a,b)+S_MUL(c,d)) +#define S_MUL_SUB(a, b, c, d) (S_MUL(a,b)-S_MUL(c,d)) + +#undef S_MUL_ADD +static inline int S_MUL_ADD(int a, int b, int c, int d) { + int m; + asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a), "r" ((int)b)); + asm volatile("madd $ac1, %0, %1" : : "r" ((int)c), "r" ((int)d)); + asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m): "i" (15)); + return m; +} + +#undef S_MUL_SUB +static inline int S_MUL_SUB(int a, int b, int c, int d) { + int m; + asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a), "r" ((int)b)); + asm volatile("msub $ac1, %0, %1" : : "r" ((int)c), "r" ((int)d)); + asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m): "i" (15)); + return m; +} + +#undef C_MUL +# define C_MUL(m,a,b) (m=C_MUL_fun(a,b)) +static inline kiss_fft_cpx C_MUL_fun(kiss_fft_cpx a, kiss_twiddle_cpx b) { + kiss_fft_cpx m; + + asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a.r), "r" ((int)b.r)); + asm volatile("msub $ac1, %0, %1" : : "r" ((int)a.i), "r" ((int)b.i)); + asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m.r): "i" (15)); + asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a.r), "r" ((int)b.i)); + asm volatile("madd $ac1, %0, %1" : : "r" ((int)a.i), "r" ((int)b.r)); + asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m.i): "i" (15)); + + return m; +} +#undef C_MULC +# define C_MULC(m,a,b) (m=C_MULC_fun(a,b)) +static inline kiss_fft_cpx C_MULC_fun(kiss_fft_cpx a, kiss_twiddle_cpx b) { + kiss_fft_cpx m; + + asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a.r), "r" ((int)b.r)); + asm volatile("madd $ac1, %0, %1" : : "r" ((int)a.i), "r" ((int)b.i)); + asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m.r): "i" (15)); + asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a.i), "r" ((int)b.r)); + asm volatile("msub $ac1, %0, %1" : : "r" ((int)a.r), "r" ((int)b.i)); + asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m.i): "i" (15)); + + return m; +} + +#endif /* FIXED_POINT */ + +#define OVERRIDE_kf_bfly5 +static void kf_bfly5( + kiss_fft_cpx * Fout, + const size_t fstride, + const kiss_fft_state *st, + int m, + int N, + int mm + ) +{ + kiss_fft_cpx *Fout0,*Fout1,*Fout2,*Fout3,*Fout4; + int i, u; + kiss_fft_cpx scratch[13]; + + const kiss_twiddle_cpx *tw; + kiss_twiddle_cpx ya,yb; + kiss_fft_cpx * Fout_beg = Fout; + +#ifdef FIXED_POINT + ya.r = 10126; + ya.i = -31164; + yb.r = -26510; + yb.i = -19261; +#else + ya = st->twiddles[fstride*m]; + yb = st->twiddles[fstride*2*m]; +#endif + + tw=st->twiddles; + + for (i=0;i<N;i++) + { + Fout = Fout_beg + i*mm; + Fout0=Fout; + Fout1=Fout0+m; + Fout2=Fout0+2*m; + Fout3=Fout0+3*m; + Fout4=Fout0+4*m; + + /* For non-custom modes, m is guaranteed to be a multiple of 4. */ + for ( u=0; u<m; ++u ) { + scratch[0] = *Fout0; + + + C_MUL(scratch[1] ,*Fout1, tw[u*fstride]); + C_MUL(scratch[2] ,*Fout2, tw[2*u*fstride]); + C_MUL(scratch[3] ,*Fout3, tw[3*u*fstride]); + C_MUL(scratch[4] ,*Fout4, tw[4*u*fstride]); + + C_ADD( scratch[7],scratch[1],scratch[4]); + C_SUB( scratch[10],scratch[1],scratch[4]); + C_ADD( scratch[8],scratch[2],scratch[3]); + C_SUB( scratch[9],scratch[2],scratch[3]); + + Fout0->r += scratch[7].r + scratch[8].r; + Fout0->i += scratch[7].i + scratch[8].i; + scratch[5].r = scratch[0].r + S_MUL_ADD(scratch[7].r,ya.r,scratch[8].r,yb.r); + scratch[5].i = scratch[0].i + S_MUL_ADD(scratch[7].i,ya.r,scratch[8].i,yb.r); + + scratch[6].r = S_MUL_ADD(scratch[10].i,ya.i,scratch[9].i,yb.i); + scratch[6].i = -S_MUL_ADD(scratch[10].r,ya.i,scratch[9].r,yb.i); + + C_SUB(*Fout1,scratch[5],scratch[6]); + C_ADD(*Fout4,scratch[5],scratch[6]); + + scratch[11].r = scratch[0].r + S_MUL_ADD(scratch[7].r,yb.r,scratch[8].r,ya.r); + scratch[11].i = scratch[0].i + S_MUL_ADD(scratch[7].i,yb.r,scratch[8].i,ya.r); + + scratch[12].r = S_MUL_SUB(scratch[9].i,ya.i,scratch[10].i,yb.i); + scratch[12].i = S_MUL_SUB(scratch[10].r,yb.i,scratch[9].r,ya.i); + + C_ADD(*Fout2,scratch[11],scratch[12]); + C_SUB(*Fout3,scratch[11],scratch[12]); + + ++Fout0;++Fout1;++Fout2;++Fout3;++Fout4; + } + } +} + + +#endif /* KISS_FFT_MIPSR1_H */ |