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117 lines
3.7 KiB
117 lines
3.7 KiB
/* |
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* Copyright (c) 2015 Luca Barbato <lu_zero@gentoo.org> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "util_altivec.h" |
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#include "float_dsp_vsx.h" |
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void ff_vector_fmul_vsx(float *dst, |
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const float *src0, const float *src1, |
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int len) |
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{ |
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int i; |
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vec_f d0, d1, zero = (vec_f)vec_splat_u32(0); |
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for (i = 0; i < len - 7; i += 8) { |
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d0 = vec_vsx_ld( 0, src0 + i); |
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d1 = vec_vsx_ld(16, src0 + i); |
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d0 = vec_madd(d0, vec_vsx_ld( 0, src1 + i), zero); |
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d1 = vec_madd(d1, vec_vsx_ld(16, src1 + i), zero); |
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vec_vsx_st(d0, 0, dst + i); |
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vec_vsx_st(d1, 16, dst + i); |
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} |
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} |
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void ff_vector_fmul_window_vsx(float *dst, const float *src0, |
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const float *src1, const float *win, |
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int len) |
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{ |
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vec_f zero, t0, t1, s0, s1, wi, wj; |
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const vec_u8 reverse = vcprm(3, 2, 1, 0); |
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int i, j; |
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dst += len; |
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win += len; |
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src0 += len; |
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zero = (vec_f)vec_splat_u32(0); |
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for (i = -len * 4, j = len * 4 - 16; i < 0; i += 16, j -= 16) { |
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s0 = vec_vsx_ld(i, src0); |
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s1 = vec_vsx_ld(j, src1); |
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wi = vec_vsx_ld(i, win); |
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wj = vec_vsx_ld(j, win); |
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s1 = vec_perm(s1, s1, reverse); |
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wj = vec_perm(wj, wj, reverse); |
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t0 = vec_madd(s0, wj, zero); |
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t0 = vec_nmsub(s1, wi, t0); |
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t1 = vec_madd(s0, wi, zero); |
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t1 = vec_madd(s1, wj, t1); |
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t1 = vec_perm(t1, t1, reverse); |
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vec_vsx_st(t0, i, dst); |
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vec_vsx_st(t1, j, dst); |
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} |
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} |
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void ff_vector_fmul_add_vsx(float *dst, const float *src0, |
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const float *src1, const float *src2, |
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int len) |
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{ |
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int i; |
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vec_f d, s0, s1, s2; |
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for (i = 0; i < len - 3; i += 4) { |
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s0 = vec_vsx_ld(0, src0 + i); |
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s1 = vec_vsx_ld(0, src1 + i); |
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s2 = vec_vsx_ld(0, src2 + i); |
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d = vec_madd(s0, s1, s2); |
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vec_vsx_st(d, 0, dst + i); |
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} |
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} |
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void ff_vector_fmul_reverse_vsx(float *dst, const float *src0, |
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const float *src1, int len) |
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{ |
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int i; |
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vec_f d, s0, s1, h0, l0, s2, s3; |
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vec_f zero = (vec_f)vec_splat_u32(0); |
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src1 += len - 4; |
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for (i = 0; i < len - 7; i += 8) { |
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s1 = vec_vsx_ld(0, src1 - i); // [a,b,c,d] |
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s0 = vec_vsx_ld(0, src0 + i); |
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l0 = vec_mergel(s1, s1); // [c,c,d,d] |
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s3 = vec_vsx_ld(-16, src1 - i); |
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h0 = vec_mergeh(s1, s1); // [a,a,b,b] |
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s2 = vec_vsx_ld(16, src0 + i); |
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s1 = vec_mergeh(vec_mergel(l0, h0), // [d,b,d,b] |
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vec_mergeh(l0, h0)); // [c,a,c,a] |
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// [d,c,b,a] |
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l0 = vec_mergel(s3, s3); |
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d = vec_madd(s0, s1, zero); |
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h0 = vec_mergeh(s3, s3); |
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vec_vsx_st(d, 0, dst + i); |
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s3 = vec_mergeh(vec_mergel(l0, h0), |
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vec_mergeh(l0, h0)); |
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d = vec_madd(s2, s3, zero); |
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vec_vsx_st(d, 16, dst + i); |
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} |
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}
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