diff options
Diffstat (limited to 'ffmpeg1/libavutil/ppc/float_dsp_altivec.c')
| -rw-r--r-- | ffmpeg1/libavutil/ppc/float_dsp_altivec.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/ffmpeg1/libavutil/ppc/float_dsp_altivec.c b/ffmpeg1/libavutil/ppc/float_dsp_altivec.c new file mode 100644 index 0000000..8cee82c --- /dev/null +++ b/ffmpeg1/libavutil/ppc/float_dsp_altivec.c @@ -0,0 +1,124 @@ +/* + * Copyright (c) 2006 Luca Barbato <lu_zero@gentoo.org> + * + * 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 + */ + +#include "util_altivec.h" +#include "float_dsp_altivec.h" + +void ff_vector_fmul_altivec(float *dst, const float *src0, const float *src1, + int len) +{ + int i; + vector float d0, d1, s, zero = (vector float)vec_splat_u32(0); + for (i = 0; i < len - 7; i += 8) { + d0 = vec_ld( 0, src0 + i); + s = vec_ld( 0, src1 + i); + d1 = vec_ld(16, src0 + i); + d0 = vec_madd(d0, s, zero); + d1 = vec_madd(d1, vec_ld(16, src1 + i), zero); + vec_st(d0, 0, dst + i); + vec_st(d1, 16, dst + i); + } +} + +void ff_vector_fmul_window_altivec(float *dst, const float *src0, + const float *src1, const float *win, int len) +{ + vector float zero, t0, t1, s0, s1, wi, wj; + const vector unsigned char reverse = vcprm(3, 2, 1, 0); + int i, j; + + dst += len; + win += len; + src0 += len; + + zero = (vector float)vec_splat_u32(0); + + for (i = -len * 4, j = len * 4 - 16; i < 0; i += 16, j -= 16) { + s0 = vec_ld(i, src0); + s1 = vec_ld(j, src1); + wi = vec_ld(i, win); + wj = vec_ld(j, win); + + s1 = vec_perm(s1, s1, reverse); + wj = vec_perm(wj, wj, reverse); + + t0 = vec_madd(s0, wj, zero); + t0 = vec_nmsub(s1, wi, t0); + t1 = vec_madd(s0, wi, zero); + t1 = vec_madd(s1, wj, t1); + t1 = vec_perm(t1, t1, reverse); + + vec_st(t0, i, dst); + vec_st(t1, j, dst); + } +} + +void ff_vector_fmul_add_altivec(float *dst, const float *src0, + const float *src1, const float *src2, + int len) +{ + int i; + vector float d, s0, s1, s2, t0, t1, edges; + vector unsigned char align = vec_lvsr(0,dst), + mask = vec_lvsl(0, dst); + + for (i = 0; i < len - 3; i += 4) { + t0 = vec_ld(0, dst + i); + t1 = vec_ld(15, dst + i); + s0 = vec_ld(0, src0 + i); + s1 = vec_ld(0, src1 + i); + s2 = vec_ld(0, src2 + i); + edges = vec_perm(t1, t0, mask); + d = vec_madd(s0, s1, s2); + t1 = vec_perm(d, edges, align); + t0 = vec_perm(edges, d, align); + vec_st(t1, 15, dst + i); + vec_st(t0, 0, dst + i); + } +} + +void ff_vector_fmul_reverse_altivec(float *dst, const float *src0, + const float *src1, int len) +{ + int i; + vector float d, s0, s1, h0, l0, + s2, s3, zero = (vector float) vec_splat_u32(0); + + src1 += len-4; + for(i = 0; i < len - 7; i += 8) { + s1 = vec_ld(0, src1 - i); // [a,b,c,d] + s0 = vec_ld(0, src0 + i); + l0 = vec_mergel(s1, s1); // [c,c,d,d] + s3 = vec_ld(-16, src1 - i); + h0 = vec_mergeh(s1, s1); // [a,a,b,b] + s2 = vec_ld(16, src0 + i); + s1 = vec_mergeh(vec_mergel(l0, h0), // [d,b,d,b] + vec_mergeh(l0, h0)); // [c,a,c,a] + // [d,c,b,a] + l0 = vec_mergel(s3, s3); + d = vec_madd(s0, s1, zero); + h0 = vec_mergeh(s3, s3); + vec_st(d, 0, dst + i); + s3 = vec_mergeh(vec_mergel(l0, h0), + vec_mergeh(l0, h0)); + d = vec_madd(s2, s3, zero); + vec_st(d, 16, dst + i); + } +} |