diff options
Diffstat (limited to 'ffmpeg1/libavcodec/ppc/int_altivec.c')
| -rw-r--r-- | ffmpeg1/libavcodec/ppc/int_altivec.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/ffmpeg1/libavcodec/ppc/int_altivec.c b/ffmpeg1/libavcodec/ppc/int_altivec.c new file mode 100644 index 0000000..4386b13 --- /dev/null +++ b/ffmpeg1/libavcodec/ppc/int_altivec.c @@ -0,0 +1,145 @@ +/* + * Copyright (c) 2007 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 + */ + +/** + ** @file + ** integer misc ops. + **/ + +#include "config.h" +#if HAVE_ALTIVEC_H +#include <altivec.h> +#endif + +#include "libavutil/attributes.h" +#include "libavutil/ppc/types_altivec.h" +#include "libavcodec/dsputil.h" + +#include "dsputil_altivec.h" + +static int ssd_int8_vs_int16_altivec(const int8_t *pix1, const int16_t *pix2, + int size) { + int i, size16; + vector signed char vpix1; + vector signed short vpix2, vdiff, vpix1l,vpix1h; + union { vector signed int vscore; + int32_t score[4]; + } u; + u.vscore = vec_splat_s32(0); +// +//XXX lazy way, fix it later + +#define vec_unaligned_load(b) \ + vec_perm(vec_ld(0,b),vec_ld(15,b),vec_lvsl(0, b)); + + size16 = size >> 4; + while(size16) { +// score += (pix1[i]-pix2[i])*(pix1[i]-pix2[i]); + //load pix1 and the first batch of pix2 + + vpix1 = vec_unaligned_load(pix1); + vpix2 = vec_unaligned_load(pix2); + pix2 += 8; + //unpack + vpix1h = vec_unpackh(vpix1); + vdiff = vec_sub(vpix1h, vpix2); + vpix1l = vec_unpackl(vpix1); + // load another batch from pix2 + vpix2 = vec_unaligned_load(pix2); + u.vscore = vec_msum(vdiff, vdiff, u.vscore); + vdiff = vec_sub(vpix1l, vpix2); + u.vscore = vec_msum(vdiff, vdiff, u.vscore); + pix1 += 16; + pix2 += 8; + size16--; + } + u.vscore = vec_sums(u.vscore, vec_splat_s32(0)); + + size %= 16; + for (i = 0; i < size; i++) { + u.score[3] += (pix1[i]-pix2[i])*(pix1[i]-pix2[i]); + } + return u.score[3]; +} + +static int32_t scalarproduct_int16_altivec(const int16_t *v1, const int16_t *v2, + int order) +{ + int i; + LOAD_ZERO; + const vec_s16 *pv; + register vec_s16 vec1; + register vec_s32 res = vec_splat_s32(0), t; + int32_t ires; + + for(i = 0; i < order; i += 8){ + pv = (const vec_s16*)v1; + vec1 = vec_perm(pv[0], pv[1], vec_lvsl(0, v1)); + t = vec_msum(vec1, vec_ld(0, v2), zero_s32v); + res = vec_sums(t, res); + v1 += 8; + v2 += 8; + } + res = vec_splat(res, 3); + vec_ste(res, 0, &ires); + return ires; +} + +static int32_t scalarproduct_and_madd_int16_altivec(int16_t *v1, const int16_t *v2, const int16_t *v3, int order, int mul) +{ + LOAD_ZERO; + vec_s16 *pv1 = (vec_s16*)v1; + register vec_s16 muls = {mul,mul,mul,mul,mul,mul,mul,mul}; + register vec_s16 t0, t1, i0, i1, i4; + register vec_s16 i2 = vec_ld(0, v2), i3 = vec_ld(0, v3); + register vec_s32 res = zero_s32v; + register vec_u8 align = vec_lvsl(0, v2); + int32_t ires; + order >>= 4; + do { + i1 = vec_ld(16, v2); + t0 = vec_perm(i2, i1, align); + i2 = vec_ld(32, v2); + t1 = vec_perm(i1, i2, align); + i0 = pv1[0]; + i1 = pv1[1]; + res = vec_msum(t0, i0, res); + res = vec_msum(t1, i1, res); + i4 = vec_ld(16, v3); + t0 = vec_perm(i3, i4, align); + i3 = vec_ld(32, v3); + t1 = vec_perm(i4, i3, align); + pv1[0] = vec_mladd(t0, muls, i0); + pv1[1] = vec_mladd(t1, muls, i1); + pv1 += 2; + v2 += 8; + v3 += 8; + } while(--order); + res = vec_splat(vec_sums(res, zero_s32v), 3); + vec_ste(res, 0, &ires); + return ires; +} + +av_cold void ff_int_init_altivec(DSPContext *c, AVCodecContext *avctx) +{ + c->ssd_int8_vs_int16 = ssd_int8_vs_int16_altivec; + c->scalarproduct_int16 = scalarproduct_int16_altivec; + c->scalarproduct_and_madd_int16 = scalarproduct_and_madd_int16_altivec; +} |