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101 lines
3.2 KiB
101 lines
3.2 KiB
/* |
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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 "config.h" |
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#include <stdint.h> |
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#include "libavutil/attributes.h" |
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#include "libavutil/cpu.h" |
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#include "libavutil/ppc/cpu.h" |
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#include "libavutil/ppc/util_altivec.h" |
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#include "libavcodec/mpegvideoencdsp.h" |
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#if HAVE_ALTIVEC && HAVE_BIGENDIAN |
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static int pix_norm1_altivec(uint8_t *pix, int line_size) |
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{ |
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int i, s = 0; |
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const vector unsigned int zero = |
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(const vector unsigned int) vec_splat_u32(0); |
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vector unsigned char perm = vec_lvsl(0, pix); |
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vector unsigned int sv = (vector unsigned int) vec_splat_u32(0); |
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vector signed int sum; |
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for (i = 0; i < 16; i++) { |
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/* Read the potentially unaligned pixels. */ |
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vector unsigned char pixl = vec_ld(0, pix); |
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vector unsigned char pixr = vec_ld(15, pix); |
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vector unsigned char pixv = vec_perm(pixl, pixr, perm); |
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/* Square the values, and add them to our sum. */ |
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sv = vec_msum(pixv, pixv, sv); |
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pix += line_size; |
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} |
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/* Sum up the four partial sums, and put the result into s. */ |
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sum = vec_sums((vector signed int) sv, (vector signed int) zero); |
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sum = vec_splat(sum, 3); |
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vec_ste(sum, 0, &s); |
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return s; |
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} |
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static int pix_sum_altivec(uint8_t *pix, int line_size) |
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{ |
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int i, s; |
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const vector unsigned int zero = |
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(const vector unsigned int) vec_splat_u32(0); |
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vector unsigned char perm = vec_lvsl(0, pix); |
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vector unsigned int sad = (vector unsigned int) vec_splat_u32(0); |
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vector signed int sumdiffs; |
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for (i = 0; i < 16; i++) { |
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/* Read the potentially unaligned 16 pixels into t1. */ |
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vector unsigned char pixl = vec_ld(0, pix); |
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vector unsigned char pixr = vec_ld(15, pix); |
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vector unsigned char t1 = vec_perm(pixl, pixr, perm); |
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/* Add each 4 pixel group together and put 4 results into sad. */ |
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sad = vec_sum4s(t1, sad); |
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pix += line_size; |
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} |
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/* Sum up the four partial sums, and put the result into s. */ |
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sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero); |
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sumdiffs = vec_splat(sumdiffs, 3); |
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vec_ste(sumdiffs, 0, &s); |
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return s; |
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} |
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#endif /* HAVE_ALTIVEC && HAVE_BIGENDIAN */ |
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av_cold void ff_mpegvideoencdsp_init_ppc(MpegvideoEncDSPContext *c, |
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AVCodecContext *avctx) |
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{ |
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#if HAVE_ALTIVEC && HAVE_BIGENDIAN |
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if (!PPC_ALTIVEC(av_get_cpu_flags())) |
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return; |
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c->pix_norm1 = pix_norm1_altivec; |
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c->pix_sum = pix_sum_altivec; |
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#endif /* HAVE_ALTIVEC && HAVE_BIGENDIAN */ |
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}
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