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