00ae2a6f30a76d6af8d2c7a7b24498f7534d3906
2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "libavutil/attributes.h"
26 #include "libavutil/cpu.h"
27 #include "libavutil/ppc/cpu.h"
28 #include "libavutil/ppc/types_altivec.h"
29 #include "libavutil/ppc/util_altivec.h"
30 #include "libavcodec/mpegvideoencdsp.h"
34 static int pix_norm1_altivec(uint8_t *pix
, int line_size
)
37 const vector
unsigned int zero
=
38 (const vector
unsigned int) vec_splat_u32(0);
39 vector
unsigned char perm
= vec_lvsl(0, pix
);
40 vector
unsigned int sv
= (vector
unsigned int) vec_splat_u32(0);
41 vector
signed int sum
;
43 for (i
= 0; i
< 16; i
++) {
44 /* Read the potentially unaligned pixels. */
45 vector
unsigned char pixl
= vec_ld(0, pix
);
46 vector
unsigned char pixr
= vec_ld(15, pix
);
47 vector
unsigned char pixv
= vec_perm(pixl
, pixr
, perm
);
49 /* Square the values, and add them to our sum. */
50 sv
= vec_msum(pixv
, pixv
, sv
);
54 /* Sum up the four partial sums, and put the result into s. */
55 sum
= vec_sums((vector
signed int) sv
, (vector
signed int) zero
);
56 sum
= vec_splat(sum
, 3);
62 static int pix_sum_altivec(uint8_t *pix
, int line_size
)
65 const vector
unsigned int zero
=
66 (const vector
unsigned int) vec_splat_u32(0);
67 vector
unsigned char perm
= vec_lvsl(0, pix
);
68 vector
unsigned int sad
= (vector
unsigned int) vec_splat_u32(0);
69 vector
signed int sumdiffs
;
71 for (i
= 0; i
< 16; i
++) {
72 /* Read the potentially unaligned 16 pixels into t1. */
73 vector
unsigned char pixl
= vec_ld(0, pix
);
74 vector
unsigned char pixr
= vec_ld(15, pix
);
75 vector
unsigned char t1
= vec_perm(pixl
, pixr
, perm
);
77 /* Add each 4 pixel group together and put 4 results into sad. */
78 sad
= vec_sum4s(t1
, sad
);
83 /* Sum up the four partial sums, and put the result into s. */
84 sumdiffs
= vec_sums((vector
signed int) sad
, (vector
signed int) zero
);
85 sumdiffs
= vec_splat(sumdiffs
, 3);
86 vec_ste(sumdiffs
, 0, &s
);
91 #endif /* HAVE_ALTIVEC */
93 av_cold
void ff_mpegvideoencdsp_init_ppc(MpegvideoEncDSPContext
*c
,
94 AVCodecContext
*avctx
)
97 if (!PPC_ALTIVEC(av_get_cpu_flags()))
100 c
->pix_norm1
= pix_norm1_altivec
;
101 c
->pix_sum
= pix_sum_altivec
;
102 #endif /* HAVE_ALTIVEC */