mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
126 lines
3.7 KiB
126 lines
3.7 KiB
/* |
|
* This file is part of Libav. |
|
* |
|
* Libav 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. |
|
* |
|
* Libav 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 Libav; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
|
|
/** |
|
* @file |
|
* Contains misc utility macros and inline functions |
|
*/ |
|
|
|
#ifndef AVUTIL_PPC_UTIL_ALTIVEC_H |
|
#define AVUTIL_PPC_UTIL_ALTIVEC_H |
|
|
|
#include <stdint.h> |
|
|
|
#include "config.h" |
|
|
|
#if HAVE_ALTIVEC_H |
|
#include <altivec.h> |
|
#endif |
|
|
|
#include "types_altivec.h" |
|
|
|
#if HAVE_ALTIVEC |
|
|
|
// used to build registers permutation vectors (vcprm) |
|
// the 's' are for words in the _s_econd vector |
|
#define WORD_0 0x00,0x01,0x02,0x03 |
|
#define WORD_1 0x04,0x05,0x06,0x07 |
|
#define WORD_2 0x08,0x09,0x0a,0x0b |
|
#define WORD_3 0x0c,0x0d,0x0e,0x0f |
|
#define WORD_s0 0x10,0x11,0x12,0x13 |
|
#define WORD_s1 0x14,0x15,0x16,0x17 |
|
#define WORD_s2 0x18,0x19,0x1a,0x1b |
|
#define WORD_s3 0x1c,0x1d,0x1e,0x1f |
|
|
|
#define vcprm(a,b,c,d) (const vec_u8){WORD_ ## a, WORD_ ## b, WORD_ ## c, WORD_ ## d} |
|
|
|
|
|
// Transpose 8x8 matrix of 16-bit elements (in-place) |
|
#define TRANSPOSE8(a,b,c,d,e,f,g,h) \ |
|
do { \ |
|
vec_s16 A1, B1, C1, D1, E1, F1, G1, H1; \ |
|
vec_s16 A2, B2, C2, D2, E2, F2, G2, H2; \ |
|
\ |
|
A1 = vec_mergeh (a, e); \ |
|
B1 = vec_mergel (a, e); \ |
|
C1 = vec_mergeh (b, f); \ |
|
D1 = vec_mergel (b, f); \ |
|
E1 = vec_mergeh (c, g); \ |
|
F1 = vec_mergel (c, g); \ |
|
G1 = vec_mergeh (d, h); \ |
|
H1 = vec_mergel (d, h); \ |
|
\ |
|
A2 = vec_mergeh (A1, E1); \ |
|
B2 = vec_mergel (A1, E1); \ |
|
C2 = vec_mergeh (B1, F1); \ |
|
D2 = vec_mergel (B1, F1); \ |
|
E2 = vec_mergeh (C1, G1); \ |
|
F2 = vec_mergel (C1, G1); \ |
|
G2 = vec_mergeh (D1, H1); \ |
|
H2 = vec_mergel (D1, H1); \ |
|
\ |
|
a = vec_mergeh (A2, E2); \ |
|
b = vec_mergel (A2, E2); \ |
|
c = vec_mergeh (B2, F2); \ |
|
d = vec_mergel (B2, F2); \ |
|
e = vec_mergeh (C2, G2); \ |
|
f = vec_mergel (C2, G2); \ |
|
g = vec_mergeh (D2, H2); \ |
|
h = vec_mergel (D2, H2); \ |
|
} while (0) |
|
|
|
|
|
/** @brief loads unaligned vector @a *src with offset @a offset |
|
and returns it */ |
|
static inline vec_u8 unaligned_load(int offset, uint8_t *src) |
|
{ |
|
register vec_u8 first = vec_ld(offset, src); |
|
register vec_u8 second = vec_ld(offset + 15, src); |
|
register vec_u8 mask = vec_lvsl(offset, src); |
|
return vec_perm(first, second, mask); |
|
} |
|
|
|
/** |
|
* loads vector known misalignment |
|
* @param perm_vec the align permute vector to combine the two loads from lvsl |
|
*/ |
|
static inline vec_u8 load_with_perm_vec(int offset, uint8_t *src, vec_u8 perm_vec) |
|
{ |
|
vec_u8 a = vec_ld(offset, src); |
|
vec_u8 b = vec_ld(offset + 15, src); |
|
return vec_perm(a, b, perm_vec); |
|
} |
|
|
|
#define vec_unaligned_load(b) \ |
|
vec_perm(vec_ld(0, b), vec_ld(15, b), vec_lvsl(0, b)); |
|
|
|
#endif /* HAVE_ALTIVEC */ |
|
|
|
#if HAVE_VSX |
|
#if HAVE_BIGENDIAN |
|
#define vsx_ld_u8_s16(off, p) \ |
|
((vec_s16)vec_mergeh((vec_u8)vec_splat_u8(0), \ |
|
(vec_u8)vec_vsx_ld((off), (p)))) |
|
#else |
|
#define vsx_ld_u8_s16(off, p) \ |
|
((vec_s16)vec_mergeh((vec_u8)vec_vsx_ld((off), (p)), \ |
|
(vec_u8)vec_splat_u8(0))) |
|
#endif /* HAVE_BIGENDIAN */ |
|
#endif /* HAVE_VSX */ |
|
|
|
#endif /* AVUTIL_PPC_UTIL_ALTIVEC_H */
|
|
|