Mercurial > cgi-bin > hgwebdir.cgi > PR > Applications > VSs > VSs__H264__App

annotate libavcodec/ppc/util_altivec.h @ 2:897f711a7157

find changesets by author, revision, files, or words in the commit message
rearrange to work with autoconf
author Nina Engelhardt <nengel@mailbox.tu-berlin.de>
date Tue, 25 Sep 2012 15:55:33 +0200
parents
children
rev   line source
nengel@2 1 /*
nengel@2 2 * This file is part of FFmpeg.
nengel@2 3 *
nengel@2 4 * FFmpeg is free software; you can redistribute it and/or
nengel@2 5 * modify it under the terms of the GNU Lesser General Public
nengel@2 6 * License as published by the Free Software Foundation; either
nengel@2 7 * version 2.1 of the License, or (at your option) any later version.
nengel@2 8 *
nengel@2 9 * FFmpeg is distributed in the hope that it will be useful,
nengel@2 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
nengel@2 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
nengel@2 12 * Lesser General Public License for more details.
nengel@2 13 *
nengel@2 14 * You should have received a copy of the GNU Lesser General Public
nengel@2 15 * License along with FFmpeg; if not, write to the Free Software
nengel@2 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
nengel@2 17 */
nengel@2 18
nengel@2 19 /**
nengel@2 20 * @file
nengel@2 21 * Contains misc utility macros and inline functions
nengel@2 22 */
nengel@2 23
nengel@2 24 #ifndef AVCODEC_PPC_UTIL_ALTIVEC_H
nengel@2 25 #define AVCODEC_PPC_UTIL_ALTIVEC_H
nengel@2 26
nengel@2 27 #include <stdint.h>
nengel@2 28
nengel@2 29 #include "config.h"
nengel@2 30
nengel@2 31 #if HAVE_ALTIVEC_H
nengel@2 32 #include <altivec.h>
nengel@2 33 #endif
nengel@2 34
nengel@2 35 // used to build registers permutation vectors (vcprm)
nengel@2 36 // the 's' are for words in the _s_econd vector
nengel@2 37 #define WORD_0 0x00,0x01,0x02,0x03
nengel@2 38 #define WORD_1 0x04,0x05,0x06,0x07
nengel@2 39 #define WORD_2 0x08,0x09,0x0a,0x0b
nengel@2 40 #define WORD_3 0x0c,0x0d,0x0e,0x0f
nengel@2 41 #define WORD_s0 0x10,0x11,0x12,0x13
nengel@2 42 #define WORD_s1 0x14,0x15,0x16,0x17
nengel@2 43 #define WORD_s2 0x18,0x19,0x1a,0x1b
nengel@2 44 #define WORD_s3 0x1c,0x1d,0x1e,0x1f
nengel@2 45
nengel@2 46 #define vcprm(a,b,c,d) (const vector unsigned char){WORD_ ## a, WORD_ ## b, WORD_ ## c, WORD_ ## d}
nengel@2 47 #define vcii(a,b,c,d) (const vector float){FLOAT_ ## a, FLOAT_ ## b, FLOAT_ ## c, FLOAT_ ## d}
nengel@2 48
nengel@2 49 // vcprmle is used to keep the same index as in the SSE version.
nengel@2 50 // it's the same as vcprm, with the index inversed
nengel@2 51 // ('le' is Little Endian)
nengel@2 52 #define vcprmle(a,b,c,d) vcprm(d,c,b,a)
nengel@2 53
nengel@2 54 // used to build inverse/identity vectors (vcii)
nengel@2 55 // n is _n_egative, p is _p_ositive
nengel@2 56 #define FLOAT_n -1.
nengel@2 57 #define FLOAT_p 1.
nengel@2 58
nengel@2 59
nengel@2 60 // Transpose 8x8 matrix of 16-bit elements (in-place)
nengel@2 61 #define TRANSPOSE8(a,b,c,d,e,f,g,h) \
nengel@2 62 do { \
nengel@2 63 vector signed short A1, B1, C1, D1, E1, F1, G1, H1; \
nengel@2 64 vector signed short A2, B2, C2, D2, E2, F2, G2, H2; \
nengel@2 65 \
nengel@2 66 A1 = vec_mergeh (a, e); \
nengel@2 67 B1 = vec_mergel (a, e); \
nengel@2 68 C1 = vec_mergeh (b, f); \
nengel@2 69 D1 = vec_mergel (b, f); \
nengel@2 70 E1 = vec_mergeh (c, g); \
nengel@2 71 F1 = vec_mergel (c, g); \
nengel@2 72 G1 = vec_mergeh (d, h); \
nengel@2 73 H1 = vec_mergel (d, h); \
nengel@2 74 \
nengel@2 75 A2 = vec_mergeh (A1, E1); \
nengel@2 76 B2 = vec_mergel (A1, E1); \
nengel@2 77 C2 = vec_mergeh (B1, F1); \
nengel@2 78 D2 = vec_mergel (B1, F1); \
nengel@2 79 E2 = vec_mergeh (C1, G1); \
nengel@2 80 F2 = vec_mergel (C1, G1); \
nengel@2 81 G2 = vec_mergeh (D1, H1); \
nengel@2 82 H2 = vec_mergel (D1, H1); \
nengel@2 83 \
nengel@2 84 a = vec_mergeh (A2, E2); \
nengel@2 85 b = vec_mergel (A2, E2); \
nengel@2 86 c = vec_mergeh (B2, F2); \
nengel@2 87 d = vec_mergel (B2, F2); \
nengel@2 88 e = vec_mergeh (C2, G2); \
nengel@2 89 f = vec_mergel (C2, G2); \
nengel@2 90 g = vec_mergeh (D2, H2); \
nengel@2 91 h = vec_mergel (D2, H2); \
nengel@2 92 } while (0)
nengel@2 93
nengel@2 94
nengel@2 95 /** \brief loads unaligned vector \a *src with offset \a offset
nengel@2 96 and returns it */
nengel@2 97 static inline vector unsigned char unaligned_load(int offset, uint8_t *src)
nengel@2 98 {
nengel@2 99 register vector unsigned char first = vec_ld(offset, src);
nengel@2 100 register vector unsigned char second = vec_ld(offset+15, src);
nengel@2 101 register vector unsigned char mask = vec_lvsl(offset, src);
nengel@2 102 return vec_perm(first, second, mask);
nengel@2 103 }
nengel@2 104
nengel@2 105 #endif /* AVCODEC_PPC_UTIL_ALTIVEC_H */