| 1 | /*
|
|---|
| 2 | * Copyright (c) 2001 Michel Lespinasse
|
|---|
| 3 | *
|
|---|
| 4 | * This library 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 of the License, or (at your option) any later version.
|
|---|
| 8 | *
|
|---|
| 9 | * This library 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.
|
|---|
| 13 | *
|
|---|
| 14 | * You should have received a copy of the GNU Lesser General Public
|
|---|
| 15 | * License along with this library; if not, write to the Free Software
|
|---|
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|---|
| 17 | *
|
|---|
| 18 | */
|
|---|
| 19 |
|
|---|
| 20 | /*
|
|---|
| 21 | * NOTE: This code is based on GPL code from the libmpeg2 project. The
|
|---|
| 22 | * author, Michel Lespinasses, has given explicit permission to release
|
|---|
| 23 | * under LGPL as part of ffmpeg.
|
|---|
| 24 | *
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 | /*
|
|---|
| 28 | * FFMpeg integration by Dieter Shirley
|
|---|
| 29 | *
|
|---|
| 30 | * This file is a direct copy of the altivec idct module from the libmpeg2
|
|---|
| 31 | * project. I've deleted all of the libmpeg2 specific code, renamed the functions and
|
|---|
| 32 | * re-ordered the function parameters. The only change to the IDCT function
|
|---|
| 33 | * itself was to factor out the partial transposition, and to perform a full
|
|---|
| 34 | * transpose at the end of the function.
|
|---|
| 35 | */
|
|---|
| 36 |
|
|---|
| 37 |
|
|---|
| 38 | #include <stdlib.h> /* malloc(), free() */
|
|---|
| 39 | #include <string.h>
|
|---|
| 40 | #include "../dsputil.h"
|
|---|
| 41 |
|
|---|
| 42 | #include "gcc_fixes.h"
|
|---|
| 43 |
|
|---|
| 44 | #include "dsputil_altivec.h"
|
|---|
| 45 |
|
|---|
| 46 | #define vector_s16_t vector signed short
|
|---|
| 47 | #define const_vector_s16_t const_vector signed short
|
|---|
| 48 | #define vector_u16_t vector unsigned short
|
|---|
| 49 | #define vector_s8_t vector signed char
|
|---|
| 50 | #define vector_u8_t vector unsigned char
|
|---|
| 51 | #define vector_s32_t vector signed int
|
|---|
| 52 | #define vector_u32_t vector unsigned int
|
|---|
| 53 |
|
|---|
| 54 | #define IDCT_HALF \
|
|---|
| 55 | /* 1st stage */ \
|
|---|
| 56 | t1 = vec_mradds (a1, vx7, vx1 ); \
|
|---|
| 57 | t8 = vec_mradds (a1, vx1, vec_subs (zero, vx7)); \
|
|---|
| 58 | t7 = vec_mradds (a2, vx5, vx3); \
|
|---|
| 59 | t3 = vec_mradds (ma2, vx3, vx5); \
|
|---|
| 60 | \
|
|---|
| 61 | /* 2nd stage */ \
|
|---|
| 62 | t5 = vec_adds (vx0, vx4); \
|
|---|
| 63 | t0 = vec_subs (vx0, vx4); \
|
|---|
| 64 | t2 = vec_mradds (a0, vx6, vx2); \
|
|---|
| 65 | t4 = vec_mradds (a0, vx2, vec_subs (zero, vx6)); \
|
|---|
| 66 | t6 = vec_adds (t8, t3); \
|
|---|
| 67 | t3 = vec_subs (t8, t3); \
|
|---|
| 68 | t8 = vec_subs (t1, t7); \
|
|---|
| 69 | t1 = vec_adds (t1, t7); \
|
|---|
| 70 | \
|
|---|
| 71 | /* 3rd stage */ \
|
|---|
| 72 | t7 = vec_adds (t5, t2); \
|
|---|
| 73 | t2 = vec_subs (t5, t2); \
|
|---|
| 74 | t5 = vec_adds (t0, t4); \
|
|---|
| 75 | t0 = vec_subs (t0, t4); \
|
|---|
| 76 | t4 = vec_subs (t8, t3); \
|
|---|
| 77 | t3 = vec_adds (t8, t3); \
|
|---|
| 78 | \
|
|---|
| 79 | /* 4th stage */ \
|
|---|
| 80 | vy0 = vec_adds (t7, t1); \
|
|---|
| 81 | vy7 = vec_subs (t7, t1); \
|
|---|
| 82 | vy1 = vec_mradds (c4, t3, t5); \
|
|---|
| 83 | vy6 = vec_mradds (mc4, t3, t5); \
|
|---|
| 84 | vy2 = vec_mradds (c4, t4, t0); \
|
|---|
| 85 | vy5 = vec_mradds (mc4, t4, t0); \
|
|---|
| 86 | vy3 = vec_adds (t2, t6); \
|
|---|
| 87 | vy4 = vec_subs (t2, t6);
|
|---|
| 88 |
|
|---|
| 89 |
|
|---|
| 90 | #define IDCT \
|
|---|
| 91 | vector_s16_t vx0, vx1, vx2, vx3, vx4, vx5, vx6, vx7; \
|
|---|
| 92 | vector_s16_t vy0, vy1, vy2, vy3, vy4, vy5, vy6, vy7; \
|
|---|
| 93 | vector_s16_t a0, a1, a2, ma2, c4, mc4, zero, bias; \
|
|---|
| 94 | vector_s16_t t0, t1, t2, t3, t4, t5, t6, t7, t8; \
|
|---|
| 95 | vector_u16_t shift; \
|
|---|
| 96 | \
|
|---|
| 97 | c4 = vec_splat (constants[0], 0); \
|
|---|
| 98 | a0 = vec_splat (constants[0], 1); \
|
|---|
| 99 | a1 = vec_splat (constants[0], 2); \
|
|---|
| 100 | a2 = vec_splat (constants[0], 3); \
|
|---|
| 101 | mc4 = vec_splat (constants[0], 4); \
|
|---|
| 102 | ma2 = vec_splat (constants[0], 5); \
|
|---|
| 103 | bias = (vector_s16_t)vec_splat ((vector_s32_t)constants[0], 3); \
|
|---|
| 104 | \
|
|---|
| 105 | zero = vec_splat_s16 (0); \
|
|---|
| 106 | shift = vec_splat_u16 (4); \
|
|---|
| 107 | \
|
|---|
| 108 | vx0 = vec_mradds (vec_sl (block[0], shift), constants[1], zero); \
|
|---|
| 109 | vx1 = vec_mradds (vec_sl (block[1], shift), constants[2], zero); \
|
|---|
| 110 | vx2 = vec_mradds (vec_sl (block[2], shift), constants[3], zero); \
|
|---|
| 111 | vx3 = vec_mradds (vec_sl (block[3], shift), constants[4], zero); \
|
|---|
| 112 | vx4 = vec_mradds (vec_sl (block[4], shift), constants[1], zero); \
|
|---|
| 113 | vx5 = vec_mradds (vec_sl (block[5], shift), constants[4], zero); \
|
|---|
| 114 | vx6 = vec_mradds (vec_sl (block[6], shift), constants[3], zero); \
|
|---|
| 115 | vx7 = vec_mradds (vec_sl (block[7], shift), constants[2], zero); \
|
|---|
| 116 | \
|
|---|
| 117 | IDCT_HALF \
|
|---|
| 118 | \
|
|---|
| 119 | vx0 = vec_mergeh (vy0, vy4); \
|
|---|
| 120 | vx1 = vec_mergel (vy0, vy4); \
|
|---|
| 121 | vx2 = vec_mergeh (vy1, vy5); \
|
|---|
| 122 | vx3 = vec_mergel (vy1, vy5); \
|
|---|
| 123 | vx4 = vec_mergeh (vy2, vy6); \
|
|---|
| 124 | vx5 = vec_mergel (vy2, vy6); \
|
|---|
| 125 | vx6 = vec_mergeh (vy3, vy7); \
|
|---|
| 126 | vx7 = vec_mergel (vy3, vy7); \
|
|---|
| 127 | \
|
|---|
| 128 | vy0 = vec_mergeh (vx0, vx4); \
|
|---|
| 129 | vy1 = vec_mergel (vx0, vx4); \
|
|---|
| 130 | vy2 = vec_mergeh (vx1, vx5); \
|
|---|
| 131 | vy3 = vec_mergel (vx1, vx5); \
|
|---|
| 132 | vy4 = vec_mergeh (vx2, vx6); \
|
|---|
| 133 | vy5 = vec_mergel (vx2, vx6); \
|
|---|
| 134 | vy6 = vec_mergeh (vx3, vx7); \
|
|---|
| 135 | vy7 = vec_mergel (vx3, vx7); \
|
|---|
| 136 | \
|
|---|
| 137 | vx0 = vec_adds (vec_mergeh (vy0, vy4), bias); \
|
|---|
| 138 | vx1 = vec_mergel (vy0, vy4); \
|
|---|
| 139 | vx2 = vec_mergeh (vy1, vy5); \
|
|---|
| 140 | vx3 = vec_mergel (vy1, vy5); \
|
|---|
| 141 | vx4 = vec_mergeh (vy2, vy6); \
|
|---|
| 142 | vx5 = vec_mergel (vy2, vy6); \
|
|---|
| 143 | vx6 = vec_mergeh (vy3, vy7); \
|
|---|
| 144 | vx7 = vec_mergel (vy3, vy7); \
|
|---|
| 145 | \
|
|---|
| 146 | IDCT_HALF \
|
|---|
| 147 | \
|
|---|
| 148 | shift = vec_splat_u16 (6); \
|
|---|
| 149 | vx0 = vec_sra (vy0, shift); \
|
|---|
| 150 | vx1 = vec_sra (vy1, shift); \
|
|---|
| 151 | vx2 = vec_sra (vy2, shift); \
|
|---|
| 152 | vx3 = vec_sra (vy3, shift); \
|
|---|
| 153 | vx4 = vec_sra (vy4, shift); \
|
|---|
| 154 | vx5 = vec_sra (vy5, shift); \
|
|---|
| 155 | vx6 = vec_sra (vy6, shift); \
|
|---|
| 156 | vx7 = vec_sra (vy7, shift);
|
|---|
| 157 |
|
|---|
| 158 |
|
|---|
| 159 | static const_vector_s16_t constants[5] = {
|
|---|
| 160 | (vector_s16_t) AVV(23170, 13573, 6518, 21895, -23170, -21895, 32, 31),
|
|---|
| 161 | (vector_s16_t) AVV(16384, 22725, 21407, 19266, 16384, 19266, 21407, 22725),
|
|---|
| 162 | (vector_s16_t) AVV(22725, 31521, 29692, 26722, 22725, 26722, 29692, 31521),
|
|---|
| 163 | (vector_s16_t) AVV(21407, 29692, 27969, 25172, 21407, 25172, 27969, 29692),
|
|---|
| 164 | (vector_s16_t) AVV(19266, 26722, 25172, 22654, 19266, 22654, 25172, 26722)
|
|---|
| 165 | };
|
|---|
| 166 |
|
|---|
| 167 | void idct_put_altivec(uint8_t* dest, int stride, vector_s16_t* block)
|
|---|
| 168 | {
|
|---|
| 169 | POWERPC_PERF_DECLARE(altivec_idct_put_num, 1);
|
|---|
| 170 | #ifdef ALTIVEC_USE_REFERENCE_C_CODE
|
|---|
| 171 | POWERPC_PERF_START_COUNT(altivec_idct_put_num, 1);
|
|---|
| 172 | void simple_idct_put(uint8_t *dest, int line_size, int16_t *block);
|
|---|
| 173 | simple_idct_put(dest, stride, (int16_t*)block);
|
|---|
| 174 | POWERPC_PERF_STOP_COUNT(altivec_idct_put_num, 1);
|
|---|
| 175 | #else /* ALTIVEC_USE_REFERENCE_C_CODE */
|
|---|
| 176 | vector_u8_t tmp;
|
|---|
| 177 |
|
|---|
| 178 | #ifdef POWERPC_PERFORMANCE_REPORT
|
|---|
| 179 | POWERPC_PERF_START_COUNT(altivec_idct_put_num, 1);
|
|---|
| 180 | #endif
|
|---|
| 181 | IDCT
|
|---|
| 182 |
|
|---|
| 183 | #define COPY(dest,src) \
|
|---|
| 184 | tmp = vec_packsu (src, src); \
|
|---|
| 185 | vec_ste ((vector_u32_t)tmp, 0, (unsigned int *)dest); \
|
|---|
| 186 | vec_ste ((vector_u32_t)tmp, 4, (unsigned int *)dest);
|
|---|
| 187 |
|
|---|
| 188 | COPY (dest, vx0) dest += stride;
|
|---|
| 189 | COPY (dest, vx1) dest += stride;
|
|---|
| 190 | COPY (dest, vx2) dest += stride;
|
|---|
| 191 | COPY (dest, vx3) dest += stride;
|
|---|
| 192 | COPY (dest, vx4) dest += stride;
|
|---|
| 193 | COPY (dest, vx5) dest += stride;
|
|---|
| 194 | COPY (dest, vx6) dest += stride;
|
|---|
| 195 | COPY (dest, vx7)
|
|---|
| 196 |
|
|---|
| 197 | POWERPC_PERF_STOP_COUNT(altivec_idct_put_num, 1);
|
|---|
| 198 | #endif /* ALTIVEC_USE_REFERENCE_C_CODE */
|
|---|
| 199 | }
|
|---|
| 200 |
|
|---|
| 201 | void idct_add_altivec(uint8_t* dest, int stride, vector_s16_t* block)
|
|---|
| 202 | {
|
|---|
| 203 | POWERPC_PERF_DECLARE(altivec_idct_add_num, 1);
|
|---|
| 204 | #ifdef ALTIVEC_USE_REFERENCE_C_CODE
|
|---|
| 205 | POWERPC_PERF_START_COUNT(altivec_idct_add_num, 1);
|
|---|
| 206 | void simple_idct_add(uint8_t *dest, int line_size, int16_t *block);
|
|---|
| 207 | simple_idct_add(dest, stride, (int16_t*)block);
|
|---|
| 208 | POWERPC_PERF_STOP_COUNT(altivec_idct_add_num, 1);
|
|---|
| 209 | #else /* ALTIVEC_USE_REFERENCE_C_CODE */
|
|---|
| 210 | vector_u8_t tmp;
|
|---|
| 211 | vector_s16_t tmp2, tmp3;
|
|---|
| 212 | vector_u8_t perm0;
|
|---|
| 213 | vector_u8_t perm1;
|
|---|
| 214 | vector_u8_t p0, p1, p;
|
|---|
| 215 |
|
|---|
| 216 | #ifdef POWERPC_PERFORMANCE_REPORT
|
|---|
| 217 | POWERPC_PERF_START_COUNT(altivec_idct_add_num, 1);
|
|---|
| 218 | #endif
|
|---|
| 219 |
|
|---|
| 220 | IDCT
|
|---|
| 221 |
|
|---|
| 222 | p0 = vec_lvsl (0, dest);
|
|---|
| 223 | p1 = vec_lvsl (stride, dest);
|
|---|
| 224 | p = vec_splat_u8 (-1);
|
|---|
| 225 | perm0 = vec_mergeh (p, p0);
|
|---|
| 226 | perm1 = vec_mergeh (p, p1);
|
|---|
| 227 |
|
|---|
| 228 | #define ADD(dest,src,perm) \
|
|---|
| 229 | /* *(uint64_t *)&tmp = *(uint64_t *)dest; */ \
|
|---|
| 230 | tmp = vec_ld (0, dest); \
|
|---|
| 231 | tmp2 = (vector_s16_t)vec_perm (tmp, (vector_u8_t)zero, perm); \
|
|---|
| 232 | tmp3 = vec_adds (tmp2, src); \
|
|---|
| 233 | tmp = vec_packsu (tmp3, tmp3); \
|
|---|
| 234 | vec_ste ((vector_u32_t)tmp, 0, (unsigned int *)dest); \
|
|---|
| 235 | vec_ste ((vector_u32_t)tmp, 4, (unsigned int *)dest);
|
|---|
| 236 |
|
|---|
| 237 | ADD (dest, vx0, perm0) dest += stride;
|
|---|
| 238 | ADD (dest, vx1, perm1) dest += stride;
|
|---|
| 239 | ADD (dest, vx2, perm0) dest += stride;
|
|---|
| 240 | ADD (dest, vx3, perm1) dest += stride;
|
|---|
| 241 | ADD (dest, vx4, perm0) dest += stride;
|
|---|
| 242 | ADD (dest, vx5, perm1) dest += stride;
|
|---|
| 243 | ADD (dest, vx6, perm0) dest += stride;
|
|---|
| 244 | ADD (dest, vx7, perm1)
|
|---|
| 245 |
|
|---|
| 246 | POWERPC_PERF_STOP_COUNT(altivec_idct_add_num, 1);
|
|---|
| 247 | #endif /* ALTIVEC_USE_REFERENCE_C_CODE */
|
|---|
| 248 | }
|
|---|
| 249 |
|
|---|
