git.sesse.net Git - ffmpeg/blob - libavcodec/ppc/h264_altivec.c

   1 /*
   2  * Copyright (c) 2004 Romain Dolbeau <romain@dolbeau.org>
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include "libavcodec/dsputil.h"
  22 #include "libavcodec/h264data.h"
  23
  24 #include "dsputil_ppc.h"
  25 #include "dsputil_altivec.h"
  26 #include "util_altivec.h"
  27 #include "types_altivec.h"
  28
  29 #define PUT_OP_U8_ALTIVEC(d, s, dst) d = s
  30 #define AVG_OP_U8_ALTIVEC(d, s, dst) d = vec_avg(dst, s)
  31
  32 #define OP_U8_ALTIVEC                          PUT_OP_U8_ALTIVEC
  33 #define PREFIX_h264_chroma_mc8_altivec         put_h264_chroma_mc8_altivec
  34 #define PREFIX_h264_chroma_mc8_num             altivec_put_h264_chroma_mc8_num
  35 #define PREFIX_h264_qpel16_h_lowpass_altivec   put_h264_qpel16_h_lowpass_altivec
  36 #define PREFIX_h264_qpel16_h_lowpass_num       altivec_put_h264_qpel16_h_lowpass_num
  37 #define PREFIX_h264_qpel16_v_lowpass_altivec   put_h264_qpel16_v_lowpass_altivec
  38 #define PREFIX_h264_qpel16_v_lowpass_num       altivec_put_h264_qpel16_v_lowpass_num
  39 #define PREFIX_h264_qpel16_hv_lowpass_altivec  put_h264_qpel16_hv_lowpass_altivec
  40 #define PREFIX_h264_qpel16_hv_lowpass_num      altivec_put_h264_qpel16_hv_lowpass_num
  41 #include "h264_template_altivec.c"
  42 #undef OP_U8_ALTIVEC
  43 #undef PREFIX_h264_chroma_mc8_altivec
  44 #undef PREFIX_h264_chroma_mc8_num
  45 #undef PREFIX_h264_qpel16_h_lowpass_altivec
  46 #undef PREFIX_h264_qpel16_h_lowpass_num
  47 #undef PREFIX_h264_qpel16_v_lowpass_altivec
  48 #undef PREFIX_h264_qpel16_v_lowpass_num
  49 #undef PREFIX_h264_qpel16_hv_lowpass_altivec
  50 #undef PREFIX_h264_qpel16_hv_lowpass_num
  51
  52 #define OP_U8_ALTIVEC                          AVG_OP_U8_ALTIVEC
  53 #define PREFIX_h264_chroma_mc8_altivec         avg_h264_chroma_mc8_altivec
  54 #define PREFIX_h264_chroma_mc8_num             altivec_avg_h264_chroma_mc8_num
  55 #define PREFIX_h264_qpel16_h_lowpass_altivec   avg_h264_qpel16_h_lowpass_altivec
  56 #define PREFIX_h264_qpel16_h_lowpass_num       altivec_avg_h264_qpel16_h_lowpass_num
  57 #define PREFIX_h264_qpel16_v_lowpass_altivec   avg_h264_qpel16_v_lowpass_altivec
  58 #define PREFIX_h264_qpel16_v_lowpass_num       altivec_avg_h264_qpel16_v_lowpass_num
  59 #define PREFIX_h264_qpel16_hv_lowpass_altivec  avg_h264_qpel16_hv_lowpass_altivec
  60 #define PREFIX_h264_qpel16_hv_lowpass_num      altivec_avg_h264_qpel16_hv_lowpass_num
  61 #include "h264_template_altivec.c"
  62 #undef OP_U8_ALTIVEC
  63 #undef PREFIX_h264_chroma_mc8_altivec
  64 #undef PREFIX_h264_chroma_mc8_num
  65 #undef PREFIX_h264_qpel16_h_lowpass_altivec
  66 #undef PREFIX_h264_qpel16_h_lowpass_num
  67 #undef PREFIX_h264_qpel16_v_lowpass_altivec
  68 #undef PREFIX_h264_qpel16_v_lowpass_num
  69 #undef PREFIX_h264_qpel16_hv_lowpass_altivec
  70 #undef PREFIX_h264_qpel16_hv_lowpass_num
  71
  72 #define H264_MC(OPNAME, SIZE, CODETYPE) \
  73 static void OPNAME ## h264_qpel ## SIZE ## _mc00_ ## CODETYPE (uint8_t *dst, uint8_t *src, int stride){\
  74     OPNAME ## pixels ## SIZE ## _ ## CODETYPE(dst, src, stride, SIZE);\
  75 }\
  76 \
  77 static void OPNAME ## h264_qpel ## SIZE ## _mc10_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){ \
  78     DECLARE_ALIGNED_16(uint8_t, half[SIZE*SIZE]);\
  79     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(half, src, SIZE, stride);\
  80     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, src, half, stride, stride, SIZE);\
  81 }\
  82 \
  83 static void OPNAME ## h264_qpel ## SIZE ## _mc20_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
  84     OPNAME ## h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(dst, src, stride, stride);\
  85 }\
  86 \
  87 static void OPNAME ## h264_qpel ## SIZE ## _mc30_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
  88     DECLARE_ALIGNED_16(uint8_t, half[SIZE*SIZE]);\
  89     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(half, src, SIZE, stride);\
  90     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, src+1, half, stride, stride, SIZE);\
  91 }\
  92 \
  93 static void OPNAME ## h264_qpel ## SIZE ## _mc01_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
  94     DECLARE_ALIGNED_16(uint8_t, half[SIZE*SIZE]);\
  95     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(half, src, SIZE, stride);\
  96     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, src, half, stride, stride, SIZE);\
  97 }\
  98 \
  99 static void OPNAME ## h264_qpel ## SIZE ## _mc02_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 100     OPNAME ## h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(dst, src, stride, stride);\
 101 }\
 102 \
 103 static void OPNAME ## h264_qpel ## SIZE ## _mc03_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 104     DECLARE_ALIGNED_16(uint8_t, half[SIZE*SIZE]);\
 105     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(half, src, SIZE, stride);\
 106     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, src+stride, half, stride, stride, SIZE);\
 107 }\
 108 \
 109 static void OPNAME ## h264_qpel ## SIZE ## _mc11_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 110     DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\
 111     DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\
 112     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src, SIZE, stride);\
 113     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src, SIZE, stride);\
 114     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfV, stride, SIZE, SIZE);\
 115 }\
 116 \
 117 static void OPNAME ## h264_qpel ## SIZE ## _mc31_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 118     DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\
 119     DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\
 120     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src, SIZE, stride);\
 121     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src+1, SIZE, stride);\
 122     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfV, stride, SIZE, SIZE);\
 123 }\
 124 \
 125 static void OPNAME ## h264_qpel ## SIZE ## _mc13_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 126     DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\
 127     DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\
 128     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src + stride, SIZE, stride);\
 129     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src, SIZE, stride);\
 130     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfV, stride, SIZE, SIZE);\
 131 }\
 132 \
 133 static void OPNAME ## h264_qpel ## SIZE ## _mc33_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 134     DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\
 135     DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\
 136     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src + stride, SIZE, stride);\
 137     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src+1, SIZE, stride);\
 138     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfV, stride, SIZE, SIZE);\
 139 }\
 140 \
 141 static void OPNAME ## h264_qpel ## SIZE ## _mc22_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 142     DECLARE_ALIGNED_16(int16_t, tmp[SIZE*(SIZE+8)]);\
 143     OPNAME ## h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(dst, tmp, src, stride, SIZE, stride);\
 144 }\
 145 \
 146 static void OPNAME ## h264_qpel ## SIZE ## _mc21_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 147     DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\
 148     DECLARE_ALIGNED_16(uint8_t, halfHV[SIZE*SIZE]);\
 149     DECLARE_ALIGNED_16(int16_t, tmp[SIZE*(SIZE+8)]);\
 150     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src, SIZE, stride);\
 151     put_h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(halfHV, tmp, src, SIZE, SIZE, stride);\
 152     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfHV, stride, SIZE, SIZE);\
 153 }\
 154 \
 155 static void OPNAME ## h264_qpel ## SIZE ## _mc23_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 156     DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\
 157     DECLARE_ALIGNED_16(uint8_t, halfHV[SIZE*SIZE]);\
 158     DECLARE_ALIGNED_16(int16_t, tmp[SIZE*(SIZE+8)]);\
 159     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src + stride, SIZE, stride);\
 160     put_h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(halfHV, tmp, src, SIZE, SIZE, stride);\
 161     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfHV, stride, SIZE, SIZE);\
 162 }\
 163 \
 164 static void OPNAME ## h264_qpel ## SIZE ## _mc12_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 165     DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\
 166     DECLARE_ALIGNED_16(uint8_t, halfHV[SIZE*SIZE]);\
 167     DECLARE_ALIGNED_16(int16_t, tmp[SIZE*(SIZE+8)]);\
 168     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src, SIZE, stride);\
 169     put_h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(halfHV, tmp, src, SIZE, SIZE, stride);\
 170     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfV, halfHV, stride, SIZE, SIZE);\
 171 }\
 172 \
 173 static void OPNAME ## h264_qpel ## SIZE ## _mc32_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 174     DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\
 175     DECLARE_ALIGNED_16(uint8_t, halfHV[SIZE*SIZE]);\
 176     DECLARE_ALIGNED_16(int16_t, tmp[SIZE*(SIZE+8)]);\
 177     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src+1, SIZE, stride);\
 178     put_h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(halfHV, tmp, src, SIZE, SIZE, stride);\
 179     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfV, halfHV, stride, SIZE, SIZE);\
 180 }\
 181
 182 /* this code assume that stride % 16 == 0 */
 183 void put_no_rnd_h264_chroma_mc8_altivec(uint8_t * dst, uint8_t * src, int stride, int h, int x, int y) {
 184    DECLARE_ALIGNED_16(signed int, ABCD[4]) =
 185                         {((8 - x) * (8 - y)),
 186                          ((    x) * (8 - y)),
 187                          ((8 - x) * (    y)),
 188                          ((    x) * (    y))};
 189     register int i;
 190     vec_u8 fperm;
 191     const vec_s32 vABCD = vec_ld(0, ABCD);
 192     const vec_s16 vA = vec_splat((vec_s16)vABCD, 1);
 193     const vec_s16 vB = vec_splat((vec_s16)vABCD, 3);
 194     const vec_s16 vC = vec_splat((vec_s16)vABCD, 5);
 195     const vec_s16 vD = vec_splat((vec_s16)vABCD, 7);
 196     LOAD_ZERO;
 197     const vec_s16 v28ss = vec_sub(vec_sl(vec_splat_s16(1),vec_splat_u16(5)),vec_splat_s16(4));
 198     const vec_u16 v6us  = vec_splat_u16(6);
 199     register int loadSecond     = (((unsigned long)src) % 16) <= 7 ? 0 : 1;
 200     register int reallyBadAlign = (((unsigned long)src) % 16) == 15 ? 1 : 0;
 201
 202     vec_u8 vsrcAuc, av_uninit(vsrcBuc), vsrcperm0, vsrcperm1;
 203     vec_u8 vsrc0uc, vsrc1uc;
 204     vec_s16 vsrc0ssH, vsrc1ssH;
 205     vec_u8 vsrcCuc, vsrc2uc, vsrc3uc;
 206     vec_s16 vsrc2ssH, vsrc3ssH, psum;
 207     vec_u8 vdst, ppsum, fsum;
 208
 209     if (((unsigned long)dst) % 16 == 0) {
 210         fperm = (vec_u8){0x10, 0x11, 0x12, 0x13,
 211                          0x14, 0x15, 0x16, 0x17,
 212                          0x08, 0x09, 0x0A, 0x0B,
 213                          0x0C, 0x0D, 0x0E, 0x0F};
 214     } else {
 215         fperm = (vec_u8){0x00, 0x01, 0x02, 0x03,
 216                          0x04, 0x05, 0x06, 0x07,
 217                          0x18, 0x19, 0x1A, 0x1B,
 218                          0x1C, 0x1D, 0x1E, 0x1F};
 219     }
 220
 221     vsrcAuc = vec_ld(0, src);
 222
 223     if (loadSecond)
 224         vsrcBuc = vec_ld(16, src);
 225     vsrcperm0 = vec_lvsl(0, src);
 226     vsrcperm1 = vec_lvsl(1, src);
 227
 228     vsrc0uc = vec_perm(vsrcAuc, vsrcBuc, vsrcperm0);
 229     if (reallyBadAlign)
 230         vsrc1uc = vsrcBuc;
 231     else
 232         vsrc1uc = vec_perm(vsrcAuc, vsrcBuc, vsrcperm1);
 233
 234     vsrc0ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc0uc);
 235     vsrc1ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc1uc);
 236
 237     if (!loadSecond) {// -> !reallyBadAlign
 238         for (i = 0 ; i < h ; i++) {
 239
 240
 241             vsrcCuc = vec_ld(stride + 0, src);
 242
 243             vsrc2uc = vec_perm(vsrcCuc, vsrcCuc, vsrcperm0);
 244             vsrc3uc = vec_perm(vsrcCuc, vsrcCuc, vsrcperm1);
 245
 246             vsrc2ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc2uc);
 247             vsrc3ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc3uc);
 248
 249             psum = vec_mladd(vA, vsrc0ssH, vec_splat_s16(0));
 250             psum = vec_mladd(vB, vsrc1ssH, psum);
 251             psum = vec_mladd(vC, vsrc2ssH, psum);
 252             psum = vec_mladd(vD, vsrc3ssH, psum);
 253             psum = vec_add(v28ss, psum);
 254             psum = vec_sra(psum, v6us);
 255
 256             vdst = vec_ld(0, dst);
 257             ppsum = (vec_u8)vec_packsu(psum, psum);
 258             fsum = vec_perm(vdst, ppsum, fperm);
 259
 260             vec_st(fsum, 0, dst);
 261
 262             vsrc0ssH = vsrc2ssH;
 263             vsrc1ssH = vsrc3ssH;
 264
 265             dst += stride;
 266             src += stride;
 267         }
 268     } else {
 269         vec_u8 vsrcDuc;
 270         for (i = 0 ; i < h ; i++) {
 271             vsrcCuc = vec_ld(stride + 0, src);
 272             vsrcDuc = vec_ld(stride + 16, src);
 273
 274             vsrc2uc = vec_perm(vsrcCuc, vsrcDuc, vsrcperm0);
 275             if (reallyBadAlign)
 276                 vsrc3uc = vsrcDuc;
 277             else
 278                 vsrc3uc = vec_perm(vsrcCuc, vsrcDuc, vsrcperm1);
 279
 280             vsrc2ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc2uc);
 281             vsrc3ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc3uc);
 282
 283             psum = vec_mladd(vA, vsrc0ssH, vec_splat_s16(0));
 284             psum = vec_mladd(vB, vsrc1ssH, psum);
 285             psum = vec_mladd(vC, vsrc2ssH, psum);
 286             psum = vec_mladd(vD, vsrc3ssH, psum);
 287             psum = vec_add(v28ss, psum);
 288             psum = vec_sr(psum, v6us);
 289
 290             vdst = vec_ld(0, dst);
 291             ppsum = (vec_u8)vec_pack(psum, psum);
 292             fsum = vec_perm(vdst, ppsum, fperm);
 293
 294             vec_st(fsum, 0, dst);
 295
 296             vsrc0ssH = vsrc2ssH;
 297             vsrc1ssH = vsrc3ssH;
 298
 299             dst += stride;
 300             src += stride;
 301         }
 302     }
 303 }
 304
 305 static inline void put_pixels16_l2_altivec( uint8_t * dst, const uint8_t * src1,
 306                                     const uint8_t * src2, int dst_stride,
 307                                     int src_stride1, int h)
 308 {
 309     int i;
 310     vec_u8 a, b, d, tmp1, tmp2, mask, mask_, edges, align;
 311
 312     mask_ = vec_lvsl(0, src2);
 313
 314     for (i = 0; i < h; i++) {
 315
 316         tmp1 = vec_ld(i * src_stride1, src1);
 317         mask = vec_lvsl(i * src_stride1, src1);
 318         tmp2 = vec_ld(i * src_stride1 + 15, src1);
 319
 320         a = vec_perm(tmp1, tmp2, mask);
 321
 322         tmp1 = vec_ld(i * 16, src2);
 323         tmp2 = vec_ld(i * 16 + 15, src2);
 324
 325         b = vec_perm(tmp1, tmp2, mask_);
 326
 327         tmp1 = vec_ld(0, dst);
 328         mask = vec_lvsl(0, dst);
 329         tmp2 = vec_ld(15, dst);
 330
 331         d = vec_avg(a, b);
 332
 333         edges = vec_perm(tmp2, tmp1, mask);
 334
 335         align = vec_lvsr(0, dst);
 336
 337         tmp2 = vec_perm(d, edges, align);
 338         tmp1 = vec_perm(edges, d, align);
 339
 340         vec_st(tmp2, 15, dst);
 341         vec_st(tmp1, 0 , dst);
 342
 343         dst += dst_stride;
 344     }
 345 }
 346
 347 static inline void avg_pixels16_l2_altivec( uint8_t * dst, const uint8_t * src1,
 348                                     const uint8_t * src2, int dst_stride,
 349                                     int src_stride1, int h)
 350 {
 351     int i;
 352     vec_u8 a, b, d, tmp1, tmp2, mask, mask_, edges, align;
 353
 354     mask_ = vec_lvsl(0, src2);
 355
 356     for (i = 0; i < h; i++) {
 357
 358         tmp1 = vec_ld(i * src_stride1, src1);
 359         mask = vec_lvsl(i * src_stride1, src1);
 360         tmp2 = vec_ld(i * src_stride1 + 15, src1);
 361
 362         a = vec_perm(tmp1, tmp2, mask);
 363
 364         tmp1 = vec_ld(i * 16, src2);
 365         tmp2 = vec_ld(i * 16 + 15, src2);
 366
 367         b = vec_perm(tmp1, tmp2, mask_);
 368
 369         tmp1 = vec_ld(0, dst);
 370         mask = vec_lvsl(0, dst);
 371         tmp2 = vec_ld(15, dst);
 372
 373         d = vec_avg(vec_perm(tmp1, tmp2, mask), vec_avg(a, b));
 374
 375         edges = vec_perm(tmp2, tmp1, mask);
 376
 377         align = vec_lvsr(0, dst);
 378
 379         tmp2 = vec_perm(d, edges, align);
 380         tmp1 = vec_perm(edges, d, align);
 381
 382         vec_st(tmp2, 15, dst);
 383         vec_st(tmp1, 0 , dst);
 384
 385         dst += dst_stride;
 386     }
 387 }
 388
 389 /* Implemented but could be faster
 390 #define put_pixels16_l2_altivec(d,s1,s2,ds,s1s,h) put_pixels16_l2(d,s1,s2,ds,s1s,16,h)
 391 #define avg_pixels16_l2_altivec(d,s1,s2,ds,s1s,h) avg_pixels16_l2(d,s1,s2,ds,s1s,16,h)
 392  */
 393
 394 H264_MC(put_, 16, altivec)
 395 H264_MC(avg_, 16, altivec)
 396
 397
 398 /****************************************************************************
 399  * IDCT transform:
 400  ****************************************************************************/
 401
 402 #define VEC_1D_DCT(vb0,vb1,vb2,vb3,va0,va1,va2,va3)               \
 403     /* 1st stage */                                               \
 404     vz0 = vec_add(vb0,vb2);       /* temp[0] = Y[0] + Y[2] */     \
 405     vz1 = vec_sub(vb0,vb2);       /* temp[1] = Y[0] - Y[2] */     \
 406     vz2 = vec_sra(vb1,vec_splat_u16(1));                          \
 407     vz2 = vec_sub(vz2,vb3);       /* temp[2] = Y[1].1/2 - Y[3] */ \
 408     vz3 = vec_sra(vb3,vec_splat_u16(1));                          \
 409     vz3 = vec_add(vb1,vz3);       /* temp[3] = Y[1] + Y[3].1/2 */ \
 410     /* 2nd stage: output */                                       \
 411     va0 = vec_add(vz0,vz3);       /* x[0] = temp[0] + temp[3] */  \
 412     va1 = vec_add(vz1,vz2);       /* x[1] = temp[1] + temp[2] */  \
 413     va2 = vec_sub(vz1,vz2);       /* x[2] = temp[1] - temp[2] */  \
 414     va3 = vec_sub(vz0,vz3)        /* x[3] = temp[0] - temp[3] */
 415
 416 #define VEC_TRANSPOSE_4(a0,a1,a2,a3,b0,b1,b2,b3) \
 417     b0 = vec_mergeh( a0, a0 ); \
 418     b1 = vec_mergeh( a1, a0 ); \
 419     b2 = vec_mergeh( a2, a0 ); \
 420     b3 = vec_mergeh( a3, a0 ); \
 421     a0 = vec_mergeh( b0, b2 ); \
 422     a1 = vec_mergel( b0, b2 ); \
 423     a2 = vec_mergeh( b1, b3 ); \
 424     a3 = vec_mergel( b1, b3 ); \
 425     b0 = vec_mergeh( a0, a2 ); \
 426     b1 = vec_mergel( a0, a2 ); \
 427     b2 = vec_mergeh( a1, a3 ); \
 428     b3 = vec_mergel( a1, a3 )
 429
 430 #define VEC_LOAD_U8_ADD_S16_STORE_U8(va)                      \
 431     vdst_orig = vec_ld(0, dst);                               \
 432     vdst = vec_perm(vdst_orig, zero_u8v, vdst_mask);          \
 433     vdst_ss = (vec_s16) vec_mergeh(zero_u8v, vdst);         \
 434     va = vec_add(va, vdst_ss);                                \
 435     va_u8 = vec_packsu(va, zero_s16v);                        \
 436     va_u32 = vec_splat((vec_u32)va_u8, 0);                  \
 437     vec_ste(va_u32, element, (uint32_t*)dst);
 438
 439 static void ff_h264_idct_add_altivec(uint8_t *dst, DCTELEM *block, int stride)
 440 {
 441     vec_s16 va0, va1, va2, va3;
 442     vec_s16 vz0, vz1, vz2, vz3;
 443     vec_s16 vtmp0, vtmp1, vtmp2, vtmp3;
 444     vec_u8 va_u8;
 445     vec_u32 va_u32;
 446     vec_s16 vdst_ss;
 447     const vec_u16 v6us = vec_splat_u16(6);
 448     vec_u8 vdst, vdst_orig;
 449     vec_u8 vdst_mask = vec_lvsl(0, dst);
 450     int element = ((unsigned long)dst & 0xf) >> 2;
 451     LOAD_ZERO;
 452
 453     block[0] += 32;  /* add 32 as a DC-level for rounding */
 454
 455     vtmp0 = vec_ld(0,block);
 456     vtmp1 = vec_sld(vtmp0, vtmp0, 8);
 457     vtmp2 = vec_ld(16,block);
 458     vtmp3 = vec_sld(vtmp2, vtmp2, 8);
 459
 460     VEC_1D_DCT(vtmp0,vtmp1,vtmp2,vtmp3,va0,va1,va2,va3);
 461     VEC_TRANSPOSE_4(va0,va1,va2,va3,vtmp0,vtmp1,vtmp2,vtmp3);
 462     VEC_1D_DCT(vtmp0,vtmp1,vtmp2,vtmp3,va0,va1,va2,va3);
 463
 464     va0 = vec_sra(va0,v6us);
 465     va1 = vec_sra(va1,v6us);
 466     va2 = vec_sra(va2,v6us);
 467     va3 = vec_sra(va3,v6us);
 468
 469     VEC_LOAD_U8_ADD_S16_STORE_U8(va0);
 470     dst += stride;
 471     VEC_LOAD_U8_ADD_S16_STORE_U8(va1);
 472     dst += stride;
 473     VEC_LOAD_U8_ADD_S16_STORE_U8(va2);
 474     dst += stride;
 475     VEC_LOAD_U8_ADD_S16_STORE_U8(va3);
 476 }
 477
 478 #define IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7,  d0, d1, d2, d3, d4, d5, d6, d7) {\
 479     /*        a0  = SRC(0) + SRC(4); */ \
 480     vec_s16 a0v = vec_add(s0, s4);    \
 481     /*        a2  = SRC(0) - SRC(4); */ \
 482     vec_s16 a2v = vec_sub(s0, s4);    \
 483     /*        a4  =           (SRC(2)>>1) - SRC(6); */ \
 484     vec_s16 a4v = vec_sub(vec_sra(s2, onev), s6);    \
 485     /*        a6  =           (SRC(6)>>1) + SRC(2); */ \
 486     vec_s16 a6v = vec_add(vec_sra(s6, onev), s2);    \
 487     /*        b0  =         a0 + a6; */ \
 488     vec_s16 b0v = vec_add(a0v, a6v);  \
 489     /*        b2  =         a2 + a4; */ \
 490     vec_s16 b2v = vec_add(a2v, a4v);  \
 491     /*        b4  =         a2 - a4; */ \
 492     vec_s16 b4v = vec_sub(a2v, a4v);  \
 493     /*        b6  =         a0 - a6; */ \
 494     vec_s16 b6v = vec_sub(a0v, a6v);  \
 495     /* a1 =  SRC(5) - SRC(3) - SRC(7) - (SRC(7)>>1); */ \
 496     /*        a1 =             (SRC(5)-SRC(3)) -  (SRC(7)  +  (SRC(7)>>1)); */ \
 497     vec_s16 a1v = vec_sub( vec_sub(s5, s3), vec_add(s7, vec_sra(s7, onev)) ); \
 498     /* a3 =  SRC(7) + SRC(1) - SRC(3) - (SRC(3)>>1); */ \
 499     /*        a3 =             (SRC(7)+SRC(1)) -  (SRC(3)  +  (SRC(3)>>1)); */ \
 500     vec_s16 a3v = vec_sub( vec_add(s7, s1), vec_add(s3, vec_sra(s3, onev)) );\
 501     /* a5 =  SRC(7) - SRC(1) + SRC(5) + (SRC(5)>>1); */ \
 502     /*        a5 =             (SRC(7)-SRC(1)) +   SRC(5) +   (SRC(5)>>1); */ \
 503     vec_s16 a5v = vec_add( vec_sub(s7, s1), vec_add(s5, vec_sra(s5, onev)) );\
 504     /*        a7 =                SRC(5)+SRC(3) +  SRC(1) +   (SRC(1)>>1); */ \
 505     vec_s16 a7v = vec_add( vec_add(s5, s3), vec_add(s1, vec_sra(s1, onev)) );\
 506     /*        b1 =                  (a7>>2)  +  a1; */ \
 507     vec_s16 b1v = vec_add( vec_sra(a7v, twov), a1v); \
 508     /*        b3 =          a3 +        (a5>>2); */ \
 509     vec_s16 b3v = vec_add(a3v, vec_sra(a5v, twov)); \
 510     /*        b5 =                  (a3>>2)  -   a5; */ \
 511     vec_s16 b5v = vec_sub( vec_sra(a3v, twov), a5v); \
 512     /*        b7 =           a7 -        (a1>>2); */ \
 513     vec_s16 b7v = vec_sub( a7v, vec_sra(a1v, twov)); \
 514     /* DST(0,    b0 + b7); */ \
 515     d0 = vec_add(b0v, b7v); \
 516     /* DST(1,    b2 + b5); */ \
 517     d1 = vec_add(b2v, b5v); \
 518     /* DST(2,    b4 + b3); */ \
 519     d2 = vec_add(b4v, b3v); \
 520     /* DST(3,    b6 + b1); */ \
 521     d3 = vec_add(b6v, b1v); \
 522     /* DST(4,    b6 - b1); */ \
 523     d4 = vec_sub(b6v, b1v); \
 524     /* DST(5,    b4 - b3); */ \
 525     d5 = vec_sub(b4v, b3v); \
 526     /* DST(6,    b2 - b5); */ \
 527     d6 = vec_sub(b2v, b5v); \
 528     /* DST(7,    b0 - b7); */ \
 529     d7 = vec_sub(b0v, b7v); \
 530 }
 531
 532 #define ALTIVEC_STORE_SUM_CLIP(dest, idctv, perm_ldv, perm_stv, sel) { \
 533     /* unaligned load */                                       \
 534     vec_u8 hv = vec_ld( 0, dest );                           \
 535     vec_u8 lv = vec_ld( 7, dest );                           \
 536     vec_u8 dstv   = vec_perm( hv, lv, (vec_u8)perm_ldv );  \
 537     vec_s16 idct_sh6 = vec_sra(idctv, sixv);                 \
 538     vec_u16 dst16 = (vec_u16)vec_mergeh(zero_u8v, dstv);   \
 539     vec_s16 idstsum = vec_adds(idct_sh6, (vec_s16)dst16);  \
 540     vec_u8 idstsum8 = vec_packsu(zero_s16v, idstsum);        \
 541     vec_u8 edgehv;                                           \
 542     /* unaligned store */                                      \
 543     vec_u8 bodyv  = vec_perm( idstsum8, idstsum8, perm_stv );\
 544     vec_u8 edgelv = vec_perm( sel, zero_u8v, perm_stv );     \
 545     lv    = vec_sel( lv, bodyv, edgelv );                      \
 546     vec_st( lv, 7, dest );                                     \
 547     hv    = vec_ld( 0, dest );                                 \
 548     edgehv = vec_perm( zero_u8v, sel, perm_stv );              \
 549     hv    = vec_sel( hv, bodyv, edgehv );                      \
 550     vec_st( hv, 0, dest );                                     \
 551  }
 552
 553 void ff_h264_idct8_add_altivec( uint8_t *dst, DCTELEM *dct, int stride ) {
 554     vec_s16 s0, s1, s2, s3, s4, s5, s6, s7;
 555     vec_s16 d0, d1, d2, d3, d4, d5, d6, d7;
 556     vec_s16 idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7;
 557
 558     vec_u8 perm_ldv = vec_lvsl(0, dst);
 559     vec_u8 perm_stv = vec_lvsr(8, dst);
 560
 561     const vec_u16 onev = vec_splat_u16(1);
 562     const vec_u16 twov = vec_splat_u16(2);
 563     const vec_u16 sixv = vec_splat_u16(6);
 564
 565     const vec_u8 sel = (vec_u8) {0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1};
 566     LOAD_ZERO;
 567
 568     dct[0] += 32; // rounding for the >>6 at the end
 569
 570     s0 = vec_ld(0x00, (int16_t*)dct);
 571     s1 = vec_ld(0x10, (int16_t*)dct);
 572     s2 = vec_ld(0x20, (int16_t*)dct);
 573     s3 = vec_ld(0x30, (int16_t*)dct);
 574     s4 = vec_ld(0x40, (int16_t*)dct);
 575     s5 = vec_ld(0x50, (int16_t*)dct);
 576     s6 = vec_ld(0x60, (int16_t*)dct);
 577     s7 = vec_ld(0x70, (int16_t*)dct);
 578
 579     IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7,
 580                      d0, d1, d2, d3, d4, d5, d6, d7);
 581
 582     TRANSPOSE8( d0,  d1,  d2,  d3,  d4,  d5,  d6, d7 );
 583
 584     IDCT8_1D_ALTIVEC(d0,  d1,  d2,  d3,  d4,  d5,  d6, d7,
 585                      idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7);
 586
 587     ALTIVEC_STORE_SUM_CLIP(&dst[0*stride], idct0, perm_ldv, perm_stv, sel);
 588     ALTIVEC_STORE_SUM_CLIP(&dst[1*stride], idct1, perm_ldv, perm_stv, sel);
 589     ALTIVEC_STORE_SUM_CLIP(&dst[2*stride], idct2, perm_ldv, perm_stv, sel);
 590     ALTIVEC_STORE_SUM_CLIP(&dst[3*stride], idct3, perm_ldv, perm_stv, sel);
 591     ALTIVEC_STORE_SUM_CLIP(&dst[4*stride], idct4, perm_ldv, perm_stv, sel);
 592     ALTIVEC_STORE_SUM_CLIP(&dst[5*stride], idct5, perm_ldv, perm_stv, sel);
 593     ALTIVEC_STORE_SUM_CLIP(&dst[6*stride], idct6, perm_ldv, perm_stv, sel);
 594     ALTIVEC_STORE_SUM_CLIP(&dst[7*stride], idct7, perm_ldv, perm_stv, sel);
 595 }
 596
 597 static av_always_inline void h264_idct_dc_add_internal(uint8_t *dst, DCTELEM *block, int stride, int size)
 598 {
 599     vec_s16 dc16;
 600     vec_u8 dcplus, dcminus, v0, v1, v2, v3, aligner;
 601     LOAD_ZERO;
 602     DECLARE_ALIGNED_16(int, dc);
 603     int i;
 604
 605     dc = (block[0] + 32) >> 6;
 606     dc16 = vec_splat((vec_s16) vec_lde(0, &dc), 1);
 607
 608     if (size == 4)
 609         dc16 = vec_sld(dc16, zero_s16v, 8);
 610     dcplus = vec_packsu(dc16, zero_s16v);
 611     dcminus = vec_packsu(vec_sub(zero_s16v, dc16), zero_s16v);
 612
 613     aligner = vec_lvsr(0, dst);
 614     dcplus = vec_perm(dcplus, dcplus, aligner);
 615     dcminus = vec_perm(dcminus, dcminus, aligner);
 616
 617     for (i = 0; i < size; i += 4) {
 618         v0 = vec_ld(0, dst+0*stride);
 619         v1 = vec_ld(0, dst+1*stride);
 620         v2 = vec_ld(0, dst+2*stride);
 621         v3 = vec_ld(0, dst+3*stride);
 622
 623         v0 = vec_adds(v0, dcplus);
 624         v1 = vec_adds(v1, dcplus);
 625         v2 = vec_adds(v2, dcplus);
 626         v3 = vec_adds(v3, dcplus);
 627
 628         v0 = vec_subs(v0, dcminus);
 629         v1 = vec_subs(v1, dcminus);
 630         v2 = vec_subs(v2, dcminus);
 631         v3 = vec_subs(v3, dcminus);
 632
 633         vec_st(v0, 0, dst+0*stride);
 634         vec_st(v1, 0, dst+1*stride);
 635         vec_st(v2, 0, dst+2*stride);
 636         vec_st(v3, 0, dst+3*stride);
 637
 638         dst += 4*stride;
 639     }
 640 }
 641
 642 static void h264_idct_dc_add_altivec(uint8_t *dst, DCTELEM *block, int stride)
 643 {
 644     h264_idct_dc_add_internal(dst, block, stride, 4);
 645 }
 646
 647 static void ff_h264_idct8_dc_add_altivec(uint8_t *dst, DCTELEM *block, int stride)
 648 {
 649     h264_idct_dc_add_internal(dst, block, stride, 8);
 650 }
 651
 652 static void ff_h264_idct_add16_altivec(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){
 653     int i;
 654     for(i=0; i<16; i++){
 655         int nnz = nnzc[ scan8[i] ];
 656         if(nnz){
 657             if(nnz==1 && block[i*16]) h264_idct_dc_add_altivec(dst + block_offset[i], block + i*16, stride);
 658             else                      ff_h264_idct_add_altivec(dst + block_offset[i], block + i*16, stride);
 659         }
 660     }
 661 }
 662
 663 static void ff_h264_idct_add16intra_altivec(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){
 664     int i;
 665     for(i=0; i<16; i++){
 666         if(nnzc[ scan8[i] ]) ff_h264_idct_add_altivec(dst + block_offset[i], block + i*16, stride);
 667         else if(block[i*16]) h264_idct_dc_add_altivec(dst + block_offset[i], block + i*16, stride);
 668     }
 669 }
 670
 671 static void ff_h264_idct8_add4_altivec(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){
 672     int i;
 673     for(i=0; i<16; i+=4){
 674         int nnz = nnzc[ scan8[i] ];
 675         if(nnz){
 676             if(nnz==1 && block[i*16]) ff_h264_idct8_dc_add_altivec(dst + block_offset[i], block + i*16, stride);
 677             else                      ff_h264_idct8_add_altivec   (dst + block_offset[i], block + i*16, stride);
 678         }
 679     }
 680 }
 681
 682 static void ff_h264_idct_add8_altivec(uint8_t **dest, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){
 683     int i;
 684     for(i=16; i<16+8; i++){
 685         if(nnzc[ scan8[i] ])
 686             ff_h264_idct_add_altivec(dest[(i&4)>>2] + block_offset[i], block + i*16, stride);
 687         else if(block[i*16])
 688             h264_idct_dc_add_altivec(dest[(i&4)>>2] + block_offset[i], block + i*16, stride);
 689     }
 690 }
 691
 692 #define transpose4x16(r0, r1, r2, r3) {      \
 693     register vec_u8 r4;                    \
 694     register vec_u8 r5;                    \
 695     register vec_u8 r6;                    \
 696     register vec_u8 r7;                    \
 697                                              \
 698     r4 = vec_mergeh(r0, r2);  /*0, 2 set 0*/ \
 699     r5 = vec_mergel(r0, r2);  /*0, 2 set 1*/ \
 700     r6 = vec_mergeh(r1, r3);  /*1, 3 set 0*/ \
 701     r7 = vec_mergel(r1, r3);  /*1, 3 set 1*/ \
 702                                              \
 703     r0 = vec_mergeh(r4, r6);  /*all set 0*/  \
 704     r1 = vec_mergel(r4, r6);  /*all set 1*/  \
 705     r2 = vec_mergeh(r5, r7);  /*all set 2*/  \
 706     r3 = vec_mergel(r5, r7);  /*all set 3*/  \
 707 }
 708
 709 static inline void write16x4(uint8_t *dst, int dst_stride,
 710                              register vec_u8 r0, register vec_u8 r1,
 711                              register vec_u8 r2, register vec_u8 r3) {
 712     DECLARE_ALIGNED_16(unsigned char, result[64]);
 713     uint32_t *src_int = (uint32_t *)result, *dst_int = (uint32_t *)dst;
 714     int int_dst_stride = dst_stride/4;
 715
 716     vec_st(r0, 0, result);
 717     vec_st(r1, 16, result);
 718     vec_st(r2, 32, result);
 719     vec_st(r3, 48, result);
 720     /* FIXME: there has to be a better way!!!! */
 721     *dst_int = *src_int;
 722     *(dst_int+   int_dst_stride) = *(src_int + 1);
 723     *(dst_int+ 2*int_dst_stride) = *(src_int + 2);
 724     *(dst_int+ 3*int_dst_stride) = *(src_int + 3);
 725     *(dst_int+ 4*int_dst_stride) = *(src_int + 4);
 726     *(dst_int+ 5*int_dst_stride) = *(src_int + 5);
 727     *(dst_int+ 6*int_dst_stride) = *(src_int + 6);
 728     *(dst_int+ 7*int_dst_stride) = *(src_int + 7);
 729     *(dst_int+ 8*int_dst_stride) = *(src_int + 8);
 730     *(dst_int+ 9*int_dst_stride) = *(src_int + 9);
 731     *(dst_int+10*int_dst_stride) = *(src_int + 10);
 732     *(dst_int+11*int_dst_stride) = *(src_int + 11);
 733     *(dst_int+12*int_dst_stride) = *(src_int + 12);
 734     *(dst_int+13*int_dst_stride) = *(src_int + 13);
 735     *(dst_int+14*int_dst_stride) = *(src_int + 14);
 736     *(dst_int+15*int_dst_stride) = *(src_int + 15);
 737 }
 738
 739 /** \brief performs a 6x16 transpose of data in src, and stores it to dst
 740     \todo FIXME: see if we can't spare some vec_lvsl() by them factorizing
 741     out of unaligned_load() */
 742 #define readAndTranspose16x6(src, src_stride, r8, r9, r10, r11, r12, r13) {\
 743     register vec_u8 r0  = unaligned_load(0,             src);            \
 744     register vec_u8 r1  = unaligned_load(   src_stride, src);            \
 745     register vec_u8 r2  = unaligned_load(2* src_stride, src);            \
 746     register vec_u8 r3  = unaligned_load(3* src_stride, src);            \
 747     register vec_u8 r4  = unaligned_load(4* src_stride, src);            \
 748     register vec_u8 r5  = unaligned_load(5* src_stride, src);            \
 749     register vec_u8 r6  = unaligned_load(6* src_stride, src);            \
 750     register vec_u8 r7  = unaligned_load(7* src_stride, src);            \
 751     register vec_u8 r14 = unaligned_load(14*src_stride, src);            \
 752     register vec_u8 r15 = unaligned_load(15*src_stride, src);            \
 753                                                                            \
 754     r8  = unaligned_load( 8*src_stride, src);                              \
 755     r9  = unaligned_load( 9*src_stride, src);                              \
 756     r10 = unaligned_load(10*src_stride, src);                              \
 757     r11 = unaligned_load(11*src_stride, src);                              \
 758     r12 = unaligned_load(12*src_stride, src);                              \
 759     r13 = unaligned_load(13*src_stride, src);                              \
 760                                                                            \
 761     /*Merge first pairs*/                                                  \
 762     r0 = vec_mergeh(r0, r8);    /*0, 8*/                                   \
 763     r1 = vec_mergeh(r1, r9);    /*1, 9*/                                   \
 764     r2 = vec_mergeh(r2, r10);   /*2,10*/                                   \
 765     r3 = vec_mergeh(r3, r11);   /*3,11*/                                   \
 766     r4 = vec_mergeh(r4, r12);   /*4,12*/                                   \
 767     r5 = vec_mergeh(r5, r13);   /*5,13*/                                   \
 768     r6 = vec_mergeh(r6, r14);   /*6,14*/                                   \
 769     r7 = vec_mergeh(r7, r15);   /*7,15*/                                   \
 770                                                                            \
 771     /*Merge second pairs*/                                                 \
 772     r8  = vec_mergeh(r0, r4);   /*0,4, 8,12 set 0*/                        \
 773     r9  = vec_mergel(r0, r4);   /*0,4, 8,12 set 1*/                        \
 774     r10 = vec_mergeh(r1, r5);   /*1,5, 9,13 set 0*/                        \
 775     r11 = vec_mergel(r1, r5);   /*1,5, 9,13 set 1*/                        \
 776     r12 = vec_mergeh(r2, r6);   /*2,6,10,14 set 0*/                        \
 777     r13 = vec_mergel(r2, r6);   /*2,6,10,14 set 1*/                        \
 778     r14 = vec_mergeh(r3, r7);   /*3,7,11,15 set 0*/                        \
 779     r15 = vec_mergel(r3, r7);   /*3,7,11,15 set 1*/                        \
 780                                                                            \
 781     /*Third merge*/                                                        \
 782     r0 = vec_mergeh(r8,  r12);  /*0,2,4,6,8,10,12,14 set 0*/               \
 783     r1 = vec_mergel(r8,  r12);  /*0,2,4,6,8,10,12,14 set 1*/               \
 784     r2 = vec_mergeh(r9,  r13);  /*0,2,4,6,8,10,12,14 set 2*/               \
 785     r4 = vec_mergeh(r10, r14);  /*1,3,5,7,9,11,13,15 set 0*/               \
 786     r5 = vec_mergel(r10, r14);  /*1,3,5,7,9,11,13,15 set 1*/               \
 787     r6 = vec_mergeh(r11, r15);  /*1,3,5,7,9,11,13,15 set 2*/               \
 788     /* Don't need to compute 3 and 7*/                                     \
 789                                                                            \
 790     /*Final merge*/                                                        \
 791     r8  = vec_mergeh(r0, r4);   /*all set 0*/                              \
 792     r9  = vec_mergel(r0, r4);   /*all set 1*/                              \
 793     r10 = vec_mergeh(r1, r5);   /*all set 2*/                              \
 794     r11 = vec_mergel(r1, r5);   /*all set 3*/                              \
 795     r12 = vec_mergeh(r2, r6);   /*all set 4*/                              \
 796     r13 = vec_mergel(r2, r6);   /*all set 5*/                              \
 797     /* Don't need to compute 14 and 15*/                                   \
 798                                                                            \
 799 }
 800
 801 // out: o = |x-y| < a
 802 static inline vec_u8 diff_lt_altivec ( register vec_u8 x,
 803                                          register vec_u8 y,
 804                                          register vec_u8 a) {
 805
 806     register vec_u8 diff = vec_subs(x, y);
 807     register vec_u8 diffneg = vec_subs(y, x);
 808     register vec_u8 o = vec_or(diff, diffneg); /* |x-y| */
 809     o = (vec_u8)vec_cmplt(o, a);
 810     return o;
 811 }
 812
 813 static inline vec_u8 h264_deblock_mask ( register vec_u8 p0,
 814                                            register vec_u8 p1,
 815                                            register vec_u8 q0,
 816                                            register vec_u8 q1,
 817                                            register vec_u8 alpha,
 818                                            register vec_u8 beta) {
 819
 820     register vec_u8 mask;
 821     register vec_u8 tempmask;
 822
 823     mask = diff_lt_altivec(p0, q0, alpha);
 824     tempmask = diff_lt_altivec(p1, p0, beta);
 825     mask = vec_and(mask, tempmask);
 826     tempmask = diff_lt_altivec(q1, q0, beta);
 827     mask = vec_and(mask, tempmask);
 828
 829     return mask;
 830 }
 831
 832 // out: newp1 = clip((p2 + ((p0 + q0 + 1) >> 1)) >> 1, p1-tc0, p1+tc0)
 833 static inline vec_u8 h264_deblock_q1(register vec_u8 p0,
 834                                        register vec_u8 p1,
 835                                        register vec_u8 p2,
 836                                        register vec_u8 q0,
 837                                        register vec_u8 tc0) {
 838
 839     register vec_u8 average = vec_avg(p0, q0);
 840     register vec_u8 temp;
 841     register vec_u8 uncliped;
 842     register vec_u8 ones;
 843     register vec_u8 max;
 844     register vec_u8 min;
 845     register vec_u8 newp1;
 846
 847     temp = vec_xor(average, p2);
 848     average = vec_avg(average, p2);     /*avg(p2, avg(p0, q0)) */
 849     ones = vec_splat_u8(1);
 850     temp = vec_and(temp, ones);         /*(p2^avg(p0, q0)) & 1 */
 851     uncliped = vec_subs(average, temp); /*(p2+((p0+q0+1)>>1))>>1 */
 852     max = vec_adds(p1, tc0);
 853     min = vec_subs(p1, tc0);
 854     newp1 = vec_max(min, uncliped);
 855     newp1 = vec_min(max, newp1);
 856     return newp1;
 857 }
 858
 859 #define h264_deblock_p0_q0(p0, p1, q0, q1, tc0masked) {                                           \
 860                                                                                                   \
 861     const vec_u8 A0v = vec_sl(vec_splat_u8(10), vec_splat_u8(4));                               \
 862                                                                                                   \
 863     register vec_u8 pq0bit = vec_xor(p0,q0);                                                    \
 864     register vec_u8 q1minus;                                                                    \
 865     register vec_u8 p0minus;                                                                    \
 866     register vec_u8 stage1;                                                                     \
 867     register vec_u8 stage2;                                                                     \
 868     register vec_u8 vec160;                                                                     \
 869     register vec_u8 delta;                                                                      \
 870     register vec_u8 deltaneg;                                                                   \
 871                                                                                                   \
 872     q1minus = vec_nor(q1, q1);                 /* 255 - q1 */                                     \
 873     stage1 = vec_avg(p1, q1minus);             /* (p1 - q1 + 256)>>1 */                           \
 874     stage2 = vec_sr(stage1, vec_splat_u8(1));  /* (p1 - q1 + 256)>>2 = 64 + (p1 - q1) >> 2 */     \
 875     p0minus = vec_nor(p0, p0);                 /* 255 - p0 */                                     \
 876     stage1 = vec_avg(q0, p0minus);             /* (q0 - p0 + 256)>>1 */                           \
 877     pq0bit = vec_and(pq0bit, vec_splat_u8(1));                                                    \
 878     stage2 = vec_avg(stage2, pq0bit);          /* 32 + ((q0 - p0)&1 + (p1 - q1) >> 2 + 1) >> 1 */ \
 879     stage2 = vec_adds(stage2, stage1);         /* 160 + ((p0 - q0) + (p1 - q1) >> 2 + 1) >> 1 */  \
 880     vec160 = vec_ld(0, &A0v);                                                                     \
 881     deltaneg = vec_subs(vec160, stage2);       /* -d */                                           \
 882     delta = vec_subs(stage2, vec160);          /* d */                                            \
 883     deltaneg = vec_min(tc0masked, deltaneg);                                                      \
 884     delta = vec_min(tc0masked, delta);                                                            \
 885     p0 = vec_subs(p0, deltaneg);                                                                  \
 886     q0 = vec_subs(q0, delta);                                                                     \
 887     p0 = vec_adds(p0, delta);                                                                     \
 888     q0 = vec_adds(q0, deltaneg);                                                                  \
 889 }
 890
 891 #define h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0) {            \
 892     DECLARE_ALIGNED_16(unsigned char, temp[16]);                                             \
 893     register vec_u8 alphavec;                                                              \
 894     register vec_u8 betavec;                                                               \
 895     register vec_u8 mask;                                                                  \
 896     register vec_u8 p1mask;                                                                \
 897     register vec_u8 q1mask;                                                                \
 898     register vector signed   char tc0vec;                                                    \
 899     register vec_u8 finaltc0;                                                              \
 900     register vec_u8 tc0masked;                                                             \
 901     register vec_u8 newp1;                                                                 \
 902     register vec_u8 newq1;                                                                 \
 903                                                                                              \
 904     temp[0] = alpha;                                                                         \
 905     temp[1] = beta;                                                                          \
 906     alphavec = vec_ld(0, temp);                                                              \
 907     betavec = vec_splat(alphavec, 0x1);                                                      \
 908     alphavec = vec_splat(alphavec, 0x0);                                                     \
 909     mask = h264_deblock_mask(p0, p1, q0, q1, alphavec, betavec); /*if in block */            \
 910                                                                                              \
 911     *((int *)temp) = *((int *)tc0);                                                          \
 912     tc0vec = vec_ld(0, (signed char*)temp);                                                  \
 913     tc0vec = vec_mergeh(tc0vec, tc0vec);                                                     \
 914     tc0vec = vec_mergeh(tc0vec, tc0vec);                                                     \
 915     mask = vec_and(mask, vec_cmpgt(tc0vec, vec_splat_s8(-1)));  /* if tc0[i] >= 0 */         \
 916     finaltc0 = vec_and((vec_u8)tc0vec, mask);     /* tc = tc0 */                           \
 917                                                                                              \
 918     p1mask = diff_lt_altivec(p2, p0, betavec);                                               \
 919     p1mask = vec_and(p1mask, mask);                             /* if ( |p2 - p0| < beta) */ \
 920     tc0masked = vec_and(p1mask, (vec_u8)tc0vec);                                           \
 921     finaltc0 = vec_sub(finaltc0, p1mask);                       /* tc++ */                   \
 922     newp1 = h264_deblock_q1(p0, p1, p2, q0, tc0masked);                                      \
 923     /*end if*/                                                                               \
 924                                                                                              \
 925     q1mask = diff_lt_altivec(q2, q0, betavec);                                               \
 926     q1mask = vec_and(q1mask, mask);                             /* if ( |q2 - q0| < beta ) */\
 927     tc0masked = vec_and(q1mask, (vec_u8)tc0vec);                                           \
 928     finaltc0 = vec_sub(finaltc0, q1mask);                       /* tc++ */                   \
 929     newq1 = h264_deblock_q1(p0, q1, q2, q0, tc0masked);                                      \
 930     /*end if*/                                                                               \
 931                                                                                              \
 932     h264_deblock_p0_q0(p0, p1, q0, q1, finaltc0);                                            \
 933     p1 = newp1;                                                                              \
 934     q1 = newq1;                                                                              \
 935 }
 936
 937 static void h264_v_loop_filter_luma_altivec(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) {
 938
 939     if ((tc0[0] & tc0[1] & tc0[2] & tc0[3]) >= 0) {
 940         register vec_u8 p2 = vec_ld(-3*stride, pix);
 941         register vec_u8 p1 = vec_ld(-2*stride, pix);
 942         register vec_u8 p0 = vec_ld(-1*stride, pix);
 943         register vec_u8 q0 = vec_ld(0, pix);
 944         register vec_u8 q1 = vec_ld(stride, pix);
 945         register vec_u8 q2 = vec_ld(2*stride, pix);
 946         h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0);
 947         vec_st(p1, -2*stride, pix);
 948         vec_st(p0, -1*stride, pix);
 949         vec_st(q0, 0, pix);
 950         vec_st(q1, stride, pix);
 951     }
 952 }
 953
 954 static void h264_h_loop_filter_luma_altivec(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) {
 955
 956     register vec_u8 line0, line1, line2, line3, line4, line5;
 957     if ((tc0[0] & tc0[1] & tc0[2] & tc0[3]) < 0)
 958         return;
 959     readAndTranspose16x6(pix-3, stride, line0, line1, line2, line3, line4, line5);
 960     h264_loop_filter_luma_altivec(line0, line1, line2, line3, line4, line5, alpha, beta, tc0);
 961     transpose4x16(line1, line2, line3, line4);
 962     write16x4(pix-2, stride, line1, line2, line3, line4);
 963 }
 964
 965 static av_always_inline
 966 void weight_h264_WxH_altivec(uint8_t *block, int stride, int log2_denom, int weight, int offset, int w, int h)
 967 {
 968     int y, aligned;
 969     vec_u8 vblock;
 970     vec_s16 vtemp, vweight, voffset, v0, v1;
 971     vec_u16 vlog2_denom;
 972     DECLARE_ALIGNED_16(int32_t, temp[4]);
 973     LOAD_ZERO;
 974
 975     offset <<= log2_denom;
 976     if(log2_denom) offset += 1<<(log2_denom-1);
 977     temp[0] = log2_denom;
 978     temp[1] = weight;
 979     temp[2] = offset;
 980
 981     vtemp = (vec_s16)vec_ld(0, temp);
 982     vlog2_denom = (vec_u16)vec_splat(vtemp, 1);
 983     vweight = vec_splat(vtemp, 3);
 984     voffset = vec_splat(vtemp, 5);
 985     aligned = !((unsigned long)block & 0xf);
 986
 987     for (y=0; y<h; y++) {
 988         vblock = vec_ld(0, block);
 989
 990         v0 = (vec_s16)vec_mergeh(zero_u8v, vblock);
 991         v1 = (vec_s16)vec_mergel(zero_u8v, vblock);
 992
 993         if (w == 16 || aligned) {
 994             v0 = vec_mladd(v0, vweight, zero_s16v);
 995             v0 = vec_adds(v0, voffset);
 996             v0 = vec_sra(v0, vlog2_denom);
 997         }
 998         if (w == 16 || !aligned) {
 999             v1 = vec_mladd(v1, vweight, zero_s16v);
1000             v1 = vec_adds(v1, voffset);
1001             v1 = vec_sra(v1, vlog2_denom);
1002         }
1003         vblock = vec_packsu(v0, v1);
1004         vec_st(vblock, 0, block);
1005
1006         block += stride;
1007     }
1008 }
1009
1010 static av_always_inline
1011 void biweight_h264_WxH_altivec(uint8_t *dst, uint8_t *src, int stride, int log2_denom,
1012                                int weightd, int weights, int offset, int w, int h)
1013 {
1014     int y, dst_aligned, src_aligned;
1015     vec_u8 vsrc, vdst;
1016     vec_s16 vtemp, vweights, vweightd, voffset, v0, v1, v2, v3;
1017     vec_u16 vlog2_denom;
1018     DECLARE_ALIGNED_16(int32_t, temp[4]);
1019     LOAD_ZERO;
1020
1021     offset = ((offset + 1) | 1) << log2_denom;
1022     temp[0] = log2_denom+1;
1023     temp[1] = weights;
1024     temp[2] = weightd;
1025     temp[3] = offset;
1026
1027     vtemp = (vec_s16)vec_ld(0, temp);
1028     vlog2_denom = (vec_u16)vec_splat(vtemp, 1);
1029     vweights = vec_splat(vtemp, 3);
1030     vweightd = vec_splat(vtemp, 5);
1031     voffset = vec_splat(vtemp, 7);
1032     dst_aligned = !((unsigned long)dst & 0xf);
1033     src_aligned = !((unsigned long)src & 0xf);
1034
1035     for (y=0; y<h; y++) {
1036         vdst = vec_ld(0, dst);
1037         vsrc = vec_ld(0, src);
1038
1039         v0 = (vec_s16)vec_mergeh(zero_u8v, vdst);
1040         v1 = (vec_s16)vec_mergel(zero_u8v, vdst);
1041         v2 = (vec_s16)vec_mergeh(zero_u8v, vsrc);
1042         v3 = (vec_s16)vec_mergel(zero_u8v, vsrc);
1043
1044         if (w == 8) {
1045             if (src_aligned)
1046                 v3 = v2;
1047             else
1048                 v2 = v3;
1049         }
1050
1051         if (w == 16 || dst_aligned) {
1052             v0 = vec_mladd(v0, vweightd, zero_s16v);
1053             v2 = vec_mladd(v2, vweights, zero_s16v);
1054
1055             v0 = vec_adds(v0, voffset);
1056             v0 = vec_adds(v0, v2);
1057             v0 = vec_sra(v0, vlog2_denom);
1058         }
1059         if (w == 16 || !dst_aligned) {
1060             v1 = vec_mladd(v1, vweightd, zero_s16v);
1061             v3 = vec_mladd(v3, vweights, zero_s16v);
1062
1063             v1 = vec_adds(v1, voffset);
1064             v1 = vec_adds(v1, v3);
1065             v1 = vec_sra(v1, vlog2_denom);
1066         }
1067         vdst = vec_packsu(v0, v1);
1068         vec_st(vdst, 0, dst);
1069
1070         dst += stride;
1071         src += stride;
1072     }
1073 }
1074
1075 #define H264_WEIGHT(W,H) \
1076 static void ff_weight_h264_pixels ## W ## x ## H ## _altivec(uint8_t *block, int stride, int log2_denom, int weight, int offset){ \
1077     weight_h264_WxH_altivec(block, stride, log2_denom, weight, offset, W, H); \
1078 }\
1079 static void ff_biweight_h264_pixels ## W ## x ## H ## _altivec(uint8_t *dst, uint8_t *src, int stride, int log2_denom, int weightd, int weights, int offset){ \
1080     biweight_h264_WxH_altivec(dst, src, stride, log2_denom, weightd, weights, offset, W, H); \
1081 }
1082
1083 H264_WEIGHT(16,16)
1084 H264_WEIGHT(16, 8)
1085 H264_WEIGHT( 8,16)
1086 H264_WEIGHT( 8, 8)
1087 H264_WEIGHT( 8, 4)
1088
1089 void dsputil_h264_init_ppc(DSPContext* c, AVCodecContext *avctx) {
1090
1091     if (has_altivec()) {
1092         c->put_h264_chroma_pixels_tab[0] = put_h264_chroma_mc8_altivec;
1093         c->put_no_rnd_h264_chroma_pixels_tab[0] = put_no_rnd_h264_chroma_mc8_altivec;
1094         c->avg_h264_chroma_pixels_tab[0] = avg_h264_chroma_mc8_altivec;
1095         c->h264_idct_add = ff_h264_idct_add_altivec;
1096         c->h264_idct_add8 = ff_h264_idct_add8_altivec;
1097         c->h264_idct_add16 = ff_h264_idct_add16_altivec;
1098         c->h264_idct_add16intra = ff_h264_idct_add16intra_altivec;
1099         c->h264_idct_dc_add= h264_idct_dc_add_altivec;
1100         c->h264_idct8_dc_add = ff_h264_idct8_dc_add_altivec;
1101         c->h264_idct8_add = ff_h264_idct8_add_altivec;
1102         c->h264_idct8_add4 = ff_h264_idct8_add4_altivec;
1103         c->h264_v_loop_filter_luma= h264_v_loop_filter_luma_altivec;
1104         c->h264_h_loop_filter_luma= h264_h_loop_filter_luma_altivec;
1105
1106 #define dspfunc(PFX, IDX, NUM) \
1107         c->PFX ## _pixels_tab[IDX][ 0] = PFX ## NUM ## _mc00_altivec; \
1108         c->PFX ## _pixels_tab[IDX][ 1] = PFX ## NUM ## _mc10_altivec; \
1109         c->PFX ## _pixels_tab[IDX][ 2] = PFX ## NUM ## _mc20_altivec; \
1110         c->PFX ## _pixels_tab[IDX][ 3] = PFX ## NUM ## _mc30_altivec; \
1111         c->PFX ## _pixels_tab[IDX][ 4] = PFX ## NUM ## _mc01_altivec; \
1112         c->PFX ## _pixels_tab[IDX][ 5] = PFX ## NUM ## _mc11_altivec; \
1113         c->PFX ## _pixels_tab[IDX][ 6] = PFX ## NUM ## _mc21_altivec; \
1114         c->PFX ## _pixels_tab[IDX][ 7] = PFX ## NUM ## _mc31_altivec; \
1115         c->PFX ## _pixels_tab[IDX][ 8] = PFX ## NUM ## _mc02_altivec; \
1116         c->PFX ## _pixels_tab[IDX][ 9] = PFX ## NUM ## _mc12_altivec; \
1117         c->PFX ## _pixels_tab[IDX][10] = PFX ## NUM ## _mc22_altivec; \
1118         c->PFX ## _pixels_tab[IDX][11] = PFX ## NUM ## _mc32_altivec; \
1119         c->PFX ## _pixels_tab[IDX][12] = PFX ## NUM ## _mc03_altivec; \
1120         c->PFX ## _pixels_tab[IDX][13] = PFX ## NUM ## _mc13_altivec; \
1121         c->PFX ## _pixels_tab[IDX][14] = PFX ## NUM ## _mc23_altivec; \
1122         c->PFX ## _pixels_tab[IDX][15] = PFX ## NUM ## _mc33_altivec
1123
1124         dspfunc(put_h264_qpel, 0, 16);
1125         dspfunc(avg_h264_qpel, 0, 16);
1126 #undef dspfunc
1127
1128         c->weight_h264_pixels_tab[0] = ff_weight_h264_pixels16x16_altivec;
1129         c->weight_h264_pixels_tab[1] = ff_weight_h264_pixels16x8_altivec;
1130         c->weight_h264_pixels_tab[2] = ff_weight_h264_pixels8x16_altivec;
1131         c->weight_h264_pixels_tab[3] = ff_weight_h264_pixels8x8_altivec;
1132         c->weight_h264_pixels_tab[4] = ff_weight_h264_pixels8x4_altivec;
1133         c->biweight_h264_pixels_tab[0] = ff_biweight_h264_pixels16x16_altivec;
1134         c->biweight_h264_pixels_tab[1] = ff_biweight_h264_pixels16x8_altivec;
1135         c->biweight_h264_pixels_tab[2] = ff_biweight_h264_pixels8x16_altivec;
1136         c->biweight_h264_pixels_tab[3] = ff_biweight_h264_pixels8x8_altivec;
1137         c->biweight_h264_pixels_tab[4] = ff_biweight_h264_pixels8x4_altivec;
1138     }
1139 }