gst-libs/ext/ffmpeg/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 #include "libavcodec/h264dsp.h"
  24
  25 #include "dsputil_ppc.h"
  26 #include "dsputil_altivec.h"
  27 #include "util_altivec.h"
  28 #include "types_altivec.h"
  29
  30 #define PUT_OP_U8_ALTIVEC(d, s, dst) d = s
  31 #define AVG_OP_U8_ALTIVEC(d, s, dst) d = vec_avg(dst, s)
  32
  33 #define OP_U8_ALTIVEC                          PUT_OP_U8_ALTIVEC
  34 #define PREFIX_h264_chroma_mc8_altivec         put_h264_chroma_mc8_altivec
  35 #define PREFIX_no_rnd_vc1_chroma_mc8_altivec   put_no_rnd_vc1_chroma_mc8_altivec
  36 #define PREFIX_h264_chroma_mc8_num             altivec_put_h264_chroma_mc8_num
  37 #define PREFIX_h264_qpel16_h_lowpass_altivec   put_h264_qpel16_h_lowpass_altivec
  38 #define PREFIX_h264_qpel16_h_lowpass_num       altivec_put_h264_qpel16_h_lowpass_num
  39 #define PREFIX_h264_qpel16_v_lowpass_altivec   put_h264_qpel16_v_lowpass_altivec
  40 #define PREFIX_h264_qpel16_v_lowpass_num       altivec_put_h264_qpel16_v_lowpass_num
  41 #define PREFIX_h264_qpel16_hv_lowpass_altivec  put_h264_qpel16_hv_lowpass_altivec
  42 #define PREFIX_h264_qpel16_hv_lowpass_num      altivec_put_h264_qpel16_hv_lowpass_num
  43 #include "h264_template_altivec.c"
  44 #undef OP_U8_ALTIVEC
  45 #undef PREFIX_h264_chroma_mc8_altivec
  46 #undef PREFIX_no_rnd_vc1_chroma_mc8_altivec
  47 #undef PREFIX_h264_chroma_mc8_num
  48 #undef PREFIX_h264_qpel16_h_lowpass_altivec
  49 #undef PREFIX_h264_qpel16_h_lowpass_num
  50 #undef PREFIX_h264_qpel16_v_lowpass_altivec
  51 #undef PREFIX_h264_qpel16_v_lowpass_num
  52 #undef PREFIX_h264_qpel16_hv_lowpass_altivec
  53 #undef PREFIX_h264_qpel16_hv_lowpass_num
  54
  55 #define OP_U8_ALTIVEC                          AVG_OP_U8_ALTIVEC
  56 #define PREFIX_h264_chroma_mc8_altivec         avg_h264_chroma_mc8_altivec
  57 #define PREFIX_no_rnd_vc1_chroma_mc8_altivec   avg_no_rnd_vc1_chroma_mc8_altivec
  58 #define PREFIX_h264_chroma_mc8_num             altivec_avg_h264_chroma_mc8_num
  59 #define PREFIX_h264_qpel16_h_lowpass_altivec   avg_h264_qpel16_h_lowpass_altivec
  60 #define PREFIX_h264_qpel16_h_lowpass_num       altivec_avg_h264_qpel16_h_lowpass_num
  61 #define PREFIX_h264_qpel16_v_lowpass_altivec   avg_h264_qpel16_v_lowpass_altivec
  62 #define PREFIX_h264_qpel16_v_lowpass_num       altivec_avg_h264_qpel16_v_lowpass_num
  63 #define PREFIX_h264_qpel16_hv_lowpass_altivec  avg_h264_qpel16_hv_lowpass_altivec
  64 #define PREFIX_h264_qpel16_hv_lowpass_num      altivec_avg_h264_qpel16_hv_lowpass_num
  65 #include "h264_template_altivec.c"
  66 #undef OP_U8_ALTIVEC
  67 #undef PREFIX_h264_chroma_mc8_altivec
  68 #undef PREFIX_no_rnd_vc1_chroma_mc8_altivec
  69 #undef PREFIX_h264_chroma_mc8_num
  70 #undef PREFIX_h264_qpel16_h_lowpass_altivec
  71 #undef PREFIX_h264_qpel16_h_lowpass_num
  72 #undef PREFIX_h264_qpel16_v_lowpass_altivec
  73 #undef PREFIX_h264_qpel16_v_lowpass_num
  74 #undef PREFIX_h264_qpel16_hv_lowpass_altivec
  75 #undef PREFIX_h264_qpel16_hv_lowpass_num
  76
  77 #define H264_MC(OPNAME, SIZE, CODETYPE) \
  78 static void OPNAME ## h264_qpel ## SIZE ## _mc00_ ## CODETYPE (uint8_t *dst, uint8_t *src, int stride){\
  79     OPNAME ## pixels ## SIZE ## _ ## CODETYPE(dst, src, stride, SIZE);\
  80 }\
  81 \
  82 static void OPNAME ## h264_qpel ## SIZE ## _mc10_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){ \
  83     DECLARE_ALIGNED(16, uint8_t, half)[SIZE*SIZE];\
  84     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(half, src, SIZE, stride);\
  85     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, src, half, stride, stride, SIZE);\
  86 }\
  87 \
  88 static void OPNAME ## h264_qpel ## SIZE ## _mc20_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
  89     OPNAME ## h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(dst, src, stride, stride);\
  90 }\
  91 \
  92 static void OPNAME ## h264_qpel ## SIZE ## _mc30_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
  93     DECLARE_ALIGNED(16, uint8_t, half)[SIZE*SIZE];\
  94     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(half, src, SIZE, stride);\
  95     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, src+1, half, stride, stride, SIZE);\
  96 }\
  97 \
  98 static void OPNAME ## h264_qpel ## SIZE ## _mc01_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
  99     DECLARE_ALIGNED(16, uint8_t, half)[SIZE*SIZE];\
 100     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(half, src, SIZE, stride);\
 101     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, src, half, stride, stride, SIZE);\
 102 }\
 103 \
 104 static void OPNAME ## h264_qpel ## SIZE ## _mc02_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 105     OPNAME ## h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(dst, src, stride, stride);\
 106 }\
 107 \
 108 static void OPNAME ## h264_qpel ## SIZE ## _mc03_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 109     DECLARE_ALIGNED(16, uint8_t, half)[SIZE*SIZE];\
 110     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(half, src, SIZE, stride);\
 111     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, src+stride, half, stride, stride, SIZE);\
 112 }\
 113 \
 114 static void OPNAME ## h264_qpel ## SIZE ## _mc11_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 115     DECLARE_ALIGNED(16, uint8_t, halfH)[SIZE*SIZE];\
 116     DECLARE_ALIGNED(16, uint8_t, halfV)[SIZE*SIZE];\
 117     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src, SIZE, stride);\
 118     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src, SIZE, stride);\
 119     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfV, stride, SIZE, SIZE);\
 120 }\
 121 \
 122 static void OPNAME ## h264_qpel ## SIZE ## _mc31_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 123     DECLARE_ALIGNED(16, uint8_t, halfH)[SIZE*SIZE];\
 124     DECLARE_ALIGNED(16, uint8_t, halfV)[SIZE*SIZE];\
 125     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src, SIZE, stride);\
 126     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src+1, SIZE, stride);\
 127     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfV, stride, SIZE, SIZE);\
 128 }\
 129 \
 130 static void OPNAME ## h264_qpel ## SIZE ## _mc13_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 131     DECLARE_ALIGNED(16, uint8_t, halfH)[SIZE*SIZE];\
 132     DECLARE_ALIGNED(16, uint8_t, halfV)[SIZE*SIZE];\
 133     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src + stride, SIZE, stride);\
 134     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src, SIZE, stride);\
 135     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfV, stride, SIZE, SIZE);\
 136 }\
 137 \
 138 static void OPNAME ## h264_qpel ## SIZE ## _mc33_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 139     DECLARE_ALIGNED(16, uint8_t, halfH)[SIZE*SIZE];\
 140     DECLARE_ALIGNED(16, uint8_t, halfV)[SIZE*SIZE];\
 141     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src + stride, SIZE, stride);\
 142     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src+1, SIZE, stride);\
 143     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfV, stride, SIZE, SIZE);\
 144 }\
 145 \
 146 static void OPNAME ## h264_qpel ## SIZE ## _mc22_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 147     DECLARE_ALIGNED(16, int16_t, tmp)[SIZE*(SIZE+8)];\
 148     OPNAME ## h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(dst, tmp, src, stride, SIZE, stride);\
 149 }\
 150 \
 151 static void OPNAME ## h264_qpel ## SIZE ## _mc21_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 152     DECLARE_ALIGNED(16, uint8_t, halfH)[SIZE*SIZE];\
 153     DECLARE_ALIGNED(16, uint8_t, halfHV)[SIZE*SIZE];\
 154     DECLARE_ALIGNED(16, int16_t, tmp)[SIZE*(SIZE+8)];\
 155     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src, SIZE, stride);\
 156     put_h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(halfHV, tmp, src, SIZE, SIZE, stride);\
 157     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfHV, stride, SIZE, SIZE);\
 158 }\
 159 \
 160 static void OPNAME ## h264_qpel ## SIZE ## _mc23_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 161     DECLARE_ALIGNED(16, uint8_t, halfH)[SIZE*SIZE];\
 162     DECLARE_ALIGNED(16, uint8_t, halfHV)[SIZE*SIZE];\
 163     DECLARE_ALIGNED(16, int16_t, tmp)[SIZE*(SIZE+8)];\
 164     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src + stride, SIZE, stride);\
 165     put_h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(halfHV, tmp, src, SIZE, SIZE, stride);\
 166     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfHV, stride, SIZE, SIZE);\
 167 }\
 168 \
 169 static void OPNAME ## h264_qpel ## SIZE ## _mc12_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 170     DECLARE_ALIGNED(16, uint8_t, halfV)[SIZE*SIZE];\
 171     DECLARE_ALIGNED(16, uint8_t, halfHV)[SIZE*SIZE];\
 172     DECLARE_ALIGNED(16, int16_t, tmp)[SIZE*(SIZE+8)];\
 173     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src, SIZE, stride);\
 174     put_h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(halfHV, tmp, src, SIZE, SIZE, stride);\
 175     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfV, halfHV, stride, SIZE, SIZE);\
 176 }\
 177 \
 178 static void OPNAME ## h264_qpel ## SIZE ## _mc32_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\
 179     DECLARE_ALIGNED(16, uint8_t, halfV)[SIZE*SIZE];\
 180     DECLARE_ALIGNED(16, uint8_t, halfHV)[SIZE*SIZE];\
 181     DECLARE_ALIGNED(16, int16_t, tmp)[SIZE*(SIZE+8)];\
 182     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src+1, SIZE, stride);\
 183     put_h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(halfHV, tmp, src, SIZE, SIZE, stride);\
 184     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfV, halfHV, stride, SIZE, SIZE);\
 185 }\
 186
 187 static inline void put_pixels16_l2_altivec( uint8_t * dst, const uint8_t * src1,
 188                                     const uint8_t * src2, int dst_stride,
 189                                     int src_stride1, int h)
 190 {
 191     int i;
 192     vec_u8 a, b, d, tmp1, tmp2, mask, mask_, edges, align;
 193
 194     mask_ = vec_lvsl(0, src2);
 195
 196     for (i = 0; i < h; i++) {
 197
 198         tmp1 = vec_ld(i * src_stride1, src1);
 199         mask = vec_lvsl(i * src_stride1, src1);
 200         tmp2 = vec_ld(i * src_stride1 + 15, src1);
 201
 202         a = vec_perm(tmp1, tmp2, mask);
 203
 204         tmp1 = vec_ld(i * 16, src2);
 205         tmp2 = vec_ld(i * 16 + 15, src2);
 206
 207         b = vec_perm(tmp1, tmp2, mask_);
 208
 209         tmp1 = vec_ld(0, dst);
 210         mask = vec_lvsl(0, dst);
 211         tmp2 = vec_ld(15, dst);
 212
 213         d = vec_avg(a, b);
 214
 215         edges = vec_perm(tmp2, tmp1, mask);
 216
 217         align = vec_lvsr(0, dst);
 218
 219         tmp2 = vec_perm(d, edges, align);
 220         tmp1 = vec_perm(edges, d, align);
 221
 222         vec_st(tmp2, 15, dst);
 223         vec_st(tmp1, 0 , dst);
 224
 225         dst += dst_stride;
 226     }
 227 }
 228
 229 static inline void avg_pixels16_l2_altivec( uint8_t * dst, const uint8_t * src1,
 230                                     const uint8_t * src2, int dst_stride,
 231                                     int src_stride1, int h)
 232 {
 233     int i;
 234     vec_u8 a, b, d, tmp1, tmp2, mask, mask_, edges, align;
 235
 236     mask_ = vec_lvsl(0, src2);
 237
 238     for (i = 0; i < h; i++) {
 239
 240         tmp1 = vec_ld(i * src_stride1, src1);
 241         mask = vec_lvsl(i * src_stride1, src1);
 242         tmp2 = vec_ld(i * src_stride1 + 15, src1);
 243
 244         a = vec_perm(tmp1, tmp2, mask);
 245
 246         tmp1 = vec_ld(i * 16, src2);
 247         tmp2 = vec_ld(i * 16 + 15, src2);
 248
 249         b = vec_perm(tmp1, tmp2, mask_);
 250
 251         tmp1 = vec_ld(0, dst);
 252         mask = vec_lvsl(0, dst);
 253         tmp2 = vec_ld(15, dst);
 254
 255         d = vec_avg(vec_perm(tmp1, tmp2, mask), vec_avg(a, b));
 256
 257         edges = vec_perm(tmp2, tmp1, mask);
 258
 259         align = vec_lvsr(0, dst);
 260
 261         tmp2 = vec_perm(d, edges, align);
 262         tmp1 = vec_perm(edges, d, align);
 263
 264         vec_st(tmp2, 15, dst);
 265         vec_st(tmp1, 0 , dst);
 266
 267         dst += dst_stride;
 268     }
 269 }
 270
 271 /* Implemented but could be faster
 272 #define put_pixels16_l2_altivec(d,s1,s2,ds,s1s,h) put_pixels16_l2(d,s1,s2,ds,s1s,16,h)
 273 #define avg_pixels16_l2_altivec(d,s1,s2,ds,s1s,h) avg_pixels16_l2(d,s1,s2,ds,s1s,16,h)
 274  */
 275
 276 H264_MC(put_, 16, altivec)
 277 H264_MC(avg_, 16, altivec)
 278
 279
 280 /****************************************************************************
 281  * IDCT transform:
 282  ****************************************************************************/
 283
 284 #define VEC_1D_DCT(vb0,vb1,vb2,vb3,va0,va1,va2,va3)               \
 285     /* 1st stage */                                               \
 286     vz0 = vec_add(vb0,vb2);       /* temp[0] = Y[0] + Y[2] */     \
 287     vz1 = vec_sub(vb0,vb2);       /* temp[1] = Y[0] - Y[2] */     \
 288     vz2 = vec_sra(vb1,vec_splat_u16(1));                          \
 289     vz2 = vec_sub(vz2,vb3);       /* temp[2] = Y[1].1/2 - Y[3] */ \
 290     vz3 = vec_sra(vb3,vec_splat_u16(1));                          \
 291     vz3 = vec_add(vb1,vz3);       /* temp[3] = Y[1] + Y[3].1/2 */ \
 292     /* 2nd stage: output */                                       \
 293     va0 = vec_add(vz0,vz3);       /* x[0] = temp[0] + temp[3] */  \
 294     va1 = vec_add(vz1,vz2);       /* x[1] = temp[1] + temp[2] */  \
 295     va2 = vec_sub(vz1,vz2);       /* x[2] = temp[1] - temp[2] */  \
 296     va3 = vec_sub(vz0,vz3)        /* x[3] = temp[0] - temp[3] */
 297
 298 #define VEC_TRANSPOSE_4(a0,a1,a2,a3,b0,b1,b2,b3) \
 299     b0 = vec_mergeh( a0, a0 ); \
 300     b1 = vec_mergeh( a1, a0 ); \
 301     b2 = vec_mergeh( a2, a0 ); \
 302     b3 = vec_mergeh( a3, a0 ); \
 303     a0 = vec_mergeh( b0, b2 ); \
 304     a1 = vec_mergel( b0, b2 ); \
 305     a2 = vec_mergeh( b1, b3 ); \
 306     a3 = vec_mergel( b1, b3 ); \
 307     b0 = vec_mergeh( a0, a2 ); \
 308     b1 = vec_mergel( a0, a2 ); \
 309     b2 = vec_mergeh( a1, a3 ); \
 310     b3 = vec_mergel( a1, a3 )
 311
 312 #define VEC_LOAD_U8_ADD_S16_STORE_U8(va)                      \
 313     vdst_orig = vec_ld(0, dst);                               \
 314     vdst = vec_perm(vdst_orig, zero_u8v, vdst_mask);          \
 315     vdst_ss = (vec_s16) vec_mergeh(zero_u8v, vdst);         \
 316     va = vec_add(va, vdst_ss);                                \
 317     va_u8 = vec_packsu(va, zero_s16v);                        \
 318     va_u32 = vec_splat((vec_u32)va_u8, 0);                  \
 319     vec_ste(va_u32, element, (uint32_t*)dst);
 320
 321 static void ff_h264_idct_add_altivec(uint8_t *dst, DCTELEM *block, int stride)
 322 {
 323     vec_s16 va0, va1, va2, va3;
 324     vec_s16 vz0, vz1, vz2, vz3;
 325     vec_s16 vtmp0, vtmp1, vtmp2, vtmp3;
 326     vec_u8 va_u8;
 327     vec_u32 va_u32;
 328     vec_s16 vdst_ss;
 329     const vec_u16 v6us = vec_splat_u16(6);
 330     vec_u8 vdst, vdst_orig;
 331     vec_u8 vdst_mask = vec_lvsl(0, dst);
 332     int element = ((unsigned long)dst & 0xf) >> 2;
 333     LOAD_ZERO;
 334
 335     block[0] += 32;  /* add 32 as a DC-level for rounding */
 336
 337     vtmp0 = vec_ld(0,block);
 338     vtmp1 = vec_sld(vtmp0, vtmp0, 8);
 339     vtmp2 = vec_ld(16,block);
 340     vtmp3 = vec_sld(vtmp2, vtmp2, 8);
 341
 342     VEC_1D_DCT(vtmp0,vtmp1,vtmp2,vtmp3,va0,va1,va2,va3);
 343     VEC_TRANSPOSE_4(va0,va1,va2,va3,vtmp0,vtmp1,vtmp2,vtmp3);
 344     VEC_1D_DCT(vtmp0,vtmp1,vtmp2,vtmp3,va0,va1,va2,va3);
 345
 346     va0 = vec_sra(va0,v6us);
 347     va1 = vec_sra(va1,v6us);
 348     va2 = vec_sra(va2,v6us);
 349     va3 = vec_sra(va3,v6us);
 350
 351     VEC_LOAD_U8_ADD_S16_STORE_U8(va0);
 352     dst += stride;
 353     VEC_LOAD_U8_ADD_S16_STORE_U8(va1);
 354     dst += stride;
 355     VEC_LOAD_U8_ADD_S16_STORE_U8(va2);
 356     dst += stride;
 357     VEC_LOAD_U8_ADD_S16_STORE_U8(va3);
 358 }
 359
 360 #define IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7,  d0, d1, d2, d3, d4, d5, d6, d7) {\
 361     /*        a0  = SRC(0) + SRC(4); */ \
 362     vec_s16 a0v = vec_add(s0, s4);    \
 363     /*        a2  = SRC(0) - SRC(4); */ \
 364     vec_s16 a2v = vec_sub(s0, s4);    \
 365     /*        a4  =           (SRC(2)>>1) - SRC(6); */ \
 366     vec_s16 a4v = vec_sub(vec_sra(s2, onev), s6);    \
 367     /*        a6  =           (SRC(6)>>1) + SRC(2); */ \
 368     vec_s16 a6v = vec_add(vec_sra(s6, onev), s2);    \
 369     /*        b0  =         a0 + a6; */ \
 370     vec_s16 b0v = vec_add(a0v, a6v);  \
 371     /*        b2  =         a2 + a4; */ \
 372     vec_s16 b2v = vec_add(a2v, a4v);  \
 373     /*        b4  =         a2 - a4; */ \
 374     vec_s16 b4v = vec_sub(a2v, a4v);  \
 375     /*        b6  =         a0 - a6; */ \
 376     vec_s16 b6v = vec_sub(a0v, a6v);  \
 377     /* a1 =  SRC(5) - SRC(3) - SRC(7) - (SRC(7)>>1); */ \
 378     /*        a1 =             (SRC(5)-SRC(3)) -  (SRC(7)  +  (SRC(7)>>1)); */ \
 379     vec_s16 a1v = vec_sub( vec_sub(s5, s3), vec_add(s7, vec_sra(s7, onev)) ); \
 380     /* a3 =  SRC(7) + SRC(1) - SRC(3) - (SRC(3)>>1); */ \
 381     /*        a3 =             (SRC(7)+SRC(1)) -  (SRC(3)  +  (SRC(3)>>1)); */ \
 382     vec_s16 a3v = vec_sub( vec_add(s7, s1), vec_add(s3, vec_sra(s3, onev)) );\
 383     /* a5 =  SRC(7) - SRC(1) + SRC(5) + (SRC(5)>>1); */ \
 384     /*        a5 =             (SRC(7)-SRC(1)) +   SRC(5) +   (SRC(5)>>1); */ \
 385     vec_s16 a5v = vec_add( vec_sub(s7, s1), vec_add(s5, vec_sra(s5, onev)) );\
 386     /*        a7 =                SRC(5)+SRC(3) +  SRC(1) +   (SRC(1)>>1); */ \
 387     vec_s16 a7v = vec_add( vec_add(s5, s3), vec_add(s1, vec_sra(s1, onev)) );\
 388     /*        b1 =                  (a7>>2)  +  a1; */ \
 389     vec_s16 b1v = vec_add( vec_sra(a7v, twov), a1v); \
 390     /*        b3 =          a3 +        (a5>>2); */ \
 391     vec_s16 b3v = vec_add(a3v, vec_sra(a5v, twov)); \
 392     /*        b5 =                  (a3>>2)  -   a5; */ \
 393     vec_s16 b5v = vec_sub( vec_sra(a3v, twov), a5v); \
 394     /*        b7 =           a7 -        (a1>>2); */ \
 395     vec_s16 b7v = vec_sub( a7v, vec_sra(a1v, twov)); \
 396     /* DST(0,    b0 + b7); */ \
 397     d0 = vec_add(b0v, b7v); \
 398     /* DST(1,    b2 + b5); */ \
 399     d1 = vec_add(b2v, b5v); \
 400     /* DST(2,    b4 + b3); */ \
 401     d2 = vec_add(b4v, b3v); \
 402     /* DST(3,    b6 + b1); */ \
 403     d3 = vec_add(b6v, b1v); \
 404     /* DST(4,    b6 - b1); */ \
 405     d4 = vec_sub(b6v, b1v); \
 406     /* DST(5,    b4 - b3); */ \
 407     d5 = vec_sub(b4v, b3v); \
 408     /* DST(6,    b2 - b5); */ \
 409     d6 = vec_sub(b2v, b5v); \
 410     /* DST(7,    b0 - b7); */ \
 411     d7 = vec_sub(b0v, b7v); \
 412 }
 413
 414 #define ALTIVEC_STORE_SUM_CLIP(dest, idctv, perm_ldv, perm_stv, sel) { \
 415     /* unaligned load */                                       \
 416     vec_u8 hv = vec_ld( 0, dest );                           \
 417     vec_u8 lv = vec_ld( 7, dest );                           \
 418     vec_u8 dstv   = vec_perm( hv, lv, (vec_u8)perm_ldv );  \
 419     vec_s16 idct_sh6 = vec_sra(idctv, sixv);                 \
 420     vec_u16 dst16 = (vec_u16)vec_mergeh(zero_u8v, dstv);   \
 421     vec_s16 idstsum = vec_adds(idct_sh6, (vec_s16)dst16);  \
 422     vec_u8 idstsum8 = vec_packsu(zero_s16v, idstsum);        \
 423     vec_u8 edgehv;                                           \
 424     /* unaligned store */                                      \
 425     vec_u8 bodyv  = vec_perm( idstsum8, idstsum8, perm_stv );\
 426     vec_u8 edgelv = vec_perm( sel, zero_u8v, perm_stv );     \
 427     lv    = vec_sel( lv, bodyv, edgelv );                      \
 428     vec_st( lv, 7, dest );                                     \
 429     hv    = vec_ld( 0, dest );                                 \
 430     edgehv = vec_perm( zero_u8v, sel, perm_stv );              \
 431     hv    = vec_sel( hv, bodyv, edgehv );                      \
 432     vec_st( hv, 0, dest );                                     \
 433  }
 434
 435 static void ff_h264_idct8_add_altivec( uint8_t *dst, DCTELEM *dct, int stride ) {
 436     vec_s16 s0, s1, s2, s3, s4, s5, s6, s7;
 437     vec_s16 d0, d1, d2, d3, d4, d5, d6, d7;
 438     vec_s16 idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7;
 439
 440     vec_u8 perm_ldv = vec_lvsl(0, dst);
 441     vec_u8 perm_stv = vec_lvsr(8, dst);
 442
 443     const vec_u16 onev = vec_splat_u16(1);
 444     const vec_u16 twov = vec_splat_u16(2);
 445     const vec_u16 sixv = vec_splat_u16(6);
 446
 447     const vec_u8 sel = (vec_u8) {0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1};
 448     LOAD_ZERO;
 449
 450     dct[0] += 32; // rounding for the >>6 at the end
 451
 452     s0 = vec_ld(0x00, (int16_t*)dct);
 453     s1 = vec_ld(0x10, (int16_t*)dct);
 454     s2 = vec_ld(0x20, (int16_t*)dct);
 455     s3 = vec_ld(0x30, (int16_t*)dct);
 456     s4 = vec_ld(0x40, (int16_t*)dct);
 457     s5 = vec_ld(0x50, (int16_t*)dct);
 458     s6 = vec_ld(0x60, (int16_t*)dct);
 459     s7 = vec_ld(0x70, (int16_t*)dct);
 460
 461     IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7,
 462                      d0, d1, d2, d3, d4, d5, d6, d7);
 463
 464     TRANSPOSE8( d0,  d1,  d2,  d3,  d4,  d5,  d6, d7 );
 465
 466     IDCT8_1D_ALTIVEC(d0,  d1,  d2,  d3,  d4,  d5,  d6, d7,
 467                      idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7);
 468
 469     ALTIVEC_STORE_SUM_CLIP(&dst[0*stride], idct0, perm_ldv, perm_stv, sel);
 470     ALTIVEC_STORE_SUM_CLIP(&dst[1*stride], idct1, perm_ldv, perm_stv, sel);
 471     ALTIVEC_STORE_SUM_CLIP(&dst[2*stride], idct2, perm_ldv, perm_stv, sel);
 472     ALTIVEC_STORE_SUM_CLIP(&dst[3*stride], idct3, perm_ldv, perm_stv, sel);
 473     ALTIVEC_STORE_SUM_CLIP(&dst[4*stride], idct4, perm_ldv, perm_stv, sel);
 474     ALTIVEC_STORE_SUM_CLIP(&dst[5*stride], idct5, perm_ldv, perm_stv, sel);
 475     ALTIVEC_STORE_SUM_CLIP(&dst[6*stride], idct6, perm_ldv, perm_stv, sel);
 476     ALTIVEC_STORE_SUM_CLIP(&dst[7*stride], idct7, perm_ldv, perm_stv, sel);
 477 }
 478
 479 static av_always_inline void h264_idct_dc_add_internal(uint8_t *dst, DCTELEM *block, int stride, int size)
 480 {
 481     vec_s16 dc16;
 482     vec_u8 dcplus, dcminus, v0, v1, v2, v3, aligner;
 483     LOAD_ZERO;
 484     DECLARE_ALIGNED(16, int, dc);
 485     int i;
 486
 487     dc = (block[0] + 32) >> 6;
 488     dc16 = vec_splat((vec_s16) vec_lde(0, &dc), 1);
 489
 490     if (size == 4)
 491         dc16 = vec_sld(dc16, zero_s16v, 8);
 492     dcplus = vec_packsu(dc16, zero_s16v);
 493     dcminus = vec_packsu(vec_sub(zero_s16v, dc16), zero_s16v);
 494
 495     aligner = vec_lvsr(0, dst);
 496     dcplus = vec_perm(dcplus, dcplus, aligner);
 497     dcminus = vec_perm(dcminus, dcminus, aligner);
 498
 499     for (i = 0; i < size; i += 4) {
 500         v0 = vec_ld(0, dst+0*stride);
 501         v1 = vec_ld(0, dst+1*stride);
 502         v2 = vec_ld(0, dst+2*stride);
 503         v3 = vec_ld(0, dst+3*stride);
 504
 505         v0 = vec_adds(v0, dcplus);
 506         v1 = vec_adds(v1, dcplus);
 507         v2 = vec_adds(v2, dcplus);
 508         v3 = vec_adds(v3, dcplus);
 509
 510         v0 = vec_subs(v0, dcminus);
 511         v1 = vec_subs(v1, dcminus);
 512         v2 = vec_subs(v2, dcminus);
 513         v3 = vec_subs(v3, dcminus);
 514
 515         vec_st(v0, 0, dst+0*stride);
 516         vec_st(v1, 0, dst+1*stride);
 517         vec_st(v2, 0, dst+2*stride);
 518         vec_st(v3, 0, dst+3*stride);
 519
 520         dst += 4*stride;
 521     }
 522 }
 523
 524 static void h264_idct_dc_add_altivec(uint8_t *dst, DCTELEM *block, int stride)
 525 {
 526     h264_idct_dc_add_internal(dst, block, stride, 4);
 527 }
 528
 529 static void ff_h264_idct8_dc_add_altivec(uint8_t *dst, DCTELEM *block, int stride)
 530 {
 531     h264_idct_dc_add_internal(dst, block, stride, 8);
 532 }
 533
 534 static void ff_h264_idct_add16_altivec(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){
 535     int i;
 536     for(i=0; i<16; i++){
 537         int nnz = nnzc[ scan8[i] ];
 538         if(nnz){
 539             if(nnz==1 && block[i*16]) h264_idct_dc_add_altivec(dst + block_offset[i], block + i*16, stride);
 540             else                      ff_h264_idct_add_altivec(dst + block_offset[i], block + i*16, stride);
 541         }
 542     }
 543 }
 544
 545 static void ff_h264_idct_add16intra_altivec(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){
 546     int i;
 547     for(i=0; i<16; i++){
 548         if(nnzc[ scan8[i] ]) ff_h264_idct_add_altivec(dst + block_offset[i], block + i*16, stride);
 549         else if(block[i*16]) h264_idct_dc_add_altivec(dst + block_offset[i], block + i*16, stride);
 550     }
 551 }
 552
 553 static void ff_h264_idct8_add4_altivec(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){
 554     int i;
 555     for(i=0; i<16; i+=4){
 556         int nnz = nnzc[ scan8[i] ];
 557         if(nnz){
 558             if(nnz==1 && block[i*16]) ff_h264_idct8_dc_add_altivec(dst + block_offset[i], block + i*16, stride);
 559             else                      ff_h264_idct8_add_altivec   (dst + block_offset[i], block + i*16, stride);
 560         }
 561     }
 562 }
 563
 564 static void ff_h264_idct_add8_altivec(uint8_t **dest, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){
 565     int i;
 566     for(i=16; i<16+8; i++){
 567         if(nnzc[ scan8[i] ])
 568             ff_h264_idct_add_altivec(dest[(i&4)>>2] + block_offset[i], block + i*16, stride);
 569         else if(block[i*16])
 570             h264_idct_dc_add_altivec(dest[(i&4)>>2] + block_offset[i], block + i*16, stride);
 571     }
 572 }
 573
 574 #define transpose4x16(r0, r1, r2, r3) {      \
 575     register vec_u8 r4;                    \
 576     register vec_u8 r5;                    \
 577     register vec_u8 r6;                    \
 578     register vec_u8 r7;                    \
 579                                              \
 580     r4 = vec_mergeh(r0, r2);  /*0, 2 set 0*/ \
 581     r5 = vec_mergel(r0, r2);  /*0, 2 set 1*/ \
 582     r6 = vec_mergeh(r1, r3);  /*1, 3 set 0*/ \
 583     r7 = vec_mergel(r1, r3);  /*1, 3 set 1*/ \
 584                                              \
 585     r0 = vec_mergeh(r4, r6);  /*all set 0*/  \
 586     r1 = vec_mergel(r4, r6);  /*all set 1*/  \
 587     r2 = vec_mergeh(r5, r7);  /*all set 2*/  \
 588     r3 = vec_mergel(r5, r7);  /*all set 3*/  \
 589 }
 590
 591 static inline void write16x4(uint8_t *dst, int dst_stride,
 592                              register vec_u8 r0, register vec_u8 r1,
 593                              register vec_u8 r2, register vec_u8 r3) {
 594     DECLARE_ALIGNED(16, unsigned char, result)[64];
 595     uint32_t *src_int = (uint32_t *)result, *dst_int = (uint32_t *)dst;
 596     int int_dst_stride = dst_stride/4;
 597
 598     vec_st(r0, 0, result);
 599     vec_st(r1, 16, result);
 600     vec_st(r2, 32, result);
 601     vec_st(r3, 48, result);
 602     /* FIXME: there has to be a better way!!!! */
 603     *dst_int = *src_int;
 604     *(dst_int+   int_dst_stride) = *(src_int + 1);
 605     *(dst_int+ 2*int_dst_stride) = *(src_int + 2);
 606     *(dst_int+ 3*int_dst_stride) = *(src_int + 3);
 607     *(dst_int+ 4*int_dst_stride) = *(src_int + 4);
 608     *(dst_int+ 5*int_dst_stride) = *(src_int + 5);
 609     *(dst_int+ 6*int_dst_stride) = *(src_int + 6);
 610     *(dst_int+ 7*int_dst_stride) = *(src_int + 7);
 611     *(dst_int+ 8*int_dst_stride) = *(src_int + 8);
 612     *(dst_int+ 9*int_dst_stride) = *(src_int + 9);
 613     *(dst_int+10*int_dst_stride) = *(src_int + 10);
 614     *(dst_int+11*int_dst_stride) = *(src_int + 11);
 615     *(dst_int+12*int_dst_stride) = *(src_int + 12);
 616     *(dst_int+13*int_dst_stride) = *(src_int + 13);
 617     *(dst_int+14*int_dst_stride) = *(src_int + 14);
 618     *(dst_int+15*int_dst_stride) = *(src_int + 15);
 619 }
 620
 621 /** \brief performs a 6x16 transpose of data in src, and stores it to dst
 622     \todo FIXME: see if we can't spare some vec_lvsl() by them factorizing
 623     out of unaligned_load() */
 624 #define readAndTranspose16x6(src, src_stride, r8, r9, r10, r11, r12, r13) {\
 625     register vec_u8 r0  = unaligned_load(0,             src);            \
 626     register vec_u8 r1  = unaligned_load(   src_stride, src);            \
 627     register vec_u8 r2  = unaligned_load(2* src_stride, src);            \
 628     register vec_u8 r3  = unaligned_load(3* src_stride, src);            \
 629     register vec_u8 r4  = unaligned_load(4* src_stride, src);            \
 630     register vec_u8 r5  = unaligned_load(5* src_stride, src);            \
 631     register vec_u8 r6  = unaligned_load(6* src_stride, src);            \
 632     register vec_u8 r7  = unaligned_load(7* src_stride, src);            \
 633     register vec_u8 r14 = unaligned_load(14*src_stride, src);            \
 634     register vec_u8 r15 = unaligned_load(15*src_stride, src);            \
 635                                                                            \
 636     r8  = unaligned_load( 8*src_stride, src);                              \
 637     r9  = unaligned_load( 9*src_stride, src);                              \
 638     r10 = unaligned_load(10*src_stride, src);                              \
 639     r11 = unaligned_load(11*src_stride, src);                              \
 640     r12 = unaligned_load(12*src_stride, src);                              \
 641     r13 = unaligned_load(13*src_stride, src);                              \
 642                                                                            \
 643     /*Merge first pairs*/                                                  \
 644     r0 = vec_mergeh(r0, r8);    /*0, 8*/                                   \
 645     r1 = vec_mergeh(r1, r9);    /*1, 9*/                                   \
 646     r2 = vec_mergeh(r2, r10);   /*2,10*/                                   \
 647     r3 = vec_mergeh(r3, r11);   /*3,11*/                                   \
 648     r4 = vec_mergeh(r4, r12);   /*4,12*/                                   \
 649     r5 = vec_mergeh(r5, r13);   /*5,13*/                                   \
 650     r6 = vec_mergeh(r6, r14);   /*6,14*/                                   \
 651     r7 = vec_mergeh(r7, r15);   /*7,15*/                                   \
 652                                                                            \
 653     /*Merge second pairs*/                                                 \
 654     r8  = vec_mergeh(r0, r4);   /*0,4, 8,12 set 0*/                        \
 655     r9  = vec_mergel(r0, r4);   /*0,4, 8,12 set 1*/                        \
 656     r10 = vec_mergeh(r1, r5);   /*1,5, 9,13 set 0*/                        \
 657     r11 = vec_mergel(r1, r5);   /*1,5, 9,13 set 1*/                        \
 658     r12 = vec_mergeh(r2, r6);   /*2,6,10,14 set 0*/                        \
 659     r13 = vec_mergel(r2, r6);   /*2,6,10,14 set 1*/                        \
 660     r14 = vec_mergeh(r3, r7);   /*3,7,11,15 set 0*/                        \
 661     r15 = vec_mergel(r3, r7);   /*3,7,11,15 set 1*/                        \
 662                                                                            \
 663     /*Third merge*/                                                        \
 664     r0 = vec_mergeh(r8,  r12);  /*0,2,4,6,8,10,12,14 set 0*/               \
 665     r1 = vec_mergel(r8,  r12);  /*0,2,4,6,8,10,12,14 set 1*/               \
 666     r2 = vec_mergeh(r9,  r13);  /*0,2,4,6,8,10,12,14 set 2*/               \
 667     r4 = vec_mergeh(r10, r14);  /*1,3,5,7,9,11,13,15 set 0*/               \
 668     r5 = vec_mergel(r10, r14);  /*1,3,5,7,9,11,13,15 set 1*/               \
 669     r6 = vec_mergeh(r11, r15);  /*1,3,5,7,9,11,13,15 set 2*/               \
 670     /* Don't need to compute 3 and 7*/                                     \
 671                                                                            \
 672     /*Final merge*/                                                        \
 673     r8  = vec_mergeh(r0, r4);   /*all set 0*/                              \
 674     r9  = vec_mergel(r0, r4);   /*all set 1*/                              \
 675     r10 = vec_mergeh(r1, r5);   /*all set 2*/                              \
 676     r11 = vec_mergel(r1, r5);   /*all set 3*/                              \
 677     r12 = vec_mergeh(r2, r6);   /*all set 4*/                              \
 678     r13 = vec_mergel(r2, r6);   /*all set 5*/                              \
 679     /* Don't need to compute 14 and 15*/                                   \
 680                                                                            \
 681 }
 682
 683 // out: o = |x-y| < a
 684 static inline vec_u8 diff_lt_altivec ( register vec_u8 x,
 685                                          register vec_u8 y,
 686                                          register vec_u8 a) {
 687
 688     register vec_u8 diff = vec_subs(x, y);
 689     register vec_u8 diffneg = vec_subs(y, x);
 690     register vec_u8 o = vec_or(diff, diffneg); /* |x-y| */
 691     o = (vec_u8)vec_cmplt(o, a);
 692     return o;
 693 }
 694
 695 static inline vec_u8 h264_deblock_mask ( register vec_u8 p0,
 696                                            register vec_u8 p1,
 697                                            register vec_u8 q0,
 698                                            register vec_u8 q1,
 699                                            register vec_u8 alpha,
 700                                            register vec_u8 beta) {
 701
 702     register vec_u8 mask;
 703     register vec_u8 tempmask;
 704
 705     mask = diff_lt_altivec(p0, q0, alpha);
 706     tempmask = diff_lt_altivec(p1, p0, beta);
 707     mask = vec_and(mask, tempmask);
 708     tempmask = diff_lt_altivec(q1, q0, beta);
 709     mask = vec_and(mask, tempmask);
 710
 711     return mask;
 712 }
 713
 714 // out: newp1 = clip((p2 + ((p0 + q0 + 1) >> 1)) >> 1, p1-tc0, p1+tc0)
 715 static inline vec_u8 h264_deblock_q1(register vec_u8 p0,
 716                                        register vec_u8 p1,
 717                                        register vec_u8 p2,
 718                                        register vec_u8 q0,
 719                                        register vec_u8 tc0) {
 720
 721     register vec_u8 average = vec_avg(p0, q0);
 722     register vec_u8 temp;
 723     register vec_u8 uncliped;
 724     register vec_u8 ones;
 725     register vec_u8 max;
 726     register vec_u8 min;
 727     register vec_u8 newp1;
 728
 729     temp = vec_xor(average, p2);
 730     average = vec_avg(average, p2);     /*avg(p2, avg(p0, q0)) */
 731     ones = vec_splat_u8(1);
 732     temp = vec_and(temp, ones);         /*(p2^avg(p0, q0)) & 1 */
 733     uncliped = vec_subs(average, temp); /*(p2+((p0+q0+1)>>1))>>1 */
 734     max = vec_adds(p1, tc0);
 735     min = vec_subs(p1, tc0);
 736     newp1 = vec_max(min, uncliped);
 737     newp1 = vec_min(max, newp1);
 738     return newp1;
 739 }
 740
 741 #define h264_deblock_p0_q0(p0, p1, q0, q1, tc0masked) {                                           \
 742                                                                                                   \
 743     const vec_u8 A0v = vec_sl(vec_splat_u8(10), vec_splat_u8(4));                               \
 744                                                                                                   \
 745     register vec_u8 pq0bit = vec_xor(p0,q0);                                                    \
 746     register vec_u8 q1minus;                                                                    \
 747     register vec_u8 p0minus;                                                                    \
 748     register vec_u8 stage1;                                                                     \
 749     register vec_u8 stage2;                                                                     \
 750     register vec_u8 vec160;                                                                     \
 751     register vec_u8 delta;                                                                      \
 752     register vec_u8 deltaneg;                                                                   \
 753                                                                                                   \
 754     q1minus = vec_nor(q1, q1);                 /* 255 - q1 */                                     \
 755     stage1 = vec_avg(p1, q1minus);             /* (p1 - q1 + 256)>>1 */                           \
 756     stage2 = vec_sr(stage1, vec_splat_u8(1));  /* (p1 - q1 + 256)>>2 = 64 + (p1 - q1) >> 2 */     \
 757     p0minus = vec_nor(p0, p0);                 /* 255 - p0 */                                     \
 758     stage1 = vec_avg(q0, p0minus);             /* (q0 - p0 + 256)>>1 */                           \
 759     pq0bit = vec_and(pq0bit, vec_splat_u8(1));                                                    \
 760     stage2 = vec_avg(stage2, pq0bit);          /* 32 + ((q0 - p0)&1 + (p1 - q1) >> 2 + 1) >> 1 */ \
 761     stage2 = vec_adds(stage2, stage1);         /* 160 + ((p0 - q0) + (p1 - q1) >> 2 + 1) >> 1 */  \
 762     vec160 = vec_ld(0, &A0v);                                                                     \
 763     deltaneg = vec_subs(vec160, stage2);       /* -d */                                           \
 764     delta = vec_subs(stage2, vec160);          /* d */                                            \
 765     deltaneg = vec_min(tc0masked, deltaneg);                                                      \
 766     delta = vec_min(tc0masked, delta);                                                            \
 767     p0 = vec_subs(p0, deltaneg);                                                                  \
 768     q0 = vec_subs(q0, delta);                                                                     \
 769     p0 = vec_adds(p0, delta);                                                                     \
 770     q0 = vec_adds(q0, deltaneg);                                                                  \
 771 }
 772
 773 #define h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0) {            \
 774     DECLARE_ALIGNED(16, unsigned char, temp)[16];                                             \
 775     register vec_u8 alphavec;                                                              \
 776     register vec_u8 betavec;                                                               \
 777     register vec_u8 mask;                                                                  \
 778     register vec_u8 p1mask;                                                                \
 779     register vec_u8 q1mask;                                                                \
 780     register vector signed   char tc0vec;                                                    \
 781     register vec_u8 finaltc0;                                                              \
 782     register vec_u8 tc0masked;                                                             \
 783     register vec_u8 newp1;                                                                 \
 784     register vec_u8 newq1;                                                                 \
 785                                                                                              \
 786     temp[0] = alpha;                                                                         \
 787     temp[1] = beta;                                                                          \
 788     alphavec = vec_ld(0, temp);                                                              \
 789     betavec = vec_splat(alphavec, 0x1);                                                      \
 790     alphavec = vec_splat(alphavec, 0x0);                                                     \
 791     mask = h264_deblock_mask(p0, p1, q0, q1, alphavec, betavec); /*if in block */            \
 792                                                                                              \
 793     *((int *)temp) = *((int *)tc0);                                                          \
 794     tc0vec = vec_ld(0, (signed char*)temp);                                                  \
 795     tc0vec = vec_mergeh(tc0vec, tc0vec);                                                     \
 796     tc0vec = vec_mergeh(tc0vec, tc0vec);                                                     \
 797     mask = vec_and(mask, vec_cmpgt(tc0vec, vec_splat_s8(-1)));  /* if tc0[i] >= 0 */         \
 798     finaltc0 = vec_and((vec_u8)tc0vec, mask);     /* tc = tc0 */                           \
 799                                                                                              \
 800     p1mask = diff_lt_altivec(p2, p0, betavec);                                               \
 801     p1mask = vec_and(p1mask, mask);                             /* if ( |p2 - p0| < beta) */ \
 802     tc0masked = vec_and(p1mask, (vec_u8)tc0vec);                                           \
 803     finaltc0 = vec_sub(finaltc0, p1mask);                       /* tc++ */                   \
 804     newp1 = h264_deblock_q1(p0, p1, p2, q0, tc0masked);                                      \
 805     /*end if*/                                                                               \
 806                                                                                              \
 807     q1mask = diff_lt_altivec(q2, q0, betavec);                                               \
 808     q1mask = vec_and(q1mask, mask);                             /* if ( |q2 - q0| < beta ) */\
 809     tc0masked = vec_and(q1mask, (vec_u8)tc0vec);                                           \
 810     finaltc0 = vec_sub(finaltc0, q1mask);                       /* tc++ */                   \
 811     newq1 = h264_deblock_q1(p0, q1, q2, q0, tc0masked);                                      \
 812     /*end if*/                                                                               \
 813                                                                                              \
 814     h264_deblock_p0_q0(p0, p1, q0, q1, finaltc0);                                            \
 815     p1 = newp1;                                                                              \
 816     q1 = newq1;                                                                              \
 817 }
 818
 819 static void h264_v_loop_filter_luma_altivec(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) {
 820
 821     if ((tc0[0] & tc0[1] & tc0[2] & tc0[3]) >= 0) {
 822         register vec_u8 p2 = vec_ld(-3*stride, pix);
 823         register vec_u8 p1 = vec_ld(-2*stride, pix);
 824         register vec_u8 p0 = vec_ld(-1*stride, pix);
 825         register vec_u8 q0 = vec_ld(0, pix);
 826         register vec_u8 q1 = vec_ld(stride, pix);
 827         register vec_u8 q2 = vec_ld(2*stride, pix);
 828         h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0);
 829         vec_st(p1, -2*stride, pix);
 830         vec_st(p0, -1*stride, pix);
 831         vec_st(q0, 0, pix);
 832         vec_st(q1, stride, pix);
 833     }
 834 }
 835
 836 static void h264_h_loop_filter_luma_altivec(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) {
 837
 838     register vec_u8 line0, line1, line2, line3, line4, line5;
 839     if ((tc0[0] & tc0[1] & tc0[2] & tc0[3]) < 0)
 840         return;
 841     readAndTranspose16x6(pix-3, stride, line0, line1, line2, line3, line4, line5);
 842     h264_loop_filter_luma_altivec(line0, line1, line2, line3, line4, line5, alpha, beta, tc0);
 843     transpose4x16(line1, line2, line3, line4);
 844     write16x4(pix-2, stride, line1, line2, line3, line4);
 845 }
 846
 847 static av_always_inline
 848 void weight_h264_WxH_altivec(uint8_t *block, int stride, int log2_denom, int weight, int offset, int w, int h)
 849 {
 850     int y, aligned;
 851     vec_u8 vblock;
 852     vec_s16 vtemp, vweight, voffset, v0, v1;
 853     vec_u16 vlog2_denom;
 854     DECLARE_ALIGNED(16, int32_t, temp)[4];
 855     LOAD_ZERO;
 856
 857     offset <<= log2_denom;
 858     if(log2_denom) offset += 1<<(log2_denom-1);
 859     temp[0] = log2_denom;
 860     temp[1] = weight;
 861     temp[2] = offset;
 862
 863     vtemp = (vec_s16)vec_ld(0, temp);
 864     vlog2_denom = (vec_u16)vec_splat(vtemp, 1);
 865     vweight = vec_splat(vtemp, 3);
 866     voffset = vec_splat(vtemp, 5);
 867     aligned = !((unsigned long)block & 0xf);
 868
 869     for (y=0; y<h; y++) {
 870         vblock = vec_ld(0, block);
 871
 872         v0 = (vec_s16)vec_mergeh(zero_u8v, vblock);
 873         v1 = (vec_s16)vec_mergel(zero_u8v, vblock);
 874
 875         if (w == 16 || aligned) {
 876             v0 = vec_mladd(v0, vweight, zero_s16v);
 877             v0 = vec_adds(v0, voffset);
 878             v0 = vec_sra(v0, vlog2_denom);
 879         }
 880         if (w == 16 || !aligned) {
 881             v1 = vec_mladd(v1, vweight, zero_s16v);
 882             v1 = vec_adds(v1, voffset);
 883             v1 = vec_sra(v1, vlog2_denom);
 884         }
 885         vblock = vec_packsu(v0, v1);
 886         vec_st(vblock, 0, block);
 887
 888         block += stride;
 889     }
 890 }
 891
 892 static av_always_inline
 893 void biweight_h264_WxH_altivec(uint8_t *dst, uint8_t *src, int stride, int log2_denom,
 894                                int weightd, int weights, int offset, int w, int h)
 895 {
 896     int y, dst_aligned, src_aligned;
 897     vec_u8 vsrc, vdst;
 898     vec_s16 vtemp, vweights, vweightd, voffset, v0, v1, v2, v3;
 899     vec_u16 vlog2_denom;
 900     DECLARE_ALIGNED(16, int32_t, temp)[4];
 901     LOAD_ZERO;
 902
 903     offset = ((offset + 1) | 1) << log2_denom;
 904     temp[0] = log2_denom+1;
 905     temp[1] = weights;
 906     temp[2] = weightd;
 907     temp[3] = offset;
 908
 909     vtemp = (vec_s16)vec_ld(0, temp);
 910     vlog2_denom = (vec_u16)vec_splat(vtemp, 1);
 911     vweights = vec_splat(vtemp, 3);
 912     vweightd = vec_splat(vtemp, 5);
 913     voffset = vec_splat(vtemp, 7);
 914     dst_aligned = !((unsigned long)dst & 0xf);
 915     src_aligned = !((unsigned long)src & 0xf);
 916
 917     for (y=0; y<h; y++) {
 918         vdst = vec_ld(0, dst);
 919         vsrc = vec_ld(0, src);
 920
 921         v0 = (vec_s16)vec_mergeh(zero_u8v, vdst);
 922         v1 = (vec_s16)vec_mergel(zero_u8v, vdst);
 923         v2 = (vec_s16)vec_mergeh(zero_u8v, vsrc);
 924         v3 = (vec_s16)vec_mergel(zero_u8v, vsrc);
 925
 926         if (w == 8) {
 927             if (src_aligned)
 928                 v3 = v2;
 929             else
 930                 v2 = v3;
 931         }
 932
 933         if (w == 16 || dst_aligned) {
 934             v0 = vec_mladd(v0, vweightd, zero_s16v);
 935             v2 = vec_mladd(v2, vweights, zero_s16v);
 936
 937             v0 = vec_adds(v0, voffset);
 938             v0 = vec_adds(v0, v2);
 939             v0 = vec_sra(v0, vlog2_denom);
 940         }
 941         if (w == 16 || !dst_aligned) {
 942             v1 = vec_mladd(v1, vweightd, zero_s16v);
 943             v3 = vec_mladd(v3, vweights, zero_s16v);
 944
 945             v1 = vec_adds(v1, voffset);
 946             v1 = vec_adds(v1, v3);
 947             v1 = vec_sra(v1, vlog2_denom);
 948         }
 949         vdst = vec_packsu(v0, v1);
 950         vec_st(vdst, 0, dst);
 951
 952         dst += stride;
 953         src += stride;
 954     }
 955 }
 956
 957 #define H264_WEIGHT(W,H) \
 958 static void ff_weight_h264_pixels ## W ## x ## H ## _altivec(uint8_t *block, int stride, int log2_denom, int weight, int offset){ \
 959     weight_h264_WxH_altivec(block, stride, log2_denom, weight, offset, W, H); \
 960 }\
 961 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){ \
 962     biweight_h264_WxH_altivec(dst, src, stride, log2_denom, weightd, weights, offset, W, H); \
 963 }
 964
 965 H264_WEIGHT(16,16)
 966 H264_WEIGHT(16, 8)
 967 H264_WEIGHT( 8,16)
 968 H264_WEIGHT( 8, 8)
 969 H264_WEIGHT( 8, 4)
 970
 971 void dsputil_h264_init_ppc(DSPContext* c, AVCodecContext *avctx) {
 972
 973     if (has_altivec()) {
 974         c->put_h264_chroma_pixels_tab[0] = put_h264_chroma_mc8_altivec;
 975         c->avg_h264_chroma_pixels_tab[0] = avg_h264_chroma_mc8_altivec;
 976         c->put_no_rnd_vc1_chroma_pixels_tab[0] = put_no_rnd_vc1_chroma_mc8_altivec;
 977         c->avg_no_rnd_vc1_chroma_pixels_tab[0] = avg_no_rnd_vc1_chroma_mc8_altivec;
 978
 979 #define dspfunc(PFX, IDX, NUM) \
 980         c->PFX ## _pixels_tab[IDX][ 0] = PFX ## NUM ## _mc00_altivec; \
 981         c->PFX ## _pixels_tab[IDX][ 1] = PFX ## NUM ## _mc10_altivec; \
 982         c->PFX ## _pixels_tab[IDX][ 2] = PFX ## NUM ## _mc20_altivec; \
 983         c->PFX ## _pixels_tab[IDX][ 3] = PFX ## NUM ## _mc30_altivec; \
 984         c->PFX ## _pixels_tab[IDX][ 4] = PFX ## NUM ## _mc01_altivec; \
 985         c->PFX ## _pixels_tab[IDX][ 5] = PFX ## NUM ## _mc11_altivec; \
 986         c->PFX ## _pixels_tab[IDX][ 6] = PFX ## NUM ## _mc21_altivec; \
 987         c->PFX ## _pixels_tab[IDX][ 7] = PFX ## NUM ## _mc31_altivec; \
 988         c->PFX ## _pixels_tab[IDX][ 8] = PFX ## NUM ## _mc02_altivec; \
 989         c->PFX ## _pixels_tab[IDX][ 9] = PFX ## NUM ## _mc12_altivec; \
 990         c->PFX ## _pixels_tab[IDX][10] = PFX ## NUM ## _mc22_altivec; \
 991         c->PFX ## _pixels_tab[IDX][11] = PFX ## NUM ## _mc32_altivec; \
 992         c->PFX ## _pixels_tab[IDX][12] = PFX ## NUM ## _mc03_altivec; \
 993         c->PFX ## _pixels_tab[IDX][13] = PFX ## NUM ## _mc13_altivec; \
 994         c->PFX ## _pixels_tab[IDX][14] = PFX ## NUM ## _mc23_altivec; \
 995         c->PFX ## _pixels_tab[IDX][15] = PFX ## NUM ## _mc33_altivec
 996
 997         dspfunc(put_h264_qpel, 0, 16);
 998         dspfunc(avg_h264_qpel, 0, 16);
 999 #undef dspfunc
1000     }
1001 }
1002
1003 void ff_h264dsp_init_ppc(H264DSPContext *c)
1004 {
1005     if (has_altivec()) {
1006         c->h264_idct_add = ff_h264_idct_add_altivec;
1007         c->h264_idct_add8 = ff_h264_idct_add8_altivec;
1008         c->h264_idct_add16 = ff_h264_idct_add16_altivec;
1009         c->h264_idct_add16intra = ff_h264_idct_add16intra_altivec;
1010         c->h264_idct_dc_add= h264_idct_dc_add_altivec;
1011         c->h264_idct8_dc_add = ff_h264_idct8_dc_add_altivec;
1012         c->h264_idct8_add = ff_h264_idct8_add_altivec;
1013         c->h264_idct8_add4 = ff_h264_idct8_add4_altivec;
1014         c->h264_v_loop_filter_luma= h264_v_loop_filter_luma_altivec;
1015         c->h264_h_loop_filter_luma= h264_h_loop_filter_luma_altivec;
1016
1017         c->weight_h264_pixels_tab[0] = ff_weight_h264_pixels16x16_altivec;
1018         c->weight_h264_pixels_tab[1] = ff_weight_h264_pixels16x8_altivec;
1019         c->weight_h264_pixels_tab[2] = ff_weight_h264_pixels8x16_altivec;
1020         c->weight_h264_pixels_tab[3] = ff_weight_h264_pixels8x8_altivec;
1021         c->weight_h264_pixels_tab[4] = ff_weight_h264_pixels8x4_altivec;
1022         c->biweight_h264_pixels_tab[0] = ff_biweight_h264_pixels16x16_altivec;
1023         c->biweight_h264_pixels_tab[1] = ff_biweight_h264_pixels16x8_altivec;
1024         c->biweight_h264_pixels_tab[2] = ff_biweight_h264_pixels8x16_altivec;
1025         c->biweight_h264_pixels_tab[3] = ff_biweight_h264_pixels8x8_altivec;
1026         c->biweight_h264_pixels_tab[4] = ff_biweight_h264_pixels8x4_altivec;
1027     }
1028 }