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libpostproc/postprocess_altivec_template.c

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00001 /*
00002  * AltiVec optimizations (C) 2004 Romain Dolbeau <romain@dolbeau.org>
00003  *
00004  * based on code by Copyright (C) 2001-2003 Michael Niedermayer (michaelni@gmx.at)
00005  *
00006  * This file is part of FFmpeg.
00007  *
00008  * FFmpeg is free software; you can redistribute it and/or modify
00009  * it under the terms of the GNU General Public License as published by
00010  * the Free Software Foundation; either version 2 of the License, or
00011  * (at your option) any later version.
00012  *
00013  * FFmpeg is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00016  * GNU General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU General Public License
00019  * along with FFmpeg; if not, write to the Free Software
00020  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00021  */
00022 
00023 #include "libavutil/avutil.h"
00024 
00025 #define ALTIVEC_TRANSPOSE_8x8_SHORT(src_a,src_b,src_c,src_d,src_e,src_f,src_g,src_h) \
00026     do {                                                          \
00027         __typeof__(src_a) tempA1, tempB1, tempC1, tempD1;         \
00028         __typeof__(src_a) tempE1, tempF1, tempG1, tempH1;         \
00029         __typeof__(src_a) tempA2, tempB2, tempC2, tempD2;         \
00030         __typeof__(src_a) tempE2, tempF2, tempG2, tempH2;         \
00031         tempA1 = vec_mergeh (src_a, src_e);                       \
00032         tempB1 = vec_mergel (src_a, src_e);                       \
00033         tempC1 = vec_mergeh (src_b, src_f);                       \
00034         tempD1 = vec_mergel (src_b, src_f);                       \
00035         tempE1 = vec_mergeh (src_c, src_g);                       \
00036         tempF1 = vec_mergel (src_c, src_g);                       \
00037         tempG1 = vec_mergeh (src_d, src_h);                       \
00038         tempH1 = vec_mergel (src_d, src_h);                       \
00039         tempA2 = vec_mergeh (tempA1, tempE1);                     \
00040         tempB2 = vec_mergel (tempA1, tempE1);                     \
00041         tempC2 = vec_mergeh (tempB1, tempF1);                     \
00042         tempD2 = vec_mergel (tempB1, tempF1);                     \
00043         tempE2 = vec_mergeh (tempC1, tempG1);                     \
00044         tempF2 = vec_mergel (tempC1, tempG1);                     \
00045         tempG2 = vec_mergeh (tempD1, tempH1);                     \
00046         tempH2 = vec_mergel (tempD1, tempH1);                     \
00047         src_a = vec_mergeh (tempA2, tempE2);                      \
00048         src_b = vec_mergel (tempA2, tempE2);                      \
00049         src_c = vec_mergeh (tempB2, tempF2);                      \
00050         src_d = vec_mergel (tempB2, tempF2);                      \
00051         src_e = vec_mergeh (tempC2, tempG2);                      \
00052         src_f = vec_mergel (tempC2, tempG2);                      \
00053         src_g = vec_mergeh (tempD2, tempH2);                      \
00054         src_h = vec_mergel (tempD2, tempH2);                      \
00055     } while (0)
00056 
00057 
00058 static inline int vertClassify_altivec(uint8_t src[], int stride, PPContext *c) {
00059     /*
00060     this code makes no assumption on src or stride.
00061     One could remove the recomputation of the perm
00062     vector by assuming (stride % 16) == 0, unfortunately
00063     this is not always true.
00064     */
00065     DECLARE_ALIGNED(16, short, data)[8] =
00066                     {
00067                         ((c->nonBQP*c->ppMode.baseDcDiff)>>8) + 1,
00068                         data[0] * 2 + 1,
00069                         c->QP * 2,
00070                         c->QP * 4
00071                     };
00072     int numEq;
00073     uint8_t *src2 = src;
00074     vector signed short v_dcOffset;
00075     vector signed short v2QP;
00076     vector unsigned short v4QP;
00077     vector unsigned short v_dcThreshold;
00078     const int properStride = (stride % 16);
00079     const int srcAlign = ((unsigned long)src2 % 16);
00080     const int two_vectors = ((srcAlign > 8) || properStride) ? 1 : 0;
00081     const vector signed int zero = vec_splat_s32(0);
00082     const vector signed short mask = vec_splat_s16(1);
00083     vector signed int v_numEq = vec_splat_s32(0);
00084     vector signed short v_data = vec_ld(0, data);
00085     vector signed short v_srcAss0, v_srcAss1, v_srcAss2, v_srcAss3,
00086                         v_srcAss4, v_srcAss5, v_srcAss6, v_srcAss7;
00087 //FIXME avoid this mess if possible
00088     register int j0 = 0,
00089                  j1 = stride,
00090                  j2 = 2 * stride,
00091                  j3 = 3 * stride,
00092                  j4 = 4 * stride,
00093                  j5 = 5 * stride,
00094                  j6 = 6 * stride,
00095                  j7 = 7 * stride;
00096     vector unsigned char v_srcA0, v_srcA1, v_srcA2, v_srcA3,
00097                          v_srcA4, v_srcA5, v_srcA6, v_srcA7;
00098 
00099     v_dcOffset = vec_splat(v_data, 0);
00100     v_dcThreshold = (vector unsigned short)vec_splat(v_data, 1);
00101     v2QP = vec_splat(v_data, 2);
00102     v4QP = (vector unsigned short)vec_splat(v_data, 3);
00103 
00104     src2 += stride * 4;
00105 
00106 #define LOAD_LINE(i)                                                    \
00107     {                                                                   \
00108     vector unsigned char perm##i = vec_lvsl(j##i, src2);                \
00109     vector unsigned char v_srcA2##i;                                    \
00110     vector unsigned char v_srcA1##i = vec_ld(j##i, src2);               \
00111     if (two_vectors)                                                    \
00112         v_srcA2##i = vec_ld(j##i + 16, src2);                           \
00113     v_srcA##i =                                                         \
00114         vec_perm(v_srcA1##i, v_srcA2##i, perm##i);                      \
00115     v_srcAss##i =                                                       \
00116         (vector signed short)vec_mergeh((vector signed char)zero,       \
00117                                         (vector signed char)v_srcA##i); }
00118 
00119 #define LOAD_LINE_ALIGNED(i)                                            \
00120     v_srcA##i = vec_ld(j##i, src2);                                     \
00121     v_srcAss##i =                                                       \
00122         (vector signed short)vec_mergeh((vector signed char)zero,       \
00123                                         (vector signed char)v_srcA##i)
00124 
00125     /* Special-casing the aligned case is worthwhile, as all calls from
00126      * the (transposed) horizontable deblocks will be aligned, in addition
00127      * to the naturally aligned vertical deblocks. */
00128     if (properStride && srcAlign) {
00129         LOAD_LINE_ALIGNED(0);
00130         LOAD_LINE_ALIGNED(1);
00131         LOAD_LINE_ALIGNED(2);
00132         LOAD_LINE_ALIGNED(3);
00133         LOAD_LINE_ALIGNED(4);
00134         LOAD_LINE_ALIGNED(5);
00135         LOAD_LINE_ALIGNED(6);
00136         LOAD_LINE_ALIGNED(7);
00137     } else {
00138         LOAD_LINE(0);
00139         LOAD_LINE(1);
00140         LOAD_LINE(2);
00141         LOAD_LINE(3);
00142         LOAD_LINE(4);
00143         LOAD_LINE(5);
00144         LOAD_LINE(6);
00145         LOAD_LINE(7);
00146     }
00147 #undef LOAD_LINE
00148 #undef LOAD_LINE_ALIGNED
00149 
00150 #define ITER(i, j)                                                      \
00151     const vector signed short v_diff##i =                               \
00152         vec_sub(v_srcAss##i, v_srcAss##j);                              \
00153     const vector signed short v_sum##i =                                \
00154         vec_add(v_diff##i, v_dcOffset);                                 \
00155     const vector signed short v_comp##i =                               \
00156         (vector signed short)vec_cmplt((vector unsigned short)v_sum##i, \
00157                                        v_dcThreshold);                  \
00158     const vector signed short v_part##i = vec_and(mask, v_comp##i);
00159 
00160     {
00161         ITER(0, 1)
00162         ITER(1, 2)
00163         ITER(2, 3)
00164         ITER(3, 4)
00165         ITER(4, 5)
00166         ITER(5, 6)
00167         ITER(6, 7)
00168 
00169         v_numEq = vec_sum4s(v_part0, v_numEq);
00170         v_numEq = vec_sum4s(v_part1, v_numEq);
00171         v_numEq = vec_sum4s(v_part2, v_numEq);
00172         v_numEq = vec_sum4s(v_part3, v_numEq);
00173         v_numEq = vec_sum4s(v_part4, v_numEq);
00174         v_numEq = vec_sum4s(v_part5, v_numEq);
00175         v_numEq = vec_sum4s(v_part6, v_numEq);
00176     }
00177 
00178 #undef ITER
00179 
00180     v_numEq = vec_sums(v_numEq, zero);
00181 
00182     v_numEq = vec_splat(v_numEq, 3);
00183     vec_ste(v_numEq, 0, &numEq);
00184 
00185     if (numEq > c->ppMode.flatnessThreshold){
00186         const vector unsigned char mmoP1 = (const vector unsigned char)
00187             {0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f,
00188              0x00, 0x01, 0x12, 0x13, 0x08, 0x09, 0x1A, 0x1B};
00189         const vector unsigned char mmoP2 = (const vector unsigned char)
00190             {0x04, 0x05, 0x16, 0x17, 0x0C, 0x0D, 0x1E, 0x1F,
00191              0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f};
00192         const vector unsigned char mmoP = (const vector unsigned char)
00193             vec_lvsl(8, (unsigned char*)0);
00194 
00195         vector signed short mmoL1 = vec_perm(v_srcAss0, v_srcAss2, mmoP1);
00196         vector signed short mmoL2 = vec_perm(v_srcAss4, v_srcAss6, mmoP2);
00197         vector signed short mmoL = vec_perm(mmoL1, mmoL2, mmoP);
00198         vector signed short mmoR1 = vec_perm(v_srcAss5, v_srcAss7, mmoP1);
00199         vector signed short mmoR2 = vec_perm(v_srcAss1, v_srcAss3, mmoP2);
00200         vector signed short mmoR = vec_perm(mmoR1, mmoR2, mmoP);
00201         vector signed short mmoDiff = vec_sub(mmoL, mmoR);
00202         vector unsigned short mmoSum = (vector unsigned short)vec_add(mmoDiff, v2QP);
00203 
00204         if (vec_any_gt(mmoSum, v4QP))
00205             return 0;
00206         else
00207             return 1;
00208     }
00209     else return 2;
00210 }
00211 
00212 static inline void doVertLowPass_altivec(uint8_t *src, int stride, PPContext *c) {
00213     /*
00214     this code makes no assumption on src or stride.
00215     One could remove the recomputation of the perm
00216     vector by assuming (stride % 16) == 0, unfortunately
00217     this is not always true. Quite a lot of load/stores
00218     can be removed by assuming proper alignment of
00219     src & stride :-(
00220     */
00221     uint8_t *src2 = src;
00222     const vector signed int zero = vec_splat_s32(0);
00223     const int properStride = (stride % 16);
00224     const int srcAlign = ((unsigned long)src2 % 16);
00225     DECLARE_ALIGNED(16, short, qp)[8] = {c->QP};
00226     vector signed short vqp = vec_ld(0, qp);
00227     vector signed short vb0, vb1, vb2, vb3, vb4, vb5, vb6, vb7, vb8, vb9;
00228     vector unsigned char vbA0, av_uninit(vbA1), av_uninit(vbA2), av_uninit(vbA3), av_uninit(vbA4), av_uninit(vbA5), av_uninit(vbA6), av_uninit(vbA7), av_uninit(vbA8), vbA9;
00229     vector unsigned char vbB0, av_uninit(vbB1), av_uninit(vbB2), av_uninit(vbB3), av_uninit(vbB4), av_uninit(vbB5), av_uninit(vbB6), av_uninit(vbB7), av_uninit(vbB8), vbB9;
00230     vector unsigned char vbT0, vbT1, vbT2, vbT3, vbT4, vbT5, vbT6, vbT7, vbT8, vbT9;
00231     vector unsigned char perml0, perml1, perml2, perml3, perml4,
00232                          perml5, perml6, perml7, perml8, perml9;
00233     register int j0 = 0,
00234                  j1 = stride,
00235                  j2 = 2 * stride,
00236                  j3 = 3 * stride,
00237                  j4 = 4 * stride,
00238                  j5 = 5 * stride,
00239                  j6 = 6 * stride,
00240                  j7 = 7 * stride,
00241                  j8 = 8 * stride,
00242                  j9 = 9 * stride;
00243 
00244     vqp = vec_splat(vqp, 0);
00245 
00246     src2 += stride*3;
00247 
00248 #define LOAD_LINE(i)                                                    \
00249     perml##i = vec_lvsl(i * stride, src2);                              \
00250     vbA##i = vec_ld(i * stride, src2);                                  \
00251     vbB##i = vec_ld(i * stride + 16, src2);                             \
00252     vbT##i = vec_perm(vbA##i, vbB##i, perml##i);                        \
00253     vb##i =                                                             \
00254         (vector signed short)vec_mergeh((vector unsigned char)zero,     \
00255                                         (vector unsigned char)vbT##i)
00256 
00257 #define LOAD_LINE_ALIGNED(i)                                            \
00258     vbT##i = vec_ld(j##i, src2);                                        \
00259     vb##i =                                                             \
00260         (vector signed short)vec_mergeh((vector signed char)zero,       \
00261                                         (vector signed char)vbT##i)
00262 
00263       /* Special-casing the aligned case is worthwhile, as all calls from
00264        * the (transposed) horizontable deblocks will be aligned, in addition
00265        * to the naturally aligned vertical deblocks. */
00266     if (properStride && srcAlign) {
00267           LOAD_LINE_ALIGNED(0);
00268           LOAD_LINE_ALIGNED(1);
00269           LOAD_LINE_ALIGNED(2);
00270           LOAD_LINE_ALIGNED(3);
00271           LOAD_LINE_ALIGNED(4);
00272           LOAD_LINE_ALIGNED(5);
00273           LOAD_LINE_ALIGNED(6);
00274           LOAD_LINE_ALIGNED(7);
00275           LOAD_LINE_ALIGNED(8);
00276           LOAD_LINE_ALIGNED(9);
00277     } else {
00278           LOAD_LINE(0);
00279           LOAD_LINE(1);
00280           LOAD_LINE(2);
00281           LOAD_LINE(3);
00282           LOAD_LINE(4);
00283           LOAD_LINE(5);
00284           LOAD_LINE(6);
00285           LOAD_LINE(7);
00286           LOAD_LINE(8);
00287           LOAD_LINE(9);
00288     }
00289 #undef LOAD_LINE
00290 #undef LOAD_LINE_ALIGNED
00291     {
00292         const vector unsigned short v_2 = vec_splat_u16(2);
00293         const vector unsigned short v_4 = vec_splat_u16(4);
00294 
00295         const vector signed short v_diff01 = vec_sub(vb0, vb1);
00296         const vector unsigned short v_cmp01 =
00297             (const vector unsigned short) vec_cmplt(vec_abs(v_diff01), vqp);
00298         const vector signed short v_first = vec_sel(vb1, vb0, v_cmp01);
00299         const vector signed short v_diff89 = vec_sub(vb8, vb9);
00300         const vector unsigned short v_cmp89 =
00301             (const vector unsigned short) vec_cmplt(vec_abs(v_diff89), vqp);
00302         const vector signed short v_last = vec_sel(vb8, vb9, v_cmp89);
00303 
00304         const vector signed short temp01 = vec_mladd(v_first, (vector signed short)v_4, vb1);
00305         const vector signed short temp02 = vec_add(vb2, vb3);
00306         const vector signed short temp03 = vec_add(temp01, (vector signed short)v_4);
00307         const vector signed short v_sumsB0 = vec_add(temp02, temp03);
00308 
00309         const vector signed short temp11 = vec_sub(v_sumsB0, v_first);
00310         const vector signed short v_sumsB1 = vec_add(temp11, vb4);
00311 
00312         const vector signed short temp21 = vec_sub(v_sumsB1, v_first);
00313         const vector signed short v_sumsB2 = vec_add(temp21, vb5);
00314 
00315         const vector signed short temp31 = vec_sub(v_sumsB2, v_first);
00316         const vector signed short v_sumsB3 = vec_add(temp31, vb6);
00317 
00318         const vector signed short temp41 = vec_sub(v_sumsB3, v_first);
00319         const vector signed short v_sumsB4 = vec_add(temp41, vb7);
00320 
00321         const vector signed short temp51 = vec_sub(v_sumsB4, vb1);
00322         const vector signed short v_sumsB5 = vec_add(temp51, vb8);
00323 
00324         const vector signed short temp61 = vec_sub(v_sumsB5, vb2);
00325         const vector signed short v_sumsB6 = vec_add(temp61, v_last);
00326 
00327         const vector signed short temp71 = vec_sub(v_sumsB6, vb3);
00328         const vector signed short v_sumsB7 = vec_add(temp71, v_last);
00329 
00330         const vector signed short temp81 = vec_sub(v_sumsB7, vb4);
00331         const vector signed short v_sumsB8 = vec_add(temp81, v_last);
00332 
00333         const vector signed short temp91 = vec_sub(v_sumsB8, vb5);
00334         const vector signed short v_sumsB9 = vec_add(temp91, v_last);
00335 
00336     #define COMPUTE_VR(i, j, k)                                             \
00337         const vector signed short temps1##i =                               \
00338             vec_add(v_sumsB##i, v_sumsB##k);                                \
00339         const vector signed short temps2##i =                               \
00340             vec_mladd(vb##j, (vector signed short)v_2, temps1##i);          \
00341         const vector signed short  vr##j = vec_sra(temps2##i, v_4)
00342 
00343         COMPUTE_VR(0, 1, 2);
00344         COMPUTE_VR(1, 2, 3);
00345         COMPUTE_VR(2, 3, 4);
00346         COMPUTE_VR(3, 4, 5);
00347         COMPUTE_VR(4, 5, 6);
00348         COMPUTE_VR(5, 6, 7);
00349         COMPUTE_VR(6, 7, 8);
00350         COMPUTE_VR(7, 8, 9);
00351 
00352         const vector signed char neg1 = vec_splat_s8(-1);
00353         const vector unsigned char permHH = (const vector unsigned char){0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
00354                                                                          0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F};
00355 
00356 #define PACK_AND_STORE(i)                                       \
00357 {   const vector unsigned char perms##i =                       \
00358         vec_lvsr(i * stride, src2);                             \
00359     const vector unsigned char vf##i =                          \
00360         vec_packsu(vr##i, (vector signed short)zero);           \
00361     const vector unsigned char vg##i =                          \
00362         vec_perm(vf##i, vbT##i, permHH);                        \
00363     const vector unsigned char mask##i =                        \
00364         vec_perm((vector unsigned char)zero, (vector unsigned char)neg1, perms##i); \
00365     const vector unsigned char vg2##i =                         \
00366         vec_perm(vg##i, vg##i, perms##i);                       \
00367     const vector unsigned char svA##i =                         \
00368         vec_sel(vbA##i, vg2##i, mask##i);                       \
00369     const vector unsigned char svB##i =                         \
00370         vec_sel(vg2##i, vbB##i, mask##i);                       \
00371     vec_st(svA##i, i * stride, src2);                           \
00372     vec_st(svB##i, i * stride + 16, src2);}
00373 
00374 #define PACK_AND_STORE_ALIGNED(i)                               \
00375 {   const vector unsigned char vf##i =                          \
00376         vec_packsu(vr##i, (vector signed short)zero);           \
00377     const vector unsigned char vg##i =                          \
00378         vec_perm(vf##i, vbT##i, permHH);                        \
00379     vec_st(vg##i, i * stride, src2);}
00380 
00381         /* Special-casing the aligned case is worthwhile, as all calls from
00382          * the (transposed) horizontable deblocks will be aligned, in addition
00383          * to the naturally aligned vertical deblocks. */
00384         if (properStride && srcAlign) {
00385             PACK_AND_STORE_ALIGNED(1)
00386             PACK_AND_STORE_ALIGNED(2)
00387             PACK_AND_STORE_ALIGNED(3)
00388             PACK_AND_STORE_ALIGNED(4)
00389             PACK_AND_STORE_ALIGNED(5)
00390             PACK_AND_STORE_ALIGNED(6)
00391             PACK_AND_STORE_ALIGNED(7)
00392             PACK_AND_STORE_ALIGNED(8)
00393         } else {
00394             PACK_AND_STORE(1)
00395             PACK_AND_STORE(2)
00396             PACK_AND_STORE(3)
00397             PACK_AND_STORE(4)
00398             PACK_AND_STORE(5)
00399             PACK_AND_STORE(6)
00400             PACK_AND_STORE(7)
00401             PACK_AND_STORE(8)
00402         }
00403     #undef PACK_AND_STORE
00404     #undef PACK_AND_STORE_ALIGNED
00405     }
00406 }
00407 
00408 
00409 
00410 static inline void doVertDefFilter_altivec(uint8_t src[], int stride, PPContext *c) {
00411     /*
00412     this code makes no assumption on src or stride.
00413     One could remove the recomputation of the perm
00414     vector by assuming (stride % 16) == 0, unfortunately
00415     this is not always true. Quite a lot of load/stores
00416     can be removed by assuming proper alignment of
00417     src & stride :-(
00418     */
00419     uint8_t *src2 = src + stride*3;
00420     const vector signed int zero = vec_splat_s32(0);
00421     DECLARE_ALIGNED(16, short, qp)[8] = {8*c->QP};
00422     vector signed short vqp = vec_splat(
00423                                 (vector signed short)vec_ld(0, qp), 0);
00424 
00425 #define LOAD_LINE(i)                                                    \
00426     const vector unsigned char perm##i =                                \
00427         vec_lvsl(i * stride, src2);                                     \
00428     const vector unsigned char vbA##i =                                 \
00429         vec_ld(i * stride, src2);                                       \
00430     const vector unsigned char vbB##i =                                 \
00431         vec_ld(i * stride + 16, src2);                                  \
00432     const vector unsigned char vbT##i =                                 \
00433         vec_perm(vbA##i, vbB##i, perm##i);                              \
00434     const vector signed short vb##i =                                   \
00435         (vector signed short)vec_mergeh((vector unsigned char)zero,     \
00436                                         (vector unsigned char)vbT##i)
00437 
00438      LOAD_LINE(1);
00439      LOAD_LINE(2);
00440      LOAD_LINE(3);
00441      LOAD_LINE(4);
00442      LOAD_LINE(5);
00443      LOAD_LINE(6);
00444      LOAD_LINE(7);
00445      LOAD_LINE(8);
00446 #undef LOAD_LINE
00447 
00448      const vector signed short v_1 = vec_splat_s16(1);
00449      const vector signed short v_2 = vec_splat_s16(2);
00450      const vector signed short v_5 = vec_splat_s16(5);
00451      const vector signed short v_32 = vec_sl(v_1,
00452                                              (vector unsigned short)v_5);
00453      /* middle energy */
00454      const vector signed short l3minusl6 = vec_sub(vb3, vb6);
00455      const vector signed short l5minusl4 = vec_sub(vb5, vb4);
00456      const vector signed short twotimes_l3minusl6 = vec_mladd(v_2, l3minusl6, (vector signed short)zero);
00457      const vector signed short mE = vec_mladd(v_5, l5minusl4, twotimes_l3minusl6);
00458      const vector signed short absmE = vec_abs(mE);
00459      /* left & right energy */
00460      const vector signed short l1minusl4 = vec_sub(vb1, vb4);
00461      const vector signed short l3minusl2 = vec_sub(vb3, vb2);
00462      const vector signed short l5minusl8 = vec_sub(vb5, vb8);
00463      const vector signed short l7minusl6 = vec_sub(vb7, vb6);
00464      const vector signed short twotimes_l1minusl4 = vec_mladd(v_2, l1minusl4, (vector signed short)zero);
00465      const vector signed short twotimes_l5minusl8 = vec_mladd(v_2, l5minusl8, (vector signed short)zero);
00466      const vector signed short lE = vec_mladd(v_5, l3minusl2, twotimes_l1minusl4);
00467      const vector signed short rE = vec_mladd(v_5, l7minusl6, twotimes_l5minusl8);
00468      /* d */
00469      const vector signed short ddiff = vec_sub(absmE,
00470                                                vec_min(vec_abs(lE),
00471                                                        vec_abs(rE)));
00472      const vector signed short ddiffclamp = vec_max(ddiff, (vector signed short)zero);
00473      const vector signed short dtimes64 = vec_mladd(v_5, ddiffclamp, v_32);
00474      const vector signed short d = vec_sra(dtimes64, vec_splat_u16(6));
00475      const vector signed short minusd = vec_sub((vector signed short)zero, d);
00476      const vector signed short finald = vec_sel(minusd,
00477                                                 d,
00478                                                 vec_cmpgt(vec_sub((vector signed short)zero, mE),
00479                                                           (vector signed short)zero));
00480      /* q */
00481      const vector signed short qtimes2 = vec_sub(vb4, vb5);
00482      /* for a shift right to behave like /2, we need to add one
00483         to all negative integer */
00484      const vector signed short rounddown = vec_sel((vector signed short)zero,
00485                                                    v_1,
00486                                                    vec_cmplt(qtimes2, (vector signed short)zero));
00487      const vector signed short q = vec_sra(vec_add(qtimes2, rounddown), vec_splat_u16(1));
00488      /* clamp */
00489      const vector signed short dclamp_P1 = vec_max((vector signed short)zero, finald);
00490      const vector signed short dclamp_P = vec_min(dclamp_P1, q);
00491      const vector signed short dclamp_N1 = vec_min((vector signed short)zero, finald);
00492      const vector signed short dclamp_N = vec_max(dclamp_N1, q);
00493 
00494      const vector signed short dclampedfinal = vec_sel(dclamp_N,
00495                                                        dclamp_P,
00496                                                        vec_cmpgt(q, (vector signed short)zero));
00497      const vector signed short dornotd = vec_sel((vector signed short)zero,
00498                                                  dclampedfinal,
00499                                                  vec_cmplt(absmE, vqp));
00500      /* add/subtract to l4 and l5 */
00501      const vector signed short vb4minusd = vec_sub(vb4, dornotd);
00502      const vector signed short vb5plusd  = vec_add(vb5, dornotd);
00503      /* finally, stores */
00504      const vector unsigned char st4 = vec_packsu(vb4minusd, (vector signed short)zero);
00505      const vector unsigned char st5 = vec_packsu(vb5plusd,  (vector signed short)zero);
00506 
00507      const vector signed char neg1 = vec_splat_s8(-1);
00508      const vector unsigned char permHH = (const vector unsigned char){0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
00509                                                                       0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F};
00510 
00511 #define STORE(i)                                                \
00512 {    const vector unsigned char perms##i =                      \
00513          vec_lvsr(i * stride, src2);                            \
00514      const vector unsigned char vg##i =                         \
00515          vec_perm(st##i, vbT##i, permHH);                       \
00516      const vector unsigned char mask##i =                       \
00517          vec_perm((vector unsigned char)zero, (vector unsigned char)neg1, perms##i); \
00518      const vector unsigned char vg2##i =                        \
00519          vec_perm(vg##i, vg##i, perms##i);                      \
00520      const vector unsigned char svA##i =                        \
00521          vec_sel(vbA##i, vg2##i, mask##i);                      \
00522      const vector unsigned char svB##i =                        \
00523          vec_sel(vg2##i, vbB##i, mask##i);                      \
00524      vec_st(svA##i, i * stride, src2);                          \
00525      vec_st(svB##i, i * stride + 16, src2);}
00526 
00527      STORE(4)
00528      STORE(5)
00529 }
00530 
00531 static inline void dering_altivec(uint8_t src[], int stride, PPContext *c) {
00532     /*
00533     this code makes no assumption on src or stride.
00534     One could remove the recomputation of the perm
00535     vector by assuming (stride % 16) == 0, unfortunately
00536     this is not always true. Quite a lot of load/stores
00537     can be removed by assuming proper alignment of
00538     src & stride :-(
00539     */
00540     uint8_t *srcCopy = src;
00541     DECLARE_ALIGNED(16, uint8_t, dt)[16];
00542     const vector signed int zero = vec_splat_s32(0);
00543     vector unsigned char v_dt;
00544     dt[0] = deringThreshold;
00545     v_dt = vec_splat(vec_ld(0, dt), 0);
00546 
00547 #define LOAD_LINE(i)                                                  \
00548     const vector unsigned char perm##i =                              \
00549         vec_lvsl(i * stride, srcCopy);                                \
00550     vector unsigned char sA##i = vec_ld(i * stride, srcCopy);         \
00551     vector unsigned char sB##i = vec_ld(i * stride + 16, srcCopy);    \
00552     vector unsigned char src##i = vec_perm(sA##i, sB##i, perm##i)
00553 
00554     LOAD_LINE(0);
00555     LOAD_LINE(1);
00556     LOAD_LINE(2);
00557     LOAD_LINE(3);
00558     LOAD_LINE(4);
00559     LOAD_LINE(5);
00560     LOAD_LINE(6);
00561     LOAD_LINE(7);
00562     LOAD_LINE(8);
00563     LOAD_LINE(9);
00564 #undef LOAD_LINE
00565 
00566     vector unsigned char v_avg;
00567     {
00568     const vector unsigned char trunc_perm = (vector unsigned char)
00569         {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
00570          0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18};
00571     const vector unsigned char trunc_src12 = vec_perm(src1, src2, trunc_perm);
00572     const vector unsigned char trunc_src34 = vec_perm(src3, src4, trunc_perm);
00573     const vector unsigned char trunc_src56 = vec_perm(src5, src6, trunc_perm);
00574     const vector unsigned char trunc_src78 = vec_perm(src7, src8, trunc_perm);
00575 
00576 #define EXTRACT(op) do {                                                \
00577     const vector unsigned char s##op##_1   = vec_##op(trunc_src12, trunc_src34); \
00578     const vector unsigned char s##op##_2   = vec_##op(trunc_src56, trunc_src78); \
00579     const vector unsigned char s##op##_6   = vec_##op(s##op##_1, s##op##_2);     \
00580     const vector unsigned char s##op##_8h  = vec_mergeh(s##op##_6, s##op##_6);   \
00581     const vector unsigned char s##op##_8l  = vec_mergel(s##op##_6, s##op##_6);   \
00582     const vector unsigned char s##op##_9   = vec_##op(s##op##_8h, s##op##_8l);   \
00583     const vector unsigned char s##op##_9h  = vec_mergeh(s##op##_9, s##op##_9);   \
00584     const vector unsigned char s##op##_9l  = vec_mergel(s##op##_9, s##op##_9);   \
00585     const vector unsigned char s##op##_10  = vec_##op(s##op##_9h, s##op##_9l);   \
00586     const vector unsigned char s##op##_10h = vec_mergeh(s##op##_10, s##op##_10); \
00587     const vector unsigned char s##op##_10l = vec_mergel(s##op##_10, s##op##_10); \
00588     const vector unsigned char s##op##_11  = vec_##op(s##op##_10h, s##op##_10l); \
00589     const vector unsigned char s##op##_11h = vec_mergeh(s##op##_11, s##op##_11); \
00590     const vector unsigned char s##op##_11l = vec_mergel(s##op##_11, s##op##_11); \
00591     v_##op = vec_##op(s##op##_11h, s##op##_11l); } while (0)
00592 
00593     vector unsigned char v_min;
00594     vector unsigned char v_max;
00595     EXTRACT(min);
00596     EXTRACT(max);
00597 #undef EXTRACT
00598 
00599     if (vec_all_lt(vec_sub(v_max, v_min), v_dt))
00600         return;
00601 
00602     v_avg = vec_avg(v_min, v_max);
00603     }
00604 
00605     DECLARE_ALIGNED(16, signed int, S)[8];
00606     {
00607     const vector unsigned short mask1 = (vector unsigned short)
00608                                         {0x0001, 0x0002, 0x0004, 0x0008,
00609                                          0x0010, 0x0020, 0x0040, 0x0080};
00610     const vector unsigned short mask2 = (vector unsigned short)
00611                                         {0x0100, 0x0200, 0x0000, 0x0000,
00612                                          0x0000, 0x0000, 0x0000, 0x0000};
00613 
00614     const vector unsigned int vuint32_16 = vec_sl(vec_splat_u32(1), vec_splat_u32(4));
00615     const vector unsigned int vuint32_1 = vec_splat_u32(1);
00616 
00617 #define COMPARE(i)                                                      \
00618     vector signed int sum##i;                                           \
00619     do {                                                                \
00620         const vector unsigned char cmp##i =                             \
00621             (vector unsigned char)vec_cmpgt(src##i, v_avg);             \
00622         const vector unsigned short cmpHi##i =                          \
00623             (vector unsigned short)vec_mergeh(cmp##i, cmp##i);          \
00624         const vector unsigned short cmpLi##i =                          \
00625             (vector unsigned short)vec_mergel(cmp##i, cmp##i);          \
00626         const vector signed short cmpHf##i =                            \
00627             (vector signed short)vec_and(cmpHi##i, mask1);              \
00628         const vector signed short cmpLf##i =                            \
00629             (vector signed short)vec_and(cmpLi##i, mask2);              \
00630         const vector signed int sump##i = vec_sum4s(cmpHf##i, zero);    \
00631         const vector signed int sumq##i = vec_sum4s(cmpLf##i, sump##i); \
00632         sum##i  = vec_sums(sumq##i, zero); } while (0)
00633 
00634     COMPARE(0);
00635     COMPARE(1);
00636     COMPARE(2);
00637     COMPARE(3);
00638     COMPARE(4);
00639     COMPARE(5);
00640     COMPARE(6);
00641     COMPARE(7);
00642     COMPARE(8);
00643     COMPARE(9);
00644 #undef COMPARE
00645 
00646     vector signed int sumA2;
00647     vector signed int sumB2;
00648     {
00649     const vector signed int sump02 = vec_mergel(sum0, sum2);
00650     const vector signed int sump13 = vec_mergel(sum1, sum3);
00651     const vector signed int sumA = vec_mergel(sump02, sump13);
00652 
00653     const vector signed int sump46 = vec_mergel(sum4, sum6);
00654     const vector signed int sump57 = vec_mergel(sum5, sum7);
00655     const vector signed int sumB = vec_mergel(sump46, sump57);
00656 
00657     const vector signed int sump8A = vec_mergel(sum8, zero);
00658     const vector signed int sump9B = vec_mergel(sum9, zero);
00659     const vector signed int sumC = vec_mergel(sump8A, sump9B);
00660 
00661     const vector signed int tA = vec_sl(vec_nor(zero, sumA), vuint32_16);
00662     const vector signed int tB = vec_sl(vec_nor(zero, sumB), vuint32_16);
00663     const vector signed int tC = vec_sl(vec_nor(zero, sumC), vuint32_16);
00664     const vector signed int t2A = vec_or(sumA, tA);
00665     const vector signed int t2B = vec_or(sumB, tB);
00666     const vector signed int t2C = vec_or(sumC, tC);
00667     const vector signed int t3A = vec_and(vec_sra(t2A, vuint32_1),
00668                                           vec_sl(t2A, vuint32_1));
00669     const vector signed int t3B = vec_and(vec_sra(t2B, vuint32_1),
00670                                           vec_sl(t2B, vuint32_1));
00671     const vector signed int t3C = vec_and(vec_sra(t2C, vuint32_1),
00672                                           vec_sl(t2C, vuint32_1));
00673     const vector signed int yA = vec_and(t2A, t3A);
00674     const vector signed int yB = vec_and(t2B, t3B);
00675     const vector signed int yC = vec_and(t2C, t3C);
00676 
00677     const vector unsigned char strangeperm1 = vec_lvsl(4, (unsigned char*)0);
00678     const vector unsigned char strangeperm2 = vec_lvsl(8, (unsigned char*)0);
00679     const vector signed int sumAd4 = vec_perm(yA, yB, strangeperm1);
00680     const vector signed int sumAd8 = vec_perm(yA, yB, strangeperm2);
00681     const vector signed int sumBd4 = vec_perm(yB, yC, strangeperm1);
00682     const vector signed int sumBd8 = vec_perm(yB, yC, strangeperm2);
00683     const vector signed int sumAp = vec_and(yA,
00684                                             vec_and(sumAd4,sumAd8));
00685     const vector signed int sumBp = vec_and(yB,
00686                                             vec_and(sumBd4,sumBd8));
00687     sumA2 = vec_or(sumAp,
00688                    vec_sra(sumAp,
00689                            vuint32_16));
00690     sumB2  = vec_or(sumBp,
00691                     vec_sra(sumBp,
00692                             vuint32_16));
00693     }
00694     vec_st(sumA2, 0, S);
00695     vec_st(sumB2, 16, S);
00696     }
00697 
00698     /* I'm not sure the following is actually faster
00699        than straight, unvectorized C code :-( */
00700 
00701     DECLARE_ALIGNED(16, int, tQP2)[4];
00702     tQP2[0]= c->QP/2 + 1;
00703     vector signed int vQP2 = vec_ld(0, tQP2);
00704     vQP2 = vec_splat(vQP2, 0);
00705     const vector signed int vsint32_8 = vec_splat_s32(8);
00706     const vector unsigned int vuint32_4 = vec_splat_u32(4);
00707 
00708     const vector unsigned char permA1 = (vector unsigned char)
00709         {0x00, 0x01, 0x02, 0x10, 0x11, 0x12, 0x1F, 0x1F,
00710          0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F};
00711     const vector unsigned char permA2 = (vector unsigned char)
00712         {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x10, 0x11,
00713          0x12, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F};
00714     const vector unsigned char permA1inc = (vector unsigned char)
00715         {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
00716          0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
00717     const vector unsigned char permA2inc = (vector unsigned char)
00718         {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
00719          0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
00720     const vector unsigned char magic = (vector unsigned char)
00721         {0x01, 0x02, 0x01, 0x02, 0x04, 0x02, 0x01, 0x02,
00722          0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
00723     const vector unsigned char extractPerm = (vector unsigned char)
00724         {0x10, 0x10, 0x10, 0x01, 0x10, 0x10, 0x10, 0x01,
00725          0x10, 0x10, 0x10, 0x01, 0x10, 0x10, 0x10, 0x01};
00726     const vector unsigned char extractPermInc = (vector unsigned char)
00727         {0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01,
00728          0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01};
00729     const vector unsigned char identity = vec_lvsl(0,(unsigned char *)0);
00730     const vector unsigned char tenRight = (vector unsigned char)
00731         {0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
00732          0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
00733     const vector unsigned char eightLeft = (vector unsigned char)
00734         {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
00735          0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08};
00736 
00737 
00738 #define F_INIT(i)                                       \
00739     vector unsigned char tenRightM##i = tenRight;       \
00740     vector unsigned char permA1M##i = permA1;           \
00741     vector unsigned char permA2M##i = permA2;           \
00742     vector unsigned char extractPermM##i = extractPerm
00743 
00744 #define F2(i, j, k, l)                                                  \
00745     if (S[i] & (1 << (l+1))) {                                          \
00746         const vector unsigned char a_##j##_A##l =                       \
00747             vec_perm(src##i, src##j, permA1M##i);                       \
00748         const vector unsigned char a_##j##_B##l =                       \
00749             vec_perm(a_##j##_A##l, src##k, permA2M##i);                 \
00750         const vector signed int a_##j##_sump##l =                       \
00751             (vector signed int)vec_msum(a_##j##_B##l, magic,            \
00752                                         (vector unsigned int)zero);     \
00753         vector signed int F_##j##_##l =                                 \
00754             vec_sr(vec_sums(a_##j##_sump##l, vsint32_8), vuint32_4);    \
00755         F_##j##_##l = vec_splat(F_##j##_##l, 3);                        \
00756         const vector signed int p_##j##_##l =                           \
00757             (vector signed int)vec_perm(src##j,                         \
00758                                         (vector unsigned char)zero,     \
00759                                         extractPermM##i);               \
00760         const vector signed int sum_##j##_##l  = vec_add( p_##j##_##l, vQP2);\
00761         const vector signed int diff_##j##_##l = vec_sub( p_##j##_##l, vQP2);\
00762         vector signed int newpm_##j##_##l;                              \
00763         if (vec_all_lt(sum_##j##_##l, F_##j##_##l))                     \
00764             newpm_##j##_##l = sum_##j##_##l;                            \
00765         else if (vec_all_gt(diff_##j##_##l, F_##j##_##l))               \
00766             newpm_##j##_##l = diff_##j##_##l;                           \
00767         else newpm_##j##_##l = F_##j##_##l;                             \
00768         const vector unsigned char newpm2_##j##_##l =                   \
00769             vec_splat((vector unsigned char)newpm_##j##_##l, 15);       \
00770         const vector unsigned char mask##j##l = vec_add(identity,       \
00771                                                         tenRightM##i);  \
00772         src##j = vec_perm(src##j, newpm2_##j##_##l, mask##j##l);        \
00773     }                                                                   \
00774     permA1M##i = vec_add(permA1M##i, permA1inc);                        \
00775     permA2M##i = vec_add(permA2M##i, permA2inc);                        \
00776     tenRightM##i = vec_sro(tenRightM##i, eightLeft);                    \
00777     extractPermM##i = vec_add(extractPermM##i, extractPermInc)
00778 
00779 #define ITER(i, j, k)                           \
00780     F_INIT(i);                                  \
00781     F2(i, j, k, 0);                             \
00782     F2(i, j, k, 1);                             \
00783     F2(i, j, k, 2);                             \
00784     F2(i, j, k, 3);                             \
00785     F2(i, j, k, 4);                             \
00786     F2(i, j, k, 5);                             \
00787     F2(i, j, k, 6);                             \
00788     F2(i, j, k, 7)
00789 
00790     ITER(0, 1, 2);
00791     ITER(1, 2, 3);
00792     ITER(2, 3, 4);
00793     ITER(3, 4, 5);
00794     ITER(4, 5, 6);
00795     ITER(5, 6, 7);
00796     ITER(6, 7, 8);
00797     ITER(7, 8, 9);
00798 
00799     const vector signed char neg1 = vec_splat_s8(-1);
00800 
00801 #define STORE_LINE(i)                                   \
00802     const vector unsigned char permST##i =              \
00803         vec_lvsr(i * stride, srcCopy);                  \
00804     const vector unsigned char maskST##i =              \
00805         vec_perm((vector unsigned char)zero,            \
00806                  (vector unsigned char)neg1, permST##i);\
00807     src##i = vec_perm(src##i ,src##i, permST##i);       \
00808     sA##i= vec_sel(sA##i, src##i, maskST##i);           \
00809     sB##i= vec_sel(src##i, sB##i, maskST##i);           \
00810     vec_st(sA##i, i * stride, srcCopy);                 \
00811     vec_st(sB##i, i * stride + 16, srcCopy)
00812 
00813     STORE_LINE(1);
00814     STORE_LINE(2);
00815     STORE_LINE(3);
00816     STORE_LINE(4);
00817     STORE_LINE(5);
00818     STORE_LINE(6);
00819     STORE_LINE(7);
00820     STORE_LINE(8);
00821 
00822 #undef STORE_LINE
00823 #undef ITER
00824 #undef F2
00825 }
00826 
00827 #define doHorizLowPass_altivec(a...) doHorizLowPass_C(a)
00828 #define doHorizDefFilter_altivec(a...) doHorizDefFilter_C(a)
00829 #define do_a_deblock_altivec(a...) do_a_deblock_C(a)
00830 
00831 static inline void RENAME(tempNoiseReducer)(uint8_t *src, int stride,
00832                                             uint8_t *tempBlurred, uint32_t *tempBlurredPast, int *maxNoise)
00833 {
00834     const vector signed int zero = vec_splat_s32(0);
00835     const vector signed short vsint16_1 = vec_splat_s16(1);
00836     vector signed int v_dp = zero;
00837     vector signed int v_sysdp = zero;
00838     int d, sysd, i;
00839 
00840     tempBlurredPast[127]= maxNoise[0];
00841     tempBlurredPast[128]= maxNoise[1];
00842     tempBlurredPast[129]= maxNoise[2];
00843 
00844 #define LOAD_LINE(src, i)                                               \
00845     register int j##src##i = i * stride;                                \
00846     vector unsigned char perm##src##i = vec_lvsl(j##src##i, src);       \
00847     const vector unsigned char v_##src##A1##i = vec_ld(j##src##i, src); \
00848     const vector unsigned char v_##src##A2##i = vec_ld(j##src##i + 16, src); \
00849     const vector unsigned char v_##src##A##i =                          \
00850         vec_perm(v_##src##A1##i, v_##src##A2##i, perm##src##i);         \
00851     vector signed short v_##src##Ass##i =                               \
00852         (vector signed short)vec_mergeh((vector signed char)zero,       \
00853                                         (vector signed char)v_##src##A##i)
00854 
00855     LOAD_LINE(src, 0);
00856     LOAD_LINE(src, 1);
00857     LOAD_LINE(src, 2);
00858     LOAD_LINE(src, 3);
00859     LOAD_LINE(src, 4);
00860     LOAD_LINE(src, 5);
00861     LOAD_LINE(src, 6);
00862     LOAD_LINE(src, 7);
00863 
00864     LOAD_LINE(tempBlurred, 0);
00865     LOAD_LINE(tempBlurred, 1);
00866     LOAD_LINE(tempBlurred, 2);
00867     LOAD_LINE(tempBlurred, 3);
00868     LOAD_LINE(tempBlurred, 4);
00869     LOAD_LINE(tempBlurred, 5);
00870     LOAD_LINE(tempBlurred, 6);
00871     LOAD_LINE(tempBlurred, 7);
00872 #undef LOAD_LINE
00873 
00874 #define ACCUMULATE_DIFFS(i)                                     \
00875     vector signed short v_d##i = vec_sub(v_tempBlurredAss##i,   \
00876                                          v_srcAss##i);          \
00877     v_dp = vec_msums(v_d##i, v_d##i, v_dp);                     \
00878     v_sysdp = vec_msums(v_d##i, vsint16_1, v_sysdp)
00879 
00880     ACCUMULATE_DIFFS(0);
00881     ACCUMULATE_DIFFS(1);
00882     ACCUMULATE_DIFFS(2);
00883     ACCUMULATE_DIFFS(3);
00884     ACCUMULATE_DIFFS(4);
00885     ACCUMULATE_DIFFS(5);
00886     ACCUMULATE_DIFFS(6);
00887     ACCUMULATE_DIFFS(7);
00888 #undef ACCUMULATE_DIFFS
00889 
00890     v_dp = vec_sums(v_dp, zero);
00891     v_sysdp = vec_sums(v_sysdp, zero);
00892 
00893     v_dp = vec_splat(v_dp, 3);
00894     v_sysdp = vec_splat(v_sysdp, 3);
00895 
00896     vec_ste(v_dp, 0, &d);
00897     vec_ste(v_sysdp, 0, &sysd);
00898 
00899     i = d;
00900     d = (4*d
00901          +(*(tempBlurredPast-256))
00902          +(*(tempBlurredPast-1))+ (*(tempBlurredPast+1))
00903          +(*(tempBlurredPast+256))
00904          +4)>>3;
00905 
00906     *tempBlurredPast=i;
00907 
00908     if (d > maxNoise[1]) {
00909         if (d < maxNoise[2]) {
00910 #define OP(i) v_tempBlurredAss##i = vec_avg(v_tempBlurredAss##i, v_srcAss##i);
00911 
00912             OP(0);
00913             OP(1);
00914             OP(2);
00915             OP(3);
00916             OP(4);
00917             OP(5);
00918             OP(6);
00919             OP(7);
00920 #undef OP
00921         } else {
00922 #define OP(i) v_tempBlurredAss##i = v_srcAss##i;
00923 
00924             OP(0);
00925             OP(1);
00926             OP(2);
00927             OP(3);
00928             OP(4);
00929             OP(5);
00930             OP(6);
00931             OP(7);
00932 #undef OP
00933         }
00934     } else {
00935         if (d < maxNoise[0]) {
00936             const vector signed short vsint16_7 = vec_splat_s16(7);
00937             const vector signed short vsint16_4 = vec_splat_s16(4);
00938             const vector unsigned short vuint16_3 = vec_splat_u16(3);
00939 
00940 #define OP(i)                                                   \
00941             const vector signed short v_temp##i =               \
00942                 vec_mladd(v_tempBlurredAss##i,                  \
00943                           vsint16_7, v_srcAss##i);              \
00944             const vector signed short v_temp2##i =              \
00945                 vec_add(v_temp##i, vsint16_4);                  \
00946             v_tempBlurredAss##i = vec_sr(v_temp2##i, vuint16_3)
00947 
00948             OP(0);
00949             OP(1);
00950             OP(2);
00951             OP(3);
00952             OP(4);
00953             OP(5);
00954             OP(6);
00955             OP(7);
00956 #undef OP
00957         } else {
00958             const vector signed short vsint16_3 = vec_splat_s16(3);
00959             const vector signed short vsint16_2 = vec_splat_s16(2);
00960 
00961 #define OP(i)                                                   \
00962             const vector signed short v_temp##i =               \
00963                 vec_mladd(v_tempBlurredAss##i,                  \
00964                           vsint16_3, v_srcAss##i);              \
00965             const vector signed short v_temp2##i =              \
00966                 vec_add(v_temp##i, vsint16_2);                  \
00967             v_tempBlurredAss##i = vec_sr(v_temp2##i, (vector unsigned short)vsint16_2)
00968 
00969             OP(0);
00970             OP(1);
00971             OP(2);
00972             OP(3);
00973             OP(4);
00974             OP(5);
00975             OP(6);
00976             OP(7);
00977 #undef OP
00978         }
00979     }
00980 
00981     const vector signed char neg1 = vec_splat_s8(-1);
00982     const vector unsigned char permHH = (const vector unsigned char){0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
00983                                                                      0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F};
00984 
00985 #define PACK_AND_STORE(src, i)                                  \
00986     const vector unsigned char perms##src##i =                  \
00987         vec_lvsr(i * stride, src);                              \
00988     const vector unsigned char vf##src##i =                     \
00989         vec_packsu(v_tempBlurredAss##i, (vector signed short)zero); \
00990     const vector unsigned char vg##src##i =                     \
00991         vec_perm(vf##src##i, v_##src##A##i, permHH);            \
00992     const vector unsigned char mask##src##i =                   \
00993         vec_perm((vector unsigned char)zero, (vector unsigned char)neg1, perms##src##i); \
00994     const vector unsigned char vg2##src##i =                    \
00995         vec_perm(vg##src##i, vg##src##i, perms##src##i);        \
00996     const vector unsigned char svA##src##i =                    \
00997         vec_sel(v_##src##A1##i, vg2##src##i, mask##src##i);     \
00998     const vector unsigned char svB##src##i =                    \
00999         vec_sel(vg2##src##i, v_##src##A2##i, mask##src##i);     \
01000     vec_st(svA##src##i, i * stride, src);                       \
01001     vec_st(svB##src##i, i * stride + 16, src)
01002 
01003     PACK_AND_STORE(src, 0);
01004     PACK_AND_STORE(src, 1);
01005     PACK_AND_STORE(src, 2);
01006     PACK_AND_STORE(src, 3);
01007     PACK_AND_STORE(src, 4);
01008     PACK_AND_STORE(src, 5);
01009     PACK_AND_STORE(src, 6);
01010     PACK_AND_STORE(src, 7);
01011     PACK_AND_STORE(tempBlurred, 0);
01012     PACK_AND_STORE(tempBlurred, 1);
01013     PACK_AND_STORE(tempBlurred, 2);
01014     PACK_AND_STORE(tempBlurred, 3);
01015     PACK_AND_STORE(tempBlurred, 4);
01016     PACK_AND_STORE(tempBlurred, 5);
01017     PACK_AND_STORE(tempBlurred, 6);
01018     PACK_AND_STORE(tempBlurred, 7);
01019 #undef PACK_AND_STORE
01020 }
01021 
01022 static inline void transpose_16x8_char_toPackedAlign_altivec(unsigned char* dst, unsigned char* src, int stride) {
01023     const vector unsigned char zero = vec_splat_u8(0);
01024 
01025 #define LOAD_DOUBLE_LINE(i, j)                                          \
01026     vector unsigned char perm1##i = vec_lvsl(i * stride, src);          \
01027     vector unsigned char perm2##i = vec_lvsl(j * stride, src);          \
01028     vector unsigned char srcA##i = vec_ld(i * stride, src);             \
01029     vector unsigned char srcB##i = vec_ld(i * stride + 16, src);        \
01030     vector unsigned char srcC##i = vec_ld(j * stride, src);             \
01031     vector unsigned char srcD##i = vec_ld(j * stride+ 16, src);         \
01032     vector unsigned char src##i = vec_perm(srcA##i, srcB##i, perm1##i); \
01033     vector unsigned char src##j = vec_perm(srcC##i, srcD##i, perm2##i)
01034 
01035     LOAD_DOUBLE_LINE(0, 1);
01036     LOAD_DOUBLE_LINE(2, 3);
01037     LOAD_DOUBLE_LINE(4, 5);
01038     LOAD_DOUBLE_LINE(6, 7);
01039 #undef LOAD_DOUBLE_LINE
01040 
01041     vector unsigned char tempA = vec_mergeh(src0, zero);
01042     vector unsigned char tempB = vec_mergel(src0, zero);
01043     vector unsigned char tempC = vec_mergeh(src1, zero);
01044     vector unsigned char tempD = vec_mergel(src1, zero);
01045     vector unsigned char tempE = vec_mergeh(src2, zero);
01046     vector unsigned char tempF = vec_mergel(src2, zero);
01047     vector unsigned char tempG = vec_mergeh(src3, zero);
01048     vector unsigned char tempH = vec_mergel(src3, zero);
01049     vector unsigned char tempI = vec_mergeh(src4, zero);
01050     vector unsigned char tempJ = vec_mergel(src4, zero);
01051     vector unsigned char tempK = vec_mergeh(src5, zero);
01052     vector unsigned char tempL = vec_mergel(src5, zero);
01053     vector unsigned char tempM = vec_mergeh(src6, zero);
01054     vector unsigned char tempN = vec_mergel(src6, zero);
01055     vector unsigned char tempO = vec_mergeh(src7, zero);
01056     vector unsigned char tempP = vec_mergel(src7, zero);
01057 
01058     vector unsigned char temp0  = vec_mergeh(tempA, tempI);
01059     vector unsigned char temp1  = vec_mergel(tempA, tempI);
01060     vector unsigned char temp2  = vec_mergeh(tempB, tempJ);
01061     vector unsigned char temp3  = vec_mergel(tempB, tempJ);
01062     vector unsigned char temp4  = vec_mergeh(tempC, tempK);
01063     vector unsigned char temp5  = vec_mergel(tempC, tempK);
01064     vector unsigned char temp6  = vec_mergeh(tempD, tempL);
01065     vector unsigned char temp7  = vec_mergel(tempD, tempL);
01066     vector unsigned char temp8  = vec_mergeh(tempE, tempM);
01067     vector unsigned char temp9  = vec_mergel(tempE, tempM);
01068     vector unsigned char temp10 = vec_mergeh(tempF, tempN);
01069     vector unsigned char temp11 = vec_mergel(tempF, tempN);
01070     vector unsigned char temp12 = vec_mergeh(tempG, tempO);
01071     vector unsigned char temp13 = vec_mergel(tempG, tempO);
01072     vector unsigned char temp14 = vec_mergeh(tempH, tempP);
01073     vector unsigned char temp15 = vec_mergel(tempH, tempP);
01074 
01075     tempA = vec_mergeh(temp0, temp8);
01076     tempB = vec_mergel(temp0, temp8);
01077     tempC = vec_mergeh(temp1, temp9);
01078     tempD = vec_mergel(temp1, temp9);
01079     tempE = vec_mergeh(temp2, temp10);
01080     tempF = vec_mergel(temp2, temp10);
01081     tempG = vec_mergeh(temp3, temp11);
01082     tempH = vec_mergel(temp3, temp11);
01083     tempI = vec_mergeh(temp4, temp12);
01084     tempJ = vec_mergel(temp4, temp12);
01085     tempK = vec_mergeh(temp5, temp13);
01086     tempL = vec_mergel(temp5, temp13);
01087     tempM = vec_mergeh(temp6, temp14);
01088     tempN = vec_mergel(temp6, temp14);
01089     tempO = vec_mergeh(temp7, temp15);
01090     tempP = vec_mergel(temp7, temp15);
01091 
01092     temp0  = vec_mergeh(tempA, tempI);
01093     temp1  = vec_mergel(tempA, tempI);
01094     temp2  = vec_mergeh(tempB, tempJ);
01095     temp3  = vec_mergel(tempB, tempJ);
01096     temp4  = vec_mergeh(tempC, tempK);
01097     temp5  = vec_mergel(tempC, tempK);
01098     temp6  = vec_mergeh(tempD, tempL);
01099     temp7  = vec_mergel(tempD, tempL);
01100     temp8  = vec_mergeh(tempE, tempM);
01101     temp9  = vec_mergel(tempE, tempM);
01102     temp10 = vec_mergeh(tempF, tempN);
01103     temp11 = vec_mergel(tempF, tempN);
01104     temp12 = vec_mergeh(tempG, tempO);
01105     temp13 = vec_mergel(tempG, tempO);
01106     temp14 = vec_mergeh(tempH, tempP);
01107     temp15 = vec_mergel(tempH, tempP);
01108 
01109     vec_st(temp0,    0, dst);
01110     vec_st(temp1,   16, dst);
01111     vec_st(temp2,   32, dst);
01112     vec_st(temp3,   48, dst);
01113     vec_st(temp4,   64, dst);
01114     vec_st(temp5,   80, dst);
01115     vec_st(temp6,   96, dst);
01116     vec_st(temp7,  112, dst);
01117     vec_st(temp8,  128, dst);
01118     vec_st(temp9,  144, dst);
01119     vec_st(temp10, 160, dst);
01120     vec_st(temp11, 176, dst);
01121     vec_st(temp12, 192, dst);
01122     vec_st(temp13, 208, dst);
01123     vec_st(temp14, 224, dst);
01124     vec_st(temp15, 240, dst);
01125 }
01126 
01127 static inline void transpose_8x16_char_fromPackedAlign_altivec(unsigned char* dst, unsigned char* src, int stride) {
01128     const vector unsigned char zero = vec_splat_u8(0);
01129 
01130 #define LOAD_DOUBLE_LINE(i, j)                                  \
01131     vector unsigned char src##i = vec_ld(i * 16, src);            \
01132     vector unsigned char src##j = vec_ld(j * 16, src)
01133 
01134     LOAD_DOUBLE_LINE(0, 1);
01135     LOAD_DOUBLE_LINE(2, 3);
01136     LOAD_DOUBLE_LINE(4, 5);
01137     LOAD_DOUBLE_LINE(6, 7);
01138     LOAD_DOUBLE_LINE(8, 9);
01139     LOAD_DOUBLE_LINE(10, 11);
01140     LOAD_DOUBLE_LINE(12, 13);
01141     LOAD_DOUBLE_LINE(14, 15);
01142 #undef LOAD_DOUBLE_LINE
01143 
01144     vector unsigned char tempA = vec_mergeh(src0, src8);
01145     vector unsigned char tempB;
01146     vector unsigned char tempC = vec_mergeh(src1, src9);
01147     vector unsigned char tempD;
01148     vector unsigned char tempE = vec_mergeh(src2, src10);
01149     vector unsigned char tempG = vec_mergeh(src3, src11);
01150     vector unsigned char tempI = vec_mergeh(src4, src12);
01151     vector unsigned char tempJ;
01152     vector unsigned char tempK = vec_mergeh(src5, src13);
01153     vector unsigned char tempL;
01154     vector unsigned char tempM = vec_mergeh(src6, src14);
01155     vector unsigned char tempO = vec_mergeh(src7, src15);
01156 
01157     vector unsigned char temp0 = vec_mergeh(tempA, tempI);
01158     vector unsigned char temp1 = vec_mergel(tempA, tempI);
01159     vector unsigned char temp2;
01160     vector unsigned char temp3;
01161     vector unsigned char temp4 = vec_mergeh(tempC, tempK);
01162     vector unsigned char temp5 = vec_mergel(tempC, tempK);
01163     vector unsigned char temp6;
01164     vector unsigned char temp7;
01165     vector unsigned char temp8 = vec_mergeh(tempE, tempM);
01166     vector unsigned char temp9 = vec_mergel(tempE, tempM);
01167     vector unsigned char temp12 = vec_mergeh(tempG, tempO);
01168     vector unsigned char temp13 = vec_mergel(tempG, tempO);
01169 
01170     tempA = vec_mergeh(temp0, temp8);
01171     tempB = vec_mergel(temp0, temp8);
01172     tempC = vec_mergeh(temp1, temp9);
01173     tempD = vec_mergel(temp1, temp9);
01174     tempI = vec_mergeh(temp4, temp12);
01175     tempJ = vec_mergel(temp4, temp12);
01176     tempK = vec_mergeh(temp5, temp13);
01177     tempL = vec_mergel(temp5, temp13);
01178 
01179     temp0 = vec_mergeh(tempA, tempI);
01180     temp1 = vec_mergel(tempA, tempI);
01181     temp2 = vec_mergeh(tempB, tempJ);
01182     temp3 = vec_mergel(tempB, tempJ);
01183     temp4 = vec_mergeh(tempC, tempK);
01184     temp5 = vec_mergel(tempC, tempK);
01185     temp6 = vec_mergeh(tempD, tempL);
01186     temp7 = vec_mergel(tempD, tempL);
01187 
01188 
01189     const vector signed char neg1 = vec_splat_s8(-1);
01190 #define STORE_DOUBLE_LINE(i, j)                                         \
01191     vector unsigned char dstA##i = vec_ld(i * stride, dst);             \
01192     vector unsigned char dstB##i = vec_ld(i * stride + 16, dst);        \
01193     vector unsigned char dstA##j = vec_ld(j * stride, dst);             \
01194     vector unsigned char dstB##j = vec_ld(j * stride+ 16, dst);         \
01195     vector unsigned char align##i = vec_lvsr(i * stride, dst);          \
01196     vector unsigned char align##j = vec_lvsr(j * stride, dst);          \
01197     vector unsigned char mask##i = vec_perm(zero, (vector unsigned char)neg1, align##i); \
01198     vector unsigned char mask##j = vec_perm(zero, (vector unsigned char)neg1, align##j); \
01199     vector unsigned char dstR##i = vec_perm(temp##i, temp##i, align##i);\
01200     vector unsigned char dstR##j = vec_perm(temp##j, temp##j, align##j);\
01201     vector unsigned char dstAF##i = vec_sel(dstA##i, dstR##i, mask##i); \
01202     vector unsigned char dstBF##i = vec_sel(dstR##i, dstB##i, mask##i); \
01203     vector unsigned char dstAF##j = vec_sel(dstA##j, dstR##j, mask##j); \
01204     vector unsigned char dstBF##j = vec_sel(dstR##j, dstB##j, mask##j); \
01205     vec_st(dstAF##i, i * stride, dst);                                  \
01206     vec_st(dstBF##i, i * stride + 16, dst);                             \
01207     vec_st(dstAF##j, j * stride, dst);                                  \
01208     vec_st(dstBF##j, j * stride + 16, dst)
01209 
01210     STORE_DOUBLE_LINE(0,1);
01211     STORE_DOUBLE_LINE(2,3);
01212     STORE_DOUBLE_LINE(4,5);
01213     STORE_DOUBLE_LINE(6,7);
01214 }

Generated on Fri Sep 16 2011 17:17:51 for FFmpeg by  doxygen 1.7.1