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FFmpeg/libavcodec/ppc/h264_altivec.c

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  1. /*

  2.  * Copyright (c) 2004 Romain Dolbeau <romain@dolbeau.org>

  3.  *

  4.  * This file is part of FFmpeg.

  5.  *

  6.  * FFmpeg is free software; you can redistribute it and/or

  7.  * modify it under the terms of the GNU Lesser General Public

  8.  * License as published by the Free Software Foundation; either

  9.  * version 2.1 of the License, or (at your option) any later version.

  10.  *

  11.  * FFmpeg is distributed in the hope that it will be useful,

  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  14.  * Lesser General Public License for more details.

  15.  *

  16.  * You should have received a copy of the GNU Lesser General Public

  17.  * License along with FFmpeg; if not, write to the Free Software

  18.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  19.  */

  20. 

  21. #include "libavcodec/dsputil.h"

  22. #include "libavcodec/h264data.h"

  23. 

  24. #include "gcc_fixes.h"

  25. 

  26. #include "dsputil_ppc.h"

  27. #include "dsputil_altivec.h"

  28. #include "util_altivec.h"

  29. #include "types_altivec.h"

  30. 

  31. #define PUT_OP_U8_ALTIVEC(d, s, dst) d = s

  32. #define AVG_OP_U8_ALTIVEC(d, s, dst) d = vec_avg(dst, s)

  33. 

  34. #define OP_U8_ALTIVEC                          PUT_OP_U8_ALTIVEC

  35. #define PREFIX_h264_chroma_mc8_altivec         put_h264_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_h264_chroma_mc8_num

  47. #undef PREFIX_h264_qpel16_h_lowpass_altivec

  48. #undef PREFIX_h264_qpel16_h_lowpass_num

  49. #undef PREFIX_h264_qpel16_v_lowpass_altivec

  50. #undef PREFIX_h264_qpel16_v_lowpass_num

  51. #undef PREFIX_h264_qpel16_hv_lowpass_altivec

  52. #undef PREFIX_h264_qpel16_hv_lowpass_num

  53. 

  54. #define OP_U8_ALTIVEC                          AVG_OP_U8_ALTIVEC

  55. #define PREFIX_h264_chroma_mc8_altivec         avg_h264_chroma_mc8_altivec

  56. #define PREFIX_h264_chroma_mc8_num             altivec_avg_h264_chroma_mc8_num

  57. #define PREFIX_h264_qpel16_h_lowpass_altivec   avg_h264_qpel16_h_lowpass_altivec

  58. #define PREFIX_h264_qpel16_h_lowpass_num       altivec_avg_h264_qpel16_h_lowpass_num

  59. #define PREFIX_h264_qpel16_v_lowpass_altivec   avg_h264_qpel16_v_lowpass_altivec

  60. #define PREFIX_h264_qpel16_v_lowpass_num       altivec_avg_h264_qpel16_v_lowpass_num

  61. #define PREFIX_h264_qpel16_hv_lowpass_altivec  avg_h264_qpel16_hv_lowpass_altivec

  62. #define PREFIX_h264_qpel16_hv_lowpass_num      altivec_avg_h264_qpel16_hv_lowpass_num

  63. #include "h264_template_altivec.c"

  64. #undef OP_U8_ALTIVEC

  65. #undef PREFIX_h264_chroma_mc8_altivec

  66. #undef PREFIX_h264_chroma_mc8_num

  67. #undef PREFIX_h264_qpel16_h_lowpass_altivec

  68. #undef PREFIX_h264_qpel16_h_lowpass_num

  69. #undef PREFIX_h264_qpel16_v_lowpass_altivec

  70. #undef PREFIX_h264_qpel16_v_lowpass_num

  71. #undef PREFIX_h264_qpel16_hv_lowpass_altivec

  72. #undef PREFIX_h264_qpel16_hv_lowpass_num

  73. 

  74. #define H264_MC(OPNAME, SIZE, CODETYPE) \

  75. static void OPNAME ## h264_qpel ## SIZE ## _mc00_ ## CODETYPE (uint8_t *dst, uint8_t *src, int stride){\

  76.     OPNAME ## pixels ## SIZE ## _ ## CODETYPE(dst, src, stride, SIZE);\

  77. }\

  78. \

  79. static void OPNAME ## h264_qpel ## SIZE ## _mc10_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){ \

  80.     DECLARE_ALIGNED_16(uint8_t, half[SIZE*SIZE]);\

  81.     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(half, src, SIZE, stride);\

  82.     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, src, half, stride, stride, SIZE);\

  83. }\

  84. \

  85. static void OPNAME ## h264_qpel ## SIZE ## _mc20_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\

  86.     OPNAME ## h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(dst, src, stride, stride);\

  87. }\

  88. \

  89. static void OPNAME ## h264_qpel ## SIZE ## _mc30_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\

  90.     DECLARE_ALIGNED_16(uint8_t, half[SIZE*SIZE]);\

  91.     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(half, src, SIZE, stride);\

  92.     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, src+1, half, stride, stride, SIZE);\

  93. }\

  94. \

  95. static void OPNAME ## h264_qpel ## SIZE ## _mc01_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\

  96.     DECLARE_ALIGNED_16(uint8_t, half[SIZE*SIZE]);\

  97.     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(half, src, SIZE, stride);\

  98.     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, src, half, stride, stride, SIZE);\

  99. }\

  100. \

  101. static void OPNAME ## h264_qpel ## SIZE ## _mc02_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\

  102.     OPNAME ## h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(dst, src, stride, stride);\

  103. }\

  104. \

  105. static void OPNAME ## h264_qpel ## SIZE ## _mc03_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\

  106.     DECLARE_ALIGNED_16(uint8_t, half[SIZE*SIZE]);\

  107.     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(half, src, SIZE, stride);\

  108.     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, src+stride, half, stride, stride, SIZE);\

  109. }\

  110. \

  111. static void OPNAME ## h264_qpel ## SIZE ## _mc11_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\

  112.     DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\

  113.     DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\

  114.     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src, SIZE, stride);\

  115.     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src, SIZE, stride);\

  116.     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfV, stride, SIZE, SIZE);\

  117. }\

  118. \

  119. static void OPNAME ## h264_qpel ## SIZE ## _mc31_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\

  120.     DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\

  121.     DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\

  122.     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src, SIZE, stride);\

  123.     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src+1, SIZE, stride);\

  124.     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfV, stride, SIZE, SIZE);\

  125. }\

  126. \

  127. static void OPNAME ## h264_qpel ## SIZE ## _mc13_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\

  128.     DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\

  129.     DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\

  130.     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src + stride, SIZE, stride);\

  131.     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src, SIZE, stride);\

  132.     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfV, stride, SIZE, SIZE);\

  133. }\

  134. \

  135. static void OPNAME ## h264_qpel ## SIZE ## _mc33_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\

  136.     DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\

  137.     DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\

  138.     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src + stride, SIZE, stride);\

  139.     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src+1, SIZE, stride);\

  140.     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfV, stride, SIZE, SIZE);\

  141. }\

  142. \

  143. static void OPNAME ## h264_qpel ## SIZE ## _mc22_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\

  144.     DECLARE_ALIGNED_16(int16_t, tmp[SIZE*(SIZE+8)]);\

  145.     OPNAME ## h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(dst, tmp, src, stride, SIZE, stride);\

  146. }\

  147. \

  148. static void OPNAME ## h264_qpel ## SIZE ## _mc21_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\

  149.     DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\

  150.     DECLARE_ALIGNED_16(uint8_t, halfHV[SIZE*SIZE]);\

  151.     DECLARE_ALIGNED_16(int16_t, tmp[SIZE*(SIZE+8)]);\

  152.     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src, SIZE, stride);\

  153.     put_h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(halfHV, tmp, src, SIZE, SIZE, stride);\

  154.     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfHV, stride, SIZE, SIZE);\

  155. }\

  156. \

  157. static void OPNAME ## h264_qpel ## SIZE ## _mc23_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\

  158.     DECLARE_ALIGNED_16(uint8_t, halfH[SIZE*SIZE]);\

  159.     DECLARE_ALIGNED_16(uint8_t, halfHV[SIZE*SIZE]);\

  160.     DECLARE_ALIGNED_16(int16_t, tmp[SIZE*(SIZE+8)]);\

  161.     put_h264_qpel ## SIZE ## _h_lowpass_ ## CODETYPE(halfH, src + stride, SIZE, stride);\

  162.     put_h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(halfHV, tmp, src, SIZE, SIZE, stride);\

  163.     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfH, halfHV, stride, SIZE, SIZE);\

  164. }\

  165. \

  166. static void OPNAME ## h264_qpel ## SIZE ## _mc12_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\

  167.     DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\

  168.     DECLARE_ALIGNED_16(uint8_t, halfHV[SIZE*SIZE]);\

  169.     DECLARE_ALIGNED_16(int16_t, tmp[SIZE*(SIZE+8)]);\

  170.     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src, SIZE, stride);\

  171.     put_h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(halfHV, tmp, src, SIZE, SIZE, stride);\

  172.     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfV, halfHV, stride, SIZE, SIZE);\

  173. }\

  174. \

  175. static void OPNAME ## h264_qpel ## SIZE ## _mc32_ ## CODETYPE(uint8_t *dst, uint8_t *src, int stride){\

  176.     DECLARE_ALIGNED_16(uint8_t, halfV[SIZE*SIZE]);\

  177.     DECLARE_ALIGNED_16(uint8_t, halfHV[SIZE*SIZE]);\

  178.     DECLARE_ALIGNED_16(int16_t, tmp[SIZE*(SIZE+8)]);\

  179.     put_h264_qpel ## SIZE ## _v_lowpass_ ## CODETYPE(halfV, src+1, SIZE, stride);\

  180.     put_h264_qpel ## SIZE ## _hv_lowpass_ ## CODETYPE(halfHV, tmp, src, SIZE, SIZE, stride);\

  181.     OPNAME ## pixels ## SIZE ## _l2_ ## CODETYPE(dst, halfV, halfHV, stride, SIZE, SIZE);\

  182. }\

  183. 

  184. /* this code assume that stride % 16 == 0 */

  185. void put_no_rnd_h264_chroma_mc8_altivec(uint8_t * dst, uint8_t * src, int stride, int h, int x, int y) {

  186.    DECLARE_ALIGNED_16(signed int, ABCD[4]) =

  187.                         {((8 - x) * (8 - y)),

  188.                              ((x) * (8 - y)),

  189.                          ((8 - x) * (y)),

  190.                              ((x) * (y))};

  191.     register int i;

  192.     vec_u8 fperm;

  193.     const vec_s32 vABCD = vec_ld(0, ABCD);

  194.     const vec_s16 vA = vec_splat((vec_s16)vABCD, 1);

  195.     const vec_s16 vB = vec_splat((vec_s16)vABCD, 3);

  196.     const vec_s16 vC = vec_splat((vec_s16)vABCD, 5);

  197.     const vec_s16 vD = vec_splat((vec_s16)vABCD, 7);

  198.     LOAD_ZERO;

  199.     const vec_s16 v28ss = vec_sub(vec_sl(vec_splat_s16(1),vec_splat_u16(5)),vec_splat_s16(4));

  200.     const vec_u16 v6us  = vec_splat_u16(6);

  201.     register int loadSecond     = (((unsigned long)src) % 16) <= 7 ? 0 : 1;

  202.     register int reallyBadAlign = (((unsigned long)src) % 16) == 15 ? 1 : 0;

  203. 

  204.     vec_u8 vsrcAuc, vsrcBuc, vsrcperm0, vsrcperm1;

  205.     vec_u8 vsrc0uc, vsrc1uc;

  206.     vec_s16 vsrc0ssH, vsrc1ssH;

  207.     vec_u8 vsrcCuc, vsrc2uc, vsrc3uc;

  208.     vec_s16 vsrc2ssH, vsrc3ssH, psum;

  209.     vec_u8 vdst, ppsum, fsum;

  210. 

  211.     if (((unsigned long)dst) % 16 == 0) {

  212.         fperm = (vec_u8){0x10, 0x11, 0x12, 0x13,

  213.                            0x14, 0x15, 0x16, 0x17,

  214.                            0x08, 0x09, 0x0A, 0x0B,

  215.                            0x0C, 0x0D, 0x0E, 0x0F};

  216.     } else {

  217.         fperm = (vec_u8){0x00, 0x01, 0x02, 0x03,

  218.                            0x04, 0x05, 0x06, 0x07,

  219.                            0x18, 0x19, 0x1A, 0x1B,

  220.                            0x1C, 0x1D, 0x1E, 0x1F};

  221.     }

  222. 

  223.     vsrcAuc = vec_ld(0, src);

  224. 

  225.     if (loadSecond)

  226.         vsrcBuc = vec_ld(16, src);

  227.     vsrcperm0 = vec_lvsl(0, src);

  228.     vsrcperm1 = vec_lvsl(1, src);

  229. 

  230.     vsrc0uc = vec_perm(vsrcAuc, vsrcBuc, vsrcperm0);

  231.     if (reallyBadAlign)

  232.         vsrc1uc = vsrcBuc;

  233.     else

  234.         vsrc1uc = vec_perm(vsrcAuc, vsrcBuc, vsrcperm1);

  235. 

  236.     vsrc0ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc0uc);

  237.     vsrc1ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc1uc);

  238. 

  239.     if (!loadSecond) {// -> !reallyBadAlign

  240.         for (i = 0 ; i < h ; i++) {

  241. 

  242. 

  243.             vsrcCuc = vec_ld(stride + 0, src);

  244. 

  245.             vsrc2uc = vec_perm(vsrcCuc, vsrcCuc, vsrcperm0);

  246.             vsrc3uc = vec_perm(vsrcCuc, vsrcCuc, vsrcperm1);

  247. 

  248.             vsrc2ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc2uc);

  249.             vsrc3ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc3uc);

  250. 

  251.             psum = vec_mladd(vA, vsrc0ssH, vec_splat_s16(0));

  252.             psum = vec_mladd(vB, vsrc1ssH, psum);

  253.             psum = vec_mladd(vC, vsrc2ssH, psum);

  254.             psum = vec_mladd(vD, vsrc3ssH, psum);

  255.             psum = vec_add(v28ss, psum);

  256.             psum = vec_sra(psum, v6us);

  257. 

  258.             vdst = vec_ld(0, dst);

  259.             ppsum = (vec_u8)vec_packsu(psum, psum);

  260.             fsum = vec_perm(vdst, ppsum, fperm);

  261. 

  262.             vec_st(fsum, 0, dst);

  263. 

  264.             vsrc0ssH = vsrc2ssH;

  265.             vsrc1ssH = vsrc3ssH;

  266. 

  267.             dst += stride;

  268.             src += stride;

  269.         }

  270.     } else {

  271.         vec_u8 vsrcDuc;

  272.         for (i = 0 ; i < h ; i++) {

  273.             vsrcCuc = vec_ld(stride + 0, src);

  274.             vsrcDuc = vec_ld(stride + 16, src);

  275. 

  276.             vsrc2uc = vec_perm(vsrcCuc, vsrcDuc, vsrcperm0);

  277.             if (reallyBadAlign)

  278.                 vsrc3uc = vsrcDuc;

  279.             else

  280.                 vsrc3uc = vec_perm(vsrcCuc, vsrcDuc, vsrcperm1);

  281. 

  282.             vsrc2ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc2uc);

  283.             vsrc3ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc3uc);

  284. 

  285.             psum = vec_mladd(vA, vsrc0ssH, vec_splat_s16(0));

  286.             psum = vec_mladd(vB, vsrc1ssH, psum);

  287.             psum = vec_mladd(vC, vsrc2ssH, psum);

  288.             psum = vec_mladd(vD, vsrc3ssH, psum);

  289.             psum = vec_add(v28ss, psum);

  290.             psum = vec_sr(psum, v6us);

  291. 

  292.             vdst = vec_ld(0, dst);

  293.             ppsum = (vec_u8)vec_pack(psum, psum);

  294.             fsum = vec_perm(vdst, ppsum, fperm);

  295. 

  296.             vec_st(fsum, 0, dst);

  297. 

  298.             vsrc0ssH = vsrc2ssH;

  299.             vsrc1ssH = vsrc3ssH;

  300. 

  301.             dst += stride;

  302.             src += stride;

  303.         }

  304.     }

  305. }

  306. 

  307. static inline void put_pixels16_l2_altivec( uint8_t * dst, const uint8_t * src1,

  308.                                     const uint8_t * src2, int dst_stride,

  309.                                     int src_stride1, int h)

  310. {

  311.     int i;

  312.     vec_u8 a, b, d, tmp1, tmp2, mask, mask_, edges, align;

  313. 

  314.     mask_ = vec_lvsl(0, src2);

  315. 

  316.     for (i = 0; i < h; i++) {

  317. 

  318.         tmp1 = vec_ld(i * src_stride1, src1);

  319.         mask = vec_lvsl(i * src_stride1, src1);

  320.         tmp2 = vec_ld(i * src_stride1 + 15, src1);

  321. 

  322.         a = vec_perm(tmp1, tmp2, mask);

  323. 

  324.         tmp1 = vec_ld(i * 16, src2);

  325.         tmp2 = vec_ld(i * 16 + 15, src2);

  326. 

  327.         b = vec_perm(tmp1, tmp2, mask_);

  328. 

  329.         tmp1 = vec_ld(0, dst);

  330.         mask = vec_lvsl(0, dst);

  331.         tmp2 = vec_ld(15, dst);

  332. 

  333.         d = vec_avg(a, b);

  334. 

  335.         edges = vec_perm(tmp2, tmp1, mask);

  336. 

  337.         align = vec_lvsr(0, dst);

  338. 

  339.         tmp2 = vec_perm(d, edges, align);

  340.         tmp1 = vec_perm(edges, d, align);

  341. 

  342.         vec_st(tmp2, 15, dst);

  343.         vec_st(tmp1, 0 , dst);

  344. 

  345.         dst += dst_stride;

  346.     }

  347. }

  348. 

  349. static inline void avg_pixels16_l2_altivec( uint8_t * dst, const uint8_t * src1,

  350.                                     const uint8_t * src2, int dst_stride,

  351.                                     int src_stride1, int h)

  352. {

  353.     int i;

  354.     vec_u8 a, b, d, tmp1, tmp2, mask, mask_, edges, align;

  355. 

  356.     mask_ = vec_lvsl(0, src2);

  357. 

  358.     for (i = 0; i < h; i++) {

  359. 

  360.         tmp1 = vec_ld(i * src_stride1, src1);

  361.         mask = vec_lvsl(i * src_stride1, src1);

  362.         tmp2 = vec_ld(i * src_stride1 + 15, src1);

  363. 

  364.         a = vec_perm(tmp1, tmp2, mask);

  365. 

  366.         tmp1 = vec_ld(i * 16, src2);

  367.         tmp2 = vec_ld(i * 16 + 15, src2);

  368. 

  369.         b = vec_perm(tmp1, tmp2, mask_);

  370. 

  371.         tmp1 = vec_ld(0, dst);

  372.         mask = vec_lvsl(0, dst);

  373.         tmp2 = vec_ld(15, dst);

  374. 

  375.         d = vec_avg(vec_perm(tmp1, tmp2, mask), vec_avg(a, b));

  376. 

  377.         edges = vec_perm(tmp2, tmp1, mask);

  378. 

  379.         align = vec_lvsr(0, dst);

  380. 

  381.         tmp2 = vec_perm(d, edges, align);

  382.         tmp1 = vec_perm(edges, d, align);

  383. 

  384.         vec_st(tmp2, 15, dst);

  385.         vec_st(tmp1, 0 , dst);

  386. 

  387.         dst += dst_stride;

  388.     }

  389. }

  390. 

  391. /* Implemented but could be faster

  392. #define put_pixels16_l2_altivec(d,s1,s2,ds,s1s,h) put_pixels16_l2(d,s1,s2,ds,s1s,16,h)

  393. #define avg_pixels16_l2_altivec(d,s1,s2,ds,s1s,h) avg_pixels16_l2(d,s1,s2,ds,s1s,16,h)

  394.  */

  395. 

  396. H264_MC(put_, 16, altivec)

  397. H264_MC(avg_, 16, altivec)

  398. 

  399. 

  400. /****************************************************************************

  401.  * IDCT transform:

  402.  ****************************************************************************/

  403. 

  404. #define VEC_1D_DCT(vb0,vb1,vb2,vb3,va0,va1,va2,va3)               \

  405.     /* 1st stage */                                               \

  406.     vz0 = vec_add(vb0,vb2);       /* temp[0] = Y[0] + Y[2] */     \

  407.     vz1 = vec_sub(vb0,vb2);       /* temp[1] = Y[0] - Y[2] */     \

  408.     vz2 = vec_sra(vb1,vec_splat_u16(1));                          \

  409.     vz2 = vec_sub(vz2,vb3);       /* temp[2] = Y[1].1/2 - Y[3] */ \

  410.     vz3 = vec_sra(vb3,vec_splat_u16(1));                          \

  411.     vz3 = vec_add(vb1,vz3);       /* temp[3] = Y[1] + Y[3].1/2 */ \

  412.     /* 2nd stage: output */                                       \

  413.     va0 = vec_add(vz0,vz3);       /* x[0] = temp[0] + temp[3] */  \

  414.     va1 = vec_add(vz1,vz2);       /* x[1] = temp[1] + temp[2] */  \

  415.     va2 = vec_sub(vz1,vz2);       /* x[2] = temp[1] - temp[2] */  \

  416.     va3 = vec_sub(vz0,vz3)        /* x[3] = temp[0] - temp[3] */

  417. 

  418. #define VEC_TRANSPOSE_4(a0,a1,a2,a3,b0,b1,b2,b3) \

  419.     b0 = vec_mergeh( a0, a0 ); \

  420.     b1 = vec_mergeh( a1, a0 ); \

  421.     b2 = vec_mergeh( a2, a0 ); \

  422.     b3 = vec_mergeh( a3, a0 ); \

  423.     a0 = vec_mergeh( b0, b2 ); \

  424.     a1 = vec_mergel( b0, b2 ); \

  425.     a2 = vec_mergeh( b1, b3 ); \

  426.     a3 = vec_mergel( b1, b3 ); \

  427.     b0 = vec_mergeh( a0, a2 ); \

  428.     b1 = vec_mergel( a0, a2 ); \

  429.     b2 = vec_mergeh( a1, a3 ); \

  430.     b3 = vec_mergel( a1, a3 )

  431. 

  432. #define VEC_LOAD_U8_ADD_S16_STORE_U8(va)                      \

  433.     vdst_orig = vec_ld(0, dst);                               \

  434.     vdst = vec_perm(vdst_orig, zero_u8v, vdst_mask);          \

  435.     vdst_ss = (vec_s16) vec_mergeh(zero_u8v, vdst);         \

  436.     va = vec_add(va, vdst_ss);                                \

  437.     va_u8 = vec_packsu(va, zero_s16v);                        \

  438.     va_u32 = vec_splat((vec_u32)va_u8, 0);                  \

  439.     vec_ste(va_u32, element, (uint32_t*)dst);

  440. 

  441. static void ff_h264_idct_add_altivec(uint8_t *dst, DCTELEM *block, int stride)

  442. {

  443.     vec_s16 va0, va1, va2, va3;

  444.     vec_s16 vz0, vz1, vz2, vz3;

  445.     vec_s16 vtmp0, vtmp1, vtmp2, vtmp3;

  446.     vec_u8 va_u8;

  447.     vec_u32 va_u32;

  448.     vec_s16 vdst_ss;

  449.     const vec_u16 v6us = vec_splat_u16(6);

  450.     vec_u8 vdst, vdst_orig;

  451.     vec_u8 vdst_mask = vec_lvsl(0, dst);

  452.     int element = ((unsigned long)dst & 0xf) >> 2;

  453.     LOAD_ZERO;

  454. 

  455.     block[0] += 32;  /* add 32 as a DC-level for rounding */

  456. 

  457.     vtmp0 = vec_ld(0,block);

  458.     vtmp1 = vec_sld(vtmp0, vtmp0, 8);

  459.     vtmp2 = vec_ld(16,block);

  460.     vtmp3 = vec_sld(vtmp2, vtmp2, 8);

  461. 

  462.     VEC_1D_DCT(vtmp0,vtmp1,vtmp2,vtmp3,va0,va1,va2,va3);

  463.     VEC_TRANSPOSE_4(va0,va1,va2,va3,vtmp0,vtmp1,vtmp2,vtmp3);

  464.     VEC_1D_DCT(vtmp0,vtmp1,vtmp2,vtmp3,va0,va1,va2,va3);

  465. 

  466.     va0 = vec_sra(va0,v6us);

  467.     va1 = vec_sra(va1,v6us);

  468.     va2 = vec_sra(va2,v6us);

  469.     va3 = vec_sra(va3,v6us);

  470. 

  471.     VEC_LOAD_U8_ADD_S16_STORE_U8(va0);

  472.     dst += stride;

  473.     VEC_LOAD_U8_ADD_S16_STORE_U8(va1);

  474.     dst += stride;

  475.     VEC_LOAD_U8_ADD_S16_STORE_U8(va2);

  476.     dst += stride;

  477.     VEC_LOAD_U8_ADD_S16_STORE_U8(va3);

  478. }

  479. 

  480. #define IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7,  d0, d1, d2, d3, d4, d5, d6, d7) {\

  481.     /*        a0  = SRC(0) + SRC(4); */ \

  482.     vec_s16 a0v = vec_add(s0, s4);    \

  483.     /*        a2  = SRC(0) - SRC(4); */ \

  484.     vec_s16 a2v = vec_sub(s0, s4);    \

  485.     /*        a4  =           (SRC(2)>>1) - SRC(6); */ \

  486.     vec_s16 a4v = vec_sub(vec_sra(s2, onev), s6);    \

  487.     /*        a6  =           (SRC(6)>>1) + SRC(2); */ \

  488.     vec_s16 a6v = vec_add(vec_sra(s6, onev), s2);    \

  489.     /*        b0  =         a0 + a6; */ \

  490.     vec_s16 b0v = vec_add(a0v, a6v);  \

  491.     /*        b2  =         a2 + a4; */ \

  492.     vec_s16 b2v = vec_add(a2v, a4v);  \

  493.     /*        b4  =         a2 - a4; */ \

  494.     vec_s16 b4v = vec_sub(a2v, a4v);  \

  495.     /*        b6  =         a0 - a6; */ \

  496.     vec_s16 b6v = vec_sub(a0v, a6v);  \

  497.     /* a1 =  SRC(5) - SRC(3) - SRC(7) - (SRC(7)>>1); */ \

  498.     /*        a1 =             (SRC(5)-SRC(3)) -  (SRC(7)  +  (SRC(7)>>1)); */ \

  499.     vec_s16 a1v = vec_sub( vec_sub(s5, s3), vec_add(s7, vec_sra(s7, onev)) ); \

  500.     /* a3 =  SRC(7) + SRC(1) - SRC(3) - (SRC(3)>>1); */ \

  501.     /*        a3 =             (SRC(7)+SRC(1)) -  (SRC(3)  +  (SRC(3)>>1)); */ \

  502.     vec_s16 a3v = vec_sub( vec_add(s7, s1), vec_add(s3, vec_sra(s3, onev)) );\

  503.     /* a5 =  SRC(7) - SRC(1) + SRC(5) + (SRC(5)>>1); */ \

  504.     /*        a5 =             (SRC(7)-SRC(1)) +   SRC(5) +   (SRC(5)>>1); */ \

  505.     vec_s16 a5v = vec_add( vec_sub(s7, s1), vec_add(s5, vec_sra(s5, onev)) );\

  506.     /*        a7 =                SRC(5)+SRC(3) +  SRC(1) +   (SRC(1)>>1); */ \

  507.     vec_s16 a7v = vec_add( vec_add(s5, s3), vec_add(s1, vec_sra(s1, onev)) );\

  508.     /*        b1 =                  (a7>>2)  +  a1; */ \

  509.     vec_s16 b1v = vec_add( vec_sra(a7v, twov), a1v); \

  510.     /*        b3 =          a3 +        (a5>>2); */ \

  511.     vec_s16 b3v = vec_add(a3v, vec_sra(a5v, twov)); \

  512.     /*        b5 =                  (a3>>2)  -   a5; */ \

  513.     vec_s16 b5v = vec_sub( vec_sra(a3v, twov), a5v); \

  514.     /*        b7 =           a7 -        (a1>>2); */ \

  515.     vec_s16 b7v = vec_sub( a7v, vec_sra(a1v, twov)); \

  516.     /* DST(0,    b0 + b7); */ \

  517.     d0 = vec_add(b0v, b7v); \

  518.     /* DST(1,    b2 + b5); */ \

  519.     d1 = vec_add(b2v, b5v); \

  520.     /* DST(2,    b4 + b3); */ \

  521.     d2 = vec_add(b4v, b3v); \

  522.     /* DST(3,    b6 + b1); */ \

  523.     d3 = vec_add(b6v, b1v); \

  524.     /* DST(4,    b6 - b1); */ \

  525.     d4 = vec_sub(b6v, b1v); \

  526.     /* DST(5,    b4 - b3); */ \

  527.     d5 = vec_sub(b4v, b3v); \

  528.     /* DST(6,    b2 - b5); */ \

  529.     d6 = vec_sub(b2v, b5v); \

  530.     /* DST(7,    b0 - b7); */ \

  531.     d7 = vec_sub(b0v, b7v); \

  532. }

  533. 

  534. #define ALTIVEC_STORE_SUM_CLIP(dest, idctv, perm_ldv, perm_stv, sel) { \

  535.     /* unaligned load */                                       \

  536.     vec_u8 hv = vec_ld( 0, dest );                           \

  537.     vec_u8 lv = vec_ld( 7, dest );                           \

  538.     vec_u8 dstv   = vec_perm( hv, lv, (vec_u8)perm_ldv );  \

  539.     vec_s16 idct_sh6 = vec_sra(idctv, sixv);                 \

  540.     vec_u16 dst16 = (vec_u16)vec_mergeh(zero_u8v, dstv);   \

  541.     vec_s16 idstsum = vec_adds(idct_sh6, (vec_s16)dst16);  \

  542.     vec_u8 idstsum8 = vec_packsu(zero_s16v, idstsum);        \

  543.     vec_u8 edgehv;                                           \

  544.     /* unaligned store */                                      \

  545.     vec_u8 bodyv  = vec_perm( idstsum8, idstsum8, perm_stv );\

  546.     vec_u8 edgelv = vec_perm( sel, zero_u8v, perm_stv );     \

  547.     lv    = vec_sel( lv, bodyv, edgelv );                      \

  548.     vec_st( lv, 7, dest );                                     \

  549.     hv    = vec_ld( 0, dest );                                 \

  550.     edgehv = vec_perm( zero_u8v, sel, perm_stv );              \

  551.     hv    = vec_sel( hv, bodyv, edgehv );                      \

  552.     vec_st( hv, 0, dest );                                     \

  553.  }

  554. 

  555. void ff_h264_idct8_add_altivec( uint8_t *dst, DCTELEM *dct, int stride ) {

  556.     vec_s16 s0, s1, s2, s3, s4, s5, s6, s7;

  557.     vec_s16 d0, d1, d2, d3, d4, d5, d6, d7;

  558.     vec_s16 idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7;

  559. 

  560.     vec_u8 perm_ldv = vec_lvsl(0, dst);

  561.     vec_u8 perm_stv = vec_lvsr(8, dst);

  562. 

  563.     const vec_u16 onev = vec_splat_u16(1);

  564.     const vec_u16 twov = vec_splat_u16(2);

  565.     const vec_u16 sixv = vec_splat_u16(6);

  566. 

  567.     const vec_u8 sel = (vec_u8) {0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1};

  568.     LOAD_ZERO;

  569. 

  570.     dct[0] += 32; // rounding for the >>6 at the end

  571. 

  572.     s0 = vec_ld(0x00, (int16_t*)dct);

  573.     s1 = vec_ld(0x10, (int16_t*)dct);

  574.     s2 = vec_ld(0x20, (int16_t*)dct);

  575.     s3 = vec_ld(0x30, (int16_t*)dct);

  576.     s4 = vec_ld(0x40, (int16_t*)dct);

  577.     s5 = vec_ld(0x50, (int16_t*)dct);

  578.     s6 = vec_ld(0x60, (int16_t*)dct);

  579.     s7 = vec_ld(0x70, (int16_t*)dct);

  580. 

  581.     IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7,

  582.                      d0, d1, d2, d3, d4, d5, d6, d7);

  583. 

  584.     TRANSPOSE8( d0,  d1,  d2,  d3,  d4,  d5,  d6, d7 );

  585. 

  586.     IDCT8_1D_ALTIVEC(d0,  d1,  d2,  d3,  d4,  d5,  d6, d7,

  587.                      idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7);

  588. 

  589.     ALTIVEC_STORE_SUM_CLIP(&dst[0*stride], idct0, perm_ldv, perm_stv, sel);

  590.     ALTIVEC_STORE_SUM_CLIP(&dst[1*stride], idct1, perm_ldv, perm_stv, sel);

  591.     ALTIVEC_STORE_SUM_CLIP(&dst[2*stride], idct2, perm_ldv, perm_stv, sel);

  592.     ALTIVEC_STORE_SUM_CLIP(&dst[3*stride], idct3, perm_ldv, perm_stv, sel);

  593.     ALTIVEC_STORE_SUM_CLIP(&dst[4*stride], idct4, perm_ldv, perm_stv, sel);

  594.     ALTIVEC_STORE_SUM_CLIP(&dst[5*stride], idct5, perm_ldv, perm_stv, sel);

  595.     ALTIVEC_STORE_SUM_CLIP(&dst[6*stride], idct6, perm_ldv, perm_stv, sel);

  596.     ALTIVEC_STORE_SUM_CLIP(&dst[7*stride], idct7, perm_ldv, perm_stv, sel);

  597. }

  598. 

  599. // TODO: implement this in AltiVec

  600. static void ff_h264_idct8_dc_add_altivec(uint8_t *dst, DCTELEM *block, int stride) {

  601.     int i, j;

  602.     uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;

  603.     int dc = (block[0] + 32) >> 6;

  604.     for( j = 0; j < 8; j++ )

  605.     {

  606.         for( i = 0; i < 8; i++ )

  607.             dst[i] = cm[ dst[i] + dc ];

  608.         dst += stride;

  609.     }

  610. }

  611. 

  612. static void ff_h264_idct8_add4_altivec(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){

  613.     int i;

  614.     for(i=0; i<16; i+=4){

  615.         int nnz = nnzc[ scan8[i] ];

  616.         if(nnz){

  617.             if(nnz==1 && block[i*16]) ff_h264_idct8_dc_add_altivec(dst + block_offset[i], block + i*16, stride);

  618.             else                      ff_h264_idct8_add_altivec   (dst + block_offset[i], block + i*16, stride);

  619.         }

  620.     }

  621. }

  622. 

  623. #define transpose4x16(r0, r1, r2, r3) {      \

  624.     register vec_u8 r4;                    \

  625.     register vec_u8 r5;                    \

  626.     register vec_u8 r6;                    \

  627.     register vec_u8 r7;                    \

  628.                                              \

  629.     r4 = vec_mergeh(r0, r2);  /*0, 2 set 0*/ \

  630.     r5 = vec_mergel(r0, r2);  /*0, 2 set 1*/ \

  631.     r6 = vec_mergeh(r1, r3);  /*1, 3 set 0*/ \

  632.     r7 = vec_mergel(r1, r3);  /*1, 3 set 1*/ \

  633.                                              \

  634.     r0 = vec_mergeh(r4, r6);  /*all set 0*/  \

  635.     r1 = vec_mergel(r4, r6);  /*all set 1*/  \

  636.     r2 = vec_mergeh(r5, r7);  /*all set 2*/  \

  637.     r3 = vec_mergel(r5, r7);  /*all set 3*/  \

  638. }

  639. 

  640. static inline void write16x4(uint8_t *dst, int dst_stride,

  641.                              register vec_u8 r0, register vec_u8 r1,

  642.                              register vec_u8 r2, register vec_u8 r3) {

  643.     DECLARE_ALIGNED_16(unsigned char, result[64]);

  644.     uint32_t *src_int = (uint32_t *)result, *dst_int = (uint32_t *)dst;

  645.     int int_dst_stride = dst_stride/4;

  646. 

  647.     vec_st(r0, 0, result);

  648.     vec_st(r1, 16, result);

  649.     vec_st(r2, 32, result);

  650.     vec_st(r3, 48, result);

  651.     /* FIXME: there has to be a better way!!!! */

  652.     *dst_int = *src_int;

  653.     *(dst_int+   int_dst_stride) = *(src_int + 1);

  654.     *(dst_int+ 2*int_dst_stride) = *(src_int + 2);

  655.     *(dst_int+ 3*int_dst_stride) = *(src_int + 3);

  656.     *(dst_int+ 4*int_dst_stride) = *(src_int + 4);

  657.     *(dst_int+ 5*int_dst_stride) = *(src_int + 5);

  658.     *(dst_int+ 6*int_dst_stride) = *(src_int + 6);

  659.     *(dst_int+ 7*int_dst_stride) = *(src_int + 7);

  660.     *(dst_int+ 8*int_dst_stride) = *(src_int + 8);

  661.     *(dst_int+ 9*int_dst_stride) = *(src_int + 9);

  662.     *(dst_int+10*int_dst_stride) = *(src_int + 10);

  663.     *(dst_int+11*int_dst_stride) = *(src_int + 11);

  664.     *(dst_int+12*int_dst_stride) = *(src_int + 12);

  665.     *(dst_int+13*int_dst_stride) = *(src_int + 13);

  666.     *(dst_int+14*int_dst_stride) = *(src_int + 14);

  667.     *(dst_int+15*int_dst_stride) = *(src_int + 15);

  668. }

  669. 

  670. /** \brief performs a 6x16 transpose of data in src, and stores it to dst

  671.     \todo FIXME: see if we can't spare some vec_lvsl() by them factorizing

  672.     out of unaligned_load() */

  673. #define readAndTranspose16x6(src, src_stride, r8, r9, r10, r11, r12, r13) {\

  674.     register vec_u8 r0  = unaligned_load(0,             src);            \

  675.     register vec_u8 r1  = unaligned_load(   src_stride, src);            \

  676.     register vec_u8 r2  = unaligned_load(2* src_stride, src);            \

  677.     register vec_u8 r3  = unaligned_load(3* src_stride, src);            \

  678.     register vec_u8 r4  = unaligned_load(4* src_stride, src);            \

  679.     register vec_u8 r5  = unaligned_load(5* src_stride, src);            \

  680.     register vec_u8 r6  = unaligned_load(6* src_stride, src);            \

  681.     register vec_u8 r7  = unaligned_load(7* src_stride, src);            \

  682.     register vec_u8 r14 = unaligned_load(14*src_stride, src);            \

  683.     register vec_u8 r15 = unaligned_load(15*src_stride, src);            \

  684.                                                                            \

  685.     r8  = unaligned_load( 8*src_stride, src);                              \

  686.     r9  = unaligned_load( 9*src_stride, src);                              \

  687.     r10 = unaligned_load(10*src_stride, src);                              \

  688.     r11 = unaligned_load(11*src_stride, src);                              \

  689.     r12 = unaligned_load(12*src_stride, src);                              \

  690.     r13 = unaligned_load(13*src_stride, src);                              \

  691.                                                                            \

  692.     /*Merge first pairs*/                                                  \

  693.     r0 = vec_mergeh(r0, r8);    /*0, 8*/                                   \

  694.     r1 = vec_mergeh(r1, r9);    /*1, 9*/                                   \

  695.     r2 = vec_mergeh(r2, r10);   /*2,10*/                                   \

  696.     r3 = vec_mergeh(r3, r11);   /*3,11*/                                   \

  697.     r4 = vec_mergeh(r4, r12);   /*4,12*/                                   \

  698.     r5 = vec_mergeh(r5, r13);   /*5,13*/                                   \

  699.     r6 = vec_mergeh(r6, r14);   /*6,14*/                                   \

  700.     r7 = vec_mergeh(r7, r15);   /*7,15*/                                   \

  701.                                                                            \

  702.     /*Merge second pairs*/                                                 \

  703.     r8  = vec_mergeh(r0, r4);   /*0,4, 8,12 set 0*/                        \

  704.     r9  = vec_mergel(r0, r4);   /*0,4, 8,12 set 1*/                        \

  705.     r10 = vec_mergeh(r1, r5);   /*1,5, 9,13 set 0*/                        \

  706.     r11 = vec_mergel(r1, r5);   /*1,5, 9,13 set 1*/                        \

  707.     r12 = vec_mergeh(r2, r6);   /*2,6,10,14 set 0*/                        \

  708.     r13 = vec_mergel(r2, r6);   /*2,6,10,14 set 1*/                        \

  709.     r14 = vec_mergeh(r3, r7);   /*3,7,11,15 set 0*/                        \

  710.     r15 = vec_mergel(r3, r7);   /*3,7,11,15 set 1*/                        \

  711.                                                                            \

  712.     /*Third merge*/                                                        \

  713.     r0 = vec_mergeh(r8,  r12);  /*0,2,4,6,8,10,12,14 set 0*/               \

  714.     r1 = vec_mergel(r8,  r12);  /*0,2,4,6,8,10,12,14 set 1*/               \

  715.     r2 = vec_mergeh(r9,  r13);  /*0,2,4,6,8,10,12,14 set 2*/               \

  716.     r4 = vec_mergeh(r10, r14);  /*1,3,5,7,9,11,13,15 set 0*/               \

  717.     r5 = vec_mergel(r10, r14);  /*1,3,5,7,9,11,13,15 set 1*/               \

  718.     r6 = vec_mergeh(r11, r15);  /*1,3,5,7,9,11,13,15 set 2*/               \

  719.     /* Don't need to compute 3 and 7*/                                     \

  720.                                                                            \

  721.     /*Final merge*/                                                        \

  722.     r8  = vec_mergeh(r0, r4);   /*all set 0*/                              \

  723.     r9  = vec_mergel(r0, r4);   /*all set 1*/                              \

  724.     r10 = vec_mergeh(r1, r5);   /*all set 2*/                              \

  725.     r11 = vec_mergel(r1, r5);   /*all set 3*/                              \

  726.     r12 = vec_mergeh(r2, r6);   /*all set 4*/                              \

  727.     r13 = vec_mergel(r2, r6);   /*all set 5*/                              \

  728.     /* Don't need to compute 14 and 15*/                                   \

  729.                                                                            \

  730. }

  731. 

  732. // out: o = |x-y| < a

  733. static inline vec_u8 diff_lt_altivec ( register vec_u8 x,

  734.                                          register vec_u8 y,

  735.                                          register vec_u8 a) {

  736. 

  737.     register vec_u8 diff = vec_subs(x, y);

  738.     register vec_u8 diffneg = vec_subs(y, x);

  739.     register vec_u8 o = vec_or(diff, diffneg); /* |x-y| */

  740.     o = (vec_u8)vec_cmplt(o, a);

  741.     return o;

  742. }

  743. 

  744. static inline vec_u8 h264_deblock_mask ( register vec_u8 p0,

  745.                                            register vec_u8 p1,

  746.                                            register vec_u8 q0,

  747.                                            register vec_u8 q1,

  748.                                            register vec_u8 alpha,

  749.                                            register vec_u8 beta) {

  750. 

  751.     register vec_u8 mask;

  752.     register vec_u8 tempmask;

  753. 

  754.     mask = diff_lt_altivec(p0, q0, alpha);

  755.     tempmask = diff_lt_altivec(p1, p0, beta);

  756.     mask = vec_and(mask, tempmask);

  757.     tempmask = diff_lt_altivec(q1, q0, beta);

  758.     mask = vec_and(mask, tempmask);

  759. 

  760.     return mask;

  761. }

  762. 

  763. // out: newp1 = clip((p2 + ((p0 + q0 + 1) >> 1)) >> 1, p1-tc0, p1+tc0)

  764. static inline vec_u8 h264_deblock_q1(register vec_u8 p0,

  765.                                        register vec_u8 p1,

  766.                                        register vec_u8 p2,

  767.                                        register vec_u8 q0,

  768.                                        register vec_u8 tc0) {

  769. 

  770.     register vec_u8 average = vec_avg(p0, q0);

  771.     register vec_u8 temp;

  772.     register vec_u8 uncliped;

  773.     register vec_u8 ones;

  774.     register vec_u8 max;

  775.     register vec_u8 min;

  776.     register vec_u8 newp1;

  777. 

  778.     temp = vec_xor(average, p2);

  779.     average = vec_avg(average, p2);     /*avg(p2, avg(p0, q0)) */

  780.     ones = vec_splat_u8(1);

  781.     temp = vec_and(temp, ones);         /*(p2^avg(p0, q0)) & 1 */

  782.     uncliped = vec_subs(average, temp); /*(p2+((p0+q0+1)>>1))>>1 */

  783.     max = vec_adds(p1, tc0);

  784.     min = vec_subs(p1, tc0);

  785.     newp1 = vec_max(min, uncliped);

  786.     newp1 = vec_min(max, newp1);

  787.     return newp1;

  788. }

  789. 

  790. #define h264_deblock_p0_q0(p0, p1, q0, q1, tc0masked) {                                           \

  791.                                                                                                   \

  792.     const vec_u8 A0v = vec_sl(vec_splat_u8(10), vec_splat_u8(4));                               \

  793.                                                                                                   \

  794.     register vec_u8 pq0bit = vec_xor(p0,q0);                                                    \

  795.     register vec_u8 q1minus;                                                                    \

  796.     register vec_u8 p0minus;                                                                    \

  797.     register vec_u8 stage1;                                                                     \

  798.     register vec_u8 stage2;                                                                     \

  799.     register vec_u8 vec160;                                                                     \

  800.     register vec_u8 delta;                                                                      \

  801.     register vec_u8 deltaneg;                                                                   \

  802.                                                                                                   \

  803.     q1minus = vec_nor(q1, q1);                 /* 255 - q1 */                                     \

  804.     stage1 = vec_avg(p1, q1minus);             /* (p1 - q1 + 256)>>1 */                           \

  805.     stage2 = vec_sr(stage1, vec_splat_u8(1));  /* (p1 - q1 + 256)>>2 = 64 + (p1 - q1) >> 2 */     \

  806.     p0minus = vec_nor(p0, p0);                 /* 255 - p0 */                                     \

  807.     stage1 = vec_avg(q0, p0minus);             /* (q0 - p0 + 256)>>1 */                           \

  808.     pq0bit = vec_and(pq0bit, vec_splat_u8(1));                                                    \

  809.     stage2 = vec_avg(stage2, pq0bit);          /* 32 + ((q0 - p0)&1 + (p1 - q1) >> 2 + 1) >> 1 */ \

  810.     stage2 = vec_adds(stage2, stage1);         /* 160 + ((p0 - q0) + (p1 - q1) >> 2 + 1) >> 1 */  \

  811.     vec160 = vec_ld(0, &A0v);                                                                     \

  812.     deltaneg = vec_subs(vec160, stage2);       /* -d */                                           \

  813.     delta = vec_subs(stage2, vec160);          /* d */                                            \

  814.     deltaneg = vec_min(tc0masked, deltaneg);                                                      \

  815.     delta = vec_min(tc0masked, delta);                                                            \

  816.     p0 = vec_subs(p0, deltaneg);                                                                  \

  817.     q0 = vec_subs(q0, delta);                                                                     \

  818.     p0 = vec_adds(p0, delta);                                                                     \

  819.     q0 = vec_adds(q0, deltaneg);                                                                  \

  820. }

  821. 

  822. #define h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0) {            \

  823.     DECLARE_ALIGNED_16(unsigned char, temp[16]);                                             \

  824.     register vec_u8 alphavec;                                                              \

  825.     register vec_u8 betavec;                                                               \

  826.     register vec_u8 mask;                                                                  \

  827.     register vec_u8 p1mask;                                                                \

  828.     register vec_u8 q1mask;                                                                \

  829.     register vector signed   char tc0vec;                                                    \

  830.     register vec_u8 finaltc0;                                                              \

  831.     register vec_u8 tc0masked;                                                             \

  832.     register vec_u8 newp1;                                                                 \

  833.     register vec_u8 newq1;                                                                 \

  834.                                                                                              \

  835.     temp[0] = alpha;                                                                         \

  836.     temp[1] = beta;                                                                          \

  837.     alphavec = vec_ld(0, temp);                                                              \

  838.     betavec = vec_splat(alphavec, 0x1);                                                      \

  839.     alphavec = vec_splat(alphavec, 0x0);                                                     \

  840.     mask = h264_deblock_mask(p0, p1, q0, q1, alphavec, betavec); /*if in block */            \

  841.                                                                                              \

  842.     *((int *)temp) = *((int *)tc0);                                                          \

  843.     tc0vec = vec_ld(0, (signed char*)temp);                                                  \

  844.     tc0vec = vec_mergeh(tc0vec, tc0vec);                                                     \

  845.     tc0vec = vec_mergeh(tc0vec, tc0vec);                                                     \

  846.     mask = vec_and(mask, vec_cmpgt(tc0vec, vec_splat_s8(-1)));  /* if tc0[i] >= 0 */         \

  847.     finaltc0 = vec_and((vec_u8)tc0vec, mask);     /* tc = tc0 */                           \

  848.                                                                                              \

  849.     p1mask = diff_lt_altivec(p2, p0, betavec);                                               \

  850.     p1mask = vec_and(p1mask, mask);                             /* if ( |p2 - p0| < beta) */ \

  851.     tc0masked = vec_and(p1mask, (vec_u8)tc0vec);                                           \

  852.     finaltc0 = vec_sub(finaltc0, p1mask);                       /* tc++ */                   \

  853.     newp1 = h264_deblock_q1(p0, p1, p2, q0, tc0masked);                                      \

  854.     /*end if*/                                                                               \

  855.                                                                                              \

  856.     q1mask = diff_lt_altivec(q2, q0, betavec);                                               \

  857.     q1mask = vec_and(q1mask, mask);                             /* if ( |q2 - q0| < beta ) */\

  858.     tc0masked = vec_and(q1mask, (vec_u8)tc0vec);                                           \

  859.     finaltc0 = vec_sub(finaltc0, q1mask);                       /* tc++ */                   \

  860.     newq1 = h264_deblock_q1(p0, q1, q2, q0, tc0masked);                                      \

  861.     /*end if*/                                                                               \

  862.                                                                                              \

  863.     h264_deblock_p0_q0(p0, p1, q0, q1, finaltc0);                                            \

  864.     p1 = newp1;                                                                              \

  865.     q1 = newq1;                                                                              \

  866. }

  867. 

  868. static void h264_v_loop_filter_luma_altivec(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) {

  869. 

  870.     if ((tc0[0] & tc0[1] & tc0[2] & tc0[3]) >= 0) {

  871.         register vec_u8 p2 = vec_ld(-3*stride, pix);

  872.         register vec_u8 p1 = vec_ld(-2*stride, pix);

  873.         register vec_u8 p0 = vec_ld(-1*stride, pix);

  874.         register vec_u8 q0 = vec_ld(0, pix);

  875.         register vec_u8 q1 = vec_ld(stride, pix);

  876.         register vec_u8 q2 = vec_ld(2*stride, pix);

  877.         h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0);

  878.         vec_st(p1, -2*stride, pix);

  879.         vec_st(p0, -1*stride, pix);

  880.         vec_st(q0, 0, pix);

  881.         vec_st(q1, stride, pix);

  882.     }

  883. }

  884. 

  885. static void h264_h_loop_filter_luma_altivec(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) {

  886. 

  887.     register vec_u8 line0, line1, line2, line3, line4, line5;

  888.     if ((tc0[0] & tc0[1] & tc0[2] & tc0[3]) < 0)

  889.         return;

  890.     readAndTranspose16x6(pix-3, stride, line0, line1, line2, line3, line4, line5);

  891.     h264_loop_filter_luma_altivec(line0, line1, line2, line3, line4, line5, alpha, beta, tc0);

  892.     transpose4x16(line1, line2, line3, line4);

  893.     write16x4(pix-2, stride, line1, line2, line3, line4);

  894. }

  895. 

  896. void dsputil_h264_init_ppc(DSPContext* c, AVCodecContext *avctx) {

  897. 

  898.     if (has_altivec()) {

  899.         c->put_h264_chroma_pixels_tab[0] = put_h264_chroma_mc8_altivec;

  900.         c->put_no_rnd_h264_chroma_pixels_tab[0] = put_no_rnd_h264_chroma_mc8_altivec;

  901.         c->avg_h264_chroma_pixels_tab[0] = avg_h264_chroma_mc8_altivec;

  902. /* ff_h264_idct_add_altivec may be re-enabled once AltiVec versions of

  903.    h264_idct_add16, h264_idct_add16intra, h264_idct_add8 are implemented

  904.         c->h264_idct_add = ff_h264_idct_add_altivec;

  905. */

  906.         c->h264_idct8_add = ff_h264_idct8_add_altivec;

  907.         c->h264_idct8_add4 = ff_h264_idct8_add4_altivec;

  908.         c->h264_v_loop_filter_luma= h264_v_loop_filter_luma_altivec;

  909.         c->h264_h_loop_filter_luma= h264_h_loop_filter_luma_altivec;

  910. 

  911. #define dspfunc(PFX, IDX, NUM) \

  912.         c->PFX ## _pixels_tab[IDX][ 0] = PFX ## NUM ## _mc00_altivec; \

  913.         c->PFX ## _pixels_tab[IDX][ 1] = PFX ## NUM ## _mc10_altivec; \

  914.         c->PFX ## _pixels_tab[IDX][ 2] = PFX ## NUM ## _mc20_altivec; \

  915.         c->PFX ## _pixels_tab[IDX][ 3] = PFX ## NUM ## _mc30_altivec; \

  916.         c->PFX ## _pixels_tab[IDX][ 4] = PFX ## NUM ## _mc01_altivec; \

  917.         c->PFX ## _pixels_tab[IDX][ 5] = PFX ## NUM ## _mc11_altivec; \

  918.         c->PFX ## _pixels_tab[IDX][ 6] = PFX ## NUM ## _mc21_altivec; \

  919.         c->PFX ## _pixels_tab[IDX][ 7] = PFX ## NUM ## _mc31_altivec; \

  920.         c->PFX ## _pixels_tab[IDX][ 8] = PFX ## NUM ## _mc02_altivec; \

  921.         c->PFX ## _pixels_tab[IDX][ 9] = PFX ## NUM ## _mc12_altivec; \

  922.         c->PFX ## _pixels_tab[IDX][10] = PFX ## NUM ## _mc22_altivec; \

  923.         c->PFX ## _pixels_tab[IDX][11] = PFX ## NUM ## _mc32_altivec; \

  924.         c->PFX ## _pixels_tab[IDX][12] = PFX ## NUM ## _mc03_altivec; \

  925.         c->PFX ## _pixels_tab[IDX][13] = PFX ## NUM ## _mc13_altivec; \

  926.         c->PFX ## _pixels_tab[IDX][14] = PFX ## NUM ## _mc23_altivec; \

  927.         c->PFX ## _pixels_tab[IDX][15] = PFX ## NUM ## _mc33_altivec

  928. 

  929.         dspfunc(put_h264_qpel, 0, 16);

  930.         dspfunc(avg_h264_qpel, 0, 16);

  931. #undef dspfunc

  932.     }

  933. }