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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. 

  23. #include "gcc_fixes.h"

  24. 

  25. #include "dsputil_ppc.h"

  26. #include "dsputil_altivec.h"

  27. #include "util_altivec.h"

  28. #include "types_altivec.h"

  29. 

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

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

  32. 

  33. #define OP_U8_ALTIVEC                          PUT_OP_U8_ALTIVEC

  34. #define PREFIX_h264_chroma_mc8_altivec         put_h264_chroma_mc8_altivec

  35. #define PREFIX_h264_chroma_mc8_num             altivec_put_h264_chroma_mc8_num

  36. #define PREFIX_h264_qpel16_h_lowpass_altivec   put_h264_qpel16_h_lowpass_altivec

  37. #define PREFIX_h264_qpel16_h_lowpass_num       altivec_put_h264_qpel16_h_lowpass_num

  38. #define PREFIX_h264_qpel16_v_lowpass_altivec   put_h264_qpel16_v_lowpass_altivec

  39. #define PREFIX_h264_qpel16_v_lowpass_num       altivec_put_h264_qpel16_v_lowpass_num

  40. #define PREFIX_h264_qpel16_hv_lowpass_altivec  put_h264_qpel16_hv_lowpass_altivec

  41. #define PREFIX_h264_qpel16_hv_lowpass_num      altivec_put_h264_qpel16_hv_lowpass_num

  42. #include "h264_template_altivec.c"

  43. #undef OP_U8_ALTIVEC

  44. #undef PREFIX_h264_chroma_mc8_altivec

  45. #undef PREFIX_h264_chroma_mc8_num

  46. #undef PREFIX_h264_qpel16_h_lowpass_altivec

  47. #undef PREFIX_h264_qpel16_h_lowpass_num

  48. #undef PREFIX_h264_qpel16_v_lowpass_altivec

  49. #undef PREFIX_h264_qpel16_v_lowpass_num

  50. #undef PREFIX_h264_qpel16_hv_lowpass_altivec

  51. #undef PREFIX_h264_qpel16_hv_lowpass_num

  52. 

  53. #define OP_U8_ALTIVEC                          AVG_OP_U8_ALTIVEC

  54. #define PREFIX_h264_chroma_mc8_altivec         avg_h264_chroma_mc8_altivec

  55. #define PREFIX_h264_chroma_mc8_num             altivec_avg_h264_chroma_mc8_num

  56. #define PREFIX_h264_qpel16_h_lowpass_altivec   avg_h264_qpel16_h_lowpass_altivec

  57. #define PREFIX_h264_qpel16_h_lowpass_num       altivec_avg_h264_qpel16_h_lowpass_num

  58. #define PREFIX_h264_qpel16_v_lowpass_altivec   avg_h264_qpel16_v_lowpass_altivec

  59. #define PREFIX_h264_qpel16_v_lowpass_num       altivec_avg_h264_qpel16_v_lowpass_num

  60. #define PREFIX_h264_qpel16_hv_lowpass_altivec  avg_h264_qpel16_hv_lowpass_altivec

  61. #define PREFIX_h264_qpel16_hv_lowpass_num      altivec_avg_h264_qpel16_hv_lowpass_num

  62. #include "h264_template_altivec.c"

  63. #undef OP_U8_ALTIVEC

  64. #undef PREFIX_h264_chroma_mc8_altivec

  65. #undef PREFIX_h264_chroma_mc8_num

  66. #undef PREFIX_h264_qpel16_h_lowpass_altivec

  67. #undef PREFIX_h264_qpel16_h_lowpass_num

  68. #undef PREFIX_h264_qpel16_v_lowpass_altivec

  69. #undef PREFIX_h264_qpel16_v_lowpass_num

  70. #undef PREFIX_h264_qpel16_hv_lowpass_altivec

  71. #undef PREFIX_h264_qpel16_hv_lowpass_num

  72. 

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

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

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

  76. }\

  77. \

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

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

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

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

  82. }\

  83. \

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

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

  86. }\

  87. \

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

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

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

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

  92. }\

  93. \

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

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

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

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

  98. }\

  99. \

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

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

  102. }\

  103. \

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

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

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

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

  108. }\

  109. \

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

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

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

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

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

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

  116. }\

  117. \

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

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

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

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

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

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

  124. }\

  125. \

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

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

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

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

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

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

  132. }\

  133. \

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

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

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

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

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

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

  140. }\

  141. \

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

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

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

  145. }\

  146. \

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

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

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

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

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

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

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

  154. }\

  155. \

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

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

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

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

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

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

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

  163. }\

  164. \

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

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

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

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

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

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

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

  172. }\

  173. \

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

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

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

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

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

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

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

  181. }\

  182. 

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

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

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

  186.                         {((8 - x) * (8 - y)),

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

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

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

  190.     register int i;

  191.     vec_u8_t fperm;

  192.     const vec_s32_t vABCD = vec_ld(0, ABCD);

  193.     const vec_s16_t vA = vec_splat((vec_s16_t)vABCD, 1);

  194.     const vec_s16_t vB = vec_splat((vec_s16_t)vABCD, 3);

  195.     const vec_s16_t vC = vec_splat((vec_s16_t)vABCD, 5);

  196.     const vec_s16_t vD = vec_splat((vec_s16_t)vABCD, 7);

  197.     LOAD_ZERO;

  198.     const vec_s16_t v28ss = vec_sub(vec_sl(vec_splat_s16(1),vec_splat_u16(5)),vec_splat_s16(4));

  199.     const vec_u16_t v6us  = vec_splat_u16(6);

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

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

  202. 

  203.     vec_u8_t vsrcAuc, vsrcBuc, vsrcperm0, vsrcperm1;

  204.     vec_u8_t vsrc0uc, vsrc1uc;

  205.     vec_s16_t vsrc0ssH, vsrc1ssH;

  206.     vec_u8_t vsrcCuc, vsrc2uc, vsrc3uc;

  207.     vec_s16_t vsrc2ssH, vsrc3ssH, psum;

  208.     vec_u8_t vdst, ppsum, fsum;

  209. 

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

  211.         fperm = (vec_u8_t){0x10, 0x11, 0x12, 0x13,

  212.                            0x14, 0x15, 0x16, 0x17,

  213.                            0x08, 0x09, 0x0A, 0x0B,

  214.                            0x0C, 0x0D, 0x0E, 0x0F};

  215.     } else {

  216.         fperm = (vec_u8_t){0x00, 0x01, 0x02, 0x03,

  217.                            0x04, 0x05, 0x06, 0x07,

  218.                            0x18, 0x19, 0x1A, 0x1B,

  219.                            0x1C, 0x1D, 0x1E, 0x1F};

  220.     }

  221. 

  222.     vsrcAuc = vec_ld(0, src);

  223. 

  224.     if (loadSecond)

  225.         vsrcBuc = vec_ld(16, src);

  226.     vsrcperm0 = vec_lvsl(0, src);

  227.     vsrcperm1 = vec_lvsl(1, src);

  228. 

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

  230.     if (reallyBadAlign)

  231.         vsrc1uc = vsrcBuc;

  232.     else

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

  234. 

  235.     vsrc0ssH = (vec_s16_t)vec_mergeh(zero_u8v, (vec_u8_t)vsrc0uc);

  236.     vsrc1ssH = (vec_s16_t)vec_mergeh(zero_u8v, (vec_u8_t)vsrc1uc);

  237. 

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

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

  240. 

  241. 

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

  243. 

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

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

  246. 

  247.             vsrc2ssH = (vec_s16_t)vec_mergeh(zero_u8v, (vec_u8_t)vsrc2uc);

  248.             vsrc3ssH = (vec_s16_t)vec_mergeh(zero_u8v, (vec_u8_t)vsrc3uc);

  249. 

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

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

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

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

  254.             psum = vec_add(v28ss, psum);

  255.             psum = vec_sra(psum, v6us);

  256. 

  257.             vdst = vec_ld(0, dst);

  258.             ppsum = (vec_u8_t)vec_packsu(psum, psum);

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

  260. 

  261.             vec_st(fsum, 0, dst);

  262. 

  263.             vsrc0ssH = vsrc2ssH;

  264.             vsrc1ssH = vsrc3ssH;

  265. 

  266.             dst += stride;

  267.             src += stride;

  268.         }

  269.     } else {

  270.         vec_u8_t vsrcDuc;

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

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

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

  274. 

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

  276.             if (reallyBadAlign)

  277.                 vsrc3uc = vsrcDuc;

  278.             else

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

  280. 

  281.             vsrc2ssH = (vec_s16_t)vec_mergeh(zero_u8v, (vec_u8_t)vsrc2uc);

  282.             vsrc3ssH = (vec_s16_t)vec_mergeh(zero_u8v, (vec_u8_t)vsrc3uc);

  283. 

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

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

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

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

  288.             psum = vec_add(v28ss, psum);

  289.             psum = vec_sr(psum, v6us);

  290. 

  291.             vdst = vec_ld(0, dst);

  292.             ppsum = (vec_u8_t)vec_pack(psum, psum);

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

  294. 

  295.             vec_st(fsum, 0, dst);

  296. 

  297.             vsrc0ssH = vsrc2ssH;

  298.             vsrc1ssH = vsrc3ssH;

  299. 

  300.             dst += stride;

  301.             src += stride;

  302.         }

  303.     }

  304. }

  305. 

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

  307.                                     const uint8_t * src2, int dst_stride,

  308.                                     int src_stride1, int h)

  309. {

  310.     int i;

  311.     vec_u8_t a, b, d, tmp1, tmp2, mask, mask_, edges, align;

  312. 

  313.     mask_ = vec_lvsl(0, src2);

  314. 

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

  316. 

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

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

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

  320. 

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

  322. 

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

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

  325. 

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

  327. 

  328.         tmp1 = vec_ld(0, dst);

  329.         mask = vec_lvsl(0, dst);

  330.         tmp2 = vec_ld(15, dst);

  331. 

  332.         d = vec_avg(a, b);

  333. 

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

  335. 

  336.         align = vec_lvsr(0, dst);

  337. 

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

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

  340. 

  341.         vec_st(tmp2, 15, dst);

  342.         vec_st(tmp1, 0 , dst);

  343. 

  344.         dst += dst_stride;

  345.     }

  346. }

  347. 

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

  349.                                     const uint8_t * src2, int dst_stride,

  350.                                     int src_stride1, int h)

  351. {

  352.     int i;

  353.     vec_u8_t a, b, d, tmp1, tmp2, mask, mask_, edges, align;

  354. 

  355.     mask_ = vec_lvsl(0, src2);

  356. 

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

  358. 

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

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

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

  362. 

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

  364. 

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

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

  367. 

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

  369. 

  370.         tmp1 = vec_ld(0, dst);

  371.         mask = vec_lvsl(0, dst);

  372.         tmp2 = vec_ld(15, dst);

  373. 

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

  375. 

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

  377. 

  378.         align = vec_lvsr(0, dst);

  379. 

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

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

  382. 

  383.         vec_st(tmp2, 15, dst);

  384.         vec_st(tmp1, 0 , dst);

  385. 

  386.         dst += dst_stride;

  387.     }

  388. }

  389. 

  390. /* Implemented but could be faster

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

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

  393.  */

  394. 

  395. H264_MC(put_, 16, altivec)

  396. H264_MC(avg_, 16, altivec)

  397. 

  398. 

  399. /****************************************************************************

  400.  * IDCT transform:

  401.  ****************************************************************************/

  402. 

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

  404.     /* 1st stage */                                               \

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

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

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

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

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

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

  411.     /* 2nd stage: output */                                       \

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

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

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

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

  416. 

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

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

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

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

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

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

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

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

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

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

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

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

  429.     b3 = vec_mergel( a1, a3 )

  430. 

  431. #define VEC_LOAD_U8_ADD_S16_STORE_U8(va)                      \

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

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

  434.     vdst_ss = (vec_s16_t) vec_mergeh(zero_u8v, vdst);         \

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

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

  437.     va_u32 = vec_splat((vec_u32_t)va_u8, 0);                  \

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

  439. 

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

  441. {

  442.     vec_s16_t va0, va1, va2, va3;

  443.     vec_s16_t vz0, vz1, vz2, vz3;

  444.     vec_s16_t vtmp0, vtmp1, vtmp2, vtmp3;

  445.     vec_u8_t va_u8;

  446.     vec_u32_t va_u32;

  447.     vec_s16_t vdst_ss;

  448.     const vec_u16_t v6us = vec_splat_u16(6);

  449.     vec_u8_t vdst, vdst_orig;

  450.     vec_u8_t vdst_mask = vec_lvsl(0, dst);

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

  452.     LOAD_ZERO;

  453. 

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

  455. 

  456.     vtmp0 = vec_ld(0,block);

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

  458.     vtmp2 = vec_ld(16,block);

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

  460. 

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

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

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

  464. 

  465.     va0 = vec_sra(va0,v6us);

  466.     va1 = vec_sra(va1,v6us);

  467.     va2 = vec_sra(va2,v6us);

  468.     va3 = vec_sra(va3,v6us);

  469. 

  470.     VEC_LOAD_U8_ADD_S16_STORE_U8(va0);

  471.     dst += stride;

  472.     VEC_LOAD_U8_ADD_S16_STORE_U8(va1);

  473.     dst += stride;

  474.     VEC_LOAD_U8_ADD_S16_STORE_U8(va2);

  475.     dst += stride;

  476.     VEC_LOAD_U8_ADD_S16_STORE_U8(va3);

  477. }

  478. 

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

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

  481.     vec_s16_t a0v = vec_add(s0, s4);    \

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

  483.     vec_s16_t a2v = vec_sub(s0, s4);    \

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

  485.     vec_s16_t a4v = vec_sub(vec_sra(s2, onev), s6);    \

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

  487.     vec_s16_t a6v = vec_add(vec_sra(s6, onev), s2);    \

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

  489.     vec_s16_t b0v = vec_add(a0v, a6v);  \

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

  491.     vec_s16_t b2v = vec_add(a2v, a4v);  \

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

  493.     vec_s16_t b4v = vec_sub(a2v, a4v);  \

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

  495.     vec_s16_t b6v = vec_sub(a0v, a6v);  \

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

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

  498.     vec_s16_t a1v = vec_sub( vec_sub(s5, s3), vec_add(s7, vec_sra(s7, onev)) ); \

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

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

  501.     vec_s16_t a3v = vec_sub( vec_add(s7, s1), vec_add(s3, vec_sra(s3, onev)) );\

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

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

  504.     vec_s16_t a5v = vec_add( vec_sub(s7, s1), vec_add(s5, vec_sra(s5, onev)) );\

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

  506.     vec_s16_t a7v = vec_add( vec_add(s5, s3), vec_add(s1, vec_sra(s1, onev)) );\

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

  508.     vec_s16_t b1v = vec_add( vec_sra(a7v, twov), a1v); \

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

  510.     vec_s16_t b3v = vec_add(a3v, vec_sra(a5v, twov)); \

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

  512.     vec_s16_t b5v = vec_sub( vec_sra(a3v, twov), a5v); \

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

  514.     vec_s16_t b7v = vec_sub( a7v, vec_sra(a1v, twov)); \

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  531. }

  532. 

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

  534.     /* unaligned load */                                       \

  535.     vec_u8_t hv = vec_ld( 0, dest );                           \

  536.     vec_u8_t lv = vec_ld( 7, dest );                           \

  537.     vec_u8_t dstv   = vec_perm( hv, lv, (vec_u8_t)perm_ldv );  \

  538.     vec_s16_t idct_sh6 = vec_sra(idctv, sixv);                 \

  539.     vec_u16_t dst16 = (vec_u16_t)vec_mergeh(zero_u8v, dstv);   \

  540.     vec_s16_t idstsum = vec_adds(idct_sh6, (vec_s16_t)dst16);  \

  541.     vec_u8_t idstsum8 = vec_packsu(zero_s16v, idstsum);        \

  542.     vec_u8_t edgehv;                                           \

  543.     /* unaligned store */                                      \

  544.     vec_u8_t bodyv  = vec_perm( idstsum8, idstsum8, perm_stv );\

  545.     vec_u8_t edgelv = vec_perm( sel, zero_u8v, perm_stv );     \

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

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

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

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

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

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

  552.  }

  553. 

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

  555.     vec_s16_t s0, s1, s2, s3, s4, s5, s6, s7;

  556.     vec_s16_t d0, d1, d2, d3, d4, d5, d6, d7;

  557.     vec_s16_t idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7;

  558. 

  559.     vec_u8_t perm_ldv = vec_lvsl(0, dst);

  560.     vec_u8_t perm_stv = vec_lvsr(8, dst);

  561. 

  562.     const vec_u16_t onev = vec_splat_u16(1);

  563.     const vec_u16_t twov = vec_splat_u16(2);

  564.     const vec_u16_t sixv = vec_splat_u16(6);

  565. 

  566.     const vec_u8_t sel = (vec_u8_t) {0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1};

  567.     LOAD_ZERO;

  568. 

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

  570. 

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

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

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

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

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

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

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

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

  579. 

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

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

  582. 

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

  584. 

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

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

  587. 

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

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

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

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

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

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

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

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

  596. }

  597. 

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

  599.     register vec_u8_t r4;                    \

  600.     register vec_u8_t r5;                    \

  601.     register vec_u8_t r6;                    \

  602.     register vec_u8_t r7;                    \

  603.                                              \

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

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

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

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

  608.                                              \

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

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

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

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

  613. }

  614. 

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

  616.                              register vec_u8_t r0, register vec_u8_t r1,

  617.                              register vec_u8_t r2, register vec_u8_t r3) {

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

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

  620.     int int_dst_stride = dst_stride/4;

  621. 

  622.     vec_st(r0, 0, result);

  623.     vec_st(r1, 16, result);

  624.     vec_st(r2, 32, result);

  625.     vec_st(r3, 48, result);

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

  627.     *dst_int = *src_int;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  643. }

  644. 

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

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

  647.     out of unaligned_load() */

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

  649.     register vec_u8_t r0  = unaligned_load(0,             src);            \

  650.     register vec_u8_t r1  = unaligned_load(   src_stride, src);            \

  651.     register vec_u8_t r2  = unaligned_load(2* src_stride, src);            \

  652.     register vec_u8_t r3  = unaligned_load(3* src_stride, src);            \

  653.     register vec_u8_t r4  = unaligned_load(4* src_stride, src);            \

  654.     register vec_u8_t r5  = unaligned_load(5* src_stride, src);            \

  655.     register vec_u8_t r6  = unaligned_load(6* src_stride, src);            \

  656.     register vec_u8_t r7  = unaligned_load(7* src_stride, src);            \

  657.     register vec_u8_t r14 = unaligned_load(14*src_stride, src);            \

  658.     register vec_u8_t r15 = unaligned_load(15*src_stride, src);            \

  659.                                                                            \

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

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

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

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

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

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

  666.                                                                            \

  667.     /*Merge first pairs*/                                                  \

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

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

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

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

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

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

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

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

  676.                                                                            \

  677.     /*Merge second pairs*/                                                 \

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

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

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

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

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

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

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

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

  686.                                                                            \

  687.     /*Third merge*/                                                        \

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

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

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

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

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

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

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

  695.                                                                            \

  696.     /*Final merge*/                                                        \

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

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

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

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

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

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

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

  704.                                                                            \

  705. }

  706. 

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

  708. static inline vec_u8_t diff_lt_altivec ( register vec_u8_t x,

  709.                                          register vec_u8_t y,

  710.                                          register vec_u8_t a) {

  711. 

  712.     register vec_u8_t diff = vec_subs(x, y);

  713.     register vec_u8_t diffneg = vec_subs(y, x);

  714.     register vec_u8_t o = vec_or(diff, diffneg); /* |x-y| */

  715.     o = (vec_u8_t)vec_cmplt(o, a);

  716.     return o;

  717. }

  718. 

  719. static inline vec_u8_t h264_deblock_mask ( register vec_u8_t p0,

  720.                                            register vec_u8_t p1,

  721.                                            register vec_u8_t q0,

  722.                                            register vec_u8_t q1,

  723.                                            register vec_u8_t alpha,

  724.                                            register vec_u8_t beta) {

  725. 

  726.     register vec_u8_t mask;

  727.     register vec_u8_t tempmask;

  728. 

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

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

  731.     mask = vec_and(mask, tempmask);

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

  733.     mask = vec_and(mask, tempmask);

  734. 

  735.     return mask;

  736. }

  737. 

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

  739. static inline vec_u8_t h264_deblock_q1(register vec_u8_t p0,

  740.                                        register vec_u8_t p1,

  741.                                        register vec_u8_t p2,

  742.                                        register vec_u8_t q0,

  743.                                        register vec_u8_t tc0) {

  744. 

  745.     register vec_u8_t average = vec_avg(p0, q0);

  746.     register vec_u8_t temp;

  747.     register vec_u8_t uncliped;

  748.     register vec_u8_t ones;

  749.     register vec_u8_t max;

  750.     register vec_u8_t min;

  751.     register vec_u8_t newp1;

  752. 

  753.     temp = vec_xor(average, p2);

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

  755.     ones = vec_splat_u8(1);

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

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

  758.     max = vec_adds(p1, tc0);

  759.     min = vec_subs(p1, tc0);

  760.     newp1 = vec_max(min, uncliped);

  761.     newp1 = vec_min(max, newp1);

  762.     return newp1;

  763. }

  764. 

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

  766.                                                                                                   \

  767.     const vec_u8_t A0v = vec_sl(vec_splat_u8(10), vec_splat_u8(4));                               \

  768.                                                                                                   \

  769.     register vec_u8_t pq0bit = vec_xor(p0,q0);                                                    \

  770.     register vec_u8_t q1minus;                                                                    \

  771.     register vec_u8_t p0minus;                                                                    \

  772.     register vec_u8_t stage1;                                                                     \

  773.     register vec_u8_t stage2;                                                                     \

  774.     register vec_u8_t vec160;                                                                     \

  775.     register vec_u8_t delta;                                                                      \

  776.     register vec_u8_t deltaneg;                                                                   \

  777.                                                                                                   \

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  795. }

  796. 

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

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

  799.     register vec_u8_t alphavec;                                                              \

  800.     register vec_u8_t betavec;                                                               \

  801.     register vec_u8_t mask;                                                                  \

  802.     register vec_u8_t p1mask;                                                                \

  803.     register vec_u8_t q1mask;                                                                \

  804.     register vector signed   char tc0vec;                                                    \

  805.     register vec_u8_t finaltc0;                                                              \

  806.     register vec_u8_t tc0masked;                                                             \

  807.     register vec_u8_t newp1;                                                                 \

  808.     register vec_u8_t newq1;                                                                 \

  809.                                                                                              \

  810.     temp[0] = alpha;                                                                         \

  811.     temp[1] = beta;                                                                          \

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

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

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

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

  816.                                                                                              \

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

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

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

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

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

  822.     finaltc0 = vec_and((vec_u8_t)tc0vec, mask);     /* tc = tc0 */                           \

  823.                                                                                              \

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

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

  826.     tc0masked = vec_and(p1mask, (vec_u8_t)tc0vec);                                           \

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

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

  829.     /*end if*/                                                                               \

  830.                                                                                              \

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

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

  833.     tc0masked = vec_and(q1mask, (vec_u8_t)tc0vec);                                           \

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

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

  836.     /*end if*/                                                                               \

  837.                                                                                              \

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

  839.     p1 = newp1;                                                                              \

  840.     q1 = newq1;                                                                              \

  841. }

  842. 

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

  844. 

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

  846.         register vec_u8_t p2 = vec_ld(-3*stride, pix);

  847.         register vec_u8_t p1 = vec_ld(-2*stride, pix);

  848.         register vec_u8_t p0 = vec_ld(-1*stride, pix);

  849.         register vec_u8_t q0 = vec_ld(0, pix);

  850.         register vec_u8_t q1 = vec_ld(stride, pix);

  851.         register vec_u8_t q2 = vec_ld(2*stride, pix);

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

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

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

  855.         vec_st(q0, 0, pix);

  856.         vec_st(q1, stride, pix);

  857.     }

  858. }

  859. 

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

  861. 

  862.     register vec_u8_t line0, line1, line2, line3, line4, line5;

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

  864.         return;

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

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

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

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

  869. }

  870. 

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

  872. 

  873.     if (has_altivec()) {

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

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

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

  877.         c->h264_idct_add = ff_h264_idct_add_altivec;

  878.         c->h264_idct8_add = ff_h264_idct8_add_altivec;

  879.         c->h264_v_loop_filter_luma= h264_v_loop_filter_luma_altivec;

  880.         c->h264_h_loop_filter_luma= h264_h_loop_filter_luma_altivec;

  881. 

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  899. 

  900.         dspfunc(put_h264_qpel, 0, 16);

  901.         dspfunc(avg_h264_qpel, 0, 16);

  902. #undef dspfunc

  903.     }

  904. }