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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 "dsputil_ppc.h"

  25. #include "dsputil_altivec.h"

  26. #include "util_altivec.h"

  27. #include "types_altivec.h"

  28. 

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

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

  31. 

  32. #define OP_U8_ALTIVEC                          PUT_OP_U8_ALTIVEC

  33. #define PREFIX_h264_chroma_mc8_altivec         put_h264_chroma_mc8_altivec

  34. #define PREFIX_no_rnd_vc1_chroma_mc8_altivec   put_no_rnd_vc1_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_no_rnd_vc1_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_no_rnd_vc1_chroma_mc8_altivec   avg_no_rnd_vc1_chroma_mc8_altivec

  57. #define PREFIX_h264_chroma_mc8_num             altivec_avg_h264_chroma_mc8_num

  58. #define PREFIX_h264_qpel16_h_lowpass_altivec   avg_h264_qpel16_h_lowpass_altivec

  59. #define PREFIX_h264_qpel16_h_lowpass_num       altivec_avg_h264_qpel16_h_lowpass_num

  60. #define PREFIX_h264_qpel16_v_lowpass_altivec   avg_h264_qpel16_v_lowpass_altivec

  61. #define PREFIX_h264_qpel16_v_lowpass_num       altivec_avg_h264_qpel16_v_lowpass_num

  62. #define PREFIX_h264_qpel16_hv_lowpass_altivec  avg_h264_qpel16_hv_lowpass_altivec

  63. #define PREFIX_h264_qpel16_hv_lowpass_num      altivec_avg_h264_qpel16_hv_lowpass_num

  64. #include "h264_template_altivec.c"

  65. #undef OP_U8_ALTIVEC

  66. #undef PREFIX_h264_chroma_mc8_altivec

  67. #undef PREFIX_no_rnd_vc1_chroma_mc8_altivec

  68. #undef PREFIX_h264_chroma_mc8_num

  69. #undef PREFIX_h264_qpel16_h_lowpass_altivec

  70. #undef PREFIX_h264_qpel16_h_lowpass_num

  71. #undef PREFIX_h264_qpel16_v_lowpass_altivec

  72. #undef PREFIX_h264_qpel16_v_lowpass_num

  73. #undef PREFIX_h264_qpel16_hv_lowpass_altivec

  74. #undef PREFIX_h264_qpel16_hv_lowpass_num

  75. 

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

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

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

  79. }\

  80. \

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

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

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

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

  85. }\

  86. \

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

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

  89. }\

  90. \

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

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

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

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

  95. }\

  96. \

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

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

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

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

  101. }\

  102. \

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

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

  105. }\

  106. \

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

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

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

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

  111. }\

  112. \

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

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

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

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

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

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

  119. }\

  120. \

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

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

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

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

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

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

  127. }\

  128. \

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

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

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

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

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

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

  135. }\

  136. \

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

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

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

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

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

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

  143. }\

  144. \

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

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

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

  148. }\

  149. \

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

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

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

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

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

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

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

  157. }\

  158. \

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

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

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

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

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

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

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

  166. }\

  167. \

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

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

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

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

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

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

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

  175. }\

  176. \

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

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

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

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

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

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

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

  184. }\

  185. 

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

  187.                                     const uint8_t * src2, int dst_stride,

  188.                                     int src_stride1, int h)

  189. {

  190.     int i;

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

  192. 

  193.     mask_ = vec_lvsl(0, src2);

  194. 

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

  196. 

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

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

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

  200. 

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

  202. 

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

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

  205. 

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

  207. 

  208.         tmp1 = vec_ld(0, dst);

  209.         mask = vec_lvsl(0, dst);

  210.         tmp2 = vec_ld(15, dst);

  211. 

  212.         d = vec_avg(a, b);

  213. 

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

  215. 

  216.         align = vec_lvsr(0, dst);

  217. 

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

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

  220. 

  221.         vec_st(tmp2, 15, dst);

  222.         vec_st(tmp1, 0 , dst);

  223. 

  224.         dst += dst_stride;

  225.     }

  226. }

  227. 

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

  229.                                     const uint8_t * src2, int dst_stride,

  230.                                     int src_stride1, int h)

  231. {

  232.     int i;

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

  234. 

  235.     mask_ = vec_lvsl(0, src2);

  236. 

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

  238. 

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

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

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

  242. 

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

  244. 

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

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

  247. 

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

  249. 

  250.         tmp1 = vec_ld(0, dst);

  251.         mask = vec_lvsl(0, dst);

  252.         tmp2 = vec_ld(15, dst);

  253. 

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

  255. 

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

  257. 

  258.         align = vec_lvsr(0, dst);

  259. 

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

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

  262. 

  263.         vec_st(tmp2, 15, dst);

  264.         vec_st(tmp1, 0 , dst);

  265. 

  266.         dst += dst_stride;

  267.     }

  268. }

  269. 

  270. /* Implemented but could be faster

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

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

  273.  */

  274. 

  275. H264_MC(put_, 16, altivec)

  276. H264_MC(avg_, 16, altivec)

  277. 

  278. 

  279. /****************************************************************************

  280.  * IDCT transform:

  281.  ****************************************************************************/

  282. 

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

  284.     /* 1st stage */                                               \

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

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

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

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

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

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

  291.     /* 2nd stage: output */                                       \

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

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

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

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

  296. 

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

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

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

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

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

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

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

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

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

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

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

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

  309.     b3 = vec_mergel( a1, a3 )

  310. 

  311. #define VEC_LOAD_U8_ADD_S16_STORE_U8(va)                      \

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

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

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

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

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

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

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

  319. 

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

  321. {

  322.     vec_s16 va0, va1, va2, va3;

  323.     vec_s16 vz0, vz1, vz2, vz3;

  324.     vec_s16 vtmp0, vtmp1, vtmp2, vtmp3;

  325.     vec_u8 va_u8;

  326.     vec_u32 va_u32;

  327.     vec_s16 vdst_ss;

  328.     const vec_u16 v6us = vec_splat_u16(6);

  329.     vec_u8 vdst, vdst_orig;

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

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

  332.     LOAD_ZERO;

  333. 

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

  335. 

  336.     vtmp0 = vec_ld(0,block);

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

  338.     vtmp2 = vec_ld(16,block);

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

  340. 

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

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

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

  344. 

  345.     va0 = vec_sra(va0,v6us);

  346.     va1 = vec_sra(va1,v6us);

  347.     va2 = vec_sra(va2,v6us);

  348.     va3 = vec_sra(va3,v6us);

  349. 

  350.     VEC_LOAD_U8_ADD_S16_STORE_U8(va0);

  351.     dst += stride;

  352.     VEC_LOAD_U8_ADD_S16_STORE_U8(va1);

  353.     dst += stride;

  354.     VEC_LOAD_U8_ADD_S16_STORE_U8(va2);

  355.     dst += stride;

  356.     VEC_LOAD_U8_ADD_S16_STORE_U8(va3);

  357. }

  358. 

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  411. }

  412. 

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

  414.     /* unaligned load */                                       \

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

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

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

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

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

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

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

  422.     vec_u8 edgehv;                                           \

  423.     /* unaligned store */                                      \

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

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

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

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

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

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

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

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

  432.  }

  433. 

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

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

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

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

  438. 

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

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

  441. 

  442.     const vec_u16 onev = vec_splat_u16(1);

  443.     const vec_u16 twov = vec_splat_u16(2);

  444.     const vec_u16 sixv = vec_splat_u16(6);

  445. 

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

  447.     LOAD_ZERO;

  448. 

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

  450. 

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

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

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

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

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

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

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

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

  459. 

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

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

  462. 

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

  464. 

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

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

  467. 

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

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

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

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

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

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

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

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

  476. }

  477. 

  478. static av_always_inline void h264_idct_dc_add_internal(uint8_t *dst, DCTELEM *block, int stride, int size)

  479. {

  480.     vec_s16 dc16;

  481.     vec_u8 dcplus, dcminus, v0, v1, v2, v3, aligner;

  482.     LOAD_ZERO;

  483.     DECLARE_ALIGNED_16(int, dc);

  484.     int i;

  485. 

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

  487.     dc16 = vec_splat((vec_s16) vec_lde(0, &dc), 1);

  488. 

  489.     if (size == 4)

  490.         dc16 = vec_sld(dc16, zero_s16v, 8);

  491.     dcplus = vec_packsu(dc16, zero_s16v);

  492.     dcminus = vec_packsu(vec_sub(zero_s16v, dc16), zero_s16v);

  493. 

  494.     aligner = vec_lvsr(0, dst);

  495.     dcplus = vec_perm(dcplus, dcplus, aligner);

  496.     dcminus = vec_perm(dcminus, dcminus, aligner);

  497. 

  498.     for (i = 0; i < size; i += 4) {

  499.         v0 = vec_ld(0, dst+0*stride);

  500.         v1 = vec_ld(0, dst+1*stride);

  501.         v2 = vec_ld(0, dst+2*stride);

  502.         v3 = vec_ld(0, dst+3*stride);

  503. 

  504.         v0 = vec_adds(v0, dcplus);

  505.         v1 = vec_adds(v1, dcplus);

  506.         v2 = vec_adds(v2, dcplus);

  507.         v3 = vec_adds(v3, dcplus);

  508. 

  509.         v0 = vec_subs(v0, dcminus);

  510.         v1 = vec_subs(v1, dcminus);

  511.         v2 = vec_subs(v2, dcminus);

  512.         v3 = vec_subs(v3, dcminus);

  513. 

  514.         vec_st(v0, 0, dst+0*stride);

  515.         vec_st(v1, 0, dst+1*stride);

  516.         vec_st(v2, 0, dst+2*stride);

  517.         vec_st(v3, 0, dst+3*stride);

  518. 

  519.         dst += 4*stride;

  520.     }

  521. }

  522. 

  523. static void h264_idct_dc_add_altivec(uint8_t *dst, DCTELEM *block, int stride)

  524. {

  525.     h264_idct_dc_add_internal(dst, block, stride, 4);

  526. }

  527. 

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

  529. {

  530.     h264_idct_dc_add_internal(dst, block, stride, 8);

  531. }

  532. 

  533. static void ff_h264_idct_add16_altivec(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){

  534.     int i;

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

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

  537.         if(nnz){

  538.             if(nnz==1 && block[i*16]) h264_idct_dc_add_altivec(dst + block_offset[i], block + i*16, stride);

  539.             else                      ff_h264_idct_add_altivec(dst + block_offset[i], block + i*16, stride);

  540.         }

  541.     }

  542. }

  543. 

  544. static void ff_h264_idct_add16intra_altivec(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){

  545.     int i;

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

  547.         if(nnzc[ scan8[i] ]) ff_h264_idct_add_altivec(dst + block_offset[i], block + i*16, stride);

  548.         else if(block[i*16]) h264_idct_dc_add_altivec(dst + block_offset[i], block + i*16, stride);

  549.     }

  550. }

  551. 

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

  553.     int i;

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

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

  556.         if(nnz){

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

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

  559.         }

  560.     }

  561. }

  562. 

  563. static void ff_h264_idct_add8_altivec(uint8_t **dest, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){

  564.     int i;

  565.     for(i=16; i<16+8; i++){

  566.         if(nnzc[ scan8[i] ])

  567.             ff_h264_idct_add_altivec(dest[(i&4)>>2] + block_offset[i], block + i*16, stride);

  568.         else if(block[i*16])

  569.             h264_idct_dc_add_altivec(dest[(i&4)>>2] + block_offset[i], block + i*16, stride);

  570.     }

  571. }

  572. 

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

  574.     register vec_u8 r4;                    \

  575.     register vec_u8 r5;                    \

  576.     register vec_u8 r6;                    \

  577.     register vec_u8 r7;                    \

  578.                                              \

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

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

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

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

  583.                                              \

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

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

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

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

  588. }

  589. 

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

  591.                              register vec_u8 r0, register vec_u8 r1,

  592.                              register vec_u8 r2, register vec_u8 r3) {

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

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

  595.     int int_dst_stride = dst_stride/4;

  596. 

  597.     vec_st(r0, 0, result);

  598.     vec_st(r1, 16, result);

  599.     vec_st(r2, 32, result);

  600.     vec_st(r3, 48, result);

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

  602.     *dst_int = *src_int;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  618. }

  619. 

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

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

  622.     out of unaligned_load() */

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

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

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

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

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

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

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

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

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

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

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

  634.                                                                            \

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

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

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

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

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

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

  641.                                                                            \

  642.     /*Merge first pairs*/                                                  \

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

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

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

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

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

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

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

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

  651.                                                                            \

  652.     /*Merge second pairs*/                                                 \

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

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

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

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

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

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

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

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

  661.                                                                            \

  662.     /*Third merge*/                                                        \

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

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

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

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

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

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

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

  670.                                                                            \

  671.     /*Final merge*/                                                        \

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

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

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

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

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

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

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

  679.                                                                            \

  680. }

  681. 

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

  683. static inline vec_u8 diff_lt_altivec ( register vec_u8 x,

  684.                                          register vec_u8 y,

  685.                                          register vec_u8 a) {

  686. 

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

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

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

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

  691.     return o;

  692. }

  693. 

  694. static inline vec_u8 h264_deblock_mask ( register vec_u8 p0,

  695.                                            register vec_u8 p1,

  696.                                            register vec_u8 q0,

  697.                                            register vec_u8 q1,

  698.                                            register vec_u8 alpha,

  699.                                            register vec_u8 beta) {

  700. 

  701.     register vec_u8 mask;

  702.     register vec_u8 tempmask;

  703. 

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

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

  706.     mask = vec_and(mask, tempmask);

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

  708.     mask = vec_and(mask, tempmask);

  709. 

  710.     return mask;

  711. }

  712. 

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

  714. static inline vec_u8 h264_deblock_q1(register vec_u8 p0,

  715.                                        register vec_u8 p1,

  716.                                        register vec_u8 p2,

  717.                                        register vec_u8 q0,

  718.                                        register vec_u8 tc0) {

  719. 

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

  721.     register vec_u8 temp;

  722.     register vec_u8 uncliped;

  723.     register vec_u8 ones;

  724.     register vec_u8 max;

  725.     register vec_u8 min;

  726.     register vec_u8 newp1;

  727. 

  728.     temp = vec_xor(average, p2);

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

  730.     ones = vec_splat_u8(1);

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

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

  733.     max = vec_adds(p1, tc0);

  734.     min = vec_subs(p1, tc0);

  735.     newp1 = vec_max(min, uncliped);

  736.     newp1 = vec_min(max, newp1);

  737.     return newp1;

  738. }

  739. 

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

  741.                                                                                                   \

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

  743.                                                                                                   \

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

  745.     register vec_u8 q1minus;                                                                    \

  746.     register vec_u8 p0minus;                                                                    \

  747.     register vec_u8 stage1;                                                                     \

  748.     register vec_u8 stage2;                                                                     \

  749.     register vec_u8 vec160;                                                                     \

  750.     register vec_u8 delta;                                                                      \

  751.     register vec_u8 deltaneg;                                                                   \

  752.                                                                                                   \

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  770. }

  771. 

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

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

  774.     register vec_u8 alphavec;                                                              \

  775.     register vec_u8 betavec;                                                               \

  776.     register vec_u8 mask;                                                                  \

  777.     register vec_u8 p1mask;                                                                \

  778.     register vec_u8 q1mask;                                                                \

  779.     register vector signed   char tc0vec;                                                    \

  780.     register vec_u8 finaltc0;                                                              \

  781.     register vec_u8 tc0masked;                                                             \

  782.     register vec_u8 newp1;                                                                 \

  783.     register vec_u8 newq1;                                                                 \

  784.                                                                                              \

  785.     temp[0] = alpha;                                                                         \

  786.     temp[1] = beta;                                                                          \

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

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

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

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

  791.                                                                                              \

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

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

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

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

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

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

  798.                                                                                              \

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

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

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

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

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

  804.     /*end if*/                                                                               \

  805.                                                                                              \

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

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

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

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

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

  811.     /*end if*/                                                                               \

  812.                                                                                              \

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

  814.     p1 = newp1;                                                                              \

  815.     q1 = newq1;                                                                              \

  816. }

  817. 

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

  819. 

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

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

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

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

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

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

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

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

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

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

  830.         vec_st(q0, 0, pix);

  831.         vec_st(q1, stride, pix);

  832.     }

  833. }

  834. 

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

  836. 

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

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

  839.         return;

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

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

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

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

  844. }

  845. 

  846. static av_always_inline

  847. void weight_h264_WxH_altivec(uint8_t *block, int stride, int log2_denom, int weight, int offset, int w, int h)

  848. {

  849.     int y, aligned;

  850.     vec_u8 vblock;

  851.     vec_s16 vtemp, vweight, voffset, v0, v1;

  852.     vec_u16 vlog2_denom;

  853.     DECLARE_ALIGNED_16(int32_t, temp)[4];

  854.     LOAD_ZERO;

  855. 

  856.     offset <<= log2_denom;

  857.     if(log2_denom) offset += 1<<(log2_denom-1);

  858.     temp[0] = log2_denom;

  859.     temp[1] = weight;

  860.     temp[2] = offset;

  861. 

  862.     vtemp = (vec_s16)vec_ld(0, temp);

  863.     vlog2_denom = (vec_u16)vec_splat(vtemp, 1);

  864.     vweight = vec_splat(vtemp, 3);

  865.     voffset = vec_splat(vtemp, 5);

  866.     aligned = !((unsigned long)block & 0xf);

  867. 

  868.     for (y=0; y<h; y++) {

  869.         vblock = vec_ld(0, block);

  870. 

  871.         v0 = (vec_s16)vec_mergeh(zero_u8v, vblock);

  872.         v1 = (vec_s16)vec_mergel(zero_u8v, vblock);

  873. 

  874.         if (w == 16 || aligned) {

  875.             v0 = vec_mladd(v0, vweight, zero_s16v);

  876.             v0 = vec_adds(v0, voffset);

  877.             v0 = vec_sra(v0, vlog2_denom);

  878.         }

  879.         if (w == 16 || !aligned) {

  880.             v1 = vec_mladd(v1, vweight, zero_s16v);

  881.             v1 = vec_adds(v1, voffset);

  882.             v1 = vec_sra(v1, vlog2_denom);

  883.         }

  884.         vblock = vec_packsu(v0, v1);

  885.         vec_st(vblock, 0, block);

  886. 

  887.         block += stride;

  888.     }

  889. }

  890. 

  891. static av_always_inline

  892. void biweight_h264_WxH_altivec(uint8_t *dst, uint8_t *src, int stride, int log2_denom,

  893.                                int weightd, int weights, int offset, int w, int h)

  894. {

  895.     int y, dst_aligned, src_aligned;

  896.     vec_u8 vsrc, vdst;

  897.     vec_s16 vtemp, vweights, vweightd, voffset, v0, v1, v2, v3;

  898.     vec_u16 vlog2_denom;

  899.     DECLARE_ALIGNED_16(int32_t, temp)[4];

  900.     LOAD_ZERO;

  901. 

  902.     offset = ((offset + 1) | 1) << log2_denom;

  903.     temp[0] = log2_denom+1;

  904.     temp[1] = weights;

  905.     temp[2] = weightd;

  906.     temp[3] = offset;

  907. 

  908.     vtemp = (vec_s16)vec_ld(0, temp);

  909.     vlog2_denom = (vec_u16)vec_splat(vtemp, 1);

  910.     vweights = vec_splat(vtemp, 3);

  911.     vweightd = vec_splat(vtemp, 5);

  912.     voffset = vec_splat(vtemp, 7);

  913.     dst_aligned = !((unsigned long)dst & 0xf);

  914.     src_aligned = !((unsigned long)src & 0xf);

  915. 

  916.     for (y=0; y<h; y++) {

  917.         vdst = vec_ld(0, dst);

  918.         vsrc = vec_ld(0, src);

  919. 

  920.         v0 = (vec_s16)vec_mergeh(zero_u8v, vdst);

  921.         v1 = (vec_s16)vec_mergel(zero_u8v, vdst);

  922.         v2 = (vec_s16)vec_mergeh(zero_u8v, vsrc);

  923.         v3 = (vec_s16)vec_mergel(zero_u8v, vsrc);

  924. 

  925.         if (w == 8) {

  926.             if (src_aligned)

  927.                 v3 = v2;

  928.             else

  929.                 v2 = v3;

  930.         }

  931. 

  932.         if (w == 16 || dst_aligned) {

  933.             v0 = vec_mladd(v0, vweightd, zero_s16v);

  934.             v2 = vec_mladd(v2, vweights, zero_s16v);

  935. 

  936.             v0 = vec_adds(v0, voffset);

  937.             v0 = vec_adds(v0, v2);

  938.             v0 = vec_sra(v0, vlog2_denom);

  939.         }

  940.         if (w == 16 || !dst_aligned) {

  941.             v1 = vec_mladd(v1, vweightd, zero_s16v);

  942.             v3 = vec_mladd(v3, vweights, zero_s16v);

  943. 

  944.             v1 = vec_adds(v1, voffset);

  945.             v1 = vec_adds(v1, v3);

  946.             v1 = vec_sra(v1, vlog2_denom);

  947.         }

  948.         vdst = vec_packsu(v0, v1);

  949.         vec_st(vdst, 0, dst);

  950. 

  951.         dst += stride;

  952.         src += stride;

  953.     }

  954. }

  955. 

  956. #define H264_WEIGHT(W,H) \

  957. static void ff_weight_h264_pixels ## W ## x ## H ## _altivec(uint8_t *block, int stride, int log2_denom, int weight, int offset){ \

  958.     weight_h264_WxH_altivec(block, stride, log2_denom, weight, offset, W, H); \

  959. }\

  960. static void ff_biweight_h264_pixels ## W ## x ## H ## _altivec(uint8_t *dst, uint8_t *src, int stride, int log2_denom, int weightd, int weights, int offset){ \

  961.     biweight_h264_WxH_altivec(dst, src, stride, log2_denom, weightd, weights, offset, W, H); \

  962. }

  963. 

  964. H264_WEIGHT(16,16)

  965. H264_WEIGHT(16, 8)

  966. H264_WEIGHT( 8,16)

  967. H264_WEIGHT( 8, 8)

  968. H264_WEIGHT( 8, 4)

  969. 

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

  971. 

  972.     if (has_altivec()) {

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

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

  975.         c->put_no_rnd_vc1_chroma_pixels_tab[0] = put_no_rnd_vc1_chroma_mc8_altivec;

  976.         c->avg_no_rnd_vc1_chroma_pixels_tab[0] = avg_no_rnd_vc1_chroma_mc8_altivec;

  977.         c->h264_idct_add = ff_h264_idct_add_altivec;

  978.         c->h264_idct_add8 = ff_h264_idct_add8_altivec;

  979.         c->h264_idct_add16 = ff_h264_idct_add16_altivec;

  980.         c->h264_idct_add16intra = ff_h264_idct_add16intra_altivec;

  981.         c->h264_idct_dc_add= h264_idct_dc_add_altivec;

  982.         c->h264_idct8_dc_add = ff_h264_idct8_dc_add_altivec;

  983.         c->h264_idct8_add = ff_h264_idct8_add_altivec;

  984.         c->h264_idct8_add4 = ff_h264_idct8_add4_altivec;

  985.         c->h264_v_loop_filter_luma= h264_v_loop_filter_luma_altivec;

  986.         c->h264_h_loop_filter_luma= h264_h_loop_filter_luma_altivec;

  987. 

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

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

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

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

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

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

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

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

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

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

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

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

  1000.         c->PFX ## _pixels_tab[IDX][11] = PFX ## NUM ## _mc32_altivec; \

  1001.         c->PFX ## _pixels_tab[IDX][12] = PFX ## NUM ## _mc03_altivec; \

  1002.         c->PFX ## _pixels_tab[IDX][13] = PFX ## NUM ## _mc13_altivec; \

  1003.         c->PFX ## _pixels_tab[IDX][14] = PFX ## NUM ## _mc23_altivec; \

  1004.         c->PFX ## _pixels_tab[IDX][15] = PFX ## NUM ## _mc33_altivec

  1005. 

  1006.         dspfunc(put_h264_qpel, 0, 16);

  1007.         dspfunc(avg_h264_qpel, 0, 16);

  1008. #undef dspfunc

  1009. 

  1010.         c->weight_h264_pixels_tab[0] = ff_weight_h264_pixels16x16_altivec;

  1011.         c->weight_h264_pixels_tab[1] = ff_weight_h264_pixels16x8_altivec;

  1012.         c->weight_h264_pixels_tab[2] = ff_weight_h264_pixels8x16_altivec;

  1013.         c->weight_h264_pixels_tab[3] = ff_weight_h264_pixels8x8_altivec;

  1014.         c->weight_h264_pixels_tab[4] = ff_weight_h264_pixels8x4_altivec;

  1015.         c->biweight_h264_pixels_tab[0] = ff_biweight_h264_pixels16x16_altivec;

  1016.         c->biweight_h264_pixels_tab[1] = ff_biweight_h264_pixels16x8_altivec;

  1017.         c->biweight_h264_pixels_tab[2] = ff_biweight_h264_pixels8x16_altivec;

  1018.         c->biweight_h264_pixels_tab[3] = ff_biweight_h264_pixels8x8_altivec;

  1019.         c->biweight_h264_pixels_tab[4] = ff_biweight_h264_pixels8x4_altivec;

  1020.     }

  1021. }