falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
44689 Commits
32 Branches
850MB
Tree: c5714b51aa
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from 'c5714b51aa'
${ noResults }
FFmpeg/libavcodec/ppc/vc1dsp_altivec.c

359 lines
12KB
Raw Blame History 

  1. /*

  2.  * VC-1 and WMV3 decoder - DSP functions AltiVec-optimized

  3.  * Copyright (c) 2006 Konstantin Shishkov

  4.  *

  5.  * This file is part of Libav.

  6.  *

  7.  * Libav is free software; you can redistribute it and/or

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

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

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

  11.  *

  12.  * Libav is distributed in the hope that it will be useful,

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

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

  15.  * Lesser General Public License for more details.

  16.  *

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

  18.  * License along with Libav; if not, write to the Free Software

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

  20.  */

  21. 

  22. #include "config.h"

  23. 

  24. #include "libavutil/attributes.h"

  25. #include "libavutil/cpu.h"

  26. #include "libavutil/ppc/cpu.h"

  27. #include "libavutil/ppc/util_altivec.h"

  28. 

  29. #include "libavcodec/vc1dsp.h"

  30. 

  31. #if HAVE_ALTIVEC && HAVE_BIGENDIAN

  32. 

  33. // main steps of 8x8 transform

  34. #define STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_rnd) \

  35. do { \

  36.     t0 = vec_sl(vec_add(s0, s4), vec_2); \

  37.     t0 = vec_add(vec_sl(t0, vec_1), t0); \

  38.     t0 = vec_add(t0, vec_rnd); \

  39.     t1 = vec_sl(vec_sub(s0, s4), vec_2); \

  40.     t1 = vec_add(vec_sl(t1, vec_1), t1); \

  41.     t1 = vec_add(t1, vec_rnd); \

  42.     t2 = vec_add(vec_sl(s6, vec_2), vec_sl(s6, vec_1)); \

  43.     t2 = vec_add(t2, vec_sl(s2, vec_4)); \

  44.     t3 = vec_add(vec_sl(s2, vec_2), vec_sl(s2, vec_1)); \

  45.     t3 = vec_sub(t3, vec_sl(s6, vec_4)); \

  46.     t4 = vec_add(t0, t2); \

  47.     t5 = vec_add(t1, t3); \

  48.     t6 = vec_sub(t1, t3); \

  49.     t7 = vec_sub(t0, t2); \

  50. \

  51.     t0 = vec_sl(vec_add(s1, s3), vec_4); \

  52.     t0 = vec_add(t0, vec_sl(s5, vec_3)); \

  53.     t0 = vec_add(t0, vec_sl(s7, vec_2)); \

  54.     t0 = vec_add(t0, vec_sub(s5, s3)); \

  55. \

  56.     t1 = vec_sl(vec_sub(s1, s5), vec_4); \

  57.     t1 = vec_sub(t1, vec_sl(s7, vec_3)); \

  58.     t1 = vec_sub(t1, vec_sl(s3, vec_2)); \

  59.     t1 = vec_sub(t1, vec_add(s1, s7)); \

  60. \

  61.     t2 = vec_sl(vec_sub(s7, s3), vec_4); \

  62.     t2 = vec_add(t2, vec_sl(s1, vec_3)); \

  63.     t2 = vec_add(t2, vec_sl(s5, vec_2)); \

  64.     t2 = vec_add(t2, vec_sub(s1, s7)); \

  65. \

  66.     t3 = vec_sl(vec_sub(s5, s7), vec_4); \

  67.     t3 = vec_sub(t3, vec_sl(s3, vec_3)); \

  68.     t3 = vec_add(t3, vec_sl(s1, vec_2)); \

  69.     t3 = vec_sub(t3, vec_add(s3, s5)); \

  70. \

  71.     s0 = vec_add(t4, t0); \

  72.     s1 = vec_add(t5, t1); \

  73.     s2 = vec_add(t6, t2); \

  74.     s3 = vec_add(t7, t3); \

  75.     s4 = vec_sub(t7, t3); \

  76.     s5 = vec_sub(t6, t2); \

  77.     s6 = vec_sub(t5, t1); \

  78.     s7 = vec_sub(t4, t0); \

  79. }while(0)

  80. 

  81. #define SHIFT_HOR8(s0, s1, s2, s3, s4, s5, s6, s7) \

  82. do { \

  83.     s0 = vec_sra(s0, vec_3); \

  84.     s1 = vec_sra(s1, vec_3); \

  85.     s2 = vec_sra(s2, vec_3); \

  86.     s3 = vec_sra(s3, vec_3); \

  87.     s4 = vec_sra(s4, vec_3); \

  88.     s5 = vec_sra(s5, vec_3); \

  89.     s6 = vec_sra(s6, vec_3); \

  90.     s7 = vec_sra(s7, vec_3); \

  91. }while(0)

  92. 

  93. #define SHIFT_VERT8(s0, s1, s2, s3, s4, s5, s6, s7) \

  94. do { \

  95.     s0 = vec_sra(s0, vec_7); \

  96.     s1 = vec_sra(s1, vec_7); \

  97.     s2 = vec_sra(s2, vec_7); \

  98.     s3 = vec_sra(s3, vec_7); \

  99.     s4 = vec_sra(vec_add(s4, vec_1s), vec_7); \

  100.     s5 = vec_sra(vec_add(s5, vec_1s), vec_7); \

  101.     s6 = vec_sra(vec_add(s6, vec_1s), vec_7); \

  102.     s7 = vec_sra(vec_add(s7, vec_1s), vec_7); \

  103. }while(0)

  104. 

  105. /* main steps of 4x4 transform */

  106. #define STEP4(s0, s1, s2, s3, vec_rnd) \

  107. do { \

  108.     t1 = vec_add(vec_sl(s0, vec_4), s0); \

  109.     t1 = vec_add(t1, vec_rnd); \

  110.     t2 = vec_add(vec_sl(s2, vec_4), s2); \

  111.     t0 = vec_add(t1, t2); \

  112.     t1 = vec_sub(t1, t2); \

  113.     t3 = vec_sl(vec_sub(s3, s1), vec_1); \

  114.     t3 = vec_add(t3, vec_sl(t3, vec_2)); \

  115.     t2 = vec_add(t3, vec_sl(s1, vec_5)); \

  116.     t3 = vec_add(t3, vec_sl(s3, vec_3)); \

  117.     t3 = vec_add(t3, vec_sl(s3, vec_2)); \

  118.     s0 = vec_add(t0, t2); \

  119.     s1 = vec_sub(t1, t3); \

  120.     s2 = vec_add(t1, t3); \

  121.     s3 = vec_sub(t0, t2); \

  122. }while (0)

  123. 

  124. #define SHIFT_HOR4(s0, s1, s2, s3) \

  125.     s0 = vec_sra(s0, vec_3); \

  126.     s1 = vec_sra(s1, vec_3); \

  127.     s2 = vec_sra(s2, vec_3); \

  128.     s3 = vec_sra(s3, vec_3);

  129. 

  130. #define SHIFT_VERT4(s0, s1, s2, s3) \

  131.     s0 = vec_sra(s0, vec_7); \

  132.     s1 = vec_sra(s1, vec_7); \

  133.     s2 = vec_sra(s2, vec_7); \

  134.     s3 = vec_sra(s3, vec_7);

  135. 

  136. /** Do inverse transform on 8x8 block

  137. */

  138. static void vc1_inv_trans_8x8_altivec(int16_t block[64])

  139. {

  140.     vector signed short src0, src1, src2, src3, src4, src5, src6, src7;

  141.     vector signed int s0, s1, s2, s3, s4, s5, s6, s7;

  142.     vector signed int s8, s9, sA, sB, sC, sD, sE, sF;

  143.     vector signed int t0, t1, t2, t3, t4, t5, t6, t7;

  144.     const vector signed int vec_64 = vec_sl(vec_splat_s32(4), vec_splat_u32(4));

  145.     const vector unsigned int vec_7 = vec_splat_u32(7);

  146.     const vector unsigned int vec_4 = vec_splat_u32(4);

  147.     const vector  signed int vec_4s = vec_splat_s32(4);

  148.     const vector unsigned int vec_3 = vec_splat_u32(3);

  149.     const vector unsigned int vec_2 = vec_splat_u32(2);

  150.     const vector  signed int vec_1s = vec_splat_s32(1);

  151.     const vector unsigned int vec_1 = vec_splat_u32(1);

  152. 

  153.     src0 = vec_ld(  0, block);

  154.     src1 = vec_ld( 16, block);

  155.     src2 = vec_ld( 32, block);

  156.     src3 = vec_ld( 48, block);

  157.     src4 = vec_ld( 64, block);

  158.     src5 = vec_ld( 80, block);

  159.     src6 = vec_ld( 96, block);

  160.     src7 = vec_ld(112, block);

  161. 

  162.     s0 = vec_unpackl(src0);

  163.     s1 = vec_unpackl(src1);

  164.     s2 = vec_unpackl(src2);

  165.     s3 = vec_unpackl(src3);

  166.     s4 = vec_unpackl(src4);

  167.     s5 = vec_unpackl(src5);

  168.     s6 = vec_unpackl(src6);

  169.     s7 = vec_unpackl(src7);

  170.     s8 = vec_unpackh(src0);

  171.     s9 = vec_unpackh(src1);

  172.     sA = vec_unpackh(src2);

  173.     sB = vec_unpackh(src3);

  174.     sC = vec_unpackh(src4);

  175.     sD = vec_unpackh(src5);

  176.     sE = vec_unpackh(src6);

  177.     sF = vec_unpackh(src7);

  178.     STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_4s);

  179.     SHIFT_HOR8(s0, s1, s2, s3, s4, s5, s6, s7);

  180.     STEP8(s8, s9, sA, sB, sC, sD, sE, sF, vec_4s);

  181.     SHIFT_HOR8(s8, s9, sA, sB, sC, sD, sE, sF);

  182.     src0 = vec_pack(s8, s0);

  183.     src1 = vec_pack(s9, s1);

  184.     src2 = vec_pack(sA, s2);

  185.     src3 = vec_pack(sB, s3);

  186.     src4 = vec_pack(sC, s4);

  187.     src5 = vec_pack(sD, s5);

  188.     src6 = vec_pack(sE, s6);

  189.     src7 = vec_pack(sF, s7);

  190.     TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7);

  191. 

  192.     s0 = vec_unpackl(src0);

  193.     s1 = vec_unpackl(src1);

  194.     s2 = vec_unpackl(src2);

  195.     s3 = vec_unpackl(src3);

  196.     s4 = vec_unpackl(src4);

  197.     s5 = vec_unpackl(src5);

  198.     s6 = vec_unpackl(src6);

  199.     s7 = vec_unpackl(src7);

  200.     s8 = vec_unpackh(src0);

  201.     s9 = vec_unpackh(src1);

  202.     sA = vec_unpackh(src2);

  203.     sB = vec_unpackh(src3);

  204.     sC = vec_unpackh(src4);

  205.     sD = vec_unpackh(src5);

  206.     sE = vec_unpackh(src6);

  207.     sF = vec_unpackh(src7);

  208.     STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_64);

  209.     SHIFT_VERT8(s0, s1, s2, s3, s4, s5, s6, s7);

  210.     STEP8(s8, s9, sA, sB, sC, sD, sE, sF, vec_64);

  211.     SHIFT_VERT8(s8, s9, sA, sB, sC, sD, sE, sF);

  212.     src0 = vec_pack(s8, s0);

  213.     src1 = vec_pack(s9, s1);

  214.     src2 = vec_pack(sA, s2);

  215.     src3 = vec_pack(sB, s3);

  216.     src4 = vec_pack(sC, s4);

  217.     src5 = vec_pack(sD, s5);

  218.     src6 = vec_pack(sE, s6);

  219.     src7 = vec_pack(sF, s7);

  220. 

  221.     vec_st(src0,  0, block);

  222.     vec_st(src1, 16, block);

  223.     vec_st(src2, 32, block);

  224.     vec_st(src3, 48, block);

  225.     vec_st(src4, 64, block);

  226.     vec_st(src5, 80, block);

  227.     vec_st(src6, 96, block);

  228.     vec_st(src7,112, block);

  229. }

  230. 

  231. /** Do inverse transform on 8x4 part of block

  232. */

  233. static void vc1_inv_trans_8x4_altivec(uint8_t *dest, ptrdiff_t stride,

  234.                                       int16_t *block)

  235. {

  236.     vector signed short src0, src1, src2, src3, src4, src5, src6, src7;

  237.     vector signed int s0, s1, s2, s3, s4, s5, s6, s7;

  238.     vector signed int s8, s9, sA, sB, sC, sD, sE, sF;

  239.     vector signed int t0, t1, t2, t3, t4, t5, t6, t7;

  240.     const vector signed int vec_64 = vec_sl(vec_splat_s32(4), vec_splat_u32(4));

  241.     const vector unsigned int vec_7 = vec_splat_u32(7);

  242.     const vector unsigned int vec_5 = vec_splat_u32(5);

  243.     const vector unsigned int vec_4 = vec_splat_u32(4);

  244.     const vector  signed int vec_4s = vec_splat_s32(4);

  245.     const vector unsigned int vec_3 = vec_splat_u32(3);

  246.     const vector unsigned int vec_2 = vec_splat_u32(2);

  247.     const vector unsigned int vec_1 = vec_splat_u32(1);

  248.     vector unsigned char tmp;

  249.     vector signed short tmp2, tmp3;

  250.     vector unsigned char perm0, perm1, p0, p1, p;

  251. 

  252.     src0 = vec_ld(  0, block);

  253.     src1 = vec_ld( 16, block);

  254.     src2 = vec_ld( 32, block);

  255.     src3 = vec_ld( 48, block);

  256.     src4 = vec_ld( 64, block);

  257.     src5 = vec_ld( 80, block);

  258.     src6 = vec_ld( 96, block);

  259.     src7 = vec_ld(112, block);

  260. 

  261.     TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7);

  262.     s0 = vec_unpackl(src0);

  263.     s1 = vec_unpackl(src1);

  264.     s2 = vec_unpackl(src2);

  265.     s3 = vec_unpackl(src3);

  266.     s4 = vec_unpackl(src4);

  267.     s5 = vec_unpackl(src5);

  268.     s6 = vec_unpackl(src6);

  269.     s7 = vec_unpackl(src7);

  270.     s8 = vec_unpackh(src0);

  271.     s9 = vec_unpackh(src1);

  272.     sA = vec_unpackh(src2);

  273.     sB = vec_unpackh(src3);

  274.     sC = vec_unpackh(src4);

  275.     sD = vec_unpackh(src5);

  276.     sE = vec_unpackh(src6);

  277.     sF = vec_unpackh(src7);

  278.     STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_4s);

  279.     SHIFT_HOR8(s0, s1, s2, s3, s4, s5, s6, s7);

  280.     STEP8(s8, s9, sA, sB, sC, sD, sE, sF, vec_4s);

  281.     SHIFT_HOR8(s8, s9, sA, sB, sC, sD, sE, sF);

  282.     src0 = vec_pack(s8, s0);

  283.     src1 = vec_pack(s9, s1);

  284.     src2 = vec_pack(sA, s2);

  285.     src3 = vec_pack(sB, s3);

  286.     src4 = vec_pack(sC, s4);

  287.     src5 = vec_pack(sD, s5);

  288.     src6 = vec_pack(sE, s6);

  289.     src7 = vec_pack(sF, s7);

  290.     TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7);

  291. 

  292.     s0 = vec_unpackh(src0);

  293.     s1 = vec_unpackh(src1);

  294.     s2 = vec_unpackh(src2);

  295.     s3 = vec_unpackh(src3);

  296.     s8 = vec_unpackl(src0);

  297.     s9 = vec_unpackl(src1);

  298.     sA = vec_unpackl(src2);

  299.     sB = vec_unpackl(src3);

  300.     STEP4(s0, s1, s2, s3, vec_64);

  301.     SHIFT_VERT4(s0, s1, s2, s3);

  302.     STEP4(s8, s9, sA, sB, vec_64);

  303.     SHIFT_VERT4(s8, s9, sA, sB);

  304.     src0 = vec_pack(s0, s8);

  305.     src1 = vec_pack(s1, s9);

  306.     src2 = vec_pack(s2, sA);

  307.     src3 = vec_pack(s3, sB);

  308. 

  309.     p0 = vec_lvsl (0, dest);

  310.     p1 = vec_lvsl (stride, dest);

  311.     p = vec_splat_u8 (-1);

  312.     perm0 = vec_mergeh (p, p0);

  313.     perm1 = vec_mergeh (p, p1);

  314. 

  315. #define ADD(dest,src,perm)                                              \

  316.     /* *(uint64_t *)&tmp = *(uint64_t *)dest; */                        \

  317.     tmp = vec_ld (0, dest);                                             \

  318.     tmp2 = (vector signed short)vec_perm (tmp, vec_splat_u8(0), perm);  \

  319.     tmp3 = vec_adds (tmp2, src);                                        \

  320.     tmp = vec_packsu (tmp3, tmp3);                                      \

  321.     vec_ste ((vector unsigned int)tmp, 0, (unsigned int *)dest);        \

  322.     vec_ste ((vector unsigned int)tmp, 4, (unsigned int *)dest);

  323. 

  324.     ADD (dest, src0, perm0)      dest += stride;

  325.     ADD (dest, src1, perm1)      dest += stride;

  326.     ADD (dest, src2, perm0)      dest += stride;

  327.     ADD (dest, src3, perm1)

  328. }

  329. 

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

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

  332. 

  333. #define OP_U8_ALTIVEC                          PUT_OP_U8_ALTIVEC

  334. #define PREFIX_no_rnd_vc1_chroma_mc8_altivec   put_no_rnd_vc1_chroma_mc8_altivec

  335. #include "h264chroma_template.c"

  336. #undef OP_U8_ALTIVEC

  337. #undef PREFIX_no_rnd_vc1_chroma_mc8_altivec

  338. 

  339. #define OP_U8_ALTIVEC                          AVG_OP_U8_ALTIVEC

  340. #define PREFIX_no_rnd_vc1_chroma_mc8_altivec   avg_no_rnd_vc1_chroma_mc8_altivec

  341. #include "h264chroma_template.c"

  342. #undef OP_U8_ALTIVEC

  343. #undef PREFIX_no_rnd_vc1_chroma_mc8_altivec

  344. 

  345. #endif /* HAVE_ALTIVEC && HAVE_BIGENDIAN */

  346. 

  347. av_cold void ff_vc1dsp_init_ppc(VC1DSPContext *dsp)

  348. {

  349. #if HAVE_ALTIVEC && HAVE_BIGENDIAN

  350.     if (!PPC_ALTIVEC(av_get_cpu_flags()))

  351.         return;

  352. 

  353.     dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_altivec;

  354.     dsp->vc1_inv_trans_8x4 = vc1_inv_trans_8x4_altivec;

  355.     dsp->put_no_rnd_vc1_chroma_pixels_tab[0] = put_no_rnd_vc1_chroma_mc8_altivec;

  356.     dsp->avg_no_rnd_vc1_chroma_pixels_tab[0] = avg_no_rnd_vc1_chroma_mc8_altivec;

  357. #endif /* HAVE_ALTIVEC && HAVE_BIGENDIAN */

  358. }