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FFmpeg/libavcodec/vp8dsp.c

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  1. /*

  2.  * Copyright (C) 2010 David Conrad

  3.  * Copyright (C) 2010 Ronald S. Bultje

  4.  * Copyright (C) 2014 Peter Ross

  5.  *

  6.  * This file is part of FFmpeg.

  7.  *

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

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

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

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

  12.  *

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

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

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

  16.  * Lesser General Public License for more details.

  17.  *

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

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

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

  21.  */

  22. 

  23. /**

  24.  * @file

  25.  * VP8 compatible video decoder

  26.  */

  27. 

  28. #include "libavutil/common.h"

  29. #include "libavutil/intreadwrite.h"

  30. 

  31. #include "mathops.h"

  32. #include "vp8dsp.h"

  33. 

  34. #define MK_IDCT_DC_ADD4_C(name)                                               \

  35. static void name ## _idct_dc_add4uv_c(uint8_t *dst, int16_t block[4][16],     \

  36.                                       ptrdiff_t stride)                       \

  37. {                                                                             \

  38.     name ## _idct_dc_add_c(dst + stride * 0 + 0, block[0], stride);           \

  39.     name ## _idct_dc_add_c(dst + stride * 0 + 4, block[1], stride);           \

  40.     name ## _idct_dc_add_c(dst + stride * 4 + 0, block[2], stride);           \

  41.     name ## _idct_dc_add_c(dst + stride * 4 + 4, block[3], stride);           \

  42. }                                                                             \

  43.                                                                               \

  44. static void name ## _idct_dc_add4y_c(uint8_t *dst, int16_t block[4][16],      \

  45.                                      ptrdiff_t stride)                        \

  46. {                                                                             \

  47.     name ## _idct_dc_add_c(dst +  0, block[0], stride);                       \

  48.     name ## _idct_dc_add_c(dst +  4, block[1], stride);                       \

  49.     name ## _idct_dc_add_c(dst +  8, block[2], stride);                       \

  50.     name ## _idct_dc_add_c(dst + 12, block[3], stride);                       \

  51. }

  52. 

  53. #if CONFIG_VP7_DECODER

  54. static void vp7_luma_dc_wht_c(int16_t block[4][4][16], int16_t dc[16])

  55. {

  56.     int i, a1, b1, c1, d1;

  57.     int16_t tmp[16];

  58. 

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

  60.         a1 = (dc[i * 4 + 0] + dc[i * 4 + 2]) * 23170;

  61.         b1 = (dc[i * 4 + 0] - dc[i * 4 + 2]) * 23170;

  62.         c1 = dc[i * 4 + 1] * 12540 - dc[i * 4 + 3] * 30274;

  63.         d1 = dc[i * 4 + 1] * 30274 + dc[i * 4 + 3] * 12540;

  64.         tmp[i * 4 + 0] = (a1 + d1) >> 14;

  65.         tmp[i * 4 + 3] = (a1 - d1) >> 14;

  66.         tmp[i * 4 + 1] = (b1 + c1) >> 14;

  67.         tmp[i * 4 + 2] = (b1 - c1) >> 14;

  68.     }

  69. 

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

  71.         a1 = (tmp[i + 0] + tmp[i + 8]) * 23170;

  72.         b1 = (tmp[i + 0] - tmp[i + 8]) * 23170;

  73.         c1 = tmp[i + 4] * 12540 - tmp[i + 12] * 30274;

  74.         d1 = tmp[i + 4] * 30274 + tmp[i + 12] * 12540;

  75.         AV_ZERO64(dc + i * 4);

  76.         block[0][i][0] = (a1 + d1 + 0x20000) >> 18;

  77.         block[3][i][0] = (a1 - d1 + 0x20000) >> 18;

  78.         block[1][i][0] = (b1 + c1 + 0x20000) >> 18;

  79.         block[2][i][0] = (b1 - c1 + 0x20000) >> 18;

  80.     }

  81. }

  82. 

  83. static void vp7_luma_dc_wht_dc_c(int16_t block[4][4][16], int16_t dc[16])

  84. {

  85.     int i, val = (23170 * (23170 * dc[0] >> 14) + 0x20000) >> 18;

  86.     dc[0] = 0;

  87. 

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

  89.         block[i][0][0] = val;

  90.         block[i][1][0] = val;

  91.         block[i][2][0] = val;

  92.         block[i][3][0] = val;

  93.     }

  94. }

  95. 

  96. static void vp7_idct_add_c(uint8_t *dst, int16_t block[16], ptrdiff_t stride)

  97. {

  98.     int i, a1, b1, c1, d1;

  99.     int16_t tmp[16];

  100. 

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

  102.         a1 = (block[i * 4 + 0] + block[i * 4 + 2]) * 23170;

  103.         b1 = (block[i * 4 + 0] - block[i * 4 + 2]) * 23170;

  104.         c1 = block[i * 4 + 1] * 12540 - block[i * 4 + 3] * 30274;

  105.         d1 = block[i * 4 + 1] * 30274 + block[i * 4 + 3] * 12540;

  106.         AV_ZERO64(block + i * 4);

  107.         tmp[i * 4 + 0] = (a1 + d1) >> 14;

  108.         tmp[i * 4 + 3] = (a1 - d1) >> 14;

  109.         tmp[i * 4 + 1] = (b1 + c1) >> 14;

  110.         tmp[i * 4 + 2] = (b1 - c1) >> 14;

  111.     }

  112. 

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

  114.         a1 = (tmp[i + 0] + tmp[i + 8]) * 23170;

  115.         b1 = (tmp[i + 0] - tmp[i + 8]) * 23170;

  116.         c1 = tmp[i + 4] * 12540 - tmp[i + 12] * 30274;

  117.         d1 = tmp[i + 4] * 30274 + tmp[i + 12] * 12540;

  118.         dst[0 * stride + i] = av_clip_uint8(dst[0 * stride + i] +

  119.                                             ((a1 + d1 + 0x20000) >> 18));

  120.         dst[3 * stride + i] = av_clip_uint8(dst[3 * stride + i] +

  121.                                             ((a1 - d1 + 0x20000) >> 18));

  122.         dst[1 * stride + i] = av_clip_uint8(dst[1 * stride + i] +

  123.                                             ((b1 + c1 + 0x20000) >> 18));

  124.         dst[2 * stride + i] = av_clip_uint8(dst[2 * stride + i] +

  125.                                             ((b1 - c1 + 0x20000) >> 18));

  126.     }

  127. }

  128. 

  129. static void vp7_idct_dc_add_c(uint8_t *dst, int16_t block[16], ptrdiff_t stride)

  130. {

  131.     int i, dc = (23170 * (23170 * block[0] >> 14) + 0x20000) >> 18;

  132.     block[0] = 0;

  133. 

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

  135.         dst[0] = av_clip_uint8(dst[0] + dc);

  136.         dst[1] = av_clip_uint8(dst[1] + dc);

  137.         dst[2] = av_clip_uint8(dst[2] + dc);

  138.         dst[3] = av_clip_uint8(dst[3] + dc);

  139.         dst   += stride;

  140.     }

  141. }

  142. 

  143. MK_IDCT_DC_ADD4_C(vp7)

  144. #endif /* CONFIG_VP7_DECODER */

  145. 

  146. // TODO: Maybe add dequant

  147. #if CONFIG_VP8_DECODER

  148. static void vp8_luma_dc_wht_c(int16_t block[4][4][16], int16_t dc[16])

  149. {

  150.     int i, t0, t1, t2, t3;

  151. 

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

  153.         t0 = dc[0 * 4 + i] + dc[3 * 4 + i];

  154.         t1 = dc[1 * 4 + i] + dc[2 * 4 + i];

  155.         t2 = dc[1 * 4 + i] - dc[2 * 4 + i];

  156.         t3 = dc[0 * 4 + i] - dc[3 * 4 + i];

  157. 

  158.         dc[0 * 4 + i] = t0 + t1;

  159.         dc[1 * 4 + i] = t3 + t2;

  160.         dc[2 * 4 + i] = t0 - t1;

  161.         dc[3 * 4 + i] = t3 - t2;

  162.     }

  163. 

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

  165.         t0 = dc[i * 4 + 0] + dc[i * 4 + 3] + 3; // rounding

  166.         t1 = dc[i * 4 + 1] + dc[i * 4 + 2];

  167.         t2 = dc[i * 4 + 1] - dc[i * 4 + 2];

  168.         t3 = dc[i * 4 + 0] - dc[i * 4 + 3] + 3; // rounding

  169.         AV_ZERO64(dc + i * 4);

  170. 

  171.         block[i][0][0] = (t0 + t1) >> 3;

  172.         block[i][1][0] = (t3 + t2) >> 3;

  173.         block[i][2][0] = (t0 - t1) >> 3;

  174.         block[i][3][0] = (t3 - t2) >> 3;

  175.     }

  176. }

  177. 

  178. static void vp8_luma_dc_wht_dc_c(int16_t block[4][4][16], int16_t dc[16])

  179. {

  180.     int i, val = (dc[0] + 3) >> 3;

  181.     dc[0] = 0;

  182. 

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

  184.         block[i][0][0] = val;

  185.         block[i][1][0] = val;

  186.         block[i][2][0] = val;

  187.         block[i][3][0] = val;

  188.     }

  189. }

  190. 

  191. #define MUL_20091(a) ((((a) * 20091) >> 16) + (a))

  192. #define MUL_35468(a)  (((a) * 35468) >> 16)

  193. 

  194. static void vp8_idct_add_c(uint8_t *dst, int16_t block[16], ptrdiff_t stride)

  195. {

  196.     int i, t0, t1, t2, t3;

  197.     int16_t tmp[16];

  198. 

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

  200.         t0 = block[0 * 4 + i] + block[2 * 4 + i];

  201.         t1 = block[0 * 4 + i] - block[2 * 4 + i];

  202.         t2 = MUL_35468(block[1 * 4 + i]) - MUL_20091(block[3 * 4 + i]);

  203.         t3 = MUL_20091(block[1 * 4 + i]) + MUL_35468(block[3 * 4 + i]);

  204.         block[0 * 4 + i] = 0;

  205.         block[1 * 4 + i] = 0;

  206.         block[2 * 4 + i] = 0;

  207.         block[3 * 4 + i] = 0;

  208. 

  209.         tmp[i * 4 + 0] = t0 + t3;

  210.         tmp[i * 4 + 1] = t1 + t2;

  211.         tmp[i * 4 + 2] = t1 - t2;

  212.         tmp[i * 4 + 3] = t0 - t3;

  213.     }

  214. 

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

  216.         t0 = tmp[0 * 4 + i] + tmp[2 * 4 + i];

  217.         t1 = tmp[0 * 4 + i] - tmp[2 * 4 + i];

  218.         t2 = MUL_35468(tmp[1 * 4 + i]) - MUL_20091(tmp[3 * 4 + i]);

  219.         t3 = MUL_20091(tmp[1 * 4 + i]) + MUL_35468(tmp[3 * 4 + i]);

  220. 

  221.         dst[0] = av_clip_uint8(dst[0] + ((t0 + t3 + 4) >> 3));

  222.         dst[1] = av_clip_uint8(dst[1] + ((t1 + t2 + 4) >> 3));

  223.         dst[2] = av_clip_uint8(dst[2] + ((t1 - t2 + 4) >> 3));

  224.         dst[3] = av_clip_uint8(dst[3] + ((t0 - t3 + 4) >> 3));

  225.         dst   += stride;

  226.     }

  227. }

  228. 

  229. static void vp8_idct_dc_add_c(uint8_t *dst, int16_t block[16], ptrdiff_t stride)

  230. {

  231.     int i, dc = (block[0] + 4) >> 3;

  232.     block[0] = 0;

  233. 

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

  235.         dst[0] = av_clip_uint8(dst[0] + dc);

  236.         dst[1] = av_clip_uint8(dst[1] + dc);

  237.         dst[2] = av_clip_uint8(dst[2] + dc);

  238.         dst[3] = av_clip_uint8(dst[3] + dc);

  239.         dst   += stride;

  240.     }

  241. }

  242. 

  243. MK_IDCT_DC_ADD4_C(vp8)

  244. #endif /* CONFIG_VP8_DECODER */

  245. 

  246. // because I like only having two parameters to pass functions...

  247. #define LOAD_PIXELS                                                           \

  248.     int av_unused p3 = p[-4 * stride];                                        \

  249.     int av_unused p2 = p[-3 * stride];                                        \

  250.     int av_unused p1 = p[-2 * stride];                                        \

  251.     int av_unused p0 = p[-1 * stride];                                        \

  252.     int av_unused q0 = p[ 0 * stride];                                        \

  253.     int av_unused q1 = p[ 1 * stride];                                        \

  254.     int av_unused q2 = p[ 2 * stride];                                        \

  255.     int av_unused q3 = p[ 3 * stride];

  256. 

  257. #define clip_int8(n) (cm[(n) + 0x80] - 0x80)

  258. 

  259. static av_always_inline void filter_common(uint8_t *p, ptrdiff_t stride,

  260.                                            int is4tap, int is_vp7)

  261. {

  262.     LOAD_PIXELS

  263.     int a, f1, f2;

  264.     const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;

  265. 

  266.     a = 3 * (q0 - p0);

  267. 

  268.     if (is4tap)

  269.         a += clip_int8(p1 - q1);

  270. 

  271.     a = clip_int8(a);

  272. 

  273.     // We deviate from the spec here with c(a+3) >> 3

  274.     // since that's what libvpx does.

  275.     f1 = FFMIN(a + 4, 127) >> 3;

  276. 

  277.     if (is_vp7)

  278.         f2 = f1 - ((a & 7) == 4);

  279.     else

  280.         f2 = FFMIN(a + 3, 127) >> 3;

  281. 

  282.     // Despite what the spec says, we do need to clamp here to

  283.     // be bitexact with libvpx.

  284.     p[-1 * stride] = cm[p0 + f2];

  285.     p[ 0 * stride] = cm[q0 - f1];

  286. 

  287.     // only used for _inner on blocks without high edge variance

  288.     if (!is4tap) {

  289.         a              = (f1 + 1) >> 1;

  290.         p[-2 * stride] = cm[p1 + a];

  291.         p[ 1 * stride] = cm[q1 - a];

  292.     }

  293. }

  294. 

  295. static av_always_inline void vp7_filter_common(uint8_t *p, ptrdiff_t stride,

  296.                                                int is4tap)

  297. {

  298.     filter_common(p, stride, is4tap, IS_VP7);

  299. }

  300. 

  301. static av_always_inline void vp8_filter_common(uint8_t *p, ptrdiff_t stride,

  302.                                                int is4tap)

  303. {

  304.     filter_common(p, stride, is4tap, IS_VP8);

  305. }

  306. 

  307. static av_always_inline int vp7_simple_limit(uint8_t *p, ptrdiff_t stride,

  308.                                              int flim)

  309. {

  310.     LOAD_PIXELS

  311.     return FFABS(p0 - q0) <= flim;

  312. }

  313. 

  314. static av_always_inline int vp8_simple_limit(uint8_t *p, ptrdiff_t stride,

  315.                                              int flim)

  316. {

  317.     LOAD_PIXELS

  318.     return 2 * FFABS(p0 - q0) + (FFABS(p1 - q1) >> 1) <= flim;

  319. }

  320. 

  321. /**

  322.  * E - limit at the macroblock edge

  323.  * I - limit for interior difference

  324.  */

  325. #define NORMAL_LIMIT(vpn)                                                     \

  326. static av_always_inline int vp ## vpn ## _normal_limit(uint8_t *p,            \

  327.                                                        ptrdiff_t stride,      \

  328.                                                        int E, int I)          \

  329. {                                                                             \

  330.     LOAD_PIXELS                                                               \

  331.     return vp ## vpn ## _simple_limit(p, stride, E) &&                        \

  332.            FFABS(p3 - p2) <= I && FFABS(p2 - p1) <= I &&                      \

  333.            FFABS(p1 - p0) <= I && FFABS(q3 - q2) <= I &&                      \

  334.            FFABS(q2 - q1) <= I && FFABS(q1 - q0) <= I;                        \

  335. }

  336. 

  337. NORMAL_LIMIT(7)

  338. NORMAL_LIMIT(8)

  339. 

  340. // high edge variance

  341. static av_always_inline int hev(uint8_t *p, ptrdiff_t stride, int thresh)

  342. {

  343.     LOAD_PIXELS

  344.     return FFABS(p1 - p0) > thresh || FFABS(q1 - q0) > thresh;

  345. }

  346. 

  347. static av_always_inline void filter_mbedge(uint8_t *p, ptrdiff_t stride)

  348. {

  349.     int a0, a1, a2, w;

  350.     const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;

  351. 

  352.     LOAD_PIXELS

  353. 

  354.     w = clip_int8(p1 - q1);

  355.     w = clip_int8(w + 3 * (q0 - p0));

  356. 

  357.     a0 = (27 * w + 63) >> 7;

  358.     a1 = (18 * w + 63) >> 7;

  359.     a2 =  (9 * w + 63) >> 7;

  360. 

  361.     p[-3 * stride] = cm[p2 + a2];

  362.     p[-2 * stride] = cm[p1 + a1];

  363.     p[-1 * stride] = cm[p0 + a0];

  364.     p[ 0 * stride] = cm[q0 - a0];

  365.     p[ 1 * stride] = cm[q1 - a1];

  366.     p[ 2 * stride] = cm[q2 - a2];

  367. }

  368. 

  369. #define LOOP_FILTER(vpn, dir, size, stridea, strideb, maybe_inline)           \

  370. static maybe_inline                                                           \

  371. void vpn ## _ ## dir ## _loop_filter ## size ## _c(uint8_t *dst,              \

  372.                                                    ptrdiff_t stride,          \

  373.                                                    int flim_E, int flim_I,    \

  374.                                                    int hev_thresh)            \

  375. {                                                                             \

  376.     int i;                                                                    \

  377.     for (i = 0; i < size; i++)                                                \

  378.         if (vpn ## _normal_limit(dst + i * stridea, strideb,                  \

  379.                                  flim_E, flim_I)) {                           \

  380.             if (hev(dst + i * stridea, strideb, hev_thresh))                  \

  381.                 vpn ## _filter_common(dst + i * stridea, strideb, 1);         \

  382.             else                                                              \

  383.                 filter_mbedge(dst + i * stridea, strideb);                    \

  384.         }                                                                     \

  385. }                                                                             \

  386.                                                                               \

  387. static maybe_inline                                                           \

  388. void vpn ## _ ## dir ## _loop_filter ## size ## _inner_c(uint8_t *dst,        \

  389.                                                          ptrdiff_t stride,    \

  390.                                                          int flim_E,          \

  391.                                                          int flim_I,          \

  392.                                                          int hev_thresh)      \

  393. {                                                                             \

  394.     int i;                                                                    \

  395.     for (i = 0; i < size; i++)                                                \

  396.         if (vpn ## _normal_limit(dst + i * stridea, strideb,                  \

  397.                                  flim_E, flim_I)) {                           \

  398.             int hv = hev(dst + i * stridea, strideb, hev_thresh);             \

  399.             if (hv)                                                           \

  400.                 vpn ## _filter_common(dst + i * stridea, strideb, 1);         \

  401.             else                                                              \

  402.                 vpn ## _filter_common(dst + i * stridea, strideb, 0);         \

  403.         }                                                                     \

  404. }

  405. 

  406. #define UV_LOOP_FILTER(vpn, dir, stridea, strideb)                            \

  407. LOOP_FILTER(vpn, dir, 8, stridea, strideb, av_always_inline)                  \

  408. static void vpn ## _ ## dir ## _loop_filter8uv_c(uint8_t *dstU,               \

  409.                                                  uint8_t *dstV,               \

  410.                                                  ptrdiff_t stride, int fE,    \

  411.                                                  int fI, int hev_thresh)      \

  412. {                                                                             \

  413.     vpn ## _ ## dir ## _loop_filter8_c(dstU, stride, fE, fI, hev_thresh);     \

  414.     vpn ## _ ## dir ## _loop_filter8_c(dstV, stride, fE, fI, hev_thresh);     \

  415. }                                                                             \

  416.                                                                               \

  417. static void vpn ## _ ## dir ## _loop_filter8uv_inner_c(uint8_t *dstU,         \

  418.                                                        uint8_t *dstV,         \

  419.                                                        ptrdiff_t stride,      \

  420.                                                        int fE, int fI,        \

  421.                                                        int hev_thresh)        \

  422. {                                                                             \

  423.     vpn ## _ ## dir ## _loop_filter8_inner_c(dstU, stride, fE, fI,            \

  424.                                              hev_thresh);                     \

  425.     vpn ## _ ## dir ## _loop_filter8_inner_c(dstV, stride, fE, fI,            \

  426.                                              hev_thresh);                     \

  427. }

  428. 

  429. #define LOOP_FILTER_SIMPLE(vpn)                                               \

  430. static void vpn ## _v_loop_filter_simple_c(uint8_t *dst, ptrdiff_t stride,    \

  431.                                            int flim)                          \

  432. {                                                                             \

  433.     int i;                                                                    \

  434.     for (i = 0; i < 16; i++)                                                  \

  435.         if (vpn ## _simple_limit(dst + i, stride, flim))                      \

  436.             vpn ## _filter_common(dst + i, stride, 1);                        \

  437. }                                                                             \

  438.                                                                               \

  439. static void vpn ## _h_loop_filter_simple_c(uint8_t *dst, ptrdiff_t stride,    \

  440.                                            int flim)                          \

  441. {                                                                             \

  442.     int i;                                                                    \

  443.     for (i = 0; i < 16; i++)                                                  \

  444.         if (vpn ## _simple_limit(dst + i * stride, 1, flim))                  \

  445.             vpn ## _filter_common(dst + i * stride, 1, 1);                    \

  446. }

  447. 

  448. #define LOOP_FILTERS(vpn)                \

  449.     LOOP_FILTER(vpn, v, 16, 1, stride, ) \

  450.     LOOP_FILTER(vpn, h, 16, stride, 1, ) \

  451.     UV_LOOP_FILTER(vpn, v, 1, stride)    \

  452.     UV_LOOP_FILTER(vpn, h, stride, 1)    \

  453.     LOOP_FILTER_SIMPLE(vpn)              \

  454. 

  455. static const uint8_t subpel_filters[7][6] = {

  456.     { 0,  6, 123,  12,  1, 0 },

  457.     { 2, 11, 108,  36,  8, 1 },

  458.     { 0,  9,  93,  50,  6, 0 },

  459.     { 3, 16,  77,  77, 16, 3 },

  460.     { 0,  6,  50,  93,  9, 0 },

  461.     { 1,  8,  36, 108, 11, 2 },

  462.     { 0,  1,  12, 123,  6, 0 },

  463. };

  464. 

  465. #define PUT_PIXELS(WIDTH)                                                     \

  466. static void put_vp8_pixels ## WIDTH ## _c(uint8_t *dst, ptrdiff_t dststride,  \

  467.                                           uint8_t *src, ptrdiff_t srcstride,  \

  468.                                           int h, int x, int y)                \

  469. {                                                                             \

  470.     int i;                                                                    \

  471.     for (i = 0; i < h; i++, dst += dststride, src += srcstride)               \

  472.         memcpy(dst, src, WIDTH);                                              \

  473. }

  474. 

  475. PUT_PIXELS(16)

  476. PUT_PIXELS(8)

  477. PUT_PIXELS(4)

  478. 

  479. #define FILTER_6TAP(src, F, stride)                                           \

  480.     cm[(F[2] * src[x + 0 * stride] - F[1] * src[x - 1 * stride] +             \

  481.         F[0] * src[x - 2 * stride] + F[3] * src[x + 1 * stride] -             \

  482.         F[4] * src[x + 2 * stride] + F[5] * src[x + 3 * stride] + 64) >> 7]

  483. 

  484. #define FILTER_4TAP(src, F, stride)                                           \

  485.     cm[(F[2] * src[x + 0 * stride] - F[1] * src[x - 1 * stride] +             \

  486.         F[3] * src[x + 1 * stride] - F[4] * src[x + 2 * stride] + 64) >> 7]

  487. 

  488. #define VP8_EPEL_H(SIZE, TAPS)                                                \

  489. static void put_vp8_epel ## SIZE ## _h ## TAPS ## _c(uint8_t *dst,            \

  490.                                                      ptrdiff_t dststride,     \

  491.                                                      uint8_t *src,            \

  492.                                                      ptrdiff_t srcstride,     \

  493.                                                      int h, int mx, int my)   \

  494. {                                                                             \

  495.     const uint8_t *filter = subpel_filters[mx - 1];                           \

  496.     const uint8_t *cm     = ff_crop_tab + MAX_NEG_CROP;                       \

  497.     int x, y;                                                                 \

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

  499.         for (x = 0; x < SIZE; x++)                                            \

  500.             dst[x] = FILTER_ ## TAPS ## TAP(src, filter, 1);                  \

  501.         dst += dststride;                                                     \

  502.         src += srcstride;                                                     \

  503.     }                                                                         \

  504. }

  505. 

  506. #define VP8_EPEL_V(SIZE, TAPS)                                                \

  507. static void put_vp8_epel ## SIZE ## _v ## TAPS ## _c(uint8_t *dst,            \

  508.                                                      ptrdiff_t dststride,     \

  509.                                                      uint8_t *src,            \

  510.                                                      ptrdiff_t srcstride,     \

  511.                                                      int h, int mx, int my)   \

  512. {                                                                             \

  513.     const uint8_t *filter = subpel_filters[my - 1];                           \

  514.     const uint8_t *cm     = ff_crop_tab + MAX_NEG_CROP;                       \

  515.     int x, y;                                                                 \

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

  517.         for (x = 0; x < SIZE; x++)                                            \

  518.             dst[x] = FILTER_ ## TAPS ## TAP(src, filter, srcstride);          \

  519.         dst += dststride;                                                     \

  520.         src += srcstride;                                                     \

  521.     }                                                                         \

  522. }

  523. 

  524. #define VP8_EPEL_HV(SIZE, HTAPS, VTAPS)                                       \

  525. static void                                                                   \

  526. put_vp8_epel ## SIZE ## _h ## HTAPS ## v ## VTAPS ## _c(uint8_t *dst,         \

  527.                                                         ptrdiff_t dststride,  \

  528.                                                         uint8_t *src,         \

  529.                                                         ptrdiff_t srcstride,  \

  530.                                                         int h, int mx,        \

  531.                                                         int my)               \

  532. {                                                                             \

  533.     const uint8_t *filter = subpel_filters[mx - 1];                           \

  534.     const uint8_t *cm     = ff_crop_tab + MAX_NEG_CROP;                       \

  535.     int x, y;                                                                 \

  536.     uint8_t tmp_array[(2 * SIZE + VTAPS - 1) * SIZE];                         \

  537.     uint8_t *tmp = tmp_array;                                                 \

  538.     src -= (2 - (VTAPS == 4)) * srcstride;                                    \

  539.                                                                               \

  540.     for (y = 0; y < h + VTAPS - 1; y++) {                                     \

  541.         for (x = 0; x < SIZE; x++)                                            \

  542.             tmp[x] = FILTER_ ## HTAPS ## TAP(src, filter, 1);                 \

  543.         tmp += SIZE;                                                          \

  544.         src += srcstride;                                                     \

  545.     }                                                                         \

  546.     tmp    = tmp_array + (2 - (VTAPS == 4)) * SIZE;                           \

  547.     filter = subpel_filters[my - 1];                                          \

  548.                                                                               \

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

  550.         for (x = 0; x < SIZE; x++)                                            \

  551.             dst[x] = FILTER_ ## VTAPS ## TAP(tmp, filter, SIZE);              \

  552.         dst += dststride;                                                     \

  553.         tmp += SIZE;                                                          \

  554.     }                                                                         \

  555. }

  556. 

  557. VP8_EPEL_H(16, 4)

  558. VP8_EPEL_H(8,  4)

  559. VP8_EPEL_H(4,  4)

  560. VP8_EPEL_H(16, 6)

  561. VP8_EPEL_H(8,  6)

  562. VP8_EPEL_H(4,  6)

  563. VP8_EPEL_V(16, 4)

  564. VP8_EPEL_V(8,  4)

  565. VP8_EPEL_V(4,  4)

  566. VP8_EPEL_V(16, 6)

  567. VP8_EPEL_V(8,  6)

  568. VP8_EPEL_V(4,  6)

  569. 

  570. VP8_EPEL_HV(16, 4, 4)

  571. VP8_EPEL_HV(8,  4, 4)

  572. VP8_EPEL_HV(4,  4, 4)

  573. VP8_EPEL_HV(16, 4, 6)

  574. VP8_EPEL_HV(8,  4, 6)

  575. VP8_EPEL_HV(4,  4, 6)

  576. VP8_EPEL_HV(16, 6, 4)

  577. VP8_EPEL_HV(8,  6, 4)

  578. VP8_EPEL_HV(4,  6, 4)

  579. VP8_EPEL_HV(16, 6, 6)

  580. VP8_EPEL_HV(8,  6, 6)

  581. VP8_EPEL_HV(4,  6, 6)

  582. 

  583. #define VP8_BILINEAR(SIZE)                                                    \

  584. static void put_vp8_bilinear ## SIZE ## _h_c(uint8_t *dst, ptrdiff_t dstride, \

  585.                                              uint8_t *src, ptrdiff_t sstride, \

  586.                                              int h, int mx, int my)           \

  587. {                                                                             \

  588.     int a = 8 - mx, b = mx;                                                   \

  589.     int x, y;                                                                 \

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

  591.         for (x = 0; x < SIZE; x++)                                            \

  592.             dst[x] = (a * src[x] + b * src[x + 1] + 4) >> 3;                  \

  593.         dst += dstride;                                                       \

  594.         src += sstride;                                                       \

  595.     }                                                                         \

  596. }                                                                             \

  597.                                                                               \

  598. static void put_vp8_bilinear ## SIZE ## _v_c(uint8_t *dst, ptrdiff_t dstride, \

  599.                                              uint8_t *src, ptrdiff_t sstride, \

  600.                                              int h, int mx, int my)           \

  601. {                                                                             \

  602.     int c = 8 - my, d = my;                                                   \

  603.     int x, y;                                                                 \

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

  605.         for (x = 0; x < SIZE; x++)                                            \

  606.             dst[x] = (c * src[x] + d * src[x + sstride] + 4) >> 3;            \

  607.         dst += dstride;                                                       \

  608.         src += sstride;                                                       \

  609.     }                                                                         \

  610. }                                                                             \

  611.                                                                               \

  612. static void put_vp8_bilinear ## SIZE ## _hv_c(uint8_t *dst,                   \

  613.                                               ptrdiff_t dstride,              \

  614.                                               uint8_t *src,                   \

  615.                                               ptrdiff_t sstride,              \

  616.                                               int h, int mx, int my)          \

  617. {                                                                             \

  618.     int a = 8 - mx, b = mx;                                                   \

  619.     int c = 8 - my, d = my;                                                   \

  620.     int x, y;                                                                 \

  621.     uint8_t tmp_array[(2 * SIZE + 1) * SIZE];                                 \

  622.     uint8_t *tmp = tmp_array;                                                 \

  623.     for (y = 0; y < h + 1; y++) {                                             \

  624.         for (x = 0; x < SIZE; x++)                                            \

  625.             tmp[x] = (a * src[x] + b * src[x + 1] + 4) >> 3;                  \

  626.         tmp += SIZE;                                                          \

  627.         src += sstride;                                                       \

  628.     }                                                                         \

  629.     tmp = tmp_array;                                                          \

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

  631.         for (x = 0; x < SIZE; x++)                                            \

  632.             dst[x] = (c * tmp[x] + d * tmp[x + SIZE] + 4) >> 3;               \

  633.         dst += dstride;                                                       \

  634.         tmp += SIZE;                                                          \

  635.     }                                                                         \

  636. }

  637. 

  638. VP8_BILINEAR(16)

  639. VP8_BILINEAR(8)

  640. VP8_BILINEAR(4)

  641. 

  642. #define VP78_MC_FUNC(IDX, SIZE)                                               \

  643.     dsp->put_vp8_epel_pixels_tab[IDX][0][0] = put_vp8_pixels ## SIZE ## _c;   \

  644.     dsp->put_vp8_epel_pixels_tab[IDX][0][1] = put_vp8_epel ## SIZE ## _h4_c;  \

  645.     dsp->put_vp8_epel_pixels_tab[IDX][0][2] = put_vp8_epel ## SIZE ## _h6_c;  \

  646.     dsp->put_vp8_epel_pixels_tab[IDX][1][0] = put_vp8_epel ## SIZE ## _v4_c;  \

  647.     dsp->put_vp8_epel_pixels_tab[IDX][1][1] = put_vp8_epel ## SIZE ## _h4v4_c; \

  648.     dsp->put_vp8_epel_pixels_tab[IDX][1][2] = put_vp8_epel ## SIZE ## _h6v4_c; \

  649.     dsp->put_vp8_epel_pixels_tab[IDX][2][0] = put_vp8_epel ## SIZE ## _v6_c;  \

  650.     dsp->put_vp8_epel_pixels_tab[IDX][2][1] = put_vp8_epel ## SIZE ## _h4v6_c; \

  651.     dsp->put_vp8_epel_pixels_tab[IDX][2][2] = put_vp8_epel ## SIZE ## _h6v6_c

  652. 

  653. #define VP78_BILINEAR_MC_FUNC(IDX, SIZE)                                      \

  654.     dsp->put_vp8_bilinear_pixels_tab[IDX][0][0] = put_vp8_pixels   ## SIZE ## _c; \

  655.     dsp->put_vp8_bilinear_pixels_tab[IDX][0][1] = put_vp8_bilinear ## SIZE ## _h_c; \

  656.     dsp->put_vp8_bilinear_pixels_tab[IDX][0][2] = put_vp8_bilinear ## SIZE ## _h_c; \

  657.     dsp->put_vp8_bilinear_pixels_tab[IDX][1][0] = put_vp8_bilinear ## SIZE ## _v_c; \

  658.     dsp->put_vp8_bilinear_pixels_tab[IDX][1][1] = put_vp8_bilinear ## SIZE ## _hv_c; \

  659.     dsp->put_vp8_bilinear_pixels_tab[IDX][1][2] = put_vp8_bilinear ## SIZE ## _hv_c; \

  660.     dsp->put_vp8_bilinear_pixels_tab[IDX][2][0] = put_vp8_bilinear ## SIZE ## _v_c; \

  661.     dsp->put_vp8_bilinear_pixels_tab[IDX][2][1] = put_vp8_bilinear ## SIZE ## _hv_c; \

  662.     dsp->put_vp8_bilinear_pixels_tab[IDX][2][2] = put_vp8_bilinear ## SIZE ## _hv_c

  663. 

  664. av_cold void ff_vp78dsp_init(VP8DSPContext *dsp)

  665. {

  666.     VP78_MC_FUNC(0, 16);

  667.     VP78_MC_FUNC(1, 8);

  668.     VP78_MC_FUNC(2, 4);

  669. 

  670.     VP78_BILINEAR_MC_FUNC(0, 16);

  671.     VP78_BILINEAR_MC_FUNC(1, 8);

  672.     VP78_BILINEAR_MC_FUNC(2, 4);

  673. 

  674.     if (ARCH_ARM)

  675.         ff_vp78dsp_init_arm(dsp);

  676.     if (ARCH_PPC)

  677.         ff_vp78dsp_init_ppc(dsp);

  678.     if (ARCH_X86)

  679.         ff_vp78dsp_init_x86(dsp);

  680. }

  681. 

  682. #if CONFIG_VP7_DECODER

  683. LOOP_FILTERS(vp7)

  684. 

  685. av_cold void ff_vp7dsp_init(VP8DSPContext *dsp)

  686. {

  687.     dsp->vp8_luma_dc_wht    = vp7_luma_dc_wht_c;

  688.     dsp->vp8_luma_dc_wht_dc = vp7_luma_dc_wht_dc_c;

  689.     dsp->vp8_idct_add       = vp7_idct_add_c;

  690.     dsp->vp8_idct_dc_add    = vp7_idct_dc_add_c;

  691.     dsp->vp8_idct_dc_add4y  = vp7_idct_dc_add4y_c;

  692.     dsp->vp8_idct_dc_add4uv = vp7_idct_dc_add4uv_c;

  693. 

  694.     dsp->vp8_v_loop_filter16y = vp7_v_loop_filter16_c;

  695.     dsp->vp8_h_loop_filter16y = vp7_h_loop_filter16_c;

  696.     dsp->vp8_v_loop_filter8uv = vp7_v_loop_filter8uv_c;

  697.     dsp->vp8_h_loop_filter8uv = vp7_h_loop_filter8uv_c;

  698. 

  699.     dsp->vp8_v_loop_filter16y_inner = vp7_v_loop_filter16_inner_c;

  700.     dsp->vp8_h_loop_filter16y_inner = vp7_h_loop_filter16_inner_c;

  701.     dsp->vp8_v_loop_filter8uv_inner = vp7_v_loop_filter8uv_inner_c;

  702.     dsp->vp8_h_loop_filter8uv_inner = vp7_h_loop_filter8uv_inner_c;

  703. 

  704.     dsp->vp8_v_loop_filter_simple = vp7_v_loop_filter_simple_c;

  705.     dsp->vp8_h_loop_filter_simple = vp7_h_loop_filter_simple_c;

  706. }

  707. #endif /* CONFIG_VP7_DECODER */

  708. 

  709. #if CONFIG_VP8_DECODER

  710. LOOP_FILTERS(vp8)

  711. 

  712. av_cold void ff_vp8dsp_init(VP8DSPContext *dsp)

  713. {

  714.     dsp->vp8_luma_dc_wht    = vp8_luma_dc_wht_c;

  715.     dsp->vp8_luma_dc_wht_dc = vp8_luma_dc_wht_dc_c;

  716.     dsp->vp8_idct_add       = vp8_idct_add_c;

  717.     dsp->vp8_idct_dc_add    = vp8_idct_dc_add_c;

  718.     dsp->vp8_idct_dc_add4y  = vp8_idct_dc_add4y_c;

  719.     dsp->vp8_idct_dc_add4uv = vp8_idct_dc_add4uv_c;

  720. 

  721.     dsp->vp8_v_loop_filter16y = vp8_v_loop_filter16_c;

  722.     dsp->vp8_h_loop_filter16y = vp8_h_loop_filter16_c;

  723.     dsp->vp8_v_loop_filter8uv = vp8_v_loop_filter8uv_c;

  724.     dsp->vp8_h_loop_filter8uv = vp8_h_loop_filter8uv_c;

  725. 

  726.     dsp->vp8_v_loop_filter16y_inner = vp8_v_loop_filter16_inner_c;

  727.     dsp->vp8_h_loop_filter16y_inner = vp8_h_loop_filter16_inner_c;

  728.     dsp->vp8_v_loop_filter8uv_inner = vp8_v_loop_filter8uv_inner_c;

  729.     dsp->vp8_h_loop_filter8uv_inner = vp8_h_loop_filter8uv_inner_c;

  730. 

  731.     dsp->vp8_v_loop_filter_simple = vp8_v_loop_filter_simple_c;

  732.     dsp->vp8_h_loop_filter_simple = vp8_h_loop_filter_simple_c;

  733. 

  734.     if (ARCH_ARM)

  735.         ff_vp8dsp_init_arm(dsp);

  736.     if (ARCH_X86)

  737.         ff_vp8dsp_init_x86(dsp);

  738.     if (ARCH_MIPS)

  739.         ff_vp8dsp_init_mips(dsp);

  740. }

  741. #endif /* CONFIG_VP8_DECODER */