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FFmpeg/libavcodec/vp9recon.c

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  1. /*

  2.  * VP9 compatible video decoder

  3.  *

  4.  * Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com>

  5.  * Copyright (C) 2013 Clément Bœsch <u pkh me>

  6.  *

  7.  * This file is part of FFmpeg.

  8.  *

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

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

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

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

  13.  *

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

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

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

  17.  * Lesser General Public License for more details.

  18.  *

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

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

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

  22.  */

  23. 

  24. #include "libavutil/avassert.h"

  25. 

  26. #include "avcodec.h"

  27. #include "internal.h"

  28. #include "videodsp.h"

  29. #include "vp9data.h"

  30. #include "vp9dec.h"

  31. 

  32. static av_always_inline int check_intra_mode(VP9TileData *td, int mode, uint8_t **a,

  33.                                              uint8_t *dst_edge, ptrdiff_t stride_edge,

  34.                                              uint8_t *dst_inner, ptrdiff_t stride_inner,

  35.                                              uint8_t *l, int col, int x, int w,

  36.                                              int row, int y, enum TxfmMode tx,

  37.                                              int p, int ss_h, int ss_v, int bytesperpixel)

  38. {

  39.     VP9Context *s = td->s;

  40.     int have_top = row > 0 || y > 0;

  41.     int have_left = col > td->tile_col_start || x > 0;

  42.     int have_right = x < w - 1;

  43.     int bpp = s->s.h.bpp;

  44.     static const uint8_t mode_conv[10][2 /* have_left */][2 /* have_top */] = {

  45.         [VERT_PRED]            = { { DC_127_PRED,          VERT_PRED            },

  46.                                    { DC_127_PRED,          VERT_PRED            } },

  47.         [HOR_PRED]             = { { DC_129_PRED,          DC_129_PRED          },

  48.                                    { HOR_PRED,             HOR_PRED             } },

  49.         [DC_PRED]              = { { DC_128_PRED,          TOP_DC_PRED          },

  50.                                    { LEFT_DC_PRED,         DC_PRED              } },

  51.         [DIAG_DOWN_LEFT_PRED]  = { { DC_127_PRED,          DIAG_DOWN_LEFT_PRED  },

  52.                                    { DC_127_PRED,          DIAG_DOWN_LEFT_PRED  } },

  53.         [DIAG_DOWN_RIGHT_PRED] = { { DIAG_DOWN_RIGHT_PRED, DIAG_DOWN_RIGHT_PRED },

  54.                                    { DIAG_DOWN_RIGHT_PRED, DIAG_DOWN_RIGHT_PRED } },

  55.         [VERT_RIGHT_PRED]      = { { VERT_RIGHT_PRED,      VERT_RIGHT_PRED      },

  56.                                    { VERT_RIGHT_PRED,      VERT_RIGHT_PRED      } },

  57.         [HOR_DOWN_PRED]        = { { HOR_DOWN_PRED,        HOR_DOWN_PRED        },

  58.                                    { HOR_DOWN_PRED,        HOR_DOWN_PRED        } },

  59.         [VERT_LEFT_PRED]       = { { DC_127_PRED,          VERT_LEFT_PRED       },

  60.                                    { DC_127_PRED,          VERT_LEFT_PRED       } },

  61.         [HOR_UP_PRED]          = { { DC_129_PRED,          DC_129_PRED          },

  62.                                    { HOR_UP_PRED,          HOR_UP_PRED          } },

  63.         [TM_VP8_PRED]          = { { DC_129_PRED,          VERT_PRED            },

  64.                                    { HOR_PRED,             TM_VP8_PRED          } },

  65.     };

  66.     static const struct {

  67.         uint8_t needs_left:1;

  68.         uint8_t needs_top:1;

  69.         uint8_t needs_topleft:1;

  70.         uint8_t needs_topright:1;

  71.         uint8_t invert_left:1;

  72.     } edges[N_INTRA_PRED_MODES] = {

  73.         [VERT_PRED]            = { .needs_top  = 1 },

  74.         [HOR_PRED]             = { .needs_left = 1 },

  75.         [DC_PRED]              = { .needs_top  = 1, .needs_left = 1 },

  76.         [DIAG_DOWN_LEFT_PRED]  = { .needs_top  = 1, .needs_topright = 1 },

  77.         [DIAG_DOWN_RIGHT_PRED] = { .needs_left = 1, .needs_top = 1,

  78.                                    .needs_topleft = 1 },

  79.         [VERT_RIGHT_PRED]      = { .needs_left = 1, .needs_top = 1,

  80.                                    .needs_topleft = 1 },

  81.         [HOR_DOWN_PRED]        = { .needs_left = 1, .needs_top = 1,

  82.                                    .needs_topleft = 1 },

  83.         [VERT_LEFT_PRED]       = { .needs_top  = 1, .needs_topright = 1 },

  84.         [HOR_UP_PRED]          = { .needs_left = 1, .invert_left = 1 },

  85.         [TM_VP8_PRED]          = { .needs_left = 1, .needs_top = 1,

  86.                                    .needs_topleft = 1 },

  87.         [LEFT_DC_PRED]         = { .needs_left = 1 },

  88.         [TOP_DC_PRED]          = { .needs_top  = 1 },

  89.         [DC_128_PRED]          = { 0 },

  90.         [DC_127_PRED]          = { 0 },

  91.         [DC_129_PRED]          = { 0 }

  92.     };

  93. 

  94.     av_assert2(mode >= 0 && mode < 10);

  95.     mode = mode_conv[mode][have_left][have_top];

  96.     if (edges[mode].needs_top) {

  97.         uint8_t *top, *topleft;

  98.         int n_px_need = 4 << tx, n_px_have = (((s->cols - col) << !ss_h) - x) * 4;

  99.         int n_px_need_tr = 0;

  100. 

  101.         if (tx == TX_4X4 && edges[mode].needs_topright && have_right)

  102.             n_px_need_tr = 4;

  103. 

  104.         // if top of sb64-row, use s->intra_pred_data[] instead of

  105.         // dst[-stride] for intra prediction (it contains pre- instead of

  106.         // post-loopfilter data)

  107.         if (have_top) {

  108.             top = !(row & 7) && !y ?

  109.                 s->intra_pred_data[p] + (col * (8 >> ss_h) + x * 4) * bytesperpixel :

  110.                 y == 0 ? &dst_edge[-stride_edge] : &dst_inner[-stride_inner];

  111.             if (have_left)

  112.                 topleft = !(row & 7) && !y ?

  113.                     s->intra_pred_data[p] + (col * (8 >> ss_h) + x * 4) * bytesperpixel :

  114.                     y == 0 || x == 0 ? &dst_edge[-stride_edge] :

  115.                     &dst_inner[-stride_inner];

  116.         }

  117. 

  118.         if (have_top &&

  119.             (!edges[mode].needs_topleft || (have_left && top == topleft)) &&

  120.             (tx != TX_4X4 || !edges[mode].needs_topright || have_right) &&

  121.             n_px_need + n_px_need_tr <= n_px_have) {

  122.             *a = top;

  123.         } else {

  124.             if (have_top) {

  125.                 if (n_px_need <= n_px_have) {

  126.                     memcpy(*a, top, n_px_need * bytesperpixel);

  127.                 } else {

  128. #define memset_bpp(c, i1, v, i2, num) do { \

  129.     if (bytesperpixel == 1) { \

  130.         memset(&(c)[(i1)], (v)[(i2)], (num)); \

  131.     } else { \

  132.         int n, val = AV_RN16A(&(v)[(i2) * 2]); \

  133.         for (n = 0; n < (num); n++) { \

  134.             AV_WN16A(&(c)[((i1) + n) * 2], val); \

  135.         } \

  136.     } \

  137. } while (0)

  138.                     memcpy(*a, top, n_px_have * bytesperpixel);

  139.                     memset_bpp(*a, n_px_have, (*a), n_px_have - 1, n_px_need - n_px_have);

  140.                 }

  141.             } else {

  142. #define memset_val(c, val, num) do { \

  143.     if (bytesperpixel == 1) { \

  144.         memset((c), (val), (num)); \

  145.     } else { \

  146.         int n; \

  147.         for (n = 0; n < (num); n++) { \

  148.             AV_WN16A(&(c)[n * 2], (val)); \

  149.         } \

  150.     } \

  151. } while (0)

  152.                 memset_val(*a, (128 << (bpp - 8)) - 1, n_px_need);

  153.             }

  154.             if (edges[mode].needs_topleft) {

  155.                 if (have_left && have_top) {

  156. #define assign_bpp(c, i1, v, i2) do { \

  157.     if (bytesperpixel == 1) { \

  158.         (c)[(i1)] = (v)[(i2)]; \

  159.     } else { \

  160.         AV_COPY16(&(c)[(i1) * 2], &(v)[(i2) * 2]); \

  161.     } \

  162. } while (0)

  163.                     assign_bpp(*a, -1, topleft, -1);

  164.                 } else {

  165. #define assign_val(c, i, v) do { \

  166.     if (bytesperpixel == 1) { \

  167.         (c)[(i)] = (v); \

  168.     } else { \

  169.         AV_WN16A(&(c)[(i) * 2], (v)); \

  170.     } \

  171. } while (0)

  172.                     assign_val((*a), -1, (128 << (bpp - 8)) + (have_top ? +1 : -1));

  173.                 }

  174.             }

  175.             if (tx == TX_4X4 && edges[mode].needs_topright) {

  176.                 if (have_top && have_right &&

  177.                     n_px_need + n_px_need_tr <= n_px_have) {

  178.                     memcpy(&(*a)[4 * bytesperpixel], &top[4 * bytesperpixel], 4 * bytesperpixel);

  179.                 } else {

  180.                     memset_bpp(*a, 4, *a, 3, 4);

  181.                 }

  182.             }

  183.         }

  184.     }

  185.     if (edges[mode].needs_left) {

  186.         if (have_left) {

  187.             int n_px_need = 4 << tx, i, n_px_have = (((s->rows - row) << !ss_v) - y) * 4;

  188.             uint8_t *dst = x == 0 ? dst_edge : dst_inner;

  189.             ptrdiff_t stride = x == 0 ? stride_edge : stride_inner;

  190. 

  191.             if (edges[mode].invert_left) {

  192.                 if (n_px_need <= n_px_have) {

  193.                     for (i = 0; i < n_px_need; i++)

  194.                         assign_bpp(l, i, &dst[i * stride], -1);

  195.                 } else {

  196.                     for (i = 0; i < n_px_have; i++)

  197.                         assign_bpp(l, i, &dst[i * stride], -1);

  198.                     memset_bpp(l, n_px_have, l, n_px_have - 1, n_px_need - n_px_have);

  199.                 }

  200.             } else {

  201.                 if (n_px_need <= n_px_have) {

  202.                     for (i = 0; i < n_px_need; i++)

  203.                         assign_bpp(l, n_px_need - 1 - i, &dst[i * stride], -1);

  204.                 } else {

  205.                     for (i = 0; i < n_px_have; i++)

  206.                         assign_bpp(l, n_px_need - 1 - i, &dst[i * stride], -1);

  207.                     memset_bpp(l, 0, l, n_px_need - n_px_have, n_px_need - n_px_have);

  208.                 }

  209.             }

  210.         } else {

  211.             memset_val(l, (128 << (bpp - 8)) + 1, 4 << tx);

  212.         }

  213.     }

  214. 

  215.     return mode;

  216. }

  217. 

  218. static av_always_inline void intra_recon(VP9TileData *td, ptrdiff_t y_off,

  219.                                          ptrdiff_t uv_off, int bytesperpixel)

  220. {

  221.     VP9Context *s = td->s;

  222.     VP9Block *b = td->b;

  223.     int row = td->row, col = td->col;

  224.     int w4 = ff_vp9_bwh_tab[1][b->bs][0] << 1, step1d = 1 << b->tx, n;

  225.     int h4 = ff_vp9_bwh_tab[1][b->bs][1] << 1, x, y, step = 1 << (b->tx * 2);

  226.     int end_x = FFMIN(2 * (s->cols - col), w4);

  227.     int end_y = FFMIN(2 * (s->rows - row), h4);

  228.     int tx = 4 * s->s.h.lossless + b->tx, uvtx = b->uvtx + 4 * s->s.h.lossless;

  229.     int uvstep1d = 1 << b->uvtx, p;

  230.     uint8_t *dst = td->dst[0], *dst_r = s->s.frames[CUR_FRAME].tf.f->data[0] + y_off;

  231.     LOCAL_ALIGNED_32(uint8_t, a_buf, [96]);

  232.     LOCAL_ALIGNED_32(uint8_t, l, [64]);

  233. 

  234.     for (n = 0, y = 0; y < end_y; y += step1d) {

  235.         uint8_t *ptr = dst, *ptr_r = dst_r;

  236.         for (x = 0; x < end_x; x += step1d, ptr += 4 * step1d * bytesperpixel,

  237.                                ptr_r += 4 * step1d * bytesperpixel, n += step) {

  238.             int mode = b->mode[b->bs > BS_8x8 && b->tx == TX_4X4 ?

  239.                                y * 2 + x : 0];

  240.             uint8_t *a = &a_buf[32];

  241.             enum TxfmType txtp = ff_vp9_intra_txfm_type[mode];

  242.             int eob = b->skip ? 0 : b->tx > TX_8X8 ? AV_RN16A(&td->eob[n]) : td->eob[n];

  243. 

  244.             mode = check_intra_mode(td, mode, &a, ptr_r,

  245.                                     s->s.frames[CUR_FRAME].tf.f->linesize[0],

  246.                                     ptr, td->y_stride, l,

  247.                                     col, x, w4, row, y, b->tx, 0, 0, 0, bytesperpixel);

  248.             s->dsp.intra_pred[b->tx][mode](ptr, td->y_stride, l, a);

  249.             if (eob)

  250.                 s->dsp.itxfm_add[tx][txtp](ptr, td->y_stride,

  251.                                            td->block + 16 * n * bytesperpixel, eob);

  252.         }

  253.         dst_r += 4 * step1d * s->s.frames[CUR_FRAME].tf.f->linesize[0];

  254.         dst   += 4 * step1d * td->y_stride;

  255.     }

  256. 

  257.     // U/V

  258.     w4    >>= s->ss_h;

  259.     end_x >>= s->ss_h;

  260.     end_y >>= s->ss_v;

  261.     step = 1 << (b->uvtx * 2);

  262.     for (p = 0; p < 2; p++) {

  263.         dst   = td->dst[1 + p];

  264.         dst_r = s->s.frames[CUR_FRAME].tf.f->data[1 + p] + uv_off;

  265.         for (n = 0, y = 0; y < end_y; y += uvstep1d) {

  266.             uint8_t *ptr = dst, *ptr_r = dst_r;

  267.             for (x = 0; x < end_x; x += uvstep1d, ptr += 4 * uvstep1d * bytesperpixel,

  268.                                    ptr_r += 4 * uvstep1d * bytesperpixel, n += step) {

  269.                 int mode = b->uvmode;

  270.                 uint8_t *a = &a_buf[32];

  271.                 int eob = b->skip ? 0 : b->uvtx > TX_8X8 ? AV_RN16A(&td->uveob[p][n]) : td->uveob[p][n];

  272. 

  273.                 mode = check_intra_mode(td, mode, &a, ptr_r,

  274.                                         s->s.frames[CUR_FRAME].tf.f->linesize[1],

  275.                                         ptr, td->uv_stride, l, col, x, w4, row, y,

  276.                                         b->uvtx, p + 1, s->ss_h, s->ss_v, bytesperpixel);

  277.                 s->dsp.intra_pred[b->uvtx][mode](ptr, td->uv_stride, l, a);

  278.                 if (eob)

  279.                     s->dsp.itxfm_add[uvtx][DCT_DCT](ptr, td->uv_stride,

  280.                                                     td->uvblock[p] + 16 * n * bytesperpixel, eob);

  281.             }

  282.             dst_r += 4 * uvstep1d * s->s.frames[CUR_FRAME].tf.f->linesize[1];

  283.             dst   += 4 * uvstep1d * td->uv_stride;

  284.         }

  285.     }

  286. }

  287. 

  288. void ff_vp9_intra_recon_8bpp(VP9TileData *td, ptrdiff_t y_off, ptrdiff_t uv_off)

  289. {

  290.     intra_recon(td, y_off, uv_off, 1);

  291. }

  292. 

  293. void ff_vp9_intra_recon_16bpp(VP9TileData *td, ptrdiff_t y_off, ptrdiff_t uv_off)

  294. {

  295.     intra_recon(td, y_off, uv_off, 2);

  296. }

  297. 

  298. static av_always_inline void mc_luma_unscaled(VP9TileData *td, vp9_mc_func (*mc)[2],

  299.                                               uint8_t *dst, ptrdiff_t dst_stride,

  300.                                               const uint8_t *ref, ptrdiff_t ref_stride,

  301.                                               ThreadFrame *ref_frame,

  302.                                               ptrdiff_t y, ptrdiff_t x, const VP56mv *mv,

  303.                                               int bw, int bh, int w, int h, int bytesperpixel)

  304. {

  305.     VP9Context *s = td->s;

  306.     int mx = mv->x, my = mv->y, th;

  307. 

  308.     y += my >> 3;

  309.     x += mx >> 3;

  310.     ref += y * ref_stride + x * bytesperpixel;

  311.     mx &= 7;

  312.     my &= 7;

  313.     // FIXME bilinear filter only needs 0/1 pixels, not 3/4

  314.     // we use +7 because the last 7 pixels of each sbrow can be changed in

  315.     // the longest loopfilter of the next sbrow

  316.     th = (y + bh + 4 * !!my + 7) >> 6;

  317.     ff_thread_await_progress(ref_frame, FFMAX(th, 0), 0);

  318.     // The arm/aarch64 _hv filters read one more row than what actually is

  319.     // needed, so switch to emulated edge one pixel sooner vertically

  320.     // (!!my * 5) than horizontally (!!mx * 4).

  321.     if (x < !!mx * 3 || y < !!my * 3 ||

  322.         x + !!mx * 4 > w - bw || y + !!my * 5 > h - bh) {

  323.         s->vdsp.emulated_edge_mc(td->edge_emu_buffer,

  324.                                  ref - !!my * 3 * ref_stride - !!mx * 3 * bytesperpixel,

  325.                                  160, ref_stride,

  326.                                  bw + !!mx * 7, bh + !!my * 7,

  327.                                  x - !!mx * 3, y - !!my * 3, w, h);

  328.         ref = td->edge_emu_buffer + !!my * 3 * 160 + !!mx * 3 * bytesperpixel;

  329.         ref_stride = 160;

  330.     }

  331.     mc[!!mx][!!my](dst, dst_stride, ref, ref_stride, bh, mx << 1, my << 1);

  332. }

  333. 

  334. static av_always_inline void mc_chroma_unscaled(VP9TileData *td, vp9_mc_func (*mc)[2],

  335.                                                 uint8_t *dst_u, uint8_t *dst_v,

  336.                                                 ptrdiff_t dst_stride,

  337.                                                 const uint8_t *ref_u, ptrdiff_t src_stride_u,

  338.                                                 const uint8_t *ref_v, ptrdiff_t src_stride_v,

  339.                                                 ThreadFrame *ref_frame,

  340.                                                 ptrdiff_t y, ptrdiff_t x, const VP56mv *mv,

  341.                                                 int bw, int bh, int w, int h, int bytesperpixel)

  342. {

  343.     VP9Context *s = td->s;

  344.     int mx = mv->x * (1 << !s->ss_h), my = mv->y * (1 << !s->ss_v), th;

  345. 

  346.     y += my >> 4;

  347.     x += mx >> 4;

  348.     ref_u += y * src_stride_u + x * bytesperpixel;

  349.     ref_v += y * src_stride_v + x * bytesperpixel;

  350.     mx &= 15;

  351.     my &= 15;

  352.     // FIXME bilinear filter only needs 0/1 pixels, not 3/4

  353.     // we use +7 because the last 7 pixels of each sbrow can be changed in

  354.     // the longest loopfilter of the next sbrow

  355.     th = (y + bh + 4 * !!my + 7) >> (6 - s->ss_v);

  356.     ff_thread_await_progress(ref_frame, FFMAX(th, 0), 0);

  357.     // The arm/aarch64 _hv filters read one more row than what actually is

  358.     // needed, so switch to emulated edge one pixel sooner vertically

  359.     // (!!my * 5) than horizontally (!!mx * 4).

  360.     if (x < !!mx * 3 || y < !!my * 3 ||

  361.         x + !!mx * 4 > w - bw || y + !!my * 5 > h - bh) {

  362.         s->vdsp.emulated_edge_mc(td->edge_emu_buffer,

  363.                                  ref_u - !!my * 3 * src_stride_u - !!mx * 3 * bytesperpixel,

  364.                                  160, src_stride_u,

  365.                                  bw + !!mx * 7, bh + !!my * 7,

  366.                                  x - !!mx * 3, y - !!my * 3, w, h);

  367.         ref_u = td->edge_emu_buffer + !!my * 3 * 160 + !!mx * 3 * bytesperpixel;

  368.         mc[!!mx][!!my](dst_u, dst_stride, ref_u, 160, bh, mx, my);

  369. 

  370.         s->vdsp.emulated_edge_mc(td->edge_emu_buffer,

  371.                                  ref_v - !!my * 3 * src_stride_v - !!mx * 3 * bytesperpixel,

  372.                                  160, src_stride_v,

  373.                                  bw + !!mx * 7, bh + !!my * 7,

  374.                                  x - !!mx * 3, y - !!my * 3, w, h);

  375.         ref_v = td->edge_emu_buffer + !!my * 3 * 160 + !!mx * 3 * bytesperpixel;

  376.         mc[!!mx][!!my](dst_v, dst_stride, ref_v, 160, bh, mx, my);

  377.     } else {

  378.         mc[!!mx][!!my](dst_u, dst_stride, ref_u, src_stride_u, bh, mx, my);

  379.         mc[!!mx][!!my](dst_v, dst_stride, ref_v, src_stride_v, bh, mx, my);

  380.     }

  381. }

  382. 

  383. #define mc_luma_dir(td, mc, dst, dst_ls, src, src_ls, tref, row, col, mv, \

  384.                     px, py, pw, ph, bw, bh, w, h, i) \

  385.     mc_luma_unscaled(td, s->dsp.mc, dst, dst_ls, src, src_ls, tref, row, col, \

  386.                      mv, bw, bh, w, h, bytesperpixel)

  387. #define mc_chroma_dir(td, mc, dstu, dstv, dst_ls, srcu, srcu_ls, srcv, srcv_ls, tref, \

  388.                       row, col, mv, px, py, pw, ph, bw, bh, w, h, i) \

  389.     mc_chroma_unscaled(td, s->dsp.mc, dstu, dstv, dst_ls, srcu, srcu_ls, srcv, srcv_ls, tref, \

  390.                        row, col, mv, bw, bh, w, h, bytesperpixel)

  391. #define SCALED 0

  392. #define FN(x) x##_8bpp

  393. #define BYTES_PER_PIXEL 1

  394. #include "vp9_mc_template.c"

  395. #undef FN

  396. #undef BYTES_PER_PIXEL

  397. #define FN(x) x##_16bpp

  398. #define BYTES_PER_PIXEL 2

  399. #include "vp9_mc_template.c"

  400. #undef mc_luma_dir

  401. #undef mc_chroma_dir

  402. #undef FN

  403. #undef BYTES_PER_PIXEL

  404. #undef SCALED

  405. 

  406. static av_always_inline void mc_luma_scaled(VP9TileData *td, vp9_scaled_mc_func smc,

  407.                                             vp9_mc_func (*mc)[2],

  408.                                             uint8_t *dst, ptrdiff_t dst_stride,

  409.                                             const uint8_t *ref, ptrdiff_t ref_stride,

  410.                                             ThreadFrame *ref_frame,

  411.                                             ptrdiff_t y, ptrdiff_t x, const VP56mv *in_mv,

  412.                                             int px, int py, int pw, int ph,

  413.                                             int bw, int bh, int w, int h, int bytesperpixel,

  414.                                             const uint16_t *scale, const uint8_t *step)

  415. {

  416.     VP9Context *s = td->s;

  417.     if (s->s.frames[CUR_FRAME].tf.f->width == ref_frame->f->width &&

  418.         s->s.frames[CUR_FRAME].tf.f->height == ref_frame->f->height) {

  419.         mc_luma_unscaled(td, mc, dst, dst_stride, ref, ref_stride, ref_frame,

  420.                          y, x, in_mv, bw, bh, w, h, bytesperpixel);

  421.     } else {

  422. #define scale_mv(n, dim) (((int64_t)(n) * scale[dim]) >> 14)

  423.     int mx, my;

  424.     int refbw_m1, refbh_m1;

  425.     int th;

  426.     VP56mv mv;

  427. 

  428.     mv.x = av_clip(in_mv->x, -(x + pw - px + 4) * 8, (s->cols * 8 - x + px + 3) * 8);

  429.     mv.y = av_clip(in_mv->y, -(y + ph - py + 4) * 8, (s->rows * 8 - y + py + 3) * 8);

  430.     // BUG libvpx seems to scale the two components separately. This introduces

  431.     // rounding errors but we have to reproduce them to be exactly compatible

  432.     // with the output from libvpx...

  433.     mx = scale_mv(mv.x * 2, 0) + scale_mv(x * 16, 0);

  434.     my = scale_mv(mv.y * 2, 1) + scale_mv(y * 16, 1);

  435. 

  436.     y = my >> 4;

  437.     x = mx >> 4;

  438.     ref += y * ref_stride + x * bytesperpixel;

  439.     mx &= 15;

  440.     my &= 15;

  441.     refbw_m1 = ((bw - 1) * step[0] + mx) >> 4;

  442.     refbh_m1 = ((bh - 1) * step[1] + my) >> 4;

  443.     // FIXME bilinear filter only needs 0/1 pixels, not 3/4

  444.     // we use +7 because the last 7 pixels of each sbrow can be changed in

  445.     // the longest loopfilter of the next sbrow

  446.     th = (y + refbh_m1 + 4 + 7) >> 6;

  447.     ff_thread_await_progress(ref_frame, FFMAX(th, 0), 0);

  448.     // The arm/aarch64 _hv filters read one more row than what actually is

  449.     // needed, so switch to emulated edge one pixel sooner vertically

  450.     // (y + 5 >= h - refbh_m1) than horizontally (x + 4 >= w - refbw_m1).

  451.     if (x < 3 || y < 3 || x + 4 >= w - refbw_m1 || y + 5 >= h - refbh_m1) {

  452.         s->vdsp.emulated_edge_mc(td->edge_emu_buffer,

  453.                                  ref - 3 * ref_stride - 3 * bytesperpixel,

  454.                                  288, ref_stride,

  455.                                  refbw_m1 + 8, refbh_m1 + 8,

  456.                                  x - 3, y - 3, w, h);

  457.         ref = td->edge_emu_buffer + 3 * 288 + 3 * bytesperpixel;

  458.         ref_stride = 288;

  459.     }

  460.     smc(dst, dst_stride, ref, ref_stride, bh, mx, my, step[0], step[1]);

  461.     }

  462. }

  463. 

  464. static av_always_inline void mc_chroma_scaled(VP9TileData *td, vp9_scaled_mc_func smc,

  465.                                               vp9_mc_func (*mc)[2],

  466.                                               uint8_t *dst_u, uint8_t *dst_v,

  467.                                               ptrdiff_t dst_stride,

  468.                                               const uint8_t *ref_u, ptrdiff_t src_stride_u,

  469.                                               const uint8_t *ref_v, ptrdiff_t src_stride_v,

  470.                                               ThreadFrame *ref_frame,

  471.                                               ptrdiff_t y, ptrdiff_t x, const VP56mv *in_mv,

  472.                                               int px, int py, int pw, int ph,

  473.                                               int bw, int bh, int w, int h, int bytesperpixel,

  474.                                               const uint16_t *scale, const uint8_t *step)

  475. {

  476.     VP9Context *s = td->s;

  477.     if (s->s.frames[CUR_FRAME].tf.f->width == ref_frame->f->width &&

  478.         s->s.frames[CUR_FRAME].tf.f->height == ref_frame->f->height) {

  479.         mc_chroma_unscaled(td, mc, dst_u, dst_v, dst_stride, ref_u, src_stride_u,

  480.                            ref_v, src_stride_v, ref_frame,

  481.                            y, x, in_mv, bw, bh, w, h, bytesperpixel);

  482.     } else {

  483.     int mx, my;

  484.     int refbw_m1, refbh_m1;

  485.     int th;

  486.     VP56mv mv;

  487. 

  488.     if (s->ss_h) {

  489.         // BUG https://code.google.com/p/webm/issues/detail?id=820

  490.         mv.x = av_clip(in_mv->x, -(x + pw - px + 4) * 16, (s->cols * 4 - x + px + 3) * 16);

  491.         mx = scale_mv(mv.x, 0) + (scale_mv(x * 16, 0) & ~15) + (scale_mv(x * 32, 0) & 15);

  492.     } else {

  493.         mv.x = av_clip(in_mv->x, -(x + pw - px + 4) * 8, (s->cols * 8 - x + px + 3) * 8);

  494.         mx = scale_mv(mv.x * 2, 0) + scale_mv(x * 16, 0);

  495.     }

  496.     if (s->ss_v) {

  497.         // BUG https://code.google.com/p/webm/issues/detail?id=820

  498.         mv.y = av_clip(in_mv->y, -(y + ph - py + 4) * 16, (s->rows * 4 - y + py + 3) * 16);

  499.         my = scale_mv(mv.y, 1) + (scale_mv(y * 16, 1) & ~15) + (scale_mv(y * 32, 1) & 15);

  500.     } else {

  501.         mv.y = av_clip(in_mv->y, -(y + ph - py + 4) * 8, (s->rows * 8 - y + py + 3) * 8);

  502.         my = scale_mv(mv.y * 2, 1) + scale_mv(y * 16, 1);

  503.     }

  504. #undef scale_mv

  505.     y = my >> 4;

  506.     x = mx >> 4;

  507.     ref_u += y * src_stride_u + x * bytesperpixel;

  508.     ref_v += y * src_stride_v + x * bytesperpixel;

  509.     mx &= 15;

  510.     my &= 15;

  511.     refbw_m1 = ((bw - 1) * step[0] + mx) >> 4;

  512.     refbh_m1 = ((bh - 1) * step[1] + my) >> 4;

  513.     // FIXME bilinear filter only needs 0/1 pixels, not 3/4

  514.     // we use +7 because the last 7 pixels of each sbrow can be changed in

  515.     // the longest loopfilter of the next sbrow

  516.     th = (y + refbh_m1 + 4 + 7) >> (6 - s->ss_v);

  517.     ff_thread_await_progress(ref_frame, FFMAX(th, 0), 0);

  518.     // The arm/aarch64 _hv filters read one more row than what actually is

  519.     // needed, so switch to emulated edge one pixel sooner vertically

  520.     // (y + 5 >= h - refbh_m1) than horizontally (x + 4 >= w - refbw_m1).

  521.     if (x < 3 || y < 3 || x + 4 >= w - refbw_m1 || y + 5 >= h - refbh_m1) {

  522.         s->vdsp.emulated_edge_mc(td->edge_emu_buffer,

  523.                                  ref_u - 3 * src_stride_u - 3 * bytesperpixel,

  524.                                  288, src_stride_u,

  525.                                  refbw_m1 + 8, refbh_m1 + 8,

  526.                                  x - 3, y - 3, w, h);

  527.         ref_u = td->edge_emu_buffer + 3 * 288 + 3 * bytesperpixel;

  528.         smc(dst_u, dst_stride, ref_u, 288, bh, mx, my, step[0], step[1]);

  529. 

  530.         s->vdsp.emulated_edge_mc(td->edge_emu_buffer,

  531.                                  ref_v - 3 * src_stride_v - 3 * bytesperpixel,

  532.                                  288, src_stride_v,

  533.                                  refbw_m1 + 8, refbh_m1 + 8,

  534.                                  x - 3, y - 3, w, h);

  535.         ref_v = td->edge_emu_buffer + 3 * 288 + 3 * bytesperpixel;

  536.         smc(dst_v, dst_stride, ref_v, 288, bh, mx, my, step[0], step[1]);

  537.     } else {

  538.         smc(dst_u, dst_stride, ref_u, src_stride_u, bh, mx, my, step[0], step[1]);

  539.         smc(dst_v, dst_stride, ref_v, src_stride_v, bh, mx, my, step[0], step[1]);

  540.     }

  541.     }

  542. }

  543. 

  544. #define mc_luma_dir(td, mc, dst, dst_ls, src, src_ls, tref, row, col, mv, \

  545.                     px, py, pw, ph, bw, bh, w, h, i) \

  546.     mc_luma_scaled(td, s->dsp.s##mc, s->dsp.mc, dst, dst_ls, src, src_ls, tref, row, col, \

  547.                    mv, px, py, pw, ph, bw, bh, w, h, bytesperpixel, \

  548.                    s->mvscale[b->ref[i]], s->mvstep[b->ref[i]])

  549. #define mc_chroma_dir(td, mc, dstu, dstv, dst_ls, srcu, srcu_ls, srcv, srcv_ls, tref, \

  550.                       row, col, mv, px, py, pw, ph, bw, bh, w, h, i) \

  551.     mc_chroma_scaled(td, s->dsp.s##mc, s->dsp.mc, dstu, dstv, dst_ls, srcu, srcu_ls, srcv, srcv_ls, tref, \

  552.                      row, col, mv, px, py, pw, ph, bw, bh, w, h, bytesperpixel, \

  553.                      s->mvscale[b->ref[i]], s->mvstep[b->ref[i]])

  554. #define SCALED 1

  555. #define FN(x) x##_scaled_8bpp

  556. #define BYTES_PER_PIXEL 1

  557. #include "vp9_mc_template.c"

  558. #undef FN

  559. #undef BYTES_PER_PIXEL

  560. #define FN(x) x##_scaled_16bpp

  561. #define BYTES_PER_PIXEL 2

  562. #include "vp9_mc_template.c"

  563. #undef mc_luma_dir

  564. #undef mc_chroma_dir

  565. #undef FN

  566. #undef BYTES_PER_PIXEL

  567. #undef SCALED

  568. 

  569. static av_always_inline void inter_recon(VP9TileData *td, int bytesperpixel)

  570. {

  571.     VP9Context *s = td->s;

  572.     VP9Block *b = td->b;

  573.     int row = td->row, col = td->col;

  574. 

  575.     if (s->mvscale[b->ref[0]][0] || (b->comp && s->mvscale[b->ref[1]][0])) {

  576.         if (bytesperpixel == 1) {

  577.             inter_pred_scaled_8bpp(td);

  578.         } else {

  579.             inter_pred_scaled_16bpp(td);

  580.         }

  581.     } else {

  582.         if (bytesperpixel == 1) {

  583.             inter_pred_8bpp(td);

  584.         } else {

  585.             inter_pred_16bpp(td);

  586.         }

  587.     }

  588. 

  589.     if (!b->skip) {

  590.         /* mostly copied intra_recon() */

  591. 

  592.         int w4 = ff_vp9_bwh_tab[1][b->bs][0] << 1, step1d = 1 << b->tx, n;

  593.         int h4 = ff_vp9_bwh_tab[1][b->bs][1] << 1, x, y, step = 1 << (b->tx * 2);

  594.         int end_x = FFMIN(2 * (s->cols - col), w4);

  595.         int end_y = FFMIN(2 * (s->rows - row), h4);

  596.         int tx = 4 * s->s.h.lossless + b->tx, uvtx = b->uvtx + 4 * s->s.h.lossless;

  597.         int uvstep1d = 1 << b->uvtx, p;

  598.         uint8_t *dst = td->dst[0];

  599. 

  600.         // y itxfm add

  601.         for (n = 0, y = 0; y < end_y; y += step1d) {

  602.             uint8_t *ptr = dst;

  603.             for (x = 0; x < end_x; x += step1d,

  604.                  ptr += 4 * step1d * bytesperpixel, n += step) {

  605.                 int eob = b->tx > TX_8X8 ? AV_RN16A(&td->eob[n]) : td->eob[n];

  606. 

  607.                 if (eob)

  608.                     s->dsp.itxfm_add[tx][DCT_DCT](ptr, td->y_stride,

  609.                                                   td->block + 16 * n * bytesperpixel, eob);

  610.             }

  611.             dst += 4 * td->y_stride * step1d;

  612.         }

  613. 

  614.         // uv itxfm add

  615.         end_x >>= s->ss_h;

  616.         end_y >>= s->ss_v;

  617.         step = 1 << (b->uvtx * 2);

  618.         for (p = 0; p < 2; p++) {

  619.             dst = td->dst[p + 1];

  620.             for (n = 0, y = 0; y < end_y; y += uvstep1d) {

  621.                 uint8_t *ptr = dst;

  622.                 for (x = 0; x < end_x; x += uvstep1d,

  623.                      ptr += 4 * uvstep1d * bytesperpixel, n += step) {

  624.                     int eob = b->uvtx > TX_8X8 ? AV_RN16A(&td->uveob[p][n]) : td->uveob[p][n];

  625. 

  626.                     if (eob)

  627.                         s->dsp.itxfm_add[uvtx][DCT_DCT](ptr, td->uv_stride,

  628.                                                         td->uvblock[p] + 16 * n * bytesperpixel, eob);

  629.                 }

  630.                 dst += 4 * uvstep1d * td->uv_stride;

  631.             }

  632.         }

  633.     }

  634. }

  635. 

  636. void ff_vp9_inter_recon_8bpp(VP9TileData *td)

  637. {

  638.     inter_recon(td, 1);

  639. }

  640. 

  641. void ff_vp9_inter_recon_16bpp(VP9TileData *td)

  642. {

  643.     inter_recon(td, 2);

  644. }