vp9: split out reconstruction functions in their own source file.

7 files changed, 674 insertions, 634 deletions

diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 5651526085..876a69e013 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -610,7 +610,7 @@ OBJS-$(CONFIG_VP8_DECODER)             += vp8.o vp56rac.o
 OBJS-$(CONFIG_VP8_CUVID_DECODER)       += cuvid.o
 OBJS-$(CONFIG_VP8_MEDIACODEC_DECODER)  += mediacodecdec.o
 OBJS-$(CONFIG_VP8_VAAPI_ENCODER)       += vaapi_encode_vp8.o
-OBJS-$(CONFIG_VP9_DECODER)             += vp9.o vp9data.o vp9dsp.o vp9lpf.o \
+OBJS-$(CONFIG_VP9_DECODER)             += vp9.o vp9data.o vp9dsp.o vp9lpf.o vp9recon.o \
                                           vp9block.o vp9prob.o vp9mvs.o vp56rac.o \
                                           vp9dsp_8bpp.o vp9dsp_10bpp.o vp9dsp_12bpp.o
 OBJS-$(CONFIG_VP9_CUVID_DECODER)       += cuvid.o
diff --git a/libavcodec/vp9_mc_template.c b/libavcodec/vp9_mc_template.c
index 2d1e9bf8fb..8ff654bc38 100644
--- a/libavcodec/vp9_mc_template.c
+++ b/libavcodec/vp9_mc_template.c
@@ -405,8 +405,10 @@ static void FN(inter_pred)(AVCodecContext *avctx)
         }
     } else {
         int bwl = bwlog_tab[0][b->bs];
-        int bw = bwh_tab[0][b->bs][0] * 4, bh = bwh_tab[0][b->bs][1] * 4;
-        int uvbw = bwh_tab[s->ss_h][b->bs][0] * 4, uvbh = bwh_tab[s->ss_v][b->bs][1] * 4;
+        int bw = ff_vp9_bwh_tab[0][b->bs][0] * 4;
+        int bh = ff_vp9_bwh_tab[0][b->bs][1] * 4;
+        int uvbw = ff_vp9_bwh_tab[s->ss_h][b->bs][0] * 4;
+        int uvbh = ff_vp9_bwh_tab[s->ss_v][b->bs][1] * 4;
 
         mc_luma_dir(s, mc[bwl][b->filter][0], s->dst[0], ls_y,
                     ref1->data[0], ref1->linesize[0], tref1,
diff --git a/libavcodec/vp9block.c b/libavcodec/vp9block.c
index f91ef1a2a9..ae2f0e4c6f 100644
--- a/libavcodec/vp9block.c
+++ b/libavcodec/vp9block.c
@@ -31,16 +31,6 @@
 #include "vp9data.h"
 #include "vp9dec.h"
 
-static const uint8_t bwh_tab[2][N_BS_SIZES][2] = {
-    {
-        { 16, 16 }, { 16, 8 }, { 8, 16 }, { 8, 8 }, { 8, 4 }, { 4, 8 },
-        {  4,  4 }, {  4, 2 }, { 2,  4 }, { 2, 2 }, { 2, 1 }, { 1, 2 }, { 1, 1 },
-    }, {
-        {  8,  8 }, {  8, 4 }, { 4,  8 }, { 4, 4 }, { 4, 2 }, { 2, 4 },
-        {  2,  2 }, {  2, 1 }, { 1,  2 }, { 1, 1 }, { 1, 1 }, { 1, 1 }, { 1, 1 },
-    }
-};
-
 static av_always_inline void setctx_2d(uint8_t *ptr, int w, int h,
                                        ptrdiff_t stride, int v)
 {
@@ -103,8 +93,8 @@ static void decode_mode(AVCodecContext *avctx)
     VP9Block *b = s->b;
     int row = s->row, col = s->col, row7 = s->row7;
     enum TxfmMode max_tx = max_tx_for_bl_bp[b->bs];
-    int bw4 = bwh_tab[1][b->bs][0], w4 = FFMIN(s->cols - col, bw4);
-    int bh4 = bwh_tab[1][b->bs][1], h4 = FFMIN(s->rows - row, bh4), y;
+    int bw4 = ff_vp9_bwh_tab[1][b->bs][0], w4 = FFMIN(s->cols - col, bw4);
+    int bh4 = ff_vp9_bwh_tab[1][b->bs][1], h4 = FFMIN(s->rows - row, bh4), y;
     int have_a = row > 0, have_l = col > s->tile_col_start;
     int vref, filter_id;
 
@@ -272,8 +262,8 @@ static void decode_mode(AVCodecContext *avctx)
             b->mode[2] =
             b->mode[1] = b->mode[0];
             // FIXME this can probably be optimized
-            memset(a, b->mode[0], bwh_tab[0][b->bs][0]);
-            memset(l, b->mode[0], bwh_tab[0][b->bs][1]);
+            memset(a, b->mode[0], ff_vp9_bwh_tab[0][b->bs][0]);
+            memset(l, b->mode[0], ff_vp9_bwh_tab[0][b->bs][1]);
         }
         b->uvmode = vp8_rac_get_tree(&s->c, ff_vp9_intramode_tree,
                                      ff_vp9_default_kf_uvmode_probs[b->mode[3]]);
@@ -725,7 +715,7 @@ static void decode_mode(AVCodecContext *avctx)
     }
 #endif
 
-    switch (bwh_tab[1][b->bs][0]) {
+    switch (ff_vp9_bwh_tab[1][b->bs][0]) {
 #define SET_CTXS(dir, off, n) \
     do { \
         SPLAT_CTX(s->dir##_skip_ctx[off],      b->skip,          n); \
@@ -748,7 +738,7 @@ static void decode_mode(AVCodecContext *avctx)
     case 4: SET_CTXS(above, col, 4); break;
     case 8: SET_CTXS(above, col, 8); break;
     }
-    switch (bwh_tab[1][b->bs][1]) {
+    switch (ff_vp9_bwh_tab[1][b->bs][1]) {
     case 1: SET_CTXS(left, row7, 1); break;
     case 2: SET_CTXS(left, row7, 2); break;
     case 4: SET_CTXS(left, row7, 4); break;
@@ -983,7 +973,7 @@ static av_always_inline int decode_coeffs(AVCodecContext *avctx, int is8bitsperp
     uint8_t (*p)[6][11] = s->prob.coef[b->tx][0 /* y */][!b->intra];
     unsigned (*c)[6][3] = s->counts.coef[b->tx][0 /* y */][!b->intra];
     unsigned (*e)[6][2] = s->counts.eob[b->tx][0 /* y */][!b->intra];
-    int w4 = bwh_tab[1][b->bs][0] << 1, h4 = bwh_tab[1][b->bs][1] << 1;
+    int w4 = ff_vp9_bwh_tab[1][b->bs][0] << 1, h4 = ff_vp9_bwh_tab[1][b->bs][1] << 1;
     int end_x = FFMIN(2 * (s->cols - col), w4);
     int end_y = FFMIN(2 * (s->rows - row), h4);
     int n, pl, x, y, ret;
@@ -1152,615 +1142,6 @@ static int decode_coeffs_16bpp(AVCodecContext *avctx)
     return decode_coeffs(avctx, 0);
 }
 
-static av_always_inline int check_intra_mode(VP9Context *s, int mode, uint8_t **a,
-                                             uint8_t *dst_edge, ptrdiff_t stride_edge,
-                                             uint8_t *dst_inner, ptrdiff_t stride_inner,
-                                             uint8_t *l, int col, int x, int w,
-                                             int row, int y, enum TxfmMode tx,
-                                             int p, int ss_h, int ss_v, int bytesperpixel)
-{
-    int have_top = row > 0 || y > 0;
-    int have_left = col > s->tile_col_start || x > 0;
-    int have_right = x < w - 1;
-    int bpp = s->s.h.bpp;
-    static const uint8_t mode_conv[10][2 /* have_left */][2 /* have_top */] = {
-        [VERT_PRED]            = { { DC_127_PRED,          VERT_PRED            },
-                                   { DC_127_PRED,          VERT_PRED            } },
-        [HOR_PRED]             = { { DC_129_PRED,          DC_129_PRED          },
-                                   { HOR_PRED,             HOR_PRED             } },
-        [DC_PRED]              = { { DC_128_PRED,          TOP_DC_PRED          },
-                                   { LEFT_DC_PRED,         DC_PRED              } },
-        [DIAG_DOWN_LEFT_PRED]  = { { DC_127_PRED,          DIAG_DOWN_LEFT_PRED  },
-                                   { DC_127_PRED,          DIAG_DOWN_LEFT_PRED  } },
-        [DIAG_DOWN_RIGHT_PRED] = { { DIAG_DOWN_RIGHT_PRED, DIAG_DOWN_RIGHT_PRED },
-                                   { DIAG_DOWN_RIGHT_PRED, DIAG_DOWN_RIGHT_PRED } },
-        [VERT_RIGHT_PRED]      = { { VERT_RIGHT_PRED,      VERT_RIGHT_PRED      },
-                                   { VERT_RIGHT_PRED,      VERT_RIGHT_PRED      } },
-        [HOR_DOWN_PRED]        = { { HOR_DOWN_PRED,        HOR_DOWN_PRED        },
-                                   { HOR_DOWN_PRED,        HOR_DOWN_PRED        } },
-        [VERT_LEFT_PRED]       = { { DC_127_PRED,          VERT_LEFT_PRED       },
-                                   { DC_127_PRED,          VERT_LEFT_PRED       } },
-        [HOR_UP_PRED]          = { { DC_129_PRED,          DC_129_PRED          },
-                                   { HOR_UP_PRED,          HOR_UP_PRED          } },
-        [TM_VP8_PRED]          = { { DC_129_PRED,          VERT_PRED            },
-                                   { HOR_PRED,             TM_VP8_PRED          } },
-    };
-    static const struct {
-        uint8_t needs_left:1;
-        uint8_t needs_top:1;
-        uint8_t needs_topleft:1;
-        uint8_t needs_topright:1;
-        uint8_t invert_left:1;
-    } edges[N_INTRA_PRED_MODES] = {
-        [VERT_PRED]            = { .needs_top  = 1 },
-        [HOR_PRED]             = { .needs_left = 1 },
-        [DC_PRED]              = { .needs_top  = 1, .needs_left = 1 },
-        [DIAG_DOWN_LEFT_PRED]  = { .needs_top  = 1, .needs_topright = 1 },
-        [DIAG_DOWN_RIGHT_PRED] = { .needs_left = 1, .needs_top = 1,
-                                   .needs_topleft = 1 },
-        [VERT_RIGHT_PRED]      = { .needs_left = 1, .needs_top = 1,
-                                   .needs_topleft = 1 },
-        [HOR_DOWN_PRED]        = { .needs_left = 1, .needs_top = 1,
-                                   .needs_topleft = 1 },
-        [VERT_LEFT_PRED]       = { .needs_top  = 1, .needs_topright = 1 },
-        [HOR_UP_PRED]          = { .needs_left = 1, .invert_left = 1 },
-        [TM_VP8_PRED]          = { .needs_left = 1, .needs_top = 1,
-                                   .needs_topleft = 1 },
-        [LEFT_DC_PRED]         = { .needs_left = 1 },
-        [TOP_DC_PRED]          = { .needs_top  = 1 },
-        [DC_128_PRED]          = { 0 },
-        [DC_127_PRED]          = { 0 },
-        [DC_129_PRED]          = { 0 }
-    };
-
-    av_assert2(mode >= 0 && mode < 10);
-    mode = mode_conv[mode][have_left][have_top];
-    if (edges[mode].needs_top) {
-        uint8_t *top, *topleft;
-        int n_px_need = 4 << tx, n_px_have = (((s->cols - col) << !ss_h) - x) * 4;
-        int n_px_need_tr = 0;
-
-        if (tx == TX_4X4 && edges[mode].needs_topright && have_right)
-            n_px_need_tr = 4;
-
-        // if top of sb64-row, use s->intra_pred_data[] instead of
-        // dst[-stride] for intra prediction (it contains pre- instead of
-        // post-loopfilter data)
-        if (have_top) {
-            top = !(row & 7) && !y ?
-                s->intra_pred_data[p] + (col * (8 >> ss_h) + x * 4) * bytesperpixel :
-                y == 0 ? &dst_edge[-stride_edge] : &dst_inner[-stride_inner];
-            if (have_left)
-                topleft = !(row & 7) && !y ?
-                    s->intra_pred_data[p] + (col * (8 >> ss_h) + x * 4) * bytesperpixel :
-                    y == 0 || x == 0 ? &dst_edge[-stride_edge] :
-                    &dst_inner[-stride_inner];
-        }
-
-        if (have_top &&
-            (!edges[mode].needs_topleft || (have_left && top == topleft)) &&
-            (tx != TX_4X4 || !edges[mode].needs_topright || have_right) &&
-            n_px_need + n_px_need_tr <= n_px_have) {
-            *a = top;
-        } else {
-            if (have_top) {
-                if (n_px_need <= n_px_have) {
-                    memcpy(*a, top, n_px_need * bytesperpixel);
-                } else {
-#define memset_bpp(c, i1, v, i2, num) do { \
-    if (bytesperpixel == 1) { \
-        memset(&(c)[(i1)], (v)[(i2)], (num)); \
-    } else { \
-        int n, val = AV_RN16A(&(v)[(i2) * 2]); \
-        for (n = 0; n < (num); n++) { \
-            AV_WN16A(&(c)[((i1) + n) * 2], val); \
-        } \
-    } \
-} while (0)
-                    memcpy(*a, top, n_px_have * bytesperpixel);
-                    memset_bpp(*a, n_px_have, (*a), n_px_have - 1, n_px_need - n_px_have);
-                }
-            } else {
-#define memset_val(c, val, num) do { \
-    if (bytesperpixel == 1) { \
-        memset((c), (val), (num)); \
-    } else { \
-        int n; \
-        for (n = 0; n < (num); n++) { \
-            AV_WN16A(&(c)[n * 2], (val)); \
-        } \
-    } \
-} while (0)
-                memset_val(*a, (128 << (bpp - 8)) - 1, n_px_need);
-            }
-            if (edges[mode].needs_topleft) {
-                if (have_left && have_top) {
-#define assign_bpp(c, i1, v, i2) do { \
-    if (bytesperpixel == 1) { \
-        (c)[(i1)] = (v)[(i2)]; \
-    } else { \
-        AV_COPY16(&(c)[(i1) * 2], &(v)[(i2) * 2]); \
-    } \
-} while (0)
-                    assign_bpp(*a, -1, topleft, -1);
-                } else {
-#define assign_val(c, i, v) do { \
-    if (bytesperpixel == 1) { \
-        (c)[(i)] = (v); \
-    } else { \
-        AV_WN16A(&(c)[(i) * 2], (v)); \
-    } \
-} while (0)
-                    assign_val((*a), -1, (128 << (bpp - 8)) + (have_top ? +1 : -1));
-                }
-            }
-            if (tx == TX_4X4 && edges[mode].needs_topright) {
-                if (have_top && have_right &&
-                    n_px_need + n_px_need_tr <= n_px_have) {
-                    memcpy(&(*a)[4 * bytesperpixel], &top[4 * bytesperpixel], 4 * bytesperpixel);
-                } else {
-                    memset_bpp(*a, 4, *a, 3, 4);
-                }
-            }
-        }
-    }
-    if (edges[mode].needs_left) {
-        if (have_left) {
-            int n_px_need = 4 << tx, i, n_px_have = (((s->rows - row) << !ss_v) - y) * 4;
-            uint8_t *dst = x == 0 ? dst_edge : dst_inner;
-            ptrdiff_t stride = x == 0 ? stride_edge : stride_inner;
-
-            if (edges[mode].invert_left) {
-                if (n_px_need <= n_px_have) {
-                    for (i = 0; i < n_px_need; i++)
-                        assign_bpp(l, i, &dst[i * stride], -1);
-                } else {
-                    for (i = 0; i < n_px_have; i++)
-                        assign_bpp(l, i, &dst[i * stride], -1);
-                    memset_bpp(l, n_px_have, l, n_px_have - 1, n_px_need - n_px_have);
-                }
-            } else {
-                if (n_px_need <= n_px_have) {
-                    for (i = 0; i < n_px_need; i++)
-                        assign_bpp(l, n_px_need - 1 - i, &dst[i * stride], -1);
-                } else {
-                    for (i = 0; i < n_px_have; i++)
-                        assign_bpp(l, n_px_need - 1 - i, &dst[i * stride], -1);
-                    memset_bpp(l, 0, l, n_px_need - n_px_have, n_px_need - n_px_have);
-                }
-            }
-        } else {
-            memset_val(l, (128 << (bpp - 8)) + 1, 4 << tx);
-        }
-    }
-
-    return mode;
-}
-
-static av_always_inline void intra_recon(AVCodecContext *avctx, ptrdiff_t y_off,
-                                         ptrdiff_t uv_off, int bytesperpixel)
-{
-    VP9Context *s = avctx->priv_data;
-    VP9Block *b = s->b;
-    int row = s->row, col = s->col;
-    int w4 = bwh_tab[1][b->bs][0] << 1, step1d = 1 << b->tx, n;
-    int h4 = bwh_tab[1][b->bs][1] << 1, x, y, step = 1 << (b->tx * 2);
-    int end_x = FFMIN(2 * (s->cols - col), w4);
-    int end_y = FFMIN(2 * (s->rows - row), h4);
-    int tx = 4 * s->s.h.lossless + b->tx, uvtx = b->uvtx + 4 * s->s.h.lossless;
-    int uvstep1d = 1 << b->uvtx, p;
-    uint8_t *dst = s->dst[0], *dst_r = s->s.frames[CUR_FRAME].tf.f->data[0] + y_off;
-    LOCAL_ALIGNED_32(uint8_t, a_buf, [96]);
-    LOCAL_ALIGNED_32(uint8_t, l, [64]);
-
-    for (n = 0, y = 0; y < end_y; y += step1d) {
-        uint8_t *ptr = dst, *ptr_r = dst_r;
-        for (x = 0; x < end_x; x += step1d, ptr += 4 * step1d * bytesperpixel,
-                               ptr_r += 4 * step1d * bytesperpixel, n += step) {
-            int mode = b->mode[b->bs > BS_8x8 && b->tx == TX_4X4 ?
-                               y * 2 + x : 0];
-            uint8_t *a = &a_buf[32];
-            enum TxfmType txtp = ff_vp9_intra_txfm_type[mode];
-            int eob = b->skip ? 0 : b->tx > TX_8X8 ? AV_RN16A(&s->eob[n]) : s->eob[n];
-
-            mode = check_intra_mode(s, mode, &a, ptr_r,
-                                    s->s.frames[CUR_FRAME].tf.f->linesize[0],
-                                    ptr, s->y_stride, l,
-                                    col, x, w4, row, y, b->tx, 0, 0, 0, bytesperpixel);
-            s->dsp.intra_pred[b->tx][mode](ptr, s->y_stride, l, a);
-            if (eob)
-                s->dsp.itxfm_add[tx][txtp](ptr, s->y_stride,
-                                           s->block + 16 * n * bytesperpixel, eob);
-        }
-        dst_r += 4 * step1d * s->s.frames[CUR_FRAME].tf.f->linesize[0];
-        dst   += 4 * step1d * s->y_stride;
-    }
-
-    // U/V
-    w4    >>= s->ss_h;
-    end_x >>= s->ss_h;
-    end_y >>= s->ss_v;
-    step = 1 << (b->uvtx * 2);
-    for (p = 0; p < 2; p++) {
-        dst   = s->dst[1 + p];
-        dst_r = s->s.frames[CUR_FRAME].tf.f->data[1 + p] + uv_off;
-        for (n = 0, y = 0; y < end_y; y += uvstep1d) {
-            uint8_t *ptr = dst, *ptr_r = dst_r;
-            for (x = 0; x < end_x; x += uvstep1d, ptr += 4 * uvstep1d * bytesperpixel,
-                                   ptr_r += 4 * uvstep1d * bytesperpixel, n += step) {
-                int mode = b->uvmode;
-                uint8_t *a = &a_buf[32];
-                int eob = b->skip ? 0 : b->uvtx > TX_8X8 ? AV_RN16A(&s->uveob[p][n]) : s->uveob[p][n];
-
-                mode = check_intra_mode(s, mode, &a, ptr_r,
-                                        s->s.frames[CUR_FRAME].tf.f->linesize[1],
-                                        ptr, s->uv_stride, l, col, x, w4, row, y,
-                                        b->uvtx, p + 1, s->ss_h, s->ss_v, bytesperpixel);
-                s->dsp.intra_pred[b->uvtx][mode](ptr, s->uv_stride, l, a);
-                if (eob)
-                    s->dsp.itxfm_add[uvtx][DCT_DCT](ptr, s->uv_stride,
-                                                    s->uvblock[p] + 16 * n * bytesperpixel, eob);
-            }
-            dst_r += 4 * uvstep1d * s->s.frames[CUR_FRAME].tf.f->linesize[1];
-            dst   += 4 * uvstep1d * s->uv_stride;
-        }
-    }
-}
-
-static void intra_recon_8bpp(AVCodecContext *avctx, ptrdiff_t y_off, ptrdiff_t uv_off)
-{
-    intra_recon(avctx, y_off, uv_off, 1);
-}
-
-static void intra_recon_16bpp(AVCodecContext *avctx, ptrdiff_t y_off, ptrdiff_t uv_off)
-{
-    intra_recon(avctx, y_off, uv_off, 2);
-}
-
-static av_always_inline void mc_luma_unscaled(VP9Context *s, vp9_mc_func (*mc)[2],
-                                              uint8_t *dst, ptrdiff_t dst_stride,
-                                              const uint8_t *ref, ptrdiff_t ref_stride,
-                                              ThreadFrame *ref_frame,
-                                              ptrdiff_t y, ptrdiff_t x, const VP56mv *mv,
-                                              int bw, int bh, int w, int h, int bytesperpixel)
-{
-    int mx = mv->x, my = mv->y, th;
-
-    y += my >> 3;
-    x += mx >> 3;
-    ref += y * ref_stride + x * bytesperpixel;
-    mx &= 7;
-    my &= 7;
-    // FIXME bilinear filter only needs 0/1 pixels, not 3/4
-    // we use +7 because the last 7 pixels of each sbrow can be changed in
-    // the longest loopfilter of the next sbrow
-    th = (y + bh + 4 * !!my + 7) >> 6;
-    ff_thread_await_progress(ref_frame, FFMAX(th, 0), 0);
-    // The arm/aarch64 _hv filters read one more row than what actually is
-    // needed, so switch to emulated edge one pixel sooner vertically
-    // (!!my * 5) than horizontally (!!mx * 4).
-    if (x < !!mx * 3 || y < !!my * 3 ||
-        x + !!mx * 4 > w - bw || y + !!my * 5 > h - bh) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
-                                 ref - !!my * 3 * ref_stride - !!mx * 3 * bytesperpixel,
-                                 160, ref_stride,
-                                 bw + !!mx * 7, bh + !!my * 7,
-                                 x - !!mx * 3, y - !!my * 3, w, h);
-        ref = s->edge_emu_buffer + !!my * 3 * 160 + !!mx * 3 * bytesperpixel;
-        ref_stride = 160;
-    }
-    mc[!!mx][!!my](dst, dst_stride, ref, ref_stride, bh, mx << 1, my << 1);
-}
-
-static av_always_inline void mc_chroma_unscaled(VP9Context *s, vp9_mc_func (*mc)[2],
-                                                uint8_t *dst_u, uint8_t *dst_v,
-                                                ptrdiff_t dst_stride,
-                                                const uint8_t *ref_u, ptrdiff_t src_stride_u,
-                                                const uint8_t *ref_v, ptrdiff_t src_stride_v,
-                                                ThreadFrame *ref_frame,
-                                                ptrdiff_t y, ptrdiff_t x, const VP56mv *mv,
-                                                int bw, int bh, int w, int h, int bytesperpixel)
-{
-    int mx = mv->x * (1 << !s->ss_h), my = mv->y * (1 << !s->ss_v), th;
-
-    y += my >> 4;
-    x += mx >> 4;
-    ref_u += y * src_stride_u + x * bytesperpixel;
-    ref_v += y * src_stride_v + x * bytesperpixel;
-    mx &= 15;
-    my &= 15;
-    // FIXME bilinear filter only needs 0/1 pixels, not 3/4
-    // we use +7 because the last 7 pixels of each sbrow can be changed in
-    // the longest loopfilter of the next sbrow
-    th = (y + bh + 4 * !!my + 7) >> (6 - s->ss_v);
-    ff_thread_await_progress(ref_frame, FFMAX(th, 0), 0);
-    // The arm/aarch64 _hv filters read one more row than what actually is
-    // needed, so switch to emulated edge one pixel sooner vertically
-    // (!!my * 5) than horizontally (!!mx * 4).
-    if (x < !!mx * 3 || y < !!my * 3 ||
-        x + !!mx * 4 > w - bw || y + !!my * 5 > h - bh) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
-                                 ref_u - !!my * 3 * src_stride_u - !!mx * 3 * bytesperpixel,
-                                 160, src_stride_u,
-                                 bw + !!mx * 7, bh + !!my * 7,
-                                 x - !!mx * 3, y - !!my * 3, w, h);
-        ref_u = s->edge_emu_buffer + !!my * 3 * 160 + !!mx * 3 * bytesperpixel;
-        mc[!!mx][!!my](dst_u, dst_stride, ref_u, 160, bh, mx, my);
-
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
-                                 ref_v - !!my * 3 * src_stride_v - !!mx * 3 * bytesperpixel,
-                                 160, src_stride_v,
-                                 bw + !!mx * 7, bh + !!my * 7,
-                                 x - !!mx * 3, y - !!my * 3, w, h);
-        ref_v = s->edge_emu_buffer + !!my * 3 * 160 + !!mx * 3 * bytesperpixel;
-        mc[!!mx][!!my](dst_v, dst_stride, ref_v, 160, bh, mx, my);
-    } else {
-        mc[!!mx][!!my](dst_u, dst_stride, ref_u, src_stride_u, bh, mx, my);
-        mc[!!mx][!!my](dst_v, dst_stride, ref_v, src_stride_v, bh, mx, my);
-    }
-}
-
-#define mc_luma_dir(s, mc, dst, dst_ls, src, src_ls, tref, row, col, mv, \
-                    px, py, pw, ph, bw, bh, w, h, i) \
-    mc_luma_unscaled(s, s->dsp.mc, dst, dst_ls, src, src_ls, tref, row, col, \
-                     mv, bw, bh, w, h, bytesperpixel)
-#define mc_chroma_dir(s, mc, dstu, dstv, dst_ls, srcu, srcu_ls, srcv, srcv_ls, tref, \
-                      row, col, mv, px, py, pw, ph, bw, bh, w, h, i) \
-    mc_chroma_unscaled(s, s->dsp.mc, dstu, dstv, dst_ls, srcu, srcu_ls, srcv, srcv_ls, tref, \
-                       row, col, mv, bw, bh, w, h, bytesperpixel)
-#define SCALED 0
-#define FN(x) x##_8bpp
-#define BYTES_PER_PIXEL 1
-#include "vp9_mc_template.c"
-#undef FN
-#undef BYTES_PER_PIXEL
-#define FN(x) x##_16bpp
-#define BYTES_PER_PIXEL 2
-#include "vp9_mc_template.c"
-#undef mc_luma_dir
-#undef mc_chroma_dir
-#undef FN
-#undef BYTES_PER_PIXEL
-#undef SCALED
-
-static av_always_inline void mc_luma_scaled(VP9Context *s, vp9_scaled_mc_func smc,
-                                            vp9_mc_func (*mc)[2],
-                                            uint8_t *dst, ptrdiff_t dst_stride,
-                                            const uint8_t *ref, ptrdiff_t ref_stride,
-                                            ThreadFrame *ref_frame,
-                                            ptrdiff_t y, ptrdiff_t x, const VP56mv *in_mv,
-                                            int px, int py, int pw, int ph,
-                                            int bw, int bh, int w, int h, int bytesperpixel,
-                                            const uint16_t *scale, const uint8_t *step)
-{
-    if (s->s.frames[CUR_FRAME].tf.f->width == ref_frame->f->width &&
-        s->s.frames[CUR_FRAME].tf.f->height == ref_frame->f->height) {
-        mc_luma_unscaled(s, mc, dst, dst_stride, ref, ref_stride, ref_frame,
-                         y, x, in_mv, bw, bh, w, h, bytesperpixel);
-    } else {
-#define scale_mv(n, dim) (((int64_t)(n) * scale[dim]) >> 14)
-    int mx, my;
-    int refbw_m1, refbh_m1;
-    int th;
-    VP56mv mv;
-
-    mv.x = av_clip(in_mv->x, -(x + pw - px + 4) * 8, (s->cols * 8 - x + px + 3) * 8);
-    mv.y = av_clip(in_mv->y, -(y + ph - py + 4) * 8, (s->rows * 8 - y + py + 3) * 8);
-    // BUG libvpx seems to scale the two components separately. This introduces
-    // rounding errors but we have to reproduce them to be exactly compatible
-    // with the output from libvpx...
-    mx = scale_mv(mv.x * 2, 0) + scale_mv(x * 16, 0);
-    my = scale_mv(mv.y * 2, 1) + scale_mv(y * 16, 1);
-
-    y = my >> 4;
-    x = mx >> 4;
-    ref += y * ref_stride + x * bytesperpixel;
-    mx &= 15;
-    my &= 15;
-    refbw_m1 = ((bw - 1) * step[0] + mx) >> 4;
-    refbh_m1 = ((bh - 1) * step[1] + my) >> 4;
-    // FIXME bilinear filter only needs 0/1 pixels, not 3/4
-    // we use +7 because the last 7 pixels of each sbrow can be changed in
-    // the longest loopfilter of the next sbrow
-    th = (y + refbh_m1 + 4 + 7) >> 6;
-    ff_thread_await_progress(ref_frame, FFMAX(th, 0), 0);
-    // The arm/aarch64 _hv filters read one more row than what actually is
-    // needed, so switch to emulated edge one pixel sooner vertically
-    // (y + 5 >= h - refbh_m1) than horizontally (x + 4 >= w - refbw_m1).
-    if (x < 3 || y < 3 || x + 4 >= w - refbw_m1 || y + 5 >= h - refbh_m1) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
-                                 ref - 3 * ref_stride - 3 * bytesperpixel,
-                                 288, ref_stride,
-                                 refbw_m1 + 8, refbh_m1 + 8,
-                                 x - 3, y - 3, w, h);
-        ref = s->edge_emu_buffer + 3 * 288 + 3 * bytesperpixel;
-        ref_stride = 288;
-    }
-    smc(dst, dst_stride, ref, ref_stride, bh, mx, my, step[0], step[1]);
-    }
-}
-
-static av_always_inline void mc_chroma_scaled(VP9Context *s, vp9_scaled_mc_func smc,
-                                              vp9_mc_func (*mc)[2],
-                                              uint8_t *dst_u, uint8_t *dst_v,
-                                              ptrdiff_t dst_stride,
-                                              const uint8_t *ref_u, ptrdiff_t src_stride_u,
-                                              const uint8_t *ref_v, ptrdiff_t src_stride_v,
-                                              ThreadFrame *ref_frame,
-                                              ptrdiff_t y, ptrdiff_t x, const VP56mv *in_mv,
-                                              int px, int py, int pw, int ph,
-                                              int bw, int bh, int w, int h, int bytesperpixel,
-                                              const uint16_t *scale, const uint8_t *step)
-{
-    if (s->s.frames[CUR_FRAME].tf.f->width == ref_frame->f->width &&
-        s->s.frames[CUR_FRAME].tf.f->height == ref_frame->f->height) {
-        mc_chroma_unscaled(s, mc, dst_u, dst_v, dst_stride, ref_u, src_stride_u,
-                           ref_v, src_stride_v, ref_frame,
-                           y, x, in_mv, bw, bh, w, h, bytesperpixel);
-    } else {
-    int mx, my;
-    int refbw_m1, refbh_m1;
-    int th;
-    VP56mv mv;
-
-    if (s->ss_h) {
-        // BUG https://code.google.com/p/webm/issues/detail?id=820
-        mv.x = av_clip(in_mv->x, -(x + pw - px + 4) * 16, (s->cols * 4 - x + px + 3) * 16);
-        mx = scale_mv(mv.x, 0) + (scale_mv(x * 16, 0) & ~15) + (scale_mv(x * 32, 0) & 15);
-    } else {
-        mv.x = av_clip(in_mv->x, -(x + pw - px + 4) * 8, (s->cols * 8 - x + px + 3) * 8);
-        mx = scale_mv(mv.x * 2, 0) + scale_mv(x * 16, 0);
-    }
-    if (s->ss_v) {
-        // BUG https://code.google.com/p/webm/issues/detail?id=820
-        mv.y = av_clip(in_mv->y, -(y + ph - py + 4) * 16, (s->rows * 4 - y + py + 3) * 16);
-        my = scale_mv(mv.y, 1) + (scale_mv(y * 16, 1) & ~15) + (scale_mv(y * 32, 1) & 15);
-    } else {
-        mv.y = av_clip(in_mv->y, -(y + ph - py + 4) * 8, (s->rows * 8 - y + py + 3) * 8);
-        my = scale_mv(mv.y * 2, 1) + scale_mv(y * 16, 1);
-    }
-#undef scale_mv
-    y = my >> 4;
-    x = mx >> 4;
-    ref_u += y * src_stride_u + x * bytesperpixel;
-    ref_v += y * src_stride_v + x * bytesperpixel;
-    mx &= 15;
-    my &= 15;
-    refbw_m1 = ((bw - 1) * step[0] + mx) >> 4;
-    refbh_m1 = ((bh - 1) * step[1] + my) >> 4;
-    // FIXME bilinear filter only needs 0/1 pixels, not 3/4
-    // we use +7 because the last 7 pixels of each sbrow can be changed in
-    // the longest loopfilter of the next sbrow
-    th = (y + refbh_m1 + 4 + 7) >> (6 - s->ss_v);
-    ff_thread_await_progress(ref_frame, FFMAX(th, 0), 0);
-    // The arm/aarch64 _hv filters read one more row than what actually is
-    // needed, so switch to emulated edge one pixel sooner vertically
-    // (y + 5 >= h - refbh_m1) than horizontally (x + 4 >= w - refbw_m1).
-    if (x < 3 || y < 3 || x + 4 >= w - refbw_m1 || y + 5 >= h - refbh_m1) {
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
-                                 ref_u - 3 * src_stride_u - 3 * bytesperpixel,
-                                 288, src_stride_u,
-                                 refbw_m1 + 8, refbh_m1 + 8,
-                                 x - 3, y - 3, w, h);
-        ref_u = s->edge_emu_buffer + 3 * 288 + 3 * bytesperpixel;
-        smc(dst_u, dst_stride, ref_u, 288, bh, mx, my, step[0], step[1]);
-
-        s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
-                                 ref_v - 3 * src_stride_v - 3 * bytesperpixel,
-                                 288, src_stride_v,
-                                 refbw_m1 + 8, refbh_m1 + 8,
-                                 x - 3, y - 3, w, h);
-        ref_v = s->edge_emu_buffer + 3 * 288 + 3 * bytesperpixel;
-        smc(dst_v, dst_stride, ref_v, 288, bh, mx, my, step[0], step[1]);
-    } else {
-        smc(dst_u, dst_stride, ref_u, src_stride_u, bh, mx, my, step[0], step[1]);
-        smc(dst_v, dst_stride, ref_v, src_stride_v, bh, mx, my, step[0], step[1]);
-    }
-    }
-}
-
-#define mc_luma_dir(s, mc, dst, dst_ls, src, src_ls, tref, row, col, mv, \
-                    px, py, pw, ph, bw, bh, w, h, i) \
-    mc_luma_scaled(s, s->dsp.s##mc, s->dsp.mc, dst, dst_ls, src, src_ls, tref, row, col, \
-                   mv, px, py, pw, ph, bw, bh, w, h, bytesperpixel, \
-                   s->mvscale[b->ref[i]], s->mvstep[b->ref[i]])
-#define mc_chroma_dir(s, mc, dstu, dstv, dst_ls, srcu, srcu_ls, srcv, srcv_ls, tref, \
-                      row, col, mv, px, py, pw, ph, bw, bh, w, h, i) \
-    mc_chroma_scaled(s, s->dsp.s##mc, s->dsp.mc, dstu, dstv, dst_ls, srcu, srcu_ls, srcv, srcv_ls, tref, \
-                     row, col, mv, px, py, pw, ph, bw, bh, w, h, bytesperpixel, \
-                     s->mvscale[b->ref[i]], s->mvstep[b->ref[i]])
-#define SCALED 1
-#define FN(x) x##_scaled_8bpp
-#define BYTES_PER_PIXEL 1
-#include "vp9_mc_template.c"
-#undef FN
-#undef BYTES_PER_PIXEL
-#define FN(x) x##_scaled_16bpp
-#define BYTES_PER_PIXEL 2
-#include "vp9_mc_template.c"
-#undef mc_luma_dir
-#undef mc_chroma_dir
-#undef FN
-#undef BYTES_PER_PIXEL
-#undef SCALED
-
-static av_always_inline void inter_recon(AVCodecContext *avctx, int bytesperpixel)
-{
-    VP9Context *s = avctx->priv_data;
-    VP9Block *b = s->b;
-    int row = s->row, col = s->col;
-
-    if (s->mvscale[b->ref[0]][0] || (b->comp && s->mvscale[b->ref[1]][0])) {
-        if (bytesperpixel == 1) {
-            inter_pred_scaled_8bpp(avctx);
-        } else {
-            inter_pred_scaled_16bpp(avctx);
-        }
-    } else {
-        if (bytesperpixel == 1) {
-            inter_pred_8bpp(avctx);
-        } else {
-            inter_pred_16bpp(avctx);
-        }
-    }
-
-    if (!b->skip) {
-        /* mostly copied intra_recon() */
-
-        int w4 = bwh_tab[1][b->bs][0] << 1, step1d = 1 << b->tx, n;
-        int h4 = bwh_tab[1][b->bs][1] << 1, x, y, step = 1 << (b->tx * 2);
-        int end_x = FFMIN(2 * (s->cols - col), w4);
-        int end_y = FFMIN(2 * (s->rows - row), h4);
-        int tx = 4 * s->s.h.lossless + b->tx, uvtx = b->uvtx + 4 * s->s.h.lossless;
-        int uvstep1d = 1 << b->uvtx, p;
-        uint8_t *dst = s->dst[0];
-
-        // y itxfm add
-        for (n = 0, y = 0; y < end_y; y += step1d) {
-            uint8_t *ptr = dst;
-            for (x = 0; x < end_x; x += step1d,
-                 ptr += 4 * step1d * bytesperpixel, n += step) {
-                int eob = b->tx > TX_8X8 ? AV_RN16A(&s->eob[n]) : s->eob[n];
-
-                if (eob)
-                    s->dsp.itxfm_add[tx][DCT_DCT](ptr, s->y_stride,
-                                                  s->block + 16 * n * bytesperpixel, eob);
-            }
-            dst += 4 * s->y_stride * step1d;
-        }
-
-        // uv itxfm add
-        end_x >>= s->ss_h;
-        end_y >>= s->ss_v;
-        step = 1 << (b->uvtx * 2);
-        for (p = 0; p < 2; p++) {
-            dst = s->dst[p + 1];
-            for (n = 0, y = 0; y < end_y; y += uvstep1d) {
-                uint8_t *ptr = dst;
-                for (x = 0; x < end_x; x += uvstep1d,
-                     ptr += 4 * uvstep1d * bytesperpixel, n += step) {
-                    int eob = b->uvtx > TX_8X8 ? AV_RN16A(&s->uveob[p][n]) : s->uveob[p][n];
-
-                    if (eob)
-                        s->dsp.itxfm_add[uvtx][DCT_DCT](ptr, s->uv_stride,
-                                                        s->uvblock[p] + 16 * n * bytesperpixel, eob);
-                }
-                dst += 4 * uvstep1d * s->uv_stride;
-            }
-        }
-    }
-}
-
-static void inter_recon_8bpp(AVCodecContext *avctx)
-{
-    inter_recon(avctx, 1);
-}
-
-static void inter_recon_16bpp(AVCodecContext *avctx)
-{
-    inter_recon(avctx, 2);
-}
-
 static av_always_inline void mask_edges(uint8_t (*mask)[8][4], int ss_h, int ss_v,
                                         int row_and_7, int col_and_7,
                                         int w, int h, int col_end, int row_end,
@@ -1891,7 +1272,7 @@ void ff_vp9_decode_block(AVCodecContext *avctx, int row, int col,
     VP9Block *b = s->b;
     enum BlockSize bs = bl * 3 + bp;
     int bytesperpixel = s->bytesperpixel;
-    int w4 = bwh_tab[1][bs][0], h4 = bwh_tab[1][bs][1], lvl;
+    int w4 = ff_vp9_bwh_tab[1][bs][0], h4 = ff_vp9_bwh_tab[1][bs][1], lvl;
     int emu[2];
     AVFrame *f = s->s.frames[CUR_FRAME].tf.f;
 
@@ -2001,15 +1382,15 @@ void ff_vp9_decode_block(AVCodecContext *avctx, int row, int col,
     }
     if (b->intra) {
         if (s->s.h.bpp > 8) {
-            intra_recon_16bpp(avctx, yoff, uvoff);
+            ff_vp9_intra_recon_16bpp(avctx, yoff, uvoff);
         } else {
-            intra_recon_8bpp(avctx, yoff, uvoff);
+            ff_vp9_intra_recon_8bpp(avctx, yoff, uvoff);
         }
     } else {
         if (s->s.h.bpp > 8) {
-            inter_recon_16bpp(avctx);
+            ff_vp9_inter_recon_16bpp(avctx);
         } else {
-            inter_recon_8bpp(avctx);
+            ff_vp9_inter_recon_8bpp(avctx);
         }
     }
     if (emu[0]) {
diff --git a/libavcodec/vp9data.c b/libavcodec/vp9data.c
index 4057c73696..7af8a97b1e 100644
--- a/libavcodec/vp9data.c
+++ b/libavcodec/vp9data.c
@@ -22,6 +22,16 @@
 #include "vp9.h"
 #include "vp9data.h"
 
+const uint8_t ff_vp9_bwh_tab[2][N_BS_SIZES][2] = {
+    {
+        { 16, 16 }, { 16, 8 }, { 8, 16 }, { 8, 8 }, { 8, 4 }, { 4, 8 },
+        {  4,  4 }, {  4, 2 }, { 2,  4 }, { 2, 2 }, { 2, 1 }, { 1, 2 }, { 1, 1 },
+    }, {
+        {  8,  8 }, {  8, 4 }, { 4,  8 }, { 4, 4 }, { 4, 2 }, { 2, 4 },
+        {  2,  2 }, {  2, 1 }, { 1,  2 }, { 1, 1 }, { 1, 1 }, { 1, 1 }, { 1, 1 },
+    }
+};
+
 const int8_t ff_vp9_partition_tree[3][2] = {
     { -PARTITION_NONE, 1 },                      // '0'
         { -PARTITION_H, 2 },                     // '10'
diff --git a/libavcodec/vp9data.h b/libavcodec/vp9data.h
index f27ab0b267..086dbdec06 100644
--- a/libavcodec/vp9data.h
+++ b/libavcodec/vp9data.h
@@ -26,6 +26,7 @@
 
 #include "vp9dec.h"
 
+extern const uint8_t ff_vp9_bwh_tab[2][N_BS_SIZES][2];
 extern const int8_t ff_vp9_partition_tree[3][2];
 extern const uint8_t ff_vp9_default_kf_partition_probs[4][4][3];
 extern const int8_t ff_vp9_segmentation_tree[7][2];
diff --git a/libavcodec/vp9dec.h b/libavcodec/vp9dec.h
index 1f3348adb1..f05e478a4a 100644
--- a/libavcodec/vp9dec.h
+++ b/libavcodec/vp9dec.h
@@ -206,4 +206,11 @@ void ff_vp9_decode_block(AVCodecContext *ctx, int row, int col,
 void ff_vp9_loopfilter_sb(AVCodecContext *avctx, VP9Filter *lflvl,
                           int row, int col, ptrdiff_t yoff, ptrdiff_t uvoff);
 
+void ff_vp9_intra_recon_8bpp(AVCodecContext *avctx,
+                             ptrdiff_t y_off, ptrdiff_t uv_off);
+void ff_vp9_intra_recon_16bpp(AVCodecContext *avctx,
+                              ptrdiff_t y_off, ptrdiff_t uv_off);
+void ff_vp9_inter_recon_8bpp(AVCodecContext *avctx);
+void ff_vp9_inter_recon_16bpp(AVCodecContext *avctx);
+
 #endif /* AVCODEC_VP9DEC_H */
diff --git a/libavcodec/vp9recon.c b/libavcodec/vp9recon.c
new file mode 100644
index 0000000000..afdb51350c
--- /dev/null
+++ b/libavcodec/vp9recon.c
@@ -0,0 +1,639 @@
+/*
+ * VP9 compatible video decoder
+ *
+ * Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com>
+ * Copyright (C) 2013 Clément Bœsch <u pkh me>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/avassert.h"
+
+#include "avcodec.h"
+#include "internal.h"
+#include "videodsp.h"
+#include "vp9data.h"
+#include "vp9dec.h"
+
+static av_always_inline int check_intra_mode(VP9Context *s, int mode, uint8_t **a,
+                                             uint8_t *dst_edge, ptrdiff_t stride_edge,
+                                             uint8_t *dst_inner, ptrdiff_t stride_inner,
+                                             uint8_t *l, int col, int x, int w,
+                                             int row, int y, enum TxfmMode tx,
+                                             int p, int ss_h, int ss_v, int bytesperpixel)
+{
+    int have_top = row > 0 || y > 0;
+    int have_left = col > s->tile_col_start || x > 0;
+    int have_right = x < w - 1;
+    int bpp = s->s.h.bpp;
+    static const uint8_t mode_conv[10][2 /* have_left */][2 /* have_top */] = {
+        [VERT_PRED]            = { { DC_127_PRED,          VERT_PRED            },
+                                   { DC_127_PRED,          VERT_PRED            } },
+        [HOR_PRED]             = { { DC_129_PRED,          DC_129_PRED          },
+                                   { HOR_PRED,             HOR_PRED             } },
+        [DC_PRED]              = { { DC_128_PRED,          TOP_DC_PRED          },
+                                   { LEFT_DC_PRED,         DC_PRED              } },
+        [DIAG_DOWN_LEFT_PRED]  = { { DC_127_PRED,          DIAG_DOWN_LEFT_PRED  },
+                                   { DC_127_PRED,          DIAG_DOWN_LEFT_PRED  } },
+        [DIAG_DOWN_RIGHT_PRED] = { { DIAG_DOWN_RIGHT_PRED, DIAG_DOWN_RIGHT_PRED },
+                                   { DIAG_DOWN_RIGHT_PRED, DIAG_DOWN_RIGHT_PRED } },
+        [VERT_RIGHT_PRED]      = { { VERT_RIGHT_PRED,      VERT_RIGHT_PRED      },
+                                   { VERT_RIGHT_PRED,      VERT_RIGHT_PRED      } },
+        [HOR_DOWN_PRED]        = { { HOR_DOWN_PRED,        HOR_DOWN_PRED        },
+                                   { HOR_DOWN_PRED,        HOR_DOWN_PRED        } },
+        [VERT_LEFT_PRED]       = { { DC_127_PRED,          VERT_LEFT_PRED       },
+                                   { DC_127_PRED,          VERT_LEFT_PRED       } },
+        [HOR_UP_PRED]          = { { DC_129_PRED,          DC_129_PRED          },
+                                   { HOR_UP_PRED,          HOR_UP_PRED          } },
+        [TM_VP8_PRED]          = { { DC_129_PRED,          VERT_PRED            },
+                                   { HOR_PRED,             TM_VP8_PRED          } },
+    };
+    static const struct {
+        uint8_t needs_left:1;
+        uint8_t needs_top:1;
+        uint8_t needs_topleft:1;
+        uint8_t needs_topright:1;
+        uint8_t invert_left:1;
+    } edges[N_INTRA_PRED_MODES] = {
+        [VERT_PRED]            = { .needs_top  = 1 },
+        [HOR_PRED]             = { .needs_left = 1 },
+        [DC_PRED]              = { .needs_top  = 1, .needs_left = 1 },
+        [DIAG_DOWN_LEFT_PRED]  = { .needs_top  = 1, .needs_topright = 1 },
+        [DIAG_DOWN_RIGHT_PRED] = { .needs_left = 1, .needs_top = 1,
+                                   .needs_topleft = 1 },
+        [VERT_RIGHT_PRED]      = { .needs_left = 1, .needs_top = 1,
+                                   .needs_topleft = 1 },
+        [HOR_DOWN_PRED]        = { .needs_left = 1, .needs_top = 1,
+                                   .needs_topleft = 1 },
+        [VERT_LEFT_PRED]       = { .needs_top  = 1, .needs_topright = 1 },
+        [HOR_UP_PRED]          = { .needs_left = 1, .invert_left = 1 },
+        [TM_VP8_PRED]          = { .needs_left = 1, .needs_top = 1,
+                                   .needs_topleft = 1 },
+        [LEFT_DC_PRED]         = { .needs_left = 1 },
+        [TOP_DC_PRED]          = { .needs_top  = 1 },
+        [DC_128_PRED]          = { 0 },
+        [DC_127_PRED]          = { 0 },
+        [DC_129_PRED]          = { 0 }
+    };
+
+    av_assert2(mode >= 0 && mode < 10);
+    mode = mode_conv[mode][have_left][have_top];
+    if (edges[mode].needs_top) {
+        uint8_t *top, *topleft;
+        int n_px_need = 4 << tx, n_px_have = (((s->cols - col) << !ss_h) - x) * 4;
+        int n_px_need_tr = 0;
+
+        if (tx == TX_4X4 && edges[mode].needs_topright && have_right)
+            n_px_need_tr = 4;
+
+        // if top of sb64-row, use s->intra_pred_data[] instead of
+        // dst[-stride] for intra prediction (it contains pre- instead of
+        // post-loopfilter data)
+        if (have_top) {
+            top = !(row & 7) && !y ?
+                s->intra_pred_data[p] + (col * (8 >> ss_h) + x * 4) * bytesperpixel :
+                y == 0 ? &dst_edge[-stride_edge] : &dst_inner[-stride_inner];
+            if (have_left)
+                topleft = !(row & 7) && !y ?
+                    s->intra_pred_data[p] + (col * (8 >> ss_h) + x * 4) * bytesperpixel :
+                    y == 0 || x == 0 ? &dst_edge[-stride_edge] :
+                    &dst_inner[-stride_inner];
+        }
+
+        if (have_top &&
+            (!edges[mode].needs_topleft || (have_left && top == topleft)) &&
+            (tx != TX_4X4 || !edges[mode].needs_topright || have_right) &&
+            n_px_need + n_px_need_tr <= n_px_have) {
+            *a = top;
+        } else {
+            if (have_top) {
+                if (n_px_need <= n_px_have) {
+                    memcpy(*a, top, n_px_need * bytesperpixel);
+                } else {
+#define memset_bpp(c, i1, v, i2, num) do { \
+    if (bytesperpixel == 1) { \
+        memset(&(c)[(i1)], (v)[(i2)], (num)); \
+    } else { \
+        int n, val = AV_RN16A(&(v)[(i2) * 2]); \
+        for (n = 0; n < (num); n++) { \
+            AV_WN16A(&(c)[((i1) + n) * 2], val); \
+        } \
+    } \
+} while (0)
+                    memcpy(*a, top, n_px_have * bytesperpixel);
+                    memset_bpp(*a, n_px_have, (*a), n_px_have - 1, n_px_need - n_px_have);
+                }
+            } else {
+#define memset_val(c, val, num) do { \
+    if (bytesperpixel == 1) { \
+        memset((c), (val), (num)); \
+    } else { \
+        int n; \
+        for (n = 0; n < (num); n++) { \
+            AV_WN16A(&(c)[n * 2], (val)); \
+        } \
+    } \
+} while (0)
+                memset_val(*a, (128 << (bpp - 8)) - 1, n_px_need);
+            }
+            if (edges[mode].needs_topleft) {
+                if (have_left && have_top) {
+#define assign_bpp(c, i1, v, i2) do { \
+    if (bytesperpixel == 1) { \
+        (c)[(i1)] = (v)[(i2)]; \
+    } else { \
+        AV_COPY16(&(c)[(i1) * 2], &(v)[(i2) * 2]); \
+    } \
+} while (0)
+                    assign_bpp(*a, -1, topleft, -1);
+                } else {
+#define assign_val(c, i, v) do { \
+    if (bytesperpixel == 1) { \
+        (c)[(i)] = (v); \
+    } else { \
+        AV_WN16A(&(c)[(i) * 2], (v)); \
+    } \
+} while (0)
+                    assign_val((*a), -1, (128 << (bpp - 8)) + (have_top ? +1 : -1));
+                }
+            }
+            if (tx == TX_4X4 && edges[mode].needs_topright) {
+                if (have_top && have_right &&
+                    n_px_need + n_px_need_tr <= n_px_have) {
+                    memcpy(&(*a)[4 * bytesperpixel], &top[4 * bytesperpixel], 4 * bytesperpixel);
+                } else {
+                    memset_bpp(*a, 4, *a, 3, 4);
+                }
+            }
+        }
+    }
+    if (edges[mode].needs_left) {
+        if (have_left) {
+            int n_px_need = 4 << tx, i, n_px_have = (((s->rows - row) << !ss_v) - y) * 4;
+            uint8_t *dst = x == 0 ? dst_edge : dst_inner;
+            ptrdiff_t stride = x == 0 ? stride_edge : stride_inner;
+
+            if (edges[mode].invert_left) {
+                if (n_px_need <= n_px_have) {
+                    for (i = 0; i < n_px_need; i++)
+                        assign_bpp(l, i, &dst[i * stride], -1);
+                } else {
+                    for (i = 0; i < n_px_have; i++)
+                        assign_bpp(l, i, &dst[i * stride], -1);
+                    memset_bpp(l, n_px_have, l, n_px_have - 1, n_px_need - n_px_have);
+                }
+            } else {
+                if (n_px_need <= n_px_have) {
+                    for (i = 0; i < n_px_need; i++)
+                        assign_bpp(l, n_px_need - 1 - i, &dst[i * stride], -1);
+                } else {
+                    for (i = 0; i < n_px_have; i++)
+                        assign_bpp(l, n_px_need - 1 - i, &dst[i * stride], -1);
+                    memset_bpp(l, 0, l, n_px_need - n_px_have, n_px_need - n_px_have);
+                }
+            }
+        } else {
+            memset_val(l, (128 << (bpp - 8)) + 1, 4 << tx);
+        }
+    }
+
+    return mode;
+}
+
+static av_always_inline void intra_recon(AVCodecContext *avctx, ptrdiff_t y_off,
+                                         ptrdiff_t uv_off, int bytesperpixel)
+{
+    VP9Context *s = avctx->priv_data;
+    VP9Block *b = s->b;
+    int row = s->row, col = s->col;
+    int w4 = ff_vp9_bwh_tab[1][b->bs][0] << 1, step1d = 1 << b->tx, n;
+    int h4 = ff_vp9_bwh_tab[1][b->bs][1] << 1, x, y, step = 1 << (b->tx * 2);
+    int end_x = FFMIN(2 * (s->cols - col), w4);
+    int end_y = FFMIN(2 * (s->rows - row), h4);
+    int tx = 4 * s->s.h.lossless + b->tx, uvtx = b->uvtx + 4 * s->s.h.lossless;
+    int uvstep1d = 1 << b->uvtx, p;
+    uint8_t *dst = s->dst[0], *dst_r = s->s.frames[CUR_FRAME].tf.f->data[0] + y_off;
+    LOCAL_ALIGNED_32(uint8_t, a_buf, [96]);
+    LOCAL_ALIGNED_32(uint8_t, l, [64]);
+
+    for (n = 0, y = 0; y < end_y; y += step1d) {
+        uint8_t *ptr = dst, *ptr_r = dst_r;
+        for (x = 0; x < end_x; x += step1d, ptr += 4 * step1d * bytesperpixel,
+                               ptr_r += 4 * step1d * bytesperpixel, n += step) {
+            int mode = b->mode[b->bs > BS_8x8 && b->tx == TX_4X4 ?
+                               y * 2 + x : 0];
+            uint8_t *a = &a_buf[32];
+            enum TxfmType txtp = ff_vp9_intra_txfm_type[mode];
+            int eob = b->skip ? 0 : b->tx > TX_8X8 ? AV_RN16A(&s->eob[n]) : s->eob[n];
+
+            mode = check_intra_mode(s, mode, &a, ptr_r,
+                                    s->s.frames[CUR_FRAME].tf.f->linesize[0],
+                                    ptr, s->y_stride, l,
+                                    col, x, w4, row, y, b->tx, 0, 0, 0, bytesperpixel);
+            s->dsp.intra_pred[b->tx][mode](ptr, s->y_stride, l, a);
+            if (eob)
+                s->dsp.itxfm_add[tx][txtp](ptr, s->y_stride,
+                                           s->block + 16 * n * bytesperpixel, eob);
+        }
+        dst_r += 4 * step1d * s->s.frames[CUR_FRAME].tf.f->linesize[0];
+        dst   += 4 * step1d * s->y_stride;
+    }
+
+    // U/V
+    w4    >>= s->ss_h;
+    end_x >>= s->ss_h;
+    end_y >>= s->ss_v;
+    step = 1 << (b->uvtx * 2);
+    for (p = 0; p < 2; p++) {
+        dst   = s->dst[1 + p];
+        dst_r = s->s.frames[CUR_FRAME].tf.f->data[1 + p] + uv_off;
+        for (n = 0, y = 0; y < end_y; y += uvstep1d) {
+            uint8_t *ptr = dst, *ptr_r = dst_r;
+            for (x = 0; x < end_x; x += uvstep1d, ptr += 4 * uvstep1d * bytesperpixel,
+                                   ptr_r += 4 * uvstep1d * bytesperpixel, n += step) {
+                int mode = b->uvmode;
+                uint8_t *a = &a_buf[32];
+                int eob = b->skip ? 0 : b->uvtx > TX_8X8 ? AV_RN16A(&s->uveob[p][n]) : s->uveob[p][n];
+
+                mode = check_intra_mode(s, mode, &a, ptr_r,
+                                        s->s.frames[CUR_FRAME].tf.f->linesize[1],
+                                        ptr, s->uv_stride, l, col, x, w4, row, y,
+                                        b->uvtx, p + 1, s->ss_h, s->ss_v, bytesperpixel);
+                s->dsp.intra_pred[b->uvtx][mode](ptr, s->uv_stride, l, a);
+                if (eob)
+                    s->dsp.itxfm_add[uvtx][DCT_DCT](ptr, s->uv_stride,
+                                                    s->uvblock[p] + 16 * n * bytesperpixel, eob);
+            }
+            dst_r += 4 * uvstep1d * s->s.frames[CUR_FRAME].tf.f->linesize[1];
+            dst   += 4 * uvstep1d * s->uv_stride;
+        }
+    }
+}
+
+void ff_vp9_intra_recon_8bpp(AVCodecContext *avctx, ptrdiff_t y_off, ptrdiff_t uv_off)
+{
+    intra_recon(avctx, y_off, uv_off, 1);
+}
+
+void ff_vp9_intra_recon_16bpp(AVCodecContext *avctx, ptrdiff_t y_off, ptrdiff_t uv_off)
+{
+    intra_recon(avctx, y_off, uv_off, 2);
+}
+
+static av_always_inline void mc_luma_unscaled(VP9Context *s, vp9_mc_func (*mc)[2],
+                                              uint8_t *dst, ptrdiff_t dst_stride,
+                                              const uint8_t *ref, ptrdiff_t ref_stride,
+                                              ThreadFrame *ref_frame,
+                                              ptrdiff_t y, ptrdiff_t x, const VP56mv *mv,
+                                              int bw, int bh, int w, int h, int bytesperpixel)
+{
+    int mx = mv->x, my = mv->y, th;
+
+    y += my >> 3;
+    x += mx >> 3;
+    ref += y * ref_stride + x * bytesperpixel;
+    mx &= 7;
+    my &= 7;
+    // FIXME bilinear filter only needs 0/1 pixels, not 3/4
+    // we use +7 because the last 7 pixels of each sbrow can be changed in
+    // the longest loopfilter of the next sbrow
+    th = (y + bh + 4 * !!my + 7) >> 6;
+    ff_thread_await_progress(ref_frame, FFMAX(th, 0), 0);
+    // The arm/aarch64 _hv filters read one more row than what actually is
+    // needed, so switch to emulated edge one pixel sooner vertically
+    // (!!my * 5) than horizontally (!!mx * 4).
+    if (x < !!mx * 3 || y < !!my * 3 ||
+        x + !!mx * 4 > w - bw || y + !!my * 5 > h - bh) {
+        s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
+                                 ref - !!my * 3 * ref_stride - !!mx * 3 * bytesperpixel,
+                                 160, ref_stride,
+                                 bw + !!mx * 7, bh + !!my * 7,
+                                 x - !!mx * 3, y - !!my * 3, w, h);
+        ref = s->edge_emu_buffer + !!my * 3 * 160 + !!mx * 3 * bytesperpixel;
+        ref_stride = 160;
+    }
+    mc[!!mx][!!my](dst, dst_stride, ref, ref_stride, bh, mx << 1, my << 1);
+}
+
+static av_always_inline void mc_chroma_unscaled(VP9Context *s, vp9_mc_func (*mc)[2],
+                                                uint8_t *dst_u, uint8_t *dst_v,
+                                                ptrdiff_t dst_stride,
+                                                const uint8_t *ref_u, ptrdiff_t src_stride_u,
+                                                const uint8_t *ref_v, ptrdiff_t src_stride_v,
+                                                ThreadFrame *ref_frame,
+                                                ptrdiff_t y, ptrdiff_t x, const VP56mv *mv,
+                                                int bw, int bh, int w, int h, int bytesperpixel)
+{
+    int mx = mv->x * (1 << !s->ss_h), my = mv->y * (1 << !s->ss_v), th;
+
+    y += my >> 4;
+    x += mx >> 4;
+    ref_u += y * src_stride_u + x * bytesperpixel;
+    ref_v += y * src_stride_v + x * bytesperpixel;
+    mx &= 15;
+    my &= 15;
+    // FIXME bilinear filter only needs 0/1 pixels, not 3/4
+    // we use +7 because the last 7 pixels of each sbrow can be changed in
+    // the longest loopfilter of the next sbrow
+    th = (y + bh + 4 * !!my + 7) >> (6 - s->ss_v);
+    ff_thread_await_progress(ref_frame, FFMAX(th, 0), 0);
+    // The arm/aarch64 _hv filters read one more row than what actually is
+    // needed, so switch to emulated edge one pixel sooner vertically
+    // (!!my * 5) than horizontally (!!mx * 4).
+    if (x < !!mx * 3 || y < !!my * 3 ||
+        x + !!mx * 4 > w - bw || y + !!my * 5 > h - bh) {
+        s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
+                                 ref_u - !!my * 3 * src_stride_u - !!mx * 3 * bytesperpixel,
+                                 160, src_stride_u,
+                                 bw + !!mx * 7, bh + !!my * 7,
+                                 x - !!mx * 3, y - !!my * 3, w, h);
+        ref_u = s->edge_emu_buffer + !!my * 3 * 160 + !!mx * 3 * bytesperpixel;
+        mc[!!mx][!!my](dst_u, dst_stride, ref_u, 160, bh, mx, my);
+
+        s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
+                                 ref_v - !!my * 3 * src_stride_v - !!mx * 3 * bytesperpixel,
+                                 160, src_stride_v,
+                                 bw + !!mx * 7, bh + !!my * 7,
+                                 x - !!mx * 3, y - !!my * 3, w, h);
+        ref_v = s->edge_emu_buffer + !!my * 3 * 160 + !!mx * 3 * bytesperpixel;
+        mc[!!mx][!!my](dst_v, dst_stride, ref_v, 160, bh, mx, my);
+    } else {
+        mc[!!mx][!!my](dst_u, dst_stride, ref_u, src_stride_u, bh, mx, my);
+        mc[!!mx][!!my](dst_v, dst_stride, ref_v, src_stride_v, bh, mx, my);
+    }
+}
+
+#define mc_luma_dir(s, mc, dst, dst_ls, src, src_ls, tref, row, col, mv, \
+                    px, py, pw, ph, bw, bh, w, h, i) \
+    mc_luma_unscaled(s, s->dsp.mc, dst, dst_ls, src, src_ls, tref, row, col, \
+                     mv, bw, bh, w, h, bytesperpixel)
+#define mc_chroma_dir(s, mc, dstu, dstv, dst_ls, srcu, srcu_ls, srcv, srcv_ls, tref, \
+                      row, col, mv, px, py, pw, ph, bw, bh, w, h, i) \
+    mc_chroma_unscaled(s, s->dsp.mc, dstu, dstv, dst_ls, srcu, srcu_ls, srcv, srcv_ls, tref, \
+                       row, col, mv, bw, bh, w, h, bytesperpixel)
+#define SCALED 0
+#define FN(x) x##_8bpp
+#define BYTES_PER_PIXEL 1
+#include "vp9_mc_template.c"
+#undef FN
+#undef BYTES_PER_PIXEL
+#define FN(x) x##_16bpp
+#define BYTES_PER_PIXEL 2
+#include "vp9_mc_template.c"
+#undef mc_luma_dir
+#undef mc_chroma_dir
+#undef FN
+#undef BYTES_PER_PIXEL
+#undef SCALED
+
+static av_always_inline void mc_luma_scaled(VP9Context *s, vp9_scaled_mc_func smc,
+                                            vp9_mc_func (*mc)[2],
+                                            uint8_t *dst, ptrdiff_t dst_stride,
+                                            const uint8_t *ref, ptrdiff_t ref_stride,
+                                            ThreadFrame *ref_frame,
+                                            ptrdiff_t y, ptrdiff_t x, const VP56mv *in_mv,
+                                            int px, int py, int pw, int ph,
+                                            int bw, int bh, int w, int h, int bytesperpixel,
+                                            const uint16_t *scale, const uint8_t *step)
+{
+    if (s->s.frames[CUR_FRAME].tf.f->width == ref_frame->f->width &&
+        s->s.frames[CUR_FRAME].tf.f->height == ref_frame->f->height) {
+        mc_luma_unscaled(s, mc, dst, dst_stride, ref, ref_stride, ref_frame,
+                         y, x, in_mv, bw, bh, w, h, bytesperpixel);
+    } else {
+#define scale_mv(n, dim) (((int64_t)(n) * scale[dim]) >> 14)
+    int mx, my;
+    int refbw_m1, refbh_m1;
+    int th;
+    VP56mv mv;
+
+    mv.x = av_clip(in_mv->x, -(x + pw - px + 4) * 8, (s->cols * 8 - x + px + 3) * 8);
+    mv.y = av_clip(in_mv->y, -(y + ph - py + 4) * 8, (s->rows * 8 - y + py + 3) * 8);
+    // BUG libvpx seems to scale the two components separately. This introduces
+    // rounding errors but we have to reproduce them to be exactly compatible
+    // with the output from libvpx...
+    mx = scale_mv(mv.x * 2, 0) + scale_mv(x * 16, 0);
+    my = scale_mv(mv.y * 2, 1) + scale_mv(y * 16, 1);
+
+    y = my >> 4;
+    x = mx >> 4;
+    ref += y * ref_stride + x * bytesperpixel;
+    mx &= 15;
+    my &= 15;
+    refbw_m1 = ((bw - 1) * step[0] + mx) >> 4;
+    refbh_m1 = ((bh - 1) * step[1] + my) >> 4;
+    // FIXME bilinear filter only needs 0/1 pixels, not 3/4
+    // we use +7 because the last 7 pixels of each sbrow can be changed in
+    // the longest loopfilter of the next sbrow
+    th = (y + refbh_m1 + 4 + 7) >> 6;
+    ff_thread_await_progress(ref_frame, FFMAX(th, 0), 0);
+    // The arm/aarch64 _hv filters read one more row than what actually is
+    // needed, so switch to emulated edge one pixel sooner vertically
+    // (y + 5 >= h - refbh_m1) than horizontally (x + 4 >= w - refbw_m1).
+    if (x < 3 || y < 3 || x + 4 >= w - refbw_m1 || y + 5 >= h - refbh_m1) {
+        s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
+                                 ref - 3 * ref_stride - 3 * bytesperpixel,
+                                 288, ref_stride,
+                                 refbw_m1 + 8, refbh_m1 + 8,
+                                 x - 3, y - 3, w, h);
+        ref = s->edge_emu_buffer + 3 * 288 + 3 * bytesperpixel;
+        ref_stride = 288;
+    }
+    smc(dst, dst_stride, ref, ref_stride, bh, mx, my, step[0], step[1]);
+    }
+}
+
+static av_always_inline void mc_chroma_scaled(VP9Context *s, vp9_scaled_mc_func smc,
+                                              vp9_mc_func (*mc)[2],
+                                              uint8_t *dst_u, uint8_t *dst_v,
+                                              ptrdiff_t dst_stride,
+                                              const uint8_t *ref_u, ptrdiff_t src_stride_u,
+                                              const uint8_t *ref_v, ptrdiff_t src_stride_v,
+                                              ThreadFrame *ref_frame,
+                                              ptrdiff_t y, ptrdiff_t x, const VP56mv *in_mv,
+                                              int px, int py, int pw, int ph,
+                                              int bw, int bh, int w, int h, int bytesperpixel,
+                                              const uint16_t *scale, const uint8_t *step)
+{
+    if (s->s.frames[CUR_FRAME].tf.f->width == ref_frame->f->width &&
+        s->s.frames[CUR_FRAME].tf.f->height == ref_frame->f->height) {
+        mc_chroma_unscaled(s, mc, dst_u, dst_v, dst_stride, ref_u, src_stride_u,
+                           ref_v, src_stride_v, ref_frame,
+                           y, x, in_mv, bw, bh, w, h, bytesperpixel);
+    } else {
+    int mx, my;
+    int refbw_m1, refbh_m1;
+    int th;
+    VP56mv mv;
+
+    if (s->ss_h) {
+        // BUG https://code.google.com/p/webm/issues/detail?id=820
+        mv.x = av_clip(in_mv->x, -(x + pw - px + 4) * 16, (s->cols * 4 - x + px + 3) * 16);
+        mx = scale_mv(mv.x, 0) + (scale_mv(x * 16, 0) & ~15) + (scale_mv(x * 32, 0) & 15);
+    } else {
+        mv.x = av_clip(in_mv->x, -(x + pw - px + 4) * 8, (s->cols * 8 - x + px + 3) * 8);
+        mx = scale_mv(mv.x * 2, 0) + scale_mv(x * 16, 0);
+    }
+    if (s->ss_v) {
+        // BUG https://code.google.com/p/webm/issues/detail?id=820
+        mv.y = av_clip(in_mv->y, -(y + ph - py + 4) * 16, (s->rows * 4 - y + py + 3) * 16);
+        my = scale_mv(mv.y, 1) + (scale_mv(y * 16, 1) & ~15) + (scale_mv(y * 32, 1) & 15);
+    } else {
+        mv.y = av_clip(in_mv->y, -(y + ph - py + 4) * 8, (s->rows * 8 - y + py + 3) * 8);
+        my = scale_mv(mv.y * 2, 1) + scale_mv(y * 16, 1);
+    }
+#undef scale_mv
+    y = my >> 4;
+    x = mx >> 4;
+    ref_u += y * src_stride_u + x * bytesperpixel;
+    ref_v += y * src_stride_v + x * bytesperpixel;
+    mx &= 15;
+    my &= 15;
+    refbw_m1 = ((bw - 1) * step[0] + mx) >> 4;
+    refbh_m1 = ((bh - 1) * step[1] + my) >> 4;
+    // FIXME bilinear filter only needs 0/1 pixels, not 3/4
+    // we use +7 because the last 7 pixels of each sbrow can be changed in
+    // the longest loopfilter of the next sbrow
+    th = (y + refbh_m1 + 4 + 7) >> (6 - s->ss_v);
+    ff_thread_await_progress(ref_frame, FFMAX(th, 0), 0);
+    // The arm/aarch64 _hv filters read one more row than what actually is
+    // needed, so switch to emulated edge one pixel sooner vertically
+    // (y + 5 >= h - refbh_m1) than horizontally (x + 4 >= w - refbw_m1).
+    if (x < 3 || y < 3 || x + 4 >= w - refbw_m1 || y + 5 >= h - refbh_m1) {
+        s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
+                                 ref_u - 3 * src_stride_u - 3 * bytesperpixel,
+                                 288, src_stride_u,
+                                 refbw_m1 + 8, refbh_m1 + 8,
+                                 x - 3, y - 3, w, h);
+        ref_u = s->edge_emu_buffer + 3 * 288 + 3 * bytesperpixel;
+        smc(dst_u, dst_stride, ref_u, 288, bh, mx, my, step[0], step[1]);
+
+        s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
+                                 ref_v - 3 * src_stride_v - 3 * bytesperpixel,
+                                 288, src_stride_v,
+                                 refbw_m1 + 8, refbh_m1 + 8,
+                                 x - 3, y - 3, w, h);
+        ref_v = s->edge_emu_buffer + 3 * 288 + 3 * bytesperpixel;
+        smc(dst_v, dst_stride, ref_v, 288, bh, mx, my, step[0], step[1]);
+    } else {
+        smc(dst_u, dst_stride, ref_u, src_stride_u, bh, mx, my, step[0], step[1]);
+        smc(dst_v, dst_stride, ref_v, src_stride_v, bh, mx, my, step[0], step[1]);
+    }
+    }
+}
+
+#define mc_luma_dir(s, mc, dst, dst_ls, src, src_ls, tref, row, col, mv, \
+                    px, py, pw, ph, bw, bh, w, h, i) \
+    mc_luma_scaled(s, s->dsp.s##mc, s->dsp.mc, dst, dst_ls, src, src_ls, tref, row, col, \
+                   mv, px, py, pw, ph, bw, bh, w, h, bytesperpixel, \
+                   s->mvscale[b->ref[i]], s->mvstep[b->ref[i]])
+#define mc_chroma_dir(s, mc, dstu, dstv, dst_ls, srcu, srcu_ls, srcv, srcv_ls, tref, \
+                      row, col, mv, px, py, pw, ph, bw, bh, w, h, i) \
+    mc_chroma_scaled(s, s->dsp.s##mc, s->dsp.mc, dstu, dstv, dst_ls, srcu, srcu_ls, srcv, srcv_ls, tref, \
+                     row, col, mv, px, py, pw, ph, bw, bh, w, h, bytesperpixel, \
+                     s->mvscale[b->ref[i]], s->mvstep[b->ref[i]])
+#define SCALED 1
+#define FN(x) x##_scaled_8bpp
+#define BYTES_PER_PIXEL 1
+#include "vp9_mc_template.c"
+#undef FN
+#undef BYTES_PER_PIXEL
+#define FN(x) x##_scaled_16bpp
+#define BYTES_PER_PIXEL 2
+#include "vp9_mc_template.c"
+#undef mc_luma_dir
+#undef mc_chroma_dir
+#undef FN
+#undef BYTES_PER_PIXEL
+#undef SCALED
+
+static av_always_inline void inter_recon(AVCodecContext *avctx, int bytesperpixel)
+{
+    VP9Context *s = avctx->priv_data;
+    VP9Block *b = s->b;
+    int row = s->row, col = s->col;
+
+    if (s->mvscale[b->ref[0]][0] || (b->comp && s->mvscale[b->ref[1]][0])) {
+        if (bytesperpixel == 1) {
+            inter_pred_scaled_8bpp(avctx);
+        } else {
+            inter_pred_scaled_16bpp(avctx);
+        }
+    } else {
+        if (bytesperpixel == 1) {
+            inter_pred_8bpp(avctx);
+        } else {
+            inter_pred_16bpp(avctx);
+        }
+    }
+
+    if (!b->skip) {
+        /* mostly copied intra_recon() */
+
+        int w4 = ff_vp9_bwh_tab[1][b->bs][0] << 1, step1d = 1 << b->tx, n;
+        int h4 = ff_vp9_bwh_tab[1][b->bs][1] << 1, x, y, step = 1 << (b->tx * 2);
+        int end_x = FFMIN(2 * (s->cols - col), w4);
+        int end_y = FFMIN(2 * (s->rows - row), h4);
+        int tx = 4 * s->s.h.lossless + b->tx, uvtx = b->uvtx + 4 * s->s.h.lossless;
+        int uvstep1d = 1 << b->uvtx, p;
+        uint8_t *dst = s->dst[0];
+
+        // y itxfm add
+        for (n = 0, y = 0; y < end_y; y += step1d) {
+            uint8_t *ptr = dst;
+            for (x = 0; x < end_x; x += step1d,
+                 ptr += 4 * step1d * bytesperpixel, n += step) {
+                int eob = b->tx > TX_8X8 ? AV_RN16A(&s->eob[n]) : s->eob[n];
+
+                if (eob)
+                    s->dsp.itxfm_add[tx][DCT_DCT](ptr, s->y_stride,
+                                                  s->block + 16 * n * bytesperpixel, eob);
+            }
+            dst += 4 * s->y_stride * step1d;
+        }
+
+        // uv itxfm add
+        end_x >>= s->ss_h;
+        end_y >>= s->ss_v;
+        step = 1 << (b->uvtx * 2);
+        for (p = 0; p < 2; p++) {
+            dst = s->dst[p + 1];
+            for (n = 0, y = 0; y < end_y; y += uvstep1d) {
+                uint8_t *ptr = dst;
+                for (x = 0; x < end_x; x += uvstep1d,
+                     ptr += 4 * uvstep1d * bytesperpixel, n += step) {
+                    int eob = b->uvtx > TX_8X8 ? AV_RN16A(&s->uveob[p][n]) : s->uveob[p][n];
+
+                    if (eob)
+                        s->dsp.itxfm_add[uvtx][DCT_DCT](ptr, s->uv_stride,
+                                                        s->uvblock[p] + 16 * n * bytesperpixel, eob);
+                }
+                dst += 4 * uvstep1d * s->uv_stride;
+            }
+        }
+    }
+}
+
+void ff_vp9_inter_recon_8bpp(AVCodecContext *avctx)
+{
+    inter_recon(avctx, 1);
+}
+
+void ff_vp9_inter_recon_16bpp(AVCodecContext *avctx)
+{
+    inter_recon(avctx, 2);
+}