lavc: add a HEVC decoder.

Initially written by Guillaume Martres <smarter@ubuntu.com> as a GSoC
project. Further contributions by the OpenHEVC project and other
developers, namely:

Mickaël Raulet <mraulet@insa-rennes.fr>
Seppo Tomperi <seppo.tomperi@vtt.fi>
Gildas Cocherel <gildas.cocherel@laposte.net>
Khaled Jerbi <khaled_jerbi@yahoo.fr>
Wassim Hamidouche <wassim.hamidouche@insa-rennes.fr>
Vittorio Giovara <vittorio.giovara@gmail.com>
Jan Ekström <jeebjp@gmail.com>
Anton Khirnov <anton@khirnov.net>
Martin Storsjö <martin@martin.st>
Luca Barbato <lu_zero@gentoo.org>
Yusuke Nakamura <muken.the.vfrmaniac@gmail.com>

Signed-off-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 1366 insertions, 0 deletions

diff --git a/libavcodec/hevcdsp_template.c b/libavcodec/hevcdsp_template.c
new file mode 100644
index 0000000..6c4331a
--- /dev/null
+++ b/libavcodec/hevcdsp_template.c
@@ -0,0 +1,1366 @@
+/*
+ * HEVC video Decoder
+ *
+ * Copyright (C) 2012 - 2013 Guillaume Martres
+ *
+ * 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 "get_bits.h"
+#include "bit_depth_template.c"
+#include "hevcdsp.h"
+#include "hevc.h"
+
+#define SET(dst, x) (dst) = (x)
+#define SCALE(dst, x) (dst) = av_clip_int16(((x) + add) >> shift)
+#define ADD_AND_SCALE(dst, x) (dst) = av_clip_pixel((dst) + av_clip_int16(((x) + add) >> shift))
+
+static void FUNC(put_pcm)(uint8_t *_dst, ptrdiff_t _stride, int size,
+                          GetBitContext *gb, int pcm_bit_depth)
+{
+    int x, y;
+    pixel *dst = (pixel*)_dst;
+    ptrdiff_t stride = _stride / sizeof(pixel);
+
+    for (y = 0; y < size; y++) {
+        for (x = 0; x < size; x++)
+            dst[x] = get_bits(gb, pcm_bit_depth) << (BIT_DEPTH - pcm_bit_depth);
+        dst += stride;
+    }
+}
+
+static void FUNC(transquant_bypass4x4)(uint8_t *_dst, int16_t *coeffs, ptrdiff_t _stride)
+{
+    int x, y;
+    pixel *dst = (pixel*)_dst;
+    ptrdiff_t stride = _stride / sizeof(pixel);
+
+    for (y = 0; y < 4; y++) {
+        for (x = 0; x < 4; x++) {
+            dst[x] += *coeffs;
+            coeffs++;
+        }
+        dst += stride;
+    }
+
+}
+
+static void FUNC(transquant_bypass8x8)(uint8_t *_dst, int16_t *coeffs, ptrdiff_t _stride)
+{
+    int x, y;
+    pixel *dst = (pixel*)_dst;
+    ptrdiff_t stride = _stride / sizeof(pixel);
+
+    for (y = 0; y < 8; y++) {
+        for (x = 0; x < 8; x++) {
+            dst[x] += *coeffs;
+            coeffs++;
+        }
+        dst += stride;
+    }
+}
+
+static void FUNC(transquant_bypass16x16)(uint8_t *_dst, int16_t *coeffs, ptrdiff_t _stride)
+{
+    int x, y;
+    pixel *dst = (pixel*)_dst;
+    ptrdiff_t stride = _stride / sizeof(pixel);
+
+    for (y = 0; y < 16; y++) {
+        for (x = 0; x < 16; x++) {
+            dst[x] += *coeffs;
+            coeffs++;
+        }
+        dst += stride;
+    }
+
+}
+
+static void FUNC(transquant_bypass32x32)(uint8_t *_dst, int16_t *coeffs, ptrdiff_t _stride)
+{
+    int x, y;
+    pixel *dst = (pixel*)_dst;
+    ptrdiff_t stride = _stride / sizeof(pixel);
+
+    for (y = 0; y < 32; y++) {
+        for (x = 0; x < 32; x++) {
+            dst[x] += *coeffs;
+            coeffs++;
+        }
+        dst += stride;
+    }
+}
+
+static void FUNC(transform_skip)(uint8_t *_dst, int16_t *coeffs, ptrdiff_t _stride)
+{
+    pixel *dst = (pixel*)_dst;
+    ptrdiff_t stride = _stride / sizeof(pixel);
+    int size = 4;
+    int shift = 13 - BIT_DEPTH;
+#if BIT_DEPTH <= 13
+    int offset = 1 << (shift - 1);
+#else
+    int offset = 0;
+#endif
+    int x, y;
+    switch (size){
+        case 32:
+            for (y = 0; y < 32*32; y+=32) {
+                for (x = 0; x < 32; x++) {
+                    dst[x] = av_clip_pixel(dst[x] + ((coeffs[y + x] + offset) >> shift));
+                }
+                dst += stride;
+            }
+            break;
+        case 16:
+            for (y = 0; y < 16*16; y+=16) {
+                for (x = 0; x < 16; x++) {
+                    dst[x] = av_clip_pixel(dst[x] + ((coeffs[y + x] + offset) >> shift));
+                }
+                dst += stride;
+            }
+            break;
+        case 8:
+            for (y = 0; y < 8*8; y+=8) {
+                for (x = 0; x < 8; x++) {
+                    dst[x] = av_clip_pixel(dst[x] + ((coeffs[y + x] + offset) >> shift));
+                }
+                dst += stride;
+            }
+            break;
+        case 4:
+            for (y = 0; y < 4*4; y+=4) {
+                for (x = 0; x < 4; x++) {
+                    dst[x] = av_clip_pixel(dst[x] + ((coeffs[y + x] + offset) >> shift));
+                }
+                dst += stride;
+            }
+            break;
+    }
+}
+
+static void FUNC(transform_4x4_luma_add)(uint8_t *_dst, int16_t *coeffs, ptrdiff_t _stride)
+{
+#define TR_4x4_LUMA(dst, src, step, assign)                                     \
+    do {                                                                        \
+        int c0 = src[0*step] + src[2*step];                                     \
+        int c1 = src[2*step] + src[3*step];                                     \
+        int c2 = src[0*step] - src[3*step];                                     \
+        int c3 = 74 * src[1*step];                                              \
+                                                                                \
+        assign(dst[2*step], 74 * (src[0*step] - src[2*step] + src[3*step]));    \
+        assign(dst[0*step], 29 * c0 + 55 * c1 + c3);                            \
+        assign(dst[1*step], 55 * c2 - 29 * c1 + c3);                            \
+        assign(dst[3*step], 55 * c0 + 29 * c2 - c3);                            \
+    } while (0)
+
+    int i;
+    pixel *dst = (pixel*)_dst;
+    ptrdiff_t stride = _stride / sizeof(pixel);
+    int shift = 7;
+    int add = 1 << (shift - 1);
+    int16_t *src = coeffs;
+
+    for (i = 0; i < 4; i++) {
+        TR_4x4_LUMA(src, src, 4, SCALE);
+        src++;
+    }
+
+    shift = 20 - BIT_DEPTH;
+    add = 1 << (shift - 1);
+    for (i = 0; i < 4; i++) {
+        TR_4x4_LUMA(dst, coeffs, 1, ADD_AND_SCALE);
+        coeffs += 4;
+        dst += stride;
+    }
+
+#undef TR_4x4_LUMA
+}
+
+#define TR_4(dst, src, dstep, sstep, assign)                                    \
+    do {                                                                        \
+        const int e0 = transform[8*0][0] * src[0*sstep] +                       \
+                       transform[8*2][0] * src[2*sstep];                        \
+        const int e1 = transform[8*0][1] * src[0*sstep] +                       \
+                       transform[8*2][1] * src[2*sstep];                        \
+        const int o0 = transform[8*1][0] * src[1*sstep] +                       \
+                       transform[8*3][0] * src[3*sstep];                        \
+        const int o1 = transform[8*1][1] * src[1*sstep] +                       \
+                       transform[8*3][1] * src[3*sstep];                        \
+                                                                                \
+        assign(dst[0*dstep], e0 + o0);                                          \
+        assign(dst[1*dstep], e1 + o1);                                          \
+        assign(dst[2*dstep], e1 - o1);                                          \
+        assign(dst[3*dstep], e0 - o0);                                          \
+    } while (0)
+#define TR_4_1(dst, src) TR_4(dst, src, 4, 4, SCALE)
+#define TR_4_2(dst, src) TR_4(dst, src, 1, 1, ADD_AND_SCALE)
+
+static void FUNC(transform_4x4_add)(uint8_t *_dst, int16_t *coeffs, ptrdiff_t _stride)
+{
+    int i;
+    pixel *dst = (pixel*)_dst;
+    ptrdiff_t stride = _stride / sizeof(pixel);
+    int shift = 7;
+    int add = 1 << (shift - 1);
+    int16_t *src = coeffs;
+
+    for (i = 0; i < 4; i++) {
+        TR_4_1(src, src);
+        src++;
+    }
+
+    shift = 20 - BIT_DEPTH;
+    add = 1 << (shift - 1);
+    for (i = 0; i < 4; i++) {
+        TR_4_2(dst, coeffs);
+        coeffs += 4;
+        dst += stride;
+    }
+}
+
+#define TR_8(dst, src, dstep, sstep, assign)                \
+    do {                                                    \
+        int i, j;                                           \
+        int e_8[4];                                         \
+        int o_8[4] = { 0 };                                 \
+        for (i = 0; i < 4; i++)                             \
+            for (j = 1; j < 8; j += 2)                      \
+                o_8[i] += transform[4*j][i] * src[j*sstep]; \
+        TR_4(e_8, src, 1, 2*sstep, SET);                    \
+                                                            \
+        for (i = 0; i < 4; i++) {                           \
+            assign(dst[i*dstep], e_8[i] + o_8[i]);          \
+            assign(dst[(7-i)*dstep], e_8[i] - o_8[i]);      \
+        }                                                   \
+    } while (0)
+#define TR_16(dst, src, dstep, sstep, assign)                   \
+    do {                                                        \
+        int i, j;                                               \
+        int e_16[8];                                            \
+        int o_16[8] = { 0 };                                    \
+        for (i = 0; i < 8; i++)                                 \
+            for (j = 1; j < 16; j += 2)                         \
+                o_16[i] += transform[2*j][i] * src[j*sstep];    \
+        TR_8(e_16, src, 1, 2*sstep, SET);                       \
+                                                                \
+        for (i = 0; i < 8; i++) {                               \
+            assign(dst[i*dstep], e_16[i] + o_16[i]);            \
+            assign(dst[(15-i)*dstep], e_16[i] - o_16[i]);       \
+        }                                                       \
+    } while (0)
+#define TR_32(dst, src, dstep, sstep, assign)               \
+    do {                                                    \
+        int i, j;                                           \
+        int e_32[16];                                       \
+        int o_32[16] = { 0 };                               \
+        for (i = 0; i < 16; i++)                            \
+            for (j = 1; j < 32; j += 2)                     \
+                o_32[i] += transform[j][i] * src[j*sstep];  \
+        TR_16(e_32, src, 1, 2*sstep, SET);                \
+                                                            \
+        for (i = 0; i < 16; i++) {                          \
+            assign(dst[i*dstep], e_32[i] + o_32[i]);        \
+            assign(dst[(31-i)*dstep], e_32[i] - o_32[i]);   \
+        }                                                   \
+    } while (0)
+
+#define TR_8_1(dst, src) TR_8(dst, src, 8, 8, SCALE)
+#define TR_16_1(dst, src) TR_16(dst, src, 16, 16, SCALE)
+#define TR_32_1(dst, src) TR_32(dst, src, 32, 32, SCALE)
+
+#define TR_8_2(dst, src) TR_8(dst, src, 1, 1, ADD_AND_SCALE)
+#define TR_16_2(dst, src) TR_16(dst, src, 1, 1, ADD_AND_SCALE)
+#define TR_32_2(dst, src) TR_32(dst, src, 1, 1, ADD_AND_SCALE)
+
+static void FUNC(transform_8x8_add)(uint8_t *_dst, int16_t *coeffs, ptrdiff_t _stride)
+{
+    int i;
+    pixel *dst = (pixel*)_dst;
+    ptrdiff_t stride = _stride / sizeof(pixel);
+    int shift = 7;
+    int add = 1 << (shift - 1);
+    int16_t *src = coeffs;
+
+    for (i = 0; i < 8; i++) {
+        TR_8_1(src, src);
+        src++;
+    }
+
+    shift = 20 - BIT_DEPTH;
+    add = 1 << (shift - 1);
+    for (i = 0; i < 8; i++) {
+        TR_8_2(dst, coeffs);
+        coeffs += 8;
+        dst += stride;
+    }
+}
+
+static void FUNC(transform_16x16_add)(uint8_t *_dst, int16_t *coeffs, ptrdiff_t _stride)
+{
+    int i;
+    pixel *dst = (pixel*)_dst;
+    ptrdiff_t stride = _stride / sizeof(pixel);
+    int shift = 7;
+    int add = 1 << (shift - 1);
+    int16_t *src = coeffs;
+
+    for (i = 0; i < 16; i++) {
+        TR_16_1(src, src);
+        src++;
+    }
+
+    shift = 20 - BIT_DEPTH;
+    add = 1 << (shift - 1);
+    for (i = 0; i < 16; i++) {
+        TR_16_2(dst, coeffs);
+        coeffs += 16;
+        dst += stride;
+    }
+}
+
+static void FUNC(transform_32x32_add)(uint8_t *_dst, int16_t *coeffs, ptrdiff_t _stride)
+{
+#define IT32x32_even(i,w) ( src[ 0*w] * transform[ 0][i] ) + ( src[16*w] * transform[16][i] )
+#define IT32x32_odd(i,w)  ( src[ 8*w] * transform[ 8][i] ) + ( src[24*w] * transform[24][i] )
+#define IT16x16(i,w)      ( src[ 4*w] * transform[ 4][i] ) + ( src[12*w] * transform[12][i] ) + ( src[20*w] * transform[20][i] ) + ( src[28*w] * transform[28][i] )
+#define IT8x8(i,w)        ( src[ 2*w] * transform[ 2][i] ) + ( src[ 6*w] * transform[ 6][i] ) + ( src[10*w] * transform[10][i] ) + ( src[14*w] * transform[14][i] ) + \
+                          ( src[18*w] * transform[18][i] ) + ( src[22*w] * transform[22][i] ) + ( src[26*w] * transform[26][i] ) + ( src[30*w] * transform[30][i] )
+#define IT4x4(i,w)        ( src[ 1*w] * transform[ 1][i] ) + ( src[ 3*w] * transform[ 3][i] ) + ( src[ 5*w] * transform[ 5][i] ) + ( src[ 7*w] * transform[ 7][i] ) + \
+                          ( src[ 9*w] * transform[ 9][i] ) + ( src[11*w] * transform[11][i] ) + ( src[13*w] * transform[13][i] ) + ( src[15*w] * transform[15][i] ) + \
+                          ( src[17*w] * transform[17][i] ) + ( src[19*w] * transform[19][i] ) + ( src[21*w] * transform[21][i] ) + ( src[23*w] * transform[23][i] ) + \
+                          ( src[25*w] * transform[25][i] ) + ( src[27*w] * transform[27][i] ) + ( src[29*w] * transform[29][i] ) + ( src[31*w] * transform[31][i] )
+    int i;
+    pixel *dst = (pixel*)_dst;
+    ptrdiff_t stride = _stride / sizeof(pixel);
+    int shift = 7;
+    int add = 1 << (shift - 1);
+    int16_t *src = coeffs;
+
+    for (i = 0; i < 32; i++) {
+        TR_32_1(src, src);
+        src++;
+    }
+    src   = coeffs;
+    shift = 20 - BIT_DEPTH;
+    add   = 1 << (shift - 1);
+    for (i = 0; i < 32; i++) {
+        TR_32_2(dst, coeffs);
+        coeffs += 32;
+        dst += stride;
+    }
+#undef IT32x32_even
+#undef IT32x32_odd
+#undef IT16x16
+#undef IT8x8
+#undef IT4x4
+}
+
+static void FUNC(sao_band_filter)(uint8_t *_dst, uint8_t *_src,
+                                  ptrdiff_t _stride, SAOParams *sao,
+                                  int *borders, int width, int height,
+                                  int c_idx, int class)
+{
+    pixel *dst = (pixel*)_dst;
+    pixel *src = (pixel*)_src;
+    ptrdiff_t stride = _stride / sizeof(pixel);
+    int offset_table[32] = { 0 };
+    int k, y, x;
+    int chroma = !!c_idx;
+    int shift = BIT_DEPTH - 5;
+    int *sao_offset_val = sao->offset_val[c_idx];
+    int sao_left_class  = sao->band_position[c_idx];
+    int init_y = 0, init_x = 0;
+
+    switch (class) {
+    case 0:
+        if (!borders[2])
+            width -= ((8 >> chroma) + 2);
+        if (!borders[3])
+            height -= ((4 >> chroma) + 2);
+        break;
+    case 1:
+        init_y = -(4 >> chroma) - 2;
+        if (!borders[2])
+            width -= ((8 >> chroma) + 2);
+        height = (4 >> chroma) + 2;
+        break;
+    case 2:
+        init_x = -(8 >> chroma) - 2;
+        width  =  (8 >> chroma) + 2;
+        if (!borders[3])
+            height -= ((4 >> chroma) + 2);
+        break;
+    case 3:
+        init_y = -(4 >> chroma) - 2;
+        init_x = -(8 >> chroma) - 2;
+        width  =  (8 >> chroma) + 2;
+        height =  (4 >> chroma) + 2;
+        break;
+    }
+
+    dst = dst + (init_y * stride + init_x);
+    src = src + (init_y * stride + init_x);
+    for (k = 0; k < 4; k++)
+        offset_table[(k + sao_left_class) & 31] = sao_offset_val[k + 1];
+    for (y = 0; y < height; y++) {
+        for (x = 0; x < width; x++)
+            dst[x] = av_clip_pixel(src[x] + offset_table[av_clip_pixel(src[x] >> shift)]);
+        dst += stride;
+        src += stride;
+    }
+}
+
+static void FUNC(sao_band_filter_0)(uint8_t *dst, uint8_t *src,
+                                    ptrdiff_t stride, SAOParams *sao,
+                                    int *borders, int width, int height,
+                                    int c_idx)
+{
+    FUNC(sao_band_filter)(dst, src, stride, sao, borders, width, height, c_idx, 0);
+}
+
+static void FUNC(sao_band_filter_1)(uint8_t *dst, uint8_t *src,
+                                    ptrdiff_t stride, SAOParams *sao,
+                                    int *borders, int width, int height,
+                                    int c_idx)
+{
+    FUNC(sao_band_filter)(dst, src, stride, sao, borders, width, height, c_idx, 1);
+}
+
+static void FUNC(sao_band_filter_2)(uint8_t *dst, uint8_t *src,
+                                    ptrdiff_t stride, SAOParams *sao,
+                                    int *borders, int width, int height,
+                                    int c_idx)
+{
+    FUNC(sao_band_filter)(dst, src, stride, sao, borders, width, height, c_idx, 2);
+}
+
+static void FUNC(sao_band_filter_3)(uint8_t *_dst, uint8_t *_src,
+                                    ptrdiff_t _stride, SAOParams *sao,
+                                    int *borders, int width, int height,
+                                    int c_idx)
+{
+    FUNC(sao_band_filter)(_dst, _src, _stride, sao, borders, width, height, c_idx, 3);
+}
+
+static void FUNC(sao_edge_filter_0)(uint8_t *_dst, uint8_t *_src,
+                                    ptrdiff_t _stride, SAOParams *sao,
+                                    int *borders, int _width, int _height,
+                                    int c_idx,
+                                    uint8_t vert_edge, uint8_t horiz_edge, uint8_t diag_edge)
+{
+    int x, y;
+    pixel *dst = (pixel*)_dst;
+    pixel *src = (pixel*)_src;
+    ptrdiff_t stride = _stride / sizeof(pixel);
+    int chroma = !!c_idx;
+    int *sao_offset_val = sao->offset_val[c_idx];
+    int sao_eo_class = sao->eo_class[c_idx];
+
+    static const int8_t pos[4][2][2] = {
+        {{ -1,  0}, { 1, 0}}, // horizontal
+        {{  0, -1}, { 0, 1}}, // vertical
+        {{ -1, -1}, { 1, 1}}, // 45 degree
+        {{  1, -1}, {-1, 1}}, // 135 degree
+    };
+    static const uint8_t edge_idx[] = { 1, 2, 0, 3, 4 };
+
+    int init_x = 0, init_y = 0, width = _width, height = _height;
+
+#define CMP(a, b) ((a) > (b) ? 1 : ((a) == (b) ? 0 : -1))
+
+    if (!borders[2])
+        width -= (8 >> chroma) + 2;
+    if (!borders[3])
+        height -= (4 >> chroma) + 2;
+
+    dst = dst + (init_y * stride + init_x);
+    src = src + (init_y * stride + init_x);
+    init_y = init_x = 0;
+    if (sao_eo_class != SAO_EO_VERT) {
+        if (borders[0]) {
+            int offset_val = sao_offset_val[0];
+            int y_stride   = 0;
+            for (y = 0; y < height; y++) {
+                dst[y_stride] = av_clip_pixel(src[y_stride] + offset_val);
+                y_stride += stride;
+            }
+            init_x = 1;
+        }
+        if (borders[2]) {
+            int offset_val = sao_offset_val[0];
+            int x_stride   = width - 1;
+            for (x = 0; x < height; x++) {
+                dst[x_stride] = av_clip_pixel(src[x_stride] + offset_val);
+                x_stride += stride;
+            }
+            width --;
+        }
+
+    }
+    if (sao_eo_class != SAO_EO_HORIZ ) {
+        if (borders[1]){
+            int offset_val = sao_offset_val[0];
+            for (x = init_x; x < width; x++) {
+                dst[x] = av_clip_pixel(src[x] + offset_val);
+            }
+            init_y = 1;
+        }
+        if (borders[3]){
+            int offset_val = sao_offset_val[0];
+            int y_stride   = stride * (height - 1);
+            for (x = init_x; x < width; x++) {
+                dst[x + y_stride] = av_clip_pixel(src[x + y_stride] + offset_val);
+            }
+            height--;
+        }
+    }
+    {
+        int y_stride     = init_y * stride;
+        int pos_0_0      = pos[sao_eo_class][0][0];
+        int pos_0_1      = pos[sao_eo_class][0][1];
+        int pos_1_0      = pos[sao_eo_class][1][0];
+        int pos_1_1      = pos[sao_eo_class][1][1];
+
+        int y_stride_0_1 = (init_y + pos_0_1) * stride;
+        int y_stride_1_1 = (init_y + pos_1_1) * stride;
+        for (y = init_y; y < height; y++) {
+            for (x = init_x; x < width; x++) {
+                int diff0         = CMP(src[x + y_stride], src[x + pos_0_0 + y_stride_0_1]);
+                int diff1         = CMP(src[x + y_stride], src[x + pos_1_0 + y_stride_1_1]);
+                int offset_val    = edge_idx[2 + diff0 + diff1];
+                dst[x + y_stride] = av_clip_pixel(src[x + y_stride] + sao_offset_val[offset_val]);
+            }
+            y_stride     += stride;
+            y_stride_0_1 += stride;
+            y_stride_1_1 += stride;
+        }
+    }
+
+    {
+        // Restore pixels that can't be modified
+        int save_upper_left = !diag_edge && sao_eo_class == SAO_EO_135D && !borders[0] && !borders[1];
+        if (vert_edge && sao_eo_class != SAO_EO_VERT)
+            for (y = init_y+save_upper_left; y< height; y++)
+                dst[y*stride] = src[y*stride];
+        if(horiz_edge && sao_eo_class != SAO_EO_HORIZ)
+            for(x = init_x+save_upper_left; x<width; x++)
+                dst[x] = src[x];
+        if(diag_edge && sao_eo_class == SAO_EO_135D)
+            dst[0] = src[0];
+    }
+
+#undef CMP
+}
+
+static void FUNC(sao_edge_filter_1)(uint8_t *_dst, uint8_t *_src,
+                                    ptrdiff_t _stride, SAOParams *sao,
+                                    int *borders, int _width, int _height,
+                                    int c_idx,
+                                    uint8_t vert_edge, uint8_t horiz_edge, uint8_t diag_edge)
+{
+    int x, y;
+    pixel *dst = (pixel*)_dst;
+    pixel *src = (pixel*)_src;
+    ptrdiff_t stride = _stride / sizeof(pixel);
+    int chroma = !!c_idx;
+    int *sao_offset_val = sao->offset_val[c_idx];
+    int sao_eo_class = sao->eo_class[c_idx];
+
+    static const int8_t pos[4][2][2] = {
+        {{ -1,  0}, { 1, 0 }}, // horizontal
+        {{  0, -1}, { 0, 1 }}, // vertical
+        {{ -1, -1}, { 1, 1 }}, // 45 degree
+        {{  1, -1}, {-1, 1 }}, // 135 degree
+    };
+    static const uint8_t edge_idx[] = { 1, 2, 0, 3, 4 };
+
+    int init_x = 0, init_y = 0, width = _width, height = _height;
+
+#define CMP(a, b) ((a) > (b) ? 1 : ((a) == (b) ? 0 : -1))
+
+    init_y = -(4 >> chroma) - 2;
+    if (!borders[2])
+        width -= (8 >> chroma) + 2;
+    height = (4 >> chroma) + 2;
+
+    dst = dst + (init_y * stride + init_x);
+    src = src + (init_y * stride + init_x);
+    init_y = init_x = 0;
+    if (sao_eo_class != SAO_EO_VERT) {
+        if (borders[0]) {
+            int offset_val = sao_offset_val[0];
+            int y_stride   = 0;
+            for (y = 0; y < height; y++) {
+                dst[y_stride] = av_clip_pixel(src[y_stride] + offset_val);
+                y_stride += stride;
+            }
+            init_x = 1;
+        }
+        if (borders[2]) {
+            int offset_val = sao_offset_val[0];
+            int x_stride   = width - 1;
+            for (x = 0; x < height; x++) {
+                dst[x_stride] = av_clip_pixel(src[x_stride] + offset_val);
+                x_stride += stride;
+            }
+            width--;
+        }
+
+    }
+    {
+        int y_stride     = init_y * stride;
+        int pos_0_0      = pos[sao_eo_class][0][0];
+        int pos_0_1      = pos[sao_eo_class][0][1];
+        int pos_1_0      = pos[sao_eo_class][1][0];
+        int pos_1_1      = pos[sao_eo_class][1][1];
+
+        int y_stride_0_1 = (init_y + pos_0_1) * stride;
+        int y_stride_1_1 = (init_y + pos_1_1) * stride;
+        for (y = init_y; y < height; y++) {
+            for (x = init_x; x < width; x++) {
+                int diff0         = CMP(src[x + y_stride], src[x + pos_0_0 + y_stride_0_1]);
+                int diff1         = CMP(src[x + y_stride], src[x + pos_1_0 + y_stride_1_1]);
+                int offset_val    = edge_idx[2 + diff0 + diff1];
+                dst[x + y_stride] = av_clip_pixel(src[x + y_stride] + sao_offset_val[offset_val]);
+            }
+            y_stride     += stride;
+            y_stride_0_1 += stride;
+            y_stride_1_1 += stride;
+        }
+    }
+
+    {
+        // Restore pixels that can't be modified
+        int save_lower_left = !diag_edge && sao_eo_class == SAO_EO_45D && !borders[0];
+        if(vert_edge && sao_eo_class != SAO_EO_VERT)
+            for(y = init_y; y< height-save_lower_left; y++)
+                dst[y*stride] = src[y*stride];
+        if(horiz_edge && sao_eo_class != SAO_EO_HORIZ)
+            for(x = init_x+save_lower_left; x<width; x++)
+                dst[(height-1)*stride+x] = src[(height-1)*stride+x];
+        if(diag_edge && sao_eo_class == SAO_EO_45D)
+            dst[stride*(height-1)] = src[stride*(height-1)];
+    }
+
+#undef CMP
+}
+
+static void FUNC(sao_edge_filter_2)(uint8_t *_dst, uint8_t *_src,
+                                    ptrdiff_t _stride, SAOParams *sao,
+                                    int *borders, int _width, int _height,
+                                    int c_idx,
+                                    uint8_t vert_edge, uint8_t horiz_edge, uint8_t diag_edge)
+{
+    int x, y;
+    pixel *dst = (pixel*)_dst;
+    pixel *src = (pixel*)_src;
+    ptrdiff_t stride = _stride / sizeof(pixel);
+    int chroma = !!c_idx;
+    int *sao_offset_val = sao->offset_val[c_idx];
+    int sao_eo_class = sao->eo_class[c_idx];
+
+    static const int8_t pos[4][2][2] = {
+        {{ -1,  0}, { 1, 0}}, // horizontal
+        {{  0, -1}, { 0, 1}}, // vertical
+        {{ -1, -1}, { 1, 1}}, // 45 degree
+        {{  1, -1}, {-1, 1}}, // 135 degree
+    };
+    static const uint8_t edge_idx[] = { 1, 2, 0, 3, 4 };
+
+    int init_x = 0, init_y = 0, width = _width, height = _height;
+
+#define CMP(a, b) ((a) > (b) ? 1 : ((a) == (b) ? 0 : -1))
+
+    init_x = -(8 >> chroma) - 2;
+    width  =  (8 >> chroma) + 2;
+    if (!borders[3])
+        height -= (4 >> chroma) + 2;
+
+    dst = dst + (init_y * stride + init_x);
+    src = src + (init_y * stride + init_x);
+    init_y = init_x = 0;
+    if (sao_eo_class != SAO_EO_HORIZ) {
+        if (borders[1]){
+            int offset_val = sao_offset_val[0];
+            for (x = init_x; x < width; x++) {
+                dst[x] = av_clip_pixel(src[x] + offset_val);
+            }
+            init_y = 1;
+        }
+        if (borders[3]){
+            int offset_val = sao_offset_val[0];
+            int y_stride   = stride * (height - 1);
+            for (x = init_x; x < width; x++) {
+                dst[x + y_stride] = av_clip_pixel(src[x + y_stride] + offset_val);
+            }
+            height--;
+        }
+    }
+    {
+        int y_stride     = init_y * stride;
+        int pos_0_0      = pos[sao_eo_class][0][0];
+        int pos_0_1      = pos[sao_eo_class][0][1];
+        int pos_1_0      = pos[sao_eo_class][1][0];
+        int pos_1_1      = pos[sao_eo_class][1][1];
+
+        int y_stride_0_1 = (init_y + pos_0_1) * stride;
+        int y_stride_1_1 = (init_y + pos_1_1) * stride;
+        for (y = init_y; y < height; y++) {
+            for (x = init_x; x < width; x++) {
+                int diff0         = CMP(src[x + y_stride], src[x + pos_0_0 + y_stride_0_1]);
+                int diff1         = CMP(src[x + y_stride], src[x + pos_1_0 + y_stride_1_1]);
+                int offset_val    = edge_idx[2 + diff0 + diff1];
+                dst[x + y_stride] = av_clip_pixel(src[x + y_stride] + sao_offset_val[offset_val]);
+            }
+            y_stride     += stride;
+            y_stride_0_1 += stride;
+            y_stride_1_1 += stride;
+        }
+    }
+
+    {
+        // Restore pixels that can't be modified
+        int save_upper_right = !diag_edge && sao_eo_class == SAO_EO_45D && !borders[1];
+        if(vert_edge && sao_eo_class != SAO_EO_VERT)
+            for(y = init_y+save_upper_right; y< height; y++)
+                dst[y*stride+width-1] = src[y*stride+width-1];
+        if(horiz_edge && sao_eo_class != SAO_EO_HORIZ)
+            for(x = init_x; x<width-save_upper_right; x++)
+                dst[x] = src[x];
+        if(diag_edge && sao_eo_class == SAO_EO_45D)
+            dst[width-1] = src[width-1];
+    }
+#undef CMP
+}
+
+static void FUNC(sao_edge_filter_3)(uint8_t *_dst, uint8_t *_src,
+                                    ptrdiff_t _stride, SAOParams *sao,
+                                    int *borders, int _width, int _height,
+                                    int c_idx,
+                                    uint8_t vert_edge, uint8_t horiz_edge, uint8_t diag_edge)
+{
+    int x, y;
+    pixel *dst = (pixel*)_dst;
+    pixel *src = (pixel*)_src;
+    ptrdiff_t stride = _stride / sizeof(pixel);
+    int chroma = !!c_idx;
+    int *sao_offset_val = sao->offset_val[c_idx];
+    int sao_eo_class    = sao->eo_class[c_idx];
+
+    static const int8_t pos[4][2][2] = {
+        {{ -1,  0}, { 1, 0}}, // horizontal
+        {{  0, -1}, { 0, 1}}, // vertical
+        {{ -1, -1}, { 1, 1}}, // 45 degree
+        {{  1, -1}, {-1, 1}}, // 135 degree
+    };
+    static const uint8_t edge_idx[] = { 1, 2, 0, 3, 4 };
+
+    int init_x = 0, init_y = 0, width = _width, height = _height;
+
+#define CMP(a, b) ((a) > (b) ? 1 : ((a) == (b) ? 0 : -1))
+
+    init_y = -(4 >> chroma) - 2;
+    init_x = -(8 >> chroma) - 2;
+    width  =  (8 >> chroma) + 2;
+    height =  (4 >> chroma) + 2;
+
+
+    dst = dst + (init_y * stride + init_x);
+    src = src + (init_y * stride + init_x);
+    init_y = init_x = 0;
+
+    {
+        int y_stride     = init_y * stride;
+        int pos_0_0      = pos[sao_eo_class][0][0];
+        int pos_0_1      = pos[sao_eo_class][0][1];
+        int pos_1_0      = pos[sao_eo_class][1][0];
+        int pos_1_1      = pos[sao_eo_class][1][1];
+
+        int y_stride_0_1 = (init_y + pos_0_1) * stride;
+        int y_stride_1_1 = (init_y + pos_1_1) * stride;
+
+        for (y = init_y; y < height; y++) {
+            for (x = init_x; x < width; x++) {
+                int diff0         = CMP(src[x + y_stride], src[x + pos_0_0 + y_stride_0_1]);
+                int diff1         = CMP(src[x + y_stride], src[x + pos_1_0 + y_stride_1_1]);
+                int offset_val    = edge_idx[2 + diff0 + diff1];
+                dst[x + y_stride] = av_clip_pixel(src[x + y_stride] + sao_offset_val[offset_val]);
+            }
+            y_stride     += stride;
+            y_stride_0_1 += stride;
+            y_stride_1_1 += stride;
+        }
+    }
+
+    {
+        // Restore pixels that can't be modified
+        int save_lower_right = !diag_edge && sao_eo_class == SAO_EO_135D;
+        if(vert_edge && sao_eo_class != SAO_EO_VERT)
+            for(y = init_y; y< height-save_lower_right; y++)
+                dst[y*stride+width-1] = src[y*stride+width-1];
+        if(horiz_edge && sao_eo_class != SAO_EO_HORIZ)
+            for(x = init_x; x<width-save_lower_right; x++)
+                dst[(height-1)*stride+x] = src[(height-1)*stride+x];
+        if(diag_edge && sao_eo_class == SAO_EO_135D)
+            dst[stride*(height-1)+width-1] = src[stride*(height-1)+width-1];
+    }
+#undef CMP
+}
+
+#undef SET
+#undef SCALE
+#undef ADD_AND_SCALE
+#undef TR_4
+#undef TR_4_1
+#undef TR_4_2
+#undef TR_8
+#undef TR_8_1
+#undef TR_8_2
+#undef TR_16
+#undef TR_16_1
+#undef TR_16_2
+#undef TR_32
+#undef TR_32_1
+#undef TR_32_2
+
+static void FUNC(put_hevc_qpel_pixels)(int16_t *dst, ptrdiff_t dststride,
+                                       uint8_t *_src, ptrdiff_t _srcstride,
+                                       int width, int height, int16_t* mcbuffer)
+{
+    int x, y;
+    pixel *src = (pixel*)_src;
+    ptrdiff_t srcstride = _srcstride / sizeof(pixel);
+
+    for (y = 0; y < height; y++) {
+        for (x = 0; x < width; x++)
+            dst[x] = src[x] << (14 - BIT_DEPTH);
+        src += srcstride;
+        dst += dststride;
+    }
+}
+
+#define QPEL_FILTER_1(src, stride)                                              \
+    (-src[x-3*stride] + 4*src[x-2*stride] - 10*src[x-stride] + 58*src[x] +      \
+     17*src[x+stride] - 5*src[x+2*stride] + 1*src[x+3*stride])
+#define QPEL_FILTER_2(src, stride)                                              \
+    (-src[x-3*stride] + 4*src[x-2*stride] - 11*src[x-stride] + 40*src[x] +      \
+     40*src[x+stride] - 11*src[x+2*stride] + 4*src[x+3*stride] - src[x+4*stride])
+#define QPEL_FILTER_3(src, stride)                                              \
+    (src[x-2*stride] - 5*src[x-stride] + 17*src[x] + 58*src[x+stride]           \
+     - 10*src[x+2*stride] + 4*src[x+3*stride] - src[x+4*stride])
+
+
+#define PUT_HEVC_QPEL_H(H)                                                     \
+static void FUNC(put_hevc_qpel_h ## H)(int16_t *dst,  ptrdiff_t dststride,     \
+                                       uint8_t *_src, ptrdiff_t _srcstride,    \
+                                       int width, int height,                  \
+                                       int16_t* mcbuffer)                      \
+{                                                                              \
+    int x, y;                                                                  \
+    pixel *src = (pixel*)_src;                                                 \
+    ptrdiff_t srcstride = _srcstride / sizeof(pixel);                          \
+                                                                               \
+    for (y = 0; y < height; y++) {                                             \
+        for (x = 0; x < width; x++)                                            \
+            dst[x] = QPEL_FILTER_ ## H (src, 1) >> (BIT_DEPTH - 8);            \
+        src += srcstride;                                                      \
+        dst += dststride;                                                      \
+    }                                                                          \
+}
+
+#define PUT_HEVC_QPEL_V(V)                                                     \
+static void FUNC(put_hevc_qpel_v ## V)(int16_t *dst,  ptrdiff_t dststride,     \
+                                       uint8_t *_src, ptrdiff_t _srcstride,    \
+                                       int width, int height,                  \
+                                       int16_t* mcbuffer)                      \
+{                                                                              \
+    int x, y;                                                                  \
+    pixel *src = (pixel*)_src;                                                 \
+    ptrdiff_t srcstride = _srcstride / sizeof(pixel);                          \
+                                                                               \
+    for (y = 0; y < height; y++)  {                                            \
+        for (x = 0; x < width; x++)                                            \
+            dst[x] = QPEL_FILTER_ ## V (src, srcstride) >> (BIT_DEPTH - 8);    \
+        src += srcstride;                                                      \
+        dst += dststride;                                                      \
+    }                                                                          \
+}
+
+#define PUT_HEVC_QPEL_HV(H, V)                                                       \
+static void FUNC(put_hevc_qpel_h ## H ## v ## V)(int16_t *dst,  ptrdiff_t dststride, \
+                                                 uint8_t *_src, ptrdiff_t _srcstride,\
+                                                 int width, int height,              \
+                                                 int16_t* mcbuffer)                  \
+{                                                                                    \
+    int x, y;                                                                        \
+    pixel *src = (pixel*)_src;                                                       \
+    ptrdiff_t srcstride = _srcstride / sizeof(pixel);                                \
+                                                                                     \
+    int16_t tmp_array[(MAX_PB_SIZE + 7)*MAX_PB_SIZE];                                \
+    int16_t *tmp = tmp_array;                                                        \
+                                                                                     \
+    src -= ff_hevc_qpel_extra_before[V] * srcstride;                                 \
+                                                                                     \
+    for (y = 0; y < height + ff_hevc_qpel_extra[V]; y++) {                           \
+        for (x = 0; x < width; x++)                                                  \
+            tmp[x] = QPEL_FILTER_ ## H (src, 1) >> (BIT_DEPTH - 8);                  \
+        src += srcstride;                                                            \
+        tmp += MAX_PB_SIZE;                                                          \
+    }                                                                                \
+                                                                                     \
+    tmp = tmp_array + ff_hevc_qpel_extra_before[V] * MAX_PB_SIZE;                    \
+                                                                                     \
+    for (y = 0; y < height; y++) {                                                   \
+        for (x = 0; x < width; x++)                                                  \
+            dst[x] = QPEL_FILTER_ ## V (tmp, MAX_PB_SIZE) >> 6;                      \
+        tmp += MAX_PB_SIZE;                                                          \
+        dst += dststride;                                                            \
+    }                                                                                \
+}
+
+PUT_HEVC_QPEL_H(1)
+PUT_HEVC_QPEL_H(2)
+PUT_HEVC_QPEL_H(3)
+PUT_HEVC_QPEL_V(1)
+PUT_HEVC_QPEL_V(2)
+PUT_HEVC_QPEL_V(3)
+PUT_HEVC_QPEL_HV(1, 1)
+PUT_HEVC_QPEL_HV(1, 2)
+PUT_HEVC_QPEL_HV(1, 3)
+PUT_HEVC_QPEL_HV(2, 1)
+PUT_HEVC_QPEL_HV(2, 2)
+PUT_HEVC_QPEL_HV(2, 3)
+PUT_HEVC_QPEL_HV(3, 1)
+PUT_HEVC_QPEL_HV(3, 2)
+PUT_HEVC_QPEL_HV(3, 3)
+
+static void FUNC(put_hevc_epel_pixels)(int16_t *dst, ptrdiff_t dststride,
+                                       uint8_t *_src, ptrdiff_t _srcstride,
+                                       int width, int height, int mx, int my,
+                                       int16_t* mcbuffer)
+{
+    int x, y;
+    pixel *src = (pixel*)_src;
+    ptrdiff_t srcstride = _srcstride / sizeof(pixel);
+
+    for (y = 0; y < height; y++) {
+        for (x = 0; x < width; x++) {
+            dst[x] = src[x] << (14 - BIT_DEPTH);
+        }
+        src += srcstride;
+        dst += dststride;
+    }
+}
+
+#define EPEL_FILTER(src, stride) \
+    (filter_0*src[x-stride] + filter_1*src[x] + filter_2*src[x+stride] + filter_3*src[x+2*stride])
+
+static void FUNC(put_hevc_epel_h)(int16_t *dst, ptrdiff_t dststride,
+                                  uint8_t *_src, ptrdiff_t _srcstride,
+                                  int width, int height, int mx, int my,
+                                  int16_t* mcbuffer)
+{
+    int x, y;
+    pixel *src = (pixel*)_src;
+    ptrdiff_t srcstride = _srcstride / sizeof(pixel);
+    const int8_t *filter = ff_hevc_epel_filters[mx - 1];
+    int8_t filter_0 = filter[0];
+    int8_t filter_1 = filter[1];
+    int8_t filter_2 = filter[2];
+    int8_t filter_3 = filter[3];
+    for (y = 0; y < height; y++) {
+        for (x = 0; x < width; x++) {
+            dst[x] = EPEL_FILTER(src, 1) >> (BIT_DEPTH - 8);
+        }
+        src += srcstride;
+        dst += dststride;
+    }
+}
+
+static void FUNC(put_hevc_epel_v)(int16_t *dst, ptrdiff_t dststride,
+                                  uint8_t *_src, ptrdiff_t _srcstride,
+                                  int width, int height, int mx, int my,
+                                  int16_t* mcbuffer)
+{
+    int x, y;
+    pixel *src = (pixel*)_src;
+    ptrdiff_t srcstride = _srcstride / sizeof(pixel);
+    const int8_t *filter = ff_hevc_epel_filters[my-1];
+    int8_t filter_0 = filter[0];
+    int8_t filter_1 = filter[1];
+    int8_t filter_2 = filter[2];
+    int8_t filter_3 = filter[3];
+
+    for (y = 0; y < height; y++) {
+        for (x = 0; x < width; x++) {
+            dst[x] = EPEL_FILTER(src, srcstride) >> (BIT_DEPTH - 8);
+        }
+        src += srcstride;
+        dst += dststride;
+    }
+}
+
+static void FUNC(put_hevc_epel_hv)(int16_t *dst, ptrdiff_t dststride,
+                                   uint8_t *_src, ptrdiff_t _srcstride,
+                                   int width, int height, int mx, int my,
+                                   int16_t* mcbuffer)
+{
+    int x, y;
+    pixel *src = (pixel*)_src;
+    ptrdiff_t srcstride = _srcstride / sizeof(pixel);
+    const int8_t *filter_h = ff_hevc_epel_filters[mx-1];
+    const int8_t *filter_v = ff_hevc_epel_filters[my-1];
+    int8_t filter_0 = filter_h[0];
+    int8_t filter_1 = filter_h[1];
+    int8_t filter_2 = filter_h[2];
+    int8_t filter_3 = filter_h[3];
+    int16_t tmp_array[(MAX_PB_SIZE + 3)*MAX_PB_SIZE];
+    int16_t *tmp = tmp_array;
+
+    src -= EPEL_EXTRA_BEFORE * srcstride;
+
+    for (y = 0; y < height + EPEL_EXTRA; y++) {
+        for (x = 0; x < width; x++) {
+            tmp[x] = EPEL_FILTER(src, 1) >> (BIT_DEPTH - 8);
+        }
+        src += srcstride;
+        tmp += MAX_PB_SIZE;
+    }
+
+    tmp = tmp_array + EPEL_EXTRA_BEFORE * MAX_PB_SIZE;
+    filter_0 = filter_v[0];
+    filter_1 = filter_v[1];
+    filter_2 = filter_v[2];
+    filter_3 = filter_v[3];
+    for (y = 0; y < height; y++) {
+        for (x = 0; x < width; x++) {
+            dst[x] = EPEL_FILTER(tmp, MAX_PB_SIZE) >> 6;
+        }
+        tmp += MAX_PB_SIZE;
+        dst += dststride;
+    }
+}
+
+static void FUNC(put_unweighted_pred)(uint8_t *_dst, ptrdiff_t _dststride,
+                                      int16_t *src, ptrdiff_t srcstride,
+                                      int width, int height)
+{
+    int x, y;
+    pixel *dst = (pixel*)_dst;
+    ptrdiff_t dststride = _dststride / sizeof(pixel);
+
+    int shift = 14 - BIT_DEPTH;
+#if BIT_DEPTH < 14
+    int offset = 1 << (shift - 1);
+#else
+    int offset = 0;
+#endif
+    for (y = 0; y < height; y++) {
+        for (x = 0; x < width; x++) {
+            dst[x] = av_clip_pixel((src[x] + offset) >> shift);
+        }
+        dst += dststride;
+        src += srcstride;
+    }
+}
+
+static void FUNC(put_weighted_pred_avg)(uint8_t *_dst, ptrdiff_t _dststride,
+                                        int16_t *src1, int16_t *src2,
+                                        ptrdiff_t srcstride,
+                                        int width, int height)
+{
+    int x, y;
+    pixel *dst = (pixel*)_dst;
+    ptrdiff_t dststride = _dststride / sizeof(pixel);
+
+    int shift = 14 + 1 - BIT_DEPTH;
+#if BIT_DEPTH < 14
+    int offset = 1 << (shift - 1);
+#else
+    int offset = 0;
+#endif
+
+    for (y = 0; y < height; y++) {
+        for (x = 0; x < width; x++) {
+            dst[x] = av_clip_pixel((src1[x] + src2[x] + offset) >> shift);
+        }
+        dst  += dststride;
+        src1 += srcstride;
+        src2 += srcstride;
+    }
+}
+
+static void FUNC(weighted_pred)(uint8_t denom, int16_t wlxFlag, int16_t olxFlag,
+                                uint8_t *_dst, ptrdiff_t _dststride,
+                                int16_t *src, ptrdiff_t srcstride,
+                                int width, int height)
+{
+    int shift;
+    int log2Wd;
+    int wx;
+    int ox;
+    int x , y;
+    int offset;
+    pixel *dst = (pixel*)_dst;
+    ptrdiff_t dststride = _dststride / sizeof(pixel);
+
+    shift  = 14 - BIT_DEPTH;
+    log2Wd = denom + shift;
+    offset = 1 << (log2Wd - 1);
+    wx = wlxFlag;
+    ox = olxFlag * (1 << (BIT_DEPTH - 8));
+
+    for (y = 0; y < height; y++) {
+        for (x = 0; x < width; x++) {
+            if (log2Wd >= 1) {
+                dst[x] = av_clip_pixel(((src[x] * wx + offset) >> log2Wd) + ox);
+            } else {
+                dst[x] = av_clip_pixel(src[x] * wx + ox);
+            }
+        }
+        dst  += dststride;
+        src  += srcstride;
+    }
+}
+
+static void FUNC(weighted_pred_avg)(uint8_t denom, int16_t wl0Flag, int16_t wl1Flag,
+                                    int16_t ol0Flag, int16_t ol1Flag,
+                                    uint8_t *_dst, ptrdiff_t _dststride,
+                                    int16_t *src1, int16_t *src2, ptrdiff_t srcstride,
+                                    int width, int height)
+{
+    int shift;
+    int log2Wd;
+    int w0;
+    int w1;
+    int o0;
+    int o1;
+    int x , y;
+    pixel *dst = (pixel*)_dst;
+    ptrdiff_t dststride = _dststride / sizeof(pixel);
+
+    shift  = 14 - BIT_DEPTH;
+    log2Wd = denom + shift;
+    w0 = wl0Flag;
+    w1 = wl1Flag;
+    o0 = (ol0Flag) * (1 << (BIT_DEPTH - 8));
+    o1 = (ol1Flag) * (1 << (BIT_DEPTH - 8));
+
+    for (y = 0; y < height; y++) {
+        for (x = 0; x < width; x++) {
+            dst[x] = av_clip_pixel((src1[x] * w0 + src2[x] * w1 +
+                                    ((o0 + o1 + 1) << log2Wd)) >> (log2Wd + 1));
+        }
+        dst  += dststride;
+        src1 += srcstride;
+        src2 += srcstride;
+    }
+}
+
+// line zero
+#define P3 pix[-4*xstride]
+#define P2 pix[-3*xstride]
+#define P1 pix[-2*xstride]
+#define P0 pix[-xstride]
+#define Q0 pix[0]
+#define Q1 pix[xstride]
+#define Q2 pix[2*xstride]
+#define Q3 pix[3*xstride]
+
+// line three. used only for deblocking decision
+#define TP3 pix[-4*xstride+3*ystride]
+#define TP2 pix[-3*xstride+3*ystride]
+#define TP1 pix[-2*xstride+3*ystride]
+#define TP0 pix[-xstride+3*ystride]
+#define TQ0 pix[3*ystride]
+#define TQ1 pix[xstride+3*ystride]
+#define TQ2 pix[2*xstride+3*ystride]
+#define TQ3 pix[3*xstride+3*ystride]
+
+static void FUNC(hevc_loop_filter_luma)(uint8_t *_pix, ptrdiff_t _xstride,
+                                        ptrdiff_t _ystride, int *_beta, int *_tc,
+                                        uint8_t *_no_p, uint8_t *_no_q)
+{
+    int d, j;
+    pixel *pix = (pixel*)_pix;
+    ptrdiff_t xstride = _xstride / sizeof(pixel);
+    ptrdiff_t ystride = _ystride / sizeof(pixel);
+
+    for (j = 0; j < 2; j++) {
+        const int dp0  = abs(P2 - 2 * P1 +  P0);
+        const int dq0  = abs(Q2 - 2 * Q1 +  Q0);
+        const int dp3  = abs(TP2 - 2 * TP1 + TP0);
+        const int dq3  = abs(TQ2 - 2 * TQ1 + TQ0);
+        const int d0   = dp0 + dq0;
+        const int d3   = dp3 + dq3;
+        int       beta = _beta[j] << (BIT_DEPTH - 8);
+        const int tc   = _tc[j] << (BIT_DEPTH - 8);
+        const int no_p = _no_p[j];
+        const int no_q = _no_q[j];
+
+        if (d0 + d3 >= beta /*|| tc <= 0*/) {
+            pix += 4 * ystride;
+            continue;
+        } else {
+            const int beta_3 = beta >> 3;
+            const int beta_2 = beta >> 2;
+            const int tc25 = ((tc * 5 + 1) >> 1);
+
+            if (abs( P3 -  P0) + abs( Q3 -  Q0) < beta_3 && abs( P0 -  Q0) < tc25 &&
+                abs(TP3 - TP0) + abs(TQ3 - TQ0) < beta_3 && abs(TP0 - TQ0) < tc25 &&
+                                      (d0 << 1) < beta_2 &&      (d3 << 1) < beta_2) {
+                // strong filtering
+                const int tc2 = tc << 1;
+                for (d = 0; d < 4; d++) {
+                    const int p3 = P3;
+                    const int p2 = P2;
+                    const int p1 = P1;
+                    const int p0 = P0;
+                    const int q0 = Q0;
+                    const int q1 = Q1;
+                    const int q2 = Q2;
+                    const int q3 = Q3;
+                    if (!no_p) {
+                        P0 = p0 + av_clip((( p2 + 2*p1 + 2*p0 + 2*q0 + q1 + 4 ) >> 3) - p0, -tc2, tc2);
+                        P1 = p1 + av_clip((( p2 + p1 + p0 + q0 + 2 ) >> 2) - p1, -tc2, tc2);
+                        P2 = p2 + av_clip((( 2*p3 + 3*p2 + p1 + p0 + q0 + 4 ) >> 3) - p2, -tc2, tc2);
+                    }
+                    if (!no_q) {
+                        Q0 = q0 + av_clip((( p1 + 2*p0 + 2*q0 + 2*q1 + q2 + 4 ) >> 3) - q0, -tc2, tc2);
+                        Q1 = q1 + av_clip((( p0 + q0 + q1 + q2 + 2 ) >> 2) - q1, -tc2, tc2);
+                        Q2 = q2 + av_clip((( 2*q3 + 3*q2 + q1 + q0 + p0 + 4 ) >> 3) - q2, -tc2, tc2);
+                    }
+                    pix += ystride;
+                }
+            } else { // normal filtering
+                int nd_p = 1;
+                int nd_q = 1;
+                const int tc_2 = tc >> 1;
+                if (dp0 + dp3 < ((beta + (beta >> 1)) >> 3))
+                    nd_p = 2;
+                if (dq0 + dq3 < ((beta + (beta >> 1)) >> 3))
+                    nd_q = 2;
+
+                for (d = 0; d < 4; d++) {
+                    const int p2 = P2;
+                    const int p1 = P1;
+                    const int p0 = P0;
+                    const int q0 = Q0;
+                    const int q1 = Q1;
+                    const int q2 = Q2;
+                    int delta0 = (9 * (q0 - p0) - 3 * (q1 - p1) + 8) >> 4;
+                    if (abs(delta0) < 10 * tc) {
+                        delta0 = av_clip(delta0, -tc, tc);
+                        if (!no_p)
+                            P0 = av_clip_pixel(p0 + delta0);
+                        if (!no_q)
+                            Q0 = av_clip_pixel(q0 - delta0);
+                        if (!no_p && nd_p > 1) {
+                            const int deltap1 = av_clip((((p2 + p0 + 1) >> 1) - p1 + delta0) >> 1, -tc_2, tc_2);
+                            P1 = av_clip_pixel(p1 + deltap1);
+                        }
+                        if (!no_q && nd_q > 1) {
+                            const int deltaq1 = av_clip((((q2 + q0 + 1) >> 1) - q1 - delta0) >> 1, -tc_2, tc_2);
+                            Q1 = av_clip_pixel(q1 + deltaq1);
+                        }
+                    }
+                    pix += ystride;
+                }
+            }
+        }
+    }
+}
+
+static void FUNC(hevc_loop_filter_chroma)(uint8_t *_pix, ptrdiff_t _xstride,
+                                          ptrdiff_t _ystride, int *_tc,
+                                          uint8_t *_no_p, uint8_t *_no_q)
+{
+    int d, j;
+    int no_p, no_q;
+    pixel *pix = (pixel*)_pix;
+    ptrdiff_t xstride = _xstride / sizeof(pixel);
+    ptrdiff_t ystride = _ystride / sizeof(pixel);
+
+    for (j = 0; j < 2; j++) {
+        const int tc = _tc[j] << (BIT_DEPTH - 8);
+        if (tc <= 0) {
+            pix += 4 * ystride;
+            continue;
+        }
+        no_p = _no_p[j];
+        no_q = _no_q[j];
+
+        for (d = 0; d < 4; d++) {
+            int delta0;
+            const int p1 = P1;
+            const int p0 = P0;
+            const int q0 = Q0;
+            const int q1 = Q1;
+            delta0 = av_clip((((q0 - p0) << 2) + p1 - q1 + 4) >> 3, -tc, tc);
+            if (!no_p)
+                P0 = av_clip_pixel(p0 + delta0);
+            if (!no_q)
+                Q0 = av_clip_pixel(q0 - delta0);
+            pix += ystride;
+        }
+    }
+}
+
+static void FUNC(hevc_h_loop_filter_chroma)(uint8_t *pix, ptrdiff_t stride,
+                                            int *tc, uint8_t *no_p, uint8_t *no_q)
+{
+    FUNC(hevc_loop_filter_chroma)(pix, stride, sizeof(pixel), tc, no_p, no_q);
+}
+
+static void FUNC(hevc_v_loop_filter_chroma)(uint8_t *pix, ptrdiff_t stride,
+                                            int *tc, uint8_t *no_p, uint8_t *no_q)
+{
+    FUNC(hevc_loop_filter_chroma)(pix, sizeof(pixel), stride, tc, no_p, no_q);
+}
+
+static void FUNC(hevc_h_loop_filter_luma)(uint8_t *pix, ptrdiff_t stride,
+                                          int *beta, int *tc, uint8_t *no_p,
+                                          uint8_t *no_q)
+{
+    FUNC(hevc_loop_filter_luma)(pix, stride, sizeof(pixel), beta, tc, no_p, no_q);
+}
+
+static void FUNC(hevc_v_loop_filter_luma)(uint8_t *pix, ptrdiff_t stride,
+                                          int *beta, int *tc, uint8_t *no_p,
+                                          uint8_t *no_q)
+{
+    FUNC(hevc_loop_filter_luma)(pix, sizeof(pixel), stride, beta, tc, no_p, no_q);
+}
+
+#undef P3
+#undef P2
+#undef P1
+#undef P0
+#undef Q0
+#undef Q1
+#undef Q2
+#undef Q3
+
+#undef TP3
+#undef TP2
+#undef TP1
+#undef TP0
+#undef TQ0
+#undef TQ1
+#undef TQ2
+#undef TQ3