Add 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>
Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Diego Biurrun <diego@biurrun.de>

Signed-off-by: Anton Khirnov <anton@khirnov.net>

1 files changed, 560 insertions, 0 deletions

diff --git a/libavcodec/hevcpred_template.c b/libavcodec/hevcpred_template.c
new file mode 100644
index 0000000000..27f4b9eed1
--- /dev/null
+++ b/libavcodec/hevcpred_template.c
@@ -0,0 +1,560 @@
+/*
+ * HEVC video decoder
+ *
+ * Copyright (C) 2012 - 2013 Guillaume Martres
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/pixdesc.h"
+
+#include "hevc.h"
+
+#include "bit_depth_template.c"
+
+#define POS(x, y) src[(x) + stride * (y)]
+
+static void FUNC(intra_pred)(HEVCContext *s, int x0, int y0, int log2_size, int c_idx)
+{
+#define PU(x) \
+    ((x) >> s->sps->log2_min_pu_size)
+#define MVF(x, y) \
+    (s->ref->tab_mvf[(x) + (y) * min_pu_width])
+#define MVF_PU(x, y) \
+    MVF(PU(x0 + ((x) << hshift)), PU(y0 + ((y) << vshift)))
+#define IS_INTRA(x, y) \
+    MVF_PU(x, y).is_intra
+#define MIN_TB_ADDR_ZS(x, y) \
+    s->pps->min_tb_addr_zs[(y) * s->sps->min_tb_width + (x)]
+#define EXTEND_LEFT(ptr, start, length) \
+        for (i = (start); i > (start) - (length); i--) \
+            ptr[i - 1] = ptr[i]
+#define EXTEND_RIGHT(ptr, start, length) \
+        for (i = (start); i < (start) + (length); i++) \
+            ptr[i] = ptr[i - 1]
+#define EXTEND_UP(ptr, start, length)   EXTEND_LEFT(ptr, start, length)
+#define EXTEND_DOWN(ptr, start, length) EXTEND_RIGHT(ptr, start, length)
+#define EXTEND_LEFT_CIP(ptr, start, length) \
+        for (i = (start); i > (start) - (length); i--) \
+            if (!IS_INTRA(i - 1, -1)) \
+                ptr[i - 1] = ptr[i]
+#define EXTEND_RIGHT_CIP(ptr, start, length) \
+        for (i = (start); i < (start) + (length); i++) \
+            if (!IS_INTRA(i, -1)) \
+                ptr[i] = ptr[i - 1]
+#define EXTEND_UP_CIP(ptr, start, length) \
+        for (i = (start); i > (start) - (length); i--) \
+            if (!IS_INTRA(-1, i - 1)) \
+                ptr[i - 1] = ptr[i]
+#define EXTEND_UP_CIP_0(ptr, start, length) \
+        for (i = (start); i > (start) - (length); i--) \
+            ptr[i - 1] = ptr[i]
+#define EXTEND_DOWN_CIP(ptr, start, length) \
+        for (i = (start); i < (start) + (length); i++) \
+            if (!IS_INTRA(-1, i)) \
+                ptr[i] = ptr[i - 1]
+    HEVCLocalContext *lc = &s->HEVClc;
+    int i;
+    int hshift = s->sps->hshift[c_idx];
+    int vshift = s->sps->vshift[c_idx];
+    int size = (1 << log2_size);
+    int size_in_luma = size << hshift;
+    int size_in_tbs = size_in_luma >> s->sps->log2_min_tb_size;
+    int x = x0 >> hshift;
+    int y = y0 >> vshift;
+    int x_tb = x0 >> s->sps->log2_min_tb_size;
+    int y_tb = y0 >> s->sps->log2_min_tb_size;
+    int cur_tb_addr = MIN_TB_ADDR_ZS(x_tb, y_tb);
+
+    ptrdiff_t stride = s->frame->linesize[c_idx] / sizeof(pixel);
+    pixel *src = (pixel*)s->frame->data[c_idx] + x + y * stride;
+
+    int min_pu_width = s->sps->min_pu_width;
+
+    enum IntraPredMode mode = c_idx ? lc->pu.intra_pred_mode_c :
+                              lc->tu.cur_intra_pred_mode;
+
+    pixel left_array[2 * MAX_TB_SIZE + 1];
+    pixel filtered_left_array[2 * MAX_TB_SIZE + 1];
+    pixel top_array[2 * MAX_TB_SIZE + 1];
+    pixel filtered_top_array[2 * MAX_TB_SIZE + 1];
+
+    pixel *left          = left_array + 1;
+    pixel *top           = top_array  + 1;
+    pixel *filtered_left = filtered_left_array + 1;
+    pixel *filtered_top  = filtered_top_array  + 1;
+
+    int cand_bottom_left = lc->na.cand_bottom_left && cur_tb_addr > MIN_TB_ADDR_ZS(x_tb - 1, y_tb + size_in_tbs);
+    int cand_left        = lc->na.cand_left;
+    int cand_up_left     = lc->na.cand_up_left;
+    int cand_up          = lc->na.cand_up;
+    int cand_up_right    = lc->na.cand_up_right && cur_tb_addr > MIN_TB_ADDR_ZS(x_tb + size_in_tbs, y_tb - 1);
+
+    int bottom_left_size = (FFMIN(y0 + 2 * size_in_luma, s->sps->height) -
+                            (y0 + size_in_luma)) >> vshift;
+    int top_right_size   = (FFMIN(x0 + 2 * size_in_luma, s->sps->width) -
+                            (x0 + size_in_luma)) >> hshift;
+
+    if (s->pps->constrained_intra_pred_flag == 1) {
+        int size_in_luma_pu = PU(size_in_luma);
+        int on_pu_edge_x    = !(x0 & ((1 << s->sps->log2_min_pu_size) - 1));
+        int on_pu_edge_y    = !(y0 & ((1 << s->sps->log2_min_pu_size) - 1));
+        if (!size_in_luma_pu)
+            size_in_luma_pu++;
+        if (cand_bottom_left == 1 && on_pu_edge_x) {
+            int x_left_pu   = PU(x0 - 1);
+            int y_bottom_pu = PU(y0 + size_in_luma);
+            int max = FFMIN(size_in_luma_pu, s->sps->min_pu_height - y_bottom_pu);
+            cand_bottom_left = 0;
+            for (i = 0; i < max; i++)
+                cand_bottom_left |= MVF(x_left_pu, y_bottom_pu + i).is_intra;
+        }
+        if (cand_left == 1 && on_pu_edge_x) {
+            int x_left_pu   = PU(x0 - 1);
+            int y_left_pu   = PU(y0);
+            int max = FFMIN(size_in_luma_pu, s->sps->min_pu_height - y_left_pu);
+            cand_left = 0;
+            for (i = 0; i < max; i++)
+                cand_left |= MVF(x_left_pu, y_left_pu + i).is_intra;
+        }
+        if (cand_up_left == 1) {
+            int x_left_pu   = PU(x0 - 1);
+            int y_top_pu    = PU(y0 - 1);
+            cand_up_left = MVF(x_left_pu, y_top_pu).is_intra;
+        }
+        if (cand_up == 1 && on_pu_edge_y) {
+            int x_top_pu    = PU(x0);
+            int y_top_pu    = PU(y0 - 1);
+            int max = FFMIN(size_in_luma_pu, s->sps->min_pu_width - x_top_pu);
+            cand_up = 0;
+            for (i = 0; i < max; i++)
+                cand_up |= MVF(x_top_pu + i, y_top_pu).is_intra;
+        }
+        if (cand_up_right == 1 && on_pu_edge_y) {
+            int y_top_pu    = PU(y0 - 1);
+            int x_right_pu  = PU(x0 + size_in_luma);
+            int max = FFMIN(size_in_luma_pu, s->sps->min_pu_width - x_right_pu);
+            cand_up_right = 0;
+            for (i = 0; i < max; i++)
+                cand_up_right |= MVF(x_right_pu + i, y_top_pu).is_intra;
+        }
+        for (i = 0; i < 2 * MAX_TB_SIZE; i++) {
+            left[i] = 128;
+            top[i]  = 128;
+        }
+    }
+    if (cand_bottom_left) {
+        for (i = size + bottom_left_size; i < (size << 1); i++)
+            if (IS_INTRA(-1, size + bottom_left_size - 1) ||
+                !s->pps->constrained_intra_pred_flag)
+                left[i] = POS(-1, size + bottom_left_size - 1);
+        for (i = size + bottom_left_size - 1; i >= size; i--)
+            if (IS_INTRA(-1, i) || !s->pps->constrained_intra_pred_flag)
+                left[i] = POS(-1, i);
+    }
+    if (cand_left)
+        for (i = size - 1; i >= 0; i--)
+            if (IS_INTRA(-1, i) || !s->pps->constrained_intra_pred_flag)
+                left[i] = POS(-1, i);
+    if (cand_up_left)
+        if (IS_INTRA(-1, -1) || !s->pps->constrained_intra_pred_flag) {
+            left[-1] = POS(-1, -1);
+            top[-1]  = left[-1];
+        }
+    if (cand_up)
+        for (i = size - 1; i >= 0; i--)
+            if (IS_INTRA(i, -1) || !s->pps->constrained_intra_pred_flag)
+                top[i] = POS(i, -1);
+    if (cand_up_right) {
+        for (i = size + top_right_size; i < (size << 1); i++)
+            if (IS_INTRA(size + top_right_size - 1, -1) ||
+                !s->pps->constrained_intra_pred_flag)
+                top[i] = POS(size + top_right_size - 1, -1);
+        for (i = size + top_right_size - 1; i >= size; i--)
+            if (IS_INTRA(i, -1) || !s->pps->constrained_intra_pred_flag)
+                top[i] = POS(i, -1);
+    }
+
+    if (s->pps->constrained_intra_pred_flag == 1) {
+        if (cand_bottom_left || cand_left || cand_up_left || cand_up || cand_up_right) {
+            int size_max_x = x0 + ((2 * size) << hshift) < s->sps->width ?
+                                    2 * size : (s->sps->width - x0) >> hshift;
+            int size_max_y = y0 + ((2 * size) << vshift) < s->sps->height ?
+                                    2 * size : (s->sps->height - y0) >> vshift;
+            int j = size + (cand_bottom_left? bottom_left_size: 0) -1;
+            if (!cand_up_right) {
+                size_max_x = x0 + ((size) << hshift) < s->sps->width ?
+                                                    size : (s->sps->width - x0) >> hshift;
+            }
+            if (!cand_bottom_left) {
+                size_max_y = y0 + (( size) << vshift) < s->sps->height ?
+                                                     size : (s->sps->height - y0) >> vshift;
+            }
+            if (cand_bottom_left || cand_left || cand_up_left) {
+                while (j > -1 && !IS_INTRA(-1, j))
+                    j--;
+                if (!IS_INTRA(-1, j)) {
+                    j = 0;
+                    while (j < size_max_x && !IS_INTRA(j, -1))
+                        j++;
+                    EXTEND_LEFT_CIP(top, j, j + 1);
+                    left[-1] = top[-1];
+                    j        = 0;
+                }
+            } else {
+                j = 0;
+                while (j < size_max_x && !IS_INTRA(j, -1))
+                    j++;
+                if (j > 0)
+                    if (x0 > 0) {
+                        EXTEND_LEFT_CIP(top, j, j + 1);
+                    } else {
+                        EXTEND_LEFT_CIP(top, j, j);
+                        top[-1] = top[0];
+                    }
+                left[-1] = top[-1];
+                j        = 0;
+            }
+            if (cand_bottom_left || cand_left) {
+                EXTEND_DOWN_CIP(left, j, size_max_y - j);
+            }
+            if (!cand_left) {
+                EXTEND_DOWN(left, 0, size);
+            }
+            if (!cand_bottom_left) {
+                EXTEND_DOWN(left, size, size);
+            }
+            if (x0 != 0 && y0 != 0) {
+                EXTEND_UP_CIP(left, size_max_y - 1, size_max_y);
+            } else if (x0 == 0) {
+                EXTEND_UP_CIP_0(left, size_max_y - 1, size_max_y);
+            } else {
+                EXTEND_UP_CIP(left, size_max_y - 1, size_max_y - 1);
+            }
+            top[-1] = left[-1];
+            if (y0 != 0) {
+                EXTEND_RIGHT_CIP(top, 0, size_max_x);
+            }
+        }
+    }
+    // Infer the unavailable samples
+    if (!cand_bottom_left) {
+        if (cand_left) {
+            EXTEND_DOWN(left, size, size);
+        } else if (cand_up_left) {
+            EXTEND_DOWN(left, 0, 2 * size);
+            cand_left = 1;
+        } else if (cand_up) {
+            left[-1] = top[0];
+            EXTEND_DOWN(left, 0, 2 * size);
+            cand_up_left = 1;
+            cand_left    = 1;
+        } else if (cand_up_right) {
+            EXTEND_LEFT(top, size, size);
+            left[-1] = top[0];
+            EXTEND_DOWN(left, 0, 2 * size);
+            cand_up      = 1;
+            cand_up_left = 1;
+            cand_left    = 1;
+        } else { // No samples available
+            top[0] = left[-1] = (1 << (BIT_DEPTH - 1));
+            EXTEND_RIGHT(top, 1, 2 * size - 1);
+            EXTEND_DOWN(left, 0, 2 * size);
+        }
+    }
+
+    if (!cand_left) {
+        EXTEND_UP(left, size, size);
+    }
+    if (!cand_up_left) {
+        left[-1] = left[0];
+    }
+    if (!cand_up) {
+        top[0] = left[-1];
+        EXTEND_RIGHT(top, 1, size - 1);
+    }
+    if (!cand_up_right) {
+        EXTEND_RIGHT(top, size, size);
+    }
+
+    top[-1] = left[-1];
+
+    // Filtering process
+    if (c_idx == 0 && mode != INTRA_DC && size != 4) {
+        int intra_hor_ver_dist_thresh[] = { 7, 1, 0 };
+        int min_dist_vert_hor = FFMIN(FFABS((int)mode - 26),
+                                      FFABS((int)mode - 10));
+        if (min_dist_vert_hor > intra_hor_ver_dist_thresh[log2_size - 3]) {
+            int threshold = 1 << (BIT_DEPTH - 5);
+            if (s->sps->sps_strong_intra_smoothing_enable_flag &&
+                log2_size == 5 &&
+                FFABS(top[-1]  + top[63]  - 2 * top[31])  < threshold &&
+                FFABS(left[-1] + left[63] - 2 * left[31]) < threshold) {
+                // We can't just overwrite values in top because it could be
+                // a pointer into src
+                filtered_top[-1] = top[-1];
+                filtered_top[63] = top[63];
+                for (i = 0; i < 63; i++)
+                    filtered_top[i] = ((64 - (i + 1)) * top[-1] +
+                                             (i + 1)  * top[63] + 32) >> 6;
+                for (i = 0; i < 63; i++)
+                    left[i] = ((64 - (i + 1)) * left[-1] +
+                                     (i + 1)  * left[63] + 32) >> 6;
+                top = filtered_top;
+            } else {
+                filtered_left[2 * size - 1] = left[2 * size - 1];
+                filtered_top[2 * size - 1]  = top[2 * size - 1];
+                for (i = 2 * size - 2; i >= 0; i--)
+                    filtered_left[i] = (left[i + 1] + 2 * left[i] +
+                                        left[i - 1] + 2) >> 2;
+                filtered_top[-1]  =
+                filtered_left[-1] = (left[0] + 2 * left[-1] + top[0] + 2) >> 2;
+                for (i = 2 * size - 2; i >= 0; i--)
+                    filtered_top[i] = (top[i + 1] + 2 * top[i] +
+                                       top[i - 1] + 2) >> 2;
+                left = filtered_left;
+                top  = filtered_top;
+            }
+        }
+    }
+
+    switch (mode) {
+    case INTRA_PLANAR:
+        s->hpc.pred_planar[log2_size - 2]((uint8_t *)src, (uint8_t *)top,
+                                          (uint8_t *)left, stride);
+        break;
+    case INTRA_DC:
+        s->hpc.pred_dc((uint8_t *)src, (uint8_t *)top,
+                       (uint8_t *)left, stride, log2_size, c_idx);
+        break;
+    default:
+        s->hpc.pred_angular[log2_size - 2]((uint8_t *)src, (uint8_t *)top,
+                                           (uint8_t *)left, stride, c_idx,
+                                           mode);
+        break;
+    }
+}
+
+static void FUNC(pred_planar_0)(uint8_t *_src, const uint8_t *_top,
+                                const uint8_t *_left,
+                                ptrdiff_t stride)
+{
+    int x, y;
+    pixel *src        = (pixel *)_src;
+    const pixel *top  = (const pixel *)_top;
+    const pixel *left = (const pixel *)_left;
+    for (y = 0; y < 4; y++)
+        for (x = 0; x < 4; x++)
+            POS(x, y) = ((3 - x) * left[y] + (x + 1) * top[4]  +
+                         (3 - y) * top[x]  + (y + 1) * left[4] + 4) >> 3;
+}
+
+static void FUNC(pred_planar_1)(uint8_t *_src, const uint8_t *_top,
+                                const uint8_t *_left, ptrdiff_t stride)
+{
+    int x, y;
+    pixel *src        = (pixel *)_src;
+    const pixel *top  = (const pixel *)_top;
+    const pixel *left = (const pixel *)_left;
+    for (y = 0; y < 8; y++)
+        for (x = 0; x < 8; x++)
+            POS(x, y) = ((7 - x) * left[y] + (x + 1) * top[8]  +
+                         (7 - y) * top[x]  + (y + 1) * left[8] + 8) >> 4;
+}
+
+static void FUNC(pred_planar_2)(uint8_t *_src, const uint8_t *_top,
+                                const uint8_t *_left, ptrdiff_t stride)
+{
+    int x, y;
+    pixel *src        = (pixel *)_src;
+    const pixel *top  = (const pixel *)_top;
+    const pixel *left = (const pixel *)_left;
+    for (y = 0; y < 16; y++)
+        for (x = 0; x < 16; x++)
+            POS(x, y) = ((15 - x) * left[y] + (x + 1) * top[16]  +
+                         (15 - y) * top[x]  + (y + 1) * left[16] + 16) >> 5;
+}
+
+static void FUNC(pred_planar_3)(uint8_t *_src, const uint8_t *_top,
+                                const uint8_t *_left, ptrdiff_t stride)
+{
+    int x, y;
+    pixel *src        = (pixel *)_src;
+    const pixel *top  = (const pixel *)_top;
+    const pixel *left = (const pixel *)_left;
+    for (y = 0; y < 32; y++)
+        for (x = 0; x < 32; x++)
+            POS(x, y) = ((31 - x) * left[y] + (x + 1) * top[32]  +
+                         (31 - y) * top[x]  + (y + 1) * left[32] + 32) >> 6;
+}
+
+static void FUNC(pred_dc)(uint8_t *_src, const uint8_t *_top,
+                          const uint8_t *_left,
+                          ptrdiff_t stride, int log2_size, int c_idx)
+{
+    int i, j, x, y;
+    int size          = (1 << log2_size);
+    pixel *src        = (pixel *)_src;
+    const pixel *top  = (const pixel *)_top;
+    const pixel *left = (const pixel *)_left;
+    int dc            = size;
+    pixel4 a;
+    for (i = 0; i < size; i++)
+        dc += left[i] + top[i];
+
+    dc >>= log2_size + 1;
+
+    a = PIXEL_SPLAT_X4(dc);
+
+    for (i = 0; i < size; i++)
+        for (j = 0; j < size / 4; j++)
+            AV_WN4PA(&POS(j * 4, i), a);
+
+    if (c_idx == 0 && size < 32) {
+        POS(0, 0) = (left[0] + 2 * dc + top[0] + 2) >> 2;
+        for (x = 1; x < size; x++)
+            POS(x, 0) = (top[x] + 3 * dc + 2) >> 2;
+        for (y = 1; y < size; y++)
+            POS(0, y) = (left[y] + 3 * dc + 2) >> 2;
+    }
+}
+
+static av_always_inline void FUNC(pred_angular)(uint8_t *_src,
+                                                const uint8_t *_top,
+                                                const uint8_t *_left,
+                                                ptrdiff_t stride, int c_idx,
+                                                int mode, int size)
+{
+    int x, y;
+    pixel *src        = (pixel *)_src;
+    const pixel *top  = (const pixel *)_top;
+    const pixel *left = (const pixel *)_left;
+
+    static const int intra_pred_angle[] = {
+         32,  26,  21,  17, 13,  9,  5, 2, 0, -2, -5, -9, -13, -17, -21, -26, -32,
+        -26, -21, -17, -13, -9, -5, -2, 0, 2,  5,  9, 13,  17,  21,  26,  32
+    };
+    static const int inv_angle[] = {
+        -4096, -1638, -910, -630, -482, -390, -315, -256, -315, -390, -482,
+        -630, -910, -1638, -4096
+    };
+
+    int angle = intra_pred_angle[mode - 2];
+    pixel ref_array[3 * MAX_TB_SIZE + 1];
+    pixel *ref_tmp = ref_array + size;
+    const pixel *ref;
+    int last = (size * angle) >> 5;
+
+    if (mode >= 18) {
+        ref = top - 1;
+        if (angle < 0 && last < -1) {
+            for (x = 0; x <= size; x++)
+                ref_tmp[x] = top[x - 1];
+            for (x = last; x <= -1; x++)
+                ref_tmp[x] = left[-1 + ((x * inv_angle[mode - 11] + 128) >> 8)];
+            ref = ref_tmp;
+        }
+
+        for (y = 0; y < size; y++) {
+            int idx  = ((y + 1) * angle) >> 5;
+            int fact = ((y + 1) * angle) & 31;
+            if (fact) {
+                for (x = 0; x < size; x++) {
+                    POS(x, y) = ((32 - fact) * ref[x + idx + 1] +
+                                       fact  * ref[x + idx + 2] + 16) >> 5;
+                }
+            } else {
+                for (x = 0; x < size; x++)
+                    POS(x, y) = ref[x + idx + 1];
+            }
+        }
+        if (mode == 26 && c_idx == 0 && size < 32) {
+            for (y = 0; y < size; y++)
+                POS(0, y) = av_clip_pixel(top[0] + ((left[y] - left[-1]) >> 1));
+        }
+    } else {
+        ref = left - 1;
+        if (angle < 0 && last < -1) {
+            for (x = 0; x <= size; x++)
+                ref_tmp[x] = left[x - 1];
+            for (x = last; x <= -1; x++)
+                ref_tmp[x] = top[-1 + ((x * inv_angle[mode - 11] + 128) >> 8)];
+            ref = ref_tmp;
+        }
+
+        for (x = 0; x < size; x++) {
+            int idx  = ((x + 1) * angle) >> 5;
+            int fact = ((x + 1) * angle) & 31;
+            if (fact) {
+                for (y = 0; y < size; y++) {
+                    POS(x, y) = ((32 - fact) * ref[y + idx + 1] +
+                                       fact  * ref[y + idx + 2] + 16) >> 5;
+                }
+            } else {
+                for (y = 0; y < size; y++)
+                    POS(x, y) = ref[y + idx + 1];
+            }
+        }
+        if (mode == 10 && c_idx == 0 && size < 32) {
+            for (x = 0; x < size; x++)
+                POS(x, 0) = av_clip_pixel(left[0] + ((top[x] - top[-1]) >> 1));
+        }
+    }
+}
+
+static void FUNC(pred_angular_0)(uint8_t *src, const uint8_t *top,
+                                 const uint8_t *left,
+                                 ptrdiff_t stride, int c_idx, int mode)
+{
+    FUNC(pred_angular)(src, top, left, stride, c_idx, mode, 1 << 2);
+}
+
+static void FUNC(pred_angular_1)(uint8_t *src, const uint8_t *top,
+                                 const uint8_t *left,
+                                 ptrdiff_t stride, int c_idx, int mode)
+{
+    FUNC(pred_angular)(src, top, left, stride, c_idx, mode, 1 << 3);
+}
+
+static void FUNC(pred_angular_2)(uint8_t *src, const uint8_t *top,
+                                 const uint8_t *left,
+                                 ptrdiff_t stride, int c_idx, int mode)
+{
+    FUNC(pred_angular)(src, top, left, stride, c_idx, mode, 1 << 4);
+}
+
+static void FUNC(pred_angular_3)(uint8_t *src, const uint8_t *top,
+                                 const uint8_t *left,
+                                 ptrdiff_t stride, int c_idx, int mode)
+{
+    FUNC(pred_angular)(src, top, left, stride, c_idx, mode, 1 << 5);
+}
+
+#undef EXTEND_LEFT_CIP
+#undef EXTEND_RIGHT_CIP
+#undef EXTEND_UP_CIP
+#undef EXTEND_DOWN_CIP
+#undef IS_INTRA
+#undef MVF_PU
+#undef MVF
+#undef PU
+#undef EXTEND_LEFT
+#undef EXTEND_RIGHT
+#undef EXTEND_UP
+#undef EXTEND_DOWN
+#undef MIN_TB_ADDR_ZS
+#undef POS