1 /*
2  * HEVC video decoder
3  *
4  * Copyright (C) 2012 - 2013 Guillaume Martres
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #include "libavutil/pixdesc.h"
24 
25 #include "bit_depth_template.c"
26 #include "hevcpred.h"
27 
28 #define POS(x, y) src[(x) + stride * (y)]
29 
FUNC(intra_pred)30 static av_always_inline void FUNC(intra_pred)(HEVCContext *s, int x0, int y0,
31                                               int log2_size, int c_idx)
32 {
33 #define PU(x) \
34     ((x) >> s->ps.sps->log2_min_pu_size)
35 #define MVF(x, y) \
36     (s->ref->tab_mvf[(x) + (y) * min_pu_width])
37 #define MVF_PU(x, y) \
38     MVF(PU(x0 + ((x) * (1 << hshift))), PU(y0 + ((y) * (1 << vshift))))
39 #define IS_INTRA(x, y) \
40     (MVF_PU(x, y).pred_flag == PF_INTRA)
41 #define MIN_TB_ADDR_ZS(x, y) \
42     s->ps.pps->min_tb_addr_zs[(y) * (s->ps.sps->tb_mask+2) + (x)]
43 #define EXTEND(ptr, val, len)         \
44 do {                                  \
45     pixel4 pix = PIXEL_SPLAT_X4(val); \
46     for (i = 0; i < (len); i += 4)    \
47         AV_WN4P(ptr + i, pix);        \
48 } while (0)
49 
50 #define EXTEND_RIGHT_CIP(ptr, start, length)                                   \
51         for (i = start; i < (start) + (length); i += 4)                        \
52             if (!IS_INTRA(i, -1))                                              \
53                 AV_WN4P(&ptr[i], a);                                           \
54             else                                                               \
55                 a = PIXEL_SPLAT_X4(ptr[i+3])
56 #define EXTEND_LEFT_CIP(ptr, start, length) \
57         for (i = start; i > (start) - (length); i--) \
58             if (!IS_INTRA(i - 1, -1)) \
59                 ptr[i - 1] = ptr[i]
60 #define EXTEND_UP_CIP(ptr, start, length)                                      \
61         for (i = (start); i > (start) - (length); i -= 4)                      \
62             if (!IS_INTRA(-1, i - 3))                                          \
63                 AV_WN4P(&ptr[i - 3], a);                                       \
64             else                                                               \
65                 a = PIXEL_SPLAT_X4(ptr[i - 3])
66 #define EXTEND_DOWN_CIP(ptr, start, length)                                    \
67         for (i = start; i < (start) + (length); i += 4)                        \
68             if (!IS_INTRA(-1, i))                                              \
69                 AV_WN4P(&ptr[i], a);                                           \
70             else                                                               \
71                 a = PIXEL_SPLAT_X4(ptr[i + 3])
72 
73     HEVCLocalContext *lc = s->HEVClc;
74     int i;
75     int hshift = s->ps.sps->hshift[c_idx];
76     int vshift = s->ps.sps->vshift[c_idx];
77     int size = (1 << log2_size);
78     int size_in_luma_h = size << hshift;
79     int size_in_tbs_h  = size_in_luma_h >> s->ps.sps->log2_min_tb_size;
80     int size_in_luma_v = size << vshift;
81     int size_in_tbs_v  = size_in_luma_v >> s->ps.sps->log2_min_tb_size;
82     int x = x0 >> hshift;
83     int y = y0 >> vshift;
84     int x_tb = (x0 >> s->ps.sps->log2_min_tb_size) & s->ps.sps->tb_mask;
85     int y_tb = (y0 >> s->ps.sps->log2_min_tb_size) & s->ps.sps->tb_mask;
86     int spin = c_idx && !size_in_tbs_v && ((2 * y0) & (1 << s->ps.sps->log2_min_tb_size));
87 
88     int cur_tb_addr = MIN_TB_ADDR_ZS(x_tb, y_tb);
89 
90     ptrdiff_t stride = s->frame->linesize[c_idx] / sizeof(pixel);
91     pixel *src = (pixel*)s->frame->data[c_idx] + x + y * stride;
92 
93     int min_pu_width = s->ps.sps->min_pu_width;
94 
95     enum IntraPredMode mode = c_idx ? lc->tu.intra_pred_mode_c :
96                               lc->tu.intra_pred_mode;
97     pixel4 a;
98     pixel  left_array[2 * MAX_TB_SIZE + 1];
99     pixel  filtered_left_array[2 * MAX_TB_SIZE + 1];
100     pixel  top_array[2 * MAX_TB_SIZE + 1];
101     pixel  filtered_top_array[2 * MAX_TB_SIZE + 1];
102 
103     pixel  *left          = left_array + 1;
104     pixel  *top           = top_array  + 1;
105     pixel  *filtered_left = filtered_left_array + 1;
106     pixel  *filtered_top  = filtered_top_array  + 1;
107     int cand_bottom_left = lc->na.cand_bottom_left && cur_tb_addr > MIN_TB_ADDR_ZS( x_tb - 1, (y_tb + size_in_tbs_v + spin) & s->ps.sps->tb_mask);
108     int cand_left        = lc->na.cand_left;
109     int cand_up_left     = lc->na.cand_up_left;
110     int cand_up          = lc->na.cand_up;
111     int cand_up_right    = lc->na.cand_up_right && !spin && cur_tb_addr > MIN_TB_ADDR_ZS((x_tb + size_in_tbs_h) & s->ps.sps->tb_mask, y_tb - 1);
112 
113     int bottom_left_size = (FFMIN(y0 + 2 * size_in_luma_v, s->ps.sps->height) -
114                            (y0 + size_in_luma_v)) >> vshift;
115     int top_right_size   = (FFMIN(x0 + 2 * size_in_luma_h, s->ps.sps->width) -
116                            (x0 + size_in_luma_h)) >> hshift;
117 
118     if (s->ps.pps->constrained_intra_pred_flag == 1) {
119         int size_in_luma_pu_v = PU(size_in_luma_v);
120         int size_in_luma_pu_h = PU(size_in_luma_h);
121         int on_pu_edge_x    = !av_mod_uintp2(x0, s->ps.sps->log2_min_pu_size);
122         int on_pu_edge_y    = !av_mod_uintp2(y0, s->ps.sps->log2_min_pu_size);
123         if (!size_in_luma_pu_h)
124             size_in_luma_pu_h++;
125         if (cand_bottom_left == 1 && on_pu_edge_x) {
126             int x_left_pu   = PU(x0 - 1);
127             int y_bottom_pu = PU(y0 + size_in_luma_v);
128             int max = FFMIN(size_in_luma_pu_v, s->ps.sps->min_pu_height - y_bottom_pu);
129             cand_bottom_left = 0;
130             for (i = 0; i < max; i += 2)
131                 cand_bottom_left |= (MVF(x_left_pu, y_bottom_pu + i).pred_flag == PF_INTRA);
132         }
133         if (cand_left == 1 && on_pu_edge_x) {
134             int x_left_pu   = PU(x0 - 1);
135             int y_left_pu   = PU(y0);
136             int max = FFMIN(size_in_luma_pu_v, s->ps.sps->min_pu_height - y_left_pu);
137             cand_left = 0;
138             for (i = 0; i < max; i += 2)
139                 cand_left |= (MVF(x_left_pu, y_left_pu + i).pred_flag == PF_INTRA);
140         }
141         if (cand_up_left == 1) {
142             int x_left_pu   = PU(x0 - 1);
143             int y_top_pu    = PU(y0 - 1);
144             cand_up_left = MVF(x_left_pu, y_top_pu).pred_flag == PF_INTRA;
145         }
146         if (cand_up == 1 && on_pu_edge_y) {
147             int x_top_pu    = PU(x0);
148             int y_top_pu    = PU(y0 - 1);
149             int max = FFMIN(size_in_luma_pu_h, s->ps.sps->min_pu_width - x_top_pu);
150             cand_up = 0;
151             for (i = 0; i < max; i += 2)
152                 cand_up |= (MVF(x_top_pu + i, y_top_pu).pred_flag == PF_INTRA);
153         }
154         if (cand_up_right == 1 && on_pu_edge_y) {
155             int y_top_pu    = PU(y0 - 1);
156             int x_right_pu  = PU(x0 + size_in_luma_h);
157             int max = FFMIN(size_in_luma_pu_h, s->ps.sps->min_pu_width - x_right_pu);
158             cand_up_right = 0;
159             for (i = 0; i < max; i += 2)
160                 cand_up_right |= (MVF(x_right_pu + i, y_top_pu).pred_flag == PF_INTRA);
161         }
162         memset(left, 128, 2 * MAX_TB_SIZE*sizeof(pixel));
163         memset(top , 128, 2 * MAX_TB_SIZE*sizeof(pixel));
164         top[-1] = 128;
165     }
166     if (cand_up_left) {
167         left[-1] = POS(-1, -1);
168         top[-1]  = left[-1];
169     }
170     if (cand_up)
171         memcpy(top, src - stride, size * sizeof(pixel));
172     if (cand_up_right) {
173         memcpy(top + size, src - stride + size, size * sizeof(pixel));
174         EXTEND(top + size + top_right_size, POS(size + top_right_size - 1, -1),
175                size - top_right_size);
176     }
177     if (cand_left)
178         for (i = 0; i < size; i++)
179             left[i] = POS(-1, i);
180     if (cand_bottom_left) {
181         for (i = size; i < size + bottom_left_size; i++)
182             left[i] = POS(-1, i);
183         EXTEND(left + size + bottom_left_size, POS(-1, size + bottom_left_size - 1),
184                size - bottom_left_size);
185     }
186 
187     if (s->ps.pps->constrained_intra_pred_flag == 1) {
188         if (cand_bottom_left || cand_left || cand_up_left || cand_up || cand_up_right) {
189             int size_max_x = x0 + ((2 * size) << hshift) < s->ps.sps->width ?
190                                     2 * size : (s->ps.sps->width - x0) >> hshift;
191             int size_max_y = y0 + ((2 * size) << vshift) < s->ps.sps->height ?
192                                     2 * size : (s->ps.sps->height - y0) >> vshift;
193             int j = size + (cand_bottom_left? bottom_left_size: 0) -1;
194             if (!cand_up_right) {
195                 size_max_x = x0 + ((size) << hshift) < s->ps.sps->width ?
196                                                     size : (s->ps.sps->width - x0) >> hshift;
197             }
198             if (!cand_bottom_left) {
199                 size_max_y = y0 + (( size) << vshift) < s->ps.sps->height ?
200                                                      size : (s->ps.sps->height - y0) >> vshift;
201             }
202             if (cand_bottom_left || cand_left || cand_up_left) {
203                 while (j > -1 && !IS_INTRA(-1, j))
204                     j--;
205                 if (!IS_INTRA(-1, j)) {
206                     j = 0;
207                     while (j < size_max_x && !IS_INTRA(j, -1))
208                         j++;
209                     EXTEND_LEFT_CIP(top, j, j + 1);
210                     left[-1] = top[-1];
211                 }
212             } else {
213                 j = 0;
214                 while (j < size_max_x && !IS_INTRA(j, -1))
215                     j++;
216                 if (j > 0)
217                     if (cand_up_left) {
218                         EXTEND_LEFT_CIP(top, j, j + 1);
219                     } else {
220                         EXTEND_LEFT_CIP(top, j, j);
221                         top[-1] = top[0];
222                     }
223                 left[-1] = top[-1];
224             }
225             left[-1] = top[-1];
226             if (cand_bottom_left || cand_left) {
227                 a = PIXEL_SPLAT_X4(left[-1]);
228                 EXTEND_DOWN_CIP(left, 0, size_max_y);
229             }
230             if (!cand_left)
231                 EXTEND(left, left[-1], size);
232             if (!cand_bottom_left)
233                 EXTEND(left + size, left[size - 1], size);
234             if (x0 != 0 && y0 != 0) {
235                 a = PIXEL_SPLAT_X4(left[size_max_y - 1]);
236                 EXTEND_UP_CIP(left, size_max_y - 1, size_max_y);
237                 if (!IS_INTRA(-1, - 1))
238                     left[-1] = left[0];
239             } else if (x0 == 0) {
240                 EXTEND(left, 0, size_max_y);
241             } else {
242                 a = PIXEL_SPLAT_X4(left[size_max_y - 1]);
243                 EXTEND_UP_CIP(left, size_max_y - 1, size_max_y);
244             }
245             top[-1] = left[-1];
246             if (y0 != 0) {
247                 a = PIXEL_SPLAT_X4(left[-1]);
248                 EXTEND_RIGHT_CIP(top, 0, size_max_x);
249             }
250         }
251     }
252     // Infer the unavailable samples
253     if (!cand_bottom_left) {
254         if (cand_left) {
255             EXTEND(left + size, left[size - 1], size);
256         } else if (cand_up_left) {
257             EXTEND(left, left[-1], 2 * size);
258             cand_left = 1;
259         } else if (cand_up) {
260             left[-1] = top[0];
261             EXTEND(left, left[-1], 2 * size);
262             cand_up_left = 1;
263             cand_left    = 1;
264         } else if (cand_up_right) {
265             EXTEND(top, top[size], size);
266             left[-1] = top[size];
267             EXTEND(left, left[-1], 2 * size);
268             cand_up      = 1;
269             cand_up_left = 1;
270             cand_left    = 1;
271         } else { // No samples available
272             left[-1] = (1 << (BIT_DEPTH - 1));
273             EXTEND(top,  left[-1], 2 * size);
274             EXTEND(left, left[-1], 2 * size);
275         }
276     }
277 
278     if (!cand_left)
279         EXTEND(left, left[size], size);
280     if (!cand_up_left) {
281         left[-1] = left[0];
282     }
283     if (!cand_up)
284         EXTEND(top, left[-1], size);
285     if (!cand_up_right)
286         EXTEND(top + size, top[size - 1], size);
287 
288     top[-1] = left[-1];
289 
290     // Filtering process
291     if (!s->ps.sps->intra_smoothing_disabled_flag && (c_idx == 0  || s->ps.sps->chroma_format_idc == 3)) {
292         if (mode != INTRA_DC && size != 4){
293             int intra_hor_ver_dist_thresh[] = { 7, 1, 0 };
294             int min_dist_vert_hor = FFMIN(FFABS((int)(mode - 26U)),
295                                           FFABS((int)(mode - 10U)));
296             if (min_dist_vert_hor > intra_hor_ver_dist_thresh[log2_size - 3]) {
297                 int threshold = 1 << (BIT_DEPTH - 5);
298                 if (s->ps.sps->sps_strong_intra_smoothing_enable_flag && c_idx == 0 &&
299                     log2_size == 5 &&
300                     FFABS(top[-1]  + top[63]  - 2 * top[31])  < threshold &&
301                     FFABS(left[-1] + left[63] - 2 * left[31]) < threshold) {
302                     // We can't just overwrite values in top because it could be
303                     // a pointer into src
304                     filtered_top[-1] = top[-1];
305                     filtered_top[63] = top[63];
306                     for (i = 0; i < 63; i++)
307                         filtered_top[i] = ((64 - (i + 1)) * top[-1] +
308                                            (i + 1)  * top[63] + 32) >> 6;
309                     for (i = 0; i < 63; i++)
310                         left[i] = ((64 - (i + 1)) * left[-1] +
311                                    (i + 1)  * left[63] + 32) >> 6;
312                     top = filtered_top;
313                 } else {
314                     filtered_left[2 * size - 1] = left[2 * size - 1];
315                     filtered_top[2 * size - 1]  = top[2 * size - 1];
316                     for (i = 2 * size - 2; i >= 0; i--)
317                         filtered_left[i] = (left[i + 1] + 2 * left[i] +
318                                             left[i - 1] + 2) >> 2;
319                     filtered_top[-1]  =
320                     filtered_left[-1] = (left[0] + 2 * left[-1] + top[0] + 2) >> 2;
321                     for (i = 2 * size - 2; i >= 0; i--)
322                         filtered_top[i] = (top[i + 1] + 2 * top[i] +
323                                            top[i - 1] + 2) >> 2;
324                     left = filtered_left;
325                     top  = filtered_top;
326                 }
327             }
328         }
329     }
330 
331     switch (mode) {
332     case INTRA_PLANAR:
333         s->hpc.pred_planar[log2_size - 2]((uint8_t *)src, (uint8_t *)top,
334                                           (uint8_t *)left, stride);
335         break;
336     case INTRA_DC:
337         s->hpc.pred_dc((uint8_t *)src, (uint8_t *)top,
338                        (uint8_t *)left, stride, log2_size, c_idx);
339         break;
340     default:
341         s->hpc.pred_angular[log2_size - 2]((uint8_t *)src, (uint8_t *)top,
342                                            (uint8_t *)left, stride, c_idx,
343                                            mode);
344         break;
345     }
346 }
347 
348 #define INTRA_PRED(size)                                                            \
349 static void FUNC(intra_pred_ ## size)(HEVCContext *s, int x0, int y0, int c_idx)    \
350 {                                                                                   \
351     FUNC(intra_pred)(s, x0, y0, size, c_idx);                                       \
352 }
353 
354 INTRA_PRED(2)
355 INTRA_PRED(3)
356 INTRA_PRED(4)
357 INTRA_PRED(5)
358 
359 #undef INTRA_PRED
360 
FUNC(pred_planar)361 static av_always_inline void FUNC(pred_planar)(uint8_t *_src, const uint8_t *_top,
362                                   const uint8_t *_left, ptrdiff_t stride,
363                                   int trafo_size)
364 {
365     int x, y;
366     pixel *src        = (pixel *)_src;
367     const pixel *top  = (const pixel *)_top;
368     const pixel *left = (const pixel *)_left;
369     int size = 1 << trafo_size;
370     for (y = 0; y < size; y++)
371         for (x = 0; x < size; x++)
372             POS(x, y) = ((size - 1 - x) * left[y] + (x + 1) * top[size]  +
373                          (size - 1 - y) * top[x]  + (y + 1) * left[size] + size) >> (trafo_size + 1);
374 }
375 
376 #define PRED_PLANAR(size)\
377 static void FUNC(pred_planar_ ## size)(uint8_t *src, const uint8_t *top,        \
378                                        const uint8_t *left, ptrdiff_t stride)   \
379 {                                                                               \
380     FUNC(pred_planar)(src, top, left, stride, size + 2);                        \
381 }
382 
383 PRED_PLANAR(0)
384 PRED_PLANAR(1)
385 PRED_PLANAR(2)
386 PRED_PLANAR(3)
387 
388 #undef PRED_PLANAR
389 
FUNC(pred_dc)390 static void FUNC(pred_dc)(uint8_t *_src, const uint8_t *_top,
391                           const uint8_t *_left,
392                           ptrdiff_t stride, int log2_size, int c_idx)
393 {
394     int i, j, x, y;
395     int size          = (1 << log2_size);
396     pixel *src        = (pixel *)_src;
397     const pixel *top  = (const pixel *)_top;
398     const pixel *left = (const pixel *)_left;
399     int dc            = size;
400     pixel4 a;
401     for (i = 0; i < size; i++)
402         dc += left[i] + top[i];
403 
404     dc >>= log2_size + 1;
405 
406     a = PIXEL_SPLAT_X4(dc);
407 
408     for (i = 0; i < size; i++)
409         for (j = 0; j < size; j+=4)
410             AV_WN4P(&POS(j, i), a);
411 
412     if (c_idx == 0 && size < 32) {
413         POS(0, 0) = (left[0] + 2 * dc + top[0] + 2) >> 2;
414         for (x = 1; x < size; x++)
415             POS(x, 0) = (top[x] + 3 * dc + 2) >> 2;
416         for (y = 1; y < size; y++)
417             POS(0, y) = (left[y] + 3 * dc + 2) >> 2;
418     }
419 }
420 
FUNC(pred_angular)421 static av_always_inline void FUNC(pred_angular)(uint8_t *_src,
422                                                 const uint8_t *_top,
423                                                 const uint8_t *_left,
424                                                 ptrdiff_t stride, int c_idx,
425                                                 int mode, int size)
426 {
427     int x, y;
428     pixel *src        = (pixel *)_src;
429     const pixel *top  = (const pixel *)_top;
430     const pixel *left = (const pixel *)_left;
431 
432     static const int intra_pred_angle[] = {
433          32,  26,  21,  17, 13,  9,  5, 2, 0, -2, -5, -9, -13, -17, -21, -26, -32,
434         -26, -21, -17, -13, -9, -5, -2, 0, 2,  5,  9, 13,  17,  21,  26,  32
435     };
436     static const int inv_angle[] = {
437         -4096, -1638, -910, -630, -482, -390, -315, -256, -315, -390, -482,
438         -630, -910, -1638, -4096
439     };
440 
441     int angle = intra_pred_angle[mode - 2];
442     pixel ref_array[3 * MAX_TB_SIZE + 4];
443     pixel *ref_tmp = ref_array + size;
444     const pixel *ref;
445     int last = (size * angle) >> 5;
446 
447     if (mode >= 18) {
448         ref = top - 1;
449         if (angle < 0 && last < -1) {
450             for (x = 0; x <= size; x += 4)
451                 AV_WN4P(&ref_tmp[x], AV_RN4P(&top[x - 1]));
452             for (x = last; x <= -1; x++)
453                 ref_tmp[x] = left[-1 + ((x * inv_angle[mode - 11] + 128) >> 8)];
454             ref = ref_tmp;
455         }
456 
457         for (y = 0; y < size; y++) {
458             int idx  = ((y + 1) * angle) >> 5;
459             int fact = ((y + 1) * angle) & 31;
460             if (fact) {
461                 for (x = 0; x < size; x += 4) {
462                     POS(x    , y) = ((32 - fact) * ref[x + idx + 1] +
463                                            fact  * ref[x + idx + 2] + 16) >> 5;
464                     POS(x + 1, y) = ((32 - fact) * ref[x + 1 + idx + 1] +
465                                            fact  * ref[x + 1 + idx + 2] + 16) >> 5;
466                     POS(x + 2, y) = ((32 - fact) * ref[x + 2 + idx + 1] +
467                                            fact  * ref[x + 2 + idx + 2] + 16) >> 5;
468                     POS(x + 3, y) = ((32 - fact) * ref[x + 3 + idx + 1] +
469                                            fact  * ref[x + 3 + idx + 2] + 16) >> 5;
470                 }
471             } else {
472                 for (x = 0; x < size; x += 4)
473                     AV_WN4P(&POS(x, y), AV_RN4P(&ref[x + idx + 1]));
474             }
475         }
476         if (mode == 26 && c_idx == 0 && size < 32) {
477             for (y = 0; y < size; y++)
478                 POS(0, y) = av_clip_pixel(top[0] + ((left[y] - left[-1]) >> 1));
479         }
480     } else {
481         ref = left - 1;
482         if (angle < 0 && last < -1) {
483             for (x = 0; x <= size; x += 4)
484                 AV_WN4P(&ref_tmp[x], AV_RN4P(&left[x - 1]));
485             for (x = last; x <= -1; x++)
486                 ref_tmp[x] = top[-1 + ((x * inv_angle[mode - 11] + 128) >> 8)];
487             ref = ref_tmp;
488         }
489 
490         for (x = 0; x < size; x++) {
491             int idx  = ((x + 1) * angle) >> 5;
492             int fact = ((x + 1) * angle) & 31;
493             if (fact) {
494                 for (y = 0; y < size; y++) {
495                     POS(x, y) = ((32 - fact) * ref[y + idx + 1] +
496                                        fact  * ref[y + idx + 2] + 16) >> 5;
497                 }
498             } else {
499                 for (y = 0; y < size; y++)
500                     POS(x, y) = ref[y + idx + 1];
501             }
502         }
503         if (mode == 10 && c_idx == 0 && size < 32) {
504             for (x = 0; x < size; x += 4) {
505                 POS(x,     0) = av_clip_pixel(left[0] + ((top[x    ] - top[-1]) >> 1));
506                 POS(x + 1, 0) = av_clip_pixel(left[0] + ((top[x + 1] - top[-1]) >> 1));
507                 POS(x + 2, 0) = av_clip_pixel(left[0] + ((top[x + 2] - top[-1]) >> 1));
508                 POS(x + 3, 0) = av_clip_pixel(left[0] + ((top[x + 3] - top[-1]) >> 1));
509             }
510         }
511     }
512 }
513 
FUNC(pred_angular_0)514 static void FUNC(pred_angular_0)(uint8_t *src, const uint8_t *top,
515                                  const uint8_t *left,
516                                  ptrdiff_t stride, int c_idx, int mode)
517 {
518     FUNC(pred_angular)(src, top, left, stride, c_idx, mode, 1 << 2);
519 }
520 
FUNC(pred_angular_1)521 static void FUNC(pred_angular_1)(uint8_t *src, const uint8_t *top,
522                                  const uint8_t *left,
523                                  ptrdiff_t stride, int c_idx, int mode)
524 {
525     FUNC(pred_angular)(src, top, left, stride, c_idx, mode, 1 << 3);
526 }
527 
FUNC(pred_angular_2)528 static void FUNC(pred_angular_2)(uint8_t *src, const uint8_t *top,
529                                  const uint8_t *left,
530                                  ptrdiff_t stride, int c_idx, int mode)
531 {
532     FUNC(pred_angular)(src, top, left, stride, c_idx, mode, 1 << 4);
533 }
534 
FUNC(pred_angular_3)535 static void FUNC(pred_angular_3)(uint8_t *src, const uint8_t *top,
536                                  const uint8_t *left,
537                                  ptrdiff_t stride, int c_idx, int mode)
538 {
539     FUNC(pred_angular)(src, top, left, stride, c_idx, mode, 1 << 5);
540 }
541 
542 #undef EXTEND_LEFT_CIP
543 #undef EXTEND_RIGHT_CIP
544 #undef EXTEND_UP_CIP
545 #undef EXTEND_DOWN_CIP
546 #undef IS_INTRA
547 #undef MVF_PU
548 #undef MVF
549 #undef PU
550 #undef EXTEND
551 #undef MIN_TB_ADDR_ZS
552 #undef POS
553