FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/cavs.c
Date: 2024-11-20 23:03:26
Exec Total Coverage
Lines: 468 484 96.7%
Functions: 27 27 100.0%
Branches: 210 231 90.9%
Line Branch Exec Source
1 /*
2 * Chinese AVS video (AVS1-P2, JiZhun profile) decoder.
3 * Copyright (c) 2006 Stefan Gehrer <stefan.gehrer@gmx.de>
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * Chinese AVS video (AVS1-P2, JiZhun profile) decoder
25 * @author Stefan Gehrer <stefan.gehrer@gmx.de>
26 */
27
28 #include "libavutil/mem.h"
29 #include "avcodec.h"
30 #include "golomb.h"
31 #include "h264chroma.h"
32 #include "idctdsp.h"
33 #include "mathops.h"
34 #include "qpeldsp.h"
35 #include "cavs.h"
36
37 static const uint8_t alpha_tab[64] = {
38 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 3, 3,
39 4, 4, 5, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 18, 20,
40 22, 24, 26, 28, 30, 33, 33, 35, 35, 36, 37, 37, 39, 39, 42, 44,
41 46, 48, 50, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64
42 };
43
44 static const uint8_t beta_tab[64] = {
45 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2,
46 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6,
47 6, 7, 7, 7, 8, 8, 8, 9, 9, 10, 10, 11, 11, 12, 13, 14,
48 15, 16, 17, 18, 19, 20, 21, 22, 23, 23, 24, 24, 25, 25, 26, 27
49 };
50
51 static const uint8_t tc_tab[64] = {
52 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
53 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
54 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4,
55 5, 5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9
56 };
57
58 /** mark block as unavailable, i.e. out of picture
59 * or not yet decoded */
60 static const cavs_vector un_mv = { 0, 0, 1, NOT_AVAIL };
61
62 static const int8_t left_modifier_l[8] = { 0, -1, 6, -1, -1, 7, 6, 7 };
63 static const int8_t top_modifier_l[8] = { -1, 1, 5, -1, -1, 5, 7, 7 };
64 static const int8_t left_modifier_c[7] = { 5, -1, 2, -1, 6, 5, 6 };
65 static const int8_t top_modifier_c[7] = { 4, 1, -1, -1, 4, 6, 6 };
66
67 /*****************************************************************************
68 *
69 * in-loop deblocking filter
70 *
71 ****************************************************************************/
72
73 1804284 static inline int get_bs(cavs_vector *mvP, cavs_vector *mvQ, int b)
74 {
75
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 1804284 if ((mvP->ref == REF_INTRA) || (mvQ->ref == REF_INTRA))
76 15966 return 2;
77
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 1788318 if((abs(mvP->x - mvQ->x) >= 4) ||
78
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 1681784 (abs(mvP->y - mvQ->y) >= 4) ||
79
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 1619934 (mvP->ref != mvQ->ref))
80 305768 return 1;
81
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 1482550 if (b) {
82 1225791 mvP += MV_BWD_OFFS;
83 1225791 mvQ += MV_BWD_OFFS;
84
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 1225791 if((abs(mvP->x - mvQ->x) >= 4) ||
85
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 1211344 (abs(mvP->y - mvQ->y) >= 4) ||
86
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 1202820 (mvP->ref != mvQ->ref))
87 67911 return 1;
88 }
89 1414639 return 0;
90 }
91
92 #define SET_PARAMS \
93 alpha = alpha_tab[av_clip_uintp2(qp_avg + h->alpha_offset, 6)]; \
94 beta = beta_tab[av_clip_uintp2(qp_avg + h->beta_offset, 6)]; \
95 tc = tc_tab[av_clip_uintp2(qp_avg + h->alpha_offset, 6)];
96
97 /**
98 * in-loop deblocking filter for a single macroblock
99 *
100 * boundary strength (bs) mapping:
101 *
102 * --4---5--
103 * 0 2 |
104 * | 6 | 7 |
105 * 1 3 |
106 * ---------
107 */
108 302965 void ff_cavs_filter(AVSContext *h, enum cavs_mb mb_type)
109 {
110 uint8_t bs[8];
111 int qp_avg, alpha, beta, tc;
112 int i;
113
114 /* save un-deblocked lines */
115 302965 h->topleft_border_y = h->top_border_y[h->mbx * 16 + 15];
116 302965 h->topleft_border_u = h->top_border_u[h->mbx * 10 + 8];
117 302965 h->topleft_border_v = h->top_border_v[h->mbx * 10 + 8];
118 302965 memcpy(&h->top_border_y[h->mbx * 16], h->cy + 15 * h->l_stride, 16);
119 302965 memcpy(&h->top_border_u[h->mbx * 10 + 1], h->cu + 7 * h->c_stride, 8);
120 302965 memcpy(&h->top_border_v[h->mbx * 10 + 1], h->cv + 7 * h->c_stride, 8);
121
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 2726685 for (i = 0; i < 8; i++) {
122 2423720 h->left_border_y[i * 2 + 1] = *(h->cy + 15 + (i * 2 + 0) * h->l_stride);
123 2423720 h->left_border_y[i * 2 + 2] = *(h->cy + 15 + (i * 2 + 1) * h->l_stride);
124 2423720 h->left_border_u[i + 1] = *(h->cu + 7 + i * h->c_stride);
125 2423720 h->left_border_v[i + 1] = *(h->cv + 7 + i * h->c_stride);
126 }
127
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 302965 if (!h->loop_filter_disable) {
128 /* determine bs */
129
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 302965 if (mb_type == I_8X8)
130 29134 memset(bs, 2, 8);
131 else {
132 273831 memset(bs, 0, 8);
133
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 273831 if (ff_cavs_partition_flags[mb_type] & SPLITV) {
134 176596 bs[2] = get_bs(&h->mv[MV_FWD_X0], &h->mv[MV_FWD_X1], mb_type > P_8X8);
135 176596 bs[3] = get_bs(&h->mv[MV_FWD_X2], &h->mv[MV_FWD_X3], mb_type > P_8X8);
136 }
137
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 273831 if (ff_cavs_partition_flags[mb_type] & SPLITH) {
138 177884 bs[6] = get_bs(&h->mv[MV_FWD_X0], &h->mv[MV_FWD_X2], mb_type > P_8X8);
139 177884 bs[7] = get_bs(&h->mv[MV_FWD_X1], &h->mv[MV_FWD_X3], mb_type > P_8X8);
140 }
141 273831 bs[0] = get_bs(&h->mv[MV_FWD_A1], &h->mv[MV_FWD_X0], mb_type > P_8X8);
142 273831 bs[1] = get_bs(&h->mv[MV_FWD_A3], &h->mv[MV_FWD_X2], mb_type > P_8X8);
143 273831 bs[4] = get_bs(&h->mv[MV_FWD_B2], &h->mv[MV_FWD_X0], mb_type > P_8X8);
144 273831 bs[5] = get_bs(&h->mv[MV_FWD_B3], &h->mv[MV_FWD_X1], mb_type > P_8X8);
145 }
146
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 302965 if (AV_RN64(bs)) {
147
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 138808 if (h->flags & A_AVAIL) {
148 132110 qp_avg = (h->qp + h->left_qp + 1) >> 1;
149 132110 SET_PARAMS;
150 132110 h->cdsp.cavs_filter_lv(h->cy, h->l_stride, alpha, beta, tc, bs[0], bs[1]);
151 132110 qp_avg = (ff_cavs_chroma_qp[h->qp] + ff_cavs_chroma_qp[h->left_qp] + 1) >> 1;
152 132110 SET_PARAMS;
153 132110 h->cdsp.cavs_filter_cv(h->cu, h->c_stride, alpha, beta, tc, bs[0], bs[1]);
154 132110 h->cdsp.cavs_filter_cv(h->cv, h->c_stride, alpha, beta, tc, bs[0], bs[1]);
155 }
156 138808 qp_avg = h->qp;
157 138808 SET_PARAMS;
158 138808 h->cdsp.cavs_filter_lv(h->cy + 8, h->l_stride, alpha, beta, tc, bs[2], bs[3]);
159 138808 h->cdsp.cavs_filter_lh(h->cy + 8 * h->l_stride, h->l_stride, alpha, beta, tc, bs[6], bs[7]);
160
161
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 138808 if (h->flags & B_AVAIL) {
162 130403 qp_avg = (h->qp + h->top_qp[h->mbx] + 1) >> 1;
163 130403 SET_PARAMS;
164 130403 h->cdsp.cavs_filter_lh(h->cy, h->l_stride, alpha, beta, tc, bs[4], bs[5]);
165 130403 qp_avg = (ff_cavs_chroma_qp[h->qp] + ff_cavs_chroma_qp[h->top_qp[h->mbx]] + 1) >> 1;
166 130403 SET_PARAMS;
167 130403 h->cdsp.cavs_filter_ch(h->cu, h->c_stride, alpha, beta, tc, bs[4], bs[5]);
168 130403 h->cdsp.cavs_filter_ch(h->cv, h->c_stride, alpha, beta, tc, bs[4], bs[5]);
169 }
170 }
171 }
172 302965 h->left_qp = h->qp;
173 302965 h->top_qp[h->mbx] = h->qp;
174 302965 }
175
176 #undef SET_PARAMS
177
178 /*****************************************************************************
179 *
180 * spatial intra prediction
181 *
182 ****************************************************************************/
183
184 116536 void ff_cavs_load_intra_pred_luma(AVSContext *h, uint8_t *top,
185 uint8_t **left, int block)
186 {
187 int i;
188
189
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 116536 switch (block) {
190 29134 case 0:
191 29134 *left = h->left_border_y;
192 29134 h->left_border_y[0] = h->left_border_y[1];
193 29134 memset(&h->left_border_y[17], h->left_border_y[16], 9);
194 29134 memcpy(&top[1], &h->top_border_y[h->mbx * 16], 16);
195 29134 top[17] = top[16];
196 29134 top[0] = top[1];
197
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 29134 if ((h->flags & A_AVAIL) && (h->flags & B_AVAIL))
198 28076 h->left_border_y[0] = top[0] = h->topleft_border_y;
199 29134 break;
200 29134 case 1:
201 29134 *left = h->intern_border_y;
202
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 262206 for (i = 0; i < 8; i++)
203 233072 h->intern_border_y[i + 1] = *(h->cy + 7 + i * h->l_stride);
204 29134 memset(&h->intern_border_y[9], h->intern_border_y[8], 9);
205 29134 h->intern_border_y[0] = h->intern_border_y[1];
206 29134 memcpy(&top[1], &h->top_border_y[h->mbx * 16 + 8], 8);
207
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 29134 if (h->flags & C_AVAIL)
208 27829 memcpy(&top[9], &h->top_border_y[(h->mbx + 1) * 16], 8);
209 else
210 1305 memset(&top[9], top[8], 9);
211 29134 top[17] = top[16];
212 29134 top[0] = top[1];
213
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 29134 if (h->flags & B_AVAIL)
214 28518 h->intern_border_y[0] = top[0] = h->top_border_y[h->mbx * 16 + 7];
215 29134 break;
216 29134 case 2:
217 29134 *left = &h->left_border_y[8];
218 29134 memcpy(&top[1], h->cy + 7 * h->l_stride, 16);
219 29134 top[17] = top[16];
220 29134 top[0] = top[1];
221
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 29134 if (h->flags & A_AVAIL)
222 28682 top[0] = h->left_border_y[8];
223 29134 break;
224 29134 case 3:
225 29134 *left = &h->intern_border_y[8];
226
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 262206 for (i = 0; i < 8; i++)
227 233072 h->intern_border_y[i + 9] = *(h->cy + 7 + (i + 8) * h->l_stride);
228 29134 memset(&h->intern_border_y[17], h->intern_border_y[16], 9);
229 29134 memcpy(&top[0], h->cy + 7 + 7 * h->l_stride, 9);
230 29134 memset(&top[9], top[8], 9);
231 29134 break;
232 }
233 116536 }
234
235 29134 void ff_cavs_load_intra_pred_chroma(AVSContext *h)
236 {
237 /* extend borders by one pixel */
238 29134 h->left_border_u[9] = h->left_border_u[8];
239 29134 h->left_border_v[9] = h->left_border_v[8];
240
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 29134 if(h->flags & C_AVAIL) {
241 27829 h->top_border_u[h->mbx*10 + 9] = h->top_border_u[h->mbx*10 + 11];
242 27829 h->top_border_v[h->mbx*10 + 9] = h->top_border_v[h->mbx*10 + 11];
243 } else {
244 1305 h->top_border_u[h->mbx * 10 + 9] = h->top_border_u[h->mbx * 10 + 8];
245 1305 h->top_border_v[h->mbx * 10 + 9] = h->top_border_v[h->mbx * 10 + 8];
246 }
247
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 29134 if((h->flags & A_AVAIL) && (h->flags & B_AVAIL)) {
248 28076 h->top_border_u[h->mbx * 10] = h->left_border_u[0] = h->topleft_border_u;
249 28076 h->top_border_v[h->mbx * 10] = h->left_border_v[0] = h->topleft_border_v;
250 } else {
251 1058 h->left_border_u[0] = h->left_border_u[1];
252 1058 h->left_border_v[0] = h->left_border_v[1];
253 1058 h->top_border_u[h->mbx * 10] = h->top_border_u[h->mbx * 10 + 1];
254 1058 h->top_border_v[h->mbx * 10] = h->top_border_v[h->mbx * 10 + 1];
255 }
256 29134 }
257
258 51848 static void intra_pred_vert(uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
259 {
260 int y;
261 51848 uint64_t a = AV_RN64(&top[1]);
262
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263 414784 *((uint64_t *)(d + y * stride)) = a;
264 51848 }
265
266 39014 static void intra_pred_horiz(uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
267 {
268 int y;
269 uint64_t a;
270
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 351126 for (y = 0; y < 8; y++) {
271 312112 a = left[y + 1] * 0x0101010101010101ULL;
272 312112 *((uint64_t *)(d + y * stride)) = a;
273 }
274 39014 }
275
276 30 static void intra_pred_dc_128(uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
277 {
278 int y;
279 30 uint64_t a = 0x8080808080808080ULL;
280
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 270 for (y = 0; y < 8; y++)
281 240 *((uint64_t *)(d + y * stride)) = a;
282 30 }
283
284 3000 static void intra_pred_plane(uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
285 {
286 int x, y, ia;
287 3000 int ih = 0;
288 3000 int iv = 0;
289 3000 const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
290
291
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 15000 for (x = 0; x < 4; x++) {
292 12000 ih += (x + 1) * (top[5 + x] - top[3 - x]);
293 12000 iv += (x + 1) * (left[5 + x] - left[3 - x]);
294 }
295 3000 ia = (top[8] + left[8]) << 4;
296 3000 ih = (17 * ih + 16) >> 5;
297 3000 iv = (17 * iv + 16) >> 5;
298
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299
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300 192000 d[y * stride + x] = cm[(ia + (x - 3) * ih + (y - 3) * iv + 16) >> 5];
301 3000 }
302
303 #define LOWPASS(ARRAY, INDEX) \
304 ((ARRAY[(INDEX) - 1] + 2 * ARRAY[(INDEX)] + ARRAY[(INDEX) + 1] + 2) >> 2)
305
306 68506 static void intra_pred_lp(uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
307 {
308 int x, y;
309
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310
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311 4384384 d[y * stride + x] = (LOWPASS(top, x + 1) + LOWPASS(left, y + 1)) >> 1;
312 68506 }
313
314 5041 static void intra_pred_down_left(uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
315 {
316 int x, y;
317
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318
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319 322624 d[y * stride + x] = (LOWPASS(top, x + y + 2) + LOWPASS(left, x + y + 2)) >> 1;
320 5041 }
321
322 3154 static void intra_pred_down_right(uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
323 {
324 int x, y;
325
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326
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327
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 201856 if (x == y)
328 25232 d[y * stride + x] = (left[1] + 2 * top[0] + top[1] + 2) >> 2;
329
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 176624 else if (x > y)
330 88312 d[y * stride + x] = LOWPASS(top, x - y);
331 else
332 88312 d[y * stride + x] = LOWPASS(left, y - x);
333 3154 }
334
335 2433 static void intra_pred_lp_left(uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
336 {
337 int x, y;
338
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339
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340 155712 d[y * stride + x] = LOWPASS(left, y + 1);
341 2433 }
342
343 1778 static void intra_pred_lp_top(uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
344 {
345 int x, y;
346
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347
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348 113792 d[y * stride + x] = LOWPASS(top, x + 1);
349 1778 }
350
351 #undef LOWPASS
352
353 3204 static inline void modify_pred(const int8_t *mod_table, int *mode)
354 {
355 3204 *mode = mod_table[*mode];
356
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 3204 if (*mode < 0) {
357 ✗ av_log(NULL, AV_LOG_ERROR, "Illegal intra prediction mode\n");
358 ✗ *mode = 0;
359 }
360 3204 }
361
362 29134 void ff_cavs_modify_mb_i(AVSContext *h, int *pred_mode_uv)
363 {
364 /* save pred modes before they get modified */
365 29134 h->pred_mode_Y[3] = h->pred_mode_Y[5];
366 29134 h->pred_mode_Y[6] = h->pred_mode_Y[8];
367 29134 h->top_pred_Y[h->mbx * 2 + 0] = h->pred_mode_Y[7];
368 29134 h->top_pred_Y[h->mbx * 2 + 1] = h->pred_mode_Y[8];
369
370 /* modify pred modes according to availability of neighbour samples */
371
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 29134 if (!(h->flags & A_AVAIL)) {
372 452 modify_pred(left_modifier_l, &h->pred_mode_Y[4]);
373 452 modify_pred(left_modifier_l, &h->pred_mode_Y[7]);
374 452 modify_pred(left_modifier_c, pred_mode_uv);
375 }
376
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 29134 if (!(h->flags & B_AVAIL)) {
377 616 modify_pred(top_modifier_l, &h->pred_mode_Y[4]);
378 616 modify_pred(top_modifier_l, &h->pred_mode_Y[5]);
379 616 modify_pred(top_modifier_c, pred_mode_uv);
380 }
381 29134 }
382
383 /*****************************************************************************
384 *
385 * motion compensation
386 *
387 ****************************************************************************/
388
389 1458301 static inline void mc_dir_part(AVSContext *h, AVFrame *pic, int chroma_height,
390 int delta, int list, uint8_t *dest_y,
391 uint8_t *dest_cb, uint8_t *dest_cr,
392 int src_x_offset, int src_y_offset,
393 qpel_mc_func *qpix_op,
394 h264_chroma_mc_func chroma_op, cavs_vector *mv)
395 {
396 1458301 const int mx = mv->x + src_x_offset * 8;
397 1458301 const int my = mv->y + src_y_offset * 8;
398 1458301 const int luma_xy = (mx & 3) + ((my & 3) << 2);
399 1458301 uint8_t *src_y = pic->data[0] + (mx >> 2) + (my >> 2) * h->l_stride;
400 1458301 uint8_t *src_cb = pic->data[1] + (mx >> 3) + (my >> 3) * h->c_stride;
401 1458301 uint8_t *src_cr = pic->data[2] + (mx >> 3) + (my >> 3) * h->c_stride;
402 1458301 int extra_width = 0;
403 1458301 int extra_height = extra_width;
404 1458301 const int full_mx = mx >> 2;
405 1458301 const int full_my = my >> 2;
406 1458301 const int pic_width = 16 * h->mb_width;
407 1458301 const int pic_height = 16 * h->mb_height;
408 1458301 int emu = 0;
409
410
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 1458301 if (!pic->data[0])
411 ✗ return;
412
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 1458301 if (mx & 7)
413 122217 extra_width -= 3;
414
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 1458301 if (my & 7)
415 127352 extra_height -= 3;
416
417
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 1458301 if (full_mx < 0 - extra_width ||
418
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 1457345 full_my < 0 - extra_height ||
419
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 1455865 full_mx + 16 /* FIXME */ > pic_width + extra_width ||
420
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 1440600 full_my + 16 /* FIXME */ > pic_height + extra_height) {
421 37597 h->vdsp.emulated_edge_mc(h->edge_emu_buffer,
422 37597 src_y - 2 - 2 * h->l_stride,
423 h->l_stride, h->l_stride,
424 16 + 5, 16 + 5 /* FIXME */,
425 full_mx - 2, full_my - 2,
426 pic_width, pic_height);
427 37597 src_y = h->edge_emu_buffer + 2 + 2 * h->l_stride;
428 37597 emu = 1;
429 }
430
431 // FIXME try variable height perhaps?
432 1458301 qpix_op[luma_xy](dest_y, src_y, h->l_stride);
433
434
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 1458301 if (emu) {
435 37597 h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src_cb,
436 h->c_stride, h->c_stride,
437 9, 9 /* FIXME */,
438 mx >> 3, my >> 3,
439 pic_width >> 1, pic_height >> 1);
440 37597 src_cb = h->edge_emu_buffer;
441 }
442 1458301 chroma_op(dest_cb, src_cb, h->c_stride, chroma_height, mx & 7, my & 7);
443
444
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 1458301 if (emu) {
445 37597 h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src_cr,
446 h->c_stride, h->c_stride,
447 9, 9 /* FIXME */,
448 mx >> 3, my >> 3,
449 pic_width >> 1, pic_height >> 1);
450 37597 src_cr = h->edge_emu_buffer;
451 }
452 1458301 chroma_op(dest_cr, src_cr, h->c_stride, chroma_height, mx & 7, my & 7);
453 }
454
455 837510 static inline void mc_part_std(AVSContext *h, int chroma_height, int delta,
456 uint8_t *dest_y,
457 uint8_t *dest_cb,
458 uint8_t *dest_cr,
459 int x_offset, int y_offset,
460 qpel_mc_func *qpix_put,
461 h264_chroma_mc_func chroma_put,
462 qpel_mc_func *qpix_avg,
463 h264_chroma_mc_func chroma_avg,
464 cavs_vector *mv)
465 {
466 837510 qpel_mc_func *qpix_op = qpix_put;
467 837510 h264_chroma_mc_func chroma_op = chroma_put;
468
469 837510 dest_y += x_offset * 2 + y_offset * h->l_stride * 2;
470 837510 dest_cb += x_offset + y_offset * h->c_stride;
471 837510 dest_cr += x_offset + y_offset * h->c_stride;
472 837510 x_offset += 8 * h->mbx;
473 837510 y_offset += 8 * h->mby;
474
475
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 837510 if (mv->ref >= 0) {
476 794000 AVFrame *ref = h->DPB[mv->ref].f;
477 794000 mc_dir_part(h, ref, chroma_height, delta, 0,
478 dest_y, dest_cb, dest_cr, x_offset, y_offset,
479 qpix_op, chroma_op, mv);
480
481 794000 qpix_op = qpix_avg;
482 794000 chroma_op = chroma_avg;
483 }
484
485
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 837510 if ((mv + MV_BWD_OFFS)->ref >= 0) {
486 664301 AVFrame *ref = h->DPB[0].f;
487 664301 mc_dir_part(h, ref, chroma_height, delta, 1,
488 dest_y, dest_cb, dest_cr, x_offset, y_offset,
489 qpix_op, chroma_op, mv + MV_BWD_OFFS);
490 }
491 837510 }
492
493 273831 void ff_cavs_inter(AVSContext *h, enum cavs_mb mb_type)
494 {
495
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 273831 if (ff_cavs_partition_flags[mb_type] == 0) { // 16x16
496 85938 mc_part_std(h, 8, 0, h->cy, h->cu, h->cv, 0, 0,
497 85938 h->cdsp.put_cavs_qpel_pixels_tab[0],
498 h->h264chroma.put_h264_chroma_pixels_tab[0],
499 85938 h->cdsp.avg_cavs_qpel_pixels_tab[0],
500 h->h264chroma.avg_h264_chroma_pixels_tab[0],
501 &h->mv[MV_FWD_X0]);
502 } else {
503 187893 mc_part_std(h, 4, 0, h->cy, h->cu, h->cv, 0, 0,
504 187893 h->cdsp.put_cavs_qpel_pixels_tab[1],
505 h->h264chroma.put_h264_chroma_pixels_tab[1],
506 187893 h->cdsp.avg_cavs_qpel_pixels_tab[1],
507 h->h264chroma.avg_h264_chroma_pixels_tab[1],
508 &h->mv[MV_FWD_X0]);
509 187893 mc_part_std(h, 4, 0, h->cy, h->cu, h->cv, 4, 0,
510 187893 h->cdsp.put_cavs_qpel_pixels_tab[1],
511 h->h264chroma.put_h264_chroma_pixels_tab[1],
512 187893 h->cdsp.avg_cavs_qpel_pixels_tab[1],
513 h->h264chroma.avg_h264_chroma_pixels_tab[1],
514 &h->mv[MV_FWD_X1]);
515 187893 mc_part_std(h, 4, 0, h->cy, h->cu, h->cv, 0, 4,
516 187893 h->cdsp.put_cavs_qpel_pixels_tab[1],
517 h->h264chroma.put_h264_chroma_pixels_tab[1],
518 187893 h->cdsp.avg_cavs_qpel_pixels_tab[1],
519 h->h264chroma.avg_h264_chroma_pixels_tab[1],
520 &h->mv[MV_FWD_X2]);
521 187893 mc_part_std(h, 4, 0, h->cy, h->cu, h->cv, 4, 4,
522 187893 h->cdsp.put_cavs_qpel_pixels_tab[1],
523 h->h264chroma.put_h264_chroma_pixels_tab[1],
524 187893 h->cdsp.avg_cavs_qpel_pixels_tab[1],
525 h->h264chroma.avg_h264_chroma_pixels_tab[1],
526 &h->mv[MV_FWD_X3]);
527 }
528 273831 }
529
530 /*****************************************************************************
531 *
532 * motion vector prediction
533 *
534 ****************************************************************************/
535
536 512802 static inline void scale_mv(AVSContext *h, int *d_x, int *d_y,
537 cavs_vector *src, int distp)
538 {
539 512802 int64_t den = h->scale_den[FFMAX(src->ref, 0)];
540 512802 *d_x = (src->x * distp * den + 256 + FF_SIGNBIT(src->x)) >> 9;
541 512802 *d_y = (src->y * distp * den + 256 + FF_SIGNBIT(src->y)) >> 9;
542 512802 }
543
544 170934 static inline void mv_pred_median(AVSContext *h,
545 cavs_vector *mvP,
546 cavs_vector *mvA,
547 cavs_vector *mvB,
548 cavs_vector *mvC)
549 {
550 int ax, ay, bx, by, cx, cy;
551 int len_ab, len_bc, len_ca, len_mid;
552
553 /* scale candidates according to their temporal span */
554 170934 scale_mv(h, &ax, &ay, mvA, mvP->dist);
555 170934 scale_mv(h, &bx, &by, mvB, mvP->dist);
556 170934 scale_mv(h, &cx, &cy, mvC, mvP->dist);
557 /* find the geometrical median of the three candidates */
558 170934 len_ab = abs(ax - bx) + abs(ay - by);
559 170934 len_bc = abs(bx - cx) + abs(by - cy);
560 170934 len_ca = abs(cx - ax) + abs(cy - ay);
561 170934 len_mid = mid_pred(len_ab, len_bc, len_ca);
562
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 170934 if (len_mid == len_ab) {
563 138251 mvP->x = cx;
564 138251 mvP->y = cy;
565
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 32683 } else if (len_mid == len_bc) {
566 24798 mvP->x = ax;
567 24798 mvP->y = ay;
568 } else {
569 7885 mvP->x = bx;
570 7885 mvP->y = by;
571 }
572 170934 }
573
574 239980 void ff_cavs_mv(AVSContext *h, enum cavs_mv_loc nP, enum cavs_mv_loc nC,
575 enum cavs_mv_pred mode, enum cavs_block size, int ref)
576 {
577 239980 cavs_vector *mvP = &h->mv[nP];
578 239980 cavs_vector *mvA = &h->mv[nP-1];
579 239980 cavs_vector *mvB = &h->mv[nP-4];
580 239980 cavs_vector *mvC = &h->mv[nC];
581 239980 const cavs_vector *mvP2 = NULL;
582
583 239980 mvP->ref = ref;
584 239980 mvP->dist = h->dist[mvP->ref];
585
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 239980 if (mvC->ref == NOT_AVAIL || (nP == MV_FWD_X3) || (nP == MV_BWD_X3 ))
586 28378 mvC = &h->mv[nP - 5]; // set to top-left (mvD)
587
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 239980 if (mode == MV_PRED_PSKIP &&
588
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 20801 (mvA->ref == NOT_AVAIL ||
589
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 20081 mvB->ref == NOT_AVAIL ||
590
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 19308 (mvA->x | mvA->y | mvA->ref) == 0 ||
591
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 850 (mvB->x | mvB->y | mvB->ref) == 0)) {
592 20434 mvP2 = &un_mv;
593 /* if there is only one suitable candidate, take it */
594
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 219546 } else if (mvA->ref >= 0 && mvB->ref < 0 && mvC->ref < 0) {
595 11340 mvP2 = mvA;
596
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 208206 } else if (mvA->ref < 0 && mvB->ref >= 0 && mvC->ref < 0) {
597 4619 mvP2 = mvB;
598
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 203587 } else if (mvA->ref < 0 && mvB->ref < 0 && mvC->ref >= 0) {
599 3547 mvP2 = mvC;
600
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 200040 } else if (mode == MV_PRED_LEFT && mvA->ref == ref) {
601 14390 mvP2 = mvA;
602
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 185650 } else if (mode == MV_PRED_TOP && mvB->ref == ref) {
603 7957 mvP2 = mvB;
604
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 177693 } else if (mode == MV_PRED_TOPRIGHT && mvC->ref == ref) {
605 6759 mvP2 = mvC;
606 }
607
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 239980 if (mvP2) {
608 69046 mvP->x = mvP2->x;
609 69046 mvP->y = mvP2->y;
610 } else
611 170934 mv_pred_median(h, mvP, mvA, mvB, mvC);
612
613
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 239980 if (mode < MV_PRED_PSKIP) {
614 190261 int mx = get_se_golomb(&h->gb) + (unsigned)mvP->x;
615 190261 int my = get_se_golomb(&h->gb) + (unsigned)mvP->y;
616
617
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 190261 if (mx != (int16_t)mx || my != (int16_t)my) {
618 ✗ av_log(h->avctx, AV_LOG_ERROR, "MV %d %d out of supported range\n", mx, my);
619 } else {
620 190261 mvP->x = mx;
621 190261 mvP->y = my;
622 }
623 }
624 239980 set_mvs(mvP, size);
625 239980 }
626
627 /*****************************************************************************
628 *
629 * macroblock level
630 *
631 ****************************************************************************/
632
633 /**
634 * initialise predictors for motion vectors and intra prediction
635 */
636 302965 void ff_cavs_init_mb(AVSContext *h)
637 {
638 int i;
639
640 /* copy predictors from top line (MB B and C) into cache */
641
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 1211860 for (i = 0; i < 3; i++) {
642 908895 h->mv[MV_FWD_B2 + i] = h->top_mv[0][h->mbx * 2 + i];
643 908895 h->mv[MV_BWD_B2 + i] = h->top_mv[1][h->mbx * 2 + i];
644 }
645 302965 h->pred_mode_Y[1] = h->top_pred_Y[h->mbx * 2 + 0];
646 302965 h->pred_mode_Y[2] = h->top_pred_Y[h->mbx * 2 + 1];
647 /* clear top predictors if MB B is not available */
648
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 302965 if (!(h->flags & B_AVAIL)) {
649 8405 h->mv[MV_FWD_B2] = un_mv;
650 8405 h->mv[MV_FWD_B3] = un_mv;
651 8405 h->mv[MV_BWD_B2] = un_mv;
652 8405 h->mv[MV_BWD_B3] = un_mv;
653 8405 h->pred_mode_Y[1] = h->pred_mode_Y[2] = NOT_AVAIL;
654 8405 h->flags &= ~(C_AVAIL | D_AVAIL);
655
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 294560 } else if (h->mbx) {
656 288048 h->flags |= D_AVAIL;
657 }
658
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 302965 if (h->mbx == h->mb_width - 1) // MB C not available
659 6697 h->flags &= ~C_AVAIL;
660 /* clear top-right predictors if MB C is not available */
661
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 302965 if (!(h->flags & C_AVAIL)) {
662 14916 h->mv[MV_FWD_C2] = un_mv;
663 14916 h->mv[MV_BWD_C2] = un_mv;
664 }
665 /* clear top-left predictors if MB D is not available */
666
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 302965 if (!(h->flags & D_AVAIL)) {
667 14917 h->mv[MV_FWD_D3] = un_mv;
668 14917 h->mv[MV_BWD_D3] = un_mv;
669 }
670 302965 }
671
672 /**
673 * save predictors for later macroblocks and increase
674 * macroblock address
675 * @return 0 if end of frame is reached, 1 otherwise
676 */
677 302965 int ff_cavs_next_mb(AVSContext *h)
678 {
679 int i;
680
681 302965 h->flags |= A_AVAIL;
682 302965 h->cy += 16;
683 302965 h->cu += 8;
684 302965 h->cv += 8;
685 /* copy mvs as predictors to the left */
686
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 2120755 for (i = 0; i <= 20; i += 4)
687 1817790 h->mv[i] = h->mv[i + 2];
688 /* copy bottom mvs from cache to top line */
689 302965 h->top_mv[0][h->mbx * 2 + 0] = h->mv[MV_FWD_X2];
690 302965 h->top_mv[0][h->mbx * 2 + 1] = h->mv[MV_FWD_X3];
691 302965 h->top_mv[1][h->mbx * 2 + 0] = h->mv[MV_BWD_X2];
692 302965 h->top_mv[1][h->mbx * 2 + 1] = h->mv[MV_BWD_X3];
693 /* next MB address */
694 302965 h->mbidx++;
695 302965 h->mbx++;
696
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 302965 if (h->mbx == h->mb_width) { // New mb line
697 6697 h->flags = B_AVAIL | C_AVAIL;
698 /* clear left pred_modes */
699 6697 h->pred_mode_Y[3] = h->pred_mode_Y[6] = NOT_AVAIL;
700 /* clear left mv predictors */
701
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 46879 for (i = 0; i <= 20; i += 4)
702 40182 h->mv[i] = un_mv;
703 6697 h->mbx = 0;
704 6697 h->mby++;
705 /* re-calculate sample pointers */
706 6697 h->cy = h->cur.f->data[0] + h->mby * 16 * h->l_stride;
707 6697 h->cu = h->cur.f->data[1] + h->mby * 8 * h->c_stride;
708 6697 h->cv = h->cur.f->data[2] + h->mby * 8 * h->c_stride;
709
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 6697 if (h->mby == h->mb_height) { // Frame end
710 185 return 0;
711 }
712 }
713 302780 return 1;
714 }
715
716 /*****************************************************************************
717 *
718 * frame level
719 *
720 ****************************************************************************/
721
722 186 int ff_cavs_init_pic(AVSContext *h)
723 {
724 int i;
725
726 /* clear some predictors */
727
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 1302 for (i = 0; i <= 20; i += 4)
728 1116 h->mv[i] = un_mv;
729 186 h->mv[MV_BWD_X0] = ff_cavs_dir_mv;
730 186 set_mvs(&h->mv[MV_BWD_X0], BLK_16X16);
731 186 h->mv[MV_FWD_X0] = ff_cavs_dir_mv;
732 186 set_mvs(&h->mv[MV_FWD_X0], BLK_16X16);
733 186 h->pred_mode_Y[3] = h->pred_mode_Y[6] = NOT_AVAIL;
734 186 h->cy = h->cur.f->data[0];
735 186 h->cu = h->cur.f->data[1];
736 186 h->cv = h->cur.f->data[2];
737 186 h->l_stride = h->cur.f->linesize[0];
738 186 h->c_stride = h->cur.f->linesize[1];
739 186 h->luma_scan[2] = 8 * h->l_stride;
740 186 h->luma_scan[3] = 8 * h->l_stride + 8;
741 186 h->mbx = h->mby = h->mbidx = 0;
742 186 h->flags = 0;
743
744 186 return 0;
745 }
746
747 /*****************************************************************************
748 *
749 * headers and interface
750 *
751 ****************************************************************************/
752
753 /**
754 * some predictions require data from the top-neighbouring macroblock.
755 * this data has to be stored for one complete row of macroblocks
756 * and this storage space is allocated here
757 */
758 5 int ff_cavs_init_top_lines(AVSContext *h)
759 {
760 /* alloc top line of predictors */
761 5 h->top_qp = av_mallocz(h->mb_width);
762 5 h->top_mv[0] = av_calloc(h->mb_width * 2 + 1, sizeof(cavs_vector));
763 5 h->top_mv[1] = av_calloc(h->mb_width * 2 + 1, sizeof(cavs_vector));
764 5 h->top_pred_Y = av_calloc(h->mb_width * 2, sizeof(*h->top_pred_Y));
765 5 h->top_border_y = av_calloc(h->mb_width + 1, 16);
766 5 h->top_border_u = av_calloc(h->mb_width, 10);
767 5 h->top_border_v = av_calloc(h->mb_width, 10);
768
769 /* alloc space for co-located MVs and types */
770 5 h->col_mv = av_calloc(h->mb_width * h->mb_height,
771 4 * sizeof(*h->col_mv));
772 5 h->col_type_base = av_mallocz(h->mb_width * h->mb_height);
773 5 h->block = av_mallocz(64 * sizeof(int16_t));
774
775
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 5 if (!h->top_qp || !h->top_mv[0] || !h->top_mv[1] || !h->top_pred_Y ||
776
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 5 !h->top_border_y || !h->top_border_u || !h->top_border_v ||
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 5 !h->col_mv || !h->col_type_base || !h->block) {
778 ✗ av_freep(&h->top_qp);
779 ✗ av_freep(&h->top_mv[0]);
780 ✗ av_freep(&h->top_mv[1]);
781 ✗ av_freep(&h->top_pred_Y);
782 ✗ av_freep(&h->top_border_y);
783 ✗ av_freep(&h->top_border_u);
784 ✗ av_freep(&h->top_border_v);
785 ✗ av_freep(&h->col_mv);
786 ✗ av_freep(&h->col_type_base);
787 ✗ av_freep(&h->block);
788 ✗ return AVERROR(ENOMEM);
789 }
790 5 return 0;
791 }
792
793 6 av_cold int ff_cavs_init(AVCodecContext *avctx)
794 {
795 6 AVSContext *h = avctx->priv_data;
796 uint8_t permutation[64];
797
798 6 ff_blockdsp_init(&h->bdsp);
799 6 ff_h264chroma_init(&h->h264chroma, 8);
800 6 ff_videodsp_init(&h->vdsp, 8);
801 6 ff_cavsdsp_init(&h->cdsp);
802 6 ff_init_scantable_permutation(permutation, h->cdsp.idct_perm);
803 6 ff_permute_scantable(h->permutated_scantable, ff_zigzag_direct, permutation);
804
805 6 h->avctx = avctx;
806 6 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
807
808 6 h->cur.f = av_frame_alloc();
809 6 h->DPB[0].f = av_frame_alloc();
810 6 h->DPB[1].f = av_frame_alloc();
811
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 6 if (!h->cur.f || !h->DPB[0].f || !h->DPB[1].f)
812 ✗ return AVERROR(ENOMEM);
813
814 6 h->luma_scan[0] = 0;
815 6 h->luma_scan[1] = 8;
816 6 h->intra_pred_l[INTRA_L_VERT] = intra_pred_vert;
817 6 h->intra_pred_l[INTRA_L_HORIZ] = intra_pred_horiz;
818 6 h->intra_pred_l[INTRA_L_LP] = intra_pred_lp;
819 6 h->intra_pred_l[INTRA_L_DOWN_LEFT] = intra_pred_down_left;
820 6 h->intra_pred_l[INTRA_L_DOWN_RIGHT] = intra_pred_down_right;
821 6 h->intra_pred_l[INTRA_L_LP_LEFT] = intra_pred_lp_left;
822 6 h->intra_pred_l[INTRA_L_LP_TOP] = intra_pred_lp_top;
823 6 h->intra_pred_l[INTRA_L_DC_128] = intra_pred_dc_128;
824 6 h->intra_pred_c[INTRA_C_LP] = intra_pred_lp;
825 6 h->intra_pred_c[INTRA_C_HORIZ] = intra_pred_horiz;
826 6 h->intra_pred_c[INTRA_C_VERT] = intra_pred_vert;
827 6 h->intra_pred_c[INTRA_C_PLANE] = intra_pred_plane;
828 6 h->intra_pred_c[INTRA_C_LP_LEFT] = intra_pred_lp_left;
829 6 h->intra_pred_c[INTRA_C_LP_TOP] = intra_pred_lp_top;
830 6 h->intra_pred_c[INTRA_C_DC_128] = intra_pred_dc_128;
831 6 h->mv[7] = un_mv;
832 6 h->mv[19] = un_mv;
833 6 return 0;
834 }
835
836 6 av_cold int ff_cavs_end(AVCodecContext *avctx)
837 {
838 6 AVSContext *h = avctx->priv_data;
839
840 6 av_frame_free(&h->cur.f);
841 6 av_frame_free(&h->DPB[0].f);
842 6 av_frame_free(&h->DPB[1].f);
843
844 6 av_freep(&h->top_qp);
845 6 av_freep(&h->top_mv[0]);
846 6 av_freep(&h->top_mv[1]);
847 6 av_freep(&h->top_pred_Y);
848 6 av_freep(&h->top_border_y);
849 6 av_freep(&h->top_border_u);
850 6 av_freep(&h->top_border_v);
851 6 av_freep(&h->col_mv);
852 6 av_freep(&h->col_type_base);
853 6 av_freep(&h->block);
854 6 av_freep(&h->edge_emu_buffer);
855 6 return 0;
856 }
857