FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/vvc/intra.c
Date: 2025-08-03 13:40:39
Exec Total Coverage
Lines: 435 463 94.0%
Functions: 27 29 93.1%
Branches: 292 318 91.8%
Line Branch Exec Source
1 /*
2 * VVC intra prediction
3 *
4 * Copyright (C) 2021 Nuo Mi
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 #include "libavutil/frame.h"
23 #include "libavutil/imgutils.h"
24
25 #include "data.h"
26 #include "inter.h"
27 #include "intra.h"
28 #include "itx_1d.h"
29
30 #define POS(c_idx, x, y) \
31 &fc->frame->data[c_idx][((y) >> fc->ps.sps->vshift[c_idx]) * fc->frame->linesize[c_idx] + \
32 (((x) >> fc->ps.sps->hshift[c_idx]) << fc->ps.sps->pixel_shift)]
33
34 395164 static int is_cclm(enum IntraPredMode mode)
35 {
36
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 395164 return mode == INTRA_LT_CCLM || mode == INTRA_L_CCLM || mode == INTRA_T_CCLM;
37 }
38
39 171081 static int derive_ilfnst_pred_mode_intra(const VVCLocalContext *lc, const TransformBlock *tb)
40 {
41 171081 const VVCFrameContext *fc = lc->fc;
42 171081 const VVCSPS *sps = fc->ps.sps;
43 171081 const CodingUnit *cu = lc->cu;
44 171081 const int x_tb = tb->x0 >> fc->ps.sps->min_cb_log2_size_y;
45 171081 const int y_tb = tb->y0 >> fc->ps.sps->min_cb_log2_size_y;
46 171081 const int x_c = (tb->x0 + (tb->tb_width << sps->hshift[1] >> 1) ) >> fc->ps.sps->min_cb_log2_size_y;
47 171081 const int y_c = (tb->y0 + (tb->tb_height << sps->vshift[1] >> 1)) >> fc->ps.sps->min_cb_log2_size_y;
48 171081 const int min_cb_width = fc->ps.pps->min_cb_width;
49 171081 const int intra_mip_flag = SAMPLE_CTB(fc->tab.imf, x_tb, y_tb);
50
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 171081 int pred_mode_intra = tb->c_idx == 0 ? cu->intra_pred_mode_y : cu->intra_pred_mode_c;
51
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 171081 if (intra_mip_flag && !tb->c_idx) {
52 5088 pred_mode_intra = INTRA_PLANAR;
53
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 165993 } else if (is_cclm(pred_mode_intra)) {
54 15840 int intra_mip_flag_c = SAMPLE_CTB(fc->tab.imf, x_c, y_c);
55 15840 int cu_pred_mode = SAMPLE_CTB(fc->tab.cpm[0], x_c, y_c);
56
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 15840 if (intra_mip_flag_c) {
57 4442 pred_mode_intra = INTRA_PLANAR;
58
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 11398 } else if (cu_pred_mode == MODE_IBC || cu_pred_mode == MODE_PLT) {
59 972 pred_mode_intra = INTRA_DC;
60 } else {
61 10426 pred_mode_intra = SAMPLE_CTB(fc->tab.ipm, x_c, y_c);
62 }
63 }
64 171081 pred_mode_intra = ff_vvc_wide_angle_mode_mapping(cu, tb->tb_width, tb->tb_height, tb->c_idx, pred_mode_intra);
65
66 171081 return pred_mode_intra;
67 }
68
69 //8.7.4 Transformation process for scaled transform coefficients
70 171081 static void ilfnst_transform(const VVCLocalContext *lc, TransformBlock *tb)
71 {
72 171081 const VVCSPS *sps = lc->fc->ps.sps;
73 171081 const CodingUnit *cu = lc->cu;
74 171081 const int w = tb->tb_width;
75 171081 const int h = tb->tb_height;
76
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 171081 const int n_lfnst_out_size = (w >= 8 && h >= 8) ? 48 : 16; ///< nLfnstOutSize
77
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 171081 const int log2_lfnst_size = (w >= 8 && h >= 8) ? 3 : 2; ///< log2LfnstSize
78 171081 const int n_lfnst_size = 1 << log2_lfnst_size; ///< nLfnstSize
79
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 171081 const int non_zero_size = ((w == 8 && h == 8) || (w == 4 && h == 4)) ? 8 : 16; ///< nonZeroSize
80 171081 const int pred_mode_intra = derive_ilfnst_pred_mode_intra(lc, tb);
81 171081 const int transpose = pred_mode_intra > 34;
82 int u[16], v[48];
83
84
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 2414673 for (int x = 0; x < non_zero_size; x++) {
85 2243592 int xc = ff_vvc_diag_scan_x[2][2][x];
86 2243592 int yc = ff_vvc_diag_scan_y[2][2][x];
87 2243592 u[x] = tb->coeffs[w * yc + xc];
88 }
89 171081 ff_vvc_inv_lfnst_1d(v, u, non_zero_size, n_lfnst_out_size, pred_mode_intra,
90 171081 cu->lfnst_idx, sps->log2_transform_range);
91
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 171081 if (transpose) {
92 49682 int *dst = tb->coeffs;
93 49682 const int *src = v;
94
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 49682 if (n_lfnst_size == 4) {
95
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 172800 for (int y = 0; y < 4; y++) {
96 138240 dst[0] = src[0];
97 138240 dst[1] = src[4];
98 138240 dst[2] = src[8];
99 138240 dst[3] = src[12];
100 138240 src++;
101 138240 dst += w;
102 }
103 } else {
104
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 136098 for (int y = 0; y < 8; y++) {
105 120976 dst[0] = src[0];
106 120976 dst[1] = src[8];
107 120976 dst[2] = src[16];
108 120976 dst[3] = src[24];
109
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 120976 if (y < 4) {
110 60488 dst[4] = src[32];
111 60488 dst[5] = src[36];
112 60488 dst[6] = src[40];
113 60488 dst[7] = src[44];
114 }
115 120976 src++;
116 120976 dst += w;
117 }
118 }
119
120 } else {
121 121399 int *dst = tb->coeffs;
122 121399 const int *src = v;
123
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 819795 for (int y = 0; y < n_lfnst_size; y++) {
124
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 698396 int size = (y < 4) ? n_lfnst_size : 4;
125 698396 memcpy(dst, src, size * sizeof(int));
126 698396 src += size;
127 698396 dst += w;
128 }
129 }
130 171081 tb->max_scan_x = n_lfnst_size - 1;
131 171081 tb->max_scan_y = n_lfnst_size - 1;
132 171081 }
133
134 //part of 8.7.4 Transformation process for scaled transform coefficients
135 923289 static void derive_transform_type(const VVCFrameContext *fc, const VVCLocalContext *lc, const TransformBlock *tb, enum VVCTxType *trh, enum VVCTxType *trv)
136 {
137 923289 const CodingUnit *cu = lc->cu;
138 static const enum VVCTxType mts_to_trh[] = { VVC_DCT2, VVC_DST7, VVC_DCT8, VVC_DST7, VVC_DCT8 };
139 static const enum VVCTxType mts_to_trv[] = { VVC_DCT2, VVC_DST7, VVC_DST7, VVC_DCT8, VVC_DCT8 };
140 923289 const VVCSPS *sps = fc->ps.sps;
141 923289 int implicit_mts_enabled = 0;
142
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 923289 if (tb->c_idx || (cu->isp_split_type != ISP_NO_SPLIT && cu->lfnst_idx)) {
143 283504 *trh = *trv = VVC_DCT2;
144 283504 return;
145 }
146
147
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 639785 if (sps->r->sps_mts_enabled_flag) {
148
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 635891 if (cu->isp_split_type != ISP_NO_SPLIT ||
149
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 530150 (cu->sbt_flag && FFMAX(tb->tb_width, tb->tb_height) <= 32) ||
150
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 496473 (!sps->r->sps_explicit_mts_intra_enabled_flag && cu->pred_mode == MODE_INTRA &&
151
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 28412 !cu->lfnst_idx && !cu->intra_mip_flag)) {
152 154010 implicit_mts_enabled = 1;
153 }
154 }
155
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 639785 if (implicit_mts_enabled) {
156 154010 const int w = tb->tb_width;
157 154010 const int h = tb->tb_height;
158
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 154010 if (cu->sbt_flag) {
159
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 33677 *trh = (cu->sbt_horizontal_flag || cu->sbt_pos_flag) ? VVC_DST7 : VVC_DCT8;
160
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 33677 *trv = (!cu->sbt_horizontal_flag || cu->sbt_pos_flag) ? VVC_DST7 : VVC_DCT8;
161 } else {
162
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 120333 *trh = (w >= 4 && w <= 16) ? VVC_DST7 : VVC_DCT2;
163
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 120333 *trv = (h >= 4 && h <= 16) ? VVC_DST7 : VVC_DCT2;
164 }
165 154010 return;
166 }
167 485775 *trh = mts_to_trh[cu->mts_idx];
168 485775 *trv = mts_to_trv[cu->mts_idx];
169 }
170
171 1918572 static int add_reconstructed_area(VVCLocalContext *lc, const int ch_type, const int x0, const int y0, const int w, const int h)
172 {
173 1918572 const VVCSPS *sps = lc->fc->ps.sps;
174 1918572 const int hs = sps->hshift[ch_type];
175 1918572 const int vs = sps->vshift[ch_type];
176 ReconstructedArea *a;
177
178
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 1918572 if (lc->num_ras[ch_type] >= FF_ARRAY_ELEMS(lc->ras[ch_type]))
179 ✗ return AVERROR_INVALIDDATA;
180
181 1918572 a = &lc->ras[ch_type][lc->num_ras[ch_type]];
182 1918572 a->x = x0 >> hs;
183 1918572 a->y = y0 >> vs;
184 1918572 a->w = w >> hs;
185 1918572 a->h = h >> vs;
186 1918572 lc->num_ras[ch_type]++;
187
188 1918572 return 0;
189 }
190
191 963998 static void add_tu_area(const TransformUnit *tu, int *x0, int *y0, int *w, int *h)
192 {
193 963998 *x0 = tu->x0;
194 963998 *y0 = tu->y0;
195 963998 *w = tu->width;
196 963998 *h = tu->height;
197 963998 }
198
199 #define MIN_ISP_PRED_WIDTH 4
200 740018 static int get_luma_predict_unit(const CodingUnit *cu, const TransformUnit *tu, const int idx, int *x0, int *y0, int *w, int *h)
201 {
202 740018 int has_luma = 1;
203 740018 add_tu_area(tu, x0, y0, w, h);
204
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 740018 if (cu->isp_split_type == ISP_VER_SPLIT && tu->width < MIN_ISP_PRED_WIDTH) {
205 26318 *w = MIN_ISP_PRED_WIDTH;
206 26318 has_luma = !(idx % (MIN_ISP_PRED_WIDTH / tu->width));
207 }
208 740018 return has_luma;
209 }
210
211 244690 static int get_chroma_predict_unit(const CodingUnit *cu, const TransformUnit *tu, const int idx, int *x0, int *y0, int *w, int *h)
212 {
213
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 244690 if (cu->isp_split_type == ISP_NO_SPLIT) {
214 223980 add_tu_area(tu, x0, y0, w, h);
215 223980 return 1;
216 }
217
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 20710 if (idx == cu->num_intra_subpartitions - 1) {
218 5191 *x0 = cu->x0;
219 5191 *y0 = cu->y0;
220 5191 *w = cu->cb_width;
221 5191 *h = cu->cb_height;
222 5191 return 1;
223 }
224 15519 return 0;
225 }
226
227 //8.4.5.1 General decoding process for intra blocks
228 1400823 static void predict_intra(VVCLocalContext *lc, const TransformUnit *tu, const int idx, const int target_ch_type)
229 {
230 1400823 const VVCFrameContext *fc = lc->fc;
231 1400823 const CodingUnit *cu = lc->cu;
232 1400823 const VVCTreeType tree_type = cu->tree_type;
233 int x0, y0, w, h;
234
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 1400823 if (cu->pred_mode != MODE_INTRA) {
235 416115 add_reconstructed_area(lc, target_ch_type, tu->x0, tu->y0, tu->width, tu->height);
236 416115 return;
237 }
238
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 984708 if (!target_ch_type && tree_type != DUAL_TREE_CHROMA) {
239
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 740018 if (get_luma_predict_unit(cu, tu, idx, &x0, &y0, &w, &h)) {
240 725823 ff_vvc_set_neighbour_available(lc, x0, y0, w, h);
241 725823 fc->vvcdsp.intra.intra_pred(lc, x0, y0, w, h, 0);
242 725823 add_reconstructed_area(lc, 0, x0, y0, w, h);
243 }
244 }
245
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 984708 if (target_ch_type && tree_type != DUAL_TREE_LUMA) {
246
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 244690 if (get_chroma_predict_unit(cu, tu, idx, &x0, &y0, &w, &h)){
247 229171 ff_vvc_set_neighbour_available(lc, x0, y0, w, h);
248
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 229171 if (is_cclm(cu->intra_pred_mode_c)) {
249 92330 fc->vvcdsp.intra.intra_cclm_pred(lc, x0, y0, w, h);
250 } else {
251 136841 fc->vvcdsp.intra.intra_pred(lc, x0, y0, w, h, 1);
252 136841 fc->vvcdsp.intra.intra_pred(lc, x0, y0, w, h, 2);
253 }
254 229171 add_reconstructed_area(lc, 1, x0, y0, w, h);
255 }
256 }
257 }
258
259 863387 static void scale_clip(int *coeff, const int nzw, const int w, const int h,
260 const int shift, const int log2_transform_range)
261 {
262 863387 const int add = 1 << (shift - 1);
263
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 9798267 for (int y = 0; y < h; y++) {
264 8934880 int *p = coeff + y * w;
265
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 57235992 for (int x = 0; x < nzw; x++) {
266 48301112 *p = av_clip_intp2((*p + add) >> shift, log2_transform_range);
267 48301112 p++;
268 }
269 8934880 memset(p, 0, sizeof(*p) * (w - nzw));
270 }
271 863387 }
272
273 876208 static void scale(int *out, const int *in, const int w, const int h, const int shift)
274 {
275 876208 const int add = 1 << (shift - 1);
276
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277
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278 150691500 int *o = out + y * w + x;
279 150691500 const int *i = in + y * w + x;
280 150691500 *o = (*i + add) >> shift;
281 }
282 }
283 876208 }
284
285 // part of 8.7.3 Scaling process for transform coefficients
286 952114 static void derive_qp(const VVCLocalContext *lc, const TransformUnit *tu, TransformBlock *tb)
287 {
288 952114 const VVCSPS *sps = lc->fc->ps.sps;
289 952114 const H266RawSliceHeader *rsh = lc->sc->sh.r;
290 952114 const CodingUnit *cu = lc->cu;
291
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 952114 const bool is_jcbcr = tb->c_idx && tu->joint_cbcr_residual_flag && tu->coded_flag[CB] && tu->coded_flag[CR];
292
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 952114 const int idx = is_jcbcr ? JCBCR : tb->c_idx;
293
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 952114 const int qp = cu->qp[idx] + (idx ? 0 : sps->qp_bd_offset);
294 952114 const int act_offset[] = { -5, 1, 3, 1 };
295
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 952114 const int qp_act_offset = cu->act_enabled_flag ? act_offset[idx] : 0;
296
297
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 952114 if (tb->ts) {
298 28825 const int qp_prime_ts_min = 4 + 6 * sps->r->sps_min_qp_prime_ts;
299
300 28825 tb->qp = av_clip(qp + qp_act_offset, qp_prime_ts_min, 63 + sps->qp_bd_offset);
301 28825 tb->rect_non_ts_flag = 0;
302 28825 tb->bd_shift = 10;
303 } else {
304 923289 const int log_sum = tb->log2_tb_width + tb->log2_tb_height;
305 923289 const int rect_non_ts_flag = log_sum & 1;
306
307 923289 tb->qp = av_clip(qp + qp_act_offset, 0, 63 + sps->qp_bd_offset);
308 923289 tb->rect_non_ts_flag = rect_non_ts_flag;
309 923289 tb->bd_shift = sps->bit_depth + rect_non_ts_flag + (log_sum / 2)
310 923289 + 10 - sps->log2_transform_range + rsh->sh_dep_quant_used_flag;
311 }
312 952114 tb->bd_offset = (1 << tb->bd_shift) >> 1;
313 952114 }
314
315 static const uint8_t rem6[63 + 8 * 6 + 1] = {
316 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5,
317 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5,
318 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5,
319 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5,
320 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3,
321 };
322
323 static const uint8_t div6[63 + 8 * 6 + 1] = {
324 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3,
325 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7,
326 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11,
327 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15,
328 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18,
329 };
330
331 const static int level_scale[2][6] = {
332 { 40, 45, 51, 57, 64, 72 },
333 { 57, 64, 72, 80, 90, 102 }
334 };
335
336 //8.7.3 Scaling process for transform coefficients
337 952114 static av_always_inline int derive_scale(const TransformBlock *tb, const int sh_dep_quant_used_flag)
338 {
339
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 952114 const int addin = sh_dep_quant_used_flag && !tb->ts;
340 952114 const int qp = tb->qp + addin;
341
342 952114 return level_scale[tb->rect_non_ts_flag][rem6[qp]] << div6[qp];
343 }
344
345 //8.7.3 Scaling process for transform coefficients
346 952114 static const uint8_t* derive_scale_m(const VVCLocalContext *lc, const TransformBlock *tb, uint8_t *scale_m)
347 {
348 //Table 38 – Specification of the scaling matrix identifier variable id according to predMode, cIdx, nTbW, and nTbH
349 952114 const int ids[2][3][6] = {
350 {
351 { 0, 2, 8, 14, 20, 26 },
352 { 0, 3, 9, 15, 21, 21 },
353 { 0, 4, 10, 16, 22, 22 }
354 },
355 {
356 { 0, 5, 11, 17, 23, 27 },
357 { 0, 6, 12, 18, 24, 24 },
358 { 1, 7, 13, 19, 25, 25 },
359 }
360 };
361 952114 const VVCFrameParamSets *ps = &lc->fc->ps;
362 952114 const VVCSPS *sps = ps->sps;
363 952114 const H266RawSliceHeader *rsh = lc->sc->sh.r;
364 952114 const CodingUnit *cu = lc->cu;
365 952114 const VVCScalingList *sl = ps->sl;
366 952114 const int id = ids[cu->pred_mode != MODE_INTRA][tb->c_idx][FFMAX(tb->log2_tb_height, tb->log2_tb_width) - 1];
367
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 952114 const int log2_matrix_size = (id < 2) ? 1 : (id < 8) ? 2 : 3;
368 952114 uint8_t *p = scale_m;
369
370
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 952114 if (!rsh->sh_explicit_scaling_list_used_flag || tb->ts ||
371
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 97122 (sps->r->sps_scaling_matrix_for_lfnst_disabled_flag && cu->apply_lfnst_flag[tb->c_idx]) ||
372
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 65726 (sps->r->sps_scaling_matrix_for_alternative_colour_space_disabled_flag &&
373 ✗ sps->r->sps_scaling_matrix_designated_colour_space_flag == cu->act_enabled_flag))
374 886388 return ff_vvc_default_scale_m;
375
376
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 65726 if (!sl) {
377 ✗ av_log(lc->fc->log_ctx, AV_LOG_WARNING, "bug: no scaling list aps, id = %d", ps->ph.r->ph_scaling_list_aps_id);
378 ✗ return ff_vvc_default_scale_m;
379 }
380
381
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 392532 for (int y = tb->min_scan_y; y <= tb->max_scan_y; y++) {
382 326806 const int off = y << log2_matrix_size >> tb->log2_tb_height << log2_matrix_size;
383 326806 const uint8_t *m = &sl->scaling_matrix_rec[id][off];
384
385
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 2185888 for (int x = tb->min_scan_x; x <= tb->max_scan_x; x++)
386 1859082 *p++ = m[x << log2_matrix_size >> tb->log2_tb_width];
387 }
388
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 65726 if (id >= SL_START_16x16 && !tb->min_scan_x && !tb->min_scan_y)
389 27312 *scale_m = sl->scaling_matrix_dc_rec[id - SL_START_16x16];
390
391 65726 return scale_m;
392 }
393
394 //8.7.3 Scaling process for transform coefficients
395 11473467 static av_always_inline int scale_coeff(const TransformBlock *tb, int coeff,
396 const int scale, const int scale_m, const int log2_transform_range)
397 {
398 11473467 coeff = ((int64_t) coeff * scale * scale_m + tb->bd_offset) >> tb->bd_shift;
399 11473467 coeff = av_clip_intp2(coeff, log2_transform_range);
400 11473467 return coeff;
401 }
402
403 952114 static void dequant(const VVCLocalContext *lc, const TransformUnit *tu, TransformBlock *tb)
404 {
405 uint8_t tmp[MAX_TB_SIZE * MAX_TB_SIZE];
406 952114 const H266RawSliceHeader *rsh = lc->sc->sh.r;
407 952114 const VVCSPS *sps = lc->fc->ps.sps;
408 952114 const uint8_t *scale_m = derive_scale_m(lc, tb, tmp);
409 int scale;
410
411 952114 derive_qp(lc, tu, tb);
412 952114 scale = derive_scale(tb, rsh->sh_dep_quant_used_flag);
413
414
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 4690289 for (int y = tb->min_scan_y; y <= tb->max_scan_y; y++) {
415
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 26389090 for (int x = tb->min_scan_x; x <= tb->max_scan_x; x++) {
416 22650915 int *coeff = tb->coeffs + y * tb->tb_width + x;
417
418
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 22650915 if (*coeff)
419 11473467 *coeff = scale_coeff(tb, *coeff, scale, *scale_m, sps->log2_transform_range);
420 22650915 scale_m++;
421 }
422 }
423 952114 }
424
425 //transmatrix[0][0]
426 #define DCT_A 64
427 907442 static void itx_2d(const VVCFrameContext *fc, TransformBlock *tb, const enum VVCTxType trh, const enum VVCTxType trv)
428 {
429 907442 const VVCSPS *sps = fc->ps.sps;
430 907442 const int w = tb->tb_width;
431 907442 const int h = tb->tb_height;
432 907442 const size_t nzw = tb->max_scan_x + 1;
433 907442 const size_t nzh = tb->max_scan_y + 1;
434 907442 const int shift[] = { 7, 5 + sps->log2_transform_range - sps->bit_depth };
435
436
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 907442 if (w == h && nzw == 1 && nzh == 1 && trh == VVC_DCT2 && trv == VVC_DCT2) {
437 44055 const int add[] = { 1 << (shift[0] - 1), 1 << (shift[1] - 1) };
438 44055 const int t = (tb->coeffs[0] * DCT_A + add[0]) >> shift[0];
439 44055 const int dc = (t * DCT_A + add[1]) >> shift[1];
440
441
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 15488679 for (int i = 0; i < w * h; i++)
442 15444624 tb->coeffs[i] = dc;
443
444 44055 return;
445 }
446
447
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 4996393 for (int x = 0; x < nzw; x++)
448 4133006 fc->vvcdsp.itx.itx[trv][tb->log2_tb_height - 1](tb->coeffs + x, w, nzh);
449 863387 scale_clip(tb->coeffs, nzw, w, h, shift[0], sps->log2_transform_range);
450
451
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 9798267 for (int y = 0; y < h; y++)
452 8934880 fc->vvcdsp.itx.itx[trh][tb->log2_tb_width - 1](tb->coeffs + y * w, 1, nzw);
453 863387 scale(tb->coeffs, tb->coeffs, w, h, shift[1]);
454 }
455
456 15847 static void itx_1d(const VVCFrameContext *fc, TransformBlock *tb, const enum VVCTxType trh, const enum VVCTxType trv)
457 {
458 15847 const VVCSPS *sps = fc->ps.sps;
459 15847 const int w = tb->tb_width;
460 15847 const int h = tb->tb_height;
461 15847 const size_t nzw = tb->max_scan_x + 1;
462 15847 const size_t nzh = tb->max_scan_y + 1;
463
464
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 15847 if ((w > 1 && nzw == 1 && trh == VVC_DCT2) || (h > 1 && nzh == 1 && trv == VVC_DCT2)) {
465 3026 const int shift = 6 + sps->log2_transform_range - sps->bit_depth;
466 3026 const int add = 1 << (shift - 1);
467 3026 const int dc = (tb->coeffs[0] * DCT_A + add) >> shift;
468
469
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 100210 for (int i = 0; i < w * h; i++)
470 97184 tb->coeffs[i] = dc;
471
472 3026 return;
473 }
474
475
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 12821 if (w > 1)
476 10218 fc->vvcdsp.itx.itx[trh][tb->log2_tb_width - 1](tb->coeffs, 1, nzw);
477 else
478 2603 fc->vvcdsp.itx.itx[trv][tb->log2_tb_height - 1](tb->coeffs, 1, nzh);
479 12821 scale(tb->coeffs, tb->coeffs, w, h, 6 + sps->log2_transform_range - sps->bit_depth);
480 }
481
482 10 static void transform_bdpcm(TransformBlock *tb, const VVCLocalContext *lc, const CodingUnit *cu)
483 {
484 10 const VVCSPS *sps = lc->fc->ps.sps;
485
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 10 const IntraPredMode mode = tb->c_idx ? cu->intra_pred_mode_c : cu->intra_pred_mode_y;
486 10 const int vertical = mode == INTRA_VERT;
487 10 lc->fc->vvcdsp.itx.transform_bdpcm(tb->coeffs, tb->tb_width, tb->tb_height,
488 10 vertical, sps->log2_transform_range);
489
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 10 if (vertical)
490 4 tb->max_scan_y = tb->tb_height - 1;
491 else
492 6 tb->max_scan_x = tb->tb_width - 1;
493 10 }
494
495 952114 static void lmcs_scale_chroma(VVCLocalContext *lc, TransformUnit *tu, TransformBlock *tb, const int target_ch_type)
496 {
497 952114 const VVCFrameContext *fc = lc->fc;
498 952114 const VVCSH *sh = &lc->sc->sh;
499 952114 const CodingUnit *cu = lc->cu;
500 952114 const int c_idx = tb->c_idx;
501 952114 const int ch_type = c_idx > 0;
502 952114 const int w = tb->tb_width;
503 952114 const int h = tb->tb_height;
504
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 952114 const int chroma_scale = ch_type && sh->r->sh_lmcs_used_flag && fc->ps.ph.r->ph_chroma_residual_scale_flag && (w * h > 4);
505
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 952114 const int has_jcbcr = tu->joint_cbcr_residual_flag && c_idx;
506
507
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 1956496 for (int j = 0; j < 1 + has_jcbcr; j++) {
508 1004382 const bool is_jcbcr = j > 0;
509 1004382 const int jcbcr_idx = CB + tu->coded_flag[CB];
510 1004382 TransformBlock *jcbcr = &tu->tbs[jcbcr_idx - tu->tbs[0].c_idx];
511
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 1004382 int *coeffs = is_jcbcr ? jcbcr->coeffs : tb->coeffs;
512
513
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 1004382 if (!j && has_jcbcr) {
514 52268 const int c_sign = 1 - 2 * fc->ps.ph.r->ph_joint_cbcr_sign_flag;
515 52268 const int shift = tu->coded_flag[CB] ^ tu->coded_flag[CR];
516 52268 fc->vvcdsp.itx.pred_residual_joint(jcbcr->coeffs, tb->coeffs, w, h, c_sign, shift);
517 }
518
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 1004382 if (chroma_scale)
519 143362 fc->vvcdsp.intra.lmcs_scale_chroma(lc, coeffs, w, h, cu->x0, cu->y0);
520 }
521 952114 }
522
523 1400823 static void add_residual(const VVCLocalContext *lc, TransformUnit *tu, const int target_ch_type)
524 {
525 1400823 const VVCFrameContext *fc = lc->fc;
526 1400823 const CodingUnit *cu = lc->cu;
527
528
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 3982907 for (int i = 0; i < tu->nb_tbs; i++) {
529 2582084 TransformBlock *tb = tu->tbs + i;
530 2582084 const int c_idx = tb->c_idx;
531 2582084 const int ch_type = c_idx > 0;
532 2582084 const ptrdiff_t stride = fc->frame->linesize[c_idx];
533
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 3605942 const bool has_residual = tb->has_coeffs || cu->act_enabled_flag ||
534
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 1023858 (c_idx && tu->joint_cbcr_residual_flag);
535 2582084 uint8_t *dst = POS(c_idx, tb->x0, tb->y0);
536
537
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 2582084 if (ch_type == target_ch_type && has_residual)
538 1004382 fc->vvcdsp.itx.add_residual(dst, tb->coeffs, tb->tb_width, tb->tb_height, stride);
539 }
540 1400823 }
541
542 1400823 static void itransform(VVCLocalContext *lc, TransformUnit *tu, const int target_ch_type)
543 {
544 1400823 const VVCFrameContext *fc = lc->fc;
545 1400823 const CodingUnit *cu = lc->cu;
546 1400823 TransformBlock *tbs = tu->tbs;
547
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 1400823 const bool is_act_luma = cu->act_enabled_flag && target_ch_type == LUMA;
548
549
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 3982907 for (int i = 0; i < tu->nb_tbs; i++) {
550 2582084 TransformBlock *tb = tbs + i;
551 2582084 const int c_idx = tb->c_idx;
552 2582084 const int ch_type = c_idx > 0;
553
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 2582084 const bool do_itx = is_act_luma || !cu->act_enabled_flag && ch_type == target_ch_type;
554
555
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 2582084 if (tb->has_coeffs && do_itx) {
556
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 952114 if (cu->bdpcm_flag[tb->c_idx])
557 10 transform_bdpcm(tb, lc, cu);
558 952114 dequant(lc, tu, tb);
559
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 952114 if (!tb->ts) {
560 enum VVCTxType trh, trv;
561
562
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 923289 if (cu->apply_lfnst_flag[c_idx])
563 171081 ilfnst_transform(lc, tb);
564 923289 derive_transform_type(fc, lc, tb, &trh, &trv);
565
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 923289 if (tb->tb_width > 1 && tb->tb_height > 1)
566 907442 itx_2d(fc, tb, trh, trv);
567 else
568 15847 itx_1d(fc, tb, trh, trv);
569 }
570 952114 lmcs_scale_chroma(lc, tu, tb, target_ch_type);
571 }
572 }
573
574
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 1400823 if (is_act_luma) {
575 ✗ fc->vvcdsp.itx.adaptive_color_transform(
576 ✗ tbs[LUMA].coeffs, tbs[CB].coeffs, tbs[CR].coeffs,
577 tbs[LUMA].tb_width, tbs[LUMA].tb_height);
578 }
579
580 1400823 add_residual(lc, tu, target_ch_type);
581 1400823 }
582
583 938287 static int reconstruct(VVCLocalContext *lc)
584 {
585 938287 VVCFrameContext *fc = lc->fc;
586 938287 CodingUnit *cu = lc->cu;
587 938287 const int start = cu->tree_type == DUAL_TREE_CHROMA;
588
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 938287 const int end = fc->ps.sps->r->sps_chroma_format_idc && (cu->tree_type != DUAL_TREE_LUMA);
589
590
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 2073765 for (int ch_type = start; ch_type <= end; ch_type++) {
591 1135478 TransformUnit *tu = cu->tus.head;
592
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 2536301 for (int i = 0; tu; i++) {
593 1400823 predict_intra(lc, tu, i, ch_type);
594 1400823 itransform(lc, tu, ch_type);
595 1400823 tu = tu->next;
596 }
597 }
598 938287 return 0;
599 }
600
601 #define IBC_POS(c_idx, x, y) \
602 (fc->tab.ibc_vir_buf[c_idx] + \
603 (x << ps) + (y + ((cu->y0 & ~(sps->ctb_size_y - 1)) >> vs)) * ibc_stride)
604 #define IBC_X(x) ((x) & ((fc->tab.sz.ibc_buffer_width >> hs) - 1))
605 #define IBC_Y(y) ((y) & ((1 << sps->ctb_log2_size_y >> vs) - 1))
606
607 31272 static void intra_block_copy(const VVCLocalContext *lc, const int c_idx)
608 {
609 31272 const CodingUnit *cu = lc->cu;
610 31272 const PredictionUnit *pu = &cu->pu;
611 31272 const VVCFrameContext *fc = lc->fc;
612 31272 const VVCSPS *sps = fc->ps.sps;
613 31272 const Mv *bv = &pu->mi.mv[L0][0];
614 31272 const int hs = sps->hshift[c_idx];
615 31272 const int vs = sps->vshift[c_idx];
616 31272 const int ps = sps->pixel_shift;
617 31272 const int ref_x = IBC_X((cu->x0 >> hs) + (bv->x >> (4 + hs)));
618 31272 const int ref_y = IBC_Y((cu->y0 >> vs) + (bv->y >> (4 + vs)));
619 31272 const int w = cu->cb_width >> hs;
620 31272 const int h = cu->cb_height >> vs;
621 31272 const int ibc_buf_width = fc->tab.sz.ibc_buffer_width >> hs; ///< IbcBufWidthY and IbcBufWidthC
622 31272 const int rw = FFMIN(w, ibc_buf_width - ref_x);
623 31272 const int ibc_stride = ibc_buf_width << ps;
624 31272 const int dst_stride = fc->frame->linesize[c_idx];
625 31272 const uint8_t *ibc_buf = IBC_POS(c_idx, ref_x, ref_y);
626 31272 uint8_t *dst = POS(c_idx, cu->x0, cu->y0);
627
628 31272 av_image_copy_plane(dst, dst_stride, ibc_buf, ibc_stride, rw << ps, h);
629
630
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 31272 if (w > rw) {
631 //wrap around, left part
632 31 ibc_buf = IBC_POS(c_idx, 0, ref_y);
633 31 dst += rw << ps;
634 31 av_image_copy_plane(dst, dst_stride, ibc_buf, ibc_stride, (w - rw) << ps, h);
635 }
636 31272 }
637
638 31182 static void vvc_predict_ibc(const VVCLocalContext *lc)
639 {
640 31182 const H266RawSPS *rsps = lc->fc->ps.sps->r;
641
642 31182 intra_block_copy(lc, LUMA);
643
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 31182 if (lc->cu->tree_type == SINGLE_TREE && rsps->sps_chroma_format_idc) {
644 45 intra_block_copy(lc, CB);
645 45 intra_block_copy(lc, CR);
646 }
647 31182 }
648
649 127411 static void ibc_fill_vir_buf(const VVCLocalContext *lc, const CodingUnit *cu)
650 {
651 127411 const VVCFrameContext *fc = lc->fc;
652 127411 const VVCSPS *sps = fc->ps.sps;
653 int start, end;
654
655 127411 ff_vvc_channel_range(&start, &end, cu->tree_type, sps->r->sps_chroma_format_idc);
656
657
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 323231 for (int c_idx = start; c_idx < end; c_idx++) {
658 195820 const int hs = sps->hshift[c_idx];
659 195820 const int vs = sps->vshift[c_idx];
660 195820 const int ps = sps->pixel_shift;
661 195820 const int x = IBC_X(cu->x0 >> hs);
662 195820 const int y = IBC_Y(cu->y0 >> vs);
663 195820 const int src_stride = fc->frame->linesize[c_idx];
664 195820 const int ibc_stride = fc->tab.sz.ibc_buffer_width >> hs << ps;
665 195820 const uint8_t *src = POS(c_idx, cu->x0, cu->y0);
666 195820 uint8_t *ibc_buf = IBC_POS(c_idx, x, y);
667
668 195820 av_image_copy_plane(ibc_buf, ibc_stride, src, src_stride, cu->cb_width >> hs << ps , cu->cb_height >> vs);
669 }
670 127411 }
671
672 ✗ int ff_vvc_palette_derive_scale(VVCLocalContext *lc, const TransformUnit *tu, TransformBlock *tb)
673 {
674 ✗ const VVCSPS *sps = lc->fc->ps.sps;
675 ✗ const int qp_prime_ts_min = 4 + 6 * sps->r->sps_min_qp_prime_ts;
676 int qp;
677
678 ✗ derive_qp(lc, tu, tb);
679 ✗ qp = FFMAX(qp_prime_ts_min, tb->qp);
680 ✗ return level_scale[0][rem6[qp]] << div6[qp];
681 }
682
683 // 8.4.5.3 Decoding process for palette mode
684 ✗ static void vvc_predict_palette(VVCLocalContext *lc)
685 {
686 ✗ const VVCFrameContext *fc = lc->fc;
687 ✗ const CodingUnit *cu = lc->cu;
688 ✗ TransformUnit *tu = cu->tus.head;
689 ✗ const VVCSPS *sps = fc->ps.sps;
690 ✗ const int ps = sps->pixel_shift;
691
692 ✗ for (int i = 0; i < tu->nb_tbs; i++) {
693 ✗ TransformBlock *tb = &tu->tbs[i];
694 ✗ const int c_idx = tb->c_idx;
695 ✗ const int w = tb->tb_width;
696 ✗ const int h = tb->tb_height;
697 ✗ const ptrdiff_t stride = fc->frame->linesize[c_idx];
698 ✗ uint8_t *dst = POS(c_idx, cu->x0, cu->y0);
699
700 ✗ av_image_copy_plane(dst, stride, (uint8_t*)tb->coeffs, w << ps, w << ps, h);
701 }
702 ✗ }
703
704 46713 int ff_vvc_reconstruct(VVCLocalContext *lc, const int rs, const int rx, const int ry)
705 {
706 46713 const VVCFrameContext *fc = lc->fc;
707 46713 const VVCSPS *sps = fc->ps.sps;
708 46713 const int x_ctb = rx << sps->ctb_log2_size_y;
709 46713 const int y_ctb = ry << sps->ctb_log2_size_y;
710 46713 CodingUnit *cu = fc->tab.cus[rs];
711 46713 int ret = 0;
712
713 46713 lc->num_ras[0] = lc->num_ras[1] = 0;
714 46713 lc->lmcs.x_vpdu = -1;
715 46713 lc->lmcs.y_vpdu = -1;
716 46713 ff_vvc_decode_neighbour(lc, x_ctb, y_ctb, rx, ry, rs);
717
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 1279834 while (cu) {
718 1233121 lc->cu = cu;
719
720
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 1233121 if (cu->ciip_flag)
721 15686 ff_vvc_predict_ciip(lc);
722
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 1217435 else if (cu->pred_mode == MODE_IBC)
723 31182 vvc_predict_ibc(lc);
724
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 1186253 else if (cu->pred_mode == MODE_PLT)
725 ✗ vvc_predict_palette(lc);
726
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 1233121 if (cu->coded_flag) {
727 938287 ret = reconstruct(lc);
728 } else {
729
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 294834 if (cu->tree_type != DUAL_TREE_CHROMA)
730 294834 add_reconstructed_area(lc, LUMA, cu->x0, cu->y0, cu->cb_width, cu->cb_height);
731
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 294834 if (sps->r->sps_chroma_format_idc && cu->tree_type != DUAL_TREE_LUMA)
732 252629 add_reconstructed_area(lc, CHROMA, cu->x0, cu->y0, cu->cb_width, cu->cb_height);
733 }
734
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 1233121 if (sps->r->sps_ibc_enabled_flag)
735 127411 ibc_fill_vir_buf(lc, cu);
736 1233121 cu = cu->next;
737 }
738 46713 ff_vvc_ctu_free_cus(fc->tab.cus + rs);
739 46713 return ret;
740 }
741