FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/snowenc.c
Date: 2022-11-28 23:49:43
Exec Total Coverage
Lines: 982 1214 80.9%
Branches: 592 798 74.2%

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1 /*
2 * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "libavutil/intmath.h"
22 #include "libavutil/libm.h"
23 #include "libavutil/log.h"
24 #include "libavutil/opt.h"
25 #include "libavutil/pixdesc.h"
26 #include "avcodec.h"
27 #include "codec_internal.h"
28 #include "encode.h"
29 #include "me_cmp.h"
30 #include "packet_internal.h"
31 #include "snow_dwt.h"
32 #include "snow.h"
33
34 #include "rangecoder.h"
35 #include "mathops.h"
36
37 #include "mpegvideo.h"
38 #include "h263enc.h"
39
40 9 static av_cold int encode_init(AVCodecContext *avctx)
41 {
42 9 SnowContext *s = avctx->priv_data;
43 int plane_index, ret;
44 int i;
45
46
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9 if(s->pred == DWT_97
47
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6 && (avctx->flags & AV_CODEC_FLAG_QSCALE)
48
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6 && avctx->global_quality == 0){
49 av_log(avctx, AV_LOG_ERROR, "The 9/7 wavelet is incompatible with lossless mode.\n");
50 return AVERROR(EINVAL);
51 }
52
53 9 s->spatial_decomposition_type= s->pred; //FIXME add decorrelator type r transform_type
54
55
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9 s->mv_scale = (avctx->flags & AV_CODEC_FLAG_QPEL) ? 2 : 4;
56 9 s->block_max_depth= (avctx->flags & AV_CODEC_FLAG_4MV ) ? 1 : 0;
57
58
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36 for(plane_index=0; plane_index<3; plane_index++){
59 27 s->plane[plane_index].diag_mc= 1;
60 27 s->plane[plane_index].htaps= 6;
61 27 s->plane[plane_index].hcoeff[0]= 40;
62 27 s->plane[plane_index].hcoeff[1]= -10;
63 27 s->plane[plane_index].hcoeff[2]= 2;
64 27 s->plane[plane_index].fast_mc= 1;
65 }
66
67
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9 if ((ret = ff_snow_common_init(avctx)) < 0) {
68 return ret;
69 }
70 9 ff_me_cmp_init(&s->mecc, avctx);
71 9 ff_mpegvideoencdsp_init(&s->mpvencdsp, avctx);
72
73 9 ff_snow_alloc_blocks(s);
74
75 9 s->version=0;
76
77 9 s->m.avctx = avctx;
78 9 s->m.bit_rate= avctx->bit_rate;
79 9 s->m.lmin = avctx->mb_lmin;
80 9 s->m.lmax = avctx->mb_lmax;
81 9 s->m.mb_num = (avctx->width * avctx->height + 255) / 256; // For ratecontrol
82
83 9 s->m.me.temp =
84 9 s->m.me.scratchpad = av_calloc(avctx->width + 64, 2*16*2*sizeof(uint8_t));
85 9 s->m.sc.obmc_scratchpad= av_mallocz(MB_SIZE*MB_SIZE*12*sizeof(uint32_t));
86 9 s->m.me.map = av_mallocz(2 * ME_MAP_SIZE * sizeof(*s->m.me.map));
87
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9 if (!s->m.me.scratchpad || !s->m.me.map || !s->m.sc.obmc_scratchpad)
88 return AVERROR(ENOMEM);
89 9 s->m.me.score_map = s->m.me.map + ME_MAP_SIZE;
90
91 9 ff_h263_encode_init(&s->m); //mv_penalty
92
93 9 s->max_ref_frames = av_clip(avctx->refs, 1, MAX_REF_FRAMES);
94
95
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9 if(avctx->flags&AV_CODEC_FLAG_PASS1){
96 if(!avctx->stats_out)
97 avctx->stats_out = av_mallocz(256);
98
99 if (!avctx->stats_out)
100 return AVERROR(ENOMEM);
101 }
102
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9 if((avctx->flags&AV_CODEC_FLAG_PASS2) || !(avctx->flags&AV_CODEC_FLAG_QSCALE)){
103 ret = ff_rate_control_init(&s->m);
104 if(ret < 0)
105 return ret;
106 }
107 9 s->pass1_rc= !(avctx->flags & (AV_CODEC_FLAG_QSCALE|AV_CODEC_FLAG_PASS2));
108
109
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9 switch(avctx->pix_fmt){
110 9 case AV_PIX_FMT_YUV444P:
111 // case AV_PIX_FMT_YUV422P:
112 case AV_PIX_FMT_YUV420P:
113 // case AV_PIX_FMT_YUV411P:
114 case AV_PIX_FMT_YUV410P:
115 9 s->nb_planes = 3;
116 9 s->colorspace_type= 0;
117 9 break;
118 case AV_PIX_FMT_GRAY8:
119 s->nb_planes = 1;
120 s->colorspace_type = 1;
121 break;
122 /* case AV_PIX_FMT_RGB32:
123 s->colorspace= 1;
124 break;*/
125 }
126
127 9 ret = av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift,
128 &s->chroma_v_shift);
129
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9 if (ret)
130 return ret;
131
132 9 ff_set_cmp(&s->mecc, s->mecc.me_cmp, s->avctx->me_cmp);
133 9 ff_set_cmp(&s->mecc, s->mecc.me_sub_cmp, s->avctx->me_sub_cmp);
134
135 9 s->input_picture = av_frame_alloc();
136
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9 if (!s->input_picture)
137 return AVERROR(ENOMEM);
138
139
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9 if ((ret = ff_snow_get_buffer(s, s->input_picture)) < 0)
140 return ret;
141
142
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9 if(s->motion_est == FF_ME_ITER){
143 6 int size= s->b_width * s->b_height << 2*s->block_max_depth;
144
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12 for(i=0; i<s->max_ref_frames; i++){
145 6 s->ref_mvs[i] = av_calloc(size, sizeof(*s->ref_mvs[i]));
146 6 s->ref_scores[i] = av_calloc(size, sizeof(*s->ref_scores[i]));
147
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6 if (!s->ref_mvs[i] || !s->ref_scores[i])
148 return AVERROR(ENOMEM);
149 }
150 }
151
152 9 return 0;
153 }
154
155 //near copy & paste from dsputil, FIXME
156 827820 static int pix_sum(const uint8_t * pix, int line_size, int w, int h)
157 {
158 int s, i, j;
159
160 827820 s = 0;
161
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162
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49783680 for (j = 0; j < w; j++) {
163 44375040 s += pix[0];
164 44375040 pix ++;
165 }
166 5408640 pix += line_size - w;
167 }
168 827820 return s;
169 }
170
171 //near copy & paste from dsputil, FIXME
172 275940 static int pix_norm1(const uint8_t * pix, int line_size, int w)
173 {
174 int s, i, j;
175 275940 const uint32_t *sq = ff_square_tab + 256;
176
177 275940 s = 0;
178
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2980260 for (i = 0; i < w; i++) {
179
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32287680 for (j = 0; j < w; j ++) {
180 29583360 s += sq[pix[0]];
181 29583360 pix ++;
182 }
183 2704320 pix += line_size - w;
184 }
185 275940 return s;
186 }
187
188 1144148 static inline int get_penalty_factor(int lambda, int lambda2, int type){
189
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1144148 switch(type&0xFF){
190 810540 default:
191 case FF_CMP_SAD:
192 810540 return lambda>>FF_LAMBDA_SHIFT;
193 case FF_CMP_DCT:
194 return (3*lambda)>>(FF_LAMBDA_SHIFT+1);
195 case FF_CMP_W53:
196 return (4*lambda)>>(FF_LAMBDA_SHIFT);
197 333608 case FF_CMP_W97:
198 333608 return (2*lambda)>>(FF_LAMBDA_SHIFT);
199 case FF_CMP_SATD:
200 case FF_CMP_DCT264:
201 return (2*lambda)>>FF_LAMBDA_SHIFT;
202 case FF_CMP_RD:
203 case FF_CMP_PSNR:
204 case FF_CMP_SSE:
205 case FF_CMP_NSSE:
206 return lambda2>>FF_LAMBDA_SHIFT;
207 case FF_CMP_BIT:
208 return 1;
209 }
210 }
211
212 //FIXME copy&paste
213 #define P_LEFT P[1]
214 #define P_TOP P[2]
215 #define P_TOPRIGHT P[3]
216 #define P_MEDIAN P[4]
217 #define P_MV1 P[9]
218 #define FLAG_QPEL 1 //must be 1
219
220 281880 static int encode_q_branch(SnowContext *s, int level, int x, int y){
221 uint8_t p_buffer[1024];
222 uint8_t i_buffer[1024];
223 uint8_t p_state[sizeof(s->block_state)];
224 uint8_t i_state[sizeof(s->block_state)];
225 RangeCoder pc, ic;
226 281880 uint8_t *pbbak= s->c.bytestream;
227 281880 uint8_t *pbbak_start= s->c.bytestream_start;
228 int score, score2, iscore, i_len, p_len, block_s, sum, base_bits;
229 281880 const int w= s->b_width << s->block_max_depth;
230 281880 const int h= s->b_height << s->block_max_depth;
231 281880 const int rem_depth= s->block_max_depth - level;
232 281880 const int index= (x + y*w) << rem_depth;
233 281880 const int block_w= 1<<(LOG2_MB_SIZE - level);
234 281880 int trx= (x+1)<<rem_depth;
235 281880 int try= (y+1)<<rem_depth;
236
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281880 const BlockNode *left = x ? &s->block[index-1] : &null_block;
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281880 const BlockNode *top = y ? &s->block[index-w] : &null_block;
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281880 const BlockNode *right = trx<w ? &s->block[index+1] : &null_block;
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281880 const BlockNode *bottom= try<h ? &s->block[index+w] : &null_block;
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281880 const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
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281880 const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
242 281880 int pl = left->color[0];
243 281880 int pcb= left->color[1];
244 281880 int pcr= left->color[2];
245 int pmx, pmy;
246 281880 int mx=0, my=0;
247 int l,cr,cb;
248 281880 const int stride= s->current_picture->linesize[0];
249 281880 const int uvstride= s->current_picture->linesize[1];
250 281880 const uint8_t *const current_data[3] = { s->input_picture->data[0] + (x + y* stride)*block_w,
251 281880 s->input_picture->data[1] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift),
252 281880 s->input_picture->data[2] + ((x*block_w)>>s->chroma_h_shift) + ((y*uvstride*block_w)>>s->chroma_v_shift)};
253 int P[10][2];
254 int16_t last_mv[3][2];
255 281880 int qpel= !!(s->avctx->flags & AV_CODEC_FLAG_QPEL); //unused
256 281880 const int shift= 1+qpel;
257 281880 MotionEstContext *c= &s->m.me;
258 281880 int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
259 281880 int mx_context= av_log2(2*FFABS(left->mx - top->mx));
260 281880 int my_context= av_log2(2*FFABS(left->my - top->my));
261 281880 int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
262 int ref, best_ref, ref_score, ref_mx, ref_my;
263
264 av_assert0(sizeof(s->block_state) >= 256);
265
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281880 if(s->keyframe){
266 5940 set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
267 5940 return 0;
268 }
269
270 // clip predictors / edge ?
271
272 275940 P_LEFT[0]= left->mx;
273 275940 P_LEFT[1]= left->my;
274 275940 P_TOP [0]= top->mx;
275 275940 P_TOP [1]= top->my;
276 275940 P_TOPRIGHT[0]= tr->mx;
277 275940 P_TOPRIGHT[1]= tr->my;
278
279 275940 last_mv[0][0]= s->block[index].mx;
280 275940 last_mv[0][1]= s->block[index].my;
281 275940 last_mv[1][0]= right->mx;
282 275940 last_mv[1][1]= right->my;
283 275940 last_mv[2][0]= bottom->mx;
284 275940 last_mv[2][1]= bottom->my;
285
286 275940 s->m.mb_stride=2;
287 275940 s->m.mb_x=
288 275940 s->m.mb_y= 0;
289 275940 c->skip= 0;
290
291 av_assert1(c-> stride == stride);
292 av_assert1(c->uvstride == uvstride);
293
294 275940 c->penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_cmp);
295 275940 c->sub_penalty_factor= get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_sub_cmp);
296 275940 c->mb_penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->mb_cmp);
297 275940 c->current_mv_penalty= c->mv_penalty[s->m.f_code=1] + MAX_DMV;
298
299 275940 c->xmin = - x*block_w - 16+3;
300 275940 c->ymin = - y*block_w - 16+3;
301 275940 c->xmax = - (x+1)*block_w + (w<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
302 275940 c->ymax = - (y+1)*block_w + (h<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3;
303
304
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275940 if(P_LEFT[0] > (c->xmax<<shift)) P_LEFT[0] = (c->xmax<<shift);
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275940 if(P_LEFT[1] > (c->ymax<<shift)) P_LEFT[1] = (c->ymax<<shift);
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275940 if(P_TOP[0] > (c->xmax<<shift)) P_TOP[0] = (c->xmax<<shift);
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275940 if(P_TOP[1] > (c->ymax<<shift)) P_TOP[1] = (c->ymax<<shift);
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275940 if(P_TOPRIGHT[0] < (c->xmin * (1<<shift))) P_TOPRIGHT[0]= (c->xmin * (1<<shift));
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275940 if(P_TOPRIGHT[0] > (c->xmax<<shift)) P_TOPRIGHT[0]= (c->xmax<<shift); //due to pmx no clip
310
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275940 if(P_TOPRIGHT[1] > (c->ymax<<shift)) P_TOPRIGHT[1]= (c->ymax<<shift);
311
312 275940 P_MEDIAN[0]= mid_pred(P_LEFT[0], P_TOP[0], P_TOPRIGHT[0]);
313 275940 P_MEDIAN[1]= mid_pred(P_LEFT[1], P_TOP[1], P_TOPRIGHT[1]);
314
315
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275940 if (!y) {
316 11070 c->pred_x= P_LEFT[0];
317 11070 c->pred_y= P_LEFT[1];
318 } else {
319 264870 c->pred_x = P_MEDIAN[0];
320 264870 c->pred_y = P_MEDIAN[1];
321 }
322
323 275940 score= INT_MAX;
324 275940 best_ref= 0;
325
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551880 for(ref=0; ref<s->ref_frames; ref++){
326 275940 init_ref(c, current_data, s->last_picture[ref]->data, NULL, block_w*x, block_w*y, 0);
327
328 275940 ref_score= ff_epzs_motion_search(&s->m, &ref_mx, &ref_my, P, 0, /*ref_index*/ 0, last_mv,
329 (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w);
330
331 av_assert2(ref_mx >= c->xmin);
332 av_assert2(ref_mx <= c->xmax);
333 av_assert2(ref_my >= c->ymin);
334 av_assert2(ref_my <= c->ymax);
335
336 275940 ref_score= c->sub_motion_search(&s->m, &ref_mx, &ref_my, ref_score, 0, 0, level-LOG2_MB_SIZE+4, block_w);
337 275940 ref_score= ff_get_mb_score(&s->m, ref_mx, ref_my, 0, 0, level-LOG2_MB_SIZE+4, block_w, 0);
338 275940 ref_score+= 2*av_log2(2*ref)*c->penalty_factor;
339
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275940 if(s->ref_mvs[ref]){
340 8640 s->ref_mvs[ref][index][0]= ref_mx;
341 8640 s->ref_mvs[ref][index][1]= ref_my;
342 8640 s->ref_scores[ref][index]= ref_score;
343 }
344
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275940 if(score > ref_score){
345 275940 score= ref_score;
346 275940 best_ref= ref;
347 275940 mx= ref_mx;
348 275940 my= ref_my;
349 }
350 }
351 //FIXME if mb_cmp != SSE then intra cannot be compared currently and mb_penalty vs. lambda2
352
353 // subpel search
354 275940 base_bits= get_rac_count(&s->c) - 8*(s->c.bytestream - s->c.bytestream_start);
355 275940 pc= s->c;
356 275940 pc.bytestream_start=
357 275940 pc.bytestream= p_buffer; //FIXME end/start? and at the other stoo
358 275940 memcpy(p_state, s->block_state, sizeof(s->block_state));
359
360
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275940 if(level!=s->block_max_depth)
361 53460 put_rac(&pc, &p_state[4 + s_context], 1);
362 275940 put_rac(&pc, &p_state[1 + left->type + top->type], 0);
363
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275940 if(s->ref_frames > 1)
364 put_symbol(&pc, &p_state[128 + 1024 + 32*ref_context], best_ref, 0);
365 275940 pred_mv(s, &pmx, &pmy, best_ref, left, top, tr);
366
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275940 put_symbol(&pc, &p_state[128 + 32*(mx_context + 16*!!best_ref)], mx - pmx, 1);
367
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275940 put_symbol(&pc, &p_state[128 + 32*(my_context + 16*!!best_ref)], my - pmy, 1);
368 275940 p_len= pc.bytestream - pc.bytestream_start;
369 275940 score += (s->lambda2*(get_rac_count(&pc)-base_bits))>>FF_LAMBDA_SHIFT;
370
371 275940 block_s= block_w*block_w;
372 275940 sum = pix_sum(current_data[0], stride, block_w, block_w);
373 275940 l= (sum + block_s/2)/block_s;
374 275940 iscore = pix_norm1(current_data[0], stride, block_w) - 2*l*sum + l*l*block_s;
375
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275940 if (s->nb_planes > 2) {
377 275940 block_s= block_w*block_w>>(s->chroma_h_shift + s->chroma_v_shift);
378 275940 sum = pix_sum(current_data[1], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
379 275940 cb= (sum + block_s/2)/block_s;
380 // iscore += pix_norm1(&current_mb[1][0], uvstride, block_w>>1) - 2*cb*sum + cb*cb*block_s;
381 275940 sum = pix_sum(current_data[2], uvstride, block_w>>s->chroma_h_shift, block_w>>s->chroma_v_shift);
382 275940 cr= (sum + block_s/2)/block_s;
383 // iscore += pix_norm1(&current_mb[2][0], uvstride, block_w>>1) - 2*cr*sum + cr*cr*block_s;
384 }else
385 cb = cr = 0;
386
387 275940 ic= s->c;
388 275940 ic.bytestream_start=
389 275940 ic.bytestream= i_buffer; //FIXME end/start? and at the other stoo
390 275940 memcpy(i_state, s->block_state, sizeof(s->block_state));
391
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275940 if(level!=s->block_max_depth)
392 53460 put_rac(&ic, &i_state[4 + s_context], 1);
393 275940 put_rac(&ic, &i_state[1 + left->type + top->type], 1);
394 275940 put_symbol(&ic, &i_state[32], l-pl , 1);
395
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275940 if (s->nb_planes > 2) {
396 275940 put_symbol(&ic, &i_state[64], cb-pcb, 1);
397 275940 put_symbol(&ic, &i_state[96], cr-pcr, 1);
398 }
399 275940 i_len= ic.bytestream - ic.bytestream_start;
400 275940 iscore += (s->lambda2*(get_rac_count(&ic)-base_bits))>>FF_LAMBDA_SHIFT;
401
402 av_assert1(iscore < 255*255*256 + s->lambda2*10);
403 av_assert1(iscore >= 0);
404 av_assert1(l>=0 && l<=255);
405 av_assert1(pl>=0 && pl<=255);
406
407
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275940 if(level==0){
408 62100 int varc= iscore >> 8;
409 62100 int vard= score >> 8;
410
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62100 if (vard <= 64 || vard < varc)
411 62100 c->scene_change_score+= ff_sqrt(vard) - ff_sqrt(varc);
412 else
413 c->scene_change_score+= s->m.qscale;
414 }
415
416
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275940 if(level!=s->block_max_depth){
417 53460 put_rac(&s->c, &s->block_state[4 + s_context], 0);
418 53460 score2 = encode_q_branch(s, level+1, 2*x+0, 2*y+0);
419 53460 score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+0);
420 53460 score2+= encode_q_branch(s, level+1, 2*x+0, 2*y+1);
421 53460 score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+1);
422 53460 score2+= s->lambda2>>FF_LAMBDA_SHIFT; //FIXME exact split overhead
423
424
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53460 if(score2 < score && score2 < iscore)
425 45013 return score2;
426 }
427
428
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230927 if(iscore < score){
429 5 pred_mv(s, &pmx, &pmy, 0, left, top, tr);
430 5 memcpy(pbbak, i_buffer, i_len);
431 5 s->c= ic;
432 5 s->c.bytestream_start= pbbak_start;
433 5 s->c.bytestream= pbbak + i_len;
434 5 set_blocks(s, level, x, y, l, cb, cr, pmx, pmy, 0, BLOCK_INTRA);
435 5 memcpy(s->block_state, i_state, sizeof(s->block_state));
436 5 return iscore;
437 }else{
438 230922 memcpy(pbbak, p_buffer, p_len);
439 230922 s->c= pc;
440 230922 s->c.bytestream_start= pbbak_start;
441 230922 s->c.bytestream= pbbak + p_len;
442 230922 set_blocks(s, level, x, y, pl, pcb, pcr, mx, my, best_ref, 0);
443 230922 memcpy(s->block_state, p_state, sizeof(s->block_state));
444 230922 return score;
445 }
446 }
447
448 9600 static void encode_q_branch2(SnowContext *s, int level, int x, int y){
449 9600 const int w= s->b_width << s->block_max_depth;
450 9600 const int rem_depth= s->block_max_depth - level;
451 9600 const int index= (x + y*w) << rem_depth;
452 9600 int trx= (x+1)<<rem_depth;
453 9600 BlockNode *b= &s->block[index];
454
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9600 const BlockNode *left = x ? &s->block[index-1] : &null_block;
455
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9600 const BlockNode *top = y ? &s->block[index-w] : &null_block;
456
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9600 const BlockNode *tl = y && x ? &s->block[index-w-1] : left;
457
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9600 const BlockNode *tr = y && trx<w && ((x&1)==0 || level==0) ? &s->block[index-w+(1<<rem_depth)] : tl; //FIXME use lt
458 9600 int pl = left->color[0];
459 9600 int pcb= left->color[1];
460 9600 int pcr= left->color[2];
461 int pmx, pmy;
462 9600 int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref);
463
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9600 int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 16*!!b->ref;
464
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9600 int my_context= av_log2(2*FFABS(left->my - top->my)) + 16*!!b->ref;
465 9600 int s_context= 2*left->level + 2*top->level + tl->level + tr->level;
466
467
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9600 if(s->keyframe){
468 960 set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA);
469 960 return;
470 }
471
472
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8640 if(level!=s->block_max_depth){
473 if(same_block(b,b+1) && same_block(b,b+w) && same_block(b,b+w+1)){
474 put_rac(&s->c, &s->block_state[4 + s_context], 1);
475 }else{
476 put_rac(&s->c, &s->block_state[4 + s_context], 0);
477 encode_q_branch2(s, level+1, 2*x+0, 2*y+0);
478 encode_q_branch2(s, level+1, 2*x+1, 2*y+0);
479 encode_q_branch2(s, level+1, 2*x+0, 2*y+1);
480 encode_q_branch2(s, level+1, 2*x+1, 2*y+1);
481 return;
482 }
483 }
484
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8640 if(b->type & BLOCK_INTRA){
485 40 pred_mv(s, &pmx, &pmy, 0, left, top, tr);
486 40 put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 1);
487 40 put_symbol(&s->c, &s->block_state[32], b->color[0]-pl , 1);
488
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40 if (s->nb_planes > 2) {
489 40 put_symbol(&s->c, &s->block_state[64], b->color[1]-pcb, 1);
490 40 put_symbol(&s->c, &s->block_state[96], b->color[2]-pcr, 1);
491 }
492 40 set_blocks(s, level, x, y, b->color[0], b->color[1], b->color[2], pmx, pmy, 0, BLOCK_INTRA);
493 }else{
494 8600 pred_mv(s, &pmx, &pmy, b->ref, left, top, tr);
495 8600 put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 0);
496
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8600 if(s->ref_frames > 1)
497 put_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], b->ref, 0);
498 8600 put_symbol(&s->c, &s->block_state[128 + 32*mx_context], b->mx - pmx, 1);
499 8600 put_symbol(&s->c, &s->block_state[128 + 32*my_context], b->my - pmy, 1);
500 8600 set_blocks(s, level, x, y, pl, pcb, pcr, b->mx, b->my, b->ref, 0);
501 }
502 }
503
504 56355 static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){
505 int i, x2, y2;
506 56355 Plane *p= &s->plane[plane_index];
507 56355 const int block_size = MB_SIZE >> s->block_max_depth;
508
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56355 const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
509
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56355 const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
510
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56355 const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
511
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56355 const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
512 56355 const int ref_stride= s->current_picture->linesize[plane_index];
513 56355 const uint8_t *src = s->input_picture->data[plane_index];
514 56355 IDWTELEM *dst= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4; //FIXME change to unsigned
515 56355 const int b_stride = s->b_width << s->block_max_depth;
516 56355 const int w= p->width;
517 56355 const int h= p->height;
518 56355 int index= mb_x + mb_y*b_stride;
519 56355 BlockNode *b= &s->block[index];
520 56355 BlockNode backup= *b;
521 56355 int ab=0;
522 56355 int aa=0;
523
524 av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc stuff above
525
526 56355 b->type|= BLOCK_INTRA;
527 56355 b->color[plane_index]= 0;
528 56355 memset(dst, 0, obmc_stride*obmc_stride*sizeof(IDWTELEM));
529
530
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281775 for(i=0; i<4; i++){
531 225420 int mb_x2= mb_x + (i &1) - 1;
532 225420 int mb_y2= mb_y + (i>>1) - 1;
533 225420 int x= block_w*mb_x2 + block_w/2;
534 225420 int y= block_h*mb_y2 + block_h/2;
535
536 225420 add_yblock(s, 0, NULL, dst + (i&1)*block_w + (i>>1)*obmc_stride*block_h, NULL, obmc,
537 x, y, block_w, block_h, w, h, obmc_stride, ref_stride, obmc_stride, mb_x2, mb_y2, 0, 0, plane_index);
538
539
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2352140 for(y2= FFMAX(y, 0); y2<FFMIN(h, y+block_h); y2++){
540
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26255072 for(x2= FFMAX(x, 0); x2<FFMIN(w, x+block_w); x2++){
541 24128352 int index= x2-(block_w*mb_x - block_w/2) + (y2-(block_h*mb_y - block_h/2))*obmc_stride;
542 24128352 int obmc_v= obmc[index];
543 int d;
544
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24128352 if(y<0) obmc_v += obmc[index + block_h*obmc_stride];
545
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24128352 if(x<0) obmc_v += obmc[index + block_w];
546
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24128352 if(y+block_h>h) obmc_v += obmc[index - block_h*obmc_stride];
547
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24128352 if(x+block_w>w) obmc_v += obmc[index - block_w];
548 //FIXME precalculate this or simplify it somehow else
549
550 24128352 d = -dst[index] + (1<<(FRAC_BITS-1));
551 24128352 dst[index] = d;
552 24128352 ab += (src[x2 + y2*ref_stride] - (d>>FRAC_BITS)) * obmc_v;
553 24128352 aa += obmc_v * obmc_v; //FIXME precalculate this
554 }
555 }
556 }
557 56355 *b= backup;
558
559
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56355 return av_clip_uint8( ROUNDED_DIV(ab<<LOG2_OBMC_MAX, aa) ); //FIXME we should not need clipping
560 }
561
562 1304392 static inline int get_block_bits(SnowContext *s, int x, int y, int w){
563 1304392 const int b_stride = s->b_width << s->block_max_depth;
564 1304392 const int b_height = s->b_height<< s->block_max_depth;
565 1304392 int index= x + y*b_stride;
566 1304392 const BlockNode *b = &s->block[index];
567
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1304392 const BlockNode *left = x ? &s->block[index-1] : &null_block;
568
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1304392 const BlockNode *top = y ? &s->block[index-b_stride] : &null_block;
569
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1304392 const BlockNode *tl = y && x ? &s->block[index-b_stride-1] : left;
570
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1304392 const BlockNode *tr = y && x+w<b_stride ? &s->block[index-b_stride+w] : tl;
571 int dmx, dmy;
572 // int mx_context= av_log2(2*FFABS(left->mx - top->mx));
573 // int my_context= av_log2(2*FFABS(left->my - top->my));
574
575
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1304392 if(x<0 || x>=b_stride || y>=b_height)
576 197515 return 0;
577 /*
578 1 0 0
579 01X 1-2 1
580 001XX 3-6 2-3
581 0001XXX 7-14 4-7
582 00001XXXX 15-30 8-15
583 */
584 //FIXME try accurate rate
585 //FIXME intra and inter predictors if surrounding blocks are not the same type
586
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1106877 if(b->type & BLOCK_INTRA){
587 23255 return 3+2*( av_log2(2*FFABS(left->color[0] - b->color[0]))
588 23255 + av_log2(2*FFABS(left->color[1] - b->color[1]))
589 23255 + av_log2(2*FFABS(left->color[2] - b->color[2])));
590 }else{
591 1083622 pred_mv(s, &dmx, &dmy, b->ref, left, top, tr);
592 1083622 dmx-= b->mx;
593 1083622 dmy-= b->my;
594 1083622 return 2*(1 + av_log2(2*FFABS(dmx)) //FIXME kill the 2* can be merged in lambda
595 1083622 + av_log2(2*FFABS(dmy))
596 1083622 + av_log2(2*b->ref));
597 }
598 }
599
600 316328 static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, uint8_t (*obmc_edged)[MB_SIZE * 2]){
601 316328 Plane *p= &s->plane[plane_index];
602 316328 const int block_size = MB_SIZE >> s->block_max_depth;
603
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316328 const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
604
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316328 const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
605
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316328 const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
606 316328 const int ref_stride= s->current_picture->linesize[plane_index];
607 316328 uint8_t *dst= s->current_picture->data[plane_index];
608 316328 const uint8_t *src = s->input_picture->data[plane_index];
609 316328 IDWTELEM *pred= (IDWTELEM*)s->m.sc.obmc_scratchpad + plane_index*block_size*block_size*4;
610 316328 uint8_t *cur = s->scratchbuf;
611 316328 uint8_t *tmp = s->emu_edge_buffer;
612 316328 const int b_stride = s->b_width << s->block_max_depth;
613 316328 const int b_height = s->b_height<< s->block_max_depth;
614 316328 const int w= p->width;
615 316328 const int h= p->height;
616 int distortion;
617 316328 int rate= 0;
618 316328 const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
619 316328 int sx= block_w*mb_x - block_w/2;
620 316328 int sy= block_h*mb_y - block_h/2;
621
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316328 int x0= FFMAX(0,-sx);
622
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316328 int y0= FFMAX(0,-sy);
623 316328 int x1= FFMIN(block_w*2, w-sx);
624 316328 int y1= FFMIN(block_h*2, h-sy);
625 int i,x,y;
626
627 av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below chckinhg only block_w
628
629 316328 ff_snow_pred_block(s, cur, tmp, ref_stride, sx, sy, block_w*2, block_h*2, &s->block[mb_x + mb_y*b_stride], plane_index, w, h);
630
631
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9270952 for(y=y0; y<y1; y++){
632 8954624 const uint8_t *obmc1= obmc_edged[y];
633 8954624 const IDWTELEM *pred1 = pred + y*obmc_stride;
634 8954624 uint8_t *cur1 = cur + y*ref_stride;
635 8954624 uint8_t *dst1 = dst + sx + (sy+y)*ref_stride;
636
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279555200 for(x=x0; x<x1; x++){
637 #if FRAC_BITS >= LOG2_OBMC_MAX
638 int v = (cur1[x] * obmc1[x]) << (FRAC_BITS - LOG2_OBMC_MAX);
639 #else
640 270600576 int v = (cur1[x] * obmc1[x] + (1<<(LOG2_OBMC_MAX - FRAC_BITS-1))) >> (LOG2_OBMC_MAX - FRAC_BITS);
641 #endif
642 270600576 v = (v + pred1[x]) >> FRAC_BITS;
643
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270600576 if(v&(~255)) v= ~(v>>31);
644 270600576 dst1[x] = v;
645 }
646 }
647
648 /* copy the regions where obmc[] = (uint8_t)256 */
649
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316328 if(LOG2_OBMC_MAX == 8
650
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277774 && (mb_x == 0 || mb_x == b_stride-1)
651
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70256 && (mb_y == 0 || mb_y == b_height-1)){
652
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31846 if(mb_x == 0)
653 17372 x1 = block_w;
654 else
655 14474 x0 = block_w;
656
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31846 if(mb_y == 0)
657 18284 y1 = block_h;
658 else
659 13562 y0 = block_h;
660
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286614 for(y=y0; y<y1; y++)
661 254768 memcpy(dst + sx+x0 + (sy+y)*ref_stride, cur + x0 + y*ref_stride, x1-x0);
662 }
663
664
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316328 if(block_w==16){
665 /* FIXME rearrange dsputil to fit 32x32 cmp functions */
666 /* FIXME check alignment of the cmp wavelet vs the encoding wavelet */
667 /* FIXME cmps overlap but do not cover the wavelet's whole support.
668 * So improving the score of one block is not strictly guaranteed
669 * to improve the score of the whole frame, thus iterative motion
670 * estimation does not always converge. */
671
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316328 if(s->avctx->me_cmp == FF_CMP_W97)
672 316328 distortion = ff_w97_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
673 else if(s->avctx->me_cmp == FF_CMP_W53)
674 distortion = ff_w53_32_c(&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, 32);
675 else{
676 distortion = 0;
677 for(i=0; i<4; i++){
678 int off = sx+16*(i&1) + (sy+16*(i>>1))*ref_stride;
679 distortion += s->mecc.me_cmp[0](&s->m, src + off, dst + off, ref_stride, 16);
680 }
681 }
682 }else{
683 av_assert2(block_w==8);
684 distortion = s->mecc.me_cmp[0](&s->m, src + sx + sy*ref_stride, dst + sx + sy*ref_stride, ref_stride, block_w*2);
685 }
686
687
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316328 if(plane_index==0){
688
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1581640 for(i=0; i<4; i++){
689 /* ..RRr
690 * .RXx.
691 * rxx..
692 */
693 1265312 rate += get_block_bits(s, mb_x + (i&1) - (i>>1), mb_y + (i>>1), 1);
694 }
695
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316328 if(mb_x == b_stride-2)
696 39080 rate += get_block_bits(s, mb_x + 1, mb_y + 1, 1);
697 }
698 316328 return distortion + rate*penalty_factor;
699 }
700
701 static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index){
702 int i, y2;
703 Plane *p= &s->plane[plane_index];
704 const int block_size = MB_SIZE >> s->block_max_depth;
705 const int block_w = plane_index ? block_size>>s->chroma_h_shift : block_size;
706 const int block_h = plane_index ? block_size>>s->chroma_v_shift : block_size;
707 const uint8_t *obmc = plane_index ? ff_obmc_tab[s->block_max_depth+s->chroma_h_shift] : ff_obmc_tab[s->block_max_depth];
708 const int obmc_stride= plane_index ? (2*block_size)>>s->chroma_h_shift : 2*block_size;
709 const int ref_stride= s->current_picture->linesize[plane_index];
710 uint8_t *dst= s->current_picture->data[plane_index];
711 const uint8_t *src = s->input_picture->data[plane_index];
712 //FIXME zero_dst is const but add_yblock changes dst if add is 0 (this is never the case for dst=zero_dst
713 // const has only been removed from zero_dst to suppress a warning
714 static IDWTELEM zero_dst[4096]; //FIXME
715 const int b_stride = s->b_width << s->block_max_depth;
716 const int w= p->width;
717 const int h= p->height;
718 int distortion= 0;
719 int rate= 0;
720 const int penalty_factor= get_penalty_factor(s->lambda, s->lambda2, s->avctx->me_cmp);
721
722 av_assert2(s->chroma_h_shift == s->chroma_v_shift); //obmc and square assumtions below
723
724 for(i=0; i<9; i++){
725 int mb_x2= mb_x + (i%3) - 1;
726 int mb_y2= mb_y + (i/3) - 1;
727 int x= block_w*mb_x2 + block_w/2;
728 int y= block_h*mb_y2 + block_h/2;
729
730 add_yblock(s, 0, NULL, zero_dst, dst, obmc,
731 x, y, block_w, block_h, w, h, /*dst_stride*/0, ref_stride, obmc_stride, mb_x2, mb_y2, 1, 1, plane_index);
732
733 //FIXME find a cleaner/simpler way to skip the outside stuff
734 for(y2= y; y2<0; y2++)
735 memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
736 for(y2= h; y2<y+block_h; y2++)
737 memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, block_w);
738 if(x<0){
739 for(y2= y; y2<y+block_h; y2++)
740 memcpy(dst + x + y2*ref_stride, src + x + y2*ref_stride, -x);
741 }
742 if(x+block_w > w){
743 for(y2= y; y2<y+block_h; y2++)
744 memcpy(dst + w + y2*ref_stride, src + w + y2*ref_stride, x+block_w - w);
745 }
746
747 av_assert1(block_w== 8 || block_w==16);
748 distortion += s->mecc.me_cmp[block_w==8](&s->m, src + x + y*ref_stride, dst + x + y*ref_stride, ref_stride, block_h);
749 }
750
751 if(plane_index==0){
752 BlockNode *b= &s->block[mb_x+mb_y*b_stride];
753 int merged= same_block(b,b+1) && same_block(b,b+b_stride) && same_block(b,b+b_stride+1);
754
755 /* ..RRRr
756 * .RXXx.
757 * .RXXx.
758 * rxxx.
759 */
760 if(merged)
761 rate = get_block_bits(s, mb_x, mb_y, 2);
762 for(i=merged?4:0; i<9; i++){
763 static const int dxy[9][2] = {{0,0},{1,0},{0,1},{1,1},{2,0},{2,1},{-1,2},{0,2},{1,2}};
764 rate += get_block_bits(s, mb_x + dxy[i][0], mb_y + dxy[i][1], 1);
765 }
766 }
767 return distortion + rate*penalty_factor;
768 }
769
770 21600 static int encode_subband_c0run(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
771 21600 const int w= b->width;
772 21600 const int h= b->height;
773 int x, y;
774
775 if(1){
776 21600 int run=0;
777 21600 int *runs = s->run_buffer;
778 21600 int run_index=0;
779 int max_index;
780
781
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782
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26862600 for(x=0; x<w; x++){
783 26496000 int v, p=0;
784 26496000 int /*ll=0, */l=0, lt=0, t=0, rt=0;
785 26496000 v= src[x + y*stride];
786
787
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26496000 if(y){
788 25960200 t= src[x + (y-1)*stride];
789
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25960200 if(x){
790 25615200 lt= src[x - 1 + (y-1)*stride];
791 }
792
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25960200 if(x + 1 < w){
793 25615200 rt= src[x + 1 + (y-1)*stride];
794 }
795 }
796
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26496000 if(x){
797 26129400 l= src[x - 1 + y*stride];
798 /*if(x > 1){
799 if(orientation==1) ll= src[y + (x-2)*stride];
800 else ll= src[x - 2 + y*stride];
801 }*/
802 }
803
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26496000 if(parent){
804 26392500 int px= x>>1;
805 26392500 int py= y>>1;
806
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26392500 if(px<b->parent->width && py<b->parent->height)
807 26380800 p= parent[px + py*2*stride];
808 }
809
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26496000 if(!(/*ll|*/l|lt|t|rt|p)){
810
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2820927 if(v){
811 291329 runs[run_index++]= run;
812 291329 run=0;
813 }else{
814 2529598 run++;
815 }
816 }
817 }
818 }
819 21600 max_index= run_index;
820 21600 runs[run_index++]= run;
821 21600 run_index=0;
822 21600 run= runs[run_index++];
823
824 21600 put_symbol2(&s->c, b->state[30], max_index, 0);
825
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21600 if(run_index <= max_index)
826 16916 put_symbol2(&s->c, b->state[1], run, 3);
827
828
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829
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366600 if(s->c.bytestream_end - s->c.bytestream < w*40){
830 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
831 return AVERROR(ENOMEM);
832 }
833
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26862600 for(x=0; x<w; x++){
834 26496000 int v, p=0;
835 26496000 int /*ll=0, */l=0, lt=0, t=0, rt=0;
836 26496000 v= src[x + y*stride];
837
838
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26496000 if(y){
839 25960200 t= src[x + (y-1)*stride];
840
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25960200 if(x){
841 25615200 lt= src[x - 1 + (y-1)*stride];
842 }
843
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25960200 if(x + 1 < w){
844 25615200 rt= src[x + 1 + (y-1)*stride];
845 }
846 }
847
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26496000 if(x){
848 26129400 l= src[x - 1 + y*stride];
849 /*if(x > 1){
850 if(orientation==1) ll= src[y + (x-2)*stride];
851 else ll= src[x - 2 + y*stride];
852 }*/
853 }
854
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26496000 if(parent){
855 26392500 int px= x>>1;
856 26392500 int py= y>>1;
857
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26392500 if(px<b->parent->width && py<b->parent->height)
858 26380800 p= parent[px + py*2*stride];
859 }
860
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26496000 if(/*ll|*/l|lt|t|rt|p){
861 23675073 int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
862
863 23675073 put_rac(&s->c, &b->state[0][context], !!v);
864 }else{
865
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2820927 if(!run){
866 291329 run= runs[run_index++];
867
868
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291329 if(run_index <= max_index)
869 274413 put_symbol2(&s->c, b->state[1], run, 3);
870 av_assert2(v);
871 }else{
872 2529598 run--;
873 av_assert2(!v);
874 }
875 }
876
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26496000 if(v){
877 15993468 int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p));
878 15993468 int l2= 2*FFABS(l) + (l<0);
879 15993468 int t2= 2*FFABS(t) + (t<0);
880
881 15993468 put_symbol2(&s->c, b->state[context + 2], FFABS(v)-1, context-4);
882 15993468 put_rac(&s->c, &b->state[0][16 + 1 + 3 + ff_quant3bA[l2&0xFF] + 3*ff_quant3bA[t2&0xFF]], v<0);
883 }
884 }
885 }
886 }
887 21600 return 0;
888 }
889
890 21600 static int encode_subband(SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation){
891 // encode_subband_qtree(s, b, src, parent, stride, orientation);
892 // encode_subband_z0run(s, b, src, parent, stride, orientation);
893 21600 return encode_subband_c0run(s, b, src, parent, stride, orientation);
894 // encode_subband_dzr(s, b, src, parent, stride, orientation);
895 }
896
897 18870 static av_always_inline int check_block_intra(SnowContext *s, int mb_x, int mb_y, int p[3],
898 uint8_t (*obmc_edged)[MB_SIZE * 2], int *best_rd)
899 {
900 18870 const int b_stride= s->b_width << s->block_max_depth;
901 18870 BlockNode *block= &s->block[mb_x + mb_y * b_stride];
902 18870 BlockNode backup= *block;
903 int rd;
904
905 av_assert2(mb_x>=0 && mb_y>=0);
906 av_assert2(mb_x<b_stride);
907
908 18870 block->color[0] = p[0];
909 18870 block->color[1] = p[1];
910 18870 block->color[2] = p[2];
911 18870 block->type |= BLOCK_INTRA;
912
913 18870 rd = get_block_rd(s, mb_x, mb_y, 0, obmc_edged) + s->intra_penalty;
914
915 //FIXME chroma
916
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18870 if(rd < *best_rd){
917 146 *best_rd= rd;
918 146 return 1;
919 }else{
920 18724 *block= backup;
921 18724 return 0;
922 }
923 }
924
925 /* special case for int[2] args we discard afterwards,
926 * fixes compilation problem with gcc 2.95 */
927 416398 static av_always_inline int check_block_inter(SnowContext *s, int mb_x, int mb_y, int p0, int p1, uint8_t (*obmc_edged)[MB_SIZE * 2], int *best_rd){
928 416398 const int b_stride = s->b_width << s->block_max_depth;
929 416398 BlockNode *block = &s->block[mb_x + mb_y * b_stride];
930 416398 BlockNode backup = *block;
931 unsigned value;
932 int rd, index;
933
934 av_assert2(mb_x >= 0 && mb_y >= 0);
935 av_assert2(mb_x < b_stride);
936
937 416398 index = (p0 + 31 * p1) & (ME_CACHE_SIZE-1);
938 416398 value = s->me_cache_generation + (p0 >> 10) + p1 * (1 << 6) + (block->ref << 12);
939
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416398 if (s->me_cache[index] == value)
940 118940 return 0;
941 297458 s->me_cache[index] = value;
942
943 297458 block->mx = p0;
944 297458 block->my = p1;
945 297458 block->type &= ~BLOCK_INTRA;
946
947 297458 rd = get_block_rd(s, mb_x, mb_y, 0, obmc_edged);
948
949 //FIXME chroma
950
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297458 if (rd < *best_rd) {
951 65265 *best_rd = rd;
952 65265 return 1;
953 } else {
954 232193 *block = backup;
955 232193 return 0;
956 }
957 }
958
959 static av_always_inline int check_4block_inter(SnowContext *s, int mb_x, int mb_y, int p0, int p1, int ref, int *best_rd){
960 const int b_stride= s->b_width << s->block_max_depth;
961 BlockNode *block= &s->block[mb_x + mb_y * b_stride];
962 BlockNode backup[4];
963 unsigned value;
964 int rd, index;
965
966 /* We don't initialize backup[] during variable declaration, because
967 * that fails to compile on MSVC: "cannot convert from 'BlockNode' to
968 * 'int16_t'". */
969 backup[0] = block[0];
970 backup[1] = block[1];
971 backup[2] = block[b_stride];
972 backup[3] = block[b_stride + 1];
973
974 av_assert2(mb_x>=0 && mb_y>=0);
975 av_assert2(mb_x<b_stride);
976 av_assert2(((mb_x|mb_y)&1) == 0);
977
978 index= (p0 + 31*p1) & (ME_CACHE_SIZE-1);
979 value= s->me_cache_generation + (p0>>10) + (p1<<6) + (block->ref<<12);
980 if(s->me_cache[index] == value)
981 return 0;
982 s->me_cache[index]= value;
983
984 block->mx= p0;
985 block->my= p1;
986 block->ref= ref;
987 block->type &= ~BLOCK_INTRA;
988 block[1]= block[b_stride]= block[b_stride+1]= *block;
989
990 rd= get_4block_rd(s, mb_x, mb_y, 0);
991
992 //FIXME chroma
993 if(rd < *best_rd){
994 *best_rd= rd;
995 return 1;
996 }else{
997 block[0]= backup[0];
998 block[1]= backup[1];
999 block[b_stride]= backup[2];
1000 block[b_stride+1]= backup[3];
1001 return 0;
1002 }
1003 }
1004
1005 270 static void iterative_me(SnowContext *s){
1006 int pass, mb_x, mb_y;
1007 270 const int b_width = s->b_width << s->block_max_depth;
1008 270 const int b_height= s->b_height << s->block_max_depth;
1009 270 const int b_stride= b_width;
1010 int color[3];
1011
1012 {
1013 270 RangeCoder r = s->c;
1014 uint8_t state[sizeof(s->block_state)];
1015 270 memcpy(state, s->block_state, sizeof(s->block_state));
1016
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1350 for(mb_y= 0; mb_y<s->b_height; mb_y++)
1017
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9720 for(mb_x= 0; mb_x<s->b_width; mb_x++)
1018 8640 encode_q_branch(s, 0, mb_x, mb_y);
1019 270 s->c = r;
1020 270 memcpy(s->block_state, state, sizeof(s->block_state));
1021 }
1022
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964 for(pass=0; pass<25; pass++){
1024 964 int change= 0;
1025
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4820 for(mb_y= 0; mb_y<b_height; mb_y++){
1027
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34704 for(mb_x= 0; mb_x<b_width; mb_x++){
1028 int dia_change, i, j, ref;
1029 30848 int best_rd= INT_MAX, ref_rd;
1030 BlockNode backup, ref_b;
1031 30848 const int index= mb_x + mb_y * b_stride;
1032 30848 BlockNode *block= &s->block[index];
1033
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30848 BlockNode *tb = mb_y ? &s->block[index-b_stride ] : NULL;
1034
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30848 BlockNode *lb = mb_x ? &s->block[index -1] : NULL;
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30848 BlockNode *rb = mb_x+1<b_width ? &s->block[index +1] : NULL;
1036
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30848 BlockNode *bb = mb_y+1<b_height ? &s->block[index+b_stride ] : NULL;
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30848 BlockNode *tlb= mb_x && mb_y ? &s->block[index-b_stride-1] : NULL;
1038
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30848 BlockNode *trb= mb_x+1<b_width && mb_y ? &s->block[index-b_stride+1] : NULL;
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30848 BlockNode *blb= mb_x && mb_y+1<b_height ? &s->block[index+b_stride-1] : NULL;
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30848 BlockNode *brb= mb_x+1<b_width && mb_y+1<b_height ? &s->block[index+b_stride+1] : NULL;
1041 30848 const int b_w= (MB_SIZE >> s->block_max_depth);
1042 uint8_t obmc_edged[MB_SIZE * 2][MB_SIZE * 2];
1043
1044
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30848 if(pass && (block->type & BLOCK_OPT))
1045 12063 continue;
1046 18785 block->type |= BLOCK_OPT;
1047
1048 18785 backup= *block;
1049
1050
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18785 if(!s->me_cache_generation)
1051 21 memset(s->me_cache, 0, sizeof(s->me_cache));
1052 18785 s->me_cache_generation += 1<<22;
1053
1054 //FIXME precalculate
1055 {
1056 int x, y;
1057
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619905 for (y = 0; y < b_w * 2; y++)
1058 601120 memcpy(obmc_edged[y], ff_obmc_tab[s->block_max_depth] + y * b_w * 2, b_w * 2);
1059
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18785 if(mb_x==0)
1060
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73953 for(y=0; y<b_w*2; y++)
1061 71712 memset(obmc_edged[y], obmc_edged[y][0] + obmc_edged[y][b_w-1], b_w);
1062
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18785 if(mb_x==b_stride-1)
1063
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60951 for(y=0; y<b_w*2; y++)
1064 59104 memset(obmc_edged[y]+b_w, obmc_edged[y][b_w] + obmc_edged[y][b_w*2-1], b_w);
1065
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18785 if(mb_y==0){
1066
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164670 for(x=0; x<b_w*2; x++)
1067 159680 obmc_edged[0][x] += obmc_edged[b_w-1][x];
1068
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79840 for(y=1; y<b_w; y++)
1069 74850 memcpy(obmc_edged[y], obmc_edged[0], b_w*2);
1070 }
1071
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18785 if(mb_y==b_height-1){
1072
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121770 for(x=0; x<b_w*2; x++)
1073 118080 obmc_edged[b_w*2-1][x] += obmc_edged[b_w][x];
1074
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59040 for(y=b_w; y<b_w*2-1; y++)
1075 55350 memcpy(obmc_edged[y], obmc_edged[b_w*2-1], b_w*2);
1076 }
1077 }
1078
1079 //skip stuff outside the picture
1080
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18785 if(mb_x==0 || mb_y==0 || mb_x==b_width-1 || mb_y==b_height-1){
1081 10919 const uint8_t *src = s->input_picture->data[0];
1082 10919 uint8_t *dst= s->current_picture->data[0];
1083 10919 const int stride= s->current_picture->linesize[0];
1084 10919 const int block_w= MB_SIZE >> s->block_max_depth;
1085 10919 const int block_h= MB_SIZE >> s->block_max_depth;
1086 10919 const int sx= block_w*mb_x - block_w/2;
1087 10919 const int sy= block_h*mb_y - block_h/2;
1088 10919 const int w= s->plane[0].width;
1089 10919 const int h= s->plane[0].height;
1090 int y;
1091
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50839 for(y=sy; y<0; y++)
1093 39920 memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
1094
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40439 for(y=h; y<sy+block_h*2; y++)
1095 29520 memcpy(dst + sx + y*stride, src + sx + y*stride, block_w*2);
1096
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10919 if(sx<0){
1097
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73953 for(y=sy; y<sy+block_h*2; y++)
1098 71712 memcpy(dst + sx + y*stride, src + sx + y*stride, -sx);
1099 }
1100
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10919 if(sx+block_w*2 > w){
1101
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60951 for(y=sy; y<sy+block_h*2; y++)
1102 59104 memcpy(dst + w + y*stride, src + w + y*stride, sx+block_w*2 - w);
1103 }
1104 }
1105
1106 // intra(black) = neighbors' contribution to the current block
1107
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75140 for(i=0; i < s->nb_planes; i++)
1108 56355 color[i]= get_dc(s, mb_x, mb_y, i);
1109
1110 // get previous score (cannot be cached due to OBMC)
1111
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18870 if(pass > 0 && (block->type&BLOCK_INTRA)){
1112 85 int color0[3]= {block->color[0], block->color[1], block->color[2]};
1113 85 check_block_intra(s, mb_x, mb_y, color0, obmc_edged, &best_rd);
1114 }else
1115 18700 check_block_inter(s, mb_x, mb_y, block->mx, block->my, obmc_edged, &best_rd);
1116
1117 18785 ref_b= *block;
1118 18785 ref_rd= best_rd;
1119
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37570 for(ref=0; ref < s->ref_frames; ref++){
1120 18785 int16_t (*mvr)[2]= &s->ref_mvs[ref][index];
1121
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18785 if(s->ref_scores[ref][index] > s->ref_scores[ref_b.ref][index]*3/2) //FIXME tune threshold
1122 continue;
1123 18785 block->ref= ref;
1124 18785 best_rd= INT_MAX;
1125
1126 18785 check_block_inter(s, mb_x, mb_y, mvr[0][0], mvr[0][1], obmc_edged, &best_rd);
1127 18785 check_block_inter(s, mb_x, mb_y, 0, 0, obmc_edged, &best_rd);
1128
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18785 if(tb)
1129 13795 check_block_inter(s, mb_x, mb_y, mvr[-b_stride][0], mvr[-b_stride][1], obmc_edged, &best_rd);
1130
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18785 if(lb)
1131 16544 check_block_inter(s, mb_x, mb_y, mvr[-1][0], mvr[-1][1], obmc_edged, &best_rd);
1132
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18785 if(rb)
1133 16938 check_block_inter(s, mb_x, mb_y, mvr[1][0], mvr[1][1], obmc_edged, &best_rd);
1134
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18785 if(bb)
1135 15095 check_block_inter(s, mb_x, mb_y, mvr[b_stride][0], mvr[b_stride][1], obmc_edged, &best_rd);
1136
1137 /* fullpel ME */
1138 //FIXME avoid subpel interpolation / round to nearest integer
1139 do{
1140 19209 int newx = block->mx;
1141 19209 int newy = block->my;
1142
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19209 int dia_size = s->iterative_dia_size ? s->iterative_dia_size : FFMAX(s->avctx->dia_size, 1);
1143 19209 dia_change=0;
1144
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57627 for(i=0; i < dia_size; i++){
1145
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57627 for(j=0; j<i; j++){
1146 19209 dia_change |= check_block_inter(s, mb_x, mb_y, newx+4*(i-j), newy+(4*j), obmc_edged, &best_rd);
1147 19209 dia_change |= check_block_inter(s, mb_x, mb_y, newx-4*(i-j), newy-(4*j), obmc_edged, &best_rd);
1148 19209 dia_change |= check_block_inter(s, mb_x, mb_y, newx-(4*j), newy+4*(i-j), obmc_edged, &best_rd);
1149 19209 dia_change |= check_block_inter(s, mb_x, mb_y, newx+(4*j), newy-4*(i-j), obmc_edged, &best_rd);
1150 }
1151 }
1152
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19209 }while(dia_change);
1153 /* subpel ME */
1154 do{
1155 static const int square[8][2]= {{+1, 0},{-1, 0},{ 0,+1},{ 0,-1},{+1,+1},{-1,-1},{+1,-1},{-1,+1},};
1156 27615 dia_change=0;
1157
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248535 for(i=0; i<8; i++)
1158 220920 dia_change |= check_block_inter(s, mb_x, mb_y, block->mx+square[i][0], block->my+square[i][1], obmc_edged, &best_rd);
1159
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27615 }while(dia_change);
1160 //FIXME or try the standard 2 pass qpel or similar
1161
1162 18785 mvr[0][0]= block->mx;
1163 18785 mvr[0][1]= block->my;
1164
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18785 if(ref_rd > best_rd){
1165 4553 ref_rd= best_rd;
1166 4553 ref_b= *block;
1167 }
1168 }
1169 18785 best_rd= ref_rd;
1170 18785 *block= ref_b;
1171 18785 check_block_intra(s, mb_x, mb_y, color, obmc_edged, &best_rd);
1172 //FIXME RD style color selection
1173
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18785 if(!same_block(block, &backup)){
1174
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4573 if(tb ) tb ->type &= ~BLOCK_OPT;
1175
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4573 if(lb ) lb ->type &= ~BLOCK_OPT;
1176
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✓ Branch 1 taken 532 times.
4573 if(rb ) rb ->type &= ~BLOCK_OPT;
1177
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4573 if(bb ) bb ->type &= ~BLOCK_OPT;
1178
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4573 if(tlb) tlb->type &= ~BLOCK_OPT;
1179
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4573 if(trb) trb->type &= ~BLOCK_OPT;
1180
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4573 if(blb) blb->type &= ~BLOCK_OPT;
1181
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4573 if(brb) brb->type &= ~BLOCK_OPT;
1182 4573 change ++;
1183 }
1184 }
1185 }
1186 964 av_log(s->avctx, AV_LOG_DEBUG, "pass:%d changed:%d\n", pass, change);
1187
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964 if(!change)
1188 270 break;
1189 }
1190
1191
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270 if(s->block_max_depth == 1){
1192 int change= 0;
1193 for(mb_y= 0; mb_y<b_height; mb_y+=2){
1194 for(mb_x= 0; mb_x<b_width; mb_x+=2){
1195 int i;
1196 int best_rd, init_rd;
1197 const int index= mb_x + mb_y * b_stride;
1198 BlockNode *b[4];
1199
1200 b[0]= &s->block[index];
1201 b[1]= b[0]+1;
1202 b[2]= b[0]+b_stride;
1203 b[3]= b[2]+1;
1204 if(same_block(b[0], b[1]) &&
1205 same_block(b[0], b[2]) &&
1206 same_block(b[0], b[3]))
1207 continue;
1208
1209 if(!s->me_cache_generation)
1210 memset(s->me_cache, 0, sizeof(s->me_cache));
1211 s->me_cache_generation += 1<<22;
1212
1213 init_rd= best_rd= get_4block_rd(s, mb_x, mb_y, 0);
1214
1215 //FIXME more multiref search?
1216 check_4block_inter(s, mb_x, mb_y,
1217 (b[0]->mx + b[1]->mx + b[2]->mx + b[3]->mx + 2) >> 2,
1218 (b[0]->my + b[1]->my + b[2]->my + b[3]->my + 2) >> 2, 0, &best_rd);
1219
1220 for(i=0; i<4; i++)
1221 if(!(b[i]->type&BLOCK_INTRA))
1222 check_4block_inter(s, mb_x, mb_y, b[i]->mx, b[i]->my, b[i]->ref, &best_rd);
1223
1224 if(init_rd != best_rd)
1225 change++;
1226 }
1227 }
1228 av_log(s->avctx, AV_LOG_ERROR, "pass:4mv changed:%d\n", change*4);
1229 }
1230 270 }
1231
1232 450 static void encode_blocks(SnowContext *s, int search){
1233 int x, y;
1234 450 int w= s->b_width;
1235 450 int h= s->b_height;
1236
1237
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450 if(s->motion_est == FF_ME_ITER && !s->keyframe && search)
1238 270 iterative_me(s);
1239
1240
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4350 for(y=0; y<h; y++){
1241
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3900 if(s->c.bytestream_end - s->c.bytestream < w*MB_SIZE*MB_SIZE*3){ //FIXME nicer limit
1242 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
1243 return;
1244 }
1245
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72900 for(x=0; x<w; x++){
1246
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69000 if(s->motion_est == FF_ME_ITER || !search)
1247 9600 encode_q_branch2(s, 0, x, y);
1248 else
1249 59400 encode_q_branch (s, 0, x, y);
1250 }
1251 }
1252 }
1253
1254 21600 static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias){
1255 21600 const int w= b->width;
1256 21600 const int h= b->height;
1257 21600 const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1258 21600 const int qmul= ff_qexp[qlog&(QROOT-1)]<<((qlog>>QSHIFT) + ENCODER_EXTRA_BITS);
1259 int x,y, thres1, thres2;
1260
1261
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21600 if(s->qlog == LOSSLESS_QLOG){
1262
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261000 for(y=0; y<h; y++)
1263
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23063400 for(x=0; x<w; x++)
1264 22809600 dst[x + y*stride]= src[x + y*stride];
1265 7200 return;
1266 }
1267
1268
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14400 bias= bias ? 0 : (3*qmul)>>3;
1269 14400 thres1= ((qmul - bias)>>QEXPSHIFT) - 1;
1270 14400 thres2= 2*thres1;
1271
1272
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14400 if(!bias){
1273
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114480 for(y=0; y<h; y++){
1274
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3419280 for(x=0; x<w; x++){
1275 3317760 int i= src[x + y*stride];
1276
1277
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3317760 if((unsigned)(i+thres1) > thres2){
1278
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550125 if(i>=0){
1279 275359 i<<= QEXPSHIFT;
1280 275359 i/= qmul; //FIXME optimize
1281 275359 dst[x + y*stride]= i;
1282 }else{
1283 274766 i= -i;
1284 274766 i<<= QEXPSHIFT;
1285 274766 i/= qmul; //FIXME optimize
1286 274766 dst[x + y*stride]= -i;
1287 }
1288 }else
1289 2767635 dst[x + y*stride]= 0;
1290 }
1291 }
1292 }else{
1293
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12720 for(y=0; y<h; y++){
1294
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379920 for(x=0; x<w; x++){
1295 368640 int i= src[x + y*stride];
1296
1297
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368640 if((unsigned)(i+thres1) > thres2){
1298
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202458 if(i>=0){
1299 101688 i<<= QEXPSHIFT;
1300 101688 i= (i + bias) / qmul; //FIXME optimize
1301 101688 dst[x + y*stride]= i;
1302 }else{
1303 100770 i= -i;
1304 100770 i<<= QEXPSHIFT;
1305 100770 i= (i + bias) / qmul; //FIXME optimize
1306 100770 dst[x + y*stride]= -i;
1307 }
1308 }else
1309 166182 dst[x + y*stride]= 0;
1310 }
1311 }
1312 }
1313 }
1314
1315 21600 static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride){
1316 21600 const int w= b->width;
1317 21600 const int h= b->height;
1318 21600 const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16);
1319 21600 const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1320 21600 const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
1321 int x,y;
1322
1323
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21600 if(s->qlog == LOSSLESS_QLOG) return;
1324
1325
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127200 for(y=0; y<h; y++){
1326
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3799200 for(x=0; x<w; x++){
1327 3686400 int i= src[x + y*stride];
1328
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3686400 if(i<0){
1329 375486 src[x + y*stride]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias
1330
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3310914 }else if(i>0){
1331 377019 src[x + y*stride]= (( i*qmul + qadd)>>(QEXPSHIFT));
1332 }
1333 }
1334 }
1335 }
1336
1337 1350 static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
1338 1350 const int w= b->width;
1339 1350 const int h= b->height;
1340 int x,y;
1341
1342
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5400 for(y=h-1; y>=0; y--){
1343
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31500 for(x=w-1; x>=0; x--){
1344 27450 int i= x + y*stride;
1345
1346
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27450 if(x){
1347
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23400 if(use_median){
1348 if(y && x+1<w) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
1349 else src[i] -= src[i - 1];
1350 }else{
1351
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23400 if(y) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
1352 4500 else src[i] -= src[i - 1];
1353 }
1354 }else{
1355
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4050 if(y) src[i] -= src[i - stride];
1356 }
1357 }
1358 }
1359 1350 }
1360
1361 1350 static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median){
1362 1350 const int w= b->width;
1363 1350 const int h= b->height;
1364 int x,y;
1365
1366
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5400 for(y=0; y<h; y++){
1367
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31500 for(x=0; x<w; x++){
1368 27450 int i= x + y*stride;
1369
1370
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27450 if(x){
1371
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23400 if(use_median){
1372 if(y && x+1<w) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
1373 else src[i] += src[i - 1];
1374 }else{
1375
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23400 if(y) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
1376 4500 else src[i] += src[i - 1];
1377 }
1378 }else{
1379
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4050 if(y) src[i] += src[i - stride];
1380 }
1381 }
1382 }
1383 1350 }
1384
1385 45 static void encode_qlogs(SnowContext *s){
1386 int plane_index, level, orientation;
1387
1388
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135 for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1389
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540 for(level=0; level<s->spatial_decomposition_count; level++){
1390
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1890 for(orientation=level ? 1:0; orientation<4; orientation++){
1391
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1440 if(orientation==2) continue;
1392 990 put_symbol(&s->c, s->header_state, s->plane[plane_index].band[level][orientation].qlog, 1);
1393 }
1394 }
1395 }
1396 45 }
1397
1398 450 static void encode_header(SnowContext *s){
1399 int plane_index, i;
1400 uint8_t kstate[32];
1401
1402 450 memset(kstate, MID_STATE, sizeof(kstate));
1403
1404 450 put_rac(&s->c, kstate, s->keyframe);
1405
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450 if(s->keyframe || s->always_reset){
1406 45 ff_snow_reset_contexts(s);
1407 45 s->last_spatial_decomposition_type=
1408 45 s->last_qlog=
1409 45 s->last_qbias=
1410 45 s->last_mv_scale=
1411 45 s->last_block_max_depth= 0;
1412
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135 for(plane_index=0; plane_index<2; plane_index++){
1413 90 Plane *p= &s->plane[plane_index];
1414 90 p->last_htaps=0;
1415 90 p->last_diag_mc=0;
1416 90 memset(p->last_hcoeff, 0, sizeof(p->last_hcoeff));
1417 }
1418 }
1419
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450 if(s->keyframe){
1420 45 put_symbol(&s->c, s->header_state, s->version, 0);
1421 45 put_rac(&s->c, s->header_state, s->always_reset);
1422 45 put_symbol(&s->c, s->header_state, s->temporal_decomposition_type, 0);
1423 45 put_symbol(&s->c, s->header_state, s->temporal_decomposition_count, 0);
1424 45 put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
1425 45 put_symbol(&s->c, s->header_state, s->colorspace_type, 0);
1426
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45 if (s->nb_planes > 2) {
1427 45 put_symbol(&s->c, s->header_state, s->chroma_h_shift, 0);
1428 45 put_symbol(&s->c, s->header_state, s->chroma_v_shift, 0);
1429 }
1430 45 put_rac(&s->c, s->header_state, s->spatial_scalability);
1431 // put_rac(&s->c, s->header_state, s->rate_scalability);
1432 45 put_symbol(&s->c, s->header_state, s->max_ref_frames-1, 0);
1433
1434 45 encode_qlogs(s);
1435 }
1436
1437
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450 if(!s->keyframe){
1438 405 int update_mc=0;
1439
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1215 for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1440 810 Plane *p= &s->plane[plane_index];
1441 810 update_mc |= p->last_htaps != p->htaps;
1442 810 update_mc |= p->last_diag_mc != p->diag_mc;
1443 810 update_mc |= !!memcmp(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
1444 }
1445 405 put_rac(&s->c, s->header_state, update_mc);
1446
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405 if(update_mc){
1447
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135 for(plane_index=0; plane_index<FFMIN(s->nb_planes, 2); plane_index++){
1448 90 Plane *p= &s->plane[plane_index];
1449 90 put_rac(&s->c, s->header_state, p->diag_mc);
1450 90 put_symbol(&s->c, s->header_state, p->htaps/2-1, 0);
1451
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360 for(i= p->htaps/2; i; i--)
1452 270 put_symbol(&s->c, s->header_state, FFABS(p->hcoeff[i]), 0);
1453 }
1454 }
1455
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405 if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){
1456 put_rac(&s->c, s->header_state, 1);
1457 put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
1458 encode_qlogs(s);
1459 }else
1460 405 put_rac(&s->c, s->header_state, 0);
1461 }
1462
1463 450 put_symbol(&s->c, s->header_state, s->spatial_decomposition_type - s->last_spatial_decomposition_type, 1);
1464 450 put_symbol(&s->c, s->header_state, s->qlog - s->last_qlog , 1);
1465 450 put_symbol(&s->c, s->header_state, s->mv_scale - s->last_mv_scale, 1);
1466 450 put_symbol(&s->c, s->header_state, s->qbias - s->last_qbias , 1);
1467 450 put_symbol(&s->c, s->header_state, s->block_max_depth - s->last_block_max_depth, 1);
1468
1469 450 }
1470
1471 450 static void update_last_header_values(SnowContext *s){
1472 int plane_index;
1473
1474
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450 if(!s->keyframe){
1475
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1215 for(plane_index=0; plane_index<2; plane_index++){
1476 810 Plane *p= &s->plane[plane_index];
1477 810 p->last_diag_mc= p->diag_mc;
1478 810 p->last_htaps = p->htaps;
1479 810 memcpy(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff));
1480 }
1481 }
1482
1483 450 s->last_spatial_decomposition_type = s->spatial_decomposition_type;
1484 450 s->last_qlog = s->qlog;
1485 450 s->last_qbias = s->qbias;
1486 450 s->last_mv_scale = s->mv_scale;
1487 450 s->last_block_max_depth = s->block_max_depth;
1488 450 s->last_spatial_decomposition_count = s->spatial_decomposition_count;
1489 450 }
1490
1491 300 static int qscale2qlog(int qscale){
1492 300 return lrint(QROOT*log2(qscale / (float)FF_QP2LAMBDA))
1493 300 + 61*QROOT/8; ///< 64 > 60
1494 }
1495
1496 static int ratecontrol_1pass(SnowContext *s, AVFrame *pict)
1497 {
1498 /* Estimate the frame's complexity as a sum of weighted dwt coefficients.
1499 * FIXME we know exact mv bits at this point,
1500 * but ratecontrol isn't set up to include them. */
1501 uint32_t coef_sum= 0;
1502 int level, orientation, delta_qlog;
1503
1504 for(level=0; level<s->spatial_decomposition_count; level++){
1505 for(orientation=level ? 1 : 0; orientation<4; orientation++){
1506 SubBand *b= &s->plane[0].band[level][orientation];
1507 IDWTELEM *buf= b->ibuf;
1508 const int w= b->width;
1509 const int h= b->height;
1510 const int stride= b->stride;
1511 const int qlog= av_clip(2*QROOT + b->qlog, 0, QROOT*16);
1512 const int qmul= ff_qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT);
1513 const int qdiv= (1<<16)/qmul;
1514 int x, y;
1515 //FIXME this is ugly
1516 for(y=0; y<h; y++)
1517 for(x=0; x<w; x++)
1518 buf[x+y*stride]= b->buf[x+y*stride];
1519 if(orientation==0)
1520 decorrelate(s, b, buf, stride, 1, 0);
1521 for(y=0; y<h; y++)
1522 for(x=0; x<w; x++)
1523 coef_sum+= abs(buf[x+y*stride]) * qdiv >> 16;
1524 }
1525 }
1526
1527 /* ugly, ratecontrol just takes a sqrt again */
1528 av_assert0(coef_sum < INT_MAX);
1529 coef_sum = (uint64_t)coef_sum * coef_sum >> 16;
1530
1531 if(pict->pict_type == AV_PICTURE_TYPE_I){
1532 s->m.mb_var_sum = coef_sum;
1533 s->m.mc_mb_var_sum = 0;
1534 }else{
1535 s->m.mc_mb_var_sum = coef_sum;
1536 s->m.mb_var_sum = 0;
1537 }
1538
1539 pict->quality= ff_rate_estimate_qscale(&s->m, 1);
1540 if (pict->quality < 0)
1541 return INT_MIN;
1542 s->lambda= pict->quality * 3/2;
1543 delta_qlog= qscale2qlog(pict->quality) - s->qlog;
1544 s->qlog+= delta_qlog;
1545 return delta_qlog;
1546 }
1547
1548 27 static void calculate_visual_weight(SnowContext *s, Plane *p){
1549 27 int width = p->width;
1550 27 int height= p->height;
1551 int level, orientation, x, y;
1552
1553
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162 for(level=0; level<s->spatial_decomposition_count; level++){
1554
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567 for(orientation=level ? 1 : 0; orientation<4; orientation++){
1555 432 SubBand *b= &p->band[level][orientation];
1556 432 IDWTELEM *ibuf= b->ibuf;
1557 432 int64_t error=0;
1558
1559 432 memset(s->spatial_idwt_buffer, 0, sizeof(*s->spatial_idwt_buffer)*width*height);
1560 432 ibuf[b->width/2 + b->height/2*b->stride]= 256*16;
1561 432 ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, width, height, width, s->spatial_decomposition_type, s->spatial_decomposition_count);
1562
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40368 for(y=0; y<height; y++){
1563
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8518656 for(x=0; x<width; x++){
1564 8478720 int64_t d= s->spatial_idwt_buffer[x + y*width]*16;
1565 8478720 error += d*d;
1566 }
1567 }
1568
1569 432 b->qlog= (int)(QROOT * log2(352256.0/sqrt(error)) + 0.5);
1570 }
1571 }
1572 27 }
1573
1574 450 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
1575 const AVFrame *pict, int *got_packet)
1576 {
1577 450 SnowContext *s = avctx->priv_data;
1578 450 RangeCoder * const c= &s->c;
1579 AVFrame *pic;
1580 450 const int width= s->avctx->width;
1581 450 const int height= s->avctx->height;
1582 int level, orientation, plane_index, i, y, ret;
1583 uint8_t rc_header_bak[sizeof(s->header_state)];
1584 uint8_t rc_block_bak[sizeof(s->block_state)];
1585
1586
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450 if ((ret = ff_alloc_packet(avctx, pkt, s->b_width*s->b_height*MB_SIZE*MB_SIZE*3 + AV_INPUT_BUFFER_MIN_SIZE)) < 0)
1587 return ret;
1588
1589 450 ff_init_range_encoder(c, pkt->data, pkt->size);
1590 450 ff_build_rac_states(c, (1LL<<32)/20, 256-8);
1591
1592
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1800 for(i=0; i < s->nb_planes; i++){
1593
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1350 int hshift= i ? s->chroma_h_shift : 0;
1594
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1350 int vshift= i ? s->chroma_v_shift : 0;
1595
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126150 for(y=0; y<AV_CEIL_RSHIFT(height, vshift); y++)
1596 124800 memcpy(&s->input_picture->data[i][y * s->input_picture->linesize[i]],
1597 124800 &pict->data[i][y * pict->linesize[i]],
1598 124800 AV_CEIL_RSHIFT(width, hshift));
1599 1350 s->mpvencdsp.draw_edges(s->input_picture->data[i], s->input_picture->linesize[i],
1600 1350 AV_CEIL_RSHIFT(width, hshift), AV_CEIL_RSHIFT(height, vshift),
1601 EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
1602 EDGE_TOP | EDGE_BOTTOM);
1603
1604 }
1605 450 emms_c();
1606 450 pic = s->input_picture;
1607 450 pic->pict_type = pict->pict_type;
1608 450 pic->quality = pict->quality;
1609
1610 450 s->m.picture_number= avctx->frame_number;
1611
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450 if(avctx->flags&AV_CODEC_FLAG_PASS2){
1612 s->m.pict_type = pic->pict_type = s->m.rc_context.entry[avctx->frame_number].new_pict_type;
1613 s->keyframe = pic->pict_type == AV_PICTURE_TYPE_I;
1614 if(!(avctx->flags&AV_CODEC_FLAG_QSCALE)) {
1615 pic->quality = ff_rate_estimate_qscale(&s->m, 0);
1616 if (pic->quality < 0)
1617 return -1;
1618 }
1619 }else{
1620
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450 s->keyframe= avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
1621
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450 s->m.pict_type = pic->pict_type = s->keyframe ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P;
1622 }
1623
1624
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450 if(s->pass1_rc && avctx->frame_number == 0)
1625 pic->quality = 2*FF_QP2LAMBDA;
1626
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450 if (pic->quality) {
1627 300 s->qlog = qscale2qlog(pic->quality);
1628 300 s->lambda = pic->quality * 3/2;
1629 }
1630
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450 if (s->qlog < 0 || (!pic->quality && (avctx->flags & AV_CODEC_FLAG_QSCALE))) {
1631 150 s->qlog= LOSSLESS_QLOG;
1632 150 s->lambda = 0;
1633 }//else keep previous frame's qlog until after motion estimation
1634
1635
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450 if (s->current_picture->data[0]) {
1636 441 int w = s->avctx->width;
1637 441 int h = s->avctx->height;
1638
1639 441 s->mpvencdsp.draw_edges(s->current_picture->data[0],
1640 441 s->current_picture->linesize[0], w , h ,
1641 EDGE_WIDTH , EDGE_WIDTH , EDGE_TOP | EDGE_BOTTOM);
1642
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441 if (s->current_picture->data[2]) {
1643 441 s->mpvencdsp.draw_edges(s->current_picture->data[1],
1644 441 s->current_picture->linesize[1], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
1645 441 EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
1646 441 s->mpvencdsp.draw_edges(s->current_picture->data[2],
1647 441 s->current_picture->linesize[2], w>>s->chroma_h_shift, h>>s->chroma_v_shift,
1648 441 EDGE_WIDTH>>s->chroma_h_shift, EDGE_WIDTH>>s->chroma_v_shift, EDGE_TOP | EDGE_BOTTOM);
1649 }
1650 441 emms_c();
1651 }
1652
1653 450 ff_snow_frame_start(s);
1654
1655 450 s->m.current_picture_ptr= &s->m.current_picture;
1656 450 s->m.current_picture.f = s->current_picture;
1657 450 s->m.current_picture.f->pts = pict->pts;
1658
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450 if(pic->pict_type == AV_PICTURE_TYPE_P){
1659 405 int block_width = (width +15)>>4;
1660 405 int block_height= (height+15)>>4;
1661 405 int stride= s->current_picture->linesize[0];
1662
1663
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405 av_assert0(s->current_picture->data[0]);
1664
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405 av_assert0(s->last_picture[0]->data[0]);
1665
1666 405 s->m.avctx= s->avctx;
1667 405 s->m. last_picture.f = s->last_picture[0];
1668 405 s->m. new_picture = s->input_picture;
1669 405 s->m. last_picture_ptr= &s->m. last_picture;
1670 405 s->m.linesize = stride;
1671 405 s->m.uvlinesize= s->current_picture->linesize[1];
1672 405 s->m.width = width;
1673 405 s->m.height= height;
1674 405 s->m.mb_width = block_width;
1675 405 s->m.mb_height= block_height;
1676 405 s->m.mb_stride= s->m.mb_width+1;
1677 405 s->m.b8_stride= 2*s->m.mb_width+1;
1678 405 s->m.f_code=1;
1679 405 s->m.pict_type = pic->pict_type;
1680 405 s->m.motion_est= s->motion_est;
1681 405 s->m.me.scene_change_score=0;
1682 405 s->m.me.dia_size = avctx->dia_size;
1683 405 s->m.quarter_sample= (s->avctx->flags & AV_CODEC_FLAG_QPEL)!=0;
1684 405 s->m.out_format= FMT_H263;
1685 405 s->m.unrestricted_mv= 1;
1686
1687 405 s->m.lambda = s->lambda;
1688 405 s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
1689 405 s->lambda2= s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
1690
1691 405 s->m.mecc= s->mecc; //move
1692 405 s->m.qdsp= s->qdsp; //move
1693 405 s->m.hdsp = s->hdsp;
1694 405 ff_init_me(&s->m);
1695 405 s->hdsp = s->m.hdsp;
1696 405 s->mecc= s->m.mecc;
1697 }
1698
1699
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450 if(s->pass1_rc){
1700 memcpy(rc_header_bak, s->header_state, sizeof(s->header_state));
1701 memcpy(rc_block_bak, s->block_state, sizeof(s->block_state));
1702 }
1703
1704 450 redo_frame:
1705
1706 450 s->spatial_decomposition_count= 5;
1707
1708 450 while( !(width >>(s->chroma_h_shift + s->spatial_decomposition_count))
1709
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450 || !(height>>(s->chroma_v_shift + s->spatial_decomposition_count)))
1710 s->spatial_decomposition_count--;
1711
1712
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450 if (s->spatial_decomposition_count <= 0) {
1713 av_log(avctx, AV_LOG_ERROR, "Resolution too low\n");
1714 return AVERROR(EINVAL);
1715 }
1716
1717 450 s->m.pict_type = pic->pict_type;
1718
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450 s->qbias = pic->pict_type == AV_PICTURE_TYPE_P ? 2 : 0;
1719
1720 450 ff_snow_common_init_after_header(avctx);
1721
1722
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450 if(s->last_spatial_decomposition_count != s->spatial_decomposition_count){
1723
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36 for(plane_index=0; plane_index < s->nb_planes; plane_index++){
1724 27 calculate_visual_weight(s, &s->plane[plane_index]);
1725 }
1726 }
1727
1728 450 encode_header(s);
1729 450 s->m.misc_bits = 8*(s->c.bytestream - s->c.bytestream_start);
1730 450 encode_blocks(s, 1);
1731 450 s->m.mv_bits = 8*(s->c.bytestream - s->c.bytestream_start) - s->m.misc_bits;
1732
1733
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1800 for(plane_index=0; plane_index < s->nb_planes; plane_index++){
1734 1350 Plane *p= &s->plane[plane_index];
1735 1350 int w= p->width;
1736 1350 int h= p->height;
1737 int x, y;
1738 // int bits= put_bits_count(&s->c.pb);
1739
1740
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1350 if (!s->memc_only) {
1741 //FIXME optimize
1742
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1350 if(pict->data[plane_index]) //FIXME gray hack
1743
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126150 for(y=0; y<h; y++){
1744
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26620800 for(x=0; x<w; x++){
1745 26496000 s->spatial_idwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<FRAC_BITS;
1746 }
1747 }
1748 1350 predict_plane(s, s->spatial_idwt_buffer, plane_index, 0);
1749
1750
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1350 if( plane_index==0
1751
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450 && pic->pict_type == AV_PICTURE_TYPE_P
1752
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405 && !(avctx->flags&AV_CODEC_FLAG_PASS2)
1753
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405 && s->m.me.scene_change_score > s->scenechange_threshold){
1754 ff_init_range_encoder(c, pkt->data, pkt->size);
1755 ff_build_rac_states(c, (1LL<<32)/20, 256-8);
1756 pic->pict_type= AV_PICTURE_TYPE_I;
1757 s->keyframe=1;
1758 s->current_picture->key_frame=1;
1759 goto redo_frame;
1760 }
1761
1762
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1350 if(s->qlog == LOSSLESS_QLOG){
1763
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86850 for(y=0; y<h; y++){
1764
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22896000 for(x=0; x<w; x++){
1765 22809600 s->spatial_dwt_buffer[y*w + x]= (s->spatial_idwt_buffer[y*w + x] + (1<<(FRAC_BITS-1))-1)>>FRAC_BITS;
1766 }
1767 }
1768 }else{
1769
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39300 for(y=0; y<h; y++){
1770
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3724800 for(x=0; x<w; x++){
1771 3686400 s->spatial_dwt_buffer[y*w + x]= s->spatial_idwt_buffer[y*w + x] * (1 << ENCODER_EXTRA_BITS);
1772 }
1773 }
1774 }
1775
1776 1350 ff_spatial_dwt(s->spatial_dwt_buffer, s->temp_dwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);
1777
1778
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1350 if(s->pass1_rc && plane_index==0){
1779 int delta_qlog = ratecontrol_1pass(s, pic);
1780 if (delta_qlog <= INT_MIN)
1781 return -1;
1782 if(delta_qlog){
1783 //reordering qlog in the bitstream would eliminate this reset
1784 ff_init_range_encoder(c, pkt->data, pkt->size);
1785 memcpy(s->header_state, rc_header_bak, sizeof(s->header_state));
1786 memcpy(s->block_state, rc_block_bak, sizeof(s->block_state));
1787 encode_header(s);
1788 encode_blocks(s, 0);
1789 }
1790 }
1791
1792
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8100 for(level=0; level<s->spatial_decomposition_count; level++){
1793
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28350 for(orientation=level ? 1 : 0; orientation<4; orientation++){
1794 21600 SubBand *b= &p->band[level][orientation];
1795
1796 21600 quantize(s, b, b->ibuf, b->buf, b->stride, s->qbias);
1797
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21600 if(orientation==0)
1798 1350 decorrelate(s, b, b->ibuf, b->stride, pic->pict_type == AV_PICTURE_TYPE_P, 0);
1799
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21600 if (!s->no_bitstream)
1800
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21600 encode_subband(s, b, b->ibuf, b->parent ? b->parent->ibuf : NULL, b->stride, orientation);
1801
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21600 av_assert0(b->parent==NULL || b->parent->stride == b->stride*2);
1802
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21600 if(orientation==0)
1803 1350 correlate(s, b, b->ibuf, b->stride, 1, 0);
1804 }
1805 }
1806
1807
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8100 for(level=0; level<s->spatial_decomposition_count; level++){
1808
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28350 for(orientation=level ? 1 : 0; orientation<4; orientation++){
1809 21600 SubBand *b= &p->band[level][orientation];
1810
1811 21600 dequantize(s, b, b->ibuf, b->stride);
1812 }
1813 }
1814
1815 1350 ff_spatial_idwt(s->spatial_idwt_buffer, s->temp_idwt_buffer, w, h, w, s->spatial_decomposition_type, s->spatial_decomposition_count);
1816
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1350 if(s->qlog == LOSSLESS_QLOG){
1817
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86850 for(y=0; y<h; y++){
1818
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22896000 for(x=0; x<w; x++){
1819 22809600 s->spatial_idwt_buffer[y*w + x] *= 1 << FRAC_BITS;
1820 }
1821 }
1822 }
1823 1350 predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
1824 }else{
1825 //ME/MC only
1826 if(pic->pict_type == AV_PICTURE_TYPE_I){
1827 for(y=0; y<h; y++){
1828 for(x=0; x<w; x++){
1829 s->current_picture->data[plane_index][y*s->current_picture->linesize[plane_index] + x]=
1830 pict->data[plane_index][y*pict->linesize[plane_index] + x];
1831 }
1832 }
1833 }else{
1834 memset(s->spatial_idwt_buffer, 0, sizeof(IDWTELEM)*w*h);
1835 predict_plane(s, s->spatial_idwt_buffer, plane_index, 1);
1836 }
1837 }
1838
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1350 if(s->avctx->flags&AV_CODEC_FLAG_PSNR){
1839 int64_t error= 0;
1840
1841 if(pict->data[plane_index]) //FIXME gray hack
1842 for(y=0; y<h; y++){
1843 for(x=0; x<w; x++){
1844 int d= s->current_picture->data[plane_index][y*s->current_picture->linesize[plane_index] + x] - pict->data[plane_index][y*pict->linesize[plane_index] + x];
1845 error += d*d;
1846 }
1847 }
1848 s->avctx->error[plane_index] += error;
1849 s->encoding_error[plane_index] = error;
1850 }
1851
1852 }
1853 450 emms_c();
1854
1855 450 update_last_header_values(s);
1856
1857 450 ff_snow_release_buffer(avctx);
1858
1859 450 s->current_picture->coded_picture_number = avctx->frame_number;
1860 450 s->current_picture->pict_type = pic->pict_type;
1861 450 s->current_picture->quality = pic->quality;
1862 450 s->m.frame_bits = 8*(s->c.bytestream - s->c.bytestream_start);
1863 450 s->m.p_tex_bits = s->m.frame_bits - s->m.misc_bits - s->m.mv_bits;
1864 450 s->m.current_picture.f->display_picture_number =
1865 450 s->m.current_picture.f->coded_picture_number = avctx->frame_number;
1866 450 s->m.current_picture.f->quality = pic->quality;
1867 450 s->m.total_bits += 8*(s->c.bytestream - s->c.bytestream_start);
1868
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450 if(s->pass1_rc)
1869 if (ff_rate_estimate_qscale(&s->m, 0) < 0)
1870 return -1;
1871
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450 if(avctx->flags&AV_CODEC_FLAG_PASS1)
1872 ff_write_pass1_stats(&s->m);
1873 450 s->m.last_pict_type = s->m.pict_type;
1874
1875 450 emms_c();
1876
1877 450 ff_side_data_set_encoder_stats(pkt, s->current_picture->quality,
1878 450 s->encoding_error,
1879 450 (s->avctx->flags&AV_CODEC_FLAG_PSNR) ? SNOW_MAX_PLANES : 0,
1880 450 s->current_picture->pict_type);
1881
1882 450 pkt->size = ff_rac_terminate(c, 0);
1883
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450 if (s->current_picture->key_frame)
1884 45 pkt->flags |= AV_PKT_FLAG_KEY;
1885 450 *got_packet = 1;
1886
1887 450 return 0;
1888 }
1889
1890 9 static av_cold int encode_end(AVCodecContext *avctx)
1891 {
1892 9 SnowContext *s = avctx->priv_data;
1893
1894 9 ff_snow_common_end(s);
1895 9 ff_rate_control_uninit(&s->m);
1896 9 av_frame_free(&s->input_picture);
1897 9 av_freep(&avctx->stats_out);
1898
1899 9 return 0;
1900 }
1901
1902 #define OFFSET(x) offsetof(SnowContext, x)
1903 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
1904 static const AVOption options[] = {
1905 {"motion_est", "motion estimation algorithm", OFFSET(motion_est), AV_OPT_TYPE_INT, {.i64 = FF_ME_EPZS }, FF_ME_ZERO, FF_ME_ITER, VE, "motion_est" },
1906 { "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, VE, "motion_est" },
1907 { "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, VE, "motion_est" },
1908 { "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, VE, "motion_est" },
1909 { "iter", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ITER }, 0, 0, VE, "motion_est" },
1910 { "memc_only", "Only do ME/MC (I frames -> ref, P frame -> ME+MC).", OFFSET(memc_only), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1911 { "no_bitstream", "Skip final bitstream writeout.", OFFSET(no_bitstream), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
1912 { "intra_penalty", "Penalty for intra blocks in block decission", OFFSET(intra_penalty), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
1913 { "iterative_dia_size", "Dia size for the iterative ME", OFFSET(iterative_dia_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
1914 { "sc_threshold", "Scene change threshold", OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, VE },
1915 { "pred", "Spatial decomposition type", OFFSET(pred), AV_OPT_TYPE_INT, { .i64 = 0 }, DWT_97, DWT_53, VE, "pred" },
1916 { "dwt97", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "pred" },
1917 { "dwt53", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "pred" },
1918 { "rc_eq", "Set rate control equation. When computing the expression, besides the standard functions "
1919 "defined in the section 'Expression Evaluation', the following functions are available: "
1920 "bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv "
1921 "fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.",
1922 OFFSET(m.rc_eq), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, VE },
1923 { NULL },
1924 };
1925
1926 static const AVClass snowenc_class = {
1927 .class_name = "snow encoder",
1928 .item_name = av_default_item_name,
1929 .option = options,
1930 .version = LIBAVUTIL_VERSION_INT,
1931 };
1932
1933 const FFCodec ff_snow_encoder = {
1934 .p.name = "snow",
1935 CODEC_LONG_NAME("Snow"),
1936 .p.type = AVMEDIA_TYPE_VIDEO,
1937 .p.id = AV_CODEC_ID_SNOW,
1938 .p.capabilities = AV_CODEC_CAP_DR1,
1939 .priv_data_size = sizeof(SnowContext),
1940 .init = encode_init,
1941 FF_CODEC_ENCODE_CB(encode_frame),
1942 .close = encode_end,
1943 .p.pix_fmts = (const enum AVPixelFormat[]){
1944 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV444P,
1945 AV_PIX_FMT_GRAY8,
1946 AV_PIX_FMT_NONE
1947 },
1948 .p.priv_class = &snowenc_class,
1949 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
1950 };
1951