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1 : | suxen_drol | 942 | /****************************************************************************** |
2 : | * | ||
3 : | * XviD Bit Rate Controller Library | ||
4 : | * - VBR 2 pass bitrate controler implementation - | ||
5 : | * | ||
6 : | edgomez | 1037 | * Copyright (C) 2002 Foxer <email?> |
7 : | * 2002 Dirk Knop <dknop@gwdg.de> | ||
8 : | * 2002-2003 Edouard Gomez <ed.gomez@free.fr> | ||
9 : | * 2003 Pete Ross <pross@xvid.org> | ||
10 : | suxen_drol | 942 | * |
11 : | edgomez | 1037 | * This curve treatment algorithm is the one originally implemented by Foxer |
12 : | * and tuned by Dirk Knop for the XviD vfw frontend. | ||
13 : | suxen_drol | 942 | * |
14 : | * This program is free software; you can redistribute it and/or modify | ||
15 : | * it under the terms of the GNU General Public License as published by | ||
16 : | * the Free Software Foundation; either version 2 of the License, or | ||
17 : | * (at your option) any later version. | ||
18 : | * | ||
19 : | * This program is distributed in the hope that it will be useful, | ||
20 : | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
21 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
22 : | * GNU General Public License for more details. | ||
23 : | * | ||
24 : | * You should have received a copy of the GNU General Public License | ||
25 : | * along with this program; if not, write to the Free Software | ||
26 : | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
27 : | * | ||
28 : | edgomez | 1037 | * $Id: plugin_2pass2.c,v 1.1.2.7 2003-05-22 10:57:33 edgomez Exp $ |
29 : | suxen_drol | 942 | * |
30 : | *****************************************************************************/ | ||
31 : | |||
32 : | #include <stdio.h> | ||
33 : | #include <math.h> | ||
34 : | |||
35 : | #define RAD2DEG 57.295779513082320876798154814105 | ||
36 : | #define DEG2RAD 0.017453292519943295769236907684886 | ||
37 : | |||
38 : | #include "../xvid.h" | ||
39 : | #include "../image/image.h" | ||
40 : | |||
41 : | typedef struct { | ||
42 : | int type; /* first pass type */ | ||
43 : | int quant; /* first pass quant */ | ||
44 : | suxen_drol | 977 | int blks[3]; /* k,m,y blks */ |
45 : | suxen_drol | 942 | int length; /* first pass length */ |
46 : | suxen_drol | 1030 | int scaled_length; /* scaled length */ |
47 : | int desired_length; /* desired length; calcuated during encoding */ | ||
48 : | |||
49 : | int zone_mode; /* XVID_ZONE_xxx */ | ||
50 : | double weight; | ||
51 : | suxen_drol | 942 | } stat_t; |
52 : | |||
53 : | |||
54 : | |||
55 : | |||
56 : | /* context struct */ | ||
57 : | typedef struct | ||
58 : | { | ||
59 : | xvid_plugin_2pass2_t param; | ||
60 : | |||
61 : | /* constant statistical data */ | ||
62 : | suxen_drol | 977 | int num_frames; |
63 : | suxen_drol | 942 | int num_keyframes; |
64 : | suxen_drol | 1030 | uint64_t target; /* target filesize */ |
65 : | suxen_drol | 977 | |
66 : | suxen_drol | 942 | int count[3]; /* count of each frame types */ |
67 : | uint64_t tot_length[3]; /* total length of each frame types */ | ||
68 : | double avg_length[3]; /* avg */ | ||
69 : | int min_length[3]; /* min frame length of each frame types */ | ||
70 : | uint64_t tot_scaled_length[3]; /* total scaled length of each frame type */ | ||
71 : | int max_length; /* max frame size */ | ||
72 : | suxen_drol | 1030 | |
73 : | /* zone statistical data */ | ||
74 : | double avg_weight; /* average weight */ | ||
75 : | int64_t tot_quant; /* total length used by XVID_ZONE_QUANT zones */ | ||
76 : | |||
77 : | |||
78 : | suxen_drol | 942 | double curve_comp_scale; |
79 : | double movie_curve; | ||
80 : | |||
81 : | double alt_curve_low; | ||
82 : | double alt_curve_high; | ||
83 : | double alt_curve_low_diff; | ||
84 : | double alt_curve_high_diff; | ||
85 : | double alt_curve_curve_bias_bonus; | ||
86 : | double alt_curve_mid_qual; | ||
87 : | double alt_curve_qual_dev; | ||
88 : | |||
89 : | /* dynamic */ | ||
90 : | |||
91 : | int * keyframe_locations; | ||
92 : | stat_t * stats; | ||
93 : | |||
94 : | double pquant_error[32]; | ||
95 : | double bquant_error[32]; | ||
96 : | int quant_count[32]; | ||
97 : | int last_quant[3]; | ||
98 : | |||
99 : | double curve_comp_error; | ||
100 : | int overflow; | ||
101 : | int KFoverflow; | ||
102 : | int KFoverflow_partial; | ||
103 : | int KF_idx; | ||
104 : | suxen_drol | 1030 | |
105 : | double fq_error; | ||
106 : | suxen_drol | 942 | } rc_2pass2_t; |
107 : | |||
108 : | |||
109 : | |||
110 : | #define BUF_SZ 1024 | ||
111 : | #define MAX_COLS 5 | ||
112 : | |||
113 : | |||
114 : | /* open stats file, and count num frames */ | ||
115 : | |||
116 : | static int det_stats_length(rc_2pass2_t * rc, char * filename) | ||
117 : | { | ||
118 : | FILE * f; | ||
119 : | int n, ignore; | ||
120 : | char type; | ||
121 : | |||
122 : | rc->num_frames = 0; | ||
123 : | rc->num_keyframes = 0; | ||
124 : | |||
125 : | if ((f = fopen(filename, "rt")) == NULL) | ||
126 : | return 0; | ||
127 : | |||
128 : | suxen_drol | 977 | while((n = fscanf(f, "%c %d %d %d %d %d %d\n", |
129 : | &type, &ignore, &ignore, &ignore, &ignore, &ignore, &ignore)) != EOF) { | ||
130 : | suxen_drol | 942 | if (type == 'i') { |
131 : | rc->num_frames++; | ||
132 : | rc->num_keyframes++; | ||
133 : | }else if (type == 'p' || type == 'b' || type == 's') { | ||
134 : | rc->num_frames++; | ||
135 : | } | ||
136 : | } | ||
137 : | |||
138 : | fclose(f); | ||
139 : | |||
140 : | return 1; | ||
141 : | } | ||
142 : | |||
143 : | |||
144 : | |||
145 : | suxen_drol | 977 | /* open stats file(s) and read into rc->stats array */ |
146 : | suxen_drol | 942 | |
147 : | suxen_drol | 977 | static int load_stats(rc_2pass2_t *rc, char * filename) |
148 : | { | ||
149 : | FILE * f; | ||
150 : | int i, not_scaled; | ||
151 : | |||
152 : | |||
153 : | if ((f = fopen(filename, "rt"))==NULL) | ||
154 : | return 0; | ||
155 : | |||
156 : | i = 0; | ||
157 : | not_scaled = 0; | ||
158 : | while(i < rc->num_frames) { | ||
159 : | stat_t * s = &rc->stats[i]; | ||
160 : | int n; | ||
161 : | char type; | ||
162 : | |||
163 : | s->scaled_length = 0; | ||
164 : | n = fscanf(f, "%c %d %d %d %d %d %d\n", &type, &s->quant, &s->blks[0], &s->blks[1], &s->blks[2], &s->length, &s->scaled_length); | ||
165 : | if (n == EOF) break; | ||
166 : | if (n < 7) { | ||
167 : | not_scaled = 1; | ||
168 : | } | ||
169 : | |||
170 : | if (type == 'i') { | ||
171 : | s->type = XVID_TYPE_IVOP; | ||
172 : | }else if (type == 'p' || type == 's') { | ||
173 : | s->type = XVID_TYPE_PVOP; | ||
174 : | }else if (type == 'b') { | ||
175 : | s->type = XVID_TYPE_BVOP; | ||
176 : | }else{ /* unknown type */ | ||
177 : | suxen_drol | 1032 | DPRINTF(XVID_DEBUG_RC, "unknown stats frame type; assuming pvop"); |
178 : | s->type = XVID_TYPE_PVOP; | ||
179 : | suxen_drol | 977 | } |
180 : | |||
181 : | i++; | ||
182 : | } | ||
183 : | edgomez | 1037 | |
184 : | suxen_drol | 977 | rc->num_frames = i; |
185 : | |||
186 : | edgomez | 1037 | fclose(f); |
187 : | |||
188 : | suxen_drol | 977 | return 1; |
189 : | } | ||
190 : | |||
191 : | |||
192 : | |||
193 : | edgomez | 1036 | #if 0 |
194 : | suxen_drol | 942 | static void print_stats(rc_2pass2_t * rc) |
195 : | { | ||
196 : | int i; | ||
197 : | for (i = 0; i < rc->num_frames; i++) { | ||
198 : | stat_t * s = &rc->stats[i]; | ||
199 : | suxen_drol | 1032 | DPRINTF(XVID_DEBUG_RC, "%i %i %i %i\n", s->type, s->quant, s->length, s->scaled_length); |
200 : | suxen_drol | 942 | } |
201 : | } | ||
202 : | edgomez | 1036 | #endif |
203 : | suxen_drol | 942 | |
204 : | /* pre-process the statistics data | ||
205 : | suxen_drol | 1030 | - for each type, count, tot_length, min_length, max_length |
206 : | - set keyframes_locations | ||
207 : | suxen_drol | 942 | */ |
208 : | |||
209 : | suxen_drol | 977 | void pre_process0(rc_2pass2_t * rc) |
210 : | suxen_drol | 942 | { |
211 : | int i,j; | ||
212 : | |||
213 : | for (i=0; i<3; i++) { | ||
214 : | rc->count[i]=0; | ||
215 : | rc->tot_length[i] = 0; | ||
216 : | rc->last_quant[i] = 0; | ||
217 : | } | ||
218 : | |||
219 : | for (i=j=0; i<rc->num_frames; i++) { | ||
220 : | stat_t * s = &rc->stats[i]; | ||
221 : | |||
222 : | rc->count[s->type-1]++; | ||
223 : | rc->tot_length[s->type-1] += s->length; | ||
224 : | |||
225 : | if (i == 0 || s->length < rc->min_length[s->type-1]) { | ||
226 : | rc->min_length[s->type-1] = s->length; | ||
227 : | } | ||
228 : | |||
229 : | if (i == 0 || s->length > rc->max_length) { | ||
230 : | rc->max_length = s->length; | ||
231 : | } | ||
232 : | |||
233 : | if (s->type == XVID_TYPE_IVOP) { | ||
234 : | rc->keyframe_locations[j] = i; | ||
235 : | j++; | ||
236 : | } | ||
237 : | } | ||
238 : | edgomez | 1037 | |
239 : | /* | ||
240 : | * The "per sequence" overflow system considers a natural sequence to be | ||
241 : | * formed by all frames between two iframes, so if we want to make sure | ||
242 : | * the system does not go nuts during last sequence, we force the last | ||
243 : | * frame to appear in the keyframe locations array. | ||
244 : | */ | ||
245 : | suxen_drol | 942 | rc->keyframe_locations[j] = i; |
246 : | suxen_drol | 977 | } |
247 : | suxen_drol | 942 | |
248 : | suxen_drol | 1030 | |
249 : | /* calculate zone weight "center" */ | ||
250 : | suxen_drol | 977 | |
251 : | suxen_drol | 1030 | static void zone_process(rc_2pass2_t *rc, const xvid_plg_create_t * create) |
252 : | { | ||
253 : | int i,j; | ||
254 : | int n = 0; | ||
255 : | suxen_drol | 977 | |
256 : | suxen_drol | 1030 | rc->avg_weight = 0.0; |
257 : | rc->tot_quant = 0; | ||
258 : | |||
259 : | |||
260 : | if (create->num_zones == 0) { | ||
261 : | for (j = 0; j < rc->num_frames; j++) { | ||
262 : | rc->stats[j].zone_mode = XVID_ZONE_WEIGHT; | ||
263 : | rc->stats[j].weight = 1.0; | ||
264 : | } | ||
265 : | rc->avg_weight += rc->num_frames * 1.0; | ||
266 : | n += rc->num_frames; | ||
267 : | } | ||
268 : | |||
269 : | |||
270 : | for(i=0; i < create->num_zones; i++) { | ||
271 : | |||
272 : | int next = (i+1<create->num_zones) ? create->zones[i+1].frame : rc->num_frames; | ||
273 : | |||
274 : | if (i==0 && create->zones[i].frame > 0) { | ||
275 : | for (j = 0; j < create->zones[i].frame && j < rc->num_frames; j++) { | ||
276 : | rc->stats[j].zone_mode = XVID_ZONE_WEIGHT; | ||
277 : | rc->stats[j].weight = 1.0; | ||
278 : | } | ||
279 : | rc->avg_weight += create->zones[i].frame * 1.0; | ||
280 : | n += create->zones[i].frame; | ||
281 : | } | ||
282 : | |||
283 : | if (create->zones[i].mode == XVID_ZONE_WEIGHT) { | ||
284 : | for (j = create->zones[i].frame; j < next && j < rc->num_frames; j++ ) { | ||
285 : | rc->stats[j].zone_mode = XVID_ZONE_WEIGHT; | ||
286 : | rc->stats[j].weight = (double)create->zones[i].increment / (double)create->zones[i].base; | ||
287 : | } | ||
288 : | next -= create->zones[i].frame; | ||
289 : | rc->avg_weight += (double)(next * create->zones[i].increment) / (double)create->zones[i].base; | ||
290 : | n += next; | ||
291 : | }else{ // XVID_ZONE_QUANT | ||
292 : | for (j = create->zones[i].frame; j < next && j < rc->num_frames; j++ ) { | ||
293 : | rc->stats[j].zone_mode = XVID_ZONE_QUANT; | ||
294 : | rc->stats[j].weight = (double)create->zones[i].increment / (double)create->zones[i].base; | ||
295 : | rc->tot_quant += rc->stats[j].length; | ||
296 : | } | ||
297 : | } | ||
298 : | } | ||
299 : | rc->avg_weight = n>0 ? rc->avg_weight/n : 1.0; | ||
300 : | |||
301 : | suxen_drol | 1032 | DPRINTF(XVID_DEBUG_RC, "center_weight: %f (for %i frames); fixed_bytes: %i\n", rc->avg_weight, n, rc->tot_quant); |
302 : | suxen_drol | 1030 | } |
303 : | |||
304 : | |||
305 : | /* scale the curve */ | ||
306 : | |||
307 : | static void internal_scale(rc_2pass2_t *rc) | ||
308 : | { | ||
309 : | int64_t target = rc->target - rc->tot_quant; | ||
310 : | int64_t pass1_length = rc->tot_length[0] + rc->tot_length[1] + rc->tot_length[2] - rc->tot_quant; | ||
311 : | int min_size[3]; | ||
312 : | double scaler; | ||
313 : | int i; | ||
314 : | |||
315 : | |||
316 : | /* perform an initial scale pass. | ||
317 : | if a frame size is scaled underneath our hardcoded minimums, then we force the | ||
318 : | frame size to the minimum, and deduct the original & scaled frmae length from the | ||
319 : | original and target total lengths */ | ||
320 : | |||
321 : | min_size[0] = ((rc->stats[0].blks[0]*22) + 240) / 8; | ||
322 : | min_size[1] = (rc->stats[0].blks[0] + 88) / 8; | ||
323 : | min_size[2] = 8; | ||
324 : | |||
325 : | scaler = (double)target / (double)pass1_length; | ||
326 : | |||
327 : | suxen_drol | 1032 | if (target <= 0 || pass1_length <= 0 || target >= pass1_length) { |
328 : | DPRINTF(XVID_DEBUG_RC, "undersize warning\n"); | ||
329 : | scaler = 1.0; | ||
330 : | } | ||
331 : | |||
332 : | DPRINTF(XVID_DEBUG_RC, "target=%i, tot_length=%i, scaler=%f\n", (int)target, (int)pass1_length, scaler); | ||
333 : | |||
334 : | suxen_drol | 1030 | for (i=0; i<rc->num_frames; i++) { |
335 : | stat_t * s = &rc->stats[i]; | ||
336 : | int len; | ||
337 : | |||
338 : | if (s->zone_mode == XVID_ZONE_QUANT) { | ||
339 : | s->scaled_length = s->length; | ||
340 : | }else { | ||
341 : | len = (int)((double)s->length * scaler * s->weight / rc->avg_weight); | ||
342 : | edgomez | 1036 | if (len < min_size[s->type-1]) { /* force frame size */ |
343 : | s->scaled_length = min_size[s->type-1]; | ||
344 : | suxen_drol | 1030 | target -= s->scaled_length; |
345 : | pass1_length -= s->length; | ||
346 : | }else{ | ||
347 : | s->scaled_length = 0; | ||
348 : | } | ||
349 : | } | ||
350 : | } | ||
351 : | |||
352 : | suxen_drol | 1032 | scaler = (double)target / (double)pass1_length; |
353 : | if (target <= 0 || pass1_length <= 0 || target >= pass1_length) { | ||
354 : | DPRINTF(XVID_DEBUG_RC,"undersize warning\n"); | ||
355 : | scaler = 1.0; | ||
356 : | suxen_drol | 1030 | } |
357 : | |||
358 : | suxen_drol | 1032 | DPRINTF(XVID_DEBUG_RC, "target=%i, tot_length=%i, scaler=%f\n", (int)target, (int)pass1_length, scaler); |
359 : | suxen_drol | 1030 | |
360 : | for (i=0; i<rc->num_frames; i++) { | ||
361 : | stat_t * s = &rc->stats[i]; | ||
362 : | |||
363 : | if (s->scaled_length==0) { /* ignore frame with forced frame sizes */ | ||
364 : | s->scaled_length = (int)((double)s->length * scaler * s->weight / rc->avg_weight); | ||
365 : | } | ||
366 : | } | ||
367 : | } | ||
368 : | |||
369 : | |||
370 : | |||
371 : | |||
372 : | suxen_drol | 977 | void pre_process1(rc_2pass2_t * rc) |
373 : | { | ||
374 : | int i; | ||
375 : | double total1, total2; | ||
376 : | uint64_t ivop_boost_total; | ||
377 : | |||
378 : | ivop_boost_total = 0; | ||
379 : | rc->curve_comp_error = 0; | ||
380 : | |||
381 : | for (i=0; i<3; i++) { | ||
382 : | rc->tot_scaled_length[i] = 0; | ||
383 : | } | ||
384 : | |||
385 : | for (i=0; i<rc->num_frames; i++) { | ||
386 : | stat_t * s = &rc->stats[i]; | ||
387 : | |||
388 : | rc->tot_scaled_length[s->type-1] += s->scaled_length; | ||
389 : | |||
390 : | if (s->type == XVID_TYPE_IVOP) { | ||
391 : | ivop_boost_total += s->scaled_length * rc->param.keyframe_boost / 100; | ||
392 : | } | ||
393 : | } | ||
394 : | |||
395 : | suxen_drol | 942 | rc->movie_curve = ((double)(rc->tot_scaled_length[XVID_TYPE_PVOP-1] + rc->tot_scaled_length[XVID_TYPE_BVOP-1] + ivop_boost_total) / |
396 : | (rc->tot_scaled_length[XVID_TYPE_PVOP-1] + rc->tot_scaled_length[XVID_TYPE_BVOP-1])); | ||
397 : | |||
398 : | for(i=0; i<3; i++) { | ||
399 : | if (rc->count[i] == 0 || rc->movie_curve == 0) { | ||
400 : | rc->avg_length[i] = 1; | ||
401 : | }else{ | ||
402 : | rc->avg_length[i] = rc->tot_scaled_length[i] / rc->count[i] / rc->movie_curve; | ||
403 : | } | ||
404 : | } | ||
405 : | |||
406 : | /* alt curve stuff here */ | ||
407 : | |||
408 : | if (rc->param.use_alt_curve) { | ||
409 : | const double avg_pvop = rc->avg_length[XVID_TYPE_PVOP-1]; | ||
410 : | const uint64_t tot_pvop = rc->tot_length[XVID_TYPE_PVOP-1]; | ||
411 : | const uint64_t tot_bvop = rc->tot_length[XVID_TYPE_BVOP-1]; | ||
412 : | const uint64_t tot_scaled_pvop = rc->tot_scaled_length[XVID_TYPE_PVOP-1]; | ||
413 : | const uint64_t tot_scaled_bvop = rc->tot_scaled_length[XVID_TYPE_BVOP-1]; | ||
414 : | |||
415 : | rc->alt_curve_low = avg_pvop - avg_pvop * (double)rc->param.alt_curve_low_dist / 100.0; | ||
416 : | rc->alt_curve_low_diff = avg_pvop - rc->alt_curve_low; | ||
417 : | rc->alt_curve_high = avg_pvop + avg_pvop * (double)rc->param.alt_curve_high_dist / 100.0; | ||
418 : | rc->alt_curve_high_diff = rc->alt_curve_high - avg_pvop; | ||
419 : | |||
420 : | if (rc->param.alt_curve_use_auto) { | ||
421 : | if (tot_bvop + tot_pvop > tot_scaled_bvop + tot_scaled_pvop) { | ||
422 : | rc->param.alt_curve_min_rel_qual = (int)(100.0 - (100.0 - 100.0 / | ||
423 : | ((double)(tot_pvop + tot_bvop) / (double)(tot_scaled_pvop + tot_scaled_bvop))) * (double)rc->param.alt_curve_auto_str / 100.0); | ||
424 : | |||
425 : | if (rc->param.alt_curve_min_rel_qual < 20) | ||
426 : | rc->param.alt_curve_min_rel_qual = 20; | ||
427 : | }else{ | ||
428 : | rc->param.alt_curve_min_rel_qual = 100; | ||
429 : | } | ||
430 : | } | ||
431 : | rc->alt_curve_mid_qual = (1.0 + (double)rc->param.alt_curve_min_rel_qual / 100.0) / 2.0; | ||
432 : | rc->alt_curve_qual_dev = 1.0 - rc->alt_curve_mid_qual; | ||
433 : | |||
434 : | if (rc->param.alt_curve_low_dist > 100) { | ||
435 : | switch(rc->param.alt_curve_type) { | ||
436 : | case XVID_CURVE_SINE: // Sine Curve (high aggressiveness) | ||
437 : | rc->alt_curve_qual_dev *= 2.0 / (1.0 + sin(DEG2RAD * (avg_pvop * 90.0 / rc->alt_curve_low_diff))); | ||
438 : | rc->alt_curve_mid_qual = 1.0 - rc->alt_curve_qual_dev * sin(DEG2RAD * (avg_pvop * 90.0 / rc->alt_curve_low_diff)); | ||
439 : | break; | ||
440 : | case XVID_CURVE_LINEAR: // Linear (medium aggressiveness) | ||
441 : | rc->alt_curve_qual_dev *= 2.0 / (1.0 + avg_pvop / rc->alt_curve_low_diff); | ||
442 : | rc->alt_curve_mid_qual = 1.0 - rc->alt_curve_qual_dev * avg_pvop / rc->alt_curve_low_diff; | ||
443 : | break; | ||
444 : | case XVID_CURVE_COSINE: // Cosine Curve (low aggressiveness) | ||
445 : | rc->alt_curve_qual_dev *= 2.0 / (1.0 + (1.0 - cos(DEG2RAD * (avg_pvop * 90.0 / rc->alt_curve_low_diff)))); | ||
446 : | rc->alt_curve_mid_qual = 1.0 - rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * (avg_pvop * 90.0 / rc->alt_curve_low_diff))); | ||
447 : | } | ||
448 : | } | ||
449 : | } | ||
450 : | /* --- */ | ||
451 : | |||
452 : | |||
453 : | total1=total2=0; | ||
454 : | suxen_drol | 977 | for (i=0; i<rc->num_frames; i++) { |
455 : | suxen_drol | 942 | stat_t * s = &rc->stats[i]; |
456 : | |||
457 : | if (s->type != XVID_TYPE_IVOP) { | ||
458 : | double dbytes,dbytes2; | ||
459 : | |||
460 : | dbytes = s->scaled_length / rc->movie_curve; | ||
461 : | dbytes2 = 0; /* XXX: warning */ | ||
462 : | total1 += dbytes; | ||
463 : | if (s->type == XVID_TYPE_BVOP) | ||
464 : | dbytes *= rc->avg_length[XVID_TYPE_PVOP-1] / rc->avg_length[XVID_TYPE_BVOP-1]; | ||
465 : | |||
466 : | if (rc->param.use_alt_curve) { | ||
467 : | if (dbytes > rc->avg_length[XVID_TYPE_PVOP-1]) { | ||
468 : | |||
469 : | if (dbytes >= rc->alt_curve_high) { | ||
470 : | dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev); | ||
471 : | }else{ | ||
472 : | switch(rc->param.alt_curve_type) { | ||
473 : | case XVID_CURVE_SINE : | ||
474 : | dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * sin(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_high_diff))); | ||
475 : | break; | ||
476 : | case XVID_CURVE_LINEAR : | ||
477 : | dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) / rc->alt_curve_high_diff); | ||
478 : | break; | ||
479 : | case XVID_CURVE_COSINE : | ||
480 : | dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_high_diff)))); | ||
481 : | } | ||
482 : | } | ||
483 : | }else{ | ||
484 : | if (dbytes <= rc->alt_curve_low) { | ||
485 : | dbytes2 = dbytes; | ||
486 : | }else{ | ||
487 : | switch(rc->param.alt_curve_type) { | ||
488 : | case XVID_CURVE_SINE : | ||
489 : | dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * sin(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_low_diff))); | ||
490 : | break; | ||
491 : | case XVID_CURVE_LINEAR : | ||
492 : | dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) / rc->alt_curve_low_diff); | ||
493 : | break; | ||
494 : | case XVID_CURVE_COSINE : | ||
495 : | dbytes2 = dbytes * (rc->alt_curve_mid_qual + rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_low_diff)))); | ||
496 : | } | ||
497 : | } | ||
498 : | |||
499 : | } | ||
500 : | |||
501 : | |||
502 : | }else{ | ||
503 : | if (dbytes > rc->avg_length[XVID_TYPE_PVOP-1]) { | ||
504 : | dbytes2=((double)dbytes + (rc->avg_length[XVID_TYPE_PVOP-1] - dbytes) * rc->param.curve_compression_high / 100.0); | ||
505 : | }else{ | ||
506 : | dbytes2 = ((double)dbytes + (rc->avg_length[XVID_TYPE_PVOP-1] - dbytes) * rc->param.curve_compression_low / 100.0); | ||
507 : | } | ||
508 : | } | ||
509 : | |||
510 : | if (s->type == XVID_TYPE_BVOP) { | ||
511 : | dbytes2 *= rc->avg_length[XVID_TYPE_BVOP-1] / rc->avg_length[XVID_TYPE_PVOP-1]; | ||
512 : | if (dbytes2 < rc->min_length[XVID_TYPE_BVOP-1]) | ||
513 : | dbytes2 = rc->min_length[XVID_TYPE_BVOP-1]; | ||
514 : | }else{ | ||
515 : | if (dbytes2 < rc->min_length[XVID_TYPE_PVOP-1]) | ||
516 : | dbytes2 = rc->min_length[XVID_TYPE_PVOP-1]; | ||
517 : | } | ||
518 : | total2 += dbytes2; | ||
519 : | } | ||
520 : | } | ||
521 : | |||
522 : | rc->curve_comp_scale = total1 / total2; | ||
523 : | |||
524 : | if (!rc->param.use_alt_curve) { | ||
525 : | suxen_drol | 1032 | DPRINTF(XVID_DEBUG_RC, "middle frame size for asymmetric curve compression: %i\n", |
526 : | suxen_drol | 942 | (int)(rc->avg_length[XVID_TYPE_PVOP-1] * rc->curve_comp_scale)); |
527 : | } | ||
528 : | |||
529 : | if (rc->param.use_alt_curve) { | ||
530 : | int bonus_bias = rc->param.alt_curve_bonus_bias; | ||
531 : | int oldquant = 1; | ||
532 : | |||
533 : | if (rc->param.alt_curve_use_auto_bonus_bias) | ||
534 : | bonus_bias = rc->param.alt_curve_min_rel_qual; | ||
535 : | |||
536 : | rc->alt_curve_curve_bias_bonus = (total1 - total2) * (double)bonus_bias / 100.0 / (double)(rc->num_frames /* - credits_frames */ - rc->num_keyframes); | ||
537 : | rc->curve_comp_scale = ((total1 - total2) * (1.0 - (double)bonus_bias / 100.0) + total2) / total2; | ||
538 : | |||
539 : | |||
540 : | /* special info for alt curve: bias bonus and quantizer thresholds */ | ||
541 : | |||
542 : | suxen_drol | 1032 | DPRINTF(XVID_DEBUG_RC, "avg scaled framesize:%i", (int)rc->avg_length[XVID_TYPE_PVOP-1]); |
543 : | DPRINTF(XVID_DEBUG_RC, "bias bonus:%i bytes", (int)rc->alt_curve_curve_bias_bonus); | ||
544 : | suxen_drol | 942 | |
545 : | for (i=1; i <= (int)(rc->alt_curve_high*2)+1; i++) { | ||
546 : | double curve_temp, dbytes; | ||
547 : | int newquant; | ||
548 : | |||
549 : | dbytes = i; | ||
550 : | if (dbytes > rc->avg_length[XVID_TYPE_PVOP-1]) { | ||
551 : | if (dbytes >= rc->alt_curve_high) { | ||
552 : | curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev); | ||
553 : | }else{ | ||
554 : | switch(rc->param.alt_curve_type) | ||
555 : | { | ||
556 : | case XVID_CURVE_SINE : | ||
557 : | curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * sin(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_high_diff))); | ||
558 : | break; | ||
559 : | case XVID_CURVE_LINEAR : | ||
560 : | curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) / rc->alt_curve_high_diff); | ||
561 : | break; | ||
562 : | case XVID_CURVE_COSINE : | ||
563 : | curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_high_diff)))); | ||
564 : | } | ||
565 : | } | ||
566 : | }else{ | ||
567 : | if (dbytes <= rc->alt_curve_low) { | ||
568 : | curve_temp = dbytes; | ||
569 : | }else{ | ||
570 : | switch(rc->param.alt_curve_type) | ||
571 : | { | ||
572 : | case XVID_CURVE_SINE : | ||
573 : | curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * sin(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_low_diff))); | ||
574 : | break; | ||
575 : | case XVID_CURVE_LINEAR : | ||
576 : | curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) / rc->alt_curve_low_diff); | ||
577 : | break; | ||
578 : | case XVID_CURVE_COSINE : | ||
579 : | curve_temp = dbytes * (rc->alt_curve_mid_qual + rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_low_diff)))); | ||
580 : | } | ||
581 : | } | ||
582 : | } | ||
583 : | |||
584 : | if (rc->movie_curve > 1.0) | ||
585 : | dbytes *= rc->movie_curve; | ||
586 : | |||
587 : | newquant = (int)(dbytes * 2.0 / (curve_temp * rc->curve_comp_scale + rc->alt_curve_curve_bias_bonus)); | ||
588 : | if (newquant > 1) { | ||
589 : | if (newquant != oldquant) { | ||
590 : | int percent = (int)((i - rc->avg_length[XVID_TYPE_PVOP-1]) * 100.0 / rc->avg_length[XVID_TYPE_PVOP-1]); | ||
591 : | oldquant = newquant; | ||
592 : | suxen_drol | 1032 | DPRINTF(XVID_DEBUG_RC, "quant:%i threshold at %i : %i percent", newquant, i, percent); |
593 : | suxen_drol | 942 | } |
594 : | } | ||
595 : | } | ||
596 : | |||
597 : | } | ||
598 : | |||
599 : | rc->overflow = 0; | ||
600 : | rc->KFoverflow = 0; | ||
601 : | rc->KFoverflow_partial = 0; | ||
602 : | rc->KF_idx = 1; | ||
603 : | } | ||
604 : | |||
605 : | |||
606 : | |||
607 : | |||
608 : | static int rc_2pass2_create(xvid_plg_create_t * create, rc_2pass2_t ** handle) | ||
609 : | { | ||
610 : | xvid_plugin_2pass2_t * param = (xvid_plugin_2pass2_t *)create->param; | ||
611 : | rc_2pass2_t * rc; | ||
612 : | suxen_drol | 1030 | int i; |
613 : | suxen_drol | 942 | |
614 : | rc = malloc(sizeof(rc_2pass2_t)); | ||
615 : | if (rc == NULL) | ||
616 : | return XVID_ERR_MEMORY; | ||
617 : | |||
618 : | rc->param = *param; | ||
619 : | |||
620 : | if (rc->param.keyframe_boost <= 0) rc->param.keyframe_boost = 0; | ||
621 : | if (rc->param.payback_method <= 0) rc->param.payback_method = XVID_PAYBACK_PROP; | ||
622 : | if (rc->param.bitrate_payback_delay <= 0) rc->param.bitrate_payback_delay = 250; | ||
623 : | if (rc->param.curve_compression_high <= 0) rc->param.curve_compression_high = 0; | ||
624 : | if (rc->param.curve_compression_low <= 0) rc->param.curve_compression_low = 0; | ||
625 : | if (rc->param.max_overflow_improvement <= 0) rc->param.max_overflow_improvement = 60; | ||
626 : | if (rc->param.max_overflow_degradation <= 0) rc->param.max_overflow_degradation = 60; | ||
627 : | |||
628 : | if (rc->param.use_alt_curve <= 0) rc->param.use_alt_curve = 0; | ||
629 : | if (rc->param.alt_curve_high_dist <= 0) rc->param.alt_curve_high_dist = 500; | ||
630 : | if (rc->param.alt_curve_low_dist <= 0) rc->param.alt_curve_low_dist = 90; | ||
631 : | if (rc->param.alt_curve_use_auto <= 0) rc->param.alt_curve_use_auto = 1; | ||
632 : | if (rc->param.alt_curve_auto_str <= 0) rc->param.alt_curve_auto_str = 30; | ||
633 : | if (rc->param.alt_curve_type <= 0) rc->param.alt_curve_type = XVID_CURVE_LINEAR; | ||
634 : | if (rc->param.alt_curve_min_rel_qual <= 0) rc->param.alt_curve_min_rel_qual = 50; | ||
635 : | if (rc->param.alt_curve_use_auto_bonus_bias <= 0) rc->param.alt_curve_use_auto_bonus_bias = 1; | ||
636 : | if (rc->param.alt_curve_bonus_bias <= 0) rc->param.alt_curve_bonus_bias = 50; | ||
637 : | |||
638 : | if (rc->param.kftreshold <= 0) rc->param.kftreshold = 10; | ||
639 : | if (rc->param.kfreduction <= 0) rc->param.kfreduction = 20; | ||
640 : | if (rc->param.min_key_interval <= 0) rc->param.min_key_interval = 300; | ||
641 : | |||
642 : | suxen_drol | 977 | if (!det_stats_length(rc, param->filename)){ |
643 : | suxen_drol | 1032 | DPRINTF(XVID_DEBUG_RC,"fopen %s failed\n", param->filename); |
644 : | suxen_drol | 942 | free(rc); |
645 : | return XVID_ERR_FAIL; | ||
646 : | } | ||
647 : | |||
648 : | if ((rc->stats = malloc(rc->num_frames * sizeof(stat_t))) == NULL) { | ||
649 : | free(rc); | ||
650 : | return XVID_ERR_MEMORY; | ||
651 : | } | ||
652 : | |||
653 : | edgomez | 1037 | /* |
654 : | * We need an extra location because we do as if the last frame were an | ||
655 : | * IFrame. This is needed because our code consider that frames between | ||
656 : | * 2 IFrames form a natural sequence. So we store last frame as a | ||
657 : | * keyframe location. | ||
658 : | */ | ||
659 : | suxen_drol | 942 | if ((rc->keyframe_locations = malloc((rc->num_keyframes + 1) * sizeof(int))) == NULL) { |
660 : | free(rc->stats); | ||
661 : | free(rc); | ||
662 : | return XVID_ERR_MEMORY; | ||
663 : | } | ||
664 : | |||
665 : | suxen_drol | 977 | if (!load_stats(rc, param->filename)) { |
666 : | suxen_drol | 1032 | DPRINTF(XVID_DEBUG_RC,"fopen %s failed\n", param->filename); |
667 : | suxen_drol | 942 | free(rc->keyframe_locations); |
668 : | free(rc->stats); | ||
669 : | free(rc); | ||
670 : | return XVID_ERR_FAIL; | ||
671 : | } | ||
672 : | |||
673 : | /* pre-process our stats */ | ||
674 : | suxen_drol | 977 | |
675 : | suxen_drol | 1030 | if (rc->num_frames < create->fbase/create->fincr) { |
676 : | rc->target = rc->param.bitrate / 8; /* one second */ | ||
677 : | }else{ | ||
678 : | rc->target = (rc->param.bitrate * rc->num_frames * create->fincr) / (create->fbase * 8); | ||
679 : | suxen_drol | 977 | } |
680 : | suxen_drol | 1030 | |
681 : | suxen_drol | 1032 | DPRINTF(XVID_DEBUG_RC, "rc->target : %i\n", rc->target); |
682 : | |||
683 : | edgomez | 1037 | #if 0 |
684 : | suxen_drol | 1030 | rc->target -= rc->num_frames*24; /* avi file header */ |
685 : | edgomez | 1037 | #endif |
686 : | suxen_drol | 942 | |
687 : | suxen_drol | 977 | |
688 : | pre_process0(rc); | ||
689 : | edgomez | 1036 | |
690 : | suxen_drol | 977 | if (rc->param.bitrate) { |
691 : | suxen_drol | 1030 | zone_process(rc, create); |
692 : | suxen_drol | 977 | internal_scale(rc); |
693 : | suxen_drol | 1030 | }else{ |
694 : | /* external scaler: ignore zone */ | ||
695 : | for (i=0;i<rc->num_frames;i++) { | ||
696 : | rc->stats[i].zone_mode = XVID_ZONE_WEIGHT; | ||
697 : | rc->stats[i].weight = 1.0; | ||
698 : | } | ||
699 : | rc->avg_weight = 1.0; | ||
700 : | rc->tot_quant = 0; | ||
701 : | } | ||
702 : | pre_process1(rc); | ||
703 : | |||
704 : | for (i=0; i<32;i++) { | ||
705 : | rc->pquant_error[i] = 0; | ||
706 : | rc->bquant_error[i] = 0; | ||
707 : | rc->quant_count[i] = 0; | ||
708 : | } | ||
709 : | |||
710 : | rc->fq_error = 0; | ||
711 : | suxen_drol | 977 | |
712 : | suxen_drol | 942 | *handle = rc; |
713 : | return(0); | ||
714 : | } | ||
715 : | |||
716 : | |||
717 : | static int rc_2pass2_destroy(rc_2pass2_t * rc, xvid_plg_destroy_t * destroy) | ||
718 : | { | ||
719 : | free(rc->keyframe_locations); | ||
720 : | free(rc->stats); | ||
721 : | free(rc); | ||
722 : | return(0); | ||
723 : | } | ||
724 : | |||
725 : | |||
726 : | |||
727 : | static int rc_2pass2_before(rc_2pass2_t * rc, xvid_plg_data_t * data) | ||
728 : | { | ||
729 : | stat_t * s = &rc->stats[data->frame_num]; | ||
730 : | int overflow; | ||
731 : | int desired; | ||
732 : | double dbytes; | ||
733 : | double curve_temp; | ||
734 : | int capped_to_max_framesize = 0; | ||
735 : | |||
736 : | edgomez | 1037 | /* |
737 : | * This function is quite long but easy to understand. In order to simplify | ||
738 : | * the code path (a bit), we treat 3 cases that can return immediatly. | ||
739 : | */ | ||
740 : | suxen_drol | 942 | |
741 : | edgomez | 1037 | /* First case: Another plugin has already set a quantizer */ |
742 : | if (data->quant > 0) | ||
743 : | return(0); | ||
744 : | suxen_drol | 942 | |
745 : | edgomez | 1037 | /* Second case: We are in a Quant zone */ |
746 : | if (s->zone_mode == XVID_ZONE_QUANT) { | ||
747 : | suxen_drol | 942 | |
748 : | edgomez | 1037 | rc->fq_error += s->weight; |
749 : | data->quant = (int)rc->fq_error; | ||
750 : | rc->fq_error -= data->quant; | ||
751 : | |||
752 : | s->desired_length = s->length; | ||
753 : | suxen_drol | 1032 | |
754 : | edgomez | 1037 | return(0); |
755 : | suxen_drol | 942 | |
756 : | edgomez | 1037 | } |
757 : | suxen_drol | 977 | |
758 : | edgomez | 1037 | /* Third case: insufficent stats data */ |
759 : | if (data->frame_num >= rc->num_frames) | ||
760 : | return 0; | ||
761 : | suxen_drol | 942 | |
762 : | edgomez | 1037 | /* |
763 : | * The last case is the one every normal minded developer should fear to | ||
764 : | * maintain in a project :-) | ||
765 : | */ | ||
766 : | suxen_drol | 942 | |
767 : | edgomez | 1037 | /* XXX: why by 8 */ |
768 : | overflow = rc->overflow / 8; | ||
769 : | suxen_drol | 942 | |
770 : | edgomez | 1037 | /* |
771 : | * The rc->overflow field represents the overflow in current scene (between two | ||
772 : | * IFrames) so we must not forget to reset it if we are enetring a new scene | ||
773 : | */ | ||
774 : | if (s->type == XVID_TYPE_IVOP) { | ||
775 : | overflow = 0; | ||
776 : | } | ||
777 : | suxen_drol | 942 | |
778 : | edgomez | 1037 | desired = s->scaled_length; |
779 : | suxen_drol | 942 | |
780 : | edgomez | 1037 | dbytes = desired; |
781 : | if (s->type == XVID_TYPE_IVOP) { | ||
782 : | dbytes += desired * rc->param.keyframe_boost / 100; | ||
783 : | } | ||
784 : | dbytes /= rc->movie_curve; | ||
785 : | suxen_drol | 942 | |
786 : | edgomez | 1037 | /* |
787 : | * We are now entering in the hard part of the algo, it was first designed | ||
788 : | * to work with i/pframes only streams, so the way it computes things is | ||
789 : | * adapted to pframes only. However we can use it if we just take care to | ||
790 : | * scale the bframes sizes to pframes sizes using the ratio avg_p/avg_p and | ||
791 : | * then before really using values depending on frame sizes, scaling the | ||
792 : | * value again with the inverse ratio | ||
793 : | */ | ||
794 : | if (s->type == XVID_TYPE_BVOP) { | ||
795 : | dbytes *= rc->avg_length[XVID_TYPE_PVOP-1] / rc->avg_length[XVID_TYPE_BVOP-1]; | ||
796 : | } | ||
797 : | suxen_drol | 942 | |
798 : | edgomez | 1037 | /* |
799 : | * Apply user's choosen Payback method. Payback helps bitrate to follow the | ||
800 : | * scaled curve "paying back" past errors in curve previsions. | ||
801 : | */ | ||
802 : | if (rc->param.payback_method == XVID_PAYBACK_BIAS) { | ||
803 : | desired =(int)(rc->curve_comp_error / rc->param.bitrate_payback_delay); | ||
804 : | }else{ | ||
805 : | desired = (int)(rc->curve_comp_error * dbytes / | ||
806 : | rc->avg_length[XVID_TYPE_PVOP-1] / rc->param.bitrate_payback_delay); | ||
807 : | suxen_drol | 942 | |
808 : | edgomez | 1037 | if (labs(desired) > fabs(rc->curve_comp_error)) { |
809 : | desired = (int)rc->curve_comp_error; | ||
810 : | } | ||
811 : | } | ||
812 : | suxen_drol | 942 | |
813 : | edgomez | 1037 | rc->curve_comp_error -= desired; |
814 : | suxen_drol | 942 | |
815 : | edgomez | 1037 | /* |
816 : | * Alt curve treatment is not that hard to understand though the formulas | ||
817 : | * seem to be huge. Alt treatment is basically a way to soft/harden the | ||
818 : | * curve flux applying sine/linear/cosine ratios | ||
819 : | */ | ||
820 : | suxen_drol | 942 | |
821 : | edgomez | 1037 | /* XXX: warning */ |
822 : | curve_temp = 0; | ||
823 : | suxen_drol | 942 | |
824 : | edgomez | 1037 | if (rc->param.use_alt_curve) { |
825 : | if (s->type != XVID_TYPE_IVOP) { | ||
826 : | if (dbytes > rc->avg_length[XVID_TYPE_PVOP-1]) { | ||
827 : | if (dbytes >= rc->alt_curve_high) { | ||
828 : | curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev); | ||
829 : | } else { | ||
830 : | switch(rc->param.alt_curve_type) { | ||
831 : | case XVID_CURVE_SINE : | ||
832 : | curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * sin(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_high_diff))); | ||
833 : | break; | ||
834 : | case XVID_CURVE_LINEAR : | ||
835 : | curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) / rc->alt_curve_high_diff); | ||
836 : | break; | ||
837 : | case XVID_CURVE_COSINE : | ||
838 : | curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_high_diff)))); | ||
839 : | } | ||
840 : | } | ||
841 : | } else { | ||
842 : | if (dbytes <= rc->alt_curve_low){ | ||
843 : | curve_temp = dbytes; | ||
844 : | } else { | ||
845 : | switch(rc->param.alt_curve_type) { | ||
846 : | case XVID_CURVE_SINE : | ||
847 : | curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * sin(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_low_diff))); | ||
848 : | break; | ||
849 : | case XVID_CURVE_LINEAR : | ||
850 : | curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) / rc->alt_curve_low_diff); | ||
851 : | break; | ||
852 : | case XVID_CURVE_COSINE : | ||
853 : | curve_temp = dbytes * (rc->alt_curve_mid_qual + rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_low_diff)))); | ||
854 : | } | ||
855 : | } | ||
856 : | } | ||
857 : | suxen_drol | 942 | |
858 : | edgomez | 1037 | /* |
859 : | * End of code path for curve_temp, as told earlier, we are now | ||
860 : | * obliged to scale the value to a bframe one using the inverse | ||
861 : | * ratio applied earlier | ||
862 : | */ | ||
863 : | if (s->type == XVID_TYPE_BVOP) | ||
864 : | curve_temp *= rc->avg_length[XVID_TYPE_BVOP-1] / rc->avg_length[XVID_TYPE_PVOP-1]; | ||
865 : | suxen_drol | 942 | |
866 : | edgomez | 1037 | curve_temp = curve_temp * rc->curve_comp_scale + rc->alt_curve_curve_bias_bonus; |
867 : | suxen_drol | 942 | |
868 : | edgomez | 1037 | desired += ((int)curve_temp); |
869 : | rc->curve_comp_error += curve_temp - (int)curve_temp; | ||
870 : | } else { | ||
871 : | /* | ||
872 : | * End of code path for dbytes, as told earlier, we are now | ||
873 : | * obliged to scale the value to a bframe one using the inverse | ||
874 : | * ratio applied earlier | ||
875 : | */ | ||
876 : | if (s->type == XVID_TYPE_BVOP) | ||
877 : | dbytes *= rc->avg_length[XVID_TYPE_BVOP-1] / rc->avg_length[XVID_TYPE_PVOP-1]; | ||
878 : | suxen_drol | 1030 | |
879 : | edgomez | 1037 | desired += ((int)dbytes); |
880 : | rc->curve_comp_error += dbytes - (int)dbytes; | ||
881 : | } | ||
882 : | suxen_drol | 1030 | |
883 : | edgomez | 1037 | } else if ((rc->param.curve_compression_high + rc->param.curve_compression_low) && s->type != XVID_TYPE_IVOP) { |
884 : | suxen_drol | 1030 | |
885 : | edgomez | 1037 | curve_temp = rc->curve_comp_scale; |
886 : | if (dbytes > rc->avg_length[XVID_TYPE_PVOP-1]) { | ||
887 : | curve_temp *= ((double)dbytes + (rc->avg_length[XVID_TYPE_PVOP-1] - dbytes) * rc->param.curve_compression_high / 100.0); | ||
888 : | } else { | ||
889 : | curve_temp *= ((double)dbytes + (rc->avg_length[XVID_TYPE_PVOP-1] - dbytes) * rc->param.curve_compression_low / 100.0); | ||
890 : | } | ||
891 : | suxen_drol | 942 | |
892 : | edgomez | 1037 | /* |
893 : | * End of code path for curve_temp, as told earlier, we are now | ||
894 : | * obliged to scale the value to a bframe one using the inverse | ||
895 : | * ratio applied earlier | ||
896 : | */ | ||
897 : | if (s->type == XVID_TYPE_BVOP) | ||
898 : | curve_temp *= rc->avg_length[XVID_TYPE_BVOP-1] / rc->avg_length[XVID_TYPE_PVOP-1]; | ||
899 : | suxen_drol | 1032 | |
900 : | edgomez | 1037 | desired += (int)curve_temp; |
901 : | rc->curve_comp_error += curve_temp - (int)curve_temp; | ||
902 : | } else { | ||
903 : | /* | ||
904 : | * End of code path for dbytes, as told earlier, we are now | ||
905 : | * obliged to scale the value to a bframe one using the inverse | ||
906 : | * ratio applied earlier | ||
907 : | */ | ||
908 : | if (s->type == XVID_TYPE_BVOP){ | ||
909 : | dbytes *= rc->avg_length[XVID_TYPE_BVOP-1] / rc->avg_length[XVID_TYPE_PVOP-1]; | ||
910 : | } | ||
911 : | suxen_drol | 942 | |
912 : | edgomez | 1037 | desired += (int)dbytes; |
913 : | rc->curve_comp_error += dbytes - (int)dbytes; | ||
914 : | } | ||
915 : | suxen_drol | 942 | |
916 : | |||
917 : | edgomez | 1037 | /* |
918 : | * We can't do bigger frames than first pass, this would be stupid as first | ||
919 : | * pass is quant=2 and that reaching quant=1 is not worth it. We would lose | ||
920 : | * many bytes and we would not not gain much quality. | ||
921 : | */ | ||
922 : | if (desired > s->length) { | ||
923 : | rc->curve_comp_error += desired - s->length; | ||
924 : | desired = s->length; | ||
925 : | }else{ | ||
926 : | if (desired < rc->min_length[s->type-1]) { | ||
927 : | if (s->type == XVID_TYPE_IVOP){ | ||
928 : | rc->curve_comp_error -= rc->min_length[XVID_TYPE_IVOP-1] - desired; | ||
929 : | } | ||
930 : | desired = rc->min_length[s->type-1]; | ||
931 : | } | ||
932 : | } | ||
933 : | suxen_drol | 942 | |
934 : | edgomez | 1037 | s->desired_length = desired; |
935 : | suxen_drol | 942 | |
936 : | edgomez | 1037 | |
937 : | /* if this keyframe is too close to the next, reduce it's byte allotment | ||
938 : | XXX: why do we do this after setting the desired length */ | ||
939 : | suxen_drol | 942 | |
940 : | edgomez | 1037 | if (s->type == XVID_TYPE_IVOP) { |
941 : | int KFdistance = rc->keyframe_locations[rc->KF_idx] - rc->keyframe_locations[rc->KF_idx - 1]; | ||
942 : | suxen_drol | 942 | |
943 : | edgomez | 1037 | if (KFdistance < rc->param.kftreshold) { |
944 : | |||
945 : | KFdistance = KFdistance - rc->param.min_key_interval; | ||
946 : | suxen_drol | 942 | |
947 : | edgomez | 1037 | if (KFdistance >= 0) { |
948 : | int KF_min_size; | ||
949 : | suxen_drol | 942 | |
950 : | edgomez | 1037 | KF_min_size = desired * (100 - rc->param.kfreduction) / 100; |
951 : | if (KF_min_size < 1) | ||
952 : | KF_min_size = 1; | ||
953 : | suxen_drol | 942 | |
954 : | edgomez | 1037 | desired = KF_min_size + (desired - KF_min_size) * KFdistance / |
955 : | (rc->param.kftreshold - rc->param.min_key_interval); | ||
956 : | suxen_drol | 942 | |
957 : | edgomez | 1037 | if (desired < 1) |
958 : | desired = 1; | ||
959 : | } | ||
960 : | } | ||
961 : | } | ||
962 : | suxen_drol | 942 | |
963 : | edgomez | 1037 | overflow = (int)((double)overflow * desired / rc->avg_length[XVID_TYPE_PVOP-1]); |
964 : | suxen_drol | 942 | |
965 : | edgomez | 1037 | /* Reign in overflow with huge frames */ |
966 : | if (labs(overflow) > labs(rc->overflow)) { | ||
967 : | overflow = rc->overflow; | ||
968 : | } | ||
969 : | suxen_drol | 942 | |
970 : | edgomez | 1037 | /* Make sure overflow doesn't run away */ |
971 : | if (overflow > desired * rc->param.max_overflow_improvement / 100) { | ||
972 : | desired += (overflow <= desired) ? desired * rc->param.max_overflow_improvement / 100 : | ||
973 : | overflow * rc->param.max_overflow_improvement / 100; | ||
974 : | } else if (overflow < desired * rc->param.max_overflow_degradation / -100){ | ||
975 : | desired += desired * rc->param.max_overflow_degradation / -100; | ||
976 : | } else { | ||
977 : | desired += overflow; | ||
978 : | } | ||
979 : | suxen_drol | 942 | |
980 : | edgomez | 1037 | /* Make sure we are not higher than desired frame size */ |
981 : | if (desired > rc->max_length) { | ||
982 : | capped_to_max_framesize = 1; | ||
983 : | desired = rc->max_length; | ||
984 : | } | ||
985 : | suxen_drol | 942 | |
986 : | edgomez | 1037 | /* Make sure to not scale below the minimum framesize */ |
987 : | if (desired < rc->min_length[s->type-1]) | ||
988 : | desired = rc->min_length[s->type-1]; | ||
989 : | suxen_drol | 942 | |
990 : | edgomez | 1037 | /* |
991 : | * Don't laugh at this very 'simple' quant<->filesize relationship, it | ||
992 : | * proves to be acurate enough for our algorithm | ||
993 : | */ | ||
994 : | data->quant= (s->quant * s->length) / desired; | ||
995 : | suxen_drol | 942 | |
996 : | edgomez | 1037 | /* Let's clip the computed quantizer, if needed */ |
997 : | if (data->quant < 1) { | ||
998 : | data->quant = 1; | ||
999 : | } else if (data->quant > 31) { | ||
1000 : | data->quant = 31; | ||
1001 : | } else if (s->type != XVID_TYPE_IVOP) { | ||
1002 : | suxen_drol | 942 | |
1003 : | edgomez | 1037 | /* |
1004 : | * The frame quantizer has not been clipped, this appear to be a good | ||
1005 : | * computed quantizer, however past frames give us some info about how | ||
1006 : | * this quantizer performs against the algo prevision. Let's use this | ||
1007 : | * prevision to increase the quantizer when we observe a too big | ||
1008 : | * accumulated error | ||
1009 : | */ | ||
1010 : | if (s->type== XVID_TYPE_BVOP) { | ||
1011 : | rc->bquant_error[data->quant] += ((double)(s->quant * s->length) / desired) - data->quant; | ||
1012 : | suxen_drol | 942 | |
1013 : | edgomez | 1037 | if (rc->bquant_error[data->quant] >= 1.0) { |
1014 : | rc->bquant_error[data->quant] -= 1.0; | ||
1015 : | data->quant++; | ||
1016 : | } | ||
1017 : | } else { | ||
1018 : | rc->pquant_error[data->quant] += ((double)(s->quant * s->length) / desired) - data->quant; | ||
1019 : | suxen_drol | 942 | |
1020 : | edgomez | 1037 | if (rc->pquant_error[data->quant] >= 1.0) { |
1021 : | rc->pquant_error[data->quant] -= 1.0; | ||
1022 : | ++data->quant; | ||
1023 : | } | ||
1024 : | } | ||
1025 : | } | ||
1026 : | suxen_drol | 942 | |
1027 : | edgomez | 1037 | /* |
1028 : | * Now we have a computed quant that is in the right quante range, with a | ||
1029 : | * possible +1 correction due to cumulated error. We can now safely clip | ||
1030 : | * the quantizer again with user's quant ranges. "Safely" means the Rate | ||
1031 : | * Control could learn more about this quantizer, this knowledge is useful | ||
1032 : | * for future frames even if it this quantizer won't be really used atm, | ||
1033 : | * that's why we don't perform this clipping earlier. | ||
1034 : | */ | ||
1035 : | if (data->quant < data->min_quant[s->type-1]) { | ||
1036 : | data->quant = data->min_quant[s->type-1]; | ||
1037 : | } else if (data->quant > data->max_quant[s->type-1]) { | ||
1038 : | data->quant = data->max_quant[s->type-1]; | ||
1039 : | } | ||
1040 : | suxen_drol | 942 | |
1041 : | edgomez | 1037 | /* |
1042 : | * To avoid big quality jumps from frame to frame, we apply a "security" | ||
1043 : | * rule that makes |last_quant - new_quant| <= 2. This rule only applies | ||
1044 : | * to predicted frames (P and B) | ||
1045 : | */ | ||
1046 : | if (s->type != XVID_TYPE_IVOP && rc->last_quant[s->type-1] && capped_to_max_framesize == 0) { | ||
1047 : | suxen_drol | 942 | |
1048 : | edgomez | 1037 | if (data->quant > rc->last_quant[s->type-1] + 2) { |
1049 : | data->quant = rc->last_quant[s->type-1] + 2; | ||
1050 : | DPRINTF(XVID_DEBUG_RC, "p/b-frame quantizer prevented from rising too steeply"); | ||
1051 : | } | ||
1052 : | if (data->quant < rc->last_quant[s->type-1] - 2) { | ||
1053 : | data->quant = rc->last_quant[s->type-1] - 2; | ||
1054 : | DPRINTF(XVID_DEBUG_RC, "p/b-frame quantizer prevented from falling too steeply"); | ||
1055 : | } | ||
1056 : | } | ||
1057 : | suxen_drol | 1030 | |
1058 : | edgomez | 1037 | /* |
1059 : | * We don't want to pollute the RC history results when our computed quant | ||
1060 : | * has been computed from a capped frame size | ||
1061 : | */ | ||
1062 : | if (capped_to_max_framesize == 0) { | ||
1063 : | rc->last_quant[s->type-1] = data->quant; | ||
1064 : | } | ||
1065 : | suxen_drol | 1030 | |
1066 : | edgomez | 1037 | return 0; |
1067 : | suxen_drol | 942 | } |
1068 : | |||
1069 : | |||
1070 : | |||
1071 : | static int rc_2pass2_after(rc_2pass2_t * rc, xvid_plg_data_t * data) | ||
1072 : | { | ||
1073 : | stat_t * s = &rc->stats[data->frame_num]; | ||
1074 : | |||
1075 : | edgomez | 1037 | /* Insufficent stats data */ |
1076 : | if (data->frame_num >= rc->num_frames) | ||
1077 : | suxen_drol | 942 | return 0; |
1078 : | |||
1079 : | rc->quant_count[data->quant]++; | ||
1080 : | |||
1081 : | if (data->type == XVID_TYPE_IVOP) { | ||
1082 : | int kfdiff = (rc->keyframe_locations[rc->KF_idx] - rc->keyframe_locations[rc->KF_idx - 1]); | ||
1083 : | |||
1084 : | rc->overflow += rc->KFoverflow; | ||
1085 : | rc->KFoverflow = s->desired_length - data->length; | ||
1086 : | |||
1087 : | if (kfdiff > 1) { // non-consecutive keyframes | ||
1088 : | rc->KFoverflow_partial = rc->KFoverflow / (kfdiff - 1); | ||
1089 : | }else{ // consecutive keyframes | ||
1090 : | rc->overflow += rc->KFoverflow; | ||
1091 : | rc->KFoverflow = 0; | ||
1092 : | rc->KFoverflow_partial = 0; | ||
1093 : | } | ||
1094 : | rc->KF_idx++; | ||
1095 : | }else{ | ||
1096 : | // distribute part of the keyframe overflow | ||
1097 : | rc->overflow += s->desired_length - data->length + rc->KFoverflow_partial; | ||
1098 : | rc->KFoverflow -= rc->KFoverflow_partial; | ||
1099 : | } | ||
1100 : | |||
1101 : | suxen_drol | 1032 | DPRINTF(XVID_DEBUG_RC, "[%i] quant:%i stats1:%i scaled:%i actual:%i overflow:%i\n", |
1102 : | suxen_drol | 942 | data->frame_num, |
1103 : | data->quant, | ||
1104 : | s->length, | ||
1105 : | s->scaled_length, | ||
1106 : | data->length, | ||
1107 : | rc->overflow); | ||
1108 : | |||
1109 : | return(0); | ||
1110 : | } | ||
1111 : | |||
1112 : | |||
1113 : | |||
1114 : | int xvid_plugin_2pass2(void * handle, int opt, void * param1, void * param2) | ||
1115 : | { | ||
1116 : | switch(opt) | ||
1117 : | { | ||
1118 : | case XVID_PLG_INFO : | ||
1119 : | return 0; | ||
1120 : | |||
1121 : | case XVID_PLG_CREATE : | ||
1122 : | return rc_2pass2_create((xvid_plg_create_t*)param1, param2); | ||
1123 : | |||
1124 : | case XVID_PLG_DESTROY : | ||
1125 : | return rc_2pass2_destroy((rc_2pass2_t*)handle, (xvid_plg_destroy_t*)param1); | ||
1126 : | |||
1127 : | case XVID_PLG_BEFORE : | ||
1128 : | return rc_2pass2_before((rc_2pass2_t*)handle, (xvid_plg_data_t*)param1); | ||
1129 : | |||
1130 : | case XVID_PLG_AFTER : | ||
1131 : | return rc_2pass2_after((rc_2pass2_t*)handle, (xvid_plg_data_t*)param1); | ||
1132 : | } | ||
1133 : | |||
1134 : | return XVID_ERR_FAIL; | ||
1135 : | } |
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