Directory: | ../../../ffmpeg/ |
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File: | src/libavcodec/ratecontrol.c |
Date: | 2022-07-04 00:18:54 |
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Lines: | 335 | 582 | 57.6% |
Branches: | 152 | 319 | 47.6% |
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1 | /* | ||
2 | * Rate control for video encoders | ||
3 | * | ||
4 | * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> | ||
5 | * | ||
6 | * This file is part of FFmpeg. | ||
7 | * | ||
8 | * FFmpeg is free software; you can redistribute it and/or | ||
9 | * modify it under the terms of the GNU Lesser General Public | ||
10 | * License as published by the Free Software Foundation; either | ||
11 | * version 2.1 of the License, or (at your option) any later version. | ||
12 | * | ||
13 | * FFmpeg is distributed in the hope that it will be useful, | ||
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
16 | * Lesser General Public License for more details. | ||
17 | * | ||
18 | * You should have received a copy of the GNU Lesser General Public | ||
19 | * License along with FFmpeg; if not, write to the Free Software | ||
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
21 | */ | ||
22 | |||
23 | /** | ||
24 | * @file | ||
25 | * Rate control for video encoders. | ||
26 | */ | ||
27 | |||
28 | #include "libavutil/attributes.h" | ||
29 | #include "libavutil/internal.h" | ||
30 | |||
31 | #include "avcodec.h" | ||
32 | #include "ratecontrol.h" | ||
33 | #include "mpegutils.h" | ||
34 | #include "mpegvideoenc.h" | ||
35 | #include "libavutil/eval.h" | ||
36 | |||
37 | ✗ | void ff_write_pass1_stats(MpegEncContext *s) | |
38 | { | ||
39 | ✗ | snprintf(s->avctx->stats_out, 256, | |
40 | "in:%d out:%d type:%d q:%d itex:%d ptex:%d mv:%d misc:%d " | ||
41 | "fcode:%d bcode:%d mc-var:%"PRId64" var:%"PRId64" icount:%d skipcount:%d hbits:%d;\n", | ||
42 | ✗ | s->current_picture_ptr->f->display_picture_number, | |
43 | ✗ | s->current_picture_ptr->f->coded_picture_number, | |
44 | s->pict_type, | ||
45 | ✗ | s->current_picture.f->quality, | |
46 | s->i_tex_bits, | ||
47 | s->p_tex_bits, | ||
48 | s->mv_bits, | ||
49 | s->misc_bits, | ||
50 | s->f_code, | ||
51 | s->b_code, | ||
52 | s->current_picture.mc_mb_var_sum, | ||
53 | s->current_picture.mb_var_sum, | ||
54 | s->i_count, s->skip_count, | ||
55 | s->header_bits); | ||
56 | } | ||
57 | |||
58 | 12057 | static double get_fps(AVCodecContext *avctx) | |
59 | { | ||
60 |
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12057 | return 1.0 / av_q2d(avctx->time_base) / FFMAX(avctx->ticks_per_frame, 1); |
61 | } | ||
62 | |||
63 | ✗ | static inline double qp2bits(RateControlEntry *rce, double qp) | |
64 | { | ||
65 | ✗ | if (qp <= 0.0) { | |
66 | ✗ | av_log(NULL, AV_LOG_ERROR, "qp<=0.0\n"); | |
67 | } | ||
68 | ✗ | return rce->qscale * (double)(rce->i_tex_bits + rce->p_tex_bits + 1) / qp; | |
69 | } | ||
70 | |||
71 | 1796 | static inline double bits2qp(RateControlEntry *rce, double bits) | |
72 | { | ||
73 |
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1796 | if (bits < 0.9) { |
74 | ✗ | av_log(NULL, AV_LOG_ERROR, "bits<0.9\n"); | |
75 | } | ||
76 | 1796 | return rce->qscale * (double)(rce->i_tex_bits + rce->p_tex_bits + 1) / bits; | |
77 | } | ||
78 | |||
79 | 1746 | static double get_diff_limited_q(MpegEncContext *s, RateControlEntry *rce, double q) | |
80 | { | ||
81 | 1746 | RateControlContext *rcc = &s->rc_context; | |
82 | 1746 | AVCodecContext *a = s->avctx; | |
83 | 1746 | const int pict_type = rce->new_pict_type; | |
84 | 1746 | const double last_p_q = rcc->last_qscale_for[AV_PICTURE_TYPE_P]; | |
85 | 1746 | const double last_non_b_q = rcc->last_qscale_for[rcc->last_non_b_pict_type]; | |
86 | |||
87 |
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1746 | if (pict_type == AV_PICTURE_TYPE_I && |
88 |
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363 | (a->i_quant_factor > 0.0 || rcc->last_non_b_pict_type == AV_PICTURE_TYPE_P)) |
89 | 131 | q = last_p_q * FFABS(a->i_quant_factor) + a->i_quant_offset; | |
90 |
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1615 | else if (pict_type == AV_PICTURE_TYPE_B && |
91 |
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768 | a->b_quant_factor > 0.0) |
92 | 768 | q = last_non_b_q * a->b_quant_factor + a->b_quant_offset; | |
93 |
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1746 | if (q < 1) |
94 | ✗ | q = 1; | |
95 | |||
96 | /* last qscale / qdiff stuff */ | ||
97 |
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1746 | if (rcc->last_non_b_pict_type == pict_type || pict_type != AV_PICTURE_TYPE_I) { |
98 | 1580 | double last_q = rcc->last_qscale_for[pict_type]; | |
99 | 1580 | const int maxdiff = FF_QP2LAMBDA * a->max_qdiff; | |
100 | |||
101 |
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1580 | if (q > last_q + maxdiff) |
102 | 355 | q = last_q + maxdiff; | |
103 |
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1225 | else if (q < last_q - maxdiff) |
104 | 66 | q = last_q - maxdiff; | |
105 | } | ||
106 | |||
107 | 1746 | rcc->last_qscale_for[pict_type] = q; // Note we cannot do that after blurring | |
108 | |||
109 |
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1746 | if (pict_type != AV_PICTURE_TYPE_B) |
110 | 978 | rcc->last_non_b_pict_type = pict_type; | |
111 | |||
112 | 1746 | return q; | |
113 | } | ||
114 | |||
115 | /** | ||
116 | * Get the qmin & qmax for pict_type. | ||
117 | */ | ||
118 | 3492 | static void get_qminmax(int *qmin_ret, int *qmax_ret, MpegEncContext *s, int pict_type) | |
119 | { | ||
120 | 3492 | int qmin = s->lmin; | |
121 | 3492 | int qmax = s->lmax; | |
122 | |||
123 |
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3492 | av_assert0(qmin <= qmax); |
124 | |||
125 |
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3492 | switch (pict_type) { |
126 | 1536 | case AV_PICTURE_TYPE_B: | |
127 | 1536 | qmin = (int)(qmin * FFABS(s->avctx->b_quant_factor) + s->avctx->b_quant_offset + 0.5); | |
128 | 1536 | qmax = (int)(qmax * FFABS(s->avctx->b_quant_factor) + s->avctx->b_quant_offset + 0.5); | |
129 | 1536 | break; | |
130 | 726 | case AV_PICTURE_TYPE_I: | |
131 | 726 | qmin = (int)(qmin * FFABS(s->avctx->i_quant_factor) + s->avctx->i_quant_offset + 0.5); | |
132 | 726 | qmax = (int)(qmax * FFABS(s->avctx->i_quant_factor) + s->avctx->i_quant_offset + 0.5); | |
133 | 726 | break; | |
134 | } | ||
135 | |||
136 | 3492 | qmin = av_clip(qmin, 1, FF_LAMBDA_MAX); | |
137 | 3492 | qmax = av_clip(qmax, 1, FF_LAMBDA_MAX); | |
138 | |||
139 |
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3492 | if (qmax < qmin) |
140 | ✗ | qmax = qmin; | |
141 | |||
142 | 3492 | *qmin_ret = qmin; | |
143 | 3492 | *qmax_ret = qmax; | |
144 | 3492 | } | |
145 | |||
146 | 1746 | static double modify_qscale(MpegEncContext *s, RateControlEntry *rce, | |
147 | double q, int frame_num) | ||
148 | { | ||
149 | 1746 | RateControlContext *rcc = &s->rc_context; | |
150 | 1746 | const double buffer_size = s->avctx->rc_buffer_size; | |
151 | 1746 | const double fps = get_fps(s->avctx); | |
152 | 1746 | const double min_rate = s->avctx->rc_min_rate / fps; | |
153 | 1746 | const double max_rate = s->avctx->rc_max_rate / fps; | |
154 | 1746 | const int pict_type = rce->new_pict_type; | |
155 | int qmin, qmax; | ||
156 | |||
157 | 1746 | get_qminmax(&qmin, &qmax, s, pict_type); | |
158 | |||
159 | /* modulation */ | ||
160 |
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1746 | if (s->rc_qmod_freq && |
161 | ✗ | frame_num % s->rc_qmod_freq == 0 && | |
162 | pict_type == AV_PICTURE_TYPE_P) | ||
163 | ✗ | q *= s->rc_qmod_amp; | |
164 | |||
165 | /* buffer overflow/underflow protection */ | ||
166 |
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1746 | if (buffer_size) { |
167 | 25 | double expected_size = rcc->buffer_index; | |
168 | double q_limit; | ||
169 | |||
170 |
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25 | if (min_rate) { |
171 | 25 | double d = 2 * (buffer_size - expected_size) / buffer_size; | |
172 |
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25 | if (d > 1.0) |
173 | ✗ | d = 1.0; | |
174 |
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25 | else if (d < 0.0001) |
175 | 25 | d = 0.0001; | |
176 | 25 | q *= pow(d, 1.0 / s->rc_buffer_aggressivity); | |
177 | |||
178 | 25 | q_limit = bits2qp(rce, | |
179 |
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25 | FFMAX((min_rate - buffer_size + rcc->buffer_index) * |
180 | s->avctx->rc_min_vbv_overflow_use, 1)); | ||
181 | |||
182 |
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25 | if (q > q_limit) { |
183 | ✗ | if (s->avctx->debug & FF_DEBUG_RC) | |
184 | ✗ | av_log(s->avctx, AV_LOG_DEBUG, | |
185 | "limiting QP %f -> %f\n", q, q_limit); | ||
186 | ✗ | q = q_limit; | |
187 | } | ||
188 | } | ||
189 | |||
190 |
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25 | if (max_rate) { |
191 | 25 | double d = 2 * expected_size / buffer_size; | |
192 |
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25 | if (d > 1.0) |
193 | 25 | d = 1.0; | |
194 | ✗ | else if (d < 0.0001) | |
195 | ✗ | d = 0.0001; | |
196 | 25 | q /= pow(d, 1.0 / s->rc_buffer_aggressivity); | |
197 | |||
198 | 25 | q_limit = bits2qp(rce, | |
199 |
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25 | FFMAX(rcc->buffer_index * |
200 | s->avctx->rc_max_available_vbv_use, | ||
201 | 1)); | ||
202 |
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25 | if (q < q_limit) { |
203 |
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24 | if (s->avctx->debug & FF_DEBUG_RC) |
204 | ✗ | av_log(s->avctx, AV_LOG_DEBUG, | |
205 | "limiting QP %f -> %f\n", q, q_limit); | ||
206 | 24 | q = q_limit; | |
207 | } | ||
208 | } | ||
209 | } | ||
210 | ff_dlog(s, "q:%f max:%f min:%f size:%f index:%f agr:%f\n", | ||
211 | q, max_rate, min_rate, buffer_size, rcc->buffer_index, | ||
212 | s->rc_buffer_aggressivity); | ||
213 |
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1746 | if (s->rc_qsquish == 0.0 || qmin == qmax) { |
214 |
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1746 | if (q < qmin) |
215 | 604 | q = qmin; | |
216 |
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1142 | else if (q > qmax) |
217 | 114 | q = qmax; | |
218 | } else { | ||
219 | ✗ | double min2 = log(qmin); | |
220 | ✗ | double max2 = log(qmax); | |
221 | |||
222 | ✗ | q = log(q); | |
223 | ✗ | q = (q - min2) / (max2 - min2) - 0.5; | |
224 | ✗ | q *= -4.0; | |
225 | ✗ | q = 1.0 / (1.0 + exp(q)); | |
226 | ✗ | q = q * (max2 - min2) + min2; | |
227 | |||
228 | ✗ | q = exp(q); | |
229 | } | ||
230 | |||
231 | 1746 | return q; | |
232 | } | ||
233 | |||
234 | /** | ||
235 | * Modify the bitrate curve from pass1 for one frame. | ||
236 | */ | ||
237 | 1746 | static double get_qscale(MpegEncContext *s, RateControlEntry *rce, | |
238 | double rate_factor, int frame_num) | ||
239 | { | ||
240 | 1746 | RateControlContext *rcc = &s->rc_context; | |
241 | 1746 | AVCodecContext *a = s->avctx; | |
242 | 1746 | const int pict_type = rce->new_pict_type; | |
243 | 1746 | const double mb_num = s->mb_num; | |
244 | double q, bits; | ||
245 | int i; | ||
246 | |||
247 | 5238 | double const_values[] = { | |
248 | M_PI, | ||
249 | M_E, | ||
250 | 1746 | rce->i_tex_bits * rce->qscale, | |
251 | 1746 | rce->p_tex_bits * rce->qscale, | |
252 | 1746 | (rce->i_tex_bits + rce->p_tex_bits) * (double)rce->qscale, | |
253 | 1746 | rce->mv_bits / mb_num, | |
254 |
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1746 | rce->pict_type == AV_PICTURE_TYPE_B ? (rce->f_code + rce->b_code) * 0.5 : rce->f_code, |
255 | 1746 | rce->i_count / mb_num, | |
256 | 1746 | rce->mc_mb_var_sum / mb_num, | |
257 | 1746 | rce->mb_var_sum / mb_num, | |
258 |
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1746 | rce->pict_type == AV_PICTURE_TYPE_I, |
259 |
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1746 | rce->pict_type == AV_PICTURE_TYPE_P, |
260 |
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1746 | rce->pict_type == AV_PICTURE_TYPE_B, |
261 | 1746 | rcc->qscale_sum[pict_type] / (double)rcc->frame_count[pict_type], | |
262 | 1746 | a->qcompress, | |
263 | 1746 | rcc->i_cplx_sum[AV_PICTURE_TYPE_I] / (double)rcc->frame_count[AV_PICTURE_TYPE_I], | |
264 | 1746 | rcc->i_cplx_sum[AV_PICTURE_TYPE_P] / (double)rcc->frame_count[AV_PICTURE_TYPE_P], | |
265 | 1746 | rcc->p_cplx_sum[AV_PICTURE_TYPE_P] / (double)rcc->frame_count[AV_PICTURE_TYPE_P], | |
266 | 1746 | rcc->p_cplx_sum[AV_PICTURE_TYPE_B] / (double)rcc->frame_count[AV_PICTURE_TYPE_B], | |
267 | 1746 | (rcc->i_cplx_sum[pict_type] + rcc->p_cplx_sum[pict_type]) / (double)rcc->frame_count[pict_type], | |
268 | 0 | ||
269 | }; | ||
270 | |||
271 | 1746 | bits = av_expr_eval(rcc->rc_eq_eval, const_values, rce); | |
272 |
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1746 | if (isnan(bits)) { |
273 | ✗ | av_log(s->avctx, AV_LOG_ERROR, "Error evaluating rc_eq \"%s\"\n", s->rc_eq); | |
274 | ✗ | return -1; | |
275 | } | ||
276 | |||
277 | 1746 | rcc->pass1_rc_eq_output_sum += bits; | |
278 | 1746 | bits *= rate_factor; | |
279 |
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1746 | if (bits < 0.0) |
280 | ✗ | bits = 0.0; | |
281 | 1746 | bits += 1.0; // avoid 1/0 issues | |
282 | |||
283 | /* user override */ | ||
284 |
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1746 | for (i = 0; i < s->avctx->rc_override_count; i++) { |
285 | ✗ | RcOverride *rco = s->avctx->rc_override; | |
286 | ✗ | if (rco[i].start_frame > frame_num) | |
287 | ✗ | continue; | |
288 | ✗ | if (rco[i].end_frame < frame_num) | |
289 | ✗ | continue; | |
290 | |||
291 | ✗ | if (rco[i].qscale) | |
292 | ✗ | bits = qp2bits(rce, rco[i].qscale); // FIXME move at end to really force it? | |
293 | else | ||
294 | ✗ | bits *= rco[i].quality_factor; | |
295 | } | ||
296 | |||
297 | 1746 | q = bits2qp(rce, bits); | |
298 | |||
299 | /* I/B difference */ | ||
300 |
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1746 | if (pict_type == AV_PICTURE_TYPE_I && s->avctx->i_quant_factor < 0.0) |
301 | 363 | q = -q * s->avctx->i_quant_factor + s->avctx->i_quant_offset; | |
302 |
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1383 | else if (pict_type == AV_PICTURE_TYPE_B && s->avctx->b_quant_factor < 0.0) |
303 | ✗ | q = -q * s->avctx->b_quant_factor + s->avctx->b_quant_offset; | |
304 |
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1746 | if (q < 1) |
305 | 2 | q = 1; | |
306 | |||
307 | 1746 | return q; | |
308 | } | ||
309 | |||
310 | ✗ | static int init_pass2(MpegEncContext *s) | |
311 | { | ||
312 | ✗ | RateControlContext *rcc = &s->rc_context; | |
313 | ✗ | AVCodecContext *a = s->avctx; | |
314 | int i, toobig; | ||
315 | ✗ | double fps = get_fps(s->avctx); | |
316 | ✗ | double complexity[5] = { 0 }; // approximate bits at quant=1 | |
317 | ✗ | uint64_t const_bits[5] = { 0 }; // quantizer independent bits | |
318 | uint64_t all_const_bits; | ||
319 | ✗ | uint64_t all_available_bits = (uint64_t)(s->bit_rate * | |
320 | ✗ | (double)rcc->num_entries / fps); | |
321 | ✗ | double rate_factor = 0; | |
322 | double step; | ||
323 | ✗ | const int filter_size = (int)(a->qblur * 4) | 1; | |
324 | ✗ | double expected_bits = 0; // init to silence gcc warning | |
325 | double *qscale, *blurred_qscale, qscale_sum; | ||
326 | |||
327 | /* find complexity & const_bits & decide the pict_types */ | ||
328 | ✗ | for (i = 0; i < rcc->num_entries; i++) { | |
329 | ✗ | RateControlEntry *rce = &rcc->entry[i]; | |
330 | |||
331 | ✗ | rce->new_pict_type = rce->pict_type; | |
332 | ✗ | rcc->i_cplx_sum[rce->pict_type] += rce->i_tex_bits * rce->qscale; | |
333 | ✗ | rcc->p_cplx_sum[rce->pict_type] += rce->p_tex_bits * rce->qscale; | |
334 | ✗ | rcc->mv_bits_sum[rce->pict_type] += rce->mv_bits; | |
335 | ✗ | rcc->frame_count[rce->pict_type]++; | |
336 | |||
337 | ✗ | complexity[rce->new_pict_type] += (rce->i_tex_bits + rce->p_tex_bits) * | |
338 | ✗ | (double)rce->qscale; | |
339 | ✗ | const_bits[rce->new_pict_type] += rce->mv_bits + rce->misc_bits; | |
340 | } | ||
341 | |||
342 | ✗ | all_const_bits = const_bits[AV_PICTURE_TYPE_I] + | |
343 | ✗ | const_bits[AV_PICTURE_TYPE_P] + | |
344 | ✗ | const_bits[AV_PICTURE_TYPE_B]; | |
345 | |||
346 | ✗ | if (all_available_bits < all_const_bits) { | |
347 | ✗ | av_log(s->avctx, AV_LOG_ERROR, "requested bitrate is too low\n"); | |
348 | ✗ | return -1; | |
349 | } | ||
350 | |||
351 | ✗ | qscale = av_malloc_array(rcc->num_entries, sizeof(double)); | |
352 | ✗ | blurred_qscale = av_malloc_array(rcc->num_entries, sizeof(double)); | |
353 | ✗ | if (!qscale || !blurred_qscale) { | |
354 | ✗ | av_free(qscale); | |
355 | ✗ | av_free(blurred_qscale); | |
356 | ✗ | return AVERROR(ENOMEM); | |
357 | } | ||
358 | ✗ | toobig = 0; | |
359 | |||
360 | ✗ | for (step = 256 * 256; step > 0.0000001; step *= 0.5) { | |
361 | ✗ | expected_bits = 0; | |
362 | ✗ | rate_factor += step; | |
363 | |||
364 | ✗ | rcc->buffer_index = s->avctx->rc_buffer_size / 2; | |
365 | |||
366 | /* find qscale */ | ||
367 | ✗ | for (i = 0; i < rcc->num_entries; i++) { | |
368 | ✗ | RateControlEntry *rce = &rcc->entry[i]; | |
369 | |||
370 | ✗ | qscale[i] = get_qscale(s, &rcc->entry[i], rate_factor, i); | |
371 | ✗ | rcc->last_qscale_for[rce->pict_type] = qscale[i]; | |
372 | } | ||
373 | ✗ | av_assert0(filter_size % 2 == 1); | |
374 | |||
375 | /* fixed I/B QP relative to P mode */ | ||
376 | ✗ | for (i = FFMAX(0, rcc->num_entries - 300); i < rcc->num_entries; i++) { | |
377 | ✗ | RateControlEntry *rce = &rcc->entry[i]; | |
378 | |||
379 | ✗ | qscale[i] = get_diff_limited_q(s, rce, qscale[i]); | |
380 | } | ||
381 | |||
382 | ✗ | for (i = rcc->num_entries - 1; i >= 0; i--) { | |
383 | ✗ | RateControlEntry *rce = &rcc->entry[i]; | |
384 | |||
385 | ✗ | qscale[i] = get_diff_limited_q(s, rce, qscale[i]); | |
386 | } | ||
387 | |||
388 | /* smooth curve */ | ||
389 | ✗ | for (i = 0; i < rcc->num_entries; i++) { | |
390 | ✗ | RateControlEntry *rce = &rcc->entry[i]; | |
391 | ✗ | const int pict_type = rce->new_pict_type; | |
392 | int j; | ||
393 | ✗ | double q = 0.0, sum = 0.0; | |
394 | |||
395 | ✗ | for (j = 0; j < filter_size; j++) { | |
396 | ✗ | int index = i + j - filter_size / 2; | |
397 | ✗ | double d = index - i; | |
398 | ✗ | double coeff = a->qblur == 0 ? 1.0 : exp(-d * d / (a->qblur * a->qblur)); | |
399 | |||
400 | ✗ | if (index < 0 || index >= rcc->num_entries) | |
401 | ✗ | continue; | |
402 | ✗ | if (pict_type != rcc->entry[index].new_pict_type) | |
403 | ✗ | continue; | |
404 | ✗ | q += qscale[index] * coeff; | |
405 | ✗ | sum += coeff; | |
406 | } | ||
407 | ✗ | blurred_qscale[i] = q / sum; | |
408 | } | ||
409 | |||
410 | /* find expected bits */ | ||
411 | ✗ | for (i = 0; i < rcc->num_entries; i++) { | |
412 | ✗ | RateControlEntry *rce = &rcc->entry[i]; | |
413 | double bits; | ||
414 | |||
415 | ✗ | rce->new_qscale = modify_qscale(s, rce, blurred_qscale[i], i); | |
416 | |||
417 | ✗ | bits = qp2bits(rce, rce->new_qscale) + rce->mv_bits + rce->misc_bits; | |
418 | ✗ | bits += 8 * ff_vbv_update(s, bits); | |
419 | |||
420 | ✗ | rce->expected_bits = expected_bits; | |
421 | ✗ | expected_bits += bits; | |
422 | } | ||
423 | |||
424 | ff_dlog(s->avctx, | ||
425 | "expected_bits: %f all_available_bits: %d rate_factor: %f\n", | ||
426 | expected_bits, (int)all_available_bits, rate_factor); | ||
427 | ✗ | if (expected_bits > all_available_bits) { | |
428 | ✗ | rate_factor -= step; | |
429 | ✗ | ++toobig; | |
430 | } | ||
431 | } | ||
432 | ✗ | av_free(qscale); | |
433 | ✗ | av_free(blurred_qscale); | |
434 | |||
435 | /* check bitrate calculations and print info */ | ||
436 | ✗ | qscale_sum = 0.0; | |
437 | ✗ | for (i = 0; i < rcc->num_entries; i++) { | |
438 | ff_dlog(s, "[lavc rc] entry[%d].new_qscale = %.3f qp = %.3f\n", | ||
439 | i, | ||
440 | rcc->entry[i].new_qscale, | ||
441 | rcc->entry[i].new_qscale / FF_QP2LAMBDA); | ||
442 | ✗ | qscale_sum += av_clip(rcc->entry[i].new_qscale / FF_QP2LAMBDA, | |
443 | ✗ | s->avctx->qmin, s->avctx->qmax); | |
444 | } | ||
445 | ✗ | av_assert0(toobig <= 40); | |
446 | ✗ | av_log(s->avctx, AV_LOG_DEBUG, | |
447 | "[lavc rc] requested bitrate: %"PRId64" bps expected bitrate: %"PRId64" bps\n", | ||
448 | s->bit_rate, | ||
449 | ✗ | (int64_t)(expected_bits / ((double)all_available_bits / s->bit_rate))); | |
450 | ✗ | av_log(s->avctx, AV_LOG_DEBUG, | |
451 | "[lavc rc] estimated target average qp: %.3f\n", | ||
452 | ✗ | (float)qscale_sum / rcc->num_entries); | |
453 | ✗ | if (toobig == 0) { | |
454 | ✗ | av_log(s->avctx, AV_LOG_INFO, | |
455 | "[lavc rc] Using all of requested bitrate is not " | ||
456 | "necessary for this video with these parameters.\n"); | ||
457 | ✗ | } else if (toobig == 40) { | |
458 | ✗ | av_log(s->avctx, AV_LOG_ERROR, | |
459 | "[lavc rc] Error: bitrate too low for this video " | ||
460 | "with these parameters.\n"); | ||
461 | ✗ | return -1; | |
462 | ✗ | } else if (fabs(expected_bits / all_available_bits - 1.0) > 0.01) { | |
463 | ✗ | av_log(s->avctx, AV_LOG_ERROR, | |
464 | "[lavc rc] Error: 2pass curve failed to converge\n"); | ||
465 | ✗ | return -1; | |
466 | } | ||
467 | |||
468 | ✗ | return 0; | |
469 | } | ||
470 | |||
471 | 187 | av_cold int ff_rate_control_init(MpegEncContext *s) | |
472 | { | ||
473 | 187 | RateControlContext *rcc = &s->rc_context; | |
474 | int i, res; | ||
475 | static const char * const const_names[] = { | ||
476 | "PI", | ||
477 | "E", | ||
478 | "iTex", | ||
479 | "pTex", | ||
480 | "tex", | ||
481 | "mv", | ||
482 | "fCode", | ||
483 | "iCount", | ||
484 | "mcVar", | ||
485 | "var", | ||
486 | "isI", | ||
487 | "isP", | ||
488 | "isB", | ||
489 | "avgQP", | ||
490 | "qComp", | ||
491 | "avgIITex", | ||
492 | "avgPITex", | ||
493 | "avgPPTex", | ||
494 | "avgBPTex", | ||
495 | "avgTex", | ||
496 | NULL | ||
497 | }; | ||
498 | static double (* const func1[])(void *, double) = { | ||
499 | (double (*)(void *, double)) bits2qp, | ||
500 | (double (*)(void *, double)) qp2bits, | ||
501 | NULL | ||
502 | }; | ||
503 | static const char * const func1_names[] = { | ||
504 | "bits2qp", | ||
505 | "qp2bits", | ||
506 | NULL | ||
507 | }; | ||
508 | 187 | emms_c(); | |
509 | |||
510 |
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187 | if (!s->avctx->rc_max_available_vbv_use && s->avctx->rc_buffer_size) { |
511 |
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1 | if (s->avctx->rc_max_rate) { |
512 | 1 | s->avctx->rc_max_available_vbv_use = av_clipf(s->avctx->rc_max_rate/(s->avctx->rc_buffer_size*get_fps(s->avctx)), 1.0/3, 1.0); | |
513 | } else | ||
514 | ✗ | s->avctx->rc_max_available_vbv_use = 1.0; | |
515 | } | ||
516 | |||
517 | 187 | res = av_expr_parse(&rcc->rc_eq_eval, | |
518 | 187 | s->rc_eq ? s->rc_eq : "tex^qComp", | |
519 | const_names, func1_names, func1, | ||
520 |
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187 | NULL, NULL, 0, s->avctx); |
521 |
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187 | if (res < 0) { |
522 | ✗ | av_log(s->avctx, AV_LOG_ERROR, "Error parsing rc_eq \"%s\"\n", s->rc_eq); | |
523 | ✗ | return res; | |
524 | } | ||
525 | |||
526 |
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1122 | for (i = 0; i < 5; i++) { |
527 | 935 | rcc->pred[i].coeff = FF_QP2LAMBDA * 7.0; | |
528 | 935 | rcc->pred[i].count = 1.0; | |
529 | 935 | rcc->pred[i].decay = 0.4; | |
530 | |||
531 | 935 | rcc->i_cplx_sum [i] = | |
532 | 935 | rcc->p_cplx_sum [i] = | |
533 | 935 | rcc->mv_bits_sum[i] = | |
534 | 935 | rcc->qscale_sum [i] = | |
535 | 935 | rcc->frame_count[i] = 1; // 1 is better because of 1/0 and such | |
536 | |||
537 | 935 | rcc->last_qscale_for[i] = FF_QP2LAMBDA * 5; | |
538 | } | ||
539 | 187 | rcc->buffer_index = s->avctx->rc_initial_buffer_occupancy; | |
540 |
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187 | if (!rcc->buffer_index) |
541 | 185 | rcc->buffer_index = s->avctx->rc_buffer_size * 3 / 4; | |
542 | |||
543 |
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187 | if (s->avctx->flags & AV_CODEC_FLAG_PASS2) { |
544 | int i; | ||
545 | char *p; | ||
546 | |||
547 | /* find number of pics */ | ||
548 | ✗ | p = s->avctx->stats_in; | |
549 | ✗ | for (i = -1; p; i++) | |
550 | ✗ | p = strchr(p + 1, ';'); | |
551 | ✗ | i += s->max_b_frames; | |
552 | ✗ | if (i <= 0 || i >= INT_MAX / sizeof(RateControlEntry)) | |
553 | ✗ | return -1; | |
554 | ✗ | rcc->entry = av_mallocz(i * sizeof(RateControlEntry)); | |
555 | ✗ | if (!rcc->entry) | |
556 | ✗ | return AVERROR(ENOMEM); | |
557 | ✗ | rcc->num_entries = i; | |
558 | |||
559 | /* init all to skipped P-frames | ||
560 | * (with B-frames we might have a not encoded frame at the end FIXME) */ | ||
561 | ✗ | for (i = 0; i < rcc->num_entries; i++) { | |
562 | ✗ | RateControlEntry *rce = &rcc->entry[i]; | |
563 | |||
564 | ✗ | rce->pict_type = rce->new_pict_type = AV_PICTURE_TYPE_P; | |
565 | ✗ | rce->qscale = rce->new_qscale = FF_QP2LAMBDA * 2; | |
566 | ✗ | rce->misc_bits = s->mb_num + 10; | |
567 | ✗ | rce->mb_var_sum = s->mb_num * 100; | |
568 | } | ||
569 | |||
570 | /* read stats */ | ||
571 | ✗ | p = s->avctx->stats_in; | |
572 | ✗ | for (i = 0; i < rcc->num_entries - s->max_b_frames; i++) { | |
573 | RateControlEntry *rce; | ||
574 | int picture_number; | ||
575 | int e; | ||
576 | char *next; | ||
577 | |||
578 | ✗ | next = strchr(p, ';'); | |
579 | ✗ | if (next) { | |
580 | ✗ | (*next) = 0; // sscanf is unbelievably slow on looong strings // FIXME copy / do not write | |
581 | ✗ | next++; | |
582 | } | ||
583 | ✗ | e = sscanf(p, " in:%d ", &picture_number); | |
584 | |||
585 | ✗ | av_assert0(picture_number >= 0); | |
586 | ✗ | av_assert0(picture_number < rcc->num_entries); | |
587 | ✗ | rce = &rcc->entry[picture_number]; | |
588 | |||
589 | ✗ | e += sscanf(p, " in:%*d out:%*d type:%d q:%f itex:%d ptex:%d mv:%d misc:%d fcode:%d bcode:%d mc-var:%"SCNd64" var:%"SCNd64" icount:%d skipcount:%d hbits:%d", | |
590 | &rce->pict_type, &rce->qscale, &rce->i_tex_bits, &rce->p_tex_bits, | ||
591 | &rce->mv_bits, &rce->misc_bits, | ||
592 | &rce->f_code, &rce->b_code, | ||
593 | &rce->mc_mb_var_sum, &rce->mb_var_sum, | ||
594 | &rce->i_count, &rce->skip_count, &rce->header_bits); | ||
595 | ✗ | if (e != 14) { | |
596 | ✗ | av_log(s->avctx, AV_LOG_ERROR, | |
597 | "statistics are damaged at line %d, parser out=%d\n", | ||
598 | i, e); | ||
599 | ✗ | return -1; | |
600 | } | ||
601 | |||
602 | ✗ | p = next; | |
603 | } | ||
604 | |||
605 | ✗ | if (init_pass2(s) < 0) { | |
606 | ✗ | ff_rate_control_uninit(s); | |
607 | ✗ | return -1; | |
608 | } | ||
609 | } | ||
610 | |||
611 |
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187 | if (!(s->avctx->flags & AV_CODEC_FLAG_PASS2)) { |
612 | 187 | rcc->short_term_qsum = 0.001; | |
613 | 187 | rcc->short_term_qcount = 0.001; | |
614 | |||
615 | 187 | rcc->pass1_rc_eq_output_sum = 0.001; | |
616 | 187 | rcc->pass1_wanted_bits = 0.001; | |
617 | |||
618 |
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187 | if (s->avctx->qblur > 1.0) { |
619 | ✗ | av_log(s->avctx, AV_LOG_ERROR, "qblur too large\n"); | |
620 | ✗ | return -1; | |
621 | } | ||
622 | /* init stuff with the user specified complexity */ | ||
623 |
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187 | if (s->rc_initial_cplx) { |
624 | ✗ | for (i = 0; i < 60 * 30; i++) { | |
625 | ✗ | double bits = s->rc_initial_cplx * (i / 10000.0 + 1.0) * s->mb_num; | |
626 | RateControlEntry rce; | ||
627 | |||
628 | ✗ | if (i % ((s->gop_size + 3) / 4) == 0) | |
629 | ✗ | rce.pict_type = AV_PICTURE_TYPE_I; | |
630 | ✗ | else if (i % (s->max_b_frames + 1)) | |
631 | ✗ | rce.pict_type = AV_PICTURE_TYPE_B; | |
632 | else | ||
633 | ✗ | rce.pict_type = AV_PICTURE_TYPE_P; | |
634 | |||
635 | ✗ | rce.new_pict_type = rce.pict_type; | |
636 | ✗ | rce.mc_mb_var_sum = bits * s->mb_num / 100000; | |
637 | ✗ | rce.mb_var_sum = s->mb_num; | |
638 | |||
639 | ✗ | rce.qscale = FF_QP2LAMBDA * 2; | |
640 | ✗ | rce.f_code = 2; | |
641 | ✗ | rce.b_code = 1; | |
642 | ✗ | rce.misc_bits = 1; | |
643 | |||
644 | ✗ | if (s->pict_type == AV_PICTURE_TYPE_I) { | |
645 | ✗ | rce.i_count = s->mb_num; | |
646 | ✗ | rce.i_tex_bits = bits; | |
647 | ✗ | rce.p_tex_bits = 0; | |
648 | ✗ | rce.mv_bits = 0; | |
649 | } else { | ||
650 | ✗ | rce.i_count = 0; // FIXME we do know this approx | |
651 | ✗ | rce.i_tex_bits = 0; | |
652 | ✗ | rce.p_tex_bits = bits * 0.9; | |
653 | ✗ | rce.mv_bits = bits * 0.1; | |
654 | } | ||
655 | ✗ | rcc->i_cplx_sum[rce.pict_type] += rce.i_tex_bits * rce.qscale; | |
656 | ✗ | rcc->p_cplx_sum[rce.pict_type] += rce.p_tex_bits * rce.qscale; | |
657 | ✗ | rcc->mv_bits_sum[rce.pict_type] += rce.mv_bits; | |
658 | ✗ | rcc->frame_count[rce.pict_type]++; | |
659 | |||
660 | ✗ | get_qscale(s, &rce, rcc->pass1_wanted_bits / rcc->pass1_rc_eq_output_sum, i); | |
661 | |||
662 | // FIXME misbehaves a little for variable fps | ||
663 | ✗ | rcc->pass1_wanted_bits += s->bit_rate / get_fps(s->avctx); | |
664 | } | ||
665 | } | ||
666 | } | ||
667 | |||
668 | 187 | return 0; | |
669 | } | ||
670 | |||
671 | 196 | av_cold void ff_rate_control_uninit(MpegEncContext *s) | |
672 | { | ||
673 | 196 | RateControlContext *rcc = &s->rc_context; | |
674 | 196 | emms_c(); | |
675 | |||
676 | 196 | av_expr_free(rcc->rc_eq_eval); | |
677 | 196 | av_freep(&rcc->entry); | |
678 | 196 | } | |
679 | |||
680 | 8564 | int ff_vbv_update(MpegEncContext *s, int frame_size) | |
681 | { | ||
682 | 8564 | RateControlContext *rcc = &s->rc_context; | |
683 | 8564 | const double fps = get_fps(s->avctx); | |
684 | 8564 | const int buffer_size = s->avctx->rc_buffer_size; | |
685 | 8564 | const double min_rate = s->avctx->rc_min_rate / fps; | |
686 | 8564 | const double max_rate = s->avctx->rc_max_rate / fps; | |
687 | |||
688 | ff_dlog(s, "%d %f %d %f %f\n", | ||
689 | buffer_size, rcc->buffer_index, frame_size, min_rate, max_rate); | ||
690 | |||
691 |
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8564 | if (buffer_size) { |
692 | int left; | ||
693 | |||
694 | 50 | rcc->buffer_index -= frame_size; | |
695 |
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50 | if (rcc->buffer_index < 0) { |
696 | ✗ | av_log(s->avctx, AV_LOG_ERROR, "rc buffer underflow\n"); | |
697 | ✗ | if (frame_size > max_rate && s->qscale == s->avctx->qmax) { | |
698 | ✗ | av_log(s->avctx, AV_LOG_ERROR, "max bitrate possibly too small or try trellis with large lmax or increase qmax\n"); | |
699 | } | ||
700 | ✗ | rcc->buffer_index = 0; | |
701 | } | ||
702 | |||
703 | 50 | left = buffer_size - rcc->buffer_index - 1; | |
704 | 50 | rcc->buffer_index += av_clip(left, min_rate, max_rate); | |
705 | |||
706 |
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50 | if (rcc->buffer_index > buffer_size) { |
707 | 50 | int stuffing = ceil((rcc->buffer_index - buffer_size) / 8); | |
708 | |||
709 |
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50 | if (stuffing < 4 && s->codec_id == AV_CODEC_ID_MPEG4) |
710 | ✗ | stuffing = 4; | |
711 | 50 | rcc->buffer_index -= 8 * stuffing; | |
712 | |||
713 |
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50 | if (s->avctx->debug & FF_DEBUG_RC) |
714 | ✗ | av_log(s->avctx, AV_LOG_DEBUG, "stuffing %d bytes\n", stuffing); | |
715 | |||
716 | 50 | return stuffing; | |
717 | } | ||
718 | } | ||
719 | 8514 | return 0; | |
720 | } | ||
721 | |||
722 | 1746 | static double predict_size(Predictor *p, double q, double var) | |
723 | { | ||
724 | 1746 | return p->coeff * var / (q * p->count); | |
725 | } | ||
726 | |||
727 | 1643 | static void update_predictor(Predictor *p, double q, double var, double size) | |
728 | { | ||
729 | 1643 | double new_coeff = size * q / (var + 1); | |
730 |
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1643 | if (var < 10) |
731 | ✗ | return; | |
732 | |||
733 | 1643 | p->count *= p->decay; | |
734 | 1643 | p->coeff *= p->decay; | |
735 | 1643 | p->count++; | |
736 | 1643 | p->coeff += new_coeff; | |
737 | } | ||
738 | |||
739 | 800 | static void adaptive_quantization(MpegEncContext *s, double q) | |
740 | { | ||
741 | int i; | ||
742 | 800 | const float lumi_masking = s->avctx->lumi_masking / (128.0 * 128.0); | |
743 | 800 | const float dark_masking = s->avctx->dark_masking / (128.0 * 128.0); | |
744 | 800 | const float temp_cplx_masking = s->avctx->temporal_cplx_masking; | |
745 | 800 | const float spatial_cplx_masking = s->avctx->spatial_cplx_masking; | |
746 | 800 | const float p_masking = s->avctx->p_masking; | |
747 | 800 | const float border_masking = s->border_masking; | |
748 | 800 | float bits_sum = 0.0; | |
749 | 800 | float cplx_sum = 0.0; | |
750 | 800 | float *cplx_tab = s->cplx_tab; | |
751 | 800 | float *bits_tab = s->bits_tab; | |
752 | 800 | const int qmin = s->avctx->mb_lmin; | |
753 | 800 | const int qmax = s->avctx->mb_lmax; | |
754 | 800 | Picture *const pic = &s->current_picture; | |
755 | 800 | const int mb_width = s->mb_width; | |
756 | 800 | const int mb_height = s->mb_height; | |
757 | |||
758 |
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240350 | for (i = 0; i < s->mb_num; i++) { |
759 | 239550 | const int mb_xy = s->mb_index2xy[i]; | |
760 | 239550 | float temp_cplx = sqrt(pic->mc_mb_var[mb_xy]); // FIXME merge in pow() | |
761 | 239550 | float spat_cplx = sqrt(pic->mb_var[mb_xy]); | |
762 | 239550 | const int lumi = pic->mb_mean[mb_xy]; | |
763 | float bits, cplx, factor; | ||
764 | 239550 | int mb_x = mb_xy % s->mb_stride; | |
765 | 239550 | int mb_y = mb_xy / s->mb_stride; | |
766 | int mb_distance; | ||
767 | 239550 | float mb_factor = 0.0; | |
768 |
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239550 | if (spat_cplx < 4) |
769 | 30909 | spat_cplx = 4; // FIXME fine-tune | |
770 |
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239550 | if (temp_cplx < 4) |
771 | 97723 | temp_cplx = 4; // FIXME fine-tune | |
772 | |||
773 |
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239550 | if ((s->mb_type[mb_xy] & CANDIDATE_MB_TYPE_INTRA)) { // FIXME hq mode |
774 | 45097 | cplx = spat_cplx; | |
775 | 45097 | factor = 1.0 + p_masking; | |
776 | } else { | ||
777 | 194453 | cplx = temp_cplx; | |
778 | 194453 | factor = pow(temp_cplx, -temp_cplx_masking); | |
779 | } | ||
780 | 239550 | factor *= pow(spat_cplx, -spatial_cplx_masking); | |
781 | |||
782 |
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239550 | if (lumi > 127) |
783 | 118173 | factor *= (1.0 - (lumi - 128) * (lumi - 128) * lumi_masking); | |
784 | else | ||
785 | 121377 | factor *= (1.0 - (lumi - 128) * (lumi - 128) * dark_masking); | |
786 | |||
787 |
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239550 | if (mb_x < mb_width / 5) { |
788 | 43200 | mb_distance = mb_width / 5 - mb_x; | |
789 | 43200 | mb_factor = (float)mb_distance / (float)(mb_width / 5); | |
790 |
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196350 | } else if (mb_x > 4 * mb_width / 5) { |
791 | 43200 | mb_distance = mb_x - 4 * mb_width / 5; | |
792 | 43200 | mb_factor = (float)mb_distance / (float)(mb_width / 5); | |
793 | } | ||
794 |
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239550 | if (mb_y < mb_height / 5) { |
795 | 39600 | mb_distance = mb_height / 5 - mb_y; | |
796 |
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39600 | mb_factor = FFMAX(mb_factor, |
797 | (float)mb_distance / (float)(mb_height / 5)); | ||
798 |
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199950 | } else if (mb_y > 4 * mb_height / 5) { |
799 | 39600 | mb_distance = mb_y - 4 * mb_height / 5; | |
800 |
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39600 | mb_factor = FFMAX(mb_factor, |
801 | (float)mb_distance / (float)(mb_height / 5)); | ||
802 | } | ||
803 | |||
804 | 239550 | factor *= 1.0 - border_masking * mb_factor; | |
805 | |||
806 |
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239550 | if (factor < 0.00001) |
807 | ✗ | factor = 0.00001; | |
808 | |||
809 | 239550 | bits = cplx * factor; | |
810 | 239550 | cplx_sum += cplx; | |
811 | 239550 | bits_sum += bits; | |
812 | 239550 | cplx_tab[i] = cplx; | |
813 | 239550 | bits_tab[i] = bits; | |
814 | } | ||
815 | |||
816 | /* handle qmin/qmax clipping */ | ||
817 |
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800 | if (s->mpv_flags & FF_MPV_FLAG_NAQ) { |
818 | ✗ | float factor = bits_sum / cplx_sum; | |
819 | ✗ | for (i = 0; i < s->mb_num; i++) { | |
820 | ✗ | float newq = q * cplx_tab[i] / bits_tab[i]; | |
821 | ✗ | newq *= factor; | |
822 | |||
823 | ✗ | if (newq > qmax) { | |
824 | ✗ | bits_sum -= bits_tab[i]; | |
825 | ✗ | cplx_sum -= cplx_tab[i] * q / qmax; | |
826 | ✗ | } else if (newq < qmin) { | |
827 | ✗ | bits_sum -= bits_tab[i]; | |
828 | ✗ | cplx_sum -= cplx_tab[i] * q / qmin; | |
829 | } | ||
830 | } | ||
831 | ✗ | if (bits_sum < 0.001) | |
832 | ✗ | bits_sum = 0.001; | |
833 | ✗ | if (cplx_sum < 0.001) | |
834 | ✗ | cplx_sum = 0.001; | |
835 | } | ||
836 | |||
837 |
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240350 | for (i = 0; i < s->mb_num; i++) { |
838 | 239550 | const int mb_xy = s->mb_index2xy[i]; | |
839 | 239550 | float newq = q * cplx_tab[i] / bits_tab[i]; | |
840 | int intq; | ||
841 | |||
842 |
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239550 | if (s->mpv_flags & FF_MPV_FLAG_NAQ) { |
843 | ✗ | newq *= bits_sum / cplx_sum; | |
844 | } | ||
845 | |||
846 | 239550 | intq = (int)(newq + 0.5); | |
847 | |||
848 |
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239550 | if (intq > qmax) |
849 | 18025 | intq = qmax; | |
850 |
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221525 | else if (intq < qmin) |
851 | 1713 | intq = qmin; | |
852 | 239550 | s->lambda_table[mb_xy] = intq; | |
853 | } | ||
854 | 800 | } | |
855 | |||
856 | ✗ | void ff_get_2pass_fcode(MpegEncContext *s) | |
857 | { | ||
858 | ✗ | RateControlContext *rcc = &s->rc_context; | |
859 | ✗ | RateControlEntry *rce = &rcc->entry[s->picture_number]; | |
860 | |||
861 | ✗ | s->f_code = rce->f_code; | |
862 | ✗ | s->b_code = rce->b_code; | |
863 | } | ||
864 | |||
865 | // FIXME rd or at least approx for dquant | ||
866 | |||
867 | 1746 | float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run) | |
868 | { | ||
869 | float q; | ||
870 | int qmin, qmax; | ||
871 | float br_compensation; | ||
872 | double diff; | ||
873 | double short_term_q; | ||
874 | double fps; | ||
875 | 1746 | int picture_number = s->picture_number; | |
876 | int64_t wanted_bits; | ||
877 | 1746 | RateControlContext *rcc = &s->rc_context; | |
878 | 1746 | AVCodecContext *a = s->avctx; | |
879 | RateControlEntry local_rce, *rce; | ||
880 | double bits; | ||
881 | double rate_factor; | ||
882 | int64_t var; | ||
883 | 1746 | const int pict_type = s->pict_type; | |
884 | 1746 | Picture * const pic = &s->current_picture; | |
885 | 1746 | emms_c(); | |
886 | |||
887 | 1746 | get_qminmax(&qmin, &qmax, s, pict_type); | |
888 | |||
889 | 1746 | fps = get_fps(s->avctx); | |
890 | /* update predictors */ | ||
891 |
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1746 | if (picture_number > 2 && !dry_run) { |
892 | 1643 | const int64_t last_var = | |
893 | 1643 | s->last_pict_type == AV_PICTURE_TYPE_I ? rcc->last_mb_var_sum | |
894 |
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1643 | : rcc->last_mc_mb_var_sum; |
895 | av_assert1(s->frame_bits >= s->stuffing_bits); | ||
896 | 1643 | update_predictor(&rcc->pred[s->last_pict_type], | |
897 | rcc->last_qscale, | ||
898 | sqrt(last_var), | ||
899 | 1643 | s->frame_bits - s->stuffing_bits); | |
900 | } | ||
901 | |||
902 |
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1746 | if (s->avctx->flags & AV_CODEC_FLAG_PASS2) { |
903 | ✗ | av_assert0(picture_number >= 0); | |
904 | ✗ | if (picture_number >= rcc->num_entries) { | |
905 | ✗ | av_log(s, AV_LOG_ERROR, "Input is longer than 2-pass log file\n"); | |
906 | ✗ | return -1; | |
907 | } | ||
908 | ✗ | rce = &rcc->entry[picture_number]; | |
909 | ✗ | wanted_bits = rce->expected_bits; | |
910 | } else { | ||
911 | Picture *dts_pic; | ||
912 | 1746 | rce = &local_rce; | |
913 | |||
914 | /* FIXME add a dts field to AVFrame and ensure it is set and use it | ||
915 | * here instead of reordering but the reordering is simpler for now | ||
916 | * until H.264 B-pyramid must be handled. */ | ||
917 |
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1746 | if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) |
918 | 1184 | dts_pic = s->current_picture_ptr; | |
919 | else | ||
920 | 562 | dts_pic = s->last_picture_ptr; | |
921 | |||
922 |
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1746 | if (!dts_pic || dts_pic->f->pts == AV_NOPTS_VALUE) |
923 | 26 | wanted_bits = (uint64_t)(s->bit_rate * (double)picture_number / fps); | |
924 | else | ||
925 | 1720 | wanted_bits = (uint64_t)(s->bit_rate * (double)dts_pic->f->pts / fps); | |
926 | } | ||
927 | |||
928 | 1746 | diff = s->total_bits - wanted_bits; | |
929 | 1746 | br_compensation = (a->bit_rate_tolerance - diff) / a->bit_rate_tolerance; | |
930 |
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1746 | if (br_compensation <= 0.0) |
931 | 199 | br_compensation = 0.001; | |
932 | |||
933 |
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1746 | var = pict_type == AV_PICTURE_TYPE_I ? pic->mb_var_sum : pic->mc_mb_var_sum; |
934 | |||
935 | 1746 | short_term_q = 0; /* avoid warning */ | |
936 |
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1746 | if (s->avctx->flags & AV_CODEC_FLAG_PASS2) { |
937 | ✗ | if (pict_type != AV_PICTURE_TYPE_I) | |
938 | ✗ | av_assert0(pict_type == rce->new_pict_type); | |
939 | |||
940 | ✗ | q = rce->new_qscale / br_compensation; | |
941 | ff_dlog(s, "%f %f %f last:%d var:%"PRId64" type:%d//\n", q, rce->new_qscale, | ||
942 | br_compensation, s->frame_bits, var, pict_type); | ||
943 | } else { | ||
944 | 1746 | rce->pict_type = | |
945 | 1746 | rce->new_pict_type = pict_type; | |
946 | 1746 | rce->mc_mb_var_sum = pic->mc_mb_var_sum; | |
947 | 1746 | rce->mb_var_sum = pic->mb_var_sum; | |
948 | 1746 | rce->qscale = FF_QP2LAMBDA * 2; | |
949 | 1746 | rce->f_code = s->f_code; | |
950 | 1746 | rce->b_code = s->b_code; | |
951 | 1746 | rce->misc_bits = 1; | |
952 | |||
953 | 1746 | bits = predict_size(&rcc->pred[pict_type], rce->qscale, sqrt(var)); | |
954 |
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1746 | if (pict_type == AV_PICTURE_TYPE_I) { |
955 | 363 | rce->i_count = s->mb_num; | |
956 | 363 | rce->i_tex_bits = bits; | |
957 | 363 | rce->p_tex_bits = 0; | |
958 | 363 | rce->mv_bits = 0; | |
959 | } else { | ||
960 | 1383 | rce->i_count = 0; // FIXME we do know this approx | |
961 | 1383 | rce->i_tex_bits = 0; | |
962 | 1383 | rce->p_tex_bits = bits * 0.9; | |
963 | 1383 | rce->mv_bits = bits * 0.1; | |
964 | } | ||
965 | 1746 | rcc->i_cplx_sum[pict_type] += rce->i_tex_bits * rce->qscale; | |
966 | 1746 | rcc->p_cplx_sum[pict_type] += rce->p_tex_bits * rce->qscale; | |
967 | 1746 | rcc->mv_bits_sum[pict_type] += rce->mv_bits; | |
968 | 1746 | rcc->frame_count[pict_type]++; | |
969 | |||
970 | 1746 | rate_factor = rcc->pass1_wanted_bits / | |
971 | 1746 | rcc->pass1_rc_eq_output_sum * br_compensation; | |
972 | |||
973 | 1746 | q = get_qscale(s, rce, rate_factor, picture_number); | |
974 |
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1746 | if (q < 0) |
975 | ✗ | return -1; | |
976 | |||
977 |
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1746 | av_assert0(q > 0.0); |
978 | 1746 | q = get_diff_limited_q(s, rce, q); | |
979 |
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1746 | av_assert0(q > 0.0); |
980 | |||
981 | // FIXME type dependent blur like in 2-pass | ||
982 |
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1746 | if (pict_type == AV_PICTURE_TYPE_P || s->intra_only) { |
983 | 816 | rcc->short_term_qsum *= a->qblur; | |
984 | 816 | rcc->short_term_qcount *= a->qblur; | |
985 | |||
986 | 816 | rcc->short_term_qsum += q; | |
987 | 816 | rcc->short_term_qcount++; | |
988 | 816 | q = short_term_q = rcc->short_term_qsum / rcc->short_term_qcount; | |
989 | } | ||
990 |
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1746 | av_assert0(q > 0.0); |
991 | |||
992 | 1746 | q = modify_qscale(s, rce, q, picture_number); | |
993 | |||
994 | 1746 | rcc->pass1_wanted_bits += s->bit_rate / fps; | |
995 | |||
996 |
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1746 | av_assert0(q > 0.0); |
997 | } | ||
998 | |||
999 |
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1746 | if (s->avctx->debug & FF_DEBUG_RC) { |
1000 | ✗ | av_log(s->avctx, AV_LOG_DEBUG, | |
1001 | "%c qp:%d<%2.1f<%d %d want:%"PRId64" total:%"PRId64" comp:%f st_q:%2.2f " | ||
1002 | "size:%d var:%"PRId64"/%"PRId64" br:%"PRId64" fps:%d\n", | ||
1003 | ✗ | av_get_picture_type_char(pict_type), | |
1004 | qmin, q, qmax, picture_number, | ||
1005 | ✗ | wanted_bits / 1000, s->total_bits / 1000, | |
1006 | br_compensation, short_term_q, s->frame_bits, | ||
1007 | pic->mb_var_sum, pic->mc_mb_var_sum, | ||
1008 | ✗ | s->bit_rate / 1000, (int)fps); | |
1009 | } | ||
1010 | |||
1011 |
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1746 | if (q < qmin) |
1012 | ✗ | q = qmin; | |
1013 |
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1746 | else if (q > qmax) |
1014 | ✗ | q = qmax; | |
1015 | |||
1016 |
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1746 | if (s->adaptive_quant) |
1017 | 800 | adaptive_quantization(s, q); | |
1018 | else | ||
1019 | 946 | q = (int)(q + 0.5); | |
1020 | |||
1021 |
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1746 | if (!dry_run) { |
1022 | 1746 | rcc->last_qscale = q; | |
1023 | 1746 | rcc->last_mc_mb_var_sum = pic->mc_mb_var_sum; | |
1024 | 1746 | rcc->last_mb_var_sum = pic->mb_var_sum; | |
1025 | } | ||
1026 | 1746 | return q; | |
1027 | } | ||
1028 |