Libav
ratecontrol.h
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1 /*
2  * Ratecontrol
3  * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4  * Copyright (c) 2002-2004 Michael Niedermayer
5  *
6  * This file is part of Libav.
7  *
8  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #ifndef AVCODEC_RATECONTROL_H
24 #define AVCODEC_RATECONTROL_H
25 
31 #include <stdio.h>
32 #include <stdint.h>
33 #include "libavutil/eval.h"
34 
35 typedef struct Predictor{
36  double coeff;
37  double count;
38  double decay;
39 } Predictor;
40 
41 typedef struct RateControlEntry{
42  int pict_type;
43  float qscale;
44  int mv_bits;
47  int misc_bits;
49  uint64_t expected_bits;
51  float new_qscale;
54  int i_count;
56  int f_code;
57  int b_code;
59 
63 typedef struct RateControlContext{
66  double buffer_index;
68  double short_term_qsum;
72  double last_qscale;
73  double last_qscale_for[5];
76  uint64_t i_cplx_sum[5];
77  uint64_t p_cplx_sum[5];
78  uint64_t mv_bits_sum[5];
79  uint64_t qscale_sum[5];
80  int frame_count[5];
82 
88 
89 struct MpegEncContext;
90 
91 /* rate control */
93 float ff_rate_estimate_qscale(struct MpegEncContext *s, int dry_run);
94 void ff_write_pass1_stats(struct MpegEncContext *s);
96 int ff_vbv_update(struct MpegEncContext *s, int frame_size);
97 void ff_get_2pass_fcode(struct MpegEncContext *s);
98 
101 float ff_xvid_rate_estimate_qscale(struct MpegEncContext *s, int dry_run);
102 
103 #endif /* AVCODEC_RATECONTROL_H */