repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
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 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 | #ifndef AVCODEC_RATECONTROL_H | |
| 24 | #define AVCODEC_RATECONTROL_H | |
| 25 | ||
| 26 | /** | |
| 27 | * @file | |
| 28 | * ratecontrol header. | |
| 29 | */ | |
| 30 | ||
| 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; | |
| 45 | int i_tex_bits; | |
| 46 | int p_tex_bits; | |
| 47 | int misc_bits; | |
| 48 | int header_bits; | |
| 49 | uint64_t expected_bits; | |
| 50 | int new_pict_type; | |
| 51 | float new_qscale; | |
| 52 | int64_t mc_mb_var_sum; | |
| 53 | int64_t mb_var_sum; | |
| 54 | int i_count; | |
| 55 | int skip_count; | |
| 56 | int f_code; | |
| 57 | int b_code; | |
| 58 | }RateControlEntry; | |
| 59 | ||
| 60 | /** | |
| 61 | * rate control context. | |
| 62 | */ | |
| 63 | typedef struct RateControlContext{ | |
| 64 | int num_entries; ///< number of RateControlEntries | |
| 65 | RateControlEntry *entry; | |
| 66 | double buffer_index; ///< amount of bits in the video/audio buffer | |
| 67 | Predictor pred[5]; | |
| 68 | double short_term_qsum; ///< sum of recent qscales | |
| 69 | double short_term_qcount; ///< count of recent qscales | |
| 70 | double pass1_rc_eq_output_sum;///< sum of the output of the rc equation, this is used for normalization | |
| 71 | double pass1_wanted_bits; ///< bits which should have been outputed by the pass1 code (including complexity init) | |
| 72 | double last_qscale; | |
| 73 | double last_qscale_for[5]; ///< last qscale for a specific pict type, used for max_diff & ipb factor stuff | |
| 74 | int64_t last_mc_mb_var_sum; | |
| 75 | int64_t last_mb_var_sum; | |
| 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]; | |
| 81 | int last_non_b_pict_type; | |
| 82 | ||
| 83 | void *non_lavc_opaque; ///< context for non lavc rc code (for example xvid) | |
| 84 | float dry_run_qscale; ///< for xvid rc | |
| 85 | int last_picture_number; ///< for xvid rc | |
| 86 | AVExpr * rc_eq_eval; | |
| 87 | }RateControlContext; | |
| 88 | ||
| 89 | struct MpegEncContext; | |
| 90 | ||
| 91 | /* rate control */ | |
| 92 | int ff_rate_control_init(struct MpegEncContext *s); | |
| 93 | float ff_rate_estimate_qscale(struct MpegEncContext *s, int dry_run); | |
| 94 | void ff_write_pass1_stats(struct MpegEncContext *s); | |
| 95 | void ff_rate_control_uninit(struct MpegEncContext *s); | |
| 96 | int ff_vbv_update(struct MpegEncContext *s, int frame_size); | |
| 97 | void ff_get_2pass_fcode(struct MpegEncContext *s); | |
| 98 | ||
| 99 | int ff_xvid_rate_control_init(struct MpegEncContext *s); | |
| 100 | void ff_xvid_rate_control_uninit(struct MpegEncContext *s); | |
| 101 | float ff_xvid_rate_estimate_qscale(struct MpegEncContext *s, int dry_run); | |
| 102 | ||
| 103 | #endif /* AVCODEC_RATECONTROL_H */ |