yading@10: /*
yading@10:  * Ratecontrol
yading@10:  * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
yading@10:  * Copyright (c) 2002-2004 Michael Niedermayer
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #ifndef AVCODEC_RATECONTROL_H
yading@10: #define AVCODEC_RATECONTROL_H
yading@10: 
yading@10: /**
yading@10:  * @file
yading@10:  * ratecontrol header.
yading@10:  */
yading@10: 
yading@10: #include <stdio.h>
yading@10: #include <stdint.h>
yading@10: #include "libavutil/eval.h"
yading@10: 
yading@10: typedef struct Predictor{
yading@10:     double coeff;
yading@10:     double count;
yading@10:     double decay;
yading@10: } Predictor;
yading@10: 
yading@10: typedef struct RateControlEntry{
yading@10:     int pict_type;
yading@10:     float qscale;
yading@10:     int mv_bits;
yading@10:     int i_tex_bits;
yading@10:     int p_tex_bits;
yading@10:     int misc_bits;
yading@10:     int header_bits;
yading@10:     uint64_t expected_bits;
yading@10:     int new_pict_type;
yading@10:     float new_qscale;
yading@10:     int mc_mb_var_sum;
yading@10:     int mb_var_sum;
yading@10:     int i_count;
yading@10:     int skip_count;
yading@10:     int f_code;
yading@10:     int b_code;
yading@10: }RateControlEntry;
yading@10: 
yading@10: /**
yading@10:  * rate control context.
yading@10:  */
yading@10: typedef struct RateControlContext{
yading@10:     int num_entries;              ///< number of RateControlEntries
yading@10:     RateControlEntry *entry;
yading@10:     double buffer_index;          ///< amount of bits in the video/audio buffer
yading@10:     Predictor pred[5];
yading@10:     double short_term_qsum;       ///< sum of recent qscales
yading@10:     double short_term_qcount;     ///< count of recent qscales
yading@10:     double pass1_rc_eq_output_sum;///< sum of the output of the rc equation, this is used for normalization
yading@10:     double pass1_wanted_bits;     ///< bits which should have been outputed by the pass1 code (including complexity init)
yading@10:     double last_qscale;
yading@10:     double last_qscale_for[5];    ///< last qscale for a specific pict type, used for max_diff & ipb factor stuff
yading@10:     int last_mc_mb_var_sum;
yading@10:     int last_mb_var_sum;
yading@10:     uint64_t i_cplx_sum[5];
yading@10:     uint64_t p_cplx_sum[5];
yading@10:     uint64_t mv_bits_sum[5];
yading@10:     uint64_t qscale_sum[5];
yading@10:     int frame_count[5];
yading@10:     int last_non_b_pict_type;
yading@10: 
yading@10:     void *non_lavc_opaque;        ///< context for non lavc rc code (for example xvid)
yading@10:     float dry_run_qscale;         ///< for xvid rc
yading@10:     int last_picture_number;      ///< for xvid rc
yading@10:     AVExpr * rc_eq_eval;
yading@10: }RateControlContext;
yading@10: 
yading@10: struct MpegEncContext;
yading@10: 
yading@10: /* rate control */
yading@10: int ff_rate_control_init(struct MpegEncContext *s);
yading@10: float ff_rate_estimate_qscale(struct MpegEncContext *s, int dry_run);
yading@10: void ff_write_pass1_stats(struct MpegEncContext *s);
yading@10: void ff_rate_control_uninit(struct MpegEncContext *s);
yading@10: int ff_vbv_update(struct MpegEncContext *s, int frame_size);
yading@10: void ff_get_2pass_fcode(struct MpegEncContext *s);
yading@10: 
yading@10: int ff_xvid_rate_control_init(struct MpegEncContext *s);
yading@10: void ff_xvid_rate_control_uninit(struct MpegEncContext *s);
yading@10: float ff_xvid_rate_estimate_qscale(struct MpegEncContext *s, int dry_run);
yading@10: 
yading@10: #endif /* AVCODEC_RATECONTROL_H */