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/******************************************************************************
*
* XviD VBR Library
*
* Copyright (C) 2002 Edouard Gomez <ed.gomez@wanadoo.fr>
*
* The curve treatment algorithm is based on work done by Foxer <email?> and
* Dirk Knop <dknop@gwdg.de> for the XviD vfw dynamic library.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
#ifndef XVID_VBR_H
#define XVID_VBR_H
#define VBR_VERSION 0
/******************************************************************************
* Function types used in the vbr controler
*****************************************************************************/
typedef int (vbr_init_function)(void *state);
typedef vbr_init_function *vbr_init_function_ptr;
typedef int (vbr_get_quant_function)(void *state);
typedef vbr_get_quant_function *vbr_get_quant_function_ptr;
typedef int (vbr_get_intra_function)(void *state);
typedef vbr_get_intra_function *vbr_get_intra_function_ptr;
typedef int (vbr_update_function)(void *state,
int quant,
int intra,
int header_bytes,
int total_bytes,
int kblocks,
int mblocks,
int ublocks);
typedef vbr_update_function *vbr_update_function_ptr;
typedef int (vbr_finish_function)(void *state);
typedef vbr_finish_function *vbr_finish_function_ptr;
/******************************************************************************
* The VBR CONTROLER structure - the spin of the library
*****************************************************************************/
typedef struct _vbr_control_t
{
/* All modes - specifies what VBR algorithm has to be used */
int mode;
/* All modes - specifies what fps the movie uses */
float fps;
/* All modes */
int debug;
/*
* For VBR_MODE_2PASS_1/2 - specifies from/to what file the vbr
* controller has to write/read stats
*/
char *filename;
/* For VBR_MODE_2PASS_2 - Target size */
int desired_bitrate;
/* For VBR_MODE_2PASS_2 - Credits parameters */
int credits_mode;
int credits_start;
int credits_start_begin;
int credits_start_end;
int credits_end;
int credits_end_begin;
int credits_end_end;
int credits_quant_ratio;
int credits_fixed_quant;
int credits_quant_i;
int credits_quant_p;
int credits_start_size;
int credits_end_size;
/* For VBR_MODE_2PASS_2 - keyframe parameters */
int keyframe_boost;
int kftreshold;
int kfreduction;
int min_key_interval;
int max_key_interval;
/* For VBR_MODE_2PASS_2 - Normal curve */
int curve_compression_high;
int curve_compression_low;
/* For VBR_MODE_2PASS_2 - Alternate curve parameters */
int use_alt_curve;
int alt_curve_type;
int alt_curve_low_dist;
int alt_curve_high_dist;
int alt_curve_min_rel_qual;
int alt_curve_use_auto;
int alt_curve_auto_str;
int alt_curve_use_auto_bonus_bias;
int alt_curve_bonus_bias;
int bitrate_payback_method;
int bitrate_payback_delay;
int max_iquant;
int min_iquant;
int max_pquant;
int min_pquant;
int twopass_max_bitrate;
int twopass_max_overflow_improvement;
int twopass_max_overflow_degradation;
/*
* For VBR_MODE_FIXED_QUANT - the quantizer that has to be used for all
* frames
*/
int fixed_quant;
/* ----------- Internal data - Do not modify ----------- */
void *debug_file;
void *pass1_file;
long long desired_size;
int cur_frame;
int nb_frames;
int nb_keyframes;
int *keyframe_locations;
int last_keyframe;
double credits_start_curve;
double credits_end_curve;
double movie_curve;
double average_frame;
double alt_curve_low;
double alt_curve_low_diff;
double alt_curve_high;
double alt_curve_high_diff;
double alt_curve_mid_qual;
double alt_curve_qual_dev;
double curve_bias_bonus;
double curve_comp_scale;
double curve_comp_error;
int pass1_quant;
int pass1_intra;
int pass1_bytes;
int bytes1;
int bytes2;
int desired_bytes2;
int max_framesize;
int last_quant;
int quant_count[32];
double quant_error[32];
int overflow;
int KFoverflow;
int KFoverflow_partial;
int KF_idx;
int debug_quant_count[32];
/* ----------- Internal data - do not modify ----------- */
vbr_init_function_ptr init;
vbr_get_quant_function_ptr getquant;
vbr_get_intra_function_ptr getintra;
vbr_update_function_ptr update;
vbr_finish_function_ptr finish;
}vbr_control_t;
/******************************************************************************
* Constants
*****************************************************************************/
/* Constants for the mode member */
#define VBR_MODE_1PASS 0x01
#define VBR_MODE_2PASS_1 0x02
#define VBR_MODE_2PASS_2 0x04
#define VBR_MODE_FIXED_QUANT 0x08
/* Constants for the credits mode */
#define VBR_CREDITS_MODE_RATE 0x01
#define VBR_CREDITS_MODE_QUANT 0x02
#define VBR_CREDITS_MODE_SIZE 0x04
/* Alternate curve treatment types */
#define VBR_ALT_CURVE_SOFT 0x01
#define VBR_ALT_CURVE_LINEAR 0x02
#define VBR_ALT_CURVE_AGGRESIVE 0x04
/* Payback modes */
#define VBR_PAYBACK_BIAS 0x01
#define VBR_PAYBACK_PROPORTIONAL 0x02
/******************************************************************************
* VBR API
*****************************************************************************/
extern int vbrSetDefaults(vbr_control_t *state);
extern int vbrInit(vbr_control_t *state);
extern int vbrGetQuant(vbr_control_t *state);
extern int vbrGetIntra(vbr_control_t *state);
extern int vbrUpdate(vbr_control_t *state,
int quant,
int intra,
int header_bytes,
int total_bytes,
int kblocks,
int mblocks,
int ublocks);
extern int vbrFinish(vbr_control_t *state);
#endif
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