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/* ------------------------------------------------------------------
* Copyright (C) 1998-2009 PacketVideo
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* express or implied.
* See the License for the specific language governing permissions
* and limitations under the License.
* -------------------------------------------------------------------
#ifndef _RATE_CONTROL_H_
#define _RATE_CONTROL_H_
#include "mp4def.h"
typedef struct tagdataPointArray
Int Qp;
Int Rp;
float Mp; /* for MB-based RC, 3/14/01 */
struct tagdataPointArray *next;
struct tagdataPointArray *prev;
} dataPointArray;
typedef struct
Int alpha; /* weight for I frame */
Int Rs; /*bit rate for the sequence (or segment) e.g., 24000 bits/sec */
Int Rc; /*bits used for the current frame. It is the bit count obtained after encoding. */
Int Rp; /*bits to be removed from the buffer per picture. */
/*? is this the average one, or just the bits coded for the previous frame */
Int Rps; /*bit to be removed from buffer per src frame */
float Ts; /*number of seconds for the sequence (or segment). e.g., 10 sec */
float Ep;
float Ec; /*mean absolute difference for the current frame after motion compensation.*/
/*If the macroblock is intra coded, the original spatial pixel values are summed.*/
Int Qc; /*quantization level used for the current frame. */
Int Nr; /*number of P frames remaining for encoding.*/
Int Rr; /*number of bits remaining for encoding this sequence (or segment).*/
Int Rr_Old;/* 12/24/00 */
Int T; /*target bit to be used for the current frame.*/
Int S; /*number of bits used for encoding the previous frame.*/
Int Hc; /*header and motion vector bits used in the current frame. It includes all the information except to the residual information.*/
Int Hp; /*header and motion vector bits used in the previous frame. It includes all the information except to the residual information.*/
Int Ql; /*quantization level used in the previous frame */
Int Bs; /*buffer size e.g., R/2 */
Int B; /*current buffer level e.g., R/4 - start from the middle of the buffer */
float X1;
float X2;
float X11;
float M; /*safe margin for the buffer */
float smTick; /*ratio of src versus enc frame rate */
double remnant; /*remainder frame of src/enc frame for fine frame skipping */
Int timeIncRes; /* vol->timeIncrementResolution */
dataPointArray *end; /*quantization levels for the past (20) frames */
Int frameNumber; /* ranging from 0 to 20 nodes*/
Int w;
Int Nr_Original;
Int Nr_Old, Nr_Old2;
Int skip_next_frame;
Int Qdep; /* smooth Q adjustment */
Int fine_frame_skip;
Int VBR_Enabled;
Int no_frame_skip;
Int no_pre_skip;
Int totalFrameNumber; /* total coded frames, for debugging!!*/
char oFirstTime;
/* BX rate control */
Int TMN_W;
Int VBV_fullness;
Int max_BitVariance_num; /* the number of the maximum bit variance within the given buffer with the unit of 10% of bitrate/framerate*/
Int encoded_frames; /* counter for all encoded frames */
float framerate;
Int bitrate;
Int low_bound; /* bound for underflow detection, usually low_bound=-Bs/2, but could be changed in H.263 mode */
Int VBV_fullness_offset; /* offset of VBV_fullness, usually is zero, but can be changed in H.263 mode*/
/* End BX */
} rateControl;
#endif /* _RATE_CONTROL_H_ */