/usr/include/mjpegtools/mpeg2enc/ratectl.hh is in libmjpegtools-dev 1:2.1.0+debian-2.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 | #ifndef _RATECTL_HH
#define _RATECTL_HH
/* (C) 2003 Andrew Stevens */
/* This 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., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include <deque>
#include "mjpeg_types.h"
#include "mpeg2syntaxcodes.h"
class MacroBlock;
class EncoderParams;
class Picture;
/*
Base class for state of rate-controller.
Factory allows us to generate appropriate state
objects for a given rate-controller object.
Set allow us to set set of a rate-controller from
a previously copied state...
*/
class RateCtlState
{
public:
virtual ~RateCtlState() {}
virtual RateCtlState *New() const = 0;
virtual void Set( const RateCtlState &state) = 0;
virtual const RateCtlState &Get() const = 0;
};
class RateCtl
{
public:
RateCtl( EncoderParams &_encparams, RateCtlState &_state );
virtual ~RateCtl() {}
/*********************
*
* Initialise rate control parameters for start of encoding
* based on encoding parameters
*
********************/
virtual void Init() = 0;
/*********************
*
* Setup rate control for a new picture
* IF it is first of sequence new seq. is initialized first
* IF it is first of GOP new GOP is initialized 2nd
* Finally Picture specific initialization is done.
*
********************/
virtual void PictSetup (Picture &picture);
/*********************
*
* Update rate control after coding of new picture (minus padding)
*
********************/
virtual void PictUpdate (Picture &picture, int &padding_needed ) = 0;
virtual int MacroBlockQuant( const MacroBlock &mb) = 0;
virtual int InitialMacroBlockQuant() = 0;
inline RateCtlState *NewState() const { return state.New(); }
inline void SetState( const RateCtlState &toset) { state.Set( toset ); }
inline const RateCtlState &GetState() const { return state.Get(); }
// TODO DEBUG
virtual double SumAvgActivity() = 0;
static double ClipQuant( int q_scale_type, double quant );
static double InvScaleQuant( int q_scale_type, int raw_code );
static int ScaleQuant( int q_scale_type, double quant );
protected:
/*********************
*
* Reinitialize rate control parameters for start of new sequence
*
********************/
virtual void InitSeq( ) = 0;
/*********************
*
* Reinitialize rate control parameters for start of new GOP
*
********************/
virtual void InitGOP( ) = 0;
/* ****************************
*
* Reinitialize rate control parameters for start of new Picture
*
* @return (re)encoding of picture to achieve rate-control mandatory
*
* ****************************/
virtual void InitPict( Picture &picture ) = 0;
double ScaleQuantf( int q_scale_type, double quant );
EncoderParams &encparams;
RateCtlState &state;
};
class Pass1RateCtl : public RateCtl
{
public:
Pass1RateCtl( EncoderParams &encoder, RateCtlState &state );
/*********************
*
* Setup GOP structure for coding from nominal GOP size parameters
*
********************/
virtual void GopSetup( int nb, int np ) = 0;
};
class Pass2RateCtl : public RateCtl
{
public:
Pass2RateCtl( EncoderParams &encoder, RateCtlState &state );
/*********************
*
* Setup GOP structure for coding based on look-ahead data from pass-1
*
********************/
virtual void GopSetup( std::deque<Picture *>::iterator gop_begin,
std::deque<Picture *>::iterator gop_end ) = 0;
/*********************
* @pre PictureSetup called...
* @return Re-encoding of picture to achieve rate control mandatory
*
*********************/
virtual bool ReencodeRequired() const = 0;
virtual unsigned int getEncodedFrames() const = 0;
virtual double getStreamComplexity() const = 0;
};
/*
* Local variables:
* c-file-style: "stroustrup"
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
#endif
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