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/* Copyright (c) MediaArea.net SARL. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license that can
* be found in the License.html file in the root of the source tree.
*/
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//
// Information about FFV1 files
//
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//---------------------------------------------------------------------------
#ifndef MediaInfo_Ffv1H
#define MediaInfo_Ffv1H
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#include "MediaInfo/File__Analyze.h"
//---------------------------------------------------------------------------
namespace MediaInfoLib
{
//***************************************************************************
// Class RangeCoder
//***************************************************************************
const size_t states_size=32;
const size_t state_transitions_size=256;
typedef int8u states[states_size];
typedef int8u state_transitions[state_transitions_size];
class RangeCoder
{
public :
RangeCoder(const int8u* Buffer, size_t Buffer_Size, const state_transitions default_state_transition);
bool get_rac(int8u States[]);
int8u get_symbol_u(states &States);
int8u get_symbol_s(states &States);
int16u Current;
int16u Mask;
state_transitions zero_state;
public : //Temp
state_transitions one_state;
const int8u* Buffer_Cur;
const int8u* Buffer_End;
};
//***************************************************************************
// Class File_Ffv1
//***************************************************************************
class File_Ffv1 : public File__Analyze
{
public :
//In
bool IsOutOfBandData;
//Constructor/Destructor
File_Ffv1();
private :
//Streams management
void Streams_Accept();
//Buffer - Global
void Read_Buffer_Continue();
//Elements
void FrameHeader();
//Range coder
#if MEDIAINFO_TRACE
void Get_RC (states &state, bool &Info, const char* Name);
void Get_RU (states &State, int8u &Info, const char* Name);
void Get_RS (states &State, int8s &Info, const char* Name);
void Skip_RC(states &state, const char* Name);
void Skip_RU(states &State, const char* Name);
void Skip_RS(states &State, const char* Name);
#define Info_RC(_STATE, _INFO, _NAME) bool _INFO; Get_RC (_STATE, _INFO, _NAME)
#define Info_RU(_STATE, _INFO, _NAME) int8u _INFO; Get_RU (_STATE, _INFO, _NAME)
#define Info_RS(_STATE, _INFO, _NAME) int8s _INFO; Get_RS (_STATE, _INFO, _NAME)
#else //MEDIAINFO_TRACE
void Get_RC_ (states &state, bool &Info);
void Get_RU_ (states &State, int8u &Info);
void Get_RS_ (states &State, int8s &Info);
#define Get_RC(Bits, Info, Name) Get_RC_(Bits, Info)
#define Get_RU(Bits, Info, Name) Get_RU_(Bits, Info)
#define Get_RS(Bits, Info, Name) Get_RS_(Bits, Info)
void Skip_RC_(states &state);
void Skip_RU_(states &State);
void Skip_RS_(states &State);
#define Skip_RC(Bits, Name) Skip_RC_(Bits)
#define Skip_RU(Bits, Name) Skip_RU_(Bits)
#define Skip_RS(Bits, Name) Skip_RS_(Bits)
#define Info_RC(_STATE, _INFO, _NAME) Skip_RC_(_STATE)
#define Info_RU(_STATE, _INFO, _NAME) Skip_RU_(_STATE)
#define Info_RS(_STATE, _INFO, _NAME) Skip_RS_(_STATE)
#endif //MEDIAINFO_TRACE
RangeCoder* RC;
};
} //NameSpace
#endif
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