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/*
* dxr3pesframe.h
*
* Copyright (C) 2002-2004 Kai Möller
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* 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 Lesser 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.
*
*/
#ifndef _DXR3PESFRAME_H_
#define _DXR3PESFRAME_H_
#include <assert.h>
#include <stdint.h>
// ==================================
const int ASPECTRATIO_4_3 = 0;
const int ASPECTRATIO_16_9 = 1;
// ==================================
enum eVideoFrameType
{
I_FRAME,
P_FRAME,
B_FRAME,
UNKNOWN_FRAME
};
// ==================================
// XXX: Should we use here std:vector?
template <class T>
class cDxr3SafeArray
{
public:
// ==================================
enum eSafeArrayException
{
SAFE_ARRAY_INDEX_OUT_OF_BOUND
};
cDxr3SafeArray(T* pBuf, uint32_t length) : m_pBuf(pBuf), m_length(length) {};
cDxr3SafeArray(const cDxr3SafeArray& from) : m_pBuf(from.m_pBuf), m_length(from.m_length) {};
virtual ~cDxr3SafeArray() {};
T& operator[](uint32_t index) throw (eSafeArrayException) { if (index >= m_length) throw(SAFE_ARRAY_INDEX_OUT_OF_BOUND); return m_pBuf[index];};
cDxr3SafeArray SubArray(uint32_t offset, uint32_t length) { if (offset + length > m_length) throw(SAFE_ARRAY_INDEX_OUT_OF_BOUND); return cDxr3SafeArray(m_pBuf + offset, length);};
uint32_t GetLength(void) { return m_length; };
protected:
T* m_pBuf;
uint32_t m_length;
private:
cDxr3SafeArray(); // no standard constructor
};
// ==================================
// pes - packetized elementary stream
class cDxr3PesFrame
{
public:
// ==================================
enum ePesDataType
{
PES_AUDIO_DATA,
PES_VIDEO_DATA,
PES_PRIVATE_DATA,
PES_UNKNOWN_DATA
};
// ==================================
enum ePesFrameError
{
PES_GENERAL_ERROR
};
public:
cDxr3PesFrame() : m_pesDataType(PES_UNKNOWN_DATA), m_bValid(false), m_pPesStart(0), m_pEsStart(0)
, m_esLength(0), m_pts(0), m_videoFrameType(UNKNOWN_FRAME), m_aspectRatio(m_staticAspectRatio)
, m_horizontalSize(m_staticHorizontalSize), m_streamId(0), m_pNextStart(0), m_remainingLength(0)
, m_offset(0) {};
virtual ~cDxr3PesFrame() {}
bool ExtractNextFrame(const uint8_t* pBuf, uint32_t length) throw (ePesFrameError);
ePesDataType GetPesDataType(void) const { assert(m_bValid); return m_pesDataType; };
const uint8_t* GetPesStart(void) const { assert(m_bValid); return m_pPesStart; };
const uint8_t* GetEsStart(void) const { assert(m_bValid); return m_pEsStart; };
uint32_t GetEsLength(void) const { assert(m_bValid); return m_esLength; };
const uint8_t* GetNextStart(void) const { return m_pNextStart;};
uint32_t GetRemainingLength(void) const { return m_remainingLength;};
uint32_t GetPts(void) const { assert(m_bValid); return m_pts; };
eVideoFrameType GetFrameType(void) const { assert(m_bValid); assert(m_pesDataType == PES_VIDEO_DATA); return m_videoFrameType;};
uint32_t GetAspectRatio(void) const { assert(m_bValid); assert(m_pesDataType == PES_VIDEO_DATA); return m_aspectRatio;};
uint32_t GetHorizontalSize(void) const { assert(m_bValid); assert(m_pesDataType == PES_VIDEO_DATA); return m_horizontalSize;};
uint8_t GetStreamId(void) const { assert(m_bValid); assert(m_pesDataType == PES_VIDEO_DATA); return m_streamId;};
int GetOffset(void) const { assert(m_bValid); return m_offset;};
bool IsValid(void) { return m_bValid; };
protected:
bool IsPesHeader(cDxr3SafeArray<uint8_t> header) throw (cDxr3SafeArray<uint8_t>::eSafeArrayException);
void ExtractPts(cDxr3SafeArray<uint8_t> ptsData) throw (cDxr3SafeArray<uint8_t>::eSafeArrayException);
int ExtractVideoData(cDxr3SafeArray<uint8_t> esFrame) throw (cDxr3SafeArray<uint8_t>::eSafeArrayException);
void InitData(void)
{
m_pesDataType = PES_UNKNOWN_DATA;
m_bValid = false;
m_pPesStart = 0;
m_pEsStart = 0;
m_esLength = 0;
m_pts = 0;
m_videoFrameType = UNKNOWN_FRAME;
m_aspectRatio = m_staticAspectRatio;
m_horizontalSize = m_staticHorizontalSize;
m_streamId = 0;
m_pNextStart = 0;
m_remainingLength = 0;
m_offset = 0;
}
ePesDataType m_pesDataType;
bool m_bValid;
const uint8_t* m_pPesStart;
const uint8_t* m_pEsStart;
uint32_t m_esLength;
uint32_t m_pts;
eVideoFrameType m_videoFrameType;
uint32_t m_aspectRatio;
uint32_t m_horizontalSize;
uint8_t m_streamId;
const uint8_t* m_pNextStart;
uint32_t m_remainingLength;
int m_offset;
static uint32_t m_staticAspectRatio;
static uint32_t m_staticHorizontalSize;
protected:
static const uint32_t MAX_PES_HEADER_SIZE;
private:
cDxr3PesFrame(cDxr3PesFrame&); // no copy constructor
};
#endif /*_DXR3PESFRAME_H_*/
// Local variables:
// mode: c++
// c-file-style: "stroustrup"
// c-file-offsets: ((inline-open . 0))
// indent-tabs-mode: t
// End:
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