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|
/*****************************************************************
|
| AP4 - PIFF support
|
| Copyright 2002-2009 Axiomatic Systems, LLC
|
|
| This file is part of Bento4/AP4 (MP4 Atom Processing Library).
|
| Unless you have obtained Bento4 under a difference license,
| this version of Bento4 is Bento4|GPL.
| Bento4|GPL 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, or (at your option)
| any later version.
|
| Bento4|GPL 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 Bento4|GPL; see the file COPYING. If not, write to the
| Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
| 02111-1307, USA.
|
****************************************************************/
#ifndef _AP4_PIFF_H_
#define _AP4_PIFF_H_
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "Ap4Types.h"
#include "Ap4SampleEntry.h"
#include "Ap4Atom.h"
#include "Ap4AtomFactory.h"
#include "Ap4SampleDescription.h"
#include "Ap4Processor.h"
#include "Ap4Protection.h"
#include "Ap4UuidAtom.h"
#include "Ap4CommonEncryption.h"
/*----------------------------------------------------------------------
| class references
+---------------------------------------------------------------------*/
class AP4_StreamCipher;
class AP4_CbcStreamCipher;
class AP4_CtrStreamCipher;
class AP4_PiffSampleEncryptionAtom;
class AP4_FragmentSampleTable;
/*----------------------------------------------------------------------
| constants
+---------------------------------------------------------------------*/
const AP4_UI32 AP4_PROTECTION_SCHEME_TYPE_PIFF = AP4_ATOM_TYPE('p','i','f','f');
const AP4_UI32 AP4_PROTECTION_SCHEME_VERSION_PIFF_10 = 0x00010000;
const AP4_UI32 AP4_PROTECTION_SCHEME_VERSION_PIFF_11 = 0x00010001;
const AP4_UI32 AP4_PIFF_BRAND = AP4_ATOM_TYPE('p','i','f','f');
extern AP4_UI08 const AP4_UUID_PIFF_TRACK_ENCRYPTION_ATOM[16];
extern AP4_UI08 const AP4_UUID_PIFF_SAMPLE_ENCRYPTION_ATOM[16];
typedef enum {
AP4_PIFF_CIPHER_MODE_CTR,
AP4_PIFF_CIPHER_MODE_CBC
} AP4_PiffCipherMode;
/*----------------------------------------------------------------------
| AP4_PiffTrackEncryptionAtom
+---------------------------------------------------------------------*/
class AP4_PiffTrackEncryptionAtom : public AP4_UuidAtom, public AP4_CencTrackEncryption
{
public:
AP4_IMPLEMENT_DYNAMIC_CAST_D2(AP4_PiffTrackEncryptionAtom, AP4_UuidAtom, AP4_CencTrackEncryption)
// class methods
static AP4_PiffTrackEncryptionAtom* Create(AP4_Size size,
AP4_ByteStream& stream);
// constructors
AP4_PiffTrackEncryptionAtom(AP4_UI32 default_algorithm_id,
AP4_UI08 default_iv_size,
const AP4_UI08* default_kid);
// methods
virtual AP4_Result InspectFields(AP4_AtomInspector& inspector);
virtual AP4_Result WriteFields(AP4_ByteStream& stream);
private:
// methods
AP4_PiffTrackEncryptionAtom(AP4_UI32 size,
AP4_UI08 version,
AP4_UI32 flags,
AP4_ByteStream& stream);
};
/*----------------------------------------------------------------------
| AP4_PiffSampleEncryptionAtom
+---------------------------------------------------------------------*/
class AP4_PiffSampleEncryptionAtom : public AP4_UuidAtom, public AP4_CencSampleEncryption
{
public:
AP4_IMPLEMENT_DYNAMIC_CAST_D2(AP4_PiffSampleEncryptionAtom, AP4_UuidAtom, AP4_CencSampleEncryption)
// class methods
static AP4_PiffSampleEncryptionAtom* Create(AP4_Size size,
AP4_ByteStream& stream);
// constructors
AP4_PiffSampleEncryptionAtom(AP4_UI08 iv_size);
AP4_PiffSampleEncryptionAtom(AP4_UI32 algorithm_id,
AP4_UI08 iv_size,
const AP4_UI08* kid);
// methods
virtual AP4_Result InspectFields(AP4_AtomInspector& inspector);
virtual AP4_Result WriteFields(AP4_ByteStream& stream);
private:
// methods
AP4_PiffSampleEncryptionAtom(AP4_UI32 size,
AP4_UI08 version,
AP4_UI32 flags,
AP4_ByteStream& stream);
};
#endif // _AP4_PIFF_H_
|
