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|
/*****************************************************************
|
| AP4 - Marlin File Format support
|
| Copyright 2002-2008 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_MARLIN_H_
#define _AP4_MARLIN_H_
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "Ap4Types.h"
#include "Ap4SampleEntry.h"
#include "Ap4Atom.h"
#include "Ap4AtomFactory.h"
#include "Ap4SampleDescription.h"
#include "Ap4Processor.h"
#include "Ap4Protection.h"
#include "Ap4TrefTypeAtom.h"
#include "Ap4ObjectDescriptor.h"
#include "Ap4Command.h"
#include "Ap4UuidAtom.h"
#include "Ap4OmaDcf.h"
/*----------------------------------------------------------------------
| constants
+---------------------------------------------------------------------*/
const AP4_UI32 AP4_MARLIN_BRAND_MGSV = AP4_ATOM_TYPE('M','G','S','V');
const AP4_UI16 AP4_MARLIN_IPMPS_TYPE_MGSV = 0xA551;
const AP4_UI32 AP4_PROTECTION_SCHEME_TYPE_MARLIN_ACBC = AP4_ATOM_TYPE('A','C','B','C');
const AP4_UI32 AP4_PROTECTION_SCHEME_TYPE_MARLIN_ACGK = AP4_ATOM_TYPE('A','C','G','K');
const AP4_Atom::Type AP4_ATOM_TYPE_SATR = AP4_ATOM_TYPE('s','a','t','r');
const AP4_Atom::Type AP4_ATOM_TYPE_STYP = AP4_ATOM_TYPE('s','t','y','p');
const AP4_Atom::Type AP4_ATOM_TYPE_HMAC = AP4_ATOM_TYPE('h','m','a','c');
const AP4_Atom::Type AP4_ATOM_TYPE_GKEY = AP4_ATOM_TYPE('g','k','e','y');
const char* const AP4_MARLIN_IPMP_STYP_VIDEO = "urn:marlin:organization:sne:content-type:video";
const char* const AP4_MARLIN_IPMP_STYP_AUDIO = "urn:marlin:organization:sne:content-type:audio";
const AP4_UI08 AP4_MARLIN_PSSH_SYSTEM_ID[16] = {
0x69, 0xF9, 0x08, 0xAF, 0x48, 0x16, 0x46, 0xEA, 0x91, 0x0C, 0xCD, 0x5D, 0xCC, 0xCB, 0x0A, 0x3A
};
/*----------------------------------------------------------------------
| AP4_MarlinIpmpParser
+---------------------------------------------------------------------*/
class AP4_MarlinIpmpParser
{
public:
// types
struct SinfEntry {
SinfEntry(AP4_UI32 track_id, AP4_ContainerAtom* sinf) :
m_TrackId(track_id), m_Sinf(sinf) {}
~SinfEntry() { delete m_Sinf; }
AP4_UI32 m_TrackId;
AP4_ContainerAtom* m_Sinf;
};
// methods
static AP4_Result Parse(AP4_AtomParent& top_level,
AP4_ByteStream& stream,
AP4_List<SinfEntry>& sinf_entries,
bool remove_od_data=false);
private:
AP4_MarlinIpmpParser() {} // this class can't be instantiated
};
/*----------------------------------------------------------------------
| AP4_MarlinIpmpSampleDecrypter
+---------------------------------------------------------------------*/
class AP4_MarlinIpmpSampleDecrypter : public AP4_SampleDecrypter
{
public:
/**
* Create a sample decrypter given the top-level atoms, the track ID, and the key
*/
static AP4_Result Create(AP4_AtomParent& top_level,
const AP4_UI08* key,
AP4_Size key_size,
AP4_BlockCipherFactory* block_cipher_factory,
AP4_MarlinIpmpSampleDecrypter*& sample_decrypter);
/**
* Create a sample decrypter given the key (can't be used with group keys, since the group
* key info needs to be parsed from the top level atoms)
*/
static AP4_Result Create(const AP4_UI08* key,
AP4_Size key_size,
AP4_BlockCipherFactory* block_cipher_factory,
AP4_MarlinIpmpSampleDecrypter*& sample_decrypter);
~AP4_MarlinIpmpSampleDecrypter();
// AP4_SampleDecrypter methods
AP4_Size GetDecryptedSampleSize(AP4_Sample& sample);
AP4_Result DecryptSampleData(AP4_UI32 pool_id, AP4_DataBuffer& data_in,
AP4_DataBuffer& data_out,
const AP4_UI08* iv = NULL);
private:
AP4_MarlinIpmpSampleDecrypter(AP4_StreamCipher* cipher) : m_Cipher(cipher) {}
AP4_StreamCipher* m_Cipher;
};
/*----------------------------------------------------------------------
| AP4_MarlinIpmpDecryptingProcessor
+---------------------------------------------------------------------*/
class AP4_MarlinIpmpDecryptingProcessor : public AP4_Processor
{
public:
// constructor and destructor
AP4_MarlinIpmpDecryptingProcessor(const AP4_ProtectionKeyMap* key_map = NULL,
AP4_BlockCipherFactory* block_cipher_factory = NULL);
~AP4_MarlinIpmpDecryptingProcessor();
// accessors
AP4_ProtectionKeyMap& GetKeyMap() { return m_KeyMap; }
// methods
virtual AP4_Result Initialize(AP4_AtomParent& top_level,
AP4_ByteStream& stream,
ProgressListener* listener);
virtual AP4_Processor::TrackHandler* CreateTrackHandler(AP4_TrakAtom* trak, AP4_TrexAtom* trex);
private:
// members
AP4_BlockCipherFactory* m_BlockCipherFactory;
AP4_ProtectionKeyMap m_KeyMap;
AP4_List<AP4_MarlinIpmpParser::SinfEntry> m_SinfEntries;
};
/*----------------------------------------------------------------------
| AP4_MarlinIpmpTrackDecrypter
+---------------------------------------------------------------------*/
class AP4_MarlinIpmpTrackDecrypter : public AP4_Processor::TrackHandler
{
public:
// class methods
static AP4_Result Create(AP4_TrakAtom *trak, AP4_TrexAtom *trex,
AP4_BlockCipherFactory& cipher_factory,
const AP4_UI08* key,
AP4_Size key_size,
AP4_MarlinIpmpTrackDecrypter*& decrypter);
// constructor and destructor
AP4_MarlinIpmpTrackDecrypter(AP4_TrakAtom *trak, AP4_TrexAtom *trex) : AP4_Processor::TrackHandler(trak, trex), m_SampleDecrypter(NULL) {};
~AP4_MarlinIpmpTrackDecrypter();
// AP4_Processor::TrackHandler methods
virtual AP4_Size GetProcessedSampleSize(AP4_Sample& sample);
virtual AP4_Result ProcessSample(AP4_DataBuffer& data_in,
AP4_DataBuffer& data_out);
private:
// constructor
AP4_MarlinIpmpTrackDecrypter(AP4_TrakAtom *trak, AP4_TrexAtom *trex, AP4_SampleDecrypter* sample_decrypter) :
AP4_Processor::TrackHandler(trak, trex), m_SampleDecrypter(sample_decrypter) {}
// members
AP4_SampleDecrypter* m_SampleDecrypter;
};
/*----------------------------------------------------------------------
| AP4_MarlinIpmpEncryptingProcessor
+---------------------------------------------------------------------*/
class AP4_MarlinIpmpEncryptingProcessor : public AP4_Processor
{
public:
// constructor
AP4_MarlinIpmpEncryptingProcessor(bool use_group_key = false,
const AP4_ProtectionKeyMap* key_map = NULL,
AP4_BlockCipherFactory* block_cipher_factory = NULL);
// accessors
AP4_ProtectionKeyMap& GetKeyMap() { return m_KeyMap; }
AP4_TrackPropertyMap& GetPropertyMap() { return m_PropertyMap; }
// AP4_Processor methods
virtual AP4_Result Initialize(AP4_AtomParent& top_level,
AP4_ByteStream& stream,
AP4_Processor::ProgressListener* listener = NULL);
virtual AP4_Processor::TrackHandler* CreateTrackHandler(AP4_TrakAtom* trak);
private:
// members
AP4_BlockCipherFactory* m_BlockCipherFactory;
bool m_UseGroupKey;
AP4_ProtectionKeyMap m_KeyMap;
AP4_TrackPropertyMap m_PropertyMap;
};
/*----------------------------------------------------------------------
| AP4_MarlinIpmpTrackEncrypter
+---------------------------------------------------------------------*/
class AP4_MarlinIpmpTrackEncrypter : public AP4_Processor::TrackHandler
{
public:
// class methods
static AP4_Result Create(AP4_BlockCipherFactory& cipher_factory,
const AP4_UI08* key,
AP4_Size key_size,
const AP4_UI08* iv,
AP4_Size iv_size,
AP4_MarlinIpmpTrackEncrypter*& encrypter);
// destructor
~AP4_MarlinIpmpTrackEncrypter();
// AP4_Processor::TrackHandler methods
virtual AP4_Size GetProcessedSampleSize(AP4_Sample& sample);
virtual AP4_Result ProcessSample(AP4_DataBuffer& data_in,
AP4_DataBuffer& data_out);
private:
// constructor
AP4_MarlinIpmpTrackEncrypter(AP4_StreamCipher* cipher, const AP4_UI08* iv);
// members
AP4_UI08 m_IV[16];
AP4_StreamCipher* m_Cipher;
};
/*----------------------------------------------------------------------
| AP4_MkidAtom
+---------------------------------------------------------------------*/
class AP4_MkidAtom : public AP4_Atom
{
public:
AP4_IMPLEMENT_DYNAMIC_CAST_D(AP4_MkidAtom, AP4_Atom)
// types
struct Entry {
AP4_UI08 m_KID[16];
AP4_String m_ContentId;
};
// virtual constructor
static AP4_MkidAtom* Create(AP4_Size size, AP4_ByteStream& stream);
// constructors
AP4_MkidAtom();
// methods
virtual AP4_Result InspectFields(AP4_AtomInspector& inspector);
virtual AP4_Result WriteFields(AP4_ByteStream& stream);
// accessors
const AP4_Array<Entry>& GetEntries() { return m_Entries; }
AP4_Result AddEntry(const AP4_UI08* kid, const char* content_id);
private:
// methods
AP4_MkidAtom(AP4_Size size,
AP4_UI08 version,
AP4_UI32 flags,
AP4_ByteStream& stream);
// members
AP4_Array<Entry> m_Entries;
};
#endif // _AP4_MARLIN_H_
|
