mirror of
https://github.com/axiomatic-systems/Bento4.git
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123 lines
4.8 KiB
C++
123 lines
4.8 KiB
C++
/*****************************************************************
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| AP4 - senc Atoms
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| Copyright 2002-2011 Axiomatic Systems, LLC
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| This file is part of Bento4/AP4 (MP4 Atom Processing Library).
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| Unless you have obtained Bento4 under a difference license,
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| this version of Bento4 is Bento4|GPL.
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| Bento4|GPL is free software; you can redistribute it and/or modify
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| it under the terms of the GNU General Public License as published by
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| the Free Software Foundation; either version 2, or (at your option)
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| any later version.
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| Bento4|GPL is distributed in the hope that it will be useful,
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| but WITHOUT ANY WARRANTY; without even the implied warranty of
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| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| GNU General Public License for more details.
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| You should have received a copy of the GNU General Public License
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| along with Bento4|GPL; see the file COPYING. If not, write to the
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| Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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| 02111-1307, USA.
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****************************************************************/
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/*----------------------------------------------------------------------
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| includes
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+---------------------------------------------------------------------*/
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#include "Ap4SencAtom.h"
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#include "Ap4Utils.h"
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/*----------------------------------------------------------------------
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| dynamic cast support
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+---------------------------------------------------------------------*/
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AP4_DEFINE_DYNAMIC_CAST_ANCHOR(AP4_SencAtom)
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/*----------------------------------------------------------------------
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| AP4_SencAtom::Create
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+---------------------------------------------------------------------*/
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AP4_SencAtom*
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AP4_SencAtom::Create(AP4_Size size, AP4_ByteStream& stream)
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{
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AP4_UI08 version;
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AP4_UI32 flags;
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if (size < AP4_FULL_ATOM_HEADER_SIZE) return NULL;
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if (AP4_FAILED(ReadFullHeader(stream, version, flags))) return NULL;
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if (version != 0) return NULL;
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return new AP4_SencAtom(size, version, flags, stream);
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}
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/*----------------------------------------------------------------------
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| AP4_SencAtom::AP4_SencAtom
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+---------------------------------------------------------------------*/
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AP4_SencAtom::AP4_SencAtom(AP4_UI08 iv_size) :
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AP4_Atom(AP4_ATOM_TYPE_SENC, AP4_FULL_ATOM_HEADER_SIZE+4, 0, 0),
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AP4_CencSampleEncryption(*((AP4_Atom*)this), iv_size)
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{
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m_Outer = *this;
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}
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/*----------------------------------------------------------------------
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| AP4_SencAtom::AP4_SencAtom
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+---------------------------------------------------------------------*/
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AP4_SencAtom::AP4_SencAtom(AP4_UI32 size,
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AP4_UI08 version,
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AP4_UI32 flags,
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AP4_ByteStream& stream) :
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AP4_Atom(AP4_ATOM_TYPE_SENC, size, version, flags),
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AP4_CencSampleEncryption(*this, size, stream)
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{
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}
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/*----------------------------------------------------------------------
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| AP4_SencAtom::AP4_SencAtom
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+---------------------------------------------------------------------*/
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AP4_SencAtom::AP4_SencAtom(AP4_UI32 algorithm_id,
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AP4_UI08 iv_size,
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const AP4_UI08* kid) :
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AP4_Atom(AP4_ATOM_TYPE_SENC, AP4_FULL_ATOM_HEADER_SIZE+20+4, 0,
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AP4_CENC_SAMPLE_ENCRYPTION_FLAG_OVERRIDE_TRACK_ENCRYPTION_DEFAULTS),
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AP4_CencSampleEncryption(*this, algorithm_id, iv_size, kid)
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{
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}
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/*----------------------------------------------------------------------
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| AP4_SencAtom::AP4_SencAtom
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+---------------------------------------------------------------------*/
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AP4_SencAtom::AP4_SencAtom(AP4_UI08 per_sample_iv_size,
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AP4_UI08 constant_iv_size,
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const AP4_UI08* constant_iv,
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AP4_UI08 crypt_byte_block,
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AP4_UI08 skip_byte_block):
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AP4_Atom(AP4_ATOM_TYPE_SENC, AP4_FULL_ATOM_HEADER_SIZE+4, 0, 0),
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AP4_CencSampleEncryption(*this,
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per_sample_iv_size,
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constant_iv_size,
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constant_iv,
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crypt_byte_block,
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skip_byte_block)
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{
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}
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/*----------------------------------------------------------------------
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| AP4_SencAtom::WriteFields
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+---------------------------------------------------------------------*/
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AP4_Result
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AP4_SencAtom::WriteFields(AP4_ByteStream& stream)
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{
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return DoWriteFields(stream);
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}
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/*----------------------------------------------------------------------
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| AP4_SencAtom::InspectFields
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+---------------------------------------------------------------------*/
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AP4_Result
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AP4_SencAtom::InspectFields(AP4_AtomInspector& inspector)
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{
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return DoInspectFields(inspector);
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}
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