gecko/content/media/gmp/GMPEncryptedBufferDataImpl.cpp

89 lines
2.0 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "GMPEncryptedBufferDataImpl.h"
#include "mozilla/gmp/GMPTypes.h"
namespace mozilla {
namespace gmp {
GMPEncryptedBufferDataImpl::GMPEncryptedBufferDataImpl(const CryptoSample& aCrypto)
: mKeyId(aCrypto.key)
, mIV(aCrypto.iv)
, mClearBytes(aCrypto.plain_sizes)
, mCipherBytes(aCrypto.encrypted_sizes)
{
}
GMPEncryptedBufferDataImpl::GMPEncryptedBufferDataImpl(const GMPDecryptionData& aData)
{
mKeyId = aData.mKeyId();
mIV = aData.mIV();
mClearBytes = aData.mClearBytes();
mCipherBytes = aData.mCipherBytes();
MOZ_ASSERT(mClearBytes.Length() == mCipherBytes.Length());
}
GMPEncryptedBufferDataImpl::~GMPEncryptedBufferDataImpl()
{
}
void
GMPEncryptedBufferDataImpl::RelinquishData(GMPDecryptionData& aData)
{
aData.mKeyId() = Move(mKeyId);
aData.mIV() = Move(mIV);
aData.mClearBytes() = Move(mClearBytes);
aData.mCipherBytes() = Move(mCipherBytes);
}
const uint8_t*
GMPEncryptedBufferDataImpl::KeyId() const
{
return mKeyId.Elements();
}
uint32_t
GMPEncryptedBufferDataImpl::KeyIdSize() const
{
return mKeyId.Length();
}
const uint8_t*
GMPEncryptedBufferDataImpl::IV() const
{
return mIV.Elements();
}
uint32_t
GMPEncryptedBufferDataImpl::IVSize() const
{
return mIV.Length();
}
const uint16_t*
GMPEncryptedBufferDataImpl::ClearBytes() const
{
return mClearBytes.Elements();
}
const uint32_t*
GMPEncryptedBufferDataImpl::CipherBytes() const
{
return mCipherBytes.Elements();
}
uint32_t
GMPEncryptedBufferDataImpl::NumSubsamples() const
{
MOZ_ASSERT(mClearBytes.Length() == mCipherBytes.Length());
// Return the min of the two, to ensure there's not chance of array index
// out-of-bounds shenanigans.
return std::min<uint32_t>(mClearBytes.Length(), mCipherBytes.Length());
}
} // namespace gmp
} // namespace mozilla