/* -*- 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/. */
#ifndef WidevineUtils_h_
#define WidevineUtils_h_
#include "stddef.h"
#include "content_decryption_module.h"
#include "nsISupportsImpl.h"
#include "nsTArray.h"
#include "mozilla/Logging.h"
namespace mozilla {
#define ENSURE_TRUE(condition, rv) \
{ \
if (!(condition)) { \
GMP_LOG_DEBUG(
"ENSURE_TRUE FAILED %s:%d", __FILE__, __LINE__); \
return rv; \
} \
}
#define ENSURE_GMP_SUCCESS(err, rv) \
{ \
if (GMP_FAILED(err)) { \
GMP_LOG_DEBUG(
"ENSURE_GMP_SUCCESS FAILED %s:%d", __FILE__, __LINE__); \
return rv; \
} \
}
namespace gmp {
class CDMShmemBuffer;
}
class WidevineBuffer;
// Base class for our cdm::Buffer implementations, so we can tell at runtime
// whether the buffer is a Shmem or non-Shmem buffer.
class CDMBuffer :
public cdm::Buffer {
public:
virtual WidevineBuffer* AsArrayBuffer() {
return nullptr; }
virtual gmp::CDMShmemBuffer* AsShmemBuffer() {
return nullptr; }
};
class WidevineBuffer :
public CDMBuffer {
public:
explicit WidevineBuffer(size_t aSize);
~WidevineBuffer() override;
void Destroy() override;
uint32_t Capacity()
const override;
uint8_t* Data() override;
void SetSize(uint32_t aSize) override;
uint32_t Size()
const override;
// Moves contents of buffer out into temporary.
// Note: This empties the buffer.
nsTArray<uint8_t> ExtractBuffer();
WidevineBuffer* AsArrayBuffer() override {
return this; }
private:
nsTArray<uint8_t> mBuffer;
WidevineBuffer(
const WidevineBuffer&);
void operator=(
const WidevineBuffer&);
};
class WidevineDecryptedBlock :
public cdm::DecryptedBlock {
public:
WidevineDecryptedBlock();
~WidevineDecryptedBlock() override;
void SetDecryptedBuffer(cdm::Buffer* aBuffer) override;
cdm::Buffer* DecryptedBuffer() override;
void SetTimestamp(int64_t aTimestamp) override;
int64_t Timestamp()
const override;
private:
cdm::Buffer* mBuffer;
int64_t mTimestamp;
};
}
// namespace mozilla
#endif // WidevineUtils_h_
