51 lines
2.1 KiB
C
51 lines
2.1 KiB
C
|
/*
|
||
|
|
* Copyright 2018 The WebRTC project authors. All Rights Reserved.
|
||
|
|
*
|
||
|
|
* Use of this source code is governed by a BSD-style license
|
||
|
|
* that can be found in the LICENSE file in the root of the source
|
||
|
|
* tree. An additional intellectual property rights grant can be found
|
||
|
|
* in the file PATENTS. All contributing project authors may
|
||
|
|
* be found in the AUTHORS file in the root of the source tree.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef API_CRYPTO_FRAMEENCRYPTORINTERFACE_H_
|
||
|
|
#define API_CRYPTO_FRAMEENCRYPTORINTERFACE_H_
|
||
|
|
|
||
|
|
#include "api/array_view.h"
|
||
|
|
#include "api/mediatypes.h"
|
||
|
|
#include "rtc_base/refcount.h"
|
||
|
|
|
||
|
|
namespace webrtc {
|
||
|
|
|
||
|
|
// FrameEncryptorInterface allows users to provide a custom encryption
|
||
|
|
// implementation to encrypt all outgoing audio and video frames. The user must
|
||
|
|
// also provide a FrameDecryptorInterface to be able to decrypt the frames on
|
||
|
|
// the receiving device. Note this is an additional layer of encryption in
|
||
|
|
// addition to the standard SRTP mechanism and is not intended to be used
|
||
|
|
// without it. Implementations of this interface will have the same lifetime as
|
||
|
|
// the RTPSenders it is attached to.
|
||
|
|
// This interface is not ready for production use.
|
||
|
|
class FrameEncryptorInterface : public rtc::RefCountInterface {
|
||
|
|
public:
|
||
|
|
virtual ~FrameEncryptorInterface() {}
|
||
|
|
|
||
|
|
// Attempts to encrypt the provided frame. You may assume the encrypted_frame
|
||
|
|
// will match the size returned by GetOutputSize for a give frame. You may
|
||
|
|
// assume that the frames will arrive in order if SRTP is enabled. The ssrc
|
||
|
|
// will simply identify which stream the frame is travelling on.
|
||
|
|
// TODO(benwright) integrate error codes.
|
||
|
|
virtual bool Encrypt(cricket::MediaType media_type,
|
||
|
|
uint32_t ssrc,
|
||
|
|
rtc::ArrayView<const uint8_t> frame,
|
||
|
|
rtc::ArrayView<uint8_t> encrypted_frame) = 0;
|
||
|
|
|
||
|
|
// Returns the total required length in bytes for the output of the
|
||
|
|
// encryption.
|
||
|
|
virtual size_t GetOutputSize(cricket::MediaType media_type,
|
||
|
|
size_t frame_size) = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace webrtc
|
||
|
|
|
||
|
|
#endif // API_CRYPTO_FRAMEENCRYPTORINTERFACE_H_
|