You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
56 lines
2.6 KiB
56 lines
2.6 KiB
/*
|
|
* 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_FRAME_ENCRYPTOR_INTERFACE_H_
|
|
#define API_CRYPTO_FRAME_ENCRYPTOR_INTERFACE_H_
|
|
|
|
#include "api/array_view.h"
|
|
#include "api/media_types.h"
|
|
#include "rtc_base/ref_count.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. Additional data may be null.
|
|
// Note: This interface is not ready for production use.
|
|
class FrameEncryptorInterface : public rtc::RefCountInterface {
|
|
public:
|
|
~FrameEncryptorInterface() override {}
|
|
|
|
// Attempts to encrypt the provided frame. You may assume the encrypted_frame
|
|
// will match the size returned by GetMaxCiphertextByteSize 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. You
|
|
// must set bytes_written to the number of bytes you wrote in the
|
|
// encrypted_frame. 0 must be returned if successful all other numbers can be
|
|
// selected by the implementer to represent error codes.
|
|
virtual int Encrypt(cricket::MediaType media_type,
|
|
uint32_t ssrc,
|
|
rtc::ArrayView<const uint8_t> additional_data,
|
|
rtc::ArrayView<const uint8_t> frame,
|
|
rtc::ArrayView<uint8_t> encrypted_frame,
|
|
size_t* bytes_written) = 0;
|
|
|
|
// Returns the total required length in bytes for the output of the
|
|
// encryption. This can be larger than the actual number of bytes you need but
|
|
// must never be smaller as it informs the size of the encrypted_frame buffer.
|
|
virtual size_t GetMaxCiphertextByteSize(cricket::MediaType media_type,
|
|
size_t frame_size) = 0;
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // API_CRYPTO_FRAME_ENCRYPTOR_INTERFACE_H_
|