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/*
* 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.
*/
#include "api/test/fake_frame_encryptor.h"
#include <cstddef>
#include <cstdint>
#include "api/array_view.h"
#include "api/media_types.h"
#include "rtc_base/checks.h"
namespace webrtc {
FakeFrameEncryptor::FakeFrameEncryptor(uint8_t fake_key, uint8_t postfix_byte)
: fake_key_(fake_key), postfix_byte_(postfix_byte) {}
// FrameEncryptorInterface implementation
int FakeFrameEncryptor::Encrypt(MediaType /* media_type */,
uint32_t /* ssrc */,
ArrayView<const uint8_t> /* additional_data */,
ArrayView<const uint8_t> frame,
ArrayView<uint8_t> encrypted_frame,
size_t* bytes_written) {
if (fail_encryption_) {
return static_cast<int>(FakeEncryptionStatus::FORCED_FAILURE);
}
RTC_CHECK_EQ(frame.size() + 1, encrypted_frame.size());
for (size_t i = 0; i < frame.size(); i++) {
encrypted_frame[i] = frame[i] ^ fake_key_;
}
encrypted_frame[frame.size()] = postfix_byte_;
*bytes_written = encrypted_frame.size();
return static_cast<int>(FakeEncryptionStatus::OK);
}
size_t FakeFrameEncryptor::GetMaxCiphertextByteSize(MediaType /* media_type */,
size_t frame_size) {
return frame_size + 1;
}
void FakeFrameEncryptor::SetFakeKey(uint8_t fake_key) {
fake_key_ = fake_key;
}
uint8_t FakeFrameEncryptor::GetFakeKey() const {
return fake_key_;
}
void FakeFrameEncryptor::SetPostfixByte(uint8_t postfix_byte) {
postfix_byte_ = postfix_byte;
}
uint8_t FakeFrameEncryptor::GetPostfixByte() const {
return postfix_byte_;
}
void FakeFrameEncryptor::SetFailEncryption(bool fail_encryption) {
fail_encryption_ = fail_encryption;
}
} // namespace webrtc
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