72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
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/*
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* Copyright 2018 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "api/test/fake_frame_decryptor.h"
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#include <vector>
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#include "rtc_base/checks.h"
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namespace webrtc {
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FakeFrameDecryptor::FakeFrameDecryptor(uint8_t fake_key,
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uint8_t expected_postfix_byte)
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: fake_key_(fake_key), expected_postfix_byte_(expected_postfix_byte) {}
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FakeFrameDecryptor::Result FakeFrameDecryptor::Decrypt(
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cricket::MediaType media_type,
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const std::vector<uint32_t>& csrcs,
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rtc::ArrayView<const uint8_t> additional_data,
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rtc::ArrayView<const uint8_t> encrypted_frame,
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rtc::ArrayView<uint8_t> frame) {
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if (fail_decryption_) {
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return Result(Status::kFailedToDecrypt, 0);
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}
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RTC_CHECK_EQ(frame.size() + 1, encrypted_frame.size());
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for (size_t i = 0; i < frame.size(); i++) {
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frame[i] = encrypted_frame[i] ^ fake_key_;
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}
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if (encrypted_frame[frame.size()] != expected_postfix_byte_) {
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return Result(Status::kFailedToDecrypt, 0);
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}
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return Result(Status::kOk, frame.size());
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}
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size_t FakeFrameDecryptor::GetMaxPlaintextByteSize(
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cricket::MediaType media_type,
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size_t encrypted_frame_size) {
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return encrypted_frame_size - 1;
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}
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void FakeFrameDecryptor::SetFakeKey(uint8_t fake_key) {
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fake_key_ = fake_key;
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}
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uint8_t FakeFrameDecryptor::GetFakeKey() const {
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return fake_key_;
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}
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void FakeFrameDecryptor::SetExpectedPostfixByte(uint8_t expected_postfix_byte) {
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expected_postfix_byte_ = expected_postfix_byte;
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}
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uint8_t FakeFrameDecryptor::GetExpectedPostfixByte() const {
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return expected_postfix_byte_;
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}
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void FakeFrameDecryptor::SetFailDecryption(bool fail_decryption) {
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fail_decryption_ = fail_decryption;
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}
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} // namespace webrtc
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