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/*
* Copyright (c) 2020 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 "audio/channel_receive_frame_transformer_delegate.h"
#include <memory>
#include <utility>
#include "audio/channel_send_frame_transformer_delegate.h"
#include "test/gmock.h"
#include "test/gtest.h"
#include "test/mock_frame_transformer.h"
#include "test/mock_transformable_frame.h"
namespace webrtc {
namespace {
using ::testing::_;
using ::testing::ElementsAre;
using ::testing::NiceMock;
using ::testing::SaveArg;
class MockChannelReceive {
public:
MOCK_METHOD(void,
ReceiveFrame,
(rtc::ArrayView<const uint8_t> packet, const RTPHeader& header));
ChannelReceiveFrameTransformerDelegate::ReceiveFrameCallback callback() {
return [this](rtc::ArrayView<const uint8_t> packet,
const RTPHeader& header) { ReceiveFrame(packet, header); };
}
};
// Test that the delegate registers itself with the frame transformer on Init().
TEST(ChannelReceiveFrameTransformerDelegateTest,
RegisterTransformedFrameCallbackOnInit) {
rtc::scoped_refptr<MockFrameTransformer> mock_frame_transformer =
rtc::make_ref_counted<MockFrameTransformer>();
rtc::scoped_refptr<ChannelReceiveFrameTransformerDelegate> delegate =
rtc::make_ref_counted<ChannelReceiveFrameTransformerDelegate>(
ChannelReceiveFrameTransformerDelegate::ReceiveFrameCallback(),
mock_frame_transformer, nullptr);
EXPECT_CALL(*mock_frame_transformer, RegisterTransformedFrameCallback);
delegate->Init();
}
// Test that the delegate unregisters itself from the frame transformer on
// Reset().
TEST(ChannelReceiveFrameTransformerDelegateTest,
UnregisterTransformedFrameCallbackOnReset) {
rtc::scoped_refptr<MockFrameTransformer> mock_frame_transformer =
rtc::make_ref_counted<MockFrameTransformer>();
rtc::scoped_refptr<ChannelReceiveFrameTransformerDelegate> delegate =
rtc::make_ref_counted<ChannelReceiveFrameTransformerDelegate>(
ChannelReceiveFrameTransformerDelegate::ReceiveFrameCallback(),
mock_frame_transformer, nullptr);
EXPECT_CALL(*mock_frame_transformer, UnregisterTransformedFrameCallback);
delegate->Reset();
}
// Test that when the delegate receives a transformed frame from the frame
// transformer, it passes it to the channel using the ReceiveFrameCallback.
TEST(ChannelReceiveFrameTransformerDelegateTest,
TransformRunsChannelReceiveCallback) {
rtc::AutoThread main_thread;
rtc::scoped_refptr<MockFrameTransformer> mock_frame_transformer =
rtc::make_ref_counted<NiceMock<MockFrameTransformer>>();
MockChannelReceive mock_channel;
rtc::scoped_refptr<ChannelReceiveFrameTransformerDelegate> delegate =
rtc::make_ref_counted<ChannelReceiveFrameTransformerDelegate>(
mock_channel.callback(), mock_frame_transformer,
rtc::Thread::Current());
rtc::scoped_refptr<TransformedFrameCallback> callback;
EXPECT_CALL(*mock_frame_transformer, RegisterTransformedFrameCallback)
.WillOnce(SaveArg<0>(&callback));
delegate->Init();
ASSERT_TRUE(callback);
const uint8_t data[] = {1, 2, 3, 4};
rtc::ArrayView<const uint8_t> packet(data, sizeof(data));
RTPHeader header;
EXPECT_CALL(mock_channel, ReceiveFrame);
ON_CALL(*mock_frame_transformer, Transform)
.WillByDefault(
[&callback](std::unique_ptr<TransformableFrameInterface> frame) {
callback->OnTransformedFrame(std::move(frame));
});
delegate->Transform(packet, header, /*ssrc=*/1111, /*mimeType=*/"audio/opus");
rtc::ThreadManager::ProcessAllMessageQueuesForTesting();
}
// Test that when the delegate receives a Outgoing frame from the frame
// transformer, it passes it to the channel using the ReceiveFrameCallback.
TEST(ChannelReceiveFrameTransformerDelegateTest,
TransformRunsChannelReceiveCallbackForSenderFrame) {
rtc::AutoThread main_thread;
rtc::scoped_refptr<MockFrameTransformer> mock_frame_transformer =
rtc::make_ref_counted<NiceMock<MockFrameTransformer>>();
MockChannelReceive mock_channel;
rtc::scoped_refptr<ChannelReceiveFrameTransformerDelegate> delegate =
rtc::make_ref_counted<ChannelReceiveFrameTransformerDelegate>(
mock_channel.callback(), mock_frame_transformer,
rtc::Thread::Current());
rtc::scoped_refptr<TransformedFrameCallback> callback;
EXPECT_CALL(*mock_frame_transformer, RegisterTransformedFrameCallback)
.WillOnce(SaveArg<0>(&callback));
delegate->Init();
ASSERT_TRUE(callback);
const uint8_t data[] = {1, 2, 3, 4};
rtc::ArrayView<const uint8_t> packet(data, sizeof(data));
RTPHeader header;
EXPECT_CALL(mock_channel, ReceiveFrame(ElementsAre(1, 2, 3, 4), _));
ON_CALL(*mock_frame_transformer, Transform)
.WillByDefault([&callback](
std::unique_ptr<TransformableFrameInterface> frame) {
auto* transformed_frame =
static_cast<TransformableAudioFrameInterface*>(frame.get());
callback->OnTransformedFrame(CloneSenderAudioFrame(transformed_frame));
});
delegate->Transform(packet, header, /*ssrc=*/1111, /*mimeType=*/"audio/opus");
rtc::ThreadManager::ProcessAllMessageQueuesForTesting();
}
// Test that if the delegate receives a transformed frame after it has been
// reset, it does not run the ReceiveFrameCallback, as the channel is destroyed
// after resetting the delegate.
TEST(ChannelReceiveFrameTransformerDelegateTest,
OnTransformedDoesNotRunChannelReceiveCallbackAfterReset) {
rtc::AutoThread main_thread;
rtc::scoped_refptr<MockFrameTransformer> mock_frame_transformer =
rtc::make_ref_counted<testing::NiceMock<MockFrameTransformer>>();
MockChannelReceive mock_channel;
rtc::scoped_refptr<ChannelReceiveFrameTransformerDelegate> delegate =
rtc::make_ref_counted<ChannelReceiveFrameTransformerDelegate>(
mock_channel.callback(), mock_frame_transformer,
rtc::Thread::Current());
delegate->Reset();
EXPECT_CALL(mock_channel, ReceiveFrame).Times(0);
delegate->OnTransformedFrame(std::make_unique<MockTransformableAudioFrame>());
rtc::ThreadManager::ProcessAllMessageQueuesForTesting();
}
TEST(ChannelReceiveFrameTransformerDelegateTest,
ShortCircuitingSkipsTransform) {
rtc::AutoThread main_thread;
rtc::scoped_refptr<MockFrameTransformer> mock_frame_transformer =
rtc::make_ref_counted<testing::NiceMock<MockFrameTransformer>>();
MockChannelReceive mock_channel;
rtc::scoped_refptr<ChannelReceiveFrameTransformerDelegate> delegate =
rtc::make_ref_counted<ChannelReceiveFrameTransformerDelegate>(
mock_channel.callback(), mock_frame_transformer,
rtc::Thread::Current());
const uint8_t data[] = {1, 2, 3, 4};
rtc::ArrayView<const uint8_t> packet(data, sizeof(data));
RTPHeader header;
delegate->StartShortCircuiting();
rtc::ThreadManager::ProcessAllMessageQueuesForTesting();
// Will not call the actual transformer.
EXPECT_CALL(*mock_frame_transformer, Transform).Times(0);
// Will pass the frame straight to the channel.
EXPECT_CALL(mock_channel, ReceiveFrame);
delegate->Transform(packet, header, /*ssrc=*/1111, /*mimeType=*/"audio/opus");
}
} // namespace
} // namespace webrtc
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