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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_send_frame_transformer_delegate.h"
#include <memory>
#include <utility>
#include "rtc_base/task_queue_for_test.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::Return;
using ::testing::SaveArg;
class MockChannelSend {
public:
MockChannelSend() = default;
~MockChannelSend() = default;
MOCK_METHOD(int32_t,
SendFrame,
(AudioFrameType frameType,
uint8_t payloadType,
uint32_t rtp_timestamp,
rtc::ArrayView<const uint8_t> payload,
int64_t absolute_capture_timestamp_ms));
ChannelSendFrameTransformerDelegate::SendFrameCallback callback() {
return [this](AudioFrameType frameType, uint8_t payloadType,
uint32_t rtp_timestamp, rtc::ArrayView<const uint8_t> payload,
int64_t absolute_capture_timestamp_ms) {
return SendFrame(frameType, payloadType, rtp_timestamp, payload,
absolute_capture_timestamp_ms);
};
}
};
std::unique_ptr<MockTransformableAudioFrame> CreateMockReceiverFrame() {
const uint8_t mock_data[] = {1, 2, 3, 4};
std::unique_ptr<MockTransformableAudioFrame> mock_frame =
std::make_unique<MockTransformableAudioFrame>();
rtc::ArrayView<const uint8_t> payload(mock_data);
ON_CALL(*mock_frame, GetData).WillByDefault(Return(payload));
ON_CALL(*mock_frame, GetPayloadType).WillByDefault(Return(0));
ON_CALL(*mock_frame, GetDirection)
.WillByDefault(Return(TransformableFrameInterface::Direction::kReceiver));
return mock_frame;
}
// Test that the delegate registers itself with the frame transformer on Init().
TEST(ChannelSendFrameTransformerDelegateTest,
RegisterTransformedFrameCallbackOnInit) {
rtc::scoped_refptr<MockFrameTransformer> mock_frame_transformer =
rtc::make_ref_counted<MockFrameTransformer>();
rtc::scoped_refptr<ChannelSendFrameTransformerDelegate> delegate =
rtc::make_ref_counted<ChannelSendFrameTransformerDelegate>(
ChannelSendFrameTransformerDelegate::SendFrameCallback(),
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(ChannelSendFrameTransformerDelegateTest,
UnregisterTransformedFrameCallbackOnReset) {
rtc::scoped_refptr<MockFrameTransformer> mock_frame_transformer =
rtc::make_ref_counted<MockFrameTransformer>();
rtc::scoped_refptr<ChannelSendFrameTransformerDelegate> delegate =
rtc::make_ref_counted<ChannelSendFrameTransformerDelegate>(
ChannelSendFrameTransformerDelegate::SendFrameCallback(),
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 SendFrameCallback.
TEST(ChannelSendFrameTransformerDelegateTest,
TransformRunsChannelSendCallback) {
TaskQueueForTest channel_queue("channel_queue");
rtc::scoped_refptr<MockFrameTransformer> mock_frame_transformer =
rtc::make_ref_counted<NiceMock<MockFrameTransformer>>();
MockChannelSend mock_channel;
rtc::scoped_refptr<ChannelSendFrameTransformerDelegate> delegate =
rtc::make_ref_counted<ChannelSendFrameTransformerDelegate>(
mock_channel.callback(), mock_frame_transformer, &channel_queue);
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};
EXPECT_CALL(mock_channel, SendFrame);
ON_CALL(*mock_frame_transformer, Transform)
.WillByDefault(
[&callback](std::unique_ptr<TransformableFrameInterface> frame) {
callback->OnTransformedFrame(std::move(frame));
});
delegate->Transform(AudioFrameType::kEmptyFrame, 0, 0, data, sizeof(data), 0,
0);
channel_queue.WaitForPreviouslyPostedTasks();
}
// Test that when the delegate receives a Incoming frame from the frame
// transformer, it passes it to the channel using the SendFrameCallback.
TEST(ChannelSendFrameTransformerDelegateTest,
TransformRunsChannelSendCallbackForIncomingFrame) {
TaskQueueForTest channel_queue("channel_queue");
rtc::scoped_refptr<MockFrameTransformer> mock_frame_transformer =
rtc::make_ref_counted<NiceMock<MockFrameTransformer>>();
MockChannelSend mock_channel;
rtc::scoped_refptr<ChannelSendFrameTransformerDelegate> delegate =
rtc::make_ref_counted<ChannelSendFrameTransformerDelegate>(
mock_channel.callback(), mock_frame_transformer, &channel_queue);
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};
EXPECT_CALL(mock_channel, SendFrame).Times(0);
EXPECT_CALL(mock_channel, SendFrame(_, 0, 0, ElementsAre(1, 2, 3, 4), _));
ON_CALL(*mock_frame_transformer, Transform)
.WillByDefault(
[&callback](std::unique_ptr<TransformableFrameInterface> frame) {
callback->OnTransformedFrame(CreateMockReceiverFrame());
});
delegate->Transform(AudioFrameType::kEmptyFrame, 0, 0, data, sizeof(data), 0,
0);
channel_queue.WaitForPreviouslyPostedTasks();
}
// Test that if the delegate receives a transformed frame after it has been
// reset, it does not run the SendFrameCallback, as the channel is destroyed
// after resetting the delegate.
TEST(ChannelSendFrameTransformerDelegateTest,
OnTransformedDoesNotRunChannelSendCallbackAfterReset) {
TaskQueueForTest channel_queue("channel_queue");
rtc::scoped_refptr<MockFrameTransformer> mock_frame_transformer =
rtc::make_ref_counted<testing::NiceMock<MockFrameTransformer>>();
MockChannelSend mock_channel;
rtc::scoped_refptr<ChannelSendFrameTransformerDelegate> delegate =
rtc::make_ref_counted<ChannelSendFrameTransformerDelegate>(
mock_channel.callback(), mock_frame_transformer, &channel_queue);
delegate->Reset();
EXPECT_CALL(mock_channel, SendFrame).Times(0);
delegate->OnTransformedFrame(std::make_unique<MockTransformableAudioFrame>());
channel_queue.WaitForPreviouslyPostedTasks();
}
} // namespace
} // namespace webrtc
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