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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/media/media_internals.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/json/json_reader.h"
#include "base/run_loop.h"
#include "base/strings/utf_string_conversions.h"
#include "content/public/test/test_browser_thread_bundle.h"
#include "media/audio/audio_parameters.h"
#include "media/base/channel_layout.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
const int kTestComponentID = 0;
const char kTestInputDeviceID[] = "test-input-id";
const char kTestOutputDeviceID[] = "test-output-id";
} // namespace
namespace content {
class MediaInternalsTest
: public testing::TestWithParam<media::AudioLogFactory::AudioComponent> {
public:
MediaInternalsTest()
: media_internals_(MediaInternals::GetInstance()),
update_cb_(base::Bind(&MediaInternalsTest::UpdateCallbackImpl,
base::Unretained(this))),
test_params_(media::AudioParameters::AUDIO_PCM_LINEAR,
media::CHANNEL_LAYOUT_MONO,
48000,
16,
128),
test_component_(GetParam()),
audio_log_(media_internals_->CreateAudioLog(test_component_)) {
media_internals_->AddUpdateCallback(update_cb_);
}
virtual ~MediaInternalsTest() {
media_internals_->RemoveUpdateCallback(update_cb_);
}
protected:
// Extracts and deserializes the JSON update data; merges into |update_data_|.
void UpdateCallbackImpl(const base::string16& update) {
// Each update string looks like "<JavaScript Function Name>({<JSON>});", to
// use the JSON reader we need to strip out the JavaScript code.
std::string utf8_update = base::UTF16ToUTF8(update);
const std::string::size_type first_brace = utf8_update.find('{');
const std::string::size_type last_brace = utf8_update.rfind('}');
scoped_ptr<base::Value> output_value(base::JSONReader::Read(
utf8_update.substr(first_brace, last_brace - first_brace + 1)));
CHECK(output_value);
base::DictionaryValue* output_dict = NULL;
CHECK(output_value->GetAsDictionary(&output_dict));
update_data_.MergeDictionary(output_dict);
}
void ExpectInt(const std::string& key, int expected_value) {
int actual_value = 0;
ASSERT_TRUE(update_data_.GetInteger(key, &actual_value));
EXPECT_EQ(expected_value, actual_value);
}
void ExpectString(const std::string& key, const std::string& expected_value) {
std::string actual_value;
ASSERT_TRUE(update_data_.GetString(key, &actual_value));
EXPECT_EQ(expected_value, actual_value);
}
void ExpectStatus(const std::string& expected_value) {
ExpectString("status", expected_value);
}
TestBrowserThreadBundle thread_bundle_;
MediaInternals* const media_internals_;
MediaInternals::UpdateCallback update_cb_;
base::DictionaryValue update_data_;
const media::AudioParameters test_params_;
const media::AudioLogFactory::AudioComponent test_component_;
scoped_ptr<media::AudioLog> audio_log_;
};
TEST_P(MediaInternalsTest, AudioLogCreateStartStopErrorClose) {
audio_log_->OnCreated(
kTestComponentID, test_params_, kTestInputDeviceID, kTestOutputDeviceID);
base::RunLoop().RunUntilIdle();
ExpectString("channel_layout",
media::ChannelLayoutToString(test_params_.channel_layout()));
ExpectInt("sample_rate", test_params_.sample_rate());
ExpectInt("frames_per_buffer", test_params_.frames_per_buffer());
ExpectInt("channels", test_params_.channels());
ExpectInt("input_channels", test_params_.input_channels());
ExpectString("output_device_id", kTestOutputDeviceID);
ExpectString("input_device_id", kTestInputDeviceID);
ExpectInt("component_id", kTestComponentID);
ExpectInt("component_type", test_component_);
ExpectStatus("created");
// Verify OnStarted().
audio_log_->OnStarted(kTestComponentID);
base::RunLoop().RunUntilIdle();
ExpectStatus("started");
// Verify OnStopped().
audio_log_->OnStopped(kTestComponentID);
base::RunLoop().RunUntilIdle();
ExpectStatus("stopped");
// Verify OnError().
const char kErrorKey[] = "error_occurred";
std::string no_value;
ASSERT_FALSE(update_data_.GetString(kErrorKey, &no_value));
audio_log_->OnError(kTestComponentID);
base::RunLoop().RunUntilIdle();
ExpectString(kErrorKey, "true");
// Verify OnClosed().
audio_log_->OnClosed(kTestComponentID);
base::RunLoop().RunUntilIdle();
ExpectStatus("closed");
}
TEST_P(MediaInternalsTest, AudioLogCreateClose) {
audio_log_->OnCreated(
kTestComponentID, test_params_, kTestInputDeviceID, kTestOutputDeviceID);
base::RunLoop().RunUntilIdle();
ExpectStatus("created");
audio_log_->OnClosed(kTestComponentID);
base::RunLoop().RunUntilIdle();
ExpectStatus("closed");
}
INSTANTIATE_TEST_CASE_P(
MediaInternalsTest, MediaInternalsTest, testing::Values(
media::AudioLogFactory::AUDIO_INPUT_CONTROLLER,
media::AudioLogFactory::AUDIO_OUTPUT_CONTROLLER,
media::AudioLogFactory::AUDIO_OUTPUT_STREAM));
} // namespace content
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