Add audio routing tests (8729d684) · Commits · e / os / android_frameworks_av

media/libaudioclient/tests/Android.bp

+12 −0

Original line number	Diff line number	Diff line
		@@ -170,6 +170,18 @@ cc_test {
		],
		}

		cc_test {
		name: "audiorouting_tests",
		defaults: ["libaudioclient_gtests_defaults"],
		srcs: [
		"audiorouting_tests.cpp",
		"audio_test_utils.cpp",
		],
		shared_libs: [
		"libxml2",
		],
		}

		cc_test {
		name: "audioclient_serialization_tests",
		defaults: ["libaudioclient_gtests_defaults"],

media/libaudioclient/tests/audio_test_utils.cpp

+243 −0

Original line number	Diff line number	Diff line
		@@ -548,3 +548,246 @@ status_t AudioCapture::audioProcess() {
		}
		}
		}

		status_t listAudioPorts(std::vector<audio_port_v7>& portsVec) {
		int attempts = 5;
		status_t status;
		unsigned int generation1, generation;
		unsigned int numPorts = 0;
		do {
		if (attempts-- < 0) {
		status = TIMED_OUT;
		break;
		}
		status = AudioSystem::listAudioPorts(AUDIO_PORT_ROLE_NONE, AUDIO_PORT_TYPE_NONE, &numPorts,
		nullptr, &generation1);
		if (status != NO_ERROR) {
		ALOGE("AudioSystem::listAudioPorts returned error %d", status);
		break;
		}
		portsVec.resize(numPorts);
		status = AudioSystem::listAudioPorts(AUDIO_PORT_ROLE_NONE, AUDIO_PORT_TYPE_NONE, &numPorts,
		portsVec.data(), &generation);
		} while (generation1 != generation && status == NO_ERROR);
		if (status != NO_ERROR) {
		numPorts = 0;
		portsVec.clear();
		}
		return status;
		}

		status_t getPortById(const audio_port_handle_t portId, audio_port_v7& port) {
		std::vector<struct audio_port_v7> ports;
		status_t status = listAudioPorts(ports);
		if (status != OK) return status;
		for (auto i = 0; i < ports.size(); i++) {
		if (ports[i].id == portId) {
		port = ports[i];
		return OK;
		}
		}
		return BAD_VALUE;
		}

		status_t getPortByAttributes(audio_port_role_t role, audio_port_type_t type,
		audio_devices_t deviceType, audio_port_v7& port) {
		std::vector<struct audio_port_v7> ports;
		status_t status = listAudioPorts(ports);
		if (status != OK) return status;
		for (auto i = 0; i < ports.size(); i++) {
		if (ports[i].role == role && ports[i].type == type &&
		ports[i].ext.device.type == deviceType) {
		port = ports[i];
		return OK;
		}
		}
		return BAD_VALUE;
		}

		status_t listAudioPatches(std::vector<struct audio_patch>& patchesVec) {
		int attempts = 5;
		status_t status;
		unsigned int generation1, generation;
		unsigned int numPatches = 0;
		do {
		if (attempts-- < 0) {
		status = TIMED_OUT;
		break;
		}
		status = AudioSystem::listAudioPatches(&numPatches, nullptr, &generation1);
		if (status != NO_ERROR) {
		ALOGE("AudioSystem::listAudioPatches returned error %d", status);
		break;
		}
		patchesVec.resize(numPatches);
		status = AudioSystem::listAudioPatches(&numPatches, patchesVec.data(), &generation);
		} while (generation1 != generation && status == NO_ERROR);
		if (status != NO_ERROR) {
		numPatches = 0;
		patchesVec.clear();
		}
		return status;
		}

		status_t getPatchForOutputMix(audio_io_handle_t audioIo, audio_patch& patch) {
		std::vector<struct audio_patch> patches;
		status_t status = listAudioPatches(patches);
		if (status != OK) return status;

		for (auto i = 0; i < patches.size(); i++) {
		for (auto j = 0; j < patches[i].num_sources; j++) {
		if (patches[i].sources[j].type == AUDIO_PORT_TYPE_MIX &&
		patches[i].sources[j].ext.mix.handle == audioIo) {
		patch = patches[i];
		return OK;
		}
		}
		}
		return BAD_VALUE;
		}

		status_t getPatchForInputMix(audio_io_handle_t audioIo, audio_patch& patch) {
		std::vector<struct audio_patch> patches;
		status_t status = listAudioPatches(patches);
		if (status != OK) return status;

		for (auto i = 0; i < patches.size(); i++) {
		for (auto j = 0; j < patches[i].num_sinks; j++) {
		if (patches[i].sinks[j].type == AUDIO_PORT_TYPE_MIX &&
		patches[i].sinks[j].ext.mix.handle == audioIo) {
		patch = patches[i];
		return OK;
		}
		}
		}
		return BAD_VALUE;
		}

		bool patchContainsOutputDevice(audio_port_handle_t deviceId, audio_patch patch) {
		for (auto j = 0; j < patch.num_sinks; j++) {
		if (patch.sinks[j].type == AUDIO_PORT_TYPE_DEVICE && patch.sinks[j].id == deviceId) {
		return true;
		}
		}
		return false;
		}

		bool patchContainsInputDevice(audio_port_handle_t deviceId, audio_patch patch) {
		for (auto j = 0; j < patch.num_sources; j++) {
		if (patch.sources[j].type == AUDIO_PORT_TYPE_DEVICE && patch.sources[j].id == deviceId) {
		return true;
		}
		}
		return false;
		}

		bool checkPatchPlayback(audio_io_handle_t audioIo, audio_port_handle_t deviceId) {
		struct audio_patch patch;
		if (getPatchForOutputMix(audioIo, patch) == OK) {
		return patchContainsOutputDevice(deviceId, patch);
		}
		return false;
		}

		bool checkPatchCapture(audio_io_handle_t audioIo, audio_port_handle_t deviceId) {
		struct audio_patch patch;
		if (getPatchForInputMix(audioIo, patch) == OK) {
		return patchContainsInputDevice(deviceId, patch);
		}
		return false;
		}

		std::string dumpPortConfig(const audio_port_config& port) {
		std::ostringstream result;
		std::string deviceInfo;
		if (port.type == AUDIO_PORT_TYPE_DEVICE) {
		if (port.ext.device.type & AUDIO_DEVICE_BIT_IN) {
		InputDeviceConverter::maskToString(port.ext.device.type, deviceInfo);
		} else {
		OutputDeviceConverter::maskToString(port.ext.device.type, deviceInfo);
		}
		deviceInfo += std::string(", address = ") + port.ext.device.address;
		}
		result << "audio_port_handle_t = " << port.id << ", "
		<< "Role = " << (port.role == AUDIO_PORT_ROLE_SOURCE ? "source" : "sink") << ", "
		<< "Type = " << (port.type == AUDIO_PORT_TYPE_DEVICE ? "device" : "mix") << ", "
		<< "deviceInfo = " << (port.type == AUDIO_PORT_TYPE_DEVICE ? deviceInfo : "") << ", "
		<< "config_mask = 0x" << std::hex << port.config_mask << std::dec << ", ";
		if (port.config_mask & AUDIO_PORT_CONFIG_SAMPLE_RATE) {
		result << "sample rate = " << port.sample_rate << ", ";
		}
		if (port.config_mask & AUDIO_PORT_CONFIG_CHANNEL_MASK) {
		result << "channel mask = " << port.channel_mask << ", ";
		}
		if (port.config_mask & AUDIO_PORT_CONFIG_FORMAT) {
		result << "format = " << port.format << ", ";
		}
		result << "input flags = " << port.flags.input << ", ";
		result << "output flags = " << port.flags.output << ", ";
		result << "mix io handle = " << (port.type == AUDIO_PORT_TYPE_DEVICE ? 0 : port.ext.mix.handle)
		<< "\n";
		return result.str();
		}

		std::string dumpPatch(const audio_patch& patch) {
		std::ostringstream result;
		result << "----------------- Dumping Patch ------------ \n";
		result << "Patch Handle: " << patch.id << ", sources: " << patch.num_sources
		<< ", sink: " << patch.num_sinks << "\n";
		audio_port_v7 port;
		for (uint32_t i = 0; i < patch.num_sources; i++) {
		result << "----------------- Dumping Source Port Config @ index " << i
		<< " ------------ \n";
		result << dumpPortConfig(patch.sources[i]);
		result << "----------------- Dumping Source Port for id " << patch.sources[i].id
		<< " ------------ \n";
		getPortById(patch.sources[i].id, port);
		result << dumpPort(port);
		}
		for (uint32_t i = 0; i < patch.num_sinks; i++) {
		result << "----------------- Dumping Sink Port Config @ index " << i << " ------------ \n";
		result << dumpPortConfig(patch.sinks[i]);
		result << "----------------- Dumping Sink Port for id " << patch.sinks[i].id
		<< " ------------ \n";
		getPortById(patch.sinks[i].id, port);
		result << dumpPort(port);
		}
		return result.str();
		}

		std::string dumpPort(const audio_port_v7& port) {
		std::ostringstream result;
		std::string deviceInfo;
		if (port.type == AUDIO_PORT_TYPE_DEVICE) {
		if (port.ext.device.type & AUDIO_DEVICE_BIT_IN) {
		InputDeviceConverter::maskToString(port.ext.device.type, deviceInfo);
		} else {
		OutputDeviceConverter::maskToString(port.ext.device.type, deviceInfo);
		}
		deviceInfo += std::string(", address = ") + port.ext.device.address;
		}
		result << "audio_port_handle_t = " << port.id << ", "
		<< "Role = " << (port.role == AUDIO_PORT_ROLE_SOURCE ? "source" : "sink") << ", "
		<< "Type = " << (port.type == AUDIO_PORT_TYPE_DEVICE ? "device" : "mix") << ", "
		<< "deviceInfo = " << (port.type == AUDIO_PORT_TYPE_DEVICE ? deviceInfo : "") << ", "
		<< "Name = " << port.name << ", "
		<< "num profiles = " << port.num_audio_profiles << ", "
		<< "mix io handle = " << (port.type == AUDIO_PORT_TYPE_DEVICE ? 0 : port.ext.mix.handle)
		<< ", ";
		for (int i = 0; i < port.num_audio_profiles; i++) {
		result << "AudioProfile = " << i << " {";
		result << "format = " << port.audio_profiles[i].format << ", ";
		result << "samplerates = ";
		for (int j = 0; j < port.audio_profiles[i].num_sample_rates; j++) {
		result << port.audio_profiles[i].sample_rates[j] << ", ";
		}
		result << "channelmasks = ";
		for (int j = 0; j < port.audio_profiles[i].num_channel_masks; j++) {
		result << "0x" << std::hex << port.audio_profiles[i].channel_masks[j] << std::dec
		<< ", ";
		}
		result << "} ";
		}
		result << dumpPortConfig(port.active_config);
		return result.str();
		}

media/libaudioclient/tests/audio_test_utils.h

+13 −0

Original line number	Diff line number	Diff line
		@@ -37,6 +37,19 @@
		using namespace android;

		void CreateRandomFile(int& fd);
		status_t listAudioPorts(std::vector<audio_port_v7>& portsVec);
		status_t listAudioPatches(std::vector<struct audio_patch>& patchesVec);
		status_t getPortByAttributes(audio_port_role_t role, audio_port_type_t type,
		audio_devices_t deviceType, audio_port_v7& port);
		status_t getPatchForOutputMix(audio_io_handle_t audioIo, audio_patch& patch);
		status_t getPatchForInputMix(audio_io_handle_t audioIo, audio_patch& patch);
		bool patchContainsOutputDevice(audio_port_handle_t deviceId, audio_patch patch);
		bool patchContainsInputDevice(audio_port_handle_t deviceId, audio_patch patch);
		bool checkPatchPlayback(audio_io_handle_t audioIo, audio_port_handle_t deviceId);
		bool checkPatchCapture(audio_io_handle_t audioIo, audio_port_handle_t deviceId);
		std::string dumpPort(const audio_port_v7& port);
		std::string dumpPortConfig(const audio_port_config& port);
		std::string dumpPatch(const audio_patch& patch);

		class OnAudioDeviceUpdateNotifier : public AudioSystem::AudioDeviceCallback {
		public:

media/libaudioclient/tests/audiorouting_tests.cpp

0 → 100644

+252 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2021 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		//#define LOG_NDEBUG 0

		#include <cutils/properties.h>
		#include <gtest/gtest.h>
		#include <libxml/parser.h>
		#include <libxml/xinclude.h>
		#include <string.h>
		#include <system/audio_config.h>

		#include "audio_test_utils.h"

		using namespace android;

		template <class T>
		constexpr void (xmlDeleter)(T t);
		template <>
		constexpr auto xmlDeleter<xmlDoc> = xmlFreeDoc;
		template <>
		constexpr auto xmlDeleter<xmlChar> = [](xmlChar* s) { xmlFree(s); };

		/** @return a unique_ptr with the correct deleter for the libxml2 object. */
		template <class T>
		constexpr auto make_xmlUnique(T* t) {
		// Wrap deleter in lambda to enable empty base optimization
		auto deleter = [](T* t) { xmlDeleter<T>(t); };
		return std::unique_ptr<T, decltype(deleter)>{t, deleter};
		}

		std::string getXmlAttribute(const xmlNode* cur, const char* attribute) {
		auto charPtr = make_xmlUnique(xmlGetProp(cur, reinterpret_cast<const xmlChar*>(attribute)));
		if (charPtr == NULL) {
		return "";
		}
		std::string value(reinterpret_cast<const char*>(charPtr.get()));
		return value;
		}

		struct MixPort {
		std::string name;
		std::string role;
		std::string flags;
		};

		struct Route {
		std::string name;
		std::string sources;
		std::string sink;
		};

		status_t parse_audio_policy_configuration_xml(std::vector<std::string>& attachedDevices,
		std::vector<MixPort>& mixPorts,
		std::vector<Route>& routes) {
		std::string path = audio_find_readable_configuration_file("audio_policy_configuration.xml");
		if (path.length() == 0) return UNKNOWN_ERROR;
		auto doc = make_xmlUnique(xmlParseFile(path.c_str()));
		if (doc == nullptr) return UNKNOWN_ERROR;
		xmlNode* root = xmlDocGetRootElement(doc.get());
		if (root == nullptr) return UNKNOWN_ERROR;
		if (xmlXIncludeProcess(doc.get()) < 0) return UNKNOWN_ERROR;
		mixPorts.clear();
		if (!xmlStrcmp(root->name, reinterpret_cast<const xmlChar*>("audioPolicyConfiguration"))) {
		std::string raw{getXmlAttribute(root, "version")};
		for (auto* child = root->xmlChildrenNode; child != nullptr; child = child->next) {
		if (!xmlStrcmp(child->name, reinterpret_cast<const xmlChar*>("modules"))) {
		xmlNode* root = child;
		for (auto* child = root->xmlChildrenNode; child != nullptr; child = child->next) {
		if (!xmlStrcmp(child->name, reinterpret_cast<const xmlChar*>("module"))) {
		xmlNode* root = child;
		for (auto* child = root->xmlChildrenNode; child != nullptr;
		child = child->next) {
		if (!xmlStrcmp(child->name,
		reinterpret_cast<const xmlChar*>("mixPorts"))) {
		xmlNode* root = child;
		for (auto* child = root->xmlChildrenNode; child != nullptr;
		child = child->next) {
		if (!xmlStrcmp(child->name,
		reinterpret_cast<const xmlChar*>("mixPort"))) {
		MixPort mixPort;
		xmlNode* root = child;
		mixPort.name = getXmlAttribute(root, "name");
		mixPort.role = getXmlAttribute(root, "role");
		mixPort.flags = getXmlAttribute(root, "flags");
		if (mixPort.role == "source") mixPorts.push_back(mixPort);
		}
		}
		} else if (!xmlStrcmp(child->name, reinterpret_cast<const xmlChar*>(
		"attachedDevices"))) {
		xmlNode* root = child;
		for (auto* child = root->xmlChildrenNode; child != nullptr;
		child = child->next) {
		if (!xmlStrcmp(child->name,
		reinterpret_cast<const xmlChar*>("item"))) {
		auto xmlValue = make_xmlUnique(xmlNodeListGetString(
		child->doc, child->xmlChildrenNode, 1));
		if (xmlValue == nullptr) {
		raw = "";
		} else {
		raw = reinterpret_cast<const char*>(xmlValue.get());
		}
		std::string& value = raw;
		attachedDevices.push_back(std::move(value));
		}
		}
		} else if (!xmlStrcmp(child->name,
		reinterpret_cast<const xmlChar*>("routes"))) {
		xmlNode* root = child;
		for (auto* child = root->xmlChildrenNode; child != nullptr;
		child = child->next) {
		if (!xmlStrcmp(child->name,
		reinterpret_cast<const xmlChar*>("route"))) {
		Route route;
		xmlNode* root = child;
		route.name = getXmlAttribute(root, "name");
		route.sources = getXmlAttribute(root, "sources");
		route.sink = getXmlAttribute(root, "sink");
		routes.push_back(route);
		}
		}
		}
		}
		}
		}
		}
		}
		}
		return OK;
		}

		// UNIT TEST
		TEST(AudioTrackTest, TestPerformanceMode) {
		std::vector<std::string> attachedDevices;
		std::vector<MixPort> mixPorts;
		std::vector<Route> routes;
		EXPECT_EQ(OK, parse_audio_policy_configuration_xml(attachedDevices, mixPorts, routes));
		std::string output_flags_string[] = {"AUDIO_OUTPUT_FLAG_FAST", "AUDIO_OUTPUT_FLAG_DEEP_BUFFER"};
		audio_output_flags_t output_flags[] = {AUDIO_OUTPUT_FLAG_FAST, AUDIO_OUTPUT_FLAG_DEEP_BUFFER};
		audio_flags_mask_t flags[] = {AUDIO_FLAG_LOW_LATENCY, AUDIO_FLAG_DEEP_BUFFER};
		bool hasFlag = false;
		for (int i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
		hasFlag = false;
		for (int j = 0; j < mixPorts.size() && !hasFlag; j++) {
		MixPort port = mixPorts[j];
		if (port.role == "source" && port.flags.find(output_flags_string[i]) != -1) {
		for (int k = 0; k < routes.size() && !hasFlag; k++) {
		if (routes[k].sources.find(port.name) != -1 &&
		std::find(attachedDevices.begin(), attachedDevices.end(), routes[k].sink) !=
		attachedDevices.end()) {
		hasFlag = true;
		std::cerr << "found port with flag " << output_flags_string[i] << "@ "
		<< " port :: name : " << port.name << " role : " << port.role
		<< " port :: flags : " << port.flags
		<< " connected via route name : " << routes[k].name
		<< " route sources : " << routes[k].sources
		<< " route sink : " << routes[k].sink << std::endl;
		}
		}
		}
		}
		if (!hasFlag) continue;
		audio_attributes_t attributes = AUDIO_ATTRIBUTES_INITIALIZER;
		attributes.usage = AUDIO_USAGE_MEDIA;
		attributes.content_type = AUDIO_CONTENT_TYPE_MUSIC;
		attributes.flags = flags[i];
		std::unique_ptr<AudioPlayback> ap(new AudioPlayback(
		0, AUDIO_FORMAT_PCM_16_BIT, AUDIO_CHANNEL_OUT_STEREO, AUDIO_OUTPUT_FLAG_NONE,
		AUDIO_SESSION_NONE, AudioTrack::TRANSFER_OBTAIN, &attributes));
		ASSERT_NE(nullptr, ap);
		ASSERT_EQ(OK, ap->loadResource("/data/local/tmp/bbb_2ch_24kHz_s16le.raw"))
		<< "Unable to open Resource";
		EXPECT_EQ(OK, ap->create()) << "track creation failed";
		sp<OnAudioDeviceUpdateNotifier> cb = new OnAudioDeviceUpdateNotifier();
		EXPECT_EQ(OK, ap->getAudioTrackHandle()->addAudioDeviceCallback(cb));
		EXPECT_EQ(OK, ap->start()) << "audio track start failed";
		EXPECT_EQ(OK, ap->onProcess());
		EXPECT_EQ(OK, cb->waitForAudioDeviceCb());
		EXPECT_TRUE(checkPatchPlayback(cb->mAudioIo, cb->mDeviceId));
		EXPECT_NE(0, ap->getAudioTrackHandle()->getFlags() & output_flags[i]);
		audio_patch patch;
		EXPECT_EQ(OK, getPatchForOutputMix(cb->mAudioIo, patch));
		for (auto j = 0; j < patch.num_sources; j++) {
		if (patch.sources[j].type == AUDIO_PORT_TYPE_MIX &&
		patch.sources[j].ext.mix.handle == cb->mAudioIo) {
		if ((patch.sources[j].flags.output & output_flags[i]) == 0) {
		ADD_FAILURE() << "expected output flag " << output_flags[i] << " is absent";
		std::cerr << dumpPortConfig(patch.sources[j]);
		}
		}
		}
		ap->stop();
		ap->getAudioTrackHandle()->removeAudioDeviceCallback(cb);
		}
		}

		TEST(AudioTrackTest, TestRemoteSubmix) {
		std::vector<std::string> attachedDevices;
		std::vector<MixPort> mixPorts;
		std::vector<Route> routes;
		EXPECT_EQ(OK, parse_audio_policy_configuration_xml(attachedDevices, mixPorts, routes));
		bool hasFlag = false;
		for (int j = 0; j < attachedDevices.size() && !hasFlag; j++) {
		if (attachedDevices[j].find("Remote Submix") != -1) hasFlag = true;
		}
		if (!hasFlag) GTEST_SKIP() << " Device does not have Remote Submix port.";
		sp<AudioCapture> capture = new AudioCapture(AUDIO_SOURCE_REMOTE_SUBMIX, 48000,
		AUDIO_FORMAT_PCM_16_BIT, AUDIO_CHANNEL_IN_STEREO);
		ASSERT_NE(nullptr, capture);
		ASSERT_EQ(OK, capture->create()) << "record creation failed";

		std::unique_ptr<AudioPlayback> playback = std::make_unique<AudioPlayback>(
		48000, AUDIO_FORMAT_PCM_16_BIT, AUDIO_CHANNEL_OUT_STEREO, AUDIO_OUTPUT_FLAG_NONE,
		AUDIO_SESSION_NONE);
		ASSERT_NE(nullptr, playback);
		ASSERT_EQ(OK, playback->loadResource("/data/local/tmp/bbb_2ch_24kHz_s16le.raw"))
		<< "Unable to open Resource";
		ASSERT_EQ(OK, playback->create()) << "track creation failed";

		audio_port_v7 port;
		status_t status = getPortByAttributes(AUDIO_PORT_ROLE_SOURCE, AUDIO_PORT_TYPE_DEVICE,
		AUDIO_DEVICE_IN_REMOTE_SUBMIX, port);
		EXPECT_EQ(OK, status) << "Could not find port";

		EXPECT_EQ(OK, capture->start()) << "start recording failed";
		EXPECT_EQ(port.id, capture->getAudioRecordHandle()->getRoutedDeviceId())
		<< "Capture NOT routed on expected port";

		status = getPortByAttributes(AUDIO_PORT_ROLE_SINK, AUDIO_PORT_TYPE_DEVICE,
		AUDIO_DEVICE_OUT_REMOTE_SUBMIX, port);
		EXPECT_EQ(OK, status) << "Could not find port";

		EXPECT_EQ(OK, playback->start()) << "audio track start failed";
		EXPECT_EQ(OK, playback->onProcess());
		ASSERT_EQ(port.id, playback->getAudioTrackHandle()->getRoutedDeviceId())
		<< "Playback NOT routed on expected port";
		capture->stop();
		playback->stop();
		}

media/libaudioclient/tests/audiotrack_tests.cpp

+1 −0

Original line number	Diff line number	Diff line
		@@ -68,6 +68,7 @@ TEST(AudioTrackTest, TestAudioCbNotifier) {
		EXPECT_EQ(AUDIO_PORT_HANDLE_NONE, cbOld->mDeviceId);
		EXPECT_NE(AUDIO_IO_HANDLE_NONE, cb->mAudioIo);
		EXPECT_NE(AUDIO_PORT_HANDLE_NONE, cb->mDeviceId);
		EXPECT_TRUE(checkPatchPlayback(cb->mAudioIo, cb->mDeviceId));
		EXPECT_EQ(BAD_VALUE, ap->getAudioTrackHandle()->removeAudioDeviceCallback(nullptr));
		EXPECT_EQ(INVALID_OPERATION, ap->getAudioTrackHandle()->removeAudioDeviceCallback(cbOld));
		EXPECT_EQ(OK, ap->getAudioTrackHandle()->removeAudioDeviceCallback(cb));