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/*
* Copyright (C) 2014 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_TAG "HdmiCecControllerJni"
#define LOG_NDEBUG 1
#include <nativehelper/JNIHelp.h>
#include <nativehelper/ScopedPrimitiveArray.h>
#include <android/hardware/tv/cec/1.0/IHdmiCec.h>
#include <android/hardware/tv/cec/1.0/IHdmiCecCallback.h>
#include <android/hardware/tv/cec/1.0/types.h>
#include <android_os_MessageQueue.h>
#include <android_runtime/AndroidRuntime.h>
#include <android_runtime/Log.h>
#include <sys/param.h>
#include <utils/Errors.h>
#include <utils/Looper.h>
#include <utils/RefBase.h>
using ::android::hardware::tv::cec::V1_0::CecLogicalAddress;
using ::android::hardware::tv::cec::V1_0::CecMessage;
using ::android::hardware::tv::cec::V1_0::HdmiPortInfo;
using ::android::hardware::tv::cec::V1_0::HotplugEvent;
using ::android::hardware::tv::cec::V1_0::IHdmiCec;
using ::android::hardware::tv::cec::V1_0::IHdmiCecCallback;
using ::android::hardware::tv::cec::V1_0::MaxLength;
using ::android::hardware::tv::cec::V1_0::OptionKey;
using ::android::hardware::tv::cec::V1_0::Result;
using ::android::hardware::tv::cec::V1_0::SendMessageResult;
using ::android::hardware::Return;
using ::android::hardware::Void;
using ::android::hardware::hidl_vec;
using ::android::hardware::hidl_string;
namespace android {
static struct {
jmethodID handleIncomingCecCommand;
jmethodID handleHotplug;
} gHdmiCecControllerClassInfo;
class HdmiCecController {
public:
HdmiCecController(sp<IHdmiCec> hdmiCec, jobject callbacksObj, const sp<Looper>& looper);
~HdmiCecController();
// Send message to other device. Note that it runs in IO thread.
int sendMessage(const CecMessage& message);
// Add a logical address to device.
int addLogicalAddress(CecLogicalAddress address);
// Clear all logical address registered to the device.
void clearLogicaladdress();
// Get physical address of device.
int getPhysicalAddress();
// Get CEC version from driver.
int getVersion();
// Get vendor id used for vendor command.
uint32_t getVendorId();
// Get Port information on all the HDMI ports.
jobjectArray getPortInfos();
// Set an option to CEC HAL.
void setOption(OptionKey key, bool enabled);
// Informs CEC HAL about the current system language.
void setLanguage(hidl_string language);
// Enable audio return channel.
void enableAudioReturnChannel(int port, bool flag);
// Whether to hdmi device is connected to the given port.
bool isConnected(int port);
jobject getCallbacksObj() const {
return mCallbacksObj;
}
private:
class HdmiCecCallback : public IHdmiCecCallback {
public:
HdmiCecCallback(HdmiCecController* controller) : mController(controller) {};
Return<void> onCecMessage(const CecMessage& event) override;
Return<void> onHotplugEvent(const HotplugEvent& event) override;
private:
HdmiCecController* mController;
};
static const int INVALID_PHYSICAL_ADDRESS = 0xFFFF;
sp<IHdmiCec> mHdmiCec;
jobject mCallbacksObj;
sp<IHdmiCecCallback> mHdmiCecCallback;
sp<Looper> mLooper;
};
// Handler class to delegate incoming message to service thread.
class HdmiCecEventHandler : public MessageHandler {
public:
enum EventType {
CEC_MESSAGE,
HOT_PLUG
};
HdmiCecEventHandler(HdmiCecController* controller, const CecMessage& cecMessage)
: mController(controller),
mCecMessage(cecMessage) {}
HdmiCecEventHandler(HdmiCecController* controller, const HotplugEvent& hotplugEvent)
: mController(controller),
mHotplugEvent(hotplugEvent) {}
virtual ~HdmiCecEventHandler() {}
void handleMessage(const Message& message) {
switch (message.what) {
case EventType::CEC_MESSAGE:
propagateCecCommand(mCecMessage);
break;
case EventType::HOT_PLUG:
propagateHotplugEvent(mHotplugEvent);
break;
default:
// TODO: add more type whenever new type is introduced.
break;
}
}
private:
// Propagate the message up to Java layer.
void propagateCecCommand(const CecMessage& message) {
JNIEnv* env = AndroidRuntime::getJNIEnv();
jint srcAddr = static_cast<jint>(message.initiator);
jint dstAddr = static_cast<jint>(message.destination);
jbyteArray body = env->NewByteArray(message.body.size());
const jbyte* bodyPtr = reinterpret_cast<const jbyte *>(message.body.data());
env->SetByteArrayRegion(body, 0, message.body.size(), bodyPtr);
env->CallVoidMethod(mController->getCallbacksObj(),
gHdmiCecControllerClassInfo.handleIncomingCecCommand, srcAddr,
dstAddr, body);
env->DeleteLocalRef(body);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
}
void propagateHotplugEvent(const HotplugEvent& event) {
// Note that this method should be called in service thread.
JNIEnv* env = AndroidRuntime::getJNIEnv();
jint port = static_cast<jint>(event.portId);
jboolean connected = (jboolean) event.connected;
env->CallVoidMethod(mController->getCallbacksObj(),
gHdmiCecControllerClassInfo.handleHotplug, port, connected);
checkAndClearExceptionFromCallback(env, __FUNCTION__);
}
// static
static void checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) {
if (env->ExceptionCheck()) {
ALOGE("An exception was thrown by callback '%s'.", methodName);
LOGE_EX(env);
env->ExceptionClear();
}
}
HdmiCecController* mController;
CecMessage mCecMessage;
HotplugEvent mHotplugEvent;
};
HdmiCecController::HdmiCecController(sp<IHdmiCec> hdmiCec,
jobject callbacksObj, const sp<Looper>& looper)
: mHdmiCec(hdmiCec),
mCallbacksObj(callbacksObj),
mLooper(looper) {
mHdmiCecCallback = new HdmiCecCallback(this);
Return<void> ret = mHdmiCec->setCallback(mHdmiCecCallback);
if (!ret.isOk()) {
ALOGE("Failed to set a cec callback.");
}
}
HdmiCecController::~HdmiCecController() {
Return<void> ret = mHdmiCec->setCallback(nullptr);
if (!ret.isOk()) {
ALOGE("Failed to set a cec callback.");
}
}
int HdmiCecController::sendMessage(const CecMessage& message) {
// TODO: propagate send_message's return value.
Return<SendMessageResult> ret = mHdmiCec->sendMessage(message);
if (!ret.isOk()) {
ALOGE("Failed to send CEC message.");
return static_cast<int>(SendMessageResult::FAIL);
}
return static_cast<int>((SendMessageResult) ret);
}
int HdmiCecController::addLogicalAddress(CecLogicalAddress address) {
Return<Result> ret = mHdmiCec->addLogicalAddress(address);
if (!ret.isOk()) {
ALOGE("Failed to add a logical address.");
return static_cast<int>(Result::FAILURE_UNKNOWN);
}
return static_cast<int>((Result) ret);
}
void HdmiCecController::clearLogicaladdress() {
Return<void> ret = mHdmiCec->clearLogicalAddress();
if (!ret.isOk()) {
ALOGE("Failed to clear logical address.");
}
}
int HdmiCecController::getPhysicalAddress() {
Result result;
uint16_t addr;
Return<void> ret = mHdmiCec->getPhysicalAddress([&result, &addr](Result res, uint16_t paddr) {
result = res;
addr = paddr;
});
if (!ret.isOk()) {
ALOGE("Failed to get physical address.");
return INVALID_PHYSICAL_ADDRESS;
}
return result == Result::SUCCESS ? addr : INVALID_PHYSICAL_ADDRESS;
}
int HdmiCecController::getVersion() {
Return<int32_t> ret = mHdmiCec->getCecVersion();
if (!ret.isOk()) {
ALOGE("Failed to get cec version.");
}
return ret;
}
uint32_t HdmiCecController::getVendorId() {
Return<uint32_t> ret = mHdmiCec->getVendorId();
if (!ret.isOk()) {
ALOGE("Failed to get vendor id.");
}
return ret;
}
jobjectArray HdmiCecController::getPortInfos() {
JNIEnv* env = AndroidRuntime::getJNIEnv();
jclass hdmiPortInfo = env->FindClass("android/hardware/hdmi/HdmiPortInfo");
if (hdmiPortInfo == NULL) {
return NULL;
}
jmethodID ctor = env->GetMethodID(hdmiPortInfo, "<init>", "(IIIZZZ)V");
if (ctor == NULL) {
return NULL;
}
hidl_vec<HdmiPortInfo> ports;
Return<void> ret = mHdmiCec->getPortInfo([&ports](hidl_vec<HdmiPortInfo> list) {
ports = list;
});
if (!ret.isOk()) {
ALOGE("Failed to get port information.");
return NULL;
}
jobjectArray res = env->NewObjectArray(ports.size(), hdmiPortInfo, NULL);
// MHL support field will be obtained from MHL HAL. Leave it to false.
jboolean mhlSupported = (jboolean) 0;
for (size_t i = 0; i < ports.size(); ++i) {
jboolean cecSupported = (jboolean) ports[i].cecSupported;
jboolean arcSupported = (jboolean) ports[i].arcSupported;
jobject infoObj = env->NewObject(hdmiPortInfo, ctor, ports[i].portId, ports[i].type,
ports[i].physicalAddress, cecSupported, mhlSupported, arcSupported);
env->SetObjectArrayElement(res, i, infoObj);
}
return res;
}
void HdmiCecController::setOption(OptionKey key, bool enabled) {
Return<void> ret = mHdmiCec->setOption(key, enabled);
if (!ret.isOk()) {
ALOGE("Failed to set option.");
}
}
void HdmiCecController::setLanguage(hidl_string language) {
Return<void> ret = mHdmiCec->setLanguage(language);
if (!ret.isOk()) {
ALOGE("Failed to set language.");
}
}
// Enable audio return channel.
void HdmiCecController::enableAudioReturnChannel(int port, bool enabled) {
Return<void> ret = mHdmiCec->enableAudioReturnChannel(port, enabled);
if (!ret.isOk()) {
ALOGE("Failed to enable/disable ARC.");
}
}
// Whether to hdmi device is connected to the given port.
bool HdmiCecController::isConnected(int port) {
Return<bool> ret = mHdmiCec->isConnected(port);
if (!ret.isOk()) {
ALOGE("Failed to get connection info.");
}
return ret;
}
Return<void> HdmiCecController::HdmiCecCallback::onCecMessage(const CecMessage& message) {
sp<HdmiCecEventHandler> handler(new HdmiCecEventHandler(mController, message));
mController->mLooper->sendMessage(handler, HdmiCecEventHandler::EventType::CEC_MESSAGE);
return Void();
}
Return<void> HdmiCecController::HdmiCecCallback::onHotplugEvent(const HotplugEvent& event) {
sp<HdmiCecEventHandler> handler(new HdmiCecEventHandler(mController, event));
mController->mLooper->sendMessage(handler, HdmiCecEventHandler::EventType::HOT_PLUG);
return Void();
}
//------------------------------------------------------------------------------
#define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \
var = env->GetMethodID(clazz, methodName, methodDescriptor); \
LOG_FATAL_IF(! (var), "Unable to find method " methodName);
static jlong nativeInit(JNIEnv* env, jclass clazz, jobject callbacksObj,
jobject messageQueueObj) {
// TODO(b/31632518)
sp<IHdmiCec> hdmiCec = IHdmiCec::getService();
if (hdmiCec == nullptr) {
ALOGE("Couldn't get tv.cec service.");
return 0;
}
sp<MessageQueue> messageQueue =
android_os_MessageQueue_getMessageQueue(env, messageQueueObj);
HdmiCecController* controller = new HdmiCecController(
hdmiCec,
env->NewGlobalRef(callbacksObj),
messageQueue->getLooper());
GET_METHOD_ID(gHdmiCecControllerClassInfo.handleIncomingCecCommand, clazz,
"handleIncomingCecCommand", "(II[B)V");
GET_METHOD_ID(gHdmiCecControllerClassInfo.handleHotplug, clazz,
"handleHotplug", "(IZ)V");
return reinterpret_cast<jlong>(controller);
}
static jint nativeSendCecCommand(JNIEnv* env, jclass clazz, jlong controllerPtr,
jint srcAddr, jint dstAddr, jbyteArray body) {
CecMessage message;
message.initiator = static_cast<CecLogicalAddress>(srcAddr);
message.destination = static_cast<CecLogicalAddress>(dstAddr);
jsize len = env->GetArrayLength(body);
ScopedByteArrayRO bodyPtr(env, body);
size_t bodyLength = MIN(static_cast<size_t>(len),
static_cast<size_t>(MaxLength::MESSAGE_BODY));
message.body.resize(bodyLength);
for (size_t i = 0; i < bodyLength; ++i) {
message.body[i] = static_cast<uint8_t>(bodyPtr[i]);
}
HdmiCecController* controller =
reinterpret_cast<HdmiCecController*>(controllerPtr);
return controller->sendMessage(message);
}
static jint nativeAddLogicalAddress(JNIEnv* env, jclass clazz, jlong controllerPtr,
jint logicalAddress) {
HdmiCecController* controller = reinterpret_cast<HdmiCecController*>(controllerPtr);
return controller->addLogicalAddress(static_cast<CecLogicalAddress>(logicalAddress));
}
static void nativeClearLogicalAddress(JNIEnv* env, jclass clazz, jlong controllerPtr) {
HdmiCecController* controller = reinterpret_cast<HdmiCecController*>(controllerPtr);
controller->clearLogicaladdress();
}
static jint nativeGetPhysicalAddress(JNIEnv* env, jclass clazz, jlong controllerPtr) {
HdmiCecController* controller = reinterpret_cast<HdmiCecController*>(controllerPtr);
return controller->getPhysicalAddress();
}
static jint nativeGetVersion(JNIEnv* env, jclass clazz, jlong controllerPtr) {
HdmiCecController* controller = reinterpret_cast<HdmiCecController*>(controllerPtr);
return controller->getVersion();
}
static jint nativeGetVendorId(JNIEnv* env, jclass clazz, jlong controllerPtr) {
HdmiCecController* controller = reinterpret_cast<HdmiCecController*>(controllerPtr);
return controller->getVendorId();
}
static jobjectArray nativeGetPortInfos(JNIEnv* env, jclass clazz, jlong controllerPtr) {
HdmiCecController* controller = reinterpret_cast<HdmiCecController*>(controllerPtr);
return controller->getPortInfos();
}
static void nativeSetOption(JNIEnv* env, jclass clazz, jlong controllerPtr, jint flag, jint value) {
HdmiCecController* controller = reinterpret_cast<HdmiCecController*>(controllerPtr);
controller->setOption(static_cast<OptionKey>(flag), value > 0 ? true : false);
}
static void nativeSetLanguage(JNIEnv* env, jclass clazz, jlong controllerPtr, jstring language) {
HdmiCecController* controller = reinterpret_cast<HdmiCecController*>(controllerPtr);
const char *languageStr = env->GetStringUTFChars(language, NULL);
controller->setLanguage(languageStr);
env->ReleaseStringUTFChars(language, languageStr);
}
static void nativeEnableAudioReturnChannel(JNIEnv* env, jclass clazz, jlong controllerPtr,
jint port, jboolean enabled) {
HdmiCecController* controller = reinterpret_cast<HdmiCecController*>(controllerPtr);
controller->enableAudioReturnChannel(port, enabled == JNI_TRUE);
}
static jboolean nativeIsConnected(JNIEnv* env, jclass clazz, jlong controllerPtr, jint port) {
HdmiCecController* controller = reinterpret_cast<HdmiCecController*>(controllerPtr);
return controller->isConnected(port) ? JNI_TRUE : JNI_FALSE ;
}
static const JNINativeMethod sMethods[] = {
/* name, signature, funcPtr */
{ "nativeInit",
"(Lcom/android/server/hdmi/HdmiCecController;Landroid/os/MessageQueue;)J",
(void *) nativeInit },
{ "nativeSendCecCommand", "(JII[B)I", (void *) nativeSendCecCommand },
{ "nativeAddLogicalAddress", "(JI)I", (void *) nativeAddLogicalAddress },
{ "nativeClearLogicalAddress", "(J)V", (void *) nativeClearLogicalAddress },
{ "nativeGetPhysicalAddress", "(J)I", (void *) nativeGetPhysicalAddress },
{ "nativeGetVersion", "(J)I", (void *) nativeGetVersion },
{ "nativeGetVendorId", "(J)I", (void *) nativeGetVendorId },
{ "nativeGetPortInfos",
"(J)[Landroid/hardware/hdmi/HdmiPortInfo;",
(void *) nativeGetPortInfos },
{ "nativeSetOption", "(JIZ)V", (void *) nativeSetOption },
{ "nativeSetLanguage", "(JLjava/lang/String;)V", (void *) nativeSetLanguage },
{ "nativeEnableAudioReturnChannel", "(JIZ)V", (void *) nativeEnableAudioReturnChannel },
{ "nativeIsConnected", "(JI)Z", (void *) nativeIsConnected },
};
#define CLASS_PATH "com/android/server/hdmi/HdmiCecController"
int register_android_server_hdmi_HdmiCecController(JNIEnv* env) {
int res = jniRegisterNativeMethods(env, CLASS_PATH, sMethods, NELEM(sMethods));
LOG_FATAL_IF(res < 0, "Unable to register native methods.");
(void)res; // Don't scream about unused variable in the LOG_NDEBUG case
return 0;
}
} /* namespace android */