CEC: Add AIDL interface
Split and convert to AIDL the HDMI CEC HAL into two separate HALs -
CEC and HDMI. CEC handles the CEC messages while HDMI handles the
hotplug and physical ports.
Also add the default and VTS for the two HALs.
Bug: 233026642
Test: m android.hardware.tv.cec-update-api
make
Change-Id: I67c6d7aeea6922f69a1ffa7acb36c811c80afabf
diff --git a/tv/hdmi/aidl/default/HdmiMock.cpp b/tv/hdmi/aidl/default/HdmiMock.cpp
new file mode 100644
index 0000000..0cf5118
--- /dev/null
+++ b/tv/hdmi/aidl/default/HdmiMock.cpp
@@ -0,0 +1,178 @@
+/*
+ * Copyright (C) 2022 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 "android.hardware.tv.hdmi"
+#include <android-base/logging.h>
+#include <fcntl.h>
+#include <utils/Log.h>
+
+#include "HdmiMock.h"
+
+using ndk::ScopedAStatus;
+
+namespace android {
+namespace hardware {
+namespace tv {
+namespace hdmi {
+namespace implementation {
+
+void HdmiMock::serviceDied(void* cookie) {
+ ALOGE("HdmiMock died");
+ auto hdmi = static_cast<HdmiMock*>(cookie);
+ hdmi->mHdmiThreadRun = false;
+}
+
+ScopedAStatus HdmiMock::getPortInfo(std::vector<HdmiPortInfo>* _aidl_return) {
+ *_aidl_return = mPortInfos;
+ return ScopedAStatus::ok();
+}
+
+ScopedAStatus HdmiMock::isConnected(int32_t portId, bool* _aidl_return) {
+ // Maintain port connection status and update on hotplug event
+ if (portId <= mTotalPorts && portId >= 1) {
+ *_aidl_return = mPortConnectionStatus[portId];
+ } else {
+ *_aidl_return = false;
+ }
+
+ return ScopedAStatus::ok();
+}
+
+ScopedAStatus HdmiMock::setCallback(const std::shared_ptr<IHdmiCallback>& callback) {
+ if (mCallback != nullptr) {
+ mCallback = nullptr;
+ }
+
+ if (callback != nullptr) {
+ mCallback = callback;
+ AIBinder_linkToDeath(this->asBinder().get(), mDeathRecipient.get(), 0 /* cookie */);
+
+ mInputFile = open(HDMI_MSG_IN_FIFO, O_RDWR | O_CLOEXEC);
+ pthread_create(&mThreadId, NULL, __threadLoop, this);
+ pthread_setname_np(mThreadId, "hdmi_loop");
+ }
+ return ScopedAStatus::ok();
+}
+
+void* HdmiMock::__threadLoop(void* user) {
+ HdmiMock* const self = static_cast<HdmiMock*>(user);
+ self->threadLoop();
+ return 0;
+}
+
+int HdmiMock::readMessageFromFifo(unsigned char* buf, int msgCount) {
+ if (msgCount <= 0 || !buf) {
+ return 0;
+ }
+
+ int ret = -1;
+ // Maybe blocked at driver
+ ret = read(mInputFile, buf, msgCount);
+ if (ret < 0) {
+ ALOGE("[halimp_aidl] read :%s failed, ret:%d\n", HDMI_MSG_IN_FIFO, ret);
+ return -1;
+ }
+
+ return ret;
+}
+
+void HdmiMock::printEventBuf(const char* msg_buf, int len) {
+ int i, size = 0;
+ const int bufSize = MESSAGE_BODY_MAX_LENGTH * 3;
+ // Use 2 characters for each byte in the message plus 1 space
+ char buf[bufSize] = {0};
+
+ // Messages longer than max length will be truncated.
+ for (i = 0; i < len && size < bufSize; i++) {
+ size += sprintf(buf + size, " %02x", msg_buf[i]);
+ }
+ ALOGD("[halimp_aidl] %s, msg:%.*s", __FUNCTION__, size, buf);
+}
+
+void HdmiMock::handleHotplugMessage(unsigned char* msgBuf) {
+ bool connected = ((msgBuf[3]) & 0xf) > 0;
+ int32_t portId = static_cast<uint32_t>(msgBuf[0] & 0xf);
+
+ if (portId > static_cast<int32_t>(mPortInfos.size())) {
+ ALOGD("[halimp_aidl] ignore hot plug message, id %x does not exist", portId);
+ return;
+ }
+
+ ALOGD("[halimp_aidl] hot plug port id %x, is connected %x", (msgBuf[0] & 0xf),
+ (msgBuf[3] & 0xf));
+ mPortConnectionStatus[portId] = connected;
+ if (mPortInfos[portId].type == HdmiPortType::OUTPUT) {
+ mPhysicalAddress = (connected ? 0xffff : ((msgBuf[1] << 8) | (msgBuf[2])));
+ mPortInfos[portId].physicalAddress = mPhysicalAddress;
+ ALOGD("[halimp_aidl] hot plug physical address %x", mPhysicalAddress);
+ }
+
+ if (mCallback != nullptr) {
+ mCallback->onHotplugEvent(connected, portId);
+ }
+}
+
+void HdmiMock::threadLoop() {
+ ALOGD("[halimp_aidl] threadLoop start.");
+ unsigned char msgBuf[MESSAGE_BODY_MAX_LENGTH];
+ int r = -1;
+
+ // Open the input pipe
+ while (mInputFile < 0) {
+ usleep(1000 * 1000);
+ mInputFile = open(HDMI_MSG_IN_FIFO, O_RDONLY | O_CLOEXEC);
+ }
+ ALOGD("[halimp_aidl] file open ok, fd = %d.", mInputFile);
+
+ while (mHdmiThreadRun) {
+ memset(msgBuf, 0, sizeof(msgBuf));
+ // Try to get a message from dev.
+ // echo -n -e '\x04\x83' >> /dev/cec
+ r = readMessageFromFifo(msgBuf, MESSAGE_BODY_MAX_LENGTH);
+ if (r <= 1) {
+ // Ignore received ping messages
+ continue;
+ }
+
+ printEventBuf((const char*)msgBuf, r);
+
+ if (((msgBuf[0] >> 4) & 0xf) == 0xf) {
+ handleHotplugMessage(msgBuf);
+ }
+ }
+
+ ALOGD("[halimp_aidl] thread end.");
+}
+
+HdmiMock::HdmiMock() {
+ ALOGE("[halimp_aidl] Opening a virtual HDMI HAL for testing and virtual machine.");
+ mCallback = nullptr;
+ mPortInfos.resize(mTotalPorts);
+ mPortConnectionStatus.resize(mTotalPorts);
+ mPortInfos[0] = {.type = HdmiPortType::OUTPUT,
+ .portId = static_cast<uint32_t>(1),
+ .cecSupported = true,
+ .arcSupported = false,
+ .physicalAddress = mPhysicalAddress};
+ mPortConnectionStatus[0] = false;
+ mDeathRecipient = ndk::ScopedAIBinder_DeathRecipient(AIBinder_DeathRecipient_new(serviceDied));
+}
+
+} // namespace implementation
+} // namespace hdmi
+} // namespace tv
+} // namespace hardware
+} // namespace android