Hi3751 V352 android9.0 适配红外遥控器

海思Android解决方案在原生Android基础上，基于传统电视用户使用习惯，增加了对红外遥控器和按键板的支持，使传统电视用户能更好适应智能电视方案。

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一.功能描述：

在系统启动时，会先启动android_ir_user；vinput设备节点将按键事件转换为Android的标准输入发送到input。

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二.文件路径

按键适配源码路径如下：

• framework层配置文件：
  frameworks/base/core/java/android/view/KeyEvent.java
  frameworks/base/core/res/res/values/attrs.xml
• native层配置文件：
  frameworks/native/include/android/keycodes.h
  frameworks/native/include/input/InputEventLabels.h
• 海思定制文件：
  device/hisilicon/bigfish/prebuilts/Vendor_0001_Product_0001.kl
• 海思红外遥控器配处理程序代码：
  device/hisilicon/bigfish/system/ir_user/

三.遥控器按键适配

1> IR适配

需要先打开打印,从而获取去红外码，再依次进行 linux keycode 和 Android frameworks映射。

diff --git a/device/hisilicon/bigfish/system/ir_user/ir_user.cpp b/device/hisilicon/bigfish/system/ir_user/ir_user.cpp
index 335d698e80..db082c3c3f 100644
--- a/device/hisilicon/bigfish/system/ir_user/ir_user.cpp
+++ b/device/hisilicon/bigfish/system/ir_user/ir_user.cpp
@@ -550,7 +550,7 @@ void IrSampleThread()
         int ret = IR_GetValueWithProtocol(status, key, name, sizeof(name), readTimeout);
         if (ret) {
   
             if (!g_debugIrEnable) {
   
-                printf("IR_GetValueWithProtocol ret = %d ", ret);
+                printf("IR_GetValueWithProtocol ret = %d\n", ret);
                 continue;
             }
             IrAutomatedTest(num, key, status);
@@ -558,13 +558,14 @@ void IrSampleThread()
         isMouseEventKey = false;
         bool isBrowserMouseMode = false;
         SetBrowserMouseMode(isBrowserMouseMode);
+    printf("IR_GetValueWithProtocol linuxKeycode = %x---------- key=%llx\n",linuxKeycode ,key);
         if (!SetLinuxKeycode(linuxKeycode, key)) {
   
             continue;
         }
         // shield PIP(WINDOW) key
         if (linuxKeycode == WINDOW) {
   
             isMouseEventKey = true;
-            XLOGD("you have pressed PIP key\n ,yCoordinate is %d ", yCoordinate);
+            XLOGD("you have pressed PIP key\n ,yCoordinate is %d\n", yCoordinate);
             if (status == HI_UNF_KEY_STATUS_UP) {
   
                 u32MouseMode = !u32MouseMode;
             }

2> 查看红外遥控器发射的按键值

串口输入以下命令：

android_