Android11添加AIDL系统服务及HIDL接口服务
创始人
2024-04-28 18:17:50
0次
软件平台：Android11
硬件平台：QCS6125
直接上需求：首先添加自定义系统服务并且开机自启动；其次该服务要调用HW层service的方法。
前半部分之前添加过N次，不是难点，后半部分的实现最开始也是想借助binder通信，直接去调用接口，遇到了一大堆selinux权限问题，这是google针对android8.0之后新添加的策略，使用了三个binder，分别是标准/dev/binder该节点主要用于System分区的系统服务去注册使用，/dev/hwbinder该节点主要用于运行于HW的服务注册使用，/dev/vndbinder该节点主要用于运行在vendor分区的服务注册使用，而需求中所说的HW层的服务注册的是vndbinder，自定义的服务是binder，因此系统层面是隔离的，无法通过binder直接通信，只能通过hwbinder去迂回，因为binder可以跟hwbinder通信，而hwbinder可以和vndbinder交互，从而达到binder服务和vndbinder服务通信的目的。
前半部分（系统服务）的实现：
1、创建frameworks/base/core/java/android/app/yfd/目录，建立如下文件：
HandWriteManager.java
/************************************************************************** File Name: HandWriteManager.java* Author: kongbo * Mail: shenyoutianji@126.com * Created Time: 2022年11月21日 星期一 17时17分35秒************************************************************************/
package android.app.yfd;import android.content.Context;import android.os.RemoteException;import android.util.Slog;public class HandWriteManager {Context mContext;IHandWriteManager mService;static final String TAG = "HandWriteManager";public HandWriteManager(Context context, IHandWriteManager service) {mContext = context;mService = service;if (mService != null)Slog.d(TAG, " mService not null");}public void setRefreshMode(int mode) {if (mService != null) {Slog.d(TAG, " Will setRefreshMode");try {mService.setRefreshMode(mode);} catch (RemoteException e) {Slog.d(TAG, "RemoteException " + e);}}//return null;}public void commitRefreshArea(int x, int y, int h, int w) {if (mService != null) {Slog.d(TAG, " Will commitRefreshArea");try {mService.commitRefreshArea(x, y, h, w);} catch (RemoteException e) {Slog.d(TAG, "RemoteException " + e);}}}}
IHandWriteManager.aidl
/*** Hand Writes Service*/package android.app.yfd;interface IHandWriteManager {void setRefreshMode(int mode);void commitRefreshArea(int x, int y, int h, int w);}
frameworks/base/services/core/java/com/android/server目录添加HandWriteManagerService.java
/************************************************************************** File Name: HandWriteManagerService.java* Author: kongbo* Mail:nubility@gmail.com * Created Time: 2022年11月21日 星期一 17时36分04秒************************************************************************/
package com.android.server;import android.app.yfd.IHandWriteManager;import android.content.Context;import android.os.Build;import android.util.Slog;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.FileWriter;import java.io.FileReader;import java.io.IOException;public class HandWriteManagerService extends IHandWriteManager.Stub {private Context mContext;static final String TAG = "HandWriteManagerService";private boolean Debug = true;private final int LEISURE_MODE = 1;private final int WRITE_MODE = 2;private final int NETWORK_MODE = 3;private native void HandWriteServiceNative_setRefreshMode(int mode);private native void HandWriteServiceNative_Init();private native void HandWriteServiceNative_commitRefreshArea(int x, int y, int h, int w);public HandWriteManagerService(Context context) {//Slog.e(TAG," ====== call native method HandWriteServiceNative_Init");HandWriteServiceNative_Init();mContext = context;/*try {Slog.e(TAG," ====== Runtime will exec ======");Runtime.getRuntime().exec("su");Runtime.getRuntime().exec("vndservice call display.qservice 47 i32 2");Slog.e(TAG," ====== Runtime exec end ======");} catch (IOException e) {Slog.e(TAG," ====== Runtime exec has exception ======");e.printStackTrace();}*/}@Overridepublic void setRefreshMode(int mode) {BufferedWriter bufWriter = null;try {//bufWriter = new BufferedWriter(new FileWriter(LMAP_BRIGHTNESS_PATH));if (Debug)Slog.e(TAG," ====== write brightness:");HandWriteServiceNative_setRefreshMode(mode);//bufWriter.write(String.valueOf(brightness));//bufWriter.close();} catch (Exception e) {e.printStackTrace();}}@Overridepublic void commitRefreshArea(int x, int y, int h, int w) {HandWriteServiceNative_commitRefreshArea(x, y, h, w);}
}
向SystemServer完成注册：
diff --git a/core/java/android/app/SystemServiceRegistry.java b/core/java/android/app/SystemServiceRegistry.java
index e599a5ce81e..38473ee5e6e 100644
--- a/core/java/android/app/SystemServiceRegistry.java
+++ b/core/java/android/app/SystemServiceRegistry.java
@@ -43,6 +43,8 @@ import android.app.usage.IUsageStatsManager;import android.app.usage.NetworkStatsManager;import android.app.usage.StorageStatsManager;import android.app.usage.UsageStatsManager;
+import android.app.yfd.HandWriteManager;
+import android.app.yfd.IHandWriteManager;import android.appwidget.AppWidgetManager;import android.bluetooth.BluetoothManager;import android.companion.CompanionDeviceManager;
@@ -1189,6 +1191,17 @@ public final class SystemServiceRegistry {}});+ registerService(Context.HAND_WRITE_SERVICE, HandWriteManager.class,
+ new CachedServiceFetcher() {
+ @Override
+ public HandWriteManager createService(ContextImpl ctx)
+ throws ServiceNotFoundException {
+ IBinder b = ServiceManager.getServiceOrThrow(
+ Context.HAND_WRITE_SERVICE);
+ return new HandWriteManager(ctx, IHandWriteManager.Stub.asInterface(b));
+ }
+ });
+registerService(Context.SLICE_SERVICE, SliceManager.class,new CachedServiceFetcher() {@Override
diff --git a/core/java/android/app/SystemServiceRegistry.java b/core/java/android/app/SystemServiceRegistry.java
index e599a5ce81e..38473ee5e6e 100644
--- a/core/java/android/app/SystemServiceRegistry.java
+++ b/core/java/android/app/SystemServiceRegistry.java
@@ -43,6 +43,8 @@ import android.app.usage.IUsageStatsManager;import android.app.usage.NetworkStatsManager;import android.app.usage.StorageStatsManager;import android.app.usage.UsageStatsManager;
+import android.app.yfd.HandWriteManager;
+import android.app.yfd.IHandWriteManager;import android.appwidget.AppWidgetManager;import android.bluetooth.BluetoothManager;import android.companion.CompanionDeviceManager;
@@ -1189,6 +1191,17 @@ public final class SystemServiceRegistry {}});+ registerService(Context.HAND_WRITE_SERVICE, HandWriteManager.class,
+ new CachedServiceFetcher() {
+ @Override
+ public HandWriteManager createService(ContextImpl ctx)
+ throws ServiceNotFoundException {
+ IBinder b = ServiceManager.getServiceOrThrow(
+ Context.HAND_WRITE_SERVICE);
+ return new HandWriteManager(ctx, IHandWriteManager.Stub.asInterface(b));
+ }
+ });
+registerService(Context.SLICE_SERVICE, SliceManager.class,new CachedServiceFetcher() {@Override 在Context.java添加服务ID定义：
diff --git a/core/java/android/content/Context.java b/core/java/android/content/Context.java
index 8472144a92c..d9ee340cd55 100644
--- a/core/java/android/content/Context.java
+++ b/core/java/android/content/Context.java
@@ -5024,6 +5024,15 @@ public abstract class Context {*/public static final String CROSS_PROFILE_APPS_SERVICE = "crossprofileapps";+ /**
+ * Use with {@link #getSystemService(String)} to retrieve a
+ * {@link android.app.yfd.HandWriteManager} for handwriting
+ *
+ * @see #getSystemService(String)
+ * @see android.app.yfd.HandWriteManager
+ */
+ public static final String HAND_WRITE_SERVICE = "hand_write";
+/*** Use with {@link #getSystemService} to retrieve a* {@link android.se.omapi.ISecureElementService}此时增量编译代码，会提示api需要更新还有一个lint检测的报错，API更新执行make update-api指令，去掉lint检查需要修改framework/base/Android.bp如下：
diff --git a/Android.bp b/Android.bp
index bf6c99d0cf2..bb4a6a9a4e7 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1219,7 +1219,8 @@ metalava_framework_docs_args = "--manifest $(location core/res/AndroidManifest.x"--api-lint-ignore-prefix android.icu. " +"--api-lint-ignore-prefix java. " +"--api-lint-ignore-prefix junit. " +
- "--api-lint-ignore-prefix org. "
+ "--api-lint-ignore-prefix org. " +
+ "--api-lint-ignore-prefix android.app.yfd. "build = ["StubLibraries.bp",
在执行完make update-api之后，系统会自动更新api文件：
diff --git a/api/current.txt b/api/current.txt
index 952ccdad992..f91544dde68 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -8106,6 +8106,37 @@ package android.app.usage {}+package android.app.yfd {
+
+ public class HandWriteManager {
+ ctor public HandWriteManager(android.content.Context, android.app.yfd.IHandWriteManager);
+ method public void commitRefreshArea(int, int, int, int);
+ method public void setRefreshMode(int);
+ }
+
+ public interface IHandWriteManager extends android.os.IInterface {
+ method public void commitRefreshArea(int, int, int, int) throws android.os.RemoteException;
+ method public void setRefreshMode(int) throws android.os.RemoteException;
+ }
+
+ public static class IHandWriteManager.Default implements android.app.yfd.IHandWriteManager {
+ ctor public IHandWriteManager.Default();
+ method public android.os.IBinder asBinder();
+ method public void commitRefreshArea(int, int, int, int) throws android.os.RemoteException;
+ method public void setRefreshMode(int) throws android.os.RemoteException;
+ }
+
+ public abstract static class IHandWriteManager.Stub extends android.os.Binder implements android.app.yfd.IHandWriteManager {
+ ctor public IHandWriteManager.Stub();
+ method public android.os.IBinder asBinder();
+ method public static android.app.yfd.IHandWriteManager asInterface(android.os.IBinder);
+ method public static android.app.yfd.IHandWriteManager getDefaultImpl();
+ method public boolean onTransact(int, android.os.Parcel, android.os.Parcel, int) throws android.os.RemoteException;
+ method public static boolean setDefaultImpl(android.app.yfd.IHandWriteManager);
+ }
+
+}
+package android.appwidget {public class AppWidgetHost {
@@ -10190,6 +10221,7 @@ package android.content {field public static final String EUICC_SERVICE = "euicc";field public static final String FILE_INTEGRITY_SERVICE = "file_integrity";field public static final String FINGERPRINT_SERVICE = "fingerprint";
+ field public static final String HAND_WRITE_SERVICE = "hand_write";field public static final String HARDWARE_PROPERTIES_SERVICE = "hardware_properties";field public static final String INPUT_METHOD_SERVICE = "input_method";field public static final String INPUT_SERVICE = "input";
diff --git a/non-updatable-api/current.txt b/non-updatable-api/current.txt
index 5f15216e840..c6047ab6ff4 100644
--- a/non-updatable-api/current.txt
+++ b/non-updatable-api/current.txt
@@ -8106,6 +8106,37 @@ package android.app.usage {}+package android.app.yfd {
+
+ public class HandWriteManager {
+ ctor public HandWriteManager(android.content.Context, android.app.yfd.IHandWriteManager);
+ method public void commitRefreshArea(int, int, int, int);
+ method public void setRefreshMode(int);
+ }
+
+ public interface IHandWriteManager extends android.os.IInterface {
+ method public void commitRefreshArea(int, int, int, int) throws android.os.RemoteException;
+ method public void setRefreshMode(int) throws android.os.RemoteException;
+ }
+
+ public static class IHandWriteManager.Default implements android.app.yfd.IHandWriteManager {
+ ctor public IHandWriteManager.Default();
+ method public android.os.IBinder asBinder();
+ method public void commitRefreshArea(int, int, int, int) throws android.os.RemoteException;
+ method public void setRefreshMode(int) throws android.os.RemoteException;
+ }
+
+ public abstract static class IHandWriteManager.Stub extends android.os.Binder implements android.app.yfd.IHandWriteManager {
+ ctor public IHandWriteManager.Stub();
+ method public android.os.IBinder asBinder();
+ method public static android.app.yfd.IHandWriteManager asInterface(android.os.IBinder);
+ method public static android.app.yfd.IHandWriteManager getDefaultImpl();
+ method public boolean onTransact(int, android.os.Parcel, android.os.Parcel, int) throws android.os.RemoteException;
+ method public static boolean setDefaultImpl(android.app.yfd.IHandWriteManager);
+ }
+
+}
+package android.appwidget {public class AppWidgetHost {
@@ -10190,6 +10221,7 @@ package android.content {field public static final String EUICC_SERVICE = "euicc";field public static final String FILE_INTEGRITY_SERVICE = "file_integrity";field public static final String FINGERPRINT_SERVICE = "fingerprint";
+ field public static final String HAND_WRITE_SERVICE = "hand_write";field public static final String HARDWARE_PROPERTIES_SERVICE = "hardware_properties";field public static final String INPUT_METHOD_SERVICE = "input_method";field public static final String INPUT_SERVICE = "input";
接着添加服务的jni层：
frameworks/base/services/core/jni添加com_android_server_HandWriteManagerService.cpp
/*************************************************************************> File Name: com_android_server_HandWriteManagerService.cpp> Author: kongbo> Mail: kaka@gmail.com > Created Time: 2022年11月23日 星期三 14时56分34秒************************************************************************/#define LOG_TAG "HandWrite_JNI"
#include "jni.h"
#include "core_jni_helpers.h"
#include
#include
#include
#include #include #include
#include
#include #include namespace android {/*
struct hello_device* hello_device = NULL;static inline int hello_device_open(const hw_module_t* module, struct hello_device** device) {return module->methods->open(module, HELLO_HARDWARE_MODULE_ID, (struct hw_device_t**)device);}*/static sp service;static String16 ifName; static String16 get_interface_name(sp service) {if (service != nullptr) {Parcel data, reply;status_t err = service->transact(IBinder::INTERFACE_TRANSACTION, data, &reply);if (err == NO_ERROR) {return reply.readString16();}}return String16();
}static void HandWriteServiceNative_Init(JNIEnv* env, jobject) {
/* ALOGE("com_android_server_HelloService HelloServiceInit");const hw_module_t *hw_module = NULL;ALOGE("Hello JNI: initializing......");if(hw_get_module(HELLO_HARDWARE_MODULE_ID, &hw_module) == 0) {ALOGE("Hello JNI: hello Stub found.");if(hello_device_open(hw_module, &hello_device) == 0) {ALOGE("Hello JNI: hello device is open.");return 0;}ALOGE("Hello JNI: failed to open hello device.");return -1;}ALOGE("Hello JNI: failed to get hello stub hw_module.");
*/ALOGE("====== HandWriteServiceNative_Init JNI: initializing......");ALOGE("====== HandWriteServiceNative_Init JNI: 000000......");sp sm = defaultServiceManager();ALOGE("====== HandWriteServiceNative_Init JNI: 111111......");service = sm->checkService(String16("SurfaceFlinger"));ALOGE("====== HandWriteServiceNative_Init JNI: 222222......");ifName = get_interface_name(service); ALOGE("====== HandWriteServiceNative_Init JNI: 333333......");if (service != nullptr && ifName.size() > 0) {Parcel data1, data2, reply;ALOGE("====== HandWriteServiceNative_Init JNI: data init");// the interface name is firstdata1.writeInterfaceToken(ifName); int32_t code = atoi("20006");data1.writeInt32(atoi("2"));ALOGE("====== HandWriteServiceNative_Init JNI: 6666666......");service->transact(code, data1, &reply);data2.writeInterfaceToken(ifName); int32_t code1 = atoi("20007");data2.writeInt32(atoi("100"));data2.writeInt32(atoi("100"));data2.writeInt32(atoi("100"));data2.writeInt32(atoi("100"));ALOGE("====== HandWriteServiceNative_Init JNI: 77777777......");service->transact(code1, data2, &reply);}//Runtime.getRuntime().exec("vndservice call display.qservice 47 i32 2");/*bool supported = SurfaceComposerClient::getProtectedContentSupport();if (supported) {ALOGE("====== HandWriteServiceNative_Init getProtectedContentSupport: true");} else {ALOGE("====== HandWriteServiceNative_Init getProtectedContentSupport: false");}*/ALOGE("====== HandWriteServiceNative_Init already write cmd to hwc service");
}static void HandWriteServiceNative_setRefreshMode(JNIEnv* env, jobject clazz, jint nativeValue) {
/* ALOGE("com_android_server_HelloService HelloServiceNativeSetVal");if(!hello_device) {ALOGI("Hello JNI: hello_device is not open.");return;}const char* local_value = (nativeValue) ? env->GetStringUTFChars(nativeValue, NULL) : NULL;ALOGE("com_android_server_HelloService HelloServiceNativeSetVal local_value = %s",local_value);hello_device->write_string(hello_device, local_value);ALOGI("Hello JNI: write string %s to Hello hello_device.", local_value);env->ReleaseStringUTFChars(nativeValue, local_value);
*/if (service != nullptr && ifName.size() > 0) {Parcel data, reply;// the interface name is firstdata.writeInterfaceToken(ifName); int32_t code = atoi("20006");data.writeInt32(atoi("2"));ALOGE("====== HandWriteServiceNative_Init JNI: 6666666......");service->transact(code, data, &reply);}}static void HandWriteServiceNative_commitRefreshArea(JNIEnv* env, jobject clazz, jint x, jint y, jint h, jint w) {if (service != nullptr && ifName.size() > 0) {Parcel data, reply;// the interface name is firstdata.writeInterfaceToken(ifName); ALOGE("====== HandWriteServiceNative_Init JNI: 6666666......");int32_t code = atoi("20007");data.writeInt32(atoi("100"));data.writeInt32(atoi("100"));data.writeInt32(atoi("100"));data.writeInt32(atoi("100"));service->transact(code, data, &reply);}}
static const JNINativeMethod methods[] = {
// {"HelloServiceInit", "()I", (void*) HelloServiceInit},{"HandWriteServiceNative_Init", "()V",(void*) HandWriteServiceNative_Init},{"HandWriteServiceNative_setRefreshMode", "(I)V",(void*) HandWriteServiceNative_setRefreshMode},{"HandWriteServiceNative_commitRefreshArea", "(IIII)V",(void*) HandWriteServiceNative_commitRefreshArea},
};int register_android_server_HandWriteService(JNIEnv *env) {return jniRegisterNativeMethods(env, "com/android/server/HandWriteManagerService", methods, NELEM(methods));
}}
将该文件添加到jni的makefile：
diff --git a/services/core/jni/Android.bp b/services/core/jni/Android.bp
index 88fa8f7d597..72d5eaf8e18 100644
--- a/services/core/jni/Android.bp
+++ b/services/core/jni/Android.bp
@@ -60,6 +60,7 @@ cc_library_static {"com_android_server_am_LowMemDetector.cpp","com_android_server_pm_PackageManagerShellCommandDataLoader.cpp","com_android_server_activityTriggerService.cpp",
+ "com_android_server_HandWriteManagerService.cpp","onload.cpp",":lib_networkStatsFactory_native",],
在onload类添加jni method注册：
diff --git a/services/core/jni/onload.cpp b/services/core/jni/onload.cpp
index ec104ec8666..5b5855bffe9 100644
--- a/services/core/jni/onload.cpp
+++ b/services/core/jni/onload.cpp
@@ -53,6 +53,7 @@ int register_android_server_SyntheticPasswordManager(JNIEnv* env);int register_android_hardware_display_DisplayViewport(JNIEnv* env);int register_android_server_net_NetworkStatsFactory(JNIEnv* env);int register_android_server_net_NetworkStatsService(JNIEnv* env);
+int register_android_server_HandWriteService(JNIEnv *env);int register_android_server_security_VerityUtils(JNIEnv* env);int register_android_server_am_CachedAppOptimizer(JNIEnv* env);int register_android_server_am_LowMemDetector(JNIEnv* env);
@@ -111,6 +112,7 @@ extern "C" jint JNI_OnLoad(JavaVM* vm, void* /* reserved */)register_android_hardware_display_DisplayViewport(env);register_android_server_net_NetworkStatsFactory(env);register_android_server_net_NetworkStatsService(env);
+ register_android_server_HandWriteService(env);register_android_server_security_VerityUtils(env);register_android_server_am_CachedAppOptimizer(env);register_android_server_am_LowMemDetector(env);
至此，前半部分需求开发完成～～～
下面展开第二部分需求：
因为需求部分是想调用display相关的服务，很容易联想到Framework层的SF是跟显示系统的HW打交道的，而自定义的服务是可以直接跟SF交互的，因此就打算给SF扩展接口来实现，具体改动如下，集中在framework/native目录：
diff --git a/libs/gui/ISurfaceComposer.cpp b/libs/gui/ISurfaceComposer.cpp
index e62a61fc5..a1edb0f78 100644
--- a/libs/gui/ISurfaceComposer.cpp
+++ b/libs/gui/ISurfaceComposer.cpp
@@ -540,6 +540,71 @@ public:return reply.readBool(outSupport);}+ virtual void setPanelRefreshMode(const sp& display, int32_t mode) {
+ Parcel data, reply;
+ status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+ if (result != NO_ERROR) {
+ ALOGE("setPanelRefreshMode failed to writeInterfaceToken: %d", result);
+ return;
+ }
+
+ result = data.writeStrongBinder(display);
+ if (result != NO_ERROR) {
+ ALOGE("setPanelRefreshMode failed to writeStrongBinder: %d", result);
+ return;
+ }
+ result = data.writeInt32(mode);
+ if (result != NO_ERROR) {
+ ALOGE("setPanelRefreshMode failed to writeInt32: %d", result);
+ return;
+ }
+ result = remote()->transact(BnSurfaceComposer::SET_PANEL_REFRESH_MODE, data, &reply);
+ if (result != NO_ERROR) {
+ ALOGE("setPanelRefreshMode failed to transact: %d", result);
+ return;
+ }
+ }
+
+ virtual void commitRefreshArea(const sp& display, int32_t x, int32_t y, int32_t h, int32_t w) {
+ Parcel data, reply;
+ status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+ if (result != NO_ERROR) {
+ ALOGE("commitRefreshArea failed to writeInterfaceToken: %d", result);
+ return;
+ }
+
+ result = data.writeStrongBinder(display);
+ if (result != NO_ERROR) {
+ ALOGE("commitRefreshArea failed to writeStrongBinder: %d", result);
+ return;
+ }
+ result = data.writeInt32(x);
+ if (result != NO_ERROR) {
+ ALOGE("commitRefreshArea failed to writeInt32: %d", result);
+ return;
+ }
+ result = data.writeInt32(y);
+ if (result != NO_ERROR) {
+ ALOGE("commitRefreshArea failed to writeInt32: %d", result);
+ return;
+ }
+ result = data.writeInt32(h);
+ if (result != NO_ERROR) {
+ ALOGE("commitRefreshArea failed to writeInt32: %d", result);
+ return;
+ }
+ result = data.writeInt32(w);
+ if (result != NO_ERROR) {
+ ALOGE("commitRefreshArea failed to writeInt32: %d", result);
+ return;
+ }
+ result = remote()->transact(BnSurfaceComposer::COMMIT_REFRESH_AREA, data, &reply);
+ if (result != NO_ERROR) {
+ ALOGE("commitRefreshArea failed to transact: %d", result);
+ return;
+ }
+ }
+virtual void setAutoLowLatencyMode(const sp& display, bool on) {Parcel data, reply;status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
@@ -1568,6 +1633,57 @@ status_t BnSurfaceComposer::onTransact(return result;}+ case SET_PANEL_REFRESH_MODE: {
+ CHECK_INTERFACE(ISurfaceComposer, data, reply);
+ sp display = nullptr;
+ status_t result = data.readStrongBinder(&display);
+ if (result != NO_ERROR) {
+ ALOGE("setPanelRefreshMode failed to readStrongBinder: %d", result);
+ return result;
+ }
+ int32_t setAllm = false;
+ result = data.readInt32(&setAllm);
+ if (result != NO_ERROR) {
+ ALOGE("setPanelRefreshMode failed to readBool: %d", result);
+ return result;
+ }
+ setPanelRefreshMode(display, setAllm);
+ return result;
+ }
+
+ case COMMIT_REFRESH_AREA: {
+ CHECK_INTERFACE(ISurfaceComposer, data, reply);
+ sp display = nullptr;
+ status_t result = data.readStrongBinder(&display);
+ if (result != NO_ERROR) {
+ ALOGE("setPanelRefreshMode failed to readStrongBinder: %d", result);
+ return result;
+ }
+ int32_t x, y ,h, w = 0;
+ result = data.readInt32(&x);
+ if (result != NO_ERROR) {
+ ALOGE("setPanelRefreshMode failed to readBool: %d", result);
+ return result;
+ }
+ result = data.readInt32(&y);
+ if (result != NO_ERROR) {
+ ALOGE("setPanelRefreshMode failed to readBool: %d", result);
+ return result;
+ }
+ result = data.readInt32(&h);
+ if (result != NO_ERROR) {
+ ALOGE("setPanelRefreshMode failed to readBool: %d", result);
+ return result;
+ }
+ result = data.readInt32(&w);
+ if (result != NO_ERROR) {
+ ALOGE("setPanelRefreshMode failed to readBool: %d", result);
+ return result;
+ }
+ commitRefreshArea(display, x, y, h, w);
+ return result;
+ }
+case SET_AUTO_LOW_LATENCY_MODE: {CHECK_INTERFACE(ISurfaceComposer, data, reply);sp display = nullptr;
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 83bc06997..3dd441e7c 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -1792,6 +1792,14 @@ bool SurfaceComposerClient::getAutoLowLatencyModeSupport(const sp& dispreturn supported;}+void SurfaceComposerClient::setPanelRefreshMode(const sp& display, int32_t mode) {
+ ComposerService::getComposerService()->setPanelRefreshMode(display, mode);
+}
+
+void SurfaceComposerClient::commitRefreshArea(const sp& display, int32_t x, int32_t y, int32_t h, int32_t w) {
+ ComposerService::getComposerService()->commitRefreshArea(display, x, y, h, w);
+}
+void SurfaceComposerClient::setAutoLowLatencyMode(const sp& display, bool on) {ComposerService::getComposerService()->setAutoLowLatencyMode(display, on);}
diff --git a/libs/gui/include/gui/ISurfaceComposer.h b/libs/gui/include/gui/ISurfaceComposer.h
index 8d3160a81..913e334bc 100644
--- a/libs/gui/include/gui/ISurfaceComposer.h
+++ b/libs/gui/include/gui/ISurfaceComposer.h
@@ -228,6 +228,10 @@ public:*/virtual void setAutoLowLatencyMode(const sp& display, bool on) = 0;+ virtual void setPanelRefreshMode(const sp& displayToken, int32_t mode) = 0;
+
+ virtual void commitRefreshArea(const sp& displayToken, int32_t x, int32_t y, int32_t h, int32_t w) = 0;
+/*** Returns true if the connected display reports support for Game Content Type.* For more information, see the HDMI 1.4 specification.
@@ -599,6 +603,8 @@ public:SET_GAME_CONTENT_TYPE,SET_FRAME_RATE,ACQUIRE_FRAME_RATE_FLEXIBILITY_TOKEN,
+ SET_PANEL_REFRESH_MODE,
+ COMMIT_REFRESH_AREA,// Always append new enum to the end.};diff --git a/libs/gui/include/gui/SurfaceComposerClient.h b/libs/gui/include/gui/SurfaceComposerClient.h
index adcb8982a..89f1c3540 100644
--- a/libs/gui/include/gui/SurfaceComposerClient.h
+++ b/libs/gui/include/gui/SurfaceComposerClient.h
@@ -155,6 +155,10 @@ public:// #getAutoLowLatencyModeSupportstatic void setAutoLowLatencyMode(const sp& display, bool on);+ static void setPanelRefreshMode(const sp& displayToken, int32_t mode);
+
+ static void commitRefreshArea(const sp& displayToken, int32_t x, int32_t y, int32_t h, int32_t w);
+// Reports whether the connected display supports Game content typestatic bool getGameContentTypeSupport(const sp& display);diff --git a/services/surfaceflinger/DisplayHardware/ComposerHal.cpp b/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
index 805050de2..9990ee385 100644
--- a/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
+++ b/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
@@ -1366,6 +1366,24 @@ V2_4::Error Composer::setAutoLowLatencyMode(Display display, bool on) {return mClient_2_4->setAutoLowLatencyMode(display, on);}+V2_4::Error Composer::setPanelRefreshMode(Display display, int32_t mode) {
+ using Error = V2_4::Error;
+ if (!mClient_2_4) {
+ return Error::UNSUPPORTED;
+ }
+
+ return mClient_2_4->setPanelRefreshMode(display, mode);
+}
+
+V2_4::Error Composer::commitRefreshArea(Display display, int32_t x, int32_t y, int32_t h, int32_t w) {
+ using Error = V2_4::Error;
+ if (!mClient_2_4) {
+ return Error::UNSUPPORTED;
+ }
+
+ return mClient_2_4->commitRefreshArea(display, x, y, h, w);
+}
+V2_4::Error Composer::getSupportedContentTypes(Display displayId, std::vector* outSupportedContentTypes) {using Error = V2_4::Error;
diff --git a/services/surfaceflinger/DisplayHardware/ComposerHal.h b/services/surfaceflinger/DisplayHardware/ComposerHal.h
index 5408d5515..06cc105fa 100644
--- a/services/surfaceflinger/DisplayHardware/ComposerHal.h
+++ b/services/surfaceflinger/DisplayHardware/ComposerHal.h
@@ -231,6 +231,8 @@ public:VsyncPeriodChangeTimeline* outTimeline) = 0;virtual V2_4::Error setAutoLowLatencyMode(Display displayId, bool on) = 0;
+ virtual V2_4::Error setPanelRefreshMode(Display displayId, int32_t mode) = 0;
+ virtual V2_4::Error commitRefreshArea(Display displayId, int32_t x, int32_t y, int32_t h, int32_t w) = 0;virtual V2_4::Error getSupportedContentTypes(Display displayId,std::vector* outSupportedContentTypes) = 0;
@@ -480,6 +482,8 @@ public:const IComposerClient::VsyncPeriodChangeConstraints& vsyncPeriodChangeConstraints,VsyncPeriodChangeTimeline* outTimeline) override;V2_4::Error setAutoLowLatencyMode(Display displayId, bool on) override;
+ V2_4::Error setPanelRefreshMode(Display displayId, int32_t mode) override;
+ V2_4::Error commitRefreshArea(Display displayId, int32_t x, int32_t y, int32_t h, int32_t w) override;V2_4::Error getSupportedContentTypes(Display displayId,std::vector* outSupportedContentTypes) override;
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.cpp b/services/surfaceflinger/DisplayHardware/HWC2.cpp
index 940437f18..745d2c464 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWC2.cpp
@@ -659,6 +659,16 @@ std::future Display::setDisplayBrightness(float brightness) {});}+Error Display::setPanelRefreshMode(int32_t mode) {
+ const auto intError = mComposer.setPanelRefreshMode(mId, mode);
+ return static_cast(intError);
+}
+
+Error Display::commitRefreshArea(int32_t x, int32_t y, int32_t h, int32_t w) {
+ const auto intError = mComposer.commitRefreshArea(mId, x, y, h, w);
+ return static_cast(intError);
+}
+Error Display::setAutoLowLatencyMode(bool on) {auto intError = mComposer.setAutoLowLatencyMode(mId, on);return static_cast(intError);
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.h b/services/surfaceflinger/DisplayHardware/HWC2.h
index 469baf736..d76886f67 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.h
+++ b/services/surfaceflinger/DisplayHardware/HWC2.h
@@ -231,6 +231,8 @@ public:const hal::VsyncPeriodChangeConstraints& constraints,hal::VsyncPeriodChangeTimeline* outTimeline) = 0;[[clang::warn_unused_result]] virtual hal::Error setAutoLowLatencyMode(bool on) = 0;
+ [[clang::warn_unused_result]] virtual hal::Error setPanelRefreshMode(int32_t mode) = 0;
+ [[clang::warn_unused_result]] virtual hal::Error commitRefreshArea(int32_t x, int32_t y, int32_t h, int32_t w) = 0;[[clang::warn_unused_result]] virtual hal::Error getSupportedContentTypes(std::vector*) const = 0;[[clang::warn_unused_result]] virtual hal::Error setContentType(hal::ContentType) = 0;
@@ -305,6 +307,8 @@ public:const hal::VsyncPeriodChangeConstraints& constraints,hal::VsyncPeriodChangeTimeline* outTimeline) override;hal::Error setAutoLowLatencyMode(bool on) override;
+ hal::Error setPanelRefreshMode(int32_t mode) override;
+ hal::Error commitRefreshArea(int32_t x, int32_t y, int32_t h, int32_t w) override;hal::Error getSupportedContentTypes(std::vector* outSupportedContentTypes) const override;hal::Error setContentType(hal::ContentType) override;
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index 910f99dc5..6832ad8ab 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -833,6 +833,32 @@ status_t HWComposer::setAutoLowLatencyMode(DisplayId displayId, bool on) {return NO_ERROR;}+status_t HWComposer::setPanelRefreshMode(DisplayId displayId, int32_t mode) {
+ RETURN_IF_INVALID_DISPLAY(displayId, BAD_INDEX);
+ const auto error = mDisplayData[displayId].hwcDisplay->setPanelRefreshMode(mode);
+ if (error == hal::Error::UNSUPPORTED) {
+ RETURN_IF_HWC_ERROR(error, displayId, INVALID_OPERATION);
+ }
+ if (error == hal::Error::BAD_PARAMETER) {
+ RETURN_IF_HWC_ERROR(error, displayId, BAD_VALUE);
+ }
+ RETURN_IF_HWC_ERROR(error, displayId, UNKNOWN_ERROR);
+ return NO_ERROR;
+}
+
+status_t HWComposer::commitRefreshArea(DisplayId displayId, int32_t x, int32_t y, int32_t h, int32_t w) {
+ RETURN_IF_INVALID_DISPLAY(displayId, BAD_INDEX);
+ const auto error = mDisplayData[displayId].hwcDisplay->commitRefreshArea(x, y, h, w);
+ if (error == hal::Error::UNSUPPORTED) {
+ RETURN_IF_HWC_ERROR(error, displayId, INVALID_OPERATION);
+ }
+ if (error == hal::Error::BAD_PARAMETER) {
+ RETURN_IF_HWC_ERROR(error, displayId, BAD_VALUE);
+ }
+ RETURN_IF_HWC_ERROR(error, displayId, UNKNOWN_ERROR);
+ return NO_ERROR;
+}
+status_t HWComposer::getSupportedContentTypes(DisplayId displayId, std::vector* outSupportedContentTypes) {RETURN_IF_INVALID_DISPLAY(displayId, BAD_INDEX);
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
index eb90ab2e2..77a564d71 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -206,6 +206,9 @@ public:const hal::VsyncPeriodChangeConstraints& constraints,hal::VsyncPeriodChangeTimeline* outTimeline) = 0;virtual status_t setAutoLowLatencyMode(DisplayId displayId, bool on) = 0;
+ // Sets T1000 refresh mode..
+ virtual status_t setPanelRefreshMode(DisplayId displayId, int32_t mode) = 0;
+ virtual status_t commitRefreshArea(DisplayId displayId, int32_t x, int32_t y, int32_t h, int32_t w) = 0;virtual status_t getSupportedContentTypes(DisplayId displayId, std::vector* outSupportedContentTypes) = 0;virtual status_t setContentType(DisplayId displayId, hal::ContentType contentType) = 0;
@@ -311,7 +314,7 @@ public:DisplayedFrameStats* outStats) override;std::future setDisplayBrightness(DisplayId displayId, float brightness) override;- // Events handling ---------------------------------------------------------
+ // Events handling ---------------------------------------------------------// Returns stable display ID (and display name on connection of new or previously disconnected// display), or std::nullopt if hotplug event was ignored.
@@ -348,6 +351,8 @@ public:const hal::VsyncPeriodChangeConstraints& constraints,hal::VsyncPeriodChangeTimeline* outTimeline) override;status_t setAutoLowLatencyMode(DisplayId displayId, bool) override;
+ status_t setPanelRefreshMode(DisplayId displayId, int32_t mode) override;
+ status_t commitRefreshArea(DisplayId displayId, int32_t x, int32_t y, int32_t h, int32_t w) override;status_t getSupportedContentTypes(DisplayId displayId, std::vector*) override;status_t setContentType(DisplayId displayId, hal::ContentType) override;diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 0d07abb1d..017caae08 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -1562,6 +1562,26 @@ void SurfaceFlinger::setAutoLowLatencyMode(const sp& displayToken, bool}));}+void SurfaceFlinger::setPanelRefreshMode(const sp& displayToken, int32_t mode) {
+ static_cast(schedule([=]() MAIN_THREAD {
+ if (const auto displayId = getPhysicalDisplayIdLocked(displayToken)) {
+ getHwComposer().setPanelRefreshMode(*displayId, mode);
+ } else {
+ ALOGE("%s: Invalid display token %p", __FUNCTION__, displayToken.get());
+ }
+ }));
+}
+
+void SurfaceFlinger::commitRefreshArea(const sp& displayToken, int32_t x, int32_t y, int32_t h, int32_t w) {
+ static_cast(schedule([=]() MAIN_THREAD {
+ if (const auto displayId = getPhysicalDisplayIdLocked(displayToken)) {
+ getHwComposer().commitRefreshArea(*displayId, x, y, h, w);
+ } else {
+ ALOGE("%s: Invalid display token %p", __FUNCTION__, displayToken.get());
+ }
+ }));
+}
+status_t SurfaceFlinger::getGameContentTypeSupport(const sp& displayToken,bool* outSupport) const {if (!displayToken) {
@@ -5949,6 +5969,8 @@ status_t SurfaceFlinger::CheckTransactCodeCredentials(uint32_t code) {case SET_ACTIVE_COLOR_MODE:case GET_AUTO_LOW_LATENCY_MODE_SUPPORT:case SET_AUTO_LOW_LATENCY_MODE:
+ case SET_PANEL_REFRESH_MODE:
+ case COMMIT_REFRESH_AREA:case GET_GAME_CONTENT_TYPE_SUPPORT:case SET_GAME_CONTENT_TYPE:case INJECT_VSYNC:
@@ -6045,9 +6067,9 @@ status_t SurfaceFlinger::CheckTransactCodeCredentials(uint32_t code) {code == IBinder::SYSPROPS_TRANSACTION) {return OK;}
- // Numbers from 1000 to 1036 and 20000 to 20002 are currently used for backdoors. The code
+ // Numbers from 1000 to 1036 and 20000 to 20007 are currently used for backdoors. The code// in onTransact verifies that the user is root, and has access to use SF.
- if ((code >= 1000 && code <= 1036) || (code >= 20000 && code <= 20002)) {
+ if ((code >= 1000 && code <= 1036) || (code >= 20000 && code <= 20007)) {ALOGV("Accessing SurfaceFlinger through backdoor code: %u", code);return OK;}
@@ -6549,6 +6571,35 @@ status_t SurfaceFlinger::onTransact(uint32_t code, const Parcel& data, Parcel* r#endifreturn NO_ERROR;}
+ case 20006: {
+ int32_t mode = 0;
+ Mutex::Autolock lock(mStateLock);
+ const auto displayId = getInternalDisplayIdLocked();
+ if (data.readInt32(&mode) != NO_ERROR) {
+ err = BAD_TYPE;
+ ALOGE("Invalid 32-bit signed-int wider-mode t1000 fresh mode.");
+ break;
+ }
+
+ ALOGE("====== SF get T1000 fresh mode value: %d, will set to hw layer.", mode);
+ getHwComposer().setPanelRefreshMode(*displayId, mode);
+
+ return NO_ERROR;
+ }
+ case 20007: {
+ int32_t x, y, h, w = 0;
+ Mutex::Autolock lock(mStateLock);
+ const auto displayId = getInternalDisplayIdLocked();
+ x = data.readInt32();
+ y = data.readInt32();
+ h = data.readInt32();
+ w = data.readInt32();
+
+ ALOGE("====== SF get T1000 fresh area value: %d,%d,%d,%d will set to hw layer.",x, y, h, w);
+ getHwComposer().commitRefreshArea(*displayId, x, y, h, w);
+
+ return NO_ERROR;
+ }}}return err;
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 6c7fb3419..4499a7e2e 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -532,6 +532,8 @@ private:status_t getAutoLowLatencyModeSupport(const sp& displayToken,bool* outSupported) const override;void setAutoLowLatencyMode(const sp& displayToken, bool on) override;
+ void setPanelRefreshMode(const sp& displayToken, int32_t mode) override;
+ void commitRefreshArea(const sp& displayToken, int32_t x, int32_t y, int32_t h, int32_t w) override;status_t getGameContentTypeSupport(const sp& displayToken,bool* outSupported) const override;void setGameContentType(const sp& displayToken, bool on) override; 以上只是sf native层面的扩展，还需要通过HIDL接口扩展到HW，从而实现通信，首先实现interface定义扩展：
diff --git a/graphics/composer/2.4/IComposerClient.hal b/graphics/composer/2.4/IComposerClient.hal
index 9e3cf0e08..72d6d7d60 100644
--- a/graphics/composer/2.4/IComposerClient.hal
+++ b/graphics/composer/2.4/IComposerClient.hal
@@ -279,6 +279,34 @@ interface IComposerClient extends @2.3::IComposerClient {setAutoLowLatencyMode(Display display, bool on)generates (Error error);+ /**
+ * Set the display refresh mode.
+ *
+ * If the display is connected via HDMI 2.1, then Auto Low Latency Mode should be triggered. If
+ * the display is internally connected and a custom low latency mode is available, that should
+ * be triggered.
+ *
+ * This function should only be called if the display reports support for
+ *
+ * @return error is NONE upon success. Otherwise,
+ */
+ setPanelRefreshMode(Display display, int32_t mode)
+ generates (Error error);
+
+ /**
+ * Set the refresh area.
+ *
+ * If the display is connected via HDMI 2.1, then Auto Low Latency Mode should be triggered. If
+ * the display is internally connected and a custom low latency mode is available, that should
+ * be triggered.
+ *
+ * This function should only be called if the display reports support for
+ *
+ * @return error is NONE upon success. Otherwise,
+ */
+ commitRefreshArea(Display display, int32_t x, int32_t y, int32_t h, int32_t w)
+ generates (Error error);
+/*** Provides a list of all the content types supported by this display (any of* ContentType::{GRAPHICS, PHOTO, CINEMA, GAME}). This list must not change after
diff --git a/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerClient.h b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerClient.h
index c88906914..b9ac48a03 100644
--- a/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerClient.h
+++ b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerClient.h
@@ -150,6 +150,14 @@ class ComposerClientImpl : public V2_3::hal::detail::ComposerClientImplsetAutoLowLatencyMode(display, on);}+ Return setPanelRefreshMode(Display display, int32_t mode) override {
+ return mHal->setPanelRefreshMode(display, mode);
+ }
+
+ Return commitRefreshArea(Display display, int32_t x, int32_t y, int32_t h, int32_t w) override {
+ return mHal->commitRefreshArea(display, x, y, h, w);
+ }
+Return getSupportedContentTypes(Display display, IComposerClient::getSupportedContentTypes_cb hidl_cb) override {std::vector supportedContentTypes;
diff --git a/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerHal.h b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerHal.h
index 58991c1d8..390d7f05d 100644
--- a/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerHal.h
+++ b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerHal.h
@@ -69,6 +69,8 @@ class ComposerHal : public V2_3::hal::ComposerHal {const IComposerClient::VsyncPeriodChangeConstraints& vsyncPeriodChangeConstraints,VsyncPeriodChangeTimeline* timeline) = 0;virtual Error setAutoLowLatencyMode(Display display, bool on) = 0;
+ virtual Error setPanelRefreshMode(Display display, int32_t mode) = 0;
+ virtual Error commitRefreshArea(Display display, int32_t x, int32_t y, int32_t h, int32_t w) = 0;virtual Error getSupportedContentTypes(Display display,std::vector* outSupportedContentTypes) = 0;
diff --git a/graphics/composer/2.4/utils/passthrough/include/composer-passthrough/2.4/HwcHal.h b/graphics/composer/2.4/utils/passthrough/include/composer-passthrough/2.4/HwcHal.h
index d28e00625..5eac92438 100644
--- a/graphics/composer/2.4/utils/passthrough/include/composer-passthrough/2.4/HwcHal.h
+++ b/graphics/composer/2.4/utils/passthrough/include/composer-passthrough/2.4/HwcHal.h
@@ -180,6 +180,30 @@ class HwcHalImpl : public V2_3::passthrough::detail::HwcHalImpl {return Error::NONE;}+ Error setPanelRefreshMode(Display display, int32_t mode) override {
+ if (!mDispatch.setPanelRefreshMode) {
+ return Error::UNSUPPORTED;
+ }
+
+ int32_t error = mDispatch.setPanelRefreshMode(mDevice, display, mode);
+ if (error != HWC2_ERROR_NONE) {
+ return static_cast(error);
+ }
+ return Error::NONE;
+ }
+
+ Error commitRefreshArea(Display display, int32_t x, int32_t y, int32_t h, int32_t w) override {
+ if (!mDispatch.commitRefreshArea) {
+ return Error::UNSUPPORTED;
+ }
+
+ int32_t error = mDispatch.commitRefreshArea(mDevice, display, x, y, h, w);
+ if (error != HWC2_ERROR_NONE) {
+ return static_cast(error);
+ }
+ return Error::NONE;
+ }
+Error getSupportedContentTypes(Display display,std::vector* outSupportedContentTypes) override {
@@ -317,6 +341,10 @@ class HwcHalImpl : public V2_3::passthrough::detail::HwcHalImpl {&mDispatch.getDisplayConnectionType);this->initOptionalDispatch(HWC2_FUNCTION_SET_AUTO_LOW_LATENCY_MODE,&mDispatch.setAutoLowLatencyMode);
+ this->initOptionalDispatch(HWC2_FUNCTION_SET_PANEL_REFRESH_MODE,
+ &mDispatch.setPanelRefreshMode);
+ this->initOptionalDispatch(HWC2_FUNCTION_COMMIT_REFRESH_AREA,
+ &mDispatch.commitRefreshArea);this->initOptionalDispatch(HWC2_FUNCTION_GET_SUPPORTED_CONTENT_TYPES,&mDispatch.getSupportedContentTypes);this->initOptionalDispatch(HWC2_FUNCTION_SET_CONTENT_TYPE, &mDispatch.setContentType);
@@ -376,6 +404,8 @@ class HwcHalImpl : public V2_3::passthrough::detail::HwcHalImpl {HWC2_PFN_GET_DISPLAY_VSYNC_PERIOD getDisplayVsyncPeriod;HWC2_PFN_SET_ACTIVE_CONFIG_WITH_CONSTRAINTS setActiveConfigWithConstraints;HWC2_PFN_SET_AUTO_LOW_LATENCY_MODE setAutoLowLatencyMode;
+ HWC2_PFN_SET_PANEL_REFRESH_MODE setPanelRefreshMode;
+ HWC2_PFN_COMMIT_REFRESH_AREA commitRefreshArea;HWC2_PFN_GET_SUPPORTED_CONTENT_TYPES getSupportedContentTypes;HWC2_PFN_SET_CONTENT_TYPE setContentType;HWC2_PFN_GET_CLIENT_TARGET_PROPERTY getClientTargetProperty;
这个时候做一次增量编译，会提示如下两个编译错误，按如下方式修改解决：
修改如上几个地方后，编译报错
错误一、which does not match hash on record. This interface has been frozen. Do not change it!ERROR: output handler failed.
HIDL c++-sources: hardware/interfaces/light/2.0/types.hal hardware/interfaces/light/2.0/ILight.hal hardware/interfaces/current.txt => 'out/soong/.intermediates/hardware/interfaces/light/2.0/android.hardware.light@2.0_genc++/gen/android/hardware/light/2.0/LightAll.cpp'
FAILED: out/soong/.intermediates/hardware/interfaces/light/2.0/android.hardware.light@2.0_genc++/gen/android/hardware/light/2.0/LightAll.cpp out/soong/.intermediates/hardware/interfaces/light/2.0/android.hardware.light@2.0_genc++/gen/android/hardware/light/2.0/types.cpp
rm -rf out/soong/.intermediates/hardware/interfaces/light/2.0/android.hardware.light@2.0_genc++/gen && out/soong/host/linux-x86/bin/hidl-gen -R -p . -d out/soong/.intermediates/hardware/interfaces/light/2.0/android.hardware.light@2.0_genc++/gen/android/hardware/light/2.0/LightAll.cpp.d -o out/soong/.intermediates/hardware/interfaces/light/2.0/android.hardware.light@2.0_genc++/gen -L c++-sources -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.light@2.0
ERROR: android.hardware.light@2.0::types has hash cd082c47c3940f2c4d4ef489c9f34e0c737dfcbd7dd09e0e270563e699a9d91e which does not match hash on record. This interface has been frozen. Do not change it!
ERROR: Could not parse android.hardware.light@2.0::types. Aborting.
原因：Android P 开始，Google 对 Hidl 有了严格的限制。Google release 出来的 hidl 接口不允许修改。
需要重新生成修改 hardware 对应的 hashcode,错误中已经包含新的 hashcode 值 cd082c47c3940f2c4d4ef489c9f34e0c737dfcbd7dd09e0e270563e699a9d91e
如果没有此 hashcode 值，可以通过指令 hidl-gen -L hash -r 来生成,得到和错误提示中的hash值一模一样
$ hidl-gen -L hash -r android.hardware:hardware/interfaces -r android.hidl:system/libhidl/transport android.hardware.light@2.0::types
cd082c47c3940f2c4d4ef489c9f34e0c737dfcbd7dd09e0e270563e699a9d91e android.hardware.light@2.0::types将刚刚得到的新 hashcode 值更新到 hardware/interfaces/current.txt
可直接在文档末尾增加
cd082c47c3940f2c4d4ef489c9f34e0c737dfcbd7dd09e0e270563e699a9d91e android.hardware.light@2.0::types错误二、error: VNDK library: android.hardware.light@2.0’s ABI has INCOMPATIBLE CHANGES
Please check compatibility report at: out/soong/.intermediates/hardware/interfaces/light/2.0/android.hardware.light@2.0/android_arm64_armv8-a_cortex-a53_vendor_shared/android.hardware.light@2.0.so.abidiffInstall: out/target/product/full_171_bsp/system/lib64/vndk-29/android.hardware.keymaster@3.0.so
//hardware/interfaces/light/2.0:android.hardware.light@2.0 header-abi-diff android.hardware.light@2.0.so.abidiff
FAILED: out/soong/.intermediates/hardware/interfaces/light/2.0/android.hardware.light@2.0/android_arm64_armv8-a_cortex-a53_vendor_shared/android.hardware.light@2.0.so.abidiff
(prebuilts/clang-tools/linux-x86/bin/header-abi-diff -allow-unreferenced-changes -allow-unreferenced-elf-symbol-changes -lib android.hardware.light@2.0 -arch arm64 -o 'out/soong/.intermediates/hardware/interfaces/light/2.0/android.hardware.light@2.0/android_arm64_armv8-a_cortex-a53_vendor_shared/android.hardware.light@2.0.so.abidiff' -new 'out/soong/.intermediates/hardware/interfaces/light/2.0/android.hardware.light@2.0/android_arm64_armv8-a_cortex-a53_vendor_shared/android.hardware.light@2.0.so.lsdump' -old prebuilts/abi-dumps/vndk/29/64/arm64_armv8-a/source-based/android.hardware.light@2.0.so.lsdump)|| (echo 'error: Please update ABI references with: $ANDROID_BUILD_TOP/development/vndk/tools/header-checker/utils/create_reference_dumps.py -l android.hardware.light@2.0' && (mkdir -p $DIST_DIR/abidiffs && cp 'out/soong/.intermediates/hardware/interfaces/light/2.0/android.hardware.light@2.0/android_arm64_armv8-a_cortex-a53_vendor_shared/android.hardware.light@2.0.so.abidiff' $DIST_DIR/abidiffs/) && exit 1)
******************************************************
error: VNDK library: android.hardware.light@2.0's ABI has INCOMPATIBLE CHANGES Please check compatibility report at: out/soong/.intermediates/hardware/interfaces/light/2.0/android.hardware.light@2.0/android_arm64_armv8-a_cortex-a53_vendor_shared/android.hardware.light@2.0.so.abidiff
******************************************************
error: Please update ABI references with: $ANDROID_BUILD_TOP/development/vndk/tools/header-checker/utils/create_reference_dumps.py -l android.hardware.light@2.0根据提示执行指令 development/vndk/tools/header-checker/utils/create_reference_dumps.py -l android.hardware.light@2.0 ，发现报错$ development/vndk/tools/header-checker/utils/create_reference_dumps.py -l android.hardware.light@2.0
Removing reference dumps...
removing /platform/prebuilts/abi-dumps/vndk/28/32/arm_armv7-a-neon/source-based/android.hardware.gnss@1.0.so.lsdump.gz
removing /platform/prebuilts/abi-dumps/ndk/28/32/arm_armv7-a-neon/source-based/android.hardware.gnss@1.0.so.lsdump.gz
making libs for product: aosp_arm_ab
Traceback (most recent call last):File "development/vndk/tools/header-checker/utils/create_reference_dumps.py", line 224, in main()File "development/vndk/tools/header-checker/utils/create_reference_dumps.py", line 215, in mainmake_libs_for_product(args.libs, args.llndk, product)File "development/vndk/tools/header-checker/utils/create_reference_dumps.py", line 97, in make_libs_for_productmake_libraries(libs, product, llndk_mode)File "/platform/development/vndk/tools/header-checker/utils/utils.py", line 146, in make_librariesmake_targets(lib_targets, product)File "/platform/development/vndk/tools/header-checker/utils/utils.py", line 137, in make_targetsstderr=subprocess.STDOUT)File "/usr/lib/python3.5/subprocess.py", line 581, in check_callraise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['build/soong/soong_ui.bash', '--make-mode', '-j', 'android.hardware.gnss@1.0.vendor', 'TARGET_PRODUCT=aosp_arm_ab']' returned non-zero exit status 1看到 making libs for product: aosp_arm_ab 这行，这个是因为我的项目 product名字不一样导致的，加上参数-product product_name 即可，product_name 是你的项目的 product 名称。development/vndk/tools/header-checker/utils/create_reference_dumps.py -l android.hardware.light@2.0 -product full_171_bspAllowBuildBrokenUsesNetwork: trueBuildBrokenUsesNetwork: true
//hardware/interfaces/light/2.0:android.hardware.light@2.0 header-abi-linker android.hardware.light@2.0.so.lsdump [arm]
Creating dumps for target_arch: arm and variant armv8-a
Created abi dump at /prebuilts/abi-dumps/vndk/29/64/arm_armv8-a/source-based/android.hardware.light@2.0.so.lsdump
Creating dumps for target_arch: arm64 and variant armv8-a
Created abi dump at /prebuilts/abi-dumps/vndk/29/64/arm64_armv8-a/source-based/android.hardware.light@2.0.so.lsdumpmsg: Processed 2 libraries in 14.642458236217498 minutes
添加头文件定义：
diff --git a/include/hardware/hwcomposer2.h b/include/hardware/hwcomposer2.h
index 76122a57..698ae498 100644
--- a/include/hardware/hwcomposer2.h
+++ b/include/hardware/hwcomposer2.h
@@ -304,6 +304,8 @@ typedef enum {HWC2_FUNCTION_GET_DISPLAY_VSYNC_PERIOD,HWC2_FUNCTION_SET_ACTIVE_CONFIG_WITH_CONSTRAINTS,HWC2_FUNCTION_SET_AUTO_LOW_LATENCY_MODE,
+ HWC2_FUNCTION_SET_PANEL_REFRESH_MODE,
+ HWC2_FUNCTION_COMMIT_REFRESH_AREA,HWC2_FUNCTION_GET_SUPPORTED_CONTENT_TYPES,HWC2_FUNCTION_SET_CONTENT_TYPE,HWC2_FUNCTION_GET_CLIENT_TARGET_PROPERTY,
@@ -666,6 +668,8 @@ static inline const char* getFunctionDescriptorName(case HWC2_FUNCTION_GET_DISPLAY_VSYNC_PERIOD: return "GetDisplayVsyncPeriod";case HWC2_FUNCTION_SET_ACTIVE_CONFIG_WITH_CONSTRAINTS: return "SetActiveConfigWithConstraints";case HWC2_FUNCTION_SET_AUTO_LOW_LATENCY_MODE: return "SetAutoLowLatencyMode";
+ case HWC2_FUNCTION_SET_PANEL_REFRESH_MODE: return "SetPanelRefreshMode";
+ case HWC2_FUNCTION_COMMIT_REFRESH_AREA: return "CommitRefreshArea";case HWC2_FUNCTION_GET_SUPPORTED_CONTENT_TYPES: return "GetSupportedContentTypes";case HWC2_FUNCTION_SET_CONTENT_TYPE: return "SetContentType";case HWC2_FUNCTION_GET_CLIENT_TARGET_PROPERTY: return "GetClientTargetProperty";
@@ -946,6 +950,8 @@ enum class FunctionDescriptor : int32_t {GetDisplayVsyncPeriod = HWC2_FUNCTION_GET_DISPLAY_VSYNC_PERIOD,SetActiveConfigWithConstraints = HWC2_FUNCTION_SET_ACTIVE_CONFIG_WITH_CONSTRAINTS,SetAutoLowLatencyMode = HWC2_FUNCTION_SET_AUTO_LOW_LATENCY_MODE,
+ SetPanelRefreshMode = HWC2_FUNCTION_SET_PANEL_REFRESH_MODE,
+ CommitRefreshArea = HWC2_FUNCTION_COMMIT_REFRESH_AREA,GetSupportedContentTypes = HWC2_FUNCTION_GET_SUPPORTED_CONTENT_TYPES,SetContentType = HWC2_FUNCTION_SET_CONTENT_TYPE,GetClientTargetProperty = HWC2_FUNCTION_GET_CLIENT_TARGET_PROPERTY,
@@ -3004,6 +3010,36 @@ typedef int32_t /*hwc2_error_t*/ (*HWC2_PFN_SET_ACTIVE_CONFIG_WITH_CONSTRAINTS)(typedef int32_t /*hwc_error_t*/ (*HWC2_PFN_SET_AUTO_LOW_LATENCY_MODE)(hwc2_device_t* device,hwc2_display_t display, bool on);+/* setPanelRefreshMode(displayToken, mode)
+ * Descriptor: HWC2_FUNCTION_SET_PANEL_REFRESH_MODE
+ * Optional for HWC2 devices
+ *
+ * setAutoLowLatencyMode requests that the display goes into low latency mode. If the display
+ * is connected via HDMI 2.1, then Auto Low Latency Mode should be triggered. If the display is
+ * internally connected, then a custom low latency mode should be triggered (if available).
+ *
+ * Returns HWC2_ERROR_NONE or one of the following errors:
+ * HWC2_ERROR_BAD_DISPLAY - when the display is invalid, or
+ * HWC2_ERROR_UNSUPPORTED - when the display does not support any low latency mode
+ */
+typedef int32_t /*hwc_error_t*/ (*HWC2_PFN_SET_PANEL_REFRESH_MODE)(hwc2_device_t* device,
+ hwc2_display_t display, int32_t mode);
+
+/* commitRefreshArea(displayToken, x, y, h, w)
+ * Descriptor:HWC2_FUNCTION_COMMIT_REFRESH_AREA
+ * Optional for HWC2 devices
+ *
+ * setAutoLowLatencyMode requests that the display goes into low latency mode. If the display
+ * is connected via HDMI 2.1, then Auto Low Latency Mode should be triggered. If the display is
+ * internally connected, then a custom low latency mode should be triggered (if available).
+ *
+ * Returns HWC2_ERROR_NONE or one of the following errors:
+ * HWC2_ERROR_BAD_DISPLAY - when the display is invalid, or
+ * HWC2_ERROR_UNSUPPORTED - when the display does not support any low latency mode
+ */
+typedef int32_t /*hwc_error_t*/ (*HWC2_PFN_COMMIT_REFRESH_AREA)(hwc2_device_t* device,
+ hwc2_display_t display, int32_t x, int32_t y, int32_t h, int32_t w);
+/* getSupportedContentTypes(..., outSupportedContentTypes)* Descriptor: HWC2_FUNCTION_GET_SUPPORTED_CONTENT_TYPES* Optional for HWC2 devices
最后扩展hw服务的接口在android/hardware/qcom/display/sdm/libs/hwc2目录：
diff --git a/sdm/libs/hwc2/hwc_session.cpp b/sdm/libs/hwc2/hwc_session.cpp
index 21be352f..e4f2fef8 100644
--- a/sdm/libs/hwc2/hwc_session.cpp
+++ b/sdm/libs/hwc2/hwc_session.cpp
@@ -1191,6 +1191,22 @@ int32_t HWCSession::SetAutoLowLatencyMode(hwc2_device_t *device, hwc2_display_treturn HWC2_ERROR_UNSUPPORTED;}+int32_t HWCSession::SetPanelRefreshMode(hwc2_device_t *device, hwc2_display_t display, int32_t mode) {
+ DLOGE("====== HWCSession::SetPanelRefreshMode get from fw: %d .", mode);
+ if (!device || display >= HWCCallbacks::kNumDisplays) {
+ return HWC2_ERROR_BAD_DISPLAY;
+ }
+ return HWC2_ERROR_NONE;
+}
+
+int32_t HWCSession::CommitRefreshArea(hwc2_device_t *device, hwc2_display_t display, int32_t x, int32_t y, int32_t h, int32_t w) {
+ DLOGE("====== HWCSession::CommitRefreshArea get from fw: x= %d y= %d h= %d w= %d\n .", x, y, h, w);
+ if (!device || display >= HWCCallbacks::kNumDisplays) {
+ return HWC2_ERROR_BAD_DISPLAY;
+ }
+ return HWC2_ERROR_NONE;
+}
+int32_t HWCSession::GetSupportedContentTypes(hwc2_device_t *device, hwc2_display_t display,uint32_t *count, uint32_t *contentTypes) {contentTypes = {};
@@ -1382,6 +1398,10 @@ hwc2_function_pointer_t HWCSession::GetFunction(struct hwc2_device *device,(HWCSession::SetActiveConfigWithConstraints);case HWC2::FunctionDescriptor::SetAutoLowLatencyMode:return AsFP(HWCSession::SetAutoLowLatencyMode);
+ case HWC2::FunctionDescriptor::SetPanelRefreshMode:
+ return AsFP(HWCSession::SetPanelRefreshMode);
+ case HWC2::FunctionDescriptor::CommitRefreshArea:
+ return AsFP(HWCSession::CommitRefreshArea);case HWC2::FunctionDescriptor::GetSupportedContentTypes:return AsFP(HWCSession::GetSupportedContentTypes);case HWC2::FunctionDescriptor::SetContentType:
@@ -1808,6 +1828,15 @@ android::status_t HWCSession::notifyCallback(uint32_t command, const android::Pastatus = SetPanelLuminanceAttributes(input_parcel);break;+ case qService::IQService::SET_DISPLAY_REFRESH_MODE:
+ if (!input_parcel) {
+ DLOGE("QService command SET_DISPLAY_REFRESH_MODE = %d: input_parcel needed.", command);
+ break;
+ }
+ DLOGE("====== HW session rec SET_DISPLAY_REFRESH_MODE cmd");
+ //status = SetPanelLuminanceAttributes(input_parcel);
+ break;
+case qService::IQService::SET_COLOR_MODE_FROM_CLIENT:if (!input_parcel) {DLOGE("QService command = %d: input_parcel needed.", command);
diff --git a/sdm/libs/hwc2/hwc_session.h b/sdm/libs/hwc2/hwc_session.h
index 5931a5d9..c0c3bd45 100644
--- a/sdm/libs/hwc2/hwc_session.h
+++ b/sdm/libs/hwc2/hwc_session.h
@@ -233,6 +233,8 @@ class HWCSession : hwc2_device_t, HWCUEventListener, public qClient::BnQClient,static int32_t GetDozeSupport(hwc2_device_t *device, hwc2_display_t display,int32_t *out_support);static int32_t SetAutoLowLatencyMode(hwc2_device_t *device, hwc2_display_t display, bool on);
+ static int32_t SetPanelRefreshMode(hwc2_device_t *device, hwc2_display_t display, int32_t mode);
+ static int32_t CommitRefreshArea(hwc2_device_t *device, hwc2_display_t display, int32_t x, int32_t y, int32_t h, int32_t w);static int32_t GetSupportedContentTypes(hwc2_device_t *device, hwc2_display_t display,uint32_t *count, uint32_t *contentTypes);static int32_t SetContentType(hwc2_device_t *device, hwc2_display_t display,int32_t type); 刷机验证即可～～～
顺利的话会得到如下日志：
11-21 11:20:54.105 1050 1050 I SystemServerTiming: StartSystemUpdateManagerService
11-21 11:20:54.106 1050 1050 I SystemUpdateManagerService: No existing info file /data/system/system-update-info.xml
11-21 11:20:54.107 1050 1050 D SystemServerTiming: StartSystemUpdateManagerService took to complete: 2ms
11-21 11:20:54.108 1050 1050 I SystemServerTiming: StartUpdateLockService
11-21 11:20:54.109 1050 1050 D SystemServerTiming: StartUpdateLockService took to complete: 1ms
11-21 11:20:54.109 1050 1050 I SystemServerTiming: ====== StartHandWriteManagerService
11-21 11:20:54.109 1050 1050 E HandWrite_JNI: ====== HandWriteServiceNative_Init JNI: initializing......
11-21 11:20:54.110 1050 1050 E HandWrite_JNI: ====== HandWriteServiceNative_Init JNI: 000000......
11-21 11:20:54.110 1050 1050 E HandWrite_JNI: ====== HandWriteServiceNative_Init JNI: 111111......
11-21 11:20:54.110 1050 1050 E HandWrite_JNI: ====== HandWriteServiceNative_Init JNI: 222222......
11-21 11:20:54.111 1050 1050 E HandWrite_JNI: ====== HandWriteServiceNative_Init JNI: 333333......
11-21 11:20:54.111 1050 1050 E HandWrite_JNI: ====== HandWriteServiceNative_Init JNI: data init
11-21 11:20:54.111 1050 1050 E HandWrite_JNI: ====== HandWriteServiceNative_Init JNI: 6666666......
11-21 11:20:54.111 818 1400 E SurfaceFlinger: ====== SF get T1000 fresh mode value: 2, will set to hw layer.
11-21 11:20:54.112 715 715 E SDM : HWCSession::SetPanelRefreshMode: ====== HWCSession::SetPanelRefreshMode get from fw: 2 .
11-21 11:20:54.112 1050 1050 E HandWrite_JNI: ====== HandWriteServiceNative_Init JNI: 77777777......
11-21 11:20:54.113 818 1400 E SurfaceFlinger: ====== SF get T1000 fresh area value: 100,100,100,100 will set to hw layer.
11-21 11:20:54.113 715 715 E SDM : HWCSession::CommitRefreshArea: ====== HWCSession::CommitRefreshArea get from fw: x= 100 y= 100 h= 100 w= 100
11-21 11:20:54.113 715 715 E SDM : .
11-21 11:20:54.113 1050 1050 E HandWrite_JNI: ====== HandWriteServiceNative_Init already write cmd to hwc service
11-21 11:20:54.115 1050 1050 D SystemServerTiming: ====== StartHandWriteManagerService took to complete: 6ms
11-21 11:20:54.116 1050 1050 I SystemServerTiming: StartNotificationManager
11-21 11:20:54.116 1050 1050 I SystemServiceManager: Starting com.android.server.notification.NotificationManagerService
01-01 00:24:43.550 0 0 I chatty : uid=0(root) logd identical 107 lines
01-01 00:24:43.559 0 0 I bad ioctl: -1072934383
可以看到“======”标示的内容，从自定义服务开始到SF日志，到最终HW层扩展接口拿到传递的数据值证明接口通了～～～～完事大吉！！！！！！
Mark一下，本文只做数据通路走通，可参考实现自己的控制和数据传输接口！
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