SurfaceFlinger中Binder案例
- 1、SurfaceFlinger服务init启动
- 2、SurfaceFlinger服务继承BnSurfaceComposer端
- 2.1 Code标签扩展
- 2.2 Code标签扩展对应调用
- 3、SurfaceFlinger服务的BpSurfaceComposer端
- 3.1 FWK使用案例
- 3.2 Native使用案例
android12-release
1、SurfaceFlinger服务init启动
SurfaceFlinger启动-Android12
SurfaceFlinger服务添加到ServiceManager中sm->addService(String16(SurfaceFlinger::getServiceName()), flinger, ... ...)
static char const* getServiceName() ANDROID_API { return "SurfaceFlinger"; }
frameworks/native/services/surfaceflinger/main_surfaceflinger.cpp
int main(int, char**) {
// ... ... ... ...
// instantiate surfaceflinger
sp<SurfaceFlinger> flinger = surfaceflinger::createSurfaceFlinger();
// Set the minimum policy of surfaceflinger node to be SCHED_FIFO.
// So any thread with policy/priority lower than {SCHED_FIFO, 1}, will run
// at least with SCHED_FIFO policy and priority 1.
if (errorInPriorityModification == 0) {
flinger->setMinSchedulerPolicy(SCHED_FIFO, newPriority);
}
setpriority(PRIO_PROCESS, 0, PRIORITY_URGENT_DISPLAY);
set_sched_policy(0, SP_FOREGROUND);
// Put most SurfaceFlinger threads in the system-background cpuset
// Keeps us from unnecessarily using big cores
// Do this after the binder thread pool init
if (cpusets_enabled()) set_cpuset_policy(0, SP_SYSTEM);
// initialize before clients can connect
flinger->init();
// publish surface flinger
sp<IServiceManager> sm(defaultServiceManager());
sm->addService(String16(SurfaceFlinger::getServiceName()), flinger, false,
IServiceManager::DUMP_FLAG_PRIORITY_CRITICAL | IServiceManager::DUMP_FLAG_PROTO);
startDisplayService(); // dependency on SF getting registered above
if (SurfaceFlinger::setSchedFifo(true) != NO_ERROR) {
ALOGW("Couldn't set to SCHED_FIFO: %s", strerror(errno));
}
// run surface flinger in this thread
flinger->run();
return 0;
}
2、SurfaceFlinger服务继承BnSurfaceComposer端
SurfaceFlinger服务继承
BnSurfaceComposer，实现onTransact方法一边Bp客户端调用，Code标签对应调用方法，Parcel& data参数，Parcel* reply接收返回值，flags = 0存在默认值。
frameworks/native/libs/gui/include/gui/ISurfaceComposer.h
class BnSurfaceComposer: public BnInterface<ISurfaceComposer> {
public:
enum ISurfaceComposerTag {
// Note: BOOT_FINISHED must remain this value, it is called from
// Java by ActivityManagerService.
BOOT_FINISHED = IBinder::FIRST_CALL_TRANSACTION,
CREATE_CONNECTION,
GET_STATIC_DISPLAY_INFO,
CREATE_DISPLAY_EVENT_CONNECTION,
CREATE_DISPLAY,
DESTROY_DISPLAY,
GET_PHYSICAL_DISPLAY_TOKEN,
SET_TRANSACTION_STATE,
AUTHENTICATE_SURFACE,
GET_SUPPORTED_FRAME_TIMESTAMPS,
GET_DISPLAY_MODES, // Deprecated. Use GET_DYNAMIC_DISPLAY_INFO instead.
GET_ACTIVE_DISPLAY_MODE, // Deprecated. Use GET_DYNAMIC_DISPLAY_INFO instead.
GET_DISPLAY_STATE,
CAPTURE_DISPLAY,
CAPTURE_LAYERS,
CLEAR_ANIMATION_FRAME_STATS,
GET_ANIMATION_FRAME_STATS,
SET_POWER_MODE,
GET_DISPLAY_STATS,
GET_HDR_CAPABILITIES, // Deprecated. Use GET_DYNAMIC_DISPLAY_INFO instead.
GET_DISPLAY_COLOR_MODES, // Deprecated. Use GET_DYNAMIC_DISPLAY_INFO instead.
GET_ACTIVE_COLOR_MODE, // Deprecated. Use GET_DYNAMIC_DISPLAY_INFO instead.
SET_ACTIVE_COLOR_MODE,
ENABLE_VSYNC_INJECTIONS,
INJECT_VSYNC,
GET_LAYER_DEBUG_INFO,
GET_COMPOSITION_PREFERENCE,
GET_COLOR_MANAGEMENT,
GET_DISPLAYED_CONTENT_SAMPLING_ATTRIBUTES,
SET_DISPLAY_CONTENT_SAMPLING_ENABLED,
GET_DISPLAYED_CONTENT_SAMPLE,
GET_PROTECTED_CONTENT_SUPPORT,
IS_WIDE_COLOR_DISPLAY,
GET_DISPLAY_NATIVE_PRIMARIES,
GET_PHYSICAL_DISPLAY_IDS,
ADD_REGION_SAMPLING_LISTENER,
REMOVE_REGION_SAMPLING_LISTENER,
SET_DESIRED_DISPLAY_MODE_SPECS,
GET_DESIRED_DISPLAY_MODE_SPECS,
GET_DISPLAY_BRIGHTNESS_SUPPORT,
SET_DISPLAY_BRIGHTNESS,
CAPTURE_DISPLAY_BY_ID,
NOTIFY_POWER_BOOST,
SET_GLOBAL_SHADOW_SETTINGS,
GET_AUTO_LOW_LATENCY_MODE_SUPPORT, // Deprecated. Use GET_DYNAMIC_DISPLAY_INFO instead.
SET_AUTO_LOW_LATENCY_MODE,
GET_GAME_CONTENT_TYPE_SUPPORT, // Deprecated. Use GET_DYNAMIC_DISPLAY_INFO instead.
SET_GAME_CONTENT_TYPE,
SET_FRAME_RATE,
ACQUIRE_FRAME_RATE_FLEXIBILITY_TOKEN,
SET_FRAME_TIMELINE_INFO,
ADD_TRANSACTION_TRACE_LISTENER,
GET_GPU_CONTEXT_PRIORITY,
GET_MAX_ACQUIRED_BUFFER_COUNT,
GET_DYNAMIC_DISPLAY_INFO,
ADD_FPS_LISTENER,
REMOVE_FPS_LISTENER,
OVERRIDE_HDR_TYPES,
ADD_HDR_LAYER_INFO_LISTENER,
REMOVE_HDR_LAYER_INFO_LISTENER,
ON_PULL_ATOM,
ADD_TUNNEL_MODE_ENABLED_LISTENER,
REMOVE_TUNNEL_MODE_ENABLED_LISTENER,
// Always append new enum to the end.
};
virtual status_t onTransact(uint32_t code, const Parcel& data,
Parcel* reply, uint32_t flags = 0);
};
frameworks/native/libs/gui/ISurfaceComposer.cpp
status_t BnSurfaceComposer::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch(code) {
case CREATE_CONNECTION: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> b = IInterface::asBinder(createConnection());
reply->writeStrongBinder(b);
return NO_ERROR;
}
case SET_TRANSACTION_STATE: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
FrameTimelineInfo frameTimelineInfo;
SAFE_PARCEL(frameTimelineInfo.read, data);
uint32_t count = 0;
SAFE_PARCEL_READ_SIZE(data.readUint32, &count, data.dataSize());
Vector<ComposerState> state;
state.setCapacity(count);
for (size_t i = 0; i < count; i++) {
ComposerState s;
SAFE_PARCEL(s.read, data);
state.add(s);
}
SAFE_PARCEL_READ_SIZE(data.readUint32, &count, data.dataSize());
DisplayState d;
Vector<DisplayState> displays;
displays.setCapacity(count);
for (size_t i = 0; i < count; i++) {
SAFE_PARCEL(d.read, data);
displays.add(d);
}
uint32_t stateFlags = 0;
SAFE_PARCEL(data.readUint32, &stateFlags);
sp<IBinder> applyToken;
SAFE_PARCEL(data.readStrongBinder, &applyToken);
InputWindowCommands inputWindowCommands;
SAFE_PARCEL(inputWindowCommands.read, data);
int64_t desiredPresentTime = 0;
bool isAutoTimestamp = true;
SAFE_PARCEL(data.readInt64, &desiredPresentTime);
SAFE_PARCEL(data.readBool, &isAutoTimestamp);
client_cache_t uncachedBuffer;
sp<IBinder> tmpBinder;
SAFE_PARCEL(data.readNullableStrongBinder, &tmpBinder);
uncachedBuffer.token = tmpBinder;
SAFE_PARCEL(data.readUint64, &uncachedBuffer.id);
bool hasListenerCallbacks = false;
SAFE_PARCEL(data.readBool, &hasListenerCallbacks);
std::vector<ListenerCallbacks> listenerCallbacks;
int32_t listenersSize = 0;
SAFE_PARCEL_READ_SIZE(data.readInt32, &listenersSize, data.dataSize());
for (int32_t i = 0; i < listenersSize; i++) {
SAFE_PARCEL(data.readStrongBinder, &tmpBinder);
std::vector<CallbackId> callbackIds;
SAFE_PARCEL(data.readParcelableVector, &callbackIds);
listenerCallbacks.emplace_back(tmpBinder, callbackIds);
}
uint64_t transactionId = -1;
SAFE_PARCEL(data.readUint64, &transactionId);
return setTransactionState(frameTimelineInfo, state, displays, stateFlags, applyToken,
inputWindowCommands, desiredPresentTime, isAutoTimestamp,
uncachedBuffer, hasListenerCallbacks, listenerCallbacks,
transactionId);
}
case BOOT_FINISHED: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
bootFinished();
return NO_ERROR;
}
case CAPTURE_DISPLAY: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
DisplayCaptureArgs args;
sp<IScreenCaptureListener> captureListener;
SAFE_PARCEL(args.read, data);
SAFE_PARCEL(data.readStrongBinder, &captureListener);
return captureDisplay(args, captureListener);
}
case CAPTURE_DISPLAY_BY_ID: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
uint64_t displayOrLayerStack = 0;
sp<IScreenCaptureListener> captureListener;
SAFE_PARCEL(data.readUint64, &displayOrLayerStack);
SAFE_PARCEL(data.readStrongBinder, &captureListener);
return captureDisplay(displayOrLayerStack, captureListener);
}
case CAPTURE_LAYERS: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
LayerCaptureArgs args;
sp<IScreenCaptureListener> captureListener;
SAFE_PARCEL(args.read, data);
SAFE_PARCEL(data.readStrongBinder, &captureListener);
return captureLayers(args, captureListener);
}
case AUTHENTICATE_SURFACE: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IGraphicBufferProducer> bufferProducer =
interface_cast<IGraphicBufferProducer>(data.readStrongBinder());
int32_t result = authenticateSurfaceTexture(bufferProducer) ? 1 : 0;
reply->writeInt32(result);
return NO_ERROR;
}
case GET_SUPPORTED_FRAME_TIMESTAMPS: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
std::vector<FrameEvent> supportedTimestamps;
status_t result = getSupportedFrameTimestamps(&supportedTimestamps);
status_t err = reply->writeInt32(result);
if (err != NO_ERROR) {
return err;
}
if (result != NO_ERROR) {
return result;
}
std::vector<int32_t> supported;
supported.reserve(supportedTimestamps.size());
for (FrameEvent s : supportedTimestamps) {
supported.push_back(static_cast<int32_t>(s));
}
return reply->writeInt32Vector(supported);
}
case CREATE_DISPLAY_EVENT_CONNECTION: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
auto vsyncSource = static_cast<ISurfaceComposer::VsyncSource>(data.readInt32());
EventRegistrationFlags eventRegistration =
static_cast<EventRegistration>(data.readUint32());
sp<IDisplayEventConnection> connection(
createDisplayEventConnection(vsyncSource, eventRegistration));
reply->writeStrongBinder(IInterface::asBinder(connection));
return NO_ERROR;
}
case CREATE_DISPLAY: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
String8 displayName;
SAFE_PARCEL(data.readString8, &displayName);
bool secure = false;
SAFE_PARCEL(data.readBool, &secure);
sp<IBinder> display = createDisplay(displayName, secure);
SAFE_PARCEL(reply->writeStrongBinder, display);
return NO_ERROR;
}
case DESTROY_DISPLAY: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> display = data.readStrongBinder();
destroyDisplay(display);
return NO_ERROR;
}
case GET_PHYSICAL_DISPLAY_TOKEN: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
PhysicalDisplayId displayId(data.readUint64());
sp<IBinder> display = getPhysicalDisplayToken(displayId);
reply->writeStrongBinder(display);
return NO_ERROR;
}
case GET_DISPLAY_STATE: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
ui::DisplayState state;
const sp<IBinder> display = data.readStrongBinder();
const status_t result = getDisplayState(display, &state);
reply->writeInt32(result);
if (result == NO_ERROR) {
memcpy(reply->writeInplace(sizeof(ui::DisplayState)), &state,
sizeof(ui::DisplayState));
}
return NO_ERROR;
}
case GET_STATIC_DISPLAY_INFO: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
ui::StaticDisplayInfo info;
const sp<IBinder> display = data.readStrongBinder();
const status_t result = getStaticDisplayInfo(display, &info);
SAFE_PARCEL(reply->writeInt32, result);
if (result != NO_ERROR) return result;
SAFE_PARCEL(reply->write, info);
return NO_ERROR;
}
case GET_DYNAMIC_DISPLAY_INFO: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
ui::DynamicDisplayInfo info;
const sp<IBinder> display = data.readStrongBinder();
const status_t result = getDynamicDisplayInfo(display, &info);
SAFE_PARCEL(reply->writeInt32, result);
if (result != NO_ERROR) return result;
SAFE_PARCEL(reply->write, info);
return NO_ERROR;
}
case GET_DISPLAY_STATS: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
DisplayStatInfo stats;
sp<IBinder> display = data.readStrongBinder();
status_t result = getDisplayStats(display, &stats);
reply->writeInt32(result);
if (result == NO_ERROR) {
memcpy(reply->writeInplace(sizeof(DisplayStatInfo)),
&stats, sizeof(DisplayStatInfo));
}
return NO_ERROR;
}
case GET_DISPLAY_NATIVE_PRIMARIES: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
ui::DisplayPrimaries primaries;
sp<IBinder> display = nullptr;
status_t result = data.readStrongBinder(&display);
if (result != NO_ERROR) {
ALOGE("getDisplayNativePrimaries failed to readStrongBinder: %d", result);
return result;
}
result = getDisplayNativePrimaries(display, primaries);
reply->writeInt32(result);
if (result == NO_ERROR) {
memcpy(reply->writeInplace(sizeof(ui::DisplayPrimaries)), &primaries,
sizeof(ui::DisplayPrimaries));
}
return NO_ERROR;
}
case SET_ACTIVE_COLOR_MODE: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> display = nullptr;
status_t result = data.readStrongBinder(&display);
if (result != NO_ERROR) {
ALOGE("getActiveColorMode failed to readStrongBinder: %d", result);
return result;
}
int32_t colorModeInt = 0;
result = data.readInt32(&colorModeInt);
if (result != NO_ERROR) {
ALOGE("setActiveColorMode failed to readInt32: %d", result);
return result;
}
result = setActiveColorMode(display,
static_cast<ColorMode>(colorModeInt));
result = reply->writeInt32(result);
return result;
}
case SET_AUTO_LOW_LATENCY_MODE: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> display = nullptr;
status_t result = data.readStrongBinder(&display);
if (result != NO_ERROR) {
ALOGE("setAutoLowLatencyMode failed to readStrongBinder: %d", result);
return result;
}
bool setAllm = false;
result = data.readBool(&setAllm);
if (result != NO_ERROR) {
ALOGE("setAutoLowLatencyMode failed to readBool: %d", result);
return result;
}
setAutoLowLatencyMode(display, setAllm);
return result;
}
case SET_GAME_CONTENT_TYPE: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> display = nullptr;
status_t result = data.readStrongBinder(&display);
if (result != NO_ERROR) {
ALOGE("setGameContentType failed to readStrongBinder: %d", result);
return result;
}
bool setGameContentTypeOn = false;
result = data.readBool(&setGameContentTypeOn);
if (result != NO_ERROR) {
ALOGE("setGameContentType failed to readBool: %d", result);
return result;
}
setGameContentType(display, setGameContentTypeOn);
return result;
}
case CLEAR_ANIMATION_FRAME_STATS: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
status_t result = clearAnimationFrameStats();
reply->writeInt32(result);
return NO_ERROR;
}
case GET_ANIMATION_FRAME_STATS: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
FrameStats stats;
status_t result = getAnimationFrameStats(&stats);
reply->write(stats);
reply->writeInt32(result);
return NO_ERROR;
}
case SET_POWER_MODE: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> display = data.readStrongBinder();
int32_t mode = data.readInt32();
setPowerMode(display, mode);
return NO_ERROR;
}
case ENABLE_VSYNC_INJECTIONS: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
bool enable = false;
status_t result = data.readBool(&enable);
if (result != NO_ERROR) {
ALOGE("enableVSyncInjections failed to readBool: %d", result);
return result;
}
return enableVSyncInjections(enable);
}
case INJECT_VSYNC: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
int64_t when = 0;
status_t result = data.readInt64(&when);
if (result != NO_ERROR) {
ALOGE("enableVSyncInjections failed to readInt64: %d", result);
return result;
}
return injectVSync(when);
}
case GET_LAYER_DEBUG_INFO: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
std::vector<LayerDebugInfo> outLayers;
status_t result = getLayerDebugInfo(&outLayers);
reply->writeInt32(result);
if (result == NO_ERROR)
{
result = reply->writeParcelableVector(outLayers);
}
return result;
}
case GET_COMPOSITION_PREFERENCE: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
ui::Dataspace defaultDataspace;
ui::PixelFormat defaultPixelFormat;
ui::Dataspace wideColorGamutDataspace;
ui::PixelFormat wideColorGamutPixelFormat;
status_t error =
getCompositionPreference(&defaultDataspace, &defaultPixelFormat,
&wideColorGamutDataspace, &wideColorGamutPixelFormat);
reply->writeInt32(error);
if (error == NO_ERROR) {
reply->writeInt32(static_cast<int32_t>(defaultDataspace));
reply->writeInt32(static_cast<int32_t>(defaultPixelFormat));
reply->writeInt32(static_cast<int32_t>(wideColorGamutDataspace));
reply->writeInt32(static_cast<int32_t>(wideColorGamutPixelFormat));
}
return error;
}
case GET_COLOR_MANAGEMENT: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
bool result;
status_t error = getColorManagement(&result);
if (error == NO_ERROR) {
reply->writeBool(result);
}
return error;
}
case GET_DISPLAYED_CONTENT_SAMPLING_ATTRIBUTES: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> display = data.readStrongBinder();
ui::PixelFormat format;
ui::Dataspace dataspace;
uint8_t component = 0;
auto result =
getDisplayedContentSamplingAttributes(display, &format, &dataspace, &component);
if (result == NO_ERROR) {
reply->writeUint32(static_cast<uint32_t>(format));
reply->writeUint32(static_cast<uint32_t>(dataspace));
reply->writeUint32(static_cast<uint32_t>(component));
}
return result;
}
case SET_DISPLAY_CONTENT_SAMPLING_ENABLED: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> display = nullptr;
bool enable = false;
int8_t componentMask = 0;
uint64_t maxFrames = 0;
status_t result = data.readStrongBinder(&display);
if (result != NO_ERROR) {
ALOGE("setDisplayContentSamplingEnabled failure in reading Display token: %d",
result);
return result;
}
result = data.readBool(&enable);
if (result != NO_ERROR) {
ALOGE("setDisplayContentSamplingEnabled failure in reading enable: %d", result);
return result;
}
result = data.readByte(static_cast<int8_t*>(&componentMask));
if (result != NO_ERROR) {
ALOGE("setDisplayContentSamplingEnabled failure in reading component mask: %d",
result);
return result;
}
result = data.readUint64(&maxFrames);
if (result != NO_ERROR) {
ALOGE("setDisplayContentSamplingEnabled failure in reading max frames: %d", result);
return result;
}
return setDisplayContentSamplingEnabled(display, enable,
static_cast<uint8_t>(componentMask), maxFrames);
}
case GET_DISPLAYED_CONTENT_SAMPLE: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> display = data.readStrongBinder();
uint64_t maxFrames = 0;
uint64_t timestamp = 0;
status_t result = data.readUint64(&maxFrames);
if (result != NO_ERROR) {
ALOGE("getDisplayedContentSample failure in reading max frames: %d", result);
return result;
}
result = data.readUint64(×tamp);
if (result != NO_ERROR) {
ALOGE("getDisplayedContentSample failure in reading timestamp: %d", result);
return result;
}
DisplayedFrameStats stats;
result = getDisplayedContentSample(display, maxFrames, timestamp, &stats);
if (result == NO_ERROR) {
reply->writeUint64(stats.numFrames);
reply->writeUint64Vector(stats.component_0_sample);
reply->writeUint64Vector(stats.component_1_sample);
reply->writeUint64Vector(stats.component_2_sample);
reply->writeUint64Vector(stats.component_3_sample);
}
return result;
}
case GET_PROTECTED_CONTENT_SUPPORT: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
bool result;
status_t error = getProtectedContentSupport(&result);
if (error == NO_ERROR) {
reply->writeBool(result);
}
return error;
}
case IS_WIDE_COLOR_DISPLAY: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> display = nullptr;
status_t error = data.readStrongBinder(&display);
if (error != NO_ERROR) {
return error;
}
bool result;
error = isWideColorDisplay(display, &result);
if (error == NO_ERROR) {
reply->writeBool(result);
}
return error;
}
case GET_PHYSICAL_DISPLAY_IDS: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
std::vector<PhysicalDisplayId> ids = getPhysicalDisplayIds();
std::vector<uint64_t> rawIds(ids.size());
std::transform(ids.begin(), ids.end(), rawIds.begin(),
[](PhysicalDisplayId id) { return id.value; });
return reply->writeUint64Vector(rawIds);
}
case ADD_REGION_SAMPLING_LISTENER: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
Rect samplingArea;
status_t result = data.read(samplingArea);
if (result != NO_ERROR) {
ALOGE("addRegionSamplingListener: Failed to read sampling area");
return result;
}
sp<IBinder> stopLayerHandle;
result = data.readNullableStrongBinder(&stopLayerHandle);
if (result != NO_ERROR) {
ALOGE("addRegionSamplingListener: Failed to read stop layer handle");
return result;
}
sp<IRegionSamplingListener> listener;
result = data.readNullableStrongBinder(&listener);
if (result != NO_ERROR) {
ALOGE("addRegionSamplingListener: Failed to read listener");
return result;
}
return addRegionSamplingListener(samplingArea, stopLayerHandle, listener);
}
case REMOVE_REGION_SAMPLING_LISTENER: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IRegionSamplingListener> listener;
status_t result = data.readNullableStrongBinder(&listener);
if (result != NO_ERROR) {
ALOGE("removeRegionSamplingListener: Failed to read listener");
return result;
}
return removeRegionSamplingListener(listener);
}
case ADD_FPS_LISTENER: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
int32_t taskId;
status_t result = data.readInt32(&taskId);
if (result != NO_ERROR) {
ALOGE("addFpsListener: Failed to read layer handle");
return result;
}
sp<gui::IFpsListener> listener;
result = data.readNullableStrongBinder(&listener);
if (result != NO_ERROR) {
ALOGE("addFpsListener: Failed to read listener");
return result;
}
return addFpsListener(taskId, listener);
}
case REMOVE_FPS_LISTENER: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<gui::IFpsListener> listener;
status_t result = data.readNullableStrongBinder(&listener);
if (result != NO_ERROR) {
ALOGE("removeFpsListener: Failed to read listener");
return result;
}
return removeFpsListener(listener);
}
case ADD_TUNNEL_MODE_ENABLED_LISTENER: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<gui::ITunnelModeEnabledListener> listener;
status_t result = data.readNullableStrongBinder(&listener);
if (result != NO_ERROR) {
ALOGE("addTunnelModeEnabledListener: Failed to read listener");
return result;
}
return addTunnelModeEnabledListener(listener);
}
case REMOVE_TUNNEL_MODE_ENABLED_LISTENER: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<gui::ITunnelModeEnabledListener> listener;
status_t result = data.readNullableStrongBinder(&listener);
if (result != NO_ERROR) {
ALOGE("removeTunnelModeEnabledListener: Failed to read listener");
return result;
}
return removeTunnelModeEnabledListener(listener);
}
case SET_DESIRED_DISPLAY_MODE_SPECS: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> displayToken = data.readStrongBinder();
ui::DisplayModeId defaultMode;
status_t result = data.readInt32(&defaultMode);
if (result != NO_ERROR) {
ALOGE("setDesiredDisplayModeSpecs: failed to read defaultMode: %d", result);
return result;
}
if (defaultMode < 0) {
ALOGE("%s: defaultMode must be non-negative but it was %d", __func__, defaultMode);
return BAD_VALUE;
}
bool allowGroupSwitching;
result = data.readBool(&allowGroupSwitching);
if (result != NO_ERROR) {
ALOGE("setDesiredDisplayModeSpecs: failed to read allowGroupSwitching: %d", result);
return result;
}
float primaryRefreshRateMin;
result = data.readFloat(&primaryRefreshRateMin);
if (result != NO_ERROR) {
ALOGE("setDesiredDisplayModeSpecs: failed to read primaryRefreshRateMin: %d",
result);
return result;
}
float primaryRefreshRateMax;
result = data.readFloat(&primaryRefreshRateMax);
if (result != NO_ERROR) {
ALOGE("setDesiredDisplayModeSpecs: failed to read primaryRefreshRateMax: %d",
result);
return result;
}
float appRequestRefreshRateMin;
result = data.readFloat(&appRequestRefreshRateMin);
if (result != NO_ERROR) {
ALOGE("setDesiredDisplayModeSpecs: failed to read appRequestRefreshRateMin: %d",
result);
return result;
}
float appRequestRefreshRateMax;
result = data.readFloat(&appRequestRefreshRateMax);
if (result != NO_ERROR) {
ALOGE("setDesiredDisplayModeSpecs: failed to read appRequestRefreshRateMax: %d",
result);
return result;
}
result = setDesiredDisplayModeSpecs(displayToken, defaultMode, allowGroupSwitching,
primaryRefreshRateMin, primaryRefreshRateMax,
appRequestRefreshRateMin, appRequestRefreshRateMax);
if (result != NO_ERROR) {
ALOGE("setDesiredDisplayModeSpecs: failed to call setDesiredDisplayModeSpecs: "
"%d",
result);
return result;
}
reply->writeInt32(result);
return result;
}
case GET_DESIRED_DISPLAY_MODE_SPECS: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> displayToken = data.readStrongBinder();
ui::DisplayModeId defaultMode;
bool allowGroupSwitching;
float primaryRefreshRateMin;
float primaryRefreshRateMax;
float appRequestRefreshRateMin;
float appRequestRefreshRateMax;
status_t result =
getDesiredDisplayModeSpecs(displayToken, &defaultMode, &allowGroupSwitching,
&primaryRefreshRateMin, &primaryRefreshRateMax,
&appRequestRefreshRateMin,
&appRequestRefreshRateMax);
if (result != NO_ERROR) {
ALOGE("getDesiredDisplayModeSpecs: failed to get getDesiredDisplayModeSpecs: "
"%d",
result);
return result;
}
result = reply->writeInt32(defaultMode);
if (result != NO_ERROR) {
ALOGE("getDesiredDisplayModeSpecs: failed to write defaultMode: %d", result);
return result;
}
result = reply->writeBool(allowGroupSwitching);
if (result != NO_ERROR) {
ALOGE("getDesiredDisplayModeSpecs: failed to write allowGroupSwitching: %d",
result);
return result;
}
result = reply->writeFloat(primaryRefreshRateMin);
if (result != NO_ERROR) {
ALOGE("getDesiredDisplayModeSpecs: failed to write primaryRefreshRateMin: %d",
result);
return result;
}
result = reply->writeFloat(primaryRefreshRateMax);
if (result != NO_ERROR) {
ALOGE("getDesiredDisplayModeSpecs: failed to write primaryRefreshRateMax: %d",
result);
return result;
}
result = reply->writeFloat(appRequestRefreshRateMin);
if (result != NO_ERROR) {
ALOGE("getDesiredDisplayModeSpecs: failed to write appRequestRefreshRateMin: %d",
result);
return result;
}
result = reply->writeFloat(appRequestRefreshRateMax);
if (result != NO_ERROR) {
ALOGE("getDesiredDisplayModeSpecs: failed to write appRequestRefreshRateMax: %d",
result);
return result;
}
reply->writeInt32(result);
return result;
}
case GET_DISPLAY_BRIGHTNESS_SUPPORT: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> displayToken;
status_t error = data.readNullableStrongBinder(&displayToken);
if (error != NO_ERROR) {
ALOGE("getDisplayBrightnessSupport: failed to read display token: %d", error);
return error;
}
bool support = false;
error = getDisplayBrightnessSupport(displayToken, &support);
reply->writeBool(support);
return error;
}
case SET_DISPLAY_BRIGHTNESS: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> displayToken;
status_t error = data.readNullableStrongBinder(&displayToken);
if (error != NO_ERROR) {
ALOGE("setDisplayBrightness: failed to read display token: %d", error);
return error;
}
gui::DisplayBrightness brightness;
error = data.readParcelable(&brightness);
if (error != NO_ERROR) {
ALOGE("setDisplayBrightness: failed to read brightness: %d", error);
return error;
}
return setDisplayBrightness(displayToken, brightness);
}
case ADD_HDR_LAYER_INFO_LISTENER: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> displayToken;
status_t error = data.readNullableStrongBinder(&displayToken);
if (error != NO_ERROR) {
ALOGE("addHdrLayerInfoListener: Failed to read display token");
return error;
}
sp<gui::IHdrLayerInfoListener> listener;
error = data.readNullableStrongBinder(&listener);
if (error != NO_ERROR) {
ALOGE("addHdrLayerInfoListener: Failed to read listener");
return error;
}
return addHdrLayerInfoListener(displayToken, listener);
}
case REMOVE_HDR_LAYER_INFO_LISTENER: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> displayToken;
status_t error = data.readNullableStrongBinder(&displayToken);
if (error != NO_ERROR) {
ALOGE("removeHdrLayerInfoListener: Failed to read display token");
return error;
}
sp<gui::IHdrLayerInfoListener> listener;
error = data.readNullableStrongBinder(&listener);
if (error != NO_ERROR) {
ALOGE("removeHdrLayerInfoListener: Failed to read listener");
return error;
}
return removeHdrLayerInfoListener(displayToken, listener);
}
case NOTIFY_POWER_BOOST: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
int32_t boostId;
status_t error = data.readInt32(&boostId);
if (error != NO_ERROR) {
ALOGE("notifyPowerBoost: failed to read boostId: %d", error);
return error;
}
return notifyPowerBoost(boostId);
}
case SET_GLOBAL_SHADOW_SETTINGS: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
std::vector<float> shadowConfig;
status_t error = data.readFloatVector(&shadowConfig);
if (error != NO_ERROR || shadowConfig.size() != 11) {
ALOGE("setGlobalShadowSettings: failed to read shadowConfig: %d", error);
return error;
}
half4 ambientColor = {shadowConfig[0], shadowConfig[1], shadowConfig[2],
shadowConfig[3]};
half4 spotColor = {shadowConfig[4], shadowConfig[5], shadowConfig[6], shadowConfig[7]};
float lightPosY = shadowConfig[8];
float lightPosZ = shadowConfig[9];
float lightRadius = shadowConfig[10];
return setGlobalShadowSettings(ambientColor, spotColor, lightPosY, lightPosZ,
lightRadius);
}
case SET_FRAME_RATE: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> binder;
SAFE_PARCEL(data.readStrongBinder, &binder);
sp<IGraphicBufferProducer> surface = interface_cast<IGraphicBufferProducer>(binder);
if (!surface) {
ALOGE("setFrameRate: failed to cast to IGraphicBufferProducer");
return BAD_VALUE;
}
float frameRate;
SAFE_PARCEL(data.readFloat, &frameRate);
int8_t compatibility;
SAFE_PARCEL(data.readByte, &compatibility);
int8_t changeFrameRateStrategy;
SAFE_PARCEL(data.readByte, &changeFrameRateStrategy);
status_t result =
setFrameRate(surface, frameRate, compatibility, changeFrameRateStrategy);
reply->writeInt32(result);
return NO_ERROR;
}
case ACQUIRE_FRAME_RATE_FLEXIBILITY_TOKEN: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> token;
status_t result = acquireFrameRateFlexibilityToken(&token);
reply->writeInt32(result);
if (result == NO_ERROR) {
reply->writeStrongBinder(token);
}
return NO_ERROR;
}
case SET_FRAME_TIMELINE_INFO: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> binder;
status_t err = data.readStrongBinder(&binder);
if (err != NO_ERROR) {
ALOGE("setFrameTimelineInfo: failed to read strong binder: %s (%d)", strerror(-err),
-err);
return err;
}
sp<IGraphicBufferProducer> surface = interface_cast<IGraphicBufferProducer>(binder);
if (!surface) {
ALOGE("setFrameTimelineInfo: failed to cast to IGraphicBufferProducer: %s (%d)",
strerror(-err), -err);
return err;
}
FrameTimelineInfo frameTimelineInfo;
SAFE_PARCEL(frameTimelineInfo.read, data);
status_t result = setFrameTimelineInfo(surface, frameTimelineInfo);
reply->writeInt32(result);
return NO_ERROR;
}
case ADD_TRANSACTION_TRACE_LISTENER: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<gui::ITransactionTraceListener> listener;
SAFE_PARCEL(data.readStrongBinder, &listener);
return addTransactionTraceListener(listener);
}
case GET_GPU_CONTEXT_PRIORITY: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
int priority = getGPUContextPriority();
SAFE_PARCEL(reply->writeInt32, priority);
return NO_ERROR;
}
case GET_MAX_ACQUIRED_BUFFER_COUNT: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
int buffers = 0;
int err = getMaxAcquiredBufferCount(&buffers);
if (err != NO_ERROR) {
return err;
}
SAFE_PARCEL(reply->writeInt32, buffers);
return NO_ERROR;
}
case OVERRIDE_HDR_TYPES: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
sp<IBinder> display = nullptr;
SAFE_PARCEL(data.readStrongBinder, &display);
std::vector<int32_t> hdrTypes;
SAFE_PARCEL(data.readInt32Vector, &hdrTypes);
std::vector<ui::Hdr> hdrTypesVector;
for (int i : hdrTypes) {
hdrTypesVector.push_back(static_cast<ui::Hdr>(i));
}
return overrideHdrTypes(display, hdrTypesVector);
}
case ON_PULL_ATOM: {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
int32_t atomId = 0;
SAFE_PARCEL(data.readInt32, &atomId);
std::string pulledData;
bool success;
status_t err = onPullAtom(atomId, &pulledData, &success);
SAFE_PARCEL(reply->writeByteArray, pulledData.size(),
reinterpret_cast<const uint8_t*>(pulledData.data()));
SAFE_PARCEL(reply->writeBool, success);
return err;
}
default: {
return BBinder::onTransact(code, data, reply, flags);
}
}
}
2.1 Code标签扩展
status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags)对应BnSurfaceComposer中Code标签code标签1000~1040
frameworks/native/services/surfaceflinger/SurfaceFlinger.cpp
status_t SurfaceFlinger::onTransact(uint32_t code, const Parcel& data, Parcel* reply,
uint32_t flags) {
status_t credentialCheck = CheckTransactCodeCredentials(code);
if (credentialCheck != OK) {
return credentialCheck;
}
status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags);
if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) {
CHECK_INTERFACE(ISurfaceComposer, data, reply);
IPCThreadState* ipc = IPCThreadState::self();
const int uid = ipc->getCallingUid();
if (CC_UNLIKELY(uid != AID_SYSTEM
&& !PermissionCache::checkCallingPermission(sHardwareTest))) {
const int pid = ipc->getCallingPid();
ALOGE("Permission Denial: "
"can't access SurfaceFlinger pid=%d, uid=%d", pid, uid);
return PERMISSION_DENIED;
}
int n;
switch (code) {
case 1000: // SHOW_CPU, NOT SUPPORTED ANYMORE
case 1001: // SHOW_FPS, NOT SUPPORTED ANYMORE
return NO_ERROR;
case 1002: // SHOW_UPDATES
n = data.readInt32();
mDebugRegion = n ? n : (mDebugRegion ? 0 : 1);
invalidateHwcGeometry();
repaintEverything();
return NO_ERROR;
case 1004:{ // repaint everything
repaintEverything();
return NO_ERROR;
}
case 1005:{ // force transaction
Mutex::Autolock _l(mStateLock);
setTransactionFlags(
eTransactionNeeded|
eDisplayTransactionNeeded|
eTraversalNeeded);
return NO_ERROR;
}
case 1006:{ // send empty update
signalRefresh();
return NO_ERROR;
}
case 1008: // toggle use of hw composer
n = data.readInt32();
mDebugDisableHWC = n != 0;
invalidateHwcGeometry();
repaintEverything();
return NO_ERROR;
case 1009: // toggle use of transform hint
n = data.readInt32();
mDebugDisableTransformHint = n != 0;
invalidateHwcGeometry();
repaintEverything();
return NO_ERROR;
case 1010: // interrogate.
reply->writeInt32(0);
reply->writeInt32(0);
reply->writeInt32(mDebugRegion);
reply->writeInt32(0);
reply->writeInt32(mDebugDisableHWC);
return NO_ERROR;
case 1013: {
const auto display = getDefaultDisplayDevice();
if (!display) {
return NAME_NOT_FOUND;
}
reply->writeInt32(display->getPageFlipCount());
return NO_ERROR;
}
case 1014: {
Mutex::Autolock _l(mStateLock);
// daltonize
n = data.readInt32();
switch (n % 10) {
case 1:
mDaltonizer.setType(ColorBlindnessType::Protanomaly);
break;
case 2:
mDaltonizer.setType(ColorBlindnessType::Deuteranomaly);
break;
case 3:
mDaltonizer.setType(ColorBlindnessType::Tritanomaly);
break;
default:
mDaltonizer.setType(ColorBlindnessType::None);
break;
}
if (n >= 10) {
mDaltonizer.setMode(ColorBlindnessMode::Correction);
} else {
mDaltonizer.setMode(ColorBlindnessMode::Simulation);
}
updateColorMatrixLocked();
return NO_ERROR;
}
case 1015: {
Mutex::Autolock _l(mStateLock);
// apply a color matrix
n = data.readInt32();
if (n) {
// color matrix is sent as a column-major mat4 matrix
for (size_t i = 0 ; i < 4; i++) {
for (size_t j = 0; j < 4; j++) {
mClientColorMatrix[i][j] = data.readFloat();
}
}
} else {
mClientColorMatrix = mat4();
}
// Check that supplied matrix's last row is {0,0,0,1} so we can avoid
// the division by w in the fragment shader
float4 lastRow(transpose(mClientColorMatrix)[3]);
if (any(greaterThan(abs(lastRow - float4{0, 0, 0, 1}), float4{1e-4f}))) {
ALOGE("The color transform's last row must be (0, 0, 0, 1)");
}
updateColorMatrixLocked();
return NO_ERROR;
}
case 1016: { // Unused.
return NAME_NOT_FOUND;
}
case 1017: {
n = data.readInt32();
mForceFullDamage = n != 0;
return NO_ERROR;
}
case 1018: { // Modify Choreographer's duration
n = data.readInt32();
mScheduler->setDuration(mAppConnectionHandle, std::chrono::nanoseconds(n), 0ns);
return NO_ERROR;
}
case 1019: { // Modify SurfaceFlinger's duration
n = data.readInt32();
mScheduler->setDuration(mSfConnectionHandle, std::chrono::nanoseconds(n), 0ns);
return NO_ERROR;
}
case 1020: { // Layer updates interceptor
n = data.readInt32();
if (n) {
ALOGV("Interceptor enabled");
mInterceptor->enable(mDrawingState.layersSortedByZ, mDrawingState.displays);
}
else{
ALOGV("Interceptor disabled");
mInterceptor->disable();
}
return NO_ERROR;
}
case 1021: { // Disable HWC virtual displays
const bool enable = data.readInt32() != 0;
static_cast<void>(schedule([this, enable] { enableHalVirtualDisplays(enable); }));
return NO_ERROR;
}
case 1022: { // Set saturation boost
Mutex::Autolock _l(mStateLock);
mGlobalSaturationFactor = std::max(0.0f, std::min(data.readFloat(), 2.0f));
updateColorMatrixLocked();
return NO_ERROR;
}
case 1023: { // Set native mode
int32_t colorMode;
mDisplayColorSetting = static_cast<DisplayColorSetting>(data.readInt32());
if (data.readInt32(&colorMode) == NO_ERROR) {
mForceColorMode = static_cast<ColorMode>(colorMode);
}
invalidateHwcGeometry();
repaintEverything();
return NO_ERROR;
}
// Deprecate, use 1030 to check whether the device is color managed.
case 1024: {
return NAME_NOT_FOUND;
}
case 1025: { // Set layer tracing
n = data.readInt32();
bool tracingEnabledChanged;
if (n) {
ALOGD("LayerTracing enabled");
tracingEnabledChanged = mTracing.enable();
if (tracingEnabledChanged) {
schedule([&]() MAIN_THREAD { mTracing.notify("start"); }).wait();
}
} else {
ALOGD("LayerTracing disabled");
tracingEnabledChanged = mTracing.disable();
}
mTracingEnabledChanged = tracingEnabledChanged;
reply->writeInt32(NO_ERROR);
return NO_ERROR;
}
case 1026: { // Get layer tracing status
reply->writeBool(mTracing.isEnabled());
return NO_ERROR;
}
// Is a DisplayColorSetting supported?
case 1027: {
const auto display = getDefaultDisplayDevice();
if (!display) {
return NAME_NOT_FOUND;
}
DisplayColorSetting setting = static_cast<DisplayColorSetting>(data.readInt32());
switch (setting) {
case DisplayColorSetting::kManaged:
reply->writeBool(useColorManagement);
break;
case DisplayColorSetting::kUnmanaged:
reply->writeBool(true);
break;
case DisplayColorSetting::kEnhanced:
reply->writeBool(display->hasRenderIntent(RenderIntent::ENHANCE));
break;
default: // vendor display color setting
reply->writeBool(
display->hasRenderIntent(static_cast<RenderIntent>(setting)));
break;
}
return NO_ERROR;
}
case 1028: { // Unused.
return NAME_NOT_FOUND;
}
// Set buffer size for SF tracing (value in KB)
case 1029: {
n = data.readInt32();
if (n <= 0 || n > MAX_TRACING_MEMORY) {
ALOGW("Invalid buffer size: %d KB", n);
reply->writeInt32(BAD_VALUE);
return BAD_VALUE;
}
ALOGD("Updating trace buffer to %d KB", n);
mTracing.setBufferSize(n * 1024);
reply->writeInt32(NO_ERROR);
return NO_ERROR;
}
// Is device color managed?
case 1030: {
reply->writeBool(useColorManagement);
return NO_ERROR;
}
// Override default composition data space
// adb shell service call SurfaceFlinger 1031 i32 1 DATASPACE_NUMBER DATASPACE_NUMBER \
// && adb shell stop zygote && adb shell start zygote
// to restore: adb shell service call SurfaceFlinger 1031 i32 0 && \
// adb shell stop zygote && adb shell start zygote
case 1031: {
Mutex::Autolock _l(mStateLock);
n = data.readInt32();
if (n) {
n = data.readInt32();
if (n) {
Dataspace dataspace = static_cast<Dataspace>(n);
if (!validateCompositionDataspace(dataspace)) {
return BAD_VALUE;
}
mDefaultCompositionDataspace = dataspace;
}
n = data.readInt32();
if (n) {
Dataspace dataspace = static_cast<Dataspace>(n);
if (!validateCompositionDataspace(dataspace)) {
return BAD_VALUE;
}
mWideColorGamutCompositionDataspace = dataspace;
}
} else {
// restore composition data space.
mDefaultCompositionDataspace = defaultCompositionDataspace;
mWideColorGamutCompositionDataspace = wideColorGamutCompositionDataspace;
}
return NO_ERROR;
}
// Set trace flags
case 1033: {
n = data.readUint32();
ALOGD("Updating trace flags to 0x%x", n);
mTracing.setTraceFlags(n);
reply->writeInt32(NO_ERROR);
return NO_ERROR;
}
case 1034: {
switch (n = data.readInt32()) {
case 0:
case 1:
enableRefreshRateOverlay(static_cast<bool>(n));
break;
default: {
Mutex::Autolock lock(mStateLock);
reply->writeBool(mRefreshRateOverlay != nullptr);
}
}
return NO_ERROR;
}
case 1035: {
const int modeId = data.readInt32();
mDebugDisplayModeSetByBackdoor = false;
const auto displayId = [&]() -> std::optional<PhysicalDisplayId> {
uint64_t inputDisplayId = 0;
if (data.readUint64(&inputDisplayId) == NO_ERROR) {
const auto token = getPhysicalDisplayToken(
static_cast<PhysicalDisplayId>(inputDisplayId));
if (!token) {
ALOGE("No display with id: %" PRIu64, inputDisplayId);
return std::nullopt;
}
return std::make_optional<PhysicalDisplayId>(inputDisplayId);
}
return getInternalDisplayId();
}();
if (!displayId) {
ALOGE("No display found");
return NO_ERROR;
}
status_t result = setActiveMode(getPhysicalDisplayToken(*displayId), modeId);
if (result != NO_ERROR) {
return result;
}
mDebugDisplayModeSetByBackdoor = true;
return NO_ERROR;
}
case 1036: {
if (data.readInt32() > 0) {
status_t result =
acquireFrameRateFlexibilityToken(&mDebugFrameRateFlexibilityToken);
if (result != NO_ERROR) {
return result;
}
} else {
mDebugFrameRateFlexibilityToken = nullptr;
}
return NO_ERROR;
}
// Inject a hotplug connected event for the primary display. This will deallocate and
// reallocate the display state including framebuffers.
case 1037: {
std::optional<hal::HWDisplayId> hwcId;
{
Mutex::Autolock lock(mStateLock);
hwcId = getHwComposer().getInternalHwcDisplayId();
}
onComposerHalHotplug(*hwcId, hal::Connection::CONNECTED);
return NO_ERROR;
}
// Modify the max number of display frames stored within FrameTimeline
case 1038: {
n = data.readInt32();
if (n < 0 || n > MAX_ALLOWED_DISPLAY_FRAMES) {
ALOGW("Invalid max size. Maximum allowed is %d", MAX_ALLOWED_DISPLAY_FRAMES);
return BAD_VALUE;
}
if (n == 0) {
// restore to default
mFrameTimeline->reset();
return NO_ERROR;
}
mFrameTimeline->setMaxDisplayFrames(n);
return NO_ERROR;
}
case 1039: {
PhysicalDisplayId displayId = [&]() {
Mutex::Autolock lock(mStateLock);
return getDefaultDisplayDeviceLocked()->getPhysicalId();
}();
auto inUid = static_cast<uid_t>(data.readInt32());
const auto refreshRate = data.readFloat();
mScheduler->setPreferredRefreshRateForUid(FrameRateOverride{inUid, refreshRate});
mScheduler->onFrameRateOverridesChanged(mAppConnectionHandle, displayId);
return NO_ERROR;
}
// Toggle caching feature
// First argument is an int32 - nonzero enables caching and zero disables caching
// Second argument is an optional uint64 - if present, then limits enabling/disabling
// caching to a particular physical display
case 1040: {
status_t error =
schedule([&] {
n = data.readInt32();
std::optional<PhysicalDisplayId> inputId = std::nullopt;
if (uint64_t inputDisplayId;
data.readUint64(&inputDisplayId) == NO_ERROR) {
const auto token = getPhysicalDisplayToken(
static_cast<PhysicalDisplayId>(inputDisplayId));
if (!token) {
ALOGE("No display with id: %" PRIu64, inputDisplayId);
return NAME_NOT_FOUND;
}
inputId = std::make_optional<PhysicalDisplayId>(inputDisplayId);
}
{
Mutex::Autolock lock(mStateLock);
mLayerCachingEnabled = n != 0;
for (const auto& [_, display] : mDisplays) {
if (!inputId || *inputId == display->getPhysicalId()) {
display->enableLayerCaching(mLayerCachingEnabled);
}
}
}
return OK;
}).get();
if (error != OK) {
return error;
}
invalidateHwcGeometry();
repaintEverything();
return NO_ERROR;
}
}
}
return err;
}
2.2 Code标签扩展对应调用
| Code扩展标签 | 调用 |
|---|---|
| 1000 | SHOW_CPU, NOT SUPPORTED ANYMORE |
| 1001 | SHOW_FPS, NOT SUPPORTED ANYMORE |
| 1002 | ShowSurfaceUpdatesPreferenceController.java、DevelopmentFragment.java |
| 1004 | |
| 1008 | HardwareOverlaysPreferenceController.java、DevelopmentFragment.java |
| 1010 | HardwareOverlaysPreferenceController.java、ShowSurfaceUpdatesPreferenceController.java、DevelopmentFragment.java |
| 1014 | DisplayTransformManager.java |
| 1015 | DisplayTransformManager.java |
| 1022 | DisplayTransformManager.java |
| 1023 | DisplayTransformManager.java |
| 1025 | DevelopmentTiles.java、WindowManagerService.java、DevelopmentTiles.java |
| 1026 | DevelopmentTiles.java、WindowManagerService.java、DevelopmentTiles.java |
| 1030 | DisplayTransformManager.java |
| 1033 | WindowManagerService.java |
| 1034 | ShowRefreshRatePreferenceController.java |
| 1035 | |
| 1039 | |
| 1040 |
3、SurfaceFlinger服务的BpSurfaceComposer端
frameworks/native/libs/gui/include/gui/ISurfaceComposer.h
frameworks/native/libs/gui/ISurfaceComposer.cpp
class BpSurfaceComposer : public BpInterface<ISurfaceComposer>
{
public:
explicit BpSurfaceComposer(const sp<IBinder>& impl)
: BpInterface<ISurfaceComposer>(impl)
{
}
virtual ~BpSurfaceComposer();
virtual sp<ISurfaceComposerClient> createConnection()
{
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
remote()->transact(BnSurfaceComposer::CREATE_CONNECTION, data, &reply);
return interface_cast<ISurfaceComposerClient>(reply.readStrongBinder());
}
status_t setTransactionState(const FrameTimelineInfo& frameTimelineInfo,
const Vector<ComposerState>& state,
const Vector<DisplayState>& displays, uint32_t flags,
const sp<IBinder>& applyToken, const InputWindowCommands& commands,
int64_t desiredPresentTime, bool isAutoTimestamp,
const client_cache_t& uncacheBuffer, bool hasListenerCallbacks,
const std::vector<ListenerCallbacks>& listenerCallbacks,
uint64_t transactionId) override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
SAFE_PARCEL(frameTimelineInfo.write, data);
SAFE_PARCEL(data.writeUint32, static_cast<uint32_t>(state.size()));
for (const auto& s : state) {
SAFE_PARCEL(s.write, data);
}
SAFE_PARCEL(data.writeUint32, static_cast<uint32_t>(displays.size()));
for (const auto& d : displays) {
SAFE_PARCEL(d.write, data);
}
SAFE_PARCEL(data.writeUint32, flags);
SAFE_PARCEL(data.writeStrongBinder, applyToken);
SAFE_PARCEL(commands.write, data);
SAFE_PARCEL(data.writeInt64, desiredPresentTime);
SAFE_PARCEL(data.writeBool, isAutoTimestamp);
SAFE_PARCEL(data.writeStrongBinder, uncacheBuffer.token.promote());
SAFE_PARCEL(data.writeUint64, uncacheBuffer.id);
SAFE_PARCEL(data.writeBool, hasListenerCallbacks);
SAFE_PARCEL(data.writeVectorSize, listenerCallbacks);
for (const auto& [listener, callbackIds] : listenerCallbacks) {
SAFE_PARCEL(data.writeStrongBinder, listener);
SAFE_PARCEL(data.writeParcelableVector, callbackIds);
}
SAFE_PARCEL(data.writeUint64, transactionId);
return remote()->transact(BnSurfaceComposer::SET_TRANSACTION_STATE, data, &reply);
}
void bootFinished() override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
remote()->transact(BnSurfaceComposer::BOOT_FINISHED, data, &reply);
}
status_t captureDisplay(const DisplayCaptureArgs& args,
const sp<IScreenCaptureListener>& captureListener) override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
SAFE_PARCEL(args.write, data);
SAFE_PARCEL(data.writeStrongBinder, IInterface::asBinder(captureListener));
return remote()->transact(BnSurfaceComposer::CAPTURE_DISPLAY, data, &reply);
}
status_t captureDisplay(uint64_t displayOrLayerStack,
const sp<IScreenCaptureListener>& captureListener) override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
SAFE_PARCEL(data.writeUint64, displayOrLayerStack);
SAFE_PARCEL(data.writeStrongBinder, IInterface::asBinder(captureListener));
return remote()->transact(BnSurfaceComposer::CAPTURE_DISPLAY_BY_ID, data, &reply);
}
status_t captureLayers(const LayerCaptureArgs& args,
const sp<IScreenCaptureListener>& captureListener) override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
SAFE_PARCEL(args.write, data);
SAFE_PARCEL(data.writeStrongBinder, IInterface::asBinder(captureListener));
return remote()->transact(BnSurfaceComposer::CAPTURE_LAYERS, data, &reply);
}
bool authenticateSurfaceTexture(
const sp<IGraphicBufferProducer>& bufferProducer) const override {
Parcel data, reply;
int err = NO_ERROR;
err = data.writeInterfaceToken(
ISurfaceComposer::getInterfaceDescriptor());
if (err != NO_ERROR) {
ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing "
"interface descriptor: %s (%d)", strerror(-err), -err);
return false;
}
err = data.writeStrongBinder(IInterface::asBinder(bufferProducer));
if (err != NO_ERROR) {
ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error writing "
"strong binder to parcel: %s (%d)", strerror(-err), -err);
return false;
}
err = remote()->transact(BnSurfaceComposer::AUTHENTICATE_SURFACE, data,
&reply);
if (err != NO_ERROR) {
ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error "
"performing transaction: %s (%d)", strerror(-err), -err);
return false;
}
int32_t result = 0;
err = reply.readInt32(&result);
if (err != NO_ERROR) {
ALOGE("ISurfaceComposer::authenticateSurfaceTexture: error "
"retrieving result: %s (%d)", strerror(-err), -err);
return false;
}
return result != 0;
}
status_t getSupportedFrameTimestamps(std::vector<FrameEvent>* outSupported) const override {
if (!outSupported) {
return UNEXPECTED_NULL;
}
outSupported->clear();
Parcel data, reply;
status_t err = data.writeInterfaceToken(
ISurfaceComposer::getInterfaceDescriptor());
if (err != NO_ERROR) {
return err;
}
err = remote()->transact(
BnSurfaceComposer::GET_SUPPORTED_FRAME_TIMESTAMPS,
data, &reply);
if (err != NO_ERROR) {
return err;
}
int32_t result = 0;
err = reply.readInt32(&result);
if (err != NO_ERROR) {
return err;
}
if (result != NO_ERROR) {
return result;
}
std::vector<int32_t> supported;
err = reply.readInt32Vector(&supported);
if (err != NO_ERROR) {
return err;
}
outSupported->reserve(supported.size());
for (int32_t s : supported) {
outSupported->push_back(static_cast<FrameEvent>(s));
}
return NO_ERROR;
}
sp<IDisplayEventConnection> createDisplayEventConnection(
VsyncSource vsyncSource, EventRegistrationFlags eventRegistration) override {
Parcel data, reply;
sp<IDisplayEventConnection> result;
int err = data.writeInterfaceToken(
ISurfaceComposer::getInterfaceDescriptor());
if (err != NO_ERROR) {
return result;
}
data.writeInt32(static_cast<int32_t>(vsyncSource));
data.writeUint32(eventRegistration.get());
err = remote()->transact(
BnSurfaceComposer::CREATE_DISPLAY_EVENT_CONNECTION,
data, &reply);
if (err != NO_ERROR) {
ALOGE("ISurfaceComposer::createDisplayEventConnection: error performing "
"transaction: %s (%d)", strerror(-err), -err);
return result;
}
result = interface_cast<IDisplayEventConnection>(reply.readStrongBinder());
return result;
}
sp<IBinder> createDisplay(const String8& displayName, bool secure) override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
status_t status = data.writeString8(displayName);
if (status) {
return nullptr;
}
status = data.writeBool(secure);
if (status) {
return nullptr;
}
status = remote()->transact(BnSurfaceComposer::CREATE_DISPLAY, data, &reply);
if (status) {
return nullptr;
}
sp<IBinder> display;
status = reply.readNullableStrongBinder(&display);
if (status) {
return nullptr;
}
return display;
}
void destroyDisplay(const sp<IBinder>& display) override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
data.writeStrongBinder(display);
remote()->transact(BnSurfaceComposer::DESTROY_DISPLAY, data, &reply);
}
std::vector<PhysicalDisplayId> getPhysicalDisplayIds() const override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (remote()->transact(BnSurfaceComposer::GET_PHYSICAL_DISPLAY_IDS, data, &reply) ==
NO_ERROR) {
std::vector<uint64_t> rawIds;
if (reply.readUint64Vector(&rawIds) == NO_ERROR) {
std::vector<PhysicalDisplayId> displayIds(rawIds.size());
std::transform(rawIds.begin(), rawIds.end(), displayIds.begin(),
[](uint64_t rawId) { return PhysicalDisplayId(rawId); });
return displayIds;
}
}
return {};
}
sp<IBinder> getPhysicalDisplayToken(PhysicalDisplayId displayId) const override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
data.writeUint64(displayId.value);
remote()->transact(BnSurfaceComposer::GET_PHYSICAL_DISPLAY_TOKEN, data, &reply);
return reply.readStrongBinder();
}
void setPowerMode(const sp<IBinder>& display, int mode) override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
data.writeStrongBinder(display);
data.writeInt32(mode);
remote()->transact(BnSurfaceComposer::SET_POWER_MODE, data, &reply);
}
status_t getDisplayState(const sp<IBinder>& display, ui::DisplayState* state) override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
data.writeStrongBinder(display);
remote()->transact(BnSurfaceComposer::GET_DISPLAY_STATE, data, &reply);
const status_t result = reply.readInt32();
if (result == NO_ERROR) {
memcpy(state, reply.readInplace(sizeof(ui::DisplayState)), sizeof(ui::DisplayState));
}
return result;
}
status_t getStaticDisplayInfo(const sp<IBinder>& display,
ui::StaticDisplayInfo* info) override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
data.writeStrongBinder(display);
remote()->transact(BnSurfaceComposer::GET_STATIC_DISPLAY_INFO, data, &reply);
const status_t result = reply.readInt32();
if (result != NO_ERROR) return result;
return reply.read(*info);
}
status_t getDynamicDisplayInfo(const sp<IBinder>& display,
ui::DynamicDisplayInfo* info) override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
data.writeStrongBinder(display);
remote()->transact(BnSurfaceComposer::GET_DYNAMIC_DISPLAY_INFO, data, &reply);
const status_t result = reply.readInt32();
if (result != NO_ERROR) return result;
return reply.read(*info);
}
status_t getDisplayStats(const sp<IBinder>& display, DisplayStatInfo* stats) override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
data.writeStrongBinder(display);
remote()->transact(BnSurfaceComposer::GET_DISPLAY_STATS, data, &reply);
status_t result = reply.readInt32();
if (result == NO_ERROR) {
memcpy(stats,
reply.readInplace(sizeof(DisplayStatInfo)),
sizeof(DisplayStatInfo));
}
return result;
}
status_t getDisplayNativePrimaries(const sp<IBinder>& display,
ui::DisplayPrimaries& primaries) override {
Parcel data, reply;
status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (result != NO_ERROR) {
ALOGE("getDisplayNativePrimaries failed to writeInterfaceToken: %d", result);
return result;
}
result = data.writeStrongBinder(display);
if (result != NO_ERROR) {
ALOGE("getDisplayNativePrimaries failed to writeStrongBinder: %d", result);
return result;
}
result = remote()->transact(BnSurfaceComposer::GET_DISPLAY_NATIVE_PRIMARIES, data, &reply);
if (result != NO_ERROR) {
ALOGE("getDisplayNativePrimaries failed to transact: %d", result);
return result;
}
result = reply.readInt32();
if (result == NO_ERROR) {
memcpy(&primaries, reply.readInplace(sizeof(ui::DisplayPrimaries)),
sizeof(ui::DisplayPrimaries));
}
return result;
}
status_t setActiveColorMode(const sp<IBinder>& display, ColorMode colorMode) override {
Parcel data, reply;
status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (result != NO_ERROR) {
ALOGE("setActiveColorMode failed to writeInterfaceToken: %d", result);
return result;
}
result = data.writeStrongBinder(display);
if (result != NO_ERROR) {
ALOGE("setActiveColorMode failed to writeStrongBinder: %d", result);
return result;
}
result = data.writeInt32(static_cast<int32_t>(colorMode));
if (result != NO_ERROR) {
ALOGE("setActiveColorMode failed to writeInt32: %d", result);
return result;
}
result = remote()->transact(BnSurfaceComposer::SET_ACTIVE_COLOR_MODE, data, &reply);
if (result != NO_ERROR) {
ALOGE("setActiveColorMode failed to transact: %d", result);
return result;
}
return static_cast<status_t>(reply.readInt32());
}
void setAutoLowLatencyMode(const sp<IBinder>& display, bool on) override {
Parcel data, reply;
status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (result != NO_ERROR) {
ALOGE("setAutoLowLatencyMode failed to writeInterfaceToken: %d", result);
return;
}
result = data.writeStrongBinder(display);
if (result != NO_ERROR) {
ALOGE("setAutoLowLatencyMode failed to writeStrongBinder: %d", result);
return;
}
result = data.writeBool(on);
if (result != NO_ERROR) {
ALOGE("setAutoLowLatencyMode failed to writeBool: %d", result);
return;
}
result = remote()->transact(BnSurfaceComposer::SET_AUTO_LOW_LATENCY_MODE, data, &reply);
if (result != NO_ERROR) {
ALOGE("setAutoLowLatencyMode failed to transact: %d", result);
return;
}
}
void setGameContentType(const sp<IBinder>& display, bool on) override {
Parcel data, reply;
status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (result != NO_ERROR) {
ALOGE("setGameContentType failed to writeInterfaceToken: %d", result);
return;
}
result = data.writeStrongBinder(display);
if (result != NO_ERROR) {
ALOGE("setGameContentType failed to writeStrongBinder: %d", result);
return;
}
result = data.writeBool(on);
if (result != NO_ERROR) {
ALOGE("setGameContentType failed to writeBool: %d", result);
return;
}
result = remote()->transact(BnSurfaceComposer::SET_GAME_CONTENT_TYPE, data, &reply);
if (result != NO_ERROR) {
ALOGE("setGameContentType failed to transact: %d", result);
}
}
status_t clearAnimationFrameStats() override {
Parcel data, reply;
status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (result != NO_ERROR) {
ALOGE("clearAnimationFrameStats failed to writeInterfaceToken: %d", result);
return result;
}
result = remote()->transact(BnSurfaceComposer::CLEAR_ANIMATION_FRAME_STATS, data, &reply);
if (result != NO_ERROR) {
ALOGE("clearAnimationFrameStats failed to transact: %d", result);
return result;
}
return reply.readInt32();
}
status_t getAnimationFrameStats(FrameStats* outStats) const override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
remote()->transact(BnSurfaceComposer::GET_ANIMATION_FRAME_STATS, data, &reply);
reply.read(*outStats);
return reply.readInt32();
}
virtual status_t overrideHdrTypes(const sp<IBinder>& display,
const std::vector<ui::Hdr>& hdrTypes) {
Parcel data, reply;
SAFE_PARCEL(data.writeInterfaceToken, ISurfaceComposer::getInterfaceDescriptor());
SAFE_PARCEL(data.writeStrongBinder, display);
std::vector<int32_t> hdrTypesVector;
for (ui::Hdr i : hdrTypes) {
hdrTypesVector.push_back(static_cast<int32_t>(i));
}
SAFE_PARCEL(data.writeInt32Vector, hdrTypesVector);
status_t result = remote()->transact(BnSurfaceComposer::OVERRIDE_HDR_TYPES, data, &reply);
if (result != NO_ERROR) {
ALOGE("overrideHdrTypes failed to transact: %d", result);
return result;
}
return result;
}
status_t onPullAtom(const int32_t atomId, std::string* pulledData, bool* success) {
Parcel data, reply;
SAFE_PARCEL(data.writeInterfaceToken, ISurfaceComposer::getInterfaceDescriptor());
SAFE_PARCEL(data.writeInt32, atomId);
status_t err = remote()->transact(BnSurfaceComposer::ON_PULL_ATOM, data, &reply);
if (err != NO_ERROR) {
ALOGE("onPullAtom failed to transact: %d", err);
return err;
}
int32_t size = 0;
SAFE_PARCEL(reply.readInt32, &size);
const void* dataPtr = reply.readInplace(size);
if (dataPtr == nullptr) {
return UNEXPECTED_NULL;
}
pulledData->assign((const char*)dataPtr, size);
SAFE_PARCEL(reply.readBool, success);
return NO_ERROR;
}
status_t enableVSyncInjections(bool enable) override {
Parcel data, reply;
status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (result != NO_ERROR) {
ALOGE("enableVSyncInjections failed to writeInterfaceToken: %d", result);
return result;
}
result = data.writeBool(enable);
if (result != NO_ERROR) {
ALOGE("enableVSyncInjections failed to writeBool: %d", result);
return result;
}
result = remote()->transact(BnSurfaceComposer::ENABLE_VSYNC_INJECTIONS, data, &reply,
IBinder::FLAG_ONEWAY);
if (result != NO_ERROR) {
ALOGE("enableVSyncInjections failed to transact: %d", result);
return result;
}
return result;
}
status_t injectVSync(nsecs_t when) override {
Parcel data, reply;
status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (result != NO_ERROR) {
ALOGE("injectVSync failed to writeInterfaceToken: %d", result);
return result;
}
result = data.writeInt64(when);
if (result != NO_ERROR) {
ALOGE("injectVSync failed to writeInt64: %d", result);
return result;
}
result = remote()->transact(BnSurfaceComposer::INJECT_VSYNC, data, &reply,
IBinder::FLAG_ONEWAY);
if (result != NO_ERROR) {
ALOGE("injectVSync failed to transact: %d", result);
return result;
}
return result;
}
status_t getLayerDebugInfo(std::vector<LayerDebugInfo>* outLayers) override {
if (!outLayers) {
return UNEXPECTED_NULL;
}
Parcel data, reply;
status_t err = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (err != NO_ERROR) {
return err;
}
err = remote()->transact(BnSurfaceComposer::GET_LAYER_DEBUG_INFO, data, &reply);
if (err != NO_ERROR) {
return err;
}
int32_t result = 0;
err = reply.readInt32(&result);
if (err != NO_ERROR) {
return err;
}
if (result != NO_ERROR) {
return result;
}
outLayers->clear();
return reply.readParcelableVector(outLayers);
}
status_t getCompositionPreference(ui::Dataspace* defaultDataspace,
ui::PixelFormat* defaultPixelFormat,
ui::Dataspace* wideColorGamutDataspace,
ui::PixelFormat* wideColorGamutPixelFormat) const override {
Parcel data, reply;
status_t error = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (error != NO_ERROR) {
return error;
}
error = remote()->transact(BnSurfaceComposer::GET_COMPOSITION_PREFERENCE, data, &reply);
if (error != NO_ERROR) {
return error;
}
error = static_cast<status_t>(reply.readInt32());
if (error == NO_ERROR) {
*defaultDataspace = static_cast<ui::Dataspace>(reply.readInt32());
*defaultPixelFormat = static_cast<ui::PixelFormat>(reply.readInt32());
*wideColorGamutDataspace = static_cast<ui::Dataspace>(reply.readInt32());
*wideColorGamutPixelFormat = static_cast<ui::PixelFormat>(reply.readInt32());
}
return error;
}
status_t getColorManagement(bool* outGetColorManagement) const override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
remote()->transact(BnSurfaceComposer::GET_COLOR_MANAGEMENT, data, &reply);
bool result;
status_t err = reply.readBool(&result);
if (err == NO_ERROR) {
*outGetColorManagement = result;
}
return err;
}
status_t getDisplayedContentSamplingAttributes(const sp<IBinder>& display,
ui::PixelFormat* outFormat,
ui::Dataspace* outDataspace,
uint8_t* outComponentMask) const override {
if (!outFormat || !outDataspace || !outComponentMask) return BAD_VALUE;
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
data.writeStrongBinder(display);
status_t error =
remote()->transact(BnSurfaceComposer::GET_DISPLAYED_CONTENT_SAMPLING_ATTRIBUTES,
data, &reply);
if (error != NO_ERROR) {
return error;
}
uint32_t value = 0;
error = reply.readUint32(&value);
if (error != NO_ERROR) {
return error;
}
*outFormat = static_cast<ui::PixelFormat>(value);
error = reply.readUint32(&value);
if (error != NO_ERROR) {
return error;
}
*outDataspace = static_cast<ui::Dataspace>(value);
error = reply.readUint32(&value);
if (error != NO_ERROR) {
return error;
}
*outComponentMask = static_cast<uint8_t>(value);
return error;
}
status_t setDisplayContentSamplingEnabled(const sp<IBinder>& display, bool enable,
uint8_t componentMask, uint64_t maxFrames) override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
data.writeStrongBinder(display);
data.writeBool(enable);
data.writeByte(static_cast<int8_t>(componentMask));
data.writeUint64(maxFrames);
status_t result =
remote()->transact(BnSurfaceComposer::SET_DISPLAY_CONTENT_SAMPLING_ENABLED, data,
&reply);
return result;
}
status_t getDisplayedContentSample(const sp<IBinder>& display, uint64_t maxFrames,
uint64_t timestamp,
DisplayedFrameStats* outStats) const override {
if (!outStats) return BAD_VALUE;
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
data.writeStrongBinder(display);
data.writeUint64(maxFrames);
data.writeUint64(timestamp);
status_t result =
remote()->transact(BnSurfaceComposer::GET_DISPLAYED_CONTENT_SAMPLE, data, &reply);
if (result != NO_ERROR) {
return result;
}
result = reply.readUint64(&outStats->numFrames);
if (result != NO_ERROR) {
return result;
}
result = reply.readUint64Vector(&outStats->component_0_sample);
if (result != NO_ERROR) {
return result;
}
result = reply.readUint64Vector(&outStats->component_1_sample);
if (result != NO_ERROR) {
return result;
}
result = reply.readUint64Vector(&outStats->component_2_sample);
if (result != NO_ERROR) {
return result;
}
result = reply.readUint64Vector(&outStats->component_3_sample);
return result;
}
status_t getProtectedContentSupport(bool* outSupported) const override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
status_t error =
remote()->transact(BnSurfaceComposer::GET_PROTECTED_CONTENT_SUPPORT, data, &reply);
if (error != NO_ERROR) {
return error;
}
error = reply.readBool(outSupported);
return error;
}
status_t isWideColorDisplay(const sp<IBinder>& token,
bool* outIsWideColorDisplay) const override {
Parcel data, reply;
status_t error = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (error != NO_ERROR) {
return error;
}
error = data.writeStrongBinder(token);
if (error != NO_ERROR) {
return error;
}
error = remote()->transact(BnSurfaceComposer::IS_WIDE_COLOR_DISPLAY, data, &reply);
if (error != NO_ERROR) {
return error;
}
error = reply.readBool(outIsWideColorDisplay);
return error;
}
status_t addRegionSamplingListener(const Rect& samplingArea, const sp<IBinder>& stopLayerHandle,
const sp<IRegionSamplingListener>& listener) override {
Parcel data, reply;
status_t error = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (error != NO_ERROR) {
ALOGE("addRegionSamplingListener: Failed to write interface token");
return error;
}
error = data.write(samplingArea);
if (error != NO_ERROR) {
ALOGE("addRegionSamplingListener: Failed to write sampling area");
return error;
}
error = data.writeStrongBinder(stopLayerHandle);
if (error != NO_ERROR) {
ALOGE("addRegionSamplingListener: Failed to write stop layer handle");
return error;
}
error = data.writeStrongBinder(IInterface::asBinder(listener));
if (error != NO_ERROR) {
ALOGE("addRegionSamplingListener: Failed to write listener");
return error;
}
error = remote()->transact(BnSurfaceComposer::ADD_REGION_SAMPLING_LISTENER, data, &reply);
if (error != NO_ERROR) {
ALOGE("addRegionSamplingListener: Failed to transact");
}
return error;
}
status_t removeRegionSamplingListener(const sp<IRegionSamplingListener>& listener) override {
Parcel data, reply;
status_t error = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (error != NO_ERROR) {
ALOGE("removeRegionSamplingListener: Failed to write interface token");
return error;
}
error = data.writeStrongBinder(IInterface::asBinder(listener));
if (error != NO_ERROR) {
ALOGE("removeRegionSamplingListener: Failed to write listener");
return error;
}
error = remote()->transact(BnSurfaceComposer::REMOVE_REGION_SAMPLING_LISTENER, data,
&reply);
if (error != NO_ERROR) {
ALOGE("removeRegionSamplingListener: Failed to transact");
}
return error;
}
virtual status_t addFpsListener(int32_t taskId, const sp<gui::IFpsListener>& listener) {
Parcel data, reply;
SAFE_PARCEL(data.writeInterfaceToken, ISurfaceComposer::getInterfaceDescriptor());
SAFE_PARCEL(data.writeInt32, taskId);
SAFE_PARCEL(data.writeStrongBinder, IInterface::asBinder(listener));
const status_t error =
remote()->transact(BnSurfaceComposer::ADD_FPS_LISTENER, data, &reply);
if (error != OK) {
ALOGE("addFpsListener: Failed to transact");
}
return error;
}
virtual status_t removeFpsListener(const sp<gui::IFpsListener>& listener) {
Parcel data, reply;
SAFE_PARCEL(data.writeInterfaceToken, ISurfaceComposer::getInterfaceDescriptor());
SAFE_PARCEL(data.writeStrongBinder, IInterface::asBinder(listener));
const status_t error =
remote()->transact(BnSurfaceComposer::REMOVE_FPS_LISTENER, data, &reply);
if (error != OK) {
ALOGE("removeFpsListener: Failed to transact");
}
return error;
}
virtual status_t addTunnelModeEnabledListener(
const sp<gui::ITunnelModeEnabledListener>& listener) {
Parcel data, reply;
SAFE_PARCEL(data.writeInterfaceToken, ISurfaceComposer::getInterfaceDescriptor());
SAFE_PARCEL(data.writeStrongBinder, IInterface::asBinder(listener));
const status_t error =
remote()->transact(BnSurfaceComposer::ADD_TUNNEL_MODE_ENABLED_LISTENER, data,
&reply);
if (error != NO_ERROR) {
ALOGE("addTunnelModeEnabledListener: Failed to transact");
}
return error;
}
virtual status_t removeTunnelModeEnabledListener(
const sp<gui::ITunnelModeEnabledListener>& listener) {
Parcel data, reply;
SAFE_PARCEL(data.writeInterfaceToken, ISurfaceComposer::getInterfaceDescriptor());
SAFE_PARCEL(data.writeStrongBinder, IInterface::asBinder(listener));
const status_t error =
remote()->transact(BnSurfaceComposer::REMOVE_TUNNEL_MODE_ENABLED_LISTENER, data,
&reply);
if (error != NO_ERROR) {
ALOGE("removeTunnelModeEnabledListener: Failed to transact");
}
return error;
}
status_t setDesiredDisplayModeSpecs(const sp<IBinder>& displayToken,
ui::DisplayModeId defaultMode, bool allowGroupSwitching,
float primaryRefreshRateMin, float primaryRefreshRateMax,
float appRequestRefreshRateMin,
float appRequestRefreshRateMax) override {
Parcel data, reply;
status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (result != NO_ERROR) {
ALOGE("setDesiredDisplayModeSpecs: failed to writeInterfaceToken: %d", result);
return result;
}
result = data.writeStrongBinder(displayToken);
if (result != NO_ERROR) {
ALOGE("setDesiredDisplayModeSpecs: failed to write display token: %d", result);
return result;
}
result = data.writeInt32(defaultMode);
if (result != NO_ERROR) {
ALOGE("setDesiredDisplayModeSpecs failed to write defaultMode: %d", result);
return result;
}
result = data.writeBool(allowGroupSwitching);
if (result != NO_ERROR) {
ALOGE("setDesiredDisplayModeSpecs failed to write allowGroupSwitching: %d", result);
return result;
}
result = data.writeFloat(primaryRefreshRateMin);
if (result != NO_ERROR) {
ALOGE("setDesiredDisplayModeSpecs failed to write primaryRefreshRateMin: %d", result);
return result;
}
result = data.writeFloat(primaryRefreshRateMax);
if (result != NO_ERROR) {
ALOGE("setDesiredDisplayModeSpecs failed to write primaryRefreshRateMax: %d", result);
return result;
}
result = data.writeFloat(appRequestRefreshRateMin);
if (result != NO_ERROR) {
ALOGE("setDesiredDisplayModeSpecs failed to write appRequestRefreshRateMin: %d",
result);
return result;
}
result = data.writeFloat(appRequestRefreshRateMax);
if (result != NO_ERROR) {
ALOGE("setDesiredDisplayModeSpecs failed to write appRequestRefreshRateMax: %d",
result);
return result;
}
result =
remote()->transact(BnSurfaceComposer::SET_DESIRED_DISPLAY_MODE_SPECS, data, &reply);
if (result != NO_ERROR) {
ALOGE("setDesiredDisplayModeSpecs failed to transact: %d", result);
return result;
}
return reply.readInt32();
}
status_t getDesiredDisplayModeSpecs(const sp<IBinder>& displayToken,
ui::DisplayModeId* outDefaultMode,
bool* outAllowGroupSwitching,
float* outPrimaryRefreshRateMin,
float* outPrimaryRefreshRateMax,
float* outAppRequestRefreshRateMin,
float* outAppRequestRefreshRateMax) override {
if (!outDefaultMode || !outAllowGroupSwitching || !outPrimaryRefreshRateMin ||
!outPrimaryRefreshRateMax || !outAppRequestRefreshRateMin ||
!outAppRequestRefreshRateMax) {
return BAD_VALUE;
}
Parcel data, reply;
status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (result != NO_ERROR) {
ALOGE("getDesiredDisplayModeSpecs failed to writeInterfaceToken: %d", result);
return result;
}
result = data.writeStrongBinder(displayToken);
if (result != NO_ERROR) {
ALOGE("getDesiredDisplayModeSpecs failed to writeStrongBinder: %d", result);
return result;
}
result =
remote()->transact(BnSurfaceComposer::GET_DESIRED_DISPLAY_MODE_SPECS, data, &reply);
if (result != NO_ERROR) {
ALOGE("getDesiredDisplayModeSpecs failed to transact: %d", result);
return result;
}
result = reply.readInt32(outDefaultMode);
if (result != NO_ERROR) {
ALOGE("getDesiredDisplayModeSpecs failed to read defaultMode: %d", result);
return result;
}
if (*outDefaultMode < 0) {
ALOGE("%s: defaultMode must be non-negative but it was %d", __func__, *outDefaultMode);
return BAD_VALUE;
}
result = reply.readBool(outAllowGroupSwitching);
if (result != NO_ERROR) {
ALOGE("getDesiredDisplayModeSpecs failed to read allowGroupSwitching: %d", result);
return result;
}
result = reply.readFloat(outPrimaryRefreshRateMin);
if (result != NO_ERROR) {
ALOGE("getDesiredDisplayModeSpecs failed to read primaryRefreshRateMin: %d", result);
return result;
}
result = reply.readFloat(outPrimaryRefreshRateMax);
if (result != NO_ERROR) {
ALOGE("getDesiredDisplayModeSpecs failed to read primaryRefreshRateMax: %d", result);
return result;
}
result = reply.readFloat(outAppRequestRefreshRateMin);
if (result != NO_ERROR) {
ALOGE("getDesiredDisplayModeSpecs failed to read appRequestRefreshRateMin: %d", result);
return result;
}
result = reply.readFloat(outAppRequestRefreshRateMax);
if (result != NO_ERROR) {
ALOGE("getDesiredDisplayModeSpecs failed to read appRequestRefreshRateMax: %d", result);
return result;
}
return reply.readInt32();
}
status_t getDisplayBrightnessSupport(const sp<IBinder>& displayToken,
bool* outSupport) const override {
Parcel data, reply;
status_t error = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (error != NO_ERROR) {
ALOGE("getDisplayBrightnessSupport: failed to write interface token: %d", error);
return error;
}
error = data.writeStrongBinder(displayToken);
if (error != NO_ERROR) {
ALOGE("getDisplayBrightnessSupport: failed to write display token: %d", error);
return error;
}
error = remote()->transact(BnSurfaceComposer::GET_DISPLAY_BRIGHTNESS_SUPPORT, data, &reply);
if (error != NO_ERROR) {
ALOGE("getDisplayBrightnessSupport: failed to transact: %d", error);
return error;
}
bool support;
error = reply.readBool(&support);
if (error != NO_ERROR) {
ALOGE("getDisplayBrightnessSupport: failed to read support: %d", error);
return error;
}
*outSupport = support;
return NO_ERROR;
}
status_t setDisplayBrightness(const sp<IBinder>& displayToken,
const gui::DisplayBrightness& brightness) override {
Parcel data, reply;
status_t error = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (error != NO_ERROR) {
ALOGE("setDisplayBrightness: failed to write interface token: %d", error);
return error;
}
error = data.writeStrongBinder(displayToken);
if (error != NO_ERROR) {
ALOGE("setDisplayBrightness: failed to write display token: %d", error);
return error;
}
error = data.writeParcelable(brightness);
if (error != NO_ERROR) {
ALOGE("setDisplayBrightness: failed to write brightness: %d", error);
return error;
}
error = remote()->transact(BnSurfaceComposer::SET_DISPLAY_BRIGHTNESS, data, &reply);
if (error != NO_ERROR) {
ALOGE("setDisplayBrightness: failed to transact: %d", error);
return error;
}
return NO_ERROR;
}
status_t addHdrLayerInfoListener(const sp<IBinder>& displayToken,
const sp<gui::IHdrLayerInfoListener>& listener) override {
Parcel data, reply;
SAFE_PARCEL(data.writeInterfaceToken, ISurfaceComposer::getInterfaceDescriptor());
SAFE_PARCEL(data.writeStrongBinder, displayToken);
SAFE_PARCEL(data.writeStrongBinder, IInterface::asBinder(listener));
const status_t error =
remote()->transact(BnSurfaceComposer::ADD_HDR_LAYER_INFO_LISTENER, data, &reply);
if (error != OK) {
ALOGE("addHdrLayerInfoListener: Failed to transact; error = %d", error);
}
return error;
}
status_t removeHdrLayerInfoListener(const sp<IBinder>& displayToken,
const sp<gui::IHdrLayerInfoListener>& listener) override {
Parcel data, reply;
SAFE_PARCEL(data.writeInterfaceToken, ISurfaceComposer::getInterfaceDescriptor());
SAFE_PARCEL(data.writeStrongBinder, displayToken);
SAFE_PARCEL(data.writeStrongBinder, IInterface::asBinder(listener));
const status_t error =
remote()->transact(BnSurfaceComposer::REMOVE_HDR_LAYER_INFO_LISTENER, data, &reply);
if (error != OK) {
ALOGE("removeHdrLayerInfoListener: Failed to transact; error = %d", error);
}
return error;
}
status_t notifyPowerBoost(int32_t boostId) override {
Parcel data, reply;
status_t error = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (error != NO_ERROR) {
ALOGE("notifyPowerBoost: failed to write interface token: %d", error);
return error;
}
error = data.writeInt32(boostId);
if (error != NO_ERROR) {
ALOGE("notifyPowerBoost: failed to write boostId: %d", error);
return error;
}
error = remote()->transact(BnSurfaceComposer::NOTIFY_POWER_BOOST, data, &reply,
IBinder::FLAG_ONEWAY);
if (error != NO_ERROR) {
ALOGE("notifyPowerBoost: failed to transact: %d", error);
return error;
}
return NO_ERROR;
}
status_t setGlobalShadowSettings(const half4& ambientColor, const half4& spotColor,
float lightPosY, float lightPosZ, float lightRadius) override {
Parcel data, reply;
status_t error = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (error != NO_ERROR) {
ALOGE("setGlobalShadowSettings: failed to write interface token: %d", error);
return error;
}
std::vector<float> shadowConfig = {ambientColor.r, ambientColor.g, ambientColor.b,
ambientColor.a, spotColor.r, spotColor.g,
spotColor.b, spotColor.a, lightPosY,
lightPosZ, lightRadius};
error = data.writeFloatVector(shadowConfig);
if (error != NO_ERROR) {
ALOGE("setGlobalShadowSettings: failed to write shadowConfig: %d", error);
return error;
}
error = remote()->transact(BnSurfaceComposer::SET_GLOBAL_SHADOW_SETTINGS, data, &reply,
IBinder::FLAG_ONEWAY);
if (error != NO_ERROR) {
ALOGE("setGlobalShadowSettings: failed to transact: %d", error);
return error;
}
return NO_ERROR;
}
status_t setFrameRate(const sp<IGraphicBufferProducer>& surface, float frameRate,
int8_t compatibility, int8_t changeFrameRateStrategy) override {
Parcel data, reply;
SAFE_PARCEL(data.writeInterfaceToken, ISurfaceComposer::getInterfaceDescriptor());
SAFE_PARCEL(data.writeStrongBinder, IInterface::asBinder(surface));
SAFE_PARCEL(data.writeFloat, frameRate);
SAFE_PARCEL(data.writeByte, compatibility);
SAFE_PARCEL(data.writeByte, changeFrameRateStrategy);
status_t err = remote()->transact(BnSurfaceComposer::SET_FRAME_RATE, data, &reply);
if (err != NO_ERROR) {
ALOGE("setFrameRate: failed to transact: %s (%d)", strerror(-err), err);
return err;
}
return reply.readInt32();
}
status_t acquireFrameRateFlexibilityToken(sp<IBinder>* outToken) override {
if (!outToken) return BAD_VALUE;
Parcel data, reply;
status_t err = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (err != NO_ERROR) {
ALOGE("acquireFrameRateFlexibilityToken: failed writing interface token: %s (%d)",
strerror(-err), -err);
return err;
}
err = remote()->transact(BnSurfaceComposer::ACQUIRE_FRAME_RATE_FLEXIBILITY_TOKEN, data,
&reply);
if (err != NO_ERROR) {
ALOGE("acquireFrameRateFlexibilityToken: failed to transact: %s (%d)", strerror(-err),
err);
return err;
}
err = reply.readInt32();
if (err != NO_ERROR) {
ALOGE("acquireFrameRateFlexibilityToken: call failed: %s (%d)", strerror(-err), err);
return err;
}
err = reply.readStrongBinder(outToken);
if (err != NO_ERROR) {
ALOGE("acquireFrameRateFlexibilityToken: failed reading binder token: %s (%d)",
strerror(-err), err);
return err;
}
return NO_ERROR;
}
status_t setFrameTimelineInfo(const sp<IGraphicBufferProducer>& surface,
const FrameTimelineInfo& frameTimelineInfo) override {
Parcel data, reply;
status_t err = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
if (err != NO_ERROR) {
ALOGE("%s: failed writing interface token: %s (%d)", __func__, strerror(-err), -err);
return err;
}
err = data.writeStrongBinder(IInterface::asBinder(surface));
if (err != NO_ERROR) {
ALOGE("%s: failed writing strong binder: %s (%d)", __func__, strerror(-err), -err);
return err;
}
SAFE_PARCEL(frameTimelineInfo.write, data);
err = remote()->transact(BnSurfaceComposer::SET_FRAME_TIMELINE_INFO, data, &reply);
if (err != NO_ERROR) {
ALOGE("%s: failed to transact: %s (%d)", __func__, strerror(-err), err);
return err;
}
return reply.readInt32();
}
status_t addTransactionTraceListener(
const sp<gui::ITransactionTraceListener>& listener) override {
Parcel data, reply;
SAFE_PARCEL(data.writeInterfaceToken, ISurfaceComposer::getInterfaceDescriptor());
SAFE_PARCEL(data.writeStrongBinder, IInterface::asBinder(listener));
return remote()->transact(BnSurfaceComposer::ADD_TRANSACTION_TRACE_LISTENER, data, &reply);
}
/**
* Get priority of the RenderEngine in surface flinger.
*/
int getGPUContextPriority() override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
status_t err =
remote()->transact(BnSurfaceComposer::GET_GPU_CONTEXT_PRIORITY, data, &reply);
if (err != NO_ERROR) {
ALOGE("getGPUContextPriority failed to read data: %s (%d)", strerror(-err), err);
return 0;
}
return reply.readInt32();
}
status_t getMaxAcquiredBufferCount(int* buffers) const override {
Parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
status_t err =
remote()->transact(BnSurfaceComposer::GET_MAX_ACQUIRED_BUFFER_COUNT, data, &reply);
if (err != NO_ERROR) {
ALOGE("getMaxAcquiredBufferCount failed to read data: %s (%d)", strerror(-err), err);
return err;
}
return reply.readInt32(buffers);
}
};
// Out-of-line virtual method definition to trigger vtable emission in this
// translation unit (see clang warning -Wweak-vtables)
BpSurfaceComposer::~BpSurfaceComposer() {}
3.1 FWK使用案例
Android 显示刷新频率
(2.2 Code标签扩展对应调用有很多对应)
- 功能：开发者选项->显示刷新频率
- fwk代码路径：packages/apps/Settings/src/com/android/settings/development/ShowRefreshRatePreferenceController.java
- 获取SurfaceFlinger服务：
mSurfaceFlinger = ServiceManager.getService(SURFACE_FLINGER_SERVICE_KEY)- 调用方法Code Tag：
static final int SURFACE_FLINGER_CODE = 1034;- 调用方法Code Tag对应方法并传递参数data：
mSurfaceFlinger.transact(SURFACE_FLINGER_CODE, data, reply, 0 /* flags */);、mSurfaceFlinger.transact(SURFACE_FLINGER_CODE, data, null /* reply */, 0 /* flags */);SurfaceFlinger.cpp对应如下代码，enableRefreshRateOverlay(static_cast<bool>(n))方法创建RefreshRateOverlay对应Layer显示刷新频率；这里会先校验CHECK_INTERFACE(ISurfaceComposer, data, reply)即data.writeInterfaceToken(SURFACE_COMPOSER_INTERFACE_KEY);
frameworks/native/services/surfaceflinger/SurfaceFlinger.cpp
status_t SurfaceFlinger::onTransact(uint32_t code, const Parcel& data, Parcel* reply,
uint32_t flags) {
status_t credentialCheck = CheckTransactCodeCredentials(code);
if (credentialCheck != OK) {
return credentialCheck;
}
status_t err = BnSurfaceComposer::onTransact(code, data, reply, flags);
if (err == UNKNOWN_TRANSACTION || err == PERMISSION_DENIED) {
// ... ...
switch (code) {
// ... ...
case 1034: {
switch (n = data.readInt32()) {
case 0:
case 1:
enableRefreshRateOverlay(static_cast<bool>(n));
break;
default: {
Mutex::Autolock lock(mStateLock);
reply->writeBool(mRefreshRateOverlay != nullptr);
}
}
return NO_ERROR;
}
// ... ...
}
}
return err;
}
3.2 Native使用案例
目前没有找到相关defaultServiceManager()->getService(String16("SurfaceFlinger"))
