diff options
Diffstat (limited to 'include/gui')
| -rw-r--r-- | include/gui/BitTube.h (renamed from include/gui/SensorChannel.h) | 9 | ||||
| -rw-r--r-- | include/gui/DisplayEventReceiver.h | 123 | ||||
| -rw-r--r-- | include/gui/IDisplayEventConnection.h | 73 | ||||
| -rw-r--r-- | include/gui/ISensorEventConnection.h | 4 | ||||
| -rw-r--r-- | include/gui/SensorEventQueue.h | 4 |
5 files changed, 205 insertions, 8 deletions
diff --git a/include/gui/SensorChannel.h b/include/gui/BitTube.h index bb54618..76389a0 100644 --- a/include/gui/SensorChannel.h +++ b/include/gui/BitTube.h @@ -28,14 +28,15 @@ namespace android { // ---------------------------------------------------------------------------- class Parcel; -class SensorChannel : public RefBase +class BitTube : public RefBase { public: - SensorChannel(); - SensorChannel(const Parcel& data); - virtual ~SensorChannel(); + BitTube(); + BitTube(const Parcel& data); + virtual ~BitTube(); + status_t initCheck() const; int getFd() const; ssize_t write(void const* vaddr, size_t size); ssize_t read(void* vaddr, size_t size); diff --git a/include/gui/DisplayEventReceiver.h b/include/gui/DisplayEventReceiver.h new file mode 100644 index 0000000..7bca8d6 --- /dev/null +++ b/include/gui/DisplayEventReceiver.h @@ -0,0 +1,123 @@ +/* + * Copyright (C) 2011 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef ANDROID_GUI_DISPLAY_EVENT_H +#define ANDROID_GUI_DISPLAY_EVENT_H + +#include <stdint.h> +#include <sys/types.h> + +#include <utils/Errors.h> +#include <utils/RefBase.h> +#include <utils/Timers.h> + +#include <binder/IInterface.h> + +// ---------------------------------------------------------------------------- + +namespace android { + +// ---------------------------------------------------------------------------- + +class BitTube; +class IDisplayEventConnection; + +// ---------------------------------------------------------------------------- + +class DisplayEventReceiver { +public: + enum { + DISPLAY_EVENT_VSYNC = 'vsyn' + }; + + struct Event { + + struct Header { + uint32_t type; + nsecs_t timestamp; + }; + + struct VSync { + uint32_t count; + }; + + Header header; + union { + VSync vsync; + }; + }; + +public: + /* + * DisplayEventReceiver creates and registers an event connection with + * SurfaceFlinger. VSync events are disabled by default. Call setVSyncRate + * or requestNextVsync to receive them. + * Other events start being delivered immediately. + */ + DisplayEventReceiver(); + + /* + * ~DisplayEventReceiver severs the connection with SurfaceFlinger, new events + * stop being delivered immediately. Note that the queue could have + * some events pending. These will be delivered. + */ + ~DisplayEventReceiver(); + + /* + * initCheck returns the state of DisplayEventReceiver after construction. + */ + status_t initCheck() const; + + /* + * getFd returns the file descriptor to use to receive events. + * OWNERSHIP IS RETAINED by DisplayEventReceiver. DO NOT CLOSE this + * file-descriptor. + */ + int getFd() const; + + /* + * getEvents reads event from the queue and returns how many events were + * read. Returns 0 if there are no more events or a negative error code. + * If NOT_ENOUGH_DATA is returned, the object has become invalid forever, it + * should be destroyed and getEvents() shouldn't be called again. + */ + ssize_t getEvents(Event* events, size_t count); + static ssize_t getEvents(const sp<BitTube>& dataChannel, + Event* events, size_t count); + + /* + * setVsyncRate() sets the Event::VSync delivery rate. A value of + * 1 returns every Event::VSync. A value of 2 returns every other event, + * etc... a value of 0 returns no event unless requestNextVsync() has + * been called. + */ + status_t setVsyncRate(uint32_t count); + + /* + * requestNextVsync() schedules the next Event::VSync. It has no effect + * if the vsync rate is > 0. + */ + status_t requestNextVsync(); + +private: + sp<IDisplayEventConnection> mEventConnection; + sp<BitTube> mDataChannel; +}; + +// ---------------------------------------------------------------------------- +}; // namespace android + +#endif // ANDROID_GUI_DISPLAY_EVENT_H diff --git a/include/gui/IDisplayEventConnection.h b/include/gui/IDisplayEventConnection.h new file mode 100644 index 0000000..86247de --- /dev/null +++ b/include/gui/IDisplayEventConnection.h @@ -0,0 +1,73 @@ +/* + * Copyright (C) 2011 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef ANDROID_GUI_IDISPLAY_EVENT_CONNECTION_H +#define ANDROID_GUI_IDISPLAY_EVENT_CONNECTION_H + +#include <stdint.h> +#include <sys/types.h> + +#include <utils/Errors.h> +#include <utils/RefBase.h> + +#include <binder/IInterface.h> + +namespace android { +// ---------------------------------------------------------------------------- + +class BitTube; + +class IDisplayEventConnection : public IInterface +{ +public: + + DECLARE_META_INTERFACE(DisplayEventConnection); + + /* + * getDataChannel() returns a BitTube where to receive the events from + */ + virtual sp<BitTube> getDataChannel() const = 0; + + /* + * setVsyncRate() sets the vsync event delivery rate. A value of + * 1 returns every vsync events. A value of 2 returns every other events, + * etc... a value of 0 returns no event unless requestNextVsync() has + * been called. + */ + virtual void setVsyncRate(uint32_t count) = 0; + + /* + * requestNextVsync() schedules the next vsync event. It has no effect + * if the vsync rate is > 0. + */ + virtual void requestNextVsync() = 0; // asynchronous +}; + +// ---------------------------------------------------------------------------- + +class BnDisplayEventConnection : public BnInterface<IDisplayEventConnection> +{ +public: + virtual status_t onTransact( uint32_t code, + const Parcel& data, + Parcel* reply, + uint32_t flags = 0); +}; + +// ---------------------------------------------------------------------------- +}; // namespace android + +#endif // ANDROID_GUI_IDISPLAY_EVENT_CONNECTION_H diff --git a/include/gui/ISensorEventConnection.h b/include/gui/ISensorEventConnection.h index ed4e4cc..749065e 100644 --- a/include/gui/ISensorEventConnection.h +++ b/include/gui/ISensorEventConnection.h @@ -28,14 +28,14 @@ namespace android { // ---------------------------------------------------------------------------- -class SensorChannel; +class BitTube; class ISensorEventConnection : public IInterface { public: DECLARE_META_INTERFACE(SensorEventConnection); - virtual sp<SensorChannel> getSensorChannel() const = 0; + virtual sp<BitTube> getSensorChannel() const = 0; virtual status_t enableDisable(int handle, bool enabled) = 0; virtual status_t setEventRate(int handle, nsecs_t ns) = 0; }; diff --git a/include/gui/SensorEventQueue.h b/include/gui/SensorEventQueue.h index 97dd391..ef7c6e3 100644 --- a/include/gui/SensorEventQueue.h +++ b/include/gui/SensorEventQueue.h @@ -24,7 +24,7 @@ #include <utils/RefBase.h> #include <utils/Timers.h> -#include <gui/SensorChannel.h> +#include <gui/BitTube.h> // ---------------------------------------------------------------------------- @@ -71,7 +71,7 @@ public: private: sp<Looper> getLooper() const; sp<ISensorEventConnection> mSensorEventConnection; - sp<SensorChannel> mSensorChannel; + sp<BitTube> mSensorChannel; mutable Mutex mLock; mutable sp<Looper> mLooper; }; |