The Tor Browser: widget/gonk/libdisplay/GonkDisplay.h@fc2d59ddac77

     1 /* Copyright 2013 Mozilla Foundation and Mozilla contributors

     2  *

     3  * Licensed under the Apache License, Version 2.0 (the "License");

     4  * you may not use this file except in compliance with the License.

     5  * You may obtain a copy of the License at

     6  *

     7  *     http://www.apache.org/licenses/LICENSE-2.0

     8  *

     9  * Unless required by applicable law or agreed to in writing, software

    10  * distributed under the License is distributed on an "AS IS" BASIS,

    11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

    12  * See the License for the specific language governing permissions and

    13  * limitations under the License.

    14  */

    16 #ifndef GONKDISPLAY_H

    17 #define GONKDISPLAY_H

    19 #include <system/window.h>

    21 namespace mozilla {

    23 namespace layers {

    24 class Layer;

    25 }

    27 typedef void * EGLDisplay;

    28 typedef void * EGLSurface;

    30 class GonkDisplay {

    31 public:

    32     virtual ANativeWindow* GetNativeWindow() = 0;

    34     virtual void SetEnabled(bool enabled) = 0;

    36     typedef void (*OnEnabledCallbackType)(bool enabled);

    38     virtual void OnEnabled(OnEnabledCallbackType callback) = 0;

    40     virtual void* GetHWCDevice() = 0;

    42     virtual void* GetFBSurface() = 0;

    44     virtual bool SwapBuffers(EGLDisplay dpy, EGLSurface sur) = 0;

    46     virtual ANativeWindowBuffer* DequeueBuffer() = 0;

    48     virtual bool QueueBuffer(ANativeWindowBuffer* buf) = 0;

    50     virtual void UpdateFBSurface(EGLDisplay dpy, EGLSurface sur) = 0;

    52     /**

    53      * Set FramebufferSurface ReleaseFence's file descriptor.

    54      * ReleaseFence will be signaled after the HWC has finished reading

    55      * from a buffer.

    56      */

    57     virtual void SetFBReleaseFd(int fd) = 0;

    59     /**

    60      * Get FramebufferSurface AcquireFence's file descriptor

    61      * AcquireFence will be signaled when a buffer's content is available.

    62      */

    63     virtual int GetPrevFBAcquireFd() = 0;

    65     float xdpi;

    66     uint32_t surfaceformat;

    67 };

    69 __attribute__ ((weak))

    70 GonkDisplay* GetGonkDisplay();

    72 }

    73 #endif /* GONKDISPLAY_H */

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