gecko-dev/widget/gonk/libdisplay/GonkDisplay.h

/* Copyright 2013 Mozilla Foundation and Mozilla contributors
 *
 * 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 GONKDISPLAY_H
#define GONKDISPLAY_H

#include <system/window.h>
#include "mozilla/Types.h"

namespace mozilla {

typedef void * EGLDisplay;
typedef void * EGLSurface;

class MOZ_EXPORT GonkDisplay {
public:
    virtual ANativeWindow* GetNativeWindow() = 0;

    virtual void SetEnabled(bool enabled) = 0;

    typedef void (*OnEnabledCallbackType)(bool enabled);

    virtual void OnEnabled(OnEnabledCallbackType callback) = 0;

    virtual void* GetHWCDevice() = 0;

    virtual void* GetDispSurface() = 0;

    /**
     * Only GonkDisplayICS uses arguments.
     */
    virtual bool SwapBuffers(EGLDisplay dpy, EGLSurface sur) = 0;

    virtual ANativeWindowBuffer* DequeueBuffer() = 0;

    virtual bool QueueBuffer(ANativeWindowBuffer* buf) = 0;

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

    /**
     * Set FramebufferSurface ReleaseFence's file descriptor.
     * ReleaseFence will be signaled after the HWC has finished reading
     * from a buffer.
     */
    virtual void SetDispReleaseFd(int fd) = 0;

    /**
     * Get FramebufferSurface AcquireFence's file descriptor
     * AcquireFence will be signaled when a buffer's content is available.
     */
    virtual int GetPrevDispAcquireFd() = 0;

    float xdpi;
    int32_t surfaceformat;
};

MOZ_EXPORT __attribute__ ((weak))
GonkDisplay* GetGonkDisplay();

}
#endif /* GONKDISPLAY_H */