replicant-frameworks_native/services/surfaceflinger/DisplayHardware/DisplaySurface.h
Jesse Hall 99c7dbb249 Add DisplaySurface abstraction
DisplayDevice now has a DisplaySurface instead of using
FramebufferSurface directly. FramebufferSurface implements
DisplaySurface, and so does the new VirtualDisplaySurface class.
DisplayDevice now always has a surface, not just for virtual displays.

In this change VirtualDisplaySurface is just a stub; buffers still go
directly from GLES to the final consumer.

Bug: 8384764
Change-Id: I57cb668edbc6c37bfebda90b9222d435bf589f37
2013-03-18 14:21:16 -07:00

69 lines
2.6 KiB
C++

/*
* Copyright 2013 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_SF_DISPLAY_SURFACE_H
#define ANDROID_SF_DISPLAY_SURFACE_H
#include <utils/Errors.h>
#include <utils/RefBase.h>
#include <utils/StrongPointer.h>
// ---------------------------------------------------------------------------
namespace android {
// ---------------------------------------------------------------------------
class IGraphicBufferProducer;
class String8;
class DisplaySurface : public virtual RefBase {
public:
virtual sp<IGraphicBufferProducer> getIGraphicBufferProducer() const = 0;
// Should be called when composition rendering is complete for a frame (but
// eglSwapBuffers hasn't necessarily been called). Required by certain
// older drivers for synchronization.
// TODO: Remove this when we drop support for HWC 1.0.
virtual status_t compositionComplete() = 0;
// Inform the surface that GLES composition is complete for this frame, and
// the surface should make sure that HWComposer has the correct buffer for
// this frame. Some implementations may only push a new buffer to
// HWComposer if GLES composition took place, others need to push a new
// buffer on every frame.
virtual status_t advanceFrame() = 0;
// setReleaseFenceFd stores a fence file descriptor that will signal when
// the current buffer is no longer being read. This fence will be returned
// to the producer when the current buffer is released by updateTexImage().
// Multiple fences can be set for a given buffer; they will be merged into
// a single union fence. The GLConsumer will close the file descriptor
// when finished with it.
virtual status_t setReleaseFenceFd(int fenceFd) = 0;
virtual void dump(String8& result) const = 0;
protected:
DisplaySurface() {}
virtual ~DisplaySurface() {}
};
// ---------------------------------------------------------------------------
} // namespace android
// ---------------------------------------------------------------------------
#endif // ANDROID_SF_DISPLAY_SURFACE_H