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-rw-r--r--widget/gonk/libdisplay/DisplaySurface.h112
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diff --git a/widget/gonk/libdisplay/DisplaySurface.h b/widget/gonk/libdisplay/DisplaySurface.h
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--- a/widget/gonk/libdisplay/DisplaySurface.h
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-/*
- * 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 <gui/ConsumerBase.h>
-#include <system/window.h>
-#include <utils/Errors.h>
-#include <utils/RefBase.h>
-#include <utils/StrongPointer.h>
-
-// ---------------------------------------------------------------------------
-namespace android {
-// ---------------------------------------------------------------------------
-
-class IGraphicBufferProducer;
-class String8;
-
-#if ANDROID_VERSION >= 21
-typedef IGraphicBufferConsumer StreamConsumer;
-#else
-typedef BufferQueue StreamConsumer;
-#endif
-
-class DisplaySurface : public ConsumerBase {
-public:
- // beginFrame is called at the beginning of the composition loop, before
- // the configuration is known. The DisplaySurface should do anything it
- // needs to do to enable HWComposer to decide how to compose the frame.
- // We pass in mustRecompose so we can keep VirtualDisplaySurface's state
- // machine happy without actually queueing a buffer if nothing has changed.
- virtual status_t beginFrame(bool mustRecompose) = 0;
-
- // prepareFrame is called after the composition configuration is known but
- // before composition takes place. The DisplaySurface can use the
- // composition type to decide how to manage the flow of buffers between
- // GLES and HWC for this frame.
- enum CompositionType {
- COMPOSITION_UNKNOWN = 0,
- COMPOSITION_GLES = 1,
- COMPOSITION_HWC = 2,
- COMPOSITION_MIXED = COMPOSITION_GLES | COMPOSITION_HWC
- };
- virtual status_t prepareFrame(CompositionType compositionType) = 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.
- //
- // advanceFrame must be followed by a call to onFrameCommitted before
- // advanceFrame may be called again.
- virtual status_t advanceFrame() = 0;
-
- // onFrameCommitted is called after the frame has been committed to the
- // hardware composer. The surface collects the release fence for this
- // frame's buffer.
- virtual void onFrameCommitted() = 0;
-
- virtual void resizeBuffers(const uint32_t w, const uint32_t h) = 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 SurfaceTexture will close the file descriptor
- // when finished with it.
- virtual status_t setReleaseFenceFd(int fenceFd) = 0;
-
- virtual int GetPrevDispAcquireFd() = 0;
-
- buffer_handle_t lastHandle;
-
-protected:
- DisplaySurface(const sp<StreamConsumer>& sc)
-#if ANDROID_VERSION >= 19
- : ConsumerBase(sc, true)
-#else
- : ConsumerBase(sc)
-#endif
- , lastHandle(0)
- { }
- virtual ~DisplaySurface() {}
-};
-
-// ---------------------------------------------------------------------------
-} // namespace android
-// ---------------------------------------------------------------------------
-
-#endif // ANDROID_SF_DISPLAY_SURFACE_H
-