The Tor Browser: comparison widget/gonk/nativewindow/IGonkGraphicBufferConsumer.h

--1:000000000000
+:c174367354f9
+/*
+* Copyright (C) 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_GUI_IGONKGRAPHICBUFFERCONSUMER_H
+#define ANDROID_GUI_IGONKGRAPHICBUFFERCONSUMER_H
+#include <stdint.h>
+#include <sys/types.h>
+#include <utils/Errors.h>
+#include <utils/RefBase.h>
+#include <utils/Timers.h>
+#include <binder/IInterface.h>
+#include <ui/Rect.h>
+#include "mozilla/layers/LayersSurfaces.h"
+namespace mozilla {
+namespace layers {
+class TextureClient;
+}
+}
+namespace android {
+// ----------------------------------------------------------------------------
+class IConsumerListener;
+class GraphicBuffer;
+class Fence;
+class IGonkGraphicBufferConsumer : public IInterface {
+typedef mozilla::layers::TextureClient TextureClient;
+public:
+// public facing structure for BufferSlot
+class BufferItem : public Flattenable<BufferItem> {
+friend class Flattenable<BufferItem>;
+size_t getPodSize() const;
+size_t getFlattenedSize() const;
+size_t getFdCount() const;
+status_t flatten(void*& buffer, size_t& size, int*& fds, size_t& count) const;
+status_t unflatten(void const*& buffer, size_t& size, int const*& fds, size_t& count);
+public:
+enum { INVALID_BUFFER_SLOT = -1 };
+BufferItem();
+// mGraphicBuffer points to the buffer allocated for this slot, or is NULL
+// if the buffer in this slot has been acquired in the past (see
+// BufferSlot.mAcquireCalled).
+sp<GraphicBuffer> mGraphicBuffer;
+// mFence is a fence that will signal when the buffer is idle.
+sp<Fence> mFence;
+// mCrop is the current crop rectangle for this buffer slot.
+Rect mCrop;
+// mTransform is the current transform flags for this buffer slot.
+uint32_t mTransform;
+// mScalingMode is the current scaling mode for this buffer slot.
+uint32_t mScalingMode;
+// mTimestamp is the current timestamp for this buffer slot. This gets
+// to set by queueBuffer each time this slot is queued.
+int64_t mTimestamp;
+// mIsAutoTimestamp indicates whether mTimestamp was generated
+// automatically when the buffer was queued.
+bool mIsAutoTimestamp;
+// mFrameNumber is the number of the queued frame for this slot.
+uint64_t mFrameNumber;
+// mBuf is the slot index of this buffer
+int mBuf;
+// mIsDroppable whether this buffer was queued with the
+// property that it can be replaced by a new buffer for the purpose of
+// making sure dequeueBuffer() won't block.
+// i.e.: was the BufferQueue in "mDequeueBufferCannotBlock" when this buffer
+// was queued.
+bool mIsDroppable;
+// Indicates whether this buffer has been seen by a consumer yet
+bool mAcquireCalled;
+// Indicates this buffer must be transformed by the inverse transform of the screen
+// it is displayed onto. This is applied after mTransform.
+bool mTransformToDisplayInverse;
+};
+// acquireBuffer attempts to acquire ownership of the next pending buffer in
+// the BufferQueue.  If no buffer is pending then it returns -EINVAL.  If a
+// buffer is successfully acquired, the information about the buffer is
+// returned in BufferItem.  If the buffer returned had previously been
+// acquired then the BufferItem::mGraphicBuffer field of buffer is set to
+// NULL and it is assumed that the consumer still holds a reference to the
+// buffer.
+//
+// If presentWhen is nonzero, it indicates the time when the buffer will
+// be displayed on screen.  If the buffer's timestamp is farther in the
+// future, the buffer won't be acquired, and PRESENT_LATER will be
+// returned.  The presentation time is in nanoseconds, and the time base
+// is CLOCK_MONOTONIC.
+virtual status_t acquireBuffer(BufferItem *buffer, nsecs_t presentWhen) = 0;
+// releaseBuffer releases a buffer slot from the consumer back to the
+// BufferQueue.  This may be done while the buffer's contents are still
+// being accessed.  The fence will signal when the buffer is no longer
+// in use. frameNumber is used to indentify the exact buffer returned.
+//
+// If releaseBuffer returns STALE_BUFFER_SLOT, then the consumer must free
+// any references to the just-released buffer that it might have, as if it
+// had received a onBuffersReleased() call with a mask set for the released
+// buffer.
+//
+// Note that the dependencies on EGL will be removed once we switch to using
+// the Android HW Sync HAL.
+virtual status_t releaseBuffer(int buf, uint64_t frameNumber, const sp<Fence>& releaseFence) = 0;
+// consumerConnect connects a consumer to the BufferQueue.  Only one
+// consumer may be connected, and when that consumer disconnects the
+// BufferQueue is placed into the "abandoned" state, causing most
+// interactions with the BufferQueue by the producer to fail.
+// controlledByApp indicates whether the consumer is controlled by
+// the application.
+//
+// consumer may not be NULL.
+virtual status_t consumerConnect(const sp<IConsumerListener>& consumer, bool controlledByApp) = 0;
+// consumerDisconnect disconnects a consumer from the BufferQueue. All
+// buffers will be freed and the BufferQueue is placed in the "abandoned"
+// state, causing most interactions with the BufferQueue by the producer to
+// fail.
+virtual status_t consumerDisconnect() = 0;
+// getReleasedBuffers sets the value pointed to by slotMask to a bit mask
+// indicating which buffer slots have been released by the BufferQueue
+// but have not yet been released by the consumer.
+//
+// This should be called from the onBuffersReleased() callback.
+virtual status_t getReleasedBuffers(uint32_t* slotMask) = 0;
+// setDefaultBufferSize is used to set the size of buffers returned by
+// dequeueBuffer when a width and height of zero is requested.  Default
+// is 1x1.
+virtual status_t setDefaultBufferSize(uint32_t w, uint32_t h) = 0;
+// setDefaultMaxBufferCount sets the default value for the maximum buffer
+// count (the initial default is 2). If the producer has requested a
+// buffer count using setBufferCount, the default buffer count will only
+// take effect if the producer sets the count back to zero.
+//
+// The count must be between 2 and NUM_BUFFER_SLOTS, inclusive.
+virtual status_t setDefaultMaxBufferCount(int bufferCount) = 0;
+// disableAsyncBuffer disables the extra buffer used in async mode
+// (when both producer and consumer have set their "isControlledByApp"
+// flag) and has dequeueBuffer() return WOULD_BLOCK instead.
+//
+// This can only be called before consumerConnect().
+virtual status_t disableAsyncBuffer() = 0;
+// setMaxAcquiredBufferCount sets the maximum number of buffers that can
+// be acquired by the consumer at one time (default 1).  This call will
+// fail if a producer is connected to the BufferQueue.
+virtual status_t setMaxAcquiredBufferCount(int maxAcquiredBuffers) = 0;
+// setConsumerName sets the name used in logging
+virtual void setConsumerName(const String8& name) = 0;
+// setDefaultBufferFormat allows the BufferQueue to create
+// GraphicBuffers of a defaultFormat if no format is specified
+// in dequeueBuffer.  Formats are enumerated in graphics.h; the
+// initial default is HAL_PIXEL_FORMAT_RGBA_8888.
+virtual status_t setDefaultBufferFormat(uint32_t defaultFormat) = 0;
+// setConsumerUsageBits will turn on additional usage bits for dequeueBuffer.
+// These are merged with the bits passed to dequeueBuffer.  The values are
+// enumerated in gralloc.h, e.g. GRALLOC_USAGE_HW_RENDER; the default is 0.
+virtual status_t setConsumerUsageBits(uint32_t usage) = 0;
+// setTransformHint bakes in rotation to buffers so overlays can be used.
+// The values are enumerated in window.h, e.g.
+// NATIVE_WINDOW_TRANSFORM_ROT_90.  The default is 0 (no transform).
+virtual status_t setTransformHint(uint32_t hint) = 0;
+// dump state into a string
+virtual void dump(String8& result, const char* prefix) const = 0;
+public:
+DECLARE_META_INTERFACE(GonkGraphicBufferConsumer);
+};
+// ----------------------------------------------------------------------------
+class BnGonkGraphicBufferConsumer : public BnInterface<IGonkGraphicBufferConsumer>
+{
+public:
+virtual status_t    onTransact( uint32_t code,
+const Parcel& data,
+Parcel* reply,
+uint32_t flags = 0);
+};
+// ----------------------------------------------------------------------------
+}; // namespace android
+#endif // ANDROID_GUI_IGRAPHICBUFFERCONSUMER_H

The Tor Browser / file comparison

comparison: widget/gonk/nativewindow/IGonkGraphicBufferConsumer.h

widget/gonk/nativewindow/IGonkGraphicBufferConsumer.h