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/*
* Copyright (C) 2012 The Android Open Source Project
* Copyright (C) 2013 Mozilla Foundation
*
* 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 NATIVEWINDOW_GONKNATIVEWINDOW_JB_H
#define NATIVEWINDOW_GONKNATIVEWINDOW_JB_H
#include <ui/GraphicBuffer.h>
#include <utils/String8.h>
#include <utils/Vector.h>
#include <utils/threads.h>
#include "GonkConsumerBaseJB.h"
#include "GrallocImages.h"
#include "mozilla/layers/LayersSurfaces.h"
namespace mozilla {
namespace layers {
class PGrallocBufferChild;
}
}
namespace android {
// The user of GonkNativeWindow who wants to receive notification of
// new frames should implement this interface.
class GonkNativeWindowNewFrameCallback {
public:
virtual void OnNewFrame() = 0;
};
/**
* GonkNativeWindow is a GonkBufferQueue consumer endpoint that allows clients
* access to the whole BufferItem entry from GonkBufferQueue. Multiple buffers may
* be acquired at once, to be used concurrently by the client. This consumer can
* operate either in synchronous or asynchronous mode.
*/
class GonkNativeWindow: public GonkConsumerBase
{
typedef mozilla::layers::TextureClient TextureClient;
public:
typedef GonkConsumerBase::FrameAvailableListener FrameAvailableListener;
typedef GonkBufferQueue::BufferItem BufferItem;
enum { INVALID_BUFFER_SLOT = GonkBufferQueue::INVALID_BUFFER_SLOT };
enum { NO_BUFFER_AVAILABLE = GonkBufferQueue::NO_BUFFER_AVAILABLE };
// Create a new buffer item consumer. The consumerUsage parameter determines
// the consumer usage flags passed to the graphics allocator. The
// bufferCount parameter specifies how many buffers can be locked for user
// access at the same time.
GonkNativeWindow(int bufferCount = GonkBufferQueue::MIN_UNDEQUEUED_BUFFERS);
virtual ~GonkNativeWindow();
// set the name of the GonkNativeWindow that will be used to identify it in
// log messages.
void setName(const String8& name);
// Gets the next graphics buffer from the producer, filling out the
// passed-in BufferItem structure. Returns NO_BUFFER_AVAILABLE if the queue
// of buffers is empty, and INVALID_OPERATION if the maximum number of
// buffers is already acquired.
//
// Only a fixed number of buffers can be acquired at a time, determined by
// the construction-time bufferCount parameter. If INVALID_OPERATION is
// returned by acquireBuffer, then old buffers must be returned to the
// queue by calling releaseBuffer before more buffers can be acquired.
//
// If waitForFence is true, and the acquired BufferItem has a valid fence object,
// acquireBuffer will wait on the fence with no timeout before returning.
#if ANDROID_VERSION >= 18
status_t acquireBuffer(BufferItem *item, bool waitForFence = true);
#endif
// Returns an acquired buffer to the queue, allowing it to be reused. Since
// only a fixed number of buffers may be acquired at a time, old buffers
// must be released by calling releaseBuffer to ensure new buffers can be
// acquired by acquireBuffer. Once a BufferItem is released, the caller must
// not access any members of the BufferItem, and should immediately remove
// all of its references to the BufferItem itself.
#if ANDROID_VERSION >= 18
status_t releaseBuffer(const BufferItem &item,
const sp<Fence>& releaseFence = Fence::NO_FENCE);
#endif
sp<IGraphicBufferProducer> getProducerInterface() const { return getBufferQueue(); }
// setDefaultBufferSize is used to set the size of buffers returned by
// requestBuffers when a with and height of zero is requested.
status_t setDefaultBufferSize(uint32_t w, uint32_t h);
// setDefaultBufferFormat allows the BufferQueue to create
// GraphicBuffers of a defaultFormat if no format is specified
// in dequeueBuffer
status_t setDefaultBufferFormat(uint32_t defaultFormat);
// Get next frame from the queue, caller owns the returned buffer.
already_AddRefed<TextureClient> getCurrentBuffer();
// Return the buffer to the queue and mark it as FREE. After that
// the buffer is useable again for the decoder.
void returnBuffer(TextureClient* client);
already_AddRefed<TextureClient> getTextureClientFromBuffer(ANativeWindowBuffer* buffer);
void setNewFrameCallback(GonkNativeWindowNewFrameCallback* callback);
static void RecycleCallback(TextureClient* client, void* closure);
protected:
virtual void onFrameAvailable();
private:
GonkNativeWindowNewFrameCallback* mNewFrameCallback;
};
} // namespace android
#endif // NATIVEWINDOW_GONKNATIVEWINDOW_JB_H
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