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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef REMOTING_CLIENT_FRAME_PRODUCER_H_
#define REMOTING_CLIENT_FRAME_PRODUCER_H_
#include "base/callback_forward.h"
#include "third_party/skia/include/core/SkRect.h"
#include "third_party/skia/include/core/SkRegion.h"
#include "third_party/skia/include/core/SkSize.h"
namespace pp {
class ImageData;
} // namespace pp
namespace remoting {
class FrameProducer {
public:
FrameProducer() {}
// Adds an image buffer to the pool of pending buffers for subsequent drawing.
// Once drawing is completed the buffer will be returned to the consumer via
// the FrameConsumer::ApplyBuffer() call. Alternatively an empty buffer could
// be returned via the FrameConsumer::ReturnBuffer() call.
//
// The passed buffer must be large enough to hold the whole clipping area.
virtual void DrawBuffer(pp::ImageData* buffer) = 0;
// Requests repainting of the specified |region| of the frame as soon as
// possible. |region| is specified in output coordinates relative to
// the beginning of the frame.
virtual void InvalidateRegion(const SkRegion& region) = 0;
// Requests returing of all pending buffers to the consumer via
// FrameConsumer::ReturnBuffer() calls.
virtual void RequestReturnBuffers(const base::Closure& done) = 0;
// Notifies the producer of changes to the output view size or clipping area.
// Implementations must cope with empty |view_size| or |clip_area|.
virtual void SetOutputSizeAndClip(const SkISize& view_size,
const SkIRect& clip_area) = 0;
protected:
virtual ~FrameProducer() {}
private:
DISALLOW_COPY_AND_ASSIGN(FrameProducer);
};
} // namespace remoting
#endif // REMOTING_CLIENT_FRAME_PRODUCER_H_
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