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include/server/mir/compositor/buffer_stream.h

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/*

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 * Copyright © 2012-2014 Canonical Ltd.

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 *

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 * This program is free software: you can redistribute it and/or modify it

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 * under the terms of the GNU General Public License version 3,

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 * as published by the Free Software Foundation.

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 *

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 * This program is distributed in the hope that it will be useful,

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 * but WITHOUT ANY WARRANTY; without even the implied warranty of

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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

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 * GNU General Public License for more details.

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 *

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 * You should have received a copy of the GNU General Public License

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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

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 *

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 * Authored by:

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 * Kevin DuBois <kevin.dubois@canonical.com>

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 */

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#ifndef MIR_COMPOSITOR_BUFFER_STREAM_H_

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#define MIR_COMPOSITOR_BUFFER_STREAM_H_

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#include "mir/geometry/size.h"

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#include "mir_toolkit/common.h"

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#include "mir/graphics/buffer_id.h"

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#include <memory>

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namespace mir

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{

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namespace graphics

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{

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class Buffer;

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}

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namespace compositor

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{

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class BufferStream

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{

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public:

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    virtual ~BufferStream() = default;

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    virtual void acquire_client_buffer(

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        std::function<void(graphics::Buffer* buffer)> complete) = 0;

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    virtual void release_client_buffer(graphics::Buffer* buf) = 0;

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    virtual std::shared_ptr<graphics::Buffer>

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        lock_compositor_buffer(void const* user_id) = 0;

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    virtual std::shared_ptr<graphics::Buffer> lock_snapshot_buffer() = 0;

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    virtual MirPixelFormat get_stream_pixel_format() = 0;

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    virtual geometry::Size stream_size() = 0;

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    virtual void resize(geometry::Size const& size) = 0;

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    virtual void allow_framedropping(bool) = 0;

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    virtual void force_requests_to_complete() = 0;

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    virtual int buffers_ready_for_compositor() const = 0;

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    virtual void drop_old_buffers() = 0;

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};

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}

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}

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#endif /* MIR_COMPOSITOR_BUFFER_STREAM_H_ */

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