mirror of
https://github.com/genodelabs/genode.git
synced 2024-12-25 00:11:07 +00:00
d880386091
This patch makes use of the recently added support for const RPC functions by turning 'Framebuffer::Session::mode()' and 'Input::Session::is_pending()' into const functions.
130 lines
3.4 KiB
C++
130 lines
3.4 KiB
C++
/*
|
|
* \brief Framebuffer session interface
|
|
* \author Norman Feske
|
|
* \date 2006-07-10
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2006-2012 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#ifndef _INCLUDE__FRAMEBUFFER_SESSION__FRAMEBUFFER_SESSION_H_
|
|
#define _INCLUDE__FRAMEBUFFER_SESSION__FRAMEBUFFER_SESSION_H_
|
|
|
|
#include <base/signal.h>
|
|
#include <dataspace/capability.h>
|
|
#include <session/session.h>
|
|
|
|
namespace Framebuffer {
|
|
|
|
/**
|
|
* Framebuffer mode info as returned by 'Framebuffer::Session::mode()'
|
|
*/
|
|
struct Mode
|
|
{
|
|
public:
|
|
|
|
/**
|
|
* Pixel formats
|
|
*/
|
|
enum Format { INVALID, RGB565 };
|
|
|
|
static Genode::size_t bytes_per_pixel(Format format)
|
|
{
|
|
if (format == RGB565) return 2;
|
|
return 0;
|
|
}
|
|
|
|
private:
|
|
|
|
int _width, _height;
|
|
Format _format;
|
|
|
|
public:
|
|
|
|
Mode() : _width(0), _height(0), _format(INVALID) { }
|
|
|
|
Mode(int width, int height, Format format)
|
|
: _width(width), _height(height), _format(format) { }
|
|
|
|
int width() const { return _width; }
|
|
int height() const { return _height; }
|
|
Format format() const { return _format; }
|
|
|
|
/**
|
|
* Return number of bytes per pixel
|
|
*/
|
|
Genode::size_t bytes_per_pixel() const {
|
|
return bytes_per_pixel(_format); }
|
|
};
|
|
|
|
|
|
struct Session : Genode::Session
|
|
{
|
|
static const char *service_name() { return "Framebuffer"; }
|
|
|
|
virtual ~Session() { }
|
|
|
|
/**
|
|
* Request dataspace representing the logical frame buffer
|
|
*/
|
|
virtual Genode::Dataspace_capability dataspace() = 0;
|
|
|
|
/**
|
|
* Release framebuffer, free dataspace
|
|
*
|
|
* By calling this function, the framebuffer client enables the server
|
|
* to reallocate the framebuffer dataspace on mode changes. Prior
|
|
* calling this function, the client should have detached the dataspace
|
|
* from its local address space.
|
|
*/
|
|
virtual void release() = 0;
|
|
|
|
/**
|
|
* Request current display-mode properties
|
|
*/
|
|
virtual Mode mode() const = 0;
|
|
|
|
/**
|
|
* Register signal handler to be notified on mode changes
|
|
*
|
|
* The framebuffer server may support changing the display mode on the
|
|
* fly. For example, a virtual framebuffer presented in a window may
|
|
* get resized according to the window dimensions. By installing a
|
|
* signal handler for mode changes, the framebuffer client can respond
|
|
* to such changes. From the client's perspective, the original mode
|
|
* stays in effect until the client calls 'release()'. After having
|
|
* released the framebuffer, the new mode can be obtained using the
|
|
* 'mode()' function and a new framebuffer dataspace can be requested
|
|
* by calling 'dataspace()'.
|
|
*/
|
|
virtual void mode_sigh(Genode::Signal_context_capability sigh) = 0;
|
|
|
|
/**
|
|
* Flush specified pixel region
|
|
*
|
|
* \param x,y,w,h region to be updated on physical frame buffer
|
|
*/
|
|
virtual void refresh(int x, int y, int w, int h) = 0;
|
|
|
|
|
|
/*********************
|
|
** RPC declaration **
|
|
*********************/
|
|
|
|
GENODE_RPC(Rpc_dataspace, Genode::Dataspace_capability, dataspace);
|
|
GENODE_RPC(Rpc_release, void, release);
|
|
GENODE_RPC(Rpc_mode, Mode, mode);
|
|
GENODE_RPC(Rpc_refresh, void, refresh, int, int, int, int);
|
|
GENODE_RPC(Rpc_mode_sigh, void, mode_sigh, Genode::Signal_context_capability);
|
|
|
|
GENODE_RPC_INTERFACE(Rpc_dataspace, Rpc_release, Rpc_mode,
|
|
Rpc_mode_sigh, Rpc_refresh);
|
|
};
|
|
}
|
|
|
|
#endif /* _INCLUDE__FRAMEBUFFER_SESSION__FRAMEBUFFER_SESSION_H_ */
|