mirror of
https://github.com/genodelabs/genode.git
synced 2024-12-22 15:02:25 +00:00
c1b981ede4
The new 'CAP_QUOTA' enum value denotes the capability quota to be transferred from the client to the server at session-creation time. Issue #2398
98 lines
2.7 KiB
C++
98 lines
2.7 KiB
C++
/*
|
|
* \brief Connection to frame-buffer service
|
|
* \author Norman Feske
|
|
* \date 2008-08-22
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2008-2017 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU Affero General Public License version 3.
|
|
*/
|
|
|
|
#ifndef _INCLUDE__FRAMEBUFFER_SESSION__CONNECTION_H_
|
|
#define _INCLUDE__FRAMEBUFFER_SESSION__CONNECTION_H_
|
|
|
|
#include <framebuffer_session/client.h>
|
|
#include <util/arg_string.h>
|
|
#include <base/connection.h>
|
|
|
|
namespace Framebuffer { class Connection; }
|
|
|
|
|
|
class Framebuffer::Connection : public Genode::Connection<Session>,
|
|
public Session_client
|
|
{
|
|
public:
|
|
|
|
enum { RAM_QUOTA = 8*1024UL };
|
|
|
|
private:
|
|
|
|
/**
|
|
* Create session and return typed session capability
|
|
*/
|
|
Session_capability _connect(Genode::Parent &parent,
|
|
unsigned width, unsigned height,
|
|
Mode::Format format)
|
|
{
|
|
using namespace Genode;
|
|
|
|
enum { ARGBUF_SIZE = 128 };
|
|
char argbuf[ARGBUF_SIZE];
|
|
argbuf[0] = 0;
|
|
|
|
/* donate ram and cap quota for storing server-side meta data */
|
|
Arg_string::set_arg(argbuf, sizeof(argbuf), "ram_quota", RAM_QUOTA);
|
|
Arg_string::set_arg(argbuf, sizeof(argbuf), "cap_quota", CAP_QUOTA);
|
|
|
|
/* set optional session-constructor arguments */
|
|
if (width)
|
|
Arg_string::set_arg(argbuf, sizeof(argbuf), "fb_width", width);
|
|
if (height)
|
|
Arg_string::set_arg(argbuf, sizeof(argbuf), "fb_height", height);
|
|
if (format != Mode::INVALID)
|
|
Arg_string::set_arg(argbuf, sizeof(argbuf), "fb_format", format);
|
|
|
|
return session(parent, argbuf);
|
|
}
|
|
|
|
public:
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* \param mode desired size and pixel format
|
|
*
|
|
* The specified values are not enforced. After creating the
|
|
* session, you should validate the actual frame-buffer attributes
|
|
* by calling the 'info' method of the frame-buffer interface.
|
|
*/
|
|
Connection(Genode::Env &env, Framebuffer::Mode mode)
|
|
:
|
|
Genode::Connection<Session>(env, _connect(env.parent(),
|
|
mode.width(), mode.height(),
|
|
mode.format())),
|
|
Session_client(cap())
|
|
{ }
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* \noapi
|
|
* \deprecated Use the constructor with 'Env &' as first
|
|
* argument instead
|
|
*/
|
|
Connection(unsigned width = 0,
|
|
unsigned height = 0,
|
|
Mode::Format format = Mode::INVALID) __attribute__((deprecated))
|
|
:
|
|
Genode::Connection<Session>(_connect(*Genode::env_deprecated()->parent(),
|
|
width, height, format)),
|
|
Session_client(cap())
|
|
{ }
|
|
};
|
|
|
|
#endif /* _INCLUDE__FRAMEBUFFER_SESSION__CONNECTION_H_ */
|