genode/repos/os/include/audio_out_session/connection.h
2017-01-13 13:07:10 +01:00

73 lines
2.1 KiB
C++

/*
* \brief Connection to audio service
* \author Sebastian Sumpf
* \date 2012-12-20
*/
/*
* Copyright (C) 2012-2013 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__AUDIO_OUT_SESSION__CONNECTION_H_
#define _INCLUDE__AUDIO_OUT_SESSION__CONNECTION_H_
#include <audio_out_session/client.h>
#include <base/connection.h>
#include <base/allocator.h>
namespace Audio_out { struct Connection; }
struct Audio_out::Connection : Genode::Connection<Session>, Audio_out::Session_client
{
/**
* Issue session request
*
* \noapi
*/
Capability<Audio_out::Session> _session(Genode::Parent &parent, char const *channel)
{
return session(parent, "ram_quota=%ld, channel=\"%s\"",
2*4096 + sizeof(Stream), channel);
}
/**
* Constructor
*
* \param channel channel identifier (e.g., "front left")
* \param alloc_signal install 'alloc_signal', the client may then use
* 'wait_for_alloc' when the stream is full
* \param progress_signal install progress signal, the client may then
* call 'wait_for_progress', which is sent when the
* server processed one or more packets
*/
Connection(Genode::Env &env,
char const *channel,
bool alloc_signal = true,
bool progress_signal = false)
:
Genode::Connection<Session>(env, _session(env.parent(), channel)),
Session_client(env.rm(), cap(), alloc_signal, progress_signal)
{ }
/**
* Constructor
*
* \noapi
* \deprecated Use the constructor with 'Env &' as first
* argument instead
*/
Connection(const char *channel,
bool alloc_signal = true,
bool progress_signal = false)
:
Genode::Connection<Session>(_session(*Genode::env()->parent(), channel)),
Session_client(*Genode::env()->rm_session(), cap(), alloc_signal, progress_signal)
{ }
};
#endif /* _INCLUDE__AUDIO_OUT_SESSION__CONNECTION_H_ */