genode/repos/os/include/audio_in_session/rpc_object.h
2017-02-28 12:59:29 +01:00

109 lines
2.5 KiB
C++

/*
* \brief Server-side Audio_in session interface
* \author Josef Soentgen
* \date 2015-05-08
*/
/*
* Copyright (C) 2015-2017 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__AUDIO_IN_SESSION__RPC_OBJECT_H_
#define _INCLUDE__AUDIO_IN_SESSION__RPC_OBJECT_H_
/* Genode includes */
#include <base/env.h>
#include <base/rpc_server.h>
#include <base/attached_ram_dataspace.h>
#include <audio_in_session/audio_in_session.h>
namespace Audio_in { class Session_rpc_object; }
class Audio_in::Session_rpc_object : public Genode::Rpc_object<Audio_in::Session,
Session_rpc_object>
{
protected:
Genode::Attached_ram_dataspace _ds; /* contains Audio_in stream */
Genode::Signal_context_capability _data_cap;
Genode::Signal_context_capability _progress_cap;
Genode::Signal_context_capability _overrun_cap;
bool _stopped; /* state */
public:
Session_rpc_object(Genode::Env &env, Genode::Signal_context_capability data_cap)
:
_ds(env.ram(), env.rm(), sizeof(Stream)),
_data_cap(data_cap), _stopped(true)
{
_stream = _ds.local_addr<Stream>();
}
/**************
** Signals **
**************/
void progress_sigh(Genode::Signal_context_capability sigh) {
_progress_cap = sigh; }
void overrun_sigh(Genode::Signal_context_capability sigh) {
_overrun_cap = sigh; }
Genode::Signal_context_capability data_avail_sigh() {
return _data_cap; }
/***********************
** Session interface **
***********************/
void start() { _stopped = false; }
void stop() { _stopped = true; }
Genode::Dataspace_capability dataspace() { return _ds.cap(); }
/**********************************
** Session interface extensions **
**********************************/
/**
* Send 'progress' signal
*/
void progress_submit()
{
if (_progress_cap.valid())
Genode::Signal_transmitter(_progress_cap).submit();
}
/**
* Send 'overrun' signal
*/
void overrun_submit()
{
if (_overrun_cap.valid())
Genode::Signal_transmitter(_overrun_cap).submit();
}
/**
* Return true if client state is stopped
*/
bool stopped() const { return _stopped; }
/**
* Return true if client session is active
*/
bool active() const { return !_stopped; }
};
#endif /* _INCLUDE__AUDIO_IN_SESSION__RPC_OBJECT_H_ */