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126 lines
2.7 KiB
C++
126 lines
2.7 KiB
C++
/*
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* \brief Server-side audio-session interface
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* \author Sebastian Sumpf
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* \date 2012-12-10
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*/
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/*
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* Copyright (C) 2012-2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _INCLUDE__AUDIO_OUT_SESSION__RPC_OBJECT_H_
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#define _INCLUDE__AUDIO_OUT_SESSION__RPC_OBJECT_H_
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#include <base/env.h>
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#include <base/rpc_server.h>
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#include <audio_out_session/audio_out_session.h>
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namespace Audio_out {
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class Session_rpc_object;
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}
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class Audio_out::Session_rpc_object : public Genode::Rpc_object<Audio_out::Session,
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Session_rpc_object>
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{
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protected:
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bool _stopped; /* state */
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Genode::Ram_dataspace_capability _ds; /* contains Audio_out_stream */
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Genode::Signal_transmitter _progress;
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Genode::Signal_transmitter _alloc;
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Genode::Signal_context_capability _data_cap;
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bool _progress_sigh; /* progress signal on/off */
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bool _alloc_sigh; /* alloc signal on/off */
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public:
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Session_rpc_object(Genode::Signal_context_capability data_cap)
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:
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_stopped(true), _data_cap(data_cap),
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_progress_sigh(false), _alloc_sigh(false)
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{
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_ds = Genode::env()->ram_session()->alloc(sizeof(Stream));
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_stream = static_cast<Stream *>(Genode::env()->rm_session()->attach(_ds));
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}
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virtual ~Session_rpc_object()
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{
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if (_ds.valid()) {
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Genode::env()->rm_session()->detach(_stream);
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Genode::env()->ram_session()->free(_ds);
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}
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}
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/**************
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** Signals **
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**************/
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void progress_sigh(Genode::Signal_context_capability sigh)
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{
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_progress.context(sigh);
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_progress_sigh = true;
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}
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Genode::Signal_context_capability data_avail_sigh() {
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return _data_cap; }
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void alloc_sigh(Genode::Signal_context_capability sigh)
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{
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_alloc.context(sigh);
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_alloc_sigh = true;
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}
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/***********************
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** Session interface **
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***********************/
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void start() { _stopped = false; }
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void stop() { _stopped = true; }
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Genode::Dataspace_capability dataspace() { return _ds; }
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/**********************************
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** Session interface extensions **
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**********************************/
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/**
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* Send 'progress' signal
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*/
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void progress_submit()
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{
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if (_progress_sigh)
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_progress.submit();
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}
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/**
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* Send 'alloc' signal
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*/
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void alloc_submit()
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{
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if (_alloc_sigh)
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_alloc.submit();
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}
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/**
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* Return true if client state is stopped
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*/
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bool stopped() const { return _stopped; }
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/**
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* Return true if client session is active
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*/
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bool active() const { return !_stopped; }
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};
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#endif /* _INCLUDE__AUDIO_OUT_SESSION__RPC_OBJECT_H_ */
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