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125 lines
2.6 KiB
C++
125 lines
2.6 KiB
C++
/*
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* \brief Client-side Audio_in-session
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* \author Josef Soentgen
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* \date 2015-05-08
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*/
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/*
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* Copyright (C) 2015 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_IN_SESSION__CLIENT_H_
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#define _INCLUDE__AUDIO_IN_SESSION__CLIENT_H_
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/* Genode includes */
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#include <base/env.h>
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#include <base/rpc_client.h>
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#include <base/attached_dataspace.h>
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#include <audio_in_session/audio_in_session.h>
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namespace Audio_in {
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struct Signal;
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struct Session_client;
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}
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struct Audio_in::Signal
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{
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Genode::Signal_receiver recv;
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Genode::Signal_context context;
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Genode::Signal_context_capability cap;
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Signal() : cap(recv.manage(&context)) { }
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~Signal() { recv.dissolve(&context); }
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void wait() { recv.wait_for_signal(); }
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};
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class Audio_in::Session_client : public Genode::Rpc_client<Session>
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{
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private:
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Genode::Attached_dataspace _shared_ds;
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Signal _progress;
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Genode::Signal_transmitter _data_avail;
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public:
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/**
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* Constructor
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*
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* \param session session capability
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* \param progress_signal true, install 'progress_signal' receiver
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*/
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Session_client(Genode::Region_map &rm,
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Genode::Capability<Session> session,
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bool progress_signal)
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:
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Genode::Rpc_client<Session>(session),
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_shared_ds(rm, call<Rpc_dataspace>()),
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_data_avail(call<Rpc_data_avail_sigh>())
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{
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_stream = _shared_ds.local_addr<Stream>();
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if (progress_signal)
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progress_sigh(_progress.cap);
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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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call<Rpc_progress_sigh>(sigh); }
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void overrun_sigh(Genode::Signal_context_capability sigh) {
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call<Rpc_overrun_sigh>(sigh); }
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Genode::Signal_context_capability data_avail_sigh() {
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return Genode::Signal_context_capability(); }
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/***********************
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** Session interface **
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***********************/
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void start()
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{
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call<Rpc_start>();
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/* reset tail pointer */
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stream()->reset();
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}
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void stop() { call<Rpc_stop>(); }
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/**********************************
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** Session interface extensions **
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**********************************/
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/**
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* Wait for progress signal
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*/
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void wait_for_progress()
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{
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if (!_progress.cap.valid()) {
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Genode::warning("Progress signal is not installed, will not block "
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"(enable in 'Audio_in::Connection')");
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return;
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}
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_progress.wait();
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}
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};
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#endif /* _INCLUDE__AUDIO_IN_SESSION__CLIENT_H_ */
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