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63 lines
1.5 KiB
C
63 lines
1.5 KiB
C
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/*
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* \brief Mixer channel class
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* \author Josef Soentgen
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* \date 2015-10-15
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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__MIXER__CHANNEL_H_
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#define _INCLUDE__MIXER__CHANNEL_H_
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#include <util/string.h>
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#include <util/xml_node.h>
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namespace Mixer {
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struct Channel;
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}
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struct Mixer::Channel
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{
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struct Invalid_channel { };
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typedef Genode::String<128> Label;
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typedef Genode::String<32> Name;
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typedef enum { INVALID = -1, LEFT, RIGHT, MAX_CHANNELS } Number;
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typedef enum { TYPE_INVALID, INPUT, OUTPUT } Type;
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typedef enum { MIN = 0, MAX = 100 } Volume_level;
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Type type;
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Number number;
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Label label;
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int volume;
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bool active;
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bool muted;
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Channel(Genode::Xml_node const &node)
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{
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Genode::String<8> tmp;
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try { node.attribute("type").value(&tmp); }
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catch (...) { throw Invalid_channel(); }
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if (tmp == "input") type = INPUT;
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else if (tmp == "output") type = OUTPUT;
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else throw Invalid_channel();
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try {
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node.attribute("label").value(&label);
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number = (Channel::Number) node.attribute_value<long>("number", 0);
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volume = node.attribute_value<long>("volume", 0);
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active = node.attribute_value<long>("active", 0);
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muted = node.attribute_value<long>("muted", 0);
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} catch (...) { throw Invalid_channel(); }
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}
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};
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#endif /* _INCLUDE__MIXER__CHANNEL_H_ */
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