genode/repos/os/include/mixer/channel.h
2019-01-30 13:49:54 +01:00

60 lines
1.5 KiB
C++

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