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/*
* Copyright 2003-2017 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*
* Saving and loading the audio output states to/from the state file.
*
*/
#include "config.h"
#include "State.hxx"
#include "MultipleOutputs.hxx"
#include "Internal.hxx"
#include "Domain.hxx"
#include "Log.hxx"
#include "fs/io/BufferedOutputStream.hxx"
#include "util/StringCompare.hxx"
#include <stdlib.h>
#define AUDIO_DEVICE_STATE "audio_device_state:"
unsigned audio_output_state_version;
void
audio_output_state_save(BufferedOutputStream &os,
const MultipleOutputs &outputs)
{
for (unsigned i = 0, n = outputs.Size(); i != n; ++i) {
const auto &ao = outputs.Get(i);
const std::lock_guard<Mutex> lock(ao.mutex);
os.Format(AUDIO_DEVICE_STATE "%d:%s\n",
ao.IsEnabled(), ao.GetName());
}
}
bool
audio_output_state_read(const char *line, MultipleOutputs &outputs)
{
long value;
char *endptr;
const char *name;
line = StringAfterPrefix(line, AUDIO_DEVICE_STATE);
if (line == nullptr)
return false;
value = strtol(line, &endptr, 10);
if (*endptr != ':' || (value != 0 && value != 1))
return false;
if (value != 0)
/* state is "enabled": no-op */
return true;
name = endptr + 1;
auto *ao = outputs.FindByName(name);
if (ao == NULL) {
FormatDebug(output_domain,
"Ignoring device state for '%s'", name);
return true;
}
ao->LockSetEnabled(false);
return true;
}
unsigned
audio_output_state_get_version(void)
{
return audio_output_state_version;
}
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