/* * 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 "OutputState.hxx" #include "MultipleOutputs.hxx" #include "Internal.hxx" #include "Domain.hxx" #include "Log.hxx" #include "fs/io/BufferedOutputStream.hxx" #include "util/StringCompare.hxx" #include #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 AudioOutput &ao = outputs.Get(i); const std::lock_guard 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; AudioOutput *ao = outputs.FindByName(name); if (ao == NULL) { FormatDebug(output_domain, "Ignoring device state for '%s'", name); return true; } ao->enabled = false; return true; } unsigned audio_output_state_get_version(void) { return audio_output_state_version; }