e53ca368a5
With these methods, an output plugin can allocate some global resources only if it is actually enabled. The method enable() is called after daemonization, which allows for more sophisticated resource allocation during that method.
87 lines
1.9 KiB
C
87 lines
1.9 KiB
C
/*
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* Copyright (C) 2003-2009 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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* Glue functions for controlling the audio outputs over the MPD
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* protocol. These functions perform extra validation on all
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* parameters, because they might be from an untrusted source.
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*
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*/
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#include "output_command.h"
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#include "output_all.h"
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#include "output_internal.h"
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#include "output_plugin.h"
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#include "mixer_control.h"
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#include "player_control.h"
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#include "idle.h"
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extern unsigned audio_output_state_version;
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bool
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audio_output_enable_index(unsigned idx)
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{
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struct audio_output *ao;
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if (idx >= audio_output_count())
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return false;
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ao = audio_output_get(idx);
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if (ao->enabled)
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return true;
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ao->enabled = true;
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idle_add(IDLE_OUTPUT);
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pc_update_audio();
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++audio_output_state_version;
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return true;
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}
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bool
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audio_output_disable_index(unsigned idx)
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{
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struct audio_output *ao;
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struct mixer *mixer;
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if (idx >= audio_output_count())
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return false;
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ao = audio_output_get(idx);
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if (!ao->enabled)
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return true;
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ao->enabled = false;
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idle_add(IDLE_OUTPUT);
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mixer = ao->mixer;
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if (mixer != NULL) {
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mixer_close(mixer);
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idle_add(IDLE_MIXER);
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}
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pc_update_audio();
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++audio_output_state_version;
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return true;
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}
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