d47be76ce0
The null plugin synchronizes the playback so it will happen in real time. This patch adds a configuration option which disables this: the playback will then be as fast as possible. This can be useful to profile MPD.
116 lines
2.3 KiB
C
116 lines
2.3 KiB
C
/* the Music Player Daemon (MPD)
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* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
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* This project's homepage is: 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "../output_api.h"
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#include "../timer.h"
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#include <glib.h>
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#include <assert.h>
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struct null_data {
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bool sync;
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Timer *timer;
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};
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static void *
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null_init(G_GNUC_UNUSED struct audio_output *audio_output,
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G_GNUC_UNUSED const struct audio_format *audio_format,
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G_GNUC_UNUSED struct config_param *param)
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{
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struct null_data *nd = g_new(struct null_data, 1);
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nd->sync = config_get_block_bool(param, "sync", true);
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nd->timer = NULL;
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return nd;
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}
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static void
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null_finish(void *data)
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{
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struct null_data *nd = data;
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assert(nd->timer == NULL);
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g_free(nd);
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}
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static bool
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null_open(void *data, struct audio_format *audio_format)
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{
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struct null_data *nd = data;
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if (nd->sync)
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nd->timer = timer_new(audio_format);
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return true;
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}
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static void
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null_close(void *data)
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{
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struct null_data *nd = data;
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if (nd->timer != NULL) {
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timer_free(nd->timer);
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nd->timer = NULL;
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}
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}
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static bool
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null_play(void *data, G_GNUC_UNUSED const char *chunk, size_t size)
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{
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struct null_data *nd = data;
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Timer *timer = nd->timer;
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if (!nd->sync)
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return true;
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if (!timer->started)
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timer_start(timer);
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else
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timer_sync(timer);
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timer_add(timer, size);
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return true;
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}
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static void
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null_cancel(void *data)
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{
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struct null_data *nd = data;
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if (!nd->sync)
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return;
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timer_reset(nd->timer);
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}
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const struct audio_output_plugin null_output_plugin = {
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.name = "null",
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.init = null_init,
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.finish = null_finish,
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.open = null_open,
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.close = null_close,
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.play = null_play,
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.cancel = null_cancel,
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};
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