2009-03-13 18:43:16 +01:00
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/*
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2011-01-29 10:13:54 +01:00
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* Copyright (C) 2003-2011 The Music Player Daemon Project
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2009-03-13 18:43:16 +01:00
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* http://www.musicpd.org
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2007-05-30 20:16:35 +02:00
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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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2009-03-13 18:43:16 +01:00
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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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2007-05-30 20:16:35 +02:00
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*/
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2009-11-12 09:12:38 +01:00
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#include "config.h"
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2007-05-30 20:16:35 +02:00
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#include "timer.h"
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2008-09-07 19:19:55 +02:00
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#include "audio_format.h"
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2008-10-08 10:49:29 +02:00
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2009-01-03 14:52:53 +01:00
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#include <glib.h>
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2008-10-08 10:49:29 +02:00
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#include <assert.h>
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#include <limits.h>
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#include <sys/time.h>
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2009-01-03 14:52:53 +01:00
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#include <stddef.h>
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2007-05-30 20:16:35 +02:00
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static uint64_t now(void)
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{
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struct timeval tv;
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gettimeofday(&tv, NULL);
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return ((uint64_t)tv.tv_sec * 1000000) + tv.tv_usec;
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}
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2011-07-25 21:55:43 +02:00
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struct timer *timer_new(const struct audio_format *af)
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2007-05-30 20:16:35 +02:00
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{
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2011-07-25 21:55:43 +02:00
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struct timer *timer = g_new(struct timer, 1);
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2007-05-30 20:16:35 +02:00
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timer->time = 0;
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timer->started = 0;
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2008-10-10 14:41:37 +02:00
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timer->rate = af->sample_rate * audio_format_frame_size(af);
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2007-05-30 20:16:35 +02:00
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return timer;
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}
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2011-07-25 21:55:43 +02:00
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void timer_free(struct timer *timer)
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2007-05-30 20:16:35 +02:00
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{
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2009-01-03 14:52:53 +01:00
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g_free(timer);
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2007-05-30 20:16:35 +02:00
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}
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2011-07-25 21:55:43 +02:00
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void timer_start(struct timer *timer)
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2007-05-30 20:16:35 +02:00
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{
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2007-06-12 19:58:17 +02:00
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timer->time = now();
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2007-05-30 20:16:35 +02:00
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timer->started = 1;
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}
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2011-07-25 21:55:43 +02:00
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void timer_reset(struct timer *timer)
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2007-05-30 20:16:35 +02:00
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{
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timer->time = 0;
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timer->started = 0;
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}
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2011-07-25 21:55:43 +02:00
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void timer_add(struct timer *timer, int size)
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2007-05-30 20:16:35 +02:00
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{
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assert(timer->started);
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timer->time += ((uint64_t)size * 1000000) / timer->rate;
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}
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2010-11-05 09:39:50 +01:00
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unsigned
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2011-07-25 21:55:43 +02:00
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timer_delay(const struct timer *timer)
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2010-11-05 09:39:50 +01:00
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{
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2010-11-18 21:29:03 +01:00
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int64_t delay = (int64_t)(timer->time - now()) / 1000;
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2010-11-05 09:39:50 +01:00
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if (delay < 0)
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return 0;
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2010-11-05 08:02:38 +01:00
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if (delay > G_MAXINT)
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delay = G_MAXINT;
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2010-11-05 09:39:50 +01:00
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2011-12-13 21:02:33 +01:00
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return delay;
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2010-11-05 09:39:50 +01:00
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}
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2011-07-25 21:55:43 +02:00
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void timer_sync(struct timer *timer)
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2007-05-30 20:16:35 +02:00
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{
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2008-01-26 13:46:21 +01:00
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int64_t sleep_duration;
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2007-05-30 20:16:35 +02:00
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assert(timer->started);
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2008-01-26 13:46:21 +01:00
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sleep_duration = timer->time - now();
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if (sleep_duration > 0)
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2009-02-19 13:33:03 +01:00
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g_usleep(sleep_duration);
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2007-05-30 20:16:35 +02:00
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}
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