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-rw-r--r--src/Makefile.am6
-rw-r--r--src/audioOutputs/audioOutput_null.c93
-rw-r--r--src/timer.c80
-rw-r--r--src/timer.h43
4 files changed, 146 insertions, 76 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index bd1e6877c..b755ec288 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -77,7 +77,8 @@ mpd_headers = \
ioops.h \
zeroconf.h \
locate.h \
- storedPlaylist.h
+ storedPlaylist.h \
+ timer.h
mpd_SOURCES = \
@@ -129,7 +130,8 @@ mpd_SOURCES = \
utf8.c \
zeroconf.c \
locate.c \
- storedPlaylist.c
+ storedPlaylist.c \
+ timer.c
mpd_CFLAGS = $(MPD_CFLAGS)
diff --git a/src/audioOutputs/audioOutput_null.c b/src/audioOutputs/audioOutput_null.c
index df58c7139..7dc3f1756 100644
--- a/src/audioOutputs/audioOutput_null.c
+++ b/src/audioOutputs/audioOutput_null.c
@@ -17,110 +17,55 @@
*/
#include "../audioOutput.h"
-
-#include <stdlib.h>
-#include <limits.h>
-#include <sys/time.h>
-
-typedef struct _NullData {
- uint64_t nextPlay;
- int rate;
-} NullData;
-
-static NullData *newNullData(void)
-{
- NullData *ret;
-
- ret = xmalloc(sizeof(NullData));
- ret->nextPlay = 0;
- ret->rate = 0;
-
- return ret;
-}
-
-static void freeNullData(NullData *nd)
-{
- free(nd);
-}
-
-static uint64_t null_getTime(void)
-{
- struct timeval tv;
-
- gettimeofday(&tv, NULL);
-
- return ((uint64_t)tv.tv_sec * 1000000) + tv.tv_usec;
-}
+#include "../timer.h"
static int null_initDriver(AudioOutput *audioOutput, ConfigParam *param)
{
- NullData *nd;
-
- nd = newNullData();
- audioOutput->data = nd;
-
+ audioOutput->data = NULL;
return 0;
}
-static void null_finishDriver(AudioOutput *audioOutput)
-{
- freeNullData((NullData *)audioOutput->data);
-}
-
static int null_openDevice(AudioOutput *audioOutput)
{
- NullData *nd;
- AudioFormat *af;
-
- nd = audioOutput->data;
- af = &audioOutput->outAudioFormat;
- nd->rate = af->sampleRate * (af->bits / CHAR_BIT) * af->channels;
+ audioOutput->data = timer_new(&audioOutput->outAudioFormat);
audioOutput->open = 1;
-
return 0;
}
-static void null_dropBufferedAudio(AudioOutput *audioOutput)
-{
- NullData *nd;
-
- nd = audioOutput->data;
- nd->nextPlay = 0;
-}
-
static void null_closeDevice(AudioOutput *audioOutput)
{
- NullData *nd;
+ if (audioOutput->data) {
+ timer_free(audioOutput->data);
+ audioOutput->data = NULL;
+ }
- nd = audioOutput->data;
- nd->nextPlay = 0;
- nd->rate = 0;
audioOutput->open = 0;
}
static int null_playAudio(AudioOutput *audioOutput, char *playChunk, int size)
{
- NullData *nd;
- uint64_t now;
+ Timer *timer = audioOutput->data;
- nd = audioOutput->data;
- now = null_getTime();
+ if (!timer->started)
+ timer_start(timer);
+ else
+ timer_sync(timer);
- if (nd->nextPlay == 0)
- nd->nextPlay = now;
- else if (nd->nextPlay > now)
- my_usleep(nd->nextPlay - now);
-
- nd->nextPlay += ((uint64_t)size * 1000000) / nd->rate;
+ timer_add(timer, size);
return 0;
}
+static void null_dropBufferedAudio(AudioOutput *audioOutput)
+{
+ timer_reset(audioOutput->data);
+}
+
AudioOutputPlugin nullPlugin = {
"null",
NULL,
null_initDriver,
- null_finishDriver,
+ NULL,
null_openDevice,
null_playAudio,
null_dropBufferedAudio,
diff --git a/src/timer.c b/src/timer.c
new file mode 100644
index 000000000..0406a945e
--- /dev/null
+++ b/src/timer.c
@@ -0,0 +1,80 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2007 by Warren Dukes (warren.dukes@gmail.com)
+ * This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "timer.h"
+#include "utils.h"
+
+#include <assert.h>
+#include <limits.h>
+#include <sys/time.h>
+
+static uint64_t now(void)
+{
+ struct timeval tv;
+
+ gettimeofday(&tv, NULL);
+
+ return ((uint64_t)tv.tv_sec * 1000000) + tv.tv_usec;
+}
+
+Timer *timer_new(AudioFormat *af)
+{
+ Timer *timer;
+
+ timer = xmalloc(sizeof(Timer));
+ timer->time = 0;
+ timer->started = 0;
+ timer->rate = af->sampleRate * (af->bits / CHAR_BIT) * af->channels;
+
+ return timer;
+}
+
+void timer_free(Timer *timer)
+{
+ free(timer);
+}
+
+void timer_start(Timer *timer)
+{
+ timer->time = now();
+ timer->started = 1;
+}
+
+void timer_reset(Timer *timer)
+{
+ timer->time = 0;
+ timer->started = 0;
+}
+
+void timer_add(Timer *timer, int size)
+{
+ assert(timer->started);
+
+ timer->time += ((uint64_t)size * 1000000) / timer->rate;
+}
+
+void timer_sync(Timer *timer)
+{
+ int64_t sleep;
+
+ assert(timer->started);
+
+ sleep = timer->time - now();
+ if (sleep > 0)
+ my_usleep(sleep);
+}
diff --git a/src/timer.h b/src/timer.h
new file mode 100644
index 000000000..c8018e260
--- /dev/null
+++ b/src/timer.h
@@ -0,0 +1,43 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2007 by Warren Dukes (warren.dukes@gmail.com)
+ * This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef MPD_TIMER_H
+#define MPD_TIMER_H
+
+#include "audio.h"
+#include "mpd_types.h"
+
+typedef struct _Timer {
+ uint64_t time;
+ int started;
+ int rate;
+} Timer;
+
+Timer *timer_new(AudioFormat *af);
+
+void timer_free(Timer *timer);
+
+void timer_start(Timer *timer);
+
+void timer_reset(Timer *timer);
+
+void timer_add(Timer *timer, int size);
+
+void timer_sync(Timer *timer);
+
+#endif
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