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alsasrc: added option for chosing timestamps

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Added an option for chosing if driver or pipeline timestamps shall be
used.
This commit is contained in:
Danny Smith 2018-06-08 11:03:03 +02:00 committed by Robert Rosengren
parent 7095b7c47a
commit a4cde36476
2 changed files with 28 additions and 4 deletions
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25
ext/alsa/gstalsasrc.c
View file

@ -57,6 +57,7 @@
#define DEFAULT_PROP_DEVICE "default"
#define DEFAULT_PROP_DEVICE_NAME ""
#define DEFAULT_PROP_CARD_NAME ""
#define DEFAULT_PROP_USE_DRIVER_TIMESTAMP TRUE
enum
{
@ -64,6 +65,7 @@ enum
PROP_DEVICE,
PROP_DEVICE_NAME,
PROP_CARD_NAME,
PROP_USE_DRIVER_TIMESTAMP,
PROP_LAST
};
@ -171,6 +173,12 @@ gst_alsasrc_class_init (GstAlsaSrcClass * klass)
g_param_spec_string ("card-name", "Card name",
"Human-readable name of the sound card",
DEFAULT_PROP_CARD_NAME, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_USE_DRIVER_TIMESTAMP,
g_param_spec_boolean ("use-driver-timestamps", "Use driver timestamps",
"Use driver timestamps or the pipeline clock timestamps",
DEFAULT_PROP_USE_DRIVER_TIMESTAMP,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
@ -189,6 +197,11 @@ gst_alsasrc_set_property (GObject * object, guint prop_id,
src->device = g_strdup (DEFAULT_PROP_DEVICE);
}
break;
case PROP_USE_DRIVER_TIMESTAMP:
GST_OBJECT_LOCK (src);
src->use_driver_timestamps = g_value_get_boolean (value);
GST_OBJECT_UNLOCK (src);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -217,6 +230,11 @@ gst_alsasrc_get_property (GObject * object, guint prop_id,
gst_alsa_find_card_name (GST_OBJECT_CAST (src),
src->device, SND_PCM_STREAM_CAPTURE));
break;
case PROP_USE_DRIVER_TIMESTAMP:
GST_OBJECT_LOCK (src);
g_value_set_boolean (value, src->use_driver_timestamps);
GST_OBJECT_UNLOCK (src);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -250,9 +268,13 @@ gst_alsasrc_change_state (GstElement * element, GstStateChange transition)
if (GST_IS_SYSTEM_CLOCK (clk)) {
gint clocktype;
g_object_get (clk, "clock-type", &clocktype, NULL);
if (clocktype == GST_CLOCK_TYPE_MONOTONIC) {
if (clocktype == GST_CLOCK_TYPE_MONOTONIC &&
alsa->use_driver_timestamps) {
GST_INFO ("Using driver timestamps !");
alsa->driver_timestamps = TRUE;
} else {
GST_INFO ("Not using driver timestamps !");
alsa->driver_timestamps = FALSE;
}
}
@ -273,6 +295,7 @@ gst_alsasrc_init (GstAlsaSrc * alsasrc)
alsasrc->device = g_strdup (DEFAULT_PROP_DEVICE);
alsasrc->cached_caps = NULL;
alsasrc->driver_timestamps = FALSE;
alsasrc->use_driver_timestamps = DEFAULT_PROP_USE_DRIVER_TIMESTAMP;
g_mutex_init (&alsasrc->alsa_lock);
}

1
ext/alsa/gstalsasrc.h
View file

@ -64,6 +64,7 @@ struct _GstAlsaSrc {
guint channels;
gint bpf;
gboolean driver_timestamps;
gboolean use_driver_timestamps;
guint buffer_time;
guint period_time;