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vtenc: Add properties to specify the maximum keyframe interval in frames and seconds

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This commit is contained in:
Sebastian Dröge 2014-12-05 16:33:20 +01:00
parent 1a2362eb2b
commit b88e4304f1
2 changed files with 88 additions and 3 deletions
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89
sys/applemedia/vtenc.c
View file

@ -33,6 +33,8 @@
#define VTENC_DEFAULT_FRAME_REORDERING TRUE
#define VTENC_DEFAULT_REALTIME FALSE
#define VTENC_DEFAULT_QUALITY 0.5
#define VTENC_DEFAULT_MAX_KEYFRAME_INTERVAL 0
#define VTENC_DEFAULT_MAX_KEYFRAME_INTERVAL_DURATION 0
GST_DEBUG_CATEGORY (gst_vtenc_debug);
#define GST_CAT_DEFAULT (gst_vtenc_debug)
@ -62,7 +64,9 @@ enum
PROP_BITRATE,
PROP_ALLOW_FRAME_REORDERING,
PROP_REALTIME,
PROP_QUALITY
PROP_QUALITY,
PROP_MAX_KEYFRAME_INTERVAL,
PROP_MAX_KEYFRAME_INTERVAL_DURATION
};
typedef struct _GstVTEncFrame GstVTEncFrame;
@ -219,6 +223,20 @@ gst_vtenc_class_init (GstVTEncClass * klass)
"The desired compression quality",
0.0, 1.0, VTENC_DEFAULT_QUALITY,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MAX_KEYFRAME_INTERVAL,
g_param_spec_int ("max-keyframe-interval", "Max Keyframe Interval",
"Maximum number of frames between keyframes (0 = auto)",
0, G_MAXINT, VTENC_DEFAULT_MAX_KEYFRAME_INTERVAL,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_MAX_KEYFRAME_INTERVAL_DURATION,
g_param_spec_uint64 ("max-keyframe-interval-duration",
"Max Keyframe Interval Duration",
"Maximum number of nanoseconds between keyframes (0 = no limit)", 0,
G_MAXUINT64, VTENC_DEFAULT_MAX_KEYFRAME_INTERVAL_DURATION,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
}
static void
@ -331,6 +349,55 @@ gst_vtenc_set_quality (GstVTEnc * self, gdouble quality)
GST_OBJECT_UNLOCK (self);
}
static gint
gst_vtenc_get_max_keyframe_interval (GstVTEnc * self)
{
gint result;
GST_OBJECT_LOCK (self);
result = self->max_keyframe_interval;
GST_OBJECT_UNLOCK (self);
return result;
}
static void
gst_vtenc_set_max_keyframe_interval (GstVTEnc * self, gint interval)
{
GST_OBJECT_LOCK (self);
self->max_keyframe_interval = interval;
if (self->session != NULL) {
gst_vtenc_session_configure_max_keyframe_interval (self, self->session,
interval);
}
GST_OBJECT_UNLOCK (self);
}
static GstClockTime
gst_vtenc_get_max_keyframe_interval_duration (GstVTEnc * self)
{
GstClockTime result;
GST_OBJECT_LOCK (self);
result = self->max_keyframe_interval_duration;
GST_OBJECT_UNLOCK (self);
return result;
}
static void
gst_vtenc_set_max_keyframe_interval_duration (GstVTEnc * self,
GstClockTime interval)
{
GST_OBJECT_LOCK (self);
self->max_keyframe_interval_duration = interval;
if (self->session != NULL) {
gst_vtenc_session_configure_max_keyframe_interval_duration (self,
self->session, interval / ((gdouble) GST_SECOND));
}
GST_OBJECT_UNLOCK (self);
}
static void
gst_vtenc_get_property (GObject * obj, guint prop_id, GValue * value,
GParamSpec * pspec)
@ -350,6 +417,13 @@ gst_vtenc_get_property (GObject * obj, guint prop_id, GValue * value,
case PROP_QUALITY:
g_value_set_double (value, gst_vtenc_get_quality (self));
break;
case PROP_MAX_KEYFRAME_INTERVAL:
g_value_set_int (value, gst_vtenc_get_max_keyframe_interval (self));
break;
case PROP_MAX_KEYFRAME_INTERVAL_DURATION:
g_value_set_uint64 (value,
gst_vtenc_get_max_keyframe_interval_duration (self));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, prop_id, pspec);
break;
@ -375,6 +449,13 @@ gst_vtenc_set_property (GObject * obj, guint prop_id, const GValue * value,
case PROP_QUALITY:
gst_vtenc_set_quality (self, g_value_get_double (value));
break;
case PROP_MAX_KEYFRAME_INTERVAL:
gst_vtenc_set_max_keyframe_interval (self, g_value_get_int (value));
break;
case PROP_MAX_KEYFRAME_INTERVAL_DURATION:
gst_vtenc_set_max_keyframe_interval_duration (self,
g_value_get_uint64 (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, prop_id, pspec);
break;
@ -624,8 +705,10 @@ gst_vtenc_create_session (GstVTEnc * self)
GST_DEBUG_OBJECT (self,
"kVTCompressionPropertyKey_AllowTemporalCompression => %d", (int) status);
gst_vtenc_session_configure_max_keyframe_interval (self, session, 0);
gst_vtenc_session_configure_max_keyframe_interval_duration (self, session, 0);
gst_vtenc_session_configure_max_keyframe_interval (self, session,
self->max_keyframe_interval);
gst_vtenc_session_configure_max_keyframe_interval_duration (self, session,
self->max_keyframe_interval_duration / ((gdouble) GST_SECOND));
gst_vtenc_session_configure_bitrate (self, session,
gst_vtenc_get_bitrate (self));

2
sys/applemedia/vtenc.h
View file

@ -61,6 +61,8 @@ struct _GstVTEnc
gboolean allow_frame_reordering;
gboolean realtime;
gdouble quality;
gint max_keyframe_interval;
GstClockTime max_keyframe_interval_duration;
gboolean dump_properties;
gboolean dump_attributes;