| /* GStreamer |
| * |
| * Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org> |
| * 2011 Stefan Sauer <ensonic@users.sf.net> |
| * |
| * gsttimedvaluecontrolsource.h: Base class for timeed value based control |
| * sources |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library 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 |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #ifndef __GST_TIMED_VALUE_CONTROL_SOURCE_H__ |
| #define __GST_TIMED_VALUE_CONTROL_SOURCE_H__ |
| |
| #include <glib-object.h> |
| #include <gst/gst.h> |
| |
| #include <gst/gstcontrolsource.h> |
| |
| G_BEGIN_DECLS |
| |
| #define GST_TYPE_TIMED_VALUE_CONTROL_SOURCE \ |
| (gst_timed_value_control_source_get_type ()) |
| #define GST_TIMED_VALUE_CONTROL_SOURCE(obj) \ |
| (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TIMED_VALUE_CONTROL_SOURCE, GstTimedValueControlSource)) |
| #define GST_TIMED_VALUE_CONTROL_SOURCE_CLASS(vtable) \ |
| (G_TYPE_CHECK_CLASS_CAST ((vtable), GST_TYPE_TIMED_VALUE_CONTROL_SOURCE, GstTimedValueControlSourceClass)) |
| #define GST_IS_TIMED_VALUE_CONTROL_SOURCE(obj) \ |
| (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_TIMED_VALUE_CONTROL_SOURCE)) |
| #define GST_IS_TIMED_VALUE_CONTROL_SOURCE_CLASS(vtable) \ |
| (G_TYPE_CHECK_CLASS_TYPE ((vtable), GST_TYPE_TIMED_VALUE_CONTROL_SOURCE)) |
| #define GST_TIMED_VALUE_CONTROL_SOURCE_GET_CLASS(inst) \ |
| (G_TYPE_INSTANCE_GET_CLASS ((inst), GST_TYPE_TIMED_VALUE_CONTROL_SOURCE, GstTimedValueControlSourceClass)) |
| |
| typedef struct _GstTimedValueControlSource GstTimedValueControlSource; |
| typedef struct _GstTimedValueControlSourceClass GstTimedValueControlSourceClass; |
| typedef struct _GstTimedValueControlSourcePrivate GstTimedValueControlSourcePrivate; |
| typedef struct _GstControlPoint GstControlPoint; |
| |
| /** |
| * GstControlPoint: |
| * @timestamp: timestamp of the value change |
| * @value: the new value |
| * |
| * a internal structure for value+time and various temporary |
| * values used for interpolation. This "inherits" from |
| * GstTimedValue. |
| */ |
| struct _GstControlPoint |
| { |
| /* fields from GstTimedValue. DO NOT CHANGE! */ |
| GstClockTime timestamp; |
| gdouble value; |
| |
| /*< private >*/ |
| |
| /* Caches for the interpolators */ |
| /* FIXME: we should not have this here already ... */ |
| union { |
| struct { |
| gdouble h; |
| gdouble z; |
| } cubic; |
| } cache; |
| |
| }; |
| |
| GType gst_control_point_get_type (void); |
| |
| /** |
| * GstTimedValueControlSource: |
| * |
| * The instance structure of #GstControlSource. |
| */ |
| struct _GstTimedValueControlSource { |
| GstControlSource parent; |
| |
| /*< protected >*/ |
| GMutex lock; |
| |
| GSequence *values; /* List of GstControlPoint */ |
| gint nvalues; /* Number of control points */ |
| gboolean valid_cache; |
| |
| /*< private >*/ |
| GstTimedValueControlSourcePrivate *priv; |
| gpointer _gst_reserved[GST_PADDING]; |
| }; |
| |
| struct _GstTimedValueControlSourceClass { |
| GstControlSourceClass parent_class; |
| |
| /*< private >*/ |
| gpointer _gst_reserved[GST_PADDING]; |
| }; |
| |
| #define GST_TIMED_VALUE_CONTROL_SOURCE_LOCK(o) \ |
| g_mutex_lock(&((GstTimedValueControlSource *)o)->lock) |
| #define GST_TIMED_VALUE_CONTROL_SOURCE_UNLOCK(o) \ |
| g_mutex_unlock(&((GstTimedValueControlSource *)o)->lock) |
| |
| GType gst_timed_value_control_source_get_type (void); |
| |
| /* Functions */ |
| |
| GSequenceIter * gst_timed_value_control_source_find_control_point_iter ( |
| GstTimedValueControlSource * self, |
| GstClockTime timestamp); |
| |
| gboolean gst_timed_value_control_source_set (GstTimedValueControlSource * self, |
| GstClockTime timestamp, |
| const gdouble value); |
| gboolean gst_timed_value_control_source_set_from_list (GstTimedValueControlSource * self, |
| const GSList * timedvalues); |
| gboolean gst_timed_value_control_source_unset (GstTimedValueControlSource * self, |
| GstClockTime timestamp); |
| void gst_timed_value_control_source_unset_all (GstTimedValueControlSource *self); |
| GList * gst_timed_value_control_source_get_all (GstTimedValueControlSource * self); |
| gint gst_timed_value_control_source_get_count (GstTimedValueControlSource * self); |
| void gst_timed_value_control_invalidate_cache (GstTimedValueControlSource * self); |
| |
| G_END_DECLS |
| |
| #endif /* __GST_TIMED_VALUE_CONTROL_SOURCE_H__ */ |