diff options
Diffstat (limited to 'gst/gstcontrolsource.c')
| -rw-r--r-- | gst/gstcontrolsource.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/gst/gstcontrolsource.c b/gst/gstcontrolsource.c index 53484ad..68132bf 100644 --- a/gst/gstcontrolsource.c +++ b/gst/gstcontrolsource.c @@ -25,20 +25,18 @@ * @short_description: base class for control source sources * * The #GstControlSource is a base class for control value sources that could - * be used by #GstController to get timestamp-value pairs. + * be used by #GstController to get timestamp-value pairs. A control source + * essentially is a function over time, returning gloat values between 0.0 and 1.0. * - * A #GstControlSource is used by first getting an instance, binding it to a - * #GParamSpec (for example by using gst_controller_set_control_source()) and - * then by having it used by the #GstController or calling - * gst_control_source_get_value() or gst_control_source_get_value_array(). - * - * For implementing a new #GstControlSource one has to implement a - * #GstControlSourceBind method, which will depending on the #GParamSpec set up - * the control source for use and sets the #GstControlSourceGetValue and - * #GstControlSourceGetValueArray functions. These are then used by - * gst_control_source_get_value() or gst_control_source_get_value_array() - * to get values for specific timestamps. + * A #GstControlSource is used by first getting an instance of a specific + * control-source, creating a binding for the control-source to the target property + * of the element and then adding the binding to the element. The binding will + * convert the data types and value range to fit to the bound property. * + * For implementing a new #GstControlSource one has to implement + * #GstControlSourceGetValue and #GstControlSourceGetValueArray functions. + * These are then used by gst_control_source_get_value() and + * gst_control_source_get_value_array() to get values for specific timestamps. */ #include "gst_private.h" |