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GStreamer 0.9 Core Reference Manual | ![]() |
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GstProbeGstProbe — |
#include <gst/gst.h> GstProbe; gboolean (*GstProbeCallback) (GstProbe *probe, GstMiniObject **data, gpointer user_data); GstProbeDispatcher; GstProbe* gst_probe_new (gboolean single_shot, GstProbeCallback callback, gpointer user_data); void gst_probe_destroy (GstProbe *probe); void gst_probe_dispatcher_add_probe (GstProbeDispatcher *disp, GstProbe *probe); void gst_probe_dispatcher_destroy (GstProbeDispatcher *disp); gboolean gst_probe_dispatcher_dispatch (GstProbeDispatcher *disp, GstMiniObject **data); void gst_probe_dispatcher_init (GstProbeDispatcher *disp); GstProbeDispatcher* gst_probe_dispatcher_new (void); void gst_probe_dispatcher_remove_probe (GstProbeDispatcher *disp, GstProbe *probe); void gst_probe_dispatcher_set_active (GstProbeDispatcher *disp, gboolean active); gboolean gst_probe_perform (GstProbe *probe, GstMiniObject **mini_object);
typedef struct { gboolean single_shot; GstProbeCallback callback; gpointer user_data; } GstProbe;
gboolean (*GstProbeCallback) (GstProbe *probe, GstMiniObject **data, gpointer user_data);
probe : |
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data : |
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user_data : |
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Returns : |
GstProbe* gst_probe_new (gboolean single_shot, GstProbeCallback callback, gpointer user_data);
Create a new probe with the specified parameters. The single shot probe will be fired only once. It is the responsability of the application to free the single probe after it has been fired.
single_shot : |
TRUE if a single shot probe is required |
callback : |
the function to call when the probe is triggered |
user_data : |
data passed to the callback function |
Returns : | a new GstProbe. |
void gst_probe_destroy (GstProbe *probe);
Free the memory associated with the probe.
probe : |
The probe to destroy |
void gst_probe_dispatcher_add_probe (GstProbeDispatcher *disp, GstProbe *probe);
Adds the given probe to the dispatcher.
disp : |
the dispatcher to add the probe to |
probe : |
the probe to add to the dispatcher |
void gst_probe_dispatcher_destroy (GstProbeDispatcher *disp);
Free the memory allocated by the probe dispatcher. All pending probes are removed first.
disp : |
the dispatcher to destroy |
gboolean gst_probe_dispatcher_dispatch (GstProbeDispatcher *disp, GstMiniObject **data);
Trigger all registered probes on the given dispatcher.
disp : |
the dispatcher to dispatch |
data : |
the data that triggered the dispatch |
Returns : | TRUE if all callbacks returned TRUE. |
void gst_probe_dispatcher_init (GstProbeDispatcher *disp);
Initialize the dispatcher. Useful for statically allocated probe dispatchers.
disp : |
the dispatcher to initialize |
GstProbeDispatcher* gst_probe_dispatcher_new (void);
Create a new probe dispatcher
Returns : | a new probe dispatcher. |
void gst_probe_dispatcher_remove_probe (GstProbeDispatcher *disp, GstProbe *probe);
Removes the given probe from the dispatcher.
disp : |
the dispatcher to remove the probe from |
probe : |
the probe to remove from the dispatcher |
void gst_probe_dispatcher_set_active (GstProbeDispatcher *disp, gboolean active);
Activate or deactivate the given dispatcher dispatchers.
disp : |
the dispatcher to activate |
active : |
boolean to indicate activation or deactivation |
gboolean gst_probe_perform (GstProbe *probe, GstMiniObject **mini_object);
Perform the callback associated with the given probe.
probe : |
The probe to trigger |
mini_object : |
the GstMiniObject that triggered the probe. |
Returns : | the result of the probe callback function. |
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