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<title>GstTask: GStreamer 1.0 Core Reference Manual</title>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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Top |
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Description |
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Object Hierarchy
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GstTask
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GstTask — Abstraction of GStreamer streaming threads.
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Functions
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void
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(*GstTaskFunction) ()
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#define
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GST_TASK_BROADCAST()
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#define
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GST_TASK_GET_COND()
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#define
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GST_TASK_GET_LOCK()
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#define
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GST_TASK_SIGNAL()
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#define
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GST_TASK_STATE()
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#define
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GST_TASK_WAIT()
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GstTask *
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gst_task_new ()
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void
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gst_task_set_lock ()
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void
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gst_task_set_pool ()
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GstTaskPool *
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gst_task_get_pool ()
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void
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(*GstTaskThreadFunc) ()
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void
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gst_task_set_enter_callback ()
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void
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gst_task_set_leave_callback ()
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GstTaskState
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gst_task_get_state ()
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gboolean
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gst_task_set_state ()
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gboolean
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gst_task_pause ()
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gboolean
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gst_task_start ()
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gboolean
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gst_task_stop ()
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gboolean
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gst_task_join ()
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void
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gst_task_cleanup_all ()
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Types and Values
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struct
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GstTask
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enum
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GstTaskState
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Object Hierarchy
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GObject
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╰── GInitiallyUnowned
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╰── GstObject
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╰── GstTask
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Includes
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#include <gst/gst.h>
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Description
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GstTask is used by GstElement and GstPad to provide the data passing
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threads in a GstPipeline.
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A GstPad will typically start a GstTask to push or pull data to/from the
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peer pads. Most source elements start a GstTask to push data. In some cases
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a demuxer element can start a GstTask to pull data from a peer element. This
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is typically done when the demuxer can perform random access on the upstream
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peer element for improved performance.
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Although convenience functions exist on GstPad to start/pause/stop tasks, it
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might sometimes be needed to create a GstTask manually if it is not related to
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a GstPad.
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Before the GstTask can be run, it needs a GRecMutex that can be set with
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gst_task_set_lock().
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The task can be started, paused and stopped with gst_task_start(), gst_task_pause()
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and gst_task_stop() respectively or with the gst_task_set_state() function.
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A GstTask will repeatedly call the GstTaskFunction with the user data
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that was provided when creating the task with gst_task_new(). While calling
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the function it will acquire the provided lock. The provided lock is released
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when the task pauses or stops.
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Stopping a task with gst_task_stop() will not immediately make sure the task is
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not running anymore. Use gst_task_join() to make sure the task is completely
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stopped and the thread is stopped.
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After creating a GstTask, use gst_object_unref() to free its resources. This can
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only be done when the task is not running anymore.
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Task functions can send a GstMessage to send out-of-band data to the
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application. The application can receive messages from the GstBus in its
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mainloop.
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For debugging purposes, the task will configure its object name as the thread
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name on Linux. Please note that the object name should be configured before the
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task is started; changing the object name after the task has been started, has
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no effect on the thread name.
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Functions
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GstTaskFunction ()
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void
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(*GstTaskFunction) (gpointer user_data);
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A function that will repeatedly be called in the thread created by
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a GstTask.
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Parameters
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user_data
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user data passed to the function
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GST_TASK_BROADCAST()
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#define GST_TASK_BROADCAST(task) g_cond_broadcast(GST_TASK_GET_COND (task))
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Send a broadcast signal to all waiting task conds
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Parameters
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task
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Task to broadcast
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GST_TASK_GET_COND()
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#define GST_TASK_GET_COND(task) (&GST_TASK_CAST(task)->cond)
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Get access to the cond of the task.
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Parameters
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task
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Task to get the cond of
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GST_TASK_GET_LOCK()
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#define GST_TASK_GET_LOCK(task) (GST_TASK_CAST(task)->lock)
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Get access to the task lock.
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Parameters
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task
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Task to get the lock of
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GST_TASK_SIGNAL()
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#define GST_TASK_SIGNAL(task) g_cond_signal(GST_TASK_GET_COND (task))
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Signal the task cond
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Parameters
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task
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Task to signal
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GST_TASK_STATE()
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#define GST_TASK_STATE(task) (GST_TASK_CAST(task)->state)
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Get access to the state of the task.
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Parameters
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task
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Task to get the state of
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GST_TASK_WAIT()
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#define GST_TASK_WAIT(task) g_cond_wait(GST_TASK_GET_COND (task), GST_OBJECT_GET_LOCK (task))
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Wait for the task cond to be signalled
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Parameters
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task
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Task to wait for
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gst_task_new ()
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GstTask *
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gst_task_new (GstTaskFunction func,
|
|
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a6ee4b |
gpointer user_data,
|
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a6ee4b |
GDestroyNotify notify);
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Create a new Task that will repeatedly call the provided func
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with user_data
|
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as a parameter. Typically the task will run in
|
|
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a new thread.
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The function cannot be changed after the task has been created. You
|
|
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must create a new GstTask to change the function.
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|
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This function will not yet create and start a thread. Use gst_task_start() or
|
|
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gst_task_pause() to create and start the GThread.
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|
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Before the task can be used, a GRecMutex must be configured using the
|
|
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a6ee4b |
gst_task_set_lock() function. This lock will always be acquired while
|
|
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func
|
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is called.
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Parameters
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|
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func
|
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The GstTaskFunction to use
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user_data
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User data to pass to func
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notify
|
|
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a6ee4b |
the function to call when user_data
|
|
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is no longer needed.
|
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Returns
|
|
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a6ee4b |
A new GstTask.
|
|
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a6ee4b |
MT safe.
|
|
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a6ee4b |
[transfer full]
|
|
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a6ee4b |
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gst_task_set_lock ()
|
|
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a6ee4b |
void
|
|
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a6ee4b |
gst_task_set_lock (GstTask *task,
|
|
Packit |
a6ee4b |
GRecMutex *mutex);
|
|
Packit |
a6ee4b |
Set the mutex used by the task. The mutex will be acquired before
|
|
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a6ee4b |
calling the GstTaskFunction.
|
|
Packit |
a6ee4b |
This function has to be called before calling gst_task_pause() or
|
|
Packit |
a6ee4b |
gst_task_start().
|
|
Packit |
a6ee4b |
MT safe.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Parameters
|
|
Packit |
a6ee4b |
|
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a6ee4b |
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a6ee4b |
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|
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|
|
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a6ee4b |
|
|
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a6ee4b |
task
|
|
Packit |
a6ee4b |
The GstTask to use
|
|
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a6ee4b |
|
|
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a6ee4b |
|
|
Packit |
a6ee4b |
|
|
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a6ee4b |
mutex
|
|
Packit |
a6ee4b |
The GRecMutex to use
|
|
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a6ee4b |
|
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a6ee4b |
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|
|
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a6ee4b |
gst_task_set_pool ()
|
|
Packit |
a6ee4b |
void
|
|
Packit |
a6ee4b |
gst_task_set_pool (GstTask *task,
|
|
Packit |
a6ee4b |
GstTaskPool *pool);
|
|
Packit |
a6ee4b |
Set pool
|
|
Packit |
a6ee4b |
as the new GstTaskPool for task
|
|
Packit |
a6ee4b |
. Any new streaming threads that
|
|
Packit |
a6ee4b |
will be created by task
|
|
Packit |
a6ee4b |
will now use pool
|
|
Packit |
a6ee4b |
.
|
|
Packit |
a6ee4b |
MT safe.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Parameters
|
|
Packit |
a6ee4b |
|
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a6ee4b |
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a6ee4b |
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|
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|
|
Packit |
a6ee4b |
|
|
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a6ee4b |
task
|
|
Packit |
a6ee4b |
a GstTask
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
pool
|
|
Packit |
a6ee4b |
a GstTaskPool.
|
|
Packit |
a6ee4b |
[transfer none]
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
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a6ee4b |
|
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a6ee4b |
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a6ee4b |
|
|
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a6ee4b |
|
|
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a6ee4b |
|
|
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a6ee4b |
gst_task_get_pool ()
|
|
Packit |
a6ee4b |
GstTaskPool *
|
|
Packit |
a6ee4b |
gst_task_get_pool (GstTask *task);
|
|
Packit |
a6ee4b |
Get the GstTaskPool that this task will use for its streaming
|
|
Packit |
a6ee4b |
threads.
|
|
Packit |
a6ee4b |
MT safe.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Parameters
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
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|
|
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a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
task
|
|
Packit |
a6ee4b |
a GstTask
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
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a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Returns
|
|
Packit |
a6ee4b |
the GstTaskPool used by task
|
|
Packit |
a6ee4b |
. gst_object_unref()
|
|
Packit |
a6ee4b |
after usage.
|
|
Packit |
a6ee4b |
[transfer full]
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
GstTaskThreadFunc ()
|
|
Packit |
a6ee4b |
void
|
|
Packit |
a6ee4b |
(*GstTaskThreadFunc) (GstTask *task,
|
|
Packit |
a6ee4b |
GThread *thread,
|
|
Packit |
a6ee4b |
gpointer user_data);
|
|
Packit |
a6ee4b |
Custom GstTask thread callback functions that can be installed.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Parameters
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
task
|
|
Packit |
a6ee4b |
The GstTask
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
thread
|
|
Packit |
a6ee4b |
The GThread
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
user_data
|
|
Packit |
a6ee4b |
user data
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
gst_task_set_enter_callback ()
|
|
Packit |
a6ee4b |
void
|
|
Packit |
a6ee4b |
gst_task_set_enter_callback (GstTask *task,
|
|
Packit |
a6ee4b |
GstTaskThreadFunc enter_func,
|
|
Packit |
a6ee4b |
gpointer user_data,
|
|
Packit |
a6ee4b |
GDestroyNotify notify);
|
|
Packit |
a6ee4b |
Call enter_func
|
|
Packit |
a6ee4b |
when the task function of task
|
|
Packit |
a6ee4b |
is entered. user_data
|
|
Packit |
a6ee4b |
will
|
|
Packit |
a6ee4b |
be passed to enter_func
|
|
Packit |
a6ee4b |
and notify
|
|
Packit |
a6ee4b |
will be called when user_data
|
|
Packit |
a6ee4b |
is no
|
|
Packit |
a6ee4b |
longer referenced.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Parameters
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
task
|
|
Packit |
a6ee4b |
The GstTask to use
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
enter_func
|
|
Packit |
a6ee4b |
a GstTaskThreadFunc.
|
|
Packit |
a6ee4b |
[in]
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
user_data
|
|
Packit |
a6ee4b |
user data passed to enter_func
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
notify
|
|
Packit |
a6ee4b |
called when user_data
|
|
Packit |
a6ee4b |
is no longer referenced
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
gst_task_set_leave_callback ()
|
|
Packit |
a6ee4b |
void
|
|
Packit |
a6ee4b |
gst_task_set_leave_callback (GstTask *task,
|
|
Packit |
a6ee4b |
GstTaskThreadFunc leave_func,
|
|
Packit |
a6ee4b |
gpointer user_data,
|
|
Packit |
a6ee4b |
GDestroyNotify notify);
|
|
Packit |
a6ee4b |
Call leave_func
|
|
Packit |
a6ee4b |
when the task function of task
|
|
Packit |
a6ee4b |
is left. user_data
|
|
Packit |
a6ee4b |
will
|
|
Packit |
a6ee4b |
be passed to leave_func
|
|
Packit |
a6ee4b |
and notify
|
|
Packit |
a6ee4b |
will be called when user_data
|
|
Packit |
a6ee4b |
is no
|
|
Packit |
a6ee4b |
longer referenced.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Parameters
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
task
|
|
Packit |
a6ee4b |
The GstTask to use
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
leave_func
|
|
Packit |
a6ee4b |
a GstTaskThreadFunc.
|
|
Packit |
a6ee4b |
[in]
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
user_data
|
|
Packit |
a6ee4b |
user data passed to leave_func
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
notify
|
|
Packit |
a6ee4b |
called when user_data
|
|
Packit |
a6ee4b |
is no longer referenced
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
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a6ee4b |
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a6ee4b |
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a6ee4b |
gst_task_get_state ()
|
|
Packit |
a6ee4b |
GstTaskState
|
|
Packit |
a6ee4b |
gst_task_get_state (GstTask *task);
|
|
Packit |
a6ee4b |
Get the current state of the task.
|
|
Packit |
a6ee4b |
|
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Packit |
a6ee4b |
Parameters
|
|
Packit |
a6ee4b |
|
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Packit |
a6ee4b |
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Packit |
a6ee4b |
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Packit |
a6ee4b |
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Packit |
a6ee4b |
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Packit |
a6ee4b |
|
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Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
task
|
|
Packit |
a6ee4b |
The GstTask to query
|
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Packit |
a6ee4b |
|
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Packit |
a6ee4b |
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Packit |
a6ee4b |
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Packit |
a6ee4b |
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a6ee4b |
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|
Packit |
a6ee4b |
Returns
|
|
Packit |
a6ee4b |
The GstTaskState of the task
|
|
Packit |
a6ee4b |
MT safe.
|
|
Packit |
a6ee4b |
|
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Packit |
a6ee4b |
|
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Packit |
a6ee4b |
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Packit |
a6ee4b |
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Packit |
a6ee4b |
gst_task_set_state ()
|
|
Packit |
a6ee4b |
gboolean
|
|
Packit |
a6ee4b |
gst_task_set_state (GstTask *task,
|
|
Packit |
a6ee4b |
GstTaskState state);
|
|
Packit |
a6ee4b |
Sets the state of task
|
|
Packit |
a6ee4b |
to state
|
|
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a6ee4b |
.
|
|
Packit |
a6ee4b |
The task
|
|
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a6ee4b |
must have a lock associated with it using
|
|
Packit |
a6ee4b |
gst_task_set_lock() when going to GST_TASK_STARTED or GST_TASK_PAUSED or
|
|
Packit |
a6ee4b |
this function will return FALSE.
|
|
Packit |
a6ee4b |
MT safe.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Parameters
|
|
Packit |
a6ee4b |
|
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Packit |
a6ee4b |
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Packit |
a6ee4b |
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Packit |
a6ee4b |
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Packit |
a6ee4b |
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Packit |
a6ee4b |
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Packit |
a6ee4b |
|
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Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
task
|
|
Packit |
a6ee4b |
a GstTask
|
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Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
state
|
|
Packit |
a6ee4b |
the new task state
|
|
Packit |
a6ee4b |
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a6ee4b |
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a6ee4b |
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a6ee4b |
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a6ee4b |
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a6ee4b |
|
|
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a6ee4b |
Returns
|
|
Packit |
a6ee4b |
TRUE if the state could be changed.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
gst_task_pause ()
|
|
Packit |
a6ee4b |
gboolean
|
|
Packit |
a6ee4b |
gst_task_pause (GstTask *task);
|
|
Packit |
a6ee4b |
Pauses task
|
|
Packit |
a6ee4b |
. This method can also be called on a task in the
|
|
Packit |
a6ee4b |
stopped state, in which case a thread will be started and will remain
|
|
Packit |
a6ee4b |
in the paused state. This function does not wait for the task to complete
|
|
Packit |
a6ee4b |
the paused state.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Parameters
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
task
|
|
Packit |
a6ee4b |
The GstTask to pause
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Returns
|
|
Packit |
a6ee4b |
TRUE if the task could be paused.
|
|
Packit |
a6ee4b |
MT safe.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
gst_task_start ()
|
|
Packit |
a6ee4b |
gboolean
|
|
Packit |
a6ee4b |
gst_task_start (GstTask *task);
|
|
Packit |
a6ee4b |
Starts task
|
|
Packit |
a6ee4b |
. The task
|
|
Packit |
a6ee4b |
must have a lock associated with it using
|
|
Packit |
a6ee4b |
gst_task_set_lock() or this function will return FALSE.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Parameters
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
task
|
|
Packit |
a6ee4b |
The GstTask to start
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Returns
|
|
Packit |
a6ee4b |
TRUE if the task could be started.
|
|
Packit |
a6ee4b |
MT safe.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
gst_task_stop ()
|
|
Packit |
a6ee4b |
gboolean
|
|
Packit |
a6ee4b |
gst_task_stop (GstTask *task);
|
|
Packit |
a6ee4b |
Stops task
|
|
Packit |
a6ee4b |
. This method merely schedules the task to stop and
|
|
Packit |
a6ee4b |
will not wait for the task to have completely stopped. Use
|
|
Packit |
a6ee4b |
gst_task_join() to stop and wait for completion.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Parameters
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
task
|
|
Packit |
a6ee4b |
The GstTask to stop
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Returns
|
|
Packit |
a6ee4b |
TRUE if the task could be stopped.
|
|
Packit |
a6ee4b |
MT safe.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
gst_task_join ()
|
|
Packit |
a6ee4b |
gboolean
|
|
Packit |
a6ee4b |
gst_task_join (GstTask *task);
|
|
Packit |
a6ee4b |
Joins task
|
|
Packit |
a6ee4b |
. After this call, it is safe to unref the task
|
|
Packit |
a6ee4b |
and clean up the lock set with gst_task_set_lock().
|
|
Packit |
a6ee4b |
The task will automatically be stopped with this call.
|
|
Packit |
a6ee4b |
This function cannot be called from within a task function as this
|
|
Packit |
a6ee4b |
would cause a deadlock. The function will detect this and print a
|
|
Packit |
a6ee4b |
g_warning.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Parameters
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
task
|
|
Packit |
a6ee4b |
The GstTask to join
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Returns
|
|
Packit |
a6ee4b |
TRUE if the task could be joined.
|
|
Packit |
a6ee4b |
MT safe.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
gst_task_cleanup_all ()
|
|
Packit |
a6ee4b |
void
|
|
Packit |
a6ee4b |
gst_task_cleanup_all (void);
|
|
Packit |
a6ee4b |
Wait for all tasks to be stopped. This is mainly used internally
|
|
Packit |
a6ee4b |
to ensure proper cleanup of internal data structures in test suites.
|
|
Packit |
a6ee4b |
MT safe.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Types and Values
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
struct GstTask
|
|
Packit |
a6ee4b |
struct GstTask {
|
|
Packit |
a6ee4b |
GstTaskState state;
|
|
Packit |
a6ee4b |
GCond cond;
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
GRecMutex *lock;
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
GstTaskFunction func;
|
|
Packit |
a6ee4b |
gpointer user_data;
|
|
Packit |
a6ee4b |
GDestroyNotify notify;
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
gboolean running;
|
|
Packit |
a6ee4b |
};
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
The GstTask object.
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Members
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
GstTaskState state;
|
|
Packit |
a6ee4b |
the state of the task
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
GCond cond;
|
|
Packit |
a6ee4b |
used to pause/resume the task
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
GRecMutex *lock;
|
|
Packit |
a6ee4b |
The lock taken when iterating the task function
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
GstTaskFunction func;
|
|
Packit |
a6ee4b |
the function executed by this task
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
gpointer user_data;
|
|
Packit |
a6ee4b |
user_data passed to the task function
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
GDestroyNotify notify;
|
|
Packit |
a6ee4b |
GDestroyNotify for user_data
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
gboolean running;
|
|
Packit |
a6ee4b |
a flag indicating that the task is running
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
enum GstTaskState
|
|
Packit |
a6ee4b |
The different states a task can be in
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Members
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
GST_TASK_STARTED
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
the task is started and running
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
GST_TASK_STOPPED
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
the task is stopped
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
GST_TASK_PAUSED
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
the task is paused
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
See Also
|
|
Packit |
a6ee4b |
GstElement, GstPad
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
|
|
Packit |
a6ee4b |
Generated by GTK-Doc V1.28
|
|
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a6ee4b |
</body>
|
|
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a6ee4b |
</html>
|