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gst-libs/gst/app/gstappsink.*: Add properties, signals and actions to access the element even without linking to the ...

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Original commit message from CVS:
* gst-libs/gst/app/gstappsink.c: (gst_app_marshal_OBJECT__VOID),
(gst_app_sink_class_init), (gst_app_sink_init),
(gst_app_sink_dispose), (gst_app_sink_finalize),
(gst_app_sink_set_property), (gst_app_sink_get_property),
(gst_app_sink_flush_unlocked), (gst_app_sink_start),
(gst_app_sink_event), (gst_app_sink_getcaps),
(gst_app_sink_set_caps), (gst_app_sink_get_caps),
(gst_app_sink_is_eos), (gst_app_sink_pull_preroll),
(gst_app_sink_pull_buffer):
* gst-libs/gst/app/gstappsink.h:
Add properties, signals and actions to access the element even without
linking to the library.
Fix some method names and signatures.
This commit is contained in:
Wim Taymans 2007-09-20 13:59:50 +00:00
parent b020c43021
commit b5af210ba2
3 changed files with 240 additions and 45 deletions
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16
ChangeLog
View file

@ -1,3 +1,19 @@
2007-09-20 Wim Taymans <wim.taymans@gmail.com>
* gst-libs/gst/app/gstappsink.c: (gst_app_marshal_OBJECT__VOID),
(gst_app_sink_class_init), (gst_app_sink_init),
(gst_app_sink_dispose), (gst_app_sink_finalize),
(gst_app_sink_set_property), (gst_app_sink_get_property),
(gst_app_sink_flush_unlocked), (gst_app_sink_start),
(gst_app_sink_event), (gst_app_sink_getcaps),
(gst_app_sink_set_caps), (gst_app_sink_get_caps),
(gst_app_sink_is_eos), (gst_app_sink_pull_preroll),
(gst_app_sink_pull_buffer):
* gst-libs/gst/app/gstappsink.h:
Add properties, signals and actions to access the element even without
linking to the library.
Fix some method names and signatures.
2007-09-19 Wim Taymans <wim.taymans@gmail.com>
Patch by: Jonathan Matthew <jonathan at kaolin wh9 net>

253
gst-libs/gst/app/gstappsink.c
View file

@ -23,6 +23,7 @@
#include <gst/gst.h>
#include <gst/base/gstbasesink.h>
#include <gst/gstbuffer.h>
#include <string.h>
@ -40,7 +41,23 @@ GST_ELEMENT_DETAILS ("AppSink",
enum
{
PROP_0
/* signals */
SIGNAL_EOS,
SIGNAL_NEW_PREROLL,
SIGNAL_NEW_BUFFER,
/* acions */
SIGNAL_PULL_PREROLL,
SIGNAL_PULL_BUFFER,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_CAPS,
PROP_EOS
};
static GstStaticPadTemplate gst_app_sink_template =
@ -49,11 +66,14 @@ GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static void gst_app_sink_dispose (GObject * object);
static void gst_app_sink_finalize (GObject * object);
static void gst_app_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_app_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_app_sink_dispose (GObject * object);
static gboolean gst_app_sink_start (GstBaseSink * psink);
static gboolean gst_app_sink_stop (GstBaseSink * psink);
static gboolean gst_app_sink_event (GstBaseSink * sink, GstEvent * event);
@ -61,10 +81,44 @@ static GstFlowReturn gst_app_sink_preroll (GstBaseSink * psink,
GstBuffer * buffer);
static GstFlowReturn gst_app_sink_render (GstBaseSink * psink,
GstBuffer * buffer);
static GstCaps *gst_app_sink_get_caps (GstBaseSink * psink);
static GstCaps *gst_app_sink_getcaps (GstBaseSink * psink);
static guint gst_app_sink_signals[LAST_SIGNAL] = { 0 };
GST_BOILERPLATE (GstAppSink, gst_app_sink, GstBaseSink, GST_TYPE_BASE_SINK);
void
gst_app_marshal_OBJECT__VOID (GClosure * closure,
GValue * return_value,
guint n_param_values,
const GValue * param_values,
gpointer invocation_hint, gpointer marshal_data)
{
typedef GstBuffer *(*GMarshalFunc_OBJECT__VOID) (gpointer data1,
gpointer data2);
register GMarshalFunc_OBJECT__VOID callback;
register GCClosure *cc = (GCClosure *) closure;
register gpointer data1, data2;
GstBuffer *v_return;
g_return_if_fail (return_value != NULL);
g_return_if_fail (n_param_values == 1);
if (G_CCLOSURE_SWAP_DATA (closure)) {
data1 = closure->data;
data2 = g_value_peek_pointer (param_values + 0);
} else {
data1 = g_value_peek_pointer (param_values + 0);
data2 = closure->data;
}
callback =
(GMarshalFunc_OBJECT__VOID) (marshal_data ? marshal_data : cc->callback);
v_return = callback (data1, data2);
gst_value_take_buffer (return_value, v_return);
}
static void
gst_app_sink_base_init (gpointer g_class)
{
@ -84,16 +138,94 @@ gst_app_sink_class_init (GstAppSinkClass * klass)
GObjectClass *gobject_class = (GObjectClass *) klass;
GstBaseSinkClass *basesink_class = (GstBaseSinkClass *) klass;
gobject_class->dispose = gst_app_sink_dispose;
gobject_class->finalize = gst_app_sink_finalize;
gobject_class->set_property = gst_app_sink_set_property;
gobject_class->get_property = gst_app_sink_get_property;
gobject_class->dispose = gst_app_sink_dispose;
g_object_class_install_property (gobject_class, PROP_CAPS,
g_param_spec_boxed ("caps", "Caps",
"The caps of the sink pad", GST_TYPE_CAPS, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_EOS,
g_param_spec_boolean ("eos", "EOS",
"Check if the sink is EOS", TRUE, G_PARAM_READABLE));
/**
* GstAppSink::eos:
* @appsink: the appsink element that emited the signal
*
* Signal that the end-of-stream has been reached.
*/
gst_app_sink_signals[SIGNAL_EOS] =
g_signal_new ("eos", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstAppSinkClass, eos),
NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0, G_TYPE_NONE);
/**
* GstAppSink::new-preroll:
* @appsink: the appsink element that emited the signal
* @buffer: the buffer that caused the preroll
*
* Signal that a new preroll buffer is available.
*/
gst_app_sink_signals[SIGNAL_NEW_PREROLL] =
g_signal_new ("new-preroll", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstAppSinkClass, new_preroll),
NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 0,
GST_TYPE_BUFFER);
/**
* GstAppSink::new-buffer:
* @appsink: the appsink element that emited the signal
* @buffer: the buffer that is available
*
* Signal that a new buffer is available.
*/
gst_app_sink_signals[SIGNAL_NEW_BUFFER] =
g_signal_new ("new-buffer", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstAppSinkClass, new_buffer),
NULL, NULL, g_cclosure_marshal_VOID__OBJECT, G_TYPE_NONE, 0,
GST_TYPE_BUFFER);
/**
* GstAppSink::pull-preroll:
* @appsink: the appsink element to emit this signal on
*
* Get the last preroll buffer on @appsink.
*/
gst_app_sink_signals[SIGNAL_PULL_PREROLL] =
g_signal_new ("pull-preroll", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstAppSinkClass, pull_preroll), NULL,
NULL, gst_app_marshal_OBJECT__VOID, GST_TYPE_BUFFER, 0, G_TYPE_NONE);
/**
* GstAppSink::pull-buffer:
* @appsink: the appsink element to emit this signal on
*
* Get the next buffer buffer on @appsink.
*/
gst_app_sink_signals[SIGNAL_PULL_PREROLL] =
g_signal_new ("pull-buffer", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstAppSinkClass, pull_buffer),
NULL, NULL, gst_app_marshal_OBJECT__VOID, GST_TYPE_BUFFER, 0,
G_TYPE_NONE);
basesink_class->start = gst_app_sink_start;
basesink_class->stop = gst_app_sink_stop;
basesink_class->event = gst_app_sink_event;
basesink_class->preroll = gst_app_sink_preroll;
basesink_class->render = gst_app_sink_render;
basesink_class->get_caps = gst_app_sink_get_caps;
basesink_class->get_caps = gst_app_sink_getcaps;
klass->pull_preroll = gst_app_sink_pull_preroll;
klass->pull_buffer = gst_app_sink_pull_buffer;
}
static void
gst_app_sink_init (GstAppSink * appsink, GstAppSinkClass * klass)
{
appsink->mutex = g_mutex_new ();
appsink->cond = g_cond_new ();
appsink->queue = g_queue_new ();
}
static void
@ -109,29 +241,21 @@ gst_app_sink_dispose (GObject * obj)
gst_buffer_unref (appsink->preroll);
appsink->preroll = NULL;
}
if (appsink->mutex) {
g_mutex_free (appsink->mutex);
appsink->mutex = NULL;
}
if (appsink->cond) {
g_cond_free (appsink->cond);
appsink->cond = NULL;
}
if (appsink->queue) {
g_queue_foreach (appsink->queue, (GFunc) gst_mini_object_unref, NULL);
g_queue_free (appsink->queue);
appsink->queue = NULL;
}
g_queue_foreach (appsink->queue, (GFunc) gst_mini_object_unref, NULL);
G_OBJECT_CLASS (parent_class)->dispose (obj);
}
static void
gst_app_sink_init (GstAppSink * appsink, GstAppSinkClass * klass)
gst_app_sink_finalize (GObject * obj)
{
appsink->mutex = g_mutex_new ();
appsink->cond = g_cond_new ();
appsink->queue = g_queue_new ();
GstAppSink *appsink = GST_APP_SINK (obj);
g_mutex_free (appsink->mutex);
g_cond_free (appsink->cond);
g_queue_free (appsink->queue);
G_OBJECT_CLASS (parent_class)->finalize (obj);
}
static void
@ -140,13 +264,14 @@ gst_app_sink_set_property (GObject * object, guint prop_id,
{
GstAppSink *appsink = GST_APP_SINK (object);
GST_OBJECT_LOCK (appsink);
switch (prop_id) {
case PROP_CAPS:
gst_app_sink_set_caps (appsink, gst_value_get_caps (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (appsink);
}
static void
@ -155,13 +280,24 @@ gst_app_sink_get_property (GObject * object, guint prop_id, GValue * value,
{
GstAppSink *appsink = GST_APP_SINK (object);
GST_OBJECT_LOCK (appsink);
switch (prop_id) {
case PROP_CAPS:
{
GstCaps *caps;
caps = gst_app_sink_get_caps (appsink);
gst_value_set_caps (value, caps);
if (caps)
gst_caps_unref (caps);
break;
}
case PROP_EOS:
g_value_set_boolean (value, gst_app_sink_is_eos (appsink));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (appsink);
}
static void
@ -170,7 +306,7 @@ gst_app_sink_flush_unlocked (GstAppSink * appsink)
GstBuffer *buffer;
GST_DEBUG_OBJECT (appsink, "flushing appsink");
appsink->end_of_stream = FALSE;
appsink->is_eos = FALSE;
gst_buffer_replace (&appsink->preroll, NULL);
while ((buffer = g_queue_pop_head (appsink->queue)))
gst_buffer_unref (buffer);
@ -183,7 +319,7 @@ gst_app_sink_start (GstBaseSink * psink)
GstAppSink *appsink = GST_APP_SINK (psink);
g_mutex_lock (appsink->mutex);
appsink->end_of_stream = FALSE;
appsink->is_eos = FALSE;
appsink->started = TRUE;
GST_DEBUG_OBJECT (appsink, "starting");
g_mutex_unlock (appsink->mutex);
@ -214,7 +350,7 @@ gst_app_sink_event (GstBaseSink * sink, GstEvent * event)
case GST_EVENT_EOS:
g_mutex_lock (appsink->mutex);
GST_DEBUG_OBJECT (appsink, "receiving EOS");
appsink->end_of_stream = TRUE;
appsink->is_eos = TRUE;
g_cond_signal (appsink->cond);
g_mutex_unlock (appsink->mutex);
break;
@ -261,7 +397,7 @@ gst_app_sink_render (GstBaseSink * psink, GstBuffer * buffer)
}
static GstCaps *
gst_app_sink_get_caps (GstBaseSink * psink)
gst_app_sink_getcaps (GstBaseSink * psink)
{
GstCaps *caps;
@ -284,24 +420,57 @@ gst_app_sink_get_caps (GstBaseSink * psink)
* @caps: caps to set
*
* Set the capabilities on the appsink element. This function takes
* a ref of the caps structure. After calling this method, the sink will only
* a copy of the caps structure. After calling this method, the sink will only
* accept caps that match @caps. If @caps is non-fixed, you must check the caps
* on the buffers to get the actual used caps.
* on the buffers to get the actual used caps.
*/
void
gst_app_sink_set_caps (GstAppSink * appsink, GstCaps * caps)
gst_app_sink_set_caps (GstAppSink * appsink, const GstCaps * caps)
{
GstCaps *old;
g_return_if_fail (appsink != NULL);
g_return_if_fail (GST_IS_APP_SINK (appsink));
GST_OBJECT_LOCK (appsink);
GST_DEBUG_OBJECT (appsink, "setting caps to %" GST_PTR_FORMAT, caps);
gst_caps_replace (&appsink->caps, caps);
old = appsink->caps;
if (caps)
appsink->caps = gst_caps_copy (caps);
else
appsink->caps = NULL;
if (old)
gst_caps_unref (old);
GST_OBJECT_UNLOCK (appsink);
}
/**
* gst_app_sink_end_of_stream:
* gst_app_sink_get_caps:
* @appsink: a #GstAppSink
*
* Get the configured caps on @appsink.
*
* Returns: the #GstCaps accepted by the sink. gst_caps_unref() after usage.
*/
GstCaps *
gst_app_sink_get_caps (GstAppSink * appsink)
{
GstCaps *caps;
g_return_val_if_fail (appsink != NULL, NULL);
g_return_val_if_fail (GST_IS_APP_SINK (appsink), NULL);
GST_OBJECT_LOCK (appsink);
if ((caps = appsink->caps))
gst_caps_ref (caps);
GST_DEBUG_OBJECT (appsink, "getting caps of %" GST_PTR_FORMAT, caps);
GST_OBJECT_UNLOCK (appsink);
return caps;
}
/**
* gst_app_sink_is_eos:
* @appsink: a #GstAppSink
*
* Check if @appsink is EOS, which is when no more buffers can be pulled because
@ -313,7 +482,7 @@ gst_app_sink_set_caps (GstAppSink * appsink, GstCaps * caps)
* Returns: %TRUE if no more buffers can be pulled and the appsink is EOS.
*/
gboolean
gst_app_sink_end_of_stream (GstAppSink * appsink)
gst_app_sink_is_eos (GstAppSink * appsink)
{
gboolean ret;
@ -324,7 +493,7 @@ gst_app_sink_end_of_stream (GstAppSink * appsink)
if (!appsink->started)
goto not_started;
if (appsink->end_of_stream && g_queue_is_empty (appsink->queue)) {
if (appsink->is_eos && g_queue_is_empty (appsink->queue)) {
GST_DEBUG_OBJECT (appsink, "we are EOS and the queue is empty");
ret = TRUE;
} else {
@ -358,8 +527,8 @@ not_started:
* Note that the preroll buffer will also be returned as the first buffer
* when calling gst_app_sink_pull_buffer().
*
* If an EOS event was received before any buffers, this function also returns
* %NULL.
* If an EOS event was received before any buffers, this function returns
* %NULL. Use gst_app_sink_is_eos () to check for the EOS condition.
*
* This function blocks until a preroll buffer or EOS is received or the appsink
* element is set to the READY/NULL state.
@ -384,7 +553,7 @@ gst_app_sink_pull_preroll (GstAppSink * appsink)
if (appsink->preroll != NULL)
break;
if (appsink->end_of_stream)
if (appsink->is_eos)
goto eos;
/* nothing to return, wait */
@ -426,7 +595,7 @@ not_started:
* especially when dealing with raw video frames.
*
* If an EOS event was received before any buffers, this function returns
* %NULL.
* %NULL. Use gst_app_sink_is_eos () to check for the EOS condition.
*
* Returns: a #GstBuffer or NULL when the appsink is stopped or EOS.
*/
@ -448,7 +617,7 @@ gst_app_sink_pull_buffer (GstAppSink * appsink)
if (!g_queue_is_empty (appsink->queue))
break;
if (appsink->end_of_stream)
if (appsink->is_eos)
goto eos;
/* nothing to return, wait */

16
gst-libs/gst/app/gstappsink.h
View file

@ -51,21 +51,31 @@ struct _GstAppSink
GQueue *queue;
GstBuffer *preroll;
gboolean started;
gboolean end_of_stream;
gboolean is_eos;
};
struct _GstAppSinkClass
{
GstBaseSinkClass basesink_class;
/* signals */
gboolean (*eos) (GstAppSink *sink);
gboolean (*new_preroll) (GstAppSink *sink);
gboolean (*new_buffer) (GstAppSink *sink);
/* actions */
GstBuffer * (*pull_preroll) (GstAppSink *sink);
GstBuffer * (*pull_buffer) (GstAppSink *sink);
};
GType gst_app_sink_get_type(void);
GST_DEBUG_CATEGORY_EXTERN (app_sink_debug);
void gst_app_sink_set_caps (GstAppSink *appsink, GstCaps *caps);
void gst_app_sink_set_caps (GstAppSink *appsink, const GstCaps *caps);
GstCaps * gst_app_sink_get_caps (GstAppSink *appsink);
gboolean gst_app_sink_end_of_stream (GstAppSink *appsink);
gboolean gst_app_sink_is_eos (GstAppSink *appsink);
GstBuffer * gst_app_sink_pull_preroll (GstAppSink *appsink);
GstBuffer * gst_app_sink_pull_buffer (GstAppSink *appsink);