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libs/gst/base/gstbasesrc.*: Add ::check_get_range() vfunc to GstBaseSrc (#332611), provide default implementation, an...

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Original commit message from CVS:
* libs/gst/base/gstbasesrc.c: (gst_base_src_class_init),
(gst_base_src_init), (gst_base_src_pad_check_get_range),
(gst_base_src_default_check_get_range):
* libs/gst/base/gstbasesrc.h:
Add ::check_get_range() vfunc to GstBaseSrc (#332611),
provide default implementation, and rename
gst_base_src_check_get_range() to
gst_base_src_pad_check_get_range() for clarity.
This commit is contained in:
Tim-Philipp Müller 2006-03-06 19:55:06 +00:00
parent e8b98ad786
commit b5161fda6a
3 changed files with 49 additions and 6 deletions
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11
ChangeLog
View file

@ -1,3 +1,14 @@
2006-03-06 Tim-Philipp Müller <tim at centricular dot net>
* libs/gst/base/gstbasesrc.c: (gst_base_src_class_init),
(gst_base_src_init), (gst_base_src_pad_check_get_range),
(gst_base_src_default_check_get_range):
* libs/gst/base/gstbasesrc.h:
Add ::check_get_range() vfunc to GstBaseSrc (#332611),
provide default implementation, and rename
gst_base_src_check_get_range() to
gst_base_src_pad_check_get_range() for clarity.
2006-03-06 Wim Taymans <wim@fluendo.com> 2006-03-06 Wim Taymans <wim@fluendo.com>
* libs/gst/base/gstbasesink.c: (gst_base_sink_class_init): * libs/gst/base/gstbasesink.c: (gst_base_sink_class_init):

34
libs/gst/base/gstbasesrc.c
View file

@ -270,7 +270,8 @@ static GstStateChangeReturn gst_base_src_change_state (GstElement * element,
GstStateChange transition); GstStateChange transition);
static void gst_base_src_loop (GstPad * pad); static void gst_base_src_loop (GstPad * pad);
static gboolean gst_base_src_check_get_range (GstPad * pad); static gboolean gst_base_src_pad_check_get_range (GstPad * pad);
static gboolean gst_base_src_default_check_get_range (GstBaseSrc * bsrc);
static GstFlowReturn gst_base_src_pad_get_range (GstPad * pad, guint64 offset, static GstFlowReturn gst_base_src_pad_get_range (GstPad * pad, guint64 offset,
guint length, GstBuffer ** buf); guint length, GstBuffer ** buf);
static GstFlowReturn gst_base_src_get_range (GstBaseSrc * src, guint64 offset, static GstFlowReturn gst_base_src_get_range (GstBaseSrc * src, guint64 offset,
@ -320,6 +321,8 @@ gst_base_src_class_init (GstBaseSrcClass * klass)
klass->event = GST_DEBUG_FUNCPTR (gst_base_src_default_event); klass->event = GST_DEBUG_FUNCPTR (gst_base_src_default_event);
klass->do_seek = GST_DEBUG_FUNCPTR (gst_base_src_default_do_seek); klass->do_seek = GST_DEBUG_FUNCPTR (gst_base_src_default_do_seek);
klass->query = GST_DEBUG_FUNCPTR (gst_base_src_default_query); klass->query = GST_DEBUG_FUNCPTR (gst_base_src_default_query);
klass->check_get_range =
GST_DEBUG_FUNCPTR (gst_base_src_default_check_get_range);
} }
static void static void
@ -355,7 +358,7 @@ gst_base_src_init (GstBaseSrc * basesrc, gpointer g_class)
GST_DEBUG_FUNCPTR (gst_base_src_event_handler)); GST_DEBUG_FUNCPTR (gst_base_src_event_handler));
gst_pad_set_query_function (pad, GST_DEBUG_FUNCPTR (gst_base_src_query)); gst_pad_set_query_function (pad, GST_DEBUG_FUNCPTR (gst_base_src_query));
gst_pad_set_checkgetrange_function (pad, gst_pad_set_checkgetrange_function (pad,
GST_DEBUG_FUNCPTR (gst_base_src_check_get_range)); GST_DEBUG_FUNCPTR (gst_base_src_pad_check_get_range));
gst_pad_set_getrange_function (pad, gst_pad_set_getrange_function (pad,
GST_DEBUG_FUNCPTR (gst_base_src_pad_get_range)); GST_DEBUG_FUNCPTR (gst_base_src_pad_get_range));
gst_pad_set_getcaps_function (pad, GST_DEBUG_FUNCPTR (gst_base_src_getcaps)); gst_pad_set_getcaps_function (pad, GST_DEBUG_FUNCPTR (gst_base_src_getcaps));
@ -1267,14 +1270,37 @@ gst_base_src_pad_get_range (GstPad * pad, guint64 offset, guint length,
} }
static gboolean static gboolean
gst_base_src_check_get_range (GstPad * pad) gst_base_src_pad_check_get_range (GstPad * pad)
{ {
GstBaseSrcClass *bclass;
GstBaseSrc *src; GstBaseSrc *src;
gboolean res; gboolean res;
src = GST_BASE_SRC (gst_pad_get_parent (pad)); src = GST_BASE_SRC (gst_pad_get_parent (pad));
bclass = GST_BASE_SRC_GET_CLASS (src);
if (bclass->check_get_range == NULL) {
GST_WARNING_OBJECT (src, "no check_get_range function set");
return FALSE;
}
res = bclass->check_get_range (src);
GST_LOG_OBJECT (src, "%s() returned %d",
GST_DEBUG_FUNCPTR_NAME (bclass->check_get_range), (gint) res);
gst_object_unref (src);
return res;
}
static gboolean
gst_base_src_default_check_get_range (GstBaseSrc * src)
{
gboolean res;
if (!GST_OBJECT_FLAG_IS_SET (src, GST_BASE_SRC_STARTED)) { if (!GST_OBJECT_FLAG_IS_SET (src, GST_BASE_SRC_STARTED)) {
GST_LOG_OBJECT (src, "doing start/stop to check get_range support");
gst_base_src_start (src); gst_base_src_start (src);
gst_base_src_stop (src); gst_base_src_stop (src);
} }
@ -1284,8 +1310,6 @@ gst_base_src_check_get_range (GstPad * pad)
* flag and is set in the _start() method. */ * flag and is set in the _start() method. */
res = src->random_access; res = src->random_access;
gst_object_unref (src);
return res; return res;
} }

10
libs/gst/base/gstbasesrc.h
View file

@ -168,8 +168,16 @@ struct _GstBaseSrcClass {
/* notify subclasses of a query */ /* notify subclasses of a query */
gboolean (*query) (GstBaseSrc *src, GstQuery *query); gboolean (*query) (GstBaseSrc *src, GstQuery *query);
/* check whether the source would support pull-based operation if
* it were to be opened now. This vfunc is optional, but should be
* implemented if possible to avoid unnecessary start/stop cycles.
* The default implementation will open and close the resource to
* find out whether get_range is supported and that is usually
* undesirable. */
gboolean (*check_get_range) (GstBaseSrc *src);
/*< private >*/ /*< private >*/
gpointer _gst_reserved[GST_PADDING_LARGE - 2]; gpointer _gst_reserved[GST_PADDING_LARGE - 3];
}; };
GType gst_base_src_get_type (void); GType gst_base_src_get_type (void);