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gst-libs/gst/app/gstappsrc.*: Add is-live property.

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Original commit message from CVS:
* gst-libs/gst/app/gstappsrc.c: (gst_app_src_class_init),
(gst_app_src_init), (gst_app_src_set_property),
(gst_app_src_get_property), (gst_app_src_push_buffer):
* gst-libs/gst/app/gstappsrc.h:
Add is-live property.
Add some more docs.
This commit is contained in:
Wim Taymans 2008-11-07 17:35:46 +00:00
parent 862cc7ddd2
commit 5e8f80a9f5
3 changed files with 84 additions and 8 deletions
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9
ChangeLog
View file

@ -1,3 +1,12 @@
2008-11-07 Wim Taymans <wim.taymans@collabora.co.uk>
* gst-libs/gst/app/gstappsrc.c: (gst_app_src_class_init),
(gst_app_src_init), (gst_app_src_set_property),
(gst_app_src_get_property), (gst_app_src_push_buffer):
* gst-libs/gst/app/gstappsrc.h:
Add is-live property.
Add some more docs.
2008-11-06 Thijs Vermeir <thijsvermeir@gmail.com>
* configure.ac:

81
gst-libs/gst/app/gstappsrc.c
View file

@ -18,6 +18,13 @@
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-appsrc
*
* The appsrc element can be used by applications to insert data into a
* GStreamer pipeline.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
@ -58,6 +65,7 @@ enum
#define DEFAULT_PROP_MAX_BYTES 200000
#define DEFAULT_PROP_FORMAT GST_FORMAT_BYTES
#define DEFAULT_PROP_BLOCK FALSE
#define DEFAULT_PROP_IS_LIVE FALSE
enum
{
@ -68,6 +76,7 @@ enum
PROP_MAX_BYTES,
PROP_FORMAT,
PROP_BLOCK,
PROP_IS_LIVE,
PROP_LAST
};
@ -161,39 +170,83 @@ gst_app_src_class_init (GstAppSrcClass * klass)
gobject_class->set_property = gst_app_src_set_property;
gobject_class->get_property = gst_app_src_get_property;
/**
* GstAppSrc::caps
*
* The GstCaps that will negotiated downstream and will be put
* on outgoing buffers.
*/
g_object_class_install_property (gobject_class, PROP_CAPS,
g_param_spec_boxed ("caps", "Caps",
"The allowed caps for the src pad", GST_TYPE_CAPS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstAppSrc::format
*
* The format to use for segment events. When the source is producing
* timestamped buffers this property should be set to GST_FORMAT_TIME.
*/
g_object_class_install_property (gobject_class, PROP_FORMAT,
g_param_spec_enum ("format", "Format",
"The format of the segment events and seek", GST_TYPE_FORMAT,
DEFAULT_PROP_FORMAT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstAppSrc::size
*
* The total size in bytes of the data stream. If the total size is known, it
* is recommended to configure it with this property.
*/
g_object_class_install_property (gobject_class, PROP_SIZE,
g_param_spec_int64 ("size", "Size",
"The size of the data stream (-1 if unknown)",
-1, G_MAXINT64, DEFAULT_PROP_SIZE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstAppSrc::stream-type
*
* The type of stream that this source is producing. For seekable streams the
* application should connect to the seek-data signal.
*/
g_object_class_install_property (gobject_class, PROP_STREAM_TYPE,
g_param_spec_enum ("stream-type", "Stream Type",
"the type of the stream", GST_TYPE_APP_STREAM_TYPE,
DEFAULT_PROP_STREAM_TYPE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstAppSrc::max-bytes
*
* The maximum amount of bytes that can be queued internally.
* After the maximum amount of bytes are queued, appsrc will emit the
* "enough-data" signal.
*/
g_object_class_install_property (gobject_class, PROP_MAX_BYTES,
g_param_spec_uint64 ("max-bytes", "Max bytes",
"The maximum number of bytes to queue internally (0 = unlimited)",
0, G_MAXUINT64, DEFAULT_PROP_MAX_BYTES,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstAppSrc::block
*
* When max-bytes are queued and after the enough-data signal has been emited,
* block any further push-buffer calls until the amount of queued bytes drops
* below the max-bytes limit.
*/
g_object_class_install_property (gobject_class, PROP_BLOCK,
g_param_spec_boolean ("block", "Block",
"Block push-buffer when max-bytes are queued",
DEFAULT_PROP_BLOCK, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstAppSrc::is-live
*
* Instruct the source to behave like a live source. This includes that it
* will only push out buffers in the PLAYING state.
*/
g_object_class_install_property (gobject_class, PROP_IS_LIVE,
g_param_spec_boolean ("is-live", "Is Live",
"Whether to act as a live source",
DEFAULT_PROP_IS_LIVE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstAppSrc::need-data:
* @appsrc: the appsrc element that emited the signal
@ -250,6 +303,9 @@ gst_app_src_class_init (GstAppSrcClass * klass)
*
* Adds a buffer to the queue of buffers that the appsrc element will
* push to its source pad. This function will take ownership of @buffer.
*
* When the block property is TRUE, this function can block until free space
* becomes available in the queue.
*/
gst_app_src_signals[SIGNAL_PUSH_BUFFER] =
g_signal_new ("push-buffer", G_TYPE_FROM_CLASS (klass),
@ -295,6 +351,8 @@ gst_app_src_init (GstAppSrc * appsrc, GstAppSrcClass * klass)
appsrc->max_bytes = DEFAULT_PROP_MAX_BYTES;
appsrc->format = DEFAULT_PROP_FORMAT;
appsrc->block = DEFAULT_PROP_BLOCK;
gst_base_src_set_live (GST_BASE_SRC (appsrc), DEFAULT_PROP_IS_LIVE);
}
static void
@ -357,6 +415,10 @@ gst_app_src_set_property (GObject * object, guint prop_id,
case PROP_BLOCK:
appsrc->block = g_value_get_boolean (value);
break;
case PROP_IS_LIVE:
gst_base_src_set_live (GST_BASE_SRC (appsrc),
g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -396,6 +458,9 @@ gst_app_src_get_property (GObject * object, guint prop_id, GValue * value,
case PROP_BLOCK:
g_value_set_boolean (value, appsrc->block);
break;
case PROP_IS_LIVE:
g_value_set_boolean (value, gst_base_src_is_live (GST_BASE_SRC (appsrc)));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -882,7 +947,7 @@ gst_app_src_push_buffer (GstAppSrc * appsrc, GstBuffer * buffer)
if (appsrc->is_eos)
goto eos;
if (appsrc->queued_bytes >= appsrc->max_bytes) {
if (appsrc->max_bytes && appsrc->queued_bytes >= appsrc->max_bytes) {
GST_DEBUG_OBJECT (appsrc, "queue filled (%" G_GUINT64_FORMAT " >= %"
G_GUINT64_FORMAT ")", appsrc->queued_bytes, appsrc->max_bytes);
@ -904,7 +969,9 @@ gst_app_src_push_buffer (GstAppSrc * appsrc, GstBuffer * buffer)
* flush. */
g_cond_wait (appsrc->cond, appsrc->mutex);
} else {
/* no need to wait for free space, we just pump data into the queue */
/* no need to wait for free space, we just pump more data into the
* queue hoping that the caller reacts to the enough-data signal and
* stops pushing buffers. */
break;
}
} else

2
gst-libs/gst/app/gstappsrc.h
View file

@ -44,7 +44,7 @@ typedef struct _GstAppSrcClass GstAppSrcClass;
* @GST_APP_STREAM_TYPE_STREAM: No seeking is supported in the stream, such as a
* live stream.
* @GST_APP_STREAM_TYPE_SEEKABLE: The stream is seekable but seeking might not
* be very fast, such as data from a webserver.
* be very fast, such as data from a webserver.
* @GST_APP_STREAM_TYPE_RANDOM_ACCESS: The stream is seekable and seeking is fast,
* such as in a local file.
*