[Bug 706478] New: GstAppSrc: new gst_app_src_push_sample() API for appsrc
GStreamer (bugzilla.gnome.org)
bugzilla at gnome.org
Wed Aug 21 03:40:43 PDT 2013
https://bugzilla.gnome.org/show_bug.cgi?id=706478
GStreamer | gst-plugins-base | git
Summary: GstAppSrc: new gst_app_src_push_sample() API for
appsrc
Classification: Platform
Product: GStreamer
Version: git
OS/Version: All
Status: UNCONFIRMED
Severity: enhancement
Priority: Normal
Component: gst-plugins-base
AssignedTo: gstreamer-bugs at lists.freedesktop.org
ReportedBy: kishore.arepalli at gmail.com
QAContact: gstreamer-bugs at lists.freedesktop.org
GNOME version: ---
Would be better if both GstAppSrc and GstAppSink operate on GstSample.
Use case: If a pipeline bridge is created between appsink of a pipeline to
appsrc of another pipeline then, always buffer copy has to be made before
pushing the buffer to GstAppSrc, because there is no API on appsrc which can
accept GstSample of GstSample of the GstAppSink (gst_app_sink_pull_sample API).
There is an overhead of gst_buffer_copy of every buffer in the following code
(Present API)
GstSample *sample = gst_app_sink_pull_sample(appsink);
gst_app_src_push_buffer(appsrc,
gst_buffer_copy(gst_sample_get_buffer(sample)));
gst_sample_unref(sample);
// push_buffer api takes owner ship of the GstBuffer, so we can't just pass
the buffer of the sample instead we have to copy the buffer and push to appsrc
With the proposed API for GstAppSrc (gst_app_src_push_sample())
GstSample *sample = gst_app_sink_pull_sample(appsink);
gst_app_src_push_sample(appsrc, sample); // which will take owner ship of the
sample
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