一般情况下编写代码都是以plugin为单位,而pad往往作为element的成员变量,因此gst_pad_push和gst_pad_pull_range的入参往往是 element->srcpad 或者 element->sinkpad 。 可以使用gst_pad_add_probe为pad注册一下回调函数,这些回调函数在不同数据(dataflow、events、queries)到达pad时会被触发,有的还会阻塞运行。 Pa...
gst_pad_remove_probe is used to remove a previously installed probe and unblock blocking probes if any. 在pad 中经过的数据流,events 以及 queries 可通过 probes 来监测,方法是 gst_pad_add_probe Pad have an offset that can be retrieved with gst_pad_get_offset. This offset will be applied ...
gst_pad_add_probe (osd_sink_pad, GST_PAD_PROBE_TYPE_BUFFER, probe_debug, tag, NULL); } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 可以填写sink,也可以填写src,二者有什么区别?简单来说: sink是输入,即上游Element向本元素发送的数据。 src是输出,本元素向下游元素发送的数据。也就是输入数据经过本...
比如以下代码: static void probe_add(GstElement* element, char* tag){GstPad* osd_sink_pad = gst_element_get_static_pad (element, "sink");if (osd_sink_pad){gst_pad_add_probe (osd_sink_pad, GST_PAD_PROBE_TYPE_BUFFER, probe_debug, tag, NULL);}} 可以填写sink,也可以填写src,二者有什...
Inside the probe, call DeepStream API nvds_add_reference_timestamp_meta() at /opt/nvidia/deepstream/deepstream/sources/includes/nvds_latency_meta.h Pseudocode reference: static GstPadProbeReturn probe_on_audiodecoder_src_pad (GstPad * pad, GstPadProbeInfo * info, gpointer u_data) { GstBuffer...
问Gstreamer RTSP ``gst launch-1.0`等效C代码EN在gstreamer开发中，一般开发思路为：寻找命令行实现---命令行验证---将命令行集成到代码中---代码工程化。当然如果你要代码更优雅一点，可以用命令行用对应的API来实现，本节来总结一下gstreamer开发中场景常用的工具。
- GstPad: Fix race condition causing the same probe to be called multiple times - Fix occasional deadlocks on windows when outputting debug logging - Fix debug levels being applied in the wrong order - GIR annotation fixes for bindings - audiomixer, audioaggregator: fix some negotiation...
pad. - datetime: Add constructors to create datetimes with timestamps in microseconds, gst_date_time_new_from_unix_epoch_local_time_usecs() and gst_date_time_new_from_unix_epoch_utc_usecs(). - gst_debug_log_get_lines() gets debug log lines formatted in the same way the defau...
gst_element_add_pad(GST_ELEMENT_CAST(sink), sink->ghostpad); gst_pad_add_probe(sink->ghostpad, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM, gst_hls_sink_ghost_event_probe, sink,NULL); gst_pad_add_probe(sink->ghostpad, GST_PAD_PROBE_TYPE_BUFFER, ...
The concept behind the Interpipes project is to simplify the construction of GStreamer applications, which often has the complexity of requiring dynamic pipelines. It transforms the construction process from low level pad probe manipulation to the higher level setting an element's parameter value. App...