mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-05 09:00:54 +00:00
257 lines
7.1 KiB
C
257 lines
7.1 KiB
C
/* vim: set filetype=c: */
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% ClassName
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GstBaseSink
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% TYPE_CLASS_NAME
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GST_TYPE_BASE_SINK
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% pads
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sinkpad-simple
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% pkg-config
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gstreamer-base-1.0
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% includes
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#include <gst/base/gstbasesink.h>
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% prototypes
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static GstCaps *gst_replace_get_caps (GstBaseSink * sink, GstCaps * filter);
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static gboolean gst_replace_set_caps (GstBaseSink * sink, GstCaps * caps);
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static GstCaps *gst_replace_fixate (GstBaseSink * sink, GstCaps * caps);
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static gboolean gst_replace_activate_pull (GstBaseSink * sink, gboolean active);
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static void gst_replace_get_times (GstBaseSink * sink, GstBuffer * buffer,
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GstClockTime * start, GstClockTime * end);
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static gboolean gst_replace_propose_allocation (GstBaseSink * sink,
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GstQuery * query);
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static gboolean gst_replace_start (GstBaseSink * sink);
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static gboolean gst_replace_stop (GstBaseSink * sink);
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static gboolean gst_replace_unlock (GstBaseSink * sink);
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static gboolean gst_replace_unlock_stop (GstBaseSink * sink);
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static gboolean gst_replace_query (GstBaseSink * sink, GstQuery * query);
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static gboolean gst_replace_event (GstBaseSink * sink, GstEvent * event);
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static GstFlowReturn gst_replace_wait_event (GstBaseSink * sink,
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GstEvent * event);
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static GstFlowReturn gst_replace_prepare (GstBaseSink * sink,
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GstBuffer * buffer);
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static GstFlowReturn gst_replace_prepare_list (GstBaseSink * sink,
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GstBufferList * buffer_list);
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static GstFlowReturn gst_replace_preroll (GstBaseSink * sink,
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GstBuffer * buffer);
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static GstFlowReturn gst_replace_render (GstBaseSink * sink,
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GstBuffer * buffer);
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static GstFlowReturn gst_replace_render_list (GstBaseSink * sink,
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GstBufferList * buffer_list);
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% declare-class
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GstBaseSinkClass *base_sink_class = GST_BASE_SINK_CLASS (klass);
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% set-methods
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base_sink_class->get_caps = GST_DEBUG_FUNCPTR (gst_replace_get_caps);
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base_sink_class->set_caps = GST_DEBUG_FUNCPTR (gst_replace_set_caps);
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base_sink_class->fixate = GST_DEBUG_FUNCPTR (gst_replace_fixate);
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base_sink_class->activate_pull = GST_DEBUG_FUNCPTR (gst_replace_activate_pull);
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base_sink_class->get_times = GST_DEBUG_FUNCPTR (gst_replace_get_times);
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base_sink_class->propose_allocation = GST_DEBUG_FUNCPTR (gst_replace_propose_allocation);
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base_sink_class->start = GST_DEBUG_FUNCPTR (gst_replace_start);
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base_sink_class->stop = GST_DEBUG_FUNCPTR (gst_replace_stop);
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base_sink_class->unlock = GST_DEBUG_FUNCPTR (gst_replace_unlock);
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base_sink_class->unlock_stop = GST_DEBUG_FUNCPTR (gst_replace_unlock_stop);
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base_sink_class->query = GST_DEBUG_FUNCPTR (gst_replace_query);
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base_sink_class->event = GST_DEBUG_FUNCPTR (gst_replace_event);
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base_sink_class->wait_event = GST_DEBUG_FUNCPTR (gst_replace_wait_event);
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base_sink_class->prepare = GST_DEBUG_FUNCPTR (gst_replace_prepare);
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base_sink_class->prepare_list = GST_DEBUG_FUNCPTR (gst_replace_prepare_list);
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base_sink_class->preroll = GST_DEBUG_FUNCPTR (gst_replace_preroll);
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base_sink_class->render = GST_DEBUG_FUNCPTR (gst_replace_render);
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base_sink_class->render_list = GST_DEBUG_FUNCPTR (gst_replace_render_list);
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% methods
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static GstCaps *
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gst_replace_get_caps (GstBaseSink * sink, GstCaps * filter)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "get_caps");
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return NULL;
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}
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/* notify subclass of new caps */
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static gboolean
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gst_replace_set_caps (GstBaseSink * sink, GstCaps * caps)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "set_caps");
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return TRUE;
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}
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/* fixate sink caps during pull-mode negotiation */
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static GstCaps *
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gst_replace_fixate (GstBaseSink * sink, GstCaps * caps)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "fixate");
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return NULL;
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}
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/* start or stop a pulling thread */
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static gboolean
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gst_replace_activate_pull (GstBaseSink * sink, gboolean active)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "activate_pull");
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return TRUE;
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}
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/* get the start and end times for syncing on this buffer */
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static void
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gst_replace_get_times (GstBaseSink * sink, GstBuffer * buffer,
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GstClockTime * start, GstClockTime * end)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "get_times");
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}
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/* propose allocation parameters for upstream */
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static gboolean
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gst_replace_propose_allocation (GstBaseSink * sink, GstQuery * query)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "propose_allocation");
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return TRUE;
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}
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/* start and stop processing, ideal for opening/closing the resource */
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static gboolean
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gst_replace_start (GstBaseSink * sink)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "start");
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return TRUE;
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}
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static gboolean
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gst_replace_stop (GstBaseSink * sink)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "stop");
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return TRUE;
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}
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/* unlock any pending access to the resource. subclasses should unlock
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* any function ASAP. */
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static gboolean
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gst_replace_unlock (GstBaseSink * sink)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "unlock");
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return TRUE;
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}
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/* Clear a previously indicated unlock request not that unlocking is
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* complete. Sub-classes should clear any command queue or indicator they
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* set during unlock */
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static gboolean
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gst_replace_unlock_stop (GstBaseSink * sink)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "unlock_stop");
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return TRUE;
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}
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/* notify subclass of query */
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static gboolean
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gst_replace_query (GstBaseSink * sink, GstQuery * query)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "query");
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return TRUE;
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}
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/* notify subclass of event */
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static gboolean
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gst_replace_event (GstBaseSink * sink, GstEvent * event)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "event");
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return TRUE;
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}
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/* wait for eos or gap, subclasses should chain up to parent first */
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static GstFlowReturn
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gst_replace_wait_event (GstBaseSink * sink, GstEvent * event)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "wait_event");
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return GST_FLOW_OK;
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}
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/* notify subclass of buffer or list before doing sync */
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static GstFlowReturn
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gst_replace_prepare (GstBaseSink * sink, GstBuffer * buffer)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "prepare");
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return GST_FLOW_OK;
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}
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static GstFlowReturn
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gst_replace_prepare_list (GstBaseSink * sink, GstBufferList * buffer_list)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "prepare_list");
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return GST_FLOW_OK;
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}
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/* notify subclass of preroll buffer or real buffer */
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static GstFlowReturn
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gst_replace_preroll (GstBaseSink * sink, GstBuffer * buffer)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "preroll");
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return GST_FLOW_OK;
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}
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static GstFlowReturn
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gst_replace_render (GstBaseSink * sink, GstBuffer * buffer)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "render");
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return GST_FLOW_OK;
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}
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/* Render a BufferList */
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static GstFlowReturn
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gst_replace_render_list (GstBaseSink * sink, GstBufferList * buffer_list)
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{
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GstReplace *replace = GST_REPLACE (sink);
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GST_DEBUG_OBJECT (replace, "render_list");
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return GST_FLOW_OK;
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}
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% end
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