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328 lines
9.2 KiB
C
328 lines
9.2 KiB
C
/* GStreamer
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* Copyright (C) 2011 David A. Schleef <ds@schleef.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
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* Boston, MA 02110-1335, USA.
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*/
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/**
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* SECTION:element-gstintervideosink
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*
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* The intervideosink element does FIXME stuff.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch -v fakesrc ! intervideosink ! FIXME ! fakesink
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* ]|
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* FIXME Describe what the pipeline does.
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* </refsect2>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gst/base/gstbasesink.h>
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#include <gst/video/video.h>
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#include "gstintervideosink.h"
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GST_DEBUG_CATEGORY_STATIC (gst_inter_video_sink_debug_category);
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#define GST_CAT_DEFAULT gst_inter_video_sink_debug_category
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/* prototypes */
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static void gst_inter_video_sink_set_property (GObject * object,
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guint property_id, const GValue * value, GParamSpec * pspec);
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static void gst_inter_video_sink_get_property (GObject * object,
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guint property_id, GValue * value, GParamSpec * pspec);
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static void gst_inter_video_sink_dispose (GObject * object);
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static void gst_inter_video_sink_finalize (GObject * object);
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static GstCaps *gst_inter_video_sink_get_caps (GstBaseSink * sink);
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static gboolean gst_inter_video_sink_set_caps (GstBaseSink * sink,
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GstCaps * caps);
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static GstFlowReturn gst_inter_video_sink_buffer_alloc (GstBaseSink * sink,
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guint64 offset, guint size, GstCaps * caps, GstBuffer ** buf);
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static void gst_inter_video_sink_get_times (GstBaseSink * sink,
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GstBuffer * buffer, GstClockTime * start, GstClockTime * end);
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static gboolean gst_inter_video_sink_start (GstBaseSink * sink);
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static gboolean gst_inter_video_sink_stop (GstBaseSink * sink);
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static gboolean gst_inter_video_sink_unlock (GstBaseSink * sink);
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static gboolean gst_inter_video_sink_event (GstBaseSink * sink,
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GstEvent * event);
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static GstFlowReturn gst_inter_video_sink_preroll (GstBaseSink * sink,
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GstBuffer * buffer);
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static GstFlowReturn gst_inter_video_sink_render (GstBaseSink * sink,
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GstBuffer * buffer);
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static GstStateChangeReturn gst_inter_video_sink_async_play (GstBaseSink *
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sink);
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static gboolean gst_inter_video_sink_activate_pull (GstBaseSink * sink,
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gboolean active);
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static gboolean gst_inter_video_sink_unlock_stop (GstBaseSink * sink);
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enum
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{
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PROP_0
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};
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/* pad templates */
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static GstStaticPadTemplate gst_inter_video_sink_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
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);
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/* class initialization */
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#define DEBUG_INIT(bla) \
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GST_DEBUG_CATEGORY_INIT (gst_inter_video_sink_debug_category, "intervideosink", 0, \
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"debug category for intervideosink element");
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GST_BOILERPLATE_FULL (GstInterVideoSink, gst_inter_video_sink, GstBaseSink,
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GST_TYPE_BASE_SINK, DEBUG_INIT);
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static void
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gst_inter_video_sink_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_static_pad_template (element_class,
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&gst_inter_video_sink_sink_template);
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gst_element_class_set_details_simple (element_class, "FIXME Long name",
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"Generic", "FIXME Description", "FIXME <fixme@example.com>");
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}
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static void
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gst_inter_video_sink_class_init (GstInterVideoSinkClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstBaseSinkClass *base_sink_class = GST_BASE_SINK_CLASS (klass);
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gobject_class->set_property = gst_inter_video_sink_set_property;
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gobject_class->get_property = gst_inter_video_sink_get_property;
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gobject_class->dispose = gst_inter_video_sink_dispose;
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gobject_class->finalize = gst_inter_video_sink_finalize;
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base_sink_class->get_caps = GST_DEBUG_FUNCPTR (gst_inter_video_sink_get_caps);
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base_sink_class->set_caps = GST_DEBUG_FUNCPTR (gst_inter_video_sink_set_caps);
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if (0)
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base_sink_class->buffer_alloc =
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GST_DEBUG_FUNCPTR (gst_inter_video_sink_buffer_alloc);
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base_sink_class->get_times =
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GST_DEBUG_FUNCPTR (gst_inter_video_sink_get_times);
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base_sink_class->start = GST_DEBUG_FUNCPTR (gst_inter_video_sink_start);
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base_sink_class->stop = GST_DEBUG_FUNCPTR (gst_inter_video_sink_stop);
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base_sink_class->unlock = GST_DEBUG_FUNCPTR (gst_inter_video_sink_unlock);
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if (0)
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base_sink_class->event = GST_DEBUG_FUNCPTR (gst_inter_video_sink_event);
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//if (0)
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base_sink_class->preroll = GST_DEBUG_FUNCPTR (gst_inter_video_sink_preroll);
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base_sink_class->render = GST_DEBUG_FUNCPTR (gst_inter_video_sink_render);
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if (0)
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base_sink_class->async_play =
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GST_DEBUG_FUNCPTR (gst_inter_video_sink_async_play);
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if (0)
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base_sink_class->activate_pull =
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GST_DEBUG_FUNCPTR (gst_inter_video_sink_activate_pull);
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base_sink_class->unlock_stop =
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GST_DEBUG_FUNCPTR (gst_inter_video_sink_unlock_stop);
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}
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static void
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gst_inter_video_sink_init (GstInterVideoSink * intervideosink,
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GstInterVideoSinkClass * intervideosink_class)
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{
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intervideosink->surface = gst_inter_surface_get ("default");
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}
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void
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gst_inter_video_sink_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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/* GstInterVideoSink *intervideosink = GST_INTER_VIDEO_SINK (object); */
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switch (property_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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void
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gst_inter_video_sink_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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/* GstInterVideoSink *intervideosink = GST_INTER_VIDEO_SINK (object); */
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switch (property_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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void
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gst_inter_video_sink_dispose (GObject * object)
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{
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/* GstInterVideoSink *intervideosink = GST_INTER_VIDEO_SINK (object); */
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/* clean up as possible. may be called multiple times */
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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void
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gst_inter_video_sink_finalize (GObject * object)
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{
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/* GstInterVideoSink *intervideosink = GST_INTER_VIDEO_SINK (object); */
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/* clean up object here */
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static GstCaps *
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gst_inter_video_sink_get_caps (GstBaseSink * sink)
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{
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return NULL;
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}
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static gboolean
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gst_inter_video_sink_set_caps (GstBaseSink * sink, GstCaps * caps)
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{
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return TRUE;
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}
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static GstFlowReturn
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gst_inter_video_sink_buffer_alloc (GstBaseSink * sink, guint64 offset,
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guint size, GstCaps * caps, GstBuffer ** buf)
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{
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return GST_FLOW_ERROR;
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}
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static void
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gst_inter_video_sink_get_times (GstBaseSink * sink, GstBuffer * buffer,
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GstClockTime * start, GstClockTime * end)
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{
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GstInterVideoSink *intervideosink = GST_INTER_VIDEO_SINK (sink);
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if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
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*start = GST_BUFFER_TIMESTAMP (buffer);
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if (GST_BUFFER_DURATION_IS_VALID (buffer)) {
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*end = *start + GST_BUFFER_DURATION (buffer);
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} else {
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if (intervideosink->fps_n > 0) {
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*end = *start +
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gst_util_uint64_scale_int (GST_SECOND, intervideosink->fps_d,
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intervideosink->fps_n);
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}
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}
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}
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}
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static gboolean
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gst_inter_video_sink_start (GstBaseSink * sink)
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{
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return TRUE;
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}
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static gboolean
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gst_inter_video_sink_stop (GstBaseSink * sink)
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{
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GstInterVideoSink *intervideosink = GST_INTER_VIDEO_SINK (sink);
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g_mutex_lock (intervideosink->surface->mutex);
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if (intervideosink->surface->video_buffer) {
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gst_buffer_unref (intervideosink->surface->video_buffer);
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}
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intervideosink->surface->video_buffer = NULL;
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g_mutex_unlock (intervideosink->surface->mutex);
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return TRUE;
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}
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static gboolean
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gst_inter_video_sink_unlock (GstBaseSink * sink)
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{
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return TRUE;
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}
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static gboolean
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gst_inter_video_sink_event (GstBaseSink * sink, GstEvent * event)
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{
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return TRUE;
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}
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static GstFlowReturn
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gst_inter_video_sink_preroll (GstBaseSink * sink, GstBuffer * buffer)
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{
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//return gst_inter_video_sink_render (sink, buffer);
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return GST_FLOW_OK;
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}
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static GstFlowReturn
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gst_inter_video_sink_render (GstBaseSink * sink, GstBuffer * buffer)
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{
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GstInterVideoSink *intervideosink = GST_INTER_VIDEO_SINK (sink);
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g_mutex_lock (intervideosink->surface->mutex);
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if (intervideosink->surface->video_buffer) {
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gst_buffer_unref (intervideosink->surface->video_buffer);
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}
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intervideosink->surface->video_buffer = gst_buffer_ref (buffer);
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intervideosink->surface->video_buffer_count = 0;
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g_mutex_unlock (intervideosink->surface->mutex);
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return GST_FLOW_OK;
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}
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static GstStateChangeReturn
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gst_inter_video_sink_async_play (GstBaseSink * sink)
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{
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return GST_STATE_CHANGE_SUCCESS;
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}
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static gboolean
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gst_inter_video_sink_activate_pull (GstBaseSink * sink, gboolean active)
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{
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return TRUE;
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}
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static gboolean
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gst_inter_video_sink_unlock_stop (GstBaseSink * sink)
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{
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return TRUE;
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}
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