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A little pluggy to make sense out of the random chunks we get from multifilesrc.
Original commit message from CVS: * configure.ac: * gst/videoparse/Makefile.am: * gst/videoparse/gstvideoparse.c: A little pluggy to make sense out of the random chunks we get from multifilesrc.
This commit is contained in:
parent
4af761a436
commit
70431177ff
4 changed files with 400 additions and 0 deletions
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@ -1,3 +1,11 @@
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2006-11-10 David Schleef <ds@schleef.org>
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* configure.ac:
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* gst/videoparse/Makefile.am:
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* gst/videoparse/gstvideoparse.c:
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A little pluggy to make sense out of the random chunks we get
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from multifilesrc.
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2006-11-10 David Schleef <ds@schleef.org>
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* gst/multifile/Makefile.am:
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@ -91,6 +91,7 @@ GST_PLUGINS_ALL="\
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qtdemux \
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tta \
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videocrop \
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videoparse \
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xingheader \
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"
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@ -808,6 +809,7 @@ gst/speed/Makefile
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gst/qtdemux/Makefile
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gst/tta/Makefile
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gst/videocrop/Makefile
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gst/videoparse/Makefile
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gst/xingheader/Makefile
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gst-libs/Makefile
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gst-libs/gst/Makefile
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8
gst/videoparse/Makefile.am
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8
gst/videoparse/Makefile.am
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@ -0,0 +1,8 @@
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plugin_LTLIBRARIES = libgstvideoparse.la
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libgstvideoparse_la_SOURCES = gstvideoparse.c
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libgstvideoparse_la_CFLAGS = $(GST_CFLAGS)
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libgstvideoparse_la_LIBADD = $(GST_LIBS) $(GST_BASE_LIBS)
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libgstvideoparse_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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382
gst/videoparse/gstvideoparse.c
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382
gst/videoparse/gstvideoparse.c
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/* GStreamer
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* Copyright (C) 2006 David A. Schleef <ds@schleef.org>
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*
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* gstvideoparse.c:
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:element-videoparse
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* @short_description: parses a byte stream into video frames
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*
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* Converts a byte stream into video frames.
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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/gstbasetransform.h>
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#define GST_TYPE_VIDEO_PARSE \
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(gst_video_parse_get_type())
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#define GST_VIDEO_PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_PARSE,GstVideoParse))
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#define GST_VIDEO_PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_PARSE,GstVideoParseClass))
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#define GST_IS_VIDEO_PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_PARSE))
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#define GST_IS_VIDEO_PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_PARSE))
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typedef struct _GstVideoParse GstVideoParse;
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typedef struct _GstVideoParseClass GstVideoParseClass;
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struct _GstVideoParse
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{
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GstElement parent;
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GstPad *sinkpad;
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GstPad *srcpad;
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int fps_n;
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int fps_d;
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int frame_num;
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GstSegment segment;
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int negotiated;
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};
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struct _GstVideoParseClass
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{
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GstElementClass parent_class;
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};
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static void gst_video_parse_dispose (GObject * object);
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static void gst_video_parse_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_video_parse_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstFlowReturn gst_video_parse_chain (GstPad * pad, GstBuffer * buffer);
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static gboolean gst_video_parse_event (GstPad * pad, GstEvent * event);
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static gboolean gst_video_parse_set_caps (GstPad * pad, GstCaps * caps);
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static gboolean gst_video_parse_src_query (GstPad * pad, GstQuery * query);
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static GstStaticPadTemplate gst_video_parse_src_pad_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate gst_video_parse_sink_pad_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_ANY);
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GST_DEBUG_CATEGORY_STATIC (gst_video_parse_debug);
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#define GST_CAT_DEFAULT gst_video_parse_debug
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static const GstElementDetails gst_video_parse_details =
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GST_ELEMENT_DETAILS ("Video Parse",
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"Filter/Video",
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"Converts stream into video frames",
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"David Schleef <ds@schleef.org>");
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enum
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{
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ARG_0
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};
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GST_BOILERPLATE (GstVideoParse, gst_video_parse, GstElement, GST_TYPE_ELEMENT);
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static void
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gst_video_parse_base_init (gpointer g_class)
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{
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
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GST_DEBUG_CATEGORY_INIT (gst_video_parse_debug, "videoparse", 0,
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"videoparse element");
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&gst_video_parse_src_pad_template));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&gst_video_parse_sink_pad_template));
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gst_element_class_set_details (gstelement_class, &gst_video_parse_details);
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}
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static void
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gst_video_parse_class_init (GstVideoParseClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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//GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
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gobject_class->set_property = gst_video_parse_set_property;
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gobject_class->get_property = gst_video_parse_get_property;
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gobject_class->dispose = gst_video_parse_dispose;
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}
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static void
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gst_video_parse_init (GstVideoParse * vp, GstVideoParseClass * g_class)
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{
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vp->sinkpad =
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gst_pad_new_from_static_template (&gst_video_parse_sink_pad_template,
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"sink");
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gst_element_add_pad (GST_ELEMENT (vp), vp->sinkpad);
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gst_pad_set_chain_function (vp->sinkpad, gst_video_parse_chain);
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gst_pad_set_event_function (vp->sinkpad, gst_video_parse_event);
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vp->srcpad =
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gst_pad_new_from_static_template (&gst_video_parse_src_pad_template,
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"src");
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gst_element_add_pad (GST_ELEMENT (vp), vp->srcpad);
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gst_pad_set_setcaps_function (vp->srcpad, gst_video_parse_set_caps);
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gst_pad_set_query_function (vp->srcpad, gst_video_parse_src_query);
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}
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static void
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gst_video_parse_dispose (GObject * object)
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{
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//GstVideoParse *vp = GST_VIDEO_PARSE (object);
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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static void
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gst_video_parse_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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//GstVideoParse *vp = GST_VIDEO_PARSE (object);
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switch (prop_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_video_parse_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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//GstVideoParse *vp = GST_VIDEO_PARSE (object);
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switch (prop_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static gboolean
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gst_video_parse_negotiate (GstVideoParse * vp)
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{
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GstCaps *caps;
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gboolean ret = FALSE;
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caps = gst_pad_peer_get_caps (vp->srcpad);
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caps = gst_caps_make_writable (caps);
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gst_caps_truncate (caps);
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if (!gst_caps_is_empty (caps)) {
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gst_pad_fixate_caps (vp->srcpad, caps);
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if (gst_caps_is_any (caps)) {
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ret = TRUE;
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} else if (gst_caps_is_fixed (caps)) {
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/* yay, fixed caps, use those then */
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gst_pad_set_caps (vp->srcpad, caps);
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ret = TRUE;
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}
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}
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gst_caps_unref (caps);
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return ret;
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}
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static GstFlowReturn
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gst_video_parse_chain (GstPad * pad, GstBuffer * buffer)
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{
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GstVideoParse *vp = GST_VIDEO_PARSE (gst_pad_get_parent (pad));
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GstFlowReturn ret;
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GST_INFO ("here");
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if (!vp->negotiated) {
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gst_video_parse_negotiate (vp);
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vp->negotiated = TRUE;
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}
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if (vp->fps_n) {
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GST_BUFFER_TIMESTAMP (buffer) = vp->segment.start +
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gst_util_uint64_scale (vp->frame_num, GST_SECOND * vp->fps_d,
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vp->fps_n);
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GST_BUFFER_DURATION (buffer) =
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gst_util_uint64_scale (GST_SECOND, vp->fps_d, vp->fps_n);
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} else {
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GST_BUFFER_TIMESTAMP (buffer) = vp->segment.start;
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GST_BUFFER_DURATION (buffer) = GST_CLOCK_TIME_NONE;
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}
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gst_buffer_set_caps (buffer, GST_PAD_CAPS (vp->srcpad));
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vp->frame_num++;
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ret = gst_pad_push (vp->srcpad, buffer);
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gst_object_unref (vp);
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return ret;
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}
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static gboolean
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gst_video_parse_event (GstPad * pad, GstEvent * event)
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{
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GstVideoParse *vp = GST_VIDEO_PARSE (gst_pad_get_parent (pad));
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gboolean ret;
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_NEWSEGMENT:
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{
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GstClockTimeDiff start, stop, time;
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gdouble rate, arate;
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gboolean update;
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GstFormat format;
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gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
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&start, &stop, &time);
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if (format == GST_FORMAT_TIME) {
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gst_segment_set_newsegment_full (&vp->segment, update, rate, arate,
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format, start, stop, time);
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GST_DEBUG_OBJECT (vp, "update segment: %" GST_SEGMENT_FORMAT,
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&vp->segment);
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} else {
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GST_ERROR_OBJECT (vp,
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"Segment doesn't have GST_FORMAT_TIME format (%d)", format);
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gst_event_unref (event);
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gst_object_unref (vp);
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return FALSE;
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}
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break;
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}
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default:
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break;
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}
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ret = gst_pad_push_event (vp->srcpad, event);
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gst_object_unref (vp);
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return ret;
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}
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static gboolean
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gst_video_parse_set_caps (GstPad * pad, GstCaps * caps)
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{
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GstVideoParse *vp = GST_VIDEO_PARSE (gst_pad_get_parent (pad));
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GstStructure *s;
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s = gst_caps_get_structure (caps, 0);
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vp->fps_n = 0;
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vp->fps_d = 1;
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gst_structure_get_fraction (s, "framerate", &vp->fps_n, &vp->fps_d);
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GST_ERROR_OBJECT (vp, "framerate %d/%d", vp->fps_n, vp->fps_d);
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gst_object_unref (vp);
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return TRUE;
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}
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static gboolean
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gst_video_parse_src_query (GstPad * pad, GstQuery * query)
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{
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GstVideoParse *vp = GST_VIDEO_PARSE (gst_pad_get_parent (pad));
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gboolean ret = TRUE;
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if (GST_QUERY_TYPE (query) == GST_QUERY_CONVERT) {
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GstFormat src_fmt, dest_fmt;
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gint64 src_val, dest_val;
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gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
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if (src_fmt == dest_fmt) {
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dest_val = src_val;
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} else if (src_fmt == GST_FORMAT_DEFAULT && dest_fmt == GST_FORMAT_TIME) {
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/* frames to time */
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if (vp->fps_n) {
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dest_val = gst_util_uint64_scale (src_val, vp->fps_d * GST_SECOND,
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vp->fps_d);
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} else {
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dest_val = 0;
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}
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} else if (src_fmt == GST_FORMAT_DEFAULT && dest_fmt == GST_FORMAT_TIME) {
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/* time to frames */
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if (vp->fps_n) {
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dest_val = gst_util_uint64_scale (src_val, vp->fps_n,
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vp->fps_d * GST_SECOND);
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} else {
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dest_val = 0;
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}
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} else {
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GST_DEBUG_OBJECT (vp, "query failed");
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ret = FALSE;
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}
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gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
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} else {
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ret = GST_ELEMENT_CLASS (parent_class)->query (GST_ELEMENT (vp), query);
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}
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gst_object_unref (vp);
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return ret;
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}
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static gboolean
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plugin_init (GstPlugin * plugin)
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{
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gst_element_register (plugin, "videoparse", GST_RANK_NONE,
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gst_video_parse_get_type ());
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return TRUE;
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}
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GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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"videoparse",
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"Parses byte streams into video frames",
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plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
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