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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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462 lines
12 KiB
C
462 lines
12 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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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/*#define DEBUG_ENABLED */
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#include <gstvideotestsrc.h>
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#include <videotestsrc.h>
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#include <string.h>
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#include <stdlib.h>
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/* elementfactory information */
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static GstElementDetails videotestsrc_details = {
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"Video test source",
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"Source/Video",
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"LGPL",
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"Creates a test video stream",
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VERSION,
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"David A. Schleef <ds@schleef.org>",
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"(C) 2002",
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};
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/* GstVideotestsrc signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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{
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ARG_0,
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ARG_WIDTH,
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ARG_HEIGHT,
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ARG_FOURCC,
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ARG_RATE,
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ARG_TYPE,
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/* FILL ME */
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};
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static void gst_videotestsrc_class_init (GstVideotestsrcClass * klass);
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static void gst_videotestsrc_init (GstVideotestsrc * videotestsrc);
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static GstElementStateReturn gst_videotestsrc_change_state (GstElement * element);
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static void gst_videotestsrc_set_clock (GstElement *element, GstClock *clock);
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static void gst_videotestsrc_set_pattern (GstVideotestsrc *src, int pattern_type);
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static void gst_videotestsrc_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_videotestsrc_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec);
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static GstBuffer *gst_videotestsrc_get (GstPad * pad);
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static GstElementClass *parent_class = NULL;
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static GstCaps * gst_videotestsrc_get_capslist (void);
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static GstPadTemplate *
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videotestsrc_src_template_factory(void)
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{
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static GstPadTemplate *templ = NULL;
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if(!templ){
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GstCaps *caps = GST_CAPS_NEW("src","video/raw",
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"width", GST_PROPS_INT_RANGE (0, G_MAXINT),
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"height", GST_PROPS_INT_RANGE (0, G_MAXINT));
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caps = gst_caps_intersect(caps, gst_videotestsrc_get_capslist ());
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templ = GST_PAD_TEMPLATE_NEW("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);
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}
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return templ;
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}
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GType
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gst_videotestsrc_get_type (void)
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{
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static GType videotestsrc_type = 0;
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if (!videotestsrc_type) {
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static const GTypeInfo videotestsrc_info = {
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sizeof (GstVideotestsrcClass), NULL,
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NULL,
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(GClassInitFunc) gst_videotestsrc_class_init,
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NULL,
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NULL,
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sizeof (GstVideotestsrc),
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0,
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(GInstanceInitFunc) gst_videotestsrc_init,
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};
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videotestsrc_type =
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g_type_register_static (GST_TYPE_ELEMENT, "GstVideotestsrc", &videotestsrc_info, 0);
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}
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return videotestsrc_type;
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}
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#define GST_TYPE_VIDEOTESTSRC_PATTERN (gst_videotestsrc_pattern_get_type ())
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static GType
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gst_videotestsrc_pattern_get_type (void)
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{
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static GType videotestsrc_pattern_type = 0;
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static GEnumValue pattern_types[] = {
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{ GST_VIDEOTESTSRC_SMPTE, "smpte", "SMPTE 100% color bars" },
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{ GST_VIDEOTESTSRC_SNOW, "snow", "Random (television snow)" },
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{ GST_VIDEOTESTSRC_BLACK, "black", "0% Black" },
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{ 0, NULL, NULL },
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};
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if (!videotestsrc_pattern_type){
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videotestsrc_pattern_type = g_enum_register_static("GstVideotestsrcPattern",
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pattern_types);
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}
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return videotestsrc_pattern_type;
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}
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static void
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gst_videotestsrc_class_init (GstVideotestsrcClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_WIDTH,
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g_param_spec_int ("width", "width", "width",
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G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); /* CHECKME */
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_HEIGHT,
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g_param_spec_int ("height", "height", "height",
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G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); /* CHECKME */
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FOURCC,
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g_param_spec_string ("fourcc", "fourcc", "fourcc",
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NULL, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_RATE,
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g_param_spec_int ("rate", "Rate", "Frame rate",
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1, 100, 30, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TYPE,
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g_param_spec_enum ("pattern", "Pattern", "Type of test pattern to generate",
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GST_TYPE_VIDEOTESTSRC_PATTERN, 1, G_PARAM_READWRITE));
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parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
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gobject_class->set_property = gst_videotestsrc_set_property;
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gobject_class->get_property = gst_videotestsrc_get_property;
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gstelement_class->change_state = gst_videotestsrc_change_state;
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gstelement_class->set_clock = gst_videotestsrc_set_clock;
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}
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static void
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gst_videotestsrc_set_clock (GstElement *element, GstClock *clock)
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{
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GstVideotestsrc *v;
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v = GST_VIDEOTESTSRC (element);
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gst_object_replace ((GstObject **)&v->clock, (GstObject *)clock);
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}
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static GstPadLinkReturn
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gst_videotestsrc_srcconnect (GstPad * pad, GstCaps * caps)
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{
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GstVideotestsrc *videotestsrc;
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GST_DEBUG (0, "gst_videotestsrc_srcconnect");
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videotestsrc = GST_VIDEOTESTSRC (gst_pad_get_parent (pad));
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videotestsrc->fourcc = paintinfo_find_by_caps(caps);
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if(!videotestsrc->fourcc){
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return GST_PAD_LINK_DELAYED;
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}
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printf ("videotestsrc: using fourcc element %p %s\n",
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videotestsrc->fourcc, videotestsrc->fourcc->name);
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gst_caps_get_int (caps, "width", &videotestsrc->width);
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gst_caps_get_int (caps, "height", &videotestsrc->height);
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videotestsrc->bpp = videotestsrc->fourcc->bitspp;
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GST_DEBUG (0, "size %d x %d", videotestsrc->width, videotestsrc->height);
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return GST_PAD_LINK_OK;
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}
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static GstElementStateReturn
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gst_videotestsrc_change_state (GstElement * element)
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{
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GstVideotestsrc *v;
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v = GST_VIDEOTESTSRC (element);
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switch (GST_STATE_TRANSITION (element)) {
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case GST_STATE_PAUSED_TO_PLAYING:
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v->pool = gst_pad_get_bufferpool (v->srcpad);
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break;
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case GST_STATE_PLAYING_TO_PAUSED:
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v->pool = NULL;
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break;
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}
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parent_class->change_state (element);
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return GST_STATE_SUCCESS;
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}
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static GstCaps *
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gst_videotestsrc_get_capslist (void)
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{
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static GstCaps *capslist = NULL;
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GstCaps *caps;
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int i;
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if (capslist)
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return capslist;
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for(i=0;i<n_fourccs;i++){
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caps = paint_get_caps(fourcc_list + i);
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capslist = gst_caps_append(capslist, caps);
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}
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return capslist;
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}
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static GstCaps *
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gst_videotestsrc_getcaps (GstPad * pad, GstCaps * caps)
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{
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GstVideotestsrc *vts;
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GstCaps *caps1;
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GstCaps *caps2;
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vts = GST_VIDEOTESTSRC (gst_pad_get_parent (pad));
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if (vts->forced_format != NULL) {
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struct fourcc_list_struct *fourcc;
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fourcc = paintrect_find_name (vts->forced_format);
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caps1 = paint_get_caps(fourcc);
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} else {
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caps1 = gst_videotestsrc_get_capslist ();
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}
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if(vts->width){
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caps2 = GST_CAPS_NEW("ack","video/raw",
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"width",GST_PROPS_INT(vts->width),
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"height",GST_PROPS_INT(vts->height));
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}else{
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caps2 = GST_CAPS_NEW("ack","video/raw",
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"width",GST_PROPS_INT_RANGE(16,4096),
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"height",GST_PROPS_INT_RANGE(16,4096));
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}
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return gst_caps_intersect(caps1,caps2);
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}
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static void
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gst_videotestsrc_init (GstVideotestsrc * videotestsrc)
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{
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GST_DEBUG (0, "gst_videotestsrc_init");
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videotestsrc->srcpad =
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gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (videotestsrc_src_template_factory), "src");
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gst_pad_set_getcaps_function (videotestsrc->srcpad, gst_videotestsrc_getcaps);
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gst_element_add_pad (GST_ELEMENT (videotestsrc), videotestsrc->srcpad);
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gst_pad_set_get_function (videotestsrc->srcpad, gst_videotestsrc_get);
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gst_pad_set_link_function (videotestsrc->srcpad, gst_videotestsrc_srcconnect);
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videotestsrc->width = 640;
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videotestsrc->height = 480;
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videotestsrc->rate = 30;
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videotestsrc->timestamp = 0;
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videotestsrc->interval = GST_SECOND / videotestsrc->rate;
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videotestsrc->pool = NULL;
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gst_videotestsrc_set_pattern(videotestsrc, GST_VIDEOTESTSRC_SMPTE);
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}
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static GstBuffer *
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gst_videotestsrc_get (GstPad * pad)
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{
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GstVideotestsrc *videotestsrc;
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gulong newsize;
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GstBuffer *buf;
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GstClockTimeDiff jitter = 0;
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GST_DEBUG (0, "gst_videotestsrc_get");
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g_return_val_if_fail (pad != NULL, NULL);
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g_return_val_if_fail (GST_IS_PAD (pad), NULL);
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videotestsrc = GST_VIDEOTESTSRC (gst_pad_get_parent (pad));
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newsize = (videotestsrc->width * videotestsrc->height * videotestsrc->bpp) >> 3;
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GST_DEBUG (0, "size=%ld %dx%d", newsize, videotestsrc->width, videotestsrc->height);
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buf = NULL;
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if (videotestsrc->pool) {
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buf = gst_buffer_new_from_pool (videotestsrc->pool, 0, 0);
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}
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if (!buf) {
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buf = gst_buffer_new ();
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GST_BUFFER_SIZE (buf) = newsize;
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GST_BUFFER_DATA (buf) = g_malloc (newsize);
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}
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g_return_val_if_fail (GST_BUFFER_DATA (buf) != NULL, NULL);
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videotestsrc->make_image (videotestsrc, (void *) GST_BUFFER_DATA (buf),
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videotestsrc->width, videotestsrc->height);
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do {
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GstClockID id;
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videotestsrc->timestamp += videotestsrc->interval;
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GST_BUFFER_TIMESTAMP (buf) = videotestsrc->timestamp;
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if (videotestsrc->clock) {
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id = gst_clock_new_single_shot_id (videotestsrc->clock, GST_BUFFER_TIMESTAMP (buf));
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gst_element_clock_wait (GST_ELEMENT (videotestsrc), id, &jitter);
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gst_clock_id_free (id);
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}
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}
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while (jitter > 100 * GST_MSECOND);
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return buf;
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}
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static void
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gst_videotestsrc_set_pattern (GstVideotestsrc *src, int pattern_type)
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{
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src->type = pattern_type;
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g_print("setting pattern to %d\n",pattern_type);
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switch(pattern_type){
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case GST_VIDEOTESTSRC_SMPTE:
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src->make_image = gst_videotestsrc_smpte;
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break;
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case GST_VIDEOTESTSRC_SNOW:
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src->make_image = gst_videotestsrc_snow;
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break;
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case GST_VIDEOTESTSRC_BLACK:
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src->make_image = gst_videotestsrc_black;
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break;
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default:
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g_assert_not_reached();
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}
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}
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static void
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gst_videotestsrc_set_property (GObject * object, guint prop_id, const GValue * value,
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GParamSpec * pspec)
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{
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GstVideotestsrc *src;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail (GST_IS_VIDEOTESTSRC (object));
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src = GST_VIDEOTESTSRC (object);
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GST_DEBUG (0, "gst_videotestsrc_set_property");
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switch (prop_id) {
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case ARG_WIDTH:
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src->width = g_value_get_int (value);
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break;
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case ARG_HEIGHT:
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src->height = g_value_get_int (value);
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break;
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case ARG_FOURCC:
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src->forced_format = g_strdup(g_value_get_string (value));
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printf ("forcing FOURCC to \"%s\"\n", src->forced_format);
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break;
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case ARG_RATE:
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src->rate = g_value_get_int (value);
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src->interval = GST_SECOND/src->rate;
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break;
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case ARG_TYPE:
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gst_videotestsrc_set_pattern (src, g_value_get_enum (value));
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break;
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default:
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break;
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}
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}
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static void
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gst_videotestsrc_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
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{
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GstVideotestsrc *src;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail (GST_IS_VIDEOTESTSRC (object));
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src = GST_VIDEOTESTSRC (object);
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switch (prop_id) {
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case ARG_WIDTH:
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g_value_set_int (value, src->width);
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break;
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case ARG_HEIGHT:
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g_value_set_int (value, src->height);
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break;
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case ARG_FOURCC:
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/* FIXME */
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/* g_value_set_int (value, src->forced_format); */
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break;
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case ARG_RATE:
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g_value_set_int (value, src->rate);
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break;
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case ARG_TYPE:
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g_value_set_enum (value, src->type);
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break;
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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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plugin_init (GModule * module, GstPlugin * plugin)
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{
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GstElementFactory *factory;
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/* create an elementfactory for the videotestsrc element */
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factory = gst_element_factory_new ("videotestsrc", GST_TYPE_VIDEOTESTSRC, &videotestsrc_details);
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g_return_val_if_fail (factory != NULL, FALSE);
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gst_element_factory_add_pad_template (factory,
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GST_PAD_TEMPLATE_GET (videotestsrc_src_template_factory));
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gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
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return TRUE;
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}
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GstPluginDesc plugin_desc = {
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GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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"videotestsrc",
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plugin_init
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};
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