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667 lines
19 KiB
C
667 lines
19 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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:element-smpte
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* @title: smpte
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*
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* smpte can accept I420 video streams with the same width, height and
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* framerate. The two incoming buffers are blended together using an effect
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* specific alpha mask.
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*
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* The #GstSMPTE:depth property defines the presision in bits of the mask. A
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* higher presision will create a mask with smoother gradients in order to avoid
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* banding.
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*
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* ## Sample pipelines
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* |[
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* gst-launch-1.0 -v videotestsrc pattern=1 ! smpte name=s border=20000 type=234 duration=2000000000 ! videoconvert ! ximagesink videotestsrc ! s.
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* ]| A pipeline to demonstrate the smpte transition.
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* It shows a pinwheel transition a from a snow videotestsrc to an smpte
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* pattern videotestsrc. The transition will take 2 seconds to complete. The
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* edges of the transition are smoothed with a 20000 big border.
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*
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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 <string.h>
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#include "gstsmpte.h"
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#include "paint.h"
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GST_DEBUG_CATEGORY_STATIC (gst_smpte_debug);
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#define GST_CAT_DEFAULT gst_smpte_debug
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static GstStaticPadTemplate gst_smpte_src_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 (GST_VIDEO_CAPS_MAKE ("I420")
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)
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);
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static GstStaticPadTemplate gst_smpte_sink1_template =
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GST_STATIC_PAD_TEMPLATE ("sink1",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("I420")
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)
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);
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static GstStaticPadTemplate gst_smpte_sink2_template =
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GST_STATIC_PAD_TEMPLATE ("sink2",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("I420")
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)
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);
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/* SMPTE 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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#define DEFAULT_PROP_TYPE 1
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#define DEFAULT_PROP_BORDER 0
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#define DEFAULT_PROP_DEPTH 16
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#define DEFAULT_PROP_DURATION GST_SECOND
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#define DEFAULT_PROP_INVERT FALSE
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enum
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{
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PROP_0,
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PROP_TYPE,
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PROP_BORDER,
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PROP_DEPTH,
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PROP_DURATION,
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PROP_INVERT
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};
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#define GST_TYPE_SMPTE_TRANSITION_TYPE (gst_smpte_transition_type_get_type())
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static GType
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gst_smpte_transition_type_get_type (void)
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{
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static GType smpte_transition_type = 0;
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GEnumValue *smpte_transitions;
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if (!smpte_transition_type) {
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const GList *definitions;
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gint i = 0;
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definitions = gst_mask_get_definitions ();
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smpte_transitions =
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g_new0 (GEnumValue, g_list_length ((GList *) definitions) + 1);
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while (definitions) {
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GstMaskDefinition *definition = (GstMaskDefinition *) definitions->data;
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definitions = g_list_next (definitions);
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smpte_transitions[i].value = definition->type;
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/* older GLib versions have the two fields as non-const, hence the cast */
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smpte_transitions[i].value_nick = (gchar *) definition->short_name;
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smpte_transitions[i].value_name = (gchar *) definition->long_name;
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i++;
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}
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smpte_transition_type =
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g_enum_register_static ("GstSMPTETransitionType", smpte_transitions);
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}
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return smpte_transition_type;
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}
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static void gst_smpte_finalize (GstSMPTE * smpte);
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static GstFlowReturn gst_smpte_collected (GstCollectPads * pads,
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GstSMPTE * smpte);
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static void gst_smpte_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_smpte_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstStateChangeReturn gst_smpte_change_state (GstElement * element,
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GstStateChange transition);
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/*static guint gst_smpte_signals[LAST_SIGNAL] = { 0 }; */
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#define gst_smpte_parent_class parent_class
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G_DEFINE_TYPE (GstSMPTE, gst_smpte, GST_TYPE_ELEMENT);
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GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (smpte, "smpte", GST_RANK_NONE,
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GST_TYPE_SMPTE, GST_DEBUG_CATEGORY_INIT (gst_smpte_debug, "smpte", 0,
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"SMPTE transition effect"));
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static void
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gst_smpte_class_init (GstSMPTEClass * 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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parent_class = g_type_class_peek_parent (klass);
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gobject_class->set_property = gst_smpte_set_property;
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gobject_class->get_property = gst_smpte_get_property;
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gobject_class->finalize = (GObjectFinalizeFunc) gst_smpte_finalize;
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_gst_mask_init ();
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_TYPE,
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g_param_spec_enum ("type", "Type", "The type of transition to use",
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GST_TYPE_SMPTE_TRANSITION_TYPE, DEFAULT_PROP_TYPE,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BORDER,
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g_param_spec_int ("border", "Border",
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"The border width of the transition", 0, G_MAXINT,
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DEFAULT_PROP_BORDER, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DEPTH,
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g_param_spec_int ("depth", "Depth", "Depth of the mask in bits", 1, 24,
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DEFAULT_PROP_DEPTH, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DURATION,
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g_param_spec_uint64 ("duration", "Duration",
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"Duration of the transition effect in nanoseconds", 0, G_MAXUINT64,
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DEFAULT_PROP_DURATION, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_INVERT,
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g_param_spec_boolean ("invert", "Invert",
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"Invert transition mask", DEFAULT_PROP_INVERT,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_smpte_change_state);
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gst_element_class_add_static_pad_template (gstelement_class,
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&gst_smpte_sink1_template);
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gst_element_class_add_static_pad_template (gstelement_class,
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&gst_smpte_sink2_template);
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gst_element_class_add_static_pad_template (gstelement_class,
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&gst_smpte_src_template);
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gst_element_class_set_static_metadata (gstelement_class, "SMPTE transitions",
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"Filter/Editor/Video",
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"Apply the standard SMPTE transitions on video images",
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"Wim Taymans <wim.taymans@chello.be>");
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gst_type_mark_as_plugin_api (GST_TYPE_SMPTE_TRANSITION_TYPE, 0);
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}
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/* wht yel cya grn mag red blu blk -I Q */
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static const int y_colors[] = { 255, 226, 179, 150, 105, 76, 29, 16, 16, 0 };
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static const int u_colors[] = { 128, 0, 170, 46, 212, 85, 255, 128, 0, 128 };
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static const int v_colors[] = { 128, 155, 0, 21, 235, 255, 107, 128, 128, 255 };
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static void
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fill_i420 (GstVideoInfo * vinfo, guint8 * data, gint height, gint color)
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{
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gint size = GST_VIDEO_INFO_COMP_STRIDE (vinfo, 0) * GST_ROUND_UP_2 (height);
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gint size4 = size >> 2;
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guint8 *yp = data;
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guint8 *up = data + GST_VIDEO_INFO_COMP_OFFSET (vinfo, 1);
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guint8 *vp = data + GST_VIDEO_INFO_COMP_OFFSET (vinfo, 2);
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memset (yp, y_colors[color], size);
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memset (up, u_colors[color], size4);
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memset (vp, v_colors[color], size4);
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}
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static gboolean
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gst_smpte_update_mask (GstSMPTE * smpte, gint type, gboolean invert,
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gint depth, gint width, gint height)
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{
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GstMask *newmask;
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if (smpte->mask) {
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if (smpte->type == type &&
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smpte->invert == invert &&
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smpte->depth == depth &&
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smpte->width == width && smpte->height == height)
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return TRUE;
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}
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newmask = gst_mask_factory_new (type, invert, depth, width, height);
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if (newmask) {
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if (smpte->mask) {
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gst_mask_destroy (smpte->mask);
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}
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smpte->mask = newmask;
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smpte->type = type;
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smpte->invert = invert;
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smpte->depth = depth;
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smpte->width = width;
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smpte->height = height;
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return TRUE;
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}
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return FALSE;
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}
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static gboolean
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gst_smpte_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstSMPTE *smpte;
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gboolean ret;
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GstVideoInfo vinfo;
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smpte = GST_SMPTE (GST_PAD_PARENT (pad));
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gst_video_info_init (&vinfo);
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if (!gst_video_info_from_caps (&vinfo, caps))
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return FALSE;
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smpte->width = GST_VIDEO_INFO_WIDTH (&vinfo);
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smpte->height = GST_VIDEO_INFO_HEIGHT (&vinfo);
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smpte->fps_num = GST_VIDEO_INFO_FPS_N (&vinfo);
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smpte->fps_denom = GST_VIDEO_INFO_FPS_D (&vinfo);
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/* figure out the duration in frames */
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smpte->end_position = gst_util_uint64_scale (smpte->duration,
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smpte->fps_num, GST_SECOND * smpte->fps_denom);
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GST_DEBUG_OBJECT (smpte, "duration: %d frames", smpte->end_position);
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ret =
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gst_smpte_update_mask (smpte, smpte->type, smpte->invert, smpte->depth,
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smpte->width, smpte->height);
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if (pad == smpte->sinkpad1) {
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GST_DEBUG_OBJECT (smpte, "setting pad1 info");
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smpte->vinfo1 = vinfo;
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} else {
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GST_DEBUG_OBJECT (smpte, "setting pad2 info");
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smpte->vinfo2 = vinfo;
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}
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return ret;
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}
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static gboolean
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gst_smpte_sink_event (GstCollectPads * pads,
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GstCollectData * data, GstEvent * event, gpointer user_data)
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{
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GstPad *pad;
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gboolean ret = FALSE;
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pad = data->pad;
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_CAPS:
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{
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GstCaps *caps;
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gst_event_parse_caps (event, &caps);
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ret = gst_smpte_setcaps (pad, caps);
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gst_event_unref (event);
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event = NULL;
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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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if (event != NULL)
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return gst_collect_pads_event_default (pads, data, event, FALSE);
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return ret;
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}
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static void
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gst_smpte_init (GstSMPTE * smpte)
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{
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smpte->sinkpad1 =
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gst_pad_new_from_static_template (&gst_smpte_sink1_template, "sink1");
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GST_PAD_SET_PROXY_CAPS (smpte->sinkpad1);
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gst_element_add_pad (GST_ELEMENT (smpte), smpte->sinkpad1);
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smpte->sinkpad2 =
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gst_pad_new_from_static_template (&gst_smpte_sink2_template, "sink2");
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GST_PAD_SET_PROXY_CAPS (smpte->sinkpad2);
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gst_element_add_pad (GST_ELEMENT (smpte), smpte->sinkpad2);
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smpte->srcpad =
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gst_pad_new_from_static_template (&gst_smpte_src_template, "src");
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gst_element_add_pad (GST_ELEMENT (smpte), smpte->srcpad);
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smpte->collect = gst_collect_pads_new ();
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gst_collect_pads_set_function (smpte->collect,
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(GstCollectPadsFunction) GST_DEBUG_FUNCPTR (gst_smpte_collected), smpte);
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gst_collect_pads_set_event_function (smpte->collect,
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GST_DEBUG_FUNCPTR (gst_smpte_sink_event), smpte);
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gst_collect_pads_add_pad (smpte->collect, smpte->sinkpad1,
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sizeof (GstCollectData), NULL, TRUE);
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gst_collect_pads_add_pad (smpte->collect, smpte->sinkpad2,
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sizeof (GstCollectData), NULL, TRUE);
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smpte->type = DEFAULT_PROP_TYPE;
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smpte->border = DEFAULT_PROP_BORDER;
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smpte->depth = DEFAULT_PROP_DEPTH;
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smpte->duration = DEFAULT_PROP_DURATION;
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smpte->invert = DEFAULT_PROP_INVERT;
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smpte->fps_num = 0;
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smpte->fps_denom = 1;
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}
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static void
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gst_smpte_finalize (GstSMPTE * smpte)
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{
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if (smpte->collect) {
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gst_object_unref (smpte->collect);
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}
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if (smpte->mask) {
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gst_mask_destroy (smpte->mask);
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}
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G_OBJECT_CLASS (parent_class)->finalize ((GObject *) smpte);
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}
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static void
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gst_smpte_reset (GstSMPTE * smpte)
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{
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smpte->width = -1;
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smpte->height = -1;
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smpte->position = 0;
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smpte->end_position = 0;
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smpte->send_stream_start = TRUE;
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}
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static void
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gst_smpte_blend_i420 (GstVideoFrame * frame1, GstVideoFrame * frame2,
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GstVideoFrame * oframe, GstMask * mask, gint border, gint pos)
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{
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guint32 *maskp;
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gint value;
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gint i, j;
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gint min, max;
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guint8 *in1, *in2, *out, *in1u, *in1v, *in2u, *in2v, *outu, *outv;
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gint width, height;
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if (border == 0)
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border++;
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min = pos - border;
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max = pos;
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width = GST_VIDEO_FRAME_WIDTH (frame1);
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height = GST_VIDEO_FRAME_HEIGHT (frame1);
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in1 = GST_VIDEO_FRAME_COMP_DATA (frame1, 0);
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in2 = GST_VIDEO_FRAME_COMP_DATA (frame2, 0);
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out = GST_VIDEO_FRAME_COMP_DATA (oframe, 0);
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in1u = GST_VIDEO_FRAME_COMP_DATA (frame1, 1);
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in1v = GST_VIDEO_FRAME_COMP_DATA (frame1, 2);
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in2u = GST_VIDEO_FRAME_COMP_DATA (frame2, 1);
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in2v = GST_VIDEO_FRAME_COMP_DATA (frame2, 2);
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outu = GST_VIDEO_FRAME_COMP_DATA (oframe, 1);
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outv = GST_VIDEO_FRAME_COMP_DATA (oframe, 2);
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maskp = mask->data;
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for (i = 0; i < height; i++) {
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for (j = 0; j < width; j++) {
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value = *maskp++;
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value = ((CLAMP (value, min, max) - min) << 8) / border;
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out[j] = ((in1[j] * value) + (in2[j] * (256 - value))) >> 8;
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if (!(i & 1) && !(j & 1)) {
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outu[j / 2] =
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((in1u[j / 2] * value) + (in2u[j / 2] * (256 - value))) >> 8;
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outv[j / 2] =
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((in1v[j / 2] * value) + (in2v[j / 2] * (256 - value))) >> 8;
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}
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}
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in1 += GST_VIDEO_FRAME_COMP_STRIDE (frame1, 0);
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in2 += GST_VIDEO_FRAME_COMP_STRIDE (frame2, 0);
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out += GST_VIDEO_FRAME_COMP_STRIDE (oframe, 0);
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if (!(i & 1)) {
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in1u += GST_VIDEO_FRAME_COMP_STRIDE (frame1, 1);
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in2u += GST_VIDEO_FRAME_COMP_STRIDE (frame2, 1);
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in1v += GST_VIDEO_FRAME_COMP_STRIDE (frame1, 2);
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in2v += GST_VIDEO_FRAME_COMP_STRIDE (frame1, 2);
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outu += GST_VIDEO_FRAME_COMP_STRIDE (oframe, 1);
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outv += GST_VIDEO_FRAME_COMP_STRIDE (oframe, 2);
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}
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}
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}
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static GstFlowReturn
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gst_smpte_collected (GstCollectPads * pads, GstSMPTE * smpte)
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{
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GstBuffer *outbuf;
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GstClockTime ts;
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GstBuffer *in1 = NULL, *in2 = NULL;
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GSList *collected;
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GstMapInfo map;
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GstVideoFrame frame1, frame2, oframe;
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if (G_UNLIKELY (smpte->fps_num == 0))
|
|
goto not_negotiated;
|
|
|
|
if (!gst_pad_has_current_caps (smpte->sinkpad1) ||
|
|
!gst_pad_has_current_caps (smpte->sinkpad2))
|
|
goto not_negotiated;
|
|
|
|
if (!gst_video_info_is_equal (&smpte->vinfo1, &smpte->vinfo2))
|
|
goto input_formats_do_not_match;
|
|
|
|
if (smpte->send_stream_start) {
|
|
gchar s_id[32];
|
|
|
|
/* stream-start (FIXME: create id based on input ids) */
|
|
g_snprintf (s_id, sizeof (s_id), "smpte-%08x", g_random_int ());
|
|
gst_pad_push_event (smpte->srcpad, gst_event_new_stream_start (s_id));
|
|
smpte->send_stream_start = FALSE;
|
|
}
|
|
|
|
ts = gst_util_uint64_scale_int (smpte->position * GST_SECOND,
|
|
smpte->fps_denom, smpte->fps_num);
|
|
|
|
for (collected = pads->data; collected; collected = g_slist_next (collected)) {
|
|
GstCollectData *data;
|
|
|
|
data = (GstCollectData *) collected->data;
|
|
|
|
if (data->pad == smpte->sinkpad1)
|
|
in1 = gst_collect_pads_pop (pads, data);
|
|
else if (data->pad == smpte->sinkpad2)
|
|
in2 = gst_collect_pads_pop (pads, data);
|
|
}
|
|
|
|
if (in1 == NULL) {
|
|
/* if no input, make picture black */
|
|
in1 = gst_buffer_new_and_alloc (GST_VIDEO_INFO_SIZE (&smpte->vinfo1));
|
|
gst_buffer_map (in1, &map, GST_MAP_WRITE);
|
|
fill_i420 (&smpte->vinfo1, map.data, smpte->height, 7);
|
|
gst_buffer_unmap (in1, &map);
|
|
}
|
|
if (in2 == NULL) {
|
|
/* if no input, make picture white */
|
|
in2 = gst_buffer_new_and_alloc (GST_VIDEO_INFO_SIZE (&smpte->vinfo2));
|
|
gst_buffer_map (in2, &map, GST_MAP_WRITE);
|
|
fill_i420 (&smpte->vinfo2, map.data, smpte->height, 0);
|
|
gst_buffer_unmap (in2, &map);
|
|
}
|
|
|
|
if (smpte->position < smpte->end_position) {
|
|
outbuf = gst_buffer_new_and_alloc (GST_VIDEO_INFO_SIZE (&smpte->vinfo1));
|
|
|
|
/* set caps if not done yet */
|
|
if (!gst_pad_has_current_caps (smpte->srcpad)) {
|
|
GstCaps *caps;
|
|
GstSegment segment;
|
|
|
|
caps = gst_video_info_to_caps (&smpte->vinfo1);
|
|
|
|
gst_pad_set_caps (smpte->srcpad, caps);
|
|
gst_caps_unref (caps);
|
|
|
|
gst_segment_init (&segment, GST_FORMAT_TIME);
|
|
gst_pad_push_event (smpte->srcpad, gst_event_new_segment (&segment));
|
|
}
|
|
|
|
gst_video_frame_map (&frame1, &smpte->vinfo1, in1, GST_MAP_READ);
|
|
gst_video_frame_map (&frame2, &smpte->vinfo2, in2, GST_MAP_READ);
|
|
/* re-use either info, now know they are essentially identical */
|
|
gst_video_frame_map (&oframe, &smpte->vinfo1, outbuf, GST_MAP_WRITE);
|
|
gst_smpte_blend_i420 (&frame1, &frame2, &oframe, smpte->mask, smpte->border,
|
|
((1 << smpte->depth) + smpte->border) *
|
|
smpte->position / smpte->end_position);
|
|
gst_video_frame_unmap (&frame1);
|
|
gst_video_frame_unmap (&frame2);
|
|
gst_video_frame_unmap (&oframe);
|
|
} else {
|
|
outbuf = in2;
|
|
gst_buffer_ref (in2);
|
|
}
|
|
|
|
smpte->position++;
|
|
|
|
if (in1)
|
|
gst_buffer_unref (in1);
|
|
if (in2)
|
|
gst_buffer_unref (in2);
|
|
|
|
GST_BUFFER_TIMESTAMP (outbuf) = ts;
|
|
|
|
return gst_pad_push (smpte->srcpad, outbuf);
|
|
|
|
/* ERRORS */
|
|
not_negotiated:
|
|
{
|
|
GST_ELEMENT_ERROR (smpte, CORE, NEGOTIATION, (NULL),
|
|
("No input format negotiated"));
|
|
return GST_FLOW_NOT_NEGOTIATED;
|
|
}
|
|
input_formats_do_not_match:
|
|
{
|
|
GstCaps *caps1, *caps2;
|
|
|
|
caps1 = gst_pad_get_current_caps (smpte->sinkpad1);
|
|
caps2 = gst_pad_get_current_caps (smpte->sinkpad2);
|
|
GST_ELEMENT_ERROR (smpte, CORE, NEGOTIATION, (NULL),
|
|
("input formats don't match: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT,
|
|
caps1, caps2));
|
|
if (caps1)
|
|
gst_caps_unref (caps1);
|
|
if (caps2)
|
|
gst_caps_unref (caps2);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_smpte_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstSMPTE *smpte;
|
|
|
|
smpte = GST_SMPTE (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_TYPE:
|
|
smpte->type = g_value_get_enum (value);
|
|
break;
|
|
case PROP_BORDER:
|
|
smpte->border = g_value_get_int (value);
|
|
break;
|
|
case PROP_DEPTH:
|
|
smpte->depth = g_value_get_int (value);
|
|
break;
|
|
case PROP_DURATION:
|
|
smpte->duration = g_value_get_uint64 (value);
|
|
break;
|
|
case PROP_INVERT:
|
|
smpte->invert = g_value_get_boolean (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_smpte_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstSMPTE *smpte;
|
|
|
|
smpte = GST_SMPTE (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_TYPE:
|
|
g_value_set_enum (value, smpte->type);
|
|
break;
|
|
case PROP_BORDER:
|
|
g_value_set_int (value, smpte->border);
|
|
break;
|
|
case PROP_DEPTH:
|
|
g_value_set_int (value, smpte->depth);
|
|
break;
|
|
case PROP_DURATION:
|
|
g_value_set_uint64 (value, smpte->duration);
|
|
break;
|
|
case PROP_INVERT:
|
|
g_value_set_boolean (value, smpte->invert);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_smpte_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstStateChangeReturn ret;
|
|
GstSMPTE *smpte;
|
|
|
|
smpte = GST_SMPTE (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
gst_smpte_reset (smpte);
|
|
GST_LOG_OBJECT (smpte, "starting collectpads");
|
|
gst_collect_pads_start (smpte->collect);
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
GST_LOG_OBJECT (smpte, "stopping collectpads");
|
|
gst_collect_pads_stop (smpte->collect);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_smpte_reset (smpte);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|