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655 lines
19 KiB
C
655 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., 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-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 incomming 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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* <refsect2>
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* <title>Sample pipelines</title>
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* |[
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* gst-launch -v videotestsrc pattern=1 ! smpte name=s border=20000 type=234 duration=2000000000 ! ffmpegcolorspace ! 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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* </refsect2>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "gstsmpte.h"
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#include <gst/video/video.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_YUV ("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_YUV ("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_YUV ("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_FPS 0.
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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_FPS,
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PROP_DURATION,
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PROP_INVERT,
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PROP_LAST,
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};
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#define I420_Y_ROWSTRIDE(width) (GST_ROUND_UP_4(width))
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#define I420_U_ROWSTRIDE(width) (GST_ROUND_UP_8(width)/2)
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#define I420_V_ROWSTRIDE(width) ((GST_ROUND_UP_8(I420_Y_ROWSTRIDE(width)))/2)
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#define I420_Y_OFFSET(w,h) (0)
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#define I420_U_OFFSET(w,h) (I420_Y_OFFSET(w,h)+(I420_Y_ROWSTRIDE(w)*GST_ROUND_UP_2(h)))
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#define I420_V_OFFSET(w,h) (I420_U_OFFSET(w,h)+(I420_U_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2))
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#define I420_SIZE(w,h) (I420_V_OFFSET(w,h)+(I420_V_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2))
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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_class_init (GstSMPTEClass * klass);
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static void gst_smpte_base_init (GstSMPTEClass * klass);
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static void gst_smpte_init (GstSMPTE * smpte);
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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 GstElementClass *parent_class = NULL;
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/*static guint gst_smpte_signals[LAST_SIGNAL] = { 0 }; */
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static GType
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gst_smpte_get_type (void)
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{
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static GType smpte_type = 0;
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if (!smpte_type) {
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static const GTypeInfo smpte_info = {
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sizeof (GstSMPTEClass),
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(GBaseInitFunc) gst_smpte_base_init,
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NULL,
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(GClassInitFunc) gst_smpte_class_init,
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NULL,
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NULL,
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sizeof (GstSMPTE),
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0,
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(GInstanceInitFunc) gst_smpte_init,
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};
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smpte_type =
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g_type_register_static (GST_TYPE_ELEMENT, "GstSMPTE", &smpte_info, 0);
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}
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return smpte_type;
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}
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static void
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gst_smpte_base_init (GstSMPTEClass * klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_smpte_sink1_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_smpte_sink2_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_smpte_src_template));
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gst_element_class_set_details_simple (element_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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}
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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_FPS,
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g_param_spec_float ("fps", "FPS",
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"Frames per second if no input files are given (deprecated)", 0.,
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G_MAXFLOAT, DEFAULT_PROP_FPS,
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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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}
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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 (guint8 * data, gint width, gint height, gint color)
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{
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gint size = I420_Y_ROWSTRIDE (width) * 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 + I420_U_OFFSET (width, height);
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guint8 *vp = data + I420_V_OFFSET (width, height);
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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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GstStructure *structure;
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gboolean ret;
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smpte = GST_SMPTE (GST_PAD_PARENT (pad));
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structure = gst_caps_get_structure (caps, 0);
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ret = gst_structure_get_int (structure, "width", &smpte->width);
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ret &= gst_structure_get_int (structure, "height", &smpte->height);
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ret &= gst_structure_get_fraction (structure, "framerate",
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&smpte->fps_num, &smpte->fps_denom);
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if (!ret)
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return FALSE;
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/* for backward compat, we store these here */
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smpte->fps = ((gdouble) smpte->fps_num) / smpte->fps_denom;
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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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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_setcaps_function (smpte->sinkpad1,
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GST_DEBUG_FUNCPTR (gst_smpte_setcaps));
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gst_pad_set_getcaps_function (smpte->sinkpad1,
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GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
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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_setcaps_function (smpte->sinkpad2,
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GST_DEBUG_FUNCPTR (gst_smpte_setcaps));
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gst_pad_set_getcaps_function (smpte->sinkpad2,
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GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
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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_start (smpte->collect);
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gst_collect_pads_add_pad (smpte->collect, smpte->sinkpad1,
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sizeof (GstCollectData));
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gst_collect_pads_add_pad (smpte->collect, smpte->sinkpad2,
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sizeof (GstCollectData));
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smpte->fps = DEFAULT_PROP_FPS;
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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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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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}
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static void
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gst_smpte_blend_i420 (guint8 * in1, guint8 * in2, guint8 * out, GstMask * mask,
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gint width, gint height, 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 *in1u, *in1v, *in2u, *in2v, *outu, *outv;
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gint lumsize = width * height;
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gint chromsize = lumsize >> 2;
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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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in1u = in1 + lumsize;
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in1v = in1u + chromsize;
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in2u = in2 + lumsize;
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in2v = in2u + chromsize;
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outu = out + lumsize;
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outv = outu + chromsize;
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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++ = ((*in1++ * value) + (*in2++ * (256 - value))) >> 8;
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if (!(i & 1) && !(j & 1)) {
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*outu++ = ((*in1u++ * value) + (*in2u++ * (256 - value))) >> 8;
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*outv++ = ((*in1v++ * value) + (*in2v++ * (256 - value))) >> 8;
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}
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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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if (G_UNLIKELY (smpte->fps_num == 0))
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goto not_negotiated;
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|
if (!GST_PAD_CAPS (smpte->sinkpad1) || !GST_PAD_CAPS (smpte->sinkpad2))
|
|
goto not_negotiated;
|
|
|
|
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 (I420_SIZE (smpte->width, smpte->height));
|
|
fill_i420 (GST_BUFFER_DATA (in1), smpte->width, smpte->height, 7);
|
|
}
|
|
if (in2 == NULL) {
|
|
/* if no input, make picture white */
|
|
in2 = gst_buffer_new_and_alloc (I420_SIZE (smpte->width, smpte->height));
|
|
fill_i420 (GST_BUFFER_DATA (in2), smpte->width, smpte->height, 0);
|
|
}
|
|
|
|
if (GST_BUFFER_SIZE (in1) != GST_BUFFER_SIZE (in2))
|
|
goto input_formats_do_not_match;
|
|
|
|
if (smpte->position < smpte->end_position) {
|
|
outbuf = gst_buffer_new_and_alloc (I420_SIZE (smpte->width, smpte->height));
|
|
|
|
/* set caps if not done yet */
|
|
if (!GST_PAD_CAPS (smpte->srcpad)) {
|
|
GstCaps *caps;
|
|
|
|
caps =
|
|
gst_caps_copy (gst_static_caps_get
|
|
(&gst_smpte_src_template.static_caps));
|
|
gst_caps_set_simple (caps, "width", G_TYPE_INT, smpte->width, "height",
|
|
G_TYPE_INT, smpte->height, "framerate", GST_TYPE_FRACTION,
|
|
smpte->fps_num, smpte->fps_denom, NULL);
|
|
|
|
gst_pad_set_caps (smpte->srcpad, caps);
|
|
|
|
gst_pad_push_event (smpte->srcpad,
|
|
gst_event_new_new_segment_full (FALSE,
|
|
1.0, 1.0, GST_FORMAT_TIME, 0, -1, 0));
|
|
|
|
}
|
|
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (smpte->srcpad));
|
|
|
|
gst_smpte_blend_i420 (GST_BUFFER_DATA (in1),
|
|
GST_BUFFER_DATA (in2),
|
|
GST_BUFFER_DATA (outbuf),
|
|
smpte->mask, smpte->width, smpte->height,
|
|
smpte->border,
|
|
((1 << smpte->depth) + smpte->border) *
|
|
smpte->position / smpte->end_position);
|
|
|
|
} 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:
|
|
{
|
|
GST_ELEMENT_ERROR (smpte, CORE, NEGOTIATION, (NULL),
|
|
("input formats don't match: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT,
|
|
GST_PAD_CAPS (smpte->sinkpad1), GST_PAD_CAPS (smpte->sinkpad2)));
|
|
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_FPS:
|
|
smpte->fps = g_value_get_float (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_FPS:
|
|
g_value_set_float (value, smpte->fps);
|
|
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 = parent_class->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_smpte_reset (smpte);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
gboolean
|
|
gst_smpte_plugin_init (GstPlugin * plugin)
|
|
{
|
|
GST_DEBUG_CATEGORY_INIT (gst_smpte_debug, "smpte", 0,
|
|
"SMPTE transition effect");
|
|
|
|
return gst_element_register (plugin, "smpte", GST_RANK_NONE, GST_TYPE_SMPTE);
|
|
}
|