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-rw-r--r--gst/deinterlace/.gitignore7
-rw-r--r--gst/deinterlace/Makefile.am9
-rw-r--r--gst/deinterlace/gstdeinterlace.c390
-rw-r--r--gst/deinterlace/gstdeinterlace.h76
4 files changed, 482 insertions, 0 deletions
diff --git a/gst/deinterlace/.gitignore b/gst/deinterlace/.gitignore
new file mode 100644
index 00000000..08f5ed37
--- /dev/null
+++ b/gst/deinterlace/.gitignore
@@ -0,0 +1,7 @@
+Makefile
+Makefile.in
+*.o
+*.lo
+*.la
+.deps
+.libs
diff --git a/gst/deinterlace/Makefile.am b/gst/deinterlace/Makefile.am
new file mode 100644
index 00000000..eafa47d5
--- /dev/null
+++ b/gst/deinterlace/Makefile.am
@@ -0,0 +1,9 @@
+filterdir = $(libdir)/gst
+
+filter_LTLIBRARIES = libgstdeinterlace.la
+
+libgstdeinterlace_la_SOURCES = gstdeinterlace.c
+libgstdeinterlace_la_CFLAGS = $(GST_CFLAGS)
+
+noinst_HEADERS = gstdeinterlace.h
+
diff --git a/gst/deinterlace/gstdeinterlace.c b/gst/deinterlace/gstdeinterlace.c
new file mode 100644
index 00000000..99a70c84
--- /dev/null
+++ b/gst/deinterlace/gstdeinterlace.c
@@ -0,0 +1,390 @@
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+/* based on the Area Based Deinterlacer (for RGB frames) */
+/* (a VirtualDub filter) from Gunnar Thalin <guth@home.se> */
+
+#include <string.h>
+#include <gst/gst.h>
+#include "gstdeinterlace.h"
+
+static GstElementDetails deinterlace_details = {
+ "DeInterlace",
+ "Filter/Effect",
+ "Deinterlace video",
+ VERSION,
+ "Wim Taymans <wim.taymans@chello.be>",
+ "(C) 2001",
+};
+
+
+/* Filter signals and args */
+enum {
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum {
+ ARG_0,
+ ARG_DI_ONLY,
+ ARG_BLEND,
+ ARG_THRESHOLD,
+ ARG_EDGE_DETECT,
+};
+
+GST_PADTEMPLATE_FACTORY (deinterlace_src_factory,
+ "src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_CAPS_NEW (
+ "deinterlace_src",
+ "video/raw",
+ "format", GST_PROPS_FOURCC (GST_STR_FOURCC ("I420"))
+ )
+)
+
+GST_PADTEMPLATE_FACTORY (deinterlace_sink_factory,
+ "sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_CAPS_NEW (
+ "deinterlace_src",
+ "video/raw",
+ "format", GST_PROPS_FOURCC (GST_STR_FOURCC ("I420"))
+ )
+)
+
+static GType gst_deinterlace_get_type (void);
+
+static void gst_deinterlace_class_init (GstDeInterlaceClass *klass);
+static void gst_deinterlace_init (GstDeInterlace *filter);
+
+static void gst_deinterlace_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
+static void gst_deinterlace_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
+
+static void gst_deinterlace_chain (GstPad *pad, GstBuffer *buf);
+
+static GstElementClass *parent_class = NULL;
+//static guint gst_filter_signals[LAST_SIGNAL] = { 0 };
+
+static GstPadNegotiateReturn
+deinterlace_negotiate_src (GstPad *pad, GstCaps **caps, gpointer *data)
+{
+ GstDeInterlace* filter = GST_DEINTERLACE (gst_pad_get_parent (pad));
+
+ if (*caps==NULL)
+ return GST_PAD_NEGOTIATE_FAIL;
+
+ return gst_pad_negotiate_proxy(pad,filter->sinkpad,caps);
+}
+
+static GstPadNegotiateReturn
+deinterlace_negotiate_sink (GstPad *pad, GstCaps **caps, gpointer *data)
+{
+ GstDeInterlace* filter = GST_DEINTERLACE (gst_pad_get_parent (pad));
+
+ if (*caps==NULL)
+ return GST_PAD_NEGOTIATE_FAIL;
+
+ return gst_pad_negotiate_proxy(pad,filter->srcpad,caps);
+}
+
+static GType
+gst_deinterlace_get_type(void) {
+ static GType deinterlace_type = 0;
+
+ if (!deinterlace_type) {
+ static const GTypeInfo deinterlace_info = {
+ sizeof(GstDeInterlaceClass), NULL,
+ NULL,
+ (GClassInitFunc)gst_deinterlace_class_init,
+ NULL,
+ NULL,
+ sizeof(GstDeInterlace),
+ 0,
+ (GInstanceInitFunc)gst_deinterlace_init,
+ };
+ deinterlace_type = g_type_register_static(GST_TYPE_ELEMENT, "GstDeInterlace", &deinterlace_info, 0);
+ }
+ return deinterlace_type;
+}
+
+static void
+gst_deinterlace_class_init (GstDeInterlaceClass *klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass*)klass;
+ gstelement_class = (GstElementClass*)klass;
+
+ parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
+
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DI_ONLY,
+ g_param_spec_boolean("di_area_only","di_area_only","di_area_only",
+ TRUE,G_PARAM_READWRITE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BLEND,
+ g_param_spec_boolean("blend","blend","blend",
+ TRUE,G_PARAM_READWRITE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_THRESHOLD,
+ g_param_spec_int("threshold","threshold","threshold",
+ G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_EDGE_DETECT,
+ g_param_spec_int("edge_detect","edge_detect","edge_detect",
+ G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
+
+ gobject_class->set_property = gst_deinterlace_set_property;
+ gobject_class->get_property = gst_deinterlace_get_property;
+}
+
+static void
+gst_deinterlace_newcaps (GstPad *pad, GstCaps *caps)
+{
+ GstDeInterlace *filter;
+
+ filter = GST_DEINTERLACE(gst_pad_get_parent (pad));
+
+ filter->width = gst_caps_get_int (caps, "width");
+ filter->height = gst_caps_get_int (caps, "height");
+
+ if (filter->picsize != (filter->width*filter->height)) {
+ if (filter->src)
+ g_free(filter->src);
+ filter->picsize = filter->width*filter->height;
+ filter->src = g_malloc(filter->picsize);
+ }
+}
+
+static void
+gst_deinterlace_init (GstDeInterlace *filter)
+{
+ filter->sinkpad = gst_pad_new_from_template(deinterlace_sink_factory (),"sink");
+ gst_pad_set_negotiate_function(filter->sinkpad,deinterlace_negotiate_sink);
+ gst_pad_set_chain_function(filter->sinkpad,gst_deinterlace_chain);
+ gst_pad_set_newcaps_function(filter->sinkpad,gst_deinterlace_newcaps);
+ gst_element_add_pad(GST_ELEMENT(filter),filter->sinkpad);
+
+ filter->srcpad = gst_pad_new_from_template(deinterlace_src_factory (),"src");
+ gst_pad_set_negotiate_function(filter->srcpad,deinterlace_negotiate_src);
+ gst_element_add_pad(GST_ELEMENT(filter),filter->srcpad);
+
+ filter->show_deinterlaced_area_only = FALSE;
+ filter->blend = FALSE;
+ //filter->threshold_blend = 0;
+ filter->threshold = 50;
+ filter->edge_detect = 25;
+
+ filter->src = NULL;
+ filter->picsize = 0;
+}
+
+static void
+gst_deinterlace_chain (GstPad *pad, GstBuffer *buf)
+{
+ GstDeInterlace *filter;
+ gint y0, y1, y2, y3;
+ guchar *psrc1, *psrc2, *psrc3, *pdst1, *yuvptr, *src;
+ gint iInterlaceValue0, iInterlaceValue1, iInterlaceValue2;
+ gint x, y;
+ gint y_line;
+ guchar *y_dst, *y_src;
+ gboolean bBlend;
+ gint iThreshold;
+ gint iEdgeDetect;
+ gint width, height;
+ gboolean bShowDeinterlacedAreaOnly;
+
+ g_return_if_fail (pad != NULL);
+ g_return_if_fail (GST_IS_PAD (pad));
+ g_return_if_fail (buf != NULL);
+
+ filter = GST_DEINTERLACE (gst_pad_get_parent (pad));
+
+ bBlend = filter->blend;
+ iThreshold = filter->threshold;
+ iEdgeDetect = filter->edge_detect;
+ width = filter->width;
+ height = filter->height;
+ src = filter->src;
+ yuvptr = GST_BUFFER_DATA (buf);
+ bShowDeinterlacedAreaOnly = filter->show_deinterlaced_area_only;
+
+ memcpy(filter->src, yuvptr, filter->picsize);
+
+ y_dst = yuvptr; // dst y pointer
+ // we should not change u,v because one u, v value stands for
+ // 2 pixels per 2 lines = 4 pixel and we don't want to change
+ // the color of
+
+ y_line = width;
+ y_src = src;
+
+ iThreshold = iThreshold * iThreshold * 4;
+ // We don't want an integer overflow in the interlace calculation.
+ if (iEdgeDetect > 180)
+ iEdgeDetect = 180;
+ iEdgeDetect = iEdgeDetect * iEdgeDetect;
+
+ y1 = 0; // Avoid compiler warning. The value is not used.
+ for (x = 0; x < width; x++) {
+ psrc3 = y_src + x;
+ y3 = *psrc3;
+ psrc2 = psrc3 + y_line;
+ y2 = *psrc2;
+ pdst1 = y_dst + x;
+ iInterlaceValue1 = iInterlaceValue2 = 0;
+ for (y = 0; y <= height; y++) {
+ psrc1 = psrc2;
+ psrc2 = psrc3;
+ psrc3 = psrc3 + y_line;
+ y0 = y1;
+ y1 = y2;
+ y2 = y3;
+ if (y < height - 1) {
+ y3 = *psrc3;
+ } else {
+ y3 = y1;
+ }
+
+ iInterlaceValue0 = iInterlaceValue1;
+ iInterlaceValue1 = iInterlaceValue2;
+
+ if (y < height)
+ iInterlaceValue2 = ((y1 - y2) * (y3 - y2) -
+ ((iEdgeDetect * (y1 - y3) * (y1 - y3)) >> 12))*10;
+ else
+ iInterlaceValue2 = 0;
+
+ if (y > 0) {
+ if (iInterlaceValue0 + 2 * iInterlaceValue1 + iInterlaceValue2 > iThreshold) {
+ if (bBlend) {
+ *pdst1 = (unsigned char)((y0 + 2*y1 + y2) >> 2);
+ } else {
+ // this method seems to work better than blending if the
+ // quality is pretty bad and the half pics don't fit together
+ if ((y % 2)==1) { // if odd simply copy the value
+ *pdst1 = *psrc1;
+ //*pdst1 = 0; // FIXME this is for adjusting an initial iThreshold
+ } else { // even interpolate the even line (upper + lower)/2
+ *pdst1 = (unsigned char)((y0 + y2) >> 1);
+ //*pdst1 = 0; // FIXME this is for adjusting an initial iThreshold
+ }
+ }
+ } else {
+ // so we went below the treshold and therefore we don't have to
+ // change anything
+ if (bShowDeinterlacedAreaOnly) {
+ // this is for testing to see how we should tune the treshhold
+ // and shows as the things that haven't change because the
+ // threshhold was to low?? (or shows that everything is ok :-)
+ *pdst1 = 0; // blank the point and so the interlac area
+ } else {
+ *pdst1 = *psrc1;
+ }
+ }
+ pdst1 = pdst1 + y_line;
+ }
+ }
+ }
+
+ gst_pad_push (filter->srcpad, buf);
+}
+
+static void
+gst_deinterlace_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+{
+ GstDeInterlace *filter;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail(GST_IS_DEINTERLACE(object));
+
+ filter = GST_DEINTERLACE(object);
+
+ switch (prop_id)
+ {
+ case ARG_DI_ONLY:
+ filter->show_deinterlaced_area_only = g_value_get_boolean (value);
+ break;
+ case ARG_BLEND:
+ filter->blend = g_value_get_boolean (value);
+ break;
+ case ARG_THRESHOLD:
+ filter->threshold = g_value_get_int (value);
+ break;
+ case ARG_EDGE_DETECT:
+ filter->edge_detect = g_value_get_int (value);
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+gst_deinterlace_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+ GstDeInterlace *filter;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail(GST_IS_DEINTERLACE(object));
+
+ filter = GST_DEINTERLACE(object);
+
+ switch (prop_id) {
+ case ARG_DI_ONLY:
+ g_value_set_boolean (value, filter->show_deinterlaced_area_only);
+ break;
+ case ARG_BLEND:
+ g_value_set_boolean (value, filter->blend);
+ break;
+ case ARG_THRESHOLD:
+ g_value_set_int (value, filter->threshold);
+ break;
+ case ARG_EDGE_DETECT:
+ g_value_set_int (value, filter->edge_detect);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static gboolean
+plugin_init (GModule *module, GstPlugin *plugin)
+{
+ GstElementFactory *factory;
+
+ factory = gst_elementfactory_new("deinterlace",GST_TYPE_DEINTERLACE,
+ &deinterlace_details);
+ g_return_val_if_fail(factory != NULL, FALSE);
+
+ gst_elementfactory_add_padtemplate (factory,
+ GST_PADTEMPLATE_GET (deinterlace_src_factory));
+ gst_elementfactory_add_padtemplate (factory,
+ GST_PADTEMPLATE_GET (deinterlace_sink_factory));
+
+ gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
+
+ return TRUE;
+}
+
+GstPluginDesc plugin_desc = {
+ GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "deinterlace",
+ plugin_init
+};
diff --git a/gst/deinterlace/gstdeinterlace.h b/gst/deinterlace/gstdeinterlace.h
new file mode 100644
index 00000000..c46c3af6
--- /dev/null
+++ b/gst/deinterlace/gstdeinterlace.h
@@ -0,0 +1,76 @@
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+#ifndef __GST_DEINTERLACE_H__
+#define __GST_DEINTERLACE_H__
+
+
+#include <config.h>
+#include <gst/gst.h>
+// #include <gst/meta/audioraw.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+#define GST_TYPE_DEINTERLACE \
+ (gst_deinterlace_get_type())
+#define GST_DEINTERLACE(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DEINTERLACE,GstDeInterlace))
+#define GST_DEINTERLACE_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ULAW,GstDeInterlace))
+#define GST_IS_DEINTERLACE(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DEINTERLACE))
+#define GST_IS_DEINTERLACE_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DEINTERLACE))
+
+typedef struct _GstDeInterlace GstDeInterlace;
+typedef struct _GstDeInterlaceClass GstDeInterlaceClass;
+
+struct _GstDeInterlace {
+ GstElement element;
+
+ GstPad *sinkpad, *srcpad;
+
+ gint width, height;
+
+ gboolean show_deinterlaced_area_only;
+ gboolean blend;
+ gint threshold_blend; // here we start blending
+ gint threshold; // here we start interpolating TODO FIXME
+ gint edge_detect;
+
+ gint picsize;
+ guchar *src;
+
+};
+
+struct _GstDeInterlaceClass {
+ GstElementClass parent_class;
+};
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
+#endif /* __GST_STEREO_H__ */
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-26 21:21:34 +0000