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-rw-r--r--gst/overlay/Makefile.am14
-rw-r--r--gst/overlay/gstoverlay.c399
-rw-r--r--gst/overlay/gstoverlay.h67
3 files changed, 480 insertions, 0 deletions
diff --git a/gst/overlay/Makefile.am b/gst/overlay/Makefile.am
new file mode 100644
index 00000000..38eac4cc
--- /dev/null
+++ b/gst/overlay/Makefile.am
@@ -0,0 +1,14 @@
+plugindir = $(libdir)/gstreamer-@GST_MAJORMINOR@
+
+plugin_LTLIBRARIES = libgstoverlay.la
+
+libgstoverlay_la_SOURCES = gstoverlay.c
+
+noinst_HEADERS = gstoverlay.h
+
+libgstoverlay_la_CFLAGS = $(GST_CFLAGS)
+libgstoverlay_la_LIBADD =
+libgstoverlay_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+
+EXTRA_DIST =
+
diff --git a/gst/overlay/gstoverlay.c b/gst/overlay/gstoverlay.c
new file mode 100644
index 00000000..79c061fa
--- /dev/null
+++ b/gst/overlay/gstoverlay.c
@@ -0,0 +1,399 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ * Copyright (C) <2003> David Schleef <ds@schleef.org>
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "gstoverlay.h"
+
+/* elementfactory information */
+static GstElementDetails overlay_details = {
+ "Video Overlay",
+ "Filter/Video",
+ "LGPL",
+ "Overlay multiple video streams",
+ VERSION,
+ "David Schleef <ds@schleef.org>",
+ "(C) 2002, 2003",
+};
+
+GST_PAD_TEMPLATE_FACTORY (overlay_src_factory,
+ "src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_CAPS_NEW (
+ "overlay_src",
+ "video/x-raw-yuv",
+ "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
+ "width", GST_PROPS_INT_RANGE (1, G_MAXINT),
+ "height", GST_PROPS_INT_RANGE (1, G_MAXINT),
+ "framerate",GST_PROPS_FLOAT_RANGE (0, G_MAXFLOAT)
+ )
+)
+
+GST_PAD_TEMPLATE_FACTORY (overlay_sink1_factory,
+ "sink1",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_CAPS_NEW (
+ "overlay_sink1",
+ "video/x-raw-yuv",
+ "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
+ "width", GST_PROPS_INT_RANGE (1, G_MAXINT),
+ "height", GST_PROPS_INT_RANGE (1, G_MAXINT),
+ "framerate",GST_PROPS_FLOAT_RANGE (0, G_MAXFLOAT)
+ )
+)
+
+GST_PAD_TEMPLATE_FACTORY (overlay_sink2_factory,
+ "sink2",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_CAPS_NEW (
+ "overlay_sink2",
+ "video/x-raw-yuv",
+ "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
+ "width", GST_PROPS_INT_RANGE (1, G_MAXINT),
+ "height", GST_PROPS_INT_RANGE (1, G_MAXINT),
+ "framerate",GST_PROPS_FLOAT_RANGE (0, G_MAXFLOAT)
+ )
+)
+
+GST_PAD_TEMPLATE_FACTORY (overlay_sink3_factory,
+ "sink3",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_CAPS_NEW (
+ "overlay_sink2",
+ "video/x-raw-yuv",
+ "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
+ "width", GST_PROPS_INT_RANGE (1, G_MAXINT),
+ "height", GST_PROPS_INT_RANGE (1, G_MAXINT),
+ "framerate",GST_PROPS_FLOAT_RANGE (0, G_MAXFLOAT)
+ )
+)
+
+/* OVERLAY signals and args */
+enum {
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum {
+ ARG_0,
+};
+
+
+static void gst_overlay_class_init (GstOverlayClass *klass);
+static void gst_overlay_init (GstOverlay *overlay);
+
+static void gst_overlay_loop (GstElement *element);
+
+static void gst_overlay_set_property (GObject *object, guint prop_id,
+ const GValue *value, GParamSpec *pspec);
+static void gst_overlay_get_property (GObject *object, guint prop_id,
+ GValue *value, GParamSpec *pspec);
+
+static GstElementClass *parent_class = NULL;
+/*static guint gst_overlay_signals[LAST_SIGNAL] = { 0 }; */
+
+static GType
+gst_overlay_get_type (void)
+{
+ static GType overlay_type = 0;
+
+ if (!overlay_type) {
+ static const GTypeInfo overlay_info = {
+ sizeof(GstOverlayClass),
+ NULL,
+ NULL,
+ (GClassInitFunc)gst_overlay_class_init,
+ NULL,
+ NULL,
+ sizeof(GstOverlay),
+ 0,
+ (GInstanceInitFunc)gst_overlay_init,
+ };
+ overlay_type = g_type_register_static(GST_TYPE_ELEMENT, "GstOverlay", &overlay_info, 0);
+ }
+ return overlay_type;
+}
+
+static void
+gst_overlay_class_init (GstOverlayClass *klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass*)klass;
+ gstelement_class = (GstElementClass*)klass;
+
+ parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
+
+ gobject_class->set_property = gst_overlay_set_property;
+ gobject_class->get_property = gst_overlay_get_property;
+
+}
+
+#if 0
+static GstCaps *gst_overlay_getcaps(GstPad *pad)
+{
+ GstCaps *caps;
+ GstOverlay *overlay;
+
+ overlay = GST_OVERLAY (gst_pad_get_parent (pad));
+
+ if(overlay->width && overlay->height){
+ caps = GST_CAPS_NEW (
+ "overlay_sink2",
+ "video/raw",
+ "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
+ "width", GST_PROPS_INT (overlay->width),
+ "height", GST_PROPS_INT (overlay->height)
+ );
+ }else{
+ caps = GST_CAPS_NEW (
+ "overlay_sink2",
+ "video/raw",
+ "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
+ "width", GST_PROPS_INT_RANGE (0, 4096),
+ "height", GST_PROPS_INT_RANGE (0, 4096)
+ );
+ }
+
+ return caps;
+}
+#endif
+
+static gboolean
+gst_overlay_sinkconnect (GstPad *pad, GstCaps *caps)
+{
+ GstOverlay *overlay;
+
+ overlay = GST_OVERLAY (gst_pad_get_parent (pad));
+
+ if (!GST_CAPS_IS_FIXED (caps))
+ return GST_PAD_LINK_DELAYED;
+
+ gst_caps_get_int (caps, "width", &overlay->width);
+ gst_caps_get_int (caps, "height", &overlay->height);
+ gst_caps_get_float (caps, "framerate", &overlay->framerate);
+
+ /* forward to the next plugin */
+ return gst_pad_try_set_caps(overlay->srcpad, gst_caps_copy_1(caps));
+}
+
+static void
+gst_overlay_init (GstOverlay *overlay)
+{
+ overlay->sinkpad1 = gst_pad_new_from_template (
+ GST_PAD_TEMPLATE_GET (overlay_sink1_factory), "sink1");
+ gst_pad_set_link_function (overlay->sinkpad1, gst_overlay_sinkconnect);
+ gst_element_add_pad (GST_ELEMENT (overlay), overlay->sinkpad1);
+
+ overlay->sinkpad2 = gst_pad_new_from_template (
+ GST_PAD_TEMPLATE_GET (overlay_sink2_factory), "sink2");
+ gst_pad_set_link_function (overlay->sinkpad2, gst_overlay_sinkconnect);
+ gst_element_add_pad (GST_ELEMENT (overlay), overlay->sinkpad2);
+
+ overlay->sinkpad3 = gst_pad_new_from_template (
+ GST_PAD_TEMPLATE_GET (overlay_sink3_factory), "sink3");
+ gst_pad_set_link_function (overlay->sinkpad3, gst_overlay_sinkconnect);
+ gst_element_add_pad (GST_ELEMENT (overlay), overlay->sinkpad3);
+
+ overlay->srcpad = gst_pad_new_from_template (
+ GST_PAD_TEMPLATE_GET (overlay_src_factory), "src");
+ gst_element_add_pad (GST_ELEMENT (overlay), overlay->srcpad);
+
+ gst_element_set_loop_function (GST_ELEMENT (overlay), gst_overlay_loop);
+}
+
+static void
+gst_overlay_blend_i420 (guint8 *out, guint8 *in1, guint8 *in2, guint8 *in3,
+ gint width, gint height)
+{
+ int mask;
+ int i, j;
+ guint8 *in1u, *in1v, *in2u, *in2v, *outu, *outv;
+ int lumsize;
+ int chromsize;
+ int width2 = width/2;
+ int height2 = height/2;
+
+ lumsize = width * height;
+ chromsize = width2 * height2;
+
+ in1u = in1 + lumsize; in1v = in1u + chromsize;
+ in2u = in2 + lumsize; in2v = in2u + chromsize;
+ outu = out + lumsize; outv = outu + chromsize;
+
+ for (i = 0; i < height; i++) {
+ for (j = 0; j < width; j++) {
+ mask = in3[i*width + j];
+ out[i*width+j] = ((in1[i*width+j] * mask) +
+ (in2[i*width+j] * (255 - mask))) >> 8;
+ }
+ }
+
+ for (i = 0; i < height/2; i++) {
+ for (j = 0; j < width/2; j++) {
+ mask = (in3[(i*2)*width + (j*2)] + in3[(i*2 + 1)*width + (j*2)] +
+ in3[(i*2)*width + (j*2 + 1)] + in3[(i*2 + 1)*width + (j*2 + 1)]) / 4;
+ outu[i*width2 + j] = ((in1u[i*width2+j] * mask) +
+ (in2u[i*width2 + j] * (255 - mask))) >> 8;
+ outv[i*width2 + j] = ((in1v[i*width2+j] * mask) +
+ (in2v[i*width2 + j] * (255 - mask))) >> 8;
+ }
+ }
+}
+
+static void
+gst_overlay_loop (GstElement *element)
+{
+ GstOverlay *overlay;
+ GstBuffer *out;
+ GstBuffer *in1 = NULL, *in2 = NULL, *in3 = NULL;
+ int size;
+
+ overlay = GST_OVERLAY (element);
+
+ in1 = gst_pad_pull (overlay->sinkpad1);
+ if (GST_IS_EVENT (in1)) {
+ gst_pad_push (overlay->srcpad, in1);
+ /* FIXME */
+ return;
+ }
+ in2 = gst_pad_pull (overlay->sinkpad2);
+ if (GST_IS_EVENT (in2)) {
+ gst_pad_push (overlay->srcpad, in2);
+ /* FIXME */
+ return;
+ }
+ in3 = gst_pad_pull (overlay->sinkpad3);
+ if (GST_IS_EVENT (in3)) {
+ gst_pad_push (overlay->srcpad, in3);
+ /* FIXME */
+ return;
+ }
+
+ g_return_if_fail(in1 != NULL);
+ g_return_if_fail(in2 != NULL);
+ g_return_if_fail(in3 != NULL);
+
+ size = (overlay->width * overlay->height * 3)/2;
+ g_return_if_fail(GST_BUFFER_SIZE(in1) != size);
+ g_return_if_fail(GST_BUFFER_SIZE(in2) != size);
+ g_return_if_fail(GST_BUFFER_SIZE(in3) != size);
+
+ out = gst_buffer_new_and_alloc (size);
+
+ if (!GST_PAD_CAPS (overlay->srcpad)) {
+ if (!gst_pad_try_set_caps (overlay->srcpad,
+ GST_CAPS_NEW (
+ "overlay_srccaps",
+ "video/x-raw-yuv",
+ "format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
+ "width", GST_PROPS_INT (overlay->width),
+ "height", GST_PROPS_INT (overlay->height),
+ "framerate",GST_PROPS_FLOAT (overlay->framerate)
+ )))
+ {
+ gst_element_error (element, "cannot set caps");
+ return;
+ }
+ }
+
+ gst_overlay_blend_i420 (GST_BUFFER_DATA (out),
+ GST_BUFFER_DATA (in1),
+ GST_BUFFER_DATA (in2),
+ GST_BUFFER_DATA (in3),
+ overlay->width, overlay->height);
+
+ GST_BUFFER_TIMESTAMP (out) = GST_BUFFER_TIMESTAMP (in1);
+ GST_BUFFER_DURATION (out) = GST_BUFFER_DURATION (in1);
+
+ gst_buffer_unref (in1);
+ gst_buffer_unref (in2);
+ gst_buffer_unref (in3);
+
+ gst_pad_push (overlay->srcpad, out);
+}
+
+static void
+gst_overlay_set_property (GObject *object, guint prop_id,
+ const GValue *value, GParamSpec *pspec)
+{
+ GstOverlay *overlay;
+
+ overlay = GST_OVERLAY(object);
+
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_overlay_get_property (GObject *object, guint prop_id,
+ GValue *value, GParamSpec *pspec)
+{
+ GstOverlay *overlay;
+
+ overlay = GST_OVERLAY(object);
+
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+
+static gboolean
+plugin_init (GModule *module, GstPlugin *plugin)
+{
+ GstElementFactory *factory;
+
+ factory = gst_element_factory_new("overlay",GST_TYPE_OVERLAY,
+ &overlay_details);
+ g_return_val_if_fail(factory != NULL, FALSE);
+
+ gst_element_factory_add_pad_template (factory,
+ GST_PAD_TEMPLATE_GET (overlay_sink1_factory));
+ gst_element_factory_add_pad_template (factory,
+ GST_PAD_TEMPLATE_GET (overlay_sink2_factory));
+ gst_element_factory_add_pad_template (factory,
+ GST_PAD_TEMPLATE_GET (overlay_sink3_factory));
+ gst_element_factory_add_pad_template (factory,
+ GST_PAD_TEMPLATE_GET (overlay_src_factory));
+
+ gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
+
+ return TRUE;
+}
+
+GstPluginDesc plugin_desc = {
+ GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "overlay",
+ plugin_init
+};
+
diff --git a/gst/overlay/gstoverlay.h b/gst/overlay/gstoverlay.h
new file mode 100644
index 00000000..784c367b
--- /dev/null
+++ b/gst/overlay/gstoverlay.h
@@ -0,0 +1,67 @@
+/* GStreamer
+ * 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_OVERLAY_H__
+#define __GST_OVERLAY_H__
+
+#include <gst/gst.h>
+
+#define GST_TYPE_OVERLAY \
+ (gst_overlay_get_type())
+#define GST_OVERLAY(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OVERLAY,GstOverlay))
+#define GST_OVERLAY_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OVERLAY,GstOverlay))
+#define GST_IS_OVERLAY(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OVERLAY))
+#define GST_IS_OVERLAY_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OVERLAY))
+
+typedef struct _GstOverlay GstOverlay;
+typedef struct _GstOverlayClass GstOverlayClass;
+
+struct _GstOverlay {
+ GstElement element;
+
+ GstPad *srcpad;
+ GstPad *sinkpad1;
+ GstPad *sinkpad2;
+ GstPad *sinkpad3;
+
+ gint format;
+ gint width;
+ gint height;
+
+ gint duration;
+ gint position;
+
+ gint type;
+ gint fps;
+ gint border;
+ gint depth;
+
+ gfloat framerate;
+};
+
+struct _GstOverlayClass {
+ GstElementClass parent_class;
+};
+
+#endif /* __GST_OVERLAY_H__ */
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-05 17:51:23 +0000