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-rw-r--r--ext/opencv/Makefile.am4
-rw-r--r--ext/opencv/gstopencv.c4
-rw-r--r--ext/opencv/gsttextoverlay.c (renamed from ext/opencv/gsttextwrite.c)91
-rw-r--r--ext/opencv/gsttextoverlay.h (renamed from ext/opencv/gsttextwrite.h)42
4 files changed, 72 insertions, 69 deletions
diff --git a/ext/opencv/Makefile.am b/ext/opencv/Makefile.am
index 7ddbe05d1..d5a70edad 100644
--- a/ext/opencv/Makefile.am
+++ b/ext/opencv/Makefile.am
@@ -16,7 +16,7 @@ libgstopencv_la_SOURCES = gstopencv.c \
gstfacedetect.c \
gstpyramidsegment.c \
gsttemplatematch.c \
- gsttextwrite.c
+ gsttextoverlay.c
# flags used to compile this facedetect
# add other _CFLAGS and _LIBS as needed
@@ -46,4 +46,4 @@ noinst_HEADERS = gstopencvvideofilter.h gstopencvutils.h \
gstfacedetect.h \
gstpyramidsegment.h \
gsttemplatematch.h \
- gsttextwrite.h
+ gsttextoverlay.h
diff --git a/ext/opencv/gstopencv.c b/ext/opencv/gstopencv.c
index 5b25e3072..e12ca7802 100644
--- a/ext/opencv/gstopencv.c
+++ b/ext/opencv/gstopencv.c
@@ -34,7 +34,7 @@
#include "gstfacedetect.h"
#include "gstpyramidsegment.h"
#include "gsttemplatematch.h"
-#include "gsttextwrite.h"
+#include "gsttextoverlay.h"
static gboolean
plugin_init (GstPlugin * plugin)
@@ -72,7 +72,7 @@ plugin_init (GstPlugin * plugin)
if (!gst_templatematch_plugin_init (plugin))
return FALSE;
- if (!gst_textwrite_plugin_init (plugin))
+ if (!gst_opencv_text_overlay_plugin_init (plugin))
return FALSE;
return TRUE;
diff --git a/ext/opencv/gsttextwrite.c b/ext/opencv/gsttextoverlay.c
index 612e20a43..92169440f 100644
--- a/ext/opencv/gsttextwrite.c
+++ b/ext/opencv/gsttextoverlay.c
@@ -44,14 +44,14 @@
*/
/**
- * SECTION:element-textwrite
+ * SECTION:element-opencvtextoverlay
*
- * FIXME:Describe textwrite here.
+ * opencvtextoverlay renders the text on top of the video frames
*
* <refsect2>
* <title>Example launch line</title>
* |[
- * gst-launch -v -m fakesrc ! textwrite ! fakesink silent=TRUE
+ * gst-launch-0.10 videotestsrc ! ffmpegcolorspace ! opencvtextoverlay text="Opencv Text Overlay " ! ffmpegcolorspace ! xvimagesink
* ]|
* </refsect2>
*/
@@ -63,10 +63,11 @@
#include <gst/gst.h>
#include "gstopencvutils.h"
-#include "gsttextwrite.h"
+#include "gsttextoverlay.h"
+
+GST_DEBUG_CATEGORY_STATIC (gst_opencv_text_overlay_debug);
+#define GST_CAT_DEFAULT gst_opencv_opencv_text_overlay_debug
-GST_DEBUG_CATEGORY_STATIC (gst_textwrite_debug);
-#define GST_CAT_DEFAULT gst_textwrite_debug
#define DEFAULT_PROP_TEXT ""
#define DEFAULT_PROP_WIDTH 1
#define DEFAULT_PROP_HEIGHT 1
@@ -114,23 +115,25 @@ static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB)
);
-GST_BOILERPLATE (Gsttextwrite, gst_textwrite, GstElement, GST_TYPE_ELEMENT);
+GST_BOILERPLATE (GstOpencvTextOverlay, gst_opencv_text_overlay, GstElement,
+ GST_TYPE_ELEMENT);
-static void gst_textwrite_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec);
-static void gst_textwrite_get_property (GObject * object, guint prop_id,
- GValue * value, GParamSpec * pspec);
+static void gst_opencv_text_overlay_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec);
+static void gst_opencv_text_overlay_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec);
-static gboolean gst_textwrite_set_caps (GstPad * pad, GstCaps * caps);
-static GstFlowReturn gst_textwrite_chain (GstPad * pad, GstBuffer * buf);
+static gboolean gst_opencv_text_overlay_set_caps (GstPad * pad, GstCaps * caps);
+static GstFlowReturn gst_opencv_text_overlay_chain (GstPad * pad,
+ GstBuffer * buf);
/* Clean up */
static void
-gst_textwrite_finalize (GObject * obj)
+gst_opencv_text_overlay_finalize (GObject * obj)
{
- Gsttextwrite *filter = GST_textwrite (obj);
+ GstOpencvTextOverlay *filter = GST_OPENCV_TEXT_OVERLAY (obj);
if (filter->cvImage) {
cvReleaseImage (&filter->cvImage);
@@ -144,14 +147,14 @@ gst_textwrite_finalize (GObject * obj)
/* GObject vmethod implementations */
static void
-gst_textwrite_base_init (gpointer gclass)
+gst_opencv_text_overlay_base_init (gpointer gclass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
gst_element_class_set_details_simple (element_class,
- "textwrite",
+ "opencvtextoverlay",
"Filter/Effect/Video",
- "Performs text writing to the video", "sreerenj<bsreerenj@gmail.com>");
+ "Write text on the top of video", "sreerenj<bsreerenj@gmail.com>");
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_factory));
@@ -159,19 +162,20 @@ gst_textwrite_base_init (gpointer gclass)
gst_static_pad_template_get (&sink_factory));
}
-/* initialize the textwrite's class */
+/* initialize the opencvtextoverlay's class */
static void
-gst_textwrite_class_init (GsttextwriteClass * klass)
+gst_opencv_text_overlay_class_init (GstOpencvTextOverlayClass * klass)
{
GObjectClass *gobject_class;
gobject_class = (GObjectClass *) klass;
parent_class = g_type_class_peek_parent (klass);
- gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_textwrite_finalize);
+ gobject_class->finalize =
+ GST_DEBUG_FUNCPTR (gst_opencv_text_overlay_finalize);
- gobject_class->set_property = gst_textwrite_set_property;
- gobject_class->get_property = gst_textwrite_get_property;
+ gobject_class->set_property = gst_opencv_text_overlay_set_property;
+ gobject_class->get_property = gst_opencv_text_overlay_get_property;
g_object_class_install_property (gobject_class, PROP_TEXT,
@@ -209,8 +213,6 @@ gst_textwrite_class_init (GsttextwriteClass * klass)
"Sets the color -B", 0, 255,
DEFAULT_PROP_COLOR, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-
-
g_object_class_install_property (gobject_class, PROP_HEIGHT,
g_param_spec_double ("height", "Height",
"Sets the height of fonts", 1.0, 5.0,
@@ -229,15 +231,16 @@ gst_textwrite_class_init (GsttextwriteClass * klass)
* initialize instance structure
*/
static void
-gst_textwrite_init (Gsttextwrite * filter, GsttextwriteClass * gclass)
+gst_opencv_text_overlay_init (GstOpencvTextOverlay * filter,
+ GstOpencvTextOverlayClass * gclass)
{
filter->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
gst_pad_set_setcaps_function (filter->sinkpad,
- GST_DEBUG_FUNCPTR (gst_textwrite_set_caps));
+ GST_DEBUG_FUNCPTR (gst_opencv_text_overlay_set_caps));
gst_pad_set_getcaps_function (filter->sinkpad,
GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
gst_pad_set_chain_function (filter->sinkpad,
- GST_DEBUG_FUNCPTR (gst_textwrite_chain));
+ GST_DEBUG_FUNCPTR (gst_opencv_text_overlay_chain));
filter->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
gst_pad_set_getcaps_function (filter->srcpad,
@@ -258,10 +261,10 @@ gst_textwrite_init (Gsttextwrite * filter, GsttextwriteClass * gclass)
}
static void
-gst_textwrite_set_property (GObject * object, guint prop_id,
+gst_opencv_text_overlay_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
- Gsttextwrite *filter = GST_textwrite (object);
+ GstOpencvTextOverlay *filter = GST_OPENCV_TEXT_OVERLAY (object);
switch (prop_id) {
case PROP_TEXT:
@@ -301,10 +304,10 @@ gst_textwrite_set_property (GObject * object, guint prop_id,
}
static void
-gst_textwrite_get_property (GObject * object, guint prop_id,
+gst_opencv_text_overlay_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
- Gsttextwrite *filter = GST_textwrite (object);
+ GstOpencvTextOverlay *filter = GST_OPENCV_TEXT_OVERLAY (object);
switch (prop_id) {
case PROP_TEXT:
@@ -344,15 +347,15 @@ gst_textwrite_get_property (GObject * object, guint prop_id,
/* this function handles the link with other elements */
static gboolean
-gst_textwrite_set_caps (GstPad * pad, GstCaps * caps)
+gst_opencv_text_overlay_set_caps (GstPad * pad, GstCaps * caps)
{
- Gsttextwrite *filter;
+ GstOpencvTextOverlay *filter;
GstPad *otherpad;
gint width, height;
GstStructure *structure;
- filter = GST_textwrite (gst_pad_get_parent (pad));
+ filter = GST_OPENCV_TEXT_OVERLAY (gst_pad_get_parent (pad));
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "width", &width);
@@ -371,11 +374,11 @@ gst_textwrite_set_caps (GstPad * pad, GstCaps * caps)
* this function does the actual processing
*/
static GstFlowReturn
-gst_textwrite_chain (GstPad * pad, GstBuffer * buf)
+gst_opencv_text_overlay_chain (GstPad * pad, GstBuffer * buf)
{
- Gsttextwrite *filter;
+ GstOpencvTextOverlay *filter;
- filter = GST_textwrite (GST_OBJECT_PARENT (pad));
+ filter = GST_OPENCV_TEXT_OVERLAY (GST_OBJECT_PARENT (pad));
filter->cvImage->imageData = (char *) GST_BUFFER_DATA (buf);
@@ -396,15 +399,15 @@ gst_textwrite_chain (GstPad * pad, GstBuffer * buf)
* register the element factories and other features
*/
gboolean
-gst_textwrite_plugin_init (GstPlugin * plugin)
+gst_opencv_text_overlay_plugin_init (GstPlugin * plugin)
{
/* debug category for fltering log messages
*
- * exchange the string 'Template textwrite' with your description
+ * exchange the string 'Template opencvtextoverlay' with your description
*/
- GST_DEBUG_CATEGORY_INIT (gst_textwrite_debug, "textwrite",
- 0, "Template textwrite");
+ GST_DEBUG_CATEGORY_INIT (gst_opencv_text_overlay_debug, "opencvtextoverlay",
+ 0, "Template opencvtextoverlay");
- return gst_element_register (plugin, "textwrite", GST_RANK_NONE,
- GST_TYPE_textwrite);
+ return gst_element_register (plugin, "opencvtextoverlay", GST_RANK_NONE,
+ GST_TYPE_OPENCV_TEXT_OVERLAY);
}
diff --git a/ext/opencv/gsttextwrite.h b/ext/opencv/gsttextoverlay.h
index 442519a61..e870cf525 100644
--- a/ext/opencv/gsttextwrite.h
+++ b/ext/opencv/gsttextoverlay.h
@@ -2,7 +2,7 @@
* GStreamer
* Copyright (C) 2005 Thomas Vander Stichele <thomas@apestaart.org>
* Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
- * Copyright (C) 2010 root <<user@hostname.org>>m
+ * Copyright (C) 2010 Sreerenj Balachandran <bsreerenj@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@@ -43,37 +43,37 @@
* Boston, MA 02111-1307, USA.
*/
-#ifndef __GST_textwrite_H__
-#define __GST_textwrite_H__
+#ifndef __GST_OPENCV_TEXT_OVERLAY_H__
+#define __GST_OPENCV_TEXT_OVERLAY_H__
#include <gst/gst.h>
#include <cv.h>
#include <cvaux.h>
#include <highgui.h>
+
G_BEGIN_DECLS
/* #defines don't like whitespacey bits */
-#define GST_TYPE_textwrite \
- (gst_textwrite_get_type())
-#define GST_textwrite(obj) \
- (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_textwrite,Gsttextwrite))
-#define GST_textwrite_CLASS(klass) \
- (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_textwrite,GsttextwriteClass))
-#define GST_IS_textwrite(obj) \
- (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_textwrite))
-#define GST_IS_textwrite_CLASS(klass) \
- (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_textwrite))
+#define GST_TYPE_OPENCV_TEXT_OVERLAY \
+ (gst_opencv_text_overlay_get_type())
+#define GST_OPENCV_TEXT_OVERLAY(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OPENCV_TEXT_OVERLAY,GstOpencvTextOverlay))
+#define GST_OPECV_TEXT_OVERLAY_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OPECV_TEXT_OVERLAY,GstOpencvTextOverlayClass))
+#define GST_IS_OPENCV_TEXT_OVERLAY(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OPENCV_TEXT_OVERLAY))
+#define GST_IS_OPENCV_TEXT_OVERLAY_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OPENCV_TEXT_OVERLAY))
-typedef struct _Gsttextwrite Gsttextwrite;
-typedef struct _GsttextwriteClass GsttextwriteClass;
+typedef struct _GstOpencvTextOverlay GstOpencvTextOverlay;
+typedef struct _GstOpencvTextOverlayClass GstOpencvTextOverlayClass;
-struct _Gsttextwrite
+struct _GstOpencvTextOverlay
{
GstElement element;
GstPad *sinkpad, *srcpad;
-
IplImage *cvImage;
CvMemStorage *cvStorage;
CvFont font;
@@ -88,14 +88,14 @@ struct _Gsttextwrite
};
-struct _GsttextwriteClass
+struct _GstOpencvTextOverlayClass
{
GstElementClass parent_class;
};
-GType gst_textwrite_get_type (void);
-gboolean gst_textwrite_plugin_init (GstPlugin * plugin);
+GType gst_opencv_text_overlay_get_type (void);
+gboolean gst_opencv_text_overlay_plugin_init (GstPlugin * plugin);
G_END_DECLS
-#endif /* __GST_textwrite_H__ */
+#endif /* __GST_OPENCV_TEXT_OVERLAY_H__ */
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