gstreamer/gst/effectv/gstedge.c
Stefan Kost eb1b7236f3 More G_OBJECT macro fixing.
Original commit message from CVS:
* ext/flac/gstflactag.c:
* gst/alpha/gstalpha.c:
* gst/debug/breakmydata.c:
* gst/debug/negotiation.c:
* gst/debug/testplugin.c:
* gst/effectv/gstaging.c:
* gst/effectv/gstdice.c:
* gst/effectv/gstedge.c:
* gst/effectv/gstquark.c:
* gst/effectv/gstrev.c:
* gst/effectv/gstshagadelic.c:
* gst/effectv/gstvertigo.c:
* gst/effectv/gstwarp.c:
* gst/multipart/multipartdemux.c:
* gst/multipart/multipartmux.c:
* gst/videobox/gstvideobox.c:
* gst/videofilter/gstgamma.c:
* gst/videofilter/gstvideotemplate.c:
* gst/videomixer/videomixer.c:
* sys/sunaudio/gstsunaudiosrc.h:
More G_OBJECT macro fixing.
2006-09-16 21:57:29 +00:00

299 lines
8 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* EffecTV:
* Copyright (C) 2001 FUKUCHI Kentarou
*
* EffecTV is free software. * 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 <gst/video/gstvideofilter.h>
#include <string.h>
#include <gst/video/video.h>
#define GST_TYPE_EDGETV \
(gst_edgetv_get_type())
#define GST_EDGETV(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_EDGETV,GstEdgeTV))
#define GST_EDGETV_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_EDGETV,GstEdgeTVClass))
#define GST_IS_EDGETV(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_EDGETV))
#define GST_IS_EDGETV_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_EDGETV))
typedef struct _GstEdgeTV GstEdgeTV;
typedef struct _GstEdgeTVClass GstEdgeTVClass;
struct _GstEdgeTV
{
GstVideoFilter videofilter;
gint width, height;
gint map_width, map_height;
guint32 *map;
gint video_width_margin;
};
struct _GstEdgeTVClass
{
GstVideoFilterClass parent_class;
};
GType gst_edgetv_get_type (void);
static const GstElementDetails gst_edgetv_details =
GST_ELEMENT_DETAILS ("EdgeTV effect",
"Filter/Effect/Video",
"Apply edge detect on video",
"Wim Taymans <wim.taymans@chello.be>");
static GstStaticPadTemplate gst_edgetv_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_BGRx)
);
static GstStaticPadTemplate gst_edgetv_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_BGRx)
);
static GstVideoFilterClass *parent_class = NULL;
static gboolean
gst_edgetv_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
GstCaps * outcaps)
{
GstEdgeTV *edgetv = GST_EDGETV (btrans);
GstStructure *structure;
gboolean ret = FALSE;
structure = gst_caps_get_structure (incaps, 0);
if (gst_structure_get_int (structure, "width", &edgetv->width) &&
gst_structure_get_int (structure, "height", &edgetv->height)) {
edgetv->map_width = edgetv->width / 4;
edgetv->map_height = edgetv->height / 4;
edgetv->video_width_margin = edgetv->width % 4;
g_free (edgetv->map);
edgetv->map =
(guint32 *) g_malloc (edgetv->map_width * edgetv->map_height *
sizeof (guint32) * 2);
memset (edgetv->map, 0,
edgetv->map_width * edgetv->map_height * sizeof (guint32) * 2);
ret = TRUE;
}
return ret;
}
static gboolean
gst_edgetv_get_unit_size (GstBaseTransform * btrans, GstCaps * caps,
guint * size)
{
GstEdgeTV *filter;
GstStructure *structure;
gboolean ret = FALSE;
gint width, height;
filter = GST_EDGETV (btrans);
structure = gst_caps_get_structure (caps, 0);
if (gst_structure_get_int (structure, "width", &width) &&
gst_structure_get_int (structure, "height", &height)) {
*size = width * height * 32 / 8;
ret = TRUE;
GST_DEBUG_OBJECT (filter, "our frame size is %d bytes (%dx%d)", *size,
width, height);
}
return ret;
}
static GstFlowReturn
gst_edgetv_transform (GstBaseTransform * trans, GstBuffer * in, GstBuffer * out)
{
GstEdgeTV *filter;
gint x, y, r, g, b;
guint32 *src, *dest;
guint32 p, q;
guint32 v0, v1, v2, v3;
GstFlowReturn ret = GST_FLOW_OK;
filter = GST_EDGETV (trans);
gst_buffer_stamp (out, in);
src = (guint32 *) GST_BUFFER_DATA (in);
dest = (guint32 *) GST_BUFFER_DATA (out);
src += filter->width * 4 + 4;
dest += filter->width * 4 + 4;
for (y = 1; y < filter->map_height - 1; y++) {
for (x = 1; x < filter->map_width - 1; x++) {
p = *src;
q = *(src - 4);
/* difference between the current pixel and right neighbor. */
r = ((p & 0xff0000) - (q & 0xff0000)) >> 16;
g = ((p & 0xff00) - (q & 0xff00)) >> 8;
b = (p & 0xff) - (q & 0xff);
r *= r;
g *= g;
b *= b;
r = r >> 5; /* To lack the lower bit for saturated addition, */
g = g >> 5; /* devide the value with 32, instead of 16. It is */
b = b >> 4; /* same as `v2 &= 0xfefeff' */
if (r > 127)
r = 127;
if (g > 127)
g = 127;
if (b > 255)
b = 255;
v2 = (r << 17) | (g << 9) | b;
/* difference between the current pixel and upper neighbor. */
q = *(src - filter->width * 4);
r = ((p & 0xff0000) - (q & 0xff0000)) >> 16;
g = ((p & 0xff00) - (q & 0xff00)) >> 8;
b = (p & 0xff) - (q & 0xff);
r *= r;
g *= g;
b *= b;
r = r >> 5;
g = g >> 5;
b = b >> 4;
if (r > 127)
r = 127;
if (g > 127)
g = 127;
if (b > 255)
b = 255;
v3 = (r << 17) | (g << 9) | b;
v0 = filter->map[(y - 1) * filter->map_width * 2 + x * 2];
v1 = filter->map[y * filter->map_width * 2 + (x - 1) * 2 + 1];
filter->map[y * filter->map_width * 2 + x * 2] = v2;
filter->map[y * filter->map_width * 2 + x * 2 + 1] = v3;
r = v0 + v1;
g = r & 0x01010100;
dest[0] = r | (g - (g >> 8));
r = v0 + v3;
g = r & 0x01010100;
dest[1] = r | (g - (g >> 8));
dest[2] = v3;
dest[3] = v3;
r = v2 + v1;
g = r & 0x01010100;
dest[filter->width] = r | (g - (g >> 8));
r = v2 + v3;
g = r & 0x01010100;
dest[filter->width + 1] = r | (g - (g >> 8));
dest[filter->width + 2] = v3;
dest[filter->width + 3] = v3;
dest[filter->width * 2] = v2;
dest[filter->width * 2 + 1] = v2;
dest[filter->width * 3] = v2;
dest[filter->width * 3 + 1] = v2;
src += 4;
dest += 4;
}
src += filter->width * 3 + 8 + filter->video_width_margin;
dest += filter->width * 3 + 8 + filter->video_width_margin;
}
return ret;
}
static void
gst_edgetv_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (element_class, &gst_edgetv_details);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_edgetv_sink_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_edgetv_src_template));
}
static void
gst_edgetv_class_init (gpointer klass, gpointer class_data)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstBaseTransformClass *trans_class;
gobject_class = (GObjectClass *) klass;
element_class = (GstElementClass *) klass;
trans_class = (GstBaseTransformClass *) klass;
parent_class = g_type_class_peek_parent (klass);
trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_edgetv_set_caps);
trans_class->get_unit_size = GST_DEBUG_FUNCPTR (gst_edgetv_get_unit_size);
trans_class->transform = GST_DEBUG_FUNCPTR (gst_edgetv_transform);
}
static void
gst_edgetv_init (GTypeInstance * instance, gpointer g_class)
{
GstEdgeTV *edgetv = GST_EDGETV (instance);
edgetv->map = NULL;
}
GType
gst_edgetv_get_type (void)
{
static GType edgetv_type = 0;
if (!edgetv_type) {
static const GTypeInfo edgetv_info = {
sizeof (GstEdgeTVClass),
gst_edgetv_base_init,
NULL,
(GClassInitFunc) gst_edgetv_class_init,
NULL,
NULL,
sizeof (GstEdgeTV),
0,
(GInstanceInitFunc) gst_edgetv_init,
};
edgetv_type =
g_type_register_static (GST_TYPE_VIDEO_FILTER, "GstEdgeTV",
&edgetv_info, 0);
}
return edgetv_type;
}