mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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4a1c198502
Original commit message from CVS: reorg
297 lines
7.7 KiB
C
297 lines
7.7 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* EffecTV:
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* Copyright (C) 2001 FUKUCHI Kentarou
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*
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* EffecTV is free software. We release this product under the terms of the
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* GNU General Public License version 2. The license is included in the file
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* COPYING.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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* A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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*/
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#include <string.h>
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#include <gst/gst.h>
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#include "gsteffectv.h"
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#define GST_TYPE_EDGETV \
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(gst_edgetv_get_type())
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#define GST_EDGETV(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_EDGETV,GstEdgeTV))
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#define GST_EDGETV_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ULAW,GstEdgeTV))
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#define GST_IS_EDGETV(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_EDGETV))
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#define GST_IS_EDGETV_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_EDGETV))
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typedef struct _GstEdgeTV GstEdgeTV;
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typedef struct _GstEdgeTVClass GstEdgeTVClass;
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struct _GstEdgeTV
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{
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GstElement element;
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GstPad *sinkpad, *srcpad;
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gint width, height;
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gint map_width, map_height;
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guint32 *map;
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gint video_width_margin;
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};
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struct _GstEdgeTVClass
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{
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GstElementClass parent_class;
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};
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GstElementDetails gst_edgetv_details = {
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"EdgeTV",
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"Filter/Video/Effect",
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"Aply edge detect on video",
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VERSION,
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"Wim Taymans <wim.taymans@chello.be>",
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"(C) 2001 FUKUCHI Kentarou",
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};
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/* Filter 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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enum
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{
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ARG_0,
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};
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static void gst_edgetv_class_init (GstEdgeTVClass * klass);
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static void gst_edgetv_init (GstEdgeTV * filter);
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static void gst_edgetv_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_edgetv_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_edgetv_chain (GstPad * pad, GstBuffer * buf);
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static GstElementClass *parent_class = NULL;
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/*static guint gst_edgetv_signals[LAST_SIGNAL] = { 0 }; */
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GType gst_edgetv_get_type (void)
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{
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static GType edgetv_type = 0;
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if (!edgetv_type) {
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static const GTypeInfo edgetv_info = {
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sizeof (GstEdgeTVClass), NULL,
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NULL,
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(GClassInitFunc) gst_edgetv_class_init,
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NULL,
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NULL,
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sizeof (GstEdgeTV),
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0,
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(GInstanceInitFunc) gst_edgetv_init,
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};
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edgetv_type = g_type_register_static (GST_TYPE_ELEMENT, "GstEdgeTV", &edgetv_info, 0);
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}
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return edgetv_type;
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}
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static void
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gst_edgetv_class_init (GstEdgeTVClass * 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_ref (GST_TYPE_ELEMENT);
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gobject_class->set_property = gst_edgetv_set_property;
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gobject_class->get_property = gst_edgetv_get_property;
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}
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static GstPadConnectReturn
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gst_edgetv_sinkconnect (GstPad * pad, GstCaps * caps)
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{
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GstEdgeTV *filter;
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filter = GST_EDGETV (gst_pad_get_parent (pad));
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if (!GST_CAPS_IS_FIXED (caps))
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return GST_PAD_CONNECT_DELAYED;
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gst_caps_get_int (caps, "width", &filter->width);
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gst_caps_get_int (caps, "height", &filter->height);
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filter->map_width = filter->width / 4;
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filter->map_height = filter->height / 4;
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filter->video_width_margin = filter->width - filter->map_width * 4;
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g_free (filter->map);
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filter->map = (guint32 *)g_malloc (filter->map_width * filter->map_height * sizeof(guint32) * 2);
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bzero(filter->map, filter->map_width * filter->map_height * sizeof(guint32) * 2);
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if (gst_pad_try_set_caps (filter->srcpad, caps)) {
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return GST_PAD_CONNECT_OK;
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}
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return GST_PAD_CONNECT_REFUSED;
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}
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static void
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gst_edgetv_init (GstEdgeTV * filter)
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{
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filter->sinkpad = gst_pad_new_from_template (gst_effectv_sink_factory (), "sink");
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gst_pad_set_chain_function (filter->sinkpad, gst_edgetv_chain);
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gst_pad_set_connect_function (filter->sinkpad, gst_edgetv_sinkconnect);
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gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
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filter->srcpad = gst_pad_new_from_template (gst_effectv_src_factory (), "src");
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gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
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filter->map = NULL;
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}
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static void
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gst_edgetv_chain (GstPad * pad, GstBuffer * buf)
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{
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GstEdgeTV *filter;
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int x, y;
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int r, g, b;
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guint32 *src, *dest;
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guint32 p, q;
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guint32 v0, v1, v2, v3;
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GstBuffer *outbuf;
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filter = GST_EDGETV (gst_pad_get_parent (pad));
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src = (guint32 *) GST_BUFFER_DATA (buf);
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outbuf = gst_buffer_new ();
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GST_BUFFER_SIZE (outbuf) = (filter->width * filter->height * 4);
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dest = (guint32 *) GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
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GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
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src += filter->width * 4 + 4;
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dest += filter->width * 4 + 4;
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for (y = 1; y < filter->map_height - 1; y++) {
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for (x = 1; x < filter->map_width - 1; x++) {
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p = *src;
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q = *(src - 4);
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/* difference between the current pixel and right neighbor. */
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r = ((p & 0xff0000) - (q & 0xff0000)) >> 16;
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g = ((p & 0xff00) - (q & 0xff00)) >> 8;
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b = (p & 0xff) - (q & 0xff);
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r *= r;
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g *= g;
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b *= b;
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r = r >> 5; /* To lack the lower bit for saturated addition, */
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g = g >> 5; /* devide the value with 32, instead of 16. It is */
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b = b >> 4; /* same as `v2 &= 0xfefeff' */
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if (r > 127)
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r = 127;
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if (g > 127)
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g = 127;
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if (b > 255)
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b = 255;
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v2 = (r << 17) | (g << 9) | b;
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/* difference between the current pixel and upper neighbor. */
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q = *(src - filter->width * 4);
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r = ((p & 0xff0000) - (q & 0xff0000)) >> 16;
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g = ((p & 0xff00) - (q & 0xff00)) >> 8;
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b = (p & 0xff) - (q & 0xff);
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r *= r;
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g *= g;
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b *= b;
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r = r >> 5;
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g = g >> 5;
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b = b >> 4;
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if (r > 127)
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r = 127;
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if (g > 127)
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g = 127;
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if (b > 255)
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b = 255;
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v3 = (r << 17) | (g << 9) | b;
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v0 = filter->map[(y - 1) * filter->map_width * 2 + x * 2];
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v1 = filter->map[y * filter->map_width * 2 + (x - 1) * 2 + 1];
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filter->map[y * filter->map_width * 2 + x * 2] = v2;
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filter->map[y * filter->map_width * 2 + x * 2 + 1] = v3;
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r = v0 + v1;
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g = r & 0x01010100;
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dest[0] = r | (g - (g >> 8));
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r = v0 + v3;
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g = r & 0x01010100;
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dest[1] = r | (g - (g >> 8));
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dest[2] = v3;
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dest[3] = v3;
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r = v2 + v1;
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g = r & 0x01010100;
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dest[filter->width] = r | (g - (g >> 8));
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r = v2 + v3;
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g = r & 0x01010100;
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dest[filter->width + 1] = r | (g - (g >> 8));
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dest[filter->width + 2] = v3;
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dest[filter->width + 3] = v3;
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dest[filter->width * 2] = v2;
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dest[filter->width * 2 + 1] = v2;
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dest[filter->width * 3] = v2;
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dest[filter->width * 3 + 1] = v2;
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src += 4;
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dest += 4;
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}
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src += filter->width * 3 + 8 + filter->video_width_margin;
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dest += filter->width * 3 + 8 + filter->video_width_margin;
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}
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gst_buffer_unref (buf);
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gst_pad_push (filter->srcpad, outbuf);
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}
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static void
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gst_edgetv_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
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{
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GstEdgeTV *filter;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail (GST_IS_EDGETV (object));
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filter = GST_EDGETV (object);
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switch (prop_id) {
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default:
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break;
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}
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}
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static void
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gst_edgetv_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
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{
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GstEdgeTV *filter;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail (GST_IS_EDGETV (object));
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filter = GST_EDGETV (object);
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switch (prop_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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