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2d624fc812
Original commit message from CVS: Fixed license statements in EffectTv plugins so they now state LGPL.
401 lines
9.5 KiB
C
401 lines
9.5 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. * This library is free software;
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* you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <string.h>
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#include "gsteffectv.h"
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#define GST_TYPE_AGINGTV \
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(gst_agingtv_get_type())
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#define GST_AGINGTV(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AGINGTV,GstAgingTV))
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#define GST_AGINGTV_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ULAW,GstAgingTV))
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#define GST_IS_AGINGTV(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AGINGTV))
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#define GST_IS_AGINGTV_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AGINGTV))
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#define SCRATCH_MAX 20
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typedef struct _scratch
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{
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gint life;
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gint x;
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gint dx;
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gint init;
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} scratch;
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static int dx[8] = { 1, 1, 0, -1, -1, -1, 0, 1};
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static int dy[8] = { 0, -1, -1, -1, 0, 1, 1, 1};
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typedef struct _GstAgingTV GstAgingTV;
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typedef struct _GstAgingTVClass GstAgingTVClass;
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struct _GstAgingTV
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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 video_size;
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gint area_scale;
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gint aging_mode;
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scratch scratches[SCRATCH_MAX];
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gint scratch_lines;
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gint dust_interval;
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gint pits_interval;
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};
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struct _GstAgingTVClass
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{
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GstElementClass parent_class;
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};
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GstElementDetails gst_agingtv_details = {
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"AgingTV",
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"Filter/Video/Effect",
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"Aply aging effect 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_agingtv_class_init (GstAgingTVClass * klass);
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static void gst_agingtv_init (GstAgingTV * filter);
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static void aging_mode_switch (GstAgingTV *filter);
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static void gst_agingtv_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_agingtv_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_agingtv_chain (GstPad * pad, GstBuffer * buf);
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static GstElementClass *parent_class = NULL;
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/*static guint gst_agingtv_signals[LAST_SIGNAL] = { 0 }; */
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GType gst_agingtv_get_type (void)
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{
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static GType agingtv_type = 0;
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if (!agingtv_type) {
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static const GTypeInfo agingtv_info = {
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sizeof (GstAgingTVClass), NULL,
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NULL,
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(GClassInitFunc) gst_agingtv_class_init,
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NULL,
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NULL,
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sizeof (GstAgingTV),
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0,
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(GInstanceInitFunc) gst_agingtv_init,
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};
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agingtv_type = g_type_register_static (GST_TYPE_ELEMENT, "GstAgingTV", &agingtv_info, 0);
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}
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return agingtv_type;
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}
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static void
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gst_agingtv_class_init (GstAgingTVClass * 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_agingtv_set_property;
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gobject_class->get_property = gst_agingtv_get_property;
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}
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static GstPadConnectReturn
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gst_agingtv_sinkconnect (GstPad * pad, GstCaps * caps)
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{
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GstAgingTV *filter;
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filter = GST_AGINGTV (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->video_size = filter->width * filter->height;
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filter->aging_mode = 0;
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aging_mode_switch (filter);
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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_agingtv_init (GstAgingTV * 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_agingtv_chain);
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gst_pad_set_connect_function (filter->sinkpad, gst_agingtv_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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}
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static unsigned int
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fastrand (void)
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{
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static unsigned int fastrand_val;
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return (fastrand_val = fastrand_val * 1103515245 + 12345);
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}
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static void
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coloraging (guint32 *src, guint32 *dest, gint video_area)
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{
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guint32 a, b;
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gint i;
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for (i = video_area; i; i--) {
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a = *src++;
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b = (a & 0xfcfcfc) >> 2;
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*dest++ = a - b + 0x181818 + ((fastrand () >> 8) & 0x101010);
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}
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}
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static void
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scratching (scratch *scratches, gint scratch_lines, guint32 *dest, gint width, gint height)
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{
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gint i, y, y1, y2;
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guint32 *p, a, b;
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scratch *scratch;
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for (i = 0; i < scratch_lines; i++) {
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scratch = &scratches[i];
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if (scratch->life) {
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scratch->x = scratch->x + scratch->dx;
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if (scratch->x < 0 || scratch->x > width * 256) {
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scratch->life = 0;
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break;
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}
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p = dest + (scratch->x >> 8);
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if (scratch->init) {
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y1 = scratch->init;
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scratch->init = 0;
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} else {
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y1 = 0;
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}
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scratch->life--;
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if (scratch->life) {
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y2 = height;
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} else {
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y2 = fastrand () % height;
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}
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for (y = y1; y < y2; y++) {
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a = *p & 0xfefeff;
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a += 0x202020;
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b = a & 0x1010100;
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*p = a | (b - (b >> 8));
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p += width;
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}
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} else {
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if ((fastrand () & 0xf0000000) == 0) {
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scratch->life = 2 + (fastrand () >> 27);
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scratch->x = fastrand () % (width * 256);
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scratch->dx = ((int) fastrand ()) >> 23;
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scratch->init = (fastrand () % (height - 1)) + 1;
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}
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}
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}
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}
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static void
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dusts (guint32 *dest, gint width, gint height, gint dust_interval, gint area_scale)
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{
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int i, j;
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int dnum;
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int d, len;
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guint x, y;
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if (dust_interval == 0) {
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if ((fastrand () & 0xf0000000) == 0) {
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dust_interval = fastrand () >> 29;
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}
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return;
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}
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dnum = area_scale * 4 + (fastrand() >> 27);
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for (i = 0; i < dnum; i++) {
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x = fastrand () % width;
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y = fastrand () % height;
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d = fastrand () >> 29;
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len = fastrand () % area_scale + 5;
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for (j = 0; j < len; j++) {
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dest[y * width + x] = 0x101010;
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y += dy[d];
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x += dx[d];
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if (y >= height || x >= width) break;
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d = (d + fastrand () % 3 - 1) & 7;
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}
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}
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dust_interval--;
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}
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static void
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pits (guint32 *dest, gint width, gint height, gint area_scale, gint pits_interval)
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{
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int i, j;
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int pnum, size, pnumscale;
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guint x, y;
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pnumscale = area_scale * 2;
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if (pits_interval) {
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pnum = pnumscale + (fastrand () % pnumscale);
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pits_interval--;
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} else {
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pnum = fastrand () % pnumscale;
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if ((fastrand () & 0xf8000000) == 0) {
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pits_interval = (fastrand () >> 28) + 20;
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}
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}
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for (i = 0; i < pnum; i++) {
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x = fastrand () % (width - 1);
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y = fastrand () % (height - 1);
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size = fastrand () >> 28;
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for (j = 0; j < size; j++) {
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x = x + fastrand () % 3 - 1;
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y = y + fastrand () % 3 - 1;
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if (y >= height || x >= width) break;
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dest[y * width + x] = 0xc0c0c0;
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}
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}
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}
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static void
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aging_mode_switch (GstAgingTV *filter)
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{
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switch (filter->aging_mode) {
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default:
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case 0:
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filter->scratch_lines = 7;
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/* Most of the parameters are tuned for 640x480 mode */
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/* area_scale is set to 10 when screen size is 640x480. */
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filter->area_scale = filter->width * filter->height / 64 / 480;
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}
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if (filter->area_scale <= 0)
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filter->area_scale = 1;
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}
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static void
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gst_agingtv_chain (GstPad * pad, GstBuffer * buf)
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{
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GstAgingTV *filter;
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guint32 *src, *dest;
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GstBuffer *outbuf;
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filter = GST_AGINGTV (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->video_size * sizeof (guint32));
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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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coloraging (src, dest, filter->video_size);
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scratching (filter->scratches, filter->scratch_lines, dest, filter->width, filter->height);
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pits (dest, filter->width, filter->height, filter->area_scale, filter->pits_interval);
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if(filter->area_scale > 1)
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dusts (dest, filter->width, filter->height, filter->dust_interval, filter->area_scale);
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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_agingtv_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
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{
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GstAgingTV *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_AGINGTV (object));
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filter = GST_AGINGTV (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_agingtv_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
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{
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GstAgingTV *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_AGINGTV (object));
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filter = GST_AGINGTV (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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