mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-04 23:46:43 +00:00
256 lines
7 KiB
C
256 lines
7 KiB
C
/* GStreamer
|
|
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
|
*
|
|
* EffecTV:
|
|
* Copyright (C) 2001 FUKUCHI Kentarou
|
|
*
|
|
* Inspired by Adrian Likin's script for the GIMP.
|
|
* 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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
/**
|
|
* SECTION:element-shagadelictv
|
|
* @title: shagadelictv
|
|
*
|
|
* Oh behave, ShagedelicTV makes images shagadelic!
|
|
*
|
|
* ## Example launch line
|
|
* |[
|
|
* gst-launch-1.0 -v videotestsrc ! shagadelictv ! videoconvert ! autovideosink
|
|
* ]| This pipeline shows the effect of shagadelictv on a test stream.
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <math.h>
|
|
#include <string.h>
|
|
|
|
#include "gstshagadelic.h"
|
|
#include "gsteffectv.h"
|
|
|
|
#ifndef M_PI
|
|
#define M_PI 3.14159265358979323846
|
|
#endif
|
|
|
|
#define gst_shagadelictv_parent_class parent_class
|
|
G_DEFINE_TYPE (GstShagadelicTV, gst_shagadelictv, GST_TYPE_VIDEO_FILTER);
|
|
|
|
static void gst_shagadelic_initialize (GstShagadelicTV * filter,
|
|
GstVideoInfo * in_info);
|
|
|
|
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
|
|
#define CAPS_STR GST_VIDEO_CAPS_MAKE ("BGRx")
|
|
#else
|
|
#define CAPS_STR GST_VIDEO_CAPS_MAKE ("xRGB")
|
|
#endif
|
|
|
|
static GstStaticPadTemplate gst_shagadelictv_src_template =
|
|
GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS (CAPS_STR)
|
|
);
|
|
|
|
static GstStaticPadTemplate gst_shagadelictv_sink_template =
|
|
GST_STATIC_PAD_TEMPLATE ("sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS (CAPS_STR)
|
|
);
|
|
|
|
static gboolean
|
|
gst_shagadelictv_set_info (GstVideoFilter * vfilter, GstCaps * incaps,
|
|
GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info)
|
|
{
|
|
GstShagadelicTV *filter = GST_SHAGADELICTV (vfilter);
|
|
gint width, height, area;
|
|
|
|
width = GST_VIDEO_INFO_WIDTH (in_info);
|
|
height = GST_VIDEO_INFO_HEIGHT (in_info);
|
|
|
|
area = width * height;
|
|
|
|
g_free (filter->ripple);
|
|
g_free (filter->spiral);
|
|
filter->ripple = (guint8 *) g_malloc (area * 4);
|
|
filter->spiral = (guint8 *) g_malloc (area);
|
|
|
|
gst_shagadelic_initialize (filter, in_info);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_shagadelic_initialize (GstShagadelicTV * filter, GstVideoInfo * info)
|
|
{
|
|
int i, x, y;
|
|
#ifdef PS2
|
|
float xx, yy;
|
|
#else
|
|
double xx, yy;
|
|
#endif
|
|
gint width, height;
|
|
|
|
width = GST_VIDEO_INFO_WIDTH (info);
|
|
height = GST_VIDEO_INFO_HEIGHT (info);
|
|
|
|
i = 0;
|
|
for (y = 0; y < height * 2; y++) {
|
|
yy = y - height;
|
|
yy *= yy;
|
|
|
|
for (x = 0; x < width * 2; x++) {
|
|
xx = x - width;
|
|
#ifdef PS2
|
|
filter->ripple[i++] = ((unsigned int) (sqrtf (xx * xx + yy) * 8)) & 255;
|
|
#else
|
|
filter->ripple[i++] = ((unsigned int) (sqrt (xx * xx + yy) * 8)) & 255;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
i = 0;
|
|
for (y = 0; y < height; y++) {
|
|
yy = y - height / 2;
|
|
|
|
for (x = 0; x < width; x++) {
|
|
xx = x - width / 2;
|
|
#ifdef PS2
|
|
filter->spiral[i++] = ((unsigned int)
|
|
((atan2f (xx,
|
|
yy) / ((float) M_PI) * 256 * 9) + (sqrtf (xx * xx +
|
|
yy * yy) * 5))) & 255;
|
|
#else
|
|
filter->spiral[i++] = ((unsigned int)
|
|
((atan2 (xx, yy) / M_PI * 256 * 9) + (sqrt (xx * xx +
|
|
yy * yy) * 5))) & 255;
|
|
#endif
|
|
/* Here is another Swinger!
|
|
* ((atan2(xx, yy)/M_PI*256) + (sqrt(xx*xx+yy*yy)*10))&255;
|
|
*/
|
|
}
|
|
}
|
|
filter->rx = fastrand () % width;
|
|
filter->ry = fastrand () % height;
|
|
filter->bx = fastrand () % width;
|
|
filter->by = fastrand () % height;
|
|
filter->rvx = -2;
|
|
filter->rvy = -2;
|
|
filter->bvx = 2;
|
|
filter->bvy = 2;
|
|
filter->phase = 0;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_shagadelictv_transform_frame (GstVideoFilter * vfilter,
|
|
GstVideoFrame * in_frame, GstVideoFrame * out_frame)
|
|
{
|
|
GstShagadelicTV *filter = GST_SHAGADELICTV (vfilter);
|
|
guint32 *src, *dest;
|
|
gint x, y;
|
|
guint32 v;
|
|
guint8 r, g, b;
|
|
gint width, height;
|
|
|
|
src = GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0);
|
|
dest = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0);
|
|
|
|
width = GST_VIDEO_FRAME_WIDTH (in_frame);
|
|
height = GST_VIDEO_FRAME_HEIGHT (in_frame);
|
|
|
|
for (y = 0; y < height; y++) {
|
|
for (x = 0; x < width; x++) {
|
|
v = *src++ | 0x1010100;
|
|
v = (v - 0x707060) & 0x1010100;
|
|
v -= v >> 8;
|
|
/* Try another Babe!
|
|
* v = *src++;
|
|
* *dest++ = v & ((r<<16)|(g<<8)|b);
|
|
*/
|
|
r = ((gint8) (filter->ripple[(filter->ry + y) * width * 2 + filter->rx +
|
|
x] + filter->phase * 2)) >> 7;
|
|
g = ((gint8) (filter->spiral[y * width + x] + filter->phase * 3)) >> 7;
|
|
b = ((gint8) (filter->ripple[(filter->by + y) * width * 2 + filter->bx +
|
|
x] - filter->phase)) >> 7;
|
|
*dest++ = v & ((r << 16) | (g << 8) | b);
|
|
}
|
|
}
|
|
|
|
filter->phase -= 8;
|
|
if ((filter->rx + filter->rvx) < 0 || (filter->rx + filter->rvx) >= width)
|
|
filter->rvx = -filter->rvx;
|
|
if ((filter->ry + filter->rvy) < 0 || (filter->ry + filter->rvy) >= height)
|
|
filter->rvy = -filter->rvy;
|
|
if ((filter->bx + filter->bvx) < 0 || (filter->bx + filter->bvx) >= width)
|
|
filter->bvx = -filter->bvx;
|
|
if ((filter->by + filter->bvy) < 0 || (filter->by + filter->bvy) >= height)
|
|
filter->bvy = -filter->bvy;
|
|
filter->rx += filter->rvx;
|
|
filter->ry += filter->rvy;
|
|
filter->bx += filter->bvx;
|
|
filter->by += filter->bvy;
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static void
|
|
gst_shagadelictv_finalize (GObject * object)
|
|
{
|
|
GstShagadelicTV *filter = GST_SHAGADELICTV (object);
|
|
|
|
g_free (filter->ripple);
|
|
filter->ripple = NULL;
|
|
|
|
g_free (filter->spiral);
|
|
filter->spiral = NULL;
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gst_shagadelictv_class_init (GstShagadelicTVClass * klass)
|
|
{
|
|
GObjectClass *gobject_class = (GObjectClass *) klass;
|
|
GstElementClass *gstelement_class = (GstElementClass *) klass;
|
|
GstVideoFilterClass *vfilter_class = (GstVideoFilterClass *) klass;
|
|
|
|
gobject_class->finalize = gst_shagadelictv_finalize;
|
|
|
|
gst_element_class_set_static_metadata (gstelement_class, "ShagadelicTV",
|
|
"Filter/Effect/Video",
|
|
"Oh behave, ShagedelicTV makes images shagadelic!",
|
|
"Wim Taymans <wim.taymans@chello.be>");
|
|
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&gst_shagadelictv_sink_template);
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&gst_shagadelictv_src_template);
|
|
|
|
vfilter_class->set_info = GST_DEBUG_FUNCPTR (gst_shagadelictv_set_info);
|
|
vfilter_class->transform_frame =
|
|
GST_DEBUG_FUNCPTR (gst_shagadelictv_transform_frame);
|
|
}
|
|
|
|
static void
|
|
gst_shagadelictv_init (GstShagadelicTV * filter)
|
|
{
|
|
filter->ripple = NULL;
|
|
filter->spiral = NULL;
|
|
}
|