mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-09 05:38:58 +00:00
266 lines
6.7 KiB
C
266 lines
6.7 KiB
C
/* GStreamer
|
|
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
|
* Copyright (C) <2003> David Schleef <ds@schleef.org>
|
|
*
|
|
* EffecTV - Realtime Digital Video Effector
|
|
* Copyright (C) 2001 FUKUCHI Kentarou
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* This file was (probably) generated from gstvideotemplate.c,
|
|
* gstvideotemplate.c,v 1.11 2004/01/07 08:56:45 ds Exp
|
|
*/
|
|
|
|
/* From main.c of warp-1.1:
|
|
*
|
|
* Simple DirectMedia Layer demo
|
|
* Realtime picture 'gooing'
|
|
* by sam lantinga slouken@devolution.com
|
|
*/
|
|
|
|
/**
|
|
* SECTION:element-warptv
|
|
* @title: warptv
|
|
*
|
|
* WarpTV does realtime goo'ing of the video input.
|
|
*
|
|
* ## Example launch line
|
|
* |[
|
|
* gst-launch-1.0 -v videotestsrc ! warptv ! videoconvert ! autovideosink
|
|
* ]| This pipeline shows the effect of warptv on a test stream.
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <string.h>
|
|
#include <math.h>
|
|
|
|
#include "gstwarp.h"
|
|
#include <gst/video/gstvideometa.h>
|
|
#include <gst/video/gstvideopool.h>
|
|
|
|
#ifndef M_PI
|
|
#define M_PI 3.14159265358979323846
|
|
#endif
|
|
|
|
#define gst_warptv_parent_class parent_class
|
|
G_DEFINE_TYPE (GstWarpTV, gst_warptv, GST_TYPE_VIDEO_FILTER);
|
|
|
|
static void initSinTable ();
|
|
static void initDistTable (GstWarpTV * filter, gint width, gint height);
|
|
|
|
static GstStaticPadTemplate gst_warptv_src_template =
|
|
GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ RGBx, xRGB, BGRx, xBGR }"))
|
|
);
|
|
|
|
static GstStaticPadTemplate gst_warptv_sink_template =
|
|
GST_STATIC_PAD_TEMPLATE ("sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ RGBx, xRGB, BGRx, xBGR }"))
|
|
);
|
|
|
|
static gboolean
|
|
gst_warptv_set_info (GstVideoFilter * vfilter, GstCaps * incaps,
|
|
GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info)
|
|
{
|
|
GstWarpTV *filter = GST_WARPTV (vfilter);
|
|
gint width, height;
|
|
|
|
width = GST_VIDEO_INFO_WIDTH (in_info);
|
|
height = GST_VIDEO_INFO_HEIGHT (in_info);
|
|
|
|
g_free (filter->disttable);
|
|
filter->disttable = g_malloc (width * height * sizeof (guint32));
|
|
initDistTable (filter, width, height);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gint32 sintable[1024 + 256];
|
|
|
|
static void
|
|
initSinTable (void)
|
|
{
|
|
gint32 *tptr, *tsinptr;
|
|
gint i;
|
|
|
|
tsinptr = tptr = sintable;
|
|
|
|
for (i = 0; i < 1024; i++)
|
|
*tptr++ = (int) (sin (i * M_PI / 512) * 32767);
|
|
|
|
for (i = 0; i < 256; i++)
|
|
*tptr++ = *tsinptr++;
|
|
}
|
|
|
|
static void
|
|
initDistTable (GstWarpTV * filter, gint width, gint height)
|
|
{
|
|
gint32 halfw, halfh, *distptr;
|
|
gint x, y;
|
|
float m;
|
|
|
|
halfw = width >> 1;
|
|
halfh = height >> 1;
|
|
|
|
distptr = filter->disttable;
|
|
|
|
m = sqrt ((double) (halfw * halfw + halfh * halfh));
|
|
|
|
for (y = -halfh; y < halfh; y++)
|
|
for (x = -halfw; x < halfw; x++)
|
|
#ifdef PS2
|
|
*distptr++ = ((int) ((sqrtf (x * x + y * y) * 511.9999) / m)) << 1;
|
|
#else
|
|
*distptr++ = ((int) ((sqrt (x * x + y * y) * 511.9999) / m)) << 1;
|
|
#endif
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_warptv_transform_frame (GstVideoFilter * filter, GstVideoFrame * in_frame,
|
|
GstVideoFrame * out_frame)
|
|
{
|
|
GstWarpTV *warptv = GST_WARPTV (filter);
|
|
gint width, height;
|
|
gint xw, yw, cw;
|
|
gint32 c, i, x, y, dx, dy, maxx, maxy;
|
|
gint32 *ctptr, *distptr;
|
|
gint32 *ctable;
|
|
guint32 *src, *dest;
|
|
gint sstride, dstride;
|
|
|
|
src = GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0);
|
|
dest = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0);
|
|
|
|
sstride = GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 0);
|
|
dstride = GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 0);
|
|
|
|
width = GST_VIDEO_FRAME_WIDTH (in_frame);
|
|
height = GST_VIDEO_FRAME_HEIGHT (in_frame);
|
|
|
|
GST_OBJECT_LOCK (warptv);
|
|
xw = (gint) (sin ((warptv->tval + 100) * M_PI / 128) * 30);
|
|
yw = (gint) (sin ((warptv->tval) * M_PI / 256) * -35);
|
|
cw = (gint) (sin ((warptv->tval - 70) * M_PI / 64) * 50);
|
|
xw += (gint) (sin ((warptv->tval - 10) * M_PI / 512) * 40);
|
|
yw += (gint) (sin ((warptv->tval + 30) * M_PI / 512) * 40);
|
|
|
|
ctptr = warptv->ctable;
|
|
distptr = warptv->disttable;
|
|
ctable = warptv->ctable;
|
|
|
|
c = 0;
|
|
|
|
for (x = 0; x < 512; x++) {
|
|
i = (c >> 3) & 0x3FE;
|
|
*ctptr++ = ((sintable[i] * yw) >> 15);
|
|
*ctptr++ = ((sintable[i + 256] * xw) >> 15);
|
|
c += cw;
|
|
}
|
|
maxx = width - 2;
|
|
maxy = height - 2;
|
|
|
|
for (y = 0; y < height - 1; y++) {
|
|
for (x = 0; x < width; x++) {
|
|
i = *distptr++;
|
|
dx = ctable[i + 1] + x;
|
|
dy = ctable[i] + y;
|
|
|
|
if (dx < 0)
|
|
dx = 0;
|
|
else if (dx > maxx)
|
|
dx = maxx;
|
|
|
|
if (dy < 0)
|
|
dy = 0;
|
|
else if (dy > maxy)
|
|
dy = maxy;
|
|
|
|
dest[x] = src[dy * sstride / 4 + dx];
|
|
}
|
|
dest += dstride / 4;
|
|
}
|
|
|
|
warptv->tval = (warptv->tval + 1) & 511;
|
|
GST_OBJECT_UNLOCK (warptv);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static gboolean
|
|
gst_warptv_start (GstBaseTransform * trans)
|
|
{
|
|
GstWarpTV *warptv = GST_WARPTV (trans);
|
|
|
|
warptv->tval = 0;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_warptv_finalize (GObject * object)
|
|
{
|
|
GstWarpTV *warptv = GST_WARPTV (object);
|
|
|
|
g_free (warptv->disttable);
|
|
warptv->disttable = NULL;
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gst_warptv_class_init (GstWarpTVClass * klass)
|
|
{
|
|
GObjectClass *gobject_class = (GObjectClass *) klass;
|
|
GstElementClass *gstelement_class = (GstElementClass *) klass;
|
|
GstBaseTransformClass *trans_class = (GstBaseTransformClass *) klass;
|
|
GstVideoFilterClass *vfilter_class = (GstVideoFilterClass *) klass;
|
|
|
|
gobject_class->finalize = gst_warptv_finalize;
|
|
|
|
gst_element_class_set_static_metadata (gstelement_class, "WarpTV effect",
|
|
"Filter/Effect/Video",
|
|
"WarpTV does realtime goo'ing of the video input",
|
|
"Sam Lantinga <slouken@devolution.com>");
|
|
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&gst_warptv_sink_template);
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&gst_warptv_src_template);
|
|
|
|
trans_class->start = GST_DEBUG_FUNCPTR (gst_warptv_start);
|
|
|
|
vfilter_class->set_info = GST_DEBUG_FUNCPTR (gst_warptv_set_info);
|
|
vfilter_class->transform_frame =
|
|
GST_DEBUG_FUNCPTR (gst_warptv_transform_frame);
|
|
|
|
initSinTable ();
|
|
}
|
|
|
|
static void
|
|
gst_warptv_init (GstWarpTV * warptv)
|
|
{
|
|
/* nothing to do */
|
|
}
|