/* GStreamer * Copyright (C) <1999> Erik Walthinsen * Copyright (C) <2003> David Schleef * * 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, 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 */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #ifndef M_PI #define M_PI 3.14159265358979323846 #endif #define GST_TYPE_WARPTV \ (gst_warptv_get_type()) #define GST_WARPTV(obj) \ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WARPTV,GstWarpTV)) #define GST_WARPTV_CLASS(klass) \ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WARPTV,GstWarpTVClass)) #define GST_IS_WARPTV(obj) \ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WARPTV)) #define GST_IS_WARPTV_CLASS(obj) \ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WARPTV)) typedef struct _GstWarpTV GstWarpTV; typedef struct _GstWarpTVClass GstWarpTVClass; struct _GstWarpTV { GstVideoFilter videofilter; gint width, height; gint *offstable; gint32 *disttable; gint32 ctable[1024]; gint32 sintable[1024 + 256]; gint tval; }; struct _GstWarpTVClass { GstVideoFilterClass parent_class; }; GType gst_warptv_get_type (void); static void initSinTable (GstWarpTV * filter); static void initOffsTable (GstWarpTV * filter); static void initDistTable (GstWarpTV * filter); static const GstElementDetails warptv_details = GST_ELEMENT_DETAILS ("WarpTV effect", "Filter/Effect/Video", "WarpTV does realtime goo'ing of the video input", "Sam Lantinga "); static GstStaticPadTemplate gst_warptv_src_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBx ";" GST_VIDEO_CAPS_xRGB ";" GST_VIDEO_CAPS_BGRx ";" GST_VIDEO_CAPS_xBGR) ); static GstStaticPadTemplate gst_warptv_sink_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBx ";" GST_VIDEO_CAPS_xRGB ";" GST_VIDEO_CAPS_BGRx ";" GST_VIDEO_CAPS_xBGR) ); static GstVideoFilterClass *parent_class = NULL; static gboolean gst_warptv_set_caps (GstBaseTransform * btrans, GstCaps * incaps, GstCaps * outcaps) { GstWarpTV *filter = GST_WARPTV (btrans); GstStructure *structure; gboolean ret = FALSE; structure = gst_caps_get_structure (incaps, 0); if (gst_structure_get_int (structure, "width", &filter->width) && gst_structure_get_int (structure, "height", &filter->height)) { g_free (filter->disttable); g_free (filter->offstable); filter->offstable = g_malloc (filter->height * sizeof (guint32)); filter->disttable = g_malloc (filter->width * filter->height * sizeof (guint32)); initSinTable (filter); initOffsTable (filter); initDistTable (filter); ret = TRUE; } return ret; } static gboolean gst_warptv_get_unit_size (GstBaseTransform * btrans, GstCaps * caps, guint * size) { GstWarpTV *filter; GstStructure *structure; gboolean ret = FALSE; gint width, height; filter = GST_WARPTV (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 void initSinTable (GstWarpTV * filter) { gint32 *tptr, *tsinptr; double i; tsinptr = tptr = filter->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 initOffsTable (GstWarpTV * filter) { int y; for (y = 0; y < filter->height; y++) { filter->offstable[y] = y * filter->width; } } static void initDistTable (GstWarpTV * filter) { gint32 halfw, halfh, *distptr; #ifdef PS2 float x, y, m; #else double x, y, m; #endif halfw = filter->width >> 1; halfh = filter->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 (GstBaseTransform * trans, GstBuffer * in, GstBuffer * out) { GstWarpTV *warptv = GST_WARPTV (trans); int width = warptv->width; int height = warptv->height; guint32 *src = (guint32 *) GST_BUFFER_DATA (in); guint32 *dest = (guint32 *) GST_BUFFER_DATA (out); gint xw, yw, cw; gint32 c, i, x, y, dx, dy, maxx, maxy; gint32 skip, *ctptr, *distptr; gint32 *sintable, *ctable; GstFlowReturn ret = GST_FLOW_OK; gst_buffer_stamp (out, in); 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; sintable = warptv->sintable; ctable = warptv->ctable; skip = 0; /* video_width*sizeof(RGB32)/4 - video_width;; */ 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++ = src[warptv->offstable[dy] + dx]; } dest += skip; } warptv->tval = (warptv->tval + 1) & 511; return ret; } static void gst_warptv_base_init (gpointer g_class) { GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); gst_element_class_set_details (element_class, &warptv_details); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_warptv_sink_template)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_warptv_src_template)); } static void gst_warptv_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_warptv_set_caps); trans_class->get_unit_size = GST_DEBUG_FUNCPTR (gst_warptv_get_unit_size); trans_class->transform = GST_DEBUG_FUNCPTR (gst_warptv_transform); } static void gst_warptv_init (GTypeInstance * instance, gpointer g_class) { } GType gst_warptv_get_type (void) { static GType warptv_type = 0; if (!warptv_type) { static const GTypeInfo warptv_info = { sizeof (GstWarpTVClass), gst_warptv_base_init, NULL, gst_warptv_class_init, NULL, NULL, sizeof (GstWarpTV), 0, gst_warptv_init, }; warptv_type = g_type_register_static (GST_TYPE_VIDEO_FILTER, "GstWarpTV", &warptv_info, 0); } return warptv_type; }