gstreamer/gst/effectv/gstvertigo.c
David Schleef 0d0ff109d3 code cleanup. Change bzero() to memset(). Remove duplicate ; at ends of lines.
Original commit message from CVS:
code cleanup.  Change bzero() to memset().  Remove duplicate ; at ends
of lines.
* ext/cdparanoia/gstcdparanoia.c: (cdparanoia_event):
* ext/flac/gstflactag.c: (gst_flac_tag_chain):
* ext/xvid/gstxviddec.c: (gst_xviddec_src_link):
* gst-libs/gst/play/play.c: (gst_play_get_sink_element):
* gst/ac3parse/gstac3parse.c: (gst_ac3parse_chain):
* gst/effectv/gstedge.c: (gst_edgetv_sinkconnect):
* gst/effectv/gstvertigo.c: (gst_vertigotv_sinkconnect):
* gst/intfloat/float22int.c: (gst_float2_2_int_getcaps),
(gst_float2_2_int_link):
* gst/mpeg2sub/gstmpeg2subt.c: (gst_mpeg2subt_chain_subtitle):
* gst/rtjpeg/RTjpeg.c: (RTjpeg_init_mcompress):
* gst/tcp/gsttcpsink.c: (gst_tcpsink_init_send):
* gst/tcp/gsttcpsrc.c: (gst_tcpsrc_init_receive):
* gst/udp/gstudpsink.c: (gst_udpsink_init_send):
* gst/udp/gstudpsrc.c: (gst_udpsrc_init_receive):
* sys/v4l/gstv4lelement.c: (gst_v4lelement_init):
* sys/v4l2/v4l2src_calls.c: (gst_v4l2src_set_capture):
* testsuite/gst-lint: Add tests for bzero and ;;
2004-02-02 20:09:09 +00:00

383 lines
10 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* EffecTV:
* Copyright (C) 2001 FUKUCHI Kentarou
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <math.h>
#include <string.h>
#include <gst/gst.h>
#include "gsteffectv.h"
#define GST_TYPE_VERTIGOTV \
(gst_vertigotv_get_type())
#define GST_VERTIGOTV(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VERTIGOTV,GstVertigoTV))
#define GST_VERTIGOTV_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ULAW,GstVertigoTV))
#define GST_IS_VERTIGOTV(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VERTIGOTV))
#define GST_IS_VERTIGOTV_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VERTIGOTV))
typedef struct _GstVertigoTV GstVertigoTV;
typedef struct _GstVertigoTVClass GstVertigoTVClass;
struct _GstVertigoTV
{
GstElement element;
GstPad *sinkpad, *srcpad;
gint width, height;
guint32 *buffer;
guint32 *current_buffer, *alt_buffer;
gint dx, dy;
gint sx, sy;
gdouble phase;
gdouble phase_increment;
gdouble zoomrate;
};
struct _GstVertigoTVClass
{
GstElementClass parent_class;
void (*reset) (GstElement *element);
};
/* elementfactory information */
static GstElementDetails gst_vertigotv_details = GST_ELEMENT_DETAILS (
"VertigoTV",
"Filter/Effect/Video",
"A loopback alpha blending effector with rotating and scaling",
"Wim Taymans <wim.taymans@chello.be>"
);
/* Filter signals and args */
enum
{
/* FILL ME */
RESET_SIGNAL,
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_SPEED,
ARG_ZOOM_SPEED,
};
static void gst_vertigotv_base_init (gpointer g_class);
static void gst_vertigotv_class_init (GstVertigoTVClass * klass);
static void gst_vertigotv_init (GstVertigoTV * filter);
static void gst_vertigotv_reset_handler (GstElement *element);
static void gst_vertigotv_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_vertigotv_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_vertigotv_chain (GstPad * pad, GstData *_data);
static GstElementClass *parent_class = NULL;
static guint gst_vertigotv_signals[LAST_SIGNAL] = { 0 };
GType gst_vertigotv_get_type (void)
{
static GType vertigotv_type = 0;
if (!vertigotv_type) {
static const GTypeInfo vertigotv_info = {
sizeof (GstVertigoTVClass),
gst_vertigotv_base_init,
NULL,
(GClassInitFunc) gst_vertigotv_class_init,
NULL,
NULL,
sizeof (GstVertigoTV),
0,
(GInstanceInitFunc) gst_vertigotv_init,
};
vertigotv_type = g_type_register_static (GST_TYPE_ELEMENT, "GstVertigoTV", &vertigotv_info, 0);
}
return vertigotv_type;
}
static void
gst_vertigotv_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_effectv_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_effectv_sink_template));
gst_element_class_set_details (element_class, &gst_vertigotv_details);
}
static void
gst_vertigotv_class_init (GstVertigoTVClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gst_vertigotv_signals[RESET_SIGNAL] =
g_signal_new ("reset_parms",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GstVertigoTVClass, reset),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
klass->reset = gst_vertigotv_reset_handler;
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SPEED,
g_param_spec_float ("speed","Speed","Control the speed of movement",
0.01, 100.0, 0.02, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ZOOM_SPEED,
g_param_spec_float ("zoom_speed","Zoom Speed","Control the rate of zooming",
1.01, 1.1, 1.01, G_PARAM_READWRITE));
gobject_class->set_property = gst_vertigotv_set_property;
gobject_class->get_property = gst_vertigotv_get_property;
}
static void
gst_vertigotv_reset_handler (GstElement *element)
{
GstVertigoTV *filter = GST_VERTIGOTV (element);
filter->phase = 0.0;
filter->phase_increment = 0.02;
filter->zoomrate = 1.01;
}
static GstPadLinkReturn
gst_vertigotv_sinkconnect (GstPad * pad, const GstCaps * caps)
{
GstVertigoTV *filter;
gint area;
GstStructure *structure;
filter = GST_VERTIGOTV (gst_pad_get_parent (pad));
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "width", &filter->width);
gst_structure_get_int (structure, "height", &filter->height);
area = filter->width * filter->height;
g_free (filter->buffer);
filter->buffer = (guint32 *) g_malloc (area * 2 * sizeof(guint32));
memset (filter->buffer, 0, area * 2 * sizeof(guint32));
filter->current_buffer = filter->buffer;
filter->alt_buffer = filter->buffer + area;
filter->phase = 0;
return gst_pad_try_set_caps (filter->srcpad, caps);
}
static void
gst_vertigotv_init (GstVertigoTV * filter)
{
filter->sinkpad = gst_pad_new_from_template (
gst_static_pad_template_get (&gst_effectv_sink_template), "sink");
gst_pad_set_chain_function (filter->sinkpad, gst_vertigotv_chain);
gst_pad_set_link_function (filter->sinkpad, gst_vertigotv_sinkconnect);
gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
filter->srcpad = gst_pad_new_from_template (
gst_static_pad_template_get (&gst_effectv_src_template), "src");
gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
filter->buffer = NULL;
filter->phase = 0.0;
filter->phase_increment = 0.02;
filter->zoomrate = 1.01;
}
static void
gst_vertigotv_set_parms (GstVertigoTV *filter)
{
double vx, vy;
double t;
double x, y;
double dizz;
dizz = sin (filter->phase) * 10 + sin (filter->phase*1.9+5) * 5;
x = filter->width / 2;
y = filter->height / 2;
t = (x*x + y*y) * filter->zoomrate;
if (filter->width > filter->height) {
if (dizz >= 0) {
if (dizz > x) dizz = x;
vx = (x * (x - dizz) + y * y) / t;
} else {
if (dizz < -x) dizz = -x;
vx = (x * (x + dizz) + y * y) / t;
}
vy = (dizz * y) / t;
} else {
if (dizz >= 0) {
if (dizz > y) dizz = y;
vx = (x * x + y * (y - dizz)) / t;
} else {
if (dizz < -y) dizz = -y;
vx = (x * x + y * (y + dizz)) / t;
}
vy = (dizz * x) / t;
}
filter->dx = vx * 65536;
filter->dy = vy * 65536;
filter->sx = (-vx * x + vy * y + x + cos (filter->phase * 5) * 2) * 65536;
filter->sy = (-vx * y - vy * x + y + sin (filter->phase * 6) * 2) * 65536;
filter->phase += filter->phase_increment;
if (filter->phase > 5700000) filter->phase = 0;
}
static void
gst_vertigotv_chain (GstPad * pad, GstData *_data)
{
GstBuffer *buf = GST_BUFFER (_data);
GstVertigoTV *filter;
guint32 *src, *dest;
GstBuffer *outbuf;
guint32 *p;
guint32 v;
gint x, y;
gint ox, oy;
gint i;
gint width, height, area;
filter = GST_VERTIGOTV (gst_pad_get_parent (pad));
src = (guint32 *) GST_BUFFER_DATA (buf);
width = filter->width;
height = filter->height;
area = width * height;
outbuf = gst_buffer_new ();
GST_BUFFER_SIZE (outbuf) = area * sizeof(guint32);
dest = (guint32 *) GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
gst_vertigotv_set_parms (filter);
p = filter->alt_buffer;
for (y = height; y > 0; y--) {
ox = filter->sx;
oy = filter->sy;
for (x = width; x > 0; x--) {
i = (oy >> 16) * width + (ox >> 16);
if (i < 0) i = 0;
if (i >= area) i = area;
v = filter->current_buffer[i] & 0xfcfcff;
v = (v * 3) + ((*src++) & 0xfcfcff);
*p++ = (v >> 2);
ox += filter->dx;
oy += filter->dy;
}
filter->sx -= filter->dy;
filter->sy += filter->dx;
}
memcpy(dest, filter->alt_buffer, area * sizeof(guint32));
gst_buffer_unref (buf);
gst_pad_push (filter->srcpad, GST_DATA (outbuf));
p = filter->current_buffer;
filter->current_buffer = filter->alt_buffer;
filter->alt_buffer = p;
}
static void
gst_vertigotv_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstVertigoTV *filter;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_VERTIGOTV (object));
filter = GST_VERTIGOTV (object);
switch (prop_id) {
case ARG_SPEED:
filter->phase_increment = g_value_get_float (value);
break;
case ARG_ZOOM_SPEED:
filter->zoomrate = g_value_get_float (value);
break;
default:
break;
}
}
static void
gst_vertigotv_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
{
GstVertigoTV *filter;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_VERTIGOTV (object));
filter = GST_VERTIGOTV (object);
switch (prop_id) {
case ARG_SPEED:
g_value_set_float (value, filter->phase_increment);
break;
case ARG_ZOOM_SPEED:
g_value_set_float (value, filter->zoomrate);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}