gstreamer/gst/median/gstmedian.c
Stefan Kost 27f2c9b255 Define GstElementDetails as const and also static (when defined as global)
Original commit message from CVS:
* ext/aalib/gstaasink.c:
* ext/annodex/gstcmmldec.c:
* ext/annodex/gstcmmlenc.c:
* ext/cairo/gsttextoverlay.c:
* ext/cairo/gsttimeoverlay.c:
* ext/cdio/gstcdiocddasrc.c:
* ext/dv/gstdvdec.c:
* ext/dv/gstdvdemux.c:
* ext/esd/esdmon.c:
* ext/esd/esdsink.c:
* ext/flac/gstflacenc.c:
* ext/flac/gstflactag.c:
* ext/gconf/gstgconfaudiosink.c: (gst_gconf_audio_sink_base_init):
* ext/gconf/gstgconfaudiosrc.c: (gst_gconf_audio_src_base_init):
* ext/gconf/gstgconfvideosink.c: (gst_gconf_video_sink_base_init):
* ext/gconf/gstgconfvideosrc.c: (gst_gconf_video_src_base_init):
* ext/gdk_pixbuf/pixbufscale.c:
* ext/hal/gsthalaudiosink.c: (gst_hal_audio_sink_base_init):
* ext/hal/gsthalaudiosrc.c: (gst_hal_audio_src_base_init):
* ext/jpeg/gstjpegdec.c:
* ext/jpeg/gstjpegenc.c:
* ext/jpeg/gstsmokedec.c:
* ext/jpeg/gstsmokeenc.c:
* ext/libcaca/gstcacasink.c:
* ext/libmng/gstmngdec.c:
* ext/libmng/gstmngenc.c:
* ext/libpng/gstpngdec.c:
* ext/libpng/gstpngenc.c:
* ext/mikmod/gstmikmod.c:
* ext/raw1394/gstdv1394src.c:
* ext/shout2/gstshout2.c: (gst_shout2send_init):
* ext/shout2/gstshout2.h:
* ext/speex/gstspeexdec.c:
* ext/speex/gstspeexenc.c:
* gst/alpha/gstalpha.c:
* gst/alpha/gstalphacolor.c:
* gst/apetag/gstapedemux.c:
* gst/auparse/gstauparse.c:
* gst/autodetect/gstautoaudiosink.c:
(gst_auto_audio_sink_base_init):
* gst/autodetect/gstautovideosink.c:
(gst_auto_video_sink_base_init):
* gst/avi/gstavidemux.c: (gst_avi_demux_base_init):
* gst/avi/gstavimux.c: (gst_avimux_base_init):
* gst/cutter/gstcutter.c:
* gst/debug/breakmydata.c:
* gst/debug/efence.c:
* gst/debug/gstnavigationtest.c:
* gst/debug/gstnavseek.c:
* gst/debug/negotiation.c:
* gst/debug/progressreport.c:
* gst/debug/testplugin.c:
* gst/effectv/gstaging.c:
* gst/effectv/gstdice.c:
* gst/effectv/gstedge.c:
* gst/effectv/gstquark.c:
* gst/effectv/gstrev.c:
* gst/effectv/gstshagadelic.c:
* gst/effectv/gstvertigo.c:
* gst/effectv/gstwarp.c:
* gst/flx/gstflxdec.c:
* gst/goom/gstgoom.c:
* gst/icydemux/gsticydemux.c:
* gst/id3demux/gstid3demux.c:
* gst/interleave/deinterleave.c:
* gst/interleave/interleave.c:
* gst/law/alaw-decode.c: (gst_alawdec_base_init):
* gst/law/alaw-encode.c: (gst_alawenc_base_init):
* gst/law/mulaw-decode.c: (gst_mulawdec_base_init):
* gst/law/mulaw-encode.c: (gst_mulawenc_base_init):
* gst/level/gstlevel.c:
* gst/matroska/matroska-demux.c: (gst_matroska_demux_base_init):
* gst/matroska/matroska-mux.c: (gst_matroska_mux_base_init):
* gst/median/gstmedian.c:
* gst/monoscope/gstmonoscope.c:
* gst/multipart/multipartdemux.c:
* gst/multipart/multipartmux.c:
* gst/oldcore/gstaggregator.c:
* gst/oldcore/gstfdsink.c:
* gst/oldcore/gstmd5sink.c:
* gst/oldcore/gstmultifilesrc.c:
* gst/oldcore/gstpipefilter.c:
* gst/oldcore/gstshaper.c:
* gst/oldcore/gststatistics.c:
* gst/rtp/gstasteriskh263.c:
* gst/rtp/gstrtpL16depay.c:
* gst/rtp/gstrtpL16pay.c:
* gst/rtp/gstrtpamrdepay.c:
* gst/rtp/gstrtpamrpay.c:
* gst/rtp/gstrtpdepay.c:
* gst/rtp/gstrtpgsmpay.c:
* gst/rtp/gstrtph263pay.c:
* gst/rtp/gstrtph263pdepay.c:
* gst/rtp/gstrtph263ppay.c:
* gst/rtp/gstrtpilbcdepay.c:
* gst/rtp/gstrtpmp4gpay.c:
* gst/rtp/gstrtpmp4vdepay.c:
* gst/rtp/gstrtpmp4vpay.c:
* gst/rtp/gstrtpmpadepay.c:
* gst/rtp/gstrtpmpapay.c:
* gst/rtp/gstrtppcmadepay.c:
* gst/rtp/gstrtppcmapay.c:
* gst/rtp/gstrtppcmudepay.c:
* gst/rtp/gstrtppcmupay.c:
* gst/rtp/gstrtpspeexdepay.c:
* gst/rtp/gstrtpspeexpay.c:
* gst/rtsp/gstrtpdec.c:
* gst/rtsp/gstrtspsrc.c:
* gst/smpte/gstsmpte.c:
* gst/udp/gstdynudpsink.c:
* gst/udp/gstmultiudpsink.c:
* gst/udp/gstudpsink.c:
* gst/udp/gstudpsrc.c:
* gst/videobox/gstvideobox.c:
* gst/videofilter/gstgamma.c: (gst_gamma_base_init):
* gst/videofilter/gstvideobalance.c:
* gst/videofilter/gstvideoflip.c:
* gst/videofilter/gstvideotemplate.c:
(gst_videotemplate_base_init):
* gst/videomixer/videomixer.c:
* gst/wavparse/gstwavparse.c: (gst_wavparse_base_init),
(gst_wavparse_class_init), (gst_wavparse_dispose),
(gst_wavparse_reset), (gst_wavparse_init),
(gst_wavparse_perform_seek), (gst_wavparse_peek_chunk_info),
(gst_wavparse_peek_chunk), (gst_wavparse_stream_headers),
(gst_wavparse_parse_stream_init), (gst_wavparse_send_event),
(gst_wavparse_add_src_pad), (gst_wavparse_stream_data),
(gst_wavparse_chain), (gst_wavparse_srcpad_event),
(gst_wavparse_sink_activate), (gst_wavparse_sink_activate_pull),
(gst_wavparse_change_state):
* gst/wavparse/gstwavparse.h:
* sys/oss/gstossmixerelement.c:
* sys/oss/gstosssink.c:
* sys/oss/gstosssrc.c:
* sys/osxaudio/gstosxaudioelement.c:
* sys/osxaudio/gstosxaudiosink.c:
* sys/osxaudio/gstosxaudiosrc.c:
* sys/sunaudio/gstsunaudiomixer.c:
* sys/sunaudio/gstsunaudiosink.c:
Define GstElementDetails as const and also static (when defined as
global)
2006-04-25 21:39:46 +00:00

434 lines
12 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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 <string.h>
#include "gstmedian.h"
#include <gst/video/video.h>
/* elementfactory information */
static const GstElementDetails median_details =
GST_ELEMENT_DETAILS ("Median effect",
"Filter/Effect/Video",
"Apply a median filter to an image",
"Wim Taymans <wim.taymans@chello.be>");
static GstStaticPadTemplate median_src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
);
static GstStaticPadTemplate median_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
);
/* Median signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_ACTIVE,
ARG_FILTERSIZE,
ARG_LUM_ONLY
};
static GType gst_median_get_type (void);
static void gst_median_class_init (GstMedianClass * klass);
static void gst_median_base_init (GstMedianClass * klass);
static void gst_median_init (GstMedian * median);
static void median_5 (unsigned char *src, unsigned char *dest, int height,
int width);
static void median_9 (unsigned char *src, unsigned char *dest, int height,
int width);
static void gst_median_chain (GstPad * pad, GstData * _data);
static void gst_median_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_median_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstElementClass *parent_class = NULL;
/*static guint gst_median_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_median_get_type (void)
{
static GType median_type = 0;
if (!median_type) {
static const GTypeInfo median_info = {
sizeof (GstMedianClass),
(GBaseInitFunc) gst_median_base_init,
NULL,
(GClassInitFunc) gst_median_class_init,
NULL,
NULL,
sizeof (GstMedian),
0,
(GInstanceInitFunc) gst_median_init,
};
median_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstMedian", &median_info, 0);
}
return median_type;
}
static void
gst_median_base_init (GstMedianClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&median_sink_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&median_src_factory));
gst_element_class_set_details (element_class, &median_details);
}
static void
gst_median_class_init (GstMedianClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_peek_parent (klass);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ACTIVE, g_param_spec_boolean ("active", "active", "active", TRUE, G_PARAM_READWRITE)); /* CHECKME */
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FILTERSIZE, g_param_spec_int ("filtersize", "filtersize", "filtersize", G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); /* CHECKME */
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LUM_ONLY, g_param_spec_boolean ("lum_only", "lum_only", "lum_only", TRUE, G_PARAM_READWRITE)); /* CHECKME */
gobject_class->set_property = gst_median_set_property;
gobject_class->get_property = gst_median_get_property;
}
static gboolean
gst_median_link (GstPad * pad, const GstCaps * caps)
{
GstMedian *filter = GST_MEDIAN (gst_pad_get_parent (pad));
GstPad *otherpad = (pad == filter->srcpad) ? filter->sinkpad : filter->srcpad;
GstStructure *structure = gst_caps_get_structure (caps, 0);
gint w, h;
GstPadLinkReturn ret;
gst_structure_get_int (structure, "width", &w);
gst_structure_get_int (structure, "height", &h);
ret = gst_pad_try_set_caps (otherpad, caps);
if (GST_PAD_LINK_SUCCESSFUL (ret)) {
filter->width = w;
filter->height = h;
}
gst_object_unref (filter);
return ret;
}
void
gst_median_init (GstMedian * median)
{
median->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&median_sink_factory), "sink");
gst_pad_set_getcaps_function (median->sinkpad, gst_pad_proxy_getcaps);
gst_pad_set_link_function (median->sinkpad, gst_median_link);
gst_pad_set_chain_function (median->sinkpad, gst_median_chain);
gst_element_add_pad (GST_ELEMENT (median), median->sinkpad);
median->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&median_src_factory), "src");
gst_pad_set_getcaps_function (median->srcpad, gst_pad_proxy_getcaps);
gst_pad_set_link_function (median->sinkpad, gst_median_link);
gst_element_add_pad (GST_ELEMENT (median), median->srcpad);
median->filtersize = 5;
median->lum_only = TRUE;
median->active = TRUE;
}
#define PIX_SORT(a,b) { if ((a)>(b)) PIX_SWAP((a),(b)); }
#define PIX_SWAP(a,b) { unsigned char temp=(a);(a)=(b);(b)=temp; }
static void
median_5 (unsigned char *src, unsigned char *dest, int width, int height)
{
int nLastRow;
int nLastCol;
unsigned char p[9];
int i, j, k;
nLastCol = width - 1;
nLastRow = height - 1;
/*copy the top and bottom rows into the result array */
for (i = 0; i < width; i++) {
dest[i] = src[i];
dest[nLastRow * width + i] = src[nLastRow * width + i];
}
dest[i] = src[i];
nLastCol--;
nLastRow--;
/* process the interior pixels */
i = width + 1;
for (k = 0; k < nLastRow; k++) {
for (j = 0; j < nLastCol; j++, i++) {
p[0] = src[i - width];
p[1] = src[i - 1];
p[2] = src[i];
p[3] = src[i + 1];
p[4] = src[i + width];
PIX_SORT (p[0], p[1]);
PIX_SORT (p[3], p[4]);
PIX_SORT (p[0], p[3]);
PIX_SORT (p[1], p[4]);
PIX_SORT (p[1], p[2]);
PIX_SORT (p[2], p[3]);
PIX_SORT (p[1], p[2]);
dest[i] = p[2];
}
dest[i] = src[i];
i++;
dest[i] = src[i];
i++;
}
dest[i] = src[i];
i++;
}
static void
median_9 (unsigned char *src, unsigned char *dest, int width, int height)
{
int nLastRow;
int nLastCol;
unsigned char p[9];
int i, j, k;
nLastCol = width - 1;
nLastRow = height - 1;
/*copy the top and bottom rows into the result array */
for (i = 0; i < width; i++) {
dest[i] = src[i];
dest[nLastRow * width + i] = src[nLastRow * width + i];
}
dest[i] = src[i];
nLastCol--;
nLastRow--;
/* process the interior pixels */
i = width + 1;
for (k = 0; k < nLastRow; k++) {
for (j = 0; j < nLastCol; j++, i++) {
p[0] = src[i - width - 1];
p[1] = src[i - width];
p[2] = src[i - width + 1];
p[3] = src[i - 1];
p[4] = src[i];
p[5] = src[i + 1];
p[6] = src[i + width - 1];
p[7] = src[i + width];
p[8] = src[i + width + 1];
PIX_SORT (p[1], p[2]);
PIX_SORT (p[4], p[5]);
PIX_SORT (p[7], p[8]);
PIX_SORT (p[0], p[1]);
PIX_SORT (p[3], p[4]);
PIX_SORT (p[6], p[7]);
PIX_SORT (p[1], p[2]);
PIX_SORT (p[4], p[5]);
PIX_SORT (p[7], p[8]);
PIX_SORT (p[0], p[3]);
PIX_SORT (p[5], p[8]);
PIX_SORT (p[4], p[7]);
PIX_SORT (p[3], p[6]);
PIX_SORT (p[1], p[4]);
PIX_SORT (p[2], p[5]);
PIX_SORT (p[4], p[7]);
PIX_SORT (p[4], p[2]);
PIX_SORT (p[6], p[4]);
PIX_SORT (p[4], p[2]);
dest[i] = p[4];
}
dest[i] = src[i];
i++;
dest[i] = src[i];
i++;
}
dest[i] = src[i];
i++;
}
static void
gst_median_chain (GstPad * pad, GstData * _data)
{
GstBuffer *buf = GST_BUFFER (_data);
GstMedian *median;
guchar *data;
gulong size;
GstBuffer *outbuf;
/* GstMeta *meta; */
int lumsize, chromsize;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
median = GST_MEDIAN (GST_OBJECT_PARENT (pad));
if (!median->active) {
gst_pad_push (median->srcpad, GST_DATA (buf));
return;
}
data = GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
GST_DEBUG ("median: have buffer of %d", GST_BUFFER_SIZE (buf));
outbuf = gst_buffer_new ();
GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (buf));
GST_BUFFER_SIZE (outbuf) = GST_BUFFER_SIZE (buf);
lumsize = median->width * median->height;
chromsize = lumsize / 4;
if (median->filtersize == 5) {
median_5 (data, GST_BUFFER_DATA (outbuf), median->width, median->height);
if (!median->lum_only) {
median_5 (data + lumsize, GST_BUFFER_DATA (outbuf) + lumsize,
median->width / 2, median->height / 2);
median_5 (data + lumsize + chromsize,
GST_BUFFER_DATA (outbuf) + lumsize + chromsize, median->width / 2,
median->height / 2);
} else {
memcpy (GST_BUFFER_DATA (outbuf) + lumsize, data + lumsize,
chromsize * 2);
}
} else {
median_9 (data, GST_BUFFER_DATA (outbuf), median->width, median->height);
if (!median->lum_only) {
median_9 (data + lumsize, GST_BUFFER_DATA (outbuf) + lumsize,
median->width / 2, median->height / 2);
median_9 (data + lumsize + chromsize,
GST_BUFFER_DATA (outbuf) + lumsize + chromsize, median->width / 2,
median->height / 2);
} else {
memcpy (GST_BUFFER_DATA (outbuf) + lumsize, data + lumsize,
chromsize * 2);
}
}
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
gst_buffer_unref (buf);
gst_pad_push (median->srcpad, GST_DATA (outbuf));
}
static void
gst_median_set_property (GObject * object, guint prop_id, const GValue * value,
GParamSpec * pspec)
{
GstMedian *median;
gint argvalue;
g_return_if_fail (GST_IS_MEDIAN (object));
median = GST_MEDIAN (object);
switch (prop_id) {
case ARG_FILTERSIZE:
argvalue = g_value_get_int (value);
if (argvalue != 5 && argvalue != 9) {
g_warning ("median: invalid filtersize (%d), must be 5 or 9\n",
argvalue);
} else {
median->filtersize = argvalue;
}
break;
case ARG_ACTIVE:
median->active = g_value_get_boolean (value);
break;
case ARG_LUM_ONLY:
median->lum_only = g_value_get_boolean (value);
break;
default:
break;
}
}
static void
gst_median_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstMedian *median;
g_return_if_fail (GST_IS_MEDIAN (object));
median = GST_MEDIAN (object);
switch (prop_id) {
case ARG_FILTERSIZE:
g_value_set_int (value, median->filtersize);
break;
case ARG_ACTIVE:
g_value_set_boolean (value, median->active);
break;
case ARG_LUM_ONLY:
g_value_set_boolean (value, median->lum_only);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "median",
GST_RANK_NONE, GST_TYPE_MEDIAN);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"median",
"Video median filter",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)