gstreamer/gst/spectrum/gstspectrum.h
Stefan Kost 2787798482 gst/spectrum/: port to use message to get results, cleanly exit when closing the window
Original commit message from CVS:
* gst/spectrum/demo-audiotest.c: (on_window_destroy),
(draw_spectrum), (message_handler), (main):
* gst/spectrum/demo-osssrc.c: (on_window_destroy), (draw_spectrum),
(message_handler), (main):
port to use message to get results, cleanly exit when closing the window
* gst/spectrum/gstspectrum.c: (gst_spectrum_class_init),
(gst_spectrum_init), (gst_spectrum_dispose),
(gst_spectrum_set_property), (gst_spectrum_get_property),
(gst_spectrum_set_caps), (gst_spectrum_start),
(gst_spectrum_message_new), (gst_spectrum_transform_ip):
* gst/spectrum/gstspectrum.h:
port to derive from basetransform and send results via messages
(like level element)
2006-06-16 09:49:07 +00:00

80 lines
2.4 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.
*/
#ifndef __GST_SPECTRUM_H__
#define __GST_SPECTRUM_H__
#include <gst/gst.h>
#include <gst/base/gstadapter.h>
#include <gst/base/gstbasetransform.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define GST_TYPE_SPECTRUM (gst_spectrum_get_type())
#define GST_SPECTRUM(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SPECTRUM,GstSpectrum))
#define GST_IS_SPECTRUM(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SPECTRUM))
#define GST_SPECTRUM_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_SPECTRUM,GstSpectrumClass))
#define GST_IS_SPECTRUM_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_SPECTRUM))
typedef struct _GstSpectrum GstSpectrum;
typedef struct _GstSpectrumClass GstSpectrumClass;
struct _GstSpectrum {
GstBaseTransform element;
GstPad *sinkpad,*srcpad;
GstAdapter *adapter;
/* properties */
gboolean message; /* whether or not to post messages */
gdouble interval; /* how many seconds between emits */
guint bands; /* number of spectrum bands */
gint threshold; /* energy level treshold */
gint num_frames; /* frame count (1 sample per channel)
* since last emit */
gint rate; /* caps variables */
gint width;
gint channels;
/* <private> */
gint base, len;
gint16 *re, *im, *loud;
guchar *spect;
};
struct _GstSpectrumClass {
GstBaseTransformClass parent_class;
};
GType gst_spectrum_get_type (void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_SPECTRUM_H__ */