mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-24 02:31:03 +00:00
2787798482
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)
80 lines
2.4 KiB
C
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__ */
|