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7f9bc84725
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
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_SPECTRUM_H__
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#define __GST_SPECTRUM_H__
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#include <gst/gst.h>
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#include <gst/base/gstadapter.h>
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#include <gst/base/gstbasetransform.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#define GST_TYPE_SPECTRUM (gst_spectrum_get_type())
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#define GST_SPECTRUM(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SPECTRUM,GstSpectrum))
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#define GST_IS_SPECTRUM(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SPECTRUM))
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#define GST_SPECTRUM_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_SPECTRUM,GstSpectrumClass))
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#define GST_IS_SPECTRUM_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_SPECTRUM))
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typedef struct _GstSpectrum GstSpectrum;
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typedef struct _GstSpectrumClass GstSpectrumClass;
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struct _GstSpectrum {
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GstBaseTransform element;
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GstPad *sinkpad,*srcpad;
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GstAdapter *adapter;
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/* properties */
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gboolean message; /* whether or not to post messages */
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gdouble interval; /* how many seconds between emits */
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guint bands; /* number of spectrum bands */
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gint threshold; /* energy level treshold */
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gint num_frames; /* frame count (1 sample per channel)
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* since last emit */
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gint rate; /* caps variables */
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gint width;
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gint channels;
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/* <private> */
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gint base, len;
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gint16 *re, *im, *loud;
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guchar *spect;
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};
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struct _GstSpectrumClass {
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GstBaseTransformClass parent_class;
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};
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GType gst_spectrum_get_type (void);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __GST_SPECTRUM_H__ */
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