mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-24 09:10:36 +00:00
92 lines
2.9 KiB
C++
92 lines
2.9 KiB
C++
/* GStreamer pitch controller element
|
|
* Copyright (C) 2006 Wouter Paesen <wouter@blue-gate.be>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
#ifndef __GST_PITCH_H__
|
|
#define __GST_PITCH_H__
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/audio/audio.h>
|
|
|
|
G_BEGIN_DECLS
|
|
#define GST_TYPE_PITCH \
|
|
(gst_pitch_get_type())
|
|
#define GST_PITCH(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PITCH,GstPitch))
|
|
#define GST_PITCH_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PITCH,GstPitchClass))
|
|
#define GST_IS_PITCH(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PITCH))
|
|
#define GST_IS_PITCH_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PITCH))
|
|
typedef struct _GstPitch GstPitch;
|
|
typedef struct _GstPitchClass GstPitchClass;
|
|
typedef struct _GstPitchPrivate GstPitchPrivate;
|
|
|
|
|
|
struct _GstPitch
|
|
{
|
|
GstElement element;
|
|
|
|
GstPad *srcpad;
|
|
GstPad *sinkpad;
|
|
|
|
/* parameter values */
|
|
gfloat tempo; /* time stretch
|
|
* change the duration, without affecting the pitch
|
|
* > 1 makes the stream shorter
|
|
*/
|
|
|
|
gfloat rate; /* change playback rate
|
|
* resample
|
|
* > 1 makes the stream shorter
|
|
*/
|
|
|
|
gfloat output_rate; /* change output segment rate
|
|
* Affects playback when input
|
|
* segments have rate != output_rate
|
|
*/
|
|
|
|
gfloat pitch; /* change pitch
|
|
* change the pitch without affecting the
|
|
* duration, stream length doesn't change
|
|
*/
|
|
|
|
/* values extracted from caps */
|
|
GstAudioInfo info;
|
|
|
|
/* stream tracking */
|
|
gfloat segment_applied_rate; /* Rate applied from input segment */
|
|
GstClockTime next_buffer_time;
|
|
guint64 next_buffer_offset;
|
|
|
|
GstClockTimeDiff min_latency, max_latency;
|
|
|
|
GstPitchPrivate *priv;
|
|
};
|
|
|
|
struct _GstPitchClass
|
|
{
|
|
GstElementClass parent_class;
|
|
};
|
|
|
|
GType gst_pitch_get_type (void);
|
|
GST_ELEMENT_REGISTER_DECLARE (pitch);
|
|
|
|
G_END_DECLS
|
|
#endif /* __GST_PITCH_H__ */
|