1 /* GStreamer

     2  *

     3  * Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org>

     4  *

     5  * gstlfocontrolsource.h: Control source that provides some periodic waveforms

     6  *                        as control values.

     7  *

     8  * This library is free software; you can redistribute it and/or

     9  * modify it under the terms of the GNU Library General Public

    10  * License as published by the Free Software Foundation; either

    11  * version 2 of the License, or (at your option) any later version.

    12  *

    13  * This library is distributed in the hope that it will be useful,

    14  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    16  * Library General Public License for more details.

    17  *

    18  * You should have received a copy of the GNU Library General Public

    19  * License along with this library; if not, write to the

    20  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

    21  * Boston, MA 02111-1307, USA.

    22  */

    23 

    24 #ifndef __GST_LFO_CONTROL_SOURCE_H__

    25 #define __GST_LFO_CONTROL_SOURCE_H__

    26 

    27 #include <glib-object.h>

    28 #include <gst/gst.h>

    29 

    30 #include "gstcontrolsource.h"

    31 

    32 G_BEGIN_DECLS

    33 

    34 #define GST_TYPE_LFO_CONTROL_SOURCE \

    35   (gst_lfo_control_source_get_type ())

    36 #define GST_LFO_CONTROL_SOURCE(obj) \

    37   (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_LFO_CONTROL_SOURCE, GstLFOControlSource))

    38 #define GST_LFO_CONTROL_SOURCE_CLASS(vtable) \

    39   (G_TYPE_CHECK_CLASS_CAST ((vtable), GST_TYPE_LFO_CONTROL_SOURCE, GstLFOControlSourceClass))

    40 #define GST_IS_LFO_CONTROL_SOURCE(obj) \

    41   (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_LFO_CONTROL_SOURCE))

    42 #define GST_IS_LFO_CONTROL_SOURCE_CLASS(vtable) \

    43   (G_TYPE_CHECK_CLASS_TYPE ((vtable), GST_TYPE_LFO_CONTROL_SOURCE))

    44 #define GST_LFO_CONTROL_SOURCE_GET_CLASS(inst) \

    45   (G_TYPE_INSTANCE_GET_CLASS ((inst), GST_TYPE_LFO_CONTROL_SOURCE, GstLFOControlSourceClass))

    46 

    47 #define GST_TYPE_LFO_WAVEFORM (gst_lfo_waveform_get_type ())

    48 

    49 typedef struct _GstLFOControlSource GstLFOControlSource;

    50 typedef struct _GstLFOControlSourceClass GstLFOControlSourceClass;

    51 typedef struct _GstLFOControlSourcePrivate GstLFOControlSourcePrivate;

    52 

    53 /**

    54  * GstLFOWaveform:

    55  * @GST_LFO_WAVEFORM_SINE: sine waveform

    56  * @GST_LFO_WAVEFORM_SQUARE: square waveform

    57  * @GST_LFO_WAVEFORM_SAW: saw waveform

    58  * @GST_LFO_WAVEFORM_REVERSE_SAW: reverse saw waveform

    59  * @GST_LFO_WAVEFORM_TRIANGLE: triangle waveform

    60  *

    61  * The various waveform modes available.

    62  */

    63 typedef enum

    64 {

    65   GST_LFO_WAVEFORM_SINE,

    66   GST_LFO_WAVEFORM_SQUARE,

    67   GST_LFO_WAVEFORM_SAW,

    68   GST_LFO_WAVEFORM_REVERSE_SAW,

    69   GST_LFO_WAVEFORM_TRIANGLE

    70 } GstLFOWaveform;

    71 

    72 /**

    73  * GstLFOControlSource:

    74  *

    75  * The instance structure of #GstControlSource.

    76  */

    77 struct _GstLFOControlSource {

    78   GstControlSource parent;

    79 

    80   /* <private> */

    81   GstLFOControlSourcePrivate *priv;

    82   GMutex *lock;

    83   gpointer _gst_reserved[GST_PADDING];

    84 };

    85 

    86 struct _GstLFOControlSourceClass {

    87   GstControlSourceClass parent_class;

    88   

    89   /*< private >*/

    90   gpointer _gst_reserved[GST_PADDING];

    91 };

    92 #ifdef __SYMBIAN32__

    93 IMPORT_C

    94 #endif

    95 

    96 

    97 GType gst_lfo_control_source_get_type (void);

    98 #ifdef __SYMBIAN32__

    99 IMPORT_C

   100 #endif

   101 

   102 GType gst_lfo_waveform_get_type (void);

   103 

   104 /* Functions */

   105 #ifdef __SYMBIAN32__

   106 IMPORT_C

   107 #endif

   108 

   109 

   110 GstLFOControlSource *gst_lfo_control_source_new (void);

   111 

   112 G_END_DECLS

   113 

   114 #endif /* __GST_LFO_CONTROL_SOURCE_H__ */