mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-19 14:56:36 +00:00
106 lines
4.2 KiB
C
106 lines
4.2 KiB
C
/* GStreamer
|
|
* Copyright (C) <2011> Stefan Kost <ensonic@users.sf.net>
|
|
* Copyright (C) <2015> Luis de Bethencourt <luis@debethencourt.com>
|
|
*
|
|
* gstaudiovisualizer.c: base class for audio visualisation elements
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef __GST_AUDIO_VISUALIZER_H__
|
|
#define __GST_AUDIO_VISUALIZER_H__
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/base/gstbasetransform.h>
|
|
|
|
#include <gst/video/video.h>
|
|
#include <gst/audio/audio.h>
|
|
#include <gst/base/gstadapter.h>
|
|
|
|
G_BEGIN_DECLS
|
|
#define GST_TYPE_AUDIO_VISUALIZER (libvisual_gst_audio_visualizer_get_type())
|
|
#define GST_AUDIO_VISUALIZER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_VISUALIZER,GstAudioVisualizer))
|
|
#define GST_AUDIO_VISUALIZER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_VISUALIZER,GstAudioVisualizerClass))
|
|
#define GST_AUDIO_VISUALIZER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_AUDIO_VISUALIZER,GstAudioVisualizerClass))
|
|
#define GST_IS_SYNAESTHESIA(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_VISUALIZER))
|
|
#define GST_IS_SYNAESTHESIA_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_VISUALIZER))
|
|
typedef struct _GstAudioVisualizer GstAudioVisualizer;
|
|
typedef struct _GstAudioVisualizerClass GstAudioVisualizerClass;
|
|
typedef struct _GstAudioVisualizerPrivate GstAudioVisualizerPrivate;
|
|
|
|
typedef void (*GstAudioVisualizerShaderFunc)(GstAudioVisualizer *scope, const GstVideoFrame *s, GstVideoFrame *d);
|
|
|
|
/**
|
|
* GstAudioVisualizerShader:
|
|
* @GST_AUDIO_VISUALIZER_SHADER_NONE: no shading
|
|
* @GST_AUDIO_VISUALIZER_SHADER_FADE: plain fading
|
|
* @GST_AUDIO_VISUALIZER_SHADER_FADE_AND_MOVE_UP: fade and move up
|
|
* @GST_AUDIO_VISUALIZER_SHADER_FADE_AND_MOVE_DOWN: fade and move down
|
|
* @GST_AUDIO_VISUALIZER_SHADER_FADE_AND_MOVE_LEFT: fade and move left
|
|
* @GST_AUDIO_VISUALIZER_SHADER_FADE_AND_MOVE_RIGHT: fade and move right
|
|
* @GST_AUDIO_VISUALIZER_SHADER_FADE_AND_MOVE_HORIZ_OUT: fade and move horizontally out
|
|
* @GST_AUDIO_VISUALIZER_SHADER_FADE_AND_MOVE_HORIZ_IN: fade and move horizontally in
|
|
* @GST_AUDIO_VISUALIZER_SHADER_FADE_AND_MOVE_VERT_OUT: fade and move vertically out
|
|
* @GST_AUDIO_VISUALIZER_SHADER_FADE_AND_MOVE_VERT_IN: fade and move vertically in
|
|
*
|
|
* Different types of supported background shading functions.
|
|
*/
|
|
typedef enum {
|
|
GST_AUDIO_VISUALIZER_SHADER_NONE,
|
|
GST_AUDIO_VISUALIZER_SHADER_FADE,
|
|
GST_AUDIO_VISUALIZER_SHADER_FADE_AND_MOVE_UP,
|
|
GST_AUDIO_VISUALIZER_SHADER_FADE_AND_MOVE_DOWN,
|
|
GST_AUDIO_VISUALIZER_SHADER_FADE_AND_MOVE_LEFT,
|
|
GST_AUDIO_VISUALIZER_SHADER_FADE_AND_MOVE_RIGHT,
|
|
GST_AUDIO_VISUALIZER_SHADER_FADE_AND_MOVE_HORIZ_OUT,
|
|
GST_AUDIO_VISUALIZER_SHADER_FADE_AND_MOVE_HORIZ_IN,
|
|
GST_AUDIO_VISUALIZER_SHADER_FADE_AND_MOVE_VERT_OUT,
|
|
GST_AUDIO_VISUALIZER_SHADER_FADE_AND_MOVE_VERT_IN
|
|
} GstAudioVisualizerShader;
|
|
|
|
struct _GstAudioVisualizer
|
|
{
|
|
GstElement parent;
|
|
|
|
guint req_spf; /* min samples per frame wanted by the subclass */
|
|
|
|
/* video state */
|
|
GstVideoInfo vinfo;
|
|
|
|
/* audio state */
|
|
GstAudioInfo ainfo;
|
|
|
|
/* <private> */
|
|
GstAudioVisualizerPrivate *priv;
|
|
};
|
|
|
|
struct _GstAudioVisualizerClass
|
|
{
|
|
GstElementClass parent_class;
|
|
|
|
/* virtual function, called whenever the format changes */
|
|
gboolean (*setup) (GstAudioVisualizer * scope);
|
|
|
|
/* virtual function for rendering a frame */
|
|
gboolean (*render) (GstAudioVisualizer * scope, GstBuffer * audio, GstVideoFrame * video);
|
|
|
|
gboolean (*decide_allocation) (GstAudioVisualizer * scope, GstQuery *query);
|
|
};
|
|
|
|
GType libvisual_gst_audio_visualizer_get_type (void);
|
|
|
|
G_END_DECLS
|
|
#endif /* __GST_AUDIO_VISUALIZER_H__ */
|