gstreamer/gst/audiovisualizers/gstaudiovisualizer.h
Stefan Sauer 4132d222cb audiovisualizer: sync to change in base and port
Add support for GstVideoMeta and GstVideoFrame. Remove some redundant fields
that are also in GstVideoInfo. Don't disable the shader code, it does not
look broken.
2012-08-17 22:57:10 +02:00

121 lines
4.3 KiB
C

/* GStreamer
* Copyright (C) <2011> Stefan Kost <ensonic@users.sf.net>
*
* gstaudiovisualizer.c: base class for audio visualisation elements
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 (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_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 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;
/* pads */
GstPad *srcpad, *sinkpad;
GstBufferPool *pool;
GstAdapter *adapter;
GstBuffer *inbuf;
GstBuffer *tempbuf;
GstVideoFrame tempframe;
GstAudioVisualizerShader shader_type;
GstAudioVisualizerShaderFunc shader;
guint32 shade_amount;
guint spf; /* samples per video frame */
guint req_spf; /* min samples per frame wanted by the subclass */
/* video state */
GstVideoInfo vinfo;
guint64 frame_duration;
/* audio state */
GstAudioInfo ainfo;
/* configuration mutex */
GMutex config_lock;
/* QoS stuff *//* with LOCK */
gdouble proportion;
GstClockTime earliest_time;
GstSegment segment;
};
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);
};
GType gst_audio_visualizer_get_type (void);
G_END_DECLS
#endif /* __GST_AUDIO_VISUALIZER_H__ */