edfc81352e
color is totally transparent. Thanks Torben! git-svn-id: svn://localhost/ardour2/trunk@1656 d708f5d6-7413-0410-9779-e7cbd77b26cf
133 lines
4.4 KiB
C
133 lines
4.4 KiB
C
/* libgnomecanvas/gnome-canvas-waveview.h: GnomeCanvas item for displaying wave data
|
|
*
|
|
* Copyright (C) 2001 Paul Davis <pbd@op.net>
|
|
*
|
|
* 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., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*
|
|
*/
|
|
|
|
#ifndef __GNOME_CANVAS_WAVEVIEW_H__
|
|
#define __GNOME_CANVAS_WAVEVIEW_H__
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <libgnomecanvas/libgnomecanvas.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
/* Wave viewer item for canvas.
|
|
*/
|
|
|
|
#define GNOME_TYPE_CANVAS_WAVEVIEW (gnome_canvas_waveview_get_type ())
|
|
#define GNOME_CANVAS_WAVEVIEW(obj) (GTK_CHECK_CAST ((obj), GNOME_TYPE_CANVAS_WAVEVIEW, GnomeCanvasWaveView))
|
|
#define GNOME_CANVAS_WAVEVIEW_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GNOME_TYPE_CANVAS_WAVEVIEW, GnomeCanvasWaveViewClass))
|
|
#define GNOME_IS_CANVAS_WAVEVIEW(obj) (GTK_CHECK_TYPE ((obj), GNOME_TYPE_CANVAS_WAVEVIEW))
|
|
#define GNOME_IS_CANVAS_WAVEVIEW_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GNOME_TYPE_CANVAS_WAVEVIEW))
|
|
#define GNOME_CANVAS_WAVEVIEW_GET_CLASS(obj) (GTK_CHECK_GET_CLASS ((obj), GNOME_TYPE_CANVAS_WAVEVIEW, GnomeCanvasWaveViewClass))
|
|
|
|
typedef struct _GnomeCanvasWaveView GnomeCanvasWaveView;
|
|
typedef struct _GnomeCanvasWaveViewClass GnomeCanvasWaveViewClass;
|
|
typedef struct _GnomeCanvasWaveViewChannelInfo GnomeCanvasWaveViewChannelInfo;
|
|
typedef struct _GnomeCanvasWaveViewCacheEntry GnomeCanvasWaveViewCacheEntry;
|
|
typedef struct _GnomeCanvasWaveViewCache GnomeCanvasWaveViewCache;
|
|
|
|
/* XXX this needs to be synced with ardour/source.h PeakData */
|
|
|
|
struct _GnomeCanvasWaveViewCacheEntry
|
|
{
|
|
float min;
|
|
float max;
|
|
};
|
|
|
|
struct _GnomeCanvasWaveViewCache
|
|
{
|
|
GnomeCanvasWaveViewCacheEntry* data;
|
|
gint32 allocated;
|
|
gint32 data_size;
|
|
gulong start;
|
|
gulong end;
|
|
};
|
|
|
|
GnomeCanvasWaveViewCache* gnome_canvas_waveview_cache_new ();
|
|
void gnome_canvas_waveview_cache_destroy (GnomeCanvasWaveViewCache*);
|
|
|
|
struct _GnomeCanvasWaveView
|
|
{
|
|
GnomeCanvasItem item;
|
|
|
|
GnomeCanvasWaveViewCache *cache;
|
|
gboolean cache_updater;
|
|
gint screen_width;
|
|
|
|
void *data_src;
|
|
guint32 channel;
|
|
void (*peak_function)(void*,gulong,gulong,gulong,gpointer,guint32,double);
|
|
gulong (*length_function)(void *);
|
|
gulong (*sourcefile_length_function)(void*,double);
|
|
void (*gain_curve_function)(void *arg, double start, double end, float* vector, guint32 veclen);
|
|
void *gain_src;
|
|
|
|
/** x-axis: samples per canvas unit. */
|
|
double samples_per_unit;
|
|
|
|
/** y-axis: amplitude_above_axis.
|
|
*
|
|
* the default is that an (scaled, normalized -1.0 ... +1.0) amplitude of 1.0
|
|
* corresponds to the top of the area assigned to the waveview.
|
|
*
|
|
* larger values will expand the vertical scale, cutting off the peaks/troughs.
|
|
* smaller values will decrease the vertical scale, moving peaks/troughs toward
|
|
* the middle of the area assigned to the waveview.
|
|
*/
|
|
double amplitude_above_axis;
|
|
|
|
double x;
|
|
double y;
|
|
double height;
|
|
double half_height;
|
|
uint32_t wave_color;
|
|
uint32_t clip_color;
|
|
uint32_t zero_color;
|
|
|
|
char rectified;
|
|
char logscaled;
|
|
|
|
/* These are updated by the update() routine
|
|
to optimize the render() routine, which may
|
|
be called several times after a single update().
|
|
*/
|
|
|
|
int32_t bbox_ulx;
|
|
int32_t bbox_uly;
|
|
int32_t bbox_lrx;
|
|
int32_t bbox_lry;
|
|
unsigned char wave_r, wave_g, wave_b, wave_a;
|
|
unsigned char clip_r, clip_g, clip_b, clip_a;
|
|
uint32_t samples;
|
|
uint32_t region_start;
|
|
int32_t reload_cache_in_render;
|
|
};
|
|
|
|
struct _GnomeCanvasWaveViewClass {
|
|
GnomeCanvasItemClass parent_class;
|
|
};
|
|
|
|
GType gnome_canvas_waveview_get_type (void) G_GNUC_CONST;
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GNOME_CANVAS_WAVEVIEW_H__ */
|