#include <boost/shared_ptr.hpp>
#include <boost/shared_array.hpp>
+#include <boost/scoped_array.hpp>
#include "pbd/properties.h"
#include <glibmm/refptr.h>
+#include "canvas/visibility.h"
#include "canvas/item.h"
#include "canvas/fill.h"
#include "canvas/outline.h"
namespace ArdourCanvas {
-class WaveView : virtual public Item, public Outline, public Fill
+class LIBCANVAS_API WaveView : public Item
{
public:
+
enum Shape {
Normal,
- Rectified,
+ Rectified
};
- WaveView (Group *, boost::shared_ptr<ARDOUR::AudioRegion>);
+ struct CacheEntry {
+ int channel;
+ Coord height;
+ float amplitude;
+ Color fill_color;
+ framepos_t start;
+ framepos_t end;
+ Cairo::RefPtr<Cairo::ImageSurface> image;
+
+ CacheEntry(int chan, Coord hght, float amp, Color fcl, framepos_t strt, framepos_t ed, Cairo::RefPtr<Cairo::ImageSurface> img) :
+
+ channel (chan), height (hght), amplitude (amp), fill_color (fcl),
+ start (strt), end (ed), image (img) {}
+ };
+
+ /* final ImageSurface rendered with colours */
+ Cairo::RefPtr<Cairo::ImageSurface> _image;
+
+ /* Displays a single channel of waveform data for the given Region.
+
+ x = 0 in the waveview corresponds to the first waveform datum taken
+ from region->start() samples into the source data.
+
+ x = N in the waveview corresponds to the (N * spp)'th sample
+ measured from region->start() into the source data.
+
+ when drawing, we will map the zeroth-pixel of the waveview
+ into a window.
+
+ The waveview itself contains a set of pre-rendered Cairo::ImageSurfaces
+ that cache sections of the display. This is filled on-demand and
+ never cleared until something explicitly marks the cache invalid
+ (such as a change in samples_per_pixel, the log scaling, rectified or
+ other view parameters).
+ */
+
+
+ WaveView (Canvas *, boost::shared_ptr<ARDOUR::AudioRegion>);
+ WaveView (Item*, boost::shared_ptr<ARDOUR::AudioRegion>);
+ ~WaveView ();
void render (Rect const & area, Cairo::RefPtr<Cairo::Context>) const;
void compute_bounding_box () const;
void set_outline_color (Color);
void region_resized ();
+ void gain_changed ();
void set_show_zero_line (bool);
bool show_zero_line() const { return _show_zero; }
void set_zero_color (Color);
void set_clip_color (Color);
- void set_amplitude (double);
void set_logscaled (bool);
void set_gradient_depth (double);
double gradient_depth() const { return _gradient_depth; }
void set_shape (Shape);
- double amplitude() const { return _amplitude; }
-
+
/* currently missing because we don't need them (yet):
set_shape_independent();
set_logscaled_independent()
static void set_global_gradient_depth (double);
static void set_global_logscaled (bool);
static void set_global_shape (Shape);
+ static void set_global_show_waveform_clipping (bool);
static double global_gradient_depth() { return _global_gradient_depth; }
static bool global_logscaled() { return _global_logscaled; }
static Shape global_shape() { return _global_shape; }
+ void set_amplitude_above_axis (double v);
+ double amplitude_above_axis () const { return _amplitude_above_axis; }
+
+ static void set_clip_level (double dB);
+ static PBD::Signal0<void> ClipLevelChanged;
+
#ifdef CANVAS_COMPATIBILITY
void*& property_gain_src () {
return _foo_void;
void*& property_gain_function () {
return _foo_void;
}
- double& property_amplitude_above_axis () {
- return _foo_double;
- }
private:
void* _foo_void;
- bool _foo_bool;
- int _foo_int;
- Color _foo_uint;
- double _foo_double;
-#endif
-
- class CacheEntry
- {
- public:
- CacheEntry (WaveView const *, int, int);
- ~CacheEntry ();
-
- int start () const {
- return _start;
- }
-
- int end () const {
- return _end;
- }
-
- boost::shared_array<ARDOUR::PeakData> peaks () const {
- return _peaks;
- }
-
- Cairo::RefPtr<Cairo::ImageSurface> image();
- void clear_image ();
- private:
- Coord position (Coord) const;
-
- WaveView const * _wave_view;
- int _start;
- int _end;
- int _n_peaks;
- boost::shared_array<ARDOUR::PeakData> _peaks;
- Cairo::RefPtr<Cairo::ImageSurface> _image;
- };
+#endif
- friend class CacheEntry;
- friend class ::WaveViewTest;
+ friend class ::WaveViewTest;
- void invalidate_whole_cache ();
+ static std::map <boost::shared_ptr<ARDOUR::AudioSource>, std::vector <CacheEntry> > _image_cache;
+ void consolidate_image_cache () const;
void invalidate_image_cache ();
boost::shared_ptr<ARDOUR::AudioRegion> _region;
int _channel;
double _samples_per_pixel;
Coord _height;
- Color _wave_color;
bool _show_zero;
Color _zero_color;
Color _clip_color;
bool _logscaled;
Shape _shape;
double _gradient_depth;
- double _amplitude;
bool _shape_independent;
bool _logscaled_independent;
bool _gradient_depth_independent;
+ double _amplitude_above_axis;
+ float _region_amplitude;
/** The `start' value to use for the region; we can't use the region's
* value as the crossfade editor needs to alter it.
*/
ARDOUR::frameoffset_t _region_start;
-
- mutable std::list<CacheEntry*> _cache;
-
- PBD::ScopedConnection invalidation_connection;
+
+ PBD::ScopedConnectionList invalidation_connection;
static double _global_gradient_depth;
static bool _global_logscaled;
static Shape _global_shape;
+ static bool _global_show_waveform_clipping;
+ static double _clip_level;
static PBD::Signal0<void> VisualPropertiesChanged;
void handle_visual_property_change ();
+ void handle_clip_level_change ();
+
+ void get_image (Cairo::RefPtr<Cairo::ImageSurface>& image, framepos_t start, framepos_t end, double& image_offset) const;
+
+ ArdourCanvas::Coord y_extent (double, bool) const;
+ void draw_image (Cairo::RefPtr<Cairo::ImageSurface>&, ARDOUR::PeakData*, int) const;
};
}
projects / ardour.git / blobdiff