#include <boost/bind.hpp>
#include <wx/graphics.h>
#include "audio_plot.h"
-#include "lib/decoder_factory.h"
#include "lib/audio_decoder.h"
#include "lib/audio_analysis.h"
#include "wx/wx_util.h"
int const AudioPlot::max_smoothing = 128;
AudioPlot::AudioPlot (wxWindow* parent)
- : wxPanel (parent)
- , _gain (0)
+ : wxPanel (parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE)
, _smoothing (max_smoothing / 2)
{
+#ifndef __WXOSX__
SetDoubleBuffered (true);
+#endif
- for (int i = 0; i < MAX_AUDIO_CHANNELS; ++i) {
+ for (int i = 0; i < MAX_DCP_AUDIO_CHANNELS; ++i) {
_channel_visible[i] = false;
}
_type_visible[i] = false;
}
- _colours.push_back (wxColour ( 0, 0, 0));
- _colours.push_back (wxColour (255, 0, 0));
- _colours.push_back (wxColour ( 0, 255, 0));
+ _colours.push_back (wxColour ( 0, 0, 0));
+ _colours.push_back (wxColour (255, 0, 0));
+ _colours.push_back (wxColour ( 0, 255, 0));
_colours.push_back (wxColour (139, 0, 204));
- _colours.push_back (wxColour ( 0, 0, 255));
- _colours.push_back (wxColour (100, 100, 100));
-
- Connect (wxID_ANY, wxEVT_PAINT, wxPaintEventHandler (AudioPlot::paint), 0, this);
-
+ _colours.push_back (wxColour ( 0, 0, 255));
+ _colours.push_back (wxColour ( 0, 139, 0));
+ _colours.push_back (wxColour ( 0, 0, 139));
+ _colours.push_back (wxColour (255, 255, 0));
+ _colours.push_back (wxColour ( 0, 255, 255));
+ _colours.push_back (wxColour (255, 0, 255));
+ _colours.push_back (wxColour (255, 0, 139));
+ _colours.push_back (wxColour (139, 0, 255));
+
+ set_analysis (shared_ptr<AudioAnalysis> ());
+
+#if MAX_DCP_AUDIO_CHANNELS != 12
+#warning AudioPlot::AudioPlot is expecting the wrong MAX_DCP_AUDIO_CHANNELS
+#endif
+
+ Bind (wxEVT_PAINT, boost::bind (&AudioPlot::paint, this));
+
SetMinSize (wxSize (640, 512));
}
{
_analysis = a;
- for (int i = 0; i < MAX_AUDIO_CHANNELS; ++i) {
- _channel_visible[i] = false;
+ if (!a) {
+ _message = _("Please wait; audio is being analysed...");
}
- for (int i = 0; i < AudioPoint::COUNT; ++i) {
- _type_visible[i] = false;
- }
-
Refresh ();
}
}
void
-AudioPlot::paint (wxPaintEvent &)
+AudioPlot::set_message (wxString s)
+{
+ _message = s;
+ Refresh ();
+}
+
+struct Metrics
+{
+ double db_label_width;
+ int height;
+ int y_origin;
+ float x_scale;
+ float y_scale;
+};
+
+void
+AudioPlot::paint ()
{
wxPaintDC dc (this);
if (!_analysis || _analysis->channels() == 0) {
gc->SetFont (gc->CreateFont (*wxNORMAL_FONT));
- gc->DrawText (_("Please wait; audio is being analysed..."), 32, 32);
+ gc->DrawText (_message, 32, 32);
return;
}
wxDouble db_label_height;
wxDouble db_label_descent;
wxDouble db_label_leading;
- gc->GetTextExtent ("-80dB", &_db_label_width, &db_label_height, &db_label_descent, &db_label_leading);
+ Metrics metrics;
+ gc->GetTextExtent (wxT ("-80dB"), &metrics.db_label_width, &db_label_height, &db_label_descent, &db_label_leading);
- _db_label_width += 8;
-
- int const data_width = GetSize().GetWidth() - _db_label_width;
+ metrics.db_label_width += 8;
+
+ int const data_width = GetSize().GetWidth() - metrics.db_label_width;
/* Assume all channels have the same number of points */
- _x_scale = data_width / float (_analysis->points (0));
- _height = GetSize().GetHeight ();
- _y_origin = 32;
- _y_scale = (_height - _y_origin) / -_minimum;
+ metrics.x_scale = data_width / float (_analysis->points (0));
+ metrics.height = GetSize().GetHeight ();
+ metrics.y_origin = 32;
+ metrics.y_scale = (metrics.height - metrics.y_origin) / -_minimum;
for (int i = _minimum; i <= 0; i += 10) {
- int const y = (_height - (i - _minimum) * _y_scale) - _y_origin;
- grid.MoveToPoint (_db_label_width - 4, y);
- grid.AddLineToPoint (_db_label_width + data_width, y);
+ int const y = (metrics.height - (i - _minimum) * metrics.y_scale) - metrics.y_origin;
+ grid.MoveToPoint (metrics.db_label_width - 4, y);
+ grid.AddLineToPoint (metrics.db_label_width + data_width, y);
gc->DrawText (std_to_wx (String::compose ("%1dB", i)), 0, y - (db_label_height / 2));
}
- gc->SetPen (*wxLIGHT_GREY_PEN);
+ gc->SetPen (wxPen (wxColour (200, 200, 200)));
gc->StrokePath (grid);
- gc->DrawText (_("Time"), data_width, _height - _y_origin + db_label_height / 2);
+ gc->DrawText (_("Time"), data_width, metrics.height - metrics.y_origin + db_label_height / 2);
-
if (_type_visible[AudioPoint::PEAK]) {
- for (int c = 0; c < MAX_AUDIO_CHANNELS; ++c) {
+ for (int c = 0; c < MAX_DCP_AUDIO_CHANNELS; ++c) {
wxGraphicsPath p = gc->CreatePath ();
if (_channel_visible[c] && c < _analysis->channels()) {
- plot_peak (p, c);
+ plot_peak (p, c, metrics);
}
wxColour const col = _colours[c];
-#if wxMAJOR_VERSION == 2 && wxMINOR_VERSION >= 9
- gc->SetPen (*wxThePenList->FindOrCreatePen (wxColour (col.Red(), col.Green(), col.Blue(), col.Alpha() / 2), 1, wxPENSTYLE_SOLID));
-#else
- gc->SetPen (*wxThePenList->FindOrCreatePen (wxColour (col.Red(), col.Green(), col.Blue(), col.Alpha() / 2), 1, wxSOLID));
-#endif
+ gc->SetPen (wxPen (wxColour (col.Red(), col.Green(), col.Blue(), col.Alpha() / 2), 1, wxPENSTYLE_SOLID));
gc->StrokePath (p);
}
}
if (_type_visible[AudioPoint::RMS]) {
- for (int c = 0; c < MAX_AUDIO_CHANNELS; ++c) {
+ for (int c = 0; c < MAX_DCP_AUDIO_CHANNELS; ++c) {
wxGraphicsPath p = gc->CreatePath ();
if (_channel_visible[c] && c < _analysis->channels()) {
- plot_rms (p, c);
+ plot_rms (p, c, metrics);
}
wxColour const col = _colours[c];
-#if wxMAJOR_VERSION == 2 && wxMINOR_VERSION >= 9
- gc->SetPen (*wxThePenList->FindOrCreatePen (col, 1, wxPENSTYLE_SOLID));
-#else
- gc->SetPen (*wxThePenList->FindOrCreatePen (col, 1, wxSOLID));
-#endif
+ gc->SetPen (wxPen (col, 1, wxPENSTYLE_SOLID));
gc->StrokePath (p);
}
}
wxGraphicsPath axes = gc->CreatePath ();
- axes.MoveToPoint (_db_label_width, 0);
- axes.AddLineToPoint (_db_label_width, _height - _y_origin);
- axes.AddLineToPoint (_db_label_width + data_width, _height - _y_origin);
- gc->SetPen (*wxBLACK_PEN);
+ axes.MoveToPoint (metrics.db_label_width, 0);
+ axes.AddLineToPoint (metrics.db_label_width, metrics.height - metrics.y_origin);
+ axes.AddLineToPoint (metrics.db_label_width + data_width, metrics.height - metrics.y_origin);
+ gc->SetPen (wxPen (wxColour (0, 0, 0)));
gc->StrokePath (axes);
delete gc;
}
float
-AudioPlot::y_for_linear (float p) const
+AudioPlot::y_for_linear (float p, Metrics const & metrics) const
{
- return _height - (20 * log10(p) - _minimum + _gain) * _y_scale - _y_origin;
+ if (p < 1e-4) {
+ p = 1e-4;
+ }
+
+ return metrics.height - (20 * log10(p) - _minimum) * metrics.y_scale - metrics.y_origin;
}
void
-AudioPlot::plot_peak (wxGraphicsPath& path, int channel) const
+AudioPlot::plot_peak (wxGraphicsPath& path, int channel, Metrics const & metrics) const
{
- path.MoveToPoint (_db_label_width, y_for_linear (_analysis->get_point(channel, 0)[AudioPoint::PEAK]));
+ if (_analysis->points (channel) == 0) {
+ return;
+ }
+
+ path.MoveToPoint (metrics.db_label_width, y_for_linear (_analysis->get_point(channel, 0)[AudioPoint::PEAK], metrics));
float peak = 0;
int const N = _analysis->points(channel);
} else if (peak < 0) {
peak = 0;
}
-
- path.AddLineToPoint (_db_label_width + i * _x_scale, y_for_linear (peak));
+
+ path.AddLineToPoint (metrics.db_label_width + i * metrics.x_scale, y_for_linear (peak, metrics));
}
}
void
-AudioPlot::plot_rms (wxGraphicsPath& path, int channel) const
+AudioPlot::plot_rms (wxGraphicsPath& path, int channel, Metrics const & metrics) const
{
- path.MoveToPoint (_db_label_width, y_for_linear (_analysis->get_point(channel, 0)[AudioPoint::RMS]));
+ if (_analysis->points (channel) == 0) {
+ return;
+ }
+
+ path.MoveToPoint (metrics.db_label_width, y_for_linear (_analysis->get_point(channel, 0)[AudioPoint::RMS], metrics));
list<float> smoothing;
int const before = _smoothing / 2;
int const after = _smoothing - before;
-
+
/* Pre-load the smoothing list */
for (int i = 0; i < before; ++i) {
smoothing.push_back (first);
smoothing.push_back (last);
}
}
-
+
for (int i = 0; i < N; ++i) {
int const next_for_window = i + after;
p += pow (*j, 2);
}
- p = sqrt (p / smoothing.size ());
+ if (!smoothing.empty ()) {
+ p = sqrt (p / smoothing.size ());
+ }
- path.AddLineToPoint (_db_label_width + i * _x_scale, y_for_linear (p));
+ path.AddLineToPoint (metrics.db_label_width + i * metrics.x_scale, y_for_linear (p, metrics));
}
}
-void
-AudioPlot::set_gain (float g)
-{
- _gain = g;
- Refresh ();
-}
-
void
AudioPlot::set_smoothing (int s)
{
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