#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"
using std::cout;
using std::vector;
+using std::list;
using std::max;
using std::min;
using boost::bind;
using boost::shared_ptr;
+int const AudioPlot::_minimum = -70;
+int const AudioPlot::max_smoothing = 128;
+
AudioPlot::AudioPlot (wxWindow* parent)
- : wxPanel (parent)
- , _channel (0)
+ : wxPanel (parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE)
+ , _gain (0)
+ , _smoothing (max_smoothing / 2)
+ , _message (_("Please wait; audio is being analysed..."))
{
- Connect (wxID_ANY, wxEVT_PAINT, wxPaintEventHandler (AudioPlot::paint), 0, this);
+#ifndef __WXOSX__
+ SetDoubleBuffered (true);
+#endif
+
+ for (int i = 0; i < MAX_AUDIO_CHANNELS; ++i) {
+ _channel_visible[i] = false;
+ }
+
+ for (int i = 0; i < AudioPoint::COUNT; ++i) {
+ _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 (139, 0, 204));
+ _colours.push_back (wxColour ( 0, 0, 255));
+ _colours.push_back (wxColour (100, 100, 100));
+
+ Bind (wxEVT_PAINT, boost::bind (&AudioPlot::paint, this));
+
SetMinSize (wxSize (640, 512));
}
AudioPlot::set_analysis (shared_ptr<AudioAnalysis> a)
{
_analysis = a;
- _channel = 0;
+
+ for (int i = 0; i < MAX_AUDIO_CHANNELS; ++i) {
+ _channel_visible[i] = false;
+ }
+
+ for (int i = 0; i < AudioPoint::COUNT; ++i) {
+ _type_visible[i] = false;
+ }
+
Refresh ();
}
void
-AudioPlot::set_channel (int c)
+AudioPlot::set_channel_visible (int c, bool v)
{
- _channel = c;
+ _channel_visible[c] = v;
Refresh ();
}
void
-AudioPlot::paint (wxPaintEvent &)
+AudioPlot::set_type_visible (int t, bool v)
+{
+ _type_visible[t] = v;
+ Refresh ();
+}
+
+void
+AudioPlot::set_message (wxString s)
+{
+ _message = s;
+ Refresh ();
+}
+
+void
+AudioPlot::paint ()
{
wxPaintDC dc (this);
- if (!_analysis) {
- return;
- }
-
wxGraphicsContext* gc = wxGraphicsContext::Create (dc);
if (!gc) {
return;
}
- int const width = GetSize().GetWidth();
- float const xs = width / float (_analysis->points (_channel));
- int const height = GetSize().GetHeight ();
- float const ys = height / 60;
+ if (!_analysis || _analysis->channels() == 0) {
+ gc->SetFont (gc->CreateFont (*wxNORMAL_FONT));
+ gc->DrawText (_message, 32, 32);
+ return;
+ }
wxGraphicsPath grid = gc->CreatePath ();
gc->SetFont (gc->CreateFont (*wxSMALL_FONT));
- for (int i = -60; i <= 0; i += 10) {
- int const y = height - (i + 60) * ys;
- grid.MoveToPoint (0, y);
- grid.AddLineToPoint (width, y);
- gc->DrawText (std_to_wx (String::compose ("%1dB", i)), width - 32, y - 12);
+ wxDouble db_label_height;
+ wxDouble db_label_descent;
+ wxDouble db_label_leading;
+ gc->GetTextExtent (wxT ("-80dB"), &_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;
+ /* 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;
+
+ 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);
+ gc->DrawText (std_to_wx (String::compose ("%1dB", i)), 0, y - (db_label_height / 2));
}
+
gc->SetPen (*wxLIGHT_GREY_PEN);
gc->StrokePath (grid);
- wxGraphicsPath path[AudioPoint::COUNT];
+ gc->DrawText (_("DCPTime"), data_width, _height - _y_origin + db_label_height / 2);
+
+ if (_type_visible[AudioPoint::PEAK]) {
+ for (int c = 0; c < MAX_AUDIO_CHANNELS; ++c) {
+ wxGraphicsPath p = gc->CreatePath ();
+ if (_channel_visible[c] && c < _analysis->channels()) {
+ plot_peak (p, c);
+ }
+ wxColour const col = _colours[c];
+ gc->SetPen (*wxThePenList->FindOrCreatePen (wxColour (col.Red(), col.Green(), col.Blue(), col.Alpha() / 2), 1, wxPENSTYLE_SOLID));
+ gc->StrokePath (p);
+ }
+ }
- for (int i = 0; i < AudioPoint::COUNT; ++i) {
- path[i] = gc->CreatePath ();
- path[i].MoveToPoint (0, height - (max (_analysis->get_point(_channel, 0)[i], -60.0f) + 60) * ys);
+ if (_type_visible[AudioPoint::RMS]) {
+ for (int c = 0; c < MAX_AUDIO_CHANNELS; ++c) {
+ wxGraphicsPath p = gc->CreatePath ();
+ if (_channel_visible[c] && c < _analysis->channels()) {
+ plot_rms (p, c);
+ }
+ wxColour const col = _colours[c];
+ gc->SetPen (*wxThePenList->FindOrCreatePen (col, 1, wxPENSTYLE_SOLID));
+ gc->StrokePath (p);
+ }
}
- for (int i = 0; i < _analysis->points(_channel); ++i) {
- for (int j = 0; j < AudioPoint::COUNT; ++j) {
- path[j].AddLineToPoint (i * xs, height - (max (_analysis->get_point(_channel, i)[j], -60.0f) + 60) * ys);
+ 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);
+ gc->StrokePath (axes);
+
+ delete gc;
+}
+
+float
+AudioPlot::y_for_linear (float p) const
+{
+ return _height - (20 * log10(p) - _minimum + _gain) * _y_scale - _y_origin;
+}
+
+void
+AudioPlot::plot_peak (wxGraphicsPath& path, int channel) const
+{
+ if (_analysis->points (channel) == 0) {
+ return;
+ }
+
+ path.MoveToPoint (_db_label_width, y_for_linear (_analysis->get_point(channel, 0)[AudioPoint::PEAK]));
+
+ float peak = 0;
+ int const N = _analysis->points(channel);
+ for (int i = 0; i < N; ++i) {
+ float const p = _analysis->get_point(channel, i)[AudioPoint::PEAK];
+ peak -= 0.01f * (1 - log10 (_smoothing) / log10 (max_smoothing));
+ if (p > peak) {
+ peak = p;
+ } else if (peak < 0) {
+ peak = 0;
}
+
+ path.AddLineToPoint (_db_label_width + i * _x_scale, y_for_linear (peak));
}
+}
- gc->SetPen (*wxBLUE_PEN);
- gc->StrokePath (path[AudioPoint::RMS]);
+void
+AudioPlot::plot_rms (wxGraphicsPath& path, int channel) const
+{
+ if (_analysis->points (channel) == 0) {
+ return;
+ }
+
+ path.MoveToPoint (_db_label_width, y_for_linear (_analysis->get_point(channel, 0)[AudioPoint::RMS]));
- gc->SetPen (*wxRED_PEN);
- gc->StrokePath (path[AudioPoint::PEAK]);
+ list<float> smoothing;
- delete gc;
+ int const N = _analysis->points(channel);
+
+ float const first = _analysis->get_point(channel, 0)[AudioPoint::RMS];
+ float const last = _analysis->get_point(channel, N - 1)[AudioPoint::RMS];
+
+ 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);
+ }
+ for (int i = 0; i < after; ++i) {
+ if (i < N) {
+ smoothing.push_back (_analysis->get_point(channel, i)[AudioPoint::RMS]);
+ } else {
+ smoothing.push_back (last);
+ }
+ }
+
+ for (int i = 0; i < N; ++i) {
+
+ int const next_for_window = i + after;
+
+ if (next_for_window < N) {
+ smoothing.push_back (_analysis->get_point(channel, i)[AudioPoint::RMS]);
+ } else {
+ smoothing.push_back (last);
+ }
+
+ smoothing.pop_front ();
+
+ float p = 0;
+ for (list<float>::const_iterator j = smoothing.begin(); j != smoothing.end(); ++j) {
+ p += pow (*j, 2);
+ }
+
+ if (smoothing.size() > 0) {
+ p = sqrt (p / smoothing.size ());
+ }
+
+ path.AddLineToPoint (_db_label_width + i * _x_scale, y_for_linear (p));
+ }
+}
+
+void
+AudioPlot::set_gain (float g)
+{
+ _gain = g;
+ Refresh ();
+}
+
+void
+AudioPlot::set_smoothing (int s)
+{
+ _smoothing = s;
+ Refresh ();
}
projects / dcpomatic.git / blobdiff