X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Fwx%2Faudio_plot.cc;h=0868d931a8be1d38dc7b95e0c154afce4e544a51;hb=8aeb741ccbe2edb528e98a431bf55459a6836a9b;hp=cc2d8f6b428785f513ec9be74a478b2105608ef6;hpb=040a227d300033f8a103dc6eb67847286131d9b7;p=dcpomatic.git diff --git a/src/wx/audio_plot.cc b/src/wx/audio_plot.cc index cc2d8f6b4..0868d931a 100644 --- a/src/wx/audio_plot.cc +++ b/src/wx/audio_plot.cc @@ -21,24 +21,48 @@ #include #include #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)); } @@ -46,65 +70,213 @@ void AudioPlot::set_analysis (shared_ptr 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 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::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 (); }