diff options
Diffstat (limited to 'rotord/src/nodes_drawing.h')
| -rw-r--r-- | rotord/src/nodes_drawing.h | 38 |
1 files changed, 33 insertions, 5 deletions
diff --git a/rotord/src/nodes_drawing.h b/rotord/src/nodes_drawing.h index d6b7abe..3c26c9f 100644 --- a/rotord/src/nodes_drawing.h +++ b/rotord/src/nodes_drawing.h @@ -113,7 +113,31 @@ namespace Rotor { private: Colour colour; }; - class Waves: public Draw_node { + class Audio_viz: public Draw_node { + public: + Audio_viz(){} + Audio_viz(map<string,string> &settings):Audio_viz() { + base_settings(settings); + }; + ~Audio_viz(){}; + Audio_viz* clone(map<string,string> &_settings) { return new Audio_viz(_settings);}; + void vector_output(cairo_t * cr,const Frame_spec &frame){ + if (audioactive){ + if (!frame.audio){ + cerr<<"Audio_viz: audio not found"<<endl; + audioactive=false; + } + } + if (frame.audio){ + vector_audio_output(cr,frame); + audioactive=true; + } + } + virtual void vector_audio_output(cairo_t * cr,const Frame_spec &frame){}; + private: + bool audioactive; + }; + class Waves: public Audio_viz { public: Waves(){ title="Waves"; @@ -124,11 +148,15 @@ namespace Rotor { }; ~Waves(){}; Waves* clone(map<string,string> &_settings) { return new Waves(_settings);}; - void vector_output(cairo_t * cr,const Frame_spec &frame){ - if (frame.audio){ - + void vector_audio_output(cairo_t * cr,const Frame_spec &frame){ + cairo_set_source_rgb(cr, 1.0,1.0,1.0); + cairo_save(cr); //not really even necessary? + cairo_translate(cr, 0, frame.h/2); + for (int i=0;i<frame.w;i++){ + cairo_line_to(cr,i,(((int16_t)frame.audio->samples[i*frame.audio->channels])*frame.h)>>16); } - else cerr<<"error: visualisation audio not found"<<endl; + cairo_restore (cr); //not really even necessary? + cairo_stroke(cr); } private: }; |