167 lines
5.2 KiB
C++
167 lines
5.2 KiB
C++
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/*******************************************************************************/
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/* Copyright (C) 2008 Jonathan Moore Liles */
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/* */
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/* This program is free software; you can redistribute it and/or modify it */
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/* under the terms of the GNU General Public License as published by the */
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/* Free Software Foundation; either version 2 of the License, or (at your */
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/* option) any later version. */
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/* */
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/* This program is distributed in the hope that it will be useful, but WITHOUT */
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for */
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/* more details. */
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/* */
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/* You should have received a copy of the GNU General Public License along */
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/* with This program; see the file COPYING. If not,write to the Free Software */
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/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/*******************************************************************************/
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#pragma once
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#include "Timeline.H"
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#include "Sequence_Region.H"
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class Audio_File;
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class Fl_Menu_;
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class Fl_Menu_Button;
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class Audio_Region : public Sequence_Region
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{
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/* not permitted */
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Audio_Region & operator = ( const Audio_Region &rhs );
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static void peaks_ready_callback ( void *v );
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public:
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static bool inherit_track_color;
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static bool show_box;
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struct Fade
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{
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enum fade_type_e { Linear = 0, Sigmoid, Logarithmic, Parabolic };
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enum fade_dir_e { In, Out };
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fade_type_e type;
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nframes_t length;
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Fade ( )
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{
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type = Linear;
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length = 0;
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}
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bool
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operator< ( const Fade &rhs ) const
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{
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return length < rhs.length;
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}
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float increment ( void ) const
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{
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return 1.0f / (float)length;
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}
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/** Return gain for frame /index/ of /nframes/ on a gain curve
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* of type /type/.*/
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/* FIXME: calling a function per sample is bad, switching on
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* type mid fade is bad. */
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inline float
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gain ( const float fi ) const
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{
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switch ( type )
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{
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case Linear:
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return fi;
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case Sigmoid:
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return (1.0f - cos( fi * M_PI )) / 2.0f;
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case Logarithmic:
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return pow( 0.1f, (1.0f - fi) * 3.0f );
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case Parabolic:
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return 1.0f - (1.0f - fi) * (1.0f - fi);
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default:
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return 1.0f;
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}
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}
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void apply ( sample_t *buf, fade_dir_e dir, long start, nframes_t end, nframes_t nframes ) const;
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};
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/* struct Fade_In : public Fade; */
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/* struct Fade_Out : public Fade; */
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private:
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Audio_File *_clip; /* clip this region represents */
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bool _adjusting_gain;
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float _scale; /* amplitude adjustment */
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Fade _fade_in;
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Fade _fade_out;
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nframes_t _loop; /* loop point */
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friend class Track; /* for _clip */
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Fl_Menu_Button & menu ( void );
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static void menu_cb ( Fl_Widget *w, void *v );
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void menu_cb ( const Fl_Menu_ *m );
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void draw_fade ( const Fade &fade, Fade::fade_dir_e dir, bool filled, int X, int W );
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protected:
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virtual void get ( Log_Entry &e ) const;
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virtual void set ( Log_Entry &e );
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int handle ( int m );
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void draw_box( void );
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void draw ( void );
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void resize ( void );
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public:
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LOG_CREATE_FUNC( Audio_Region );
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SEQUENCE_WIDGET_CLONE_FUNC( Audio_Region );
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static Fl_Boxtype _box;
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static Fl_Color _selection_color;
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Fl_Color selection_color ( void ) const { return _selection_color; }
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void selection_color ( Fl_Color v ) { _selection_color = v; }
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void init ( void );
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Audio_Region ( )
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{
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init();
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}
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bool current ( void ) const { return this == belowmouse(); }
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const char * source_name ( void ) const;
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Audio_Region ( const Audio_Region & rhs );
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Audio_Region ( Audio_File *c );
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Audio_Region ( Audio_File *c, Sequence *t, nframes_t o );
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~Audio_Region ( );
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Fl_Boxtype box ( void ) const { return Audio_Region::_box; }
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Fl_Align align ( void ) const { return (Fl_Align)(FL_ALIGN_LEFT | FL_ALIGN_BOTTOM /*| FL_ALIGN_CLIP*/ | FL_ALIGN_INSIDE); }
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void normalize ( void );
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void split ( nframes_t where );
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/* Engine */
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nframes_t read ( sample_t *buf, nframes_t pos, nframes_t nframes, int channel ) const;
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nframes_t write ( nframes_t nframes );
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void prepare ( void );
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bool finalize ( nframes_t frame );
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};
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