include/preset_preview_play_handle.h

   1 /*
   2  * preset_preview_play_handle.h - play-handle for playing a short preview-sound
   3  *                                of a preset or a file processed by a plugin
   4  *
   5  * Copyright (c) 2005-2008 Tobias Doerffel <tobydox/at/users.sourceforge.net>
   6  *
   7  * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2 of the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public
  20  * License along with this program (see COPYING); if not, write to the
  21  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  22  * Boston, MA 02110-1301 USA.
  23  *
  24  */
  25
  26
  27 #ifndef _PRESET_PREVIEW_PLAY_HANDLE_H
  28 #define _PRESET_PREVIEW_PLAY_HANDLE_H
  29
  30 #include "note_play_handle.h"
  31
  32
  33 class InstrumentTrack;
  34 class previewTrackContainer;
  35
  36
  37 class presetPreviewPlayHandle : public playHandle
  38 {
  39 public:
  40         presetPreviewPlayHandle( const QString & _preset_file,
  41                                                 bool _load_by_plugin = false );
  42         virtual ~presetPreviewPlayHandle();
  43
  44         virtual void play( sampleFrame * _working_buffer );
  45         virtual bool done( void ) const;
  46
  47         virtual bool isFromTrack( const track * _track ) const;
  48
  49         static void init( void );
  50         static void cleanup( void );
  51         static ConstNotePlayHandleList nphsOfInstrumentTrack(
  52                                                 const InstrumentTrack * _ct );
  53
  54
  55 private:
  56         static previewTrackContainer * s_previewTC;
  57
  58         notePlayHandle * m_previewNote;
  59
  60 } ;
  61
  62
  63 #endif