1 /*
2 * Copyright (C) 2002 - David W. Durham
3 *
4 * This file is part of ReZound, an audio editing application.
5 *
6 * ReZound is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published
8 * by the Free Software Foundation; either version 2 of the License,
9 * or (at your option) any later version.
10 *
11 * ReZound is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
19 */
20
21 #include "CActionSound.h"
22
23 #include <stdexcept>
24
25 #include "CSoundPlayerChannel.h"
26 #include "CSound.h"
27
28 #include "settings.h"
29 #include "unit_conv.h"
30
31
32 // ----------------------------------------------------------------------
33 // -- CActionSound ------------------------------------------------------
34 // ----------------------------------------------------------------------
35
CActionSound(CSoundPlayerChannel * _channel,CrossfadeEdgesTypes _doCrossfadeEdges)36 CActionSound::CActionSound(CSoundPlayerChannel *_channel,CrossfadeEdgesTypes _doCrossfadeEdges) :
37 sound(_channel->getSound()),
38 doCrossfadeEdges(_doCrossfadeEdges)
39 {
40 if(_channel==NULL)
41 throw(runtime_error(string(__func__)+" -- channel parameter is NULL"));
42
43 start=_channel->getStartPosition();
44 stop=_channel->getStopPosition();
45
46 playPosition=_channel->getPosition();
47
48 // now shift playPosition by a setting
49 const int playPositionShift=s_to_samples_offset(gPlayPositionShift,sound->getSampleRate());
50 if(playPositionShift!=0)
51 {
52 if(playPositionShift>0 && (playPosition+playPositionShift)<sound->getLength()) // don't overrun the length
53 playPosition+=playPositionShift;
54 else if(playPositionShift<0 && (sample_fpos_t)playPosition>playPositionShift) // don't underrun zero
55 playPosition+=playPositionShift;
56 else
57 playPosition=0;
58 }
59
60 allChannels();
61 }
62
CActionSound(const CActionSound & src)63 CActionSound::CActionSound(const CActionSound &src)
64 {
65 operator=(src);
66 }
67
countChannels() const68 unsigned CActionSound::countChannels() const
69 {
70 unsigned i=0;
71 for(unsigned t=0;t<MAX_CHANNELS;t++)
72 {
73 if(doChannel[t])
74 i++;
75 }
76 return i;
77 }
78
allChannels()79 void CActionSound::allChannels()
80 {
81 for(unsigned t=0;t<sound->getChannelCount();t++)
82 doChannel[t]=true;
83 for(unsigned t=sound->getChannelCount();t<MAX_CHANNELS;t++)
84 doChannel[t]=false;
85 }
86
noChannels()87 void CActionSound::noChannels()
88 {
89 for(unsigned t=0;t<MAX_CHANNELS;t++)
90 doChannel[t]=false;
91 }
92
selectionLength() const93 sample_pos_t CActionSound::selectionLength() const
94 {
95 return (stop-start)+1;
96 }
97
selectAll() const98 void CActionSound::selectAll() const
99 {
100 start=0;
101 stop=sound->getLength()-1;
102 }
103
selectNone() const104 void CActionSound::selectNone() const
105 {
106 start=1;
107 stop=0;
108 }
109
operator =(const CActionSound & rhs)110 CActionSound &CActionSound::operator=(const CActionSound &rhs)
111 {
112 sound=rhs.sound;
113 doCrossfadeEdges=rhs.doCrossfadeEdges;
114
115 for(unsigned t=0;t<MAX_CHANNELS;t++)
116 doChannel[t]=rhs.doChannel[t];
117
118 start=rhs.start;
119 stop=rhs.stop;
120 playPosition=rhs.playPosition;
121
122 return *this;
123 }
124
125
126
127