1 |
/*************************************************************************** |
2 |
* * |
3 |
* LinuxSampler - modular, streaming capable sampler * |
4 |
* * |
5 |
* Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck * |
6 |
* Copyright (C) 2005-2009 Christian Schoenebeck * |
7 |
* Copyright (C) 2009 Grigor Iliev * |
8 |
* * |
9 |
* This program is free software; you can redistribute it and/or modify * |
10 |
* it under the terms of the GNU General Public License as published by * |
11 |
* the Free Software Foundation; either version 2 of the License, or * |
12 |
* (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 * |
17 |
* GNU General Public License for more details. * |
18 |
* * |
19 |
* You should have received a copy of the GNU General Public License * |
20 |
* along with this program; if not, write to the Free Software * |
21 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
22 |
* MA 02111-1307 USA * |
23 |
***************************************************************************/ |
24 |
|
25 |
#include "EngineChannel.h" |
26 |
#include "Engine.h" |
27 |
|
28 |
namespace LinuxSampler { namespace gig { |
29 |
EngineChannel::EngineChannel() { |
30 |
|
31 |
} |
32 |
|
33 |
EngineChannel::~EngineChannel() { |
34 |
DisconnectAudioOutputDevice(); |
35 |
// In case the channel was removed before the instrument was |
36 |
// fully loaded, try to give back instrument again (see bug #113) |
37 |
InstrumentChangeCmd< ::gig::DimensionRegion, ::gig::Instrument>& cmd = ChangeInstrument(NULL); |
38 |
if (cmd.pInstrument) { |
39 |
InstrumentResourceManager* instrs = dynamic_cast<InstrumentResourceManager*>(pEngine->GetInstrumentManager()); |
40 |
instrs->HandBack(cmd.pInstrument, this); |
41 |
} |
42 |
/////// |
43 |
} |
44 |
|
45 |
AbstractEngine::Format EngineChannel::GetEngineFormat() { return AbstractEngine::GIG; } |
46 |
|
47 |
/** This method is not thread safe! */ |
48 |
void EngineChannel::ResetInternal() { |
49 |
CurrentKeyDimension = 0; |
50 |
EngineChannelBase<Voice, ::gig::DimensionRegion, ::gig::Instrument>::ResetInternal(); |
51 |
} |
52 |
|
53 |
/** |
54 |
* Will be called by the MIDIIn Thread to signal that a program |
55 |
* change should be performed. As a program change isn't |
56 |
* real-time safe, the actual change is performed by the disk |
57 |
* thread. |
58 |
* |
59 |
* @param Program - MIDI program change number |
60 |
*/ |
61 |
void EngineChannel::SendProgramChange(uint8_t Program) { |
62 |
Engine* engine = dynamic_cast<Engine*>(pEngine); |
63 |
if(engine == NULL) return; |
64 |
|
65 |
if(engine->GetDiskThread()) { |
66 |
engine->GetDiskThread()->OrderProgramChange(Program, this); |
67 |
} else { |
68 |
// TODO: |
69 |
} |
70 |
} |
71 |
|
72 |
/** |
73 |
* Load an instrument from a .gig file. PrepareLoadInstrument() has to |
74 |
* be called first to provide the information which instrument to load. |
75 |
* This method will then actually start to load the instrument and block |
76 |
* the calling thread until loading was completed. |
77 |
* |
78 |
* @see PrepareLoadInstrument() |
79 |
*/ |
80 |
void EngineChannel::LoadInstrument() { |
81 |
InstrumentResourceManager* pInstrumentManager = dynamic_cast<InstrumentResourceManager*>(pEngine->GetInstrumentManager()); |
82 |
|
83 |
// make sure we don't trigger any new notes with an old |
84 |
// instrument |
85 |
InstrumentChangeCmd< ::gig::DimensionRegion, ::gig::Instrument>& cmd = ChangeInstrument(0); |
86 |
if (cmd.pInstrument) { |
87 |
// give old instrument back to instrument manager, but |
88 |
// keep the dimension regions and samples that are in use |
89 |
pInstrumentManager->HandBackInstrument(cmd.pInstrument, this, cmd.pRegionsInUse); |
90 |
} |
91 |
cmd.pRegionsInUse->clear(); |
92 |
|
93 |
// delete all key groups |
94 |
ActiveKeyGroups.clear(); |
95 |
|
96 |
// request gig instrument from instrument manager |
97 |
::gig::Instrument* newInstrument; |
98 |
try { |
99 |
InstrumentManager::instrument_id_t instrid; |
100 |
instrid.FileName = InstrumentFile; |
101 |
instrid.Index = InstrumentIdx; |
102 |
|
103 |
newInstrument = pInstrumentManager->Borrow(instrid, this); |
104 |
if (!newInstrument) { |
105 |
throw InstrumentManagerException("resource was not created"); |
106 |
} |
107 |
} |
108 |
catch (RIFF::Exception e) { |
109 |
InstrumentStat = -2; |
110 |
StatusChanged(true); |
111 |
String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message; |
112 |
throw Exception(msg); |
113 |
} |
114 |
catch (InstrumentManagerException e) { |
115 |
InstrumentStat = -3; |
116 |
StatusChanged(true); |
117 |
String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message(); |
118 |
throw Exception(msg); |
119 |
} |
120 |
catch (...) { |
121 |
InstrumentStat = -4; |
122 |
StatusChanged(true); |
123 |
throw Exception("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file."); |
124 |
} |
125 |
|
126 |
RoundRobinIndex = 0; |
127 |
for (int i = 0 ; i < 128 ; i++) pMIDIKeyInfo[i].pRoundRobinIndex = NULL; |
128 |
|
129 |
// rebuild ActiveKeyGroups map with key groups of current |
130 |
// instrument and set the round robin pointers to use one |
131 |
// counter for each region |
132 |
int region = 0; |
133 |
for (::gig::Region* pRegion = newInstrument->GetFirstRegion(); pRegion; pRegion = newInstrument->GetNextRegion()) { |
134 |
if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL; |
135 |
|
136 |
RoundRobinIndexes[region] = 0; |
137 |
for (int iKey = pRegion->KeyRange.low; iKey <= pRegion->KeyRange.high; iKey++) { |
138 |
pMIDIKeyInfo[iKey].pRoundRobinIndex = &RoundRobinIndexes[region]; |
139 |
} |
140 |
region++; |
141 |
} |
142 |
|
143 |
InstrumentIdxName = newInstrument->pInfo->Name; |
144 |
InstrumentStat = 100; |
145 |
|
146 |
ChangeInstrument(newInstrument); |
147 |
|
148 |
StatusChanged(true); |
149 |
} |
150 |
|
151 |
void EngineChannel::ProcessKeySwitchChange(int key) { |
152 |
// Change key dimension value if key is in keyswitching area |
153 |
{ |
154 |
if (key >= pInstrument->DimensionKeyRange.low && key <= pInstrument->DimensionKeyRange.high) |
155 |
CurrentKeyDimension = float(key - pInstrument->DimensionKeyRange.low) / |
156 |
(pInstrument->DimensionKeyRange.high - pInstrument->DimensionKeyRange.low + 1); |
157 |
} |
158 |
} |
159 |
|
160 |
}} // namespace LinuxSampler::gig |