1 |
iliev |
2012 |
/*************************************************************************** |
2 |
|
|
* * |
3 |
|
|
* LinuxSampler - modular, streaming capable sampler * |
4 |
|
|
* * |
5 |
|
|
* Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck * |
6 |
persson |
2055 |
* Copyright (C) 2005-2008 Christian Schoenebeck * |
7 |
schoenebeck |
3054 |
* Copyright (C) 2009-2011 Christian Schoenebeck and Grigor Iliev * |
8 |
|
|
* Copyright (C) 2012-2016 Christian Schoenebeck * |
9 |
iliev |
2012 |
* * |
10 |
|
|
* This program is free software; you can redistribute it and/or modify * |
11 |
|
|
* it under the terms of the GNU General Public License as published by * |
12 |
|
|
* the Free Software Foundation; either version 2 of the License, or * |
13 |
|
|
* (at your option) any later version. * |
14 |
|
|
* * |
15 |
|
|
* This program is distributed in the hope that it will be useful, * |
16 |
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
17 |
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
18 |
|
|
* GNU General Public License for more details. * |
19 |
|
|
* * |
20 |
|
|
* You should have received a copy of the GNU General Public License * |
21 |
|
|
* along with this program; if not, write to the Free Software * |
22 |
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
23 |
|
|
* MA 02111-1307 USA * |
24 |
|
|
***************************************************************************/ |
25 |
|
|
|
26 |
|
|
#ifndef __LS_VOICEBASE_H__ |
27 |
|
|
#define __LS_VOICEBASE_H__ |
28 |
|
|
|
29 |
iliev |
2015 |
#include "AbstractVoice.h" |
30 |
iliev |
2012 |
|
31 |
|
|
namespace LinuxSampler { |
32 |
|
|
|
33 |
iliev |
2015 |
template <class EC /* Engine Channel */, class R /* Region */, class S /* Sample */, class D /* DiskThread */> |
34 |
|
|
class VoiceBase : public AbstractVoice { |
35 |
iliev |
2012 |
public: |
36 |
iliev |
2015 |
D* pDiskThread; ///< Pointer to the disk thread, to be able to order a disk stream and later to delete the stream again |
37 |
|
|
int RealSampleWordsLeftToRead; ///< Number of samples left to read, not including the silence added for the interpolator |
38 |
iliev |
2012 |
|
39 |
iliev |
2217 |
VoiceBase(SignalUnitRack* pRack = NULL): AbstractVoice(pRack) { |
40 |
iliev |
2015 |
pRegion = NULL; |
41 |
|
|
pDiskThread = NULL; |
42 |
|
|
} |
43 |
|
|
virtual ~VoiceBase() { } |
44 |
|
|
|
45 |
iliev |
2012 |
virtual R* GetRegion() { return pRegion; } |
46 |
|
|
|
47 |
iliev |
2015 |
virtual unsigned long GetSampleCacheSize() { |
48 |
|
|
return pSample->GetCache().Size; |
49 |
|
|
} |
50 |
|
|
|
51 |
|
|
/** |
52 |
|
|
* Initializes and triggers the voice, a disk stream will be launched if |
53 |
|
|
* needed. |
54 |
|
|
* |
55 |
|
|
* @param pEngineChannel - engine channel on which this voice was ordered |
56 |
|
|
* @param itNoteOnEvent - event that caused triggering of this voice |
57 |
|
|
* @param PitchBend - MIDI detune factor (-8192 ... +8191) |
58 |
|
|
* @param pRegion - points to the region which provides sample wave(s) and articulation data |
59 |
|
|
* @param VoiceType - type of this voice |
60 |
|
|
* @param iKeyGroup - a value > 0 defines a key group in which this voice is member of |
61 |
|
|
* @returns 0 on success, a value < 0 if the voice wasn't triggered |
62 |
|
|
* (either due to an error or e.g. because no region is |
63 |
|
|
* defined for the given key) |
64 |
|
|
*/ |
65 |
|
|
virtual int Trigger ( |
66 |
|
|
AbstractEngineChannel* pEngineChannel, |
67 |
|
|
Pool<Event>::Iterator& itNoteOnEvent, |
68 |
|
|
int PitchBend, |
69 |
|
|
R* pRegion, |
70 |
|
|
type_t VoiceType, |
71 |
|
|
int iKeyGroup |
72 |
|
|
) { |
73 |
|
|
this->pRegion = pRegion; |
74 |
|
|
this->pSample = pRegion->pSample; // sample won't change until the voice is finished |
75 |
|
|
|
76 |
|
|
return AbstractVoice::Trigger ( |
77 |
|
|
pEngineChannel, itNoteOnEvent, PitchBend, VoiceType, iKeyGroup |
78 |
|
|
); |
79 |
|
|
} |
80 |
|
|
|
81 |
|
|
virtual int OrderNewStream() { |
82 |
|
|
int res = pDiskThread->OrderNewStream ( |
83 |
iliev |
2216 |
&DiskStreamRef, pRegion, MaxRAMPos + GetRAMCacheOffset(), !RAMLoop |
84 |
iliev |
2015 |
); |
85 |
|
|
|
86 |
|
|
if (res < 0) { |
87 |
|
|
dmsg(1,("Disk stream order failed!\n")); |
88 |
|
|
KillImmediately(); |
89 |
|
|
return -1; |
90 |
|
|
} |
91 |
|
|
|
92 |
|
|
return 0; |
93 |
|
|
} |
94 |
iliev |
2216 |
|
95 |
|
|
/** The offset of the RAM cache from the sample start (in sample units). */ |
96 |
|
|
virtual int GetRAMCacheOffset() { return 0; } |
97 |
iliev |
2015 |
|
98 |
|
|
/** |
99 |
|
|
* Renders the audio data for this voice for the current audio fragment. |
100 |
|
|
* The sample input data can either come from RAM (cached sample or sample |
101 |
|
|
* part) or directly from disk. The output signal will be rendered by |
102 |
|
|
* resampling / interpolation. If this voice is a disk streaming voice and |
103 |
|
|
* the voice completely played back the cached RAM part of the sample, it |
104 |
|
|
* will automatically switch to disk playback for the next RenderAudio() |
105 |
|
|
* call. |
106 |
|
|
* |
107 |
|
|
* @param Samples - number of samples to be rendered in this audio fragment cycle |
108 |
|
|
*/ |
109 |
|
|
void Render(uint Samples) { |
110 |
|
|
// select default values for synthesis mode bits |
111 |
|
|
SYNTHESIS_MODE_SET_LOOP(SynthesisMode, false); |
112 |
|
|
|
113 |
|
|
switch (this->PlaybackState) { |
114 |
|
|
|
115 |
|
|
case Voice::playback_state_init: |
116 |
|
|
this->PlaybackState = Voice::playback_state_ram; // we always start playback from RAM cache and switch then to disk if needed |
117 |
|
|
// no break - continue with playback_state_ram |
118 |
|
|
|
119 |
|
|
case Voice::playback_state_ram: { |
120 |
|
|
if (RAMLoop) SYNTHESIS_MODE_SET_LOOP(SynthesisMode, true); // enable looping |
121 |
|
|
|
122 |
|
|
// render current fragment |
123 |
|
|
Synthesize(Samples, (sample_t*) pSample->GetCache().pStart, Delay); |
124 |
|
|
|
125 |
|
|
if (DiskVoice) { |
126 |
|
|
// check if we reached the allowed limit of the sample RAM cache |
127 |
|
|
if (finalSynthesisParameters.dPos > MaxRAMPos) { |
128 |
iliev |
2027 |
dmsg(5,("VoiceBase: switching to disk playback (Pos=%f)\n", finalSynthesisParameters.dPos)); |
129 |
iliev |
2015 |
this->PlaybackState = Voice::playback_state_disk; |
130 |
|
|
} |
131 |
|
|
} else if (finalSynthesisParameters.dPos >= pSample->GetCache().Size / SmplInfo.FrameSize) { |
132 |
|
|
this->PlaybackState = Voice::playback_state_end; |
133 |
|
|
} |
134 |
|
|
} |
135 |
|
|
break; |
136 |
|
|
|
137 |
|
|
case Voice::playback_state_disk: { |
138 |
|
|
if (!DiskStreamRef.pStream) { |
139 |
|
|
// check if the disk thread created our ordered disk stream in the meantime |
140 |
|
|
DiskStreamRef.pStream = pDiskThread->AskForCreatedStream(DiskStreamRef.OrderID); |
141 |
|
|
if (!DiskStreamRef.pStream) { |
142 |
schoenebeck |
2375 |
std::cerr << "Disk stream not available in time!\n" << std::flush; |
143 |
iliev |
2015 |
KillImmediately(); |
144 |
|
|
return; |
145 |
|
|
} |
146 |
schoenebeck |
3054 |
DiskStreamRef.pStream->IncrementReadPos(uint( |
147 |
|
|
SmplInfo.ChannelCount * (int(finalSynthesisParameters.dPos) - MaxRAMPos) |
148 |
|
|
)); |
149 |
iliev |
2015 |
finalSynthesisParameters.dPos -= int(finalSynthesisParameters.dPos); |
150 |
|
|
RealSampleWordsLeftToRead = -1; // -1 means no silence has been added yet |
151 |
|
|
} |
152 |
|
|
|
153 |
|
|
const int sampleWordsLeftToRead = DiskStreamRef.pStream->GetReadSpace(); |
154 |
|
|
|
155 |
|
|
// add silence sample at the end if we reached the end of the stream (for the interpolator) |
156 |
|
|
if (DiskStreamRef.State == Stream::state_end) { |
157 |
|
|
const int maxSampleWordsPerCycle = (GetEngine()->MaxSamplesPerCycle << CONFIG_MAX_PITCH) * SmplInfo.ChannelCount + 6; // +6 for the interpolator algorithm |
158 |
|
|
if (sampleWordsLeftToRead <= maxSampleWordsPerCycle) { |
159 |
|
|
// remember how many sample words there are before any silence has been added |
160 |
|
|
if (RealSampleWordsLeftToRead < 0) RealSampleWordsLeftToRead = sampleWordsLeftToRead; |
161 |
|
|
DiskStreamRef.pStream->WriteSilence(maxSampleWordsPerCycle - sampleWordsLeftToRead); |
162 |
|
|
} |
163 |
|
|
} |
164 |
|
|
|
165 |
|
|
sample_t* ptr = (sample_t*)DiskStreamRef.pStream->GetReadPtr(); // get the current read_ptr within the ringbuffer where we read the samples from |
166 |
|
|
|
167 |
|
|
// render current audio fragment |
168 |
|
|
Synthesize(Samples, ptr, Delay); |
169 |
|
|
|
170 |
|
|
const int iPos = (int) finalSynthesisParameters.dPos; |
171 |
|
|
const int readSampleWords = iPos * SmplInfo.ChannelCount; // amount of sample words actually been read |
172 |
|
|
DiskStreamRef.pStream->IncrementReadPos(readSampleWords); |
173 |
|
|
finalSynthesisParameters.dPos -= iPos; // just keep fractional part of playback position |
174 |
|
|
|
175 |
|
|
// change state of voice to 'end' if we really reached the end of the sample data |
176 |
|
|
if (RealSampleWordsLeftToRead >= 0) { |
177 |
|
|
RealSampleWordsLeftToRead -= readSampleWords; |
178 |
|
|
if (RealSampleWordsLeftToRead <= 0) this->PlaybackState = Voice::playback_state_end; |
179 |
|
|
} |
180 |
|
|
} |
181 |
|
|
break; |
182 |
|
|
|
183 |
|
|
case Voice::playback_state_end: |
184 |
iliev |
2027 |
std::cerr << "VoiceBase::Render(): entered with playback_state_end, this is a bug!\n" << std::flush; |
185 |
iliev |
2015 |
break; |
186 |
|
|
} |
187 |
|
|
|
188 |
|
|
// Reset delay |
189 |
|
|
Delay = 0; |
190 |
|
|
|
191 |
|
|
itTriggerEvent = Pool<Event>::Iterator(); |
192 |
|
|
|
193 |
|
|
// If sample stream or release stage finished, kill the voice |
194 |
iliev |
2205 |
if (PlaybackState == Voice::playback_state_end || EG1Finished()) { |
195 |
persson |
2055 |
KillImmediately(); |
196 |
|
|
} |
197 |
iliev |
2015 |
} |
198 |
|
|
|
199 |
|
|
/** |
200 |
|
|
* Immediately kill the voice. This method should not be used to kill |
201 |
|
|
* a normal, active voice, because it doesn't take care of things like |
202 |
|
|
* fading down the volume level to avoid clicks and regular processing |
203 |
|
|
* until the kill event actually occured! |
204 |
|
|
* |
205 |
|
|
* If it's necessary to know when the voice's disk stream was actually |
206 |
|
|
* deleted, then one can set the optional @a bRequestNotification |
207 |
|
|
* parameter and this method will then return the handle of the disk |
208 |
|
|
* stream (unique identifier) and one can use this handle to poll the |
209 |
|
|
* disk thread if this stream has been deleted. In any case this method |
210 |
|
|
* will return immediately and will not block until the stream actually |
211 |
|
|
* was deleted. |
212 |
|
|
* |
213 |
|
|
* @param bRequestNotification - (optional) whether the disk thread shall |
214 |
|
|
* provide a notification once it deleted |
215 |
|
|
* the respective disk stream |
216 |
|
|
* (default=false) |
217 |
|
|
* @returns handle to the voice's disk stream or @c Stream::INVALID_HANDLE |
218 |
|
|
* if the voice did not use a disk stream at all |
219 |
|
|
* @see Kill() |
220 |
|
|
*/ |
221 |
|
|
Stream::Handle KillImmediately(bool bRequestNotification = false) { |
222 |
|
|
Stream::Handle hStream = Stream::INVALID_HANDLE; |
223 |
|
|
if (DiskVoice && DiskStreamRef.State != Stream::state_unused) { |
224 |
|
|
pDiskThread->OrderDeletionOfStream(&DiskStreamRef, bRequestNotification); |
225 |
|
|
hStream = DiskStreamRef.hStream; |
226 |
|
|
} |
227 |
|
|
Reset(); |
228 |
|
|
return hStream; |
229 |
|
|
} |
230 |
|
|
|
231 |
iliev |
2012 |
protected: |
232 |
iliev |
2015 |
S* pSample; ///< Pointer to the sample to be played back |
233 |
|
|
R* pRegion; ///< Pointer to the articulation information of current region of this voice |
234 |
|
|
|
235 |
schoenebeck |
2121 |
virtual MidiKeyBase* GetMidiKeyInfo(int MIDIKey) { |
236 |
|
|
EC* pChannel = static_cast<EC*>(pEngineChannel); |
237 |
|
|
return &pChannel->pMIDIKeyInfo[MIDIKey]; |
238 |
|
|
} |
239 |
|
|
|
240 |
iliev |
2015 |
virtual unsigned long GetNoteOnTime(int MIDIKey) { |
241 |
|
|
EC* pChannel = static_cast<EC*>(pEngineChannel); |
242 |
|
|
return pChannel->pMIDIKeyInfo[MIDIKey].NoteOnTime; |
243 |
|
|
} |
244 |
|
|
|
245 |
|
|
void GetFirstEventOnKey(uint8_t MIDIKey, RTList<Event>::Iterator& itEvent) { |
246 |
|
|
EC* pChannel = static_cast<EC*>(pEngineChannel); |
247 |
|
|
itEvent = pChannel->pMIDIKeyInfo[MIDIKey].pEvents->first(); |
248 |
|
|
} |
249 |
iliev |
2012 |
}; |
250 |
|
|
} // namespace LinuxSampler |
251 |
|
|
|
252 |
|
|
#endif /* __LS_VOICEBASE_H__ */ |
253 |
|
|
|