1 |
schoenebeck |
385 |
/*************************************************************************** |
2 |
|
|
* * |
3 |
|
|
* Copyright (C) 2005 Christian Schoenebeck * |
4 |
|
|
* * |
5 |
|
|
* This library is free software; you can redistribute it and/or modify * |
6 |
|
|
* it under the terms of the GNU General Public License as published by * |
7 |
|
|
* the Free Software Foundation; either version 2 of the License, or * |
8 |
|
|
* (at your option) any later version. * |
9 |
|
|
* * |
10 |
|
|
* This library is distributed in the hope that it will be useful, * |
11 |
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
12 |
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
13 |
|
|
* GNU General Public License for more details. * |
14 |
|
|
* * |
15 |
|
|
* You should have received a copy of the GNU General Public License * |
16 |
|
|
* along with this library; if not, write to the Free Software * |
17 |
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
18 |
|
|
* MA 02111-1307 USA * |
19 |
|
|
***************************************************************************/ |
20 |
|
|
|
21 |
|
|
#include "lscpinstrumentloader.h" |
22 |
|
|
|
23 |
schoenebeck |
392 |
LSCPInstrumentLoader::LSCPInstrumentLoader() : Thread(true, false, 0, -4) { |
24 |
schoenebeck |
385 |
pQueue = new RingBuffer<command_t>(INSTRUMENT_LOADER_QUEUE_SIZE); |
25 |
|
|
} |
26 |
|
|
|
27 |
|
|
LSCPInstrumentLoader::~LSCPInstrumentLoader() { |
28 |
|
|
if (pQueue) delete pQueue; |
29 |
|
|
} |
30 |
|
|
|
31 |
|
|
/** |
32 |
|
|
* @brief Order loading of a new instrument. |
33 |
|
|
* The request will go into a queue waiting to be processed by the loader |
34 |
|
|
* thread. This method will immediately return and the instrument will be |
35 |
|
|
* loaded in the background. |
36 |
|
|
* |
37 |
|
|
* @param Filename - file name of the instrument |
38 |
|
|
* @param uiInstrumentIndex - index of the instrument within the file |
39 |
schoenebeck |
411 |
* @param pEngineChannel - engine channel on which the instrument should be loaded |
40 |
schoenebeck |
385 |
*/ |
41 |
schoenebeck |
411 |
void LSCPInstrumentLoader::StartNewLoad(String Filename, uint uiInstrumentIndex, EngineChannel* pEngineChannel) { |
42 |
schoenebeck |
392 |
// already tell the engine which instrument to load |
43 |
schoenebeck |
411 |
pEngineChannel->PrepareLoadInstrument(Filename.c_str(), uiInstrumentIndex); |
44 |
schoenebeck |
392 |
|
45 |
schoenebeck |
385 |
command_t cmd; |
46 |
schoenebeck |
411 |
cmd.pEngineChannel = pEngineChannel; |
47 |
schoenebeck |
385 |
pQueue->push(&cmd); |
48 |
schoenebeck |
390 |
StartThread(); // ensure thread is running |
49 |
|
|
conditionJobsLeft.Set(true); // wake up thread |
50 |
schoenebeck |
385 |
} |
51 |
|
|
|
52 |
|
|
// Entry point for the InstrumentLoader Thread. |
53 |
|
|
int LSCPInstrumentLoader::Main() { |
54 |
schoenebeck |
390 |
while (true) { |
55 |
|
|
while (pQueue->read_space()) { |
56 |
|
|
command_t cmd; |
57 |
|
|
pQueue->pop(&cmd); |
58 |
|
|
try { |
59 |
schoenebeck |
411 |
cmd.pEngineChannel->LoadInstrument(); |
60 |
schoenebeck |
390 |
} |
61 |
|
|
catch (LinuxSamplerException e) { |
62 |
|
|
e.PrintMessage(); |
63 |
|
|
} |
64 |
schoenebeck |
385 |
} |
65 |
schoenebeck |
390 |
|
66 |
|
|
// nothing left to do, sleep until new jobs arrive |
67 |
|
|
conditionJobsLeft.WaitIf(false); |
68 |
|
|
// reset flag |
69 |
|
|
conditionJobsLeft.Set(false); |
70 |
|
|
// unlock condition object so it can be turned again by other thread |
71 |
|
|
conditionJobsLeft.Unlock(); |
72 |
schoenebeck |
385 |
} |
73 |
|
|
} |