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* * |
* * |
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* LinuxSampler - modular, streaming capable sampler * |
* LinuxSampler - modular, streaming capable sampler * |
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* * |
* * |
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* Copyright (C) 2003 by Benno Senoner * |
* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
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* Copyright (C) 2005 Christian Schoenebeck * |
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* * |
* * |
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* This program is free software; you can redistribute it and/or modify * |
* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
* it under the terms of the GNU General Public License as published by * |
49 |
void DiskThread::Reset() { |
void DiskThread::Reset() { |
50 |
bool running = this->IsRunning(); |
bool running = this->IsRunning(); |
51 |
if (running) this->StopThread(); |
if (running) this->StopThread(); |
52 |
for (int i = 0; i < MAX_INPUT_STREAMS; i++) { |
for (int i = 0; i < CONFIG_MAX_STREAMS; i++) { |
53 |
pStreams[i]->Kill(); |
pStreams[i]->Kill(); |
54 |
} |
} |
55 |
for (int i = 1; i <= MAX_INPUT_STREAMS; i++) { |
for (int i = 1; i <= CONFIG_MAX_STREAMS; i++) { |
56 |
pCreatedStreams[i] = NULL; |
pCreatedStreams[i] = NULL; |
57 |
} |
} |
58 |
GhostQueue->init(); |
GhostQueue->init(); |
86 |
std::stringstream ss; |
std::stringstream ss; |
87 |
for (uint i = 0; i < this->Streams; i++) { |
for (uint i = 0; i < this->Streams; i++) { |
88 |
if (pStreams[i]->GetState() == Stream::state_unused) continue; |
if (pStreams[i]->GetState() == Stream::state_unused) continue; |
89 |
uint bufferfill = (uint) ((float) pStreams[i]->GetReadSpace() / (float) STREAM_BUFFER_SIZE * 100); |
uint bufferfill = (uint) ((float) pStreams[i]->GetReadSpace() / (float) CONFIG_STREAM_BUFFER_SIZE * 100); |
90 |
uint streamid = (uint) pStreams[i]->GetHandle(); |
uint streamid = (uint) pStreams[i]->GetHandle(); |
91 |
if (!streamid) continue; |
if (!streamid) continue; |
92 |
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110 |
return -1; |
return -1; |
111 |
} |
} |
112 |
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113 |
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const Stream::OrderID_t newOrder = CreateOrderID(); |
114 |
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if (!newOrder) { |
115 |
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dmsg(1,("DiskThread: there was no free slot\n")); |
116 |
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return -1; // there was no free slot |
117 |
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} |
118 |
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pStreamRef->State = Stream::state_active; |
pStreamRef->State = Stream::state_active; |
120 |
pStreamRef->OrderID = CreateOrderID(); |
pStreamRef->OrderID = newOrder; |
121 |
pStreamRef->hStream = CreateHandle(); |
pStreamRef->hStream = CreateHandle(); |
122 |
pStreamRef->pStream = NULL; // a stream has to be activated by the disk thread first |
pStreamRef->pStream = NULL; // a stream has to be activated by the disk thread first |
123 |
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if (!pStreamRef->OrderID) return -1; // there was no free slot |
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create_command_t cmd; |
create_command_t cmd; |
125 |
cmd.OrderID = pStreamRef->OrderID; |
cmd.OrderID = pStreamRef->OrderID; |
126 |
cmd.hStream = pStreamRef->hStream; |
cmd.hStream = pStreamRef->hStream; |
185 |
// # (following code should only be executed by the disk thread) |
// # (following code should only be executed by the disk thread) |
186 |
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187 |
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188 |
DiskThread::DiskThread(uint BufferWrapElements) : Thread(false, 1, -2) { |
DiskThread::DiskThread(uint BufferWrapElements) : Thread(true, false, 1, -2) { |
189 |
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DecompressionBuffer = ::gig::Sample::CreateDecompressionBuffer(CONFIG_STREAM_MAX_REFILL_SIZE); |
190 |
CreationQueue = new RingBuffer<create_command_t>(1024); |
CreationQueue = new RingBuffer<create_command_t>(1024); |
191 |
DeletionQueue = new RingBuffer<delete_command_t>(1024); |
DeletionQueue = new RingBuffer<delete_command_t>(1024); |
192 |
GhostQueue = new RingBuffer<Stream::Handle>(MAX_INPUT_STREAMS); |
GhostQueue = new RingBuffer<Stream::Handle>(CONFIG_MAX_STREAMS); |
193 |
Streams = MAX_INPUT_STREAMS; |
Streams = CONFIG_MAX_STREAMS; |
194 |
RefillStreamsPerRun = REFILL_STREAMS_PER_RUN; |
RefillStreamsPerRun = CONFIG_REFILL_STREAMS_PER_RUN; |
195 |
for (int i = 0; i < MAX_INPUT_STREAMS; i++) { |
for (int i = 0; i < CONFIG_MAX_STREAMS; i++) { |
196 |
pStreams[i] = new Stream(STREAM_BUFFER_SIZE, BufferWrapElements); // 131072 sample words |
pStreams[i] = new Stream(&DecompressionBuffer, CONFIG_STREAM_BUFFER_SIZE, BufferWrapElements); // 131072 sample words |
197 |
} |
} |
198 |
for (int i = 1; i <= MAX_INPUT_STREAMS; i++) { |
for (int i = 1; i <= CONFIG_MAX_STREAMS; i++) { |
199 |
pCreatedStreams[i] = NULL; |
pCreatedStreams[i] = NULL; |
200 |
} |
} |
201 |
} |
} |
202 |
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203 |
DiskThread::~DiskThread() { |
DiskThread::~DiskThread() { |
204 |
for (int i = 0; i < MAX_INPUT_STREAMS; i++) { |
for (int i = 0; i < CONFIG_MAX_STREAMS; i++) { |
205 |
if (pStreams[i]) delete pStreams[i]; |
if (pStreams[i]) delete pStreams[i]; |
206 |
} |
} |
207 |
if (CreationQueue) delete CreationQueue; |
if (CreationQueue) delete CreationQueue; |
208 |
if (DeletionQueue) delete DeletionQueue; |
if (DeletionQueue) delete DeletionQueue; |
209 |
if (GhostQueue) delete GhostQueue; |
if (GhostQueue) delete GhostQueue; |
210 |
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::gig::Sample::DestroyDecompressionBuffer(DecompressionBuffer); |
211 |
} |
} |
212 |
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213 |
int DiskThread::Main() { |
int DiskThread::Main() { |
214 |
dmsg(3,("Disk thread running\n")); |
dmsg(3,("Disk thread running\n")); |
215 |
while (true) { |
while (true) { |
216 |
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pthread_testcancel(); // mandatory for OSX |
217 |
IsIdle = true; // will be set to false if a stream got filled |
IsIdle = true; // will be set to false if a stream got filled |
218 |
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219 |
// if there are ghost streams, delete them |
// if there are ghost streams, delete them |
239 |
} |
} |
240 |
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241 |
// if there are deletion commands, delete those streams |
// if there are deletion commands, delete those streams |
242 |
while (Stream::UnusedStreams < Streams && DeletionQueue->read_space() > 0) { |
while (Stream::UnusedStreams < Stream::TotalStreams && DeletionQueue->read_space() > 0) { |
243 |
delete_command_t command; |
delete_command_t command; |
244 |
DeletionQueue->pop(&command); |
DeletionQueue->pop(&command); |
245 |
DeleteStream(command); |
DeleteStream(command); |
321 |
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322 |
int capped_writespace = writespace; |
int capped_writespace = writespace; |
323 |
// if there is too much buffer space available then cut the read/write |
// if there is too much buffer space available then cut the read/write |
324 |
// size to MAX_REFILL_SIZE which is by default 65536 samples = 256KBytes |
// size to CONFIG_STREAM_MAX_REFILL_SIZE which is by default 65536 samples = 256KBytes |
325 |
if (writespace > MAX_REFILL_SIZE) capped_writespace = MAX_REFILL_SIZE; |
if (writespace > CONFIG_STREAM_MAX_REFILL_SIZE) capped_writespace = CONFIG_STREAM_MAX_REFILL_SIZE; |
326 |
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327 |
// adjust the amount to read in order to ensure that the buffer wraps correctly |
// adjust the amount to read in order to ensure that the buffer wraps correctly |
328 |
int read_amount = pStreams[i]->AdjustWriteSpaceToAvoidBoundary(writespace, capped_writespace); |
int read_amount = pStreams[i]->AdjustWriteSpaceToAvoidBoundary(writespace, capped_writespace); |
329 |
// if we wasn't able to refill one of the stream buffers by more than |
// if we wasn't able to refill one of the stream buffers by more than |
330 |
// MIN_REFILL_SIZE we'll send the disk thread to sleep later |
// CONFIG_STREAM_MIN_REFILL_SIZE we'll send the disk thread to sleep later |
331 |
if (pStreams[i]->ReadAhead(read_amount) > MIN_REFILL_SIZE) this->IsIdle = false; |
if (pStreams[i]->ReadAhead(read_amount) > CONFIG_STREAM_MIN_REFILL_SIZE) this->IsIdle = false; |
332 |
} |
} |
333 |
} |
} |
334 |
} |
} |
343 |
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344 |
/// order ID Generator |
/// order ID Generator |
345 |
Stream::OrderID_t DiskThread::CreateOrderID() { |
Stream::OrderID_t DiskThread::CreateOrderID() { |
346 |
static uint32_t counter = 0; |
static Stream::OrderID_t counter(0); |
347 |
for (int i = 0; i < MAX_INPUT_STREAMS; i++) { |
for (int i = 0; i < CONFIG_MAX_STREAMS; i++) { |
348 |
if (counter == MAX_INPUT_STREAMS) counter = 1; // we use '0' as 'invalid order' only, so we skip 0 |
if (counter == CONFIG_MAX_STREAMS) counter = 1; // we use '0' as 'invalid order' only, so we skip 0 |
349 |
else counter++; |
else counter++; |
350 |
if (!pCreatedStreams[counter]) { |
if (!pCreatedStreams[counter]) { |
351 |
pCreatedStreams[counter] = SLOT_RESERVED; // mark this slot as reserved |
pCreatedStreams[counter] = SLOT_RESERVED; // mark this slot as reserved |