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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, 2004 by Benno Senoner and Christian Schoenebeck * |
* 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 * |
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#include "../../common/global.h" |
#include "../../common/global.h" |
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#if DEBUG_HEADERS |
#include <gig.h> |
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# warning DiskThread.h included |
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#endif // DEBUG_HEADERS |
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#define REFILL_STREAMS_PER_RUN 4 ///< number of streams that should be refilled with each disk thread cycle |
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#define MIN_REFILL_SIZE 1024 ///< if no buffer was filled up more than this bottom limit, the disk thread will go to sleep |
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#define MAX_REFILL_SIZE 65536 ///< maximum of samples a buffer should be refilled in one cycle (256kB, as 16 bit stereo) |
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#define STREAM_BUFFER_SIZE 131072 ///< the diskstream ringbuffer size (256kB as sample_t is 16bit) |
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#define MAX_INPUT_STREAMS 150 ///< number of streams that should be allocated |
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#include "../../common/Thread.h" |
#include "../../common/Thread.h" |
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#include "../../common/RingBuffer.h" |
#include "../../common/RingBuffer.h" |
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int CompareStreamWriteSpace(const void* a, const void* b); |
int CompareStreamWriteSpace(const void* a, const void* b); |
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/** @brief Disk Reader Thread |
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* |
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* The disk reader thread is responsible for periodically refilling |
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* disk streams in parallel to the audio thread's rendering process. |
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*/ |
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class DiskThread : public Thread { |
class DiskThread : public Thread { |
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public: |
public: |
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// Methods |
// Methods |
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DiskThread(uint BufferWrapElements); |
DiskThread(uint BufferWrapElements); |
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~DiskThread(); |
virtual ~DiskThread(); |
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void Reset(); |
void Reset(); |
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String GetBufferFillBytes(); |
String GetBufferFillBytes(); |
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String GetBufferFillPercentage(); |
String GetBufferFillPercentage(); |
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int OrderNewStream(Stream::reference_t* pStreamRef, ::gig::Sample* pSample, unsigned long SampleOffset, bool DoLoop); |
int OrderNewStream(Stream::reference_t* pStreamRef, ::gig::DimensionRegion* pDimRgn, unsigned long SampleOffset, bool DoLoop); |
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int OrderDeletionOfStream(Stream::reference_t* pStreamRef); |
int OrderDeletionOfStream(Stream::reference_t* pStreamRef); |
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Stream* AskForCreatedStream(Stream::OrderID_t StreamOrderID); |
Stream* AskForCreatedStream(Stream::OrderID_t StreamOrderID); |
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int ActiveStreamCountMax; |
int ActiveStreamCountMax; |
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protected: |
protected: |
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::gig::buffer_t DecompressionBuffer; ///< Used for thread safe streaming. |
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int Main(); ///< Implementation of virtual method from class Thread |
int Main(); ///< Implementation of virtual method from class Thread |
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friend class Stream; |
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private: |
private: |
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// Private Types |
// Private Types |
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struct create_command_t { |
struct create_command_t { |
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Stream::OrderID_t OrderID; |
Stream::OrderID_t OrderID; |
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Stream::Handle hStream; |
Stream::Handle hStream; |
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Stream::reference_t* pStreamRef; |
Stream::reference_t* pStreamRef; |
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::gig::Sample* pSample; |
::gig::DimensionRegion* pDimRgn; |
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unsigned long SampleOffset; |
unsigned long SampleOffset; |
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bool DoLoop; |
bool DoLoop; |
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}; |
}; |
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RingBuffer<delete_command_t>* DeletionQueue; ///< Contains commands to delete streams |
RingBuffer<delete_command_t>* DeletionQueue; ///< Contains commands to delete streams |
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RingBuffer<Stream::Handle>* GhostQueue; ///< Contains handles to streams that are not used anymore and weren't deletable immediately |
RingBuffer<Stream::Handle>* GhostQueue; ///< Contains handles to streams that are not used anymore and weren't deletable immediately |
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unsigned int RefillStreamsPerRun; ///< How many streams should be refilled in each loop run |
unsigned int RefillStreamsPerRun; ///< How many streams should be refilled in each loop run |
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Stream* pStreams[MAX_INPUT_STREAMS]; ///< Contains all disk streams (wether used or unused) |
Stream* pStreams[CONFIG_MAX_STREAMS]; ///< Contains all disk streams (whether used or unused) |
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Stream* pCreatedStreams[MAX_INPUT_STREAMS + 1]; ///< This is where the voice (audio thread) picks up it's meanwhile hopefully created disk stream. |
Stream* pCreatedStreams[CONFIG_MAX_STREAMS + 1]; ///< This is where the voice (audio thread) picks up it's meanwhile hopefully created disk stream. |
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static Stream* SLOT_RESERVED; ///< This value is used to mark an entry in pCreatedStreams[] as reserved. |
static Stream* SLOT_RESERVED; ///< This value is used to mark an entry in pCreatedStreams[] as reserved. |
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// Methods |
// Methods |