/[svn]/linuxsampler/trunk/src/engines/gig/DiskThread.h
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revision 56 by schoenebeck, Tue Apr 27 09:21:58 2004 UTC revision 1424 by schoenebeck, Sun Oct 14 22:00:17 2007 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6     *   Copyright (C) 2005 - 2007 Christian Schoenebeck                       *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
9   *   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  *
# Line 23  Line 24 
24  #ifndef __LS_GIG_DISKTHREAD_H__  #ifndef __LS_GIG_DISKTHREAD_H__
25  #define __LS_GIG_DISKTHREAD_H__  #define __LS_GIG_DISKTHREAD_H__
26    
27  #include "../../common/global.h"  #include "../../common/global_private.h"
28    
29  #if DEBUG_HEADERS  #include <gig.h>
 # warning DiskThread.h included  
 #endif // DEBUG_HEADERS  
   
 #define REFILL_STREAMS_PER_RUN          4       ///< number of streams that should be refilled with each disk thread cycle  
 #define MIN_REFILL_SIZE                 1024    ///< if no buffer was filled up more than this bottom limit, the disk thread will go to sleep  
 #define MAX_REFILL_SIZE                 65536   ///< maximum of samples a buffer should be refilled in one cycle (256kB, as 16 bit stereo)  
 #define STREAM_BUFFER_SIZE              131072  ///< the diskstream ringbuffer size (256kB as sample_t is 16bit)  
 #define MAX_INPUT_STREAMS               100     ///< number of streams that should be allocated  
30    
31  #include "../../common/Thread.h"  #include "../../common/Thread.h"
32  #include "../../common/RingBuffer.h"  #include "../../common/RingBuffer.h"
# Line 44  namespace LinuxSampler { namespace gig { Line 37  namespace LinuxSampler { namespace gig {
37    
38      int CompareStreamWriteSpace(const void* a, const void* b);      int CompareStreamWriteSpace(const void* a, const void* b);
39    
40        /** @brief Disk Reader Thread
41         *
42         * The disk reader thread is responsible for periodically refilling
43         * disk streams in parallel to the audio thread's rendering process.
44         *
45         * There is also a function for releasing parts of instruments not
46         * in use anymore (as this is not real time safe, the audio thread
47         * cannot do it directly).
48         */
49      class DiskThread : public Thread {      class DiskThread : public Thread {
50          public:          public:
51              // Methods              // Methods
52              DiskThread(uint BufferWrapElements);              DiskThread(uint BufferWrapElements, InstrumentResourceManager* pInstruments);
53             ~DiskThread();              virtual ~DiskThread();
54              void    Reset();              void    Reset();
55              String  GetBufferFillBytes();              String  GetBufferFillBytes();
56              String  GetBufferFillPercentage();              String  GetBufferFillPercentage();
57              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);
58              int     OrderDeletionOfStream(Stream::reference_t* pStreamRef);              int     OrderDeletionOfStream(Stream::reference_t* pStreamRef, bool bRequestNotification = false);
59                int     OrderDeletionOfDimreg(::gig::DimensionRegion* dimreg);
60              Stream* AskForCreatedStream(Stream::OrderID_t StreamOrderID);              Stream* AskForCreatedStream(Stream::OrderID_t StreamOrderID);
61                Stream::Handle AskForDeletedStream();
62    
63              // the number of streams currently in usage              // the number of streams currently in usage
64              // printed on the console the main thread (along with the active voice count)              // printed on the console the main thread (along with the active voice count)
# Line 62  namespace LinuxSampler { namespace gig { Line 66  namespace LinuxSampler { namespace gig {
66              int ActiveStreamCountMax;              int ActiveStreamCountMax;
67    
68          protected:          protected:
69                ::gig::buffer_t DecompressionBuffer; ///< Used for thread safe streaming.
70    
71              int Main(); ///< Implementation of virtual method from class Thread              int Main(); ///< Implementation of virtual method from class Thread
72    
73                friend class Stream;
74          private:          private:
75              // Private Types              // Private Types
76              struct create_command_t {              struct create_command_t {
77                  Stream::OrderID_t    OrderID;                  Stream::OrderID_t    OrderID;
78                  Stream::Handle       hStream;                  Stream::Handle       hStream;
79                  Stream::reference_t* pStreamRef;                  Stream::reference_t* pStreamRef;
80                  ::gig::Sample*       pSample;                  ::gig::DimensionRegion* pDimRgn;
81                  unsigned long        SampleOffset;                  unsigned long        SampleOffset;
82                  bool                 DoLoop;                  bool                 DoLoop;
83              };              };
# Line 77  namespace LinuxSampler { namespace gig { Line 85  namespace LinuxSampler { namespace gig {
85                  Stream*           pStream;                  Stream*           pStream;
86                  Stream::Handle    hStream;                  Stream::Handle    hStream;
87                  Stream::OrderID_t OrderID;                  Stream::OrderID_t OrderID;
88                    bool              bNotify;
89              };              };
90    
91              // Attributes              // Attributes
92              bool                           IsIdle;              bool                           IsIdle;
93              uint                           Streams;              uint                           Streams;
94              RingBuffer<create_command_t>*  CreationQueue;                          ///< Contains commands to create streams              RingBuffer<create_command_t,false>* CreationQueue;                      ///< Contains commands to create streams
95              RingBuffer<delete_command_t>*  DeletionQueue;                          ///< Contains commands to delete streams              RingBuffer<delete_command_t,false>* DeletionQueue;                      ///< Contains commands to delete streams
96              RingBuffer<Stream::Handle>*    GhostQueue;                             ///< Contains handles to streams that are not used anymore and weren't deletable immediately              RingBuffer<delete_command_t,false>* GhostQueue;                         ///< Contains handles to streams that are not used anymore and weren't deletable immediately
97                RingBuffer<Stream::Handle,false>    DeletionNotificationQueue;          ///< In case the original sender requested a notification for its stream deletion order, this queue will receive the handle of the respective stream once actually be deleted by the disk thread.
98                RingBuffer< ::gig::DimensionRegion*,false>* DeleteDimregQueue;          ///< Contains dimension regions that are not used anymore and should be handed back to the instrument resource manager
99              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
100              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)
101              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.
102              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.
103                InstrumentResourceManager*     pInstruments;                           ///< The instrument resource manager of the engine that is using this disk thread. Used by the dimension region deletion feature.
104    
105              // Methods              // Methods
106              void                           CreateStream(create_command_t& Command);              void                           CreateStream(create_command_t& Command);
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