/[svn]/linuxsampler/trunk/src/diskthread.h
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revision 17 by schoenebeck, Fri Nov 21 15:07:23 2003 UTC revision 18 by schoenebeck, Sun Dec 7 05:03:43 2003 UTC
# Line 23  Line 23 
23  #ifndef __DISKTHREAD_H__  #ifndef __DISKTHREAD_H__
24  #define __DISKTHREAD_H__  #define __DISKTHREAD_H__
25    
26  #define MAX_BUF_PERCENT 0.8  #define REFILL_STREAMS_PER_RUN          4       ///< number of streams that should be refilled with each disk thread cycle
27  #define MIN_REFILL_SIZE 1024  #define MIN_REFILL_SIZE                 1024    ///< if no buffer was filled up more than this bottom limit, the disk thread will go to sleep
28  #define MAX_REFILL_SIZE 65536  #define MAX_REFILL_SIZE                 65536   ///< maximum of samples a buffer should be refilled in one cycle (256kB, as 16 bit stereo)
29  // the diskstream ringbuffer size (256kB as sample_t is 16bit)  #define STREAM_BUFFER_SIZE              131072  ///< the diskstream ringbuffer size (256kB as sample_t is 16bit)
30  #define STREAM_BUFFER_SIZE 131072  #define MAX_INPUT_STREAMS               100     ///< number of streams that should be allocated
 #define MAX_INPUT_STREAMS 100  
31    
32  #include <stdio.h>  #include <stdio.h>
33  #include <stdlib.h>  #include <stdlib.h>
# Line 62  class DiskThread : public Thread { Line 61  class DiskThread : public Thread {
61      private:      private:
62          // Private Types          // Private Types
63          struct create_command_t {          struct create_command_t {
64                Stream::OrderID_t    OrderID;
65                Stream::Handle       hStream;
66              Stream::reference_t* pStreamRef;              Stream::reference_t* pStreamRef;
67              gig::Sample*         pSample;              gig::Sample*         pSample;
68              unsigned long        SampleOffset;              unsigned long        SampleOffset;
# Line 73  class DiskThread : public Thread { Line 74  class DiskThread : public Thread {
74          };          };
75    
76          // Attributes          // Attributes
77          bool                          IsIdle;          bool                           IsIdle;
78          uint                          Streams;          uint                           Streams;
79          RingBuffer<create_command_t>* CreationQueue;          RingBuffer<create_command_t>*  CreationQueue;                          ///< Contains commands to create streams
80          RingBuffer<delete_command_t>* DeletionQueue;          RingBuffer<delete_command_t>*  DeletionQueue;                          ///< Contains commands to delete streams
81          unsigned int                  RefillStreamsPerRun; // how many streams should be refilled in each loop run          RingBuffer<Stream::Handle>*    GhostQueue;                             ///< Contains handles to streams that are not used anymore and weren't deletable immediately
82          Stream*                       pStreams[MAX_INPUT_STREAMS];            ///< Contains all disk streams (wether used or unused)          unsigned int                   RefillStreamsPerRun;                    ///< How many streams should be refilled in each loop run
83          Stream*                       pCreatedStreams[MAX_INPUT_STREAMS + 1]; ///< This is where the voice (audio thread) picks up it's meanwhile hopefully created disk stream.          Stream*                        pStreams[MAX_INPUT_STREAMS];            ///< Contains all disk streams (wether used or unused)
84            Stream*                        pCreatedStreams[MAX_INPUT_STREAMS + 1]; ///< This is where the voice (audio thread) picks up it's meanwhile hopefully created disk stream.
85            static Stream*                 SLOT_RESERVED;                          ///< This value is used to mark an entry in pCreatedStreams[] as reserved.
86    
87          // Methods          // Methods
88          void                          CreateStream(create_command_t& Command);          void                           CreateStream(create_command_t& Command);
89          void                          DeleteStream(delete_command_t& Command);          void                           DeleteStream(delete_command_t& Command);
90          void                          RefillStreams();          void                           RefillStreams();
91          Stream::Handle                CreateHandle();          Stream::Handle                 CreateHandle();
92          Stream::OrderID_t             CreateOrderID();          Stream::OrderID_t              CreateOrderID();
93  };  };
94    
95  #endif // __DISKTHREAD_H__  #endif // __DISKTHREAD_H__
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