| 1 |
schoenebeck |
53 |
/*************************************************************************** |
| 2 |
|
|
* * |
| 3 |
|
|
* LinuxSampler - modular, streaming capable sampler * |
| 4 |
|
|
* * |
| 5 |
schoenebeck |
56 |
* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
| 6 |
schoenebeck |
385 |
* Copyright (C) 2005 Christian Schoenebeck * |
| 7 |
schoenebeck |
53 |
* * |
| 8 |
|
|
* 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 * |
| 10 |
|
|
* the Free Software Foundation; either version 2 of the License, or * |
| 11 |
|
|
* (at your option) any later version. * |
| 12 |
|
|
* * |
| 13 |
|
|
* This program is distributed in the hope that it will be useful, * |
| 14 |
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| 15 |
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| 16 |
|
|
* GNU General Public License for more details. * |
| 17 |
|
|
* * |
| 18 |
|
|
* You should have received a copy of the GNU General Public License * |
| 19 |
|
|
* along with this program; if not, write to the Free Software * |
| 20 |
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
| 21 |
|
|
* MA 02111-1307 USA * |
| 22 |
|
|
***************************************************************************/ |
| 23 |
|
|
|
| 24 |
|
|
#ifndef __LS_GIG_DISKTHREAD_H__ |
| 25 |
|
|
#define __LS_GIG_DISKTHREAD_H__ |
| 26 |
|
|
|
| 27 |
|
|
#include "../../common/global.h" |
| 28 |
|
|
|
| 29 |
|
|
#if DEBUG_HEADERS |
| 30 |
|
|
# warning DiskThread.h included |
| 31 |
|
|
#endif // DEBUG_HEADERS |
| 32 |
|
|
|
| 33 |
|
|
#define REFILL_STREAMS_PER_RUN 4 ///< number of streams that should be refilled with each disk thread cycle |
| 34 |
|
|
#define MIN_REFILL_SIZE 1024 ///< if no buffer was filled up more than this bottom limit, the disk thread will go to sleep |
| 35 |
|
|
#define MAX_REFILL_SIZE 65536 ///< maximum of samples a buffer should be refilled in one cycle (256kB, as 16 bit stereo) |
| 36 |
|
|
#define STREAM_BUFFER_SIZE 131072 ///< the diskstream ringbuffer size (256kB as sample_t is 16bit) |
| 37 |
schoenebeck |
80 |
#define MAX_INPUT_STREAMS 150 ///< number of streams that should be allocated |
| 38 |
schoenebeck |
53 |
|
| 39 |
|
|
#include "../../common/Thread.h" |
| 40 |
|
|
#include "../../common/RingBuffer.h" |
| 41 |
schoenebeck |
385 |
#include "../../lib/fileloader/libgig/gig.h" |
| 42 |
schoenebeck |
53 |
#include "Stream.h" |
| 43 |
|
|
#include "Voice.h" |
| 44 |
|
|
|
| 45 |
|
|
namespace LinuxSampler { namespace gig { |
| 46 |
|
|
|
| 47 |
|
|
int CompareStreamWriteSpace(const void* a, const void* b); |
| 48 |
|
|
|
| 49 |
|
|
class DiskThread : public Thread { |
| 50 |
|
|
public: |
| 51 |
|
|
// Methods |
| 52 |
|
|
DiskThread(uint BufferWrapElements); |
| 53 |
|
|
~DiskThread(); |
| 54 |
|
|
void Reset(); |
| 55 |
|
|
String GetBufferFillBytes(); |
| 56 |
|
|
String GetBufferFillPercentage(); |
| 57 |
|
|
int OrderNewStream(Stream::reference_t* pStreamRef, ::gig::Sample* pSample, unsigned long SampleOffset, bool DoLoop); |
| 58 |
|
|
int OrderDeletionOfStream(Stream::reference_t* pStreamRef); |
| 59 |
|
|
Stream* AskForCreatedStream(Stream::OrderID_t StreamOrderID); |
| 60 |
|
|
|
| 61 |
|
|
// the number of streams currently in usage |
| 62 |
|
|
// printed on the console the main thread (along with the active voice count) |
| 63 |
|
|
int ActiveStreamCount; |
| 64 |
|
|
int ActiveStreamCountMax; |
| 65 |
|
|
|
| 66 |
|
|
protected: |
| 67 |
schoenebeck |
385 |
::gig::buffer_t DecompressionBuffer; ///< Used for thread safe streaming. |
| 68 |
|
|
|
| 69 |
schoenebeck |
53 |
int Main(); ///< Implementation of virtual method from class Thread |
| 70 |
schoenebeck |
385 |
|
| 71 |
|
|
friend class Stream; |
| 72 |
schoenebeck |
53 |
private: |
| 73 |
|
|
// Private Types |
| 74 |
|
|
struct create_command_t { |
| 75 |
|
|
Stream::OrderID_t OrderID; |
| 76 |
|
|
Stream::Handle hStream; |
| 77 |
|
|
Stream::reference_t* pStreamRef; |
| 78 |
|
|
::gig::Sample* pSample; |
| 79 |
|
|
unsigned long SampleOffset; |
| 80 |
|
|
bool DoLoop; |
| 81 |
|
|
}; |
| 82 |
|
|
struct delete_command_t { |
| 83 |
|
|
Stream* pStream; |
| 84 |
|
|
Stream::Handle hStream; |
| 85 |
|
|
Stream::OrderID_t OrderID; |
| 86 |
|
|
}; |
| 87 |
|
|
|
| 88 |
|
|
// Attributes |
| 89 |
|
|
bool IsIdle; |
| 90 |
|
|
uint Streams; |
| 91 |
|
|
RingBuffer<create_command_t>* CreationQueue; ///< Contains commands to create streams |
| 92 |
|
|
RingBuffer<delete_command_t>* DeletionQueue; ///< Contains commands to delete streams |
| 93 |
|
|
RingBuffer<Stream::Handle>* GhostQueue; ///< Contains handles to streams that are not used anymore and weren't deletable immediately |
| 94 |
|
|
unsigned int RefillStreamsPerRun; ///< How many streams should be refilled in each loop run |
| 95 |
|
|
Stream* pStreams[MAX_INPUT_STREAMS]; ///< Contains all disk streams (wether used or unused) |
| 96 |
|
|
Stream* pCreatedStreams[MAX_INPUT_STREAMS + 1]; ///< This is where the voice (audio thread) picks up it's meanwhile hopefully created disk stream. |
| 97 |
|
|
static Stream* SLOT_RESERVED; ///< This value is used to mark an entry in pCreatedStreams[] as reserved. |
| 98 |
|
|
|
| 99 |
|
|
// Methods |
| 100 |
|
|
void CreateStream(create_command_t& Command); |
| 101 |
|
|
void DeleteStream(delete_command_t& Command); |
| 102 |
|
|
void RefillStreams(); |
| 103 |
|
|
Stream::Handle CreateHandle(); |
| 104 |
|
|
Stream::OrderID_t CreateOrderID(); |
| 105 |
|
|
}; |
| 106 |
|
|
|
| 107 |
|
|
}} // namespace LinuxSampler::gig |
| 108 |
|
|
|
| 109 |
|
|
#endif // __LS_GIG_DISKTHREAD_H__ |
Parent Directory
| 
Revision Log