108 lines
4.2 KiB
C++
108 lines
4.2 KiB
C++
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/**
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* Copyright (c) 2014-2018 Enzien Audio Ltd.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _HEAVY_CONTEXT_H_
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#define _HEAVY_CONTEXT_H_
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#include "HeavyContextInterface.hpp"
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#include "HvLightPipe.h"
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#include "HvMessageQueue.h"
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#include "HvMath.h"
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struct HvTable;
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class HeavyContext : public HeavyContextInterface {
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public:
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HeavyContext(double sampleRate, int poolKb=10, int inQueueKb=2, int outQueueKb=0);
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virtual ~HeavyContext();
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int getSize() override { return (int) numBytes; }
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double getSampleRate() override { return sampleRate; }
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hv_uint32_t getCurrentSample() override { return blockStartTimestamp; }
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float samplesToMilliseconds(hv_uint32_t numSamples) override { return (float) (1000.0*numSamples/sampleRate); }
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hv_uint32_t millisecondsToSamples(float ms) override { return (hv_uint32_t) (hv_max_f(0.0f,ms)*sampleRate/1000.0); }
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void setUserData(void *x) override { userData = x; }
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void *getUserData() override { return userData; }
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// hook management
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void setSendHook(HvSendHook_t *f) override { sendHook = f; }
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HvSendHook_t *getSendHook() override { return sendHook; }
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void setPrintHook(HvPrintHook_t *f) override { printHook = f; }
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HvPrintHook_t *getPrintHook() override { return printHook; }
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// message scheduling
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bool sendMessageToReceiver(hv_uint32_t receiverHash, double delayMs, HvMessage *m) override;
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bool sendMessageToReceiverV(hv_uint32_t receiverHash, double delayMs, const char *fmt, ...) override;
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bool sendFloatToReceiver(hv_uint32_t receiverHash, float f) override;
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bool sendBangToReceiver(hv_uint32_t receiverHash) override;
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bool sendSymbolToReceiver(hv_uint32_t receiverHash, const char *symbol) override;
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bool cancelMessage(HvMessage *m, void (*sendMessage)(HeavyContextInterface *, int, const HvMessage *)) override;
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// table manipulation
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float *getBufferForTable(hv_uint32_t tableHash) override;
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int getLengthForTable(hv_uint32_t tableHash) override;
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bool setLengthForTable(hv_uint32_t tableHash, hv_uint32_t newSampleLength) override;
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// lock control
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void lockAcquire() override;
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bool lockTry() override;
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void lockRelease() override;
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// message queue management
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void setInputMessageQueueSize(int inQueueKb) override;
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void setOutputMessageQueueSize(int outQueueKb) override;
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bool getNextSentMessage(hv_uint32_t *destinationHash, HvMessage *outMsg, hv_size_t msgLength) override;
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// utility functions
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static hv_uint32_t getHashForString(const char *str);
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protected:
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virtual HvTable *getTableForHash(hv_uint32_t tableHash) = 0;
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friend HvTable *_hv_table_get(HeavyContextInterface *, hv_uint32_t);
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virtual void scheduleMessageForReceiver(hv_uint32_t receiverHash, HvMessage *m) = 0;
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friend void _hv_scheduleMessageForReceiver(HeavyContextInterface *, hv_uint32_t, HvMessage *);
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HvMessage *scheduleMessageForObject(const HvMessage *,
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void (*sendMessage)(HeavyContextInterface *, int, const HvMessage *),
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int);
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friend HvMessage *_hv_scheduleMessageForObject(HeavyContextInterface *, const HvMessage *,
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void (*sendMessage)(HeavyContextInterface *, int, const HvMessage *),
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int);
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friend void defaultSendHook(HeavyContextInterface *, const char *, hv_uint32_t, const HvMessage *);
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// object state
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double sampleRate;
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hv_uint32_t blockStartTimestamp;
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hv_size_t numBytes;
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HvMessageQueue mq;
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HvSendHook_t *sendHook;
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HvPrintHook_t *printHook;
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void *userData;
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HvLightPipe inQueue;
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HvLightPipe outQueue;
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hv_atomic_bool inQueueLock;
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hv_atomic_bool outQueueLock;
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};
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#endif // _HEAVY_CONTEXT_H_
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