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https://github.com/TwilitRealm/dusklight
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PJB3005
82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
#ifndef JASDSPCHANNEL_H
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#define JASDSPCHANNEL_H
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#include "JSystem/JAudio2/JASDSPInterface.h"
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/**
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* @ingroup jsystem-jaudio
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* Responsible for allocating and prioritizing the available hardware DSP channels.
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*/
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struct JASDSPChannel {
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/**
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* Callback used to update DSP channel information on a regular basis.
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* Parameters are a CallbackType, hardware channel, and specified user data.
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* Return -1 to immediately abort playback.
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*/
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typedef s32 (*Callback)(u32, JASDsp::TChannel*, void*);
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enum Status {
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/* 0 */ STATUS_ACTIVE,
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/* 1 */ STATUS_INACTIVE,
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/* 2 */ STATUS_DROP,
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};
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enum CallbackType {
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/**
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* Fired on a regular basis during play to update parameters.
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*/
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/* 0 */ CB_PLAY,
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/**
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* Fired once, when the channel starts playing.
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*/
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/* 1 */ CB_START,
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/**
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* Fired once, when the channel naturally finishes playing.
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*/
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/* 2 */ CB_STOP,
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/**
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* Fired once, if the channel is abruptly stopped due to an error or prioritization.
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*/
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/* 3 */ CB_DROP,
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};
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JASDSPChannel();
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void free();
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void start();
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void drop();
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void setPriority(u8);
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void updateProc();
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u8 getStatus() const { return mStatus; }
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static void initAll();
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static JASDSPChannel* alloc(u8, Callback, void*);
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static JASDSPChannel* allocForce(u8, Callback, void*);
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static JASDSPChannel* getLowestChannel(int);
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static JASDSPChannel* getLowestActiveChannel();
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static void updateAll();
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static int killActiveChannel();
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static JASDSPChannel* getHandle(u32);
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static u32 getNumUse();
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static u32 getNumFree();
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static u32 getNumBreak();
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static JASDSPChannel* sDspChannels;
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/* 0x00 */ s32 mStatus;
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/**
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* Priority of this DSP channel. Used to
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*/
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/* 0x04 */ s16 mPriority;
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/* 0x08 */ u32 mFlags;
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/* 0x0C */ u32 mUpdateCounter;
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/* 0x10 */ Callback mCallback;
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/* 0x14 */ void* mCallbackData;
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/* 0x18 */ JASDsp::TChannel* mChannel;
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}; // Size: 0x1C
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#endif /* JASDSPCHANNEL_H */
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