diff options
Diffstat (limited to 'alc/alu.h')
| -rw-r--r-- | alc/alu.h | 287 |
1 files changed, 4 insertions, 283 deletions
@@ -25,9 +25,9 @@ struct ALbufferlistitem; struct ALeffectslot; - enum class DistanceModel; + #define MAX_PITCH 255 #define MAX_SENDS 16 @@ -35,283 +35,6 @@ enum class DistanceModel; #define DITHER_RNG_SEED 22222 -enum SpatializeMode { - SpatializeOff = AL_FALSE, - SpatializeOn = AL_TRUE, - SpatializeAuto = AL_AUTO_SOFT -}; - -enum class Resampler { - Point, - Linear, - Cubic, - FastBSinc12, - BSinc12, - FastBSinc24, - BSinc24, - - Max = BSinc24 -}; -extern Resampler ResamplerDefault; - -/* The number of distinct scale and phase intervals within the bsinc filter - * table. - */ -#define BSINC_SCALE_BITS 4 -#define BSINC_SCALE_COUNT (1<<BSINC_SCALE_BITS) -#define BSINC_PHASE_BITS 5 -#define BSINC_PHASE_COUNT (1<<BSINC_PHASE_BITS) - -/* Interpolator state. Kind of a misnomer since the interpolator itself is - * stateless. This just keeps it from having to recompute scale-related - * mappings for every sample. - */ -struct BsincState { - ALfloat sf; /* Scale interpolation factor. */ - ALuint m; /* Coefficient count. */ - ALuint l; /* Left coefficient offset. */ - /* Filter coefficients, followed by the scale, phase, and scale-phase - * delta coefficients. Starting at phase index 0, each subsequent phase - * index follows contiguously. - */ - const ALfloat *filter; -}; - -union InterpState { - BsincState bsinc; -}; - -using ResamplerFunc = const ALfloat*(*)(const InterpState *state, const ALfloat *RESTRICT src, - ALuint frac, ALuint increment, const al::span<float> dst); - - -enum { - AF_None = 0, - AF_LowPass = 1, - AF_HighPass = 2, - AF_BandPass = AF_LowPass | AF_HighPass -}; - - -struct MixHrtfFilter { - const HrirArray *Coeffs; - ALsizei Delay[2]; - ALfloat Gain; - ALfloat GainStep; -}; - - -struct DirectParams { - BiquadFilter LowPass; - BiquadFilter HighPass; - - NfcFilter NFCtrlFilter; - - struct { - HrtfFilter Old; - HrtfFilter Target; - HrtfState State; - } Hrtf; - - struct { - ALfloat Current[MAX_OUTPUT_CHANNELS]; - ALfloat Target[MAX_OUTPUT_CHANNELS]; - } Gains; -}; - -struct SendParams { - BiquadFilter LowPass; - BiquadFilter HighPass; - - struct { - ALfloat Current[MAX_OUTPUT_CHANNELS]; - ALfloat Target[MAX_OUTPUT_CHANNELS]; - } Gains; -}; - - -struct ALvoicePropsBase { - ALfloat Pitch; - ALfloat Gain; - ALfloat OuterGain; - ALfloat MinGain; - ALfloat MaxGain; - ALfloat InnerAngle; - ALfloat OuterAngle; - ALfloat RefDistance; - ALfloat MaxDistance; - ALfloat RolloffFactor; - std::array<ALfloat,3> Position; - std::array<ALfloat,3> Velocity; - std::array<ALfloat,3> Direction; - std::array<ALfloat,3> OrientAt; - std::array<ALfloat,3> OrientUp; - ALboolean HeadRelative; - DistanceModel mDistanceModel; - Resampler mResampler; - ALboolean DirectChannels; - SpatializeMode mSpatializeMode; - - ALboolean DryGainHFAuto; - ALboolean WetGainAuto; - ALboolean WetGainHFAuto; - ALfloat OuterGainHF; - - ALfloat AirAbsorptionFactor; - ALfloat RoomRolloffFactor; - ALfloat DopplerFactor; - - std::array<ALfloat,2> StereoPan; - - ALfloat Radius; - - /** Direct filter and auxiliary send info. */ - struct { - ALfloat Gain; - ALfloat GainHF; - ALfloat HFReference; - ALfloat GainLF; - ALfloat LFReference; - } Direct; - struct SendData { - ALeffectslot *Slot; - ALfloat Gain; - ALfloat GainHF; - ALfloat HFReference; - ALfloat GainLF; - ALfloat LFReference; - } Send[MAX_SENDS]; -}; - -struct ALvoiceProps : public ALvoicePropsBase { - std::atomic<ALvoiceProps*> next{nullptr}; - - DEF_NEWDEL(ALvoiceProps) -}; - -#define VOICE_IS_STATIC (1u<<0) -#define VOICE_IS_FADING (1u<<1) /* Fading sources use gain stepping for smooth transitions. */ -#define VOICE_IS_AMBISONIC (1u<<2) /* Voice needs HF scaling for ambisonic upsampling. */ -#define VOICE_HAS_HRTF (1u<<3) -#define VOICE_HAS_NFC (1u<<4) - -struct ALvoice { - enum State { - Stopped = 0, - Playing = 1, - Stopping = 2 - }; - - std::atomic<ALvoiceProps*> mUpdate{nullptr}; - - std::atomic<ALuint> mSourceID{0u}; - std::atomic<State> mPlayState{Stopped}; - - ALvoicePropsBase mProps; - - /** - * Source offset in samples, relative to the currently playing buffer, NOT - * the whole queue. - */ - std::atomic<ALuint> mPosition; - /** Fractional (fixed-point) offset to the next sample. */ - std::atomic<ALuint> mPositionFrac; - - /* Current buffer queue item being played. */ - std::atomic<ALbufferlistitem*> mCurrentBuffer; - - /* Buffer queue item to loop to at end of queue (will be NULL for non- - * looping voices). - */ - std::atomic<ALbufferlistitem*> mLoopBuffer; - - /* Properties for the attached buffer(s). */ - FmtChannels mFmtChannels; - ALuint mFrequency; - ALuint mNumChannels; - ALuint mSampleSize; - - /** Current target parameters used for mixing. */ - ALuint mStep; - - ResamplerFunc mResampler; - - InterpState mResampleState; - - ALuint mFlags; - - struct DirectData { - int FilterType; - al::span<FloatBufferLine> Buffer; - }; - DirectData mDirect; - - struct SendData { - int FilterType; - al::span<FloatBufferLine> Buffer; - }; - std::array<SendData,MAX_SENDS> mSend; - - struct ChannelData { - alignas(16) std::array<ALfloat,MAX_RESAMPLER_PADDING> mPrevSamples; - - ALfloat mAmbiScale; - BandSplitter mAmbiSplitter; - - DirectParams mDryParams; - std::array<SendParams,MAX_SENDS> mWetParams; - }; - std::array<ChannelData,MAX_INPUT_CHANNELS> mChans; - - ALvoice() = default; - ALvoice(const ALvoice&) = delete; - ALvoice(ALvoice&& rhs) noexcept { *this = std::move(rhs); } - ~ALvoice() { delete mUpdate.exchange(nullptr, std::memory_order_acq_rel); } - ALvoice& operator=(const ALvoice&) = delete; - ALvoice& operator=(ALvoice&& rhs) noexcept - { - ALvoiceProps *old_update{mUpdate.load(std::memory_order_relaxed)}; - mUpdate.store(rhs.mUpdate.exchange(old_update, std::memory_order_relaxed), - std::memory_order_relaxed); - - mSourceID.store(rhs.mSourceID.load(std::memory_order_relaxed), std::memory_order_relaxed); - mPlayState.store(rhs.mPlayState.load(std::memory_order_relaxed), - std::memory_order_relaxed); - - mProps = rhs.mProps; - - mPosition.store(rhs.mPosition.load(std::memory_order_relaxed), std::memory_order_relaxed); - mPositionFrac.store(rhs.mPositionFrac.load(std::memory_order_relaxed), - std::memory_order_relaxed); - - mCurrentBuffer.store(rhs.mCurrentBuffer.load(std::memory_order_relaxed), - std::memory_order_relaxed); - mLoopBuffer.store(rhs.mLoopBuffer.load(std::memory_order_relaxed), - std::memory_order_relaxed); - - mFmtChannels = rhs.mFmtChannels; - mFrequency = rhs.mFrequency; - mNumChannels = rhs.mNumChannels; - mSampleSize = rhs.mSampleSize; - - mStep = rhs.mStep; - mResampler = rhs.mResampler; - - mResampleState = rhs.mResampleState; - - mFlags = rhs.mFlags; - - mDirect = rhs.mDirect; - mSend = rhs.mSend; - mChans = rhs.mChans; - - return *this; - } - - void mix(ALvoice::State vstate, ALCcontext *Context, const ALuint SamplesToDo); -}; - - using MixerFunc = void(*)(const al::span<const float> InSamples, const al::span<FloatBufferLine> OutBuffer, float *CurrentGains, const float *TargetGains, const size_t Counter, const size_t OutPos); @@ -321,6 +44,9 @@ using HrtfDirectMixerFunc = void(*)(FloatBufferLine &LeftOut, FloatBufferLine &R const al::span<const FloatBufferLine> InSamples, float2 *AccumSamples, DirectHrtfState *State, const size_t BufferSize); +extern MixerFunc MixSamples; +extern RowMixerFunc MixRowSamples; + #define GAIN_MIX_MAX (1000.0f) /* +60dB */ @@ -369,8 +95,6 @@ void aluInitRenderer(ALCdevice *device, ALint hrtf_id, HrtfRequestMode hrtf_appr void aluInitEffectPanning(ALeffectslot *slot, ALCdevice *device); -ResamplerFunc PrepareResampler(Resampler resampler, ALuint increment, InterpState *state); - /** * Calculates ambisonic encoder coefficients using the X, Y, and Z direction * components, which must represent a normalized (unit length) vector, and the @@ -441,9 +165,6 @@ void aluMixData(ALCdevice *device, ALvoid *OutBuffer, const ALuint NumSamples); /* Caller must lock the device state, and the mixer must not be running. */ void aluHandleDisconnect(ALCdevice *device, const char *msg, ...) DECL_FORMAT(printf, 2, 3); -extern MixerFunc MixSamples; -extern RowMixerFunc MixRowSamples; - extern const ALfloat ConeScale; extern const ALfloat ZScale; |