diff options
Diffstat (limited to 'Alc/bformatdec.h')
-rw-r--r-- | Alc/bformatdec.h | 64 |
1 files changed, 35 insertions, 29 deletions
diff --git a/Alc/bformatdec.h b/Alc/bformatdec.h index 56737a60..73754be8 100644 --- a/Alc/bformatdec.h +++ b/Alc/bformatdec.h @@ -34,62 +34,68 @@ extern const ALfloat SN3D2N3DScale[MAX_AMBI_COEFFS]; extern const ALfloat FuMa2N3DScale[MAX_AMBI_COEFFS]; -struct BFormatDec { - static constexpr size_t NumBands{2}; +class BFormatDec { +public: + static constexpr size_t sNumBands{2}; - ALuint Enabled; /* Bitfield of enabled channels. */ +private: + ALuint mEnabled; /* Bitfield of enabled channels. */ union { - alignas(16) ALfloat Dual[MAX_OUTPUT_CHANNELS][NumBands][MAX_AMBI_COEFFS]; + alignas(16) ALfloat Dual[MAX_OUTPUT_CHANNELS][sNumBands][MAX_AMBI_COEFFS]; alignas(16) ALfloat Single[MAX_OUTPUT_CHANNELS][MAX_AMBI_COEFFS]; - } Matrix; + } mMatrix; /* NOTE: BandSplitter filters are unused with single-band decoding */ - BandSplitter XOver[MAX_AMBI_COEFFS]; + BandSplitter mXOver[MAX_AMBI_COEFFS]; - al::vector<std::array<ALfloat,BUFFERSIZE>, 16> Samples; + al::vector<std::array<ALfloat,BUFFERSIZE>, 16> mSamples; /* These two alias into Samples */ - std::array<ALfloat,BUFFERSIZE> *SamplesHF; - std::array<ALfloat,BUFFERSIZE> *SamplesLF; + std::array<ALfloat,BUFFERSIZE> *mSamplesHF; + std::array<ALfloat,BUFFERSIZE> *mSamplesLF; - alignas(16) ALfloat ChannelMix[BUFFERSIZE]; + alignas(16) ALfloat mChannelMix[BUFFERSIZE]; struct { BandSplitter XOver; - ALfloat Gains[NumBands]; - } UpSampler[4]; + ALfloat Gains[sNumBands]; + } mUpSampler[4]; - ALsizei NumChannels; - ALboolean DualBand; + ALsizei mNumChannels; + ALboolean mDualBand; - DEF_NEWDEL(BFormatDec) -}; +public: + void reset(const AmbDecConf *conf, ALsizei chancount, ALuint srate, const ALsizei (&chanmap)[MAX_OUTPUT_CHANNELS]); -void bformatdec_reset(BFormatDec *dec, const AmbDecConf *conf, ALsizei chancount, ALuint srate, const ALsizei (&chanmap)[MAX_OUTPUT_CHANNELS]); + /* Decodes the ambisonic input to the given output channels. */ + void process(ALfloat (*RESTRICT OutBuffer)[BUFFERSIZE], const ALsizei OutChannels, const ALfloat (*RESTRICT InSamples)[BUFFERSIZE], const ALsizei SamplesToDo); -/* Decodes the ambisonic input to the given output channels. */ -void bformatdec_process(BFormatDec *dec, ALfloat (*RESTRICT OutBuffer)[BUFFERSIZE], ALsizei OutChannels, const ALfloat (*RESTRICT InSamples)[BUFFERSIZE], ALsizei SamplesToDo); + /* Up-samples a first-order input to the decoder's configuration. */ + void upSample(ALfloat (*RESTRICT OutBuffer)[BUFFERSIZE], const ALfloat (*RESTRICT InSamples)[BUFFERSIZE], const ALsizei InChannels, const ALsizei SamplesToDo); -/* Up-samples a first-order input to the decoder's configuration. */ -void bformatdec_upSample(BFormatDec *dec, ALfloat (*RESTRICT OutBuffer)[BUFFERSIZE], const ALfloat (*RESTRICT InSamples)[BUFFERSIZE], ALsizei InChannels, ALsizei SamplesToDo); + DEF_NEWDEL(BFormatDec) +}; /* Stand-alone first-order upsampler. Kept here because it shares some stuff * with bformatdec. Assumes a periphonic (4-channel) input mix! */ -struct AmbiUpsampler { - static constexpr size_t NumBands{2}; +class AmbiUpsampler { +public: + static constexpr size_t sNumBands{2}; + +private: + alignas(16) ALfloat mSamples[sNumBands][BUFFERSIZE]; - alignas(16) ALfloat Samples[NumBands][BUFFERSIZE]; + BandSplitter mXOver[4]; - BandSplitter XOver[4]; + ALfloat mGains[4][MAX_OUTPUT_CHANNELS][sNumBands]; - ALfloat Gains[4][MAX_OUTPUT_CHANNELS][NumBands]; +public: + void reset(const ALCdevice *device, const ALfloat w_scale, const ALfloat xyz_scale); + void process(ALfloat (*RESTRICT OutBuffer)[BUFFERSIZE], const ALsizei OutChannels, const ALfloat (*RESTRICT InSamples)[BUFFERSIZE], const ALsizei SamplesToDo); DEF_NEWDEL(AmbiUpsampler) }; -void ambiup_reset(AmbiUpsampler *ambiup, const ALCdevice *device, ALfloat w_scale, ALfloat xyz_scale); -void ambiup_process(AmbiUpsampler *ambiup, ALfloat (*RESTRICT OutBuffer)[BUFFERSIZE], ALsizei OutChannels, const ALfloat (*RESTRICT InSamples)[BUFFERSIZE], ALsizei SamplesToDo); - #endif /* BFORMATDEC_H */ |