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openal-soft/Alc/bformatdec.h

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Add a dual-band ambisonic decoder This uses a virtual B-Format buffer for mixing, and then uses a dual-band decoder for improved positional quality. This currently only works with first- order output since first-order input (from the AL_EXT_BFROMAT extension) would not sound correct when fed through a second- or third-order decoder. This also does not currently implement near-field compensation since near-field rendering effects are not implemented.
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#ifndef BFORMATDEC_H
#define BFORMATDEC_H
#include "alMain.h"
struct AmbDecConf;
struct BFormatDec;
Add a stand-alone upsampler for higher-order ambisonic oputput
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struct AmbiUpsampler;
Add a dual-band ambisonic decoder This uses a virtual B-Format buffer for mixing, and then uses a dual-band decoder for improved positional quality. This currently only works with first- order output since first-order input (from the AL_EXT_BFROMAT extension) would not sound correct when fed through a second- or third-order decoder. This also does not currently implement near-field compensation since near-field rendering effects are not implemented.
2016-03-15 05:08:05 -07:00
Add a config option for distance compensation
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enum BFormatDecFlags {
BFDF_DistanceComp = 1<<0
};
Add a dual-band ambisonic decoder This uses a virtual B-Format buffer for mixing, and then uses a dual-band decoder for improved positional quality. This currently only works with first- order output since first-order input (from the AL_EXT_BFROMAT extension) would not sound correct when fed through a second- or third-order decoder. This also does not currently implement near-field compensation since near-field rendering effects are not implemented.
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struct BFormatDec *bformatdec_alloc();
void bformatdec_free(struct BFormatDec *dec);
Add a specific output for first-order sources
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int bformatdec_getOrder(const struct BFormatDec *dec);
Add a config option for distance compensation
2016-03-26 17:52:42 -07:00
void bformatdec_reset(struct BFormatDec *dec, const struct AmbDecConf *conf, ALuint chancount, ALuint srate, const ALuint chanmap[MAX_OUTPUT_CHANNELS], int flags);
Up-sample first-order content when using a higher order HQ decoder
2016-03-23 12:53:36 -07:00
/* Decodes the ambisonic input to the given output channels. */
Add a dual-band ambisonic decoder This uses a virtual B-Format buffer for mixing, and then uses a dual-band decoder for improved positional quality. This currently only works with first- order output since first-order input (from the AL_EXT_BFROMAT extension) would not sound correct when fed through a second- or third-order decoder. This also does not currently implement near-field compensation since near-field rendering effects are not implemented.
2016-03-15 05:08:05 -07:00
void bformatdec_process(struct BFormatDec *dec, ALfloat (*restrict OutBuffer)[BUFFERSIZE], ALuint OutChannels, ALfloat (*restrict InSamples)[BUFFERSIZE], ALuint SamplesToDo);
Up-sample first-order content when using a higher order HQ decoder
2016-03-23 12:53:36 -07:00
/* Up-samples a first-order input to the decoder's configuration. */
void bformatdec_upSample(struct BFormatDec *dec, ALfloat (*restrict OutBuffer)[BUFFERSIZE], ALfloat (*restrict InSamples)[BUFFERSIZE], ALuint InChannels, ALuint SamplesToDo);
Add a stand-alone upsampler for higher-order ambisonic oputput
2016-07-30 09:29:21 -07:00
/* Stand-alone first-order upsampler. Kept here because it shares some stuff
* with bformatdec.
*/
struct AmbiUpsampler *ambiup_alloc();
void ambiup_free(struct AmbiUpsampler *ambiup);
void ambiup_reset(struct AmbiUpsampler *ambiup, const ALCdevice *device);
void ambiup_process(struct AmbiUpsampler *ambiup, ALfloat (*restrict OutBuffer)[BUFFERSIZE], ALuint OutChannels, ALfloat (*restrict InSamples)[BUFFERSIZE], ALuint SamplesToDo);
Add a dual-band ambisonic decoder This uses a virtual B-Format buffer for mixing, and then uses a dual-band decoder for improved positional quality. This currently only works with first- order output since first-order input (from the AL_EXT_BFROMAT extension) would not sound correct when fed through a second- or third-order decoder. This also does not currently implement near-field compensation since near-field rendering effects are not implemented.
2016-03-15 05:08:05 -07:00
#endif /* BFORMATDEC_H */
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