4eb01805fe
add support for mixing stereo to mono through dsp_processor (fixes #106) add sdkconfigs to github action workflow suppress warnings from flac git submodule remove unused variable and address some compiler warnings remove some dead code Signed-off-by: Karl Osterseher <karl_osterseher@gmx.at>
76 lines
1.4 KiB
C
76 lines
1.4 KiB
C
#ifndef _DSP_PROCESSOR_H_
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#define _DSP_PROCESSOR_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "esp_err.h"
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typedef enum dspFlows {
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dspfStereo,
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dspfBiamp,
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dspf2DOT1,
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dspfFunkyHonda,
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dspfBassBoost,
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dspfEQBassTreble,
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} dspFlows_t;
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enum filtertypes {
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LPF,
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HPF,
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BPF,
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BPF0DB,
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NOTCH,
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ALLPASS360,
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ALLPASS180,
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PEAKINGEQ,
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LOWSHELF,
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HIGHSHELF
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};
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// Each audio processor node consist of a data struct holding the
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// required weights and states for processing an automomous processing
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// function. The high level parameters is maintained in the structure
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// as well
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// Process node
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typedef struct ptype {
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int filtertype;
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float freq;
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float gain;
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float q;
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float *in, *out;
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float coeffs[5];
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float w[2];
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} ptype_t;
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// used to dynamically change used filters and their parameters
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typedef struct filterParams_s {
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dspFlows_t dspFlow;
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float fc_1;
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float gain_1;
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float fc_2;
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float gain_2;
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float fc_3;
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float gain_3;
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} filterParams_t;
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// TODO: this is unused, remove???
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// Process flow
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typedef struct pnode {
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ptype_t process;
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struct pnode *next;
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} pnode_t;
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void dsp_processor_init(void);
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void dsp_processor_uninit(void);
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int dsp_processor_worker(void *pcmChnk, const void *scSet);
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esp_err_t dsp_processor_update_filter_params(filterParams_t *params);
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void dsp_processor_set_volome(double volume);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _DSP_PROCESSOR_H_ */
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