016a131f33
work in progress which eventually will enable the user to configure dsp processor on the fly using an on device http server. first try and possible fix for #22 Signed-off-by: Karl Osterseher <karli_o@gmx.at>
66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
#ifndef _DSP_PROCESSOR_H_
|
|
#define _DSP_PROCESSOR_H_
|
|
|
|
typedef enum dspFlows {
|
|
dspfStereo,
|
|
dspfBiamp,
|
|
dspf2DOT1,
|
|
dspfFunkyHonda,
|
|
dspfBassBoost,
|
|
dspfEQBassTreble,
|
|
} dspFlows_t;
|
|
|
|
enum filtertypes {
|
|
LPF,
|
|
HPF,
|
|
BPF,
|
|
BPF0DB,
|
|
NOTCH,
|
|
ALLPASS360,
|
|
ALLPASS180,
|
|
PEAKINGEQ,
|
|
LOWSHELF,
|
|
HIGHSHELF
|
|
};
|
|
|
|
// Each audio processor node consist of a data struct holding the
|
|
// required weights and states for processing an automomous processing
|
|
// function. The high level parameters is maintained in the structure
|
|
// as well
|
|
// Process node
|
|
typedef struct ptype {
|
|
int filtertype;
|
|
float freq;
|
|
float gain;
|
|
float q;
|
|
float *in, *out;
|
|
float coeffs[5];
|
|
float w[2];
|
|
} ptype_t;
|
|
|
|
// used to dynamically change used filters and their parameters
|
|
typedef struct filterParams_s {
|
|
dspFlows_t dspFlow;
|
|
float fc_1;
|
|
float gain_1;
|
|
float fc_2;
|
|
float gain_2;
|
|
float fc_3;
|
|
float gain_3;
|
|
} filterParams_t;
|
|
|
|
// TODO: this is unused, remove???
|
|
// Process flow
|
|
typedef struct pnode {
|
|
ptype_t process;
|
|
struct pnode *next;
|
|
} pnode_t;
|
|
|
|
void dsp_processor_init(void);
|
|
void dsp_processor_uninit(void);
|
|
int dsp_processor_worker(char *audio, size_t chunk_size, uint32_t samplerate);
|
|
esp_err_t dsp_processor_update_filter_params(filterParams_t *params);
|
|
void dsp_processor_set_volome(double volume);
|
|
|
|
#endif /* _DSP_PROCESSOR_H_ */
|