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Revert "btstack_cvsd_plc: remove unused function"

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This reverts commit fbd9085d679240e60bad03926cf8538e726fac89.
This commit is contained in:
Matthias Ringwald 2021-05-19 15:49:14 +02:00
parent cf26f982bf
commit fdcb66e42c
2 changed files with 13 additions and 2 deletions
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14
src/classic/btstack_cvsd_plc.c
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@ -53,12 +53,22 @@
#include "btstack_cvsd_plc.h" #include "btstack_cvsd_plc.h"
#include "btstack_debug.h" #include "btstack_debug.h"
// static float rcos[CVSD_OLAL] = {
// 0.99148655f,0.96623611f,0.92510857f,0.86950446f,
// 0.80131732f,0.72286918f,0.63683150f,0.54613418f,
// 0.45386582f,0.36316850f,0.27713082f,0.19868268f,
// 0.13049554f,0.07489143f,0.03376389f,0.00851345f};
static float rcos[CVSD_OLAL] = { static float rcos[CVSD_OLAL] = {
0.99148655f,0.92510857f, 0.99148655f,0.92510857f,
0.80131732f,0.63683150f, 0.80131732f,0.63683150f,
0.45386582f,0.27713082f, 0.45386582f,0.27713082f,
0.13049554f,0.03376389f}; 0.13049554f,0.03376389f};
float btstack_cvsd_plc_rcos(int index){
if (index > CVSD_OLAL) return 0;
return rcos[index];
}
// taken from http://www.codeproject.com/Articles/69941/Best-Square-Root-Method-Algorithm-Function-Precisi // taken from http://www.codeproject.com/Articles/69941/Best-Square-Root-Method-Algorithm-Function-Precisi
// Algorithm: Babylonian Method + some manipulations on IEEE 32 bit floating point representation // Algorithm: Babylonian Method + some manipulations on IEEE 32 bit floating point representation
static float sqrt3(const float x){ static float sqrt3(const float x){

1
src/classic/btstack_cvsd_plc.h
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@ -87,6 +87,7 @@ void btstack_cvsd_dump_statistics(btstack_cvsd_plc_state_t * state);
int btstack_cvsd_plc_pattern_match(BTSTACK_CVSD_PLC_SAMPLE_FORMAT *y); int btstack_cvsd_plc_pattern_match(BTSTACK_CVSD_PLC_SAMPLE_FORMAT *y);
float btstack_cvsd_plc_amplitude_match(btstack_cvsd_plc_state_t *plc_state, uint16_t num_samples, BTSTACK_CVSD_PLC_SAMPLE_FORMAT *y, BTSTACK_CVSD_PLC_SAMPLE_FORMAT bestmatch); float btstack_cvsd_plc_amplitude_match(btstack_cvsd_plc_state_t *plc_state, uint16_t num_samples, BTSTACK_CVSD_PLC_SAMPLE_FORMAT *y, BTSTACK_CVSD_PLC_SAMPLE_FORMAT bestmatch);
BTSTACK_CVSD_PLC_SAMPLE_FORMAT btstack_cvsd_plc_crop_sample(float val); BTSTACK_CVSD_PLC_SAMPLE_FORMAT btstack_cvsd_plc_crop_sample(float val);
float btstack_cvsd_plc_rcos(int index);
#ifdef OCTAVE_OUTPUT #ifdef OCTAVE_OUTPUT
void btstack_cvsd_plc_octave_set_base_name(const char * name); void btstack_cvsd_plc_octave_set_base_name(const char * name);