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No commits in common. "90cc6ba0347d12ab0139f682c0c21835aadc268d" and "c231a9097e9bf816a5661e82c43c6e7ed1a49a4e" have entirely different histories.

3 changed files with 10 additions and 26 deletions

View file

@ -60,24 +60,19 @@ static void
_init_buffers(int fft_size) { _init_buffers(int fft_size) {
if(fft_size != _fft_size) { if(fft_size != _fft_size) {
fft_free(); fft_free();
_fft_size = 0;
_dftSetup = vDSP_DFT_zrop_CreateSetup(NULL, fft_size * 2, vDSP_DFT_FORWARD); _dftSetup = vDSP_DFT_zrop_CreateSetup(NULL, fft_size * 2, vDSP_DFT_FORWARD);
if(!_dftSetup) return;
_dftBuffer.realp = _memalign_calloc(fft_size, sizeof(Float32), 16); _dftBuffer.realp = _memalign_calloc(fft_size, sizeof(Float32), 16);
_dftBuffer.imagp = _memalign_calloc(fft_size, sizeof(Float32), 16); _dftBuffer.imagp = _memalign_calloc(fft_size, sizeof(Float32), 16);
if(!_dftBuffer.realp || !_dftBuffer.imagp) return;
_window = _memalign_calloc(fft_size * 2, sizeof(Float32), 16); _window = _memalign_calloc(fft_size * 2, sizeof(Float32), 16);
if(!_window) return;
vDSP_blkman_window(_window, fft_size * 2, 0); vDSP_blkman_window(_window, fft_size * 2, 0);
Float32 normFactor = 2.0f / (fft_size * 2); Float32 normFactor = 2.0f / (fft_size * 2);
vDSP_vsmul(_window, 1, &normFactor, _window, 1, fft_size * 2); vDSP_vsmul(_window, 1, &normFactor, _window, 1, fft_size * 2);
_rawSpectrum = (struct SpectrumData *) _memalign_calloc(sizeof(struct SpectrumData) + sizeof(Float32) * fft_size, 1, 16); _rawSpectrum = (struct SpectrumData *) _memalign_calloc(sizeof(struct SpectrumData) + sizeof(Float32) * fft_size, 1, 16);
if(!_rawSpectrum) return;
_rawSpectrum->length = fft_size; _rawSpectrum->length = fft_size;
_fft_size = fft_size; _fft_size = fft_size;
@ -85,14 +80,7 @@ _init_buffers(int fft_size) {
} }
void fft_calculate(const float *data, float *freq, int fft_size) { void fft_calculate(const float *data, float *freq, int fft_size) {
if(!freq || !fft_size) return;
_init_buffers(fft_size); _init_buffers(fft_size);
if(!_fft_size || !data) {
// Decibels
float kZeroLevel = -128.0;
vDSP_vfill(&kZeroLevel, freq, 1, fft_size);
return;
}
// Split the waveform // Split the waveform
DSPSplitComplex dest = { _dftBuffer.realp, _dftBuffer.imagp }; DSPSplitComplex dest = { _dftBuffer.realp, _dftBuffer.imagp };
@ -123,7 +111,7 @@ void fft_calculate(const float *data, float *freq, int fft_size) {
cblas_scopy(fft_size, rawSpectrum, 1, freq, 1); cblas_scopy(fft_size, rawSpectrum, 1, freq, 1);
} }
void __attribute__((destructor)) fft_free(void) { void fft_free(void) {
free(_dftBuffer.realp); free(_dftBuffer.realp);
free(_dftBuffer.imagp); free(_dftBuffer.imagp);
free(_window); free(_window);
@ -135,5 +123,4 @@ void __attribute__((destructor)) fft_free(void) {
_dftBuffer.imagp = NULL; _dftBuffer.imagp = NULL;
_window = NULL; _window = NULL;
_rawSpectrum = NULL; _rawSpectrum = NULL;
_dftSetup = NULL;
} }

View file

@ -11,8 +11,6 @@
#import <Metal/Metal.h> #import <Metal/Metal.h>
#import <Accelerate/Accelerate.h>
#import "analyzer.h" #import "analyzer.h"
#import "Logging.h" #import "Logging.h"
@ -418,14 +416,16 @@ extern NSString *CogPlaybackDidStopNotificiation;
for(int i = 0; i < 11; ++i) { for(int i = 0; i < 11; ++i) {
float maxValue = 0.0; float maxValue = 0.0;
float maxMax = 0.0; float maxMax = 0.0;
{ for(int j = 0; j < maxBars; ++j) {
const int barBase = i * barStep; const int barBase = i * barStep;
const int barEnd = (barBase + maxBars) <= _draw_data.bar_count ? (barBase + maxBars) : _draw_data.bar_count; const int barIndex = barBase + j;
{ if(barIndex < _draw_data.bar_count) {
const int stride = sizeof(ddb_analyzer_draw_bar_t) / sizeof(Float32); if(bar[barIndex].bar_height > maxValue) {
const int barCount = barEnd - barBase + 1; maxValue = bar[barIndex].bar_height;
vDSP_maxv(&bar[barBase].bar_height, stride, &maxValue, barCount); }
vDSP_maxv(&bar[barBase].peak_ypos, stride, &maxMax, barCount); if(bar[barIndex].peak_ypos > maxMax) {
maxMax = bar[barIndex].peak_ypos;
}
} }
} }
SCNNode *node = nodes[i + 1]; SCNNode *node = nodes[i + 1];

View file

@ -23,8 +23,6 @@
#ifndef analyzer_h #ifndef analyzer_h
#define analyzer_h #define analyzer_h
#include <stdint.h>
#ifdef __cplusplus #ifdef __cplusplus
extern "C" { extern "C" {
#endif #endif
@ -54,7 +52,6 @@ typedef struct {
float xpos; float xpos;
float peak_ypos; float peak_ypos;
float bar_height; float bar_height;
uint32_t unused;
} ddb_analyzer_draw_bar_t; } ddb_analyzer_draw_bar_t;
typedef struct { typedef struct {