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Bug Fix: Check memory allocations for FFT state

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Signed-off-by: Christopher Snowhill <kode54@gmail.com>
This commit is contained in:
Christopher Snowhill 2025-06-13 17:23:48 -07:00
parent 7988d3be32
commit 43e4dc4955
1 changed files with 12 additions and 0 deletions
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12
Audio/ThirdParty/deadbeef/fft_accelerate.c vendored
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@ -60,19 +60,24 @@ static void
_init_buffers(int fft_size) {
if(fft_size != _fft_size) {
fft_free();
_fft_size = 0;
_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.imagp = _memalign_calloc(fft_size, sizeof(Float32), 16);
if(!_dftBuffer.realp || !_dftBuffer.imagp) return;
_window = _memalign_calloc(fft_size * 2, sizeof(Float32), 16);
if(!_window) return;
vDSP_blkman_window(_window, fft_size * 2, 0);
Float32 normFactor = 2.0f / (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);
if(!_rawSpectrum) return;
_rawSpectrum->length = fft_size;
_fft_size = fft_size;
@ -80,7 +85,14 @@ _init_buffers(int fft_size) {
}
void fft_calculate(const float *data, float *freq, int fft_size) {
if(!freq || !fft_size) return;
_init_buffers(fft_size);
if(!_fft_size || !data) {
// Decibels
float kZeroLevel = -128.0;
vDSP_vfill(&kZeroLevel, freq, 1, fft_size);
return;
}
// Split the waveform
DSPSplitComplex dest = { _dftBuffer.realp, _dftBuffer.imagp };