/* Run one forward FFT test in test mode */
float RunOneForwardTest(int fft_log_size, int signal_type, float signal_value,
struct SnrResult* snr) {
OMX_F32* x;
OMX_FC32* y;
struct AlignedPtr* x_aligned;
struct AlignedPtr* y_aligned;
OMX_FC32* y_true;
OMX_INT n;
OMX_INT fft_spec_buffer_size;
OMXResult status;
OMXFFTSpec_R_F32 * fft_fwd_spec = NULL;
int fft_size;
fft_size = 1 << fft_log_size;
status = omxSP_FFTGetBufSize_R_F32(fft_log_size, &fft_spec_buffer_size);
if (verbose > 63) {
printf("fft_spec_buffer_size = %d\n", fft_spec_buffer_size);
}
fft_fwd_spec = (OMXFFTSpec_R_F32*) malloc(fft_spec_buffer_size);
status = omxSP_FFTInit_R_F32(fft_fwd_spec, fft_log_size);
if (status) {
fprintf(stderr, "Failed to init forward FFT: status = %d\n", status);
exit(1);
}
x_aligned = AllocAlignedPointer(32, sizeof(*x) * fft_size);
y_aligned = AllocAlignedPointer(32, sizeof(*y) * (fft_size + 2));
x = x_aligned->aligned_pointer_;
y = y_aligned->aligned_pointer_;
y_true = (OMX_FC32*) malloc(sizeof(*y_true) * (fft_size / 2 + 1));
GenerateSignal(x, y_true, fft_size, signal_type, signal_value);
if (verbose > 255) {
printf("input = %p - %p\n", x, x + fft_size);
printf("output = %p - %p\n", y, y + fft_size / 2 + 1);
DumpFFTSpec(fft_fwd_spec);
}
if (verbose > 63) {
printf("Signal\n");
DumpArrayFloat("x", fft_size, x);
printf("Expected FFT output\n");
DumpArrayComplexFloat("y", 1 + fft_size / 2, y_true);
}
status = ForwardRFFT(x, (OMX_F32*) y, fft_fwd_spec);
if (status) {
fprintf(stderr, "Forward FFT failed: status = %d\n", status);
exit(1);
}
if (verbose > 63) {
printf("FFT Output\n");
DumpArrayComplexFloat("y", 1 + fft_size / 2, y);
}
CompareComplexFloat(snr, y, y_true, fft_size / 2 + 1);
FreeAlignedPointer(x_aligned);
FreeAlignedPointer(y_aligned);
free(y_true);
free(fft_fwd_spec);
return snr->complex_snr_;
}
/* Run one inverse FFT test in test mode */
float RunOneInverseTest(int fft_log_size, int signal_type, float signal_value,
struct SnrResult* snr) {
OMX_F32* x;
OMX_FC32* y;
OMX_F32* z;
struct AlignedPtr* x_aligned;
struct AlignedPtr* y_aligned;
struct AlignedPtr* z_aligned;
OMX_FC32* yTrue;
struct AlignedPtr* yTrueAligned;
OMX_INT n;
OMX_INT fft_spec_buffer_size;
OMXResult status;
OMXFFTSpec_R_F32 * fft_fwd_spec = NULL;
OMXFFTSpec_R_F32 * fft_inv_spec = NULL;
int fft_size;
fft_size = 1 << fft_log_size;
status = omxSP_FFTGetBufSize_R_F32(fft_log_size, &fft_spec_buffer_size);
if (verbose > 3) {
printf("fft_spec_buffer_size = %d\n", fft_spec_buffer_size);
}
fft_inv_spec = (OMXFFTSpec_R_F32*)malloc(fft_spec_buffer_size);
status = omxSP_FFTInit_R_F32(fft_inv_spec, fft_log_size);
if (status) {
fprintf(stderr, "Failed to init backward FFT: status = %d\n", status);
exit(1);
}
x_aligned = AllocAlignedPointer(32, sizeof(*x) * fft_size);
y_aligned = AllocAlignedPointer(32, sizeof(*y) * (fft_size / 2 + 1));
z_aligned = AllocAlignedPointer(32, sizeof(*z) * fft_size);
yTrueAligned = AllocAlignedPointer(32, sizeof(*y) * (fft_size / 2 + 1));
x = x_aligned->aligned_pointer_;
y = y_aligned->aligned_pointer_;
z = z_aligned->aligned_pointer_;
yTrue = yTrueAligned->aligned_pointer_;
GenerateSignal(x, yTrue, fft_size, signal_type, signal_value);
if (verbose > 255) {
printf("input = %p - %p\n", yTrue, yTrue + fft_size / 2 + 1);
printf("output = %p - %p\n", z, z + fft_size);
DumpFFTSpec(fft_inv_spec);
}
if (verbose > 63) {
printf("Inverse FFT Input Signal\n");
DumpArrayComplexFloat("y", 1 + fft_size / 2, yTrue);
printf("Expected Inverse FFT output\n");
DumpArrayFloat("x", fft_size, x);
}
status = InverseRFFT((OMX_F32 *) yTrue, z, fft_inv_spec);
if (status) {
fprintf(stderr, "Inverse FFT failed: status = %d\n", status);
exit(1);
}
if (verbose > 63) {
printf("Actual Inverse FFT Output\n");
DumpArrayFloat("z", fft_size, z);
}
CompareFloat(snr, z, x, fft_size);
FreeAlignedPointer(x_aligned);
FreeAlignedPointer(y_aligned);
FreeAlignedPointer(z_aligned);
FreeAlignedPointer(yTrueAligned);
free(fft_inv_spec);
return snr->real_snr_;
}
void TimeOneFloatRFFT(int count, int fft_log_size, float signal_value,
int signal_type) {
OMX_F32* x; /* Source */
OMX_F32* y; /* Transform */
OMX_F32* z; /* Inverse transform */
OMX_F32* y_true; /* True FFT */
struct AlignedPtr* x_aligned;
struct AlignedPtr* y_aligned;
struct AlignedPtr* z_aligned;
struct AlignedPtr* y_true_aligned;
OMX_INT n, fft_spec_buffer_size;
OMXResult status;
OMXFFTSpec_R_F32 * fft_fwd_spec = NULL;
OMXFFTSpec_R_F32 * fft_inv_spec = NULL;
int fft_size;
struct timeval start_time;
struct timeval end_time;
double elapsed_time;
struct SnrResult snr_forward;
struct SnrResult snr_inverse;
fft_size = 1 << fft_log_size;
x_aligned = AllocAlignedPointer(32, sizeof(*x) * fft_size);
/* The transformed value is in CCS format and is has fft_size + 2 values */
y_aligned = AllocAlignedPointer(32, sizeof(*y) * (fft_size + 2));
z_aligned = AllocAlignedPointer(32, sizeof(*z) * fft_size);
y_true_aligned = AllocAlignedPointer(32, sizeof(*z) * (fft_size + 2));
x = x_aligned->aligned_pointer_;
y = y_aligned->aligned_pointer_;
z = z_aligned->aligned_pointer_;
y_true = y_true_aligned->aligned_pointer_;
GenerateRealFloatSignal(x, (OMX_FC32*) y_true, fft_size, signal_type,
signal_value);
status = omxSP_FFTGetBufSize_R_F32(fft_log_size, &fft_spec_buffer_size);
fft_fwd_spec = (OMXFFTSpec_R_F32*) malloc(fft_spec_buffer_size);
fft_inv_spec = (OMXFFTSpec_R_F32*) malloc(fft_spec_buffer_size);
status = omxSP_FFTInit_R_F32(fft_fwd_spec, fft_log_size);
status = omxSP_FFTInit_R_F32(fft_inv_spec, fft_log_size);
if (do_forward_test) {
GetUserTime(&start_time);
for (n = 0; n < count; ++n) {
FORWARD_FLOAT_RFFT(x, y, fft_fwd_spec);
}
GetUserTime(&end_time);
elapsed_time = TimeDifference(&start_time, &end_time);
CompareComplexFloat(&snr_forward, (OMX_FC32*) y, (OMX_FC32*) y_true, fft_size / 2 + 1);
PrintResult("Forward Float RFFT", fft_log_size, elapsed_time, count, snr_forward.complex_snr_);
}
if (do_inverse_test) {
GetUserTime(&start_time);
for (n = 0; n < count; ++n) {
INVERSE_FLOAT_RFFT(y_true, z, fft_inv_spec);
}
GetUserTime(&end_time);
elapsed_time = TimeDifference(&start_time, &end_time);
CompareFloat(&snr_inverse, (OMX_F32*) z, (OMX_F32*) x, fft_size);
PrintResult("Inverse Float RFFT", fft_log_size, elapsed_time, count, snr_inverse.complex_snr_);
}
FreeAlignedPointer(x_aligned);
FreeAlignedPointer(y_aligned);
FreeAlignedPointer(z_aligned);
free(fft_fwd_spec);
free(fft_inv_spec);
}
