HRESULT Dot11aTxFrameEncode9(PBB11A_TX_VECTOR info, IN OUT PPACKET_BASE pPacket)
{
unsigned int uiScrambledSize;
unsigned int uiSymbolCountData;
unsigned int uiPilotIndex = 0;
unsigned int i;
char * pbInput;
PTXSAMPLE pcOutput;
ULONG PacketSizePlusCRC32 = pPacket->PacketSize + 4;
ClearWindow(info->cWindow);
uiScrambledSize = SERVICE_LEN_IN_BITS + PADDING_LEN_IN_BITS
+ (PacketSizePlusCRC32 << BITS_PER_BYTE_SHIFT);
uiSymbolCountData = (uiScrambledSize + (DBPS - 1)) / DBPS;
ULONG SignalBytes = GetSignalBytes(info, uiSymbolCountData);
ULONG SampleBufferSize = 0;
SoraPacketGetTxSampleBuffer(pPacket, (PTXSAMPLE *)&pcOutput, &SampleBufferSize);
ALIGN_WITH_RCB_BUFFER_PADDING_ZERO(pcOutput, SignalBytes);
SoraPacketSetSignalLength(pPacket, SignalBytes);
// Copy preamble
pcOutput += CopyPreamble16_NT(info, pcOutput, info->cWindow);
ConvEncodeReset(info->bConvEncoderReg);
// Generate Signal
pcOutput += GenerateSignal(info, pcOutput, info->cWindow, SIGNAL_RATE,
(unsigned short)PacketSizePlusCRC32);
// Scramble Data
if (!(uiSymbolCountData & 0x1))
{
Scramble11a(pPacket->pMdl, info->bFrameScrambled,
(uiSymbolCountData >> 1) * (DBPS * 2 / BITS_PER_BYTE),
pPacket->Reserved1, info->ulRadom);
}
void COctopusAOTF::Start( void )
{
olDaSetClockFrequency( hdass_9834, 0.25 * freq * outbuffersize );
olDmAllocBuffer( 0, outbuffersize, &hBuf_DAC );
if( hBuf_DAC == NULL )
{
AfxMessageBox(_T("Error Allocating buffer."));
return;
}
GenerateSignal();
olDaPutBuffer( hdass_9834, hBuf_DAC );
olDaConfig( hdass_9834 );
olDaStart( hdass_9834 );
B.AOTF_running = true;
m_status_AOTF.SetBitmap( m_bmp_yes );
}
/* 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_;
}
/* 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_;
}
/*
* Like TestFFT, but do just the inverse FFT
*/
float RunOneInverseTest(int fft_log_size, int signal_type, float signal_value,
struct SnrResult* snr) {
OMX_SC32* x;
OMX_SC32* y;
OMX_SC32* z;
struct AlignedPtr* x_aligned;
struct AlignedPtr* y_aligned;
struct AlignedPtr* z_aligned;
OMX_INT n, fft_spec_buffer_size;
OMXResult status;
OMXFFTSpec_C_SC32 * fft_fwd_spec = NULL;
OMXFFTSpec_C_SC32 * fft_inv_spec = NULL;
int fft_size;
fft_size = 1 << fft_log_size;
status = omxSP_FFTGetBufSize_C_SC32(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_C_SC32*)malloc(fft_spec_buffer_size);
status = omxSP_FFTInit_C_SC32(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));
z_aligned = AllocAlignedPointer(32, sizeof(*z) * fft_size);
x = x_aligned->aligned_pointer_;
y = y_aligned->aligned_pointer_;
z = z_aligned->aligned_pointer_;
GenerateSignal(x, y, fft_size, signal_type);
if (verbose > 63) {
printf("Inverse FFT Input Signal\n");
printf("n\tx[n]\n");
DumpArrayComplex32("x", fft_size, y);
printf("Expected Inverse FFT output\n");
DumpArrayComplex32("y", fft_size, x);
}
status = omxSP_FFTInv_CToC_SC32_Sfs(y, z, fft_inv_spec, 0);
if (status) {
fprintf(stderr, "Inverse FFT failed: status = %d\n", status);
exit(1);
}
if (verbose > 63) {
printf("Actual Inverse FFT Output\n");
DumpArrayComplex32("y", fft_size, z);
}
CompareComplex32(snr, z, x, fft_size);
FreeAlignedPointer(x_aligned);
FreeAlignedPointer(y_aligned);
FreeAlignedPointer(z_aligned);
free(fft_inv_spec);
return snr->complex_snr_;
}