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Code Issues Projects Releases Wiki Activity

Added option to decimate around RF center frequency

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This commit is contained in:
f4exb
2015-07-02 02:10:14 +02:00
parent 637c6e74f7
commit 78c944ce69
6 changed files with 218 additions and 9 deletions
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plugins/samplesource/bladerf/bladerfthread.cpp
+194 -1
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@@ -151,10 +151,180 @@ void BladerfThread::decimate2_sup(SampleVector::iterator* it, const qint16* buf,
}
}
void BladerfThread::decimate2_cen(SampleVector::iterator* it, const qint16* buf, qint32 len)
{
for (int pos = 0; pos < len - 3; pos += 4) {
Sample s1(buf[pos+0] << 3, buf[pos+1] << 3);
Sample s2(buf[pos+2] << 3, buf[pos+3] << 3);
m_decimator2.myDecimate(&s1, &s2);
**it = s2;
(*it)++;
}
}
void BladerfThread::decimate4_cen(SampleVector::iterator* it, const qint16* buf, qint32 len)
{
for (int pos = 0; pos < len - 7; pos += 8) {
Sample s1(buf[pos+0] << 4, buf[pos+1] << 4);
Sample s2(buf[pos+2] << 4, buf[pos+3] << 4);
Sample s3(buf[pos+4] << 4, buf[pos+5] << 4);
Sample s4(buf[pos+6] << 4, buf[pos+7] << 4);
m_decimator2.myDecimate(&s1, &s2);
m_decimator2.myDecimate(&s3, &s4);
m_decimator4.myDecimate(&s2, &s4);
**it = s4;
(*it)++;
}
}
void BladerfThread::decimate8_cen(SampleVector::iterator* it, const qint16* buf, qint32 len)
{
for (int pos = 0; pos < len - 15; pos += 16) {
Sample s1(buf[pos+0] << 4, buf[pos+1] << 4);
Sample s2(buf[pos+2] << 4, buf[pos+3] << 4);
Sample s3(buf[pos+4] << 4, buf[pos+5] << 4);
Sample s4(buf[pos+6] << 4, buf[pos+7] << 4);
Sample s5(buf[pos+8] << 4, buf[pos+9] << 4);
Sample s6(buf[pos+10] << 4, buf[pos+11] << 4);
Sample s7(buf[pos+12] << 4, buf[pos+13] << 4);
Sample s8(buf[pos+14] << 4, buf[pos+15] << 4);
m_decimator2.myDecimate(&s1, &s2);
m_decimator2.myDecimate(&s3, &s4);
m_decimator2.myDecimate(&s5, &s6);
m_decimator2.myDecimate(&s7, &s8);
m_decimator4.myDecimate(&s2, &s4);
m_decimator4.myDecimate(&s6, &s8);
m_decimator8.myDecimate(&s4, &s8);
**it = s8;
(*it)++;
}
}
void BladerfThread::decimate16_cen(SampleVector::iterator* it, const qint16* buf, qint32 len)
{
for (int pos = 0; pos < len - 31; pos += 32) {
Sample s1(buf[pos+0] << 4, buf[pos+1] << 4);
Sample s2(buf[pos+2] << 4, buf[pos+3] << 4);
Sample s3(buf[pos+4] << 4, buf[pos+5] << 4);
Sample s4(buf[pos+6] << 4, buf[pos+7] << 4);
Sample s5(buf[pos+8] << 4, buf[pos+9] << 4);
Sample s6(buf[pos+10] << 4, buf[pos+11] << 4);
Sample s7(buf[pos+12] << 4, buf[pos+13] << 4);
Sample s8(buf[pos+14] << 4, buf[pos+15] << 4);
Sample s9(buf[pos+16] << 4, buf[pos+17] << 4);
Sample s10(buf[pos+18] << 4, buf[pos+19] << 4);
Sample s11(buf[pos+20] << 4, buf[pos+21] << 4);
Sample s12(buf[pos+22] << 4, buf[pos+23] << 4);
Sample s13(buf[pos+24] << 4, buf[pos+25] << 4);
Sample s14(buf[pos+26] << 4, buf[pos+27] << 4);
Sample s15(buf[pos+28] << 4, buf[pos+29] << 4);
Sample s16(buf[pos+30] << 4, buf[pos+31] << 4);
m_decimator2.myDecimate(&s1, &s2);
m_decimator2.myDecimate(&s3, &s4);
m_decimator2.myDecimate(&s5, &s6);
m_decimator2.myDecimate(&s7, &s8);
m_decimator2.myDecimate(&s9, &s10);
m_decimator2.myDecimate(&s11, &s12);
m_decimator2.myDecimate(&s13, &s14);
m_decimator2.myDecimate(&s15, &s16);
m_decimator4.myDecimate(&s2, &s4);
m_decimator4.myDecimate(&s6, &s8);
m_decimator4.myDecimate(&s10, &s12);
m_decimator4.myDecimate(&s14, &s16);
m_decimator8.myDecimate(&s4, &s8);
m_decimator8.myDecimate(&s12, &s16);
m_decimator16.myDecimate(&s8, &s16);
**it = s16;
(*it)++;
}
}
void BladerfThread::decimate32_cen(SampleVector::iterator* it, const qint16* buf, qint32 len)
{
for (int pos = 0; pos < len - 63; pos += 64) {
Sample s1(buf[pos+0] << 4, buf[pos+1] << 4);
Sample s2(buf[pos+2] << 4, buf[pos+3] << 4);
Sample s3(buf[pos+4] << 4, buf[pos+5] << 4);
Sample s4(buf[pos+6] << 4, buf[pos+7] << 4);
Sample s5(buf[pos+8] << 4, buf[pos+9] << 4);
Sample s6(buf[pos+10] << 4, buf[pos+11] << 4);
Sample s7(buf[pos+12] << 4, buf[pos+13] << 4);
Sample s8(buf[pos+14] << 4, buf[pos+15] << 4);
Sample s9(buf[pos+16] << 4, buf[pos+17] << 4);
Sample s10(buf[pos+18] << 4, buf[pos+19] << 4);
Sample s11(buf[pos+20] << 4, buf[pos+21] << 4);
Sample s12(buf[pos+22] << 4, buf[pos+23] << 4);
Sample s13(buf[pos+24] << 4, buf[pos+25] << 4);
Sample s14(buf[pos+26] << 4, buf[pos+27] << 4);
Sample s15(buf[pos+28] << 4, buf[pos+29] << 4);
Sample s16(buf[pos+30] << 4, buf[pos+31] << 4);
Sample s17(buf[pos+32] << 4, buf[pos+33] << 4);
Sample s18(buf[pos+34] << 4, buf[pos+35] << 4);
Sample s19(buf[pos+36] << 4, buf[pos+37] << 4);
Sample s20(buf[pos+38] << 4, buf[pos+39] << 4);
Sample s21(buf[pos+40] << 4, buf[pos+41] << 4);
Sample s22(buf[pos+42] << 4, buf[pos+43] << 4);
Sample s23(buf[pos+44] << 4, buf[pos+45] << 4);
Sample s24(buf[pos+46] << 4, buf[pos+47] << 4);
Sample s25(buf[pos+48] << 4, buf[pos+49] << 4);
Sample s26(buf[pos+50] << 4, buf[pos+51] << 4);
Sample s27(buf[pos+52] << 4, buf[pos+53] << 4);
Sample s28(buf[pos+54] << 4, buf[pos+55] << 4);
Sample s29(buf[pos+56] << 4, buf[pos+57] << 4);
Sample s30(buf[pos+58] << 4, buf[pos+59] << 4);
Sample s31(buf[pos+60] << 4, buf[pos+61] << 4);
Sample s32(buf[pos+62] << 4, buf[pos+63] << 4);
m_decimator2.myDecimate(&s1, &s2);
m_decimator2.myDecimate(&s3, &s4);
m_decimator2.myDecimate(&s5, &s6);
m_decimator2.myDecimate(&s7, &s8);
m_decimator2.myDecimate(&s9, &s10);
m_decimator2.myDecimate(&s11, &s12);
m_decimator2.myDecimate(&s13, &s14);
m_decimator2.myDecimate(&s15, &s16);
m_decimator2.myDecimate(&s17, &s18);
m_decimator2.myDecimate(&s19, &s20);
m_decimator2.myDecimate(&s21, &s22);
m_decimator2.myDecimate(&s23, &s24);
m_decimator2.myDecimate(&s25, &s26);
m_decimator2.myDecimate(&s27, &s28);
m_decimator2.myDecimate(&s29, &s30);
m_decimator2.myDecimate(&s31, &s32);
m_decimator4.myDecimate(&s2, &s4);
m_decimator4.myDecimate(&s6, &s8);
m_decimator4.myDecimate(&s10, &s12);
m_decimator4.myDecimate(&s14, &s16);
m_decimator4.myDecimate(&s18, &s20);
m_decimator4.myDecimate(&s22, &s24);
m_decimator4.myDecimate(&s26, &s28);
m_decimator4.myDecimate(&s30, &s32);
m_decimator8.myDecimate(&s4, &s8);
m_decimator8.myDecimate(&s12, &s16);
m_decimator8.myDecimate(&s20, &s24);
m_decimator8.myDecimate(&s28, &s32);
m_decimator16.myDecimate(&s8, &s16);
m_decimator16.myDecimate(&s24, &s32);
m_decimator32.myDecimate(&s16, &s32);
**it = s32;
(*it)++;
}
}
void BladerfThread::decimate4(SampleVector::iterator* it, const qint16* buf, qint32 len)
{
qint16 xreal, yimag;
for (int pos = 0; pos < len - 7; pos += 8) {
for (int pos = 0; pos < len - 7; pos += 8) {
xreal = buf[pos+0] - buf[pos+3] + buf[pos+7] - buf[pos+4];
yimag = buf[pos+1] - buf[pos+5] + buf[pos+2] - buf[pos+6];
Sample s( xreal << 2, yimag << 2 ); // was shift 3
@@ -402,6 +572,29 @@ void BladerfThread::callback(const qint16* buf, qint32 len)
break;
}
}
else if (m_fcPos == 2) // Center
{
switch (m_log2Decim)
{
case 1:
decimate2_cen(&it, buf, len);
break;
case 2:
decimate4_cen(&it, buf, len);
break;
case 3:
decimate8_cen(&it, buf, len);
break;
case 4:
decimate16_cen(&it, buf, len);
break;
case 5:
decimate32_cen(&it, buf, len);
break;
default:
break;
}
}
}