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fix hermes lite buffering

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AlexandreRouma 2024-01-25 23:28:03 +01:00
parent 255988ee46
commit f5adc7c587
2 changed files with 31 additions and 14 deletions
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28
source_modules/hermes_source/src/hermes.cpp
View File

@ -2,6 +2,13 @@
#include <utils/flog.h>
namespace hermes {
const int SAMPLERATE_LIST[] = {
48000,
96000,
192000,
384000
};
Client::Client(std::shared_ptr<net::Socket> sock) {
this->sock = sock;
@ -33,6 +40,7 @@ namespace hermes {
void Client::setSamplerate(HermesLiteSamplerate samplerate) {
writeReg(0, (uint32_t)samplerate << 24);
blockSize = SAMPLERATE_LIST[samplerate] / 200;
}
void Client::setFrequency(double freq) {
@ -157,6 +165,8 @@ namespace hermes {
void Client::worker() {
uint8_t rbuf[2048];
MetisUSBPacket* pkt = (MetisUSBPacket*)rbuf;
int sampleCount = 0;
while (true) {
// Wait for a packet or exit if connection closed
int len = sock->recv(rbuf, 2048);
@ -183,9 +193,10 @@ namespace hermes {
flog::warn("Got response! Reg={0}, Seq={1}", reg, (uint32_t)htonl(pkt->seq));
}
// Decode and send IQ to stream
// Decode and save IQ to buffer
uint8_t* iq = &frame[8];
for (int i = 0; i < 63; i++) {
dsp::complex_t* writeBuf = &out.writeBuf[sampleCount];
for (int i = 0; i < HERMES_SAMPLES_PER_FRAME; i++) {
// Convert to 32bit
int32_t si = ((uint32_t)iq[(i*8) + 0] << 16) | ((uint32_t)iq[(i*8) + 1] << 8) | (uint32_t)iq[(i*8) + 2];
int32_t sq = ((uint32_t)iq[(i*8) + 3] << 16) | ((uint32_t)iq[(i*8) + 4] << 8) | (uint32_t)iq[(i*8) + 5];
@ -195,11 +206,16 @@ namespace hermes {
sq = (sq << 8) >> 8;
// Convert to float (IQ swapped for some reason)
out.writeBuf[i].im = (float)si / (float)0x1000000;
out.writeBuf[i].re = (float)sq / (float)0x1000000;
writeBuf[i].im = (float)si / (float)0x1000000;
writeBuf[i].re = (float)sq / (float)0x1000000;
}
sampleCount += HERMES_SAMPLES_PER_FRAME;
// If enough samples are in the buffer, send to stream
if (sampleCount >= blockSize) {
out.swap(sampleCount);
sampleCount = 0;
}
out.swap(63);
// TODO: Buffer the data to avoid having a very high DSP frame rate
}
}
}

17
source_modules/hermes_source/src/hermes.h
View File

@ -7,11 +7,12 @@
#include <string>
#include <thread>
#define HERMES_METIS_REPEAT 5
#define HERMES_METIS_TIMEOUT 1000
#define HERMES_METIS_SIGNATURE 0xEFFE
#define HERMES_HPSDR_USB_SYNC 0x7F
#define HERMES_I2C_DELAY 50
#define HERMES_METIS_REPEAT 5
#define HERMES_METIS_TIMEOUT 1000
#define HERMES_METIS_SIGNATURE 0xEFFE
#define HERMES_HPSDR_USB_SYNC 0x7F
#define HERMES_I2C_DELAY 50
#define HERMES_SAMPLES_PER_FRAME 63
namespace hermes {
enum MetisPacketType {
@ -140,7 +141,7 @@ namespace hermes {
dsp::stream<dsp::complex_t> out;
//private:
private:
void sendMetisUSB(uint8_t endpoint, void* frame0, void* frame1 = NULL);
void sendMetisControl(MetisControl ctrl);
@ -149,12 +150,12 @@ namespace hermes {
void writeI2C(I2CPort port, uint8_t addr, uint8_t reg, uint8_t data);
void worker();
double freq = 0;
int blockSize = 63;
std::thread workerThread;
std::shared_ptr<net::Socket> sock;
uint32_t usbSeq = 0;