Mooooore performance

hackrf_source/src/main.cpp

@@ -361,10 +361,7 @@ private:
         HackRFSourceModule* _this = (HackRFSourceModule*)transfer->rx_ctx;
         int count = transfer->valid_length / 2;
         int8_t* buffer = (int8_t*)transfer->buffer;
-        for (int i = 0; i < count; i++) {
-            _this->stream.writeBuf[i].re = (float)buffer[i * 2] / 128.0f;
-            _this->stream.writeBuf[i].im = (float)buffer[(i * 2) + 1] / 128.0f;
-        }
+        volk_8i_s32f_convert_32f((float*)_this->stream.writeBuf, buffer, 128.0f, count*2);
         if (!_this->stream.swap(count)) { return -1; }
         return 0;
     }

plutosdr_source/src/main.cpp

@@ -235,6 +235,9 @@ private:
                 _this->stream.writeBuf[i].re = (float)buf[i * 2] / 32768.0f;
                 _this->stream.writeBuf[i].im = (float)buf[(i * 2) + 1] / 32768.0f;
             }
+
+            volk_16i_s32f_convert_32f((float*)_this->stream.writeBuf, buf, 32768.0f, blockSize*2);
+
             if (!_this->stream.swap(blockSize)) { break; };
         }
 

recorder/src/main.cpp

@@ -313,20 +313,14 @@ private:
 
     static void _audioHandler(dsp::stereo_t *data, int count, void *ctx) {
         RecorderModule* _this = (RecorderModule*)ctx;
-        for (int i = 0; i < count; i++) {
-            _this->wavSampleBuf[(2*i)] = std::clamp<int>(data[i].l * 32767.0f, -32768, 32767);
-            _this->wavSampleBuf[(2*i) + 1] = std::clamp<int>(data[i].r * 32767.0f, -32768, 32767);
-        }
+        volk_32f_s32f_convert_16i(_this->wavSampleBuf, (float*)data, 32767.0f, count*2);
         _this->audioWriter->writeSamples(_this->wavSampleBuf, count * 2 * sizeof(int16_t));
         _this->samplesWritten += count;
     }
 
     static void _basebandHandler(dsp::complex_t *data, int count, void *ctx) {
         RecorderModule* _this = (RecorderModule*)ctx;
-        for (int i = 0; i < count; i++) {
-            _this->wavSampleBuf[(2*i)] = data[i].re * 32767.0f;
-            _this->wavSampleBuf[(2*i) + 1] = data[i].im * 32767.0f;
-        }
+        volk_32f_s32f_convert_16i(_this->wavSampleBuf, (float*)data, 32767.0f, count*2);
         _this->basebandWriter->writeSamples(_this->wavSampleBuf, count * 2 * sizeof(int16_t));
         _this->samplesWritten += count;
     }

sdrplay_source/src/main.cpp

@@ -913,6 +913,7 @@ private:
     static void streamCB(short *xi, short *xq, sdrplay_api_StreamCbParamsT *params,
                         unsigned int numSamples, unsigned int reset, void *cbContext) {
         SDRPlaySourceModule* _this = (SDRPlaySourceModule*)cbContext;
+        // TODO: Optimise using volk and math
         if (!_this->running) { return; }
         for (int i = 0; i < numSamples; i++) {
             int id = _this->bufferIndex++;