init

lib_audio_dsp/test/signal_chain/src/crossfader.c

@@ -0,0 +1,61 @@
+// Copyright 2024-2025 XMOS LIMITED.
+// This Software is subject to the terms of the XMOS Public Licence: Version 1.
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include "dsp/adsp.h"
+
+FILE * _fopen(char * fname, char* mode) {
+  FILE * fp = fopen(fname, mode);
+  if (fp == NULL)
+  {
+    printf("Error opening a file\n");
+    exit(1);
+  }
+  return fp;
+}
+
+int main()
+{
+  int32_t gains[4] = {0};
+  int32_t slew = 0;
+
+  FILE * in = _fopen("../sig_48k.bin", "rb");
+  FILE * in1 = _fopen("../sig1_48k.bin", "rb");
+  FILE * out = _fopen("sig_out.bin", "wb");
+  FILE * gain = _fopen("gain.bin", "rb");
+
+
+  fseek(in, 0, SEEK_END);
+  int in_len = ftell(in) / sizeof(int32_t);
+  fseek(in, 0, SEEK_SET);
+
+  fread(&slew, sizeof(int32_t), 1, gain);
+  fread(gains, sizeof(int32_t), 4, gain);
+  fclose(gain);
+
+  printf("gains: %ld %ld\n", gains[0], gains[1]);
+
+  crossfader_slew_t cfs = {.gain_1.gain=gains[0], .gain_1.target_gain=gains[2], .gain_1.slew_shift=slew,
+                           .gain_2.gain=gains[1], .gain_2.target_gain=gains[3], .gain_2.slew_shift=slew,
+                           .mix=0};
+
+  for (unsigned i = 0; i < in_len; i++)
+  {
+    int32_t samp = 0, samp1 = 0, samp_out = 0;
+    fread(&samp, sizeof(int32_t), 1, in);
+    fread(&samp1, sizeof(int32_t), 1, in1);
+    //printf("%ld ", samp);
+    samp_out = adsp_crossfader_slew(&cfs, samp, samp1);
+    //printf("%ld ", samp_out);
+    fwrite(&samp_out, sizeof(int32_t), 1, out);
+  }
+
+
+  fclose(in);
+  fclose(in1);
+  fclose(out);
+
+  return 0;
+}