Make a debug.raw with detected pulses.

diff --git a/decode.cpp b/decode.cpp
index 1a5ee74856c5c635e37ea434213307114964be6c..fdc1347e0e124a7297ab4c6ef4a71e644c58f0fd 100644 (file)
--- a/decode.cpp
+++ b/decode.cpp
@@ -3,6 +3,7 @@
 #include <math.h>
 #include <unistd.h>
 #include <assert.h>
+#include <limits.h>
 #include <vector>
 #include <algorithm>
 
@@ -189,4 +190,20 @@ int main(int argc, char **argv)
 
        fwrite(&hdr, sizeof(hdr), 1, stdout);
        fwrite(tap_data.data(), tap_data.size(), 1, stdout);
+
+       // Output a debug raw file with pulse detection points.
+       fp = fopen("debug.raw", "wb");
+       short one = 32767;
+       short zero = 0;
+       unsigned pulsenum = 0;
+       for (unsigned i = 0; i < pcm.size(); ++i) {
+               unsigned next_pulse = (pulsenum >= pulses.size()) ? INT_MAX : int(pulses[pulsenum].time * SAMPLE_RATE);
+               if (i >= next_pulse) {
+                       fwrite(&one, sizeof(one), 1, fp);
+                       ++pulsenum;
+               } else {
+                       fwrite(&zero, sizeof(zero), 1, fp);
+               }
+       }
+       fclose(fp);
 }