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livetrax/tools/peakdump.c

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C
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2015-01-12 14:45:34 -05:00
// gcc -o peakdump peakdump.c -Wall -O3 -lm
// inspect ardour .peak files
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#define _FPP 256
int main (int argc, char **argv) {
int c = 0, d = 0;
float thresh = -1.f;
if (argc < 2 || argc > 3) {
fprintf(stderr, "usage: %s [threshold] <peakfile>\n", argv[0]);
return -1;
}
if (argc == 3) {
thresh = atof(argv[1]);
}
FILE *F = fopen(argv[argc-1], "r");
if (!F) {
fprintf(stderr, "Cannot open file '%s'\n", argv[argc-1]);
return -1;
}
printf(" # ) audio sample range : MIN MAX\n");
while (!feof(F)) {
struct PeakData {
float min;
float max;
} buf;
if (fread(&buf, sizeof(struct PeakData), 1, F) <= 0) {
break;
}
if (fabsf(buf.min) > thresh || fabsf(buf.max) > thresh) {
printf("%8d) %10d - %10d: %+.3f %+.3f\n", ++d,
_FPP * c, _FPP * (c + 1) - 1,
buf.min, buf.max);
}
++c;
}
fclose(F);
return 0;
}