small tool to debug .peak files

nmains · Jan 12, 2015 · bb75553 · bb75553
1 parent b8bec75
commit bb75553
Showing 1 changed file with 49 additions and 0 deletions.
diff --git a/tools/peakdump.c b/tools/peakdump.c
@@ -0,0 +1,49 @@
+// 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;
+}