commit b31459f962a4c6c1724cfb8142176bc502276de1
Author: ugrnm <ultrageranium@bleu255.com>
Date:   Tue Sep 17 11:56:03 2019 +0200

    script to automate sample.h creation

diff --git a/utils/samplify.sh b/utils/samplify.sh
new file mode 100755
index 0000000..1ab1692
--- /dev/null
+++ b/utils/samplify.sh
@@ -0,0 +1,28 @@
+#!/bin/sh
+# Prepares a sample.h file
+# sed not used, should just werk (TM) everywhere
+# Usage: ./samplify.sh my_sample.wav
+# Or you can install samplify.sh in your ~/bin and call it
+# from anywhere you like
+
+# Convert original soundfile and create sample.h
+# A temp file is needed otherwise xxd is unable to generate 
+# sample length information?
+# Need to fix that later...
+sox "${1}" -t u8 -c 1 -r 8000 /tmp/sample.wav
+xxd -i /tmp/sample.wav > sample.h
+rm /tmp/sample.wav
+
+# Extract sample length
+SAMPLE_LEN=$(tail -1 sample.h | cut -d ' ' -f 5 | tr -d ';')
+
+# Inject SAMPLE_LEN in new file header
+NEW_HEADER="#define SAMPLE_RATE 8000
+const int sound_length=${SAMPLE_LEN};
+const unsigned char sound_data[] PROGMEM= {"
+
+# Remove first line of sample.h
+echo "$(tail -n +2 sample.h)" > sample.h
+
+# Prepend new header to sample.h
+echo "$(echo "${NEW_HEADER}"; cat sample.h)" > sample.h