Add cycle benchmarking support
This enables benchmarking of the codec. It will print
the amount of CPU cycles needed for encoding/decoding a single
20ms frame on average.
diff --git a/contrib/benchmark.sh b/contrib/benchmark.sh
new file mode 100755
index 0000000..0148667
--- /dev/null
+++ b/contrib/benchmark.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+GAPK=./src/gapk
+PCMFILE=$1
+BASE=`basename $PCMFILE`
+
+echo
+echo Encoder Benchmark:
+$GAPK -i "$PCMFILE" -f rawpcm-s16le -o "$BASE.fr" -g gsm
+$GAPK -i "$PCMFILE" -f rawpcm-s16le -o "$BASE.efr" -g amr-efr
+$GAPK -i "$PCMFILE" -f rawpcm-s16le -o "$BASE.hr" -g ti-hr
+
+echo
+echo Decoder Benchmark:
+$GAPK -i "$BASE.fr" -g rawpcm-s16le -o /dev/null -f gsm
+$GAPK -i "$BASE.efr" -g rawpcm-s16le -o /dev/null -f amr-efr
+$GAPK -i "$BASE.hr" -g rawpcm-s16le -o /dev/null -f ti-hr