# HG changeset patch
# User Mychaela Falconia <falcon@freecalypso.org>
# Date 1715483723 0
# Node ID 3eb407b08b4c9033c30194ce2e5c83e45ed7485e
# Parent  f5f541bc9415a7accdccd9305e139098939c97e6
pcmu2efr: confirm that we got 280 distinct outputs so far

diff -r f5f541bc9415 -r 3eb407b08b4c .hgignore
--- a/.hgignore	Sun May 12 03:06:12 2024 +0000
+++ b/.hgignore	Sun May 12 03:15:23 2024 +0000
@@ -10,6 +10,7 @@
 ^dmw/dmw-[au]law\.
 
 ^pcmu2efr/amrefr-out$
+^pcmu2efr/comb-diff$
 ^pcmu2efr/dhf-check$
 ^pcmu2efr/stdefr-diff$
 ^pcmu2efr/stdefr-out$
diff -r f5f541bc9415 -r 3eb407b08b4c pcmu2efr/Makefile
--- a/pcmu2efr/Makefile	Sun May 12 03:06:12 2024 +0000
+++ b/pcmu2efr/Makefile	Sun May 12 03:15:23 2024 +0000
@@ -1,8 +1,10 @@
 CC=	gcc
 CFLAGS=	-O2
-PROGS=	amrefr-out dhf-check stdefr-diff stdefr-out
+PROGS=	amrefr-out comb-diff dhf-check stdefr-diff stdefr-out
 
 AMREFR_OBJS=	amrefr-out.o gen-amrefr.o gen160.o seqsyncu.o ulaw-expand.o
+COMB_DIFF_OBJS=	comb-diff.o gen-amrefr.o gen-efr.o gen160.o seqsyncu.o \
+		ulaw-expand.o
 DHF_CHECK_OBJS=	dhf-check.o gen-amrefr.o gen-efr.o gen160.o seqsyncu.o \
 		ulaw-expand.o
 STDEFR_OBJS=	gen-efr.o gen160.o seqsyncu.o stdefr-out.o ulaw-expand.o
@@ -13,6 +15,9 @@
 amrefr-out:	${AMREFR_OBJS}
 	${CC} ${CFLAGS} -o $@ ${AMREFR_OBJS} -lgsmefr -ltwamr
 
+comb-diff:	${COMB_DIFF_OBJS}
+	${CC} ${CFLAGS} -o $@ ${COMB_DIFF_OBJS} -lgsmefr -ltwamr
+
 dhf-check:	${DHF_CHECK_OBJS}
 	${CC} ${CFLAGS} -o $@ ${DHF_CHECK_OBJS} -lgsmefr -ltwamr
 
diff -r f5f541bc9415 -r 3eb407b08b4c pcmu2efr/comb-diff.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pcmu2efr/comb-diff.c	Sun May 12 03:15:23 2024 +0000
@@ -0,0 +1,35 @@
+/*
+ * This program computes 160 possible EFR encoder outputs using standard EFR,
+ * then 120 possible outputs using "simple" AMR-EFR, then does a diff
+ * among them, seeking to verify that they are all distinct.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+
+extern uint8_t standard_efr[160][31];
+extern uint8_t amr_efr[160][31];
+
+main(argc, argv)
+	char **argv;
+{
+	uint8_t combine[320][31];
+	unsigned m, n;
+
+	generate_linear_inputs();
+	generate_std_efr();
+	generate_amr_efr();
+	bcopy(standard_efr, combine, 160*31);
+	bcopy(amr_efr, combine + 160, 160*31);
+	for (m = 0; m < 279; m++) {
+		for (n = m + 1; n < 280; n++) {
+			if (!memcmp(combine[m], combine[n], 31))
+				printf("Bad: sequences #%u and #%u are equal\n",
+					m, n);
+		}
+	}
+	exit(0);
+}