From: Martin Mares <mj@ucw.cz>
Date: Wed, 10 Jul 2019 08:15:05 +0000 (+0200)
Subject: ir-remote
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=fd1245f652ddae7123a2872cfd1251d5c25263fb;p=home-hw.git

ir-remote
---

diff --git a/ir-remote/Makefile b/ir-remote/Makefile
new file mode 100644
index 0000000..6c8a968
--- /dev/null
+++ b/ir-remote/Makefile
@@ -0,0 +1,8 @@
+PC := pkg-config
+UCW_CFLAGS := $(shell $(PC) --cflags libucw)
+UCW_LDFLAGS := $(shell $(PC) --libs libucw)
+
+CFLAGS=-std=gnu99 -Wall -Wextra -Wno-parentheses $(UCW_CFLAGS)
+LDFLAGS=$(UCW_LDFLAGS)
+
+all: decode
diff --git a/ir-remote/decode.c b/ir-remote/decode.c
new file mode 100644
index 0000000..1abe049
--- /dev/null
+++ b/ir-remote/decode.c
@@ -0,0 +1,55 @@
+#include <ucw/lib.h>
+#include <ucw/fastbuf.h>
+#include <ucw/unaligned.h>
+
+#include <stdio.h>
+
+int main(void)
+{
+	struct fastbuf *f = bfdopen_shared(0, 4096);
+
+	byte hdr[48];
+	breadb(f, hdr, sizeof(hdr));
+
+	uint i = 0;
+	int last = -1;
+	uint lasti = 0;
+	for (;;) {
+		byte x[2];
+		if (!bread(f, x, 2))
+			break;
+		int a = (s16) get_u16_le(x);
+		int boo = (a >= 8000);
+		if (boo != last) {
+			if (last >= 0) {
+				uint len = i - lasti;
+#if 0
+				printf("%d\t%d\t%6.3f\n", last, len, (double)len / 44100 * 1000);
+#else
+				if (!last) {
+					if (len > 2000) {
+						putchar('\n');
+					} else if (len >= 26 && len <= 32) {
+					} else {
+						printf("<%d>", len);
+					}
+				} else {
+					if (len >= 18 && len <= 24) {
+						putchar('0');
+					} else if (len >= 68 && len <= 72) {
+						putchar('1');
+					} else if (len >= 194 && len <= 200) {
+						putchar('^');
+					} else {
+						printf("[%d]", len);
+					}
+				}
+#endif
+			}
+			last = boo;
+			lasti = i;
+		}
+		i++;
+	}
+	putchar('\n');
+}