initial

1 files changed, 19 insertions, 0 deletions

diff --git a/fmdriver/fmdriver_common.h b/fmdriver/fmdriver_common.h
new file mode 100644
index 0000000..cd804b8
--- /dev/null
+++ b/fmdriver/fmdriver_common.h
@@ -0,0 +1,19 @@
+#ifndef MYON_FMDRIVER_COMMON_H_INCLUDED
+#define MYON_FMDRIVER_COMMON_H_INCLUDED
+
+static inline uint16_t read16le(const uint8_t *ptr) {
+  return (unsigned)ptr[0] | (((unsigned)ptr[1])<<8);
+}
+
+static inline int16_t u8s16(uint8_t v) {
+  return (v & 0x80) ? ((int16_t)v)-0x100 : v;
+}
+
+static inline int16_t u16s16(uint16_t v) {
+  return (v & 0x8000) ? ((int32_t)v)-0x10000 : v;
+}
+
+#include <stdio.h>
+#define FMDRIVER_DEBUG(...) fprintf(stderr, __VA_ARGS__)
+
+#endif // MYON_FMDRIVER_COMMON_H_INCLUDED