From 8380e406e1a938b7c980696895809691544425f3 Mon Sep 17 00:00:00 2001
From: Moritz Bunkus <moritz@bunkus.org>
Date: Sun, 14 Apr 2013 11:50:45 +0200
Subject: [PATCH] mm_io_c: add read_int64_be()

---
 src/common/mm_io.cpp | 5 +++++
 src/common/mm_io.h   | 1 +
 2 files changed, 6 insertions(+)

diff --git a/src/common/mm_io.cpp b/src/common/mm_io.cpp
index 0d59ca2f0..97b2090dc 100644
--- a/src/common/mm_io.cpp
+++ b/src/common/mm_io.cpp
@@ -355,6 +355,11 @@ mm_io_c::read_uint16_be() {
   return get_uint16_be(buffer);
 }
 
+int32_t
+mm_io_c::read_int24_be() {
+  return (static_cast<int32_t>(read_uint24_be()) + 0xff800000) ^ 0xff800000;
+}
+
 uint32_t
 mm_io_c::read_uint24_be() {
   unsigned char buffer[3];
diff --git a/src/common/mm_io.h b/src/common/mm_io.h
index 8c6e296ef..81b6e5516 100644
--- a/src/common/mm_io.h
+++ b/src/common/mm_io.h
@@ -53,6 +53,7 @@ public:
   virtual uint32_t read_uint32_le();
   virtual uint64_t read_uint64_le();
   virtual uint16_t read_uint16_be();
+  virtual int32_t read_int24_be();
   virtual uint32_t read_uint24_be();
   virtual uint32_t read_uint32_be();
   virtual uint64_t read_uint64_be();