1 files changed, 45 insertions, 0 deletions
diff --git a/media/libstagefright/Utils.cpp b/media/libstagefright/Utils.cpp
new file mode 100644
index 0000000..2720f93
--- /dev/null
+++ b/media/libstagefright/Utils.cpp
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <arpa/inet.h>
+
+#include <media/stagefright/Utils.h>
+
+namespace android {
+
+uint16_t U16_AT(const uint8_t *ptr) {
+    return ptr[0] << 8 | ptr[1];
+}
+
+uint32_t U32_AT(const uint8_t *ptr) {
+    return ptr[0] << 24 | ptr[1] << 16 | ptr[2] << 8 | ptr[3];
+}
+
+uint64_t U64_AT(const uint8_t *ptr) {
+    return ((uint64_t)U32_AT(ptr)) << 32 | U32_AT(ptr + 4);
+}
+
+// XXX warning: these won't work on big-endian host.
+uint64_t ntoh64(uint64_t x) {
+    return ((uint64_t)ntohl(x & 0xffffffff) << 32) | ntohl(x >> 32);
+}
+
+uint64_t hton64(uint64_t x) {
+    return ((uint64_t)htonl(x & 0xffffffff) << 32) | htonl(x >> 32);
+}
+
+}  // namespace android
+