ByteStream class

src/xenia/base/byte_stream.cc

@@ -0,0 +1,39 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2015 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/base/byte_stream.h"
+
+#include "xenia/base/assert.h"
+
+namespace xe {
+
+ByteStream::ByteStream(uint8_t* data, size_t data_length, size_t offset)
+    : data_(data), data_length_(data_length), offset_(offset) {}
+
+ByteStream::~ByteStream() = default;
+
+void ByteStream::Advance(size_t num_bytes) {
+  offset_ += num_bytes;
+}
+
+void ByteStream::Read(uint8_t* buf, size_t len) {
+  assert_true(offset_ < data_length_);
+
+  std::memcpy(buf, data_ + offset_, len);
+  Advance(len);
+}
+
+void ByteStream::Write(const uint8_t* buf, size_t len) {
+  assert_true(offset_ < data_length_);
+
+  std::memcpy(data_ + offset_, buf, len);
+  Advance(len);
+}
+
+}  // namespace xe