Move MemoryStream to separate source files, and to a test target.
Also delete the base class MemoryStreamBase.
Bug: webrtc:6424
Change-Id: I7eec40ecff17c7c65fdf55882bccb2abaf1d5d84
Reviewed-on: https://webrtc-review.googlesource.com/c/108622
Commit-Queue: Niels Moller <nisse@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25494}diff --git a/rtc_base/memory_stream.h b/rtc_base/memory_stream.h
new file mode 100644
index 0000000..936f71b
--- /dev/null
+++ b/rtc_base/memory_stream.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2018 The WebRTC Project Authors. All rights reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef RTC_BASE_MEMORY_STREAM_H_
+#define RTC_BASE_MEMORY_STREAM_H_
+
+#include "rtc_base/stream.h"
+
+namespace rtc {
+
+// MemoryStream dynamically resizes to accomodate written data.
+
+class MemoryStream final : public StreamInterface {
+ public:
+ MemoryStream();
+ explicit MemoryStream(const char* data); // Calls SetData(data, strlen(data))
+ MemoryStream(const void* data, size_t length); // Calls SetData(data, length)
+ ~MemoryStream() override;
+
+ StreamState GetState() const override;
+ StreamResult Read(void* buffer,
+ size_t bytes,
+ size_t* bytes_read,
+ int* error) override;
+ StreamResult Write(const void* buffer,
+ size_t bytes,
+ size_t* bytes_written,
+ int* error) override;
+ void Close() override;
+ bool SetPosition(size_t position) override;
+ bool GetPosition(size_t* position) const override;
+ bool GetSize(size_t* size) const override;
+ bool ReserveSize(size_t size) override;
+
+ char* GetBuffer() { return buffer_; }
+ const char* GetBuffer() const { return buffer_; }
+
+ void SetData(const void* data, size_t length);
+
+ private:
+ StreamResult DoReserve(size_t size, int* error);
+
+ // Invariant: 0 <= seek_position <= data_length_ <= buffer_length_
+ char* buffer_ = nullptr;
+ size_t buffer_length_ = 0;
+ size_t data_length_ = 0;
+ size_t seek_position_ = 0;
+};
+
+} // namespace rtc
+
+#endif // RTC_BASE_MEMORY_STREAM_H_