1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef ANDROID_WEBVIEW_NATIVE_INPUT_STREAM_H_
6#define ANDROID_WEBVIEW_NATIVE_INPUT_STREAM_H_
7
8#include "android_webview/browser/input_stream.h"
9#include "base/android/scoped_java_ref.h"
10#include "base/compiler_specific.h"
11
12namespace net {
13class IOBuffer;
14}
15
16namespace android_webview {
17
18class InputStreamImpl : public InputStream {
19 public:
20  // Maximum size of |buffer_|.
21  static const int kBufferSize;
22
23  static const InputStreamImpl* FromInputStream(
24      const InputStream* input_stream);
25
26  // |stream| should be an instance of the InputStream Java class.
27  // |stream| can't be null.
28  InputStreamImpl(const base::android::JavaRef<jobject>& stream);
29  virtual ~InputStreamImpl();
30
31  // Gets the underlying Java object. Guaranteed non-NULL.
32  const jobject jobj() const { return jobject_.obj(); }
33
34  // InputStream implementation.
35  virtual bool BytesAvailable(int* bytes_available) const OVERRIDE;
36  virtual bool Skip(int64_t n, int64_t* bytes_skipped) OVERRIDE;
37  virtual bool Read(net::IOBuffer* dest, int length, int* bytes_read) OVERRIDE;
38 protected:
39  // Parameterless constructor exposed for testing.
40  InputStreamImpl();
41
42 private:
43  base::android::ScopedJavaGlobalRef<jobject> jobject_;
44  base::android::ScopedJavaGlobalRef<jbyteArray> buffer_;
45
46  DISALLOW_COPY_AND_ASSIGN(InputStreamImpl);
47};
48
49bool RegisterInputStream(JNIEnv* env);
50
51} // namespace android_webview
52
53#endif //  ANDROID_WEBVIEW_NATIVE_INPUT_STREAM_H_
54