1 /* This Source Code Form is subject to the terms of the Mozilla Public
2  * License, v. 2.0. If a copy of the MPL was not distributed with this
3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
4 
5 #ifndef STREAM_H_
6 #define STREAM_H_
7 
8 #include "DecoderDoctorLogger.h"
9 #include "nsISupportsImpl.h"
10 
11 namespace mozilla {
12 
13 DDLoggedTypeDeclName(ByteStream);
14 
15 class ByteStream : public DecoderDoctorLifeLogger<ByteStream> {
16  public:
17   NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ByteStream);
18 
19   virtual bool ReadAt(int64_t offset, void* data, size_t size,
20                       size_t* bytes_read) = 0;
21   virtual bool CachedReadAt(int64_t offset, void* data, size_t size,
22                             size_t* bytes_read) = 0;
23   virtual bool Length(int64_t* size) = 0;
24 
DiscardBefore(int64_t offset)25   virtual void DiscardBefore(int64_t offset) {}
26 
27  protected:
~ByteStream()28   virtual ~ByteStream() {}
29 };
30 
31 }  // namespace mozilla
32 
33 #endif
34