1 // Copyright 2012 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef MEDIA_FILTERS_FILE_DATA_SOURCE_H_
6 #define MEDIA_FILTERS_FILE_DATA_SOURCE_H_
10 #include "base/files/file.h"
11 #include "base/files/file_path.h"
12 #include "base/files/memory_mapped_file.h"
13 #include "media/base/data_source.h"
17 // Basic data source that treats the URL as a file path, and uses the file
18 // system to read data for a media pipeline.
19 class MEDIA_EXPORT FileDataSource : public DataSource {
23 FileDataSource(const FileDataSource&) = delete;
24 FileDataSource& operator=(const FileDataSource&) = delete;
26 ~FileDataSource() override;
28 [[nodiscard]] bool Initialize(const base::FilePath& file_path);
29 [[nodiscard]] bool Initialize(base::File file);
31 // Implementation of DataSource.
33 void Abort() override;
34 void Read(int64_t position,
37 DataSource::ReadCB read_cb) override;
38 [[nodiscard]] bool GetSize(int64_t* size_out) override;
39 bool IsStreaming() override;
40 void SetBitrate(int bitrate) override;
41 bool PassedTimingAllowOriginCheck() final;
42 bool WouldTaintOrigin() final;
44 // Unit test helpers. Recreate the object if you want the default behaviour.
45 void force_read_errors_for_testing() { force_read_errors_ = true; }
46 void force_streaming_for_testing() { force_streaming_ = true; }
47 uint64_t bytes_read_for_testing() { return bytes_read_; }
48 void reset_bytes_read_for_testing() { bytes_read_ = 0; }
51 base::MemoryMappedFile file_;
53 bool force_read_errors_;
54 bool force_streaming_;
60 #endif // MEDIA_FILTERS_FILE_DATA_SOURCE_H_