48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
// Copyright 2017 Google LLC. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#include "packager/file/file.h"
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namespace shaka {
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/// Implements CallbackFile, which delegates read/write calls to the callback
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/// functions set through the file name.
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class CallbackFile : public File {
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public:
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/// @param file_name is the callback file name, which should have callback
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/// address encoded. Note that the file type prefix should be stripped
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/// off already.
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/// @param mode C string containing a file access mode, refer to fopen for
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/// the available modes.
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CallbackFile(const char* file_name, const char* mode);
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/// @name File implementation overrides.
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/// @{
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bool Close() override;
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int64_t Read(void* buffer, uint64_t length) override;
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int64_t Write(const void* buffer, uint64_t length) override;
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int64_t Size() override;
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bool Flush() override;
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bool Seek(uint64_t position) override;
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bool Tell(uint64_t* position) override;
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/// @}
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protected:
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~CallbackFile() override;
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bool Open() override;
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private:
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CallbackFile(const CallbackFile&) = delete;
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CallbackFile& operator=(const CallbackFile&) = delete;
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const BufferCallbackParams* callback_params_ = nullptr;
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std::string name_;
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std::string file_mode_;
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};
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} // namespace shaka
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