81 lines
3.1 KiB
C++
81 lines
3.1 KiB
C++
// Copyright (c) 2012 Marshall A. Greenblatt. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the name Chromium Embedded
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// Framework nor the names of its contributors may be used to endorse
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// or promote products derived from this software without specific prior
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// written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// ---------------------------------------------------------------------------
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//
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// The contents of this file are only available to applications that link
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// against the libcef_dll_wrapper target.
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//
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#ifndef CEF_INCLUDE_WRAPPER_CEF_BYTE_READ_HANDLER_H_
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#define CEF_INCLUDE_WRAPPER_CEF_BYTE_READ_HANDLER_H_
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#pragma once
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#include "include/base/cef_lock.h"
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#include "include/cef_base.h"
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#include "include/cef_stream.h"
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///
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/// Thread safe implementation of the CefReadHandler class for reading an
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/// in-memory array of bytes.
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///
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class CefByteReadHandler : public CefReadHandler {
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public:
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///
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/// Create a new object for reading an array of bytes. An optional |source|
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/// reference can be kept to keep the underlying data source from being
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/// released while the reader exists.
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///
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CefByteReadHandler(const unsigned char* bytes,
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size_t size,
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CefRefPtr<CefBaseRefCounted> source);
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CefByteReadHandler(const CefByteReadHandler&) = delete;
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CefByteReadHandler& operator=(const CefByteReadHandler&) = delete;
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// CefReadHandler methods.
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size_t Read(void* ptr, size_t size, size_t n) override;
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int Seek(int64_t offset, int whence) override;
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int64_t Tell() override;
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int Eof() override;
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bool MayBlock() override { return false; }
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private:
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const unsigned char* bytes_;
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int64_t size_;
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int64_t offset_ = 0;
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CefRefPtr<CefBaseRefCounted> source_;
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base::Lock lock_;
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IMPLEMENT_REFCOUNTING(CefByteReadHandler);
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};
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#endif // CEF_INCLUDE_WRAPPER_CEF_BYTE_READ_HANDLER_H_
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