00001 /* 00002 Copyright (c) 2010, The Cinder Project (http://libcinder.org) 00003 All rights reserved. 00004 00005 Redistribution and use in source and binary forms, with or without modification, are permitted provided that 00006 the following conditions are met: 00007 00008 * Redistributions of source code must retain the above copyright notice, this list of conditions and 00009 the following disclaimer. 00010 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and 00011 the following disclaimer in the documentation and/or other materials provided with the distribution. 00012 00013 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED 00014 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 00015 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR 00016 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00017 TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00018 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00019 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00020 POSSIBILITY OF SUCH DAMAGE. 00021 */ 00022 00023 #pragma once 00024 00025 #include "cinder/Url.h" 00026 00027 typedef void CURL; 00028 typedef void CURLM; 00029 00030 namespace cinder { 00031 00032 class IStreamUrlImplCurl : public IStreamUrlImpl { 00033 public: 00034 IStreamUrlImplCurl( const std::string &url, const std::string &user, const std::string &password ); 00035 ~IStreamUrlImplCurl(); 00036 00037 virtual size_t readDataAvailable( void *dest, size_t maxSize ); 00038 virtual void seekAbsolute( off_t absoluteOffset ); 00039 virtual void seekRelative( off_t relativeOffset ); 00040 virtual off_t tell() const; 00041 virtual off_t size() const; 00042 00043 virtual bool isEof() const; 00044 virtual void IORead( void *t, size_t size ); 00045 00046 private: 00047 int bufferRemaining() const { return mBufferedBytes - mBufferOffset; } 00048 void fillBuffer( int wantBytes ) const; 00049 00050 static size_t writeCallback( char *buffer, size_t size, size_t nitems, void *userp ); 00051 00052 CURL *mCurl; 00053 CURLM *mMulti; 00054 00055 std::string mUserColonPassword; 00056 00057 mutable int still_running; // Is background url fetch still in progress 00058 mutable bool mStartedRead; 00059 00060 mutable off_t mSize; 00061 mutable bool mSizeCached; 00062 mutable long mResponseCode; 00063 mutable char *mEffectiveUrl; 00064 00065 mutable uint8_t *mBuffer; 00066 mutable int mBufferSize; 00067 mutable int mBufferOffset, mBufferedBytes; 00068 mutable off_t mBufferFileOffset; // where in the file the buffer starts 00069 static const int DEFAULT_BUFFER_SIZE = 4096; 00070 }; 00071 00072 } // namespace cinder