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124 lines
2.9 KiB
C++
124 lines
2.9 KiB
C++
// Matt Wells, copyright Nov 2008
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#ifndef _IMAGES_H_
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#define _IMAGES_H_
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#include "Msg0.h"
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#include "Msg36.h"
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#include "Msg13.h"
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#include "IndexList.h"
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#define MAX_IMAGES 500
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class Images {
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public:
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Images();
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void reset();
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// . hash the candidates with a gbimage: prefix
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// . called by XmlDoc.cpp
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// . used by Image.cpp for determining uniqueness of image
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//bool hash ( long trVersion ,
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// class Xml *xml ,
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// class Url *url ,
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// class TermTable *table ,
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// long score );
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// set the m_imageNodes[] array to the potential thumbnails
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void setCandidates ( class Url *pageUrl ,
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class Words *words ,
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class Xml *xml ,
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class Sections *sections );
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// . returns false if blocked, true otherwise
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// . sets errno on error
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// . "termFreq" should NOT be on the stack in case we block
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// . sets *termFreq to UPPER BOUND on # of records with that "termId"
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bool getThumbnail ( char *pageSite ,
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long siteLen ,
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long long docId ,
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class XmlDoc *xd ,
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char *coll ,
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char **statusPtr ,
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long hopCount,
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void *state ,
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void (*callback)(void *state) );
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char *getImageData () { return m_imgData; };
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long getImageDataSize() { return m_imgDataSize; };
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//long getImageType () { return m_imageType; };
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bool gotTermFreq();
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bool launchRequests();
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void gotTermList();
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bool downloadImages();
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bool gotImage ( );
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void thumbStart_r ( bool amThread );
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long m_i;
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long m_j;
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// callback information
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void *m_state ;
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void (* m_callback)(void *state );
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bool m_setCalled;
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long m_errno;
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long m_hadError;
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bool m_stopDownloading;
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char **m_statusPtr;
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char m_statusBuf[128];
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char *m_coll;
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long long m_docId;
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IndexList m_list;
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long m_numImages;
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long m_imageNodes[MAX_IMAGES];
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// termids for doing gbimage:<url> lookups for uniqueness
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long m_termIds [MAX_IMAGES];
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// for the msg0 lookup, did we have an error?
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long m_errors [MAX_IMAGES];
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class Url *m_pageUrl;
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class Xml *m_xml;
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Msg13Request m_msg13Request;
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// . for getting # of permalinks from same hopcount/site
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// . we need at least 10 for the uniqueness test to be effective
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Msg36 m_msg36;
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// . for getting docids that have the image
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// . for the uniqueness test
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Msg0 m_msg0;
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Msg13 m_msg13;
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// download status
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long m_httpStatus;
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// ptr to the image as downloaded
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char *m_imgData;
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long m_imgDataSize;
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long m_imgType;
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// udp slot buffer
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char *m_imgBuf;
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long m_imgBufLen; // how many bytes the image is
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long m_imgBufMaxLen; // allocated for the image
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long m_dx; // width of image in pixels
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long m_dy; // height of image in pixels
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bool m_thumbnailValid; // is it a valid thumbnail image
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// we store the thumbnail into m_imgBuf, overwriting the original img
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long m_thumbnailSize;
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// the thumbnail dimensions
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long m_tdx;
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long m_tdy;
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};
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#endif
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