bufferedslavexmlregionsource.h
来自「VC视频对象的跟踪提取原代码（vc视频监控源码）」· C头文件 代码 · 共 165 行
H
165 行
///////////////////////////////////////////////////////////////////////////////// //// BufferedSlaveImageSource.h defining a buffered XMLRegionSource class //// //// A XMLRegionSource which waits for external XML data blocks using //// pthread_cond_wait. The data given is buffered in a FIFO buffer and //// can be queried using get_next(). For this, it will be parsed using //// XMLRegionSource methods. The get_next() method returns a RegionSet * //// and deletes the XML buffer. //// //// Additionally, the class can fill up the FIFO buffer from a //// NumberedFileSource, either automatically in get_next() or using our //// fill_buffer() method. //// //// XML Schema namespace "http://www.cvg.cs.reading.ac.uk/ADVISOR". //// //// Author : Nils T Siebel (nts) //// Created : Wed Feb 20 18:11:45 GMT 2002 //// Revision : 0.0 of Wed Feb 20 18:11:45 GMT 2002 //// Copyright : The University of Reading //// /////////////////////////////////////////////////////////////////////////////////#ifndef __BUFFERED_SLAVE_XML_REGION_SOURCE_H__#define __BUFFERED_SLAVE_XML_REGION_SOURCE_H__#include <cassert>#include <pthread.h> // for IEEE POSIX 1003.1c --- 1995 threads#include <climits> // for UINT_MAX// XML libraries for SAX2 API...#include <util/XMLUniDefs.hpp>// our own includes#include "XMLRegionSource.h"#include "tracker_defines_types_and_helpers.h"namespace ReadingPeopleTracker{// forward declarationsclass RegionSet;class TrackedObjectSet;class NumberedFileSource;// number of `RegionSet's to buffer before refusing external requests to// handle_new_blob_data(...). Equals to maximum number of `RegionSet's used and// provided by this class at any one time.#define BSXRS_DEFAULT_BUFFER_SIZE 10////////////////////////////////////////////////////////////////////////////////////// //// class BufferedSlaveXMLRegionSource : public XMLRegionSource //// //// This class defines an interface to XML Region data as defined by the XML //// Schema namespace "http://www.cvg.cs.reading.ac.uk/ADVISOR" (the current name). //// //// An instance of this class will read and buffer XML data given through //// handle_new_blob_data(...) until it is queried by get_next(). get_next() will //// parse the XML data, return a RegionSet * and delete the XML buffer. //// //////////////////////////////////////////////////////////////////////////////////////class BufferedSlaveXMLRegionSource : public XMLRegionSource{private: ////////////////////////////////////////////////////////////////////////// // Private member data // ////////////////////////////////////////////////////////////////////////// unsigned int buffer_entries; // actual number of images in buffer, including current unsigned int buffer_size; // maximum of the above (given during construction) // dimensions of associated images --- needed for converting coordinates unsigned int xdim; unsigned int ydim; // arrays [0..buffer_size-1] of data: unsigned char **xml_data_buffer; // buffered XML data buffers... unsigned int *xml_data_size_in_buffer; // ... and their respective sizes // our master xml data source, if given: to fill up the buffer, either // using our fill_buffer method or automatically in get_next() NumberedFileSource *master_xml_data_source; ////////////////////////////////////////////////////////////////////////// // Pthread data: mutex and condition variables for xml_data_buffer // ////////////////////////////////////////////////////////////////////////// pthread_mutex_t xml_data_buffer_modification; // write access to xml_data_buffer pthread_cond_t new_xml_data_in_buffer; // whether new XML data has arrived in buffer public: ////////////////////////////////////////////////////////////////////////// // Constructor and Destructor // ////////////////////////////////////////////////////////////////////////// BufferedSlaveXMLRegionSource(unsigned int the_xdim, unsigned int the_ydim, NumberedFileSource *the_master_xml_data_source = NULL, unsigned int the_buffer_size = BSXRS_DEFAULT_BUFFER_SIZE); ~BufferedSlaveXMLRegionSource(); ////////////////////////////////////////////////////////////////////////// // Method to call when a new XML blob data arrives. // // It will be parsed and buffered or ignored (if the buffer is full). // ////////////////////////////////////////////////////////////////////////// void handle_new_blob_data(unsigned char *the_data, unsigned int the_data_size); /////////////////////////////////////////////////////////////////////////// // Method to fill up buffer from master_xml_data_source // /////////////////////////////////////////////////////////////////////////// unsigned int fill_buffer(unsigned int number_of_blocks_to_add = UINT_MAX); ////////////////////////////////////////////////////////////////////////// // Interface to get RegionSet for current and next frame // ////////////////////////////////////////////////////////////////////////// virtual RegionSet *get_current() { if (current_region_set != NULL) // have valid RegionSet? return current_region_set; else return get_next(); } virtual RegionSet *get_next(); ////////////////////////////////////////////////////////////////////////// // Interface to get frame id of current RegionSet // ////////////////////////////////////////////////////////////////////////// virtual frame_id_t get_frame_id(); ////////////////////////////////////////////////////////////////////////// // Interface to get [max] number of available `RegionSet's in buffer // ////////////////////////////////////////////////////////////////////////// inline unsigned int get_buffer_entries() const { return buffer_entries; } inline unsigned int get_buffer_size() const { return buffer_size; } ////////////////////////////////////////////////////////////////////////// // Interface to query the type of source this XMLRegionSource is // ////////////////////////////////////////////////////////////////////////// virtual XMLRegionSourceType get_source_type() const { return XRST_SLAVE; }};} // namespace ReadingPeopleTracker#endif⌨️ 快捷键说明
复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?