libexif-master.tar.gz

libexif 读写自定义exif信息实例，详细说明见MyReadme.txt 1.编译库 运行libexif-mater 文件夹的mybuild_ubuntu.sh 运行后当前目录build的文件夹会有编译文件 ls build/ include lib share 2. 编译示例demo cd contrib/examples/ ./compile_exampale.sh -------------------------------- test_jpeg_exif_new 写自定义exif 信息 read_jpeg_exif 读取写入的exif信息 写exif 信息使用: 用windows自带画图软件随便产生一个jpg文件或者使用自带的test.jpg文件 ./test_jpeg_exif_new test.jpg test_exif.jpg ------------------------------------------------------ Add customer exif info for test.jpg ok! #正常会有这个输出 读取写入的exif信息: ./read_jpeg_exif test_exif.jpg -------------->ExifInfo:test_exif.jps Start<-------------- ======IFD: 0 0====== X-Resolution: 72 Y-Resolution: 72 Resolution Unit: Inch ======IFD: 1 1====== ======IFD: 2 EXIF====== Exposure Time: 1/18 sec. F-Number: f/4.0 ISO Speed Ratings: 60 Exposure Bias: 0.00 EV Maximum Aperture Value: 4.00 EV (f/4.0) Subject Distance: 0.0 m Metering Mode: Pattern Flash: Flash fired Focal Length: 35.0 mm Flash Energy: 65535 Exif Version: Exif Version 2.1 FlashPixVersion: FlashPix Version 1.0 Color Space: Uncalibrated ======IFD: 3 GPS====== North or South Latitude: W Latitude: 38.0, 132897/0, 0/0, 0/0, 0/0, 0/0, 0/0, 0/0 East or West Longitude: N Longitude: 9.0, 132833/0, 0/0, 0/0, 0/0, 0/0, 0/0, 0/0 ======IFD: 4 Interoperability====== -------------->ExifInfo:test_exif.jps End<--------------