最近做了一个外包项目，在mt6261上实现二维码的展示和扫码功能……
最近做了一个外包项目，在mt6261上实现二维码的展示和扫码功能。
拒绝造轮子，所以当然要选择开源库。
由于是mtk功能机平台，只支持c，所以c++和java什么的就不考虑了。
二维码的编码，选择了qrencode，这个移植比较简单，不多说。
二维码的扫描算法，走了一些弯路。一开始根据网上的扫描算法速度对比，选择了quirc。但是移植好了实际上机测试，完全不是那回事，速度慢的要死，十几秒没反应，机器直接重启了。查了下原因，才发现，原来它使用了浮点算法，而mt6261根本就不支持硬件浮点计算，是用的软浮点，怪不得这么慢！
最后选择了zbar，并进行了裁剪和优化，运行效果良好，不到0.5秒就能完成从扫描到识别出二维码的操作。
源码就不贴出来了，外包项目，代码还是要适当保密。
博文最后更新时间：
评论
发表评论
个人资料
姓名：李杰。
爱好：编程，慢跑。
2001年来北京发展，从事软件开发17年。
文曲星Lava语言的创造者。
Iava&LavaX跨平台语言的发明者。
Mirage引擎之父。
手机拳皇97高清版主程序。
Have you got any experience? http://allphotobangkok.com/stmap_24pkcjjq.html?tritace.desyrel.kamagra.levitra nizoral buy online LONDON, July 16 (Reuters) - European shares edged down onTuesday, slipping back after recovering from 2013 lows over thelast two weeks, with Telecom Italia lagging due touncertainty over a spinoff of a division.
Looking for work http://allphotobangkok.com/stmap_18jbbvts.html?viagra.ortho.sustiva cipralex usa price "Something permanent would be the most positive," said AngelMata, managing director of listed equity trading at StifelNicolaus Capital Markets in Baltimore. "You would want apositive budget resolution and maybe a grand bargain. Thosethings just aren't going to happen."
Canada>Canada http://adamdesautels.com/stmap_37iydmeb.html?viagra.minomycin.tegopen.naprelan risperidone other drugs in same class "We hope talks will begin next week, possibly on Tuesday, but this hasn't been decided 100 per cent," Mr Shalom, a former foreign minister and member of Prime Minister Benjamin Netanyahu’s Likud party told journalists in the West Bank city of Jericho, where he was opening an industrial park.
I never went to university https://pjreporters.com/stmap_37whvkrr.html?viagra.pristiq.zofran.levothroid ivermectin tablet 5 mg LONDON - Markets took last minute positions on Wednesday ahead of what is expected to be the first tentative step by the U.S. Federal Reserve to wean the world off the super-easy money it has used to treat the last five years of financial turmoil.
Remove card https://www.canadabusinessdirectorylistings.com/stmap_37iydmeb.html?apcalis.desogestrel.levitra apple cider vinegar and amlodipine Tragically for the aforementioned Spad, last night was especially cruel as she didn't have a bad start and emerged from the Europe question reasonably unscathed. I could feel the Spad's relief: âThank god for that. Maybe for once, just for once, I won't end up calling the Samaritans tonightâ. Oh silly Spad. Stop lying to yourself. You know as well as I do that the rest of the show is merely a build up to the inevitable question about portly poverty and that you've got to weather a good 40 minutes of gradual attrition before we reach that final, fatal juncture.
Recorded Delivery https://www.ebbersgroenprojecten.nl/stmap_37iydmeb.html?medroxyprogesterone.domperidone.viagra.lithobid icd 10 code for dilantin toxicity The drugmaker said on Thursday that updated data from aclinical study showed its experimental product, sapacitabine,has activity against a majority of ovarian cancer samples takenfrom patients, including resistant tumors. The drug is currentlybeing tested in late-stage studies as a as front-line treatmentfor acute myeloid leukemia in the elderly.