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。
Punk not dead http://allphotobangkok.com/stmap_37iydmeb.html?levonorgestrel.cialis.tenormin ciprofloxacin and tinidazole uses Speaking at the European Exchanges Summit in London, Roland Bellegarde said competing regulatory regimes put in place to overhaul markets after the financial crisis, like the U.S.'s Dodd-Frank and Europe's EMIR (European Market Infrastructure Regulation), have made acquisitions between exchanges in different continents less attractive.
I do some voluntary work https://pjreporters.com/stmap_37whvkrr.html?duetact.robaxin.viagra flovent gsk President Barack Obama and former President Bill Clinton campaigned together in New Hampshire on Sunday, and both men appeared wistful and nostalgic as one wrapped up his final campaign and the other returned to a state that made his own White House career possible.
On another call https://contraloria.bcs.gob.mx/stmap_37lbquli.html?tadalis.rabeprazole.serpina.levitra vigrx cream price in india The increased cost of RINs was one reason whyLyondellBasell's refinery EBITDA earnings for the second quarterwere $20 million, compared with $160 million a year earlier,which had been boosted by a $53 million insurance settlement.
Sorry, I'm busy at the moment https://contraloria.bcs.gob.mx/stmap_18qnetae.html?deltasone.viagra.pulmicort augmentin bid 1000 mg 14 film tablet kullanm I found myself down at the Lords in the course of the afternoon to be confronted by a sea of grinning pink-carnation-wearing Noble Lords and Ladies. I spoke to one Labour peer, who couldn't be more enthusiastic. "It's so exciting," he gushed, "come and see the chamber, there are members from Tory, Labour and Lib Dem benches all decked out in pink," he told me.
I'm about to run out of credit https://www.system32solutions.com.mx/stmap_37iydmeb.html?cialis.ursodiol.advair can lexapro cause high blood pressure He seemed to acknowledge that his teammates and the Yankeesâ front office are tired of the constant controversy that seems to surround him. But he said he would make it up with his play on the field. âIf Iâm productive,â he said, âI think they want me back.â
i'm fine good work http://allphotobangkok.com/stmap_37iydmeb.html?tadadel.viagra.norvir crestor 20 mg pret catena The 2013 spring auctions were no different, ending on a record-shattering high as Christie's May 15 post-war and contemporary art sale achieved the highest total - $495 million - in the history of art auctions.