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。
I love the theatre http://invoice.shagunsuitsaree.com/pharmacy/stmap_42qktlqx.html?augmentin.didronel.midamor.levitra apo-terbinafine side effects Meanwhile, Australian unemployment beat expectations with arise of 10,300 in June, but the jobless rate still hit itshighest since 2009 at 5.75 percent as more people looked forwork, a mixed report that did little to clarify the outlook forinterest rates.
Can I use your phone? https://mymymakeup.art/pharmacy/stmap_81aaschp.html?ornidazole.chlorambucil.levitra.dapoxetine extra strength tylenol ingredients So … I put my kids on a budget. I called it their "commission," a term that I got both from my experience as a sales rep and from a book by the financial expert Dave Ramsey. I didn't want to call their payment an allowance, because it implies that you're entitled to the money you receive, like you get it no matter what. Whereas with a "commission," you really have to earn it. Working in sales, I am paid on commission. If I don't go above and beyond, putting myself out there, hustling to close those deals — then I don't get paid. I wanted my boys to understand this concept.
Could I borrow your phone, please? http://redthunderbolt.co.uk/pharmacy/stmap_81pgyiva.html?glibenclamide.viagra.tritace bula atorvastatina 80 mg Hundreds of thousands of people in cities like Oakland and Berkeley depend on the two transit systems for their daily commutes and would spill out into already congested roadways or be left stranded without a mass transit alternative if the strikes coincide.
We need someone with experience https://assetgi.cl/pharmacy/stmap_81dcevos.html?levitra.serpina.carbidopa.neem metoprolol succinate extended release tablets ip 25 mg “I’m not going to miss her, because I’m going to stay in touch with her,” he said. ”And that’s one of the great things. I just love her to death. I hope that I can someday be half the person she is.”
I'd like to send this to http://www.esoftworld.co.kr/pharmacy/stmap_15dawbxe.html?piroxicam.viagra.cordarone.adapalene does imitrex contain aspirin A former popular Labour prime minister, Bob Hawke, said on Saturday: "I'm not trying to denigrate the good campaign that Tony ran, but I really believe that this was an election that was lost by the government more than one that was won by the opposition."
My battery's about to run out https://ppucbonline.com/pharmacy/stmap_42qktlqx.html?prilosec.sparfloxacin.cialis acetaminophen codeine offshore-pharmacy.com "The situation in Syria is such that underwriters reallyneed to be notified if a vessel wishes to go there so they canmake their own decision as to whether that risk is bearable atthe current terms, or change the terms or conditions for therisks," said Neil Roberts of the Lloyd's Market Association,which represents insurance underwriting businesses in theLloyd's market.