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'm afraid that number's ex-directory http://wordpressatlanta.com/stmap_64kncqzz.html?tadora.viagra.tadapox differin jel nedir ne ie yarar A spokesman for the UK Onshore Operators Group said: "Operators in this country are abiding by the law which states that activities at depths of over a mile under the ground do not impact landowners, however in line with the law, operators will inform all landowners in a very clear and transparent manner.”
Yes, I love it! https://pemcincinnati.com/blog/stmap_21wizxfu.html?mononitrate.levitra.beconase.triphala telmisartan mims “People come to watch the cricket for a number of reasons,” he said. “We need to play the situation. Fair credit to Australia they bowled well all day and made it hard to score fluently. The pitch is slow and hard to time the ball on. We have seen people like Ian Bell and Kevin Pietersen score fluently but it was not that easy even for them. We have played pretty well to get to where we have.”
I'd like to cancel a cheque https://helitecstructural.com.au/stmap_39dwanrs.html?fairness.levitra.betoptic effexor weaning plan The authors encourage screening mothers for PTSD alongside depression in pediatric primary care settings. "This might be an effective way to intervene on child maltreatment," Chemtob told Reuters Health.
Where do you come from? http://www.missionarygeek.com/stmap_39bocxge.html?pariet.viagra.vilitra moxifloxacin goodrx "South Korea's surplus showing matched expectations, whilethe political showdown in Washington isn't allowing the U.S.jobs claims data to be fully appreciated," said Hi Investment &Securities analyst Lee Seung-joon.
Nice to meet you http://wordpressatlanta.com/stmap_39dykkca.html?cyproheptadine.cialis.tadaga.lopressor gi thuc omeprazole delayed release capsules usp 20mg If confirmation were needed that Murray and Djokovic have replaced Federer and Rafael Nadal as the game's greatest rivalry, it came with the 25-year-old Scot's masterful victory over the 31-year-old Swiss. The scoreline did not reflect Murray's superiority. But for the two tie-breaks, in which the Scot played poorly by comparison with his level at other times, and one loose service game early in the fourth set, the world No 3 was much the better player.
Sorry, I'm busy at the moment https://www.forward-now.com/stmap_21wizxfu.html?viagra.fincar.ventolin.decadron efectos secundarios del meclizine 25 mg BofA Merrill Lynch is Kroger's financial adviser, while Arnold & Porter LLP is the legal adviser. J.P. Morgan Securities is the financial adviser to Harris Teeter and McGuireWoods is the legal adviser.