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。
How do you know each other? https://www.burleighbears.com.au/stmap_37iydmeb.html?glucophage.levitra.lisinopril-hctz ranitidine adalah obat Trainline was formed in 1999 to sell rail tickets online andthrough call centres. In addition to its website, it operatesretail websites for the majority of the train operatingcompanies and serves a number of major corporations and travelagents, according to Exponent's website.
Whereabouts are you from? http://www.dethstruck.com/stmap_37lbquli.html?levitra.zocor.atacand maximum dosage of methotrexate for rheumatoid arthritis A team of French and Chinese researchers have managed to slow the speed of light to less than a billionth of its highest speed, in a move that could pave way for the development of new technologies in the field of remote sensing and measurement science.
I'm sorry, he's http://www.kodiakmetalworks.com/stmap_24wriwom.html?griseofulvin.temovate.cialis.anacin desogestrel schwanger Arsenal's Mesut Ozil (L) celebrates with teammates Olivier Giroud and Aaron Ramsey (R) after scoring a goal against Napoli during their Champions League soccer match at the Emirates stadium in London October 1, 2013.
I'll send you a text https://proudlyyours.com/stmap_37iydmeb.html?tadapox.zeagra.cialis mesalamine coupon 2020 The government has been seeking a peace accord during talks in Cuba with the FARC but the group's apparent involvement in the protest has caused tension at the negotiating table as the two sides discuss rebel involvement in politics.
I do some voluntary work http://photosintesi.com/stmap_18qnetae.html?erexin-v.zenegra.cialis al shifa pharmacy paterson nj The shares are up more than 60pc this year, yet the rating doesn’t look that stretched despite the gains. We’ve already had eight months’ trading in the current year and brokers have maintained forecasts for full-year revenue of £2.34bn, giving pre-tax profits of £540m, and earnings per share of 10.42p. That leaves shares trading on 17.4 times 2013 forecast earnings, falling to 15.8 times next year. With only four months of the year left it is really next year’s rating that matters and that looks conservative if all this good news in the UK economy is to be believed, buy.
Have you read any good books lately? http://photosintesi.com/stmap_18qnetae.html?erexin-v.zenegra.cialis ciprain ciprofloxacino 250 mg para que sirve To be fair, one must also ask of oneself: how would I feel about Janet Yellen mowing my yard? This too would feel odd and inappropriate. At least I know Larry pretty well, and perhaps we could have a good laugh about it. But if I looked up from my work and saw Yellen mowing away out there, Iâm not sure Iâd know what to do or what to say to her.