[linux-sunxi] It seems that AllWinner released media codec source code
At least the source code of mpeg2, mpeg4, jpeg, h.264 decode library has been released today: github.com/allwinner-zh/media-codec Well done, allwinner. Hope encode library will follow. -- You received this message because you are subscribed to the Google Groups linux-sunxi group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[linux-sunxi] Does anyone success encode image to jpg stream by using allwinner media-codec library?
Hi, all. I'm writing a program that encode image (grab from camera sensor) to jpg file. I saw there ia a function named AWJpecEnc() in allwinner media-codec library, so I use it. But when I call this function, the cpu load up to 100% and this function don't return, it seems that this function enter an infinite loop. Does anyone success encode image to jpg stream by using allwinner media-codec library? -- You received this message because you are subscribed to the Google Groups linux-sunxi group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[linux-sunxi] g2d rotation has poor performance, is it normal?
Hi, all. I'm capturing image from csi, with yuv420 pixel format (G2D_FMT_PYUV420UVC) and the size is 1280x720. I need to rotate the image, as csi don't support rotation, so I employ g2d. But the rotation performance is very poor. I meansure the performance by calculating how many time g2d_wait_cmd_finish() used. It's about 60ms per frame! This is too slow, is it normal? -- You received this message because you are subscribed to the Google Groups linux-sunxi group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[linux-sunxi] Re: g2d rotation has poor performance, is it normal?
I'm using a10 and linux-sunxi kernel 3.4 from linux-sunxi github repository. 在 2015年2月4日星期三 UTC+8下午11:22:14，jacky lau写道： Hi, all. I'm capturing image from csi, with yuv420 pixel format (G2D_FMT_PYUV420UVC) and the size is 1280x720. I need to rotate the image, as csi don't support rotation, so I employ g2d. But the rotation performance is very poor. I meansure the performance by calculating how many time g2d_wait_cmd_finish() used. It's about 60ms per frame! This is too slow, is it normal? -- You received this message because you are subscribed to the Google Groups linux-sunxi group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Re: [linux-sunxi] Allwinner documentation (hardware datasheet, user manual) for A10, A10s, A13, A20, A31, A31s
I agree with you and Jhon Yi. Developing a soc is not too hard now, getting customers is harder and more important. I hope the market will force all China Soc company more open. But before that happen, I don't think they will become more open. They don't have experience in working with the open source community, if you want them to be more open, you need to do more communicate with them. And remember, to them, neither the law nor the spirit of free software, but making money is paramount. Tell them they will get more customers, make more money and prove it, then they will follow. 在 2014年10月11日星期六UTC+8下午10时53分48秒，Jon Smirl写道： On Sat, Oct 11, 2014 at 10:31 AM, jacky lau i90...@gmail.com javascript: wrote: A big client will buy thousands of chips once. Are there any relation between big client and user manual publishing? No. So they don't think it's necessary to open their private property. When you are a big client, you are VIP, all document and source code is open to you. And if publish all technical documentation, competitors will know some technical secret (e.g. bug;) they don't want them to know. Open world is beautiful, but they will not actively participate if there is no return. Why some China soc company publish some documents and source code now? I think this is mainly for marketing. But no matter how, VIP priority. Right now Allwinner is only good for tablets and STBs because Allwinner supplies turnkey solutions. If documentation were more open other applications could be developed. If customer can't get software working for these other applications, they won't buy thousands of chips. So if Allwinner wants to survive past the end of the tablet fad they have to start developing these other markets. Otherwise when the tablet fad is over it will be the end of Allwinner. You also over estimate the value of technical secrets. What is the point of putting a secret h.264 encode/decode unit on the chip if half of your customers can't get it working? Obviously Rockchip knows how to make h.264 encode/decode since they have a similar unit on their chip. And so does Freescale, TI, ST, etc. -- there is no big secret in making h.264 hardware for people familiar with how to do it (hint, it is an ISO standard). So by keeping the documentation secret you hide nothing significant from your competitors and much, much worse -- you keep your own customers from using the hardware they bought. Think about it --- which is more important - hiding something form a competitor that they probably already know, or getting your customers to ship and buy more chips? Bottom line - which one brings cash in the door - secret documentation or getting as many customers as possible to ship? 在 2014年10月6日星期一UTC+8下午8时55分30秒，RFat写道： Hi Kevin, Publishing the user manuals will certainly increase Allwinner's chips popularity. I was wondering if there is a rough estimate as to when the A80's manual will be made available? Thanks! Raanan On Monday, September 29, 2014 12:46:53 PM UTC+3, ke...@allwinnertech.com wrote: Hi All, I have put the documents on github, and the url is https://github.com/allwinner-zh/documents.git Thanks Simos, Henrik and Luc's suggestion. And other documents will be upated to here when released. Best Regards, kevin.z.m From: HenrikNordström Date: 2014-09-29 08:46 To: linux...@googlegroups.com CC: sh...@allwinnertech.com; Meng Zhang Subject: Re: [linux-sunxi] Allwinner documentation (hardware datasheet, user manual) for A10, A10s, A13, A20, A31, A31s sön 2014-09-28 klockan 02:18 +0200 skrev Luc Verhaegen: Why didn't someone from Allwinner send these documents in him/herself? The current person discussion the matter with Allwiner was Simos, who is part of the linux-sunxi community. Allwinner sent current versions of the documents to Simos for distribution in the community. What is wrong? Mailing the full set of documents as attachments directly to the mailinglist is not appropriate. And for some strange and unknown reason Allwinner do not appear to have a public document archive for this kind of documents themselves, and seems to only distribute them via email to their customers when requested. The real question is why AW do not make the documents available in public themselves, and likewise why they do not have a public git repository for SDK sources etc (github or elsewhere). Regards Henrik NOTICE: This e-mail and any included attachments are intended only for the sole use of named and intended recipient (s) only. If you are the named and intended recipient, please note that the information contained in this email and its embedded files are confidential and privileged. If you
Re: Re: [linux-sunxi] Allwinner documentation (hardware datasheet, user manual) for A10, A10s, A13, A20, A31, A31s
A big client will buy thousands of chips once. Are there any relation between big client and user manual publishing? No. So they don't think it's necessary to open their private property. When you are a big client, you are VIP, all document and source code is open to you. And if publish all technical documentation, competitors will know some technical secret (e.g. bug;) they don't want them to know. Open world is beautiful, but they will not actively participate if there is no return. Why some China soc company publish some documents and source code now? I think this is mainly for marketing. But no matter how, VIP priority. 在 2014年10月6日星期一UTC+8下午8时55分30秒，RFat写道： Hi Kevin, Publishing the user manuals will certainly increase Allwinner's chips popularity. I was wondering if there is a rough estimate as to when the A80's manual will be made available? Thanks! Raanan On Monday, September 29, 2014 12:46:53 PM UTC+3, ke...@allwinnertech.com wrote: Hi All, I have put the documents on github, and the url is https://github.com/allwinner-zh/documents.git Thanks Simos, Henrik and Luc's suggestion. And other documents will be upated to here when released. -- Best Regards, kevin.z.m *From:* HenrikNordström *Date:* 2014-09-29 08:46 *To:* linux...@googlegroups.com *CC:* sh...@allwinnertech.com; Meng Zhang *Subject:* Re: [linux-sunxi] Allwinner documentation (hardware datasheet, user manual) for A10, A10s, A13, A20, A31, A31s sön 2014-09-28 klockan 02:18 +0200 skrev Luc Verhaegen: Why didn't someone from Allwinner send these documents in him/herself? The current person discussion the matter with Allwiner was Simos, who is part of the linux-sunxi community. Allwinner sent current versions of the documents to Simos for distribution in the community. What is wrong? Mailing the full set of documents as attachments directly to the mailinglist is not appropriate. And for some strange and unknown reason Allwinner do not appear to have a public document archive for this kind of documents themselves, and seems to only distribute them via email to their customers when requested. The real question is why AW do not make the documents available in public themselves, and likewise why they do not have a public git repository for SDK sources etc (github or elsewhere). Regards Henrik NOTICE: This e-mail and any included attachments are intended only for the sole use of named and intended recipient (s) only. If you are the named and intended recipient, please note that the information contained in this email and its embedded files are confidential and privileged. If you are neither the intended nor named recipient, you are hereby notified that any unauthorized review, use, disclosure, dissemination, distribution, or copying of this communication, or any of its contents, is strictly prohibited. Please reply to the sender and destroy the original message and all your records of this message (whether electronic or otherwise). Furthermore, you should not disclose to any other person, use, copy or disseminate the contents of this e-mail and/or the documents accompanying it. -- You received this message because you are subscribed to the Google Groups linux-sunxi group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[linux-sunxi] configure lcdc in u-boot do not working, any suggestion?
I has a AllWinner A10 board which with a 480x800 LCD panel connected. I want to configure the lcdc in u-boot. But after setting the registers, no signal output in LCD0_xxx pin. Below is my u-boot commands, do I miss anything? # port config, set PDx to LCD0_x base 0x01c20800 mw 0x6c 0x mw 0x70 0x mw 0x74 0x mw 0x78 0x # lcdc clock config base 0x01c2 # open lcdc clock mw 0x64 0x10 # set pll3 to 270mhz mw 0x10 0x8000 # open lcd0 ch0 clk mw 0x118 0x8000 sleep 1 mw 0x118 0xc000 # open lcd0 ch1 clk mw 0x12c 0x80008000 # lcdc config base 0x01c0c000 mw 0x000 0x8000 mw 0x044 0xf00a # w = 480, h = 800 mw 0x048 0x01df031f # ht = 563, hbp = 33 mw 0x04c 0x02320020 # vt = 839, vbp = 17 mw 0x050 0x068e0010 # hspw = 17, vspw = 5 mw 0x054 0x0014 mw 0x058 0x0 # enable lcd0 mw 0x040 0x804001e3 -- You received this message because you are subscribed to the Google Groups linux-sunxi group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[linux-sunxi] DirectFB has poor performance in A10?
Hi, all. I run a DirectFB program on an AllWinner A10 board (1GHz with 512MB 16bit RAM). My program is simple, it display a window and show a RGBA png image(800x480). But the program cost about 2.5 seconds from create window to show the image. The performance is very poor. Is it normal? -- You received this message because you are subscribed to the Google Groups linux-sunxi group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
