WhyCan Forum(哇酷开发者社区)

大佬什么都极简,还喜欢rt-thread

仰望大佬↑↑↑↑↑↑↑↑↑↑↑

Niubility!!!

Thank you!
There are fights near my city.
We will win!

Simple MJPEG decoding (800x480 @ 25fps)
This example also contains module for working with SD memory card and FATFS library.
The vid directory and its contents must be copied to the root directory of the memory card.
Sources: mjpgdec.7z

人们可以获得哪些文件来构建此功能？

This project is based on CEDRUS sources.
JPEG decoding is fast. YUV2RGB converting in the first sources is slow (~60mS), so in the mjpeg demo I did a table conversion (~24mS).

All in good time

你可以上传github

感谢大佬分享，最近正在找硬解的相关代码

这个是软件解码，并不是硬件解码

这个解码是裸机下的还是linux下的

非常抱歉，我理解错误。
mjpgdec.bin 在flash中的地址是多少？ 32768？

could you please share this project on github or gitee？i can't download it on this website.

wow, thats looks cool. keep up, very good work bro

nice work.

wowo,so good,thank you for your share

I am in Ukraine and I tell you - we are fighting for our freedom! Russians are fascists. They are killing our people, so in this war we will accept any help.

@Ozelot
https://github.com/mikhailk-2012/sunxi-cedarx2/tree/80e3090ad9ae76706b7d78fdb1fbbf16c56508e4/SOURCE/plugin/vdecoder/h264

what about the H264 decoder？

最近编辑记录 hoel (2023-02-17 17:11:08)

@Ozelot
wow, that is a reality check, hard to realize what you are going through. With my best wishes for a fast resolution of this terrible situation and a fast recovery of the country.
I'll update here too if i have some news about the H264, i already started to port it months ago but there was just too many third party linux dependencies. I still have the Keil project though.

最近编辑记录 hoel (2023-02-17 22:59:07)

@Ozelot
hi, dear friend, i downloaded baremetal project from your repository.
I set timer0 interrupt enable, but it didn't work.
how to add irq_handler( such as timer, uart, gpio ...) to f1c_nonos-main\src\lvgl\main.c?

------------------------------------------
void timer_irq_handler(void) {
    lv_tick_inc(1);
    tim_clear_irq(TIM0);
    timer_count ++;
   
    if(timer_count == 1000)//1S
    {
       timer_count = 0;
       
       uart_sendbyte(UART1, 0x55);//send 1byte every 1s
    }
}

void timer_init(void) {
    // Configure timer to generate update event every 1ms
    tim_init(TIM0, TIM_MODE_CONT, TIM_SRC_HOSC, TIM_PSC_1);
    tim_set_period(TIM0, 24000000UL / 1000UL);//1ms
    tim_int_enable(TIM0);
    // IRQ configuration
    intc_set_irq_handler(IRQ_TIMER0, timer_irq_handler);
    intc_enable_irq(IRQ_TIMER0);

    tim_start(TIM0);   
}
------------------------------------------

thank you.

最近编辑记录 sh200436 (2023-06-23 21:35:26)

Wonderful!
I found 'IRQ'  in /drv/sys.c， but i didn’t know how to deal with it, so new irq example is very wonderful.

Thank you so much!

请问和ST的硬件解码器相比如何呢？

你说的是和ST有JPEG硬解的单片机比？貌似应该是这个更强，STM32H7硬解800x480的JPEG耗时大概10ms

看起来是RGB反了，或是大小端反了。
搞个RGB纯色图片来测试下看看。

Ozelot, 谢谢你，软件很好用。Make file 改了点，文件架没自动做。

Great software and I was able to run all of them. Just made a quick change to the makefiles to create the directory structure.

jpgdec_makefile.zip

mjpgdec_makefile.zip

Note the mksuxi line is commented out, just uncomment or run separately. I compile on Linux and mksunxi provided is windows.
copy bin to windows and run mksunxi boot.bin

最近编辑记录 metri (2024-08-07 09:33:39)

If anyone tries the 60fps example, there is a caveat. Your screen resolution must be divisible by 32 as the m32dec function relies on this. I'm not sure the best way to solve this. I use 720 resolution so I found this problem. I solved by padding video to 736 with ffmpeg. There may be a better way to fix, but this made it work for me.