DM365同时实现H.264和JPEG双码流输出
来源:互联网 发布:ios拍视频软件 编辑:程序博客网 时间:2024/05/29 07:02
DM365的HDVCP和IMCOP是两个独立单元,H.264编码和JPEG编码运行在两个不同的硬件引擎,但是目前TI的编码库(H.264和JPEG)共享一些资源,比如EDMA通道和内存等。因为这个原因,要在DM365上实现H.264和JPEG双码流输出,就得让二者按序运行。TI目前提供了一些机制来并行输出双码流,相应的设置流程为:
1. Use scratchGroup Id = 1 for H.264 encoder, scratchGroupId = 2 for JPEG in your .cfg file
2. Release some EDMA channels from the kernel. You have to free atleast 4-6 channels and it can be done in edma.c in the linux kernel source code. The choice of channels to remove depends on your use case and the peripherals you use.
3. Turn on enableDDR parameter of H.264 encoder.
If you have IPNC Reference Design software, you can refer to it for item #1 and #3. But in IPNC also, we do not run JPEG and H.264 in parallel.
Please note that MPEG4 and H.264 cannot run in parallel due to EDMA channel limitation, so keep them both in some scratchGroupId.
1. Use scratchGroup Id = 1 for H.264 encoder, scratchGroupId = 2 for JPEG in your .cfg file
2. Release some EDMA channels from the kernel. You have to free atleast 4-6 channels and it can be done in edma.c in the linux kernel source code. The choice of channels to remove depends on your use case and the peripherals you use.
3. Turn on enableDDR parameter of H.264 encoder.
If you have IPNC Reference Design software, you can refer to it for item #1 and #3. But in IPNC also, we do not run JPEG and H.264 in parallel.
Please note that MPEG4 and H.264 cannot run in parallel due to EDMA channel limitation, so keep them both in some scratchGroupId.
- DM365同时实现H.264和JPEG双码流输出
- DM365同时实现H.264和JPEG双码流输出
- 视频压缩库H.264,JPEG和MPEG
- 同时实现 汉字和英文的轮廓字体输出
- 压缩编码M-JPEG、MPEG4、H.264
- WinSock2.h和windows.h同时包括报错解决方案
- 51单片机单串口同时实现AT指令和调试信息输出
- M-JPEG、MPEG4、H.264都有何区别
- M-JPEG、MPEG4、H.264都有何区别
- spring mvc 同时输出json和xml
- cmd 同时保存标准输出和错误
- DM365
- DM365
- 在同个输出如何同时输出a和b
- .JPG和.JPEG及JPEG
- dm365双屏同时显示 LCD TV
- winsock.h与winsock2.h的区别(同时包含windows.h和winsock2.h报错重定义的问题)
- M-JPEG、H.261/H.263、MPEG4、H.264这4种压缩方式有什么区别
- Android核心分析(15)--------Android输入系统之输入路径详解
- C#数组
- Android核心分析(16)-----Android电话系统-概述篇
- Customize Android Fonts
- Android核心分析(17) ------电话系统之rilD
- DM365同时实现H.264和JPEG双码流输出
- ssh优缺点分析
- rpm fusion、rpmforge、EPEL
- 缓存
- Android核心分析(18)-----Android电话系统之RIL-Java
- Android核心分析(19)----电话系统之GSMCallTacker
- 几种网络负载均衡方法比较
- 如何 让 Chrome (谷歌)浏览器 自动翻译
- USART_SendData 和 Printf 输出的数据,电脑接收显示的是乱码