全志在线开发者论坛

BSPlayer

前言

本文介绍如何在OK113i-S开发板上适配一个自己的10寸LCD。

OK113i-S 是一个优秀的开发板，支持lvds 单8，双8显示，最大分辨率1280x800

也支持RG666显示，由于我手头只有lvds 单8，40pin的显示器，今天我就适配一下这个LCD的显示。

显示效果

设备接线

我这个转接板是两部分，左边的是触摸线，右边的是屏幕接线，触摸的调试见另一篇文章。这里只说屏幕的适配;从图上可以看到，液晶屏的排线40pin经过转接板转为20pin接入主板。

首先根据主板使用说明，LVDS接口信息，主板是LVDS双8信号，我这里只有LVDS接口的屏幕，其他工程剩余的，是LVDS单8信号，需要做一些修改。屏幕是10寸的40pinLVDS 单8接口。40pinLVDS 接口经过转接板只有20接口线。下面是关键信息。

主板的LCD接口信息
2-主板接口LVDS-双8.png

LCD的LVDS 40PIN接口信息
1-LVDS-40PIN-单8-LCD接口.png

接口板接口信息定义
30-40-pin-接口.png

我们要做的就是把主板的接口与20pin的转接板连接起来，调整排线的线序，具体做法如下

屏幕接口说明书

代码适配修改

首先找到内核的设备树文件OK113i-C-Linux.dts和 OK113i-C-Common.dtsi

Device/config/chips/t113_i/config/ok113i/目录下有同名的链接文件，都指向同一个文件

根据屏幕说明书，找到屏幕的关键参数,如下图

Default 注释的是原来的内容，1024x600是我的屏幕分辨率,这里面有许多参数，具体的说明如下：我们这里只关心几个即可
lcd注释.png

////////////////////////////////////
Lcd_if: HV模式，见lcd屏幕说明
lcd_lvds_if: 0:single link; 1:dual link
lcd_lvds_mode: 0:NS mode; 1:JEIDA mode;这里是JEIDA显示序列

Lcd_x 分辨率x
Lcd_y 分辨率y
Lcd_width 物理尺寸
Lcd_height 物理尺寸

lcd_hbp: hsync back porch(pixel) + hsync plus width(pixel);
lcd_ht: hsync total cycle(pixel)
lcd_vbp: vsync back porch(line) + vysnc plus width(line)
lcd_vt: vysnc total cycle(line)
lcd_hspw: hsync plus width(pixel)
lcd_vspw: vysnc plus width(pixel)
////////////////////////////////////////

UBOOT的配置文件在这里：
kernel/linux-5.4/arch/arm/boot/dts/uboot-board-lvds.dts

这里看到有看到其他的不同屏幕的配置文件，根据我的屏幕类型lvds，uboot-board-lvds.conf;

修改完后，./build.sh 修改编译选项，重新烧录即可

最后我们截屏看看
使用这个命令可以截屏ok113-Screen.bmp

root@ok113i:/# echo 0 >/sys/class/disp/disp/attr/disp
root@ok113i:/# echo /home/forlinx/ok113-Screen.bmp >/sys/class/disp/disp/attr/

问题总结：

1 buidl前需要整体编译一遍，有问题可以群里提问。
2 buidl内核前先clean，减少修改后不生效的问题。
3 修改后不生效，需要查看UBOOT启动的默认选项。

附录
内核配置文件
编译好的LCD支持内核
编译的LCD支持系统镜像

OK113i-S开发板体验-1开箱和基本使用
 OK113i-S开发板-2适配10寸LCD显示
 OK113i-S开发板-3测试实时系统
 OK113i-S开发板-4视频编解码测试

BSPlayer

感谢电子发烧友论坛和飞凌公司所提供的测试机会。
最早是在20年前用过飞凌的产品2440，知道飞凌是一个芯片产品的方案提供商，自己也从事嵌入式相关的工作，所以此次试用可以增加对飞凌产品更多了解。
OK113i-S开发板的功能齐全，制作工艺成熟，是一个不错的工业级开发板。是采用邮票孔核心板加底板方式，性能稳定，价格便宜。
其详细资料可以访问飞凌的网站：

全志T113处理器设计全国产化工业级T113核心板
 全志T113i开发板国产工业级T113开发板

开发板开箱
收到了OK113i-S开发板，周六联系的，下周一就收到了，飞凌就是有效率
板子有电源，天线2个，USB线，还有一个产品小册子，里面介绍了各种产品特点，这个销售还挺有心的。

设备介绍
T113-i 是一种为多媒体解码平台设计的高级应用处理器。T113-i 集成了64位玄铁C906 RISC-V CPU，双核 Cortex - A7 CPU 1.2G和 HiFi4 DSP，这次测试主要是测试32位双核A7CPU的性能。

特色功能
我用过很多开发板，2440，imx6q，3288,3568 等，这个板子给我感觉有特色的功能有这两个，第一是硬件调试线type-c，省去了使用USB-转串口调试线。下图左边是usb转串口调试线，右边是usb下载接口，一根线两用，方便多了。

第二是uboot里面可以按键切换屏幕类型，如下图显示

连续按2可以显示其他的显示类型，按后就保存。这极大的提高了开发效率，方便显示切换。

界面效果展示
在编译系统时测试程序一起用buildroot系统。下面展示了几个基本系统程序。
系统开机启动一个程序 Matrix_Browser，自己开发时，可以针对这个界面进行裁剪。不过这个系统内存只有512M，app的切换就比较慢。推荐不用这个窗口，直接启动自己的界面。

UBOOT界面

主界面

App界面2

web界面

如果你没有lcd屏幕，用浏览器也可以看，但是只能看到第一屏和命令行的程序。这是因为主界面是个B/S结构

系统开机启动的程序和性能

系统开机运行了ftp程序和sshd，方便大家登录和传输文件，matrix-browser是主界面的进程，可以看到系统内存已经用了一半。这对开发性能是足够的。

开发环境
官方提供了一键式开发环境，安装好开发环境ubuntu20的vmware虚拟机，只需开机，build就ok了。相比之前不需要安装太多软件，大大节省了时间，真是太方便了。如果提供云端的开发环境，那就更人性化了。
系统下载大约需要20G的空间，运行大约需要100G磁盘。

Demo程序
开发板自带几个demo的程序，这些程序展示了系统的一些基本功能。
demo代码位置在：platform/framework/auto/qt_demo Qt 测试程序源码目录，具体的内容在《1-OK113i-S_Linux5.4.61+Qt5.12.2_用户编译手册》里面有详细说明，我发现还有一个目录sdk_dem，里面有更多的demo可供开发参考。

串口程序

AudioRecoder 这个录音程序支持多种录音格式。

Sql程序

SPI 接口

其他还有许多实用的功能，这些功能极大的方便了大家开发自己的app，期待大家去发现。
通过多次启动程序发现，这个板子对于取代串口屏之类的单一应用是绰绰有余，无论是性能还是价格都有绝对的优势，期待有更多的进一步开发。

OK113i-S开发板体验-1开箱和基本使用
 OK113i-S开发板-2适配10寸LCD显示
 OK113i-S开发板-3测试实时系统
 OK113i-S开发板-4视频编解码测试

BSPlayer

前言

本文测试OK113i-S开发板-视频编解码的功能

OK113i-S开发板是支持视频的编解码的，下面是官方介绍的编解码功能

T113-i 是一种为多媒体解码平台设计的高级应用处理器。T113-i 集成了64位玄铁C906 RISC-V CPU，
双核 Cortex - A7 CPU 和 HiFi4 DSP，提供高效的计算能力。
 主要特性
支持 H.265、H.264、MPEG-1/2/4、JPEG 等全格式解码。独立的编码器可以用 JPEG 或 MJPEG 来进行编
码。
 T113-i 集成了 H.265/H.264 4K 解码和 SmartColor2.0 后处理，提供完美的视频娱乐体验。

下面我们来测试一下音视频的编码解码功能。

编解码代码

在系统的代码中，下面是程序的位置

----------------
视频
/sdk/platform/framework/auto/cmd_demo/decoderTest 
/sdk/platform/framework/auto/sdk_demo/decoderTest
/sdk/platform/framework/auto/sdk_demo/encoderTest
/sdk/platform/framework/auto/sdk_demo/fltest_streamPlayer

------------------
音频
/sdk/platform/framework/auto/cmd_demo/audplayer
/sdk/platform/framework/auto/qt_demo/fltest_qt_musicplayer
/sdk/platform/framework/auto/sdk_demo/audioencTest
/sdk/platform/framework/auto/sdk_demo/audplayerTest

编译音视频库

系统的音视频库主要是cedarx 和libcedarc；这个在buuildroot中需要选定。如下图

Target Packages
  Allwinner platform private package select
  Libcedcrc
  Cedarx

微信截图_20231220140841.png

微信截图_20231221103631.png

错误

=================
>>> cedarx  Installing to target
cp -rf /home/forlinx/113/OK113i-linux-sdk/out/t113_i/ok113i/longan/buildroot/build/cedarx/config/_cedarx.conf 
/home/forlinx/113/OK113i-linux-sdk/out/t113_i/ok113i/longan/buildroot/target/etc/cedarx.conf
cp: cannot stat '/home/forlinx/113/OK113i-linux-sdk/out/t113_i/ok113i/longan/buildroot/build/cedarx/config/_cedarx.conf': No such file or directory
make[1]: *** [package/pkg-generic.mk:335: /home/forlinx/113/OK113i-linux-sdk/out/t113_i/ok113i/longan/buildroot/build/cedarx/.stamp_target_installed] Error 1

解决办法

cp -rf /home/forlinx/113/OK113i-linux-sdk/out/t113_i/ok113i/longan/buildroot/build/cedarx/conf/default_cedarx.conf  
/home/forlinx/113/OK113i-linux-sdk/out/t113_i/ok113i/longan/buildroot/build/cedarx/config/_cedarx.conf

./build.sh
./build.sh pack

=============================================
视频解码264

fltest_decoderTest 解码/tmp.h264 为yuv 格式。

root@ok113i:/forlinx/media# ls
1.jpg                1280x720_video3.yuv    tmp.h264
1024x600.rgba        2.jpg                  tmp.h265
1280x720_video0.yuv  2560x1440_dcvideo.yuv  videotestsrc_1280x720.nv21
1280x720_video1.yuv  30s.wav
1280x720_video2.yuv  test.mp3

root@ok113i:/forlinx/media# fltest_decoderTest
INFO   : cedarc <log_set_level:43>: Set log level to 3 from /vendor/etc/cedarc.conf
[2023-12-20 17:35:24] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry adecoder-15 fail!
[2023-12-20 17:35:24] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry vdecoder-9 fail!
INFO   : cedarc <CedarPluginVDInit:79>: register h264 decoder success!
INFO   : cedarc <CedarPluginVDInit:84>: register mjpeg decoder success!
[ 1097.603725] VE: VE real_freq=576000000
[ 1097.603725]
INFO   : cedarc <CedarPluginVDInit:86>: register mpeg2 decoder success!
[2023-12-20 17:35:24] WARNING: awplayer <DlOpenPlugin:112>: Invalid plugin,function CedarPluginVDInit not found.
INFO   : cedarc <CedarPluginVDInit:92>: register mpeg4dx decoder success!
INFO   : cedarc <CedarPluginVDInit:79>: register mpeg4H263 decoder success!
INFO   : cedarc <CedarPluginVDInit:90>: register mpeg4Normal decoder success!
INFO   : cedarc <CedarPluginVDInit:74>: register vc1 decoder success!
INFO   : cedarc <CedarPluginVDInit:85>: register h265 decoder success!
[2023-12-20 17:35:24] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry plugin-0 fail!
decoderTest version:V2.0.20220506
decoderTest intputFile:/forlinx/media/tmp.h264
[D]singleDecoderH264Test                 ================================
[D]singleDecoderH264Test                 ====     CedarC  Decoder    ====
[D]singleDecoderH264Test                 ====  singleDecoderTest cbk ====
[D]singleDecoderH264Test                 ================================
[E][decoderTest.cpp]singleDecoderH264Test line:271 open intputFile:/forlinx/media/tmp.h264
[E][decoderTest.cpp]singleDecoderH264Test line:294 open outputFile:/tmp/800x480nv21_sgl.yuv
new AWVideoDecoderImpl() version:V2.0.20220506
sdk_memory version:V2.0.20220506
DEBUG  : ionAlloc <__GetIonMemOpsS:833>: *** get __GetIonMemOpsS ***
INFO   : cedarc <VeInitialize:1307>: *** ic_version = 0x1301000010210,
DEBUG  : cedarc <VeInitialize:1347>: *** nPhyOffset = 0x0
DEBUG  : ionAlloc <ion_alloc_open2:177>: pid: 1559, g_context = 0x28b3b8

DEBUG  : ionAlloc <ion_alloc_open2:204>: ion alloc open ok
DEBUG  : cedarc <CdcIniParserInit:41>: load conf file /etc/cedarc.conf ok!

INFO   : cedarc <log_set_level:43>: Set log level to 5 from /vendor/etc/cedarc.conf
ERROR  : cedarc <DebugCheckConfig:316>: now cedarc log level:5
WARNING: cedarc <InitializeVideoDecoder:619>: warning: the nDeInterlaceHoldingFrameBufferNum is 0
[D]singleDecoderH264Test decode process[0/821226]
======================= ret:-6  
[D]singleDecoderH264Test decode process[815936/821226]
offset>(size-4)
[D]decoderDataReady decode write[384000/192000]
======================= ret:3
output file is saved:/tmp/

=============================================
视频解码h265

demoVdecoder 这个文件失败

==================================

ok113i:/forlinx/media# demoVdecoder -i /forlinx/media/tmp.h265 -o dec265.yuv
INFO   : cedarc <log_set_level:43>: Set log level to 3 from /vendor/etc/cedarc.conf
[2023-12-20 19:28:03] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry adecoder-15 fail!
[2023-12-20 19:28:03] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry vdecoder-9 fail!
INFO   : cedarc <CedarPluginVDInit:79>: register h264 decoder success!
INFO   : cedarc <CedarPluginVDInit:84>: register mjpeg decoder success!
INFO   : cedarc <CedarPluginVDInit:86>: register mpeg2 decoder success!
[2023-12-20 19:28:03] WARNING: awplayer <DlOpenPlugin:112>: Invalid plugin,function CedarPluginVDInit not found.
INFO   : cedarc <CedarPluginVDInit:92>: register mpeg4dx decoder success!
INFO   : cedarc <CedarPluginVDInit:79>: register mpeg4H263 decoder success!
INFO   : cedarc <CedarPluginVDInit:90>: register mpeg4Normal decoder success!
INFO   : cedarc <CedarPluginVDInit:74>: register vc1 decoder success!
INFO   : cedarc <CedarPluginVDInit:85>: register h265 decoder success!
[2023-12-20 19:28:03] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry plugin-0 fail!
[2023-12-20 19:28:03] DEBUG  : awplayer <AwStreamInit:99>: aw stream init...
[2023-12-20 19:28:03] DEBUG  : awplayer <DemoHelpInfo:1074>:  ==== CedarX linux decoder demo help start =====
[2023-12-20 19:28:03] DEBUG  : awplayer <DemoHelpInfo:1075>:  -h or --help to show the demo usage
[2023-12-20 19:28:03] DEBUG  : awplayer <DemoHelpInfo:1076>:  demo created by zouwenhuan, allwinnertech/AL3
[2023-12-20 19:28:03] DEBUG  : awplayer <DemoHelpInfo:1077>:  email: zouwenhuan@allwinnertech.com
[2023-12-20 19:28:03] DEBUG  : awplayer <DemoHelpInfo:1078>:  ===== CedarX linux decoder demo help end ======
[2023-12-20 19:28:03] DEBUG  : awplayer <main:1254>: nDecoderNum = 1
[2023-12-20 19:28:03] DEBUG  : awplayer <ChannelThread:1093>: ChannelThread 11, 0
[2023-12-20 19:28:03] DEBUG  : awplayer <ParseArgument:193>:  get input file: file:///forlinx/media/tmp.h265
[2023-12-20 19:28:03] DEBUG  : awplayer <ParseArgument:210>:  get save pic path: dec265.yuv
DEBUG  : ionAlloc <__GetIonMemOpsS:833>: *** get __GetIonMemOpsS ***
INFO   : cedarc <VeInitialize:1307>: *** ic_version = 0x1301000010210,
DEBUG  : cedarc <VeInitialize:1347>: *** nPhyOffset = 0x0
DEBUG  : ionAlloc <ion_alloc_open2:177>: pid: 1773, g_context = 0xb5d02528

DEBUG  : ionAlloc <ion_alloc_open2:204>: ion alloc open ok
[2023-12-20 19:28:03] DEBUG  : awplayer <CdxParserPrepare:778>: source uri 'file:///forlinx/media/tmp.h265'
[2023-12-20 19:28:03] DEBUG  : awplayer <__FileStreamConnect:407>: (5/0/1133141) path:'file:///forlinx/media/tmp.h265'
[2023-12-20 19:28:03] ERROR  : CdxFlacParser <__FlacParserProbe:1133>: Flac probe failed.
[2023-12-20 19:28:03] WARNING: awplayer <Mp3Probe:854>: Wav parser : no dice, no valid sequence of frames found.
[2023-12-20 19:28:03] WARNING: awplayer <Mp3Probe:854>: Wav parser : no dice, no valid sequence of frames found.frames found.
[2023-12-20 19:28:03] WARNING: awplayer <Mp3Probe:854>: Wav parser : no dice, no valid sequence offrames found.
[2023-12-20 19:28:03] WARNING: awplayer <Mp3Probe:854>: Wav parser : no dice, no valid sequence of frames found.
[2023-12-20 19:28:03] DEBUG  : awplayer <__WvParserProbe:575>: __WvParserProbe:
[2023-12-20 19:28:03] DEBUG  : awplayer <__WvParserProbe:575>: __WvParserProbe:
[2023-12-20 19:28:03] DEBUG  : awplayer <__WvParserProbe:575>: __WvParserProbe:
[2023-12-20 19:28:03] DEBUG  : awplayer <__WvParserProbe:575>: __WvParserProbe:
[2023-12-20 19:28:03] ERROR  : awplayer <__G729ParserProbe:290>: g729 SYNC_WORD probe failed.
[2023-12-20 19:28:03] ERROR  : awplayer <__Id3v2ParserProbe:330>: Probe ID3_header loss sync...
[2023-12-20 19:28:03] WARNING: awplayer <CdxParserCreate:711>: Sorry, I don't know what it is!
[2023-12-20 19:28:03] WARNING: awplayer <CdxParserOpen:756>: should not be here.
[2023-12-20 19:28:03] ERROR  : awplayer <CdxParserPrepare:789>: open parser fail, uri(file:///forlinx/media/tmp.h265)
[2023-12-20 19:28:03] ERROR  : awplayer <initDecoder:278>:  decoder open parser error nRet = -1, Decoder->parser: (nil)
[2023-12-20 19:28:03] ERROR  : awplayer <ChannelThread:1156>:  decoder demom initDecoder error

=============================================

我们修改decoderTest这个程序，使它能解码h265的格式，其中下面代码红色是我修改的。

source ~/113/OK113i-linux-sdk/.buildconfig
~/113/OK113i-linux-sdk/platform/framework/auto/sdk_demo/decoderTest$ make

==============================================

//decoderTest 265
int main(int argc, char** argv)
{
    printf("decoderTest265 version:%s\n", MODULE_VERSION);
    /******** begin set the default encode param ********/
    memset(&decodeParam, 0, sizeof(decodeParam));
    memset(&testParam, 0, sizeof(testParam));

    decodeParam.srcW = 800;
    decodeParam.srcH = 480;
    decodeParam.dstW = 800;
    decodeParam.dstH = 480;
    decodeParam.rotation = Angle_0;
    decodeParam.scaleRatio = ScaleNone;
    decodeParam.codecType = CODEC_H265;
    decodeParam.pixelFormat = PIXEL_NV21;

    testParam.testTimes = 1;
    testParam.testWay = 0;
    strcpy((char*)testParam.intputFile,        "/tmp/tmp.h265");
strcpy((char*)testParam.outputFile,        "/tmp/dec265_out.yuv");

================================================================

Makefile的修改

all: $(Target) 
$(Target) : decoderTest.cpp 
	$(CPP) decoderTest.cpp -o $(Target)  $(LIBS) $(LDFLAGS) -lpthread $(CXXFLAGS)
	$(CPP) decoderTest265.cpp -o $(Target)265  $(LIBS) $(LDFLAGS) -lpthread $(CXXFLAGS)
	@echo "generate $(Target) success!!!"
	@cp -f $(Target)    $(INSTATLL_PATH)
	@cp -f $(Target)265 $(INSTATLL_PATH)
	@echo -e '\e[1;33m cp -f $(Target) $(INSTATLL_PATH) \e[0m'

=============================================
测试解码效果

./decoderTest265
INFO   : cedarc <log_set_level:43>: Set log level to 3 from /vendor/etc/cedarc.conf
[2023-12-21 01:51:19] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry adecoder-15 fail!
[2023-12-21 01:51:19] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry vdecoder-9 fail!
INFO   : cedarc <CedarPluginVDInit:79>: register h264 decoder success!
INFO   : cedarc <CedarPluginVDInit:84>: register mjpeg decoder success!
[ 3213.535493] VE: VE real_freq=576000000
[ 3213.535493]
INFO   : cedarc <CedarPluginVDInit:86>: register mpeg2 decoder success!
[2023-12-21 01:51:19] WARNING: awplayer <DlOpenPlugin:112>: Invalid plugin,function CedarPluginVDInit not found.
INFO   : cedarc <CedarPluginVDInit:92>: register mpeg4dx decoder success!
INFO   : cedarc <CedarPluginVDInit:79>: register mpeg4H263 decoder success!
INFO   : cedarc <CedarPluginVDInit:90>: register mpeg4Normal decoder success!
INFO   : cedarc <CedarPluginVDInit:74>: register vc1 decoder success!
INFO   : cedarc <CedarPluginVDInit:85>: register h265 decoder success!
[2023-12-21 01:51:19] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry plugin-0 fail!
decoderTest265 version:V2.0.20220506
intputFile  :/tmp/tmp.h265
outputFile  :/tmp/d5_out.yuv
[D]singleDecoderTest             ================================
[D]singleDecoderTest             ====     CedarC  Decoder    ====
[D]singleDecoderTest             ====  singleDecoderTest cbk ====
[D]singleDecoderTest             ================================
new AWVideoDecoderImpl() version:V2.0.20220506
sdk_memory version:V2.0.20220506
DEBUG  : ionAlloc <__GetIonMemOpsS:833>: *** get __GetIonMemOpsS ***
INFO   : cedarc <VeInitialize:1307>: *** ic_version = 0x1301000010210,
DEBUG  : cedarc <VeInitialize:1347>: *** nPhyOffset = 0x0
DEBUG  : ionAlloc <ion_alloc_open2:177>: pid: 1597, g_context = 0x198c480

DEBUG  : ionAlloc <ion_alloc_open2:204>: ion alloc open ok
DEBUG  : cedarc <CdcIniParserInit:41>: load conf file /etc/cedarc.conf ok!

INFO   : cedarc <log_set_level:43>: Set log level to 5 from /vendor/etc/cedarc.conf
ERROR  : cedarc <DebugCheckConfig:316>: now cedarc log level:5
WARNING: cedarc <InitializeVideoDecoder:619>: warning: the nDeInterlaceHoldingFrameBufferNum is 0
[D]singleDecoderTest decode process[0/1133141]
[W][decoderTest265.cpp]singleDecoderTest line:514 decode failed,error code:-6
[D]singleDecoderTest decode process[28/1133141]
[W][decoderTest265.cpp]singleDecoderTest line:514 decode failed,error code:-6
[D]singleDecoderTest decode process[86/1133141]

[D]singleDecoderTest decode process[1127265/1133141]
offset>(size-4)
WARNING: cedarc <HevcDecoderAddPtsToList:933>:  h265 pts list is full
[D]decoderDataReady decode write[384000/192000]
[D]printfArgs    -i:/tmp/tmp.h265
[D]printfArgs    -s:[800x480]
[D]printfArgs    -f:278
[D]printfArgs    -p:5
[D]printfArgs    -o:/tmp/d5_out.yuv
output file is saved:/tmp/d5_out.yuv
~ AWVideoDecoderImpl()
Test 1 times.

=============================================
视频编码

root@ok113i:/forlinx/media# encoderTest
encoderTest version:V2.0.2022050[ 5100.284684] VE: VE real_freq=576000000
[ 5100.284684]
6
intputFile /tmp/800_480.yuv
outputFile /tmp/enc720_30p.265
outputFile  CODEC_H265
[D]singleEncoderTest             ================================
[D]singleEncoderTest             ====     CedarC  Encoder    ====
[D]singleEncoderTest             ====    singleDecoderTest    ====
[D]singleEncoderTest             ================================
[D]printfArgs    -s:800x480
[D]printfArgs    -n:1
[D]printfArgs    -f:3
[D]printfArgs    -p:1
[D]printfArgs    -r:30
[D]printfArgs    -d:800x480
sdk_memory version:V2.0.20220506
INFO   : cedarc <VeInitialize:1307>: *** ic_version = 0x1301000010210,
[D]encodeFile malloc pIonMem->vir=0xb6a63000!
new AWVideoEncoderImpl() version:V2.0.20220506
sdk_memory version:V2.0.20220506
INFO   : cedarc <VeInitialize:1307>: *** ic_version = 0x1301000010210,
ERROR  : cedarc <H265EncOpen:6246>: error: the driver do not support the ic 1667
[E][AWVidoeEncoder.cpp]init line:389 VideoEncCreate error, return[E][encoderTest.cpp]encodeFile line:412 init:ffffffff
~ AWVideoEncoderImpl()
ERROR  : cedarc <ReleaseAllocInputBuffer:456>: ReleaseAllocInputBuffer, pEncoder is NULL
[D]printfArgs    -s:800x480
[D]printfArgs    -n:1
[D]printfArgs    -f:3
[D]printfArgs    -p:1
[D]printfArgs    -r:30
[D]printfArgs    -d:800x480
output file is saved:/tmp/enc720_30p.265
Test 1 times.

编码失败，文件为0

=============================================
音频编码

root@ok113i:/forlinx/media# cp 30s.wav /tmp/test.wav
root@ok113i:/forlinx/media# audioenc_test
INFO   : cedarc <log_set_level:43>: Set log level to 3 from /vendor/etc/cedarc.conf
[2023-12-20 18:48:57] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry adecoder-15 fail!
[2023-12-20 18:48:57] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry vdecoder-9 fail!
INFO   : cedarc <CedarPluginVDInit:79>: register h264 decoder success!
INFO   : cedarc <CedarPluginVDInit:84>: register mjpeg decoder success!
INFO   : cedarc <CedarPluginVDInit:86>: register mpeg2 decoder success!
[2023-12-20 18:48:57] WARNING: awplayer <DlOpenPlugin:112>: Invalid plugin,function CedarPluginVDInit not found.
INFO   : cedarc <CedarPluginVDInit:92>: register mpeg4dx decoder success!
INFO   : cedarc <CedarPluginVDInit:79>: register mpeg4H263 decoder success!
INFO   : cedarc <CedarPluginVDInit:90>: register mpeg4Normal decoder success!
INFO   : cedarc <CedarPluginVDInit:74>: register vc1 decoder success!
INFO   : cedarc <CedarPluginVDInit:85>: register h265 decoder success!
[2023-12-20 18:48:57] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry plugin-0 fail!
[2023-12-20 18:48:57] DEBUG  : awplayer <AwStreamInit:99>: aw stream init...
[2023-12-20 18:48:57] DEBUG  : awplayer <AwMuxerInit:53>: aw muxer init ..
[2023-12-20 18:48:57] DEBUG  : awplayer <AwMuxerInit:62>: aw muxer size:4
audioenc test version:V2.0.20220506
12-20 18:48:57.953  AudioEnc(W) : AudioEncInit success
fopen /tmp/test.wav OK
fopen /tmp/test.mp3 ok
12-20 18:48:57.955  AudioEnc(E) : audio encode ERR_AUDIO_ENC_PCMUNDERFLOW
12-20 18:48:58.001  AudioEnc(E) : audio encode ERR_AUDIO_ENC_PCMUNDERFLOW
12-20 18:49:05.031  AudioEnc(E) : audio encode ERR_AUDIO_ENC_PCMUNDERFLOW
12-20 18:49:05.077  AudioEnc(E) : audio encode ERR_AUDIO_ENC_PCMUNDERFLOW
12-20 18:49:05.123  AudioEnc(E) : audio encode ERR_AUDIO_ENC_PCMUNDERFLOW
12-20 18:49:05.169  AudioEnc(E) : audio encode ERR_AUDIO_ENC_PCMUNDERFLOW
file end exit.
audioenc test run finish

=============================================
音频解码

下图是
fltest_qt_musicplayer
微信图片_20231220112009.jpg

root@ok113i:/forlinx/media# fltest_audioplayer   /forlinx/media/test.mp3
[2023-12-20 19:02:26] WARNING: awplayer <log_set_level:30>: Set log level to 3
[2023-12-20 19:02:26] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry adecoder-15 fail!
[2023-12-20 19:02:26] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry vdecoder-9 fail!
INFO   : cedarc <CedarPluginVDInit:79>: register h264 decoder success!
INFO   : cedarc <CedarPluginVDInit:84>: register mjpeg decoder success!
INFO   : cedarc <CedarPluginVDInit:86>: register mpeg2 decoder success!
[2023-12-20 19:02:26] WARNING: awplayer <DlOpenPlugin:112>: Invalid plugin,function CedarPluginVDInit not found.
INFO   : cedarc <CedarPluginVDInit:92>: register mpeg4dx decoder success!
INFO   : cedarc <CedarPluginVDInit:79>: register mpeg4H263 decoder success!
INFO   : cedarc <CedarPluginVDInit:90>: register mpeg4Normal decoder success!
INFO   : cedarc <CedarPluginVDInit:74>: register vc1 decoder success!
INFO   : cedarc <CedarPluginVDInit:85>: register h265 decoder success!
[2023-12-20 19:02:26] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry plugin-0 fail!
[2023-12-20 19:02:26] DEBUG  : awplayer <AwStreamInit:99>: aw stream init...
[2023-12-20 19:02:26] DEBUG  : awplayer <AwMuxerInit:53>: aw muxer init ..
[2023-12-20 19:02:26] DEBUG  : awplayer <AwMuxerInit:62>: aw muxer size:4
set url:/forlinx/media/test.mp3
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerCreate:216>: XPlayerCreate.
[2023-12-20 19:02:26] DEBUG  : awplayer <LogVersionInfo:34>:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CedarX <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
tag   : cedarx
branch: stable_v2.8_common
commit: 967535b8ff6a073cb4f38e85a4ae5fa6008014d8
date  : Mon, 15 May 2017 01:30:22 +0000 (09:30 +0800)
author:
----------------------------------------------------------------------

xfang tinyalsa SoundDeviceCreate
[2023-12-20 19:02:26] DEBUG  : awplayer <LayerCreate_DE:1540>: libsdk_player version:V2.0.20220516, LayerCreate

(getInstance 93) version:V2.0.20220506
init chwd sucess !
(HwDisplay 279)
(hwd_init 1258)
[2023-12-20 19:02:26] DEBUG  : awplayer <LayerCreate_DE:1593>: screen:w 1024, screen:h 600 disp
sdk_memory version:V2.0.20220506
DEBUG  : ionAlloc <__GetIonMemOpsS:833>: *** get __GetIonMemOpsS ***
INFO   : cedarc <VeInitialize:1307>: *** ic_version = 0x1301000010210,
DEBUG  : cedarc <VeInitialize:1347>: *** nPhyOffset = 0x0
DEBUG  : ionAlloc <ion_alloc_open2:177>: pid: 1608, g_context = 0x274370

DEBUG  : ionAlloc <ion_alloc_open2:204>: ion alloc open ok
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerSetVideoSurfaceTexture:597>: setVideoSurfaceTexture, surface = 0x26fc60
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerThread:1977>: process message XPLAYER_COMMAND_SET_SURFACE.
[2023-12-20 19:02:26] DEBUG  : awplayer <SubtitleCreate:88>: ==== pCallback: 0xb67e3574, pUser: 0x26b280
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerThread:2038>: ==== process message XPLAYER_COMMAND_SET_SUBCTRL.
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerSetDeinterlace:718>: set deinterlace
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerThread:2053>: ==== process message XPLAYER_COMMAND_SET_SUBCTRL.
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerSetDataSourceUrl:462>: setDataSource(url), url='/forlinx/media/test.mp3'
[2023-12-20 19:02:26] INFO   : awplayer <XPlayerThread:1814>: process message XPLAYER_COMMAND_SET_SOURCE.
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerPrepare:767>: prepare
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerThread:2067>: process message XPLAYER_COMMAND_PREPARE. mPriData->mStatus: 1
[2023-12-20 19:02:26] DEBUG  : demuxComponent <DemuxThread:1792>: process message DEMUX_COMMAND_PREPARE.
[2023-12-20 19:02:26] DEBUG  : awplayer <CdxParserPrepare:778>: source uri 'file:///forlinx/media/test.mp3'
[2023-12-20 19:02:26] DEBUG  : awplayer <__FileStreamConnect:407>: (6/0/4818092) path:'file:///forlinx/media/test.mp3'
[2023-12-20 19:02:26] DEBUG  : awplayer <CdxParserCreate:668>: parser node is id3v2.
[2023-12-20 19:02:26] DEBUG  : awplayer <CdxParserCreate:717>: Good, it's 'id3v2'
[2023-12-20 19:02:26] DEBUG  : awplayer <CdxParserCreate:717>: Good, it's 'mp3'
[2023-12-20 19:02:26] WARNING: awplayer <CdxMp3ParserControl:1267>: not implement...(18)
[2023-12-20 19:02:26] DEBUG  : awplayer <PrintMediaInfo:468>: *********PrintMediaInfo begin*********
[2023-12-20 19:02:26] DEBUG  : awplayer <PrintMediaInfo:482>: fileSize = 4818092, bSeekable = 1, duration = 300016, audioNum = 1, videoNum = 0, subtitleNum = 0
[2023-12-20 19:02:26] DEBUG  : awplayer <PrintMediaInfo:520>: ***Audio[0]*** eCodecFormat = 0x3, eSubCodecFormat = 0x0, nChannelNum = 2, nBitsPerSample = 0, nSampleRate = 44100
[2023-12-20 19:02:26] DEBUG  : awplayer <PrintMediaInfo:536>: *********P[ 2124.461204] [SNDCODEC][sunxi_card_hw_params][651]:stream_flag: 0
rintMediaInfo end*********
[2023-12-20 19:02:26] DEBUG  : demuxComponent <PrintMediaInfo:468>: *********PrintMediaInfo begin*********
[2023-12-20 19:02:26] DEBUG  : demuxComponent <PrintMediaInfo:482>: fileSize = 4818092, bSeekable = 1, duration = 300016, audioNum = 1, videoNum = 0, subtitleNum = 0
[2023-12-20 19:02:26] DEBUG  : demuxComponent <PrintMediaInfo:520>: ***Audio[0]*** eCodecFormat = 0x3, eSubCodecFormat = 0x0, nChannelNum = 2, nBitsPerSample = 0, nSampleRate = 44100
[2023-12-20 19:02:26] DEBUG  : demuxComponent <PrintMediaInfo:536>: *********PrintMediaInfo end*********
[2023-12-20 19:02:26] DEBUG  : awplayer <AudioRenderCompSetAudioSink:195>: audio render component setting AudioSink
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerPrepareAsync:747>: prepareAsync
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerThread:2067>: process message XPLAYER_COMMAND_PREPARE. mPriData->mStatus: 4
12-20 19:02:26.531  (W) AUTPlayer info: prepare ok.

[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerStart:797>: start
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerThread:2275>: process message XPLAYER_COMMAND_START.
[2023-12-20 19:02:26] DEBUG  : awplayer <[ 2124.569726] [SNDCODEC][sunxi_card_hw_params][651]:stream_flag: 0
PlayerStart:740>: player start
[2023-12-20 19:02:26] DEBUG  : awplayer <BaseCompPostAndWait:61>: audio decoder receive cmd: start
(Allwinner Audio Middle Layer),line(971) : Create Decoder!!=====
[2023-12-20 19:02:26] DEBUG  : awplayer <handleStart:1086>: Create libadecoder success...
(Allwinner Audio Middle Layer),line(603) : AudioDec_Installaudiolib ok
(Allwinner Audio Middle Layer),line(606) : audio decoder init start ...
(AllwinnerAlibs),line(50) :
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Audio <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
tag   : audiocodec-v1.2
branch: new
commit: 3ba65962c01cbf1280ddda19d843009b6ef8ce85
date  : Tue Jan 8 16:25:27 2019 +0800
----------------------------------------------------------------------

(AllwinnerAlibs),line(700) : ----Loading so success!
(AllwinnerAlibs),line(902) : *************pAudioStreamInfo start******************
(AllwinnerAlibs),line(903) : eCodecFormat         :id(3), name(mpeg layer-III)
(AllwinnerAlibs),line(904) : eSubCodecFormat      :0
(AllwinnerAlibs),line(905) : nChannelNum          :2
(AllwinnerAlibs),line(906) : nBitsPerSample       :16
(AllwinnerAlibs),line(907) : nSampleRate          :44100
(AllwinnerAlibs),line(908) : nAvgBitrate          :128000
(AllwinnerAlibs),line(909) : nMaxBitRate          :128000
(AllwinnerAlibs),line(910) : nFileSize            :0
(AllwinnerAlibs),line(911) : eAudioBitstreamSource:0
(AllwinnerAlibs),line(912) : eDataEncodeType      :0
(AllwinnerAlibs),line(913) : nCodecSpecificDataLen:0
(AllwinnerAlibs),line(914) : pCodecSpecificData   :(nil)
(AllwinnerAlibs),line(915) : nFlags               :0
(AllwinnerAlibs),line(916) : nBlockAlign          :0
(AllwinnerAlibs),line(917) : *************pAudioStreamInfo end  ******************
(Allwinner Audio Libs),line(27) : init successs...
(Allwinner Audio Middle Layer),line(614) : AUDIO DECODE INIT OK...0
[2023-12-20 19:02:26] DEBUG  : awplayer <BaseCompPostAndWait:61>: audio render receive cmd: start
[2023-12-20 19:02:26] INFO   : awplayer <handleStart:295>: audio render process start message.
[2023-12-20 19:02:26] DEBUG  : awplayer <initSoundDevice:478>: init sound device.
[2023-12-20 19:02:26] DEBUG  : awplayer <initSoundDevice:486>: set sound devide param, sample rate = 44100, channel num = 2.
[2023-12-20 19:02:26] DEBUG  : demuxComponent <DemuxThread:2053>: process message DEMUX_COMMAND_START.
[2023-12-20 19:02:26] WARNING: awplayer <callbackProcess:3656>: message 0x40a not handled.
======================================
|Space  key | start or pause    |
|Left   key | seek backend      |
|Right  key | seek forward      |
|Up     key | audio volume larger       |
|Down   key | audio volume small        |
======================================
[2023-12-20 19:02:26] DEBUG  : awplayer <startSoundDevice:684>: start sound device.
[2023-12-20 19:02:26] DEBUG  : awplayer <startSoundDevice:686>: audio device start end

[2023-12-20 19:02:26] DEBUG  : awplayer <CallbackProcess:2959>: first audio pts = 0
[2023-12-20 19:02:26] WARNING: awplayer <checkSampleRate:644>: sample rate change from 44100 to 44100.
[2023-12-20 19:02:26] WARNING: awplayer <checkSampleRate:646>: channel num change from 2 to 2.
[2023-12-20 19:02:26] WARNING: awplayer <checkSampleRate:648>: bitPerSample num change from 16 to 16.
[2023-12-20 19:02:26] WARNING: awplayer <checkSampleRate:650>: if need direct out put flag change from 0 to 1.
[2023-12-20 19:02:26] WARNING: awplayer <checkSampleRate:652>: data type change from 1 to 1.
[2023-12-20 19:02:26] WARNING: awplayer <checkSampleRate:671>: start sound devide again because samplaRate or channelNum change
[2023-12-20 19:02:26] INFO   : demuxComponent <DemuxThread:3226>: waiting for audio stream buffer.
[2023-12-20 19:02:26] INFO   : demuxComponent <DemuxThread:3226>: waiting for audio stream buffer.
[2023-12-20 19:02:27] INFO   : demuxComponent <DemuxThread:3226>: waiting for audio stream buffer.
[2023-12-20 19:02:27] INFO   : demuxComponent <DemuxThread:3226>: waiting for audio stream buffer.

=============================================
测试结果

视频 h264的文件能解，h265也可以解了；编码h264不正常。
音频编码解码都可以正常运行。Sdk和测试app都可以运行，但是具体的编码格式没有详细测试。

如有错误，欢迎指正，一起学习

OK113i-S开发板体验-1开箱和基本使用
 OK113i-S开发板-2适配10寸LCD显示
 OK113i-S开发板-3测试实时系统
 OK113i-S开发板-4视频编解码测试

BSPlayer

前言
OK113i-S开发板上测试实时linux系统的效果

Linux下的实时系统有三种方案：这三种方案各有优缺点

1.PREEMPT-RT：PREEMPT-RT是一个基于Linux内核的实时补丁，也被称为Real-Time（RT）补丁。它通过增加内核的可抢占性，使得Linux内核能够实现实时性能。PREEMPT-RT补丁提供了可配置的实时选项，可以根据应用程序的需求进行调整。这个版本跟内核的版本匹配很细致，几乎每一个内核的小版本都有配套的补丁。

2.Xenomai：Xenomai提供了一个实时框架，为Linux操作系统添加了实时性能。它支持具有硬实时和软实时要求的应用程序，并通过分时多任务和抢占式调度来提供可预测性。
这个系统就版本变化比较多，4之前是pipe，5后面是Dovetail，而且与内核版本匹配不太紧密，

3.RTAI（Real-Time Application Interface）：RTAI是一个开源实时应用程序接口，提供了类似API的接口和实时任务调度。它在Linux内核上运行，并通过插入抢占式调度器来实现实时性能。

这里我们测试一下PREEMPT-RT的效果。

编译desktop系统

首先我们编译一个desktop的系统版本，官方提供的镜像是默认的PREEMPT-RT的。
默认配置如下

我们选择Desktop，

选择Desktop，

然后退出保存。

Cp  ~/OK113i-linux-sdk/kernel/linux-5.4/arch/arm/configs/OK113I_linux_defconfig  ok-def
Cp .config  ~/OK113i-linux-sdk/kernel/linux-5.4/arch/arm/configs/OK113I_linux_defconfig
~/OK113i-linux-sdk/build.sh kernel

编译测试程序

为了测试对比效果，我们还需要编译一个测试程序rt-test

进入OK113i-linux-sdk/buildroot/buildroot-201902
make menuconfig ARCH=arm

选择
   Target packages
     Debugging，profileing and benchmark

然后OK113i-linux-sdk/buildroot/buildroot-201902/build.sh

最后 ~/OK113i-linux-sdk/build.sh  pack
Cp  ~/OK113i-linux-sdk/out/t113_i_linux_ok113i_uart0.img  t113-desk.img

测试效果

我们测试两个系统镜像，一个是desktop版本t113-desk.img，
一个是PREEMPT-RT版本，下面是运行的测试结果

我们这里就比较几个简单的命令coremark，和cyclictest
cyclictest -t 5 -p 80 ，5个任务跑80个进程，计算时间

==============
Desktop

root@ok113i:/#uname -a
Linux ok113i 5.4.61 #3 SMP Mon Dec 18 14:42:10 CST 2023 armv7l GNU/Linux

root@ok113i:/# /usr/bin/coremark
2K performance run parameters for coremark.
CoreMark Size    : 666
Total ticks      : 17257
Total time (secs): 17.257000
Iterations/Sec   : 3476.849974
Iterations       : 60000
Compiler version : GCC7.3.1 20180425 [linaro-7.3-2018.05 revision d29120a424ecfbc167ef90065c0eeb7f91977701]
Compiler flags   : -O2   -lrt
Memory location  : Please put data memory location here
                        (e.g. code in flash, data on heap etc)
seedcrc          : 0xe9f5
[0]crclist       : 0xe714
[0]crcmatrix     : 0x1fd7
[0]crcstate      : 0x8e3a
[0]crcfinal      : 0xbd59
Correct operation validated. See readme.txt for run and reporting rules.
CoreMark 1.0 : 3476.849974 / GCC7.3.1 20180425 [linaro-7.3-2018.05 revision d29120a424ecfbc167ef90065c0eeb7f91977701] -O2   -lrt / Heap

root@ok113i:/# cyclictest -t 5 -p 80 
 //5个任务跑80个进程，计算时间
# /dev/cpu_dma_latency set to 0us
policy: fifo: loadavg: 1.09 0.80 0.38 2/70 1575
policy: fifo: loadavg: 1.17 0.82 0.39 1/68 1576
T: 0 ( 1517) P:80 I:1000 C:   9393 Min:     10 Act:   20 Avg:   15 Max:     152
T: 0 ( 1517) P:80 I:1000 C:  11554 Min:     10 Act:   11 Avg:   15 Max:     754
T: 1 ( 1518) P:80 I:1500 C:   7702 Min:     10 Act:   11 Avg:   14 Max:     140
T: 2 ( 1519) P:80 I:2000 C:   5773 Min:     10 Act:   11 Avg:   16 Max:    4850
T: 3 ( 1520) P:80 I:2500 C:   4619 Min:     10 Act:   12 Avg:   17 Max:    5174
T: 4 ( 1521) P:80 I:3000 C:   3850 Min:     10 Act:   11 Avg:   16 Max:    4726
 Disable gpadc0
policy: fifo: loadavg: 1.06 0.85 0.43 1/72 1634

===========
PREEMPT-RT

root@ok113i:/# coremark
2K performance run parameters for coremark.
CoreMark Size    : 666
Total ticks      : 17200
Total time (secs): 17.200000
Iterations/Sec   : 3488.372093
Iterations       : 60000
Compiler version : GCC7.3.1 20180425 [linaro-7.3-2018.05 revision d29120a424ecfbc167ef90065c0eeb7f91977701]
Compiler flags   : -O2   -lrt
Memory location  : Please put data memory location here
                        (e.g. code in flash, data on heap etc)
seedcrc          : 0xe9f5
[0]crclist       : 0xe714
[0]crcmatrix     : 0x1fd7
[0]crcstate      : 0x8e3a
[0]crcfinal      : 0xbd59
Correct operation validated. See readme.txt for run and reporting rules.
CoreMark 1.0 : 3488.372093 / GCC7.3.1 20180425 [linaro-7.3-2018.05 revision d29120a424ecfbc167ef90065c0eeb7f91977701] -O2   -lrt / Heap

root@ok113i:/# cyclictest -t 5 -p 80 
 //5个任务跑80个进程，计算时间
# /dev/cpu_dma_latency set to 0us
policy: fifo: loadavg: 1.00 0.67 0.30 1/79 1651

T: 0 ( 1647) P:80 I:1000 C:  85352 Min:     13 Act:   16 Avg:   16 Max:      57
T: 1 ( 1648) P:80 I:1500 C:  56901 Min:     13 Act:   16 Avg:   15 Max:      74
T: 2 ( 1649) P:80 I:2000 C:  42671 Min:     13 Act:   16 Avg:   15 Max:      39
T: 3 ( 1650) P:80 I:2500 C:  34136 Min:     13 Act:   20 Avg:   16 Max:      51
T: 4 ( 1651) P:80 I:3000 C:  28447 Min:     13 Act:   16 Avg:   16 Max:      80

=========

可以看到 Total time相差不大，但是 cyclictest 的Max时间是大大减少的。可看到Linux-RT内核与普通Linux内核相比，系统延时更加稳定，平均延时、最大延时更低，系统实时性更佳

PREEMPT-RT和xenomai

在buildroot里面，大家可以选择xenomai系统进行选择，对比效果

微信截图_20231219163741.png

这两个的测试结果就不太明显，因为我们的软件没有严格限制，这里就不详细介绍了。感兴趣的可以学习相关内容。

附录
实时系统镜像
Dedktop系统镜像

OK113i-S开发板体验-1开箱和基本使用
 OK113i-S开发板-2适配10寸LCD显示
 OK113i-S开发板-3测试实时系统
 OK113i-S开发板-4视频编解码测试

BSPlayer

@dudu152 是的，因为我这个屏幕的40pin排线无法接入板子，只能通过转接板接入。
这个转接板是我们另一个荣品的产品用的，我这里借用过来的。

BSPlayer

@fengdao 应该不能，核心板外观都不一样

BSPlayer

前言

本文测试OK113i-S开发板-视频编解码的功能

OK113i-S开发板是支持视频的编解码的，下面是官方介绍的编解码功能

T113-i 是一种为多媒体解码平台设计的高级应用处理器。T113-i 集成了64位玄铁C906 RISC-V CPU，
双核 Cortex - A7 CPU 和 HiFi4 DSP，提供高效的计算能力。
 主要特性
支持 H.265、H.264、MPEG-1/2/4、JPEG 等全格式解码。独立的编码器可以用 JPEG 或 MJPEG 来进行编
码。
 T113-i 集成了 H.265/H.264 4K 解码和 SmartColor2.0 后处理，提供完美的视频娱乐体验。

下面我们来测试一下音视频的编码解码功能。

编解码代码

在系统的代码中，下面是程序的位置

----------------
视频
/sdk/platform/framework/auto/cmd_demo/decoderTest 
/sdk/platform/framework/auto/sdk_demo/decoderTest
/sdk/platform/framework/auto/sdk_demo/encoderTest
/sdk/platform/framework/auto/sdk_demo/fltest_streamPlayer

------------------
音频
/sdk/platform/framework/auto/cmd_demo/audplayer
/sdk/platform/framework/auto/qt_demo/fltest_qt_musicplayer
/sdk/platform/framework/auto/sdk_demo/audioencTest
/sdk/platform/framework/auto/sdk_demo/audplayerTest

编译音视频库

系统的音视频库主要是cedarx 和libcedarc；这个在buuildroot中需要选定。如下图

Target Packages
  Allwinner platform private package select
  Libcedcrc
  Cedarx

微信截图_20231220140841.png

微信截图_20231221103631.png

错误

=================
>>> cedarx  Installing to target
cp -rf /home/forlinx/113/OK113i-linux-sdk/out/t113_i/ok113i/longan/buildroot/build/cedarx/config/_cedarx.conf 
/home/forlinx/113/OK113i-linux-sdk/out/t113_i/ok113i/longan/buildroot/target/etc/cedarx.conf
cp: cannot stat '/home/forlinx/113/OK113i-linux-sdk/out/t113_i/ok113i/longan/buildroot/build/cedarx/config/_cedarx.conf': No such file or directory
make[1]: *** [package/pkg-generic.mk:335: /home/forlinx/113/OK113i-linux-sdk/out/t113_i/ok113i/longan/buildroot/build/cedarx/.stamp_target_installed] Error 1

解决办法

cp -rf /home/forlinx/113/OK113i-linux-sdk/out/t113_i/ok113i/longan/buildroot/build/cedarx/conf/default_cedarx.conf  
/home/forlinx/113/OK113i-linux-sdk/out/t113_i/ok113i/longan/buildroot/build/cedarx/config/_cedarx.conf

./build.sh
./build.sh pack

=============================================
视频解码264

fltest_decoderTest 解码/tmp.h264 为yuv 格式。

root@ok113i:/forlinx/media# ls
1.jpg                1280x720_video3.yuv    tmp.h264
1024x600.rgba        2.jpg                  tmp.h265
1280x720_video0.yuv  2560x1440_dcvideo.yuv  videotestsrc_1280x720.nv21
1280x720_video1.yuv  30s.wav
1280x720_video2.yuv  test.mp3

root@ok113i:/forlinx/media# fltest_decoderTest
INFO   : cedarc <log_set_level:43>: Set log level to 3 from /vendor/etc/cedarc.conf
[2023-12-20 17:35:24] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry adecoder-15 fail!
[2023-12-20 17:35:24] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry vdecoder-9 fail!
INFO   : cedarc <CedarPluginVDInit:79>: register h264 decoder success!
INFO   : cedarc <CedarPluginVDInit:84>: register mjpeg decoder success!
[ 1097.603725] VE: VE real_freq=576000000
[ 1097.603725]
INFO   : cedarc <CedarPluginVDInit:86>: register mpeg2 decoder success!
[2023-12-20 17:35:24] WARNING: awplayer <DlOpenPlugin:112>: Invalid plugin,function CedarPluginVDInit not found.
INFO   : cedarc <CedarPluginVDInit:92>: register mpeg4dx decoder success!
INFO   : cedarc <CedarPluginVDInit:79>: register mpeg4H263 decoder success!
INFO   : cedarc <CedarPluginVDInit:90>: register mpeg4Normal decoder success!
INFO   : cedarc <CedarPluginVDInit:74>: register vc1 decoder success!
INFO   : cedarc <CedarPluginVDInit:85>: register h265 decoder success!
[2023-12-20 17:35:24] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry plugin-0 fail!
decoderTest version:V2.0.20220506
decoderTest intputFile:/forlinx/media/tmp.h264
[D]singleDecoderH264Test                 ================================
[D]singleDecoderH264Test                 ====     CedarC  Decoder    ====
[D]singleDecoderH264Test                 ====  singleDecoderTest cbk ====
[D]singleDecoderH264Test                 ================================
[E][decoderTest.cpp]singleDecoderH264Test line:271 open intputFile:/forlinx/media/tmp.h264
[E][decoderTest.cpp]singleDecoderH264Test line:294 open outputFile:/tmp/800x480nv21_sgl.yuv
new AWVideoDecoderImpl() version:V2.0.20220506
sdk_memory version:V2.0.20220506
DEBUG  : ionAlloc <__GetIonMemOpsS:833>: *** get __GetIonMemOpsS ***
INFO   : cedarc <VeInitialize:1307>: *** ic_version = 0x1301000010210,
DEBUG  : cedarc <VeInitialize:1347>: *** nPhyOffset = 0x0
DEBUG  : ionAlloc <ion_alloc_open2:177>: pid: 1559, g_context = 0x28b3b8

DEBUG  : ionAlloc <ion_alloc_open2:204>: ion alloc open ok
DEBUG  : cedarc <CdcIniParserInit:41>: load conf file /etc/cedarc.conf ok!

INFO   : cedarc <log_set_level:43>: Set log level to 5 from /vendor/etc/cedarc.conf
ERROR  : cedarc <DebugCheckConfig:316>: now cedarc log level:5
WARNING: cedarc <InitializeVideoDecoder:619>: warning: the nDeInterlaceHoldingFrameBufferNum is 0
[D]singleDecoderH264Test decode process[0/821226]
======================= ret:-6  
[D]singleDecoderH264Test decode process[815936/821226]
offset>(size-4)
[D]decoderDataReady decode write[384000/192000]
======================= ret:3
output file is saved:/tmp/

=============================================
视频解码h265

demoVdecoder 这个文件失败

==================================

ok113i:/forlinx/media# demoVdecoder -i /forlinx/media/tmp.h265 -o dec265.yuv
INFO   : cedarc <log_set_level:43>: Set log level to 3 from /vendor/etc/cedarc.conf
[2023-12-20 19:28:03] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry adecoder-15 fail!
[2023-12-20 19:28:03] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry vdecoder-9 fail!
INFO   : cedarc <CedarPluginVDInit:79>: register h264 decoder success!
INFO   : cedarc <CedarPluginVDInit:84>: register mjpeg decoder success!
INFO   : cedarc <CedarPluginVDInit:86>: register mpeg2 decoder success!
[2023-12-20 19:28:03] WARNING: awplayer <DlOpenPlugin:112>: Invalid plugin,function CedarPluginVDInit not found.
INFO   : cedarc <CedarPluginVDInit:92>: register mpeg4dx decoder success!
INFO   : cedarc <CedarPluginVDInit:79>: register mpeg4H263 decoder success!
INFO   : cedarc <CedarPluginVDInit:90>: register mpeg4Normal decoder success!
INFO   : cedarc <CedarPluginVDInit:74>: register vc1 decoder success!
INFO   : cedarc <CedarPluginVDInit:85>: register h265 decoder success!
[2023-12-20 19:28:03] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry plugin-0 fail!
[2023-12-20 19:28:03] DEBUG  : awplayer <AwStreamInit:99>: aw stream init...
[2023-12-20 19:28:03] DEBUG  : awplayer <DemoHelpInfo:1074>:  ==== CedarX linux decoder demo help start =====
[2023-12-20 19:28:03] DEBUG  : awplayer <DemoHelpInfo:1075>:  -h or --help to show the demo usage
[2023-12-20 19:28:03] DEBUG  : awplayer <DemoHelpInfo:1076>:  demo created by zouwenhuan, allwinnertech/AL3
[2023-12-20 19:28:03] DEBUG  : awplayer <DemoHelpInfo:1077>:  email: zouwenhuan@allwinnertech.com
[2023-12-20 19:28:03] DEBUG  : awplayer <DemoHelpInfo:1078>:  ===== CedarX linux decoder demo help end ======
[2023-12-20 19:28:03] DEBUG  : awplayer <main:1254>: nDecoderNum = 1
[2023-12-20 19:28:03] DEBUG  : awplayer <ChannelThread:1093>: ChannelThread 11, 0
[2023-12-20 19:28:03] DEBUG  : awplayer <ParseArgument:193>:  get input file: file:///forlinx/media/tmp.h265
[2023-12-20 19:28:03] DEBUG  : awplayer <ParseArgument:210>:  get save pic path: dec265.yuv
DEBUG  : ionAlloc <__GetIonMemOpsS:833>: *** get __GetIonMemOpsS ***
INFO   : cedarc <VeInitialize:1307>: *** ic_version = 0x1301000010210,
DEBUG  : cedarc <VeInitialize:1347>: *** nPhyOffset = 0x0
DEBUG  : ionAlloc <ion_alloc_open2:177>: pid: 1773, g_context = 0xb5d02528

DEBUG  : ionAlloc <ion_alloc_open2:204>: ion alloc open ok
[2023-12-20 19:28:03] DEBUG  : awplayer <CdxParserPrepare:778>: source uri 'file:///forlinx/media/tmp.h265'
[2023-12-20 19:28:03] DEBUG  : awplayer <__FileStreamConnect:407>: (5/0/1133141) path:'file:///forlinx/media/tmp.h265'
[2023-12-20 19:28:03] ERROR  : CdxFlacParser <__FlacParserProbe:1133>: Flac probe failed.
[2023-12-20 19:28:03] WARNING: awplayer <Mp3Probe:854>: Wav parser : no dice, no valid sequence of frames found.
[2023-12-20 19:28:03] WARNING: awplayer <Mp3Probe:854>: Wav parser : no dice, no valid sequence of frames found.frames found.
[2023-12-20 19:28:03] WARNING: awplayer <Mp3Probe:854>: Wav parser : no dice, no valid sequence offrames found.
[2023-12-20 19:28:03] WARNING: awplayer <Mp3Probe:854>: Wav parser : no dice, no valid sequence of frames found.
[2023-12-20 19:28:03] DEBUG  : awplayer <__WvParserProbe:575>: __WvParserProbe:
[2023-12-20 19:28:03] DEBUG  : awplayer <__WvParserProbe:575>: __WvParserProbe:
[2023-12-20 19:28:03] DEBUG  : awplayer <__WvParserProbe:575>: __WvParserProbe:
[2023-12-20 19:28:03] DEBUG  : awplayer <__WvParserProbe:575>: __WvParserProbe:
[2023-12-20 19:28:03] ERROR  : awplayer <__G729ParserProbe:290>: g729 SYNC_WORD probe failed.
[2023-12-20 19:28:03] ERROR  : awplayer <__Id3v2ParserProbe:330>: Probe ID3_header loss sync...
[2023-12-20 19:28:03] WARNING: awplayer <CdxParserCreate:711>: Sorry, I don't know what it is!
[2023-12-20 19:28:03] WARNING: awplayer <CdxParserOpen:756>: should not be here.
[2023-12-20 19:28:03] ERROR  : awplayer <CdxParserPrepare:789>: open parser fail, uri(file:///forlinx/media/tmp.h265)
[2023-12-20 19:28:03] ERROR  : awplayer <initDecoder:278>:  decoder open parser error nRet = -1, Decoder->parser: (nil)
[2023-12-20 19:28:03] ERROR  : awplayer <ChannelThread:1156>:  decoder demom initDecoder error

=============================================

我们修改decoderTest这个程序，使它能解码h265的格式，其中下面代码红色是我修改的。

source ~/113/OK113i-linux-sdk/.buildconfig
~/113/OK113i-linux-sdk/platform/framework/auto/sdk_demo/decoderTest$ make

==============================================

//decoderTest 265
int main(int argc, char** argv)
{
    printf("decoderTest265 version:%s\n", MODULE_VERSION);
    /******** begin set the default encode param ********/
    memset(&decodeParam, 0, sizeof(decodeParam));
    memset(&testParam, 0, sizeof(testParam));

    decodeParam.srcW = 800;
    decodeParam.srcH = 480;
    decodeParam.dstW = 800;
    decodeParam.dstH = 480;
    decodeParam.rotation = Angle_0;
    decodeParam.scaleRatio = ScaleNone;
    decodeParam.codecType = CODEC_H265;
    decodeParam.pixelFormat = PIXEL_NV21;

    testParam.testTimes = 1;
    testParam.testWay = 0;
    strcpy((char*)testParam.intputFile,        "/tmp/tmp.h265");
strcpy((char*)testParam.outputFile,        "/tmp/dec265_out.yuv");

================================================================

Makefile的修改

all: $(Target) 
$(Target) : decoderTest.cpp 
	$(CPP) decoderTest.cpp -o $(Target)  $(LIBS) $(LDFLAGS) -lpthread $(CXXFLAGS)
	$(CPP) decoderTest265.cpp -o $(Target)265  $(LIBS) $(LDFLAGS) -lpthread $(CXXFLAGS)
	@echo "generate $(Target) success!!!"
	@cp -f $(Target)    $(INSTATLL_PATH)
	@cp -f $(Target)265 $(INSTATLL_PATH)
	@echo -e '\e[1;33m cp -f $(Target) $(INSTATLL_PATH) \e[0m'

=============================================
测试解码效果

./decoderTest265
INFO   : cedarc <log_set_level:43>: Set log level to 3 from /vendor/etc/cedarc.conf
[2023-12-21 01:51:19] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry adecoder-15 fail!
[2023-12-21 01:51:19] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry vdecoder-9 fail!
INFO   : cedarc <CedarPluginVDInit:79>: register h264 decoder success!
INFO   : cedarc <CedarPluginVDInit:84>: register mjpeg decoder success!
[ 3213.535493] VE: VE real_freq=576000000
[ 3213.535493]
INFO   : cedarc <CedarPluginVDInit:86>: register mpeg2 decoder success!
[2023-12-21 01:51:19] WARNING: awplayer <DlOpenPlugin:112>: Invalid plugin,function CedarPluginVDInit not found.
INFO   : cedarc <CedarPluginVDInit:92>: register mpeg4dx decoder success!
INFO   : cedarc <CedarPluginVDInit:79>: register mpeg4H263 decoder success!
INFO   : cedarc <CedarPluginVDInit:90>: register mpeg4Normal decoder success!
INFO   : cedarc <CedarPluginVDInit:74>: register vc1 decoder success!
INFO   : cedarc <CedarPluginVDInit:85>: register h265 decoder success!
[2023-12-21 01:51:19] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry plugin-0 fail!
decoderTest265 version:V2.0.20220506
intputFile  :/tmp/tmp.h265
outputFile  :/tmp/d5_out.yuv
[D]singleDecoderTest             ================================
[D]singleDecoderTest             ====     CedarC  Decoder    ====
[D]singleDecoderTest             ====  singleDecoderTest cbk ====
[D]singleDecoderTest             ================================
new AWVideoDecoderImpl() version:V2.0.20220506
sdk_memory version:V2.0.20220506
DEBUG  : ionAlloc <__GetIonMemOpsS:833>: *** get __GetIonMemOpsS ***
INFO   : cedarc <VeInitialize:1307>: *** ic_version = 0x1301000010210,
DEBUG  : cedarc <VeInitialize:1347>: *** nPhyOffset = 0x0
DEBUG  : ionAlloc <ion_alloc_open2:177>: pid: 1597, g_context = 0x198c480

DEBUG  : ionAlloc <ion_alloc_open2:204>: ion alloc open ok
DEBUG  : cedarc <CdcIniParserInit:41>: load conf file /etc/cedarc.conf ok!

INFO   : cedarc <log_set_level:43>: Set log level to 5 from /vendor/etc/cedarc.conf
ERROR  : cedarc <DebugCheckConfig:316>: now cedarc log level:5
WARNING: cedarc <InitializeVideoDecoder:619>: warning: the nDeInterlaceHoldingFrameBufferNum is 0
[D]singleDecoderTest decode process[0/1133141]
[W][decoderTest265.cpp]singleDecoderTest line:514 decode failed,error code:-6
[D]singleDecoderTest decode process[28/1133141]
[W][decoderTest265.cpp]singleDecoderTest line:514 decode failed,error code:-6
[D]singleDecoderTest decode process[86/1133141]

[D]singleDecoderTest decode process[1127265/1133141]
offset>(size-4)
WARNING: cedarc <HevcDecoderAddPtsToList:933>:  h265 pts list is full
[D]decoderDataReady decode write[384000/192000]
[D]printfArgs    -i:/tmp/tmp.h265
[D]printfArgs    -s:[800x480]
[D]printfArgs    -f:278
[D]printfArgs    -p:5
[D]printfArgs    -o:/tmp/d5_out.yuv
output file is saved:/tmp/d5_out.yuv
~ AWVideoDecoderImpl()
Test 1 times.

=============================================
视频编码

root@ok113i:/forlinx/media# encoderTest
encoderTest version:V2.0.2022050[ 5100.284684] VE: VE real_freq=576000000
[ 5100.284684]
6
intputFile /tmp/800_480.yuv
outputFile /tmp/enc720_30p.265
outputFile  CODEC_H265
[D]singleEncoderTest             ================================
[D]singleEncoderTest             ====     CedarC  Encoder    ====
[D]singleEncoderTest             ====    singleDecoderTest    ====
[D]singleEncoderTest             ================================
[D]printfArgs    -s:800x480
[D]printfArgs    -n:1
[D]printfArgs    -f:3
[D]printfArgs    -p:1
[D]printfArgs    -r:30
[D]printfArgs    -d:800x480
sdk_memory version:V2.0.20220506
INFO   : cedarc <VeInitialize:1307>: *** ic_version = 0x1301000010210,
[D]encodeFile malloc pIonMem->vir=0xb6a63000!
new AWVideoEncoderImpl() version:V2.0.20220506
sdk_memory version:V2.0.20220506
INFO   : cedarc <VeInitialize:1307>: *** ic_version = 0x1301000010210,
ERROR  : cedarc <H265EncOpen:6246>: error: the driver do not support the ic 1667
[E][AWVidoeEncoder.cpp]init line:389 VideoEncCreate error, return[E][encoderTest.cpp]encodeFile line:412 init:ffffffff
~ AWVideoEncoderImpl()
ERROR  : cedarc <ReleaseAllocInputBuffer:456>: ReleaseAllocInputBuffer, pEncoder is NULL
[D]printfArgs    -s:800x480
[D]printfArgs    -n:1
[D]printfArgs    -f:3
[D]printfArgs    -p:1
[D]printfArgs    -r:30
[D]printfArgs    -d:800x480
output file is saved:/tmp/enc720_30p.265
Test 1 times.

编码失败，文件为0

=============================================
音频编码

root@ok113i:/forlinx/media# cp 30s.wav /tmp/test.wav
root@ok113i:/forlinx/media# audioenc_test
INFO   : cedarc <log_set_level:43>: Set log level to 3 from /vendor/etc/cedarc.conf
[2023-12-20 18:48:57] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry adecoder-15 fail!
[2023-12-20 18:48:57] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry vdecoder-9 fail!
INFO   : cedarc <CedarPluginVDInit:79>: register h264 decoder success!
INFO   : cedarc <CedarPluginVDInit:84>: register mjpeg decoder success!
INFO   : cedarc <CedarPluginVDInit:86>: register mpeg2 decoder success!
[2023-12-20 18:48:57] WARNING: awplayer <DlOpenPlugin:112>: Invalid plugin,function CedarPluginVDInit not found.
INFO   : cedarc <CedarPluginVDInit:92>: register mpeg4dx decoder success!
INFO   : cedarc <CedarPluginVDInit:79>: register mpeg4H263 decoder success!
INFO   : cedarc <CedarPluginVDInit:90>: register mpeg4Normal decoder success!
INFO   : cedarc <CedarPluginVDInit:74>: register vc1 decoder success!
INFO   : cedarc <CedarPluginVDInit:85>: register h265 decoder success!
[2023-12-20 18:48:57] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry plugin-0 fail!
[2023-12-20 18:48:57] DEBUG  : awplayer <AwStreamInit:99>: aw stream init...
[2023-12-20 18:48:57] DEBUG  : awplayer <AwMuxerInit:53>: aw muxer init ..
[2023-12-20 18:48:57] DEBUG  : awplayer <AwMuxerInit:62>: aw muxer size:4
audioenc test version:V2.0.20220506
12-20 18:48:57.953  AudioEnc(W) : AudioEncInit success
fopen /tmp/test.wav OK
fopen /tmp/test.mp3 ok
12-20 18:48:57.955  AudioEnc(E) : audio encode ERR_AUDIO_ENC_PCMUNDERFLOW
12-20 18:48:58.001  AudioEnc(E) : audio encode ERR_AUDIO_ENC_PCMUNDERFLOW
12-20 18:49:05.031  AudioEnc(E) : audio encode ERR_AUDIO_ENC_PCMUNDERFLOW
12-20 18:49:05.077  AudioEnc(E) : audio encode ERR_AUDIO_ENC_PCMUNDERFLOW
12-20 18:49:05.123  AudioEnc(E) : audio encode ERR_AUDIO_ENC_PCMUNDERFLOW
12-20 18:49:05.169  AudioEnc(E) : audio encode ERR_AUDIO_ENC_PCMUNDERFLOW
file end exit.
audioenc test run finish

=============================================
音频解码

下图是
fltest_qt_musicplayer
微信图片_20231220112009.jpg

root@ok113i:/forlinx/media# fltest_audioplayer   /forlinx/media/test.mp3
[2023-12-20 19:02:26] WARNING: awplayer <log_set_level:30>: Set log level to 3
[2023-12-20 19:02:26] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry adecoder-15 fail!
[2023-12-20 19:02:26] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry vdecoder-9 fail!
INFO   : cedarc <CedarPluginVDInit:79>: register h264 decoder success!
INFO   : cedarc <CedarPluginVDInit:84>: register mjpeg decoder success!
INFO   : cedarc <CedarPluginVDInit:86>: register mpeg2 decoder success!
[2023-12-20 19:02:26] WARNING: awplayer <DlOpenPlugin:112>: Invalid plugin,function CedarPluginVDInit not found.
INFO   : cedarc <CedarPluginVDInit:92>: register mpeg4dx decoder success!
INFO   : cedarc <CedarPluginVDInit:79>: register mpeg4H263 decoder success!
INFO   : cedarc <CedarPluginVDInit:90>: register mpeg4Normal decoder success!
INFO   : cedarc <CedarPluginVDInit:74>: register vc1 decoder success!
INFO   : cedarc <CedarPluginVDInit:85>: register h265 decoder success!
[2023-12-20 19:02:26] ERROR  : awplayer <ReadPluginEntry:194>: read plugin entry plugin-0 fail!
[2023-12-20 19:02:26] DEBUG  : awplayer <AwStreamInit:99>: aw stream init...
[2023-12-20 19:02:26] DEBUG  : awplayer <AwMuxerInit:53>: aw muxer init ..
[2023-12-20 19:02:26] DEBUG  : awplayer <AwMuxerInit:62>: aw muxer size:4
set url:/forlinx/media/test.mp3
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerCreate:216>: XPlayerCreate.
[2023-12-20 19:02:26] DEBUG  : awplayer <LogVersionInfo:34>:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CedarX <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
tag   : cedarx
branch: stable_v2.8_common
commit: 967535b8ff6a073cb4f38e85a4ae5fa6008014d8
date  : Mon, 15 May 2017 01:30:22 +0000 (09:30 +0800)
author:
----------------------------------------------------------------------

xfang tinyalsa SoundDeviceCreate
[2023-12-20 19:02:26] DEBUG  : awplayer <LayerCreate_DE:1540>: libsdk_player version:V2.0.20220516, LayerCreate

(getInstance 93) version:V2.0.20220506
init chwd sucess !
(HwDisplay 279)
(hwd_init 1258)
[2023-12-20 19:02:26] DEBUG  : awplayer <LayerCreate_DE:1593>: screen:w 1024, screen:h 600 disp
sdk_memory version:V2.0.20220506
DEBUG  : ionAlloc <__GetIonMemOpsS:833>: *** get __GetIonMemOpsS ***
INFO   : cedarc <VeInitialize:1307>: *** ic_version = 0x1301000010210,
DEBUG  : cedarc <VeInitialize:1347>: *** nPhyOffset = 0x0
DEBUG  : ionAlloc <ion_alloc_open2:177>: pid: 1608, g_context = 0x274370

DEBUG  : ionAlloc <ion_alloc_open2:204>: ion alloc open ok
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerSetVideoSurfaceTexture:597>: setVideoSurfaceTexture, surface = 0x26fc60
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerThread:1977>: process message XPLAYER_COMMAND_SET_SURFACE.
[2023-12-20 19:02:26] DEBUG  : awplayer <SubtitleCreate:88>: ==== pCallback: 0xb67e3574, pUser: 0x26b280
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerThread:2038>: ==== process message XPLAYER_COMMAND_SET_SUBCTRL.
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerSetDeinterlace:718>: set deinterlace
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerThread:2053>: ==== process message XPLAYER_COMMAND_SET_SUBCTRL.
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerSetDataSourceUrl:462>: setDataSource(url), url='/forlinx/media/test.mp3'
[2023-12-20 19:02:26] INFO   : awplayer <XPlayerThread:1814>: process message XPLAYER_COMMAND_SET_SOURCE.
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerPrepare:767>: prepare
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerThread:2067>: process message XPLAYER_COMMAND_PREPARE. mPriData->mStatus: 1
[2023-12-20 19:02:26] DEBUG  : demuxComponent <DemuxThread:1792>: process message DEMUX_COMMAND_PREPARE.
[2023-12-20 19:02:26] DEBUG  : awplayer <CdxParserPrepare:778>: source uri 'file:///forlinx/media/test.mp3'
[2023-12-20 19:02:26] DEBUG  : awplayer <__FileStreamConnect:407>: (6/0/4818092) path:'file:///forlinx/media/test.mp3'
[2023-12-20 19:02:26] DEBUG  : awplayer <CdxParserCreate:668>: parser node is id3v2.
[2023-12-20 19:02:26] DEBUG  : awplayer <CdxParserCreate:717>: Good, it's 'id3v2'
[2023-12-20 19:02:26] DEBUG  : awplayer <CdxParserCreate:717>: Good, it's 'mp3'
[2023-12-20 19:02:26] WARNING: awplayer <CdxMp3ParserControl:1267>: not implement...(18)
[2023-12-20 19:02:26] DEBUG  : awplayer <PrintMediaInfo:468>: *********PrintMediaInfo begin*********
[2023-12-20 19:02:26] DEBUG  : awplayer <PrintMediaInfo:482>: fileSize = 4818092, bSeekable = 1, duration = 300016, audioNum = 1, videoNum = 0, subtitleNum = 0
[2023-12-20 19:02:26] DEBUG  : awplayer <PrintMediaInfo:520>: ***Audio[0]*** eCodecFormat = 0x3, eSubCodecFormat = 0x0, nChannelNum = 2, nBitsPerSample = 0, nSampleRate = 44100
[2023-12-20 19:02:26] DEBUG  : awplayer <PrintMediaInfo:536>: *********P[ 2124.461204] [SNDCODEC][sunxi_card_hw_params][651]:stream_flag: 0
rintMediaInfo end*********
[2023-12-20 19:02:26] DEBUG  : demuxComponent <PrintMediaInfo:468>: *********PrintMediaInfo begin*********
[2023-12-20 19:02:26] DEBUG  : demuxComponent <PrintMediaInfo:482>: fileSize = 4818092, bSeekable = 1, duration = 300016, audioNum = 1, videoNum = 0, subtitleNum = 0
[2023-12-20 19:02:26] DEBUG  : demuxComponent <PrintMediaInfo:520>: ***Audio[0]*** eCodecFormat = 0x3, eSubCodecFormat = 0x0, nChannelNum = 2, nBitsPerSample = 0, nSampleRate = 44100
[2023-12-20 19:02:26] DEBUG  : demuxComponent <PrintMediaInfo:536>: *********PrintMediaInfo end*********
[2023-12-20 19:02:26] DEBUG  : awplayer <AudioRenderCompSetAudioSink:195>: audio render component setting AudioSink
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerPrepareAsync:747>: prepareAsync
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerThread:2067>: process message XPLAYER_COMMAND_PREPARE. mPriData->mStatus: 4
12-20 19:02:26.531  (W) AUTPlayer info: prepare ok.

[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerStart:797>: start
[2023-12-20 19:02:26] DEBUG  : awplayer <XPlayerThread:2275>: process message XPLAYER_COMMAND_START.
[2023-12-20 19:02:26] DEBUG  : awplayer <[ 2124.569726] [SNDCODEC][sunxi_card_hw_params][651]:stream_flag: 0
PlayerStart:740>: player start
[2023-12-20 19:02:26] DEBUG  : awplayer <BaseCompPostAndWait:61>: audio decoder receive cmd: start
(Allwinner Audio Middle Layer),line(971) : Create Decoder!!=====
[2023-12-20 19:02:26] DEBUG  : awplayer <handleStart:1086>: Create libadecoder success...
(Allwinner Audio Middle Layer),line(603) : AudioDec_Installaudiolib ok
(Allwinner Audio Middle Layer),line(606) : audio decoder init start ...
(AllwinnerAlibs),line(50) :
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Audio <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
tag   : audiocodec-v1.2
branch: new
commit: 3ba65962c01cbf1280ddda19d843009b6ef8ce85
date  : Tue Jan 8 16:25:27 2019 +0800
----------------------------------------------------------------------

(AllwinnerAlibs),line(700) : ----Loading so success!
(AllwinnerAlibs),line(902) : *************pAudioStreamInfo start******************
(AllwinnerAlibs),line(903) : eCodecFormat         :id(3), name(mpeg layer-III)
(AllwinnerAlibs),line(904) : eSubCodecFormat      :0
(AllwinnerAlibs),line(905) : nChannelNum          :2
(AllwinnerAlibs),line(906) : nBitsPerSample       :16
(AllwinnerAlibs),line(907) : nSampleRate          :44100
(AllwinnerAlibs),line(908) : nAvgBitrate          :128000
(AllwinnerAlibs),line(909) : nMaxBitRate          :128000
(AllwinnerAlibs),line(910) : nFileSize            :0
(AllwinnerAlibs),line(911) : eAudioBitstreamSource:0
(AllwinnerAlibs),line(912) : eDataEncodeType      :0
(AllwinnerAlibs),line(913) : nCodecSpecificDataLen:0
(AllwinnerAlibs),line(914) : pCodecSpecificData   :(nil)
(AllwinnerAlibs),line(915) : nFlags               :0
(AllwinnerAlibs),line(916) : nBlockAlign          :0
(AllwinnerAlibs),line(917) : *************pAudioStreamInfo end  ******************
(Allwinner Audio Libs),line(27) : init successs...
(Allwinner Audio Middle Layer),line(614) : AUDIO DECODE INIT OK...0
[2023-12-20 19:02:26] DEBUG  : awplayer <BaseCompPostAndWait:61>: audio render receive cmd: start
[2023-12-20 19:02:26] INFO   : awplayer <handleStart:295>: audio render process start message.
[2023-12-20 19:02:26] DEBUG  : awplayer <initSoundDevice:478>: init sound device.
[2023-12-20 19:02:26] DEBUG  : awplayer <initSoundDevice:486>: set sound devide param, sample rate = 44100, channel num = 2.
[2023-12-20 19:02:26] DEBUG  : demuxComponent <DemuxThread:2053>: process message DEMUX_COMMAND_START.
[2023-12-20 19:02:26] WARNING: awplayer <callbackProcess:3656>: message 0x40a not handled.
======================================
|Space  key | start or pause    |
|Left   key | seek backend      |
|Right  key | seek forward      |
|Up     key | audio volume larger       |
|Down   key | audio volume small        |
======================================
[2023-12-20 19:02:26] DEBUG  : awplayer <startSoundDevice:684>: start sound device.
[2023-12-20 19:02:26] DEBUG  : awplayer <startSoundDevice:686>: audio device start end

[2023-12-20 19:02:26] DEBUG  : awplayer <CallbackProcess:2959>: first audio pts = 0
[2023-12-20 19:02:26] WARNING: awplayer <checkSampleRate:644>: sample rate change from 44100 to 44100.
[2023-12-20 19:02:26] WARNING: awplayer <checkSampleRate:646>: channel num change from 2 to 2.
[2023-12-20 19:02:26] WARNING: awplayer <checkSampleRate:648>: bitPerSample num change from 16 to 16.
[2023-12-20 19:02:26] WARNING: awplayer <checkSampleRate:650>: if need direct out put flag change from 0 to 1.
[2023-12-20 19:02:26] WARNING: awplayer <checkSampleRate:652>: data type change from 1 to 1.
[2023-12-20 19:02:26] WARNING: awplayer <checkSampleRate:671>: start sound devide again because samplaRate or channelNum change
[2023-12-20 19:02:26] INFO   : demuxComponent <DemuxThread:3226>: waiting for audio stream buffer.
[2023-12-20 19:02:26] INFO   : demuxComponent <DemuxThread:3226>: waiting for audio stream buffer.
[2023-12-20 19:02:27] INFO   : demuxComponent <DemuxThread:3226>: waiting for audio stream buffer.
[2023-12-20 19:02:27] INFO   : demuxComponent <DemuxThread:3226>: waiting for audio stream buffer.

=============================================
测试结果

视频 h264的文件能解，h265也可以解了；编码h264不正常。
音频编码解码都可以正常运行。Sdk和测试app都可以运行，但是具体的编码格式没有详细测试。

如有错误，欢迎指正，一起学习

OK113i-S开发板体验-1开箱和基本使用
 OK113i-S开发板-2适配10寸LCD显示
 OK113i-S开发板-3测试实时系统
 OK113i-S开发板-4视频编解码测试

BSPlayer

前言
OK113i-S开发板上测试实时linux系统的效果

Linux下的实时系统有三种方案：这三种方案各有优缺点

1.PREEMPT-RT：PREEMPT-RT是一个基于Linux内核的实时补丁，也被称为Real-Time（RT）补丁。它通过增加内核的可抢占性，使得Linux内核能够实现实时性能。PREEMPT-RT补丁提供了可配置的实时选项，可以根据应用程序的需求进行调整。这个版本跟内核的版本匹配很细致，几乎每一个内核的小版本都有配套的补丁。

2.Xenomai：Xenomai提供了一个实时框架，为Linux操作系统添加了实时性能。它支持具有硬实时和软实时要求的应用程序，并通过分时多任务和抢占式调度来提供可预测性。
这个系统就版本变化比较多，4之前是pipe，5后面是Dovetail，而且与内核版本匹配不太紧密，

3.RTAI（Real-Time Application Interface）：RTAI是一个开源实时应用程序接口，提供了类似API的接口和实时任务调度。它在Linux内核上运行，并通过插入抢占式调度器来实现实时性能。

这里我们测试一下PREEMPT-RT的效果。

编译desktop系统

首先我们编译一个desktop的系统版本，官方提供的镜像是默认的PREEMPT-RT的。
默认配置如下

我们选择Desktop，

选择Desktop，

然后退出保存。

Cp  ~/OK113i-linux-sdk/kernel/linux-5.4/arch/arm/configs/OK113I_linux_defconfig  ok-def
Cp .config  ~/OK113i-linux-sdk/kernel/linux-5.4/arch/arm/configs/OK113I_linux_defconfig
~/OK113i-linux-sdk/build.sh kernel

编译测试程序

为了测试对比效果，我们还需要编译一个测试程序rt-test

进入OK113i-linux-sdk/buildroot/buildroot-201902
make menuconfig ARCH=arm

选择
   Target packages
     Debugging，profileing and benchmark

然后OK113i-linux-sdk/buildroot/buildroot-201902/build.sh

最后 ~/OK113i-linux-sdk/build.sh  pack
Cp  ~/OK113i-linux-sdk/out/t113_i_linux_ok113i_uart0.img  t113-desk.img

测试效果

我们测试两个系统镜像，一个是desktop版本t113-desk.img，
一个是PREEMPT-RT版本，下面是运行的测试结果

我们这里就比较几个简单的命令coremark，和cyclictest
cyclictest -t 5 -p 80 ，5个任务跑80个进程，计算时间

==============
Desktop

root@ok113i:/#uname -a
Linux ok113i 5.4.61 #3 SMP Mon Dec 18 14:42:10 CST 2023 armv7l GNU/Linux

root@ok113i:/# /usr/bin/coremark
2K performance run parameters for coremark.
CoreMark Size    : 666
Total ticks      : 17257
Total time (secs): 17.257000
Iterations/Sec   : 3476.849974
Iterations       : 60000
Compiler version : GCC7.3.1 20180425 [linaro-7.3-2018.05 revision d29120a424ecfbc167ef90065c0eeb7f91977701]
Compiler flags   : -O2   -lrt
Memory location  : Please put data memory location here
                        (e.g. code in flash, data on heap etc)
seedcrc          : 0xe9f5
[0]crclist       : 0xe714
[0]crcmatrix     : 0x1fd7
[0]crcstate      : 0x8e3a
[0]crcfinal      : 0xbd59
Correct operation validated. See readme.txt for run and reporting rules.
CoreMark 1.0 : 3476.849974 / GCC7.3.1 20180425 [linaro-7.3-2018.05 revision d29120a424ecfbc167ef90065c0eeb7f91977701] -O2   -lrt / Heap

root@ok113i:/# cyclictest -t 5 -p 80 
 //5个任务跑80个进程，计算时间
# /dev/cpu_dma_latency set to 0us
policy: fifo: loadavg: 1.09 0.80 0.38 2/70 1575
policy: fifo: loadavg: 1.17 0.82 0.39 1/68 1576
T: 0 ( 1517) P:80 I:1000 C:   9393 Min:     10 Act:   20 Avg:   15 Max:     152
T: 0 ( 1517) P:80 I:1000 C:  11554 Min:     10 Act:   11 Avg:   15 Max:     754
T: 1 ( 1518) P:80 I:1500 C:   7702 Min:     10 Act:   11 Avg:   14 Max:     140
T: 2 ( 1519) P:80 I:2000 C:   5773 Min:     10 Act:   11 Avg:   16 Max:    4850
T: 3 ( 1520) P:80 I:2500 C:   4619 Min:     10 Act:   12 Avg:   17 Max:    5174
T: 4 ( 1521) P:80 I:3000 C:   3850 Min:     10 Act:   11 Avg:   16 Max:    4726
 Disable gpadc0
policy: fifo: loadavg: 1.06 0.85 0.43 1/72 1634

===========
PREEMPT-RT

root@ok113i:/# coremark
2K performance run parameters for coremark.
CoreMark Size    : 666
Total ticks      : 17200
Total time (secs): 17.200000
Iterations/Sec   : 3488.372093
Iterations       : 60000
Compiler version : GCC7.3.1 20180425 [linaro-7.3-2018.05 revision d29120a424ecfbc167ef90065c0eeb7f91977701]
Compiler flags   : -O2   -lrt
Memory location  : Please put data memory location here
                        (e.g. code in flash, data on heap etc)
seedcrc          : 0xe9f5
[0]crclist       : 0xe714
[0]crcmatrix     : 0x1fd7
[0]crcstate      : 0x8e3a
[0]crcfinal      : 0xbd59
Correct operation validated. See readme.txt for run and reporting rules.
CoreMark 1.0 : 3488.372093 / GCC7.3.1 20180425 [linaro-7.3-2018.05 revision d29120a424ecfbc167ef90065c0eeb7f91977701] -O2   -lrt / Heap

root@ok113i:/# cyclictest -t 5 -p 80 
 //5个任务跑80个进程，计算时间
# /dev/cpu_dma_latency set to 0us
policy: fifo: loadavg: 1.00 0.67 0.30 1/79 1651

T: 0 ( 1647) P:80 I:1000 C:  85352 Min:     13 Act:   16 Avg:   16 Max:      57
T: 1 ( 1648) P:80 I:1500 C:  56901 Min:     13 Act:   16 Avg:   15 Max:      74
T: 2 ( 1649) P:80 I:2000 C:  42671 Min:     13 Act:   16 Avg:   15 Max:      39
T: 3 ( 1650) P:80 I:2500 C:  34136 Min:     13 Act:   20 Avg:   16 Max:      51
T: 4 ( 1651) P:80 I:3000 C:  28447 Min:     13 Act:   16 Avg:   16 Max:      80

=========

可以看到 Total time相差不大，但是 cyclictest 的Max时间是大大减少的。可看到Linux-RT内核与普通Linux内核相比，系统延时更加稳定，平均延时、最大延时更低，系统实时性更佳

PREEMPT-RT和xenomai

在buildroot里面，大家可以选择xenomai系统进行选择，对比效果

微信截图_20231219163741.png

这两个的测试结果就不太明显，因为我们的软件没有严格限制，这里就不详细介绍了。感兴趣的可以学习相关内容。

附录
实时系统镜像
Dedktop系统镜像

OK113i-S开发板体验-1开箱和基本使用
 OK113i-S开发板-2适配10寸LCD显示
 OK113i-S开发板-3测试实时系统
 OK113i-S开发板-4视频编解码测试

BSPlayer

前言

本文介绍如何在OK113i-S开发板上适配一个自己的10寸LCD。

OK113i-S 是一个优秀的开发板，支持lvds 单8，双8显示，最大分辨率1280x800

也支持RG666显示，由于我手头只有lvds 单8，40pin的显示器，今天我就适配一下这个LCD的显示。

显示效果

设备接线

我这个转接板是两部分，左边的是触摸线，右边的是屏幕接线，触摸的调试见另一篇文章。这里只说屏幕的适配;从图上可以看到，液晶屏的排线40pin经过转接板转为20pin接入主板。

首先根据主板使用说明，LVDS接口信息，主板是LVDS双8信号，我这里只有LVDS接口的屏幕，其他工程剩余的，是LVDS单8信号，需要做一些修改。屏幕是10寸的40pinLVDS 单8接口。40pinLVDS 接口经过转接板只有20接口线。下面是关键信息。

主板的LCD接口信息
2-主板接口LVDS-双8.png

LCD的LVDS 40PIN接口信息
1-LVDS-40PIN-单8-LCD接口.png

接口板接口信息定义
30-40-pin-接口.png

我们要做的就是把主板的接口与20pin的转接板连接起来，调整排线的线序，具体做法如下

屏幕接口说明书

代码适配修改

首先找到内核的设备树文件OK113i-C-Linux.dts和 OK113i-C-Common.dtsi

Device/config/chips/t113_i/config/ok113i/目录下有同名的链接文件，都指向同一个文件

根据屏幕说明书，找到屏幕的关键参数,如下图

Default 注释的是原来的内容，1024x600是我的屏幕分辨率,这里面有许多参数，具体的说明如下：我们这里只关心几个即可
lcd注释.png

////////////////////////////////////
Lcd_if: HV模式，见lcd屏幕说明
lcd_lvds_if: 0:single link; 1:dual link
lcd_lvds_mode: 0:NS mode; 1:JEIDA mode;这里是JEIDA显示序列

Lcd_x 分辨率x
Lcd_y 分辨率y
Lcd_width 物理尺寸
Lcd_height 物理尺寸

lcd_hbp: hsync back porch(pixel) + hsync plus width(pixel);
lcd_ht: hsync total cycle(pixel)
lcd_vbp: vsync back porch(line) + vysnc plus width(line)
lcd_vt: vysnc total cycle(line)
lcd_hspw: hsync plus width(pixel)
lcd_vspw: vysnc plus width(pixel)
////////////////////////////////////////

UBOOT的配置文件在这里：
kernel/linux-5.4/arch/arm/boot/dts/uboot-board-lvds.dts

这里看到有看到其他的不同屏幕的配置文件，根据我的屏幕类型lvds，uboot-board-lvds.conf;

修改完后，./build.sh 修改编译选项，重新烧录即可

最后我们截屏看看
使用这个命令可以截屏ok113-Screen.bmp

root@ok113i:/# echo 0 >/sys/class/disp/disp/attr/disp
root@ok113i:/# echo /home/forlinx/ok113-Screen.bmp >/sys/class/disp/disp/attr/

问题总结：

1 buidl前需要整体编译一遍，有问题可以群里提问。
2 buidl内核前先clean，减少修改后不生效的问题。
3 修改后不生效，需要查看UBOOT启动的默认选项。

附录
内核配置文件
编译好的LCD支持内核
编译的LCD支持系统镜像

OK113i-S开发板体验-1开箱和基本使用
 OK113i-S开发板-2适配10寸LCD显示
 OK113i-S开发板-3测试实时系统
 OK113i-S开发板-4视频编解码测试

BSPlayer

感谢电子发烧友论坛和飞凌公司所提供的测试机会。
最早是在20年前用过飞凌的产品2440，知道飞凌是一个芯片产品的方案提供商，自己也从事嵌入式相关的工作，所以此次试用可以增加对飞凌产品更多了解。
OK113i-S开发板的功能齐全，制作工艺成熟，是一个不错的工业级开发板。是采用邮票孔核心板加底板方式，性能稳定，价格便宜。
其详细资料可以访问飞凌的网站：

全志T113处理器设计全国产化工业级T113核心板
 全志T113i开发板国产工业级T113开发板

开发板开箱
收到了OK113i-S开发板，周六联系的，下周一就收到了，飞凌就是有效率
板子有电源，天线2个，USB线，还有一个产品小册子，里面介绍了各种产品特点，这个销售还挺有心的。

设备介绍
T113-i 是一种为多媒体解码平台设计的高级应用处理器。T113-i 集成了64位玄铁C906 RISC-V CPU，双核 Cortex - A7 CPU 1.2G和 HiFi4 DSP，这次测试主要是测试32位双核A7CPU的性能。

特色功能
我用过很多开发板，2440，imx6q，3288,3568 等，这个板子给我感觉有特色的功能有这两个，第一是硬件调试线type-c，省去了使用USB-转串口调试线。下图左边是usb转串口调试线，右边是usb下载接口，一根线两用，方便多了。

第二是uboot里面可以按键切换屏幕类型，如下图显示

连续按2可以显示其他的显示类型，按后就保存。这极大的提高了开发效率，方便显示切换。

界面效果展示
在编译系统时测试程序一起用buildroot系统。下面展示了几个基本系统程序。
系统开机启动一个程序 Matrix_Browser，自己开发时，可以针对这个界面进行裁剪。不过这个系统内存只有512M，app的切换就比较慢。推荐不用这个窗口，直接启动自己的界面。

UBOOT界面

主界面

App界面2

web界面

如果你没有lcd屏幕，用浏览器也可以看，但是只能看到第一屏和命令行的程序。这是因为主界面是个B/S结构

系统开机启动的程序和性能

系统开机运行了ftp程序和sshd，方便大家登录和传输文件，matrix-browser是主界面的进程，可以看到系统内存已经用了一半。这对开发性能是足够的。

开发环境
官方提供了一键式开发环境，安装好开发环境ubuntu20的vmware虚拟机，只需开机，build就ok了。相比之前不需要安装太多软件，大大节省了时间，真是太方便了。如果提供云端的开发环境，那就更人性化了。
系统下载大约需要20G的空间，运行大约需要100G磁盘。

Demo程序
开发板自带几个demo的程序，这些程序展示了系统的一些基本功能。
demo代码位置在：platform/framework/auto/qt_demo Qt 测试程序源码目录，具体的内容在《1-OK113i-S_Linux5.4.61+Qt5.12.2_用户编译手册》里面有详细说明，我发现还有一个目录sdk_dem，里面有更多的demo可供开发参考。

串口程序

AudioRecoder 这个录音程序支持多种录音格式。

Sql程序

SPI 接口

其他还有许多实用的功能，这些功能极大的方便了大家开发自己的app，期待大家去发现。
通过多次启动程序发现，这个板子对于取代串口屏之类的单一应用是绰绰有余，无论是性能还是价格都有绝对的优势，期待有更多的进一步开发。

OK113i-S开发板体验-1开箱和基本使用
 OK113i-S开发板-2适配10寸LCD显示
 OK113i-S开发板-3测试实时系统
 OK113i-S开发板-4视频编解码测试

BSPlayer

你使用实时内核就行了
xenomai，5 以后内核用 Dovetail，5以前内核用 cobalt；
这就是启动两个内核，xenomai 有用户空间的lib可以使用。
参考：

https://source.denx.de/Xenomai/xenomai/-/wikis/home

BSPlayerLV 3

@BSPlayer

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