查看“Debian Desktop 系统使用”的源代码

==基础信息==
*用户密码
<syntaxhighlight lang="bash">
user: linaro
passwd: linaro
</syntaxhighlight>
==使用示例==
===视频硬件编解码===
*使用Qt的multimedia播放视频
<syntaxhighlight lang="bash">
$ sudo test_dec-qt.sh arm64
</syntaxhighlight>
[[文件:Screenshot_from_2020-07-22_14-42-03.png|frameless|650px]]<br />
<br />
*使用gstreamer播放视频
<syntaxhighlight lang="bash">
$ sudo test_dec-gst.sh
</syntaxhighlight>
[[文件:Screenshot_from_2020-07-22_14-45-33.png|frameless|650px]]<br />
<br />
*播放4K视频
<syntaxhighlight lang="bash">
$ gst-launch-1.0 playbin uri=file:///home/linaro/4k.mp4
</syntaxhighlight>
[[文件:Screenshot_from_2020-07-22_14-51-55.png|frameless|650px]]<br />
<br />
*列出一些gstreamer命令
<syntaxhighlight lang="bash">
$ gst-launch-1.0 playbin uri=file:///usr/local/test.mp4
$ gst-launch-1.0 uridecodebin uri=file:///usr/local/test.mp4 ! xvimagesink
$ gst-launch-1.0 uridecodebin uri=file:///usr/local/test.mp4 ! rkximagesink
$ gst-launch-1.0 filesrc location=/usr/local/test.mp4 ! queue ! qtdemux  name=dmux dmux.video_0 ! queue ! h264parse ! mppvideodec ! rkximagesink dmux.audio_0 ! queue ! aacparse ! faad ! autoaudiosink
$ gst-inspect-1.0 rkximagesink
  # 查看插件信息
$ gst-discoverer-1.0 /usr/local/test.mp4
  # 查看视频信息
</syntaxhighlight>
*mpv播放器
系统自带mpv播放器，集成mpp支持硬解码
<syntaxhighlight lang="bash">
$ mpv /home/linaro/4k.mp4
  # 使用mpv播放器播放4k视频
$ mpv /dev/video0
  # 预览摄像头
$ mpv rtsp://admin:adm12345@10.168.1.227/cam/realmonitor?channel=1&subtype=0
  # 播放rtsp流
</syntaxhighlight>
<br />
*FFmpeg
FFmpeg支持硬件解码
<syntaxhighlight lang="bash">
$ ffmpeg -decoders | grep -i mpp
...
 V..... h264_rkmpp           h264 (rkmpp) (codec h264)
 V..... hevc_rkmpp           hevc (rkmpp) (codec hevc)
 V..... vp8_rkmpp            vp8 (rkmpp) (codec vp8)
 V..... vp9_rkmpp            vp9 (rkmpp) (codec vp9)
  # 查看ffmpeg支持的硬件解码器
</syntaxhighlight>
===OpenGL-ES===
*执行测试脚本
<syntaxhighlight lang="bash">
$ sudo test_glmark2_normal.sh
</syntaxhighlight>
[[文件:Screenshot_from_2020-07-22_09-07-38.png|frameless|650px]]<br />
<br />
[[文件:Screenshot_from_2020-07-22_09-12-58.png|frameless|650px]]<br />
<br />
===WebGL===
*打开chromium浏览器，在地址栏输入 <code>chrome://gpu</code> 查看硬件加速相关信息
[[文件:Screenshot_from_2020-07-22_10-31-26.png|frameless|650px]]<br />
<br />
*打开chromium浏览器，在地址栏输入 <code>https://get.webgl.org/</code> 测试WebGL
[[文件:Screenshot_from_2022-02-21_13-47-27.png|frameless|650px]]<br />
<br />

===OpenCL===
*安装并运行<code>clinfo</code>，查看OpenCL相关信息
<syntaxhighlight lang="bash">
$ sudo apt-get install -f -y clinfo
$ clinfo
Number of platforms                               1
  Platform Name                                   ARM Platform
  Platform Vendor                                 ARM
  Platform Version                                OpenCL 1.2 v1.r14p0-01rel0-git(a79caef).8ddfd7584149d9238dced4e406610de7
  Platform Profile                                FULL_PROFILE
  Platform Extensions                             cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_byte_addy
  Platform Extensions function suffix             ARM

  Platform Name                                   ARM Platform
Number of devices                                 1
  Device Name                                     Mali-T860
  Device Vendor                                   ARM
  Device Vendor ID                                0x8602000
  Device Version                                  OpenCL 1.2 v1.r14p0-01rel0-git(a79caef).8ddfd7584149d9238dced4e406610de7
  Driver Version                                  1.2
  Device OpenCL C Version                         OpenCL C 1.2 v1.r14p0-01rel0-git(a79caef).8ddfd7584149d9238dced4e406610de7
  Device Type                                     GPU
  Device Profile                                  FULL_PROFILE
  Max compute units                               4
  Max clock frequency                             800MHz
  Device Partition                                (core)
    Max number of sub-devices                     0
    Supported partition types                     None
  Max work item dimensions                        3
  Max work item sizes                             256x256x256
  Max work group size                             256
...
</syntaxhighlight>

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==开发环境==

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