# 解码 JPEG 图像

Source: [https://docs.qualcomm.com/doc/80-70018-50SC/topic/gst-jpg-decode-example.html](https://docs.qualcomm.com/doc/80-70018-50SC/topic/gst-jpg-decode-example.html)

**gst-jpg-decode-example** 应用程序可以解码 JPEG 图像，并在屏幕上查看解码后的图像。

Figure : gst-jpg-decode-example pipeline
            
            ![](data:image/png;base64,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)

## 前提条件

- 如果还没有安装 eSDK，请[下载并安装 eSDK](https://docs.qualcomm.com/bundle/publicresource/topics/80-70018-51/install-sdk.html#download-and-install-esdk-)。
- 要访问您的主机设备，请启用 SSH。有关说明，请参阅[使用 SSH 登录](https://docs.qualcomm.com/bundle/publicresource/topics/80-70018-254/how_to.html#use-ssh)。
Note: 若已启用 SSH，可跳过此步骤。
- 从 Linux 主机推送文件。

        scp <filename> root@<IP address of target device>:/etc/Copy to clipboard
- 使用 HDMI 端口将显示器连接到设备。有关说明，请参见[设置 HDMI 显示器](https://docs.qualcomm.com/bundle/publicresource/topics/80-70018-18/samples.html)。
- 启用显示屏：

        export XDG_RUNTIME_DIR=/dev/socket/weston && export WAYLAND_DISPLAY=wayland-1Copy to clipboard
- 连接扬声器以启用音频。有关说明，请参见[设置音频硬件](https://docs.qualcomm.com/bundle/publicresource/topics/80-70018-16/enable-audio.html)。

如果启用摄像头或显示器时遇到问题，请参阅[摄像头故障排除](https://docs.qualcomm.com/bundle/publicresource/topics/80-70018-17/troubleshooting.html)和[显示器故障排除](https://docs.qualcomm.com/bundle/publicresource/topics/80-70018-18/debug.html)。

## 运行应用程序

运行用例。为应用程序指定参数，如宽度和高度等。

    gst-jpg-decode-example -w 1920 -h 1080 -i /opt/filename_%d.jpgCopy to clipboard

要显示可用的帮助选项，请在 SSH shell 中运行以下命令：

    gst-camera-switch-example --helpCopy to clipboard

要停止用例，请按 CTRL + C。

## 预期输出

解码后的图像显示在屏幕上以供预览。

## Pipeline 流

下表列出了用于运行解码 JPEG 图像 pipeline 的插件：| 插件 | 说明 |
| --- | --- |
| multifilesrc | 从按顺序命名的文件中读取视频数据。 |
| capsfilter | 对视频数据强制实施约束。 |
| jpegdec | 解码 JPEG 视频流。 |
| videoconvert | 将视频帧从一种格式转换为另一种格式。 |
| [Waylandsink](https://docs.qualcomm.com/doc/80-70018-50SC/topic/waylandsink.html) | 在 Wayland 显示器上显示视频流。 |

**Parent Topic:** [运行摄像头示例应用程序](https://docs.qualcomm.com/doc/80-70018-50SC/topic/camera-sample-applications.html)

Last Published: Nov 12, 2025

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