harmony 鸿蒙Previewing

2022-08-09
浏览 (686)

Previewing

When to Use

Use the camera module APIs to generate and play video streams.

Available APIs

For details, see the available APIs described in development guidelines on photographing.

Limitations and Constraints

None

How to Develop

Perform step 1 through step 4 described in development guidelines on photographing.

Set the preview area.

Surface *surface = Surface::CreateSurface();
/* Set the display area. */
surface->SetUserData("region_position_x", "480"); // X-coordinate of the upper left corner of the rectangle
surface->SetUserData("region_position_y", "270"); // Y-coordinate of the upper left corner of the rectangle
surface->SetUserData("region_width", "960"); // Width
surface->SetUserData("region_height", "540"); // Height


fc->AddSurface(*surface);

Start and stop previewing.

stateCallback->camera_->TriggerLoopingCapture(*fc); // Start previewing.
stateCallback->camera_->StopLoopingCapture(); // Stop previewing.

你可能感兴趣的鸿蒙文章

harmony 鸿蒙Development Examples

harmony 鸿蒙Photographing

harmony 鸿蒙Video Recording

harmony 鸿蒙Use Case

harmony 鸿蒙Screen and Camera Control Overview

harmony 鸿蒙Adding Pages

harmony 鸿蒙Debugging and Packaging

harmony 鸿蒙Building the Details Page

harmony 鸿蒙FAQs

harmony 鸿蒙Building the Home Page

0 赞

所属分类： 后端技术
本文标签：
版权声明： 原创文章如转载，请注明本文链接: https://m.seaxiang.com/blog/e4cabf23803b41d79df662e7b82dfc82