blocks|key|555686|text|通过升级LG手机到Android6.0，“修正”了这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|555687|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

"Fixed" the issue by updating LG phone to Android 6.0.

Intro

I'm using <a href="https://developer.android.com/reference/android/hardware/camera2/CaptureRequest.Builder.html" rel="nofollow noreferrer">CaptureRequest.Builder</a> and provide two surfaces as a target: a <a href="https://developer.android.com/reference/android/graphics/SurfaceTexture.html" rel="nofollow noreferrer">SurfaceTexture</a> for drawing GL and an <a href="https://developer.android.com/reference/android/media/ImageReader.html" rel="nofollow noreferrer">ImageReader</a> (<a href="https://developer.android.com/reference/android/media/ImageReader.html#getSurface()" rel="nofollow noreferrer">getSurface()</a>) for processing frame.

I set desired resolution 640x480 by setting <a href="https://developer.android.com/reference/android/graphics/SurfaceTexture.html#setDefaultBufferSize(int,%20int)" rel="nofollow noreferrer">surfaceTexture.setDefaultBufferSize</a> and by creating <a href="https://developer.android.com/reference/android/media/ImageReader.html#newInstance(int,%20int,%20int,%20int)" rel="nofollow noreferrer">ImageReader.newInstance</a>.

The problem

It appears that <a href="https://developer.android.com/reference/android/graphics/SurfaceTexture.html" rel="nofollow noreferrer">SurfaceTexture</a> OpenGL texture is getting image that is of different aspect ration than 640x480 (4:3), more like 2560x1440 (16:9)(<a href="https://developer.android.com/reference/android/graphics/SurfaceTexture.html" rel="nofollow noreferrer">SurfaceTexture</a> occupying full screen, see IMG 3). It has to be noted that both phones have same resolution aspect ratio 16:9. (Texture offset from the sides is left intentionally).

Below you can see IMG 1 displayed on a monitor screen, and IMG 2 and IMG 3 are phone screen captures where current activity view is showing camera preview.

The question

How to correctly force <a href="https://developer.android.com/reference/android/graphics/SurfaceTexture.html" rel="nofollow noreferrer">SurfaceTexture</a> or <a href="https://developer.android.com/reference/android/opengl/GLSurfaceView.Renderer.html" rel="nofollow noreferrer">GLSurfaceView.Renderer</a> to get specific (4:3 in this case) aspect ratio texture image from camera for arbitrary size View?

Relevant

It has to be noted that there is <a href="https://github.com/googlecodelabs/tensorflow-for-poets-2/tree/master/android/tfmobile" rel="nofollow noreferrer">an app</a> that addresses issue, but for that <a href="https://github.com/googlecodelabs/tensorflow-for-poets-2/blob/master/android/tfmobile/src/org/tensorflow/demo/AutoFitTextureView.java" rel="nofollow noreferrer">they change the view size</a> to correspond to desired aspect ratio.

See also:

<ul>
<li><a href="https://github.com/aleksas/androidGlesCamera2" rel="nofollow noreferrer">GitHub repo</a>.</li>
<li><a href="https://github.com/aleksas/androidGlesCamera2/blob/master/app/src/main/java/com/gscoder/androidglescamera2/CameraHandler.java#L169-L185" rel="nofollow noreferrer">Relevant source code</a>.</li>
<li><a href="https://stackoverflow.com/questions/35841619/android-camera2-capture-image-skewed?rq=1">Related post</a></li>
<li><a href="https://stackoverflow.com/questions/19577299/android-camera-preview-stretched?rq=1">Related post</a></li>
</ul>

IMG 1 - Displayed source image:
<a href="https://i.stack.imgur.com/wRyqx.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wRyqx.png" alt="enter image description here"></a>

IMG 2 - Good aspect ratio (<a href="https://en.wikipedia.org/wiki/Nexus_5" rel="nofollow noreferrer">Google Nexus 5</a> - Android 6.0.1):
<a href="https://i.stack.imgur.com/tuvJQ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tuvJQ.png" alt="enter image description here"></a>

IMG 3 - Bad texture aspect ratio (<a href="https://en.wikipedia.org/wiki/LG_G3" rel="nofollow noreferrer">LG-D855</a> - Android 5.0)
<a href="https://i.stack.imgur.com/tHHI1.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tHHI1.jpg" alt="enter image description here"></a>

Android OpenGL camera2 texture resolution

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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Intro我使用并提供两个曲面作为目标:绘制GL的和 (处理框架的)。我通过设置和创建来设置所需的分辨率640x480。问题结果表明， OpenGL纹理得到的图像比640×480 (4:3)不同，更像2560x1440 (16:9)(占据全屏，参见IMG 3)。必须注意的是，这两款手机具有相同的分辨率高宽比16:9。(从侧面偏移的纹理是故意留下的)。下面您可以看到IMG 1显示在监视器屏幕上，IM

Android OpenGL camera2纹理分辨率-腾讯云开发者社区-腾讯云

问Android OpenGL camera2纹理分辨率
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