MPU里面的视频编码分辨率是从设备查询上报来的吗？

besovideo · poston 2019-11-19 09:56

嗯，有不同的流，我们用的是Preview流。可能差异就在这里吧？

janeyre · poston 2019-11-19 10:38

打印出来的log：
getSupportedPreviewSizes strList = [640x480, 640x360, 576x432, 480x360, 480x320, 384x288, 352x288, 320x240, 240x320, 240x160, 176x144, 144x176, 160x120]
adb dump出来的数据如下：
      preview-flip: off
      preview-format: yuv420sp
      preview-format-values: yuv420sp,yuv420p,nv12-venus
      preview-fps-range: 30000,30000
      preview-fps-range-values: (15000,15000),(20000,20000),(24000,24000),(7000,30000),(30000,30000)
      preview-frame-rate: 30
      preview-frame-rate-values: 7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30
      preview-size: 640x480
      preview-size-values: 640x480,640x360,576x432,480x360,480x320,384x288,352x288,320x240,240x320,240x160,176x144,144x176,160x120

janeyre · poston 2019-11-19 10:45

用 Camera.Parameters.getSupportedPreviewSizes()打印出来的数据为：
getSupportedPreviewSizes strList = [640x480, 640x360, 576x432, 480x360, 480x320, 384x288, 352x288, 320x240, 240x320, 240x160, 176x144, 144x176, 160x120]
与adb shell dumpsys media.camera | grep preview 这条指令dump出来的数据是一致的
preview-flip: off
      preview-format: yuv420sp
      preview-format-values: yuv420sp,yuv420p,nv12-venus
      preview-fps-range: 7000,30000
      preview-fps-range-values: (15000,15000),(20000,20000),(24000,24000),(7000,30000),(30000,30000)
      preview-frame-rate: 30
      preview-frame-rate-values: 7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30
      preview-size: 640x480
      preview-size-values: 640x480,640x360,576x432,480x360,480x320,384x288,352x288,320x240,240x320,240x160,176x144,144x176,160x120
      preview-flip: off
      preview-format: yuv420sp
      preview-format-values: yuv420sp,yuv420p,nv12-venus
      preview-fps-range: 30000,30000
      preview-fps-range-values: (15000,15000),(20000,20000),(24000,24000),(7000,30000),(30000,30000)
      preview-frame-rate: 30
      preview-frame-rate-values: 7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30
      preview-size: 640x480
      preview-size-values: 640x480,640x360,576x432,480x360,480x320,384x288,352x288,320x240,240x320,240x160,176x144,144x176,160x120

   这个跟我们要讨论的视频图传分辨率有什么关系呢？

janeyre · poston 2019-11-19 10:49

在运行MPU之后，dump出来的值是：
      C:\Users\jiana>adb shell dumpsys media.camera | grep preview
      preferred-preview-size-for-video: 1920x1080
      preview-format: yuv420sp
      preview-format-values: yuv420p,yuv420sp,
      preview-fps-range: 7000,30000
      preview-fps-range-values: (15000,15000),(20000,20000),(24000,24000),(7000,30000),(30000,30000)
      preview-frame-rate: 30
      preview-frame-rate-values: 15,20,24,30
      preview-size: 1920x1080
      preview-size-values: 1920x1080,1600x1200,1440x1080,1280x960,1280x768,1280x720,1200x1200,1024x768,800x600,864x480,800x480,720x480,640x480,640x360,480x640,480x360,480x320,352x288,320x240,240x320,176x144,160x120,144x176
Active request: preview (paused: no)

   这也不是固件原始的数据。也是被改变了的。跟MPU视频分辨率一致了。

xuwei · poston 2019-11-19 10:50

janeyre post on2019-11-19 10:45
用 Camera.Parameters.getSupportedPreviewSizes()打印出来的数据为：
getSupportedPreviewSizes strList ...

图传的图像就是来自预览流，预览的分辨率来自getSupportedPreviewSizes

janeyre · poston 2019-11-19 11:00

现在的问题是为什么运行MPU的时候，preview-size-values会变成不一样的参数？我的demo运行时的得到的数据是很少的。

xuwei · poston 2019-11-19 11:08

janeyre post on2019-11-19 11:00
现在的问题是为什么运行MPU的时候，preview-size-values会变成不一样的参数？我的demo运行时的得到的数据 ...

我这边写的单独一个demo获取的分辨率如下：
2016-12-31 16:30:22.628 11695-11695/? D/MainActivity: 1920*1080
2016-12-31 16:30:22.628 11695-11695/? D/MainActivity: 1600*1200
2016-12-31 16:30:22.628 11695-11695/? D/MainActivity: 1440*1080
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 1280*960
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 1280*768
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 1280*720
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 1200*1200
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 1024*768
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 800*600
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 864*480
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 800*480
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 720*480
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 640*480
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 640*360
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 480*640
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 480*360
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 480*320
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 352*288
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 320*240
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 240*320
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 176*144
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 160*120
2016-12-31 16:30:22.629 11695-11695/? D/MainActivity: 144*176

xuwei · poston 2019-11-19 11:09

janeyre post on2019-11-19 11:00
现在的问题是为什么运行MPU的时候，preview-size-values会变成不一样的参数？我的demo运行时的得到的数据 ...

代码如下：
if (mCamera == null) {
mCamera = Camera.open();
}
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPreviewFormat(ImageFormat.NV21);
List<Size> sizes = parameters.getSupportedPreviewSizes();
for(Size size:sizes){
Log.d(TAG,size.width+"*"+size.height);
}

xuwei · poston 2019-11-19 11:12

janeyre post on2019-11-19 11:00
现在的问题是为什么运行MPU的时候，preview-size-values会变成不一样的参数？我的demo运行时的得到的数据 ...

按照你测试结果，测试demo只是调用getSupportedPreviewSizes，dump参数不是也发生了变化了么

janeyre · poston 2019-11-19 11:21

我运行demo getSupportedPreviewSizes打印的数据和dump出来的数据是一致的。没有变化呀！
都是——[640x480, 640x360, 576x432, 480x360, 480x320, 384x288, 352x288, 320x240, 240x320, 240x160, 176x144, 144x176, 160x120]

但是运行MPU之后，再去dump就变成了——1920x1080,1600x1200,1440x1080,1280x960,1280x768,1280x720,1200x1200,1024x768,800x600,864x480,800x480,720x480,640x480,640x360,480x640,480x360,480x320,352x288,320x240,240x320,176x144,160x120,144x176
多出来很多分辨率。这是我无法理解的。

		autoLogin	forgetPW
passwd			registerNow