Mira130 Linux Driver: Difference between revisions

Mira130 Linux Driver (view source)

Revision as of 18:13, 11 July 2022

4,862 bytes added , 11 July 2022

→‎Using the Driver

Esalazar

208

edits

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 '''Note2:''' To see the frame the bit depth needs to be 9 or 10.
+== Capture with Gstreamer ==
+'''Important:''' Since Y10 is not supported by v4l2src, GRAY16_LE is used for buffer dequeue, this causes GStreamer to take the full 2 bytes instead of just the 10 bits, which results in a darker image due to a 10bit image being interpreted as a 16bit image.
+'''Important:''' To achieve the maximum performance at 120 fps on the Jetson Nano Devkit board, you need to run the following command on the terminal everytime the board is power on:
+<syntaxhighlight lang=bash>
+sudo jetson_clocks
+</syntaxhighlight>
+=== Performance statistics ===
+<pre style="background:#d6e4f1">
+gst-launch-1.0 v4l2src device=/dev/video0 ! "video/x-raw,width=1080,height=1280,framerate=120/1,format=GRAY16_LE" ! queue ! fakesink
+</pre>
+<pre>
+RAM 1233/3963MB (lfb 400x4MB) CPU [0%@1479,0%@1479,0%@1479,50%@1479]
+RAM 1233/3963MB (lfb 400x4MB) CPU [1%@1479,0%@1479,0%@1479,52%@1479]
+RAM 1233/3963MB (lfb 400x4MB) CPU [3%@1479,0%@1479,0%@1479,52%@1479]
+RAM 1233/3963MB (lfb 400x4MB) CPU [8%@1479,1%@1479,0%@1479,51%@1479]
+RAM 1233/3963MB (lfb 400x4MB) CPU [2%@1479,0%@1479,0%@1479,52%@1479]
+RAM 1233/3963MB (lfb 400x4MB) CPU [1%@1479,0%@1479,0%@1479,51%@1479]
+RAM 1233/3963MB (lfb 400x4MB) CPU [1%@1479,1%@1479,0%@1479,51%@1479]
+RAM 1233/3963MB (lfb 400x4MB) CPU [2%@1479,2%@1479,16%@1479,37%@1479]
+RAM 1233/3963MB (lfb 400x4MB) CPU [0%@1479,0%@1479,0%@1479,51%@1479]
+RAM 1233/3963MB (lfb 400x4MB) CPU [0%@1479,0%@1479,45%@1479,7%@1479]
+RAM 1233/3963MB (lfb 400x4MB) CPU [1%@1479,1%@1479,52%@1479,0%@1479]
+</pre>
+=== Framerate ===
+Using the next pipeline we were able to measure the framerate for single capture with perf element:
+<pre style="background:#d6e4f1">
+gst-launch-1.0 v4l2src device=/dev/video0 ! perf ! "video/x-raw,width=1080,height=1280,framerate=120/1,format=GRAY16_LE" ! fakesink
+</pre>
+<pre>
+perf: perf0; timestamp: 0:56:38.972435551; bps: 0,000; mean_bps: 0,000; fps: 0,000; mean_fps: 0,000
+INFO:
+perf: perf0; timestamp: 0:56:39.979731288; bps: 2540175360,000; mean_bps: 0,000; fps: 120,124; mean_fps: 120,124
+INFO:
+perf: perf0; timestamp: 0:56:40.979764633; bps: 2673868800,000; mean_bps: 2673868800,000; fps: 119,996; mean_fps: 120,060
+INFO:
+perf: perf0; timestamp: 0:56:41.979774896; bps: 2673868800,000; mean_bps: 2673868800,000; fps: 119,999; mean_fps: 120,039
+INFO:
+perf: perf0; timestamp: 0:56:42.979792024; bps: 2673868800,000; mean_bps: 2673868800,000; fps: 119,998; mean_fps: 120,029
+INFO:
+perf: perf0; timestamp: 0:56:43.979810601; bps: 2673868800,000; mean_bps: 2673868800,000; fps: 119,998; mean_fps: 120,023
+INFO:
+perf: perf0; timestamp: 0:56:44.979836408; bps: 2673868800,000; mean_bps: 2673868800,000; fps: 119,997; mean_fps: 120,018
+INFO:
+perf: perf0; timestamp: 0:56:45.979851268; bps: 2696151040,000; mean_bps: 2677582506,667; fps: 119,998; mean_fps: 120,016
+INFO:
+perf: perf0; timestamp: 0:56:46.979881952; bps: 2673868800,000; mean_bps: 2677051977,143; fps: 119,996; mean_fps: 120,013
+INFO:
+perf: perf0; timestamp: 0:56:47.979909813; bps: 2673868800,000; mean_bps: 2676654080,000; fps: 119,997; mean_fps: 120,011
+INFO:
+perf: perf0; timestamp: 0:56:48.979927144; bps: 2673868800,000; mean_bps: 2676344604,444; fps: 119,998; mean_fps: 120,010
+INFO:
+perf: perf0; timestamp: 0:56:49.979933060; bps: 2673868800,000; mean_bps: 2676097024,000; fps: 119,999; mean_fps: 120,009
+INFO:
+perf: perf0; timestamp: 0:56:50.979961414; bps: 2673868800,000; mean_bps: 2675894458,182; fps: 119,997; mean_fps: 120,008
+INFO:
+perf: perf0; timestamp: 0:56:51.979984914; bps: 2673868800,000; mean_bps: 2675725653,333; fps: 119,997; mean_fps: 120,007
+INFO:
+perf: perf0; timestamp: 0:56:52.980041219; bps: 2673868800,000; mean_bps: 2675582818,462; fps: 119,993; mean_fps: 120,006
+INFO:
+perf: perf0; timestamp: 0:56:53.988375122; bps: 2696151040,000; mean_bps: 2677051977,143; fps: 120,000; mean_fps: 120,006
+INFO:
+perf: perf0; timestamp: 0:56:54.996700006; bps: 2673868800,000; mean_bps: 2676839765,333; fps: 120,001; mean_fps: 120,005
+INFO:
+perf: perf0; timestamp: 0:56:55.996715395; bps: 2673868800,000; mean_bps: 2676654080,000; fps: 119,998; mean_fps: 120,005
+INFO:
+perf: perf0; timestamp: 0:56:56.996737859; bps: 2673868800,000; mean_bps: 2676490240,000; fps: 119,997; mean_fps: 120,005
+INFO:
+perf: perf0; timestamp: 0:56:57.996773699; bps: 2673868800,000; mean_bps: 2676344604,444; fps: 119,996; mean_fps: 120,004
+INFO:
+perf: perf0; timestamp: 0:56:58.996792290; bps: 2673868800,000; mean_bps: 2676214298,947; fps: 119,998; mean_fps: 120,004
+INFO:
+perf: perf0; timestamp: 0:56:59.996808788; bps: 2673868800,000; mean_bps: 2676097024,000; fps: 119,998; mean_fps: 120,004
+INFO:
+perf: perf0; timestamp: 0:57:00.996826163; bps: 2673868800,000; mean_bps: 2675990918,095; fps: 119,998; mean_fps: 120,003
+INFO:
+perf: perf0; timestamp: 0:57:01.996847486; bps: 2696151040,000; mean_bps: 2676907287,273; fps: 119,997; mean_fps: 120,003
+</pre>
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