[libcamera-devel] How to activate AGC control in libcamera, or set the GAIN/EXPOSURE parameter by v4l2 command.

[tetsuya.nomura at soho-enterprise.com]

Dear Laurent-san

I don't see the error message.

Here is the message log.
---
pi at raspberrypi:~/libcamera/build/src/qcam $ qcam
qt5ct: using qt5ct plugin
[1:02:58.663793968] [1179]  INFO Camera camera_manager.cpp:287 libcamera v0.0.0+1805-f999ee85
[1:02:58.837343652] [1179]  INFO Camera camera.cpp:797 configuring streams: (0) 800x600-BGR888
[1:02:58.838269394] [1181]  INFO RPI raspberrypi.cpp:116 Mode: 3280x2464 fmt BG10 Score: 2592.49 (best 2592.49)
[1:02:58.838444061] [1181]  INFO RPI raspberrypi.cpp:116 Mode: 1920x1080 fmt BG10 Score: 2066.67 (best 2066.67)
[1:02:58.838541969] [1181]  INFO RPI raspberrypi.cpp:116 Mode: 1640x1232 fmt BG10 Score: 1874.49 (best 1874.49)
[1:02:58.838635765] [1181]  INFO RPI raspberrypi.cpp:116 Mode: 640x480 fmt BG10 Score: 2060 (best 1874.49)
[1:02:58.838741525] [1181]  INFO RPI raspberrypi.cpp:116 Mode: 3280x2464 fmt BA81 Score: 3592.49 (best 1874.49)
[1:02:58.838833525] [1181]  INFO RPI raspberrypi.cpp:116 Mode: 1920x1080 fmt BA81 Score: 3066.67 (best 1874.49)
[1:02:58.838924155] [1181]  INFO RPI raspberrypi.cpp:116 Mode: 1640x1232 fmt BA81 Score: 2874.49 (best 1874.49)
[1:02:58.839013414] [1181]  INFO RPI raspberrypi.cpp:116 Mode: 640x480 fmt BA81 Score: 3060 (best 1874.49)
[1:02:58.839107303] [1181]  INFO RPI raspberrypi.cpp:116 Mode: 3280x2464 fmt pBAA Score: 2092.49 (best 1874.49)
[1:02:58.839198377] [1181]  INFO RPI raspberrypi.cpp:116 Mode: 1920x1080 fmt pBAA Score: 1566.67 (best 1566.67)
[1:02:58.839310914] [1181]  INFO RPI raspberrypi.cpp:116 Mode: 1640x1232 fmt pBAA Score: 1374.49 (best 1374.49)
[1:02:58.839454229] [1181]  INFO RPI raspberrypi.cpp:116 Mode: 640x480 fmt pBAA Score: 1560 (best 1374.49)
[1:02:58.839612156] [1181]  INFO RPI raspberrypi.cpp:496 Sensor: /base/soc/i2c0mux/i2c at 1/imx219 at 10 - Selected mode: 1640x1232-pBAA
[1:02:58.957246497] [1181]  INFO RPI_S_W staggered_ctrl.cpp:36 Init ctrl 0x00980911 with delay 2
[1:02:58.957479609] [1181]  INFO RPI_S_W staggered_ctrl.cpp:36 Init ctrl 0x009e0903 with delay 1
Zero-copy enabled
[1:02:58.993835570] [1181]  INFO RPISTREAM rpi_stream.cpp:120 No buffers available for ISP Output0
[1:02:58.993962033] [1181]  INFO RPISTREAM rpi_stream.cpp:120 No buffers available for ISP Output0
[1:02:59.100047413] [1181]  INFO RPI raspberrypi.cpp:1397 Dropping frame at the request of the IPA (5 left)
[1:02:59.147212816] [1181]  INFO RPI raspberrypi.cpp:1397 Dropping frame at the request of the IPA (4 left)
[1:02:59.164827176] [1181]  INFO RPI raspberrypi.cpp:1397 Dropping frame at the request of the IPA (3 left)
[1:02:59.199072801] [1181]  INFO RPI raspberrypi.cpp:1397 Dropping frame at the request of the IPA (2 left)
libpng warning: iCCP: known incorrect sRGB profile
[1:02:59.229348050] [1181]  INFO RPI raspberrypi.cpp:1397 Dropping frame at the request of the IPA (1 left)
[1:02:59.262649340] [1181]  INFO RPI raspberrypi.cpp:1397 Dropping frame at the request of the IPA (0 left)
seq: 000006 bytesused: 1440000 timestamp: 3779256059000 fps: 0.00
seq: 000007 bytesused: 1440000 timestamp: 3779289386000 fps: 30.01
seq: 000008 bytesused: 1440000 timestamp: 3779322716000 fps: 30.00
seq: 000009 bytesused: 1440000 timestamp: 3779356040000 fps: 30.01
seq: 000010 bytesused: 1440000 timestamp: 3779389368000 fps: 30.00
seq: 000011 bytesused: 1440000 timestamp: 3779422699000 fps: 30.00

---

Best Regards,

NOMURA

-----Original Message-----
From: Laurent Pinchart <laurent.pinchart at ideasonboard.com> 
Sent: Tuesday, September 29, 2020 9:20 AM
To: tetsuya.nomura at soho-enterprise.com
Cc: 'David Plowman' <david.plowman at raspberrypi.com>; 'Kieran Bingham' <kieran.bingham at ideasonboard.com>; libcamera-devel at lists.libcamera.org
Subject: Re: [libcamera-devel] How to activate AGC control in libcamera, or set the GAIN/EXPOSURE parameter by v4l2 command.

Hello Nomura-san,

On Tue, Sep 29, 2020 at 08:55:28AM +0900, tetsuya.nomura at soho-enterprise.com wrote:
> Dear Laurent-san
> 
> Thank you for your advice.
> 
> I've tried the "Save As" button, specify the file name, and saved, but I cannot find it there.

I'm surprised. If you run qcam in a console, does it print an error message when it fails to save ?

> On the other hand, I could store the raw data starting with " qcam -s role=viewfinder -s role=stillraw".

--
Regards,

Laurent Pinchart