Re: Framerate is consistently divided by 2.5
Hi Laurent, Even with nodrop=1 the framerate is still stuck at ~12fps when it should be ~30fps. I ran /yavta -c -f Y800 -s 1280x960 /dev/video0 to test the camera fps. Here is the YAVTA output for nodrop=0: http://pastebin.com/bQZcJ0Fd Here is the YAVTA output for nodrop=1: http://pastebin.com/cFYFUrvN I used the following command to change the nodrop parameter (UVC is a built-in kernel module): echo 1 /sys/module/uvcvideo/parameters/nodrop I also tried enabling log for the uvcvideo module: echo 0x /sys/module/uvcvideo/parameters/trace And here is the corresponding part of dmesg: http://pastebin.com/eWL3GbE1 There seems to be some errors in this log (e.g. Stream 1 error event b5 e5 len 12.), but I'm not sure they could be the cause of issue or not. Thanks, Isaac On Tue, Sep 16, 2014 at 4:08 PM, Laurent Pinchart laurent.pinch...@ideasonboard.com wrote: Hi Isaac, On Sunday 14 September 2014 01:57:02 Isaac Nickaein wrote: Ah sorry for the confusion. The USB camera was not working on the old kernel of ARM board. After patching the kernel, I can grab images but the framerate is 1/2.5 of expected framerate. The camera works without any issue on my PC (with kernel 3.13) though. The uvcvideo driver drops erroneous frame by default. Could you please try turning that off by setting the nodrop module parameter to 1 and check if the frame rate changes ? Please use the yavta command line test application (http://git.ideasonboard.org/yavta.git) as other applications might not correctly handle frames with the error bit set, or might not take them into account to compute the frame rate. The following command line should be all you need (you might want to change the resolution and video device to match your system). yavta -c -f YUYV -s 640x480 /dev/video0 -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Framerate is consistently divided by 2.5
Ah sorry for the confusion. The USB camera was not working on the old kernel of ARM board. After patching the kernel, I can grab images but the framerate is 1/2.5 of expected framerate. The camera works without any issue on my PC (with kernel 3.13) though. On Wed, Sep 10, 2014 at 6:11 PM, Laurent Pinchart laurent.pinch...@ideasonboard.com wrote: Hi Isaac, On Saturday 06 September 2014 12:35:25 Isaac Nickaein wrote: Hi, After patching the kernel, the rate that images are captured from the camera reduce by a factor of 2.5. How have you patched the kernel ? If you have both a working and non-working version you could use git-bisect to find the commit that causes this breakage. Here are a list of frame rates I have tried followed by the resulted frame- rate: 10 fps -- 4 fps 15 fps -- 6 fps 25 fps -- 10 fps 30 fps -- 12 fps Note that all of the rates are consistently divided by 2.5. This seems to be a clocking issue to me. Is there any multipliers in V4L2 (or UVC?) code in framerate calculation which depends on the hardware and be cause of this? -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Framerate is consistently divided by 2.5
Hi, After patching the kernel, the rate that images are captured from the camera reduce by a factor of 2.5. Here are a list of frame rates I have tried followed by the resulted frame-rate: 10 fps -- 4 fps 15 fps -- 6 fps 25 fps -- 10 fps 30 fps -- 12 fps Note that all of the rates are consistently divided by 2.5. This seems to be a clocking issue to me. Is there any multipliers in V4L2 (or UVC?) code in framerate calculation which depends on the hardware and be cause of this? Bests, Isaac -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Actual framerate is always divided by 2.5
Hi, I am working on a ARM board and have patched its kernel to support V4L2 with help of Mr. Hans Verkuil (here is the discussion: http://comments.gmane.org/gmane.linux.drivers.video-input-infrastructure/80350). The problem I have now is the actual frame rate is divided by a factor of 2.5. For instance, when I set the framerate to be @25fps, I can capture images at exact 10fps. Here is more results showing the framerate reported by v4l2-ctl -P command vs. the measured framerate inside my C++ code (I capture each image and throw them away to eliminate irrelevant times in measuring fps): Reported by v4l2-ctl: 10 fps - Actual: 4 fps Reported by v4l2-ctl: 15 fps - Actual: 6 fps Reported by v4l2-ctl: 25 fps - Actual: 10 fps Reported by v4l2-ctl: 30 fps - Actual: 12 fps This seems to be a clocking issue. Is there any constant multiplier in V4L2 (or UVC?) code which depends on the hardware and be cause of this problem? Thanks, Isaac -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
error: redefinition of 'altera_init' during build on Kernel 3.0.36+
Hello, I get the following error when I try to build the V4L2 on Kernel 3.0.36+ for ARM architecture: /root/v4l2/media_build/v4l/altera.c:2417:5: error: redefinition of 'altera_init' int altera_init(struct altera_config *config, const struct firmware *fw) ^ In file included from /root/v4l2/media_build/v4l/altera.c:32:0: /root/v4l2/media_build/v4l/../linux/include/misc/altera.h:41:19: note: previous definition of 'altera_init' was here static inline int altera_init(struct altera_config *config, ^ I checked the altera.h code and apparently, the IS_ENABLED macro is not defined and causes this problem. I have prepared kernel source at /lib/modules/3.0.36+/build/ and it builds successfully. Can anyone help me on this issue? Bests, Isaac -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: error: redefinition of 'altera_init' during build on Kernel 3.0.36+
/linux/kernel.h:659:49: note: in definition of macro 'container_of' const typeof( ((type *)0)-member ) *__mptr = (ptr); \ ^ include/linux/list.h:419:13: note: in expansion of macro 'list_entry' for (pos = list_entry((head)-next, typeof(*pos), member); \ ^ /root/v4l2/media_build/v4l/../linux/include/media/v4l2-device.h:140:3: note: in expansion of macro 'list_for_each_entry' list_for_each_entry((sd), (v4l2_dev)-subdevs, list) \ ^ /root/v4l2/media_build/v4l/../linux/include/media/v4l2-device.h:184:3: note: in expansion of macro '__v4l2_device_call_subdevs_p' __v4l2_device_call_subdevs_p(v4l2_dev, __sd, \ ^ /root/v4l2/media_build/v4l/au0828-video.c:1120:2: note: in expansion of macro 'v4l2_device_call_all' v4l2_device_call_all(dev-v4l2_dev, 0, video, s_std, dev-std); ^ In file included from include/linux/module.h:9:0, from /root/v4l2/media_build/v4l/au0828-video.c:31: /root/v4l2/media_build/v4l/au0828-video.c:1120:27: error: 'struct au0828_dev' has no member named 'v4l2_dev' v4l2_device_call_all(dev-v4l2_dev, 0, video, s_std, dev-std); ^ include/linux/list.h:420:24: note: in definition of macro 'list_for_each_entry' pos-member != (head); \ ^ /root/v4l2/media_build/v4l/../linux/include/media/v4l2-device.h:184:3: note: in expansion of macro '__v4l2_device_call_subdevs_p' __v4l2_device_call_subdevs_p(v4l2_dev, __sd, \ ^ /root/v4l2/media_build/v4l/au0828-video.c:1120:2: note: in expansion of macro 'v4l2_device_call_all' v4l2_device_call_all(dev-v4l2_dev, 0, video, s_std, dev-std); ^ In file included from include/linux/cache.h:4:0, from include/linux/time.h:7, from include/linux/stat.h:60, from include/linux/module.h:10, from /root/v4l2/media_build/v4l/au0828-video.c:31: /root/v4l2/media_build/v4l/au0828-video.c:1121:27: error: 'struct au0828_dev' has no member named 'v4l2_dev' v4l2_device_call_all(dev-v4l2_dev, 0, tuner, s_frequency, f); ^ include/linux/kernel.h:659:49: note: in definition of macro 'container_of' const typeof( ((type *)0)-member ) *__mptr = (ptr); \ ^ include/linux/list.h:419:13: note: in expansion of macro 'list_entry' for (pos = list_entry((head)-next, typeof(*pos), member); \ ^ /root/v4l2/media_build/v4l/../linux/include/media/v4l2-device.h:140:3: note: in expansion of macro 'list_for_each_entry' list_for_each_entry((sd), (v4l2_dev)-subdevs, list) \ ^ /root/v4l2/media_build/v4l/../linux/include/media/v4l2-device.h:184:3: note: in expansion of macro '__v4l2_device_call_subdevs_p' __v4l2_device_call_subdevs_p(v4l2_dev, __sd, \ ^ /root/v4l2/media_build/v4l/au0828-video.c:1121:2: note: in expansion of macro 'v4l2_device_call_all' v4l2_device_call_all(dev-v4l2_dev, 0, tuner, s_frequency, f); ^ In file included from include/linux/module.h:9:0, from /root/v4l2/media_build/v4l/au0828-video.c:31: /root/v4l2/media_build/v4l/au0828-video.c:1121:27: error: 'struct au0828_dev' has no member named 'v4l2_dev' v4l2_device_call_all(dev-v4l2_dev, 0, tuner, s_frequency, f); ^ include/linux/list.h:420:24: note: in definition of macro 'list_for_each_entry' pos-member != (head); \ ^ /root/v4l2/media_build/v4l/../linux/include/media/v4l2-device.h:184:3: note: in expansion of macro '__v4l2_device_call_subdevs_p' __v4l2_device_call_subdevs_p(v4l2_dev, __sd, \ ^ /root/v4l2/media_build/v4l/au0828-video.c:1121:2: note: in expansion of macro 'v4l2_device_call_all' v4l2_device_call_all(dev-v4l2_dev, 0, tuner, s_frequency, f); ^ /root/v4l2/media_build/v4l/au0828-video.c: In function 'au0828_v4l2_poll': /root/v4l2/media_build/v4l/au0828-video.c:1171:2: error: implicit declaration of function 'poll_requested_events' [-Werror=implicit-function-declaration] unsigned long req_events = poll_requested_events(wait); ^ On Sun, Jul 27, 2014 at 12:23 PM, Hans Verkuil hverk...@xs4all.nl wrote: On 07/27/2014 08:47 AM, Isaac Nickaein wrote: Hello, I get the following error when I try to build the V4L2 on Kernel 3.0.36+ for ARM architecture: /root/v4l2/media_build/v4l/altera.c:2417:5: error: redefinition of 'altera_init' int altera_init(struct altera_config *config, const struct firmware *fw) ^ In file included from /root/v4l2/media_build/v4l/altera.c:32:0: /root/v4l2/media_build/v4l/../linux/include/misc/altera.h:41:19: note: previous definition of 'altera_init' was here static inline int altera_init(struct altera_config *config, ^ I checked the altera.h code and apparently, the IS_ENABLED macro is not defined and causes this problem. I have prepared kernel source at /lib/modules/3.0.36+/build/ and it builds successfully. Can anyone help me on this issue
Re: error: redefinition of 'altera_init' during build on Kernel 3.0.36+
' const typeof( ((type *)0)-member ) *__mptr = (ptr); \ ^ include/linux/list.h:419:13: note: in expansion of macro 'list_entry' for (pos = list_entry((head)-next, typeof(*pos), member); \ ^ /root/v4l2/media_build/v4l/../linux/include/media/v4l2-device.h:140:3: note: in expansion of macro 'list_for_each_entry' list_for_each_entry((sd), (v4l2_dev)-subdevs, list) \ ^ /root/v4l2/media_build/v4l/../linux/include/media/v4l2-device.h:184:3: note: in expansion of macro '__v4l2_device_call_subdevs_p' __v4l2_device_call_subdevs_p(v4l2_dev, __sd, \ ^ /root/v4l2/media_build/v4l/au0828-video.c:1120:2: note: in expansion of macro 'v4l2_device_call_all' v4l2_device_call_all(dev-v4l2_dev, 0, video, s_std, dev-std); ^ In file included from include/linux/module.h:9:0, from /root/v4l2/media_build/v4l/au0828-video.c:31: /root/v4l2/media_build/v4l/au0828-video.c:1120:27: error: 'struct au0828_dev' has no member named 'v4l2_dev' v4l2_device_call_all(dev-v4l2_dev, 0, video, s_std, dev-std); ^ include/linux/list.h:420:24: note: in definition of macro 'list_for_each_entry' pos-member != (head); \ ^ /root/v4l2/media_build/v4l/../linux/include/media/v4l2-device.h:184:3: note: in expansion of macro '__v4l2_device_call_subdevs_p' __v4l2_device_call_subdevs_p(v4l2_dev, __sd, \ ^ /root/v4l2/media_build/v4l/au0828-video.c:1120:2: note: in expansion of macro 'v4l2_device_call_all' v4l2_device_call_all(dev-v4l2_dev, 0, video, s_std, dev-std); ^ In file included from include/linux/cache.h:4:0, from include/linux/time.h:7, from include/linux/stat.h:60, from include/linux/module.h:10, from /root/v4l2/media_build/v4l/au0828-video.c:31: /root/v4l2/media_build/v4l/au0828-video.c:1121:27: error: 'struct au0828_dev' has no member named 'v4l2_dev' v4l2_device_call_all(dev-v4l2_dev, 0, tuner, s_frequency, f); ^ include/linux/kernel.h:659:49: note: in definition of macro 'container_of' const typeof( ((type *)0)-member ) *__mptr = (ptr); \ ^ include/linux/list.h:419:13: note: in expansion of macro 'list_entry' for (pos = list_entry((head)-next, typeof(*pos), member); \ ^ /root/v4l2/media_build/v4l/../linux/include/media/v4l2-device.h:140:3: note: in expansion of macro 'list_for_each_entry' list_for_each_entry((sd), (v4l2_dev)-subdevs, list) \ ^ /root/v4l2/media_build/v4l/../linux/include/media/v4l2-device.h:184:3: note: in expansion of macro '__v4l2_device_call_subdevs_p' __v4l2_device_call_subdevs_p(v4l2_dev, __sd, \ ^ /root/v4l2/media_build/v4l/au0828-video.c:1121:2: note: in expansion of macro 'v4l2_device_call_all' v4l2_device_call_all(dev-v4l2_dev, 0, tuner, s_frequency, f); ^ In file included from include/linux/module.h:9:0, from /root/v4l2/media_build/v4l/au0828-video.c:31: /root/v4l2/media_build/v4l/au0828-video.c:1121:27: error: 'struct au0828_dev' has no member named 'v4l2_dev' v4l2_device_call_all(dev-v4l2_dev, 0, tuner, s_frequency, f); ^ include/linux/list.h:420:24: note: in definition of macro 'list_for_each_entry' pos-member != (head); \ ^ /root/v4l2/media_build/v4l/../linux/include/media/v4l2-device.h:184:3: note: in expansion of macro '__v4l2_device_call_subdevs_p' __v4l2_device_call_subdevs_p(v4l2_dev, __sd, \ ^ /root/v4l2/media_build/v4l/au0828-video.c:1121:2: note: in expansion of macro 'v4l2_device_call_all' v4l2_device_call_all(dev-v4l2_dev, 0, tuner, s_frequency, f); ^ /root/v4l2/media_build/v4l/au0828-video.c: In function 'au0828_v4l2_poll': /root/v4l2/media_build/v4l/au0828-video.c:1171:2: error: implicit declaration of function 'poll_requested_events' [-Werror=implicit-function-declaration] unsigned long req_events = poll_requested_events(wait); ^ On Sun, Jul 27, 2014 at 12:23 PM, Hans Verkuil hverk...@xs4all.nl wrote: On 07/27/2014 08:47 AM, Isaac Nickaein wrote: Hello, I get the following error when I try to build the V4L2 on Kernel 3.0.36+ for ARM architecture: /root/v4l2/media_build/v4l/altera.c:2417:5: error: redefinition of 'altera_init' int altera_init(struct altera_config *config, const struct firmware *fw) ^ In file included from /root/v4l2/media_build/v4l/altera.c:32:0: /root/v4l2/media_build/v4l/../linux/include/misc/altera.h:41:19: note: previous definition of 'altera_init' was here static inline int altera_init(struct altera_config *config, ^ I checked the altera.h code and apparently, the IS_ENABLED macro is not defined and causes this problem. I have prepared kernel source at /lib/modules/3.0.36+/build/ and it builds successfully. Can anyone
Re: error: redefinition of 'altera_init' during build on Kernel 3.0.36+
Hi Hans, I understand. I will get in touch with the maintainer to see how we can fix this issue. Thank you so much for the help, Isaac On Sun, Jul 27, 2014 at 1:30 PM, Hans Verkuil hverk...@xs4all.nl wrote: On 07/27/2014 10:42 AM, Isaac Nickaein wrote: On Sun, Jul 27, 2014 at 12:56 PM, Hans Verkuil hverk...@xs4all.nl wrote: No. Whoever maintains that repository applied v4l code from some newer kernel without apparently ever testing it. This is really the responsibility of maintainer of that repository and is out of our control. You need to address your questions to that repository maintainer, we can't help, I'm afraid. Ah I see. I have some issues with v4l2 on this kernel version and I am trying to upgrade v4l2 to fix that. One last question: Can I remove current v4l codes in kernel, replace them with the V4L2 backport (provided by linuxtv), fix the compatibility issues (hopefully) to get a kernel source with newer v4l2 code? I am not sure if the v4l2 backport is the same type of code that is present in kernel source at drivers/media/video, drivers/media/dvb, etc. Yes, you can, but it isn't easy. In this repo: http://git.linuxtv.org/cgit.cgi/hverkuil/cisco_build.git/tree/?h=cobalt-mainline there is a patch-kernel.sh script that can patch a vendor kernel with the v4l code from a fairly recent stable kernel (I think it is good for 3.14, I don't know if it can backport from a 3.15 kernel). You need to set the target, orig_source and source paths correctly and then run it. You end up with a huge patch that you can apply to your kernel. It's probably still not enough since you may have to add compat code from v4l/compat.h to the drivers you want to compile in. It depends on what drivers you want to compile how much work that is. I'm not going to give support for this, so you're on your own. The repo owner really should fix his tree. Regards, Hans -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
