NetBSD-Users archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: Logitech HD Pro Webcam C920 USB webcam resolution
El 25/2/25 a las 20:24, Joel escribió:
On 2/25/2025 11:06, Ramiro Aceves wrote:
Hello,
I am having trouble to get proper pictures and videos from it.
with:
$ffmpeg7 -f v4l2 -i /dev/video0 -vframes 1 output.jpg
I get a very dark picture.
with:
ffmpeg7 -f v4l2 -i /dev/video0 -vframes 5 output_%02d.jpg
Not sure if this helps, but I've had issues using OpenCV as well. It
seems there's an issue with an ioctl call when changing camera settings.
In my case, I can't use OpenCV to change the resolution from the default.
I ended up making a couple changes for my camera as a workaround to at
least get full resolution.
Also, I have to "warm" the camera auto brightness before taking a final
image.
Here's my OpenCV git diff:
diff --git a/CMakeLists.txt b/CMakeLists.txt
index fa409f516c..c05da68e82 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,6 +6,10 @@
#
#
----------------------------------------------------------------------------
+# BSD
+add_compile_options($<$<COMPILE_LANGUAGE:C>:-std=gnu17>)
+add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-std=gnu++20>)
+
# Disable in-source builds to prevent source tree corruption.
if(" ${CMAKE_SOURCE_DIR}" STREQUAL " ${CMAKE_BINARY_DIR}")
message(FATAL_ERROR "
@@ -129,7 +133,7 @@ if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT) #
https://cmake.org/cmake/help/
if(WIN32)
set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/install" CACHE
PATH "Installation Directory" FORCE)
else()
- set(CMAKE_INSTALL_PREFIX "/usr/local" CACHE PATH "Installation
Directory" FORCE)
+ set(CMAKE_INSTALL_PREFIX "/usr/pkg" CACHE PATH "Installation
Directory" FORCE)
endif()
else()
# any cross-compiling
diff --git a/modules/videoio/src/cap_v4l.cpp b/modules/videoio/src/
cap_v4l.cpp
index 2fc41ce05e..2af652597d 100644
--- a/modules/videoio/src/cap_v4l.cpp
+++ b/modules/videoio/src/cap_v4l.cpp
@@ -222,6 +222,14 @@ make & enjoy!
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
+#include <inttypes.h>
+#include <stdint.h>
+#ifndef __u32
+#define __u32 uint32_t
+#endif
+#ifndef __s32
+#define __s32 int32_t
+#endif
#include <limits>
#include <poll.h>
@@ -276,8 +284,8 @@ typedef uint32_t __u32;
#endif
/* Defaults - If your board can do better, set it here. Set for the
most common type inputs. */
-#define DEFAULT_V4L_WIDTH 640
-#define DEFAULT_V4L_HEIGHT 480
+#define DEFAULT_V4L_WIDTH 1280
+#define DEFAULT_V4L_HEIGHT 720
#define DEFAULT_V4L_FPS 30
Hello Joel,
I have been trying to use graphics/opencv package from pkgsrc 2024Q4
using python3.12 but it seems that rapsberrypi4 CPU does not have NEON
neither FP16 required features:
netbsd-raspa4$ python3.12
Python 3.12.8 (main, Jan 10 2025, 00:27:43) [GCC 10.5.0] on netbsd10
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
******************************************************************
* FATAL ERROR: *
* This OpenCV build doesn't support current CPU/HW configuration *
* *
* Use OPENCV_DUMP_CONFIG=1 environment variable for details *
******************************************************************
Required baseline features:
ID=100 (NEON) - NOT AVAILABLE
ID= 9 (FP16) - NOT AVAILABLE
terminate called after throwing an instance of 'cv::Exception'
what(): OpenCV(3.4.20)
/pbulk/work/graphics/opencv/work/opencv-3.4.20/modules/core/src/system.cpp:706:
error: (-215:Assertion failed) Missing support for required CPU baseline
features. Check OpenCV build configuration and required CPU/HW setup. in
function 'initialize'
[1] Abort trap (core dumped) python3.12
I am not sure how to disable them.
netbsd-raspa4$ export OPENCV_DUMP_CONFIG=1
netbsd-raspa4$ python3.12
Python 3.12.8 (main, Jan 10 2025, 00:27:43) [GCC 10.5.0] on netbsd10
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
OpenCV build configuration is:
General configuration for OpenCV 3.4.20
=====================================
Version control: unknown
Platform:
Timestamp: 2025-01-10T01:14:46Z
Host: NetBSD 10.0 aarch64
CMake: 3.31.1
CMake generator: Unix Makefiles
CMake build tool:
/pbulk/work/graphics/opencv/work/.tools/bin/gmake
Configuration: Release
CPU/HW features:
Baseline: NEON FP16
C/C++:
Built as dynamic libs?: YES
C++11: YES
C++ Compiler:
/pbulk/work/graphics/opencv/work/.cwrapper/bin/c++ (ver 10.5.0)
C++ flags (Release): -O2 -I/usr/pkg/include -I/usr/include
-I/usr/pkg/include/python3.12 -I/usr/pkg/include/glib-2.0
-I/usr/pkg/include/gio-unix-2.0 -I/usr/pkg/lib/glib-2.0/include
-I/usr/X11R7/include -I/usr/pkg/include/freetype2
-I/usr/pkg/include/harfbuzz -I/usr/X11R7/include/libdrm -fsigned-char
-W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point
-Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self
-Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override
-Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3
-Wno-strict-overflow -fdiagnostics-show-option -pthread
-fomit-frame-pointer -ffunction-sections -fdata-sections
-fvisibility=hidden -fvisibility-inlines-hidden -DNDEBUG -DNDEBUG
C++ flags (Debug): -O2 -I/usr/pkg/include -I/usr/include
-I/usr/pkg/include/python3.12 -I/usr/pkg/include/glib-2.0
-I/usr/pkg/include/gio-unix-2.0 -I/usr/pkg/lib/glib-2.0/include
-I/usr/X11R7/include -I/usr/pkg/include/freetype2
-I/usr/pkg/include/harfbuzz -I/usr/X11R7/include/libdrm -fsigned-char
-W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point
-Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self
-Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override
-Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3
-Wno-strict-overflow -fdiagnostics-show-option -pthread
-fomit-frame-pointer -ffunction-sections -fdata-sections
-fvisibility=hidden -fvisibility-inlines-hidden -g -DDEBUG -D_DEBUG
C Compiler:
/pbulk/work/graphics/opencv/work/.cwrapper/bin/gcc
C flags (Release): -O2 -I/usr/pkg/include -I/usr/include
-I/usr/pkg/include/python3.12 -I/usr/pkg/include/glib-2.0
-I/usr/pkg/include/gio-unix-2.0 -I/usr/pkg/lib/glib-2.0/include
-I/usr/X11R7/include -I/usr/pkg/include/freetype2
-I/usr/pkg/include/harfbuzz -I/usr/X11R7/include/libdrm -fsigned-char
-W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat
-Wformat-security -Wmissing-declarations -Wmissing-prototypes
-Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow
-Wuninitialized -Wno-comment -Wimplicit-fallthrough=3
-Wno-strict-overflow -fdiagnostics-show-option -pthread
-fomit-frame-pointer -ffunction-sections -fdata-sections
-fvisibility=hidden -DNDEBUG -DNDEBUG
C flags (Debug): -O2 -I/usr/pkg/include -I/usr/include
-I/usr/pkg/include/python3.12 -I/usr/pkg/include/glib-2.0
-I/usr/pkg/include/gio-unix-2.0 -I/usr/pkg/lib/glib-2.0/include
-I/usr/X11R7/include -I/usr/pkg/include/freetype2
-I/usr/pkg/include/harfbuzz -I/usr/X11R7/include/libdrm -fsigned-char
-W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat
-Wformat-security -Wmissing-declarations -Wmissing-prototypes
-Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow
-Wuninitialized -Wno-comment -Wimplicit-fallthrough=3
-Wno-strict-overflow -fdiagnostics-show-option -pthread
-fomit-frame-pointer -ffunction-sections -fdata-sections
-fvisibility=hidden -g -DDEBUG -D_DEBUG
Linker flags (Release): -Wl,-zrelro -L/usr/pkg/lib
-Wl,-R/usr/pkg/lib -L/usr/lib -Wl,-R/usr/lib -L/usr/X11R7/lib
-Wl,-R/usr/X11R7/lib -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined
Linker flags (Debug): -Wl,-zrelro -L/usr/pkg/lib
-Wl,-R/usr/pkg/lib -L/usr/lib -Wl,-R/usr/lib -L/usr/X11R7/lib
-Wl,-R/usr/X11R7/lib -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined
ccache: NO
Precompiled headers: NO
Extra dependencies: m pthread
3rdparty dependencies:
OpenCV modules:
To be built: calib3d core dnn features2d flann
highgui imgcodecs imgproc ml objdetect photo python3 shape stitching
superres ts video videoio videostab
Disabled: world
Disabled by dependency: -
Unavailable: cudaarithm cudabgsegm cudacodec
cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect
cudaoptflow cudastereo cudawarping cudev java python2 viz
Applications: tests perf_tests apps
Documentation: NO
Non-free algorithms: NO
GUI:
GTK+: YES (ver 3.24.43)
GThread : YES (ver 2.82.2)
GtkGlExt: NO
VTK support: NO
Media I/O:
ZLib: /usr/lib/libz.so (ver 1.2.13)
JPEG: /usr/pkg/lib/libjpeg.so (ver 90)
WEBP: /usr/pkg/lib/libwebp.so (ver encoder:
0x020f)
PNG: /usr/pkg/lib/libpng16.so (ver 1.6.44)
TIFF: /usr/pkg/lib/libtiff.so (ver 42 / 4.7.0)
OpenEXR: OpenEXR::OpenEXR (ver 3.3.2)
HDR: YES
SUNRASTER: YES
PXM: YES
Video I/O:
DC1394: NO
GStreamer: NO
libv4l/libv4l2: NO
v4l/v4l2: sys/videoio.h
Parallel framework: pthreads
Trace: YES (with Intel ITT)
Other third-party libraries:
Lapack: YES (cblas lapacke blas lapack)
Custom HAL: YES (carotene (ver 0.0.1))
Protobuf:
/pbulk/work/graphics/opencv/work/.buildlink/lib/libprotobuf.so.28.3.0
(28.3.0)
OpenCL: YES (no extra features)
Include path:
/pbulk/work/graphics/opencv/work/opencv-3.4.20/3rdparty/include/opencl/1.2
Link libraries: Dynamic load
Python 3:
Interpreter: /usr/pkg/bin/python3.12 (ver 3.12.8)
Libraries: /usr/pkg/lib/libpython3.12.so (ver 3.12.8)
numpy:
/usr/pkg/lib/python3.12/site-packages/numpy/_core/include (ver 2.1.3)
install path:
lib/python3.12/site-packages/cv2/python-3.12
Python (for build): /usr/pkg/bin/python3.12
Install to: /usr/pkg
-----------------------------------------------------------------
******************************************************************
* FATAL ERROR: *
* This OpenCV build doesn't support current CPU/HW configuration *
* *
* Use OPENCV_DUMP_CONFIG=1 environment variable for details *
******************************************************************
Required baseline features:
ID=100 (NEON) - NOT AVAILABLE
ID= 9 (FP16) - NOT AVAILABLE
terminate called after throwing an instance of 'cv::Exception'
what(): OpenCV(3.4.20)
/pbulk/work/graphics/opencv/work/opencv-3.4.20/modules/core/src/system.cpp:706:
error: (-215:Assertion failed) Missing support for required CPU baseline
features. Check OpenCV build configuration and required CPU/HW setup. in
function 'initialize'
[1] Abort trap (core dumped) python3.12
netbsd-raspa4$
I do not figure how to overcome it, it surpasses me :-)
CPU/HW features:
Baseline: NEON FP16
How to disable them for compile opencv again?
Thanks.
Regards.
Home |
Main Index |
Thread Index |
Old Index