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2019-02-06stream, uvc: add uvc_stream_set_frame_ratePaul Elder
We would like to be able to set the frame rate of the video source of a stream. This patch adds such a function to set the source's frame rate from the stream. The frame rate is set right after the format is set. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2019-02-06v4l2-source: implement set_frame_rate opPaul Elder
Implement the video source op set_frame_rate for v4l2-source video source. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2019-02-06video-source: add video_source_set_frame_ratePaul Elder
We would like to be able to set the frame rate for video sources. This patch adds a set_frame_rate op for video sources, along with a wrapper to call video sources' set_frame_rate functions. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2019-02-06v4l2: add v4l2_set_frame_ratePaul Elder
We would like to be able to set the frame rate of video sources. This patch adds such a function for v4l2-based video sources to use. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2018-07-31lib: configfs: Detect configfs mount pointKieran Bingham
Parse /proc/mounts to identify the correct mount location of the ConfigFS filesystem. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-07-31lib: Compile custom glob() implementation for AndroidPaul Elder
The Android C library doesn't provide the glob() function which we use in the configfs code. Add conditional compilation to cmake such that a local copy of glob is automatically compiled if glob isn't provided. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-07-31lib: glob: Fix compilation on AndroidLaurent Pinchart
The glibc glob() implementation doesn't compile on Android due to missing support for getlogin_r (before Android ABI 28) and to missing __THROW, __THROWNL and __attribute_noinline__ macros. getlogin_r is only used to implement support for the '~' path component which we don't use in the uvc-gadget library, so we can compile it out. The three macros can safely be defined as no-op. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-07-31lib: glob: Fix compilationLaurent Pinchart
The glibc glob() implementation seems to be meant to be compilable outside of glibc, but that clearly hasn't been tested for some time. Fix compilation. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-07-31lib: Import glob.c from glibc 2.26Laurent Pinchart
The Android libc implementation (bionic) doesn't provide the glob() function. To enable compilation of the UVC gadget library for Android, import the glibc glob() implementation. The glob.c and glob.h files are imported unmodified to ease copyright management, even if they don't compile as-is. Compilation will be fixed separately. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-07-31lib: configfs: Globalize nested configfs callback functionsPaul Elder
Android now uses clang as the default C compiler, and gcc support is deprecated. clang doesn't support nested functions, which were used to implement callback functions in the ConfigFS code. We thus move the callbacks to the global scope. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-07-31lib: configfs: Fix asprintf return value usageKieran Bingham
The asprintf function returns -1, and leaves the first parameter undefined in case of an allocation error. This conflicts with the code's assumption that the parameter is set NULL on error. Check all return values of asprintf, and ensure that the string parameter is not used as a return value on error paths. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-06-12uvc: check ioctl return value for errorPaul Elder
There is code that is meant to check for the error of an ioctl, but the return variable that it checks isn't actually assigned from the ioctl. Assign the return value before checking it. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> [Fixed error message] Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-06-12Import the g_uvc.h header from the kernel sourcesLaurent Pinchart
In order to avoid depending on an external kernel source tree recent enough to provide the g_uvc.h header, import in the the project. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-06-12lib: Relicense code under the LGPL-2.1+Laurent Pinchart
To allow usage of the UVC gadget library in closed-source or otherwise GPL-incompatible applications, relicense the library under the terms of the LGPL v2.1 or later, as published by the Free Software Foundation. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-06-12Update copyright dates and ownerLaurent Pinchart
Ideas on Board SPRL, the original copyright owner of the UVC gadget application code, has been dissolved. All company copyrights have been transferred to Laurent Pinchart. Update the copyright notices to accordingly. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-06-12Use SPDX headersLaurent Pinchart
Replace the boilerplate copyright headers with an SPDX header to ease license compliance. This doesn't change the license of any of the files. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2018-06-12Split UVC gadget into a library and test applicationLaurent Pinchart
Split the project into a UVC gadget library and a test application. To avoid rolling out a custom build system, switch to CMake. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>