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2020-03-18libcamera: pipeline: uvcvideo: Translate from V4L2 to DRM pixel formatsNiklas Söderlund
When generating a camera configuration, pixel formats from the video device are used directly. They however contain V4L2 pixel format FourCCs, not DRM pixel format FourCCs. Translate the pixel formats to DRM before using them in the camera configuration. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-18libcamera: pipeline: vimc: Remove internal usage of ImageFormatsNiklas Söderlund
There is no need to use the ImageFormats helper to generate a map of PixelFormat to sizes, use std::map directly. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-18test: v4l2_videodevice: buffer_cache: Use DRM pixel formatNiklas Söderlund
The pixel format used in the stream configuration is from V4L2 but should be from DRM, fix it. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-18libcamera: pixelformats: include linux/drm_fourcc.hNiklas Söderlund
Instead of having to include linux/drm_fourcc.h everywhere a DRM FourCC is used in conjunction with PixelFormat include the header directly in pixelformats.h. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-18libcamera: Use PixelFormat instead of unsigned int where appropriateNiklas Söderlund
Use the PixelFormat instead of unsigned int where a pixel format is to be used. PixelFormat is defined as an unsigned int but is about to be turned into a class to add functionality. There is no functional change in this patch. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-18tests: remove IPA_PROXY_PATH environment variableKaaira Gupta
The tests declare a hard-coded LIBCAMERA_IPA_PROXY_PATH to allow tests to run from tests-suite. Now that the proxy path is determined at runtime, we can remove the redundant setting of LIBCAMERA_IPA_PROXY_PATH for tests. Signed-off-by: Kaaira Gupta <kgupta@es.iitr.ac.in> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-18libcamera: ipa_proxy: search for proxy in build treeKaaira Gupta
When libcamera is built and tested before installing, it will be unable to locate the path to proxy workers, or previously installed files in the system path may be incorrect to load. Hence, when libcamera is not installed, but is running from a build tree, identify the location of that tree by using libcameraPath(), and from that point add relative path to the proxy workers directory. Signed-off-by: Kaaira Gupta <kgupta@es.iitr.ac.in> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-18libcamera: utils: Move libcamera build path lookup to utilsKaaira Gupta
The IPA proxy manager will need to find the libcamera build path exactly the same way as the IPA module mnager. Move the isLibcameraInstalled() and libcameraPath() functions to utils to make them reusable. Signed-off-by: Kaaira Gupta <kgupta@es.iitr.ac.in> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-18libcamera: ipa_proxy: rearrange proxies precedenceKaaira Gupta
User environment path in LIBCAMERA_IPA_PROXY_PATH should take precedence over system loading locations. Change precedence accordingly Signed-off-by: Kaaira Gupta <kgupta@es.iitr.ac.in> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-18libcamera: ipa_proxy: use utils::split()Kaaira Gupta
Replace the manual string splitting with utils::split() Signed-off-by: Kaaira Gupta <kgupta@es.iitr.ac.in> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-18cam: Create stream names after configuring the cameraNiklas Söderlund
The stream in the stream configuration is not filled in before we configure the camera, move the generating and caching of names after the configuration. Without this fix writing multiple streams to disk overwrites the frames as the filenames are not unique. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-16utils: checkstyle: Add a ShellCheckerKieran Bingham
Hook the utility 'shellcheck' into our checkstyle helper to automatically verify shell script additions. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-16qcam: format_convertor: Extend 32 bit ARGB format combinationsKieran Bingham
Add further support to the pixel format convertor to allow ARGB, RGBA, and ABGR formats to be displayed in qcam. Blank lines are added between the sections for NV, RGB, YUV, and MJPEG configurations. The implementation of the RGB conversions are highly inefficient, and where possible should be extended to use hardware accelerations such as OpenGL, or in the event that the input format is identical (or compatible) with the output format - a more optimised memcpy should be implemented. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-08libcamera: controls: Fix strict aliasing violationLaurent Pinchart
gcc 8.3.0 for ARM complains about strict aliasing violations: ../../src/libcamera/controls.cpp: In member function ‘void libcamera::ControlValue::release()’: ../../src/libcamera/controls.cpp:111:13: error: dereferencing type-punned pointer will break strict-aliasing rules [-Werror=strict-aliasing] delete[] *reinterpret_cast<char **>(&storage_); Fix it and simplify the code at the same time. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-03-08test: file-descriptor: Fix undefined O_TMPFILE compilation errorLaurent Pinchart
O_TMPFILE is not defined by all libc implementations. libcamera has an internal definition in utils.h to work around this. Include utils.h in the test to fix the compilation error. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-03-08v4l2: v4l2_camera_proxy: Fix sign compare compilation errorLaurent Pinchart
When compiling for ARM and uClibc, gcc-8.3.0 complains about comparison of integer expressions of different signedness: ../../src/v4l2/v4l2_camera_proxy.cpp: In member function ‘void* V4L2CameraProxy::mmap(void*, size_t, int, int, off_t)’: ../../src/v4l2/v4l2_camera_proxy.cpp:88:25: error: comparison of integer expressions of different signedness: ‘unsigned int’ and ‘off_t’ {aka ‘long int’} [-Werror=sign-compare] if (index * sizeimage_ != offset || length != sizeimage_) { ~~~~~~~~~~~~~~~~~~~^~~~~~~~~ Fix the compilation error with a cast. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-03-08v4l2: v4l2_compat: Use correct libcamera_dep dependencyLaurent Pinchart
The v4l2-compat shared library is declared as depending on libcamera_deps. This is not correct, as libcamera_deps contains the dependencies of libcamera itself. The correct dependency for users of libcamera is libcamera_dep. Fixing this allows dropping libcamera_includes from the list of includes required by v4l2-compat, and libcamera from the link_with list, as they are already contained in libcamera_dep. We however need to add an explicit dependency on libdl which was previously provided by libcamera_deps. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-03-08cam: Link against libatomic if neededLaurent Pinchart
The cam application makes use if std::atomic<>, link against libatomic if needed. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-03-08libcamera: meson: Make libatomic and libdl dependencies reusableLaurent Pinchart
libcamera.so links against libatomic and libdl, and handles those dependencies directly in the shared_object() call. More components within libcamera will need those dependencies, extract them to named variables to make them reusable. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-03-08include: libcamera: meson: Add libcamera.h to the libcamera_api arrayLaurent Pinchart
The libcamera_api array is meant to contain all the headers from the libcamera public API, for the purpose of generating documentation and creating the libcamera_dep dependency. libcamera.h is part of the libcamera public API, add it to the array. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-03-08include: libcamera: meson: Add control headers to the libcamera_api arrayKieran Bingham
The libcamera_api array is meant to contain all the headers from the libcamera public API, for the purpose of generating documentation and creating the libcamera_dep dependency. The generated control headers are part of the libcamera public API, and used to be included in the libcamera_api array until commit f870591a9bf5 ("libcamera: properties: Add location property") inadvertently removed them. Add them back. Fixes: f870591a9bf5 ("libcamera: properties: Add location property") Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> [Split the change out and reworded the commit message] Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-03-08include: libcamera: Improve automation of libcamera.h generationLaurent Pinchart
The gen-header.sh script that generates libcamera.h takes all .h files in the include/libcamera/ directory, and manually adds the generated control_ids.h and version.h. This is fragile, as shown by the failure to add property_ids.h to the list in commit f870591a9bf5 ("libcamera: properties: Add location property"). To avoid future omissions, take all the .h.in files into account to generate libcamera.h. This also fixes the missing property_ids.h. Fixes: f870591a9bf5 ("libcamera: properties: Add location property") Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-03-07gst: Fix GLib detectionLaurent Pinchart
Commit 17cccc68a88f ("Add GStreamer plugin and element skeleton") has gained a last minute fix for a clang compilation error with GLib prior to v2.63.0. The fix wasn't properly tested, and failed to check the GLib dependency correctly. This resulted in compilation of the GStreamer element to always be disabled. Fix this by changing the GLib package name from 'glib' to 'glib-2.0'. Fixes: 17cccc68a88f ("Add GStreamer plugin and element skeleton") Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
2020-03-07gst: Turn the top-level plugin file gstlibcamera.c into a C++ fileLaurent Pinchart
The top-level plugin file gstlibcamera.c is the only C source file in the whole libcamera GStreamer element. To avoid specifying both C and C++ compiler arguments in the future, turn it into a C++ file. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
2020-03-07gst: Document dependencies and quick usageNicolas Dufresne
This is a quick startup guide allowing to build and use the GStreamer element from the libcamera source tree. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: libcamerasrc: Prevent src task deadlock on exhausted buffer poolJakub Adam
Allow GstLibcameraPool to notify the source when a new buffer has become available in a previously exhausted buffer pool. This can be used to resume a src task that got paused because it couldn't acquire a buffer. Without this change the src task will never resume from pause once the pool gets exhausted. To trigger the deadlock (it doesn't happen every time), run: gst-launch-1.0 libcamerasrc ! queue ! glimagesink Signed-off-by: Jakub Adam <jakub.adam@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: utils: Factor-out the task resume helperJakub Adam
Task resume will be added in the core GStreamer API in the future and we will need to call this in another location in the following patches. Signed-off-by: Jakub Adam <jakub.adam@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: libcamerasrc: Add a TODO commentNicolas Dufresne
This is to guide upcoming contributors toward what is left to do to get toward a production ready element. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: libcamerasrc: Implement timestamp supportNicolas Dufresne
This is an experimental patch adding timestamp support to the libcamerasrc element. This patch currently assume that the driver timestamp are relative to the system monotonic clock. Without a reference clock source, the timestamp are otherwise unusable, and without timestamp only minor use case can be achieved. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: libcamerasrc: Implement initial streamingNicolas Dufresne
With this patch, the element is now able to push buffers to the next element in the graph. The buffers are currently missing any metadata like timestamp, sequence number. This will be added in the next commit. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: pad: Add method to store retrieve pending buffersNicolas Dufresne
These will be useful for streaming. The requestComplete callback will store the buffers on each pads so that the _run() can pick them up and push them through the pads from a streaming thread. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: Add getters for Stream and FrameBufferNicolas Dufresne
This adds getters on pad/pool/allocator so that we can retrieve the Stream or FrameBuffer. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: libcamerasrc: Allocate and release buffersNicolas Dufresne
Setup the allocation and the release of buffers in the element. We have one pooling GstAllocator that wraps the FrameBufferAllocator and tracks the lifetime of FrameBuffer objects. Then, for each pad we have a GstBufferPool object which is only used to avoid re-allocating the GstBuffer structure every time we push a buffer. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: libcamerapad: Allow storing a poolNicolas Dufresne
This adds get/set helper to store a pool on the pad. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: Add a pool and an allocator implementationNicolas Dufresne
This is needed to track the lifetime of the FrameBufferAllocator in relation to the GstBuffer/GstMemory objects travelling inside GStreamer. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: libcamerasrc: Push segment eventNicolas Dufresne
Now that we have stream-start and caps, we can now push a segment event to announce what time will our buffer correlate to. For live sources this is just an open segment in time format. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: libcamerasrc: Implement minimal caps negotiationNicolas Dufresne
This is not expected to work in every possible cases, but should be sufficient as an initial implementation. What it does is that it turns the StreamFormats into caps and queries downstream caps with that as a filter. The result is the subset of caps that can be used. We then keep the first structure in that result and fixate using the default values found in StreamConfiguration as a default in case a range is available. We then validate this configuration and turn the potentially modified configuration into caps that we push downstream. Note that we trust the order in StreamFormats as being sorted best first, but this is not currently in libcamera. A todo has been added in the head of this file as a reminder to fix that in the core. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: utils: Add StreamConfiguration helpersNicolas Dufresne
This adds helpers to deal with the conversion from StreamConfiguration to caps and vice-versa. This is needed to implement caps negotiation. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: libcamerasrc: Send stream start eventNicolas Dufresne
Prior to sending caps, we need to send a stream-start event. This requires generating a stream and a group id. The stream id is random for live sources and the group id is shared across all pads. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: libcamerasrc: Store the srcpad in a vectorNicolas Dufresne
This will allow implementing generic algorithm even if we cannot request pads yet. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: libcamerapad: Add a method to access the roleNicolas Dufresne
Each pad can have a different roles. Users will have to request and configure their pads role before moving to a higher state. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: libcamerasrc: Add a task for the streaming threadNicolas Dufresne
Use a GstTask as our internal streaming thread. Unlike GstBaseSrc, we will be running a streaming thread at the element level rather than per pad. This is needed to combine buffer request for multiple pads. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: libcamerasrc: Implement selection and acquisitionNicolas Dufresne
This adds code to select and acquire a camera. With this, it is now possible to run a pipeline like: gst-launch-1.0 libcamerasrc ! fakesink Though no buffer will be streamed yet. In this function, we implement the change_state() virtual method to trigger actions on specific state transitions. Note that we also return GST_STATE_CHANGE_NO_PREROLL in GST_STATE_CHANGE_READY_TO_PAUSED and GST_STATE_CHANGE_PLAYING_TO_PAUSED transitions as this is required for all live sources. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: libcamerasrc: Add a debug categoryNicolas Dufresne
This will allow selecting libcamerasrc traces with the following environment: GST_DEBUG=libcamerasrc:7 Or all libcamera GStreamer element traces using GST_DEBUG="libcamera*:7" Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: libcamerasrc: Add camera-name propertyNicolas Dufresne
This property will be used to select by name the camera to use. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: libcamerasrc: Allocate and add static padNicolas Dufresne
This pad will always be present and will allow simple pipeline to be used to stream from the camera. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: Add pads to the sourceNicolas Dufresne
This simply adds the boiler plate for pads on the source element. The design is that we have one pad, called "src", that will always be present, and then more pads can be requested prior in READY or less state. Initially pads have one property "stream-role" that let you decide which role this pad will have. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: utils: Add simple scoped lockers for GMutex and GRectMutexNicolas Dufresne
While GLib has locker implementation already using g_autoptr(), recursive mutex locker was only introduced in recent GLib. Implement a simple locker for GMutex and GRectMutex in order to allow making locking simpler and safer. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: Add initial device providerNicolas Dufresne
This feature is used with GstDeviceMonitor in order to enumerate and monitor devices to be used with the source element. The resulting GstDevice implementation is also used by application to abstract the configuration of the source element. Implementation notes: - libcamera does not support polling yet - The device ID isn't unique in libcamera yet - The "name" property does not yet exist in libcamerasrc yet Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-03-07gst: Add utility to convert StreamFormats to GstCapsNicolas Dufresne
This transforms the basic information found in StreamFormats to GstCaps. This can be handy to reply to early caps query or inside a device provider. Note that we ignored generated range as they are harmful to caps negotiation. We also don't simplify the caps for readability reasons, so some of the discrete value may be included in a range. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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