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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2022-09-03 17:44:00 +0300
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2022-09-07 00:32:08 +0300
commitf98919307e411c57f24de7587b22ac90a7850bdc (patch)
treeae5eb4f9358d9aed2ebeb844fe953455c9d3683f /src/libcamera
parent52660f2b13dd9f1032de5e50c416845def66a838 (diff)
pipeline: uvcvideo: Cache supported formats in UVCCameraData
Populate and cache the list of supported formats in UVCCameraData::init(), to avoid repeating the operation every time generateConfiguration() is called. Combine this with the search for the largest size advertised by the camera to avoid iterating over the formats twice in init(). Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Tested-by: Christian Rauch <Rauch.Christian@gmx.de>
Diffstat (limited to 'src/libcamera')
-rw-r--r--src/libcamera/pipeline/uvcvideo/uvcvideo.cpp44
1 files changed, 22 insertions, 22 deletions
diff --git a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp
index 22b67faf..be0fbaea 100644
--- a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp
+++ b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp
@@ -50,6 +50,7 @@ public:
std::unique_ptr<V4L2VideoDevice> video_;
Stream stream_;
+ std::map<PixelFormat, std::vector<SizeRange>> formats_;
private:
bool generateId();
@@ -186,15 +187,7 @@ CameraConfiguration *PipelineHandlerUVC::generateConfiguration(Camera *camera,
if (roles.empty())
return config;
- V4L2VideoDevice::Formats v4l2Formats = data->video_->formats();
- std::map<PixelFormat, std::vector<SizeRange>> deviceFormats;
- for (const auto &format : v4l2Formats) {
- PixelFormat pixelFormat = format.first.toPixelFormat();
- if (pixelFormat.isValid())
- deviceFormats[pixelFormat] = format.second;
- }
-
- StreamFormats formats(deviceFormats);
+ StreamFormats formats(data->formats_);
StreamConfiguration cfg(formats);
cfg.pixelFormat = formats.pixelformats().front();
@@ -445,6 +438,26 @@ int UVCCameraData::init(MediaDevice *media)
return -EINVAL;
}
+ /*
+ * Populate the map of supported formats, and infer the camera sensor
+ * resolution from the largest size it advertises.
+ */
+ Size resolution;
+ for (const auto &format : video_->formats()) {
+ PixelFormat pixelFormat = format.first.toPixelFormat();
+ if (!pixelFormat.isValid())
+ continue;
+
+ formats_[pixelFormat] = format.second;
+
+ const std::vector<SizeRange> &sizeRanges = format.second;
+ for (const SizeRange &sizeRange : sizeRanges) {
+ if (sizeRange.max > resolution)
+ resolution = sizeRange.max;
+ }
+ }
+
+ /* Populate the camera properties. */
properties_.set(properties::Model, utils::toAscii(media->model()));
/*
@@ -475,19 +488,6 @@ int UVCCameraData::init(MediaDevice *media)
properties_.set(properties::Location, location);
- /*
- * Get the current format in order to initialize the sensor array
- * properties.
- */
- Size resolution;
- for (const auto &it : video_->formats()) {
- const std::vector<SizeRange> &sizeRanges = it.second;
- for (const SizeRange &sizeRange : sizeRanges) {
- if (sizeRange.max > resolution)
- resolution = sizeRange.max;
- }
- }
-
properties_.set(properties::PixelArraySize, resolution);
properties_.set(properties::PixelArrayActiveAreas, { Rectangle(resolution) });

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