PawletOS/external_libcamera
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

libcamera: v4l2_videodevice: Drop toV4L2PixelFormat()

Browse Source 
The V4L2VideoDevice::toV4L2PixelFormat() function is incorrectly
implemented, as it will pick a multi-planar format if the device
supports the multi-planar API, even if only single-planar formats are
supported. This currently works because the implementation calls
V4L2PixelFormat::fromPixelFormat(), which ignores the multiplanar
argument and always returns a single-planar format.

Fixing this isn't trivial. As we don't need to support multi-planar V4L2
formats at this point, drop the function instead of pretending
everything is fine, and call V4L2PixelFormat::fromPixelFormat() directly
from pipeline handlers. As the single-planar case is the most common,
set the multiplanar argument to false by default to avoid long lines.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
This commit is contained in:
Laurent Pinchart
2021-09-04 01:13:58 +03:00
parent 8e18f8d45f
commit 395d43d6d7
12 changed files with 26 additions and 47 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/libcamera/pipeline/simple/simple.cpp
+2 -2
View File
@@ -826,7 +826,7 @@ CameraConfiguration::Status SimpleCameraConfiguration::validate()
return Invalid;
} else {
V4L2DeviceFormat format;
format.fourcc = data_->video_->toV4L2PixelFormat(cfg.pixelFormat);
format.fourcc = V4L2PixelFormat::fromPixelFormat(cfg.pixelFormat);
format.size = cfg.size;
int ret = data_->video_->tryFormat(&format);
@@ -915,7 +915,7 @@ int SimplePipelineHandler::configure(Camera *camera, CameraConfiguration *c)
return ret;
/* Configure the video node. */
V4L2PixelFormat videoFormat = video->toV4L2PixelFormat(pipeConfig->captureFormat);
V4L2PixelFormat videoFormat = V4L2PixelFormat::fromPixelFormat(pipeConfig->captureFormat);
V4L2DeviceFormat captureFormat;
captureFormat.fourcc = videoFormat;