libcamera: v4l2_videodevice: Drop toV4L2PixelFormat()

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>

1 files changed, 0 insertions, 17 deletions

diff --git a/src/libcamera/v4l2_videodevice.cpp b/src/libcamera/v4l2_videodevice.cpp
index 4e1c2b7c..84ccb974 100644
--- a/src/libcamera/v4l2_videodevice.cpp
+++ b/src/libcamera/v4l2_videodevice.cpp
@@ -1688,23 +1688,6 @@ V4L2VideoDevice::fromEntityName(const MediaDevice *media,
 }
 
 /**
- * \brief Convert \a PixelFormat to its corresponding V4L2 FourCC
- * \param[in] pixelFormat The PixelFormat to convert
- *
- * For multiplanar formats, the V4L2 format variant (contiguous or
- * non-contiguous planes) is selected automatically based on the capabilities
- * of the video device. If the video device supports the V4L2 multiplanar API,
- * non-contiguous formats are preferred.
- *
- * \return The V4L2_PIX_FMT_* pixel format code corresponding to \a pixelFormat
- */
-V4L2PixelFormat V4L2VideoDevice::toV4L2PixelFormat(const PixelFormat &pixelFormat)
-{
-	return V4L2PixelFormat::fromPixelFormat(pixelFormat,
-						caps_.isMultiplanar());
-}
-
-/**
  * \class V4L2M2MDevice
  * \brief Memory-to-Memory video device
  *