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libcamera: v4l2_videodevice: Drop toV4L2PixelFormat()

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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

2
include/libcamera/internal/v4l2_pixelformat.h
View file

@ -38,7 +38,7 @@ public:
PixelFormat toPixelFormat() const;
static V4L2PixelFormat fromPixelFormat(const PixelFormat &pixelFormat,
bool multiplanar);
bool multiplanar = false);
private:
uint32_t fourcc_;

2
include/libcamera/internal/v4l2_videodevice.h
View file

@ -212,8 +212,6 @@ public:
static std::unique_ptr<V4L2VideoDevice>
fromEntityName(const MediaDevice *media, const std::string &entity);
V4L2PixelFormat toV4L2PixelFormat(const PixelFormat &pixelFormat);
protected:
std::string logPrefix() const override;