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libcamera: formats: Support V4L2 non-contiguous formats

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V4L2 describes multi-planar formats with different 4CCs depending on
whether or not the planes are stored contiguously in memory. Support
this when translating between PixelFormat and V4L2PixelFormat.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
This commit is contained in:
Laurent Pinchart
2021-09-07 19:17:57 +03:00
parent 94cbaa381a
commit 1b0bd492c2
3 changed files with 240 additions and 60 deletions
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src/libcamera/v4l2_pixelformat.cpp
+9 -2
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@@ -67,12 +67,19 @@ const std::map<V4L2PixelFormat, PixelFormat> vpf2pf{
/* YUV planar formats. */
{ V4L2PixelFormat(V4L2_PIX_FMT_NV16), formats::NV16 },
{ V4L2PixelFormat(V4L2_PIX_FMT_NV16M), formats::NV16 },
{ V4L2PixelFormat(V4L2_PIX_FMT_NV61), formats::NV61 },
{ V4L2PixelFormat(V4L2_PIX_FMT_NV61M), formats::NV61 },
{ V4L2PixelFormat(V4L2_PIX_FMT_NV12), formats::NV12 },
{ V4L2PixelFormat(V4L2_PIX_FMT_NV12M), formats::NV12 },
{ V4L2PixelFormat(V4L2_PIX_FMT_NV21), formats::NV21 },
{ V4L2PixelFormat(V4L2_PIX_FMT_NV21M), formats::NV21 },
{ V4L2PixelFormat(V4L2_PIX_FMT_YUV420), formats::YUV420 },
{ V4L2PixelFormat(V4L2_PIX_FMT_YUV420M), formats::YUV420 },
{ V4L2PixelFormat(V4L2_PIX_FMT_YVU420), formats::YVU420 },
{ V4L2PixelFormat(V4L2_PIX_FMT_YVU420M), formats::YVU420 },
{ V4L2PixelFormat(V4L2_PIX_FMT_YUV422P), formats::YUV422 },
{ V4L2PixelFormat(V4L2_PIX_FMT_YUV422M), formats::YUV422 },
/* Greyscale formats. */
{ V4L2PixelFormat(V4L2_PIX_FMT_GREY), formats::R8 },
@@ -202,13 +209,13 @@ PixelFormat V4L2PixelFormat::toPixelFormat() const
* \return The V4L2PixelFormat corresponding to \a pixelFormat
*/
V4L2PixelFormat V4L2PixelFormat::fromPixelFormat(const PixelFormat &pixelFormat,
[[maybe_unused]] bool multiplanar)
bool multiplanar)
{
const PixelFormatInfo &info = PixelFormatInfo::info(pixelFormat);
if (!info.isValid())
return V4L2PixelFormat();
return info.v4l2Format;
return multiplanar ? info.v4l2Formats.multi : info.v4l2Formats.single;
}
} /* namespace libcamera */