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    "msgid": "<20260702145317.86482-1-david.plowman@raspberrypi.com>",
    "date": "2026-07-02T14:39:16",
    "name": "[0/1] Make Gstreamer prefer non-raw caps",
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        "url": "https://patchwork.libcamera.org/api/people/42/?format=api",
        "name": "David Plowman",
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            "date": "2026-07-02T14:39:16",
            "name": "Make Gstreamer prefer non-raw caps",
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        "From": "David Plowman <david.plowman@raspberrypi.com>",
        "To": "libcamera-devel@lists.libcamera.org",
        "Cc": "David Plowman <david.plowman@raspberrypi.com>",
        "Subject": "[PATCH 0/1] Make Gstreamer prefer non-raw caps",
        "Date": "Thu,  2 Jul 2026 15:39:16 +0100",
        "Message-ID": "<20260702145317.86482-1-david.plowman@raspberrypi.com>",
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        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "Hi everyone\n\nAnother episode in my side-quest to make gstreamer/libcamera work\nbetter on the Pi. I thought a cover-note was desirable because I'm not\n100% sure about these bits of gstreamer, so some background may help.\n\nBasically I was trying to run \"cheese\". It uses libcamera through\ngstreamer so I thought it should stand a fighting chance.\nUnfortuntely, though, I found that its preference for fixed size\noutputs (over ranges) gave it a nasty habit of going for raw (Bayer)\nimage formats which general-purpose camera apps like \"cheese\" can't\nhandle.\n\nAnyway, I've rearranged it a bit to perform the same logic as before\n(preferring fixed size over ranges), but _separately_ for raw and\nnon-raw streams. Finally, it will prefer non-raw over raw, if it\ncan. So folks who explicitly want raw will still get it, but\notherwise, those general-purpose apps should mostly get non-raw.\n\nI think this makes sense, and may work for everyone, but it's hard to\nbe sure so it would be good to have some other opinions!\n\nThanks in advance\n\nDavid\n\nDavid Plowman (1):\n  gstreamer: Prefer non-raw (i.e. non-Bayer) formats in caps negotiation\n\n src/gstreamer/gstlibcamera-utils.cpp | 96 +++++++++++++++++++++-------\n src/gstreamer/gstlibcamera-utils.h   |  2 +-\n src/gstreamer/gstlibcamerasrc.cpp    |  3 +-\n 3 files changed, 75 insertions(+), 26 deletions(-)"
}