From: Benjamin Gaignard <benjamin.gaignard@collabora.com>
To: mchehab@kernel.org, ezequiel@vanguardiasur.com.ar,
hverkuil-cisco@xs4all.nl
Cc: linux-media@vger.kernel.or, linux-kernel@vger.kernel.org,
linux-rockchip@lists.infradead.org, kernel@collabora.com,
Benjamin Gaignard <benjamin.gaignard@collabora.com>
Subject: [PATCH v3 0/2] Enumerate all pixels formats
Date: Tue, 9 Jul 2024 18:17:08 +0200 [thread overview]
Message-ID: <20240709161710.83109-1-benjamin.gaignard@collabora.com> (raw)
The goal of this series is to let userland applications enumerate
all the supported pixels formats of a stateless decoder without
setting all the possible codec-dependent control.
That offer a simplest solution for applications to discover
supported pixels formats and possibly let them doing smarter
choice between stateless decoders.
An example of how it can be used in GStreamer to discover the
supported pixels formats for stateless decoder is available here:
https://gitlab.freedesktop.org/benjamin.gaignard1/gstreamer/-/commits/v4l2codecs_enum_all_supported_formats?ref_type=heads
changes in version 3:
- Add a flag to inform userspace application that driver
as take care of the flag.
changes in version 2:
- Clarify documentation.
- Only keep V4L2_FMT_FLAG_ALL_FORMATS flag in ioctl.
Benjamin
Benjamin Gaignard (2):
media: videodev2: Add flags to unconditionnaly enumerate pixels
formats
media: verisilicon: Use V4L2_FMT_FLAG_ENUM_ALL_FORMATS flag
.../media/v4l/dev-stateless-decoder.rst | 6 ++++++
.../userspace-api/media/v4l/vidioc-enum-fmt.rst | 10 ++++++++++
.../media/videodev2.h.rst.exceptions | 2 ++
drivers/media/platform/verisilicon/hantro_v4l2.c | 16 +++++++++++++---
drivers/media/v4l2-core/v4l2-ioctl.c | 3 +++
include/uapi/linux/videodev2.h | 2 ++
6 files changed, 36 insertions(+), 3 deletions(-)
--
2.43.0
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next reply other threads:[~2024-07-09 16:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-09 16:17 Benjamin Gaignard [this message]
2024-07-09 16:17 ` [PATCH v3 1/2] media: videodev2: Add flags to unconditionnaly enumerate pixels formats Benjamin Gaignard
2024-07-10 12:40 ` Sebastian Fricke
2024-07-10 12:55 ` Sebastian Fricke
2024-07-09 16:17 ` [PATCH v3 2/2] media: verisilicon: Use V4L2_FMT_FLAG_ENUM_ALL_FORMATS flag Benjamin Gaignard
-- strict thread matches above, loose matches on Subject: below --
2024-07-12 10:29 [PATCH v3 0/2] Enumerate all pixels formats Benjamin Gaignard
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