[PATCH v5 2/3] media: test-drivers: Use V4L2_FMT_FLAG_ENUM_ALL flag
Sebastian Fricke
sebastian.fricke at collabora.com
Tue Jul 23 02:49:13 PDT 2024
Hey Benjamin,
On 22.07.2024 17:05, Benjamin Gaignard wrote:
>Since V4L2_FMT_FLAG_ENUM_ALL flag mostly targeting stateless
s/Since/Since the/
s/targeting/targets/
>decoder pixel formats enumeration, update vicodec visl test
s/pixel formats/pixel-format/
>drivers to use it.
s/drivers/driver/
The rest below basically just strips the flag from every use-case of the
index, before using it.
I wonder couldn't we implement a macro for this, as I believe this will
have to be done in a lot of places, something like:
/*
* Drivers can support an enumeration of all formats, by ORing the
* V4L2_FMT_FLAG_ENUM_ALL flag into the index field.
* In order to use the index field, strip the flag first.
*
* See vidioc-enum-fmt.rst documentation for more details.
*/
#define STRIP_ENUM_ALL_FLAG(index) \
index & ~V4L2_FMT_FLAG_ENUM_ALL
And then use it like this:
u32 index = STRIP_ENUM_ALL_FLAG(f->index);
If we define this in a common header, then every driver can easily
utilize it and you have built-in documentation.
What do you think?
Regards,
Sebastian
>
>Signed-off-by: Benjamin Gaignard <benjamin.gaignard at collabora.com>
>---
> drivers/media/test-drivers/vicodec/vicodec-core.c | 7 ++++---
> drivers/media/test-drivers/visl/visl-video.c | 11 +++++++----
> 2 files changed, 11 insertions(+), 7 deletions(-)
>
>diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
>index 3e011fe62ae1..1b4cd8ddd7c2 100644
>--- a/drivers/media/test-drivers/vicodec/vicodec-core.c
>+++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
>@@ -706,6 +706,7 @@ static int enum_fmt(struct v4l2_fmtdesc *f, struct vicodec_ctx *ctx,
> bool is_out)
> {
> bool is_uncomp = (ctx->is_enc && is_out) || (!ctx->is_enc && !is_out);
>+ u32 index = f->index & ~V4L2_FMT_FLAG_ENUM_ALL;
>
> if (V4L2_TYPE_IS_MULTIPLANAR(f->type) && !multiplanar)
> return -EINVAL;
>@@ -718,18 +719,18 @@ static int enum_fmt(struct v4l2_fmtdesc *f, struct vicodec_ctx *ctx,
>
> if (ctx->is_enc ||
> !vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q))
>- info = v4l2_fwht_get_pixfmt(f->index);
>+ info = v4l2_fwht_get_pixfmt(index);
> else
> info = v4l2_fwht_find_nth_fmt(info->width_div,
> info->height_div,
> info->components_num,
> info->pixenc,
>- f->index);
>+ index);
> if (!info)
> return -EINVAL;
> f->pixelformat = info->id;
> } else {
>- if (f->index)
>+ if (index)
> return -EINVAL;
> f->pixelformat = ctx->is_stateless ?
> V4L2_PIX_FMT_FWHT_STATELESS : V4L2_PIX_FMT_FWHT;
>diff --git a/drivers/media/test-drivers/visl/visl-video.c b/drivers/media/test-drivers/visl/visl-video.c
>index f8d970319764..c5f3e13b4198 100644
>--- a/drivers/media/test-drivers/visl/visl-video.c
>+++ b/drivers/media/test-drivers/visl/visl-video.c
>@@ -341,21 +341,24 @@ static int visl_enum_fmt_vid_cap(struct file *file, void *priv,
> struct v4l2_fmtdesc *f)
> {
> struct visl_ctx *ctx = visl_file_to_ctx(file);
>+ u32 index = f->index & ~V4L2_FMT_FLAG_ENUM_ALL;
>
>- if (f->index >= ctx->coded_format_desc->num_decoded_fmts)
>+ if (index >= ctx->coded_format_desc->num_decoded_fmts)
> return -EINVAL;
>
>- f->pixelformat = ctx->coded_format_desc->decoded_fmts[f->index];
>+ f->pixelformat = ctx->coded_format_desc->decoded_fmts[index];
> return 0;
> }
>
> static int visl_enum_fmt_vid_out(struct file *file, void *priv,
> struct v4l2_fmtdesc *f)
> {
>- if (f->index >= ARRAY_SIZE(visl_coded_fmts))
>+ u32 index = f->index & ~V4L2_FMT_FLAG_ENUM_ALL;
>+
>+ if (index >= ARRAY_SIZE(visl_coded_fmts))
> return -EINVAL;
>
>- f->pixelformat = visl_coded_fmts[f->index].pixelformat;
>+ f->pixelformat = visl_coded_fmts[index].pixelformat;
> return 0;
> }
>
>--
>2.43.0
>
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