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Message-ID: <59ffa319a35e9e914bb5c8169df782ddabbd68c3.camel@collabora.com>
Date: Fri, 25 Oct 2024 13:36:27 -0400
From: Nicolas Dufresne <nicolas.dufresne@...labora.com>
To: Jonas Karlman <jonas@...boo.se>, Sebastian Fricke
<sebastian.fricke@...labora.com>, Ezequiel Garcia
<ezequiel@...guardiasur.com.ar>, Mauro Carvalho Chehab
<mchehab@...nel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Alex Bee <knaerzche@...il.com>, Benjamin Gaignard
<benjamin.gaignard@...labora.com>, Detlev Casanova
<detlev.casanova@...labora.com>, Dan Carpenter <dan.carpenter@...aro.org>,
linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org, Christopher
Obbard <chris.obbard@...labora.com>
Subject: Re: [PATCH v6 08/11] media: rkvdec: Add image format concept
Le lundi 09 septembre 2024 à 19:25 +0000, Jonas Karlman a écrit :
> Add an enum rkvdec_image_fmt used to signal an image format, e.g.
> 4:2:0 8-bit, 4:2:0 10-bit or any.
>
> Tag each supported CAPUTRE format with an image format and use this tag
> to filter out unsupported CAPTURE formats.
>
> Signed-off-by: Jonas Karlman <jonas@...boo.se>
> Tested-by: Nicolas Dufresne <nicolas.dufresne@...labora.com>
> Tested-by: Christopher Obbard <chris.obbard@...labora.com>
> ---
> v6:
> - Change to use fmt_idx instead of j++ tucked inside a condition (Dan)
>
> v5:
> - Collect t-b tags
>
> v4:
> - Change fmt_opaque into an image format
> - Split patch into two
>
> v3:
> - New patch
> ---
> drivers/staging/media/rkvdec/rkvdec.c | 48 ++++++++++++++++++++-------
> drivers/staging/media/rkvdec/rkvdec.h | 13 +++++++-
> 2 files changed, 48 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/staging/media/rkvdec/rkvdec.c b/drivers/staging/media/rkvdec/rkvdec.c
> index efbf9aa578ae..467fc05b347a 100644
> --- a/drivers/staging/media/rkvdec/rkvdec.c
> +++ b/drivers/staging/media/rkvdec/rkvdec.c
> @@ -27,26 +27,45 @@
> #include "rkvdec.h"
> #include "rkvdec-regs.h"
>
> -static u32 rkvdec_enum_decoded_fmt(struct rkvdec_ctx *ctx, int index)
> +static inline bool rkvdec_image_fmt_match(enum rkvdec_image_fmt fmt1,
> + enum rkvdec_image_fmt fmt2)
nit: We usually let the compiler inline function, specially when small and
static.
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@...labora.com>
> +{
> + return fmt1 == fmt2 || fmt2 == RKVDEC_IMG_FMT_ANY ||
> + fmt1 == RKVDEC_IMG_FMT_ANY;
> +}
> +
> +static u32 rkvdec_enum_decoded_fmt(struct rkvdec_ctx *ctx, int index,
> + enum rkvdec_image_fmt image_fmt)
> {
> const struct rkvdec_coded_fmt_desc *desc = ctx->coded_fmt_desc;
> + int fmt_idx = -1;
> + unsigned int i;
>
> if (WARN_ON(!desc))
> return 0;
>
> - if (index >= desc->num_decoded_fmts)
> - return 0;
> + for (i = 0; i < desc->num_decoded_fmts; i++) {
> + if (!rkvdec_image_fmt_match(desc->decoded_fmts[i].image_fmt,
> + image_fmt))
> + continue;
> + fmt_idx++;
> + if (index == fmt_idx)
> + return desc->decoded_fmts[i].fourcc;
> + }
>
> - return desc->decoded_fmts[index];
> + return 0;
> }
>
> -static bool rkvdec_is_valid_fmt(struct rkvdec_ctx *ctx, u32 fourcc)
> +static bool rkvdec_is_valid_fmt(struct rkvdec_ctx *ctx, u32 fourcc,
> + enum rkvdec_image_fmt image_fmt)
> {
> const struct rkvdec_coded_fmt_desc *desc = ctx->coded_fmt_desc;
> unsigned int i;
>
> for (i = 0; i < desc->num_decoded_fmts; i++) {
> - if (desc->decoded_fmts[i] == fourcc)
> + if (rkvdec_image_fmt_match(desc->decoded_fmts[i].image_fmt,
> + image_fmt) &&
> + desc->decoded_fmts[i].fourcc == fourcc)
> return true;
> }
>
> @@ -80,7 +99,7 @@ static void rkvdec_reset_decoded_fmt(struct rkvdec_ctx *ctx)
> struct v4l2_format *f = &ctx->decoded_fmt;
> u32 fourcc;
>
> - fourcc = rkvdec_enum_decoded_fmt(ctx, 0);
> + fourcc = rkvdec_enum_decoded_fmt(ctx, 0, ctx->image_fmt);
> rkvdec_reset_fmt(ctx, f, fourcc);
> f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> f->fmt.pix_mp.width = ctx->coded_fmt.fmt.pix_mp.width;
> @@ -149,8 +168,11 @@ static const struct rkvdec_ctrls rkvdec_h264_ctrls = {
> .num_ctrls = ARRAY_SIZE(rkvdec_h264_ctrl_descs),
> };
>
> -static const u32 rkvdec_h264_vp9_decoded_fmts[] = {
> - V4L2_PIX_FMT_NV12,
> +static const struct rkvdec_decoded_fmt_desc rkvdec_h264_vp9_decoded_fmts[] = {
> + {
> + .fourcc = V4L2_PIX_FMT_NV12,
> + .image_fmt = RKVDEC_IMG_FMT_420_8BIT,
> + },
> };
>
> static const struct rkvdec_ctrl_desc rkvdec_vp9_ctrl_descs[] = {
> @@ -282,8 +304,9 @@ static int rkvdec_try_capture_fmt(struct file *file, void *priv,
> if (WARN_ON(!coded_desc))
> return -EINVAL;
>
> - if (!rkvdec_is_valid_fmt(ctx, pix_mp->pixelformat))
> - pix_mp->pixelformat = rkvdec_enum_decoded_fmt(ctx, 0);
> + if (!rkvdec_is_valid_fmt(ctx, pix_mp->pixelformat, ctx->image_fmt))
> + pix_mp->pixelformat = rkvdec_enum_decoded_fmt(ctx, 0,
> + ctx->image_fmt);
>
> /* Always apply the frmsize constraint of the coded end. */
> pix_mp->width = max(pix_mp->width, ctx->coded_fmt.fmt.pix_mp.width);
> @@ -400,6 +423,7 @@ static int rkvdec_s_output_fmt(struct file *file, void *priv,
> *
> * Note that this will propagates any size changes to the decoded format.
> */
> + ctx->image_fmt = RKVDEC_IMG_FMT_ANY;
> rkvdec_reset_decoded_fmt(ctx);
>
> /* Propagate colorspace information to capture. */
> @@ -449,7 +473,7 @@ static int rkvdec_enum_capture_fmt(struct file *file, void *priv,
> struct rkvdec_ctx *ctx = fh_to_rkvdec_ctx(priv);
> u32 fourcc;
>
> - fourcc = rkvdec_enum_decoded_fmt(ctx, f->index);
> + fourcc = rkvdec_enum_decoded_fmt(ctx, f->index, ctx->image_fmt);
> if (!fourcc)
> return -EINVAL;
>
> diff --git a/drivers/staging/media/rkvdec/rkvdec.h b/drivers/staging/media/rkvdec/rkvdec.h
> index 633335ebb9c4..6f8cf50c5d99 100644
> --- a/drivers/staging/media/rkvdec/rkvdec.h
> +++ b/drivers/staging/media/rkvdec/rkvdec.h
> @@ -75,13 +75,23 @@ struct rkvdec_coded_fmt_ops {
> int (*try_ctrl)(struct rkvdec_ctx *ctx, struct v4l2_ctrl *ctrl);
> };
>
> +enum rkvdec_image_fmt {
> + RKVDEC_IMG_FMT_ANY = 0,
> + RKVDEC_IMG_FMT_420_8BIT,
> +};
> +
> +struct rkvdec_decoded_fmt_desc {
> + u32 fourcc;
> + enum rkvdec_image_fmt image_fmt;
> +};
> +
> struct rkvdec_coded_fmt_desc {
> u32 fourcc;
> struct v4l2_frmsize_stepwise frmsize;
> const struct rkvdec_ctrls *ctrls;
> const struct rkvdec_coded_fmt_ops *ops;
> unsigned int num_decoded_fmts;
> - const u32 *decoded_fmts;
> + const struct rkvdec_decoded_fmt_desc *decoded_fmts;
> u32 subsystem_flags;
> };
>
> @@ -104,6 +114,7 @@ struct rkvdec_ctx {
> const struct rkvdec_coded_fmt_desc *coded_fmt_desc;
> struct v4l2_ctrl_handler ctrl_hdl;
> struct rkvdec_dev *dev;
> + enum rkvdec_image_fmt image_fmt;
> void *priv;
> };
>
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