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media: cedrus: Adjust buffer size based on codec

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In some cases decoding engine needs extra space in capture buffers. This
is the case for decoding 10-bit HEVC frames into 8-bit capture format.
This commit only adds infrastructure for such cases.

Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Jernej Skrabec 2022-11-09 18:23:07 +00:00 committed by Mauro Carvalho Chehab
parent a7fa915634
commit 3d273e81f9
2 changed files with 6 additions and 0 deletions
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2
drivers/staging/media/sunxi/cedrus/cedrus.h
View File

@ -162,6 +162,8 @@ struct cedrus_dec_ops {
int (*start)(struct cedrus_ctx *ctx);
void (*stop)(struct cedrus_ctx *ctx);
void (*trigger)(struct cedrus_ctx *ctx);
unsigned int (*extra_cap_size)(struct cedrus_ctx *ctx,
struct v4l2_pix_format *pix_fmt);
};
struct cedrus_variant {

4
drivers/staging/media/sunxi/cedrus/cedrus_video.c
View File

@ -250,6 +250,10 @@ static int cedrus_try_fmt_vid_cap_p(struct cedrus_ctx *ctx,
pix_fmt->height = ctx->src_fmt.height;
cedrus_prepare_format(pix_fmt);
if (ctx->current_codec->extra_cap_size)
pix_fmt->sizeimage +=
ctx->current_codec->extra_cap_size(ctx, pix_fmt);
return 0;
}