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SubjectRe: [PATCH 3/6] hantro: Rework how encoder and decoder are identified
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Hi Ezequiel,

On Thu, 2020-06-25 at 13:35 -0300, Ezequiel Garcia wrote:
> So far we've been using the .buf_finish hook to distinguish
> decoder from encoder. This is unnecessarily obfuscated.
>
> Moreover, we want to move the buf_finish, so use a cleaner
> scheme to distinguish the driver decoder/encoder type.
>
> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
> ---
> drivers/staging/media/hantro/hantro.h | 2 ++
> drivers/staging/media/hantro/hantro_drv.c | 4 +++-
> 2 files changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/staging/media/hantro/hantro.h b/drivers/staging/media/hantro/hantro.h
> index 3005207fc6fb..028b788ad50f 100644
> --- a/drivers/staging/media/hantro/hantro.h
> +++ b/drivers/staging/media/hantro/hantro.h
> @@ -199,6 +199,7 @@ struct hantro_dev {
> *
> * @dev: VPU driver data to which the context belongs.
> * @fh: V4L2 file handler.
> + * @is_encoder: Decoder or encoder context?
> *
> * @sequence_cap: Sequence counter for capture queue
> * @sequence_out: Sequence counter for output queue
> @@ -223,6 +224,7 @@ struct hantro_dev {
> struct hantro_ctx {
> struct hantro_dev *dev;
> struct v4l2_fh fh;
> + bool is_encoder;
>
> u32 sequence_cap;
> u32 sequence_out;
> diff --git a/drivers/staging/media/hantro/hantro_drv.c b/drivers/staging/media/hantro/hantro_drv.c
> index 0db8ad455160..112ed556eb90 100644
> --- a/drivers/staging/media/hantro/hantro_drv.c
> +++ b/drivers/staging/media/hantro/hantro_drv.c
> @@ -197,7 +197,7 @@ static void device_run(void *priv)
>
> bool hantro_is_encoder_ctx(const struct hantro_ctx *ctx)
> {
> - return ctx->buf_finish == hantro_enc_buf_finish;
> + return ctx->is_encoder;
> }

Now this function feels a little superfluous. Why not replace
hantro_is_encoder_ctx(ctx)
with
ctx->is_encoder
everywhere?

regards
Philipp

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