[PATCH v1 15/24] media: rkvdec: Enable capture buffer holding for H264

Nicolas Dufresne
2022-03-28T20:00:52Z

In order to support interlaced video decoding, the driver must
allow holding the capture buffer so that the second field can
be decoded into it.

Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
---
drivers/staging/media/rkvdec/rkvdec.c | 4 ++++
drivers/staging/media/rkvdec/rkvdec.h | 1 +
2 files changed, 5 insertions(+)

diff --git a/drivers/staging/media/rkvdec/rkvdec.c b/drivers/staging/media/rkvdec/rkvdec.c
index 2df8cf4883e2..05824f1997f7 100644
--- a/drivers/staging/media/rkvdec/rkvdec.c
+++ b/drivers/staging/media/rkvdec/rkvdec.c
@@ -138,6 +138,7 @@ static const struct rkvdec_coded_fmt_desc rkvdec_coded_fmts[] = {
.ops = &rkvdec_h264_fmt_ops,
.num_decoded_fmts = ARRAY_SIZE(rkvdec_h264_vp9_decoded_fmts),
.decoded_fmts = rkvdec_h264_vp9_decoded_fmts,
+ .subsystem_flags = VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF,
},
{
.fourcc = V4L2_PIX_FMT_VP9_FRAME,
@@ -394,6 +395,9 @@ static int rkvdec_s_output_fmt(struct file *file, void *priv,
cap_fmt->fmt.pix_mp.ycbcr_enc = f->fmt.pix_mp.ycbcr_enc;
cap_fmt->fmt.pix_mp.quantization = f->fmt.pix_mp.quantization;

+ /* Enable format specific queue feature */
+ vq->subsystem_flags |= desc->subsystem_flags;
+
return 0;
}

diff --git a/drivers/staging/media/rkvdec/rkvdec.h b/drivers/staging/media/rkvdec/rkvdec.h
index 2f4ea1786b93..e37f1a015fa0 100644
--- a/drivers/staging/media/rkvdec/rkvdec.h
+++ b/drivers/staging/media/rkvdec/rkvdec.h
@@ -81,6 +81,7 @@ struct rkvdec_coded_fmt_desc {
const struct rkvdec_coded_fmt_ops *ops;
unsigned int num_decoded_fmts;
const u32 *decoded_fmts;
+ u32 subsystem_flags;
};

struct rkvdec_dev {
--
2.34.1