[PATCH 5/8] media: cedrus: Detect first slice of a frame

Jernej Skrabec jernej.skrabec at siol.net
Thu Aug 22 19:44:57 UTC 2019


When codec supports multiple slices in one frame, VPU has to know when
first slice of each frame is being processed, presumably to correctly
clear/set data in auxiliary buffers.

Add first_slice field to cedrus_run structure and set it according to
timestamps of capture and output buffers. If timestamps are different,
it's first slice and viceversa.

Signed-off-by: Jernej Skrabec <jernej.skrabec at siol.net>
---
 drivers/staging/media/sunxi/cedrus/cedrus.h     | 1 +
 drivers/staging/media/sunxi/cedrus/cedrus_dec.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.h b/drivers/staging/media/sunxi/cedrus/cedrus.h
index 2f017a651848..32cb38e541c6 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus.h
+++ b/drivers/staging/media/sunxi/cedrus/cedrus.h
@@ -70,6 +70,7 @@ struct cedrus_mpeg2_run {
 struct cedrus_run {
 	struct vb2_v4l2_buffer	*src;
 	struct vb2_v4l2_buffer	*dst;
+	bool first_slice;
 
 	union {
 		struct cedrus_h264_run	h264;
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_dec.c b/drivers/staging/media/sunxi/cedrus/cedrus_dec.c
index 56ca4c9ad01c..d7b54accfe83 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_dec.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_dec.c
@@ -31,6 +31,8 @@ void cedrus_device_run(void *priv)
 
 	run.src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 	run.dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+	run.first_slice =
+		run.src->vb2_buf.timestamp != run.dst->vb2_buf.timestamp;
 
 	/* Apply request(s) controls if needed. */
 	src_req = run.src->vb2_buf.req_obj.req;
-- 
2.22.1



More information about the devel mailing list