[PATCH RFC 2/2] media: amphion: Add V4L2_FMT_FLAG_DYN_RESOLUTION for VC1L

[Ming Qian]

The amphion VPU decoder always emits an initial V4L2_EVENT_SOURCE_CHANGE
event after parsing the resolution from the stream header for VC1 Annex
L format. Without V4L2_FMT_FLAG_DYN_RESOLUTION, userspace (e.g.
GStreamer) cannot determine that the driver will signal the initial
resolution, causing it to skip waiting for the event and fail to set up
the CAPTURE queue properly.

Add V4L2_FMT_FLAG_DYN_RESOLUTION to the VC1 Annex L format entry to
indicate that the decoder will emit the source change event during
initialization, consistent with other coded formats supported by this
driver.

Fixes: e670f5d672ef ("media: amphion: only insert the first sequence startcode for vc1l format")
Signed-off-by: Ming Qian <ming.qian@xxxxxxxxxxx>
---
 drivers/media/platform/amphion/vdec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/amphion/vdec.c b/drivers/media/platform/amphion/vdec.c
index a9f0521f2e1a..75808482d090 100644
--- a/drivers/media/platform/amphion/vdec.c
+++ b/drivers/media/platform/amphion/vdec.c
@@ -136,7 +136,7 @@ static const struct vpu_format vdec_formats[] = {
 		.mem_planes = 1,
 		.comp_planes = 1,
 		.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
-		.flags = V4L2_FMT_FLAG_COMPRESSED
+		.flags = V4L2_FMT_FLAG_DYN_RESOLUTION | V4L2_FMT_FLAG_COMPRESSED
 	},
 	{
 		.pixfmt = V4L2_PIX_FMT_MPEG2,

-- 
2.54.0