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media: coda: implement decoder source change event 

The stateful decoder API requires decoders to signal detection
of stream dimensions via the V4L2_EVENT_SOURCE_CHANGE event.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Philipp Zabel 2019-06-18 12:45:16 -04:00 committed by Mauro Carvalho Chehab
parent 497e6b8559
commit 236306be0b
1 changed files with 20 additions and 0 deletions
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20
drivers/media/platform/coda/coda-common.c
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@ -1255,9 +1255,16 @@ static int coda_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
static int coda_subscribe_event(struct v4l2_fh *fh,
const struct v4l2_event_subscription *sub)
{
struct coda_ctx *ctx = fh_to_ctx(fh);
switch (sub->type) {
case V4L2_EVENT_EOS:
return v4l2_event_subscribe(fh, sub, 0, NULL);
case V4L2_EVENT_SOURCE_CHANGE:
if (ctx->inst_type == CODA_INST_DECODER)
return v4l2_event_subscribe(fh, sub, 0, NULL);
else
return -EINVAL;
default:
return v4l2_ctrl_subscribe_event(fh, sub);
}
@ -1642,6 +1649,16 @@ void coda_update_profile_level_ctrls(struct coda_ctx *ctx, u8 profile_idc,
}
}
static void coda_queue_source_change_event(struct coda_ctx *ctx)
{
static const struct v4l2_event source_change_event = {
.type = V4L2_EVENT_SOURCE_CHANGE,
.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
};
v4l2_event_queue_fh(&ctx->fh, &source_change_event);
}
static void coda_buf_queue(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
@ -1696,6 +1713,9 @@ static void coda_buf_queue(struct vb2_buffer *vb)
&ctx->seq_init_work);
flush_work(&ctx->seq_init_work);
}
if (ctx->initialized)
coda_queue_source_change_event(ctx);
}
} else {
if (ctx->inst_type == CODA_INST_ENCODER &&