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[media] s5p-mfc: Add support for resolution change event

Browse source 
When a resolution change point is reached, queue an event to signal the
userspace that a new set of buffers is required before decoding can
continue.

Signed-off-by: Pawel Osciak <posciak@chromium.org>
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Pawel Osciak 2014-05-14 03:59:43 -03:00 committed by Mauro Carvalho Chehab
parent 3cbe6e5bca
commit 0520e4cc3b
2 changed files with 10 additions and 0 deletions
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8
drivers/media/platform/s5p-mfc/s5p_mfc.c
View file

@ -342,8 +342,16 @@ static void s5p_mfc_handle_frame(struct s5p_mfc_ctx *ctx,
/* All frames remaining in the buffer have been extracted */
if (dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_EMPTY) {
if (ctx->state == MFCINST_RES_CHANGE_FLUSH) {
static const struct v4l2_event ev_src_ch = {
.type = V4L2_EVENT_SOURCE_CHANGE,
.u.src_change.changes =
V4L2_EVENT_SRC_CH_RESOLUTION,
};
s5p_mfc_handle_frame_all_extracted(ctx);
ctx->state = MFCINST_RES_CHANGE_END;
v4l2_event_queue_fh(&ctx->fh, &ev_src_ch);
goto leave_handle_frame;
} else {
s5p_mfc_handle_frame_all_extracted(ctx);

2
drivers/media/platform/s5p-mfc/s5p_mfc_dec.c
View file

@ -867,6 +867,8 @@ static int vidioc_subscribe_event(struct v4l2_fh *fh,
switch (sub->type) {
case V4L2_EVENT_EOS:
return v4l2_event_subscribe(fh, sub, 2, NULL);
case V4L2_EVENT_SOURCE_CHANGE:
return v4l2_src_change_event_subscribe(fh, sub);
default:
return -EINVAL;
}