From: jintao xu <jintao.xu@amlogic.com>
Date: Fri, 10 May 2019 11:47:36 +0000 (+0800)
Subject: pipvideo: add frame drop mechanism [1/1]
X-Git-Tag: khadas-vims-v0.9.6-release~442
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2c23656bc957989f78c6f3f2e9a46bb3222fc1a1;p=platform%2Fkernel%2Flinux-amlogic.git

pipvideo: add frame drop mechanism [1/1]

PD#OTT-3616

Problem:
when HDMI output is 30HZ, video is 60fps, pipvideo only can display 30fps,
need drop 30fps.

Solution:
drop frames when there is no time to display

Verify:
U212

Change-Id: I3c946aa49ccc40b8e69e6e7c5031df0b5af34454
Signed-off-by: jintao xu <jintao.xu@amlogic.com>
---

diff --git a/drivers/amlogic/media/video_processor/videosync/videosync.c b/drivers/amlogic/media/video_processor/videosync/videosync.c
index 23b6d0b..f2eb0fe 100644
--- a/drivers/amlogic/media/video_processor/videosync/videosync.c
+++ b/drivers/amlogic/media/video_processor/videosync/videosync.c
@@ -1002,10 +1002,16 @@ static int videosync_receiver_event_fun(int type, void *data,
 		videosync_buffer_states(&states, dev_s);
 		if (states.buf_queued_num + states.buf_ready_num > 0)
 			return RECEIVER_ACTIVE;
-
-		vp_print(dev_s->vf_receiver_name, 0,
+		else {
+			vp_print(dev_s->vf_receiver_name, 0,
 				"buf queue empty!!\n");
-		return RECEIVER_ACTIVE;/*return RECEIVER_INACTIVE;*/
+			if (vf_notify_receiver(
+				dev_s->vf_provider_name,
+				VFRAME_EVENT_PROVIDER_QUREY_STATE,
+				NULL) == RECEIVER_ACTIVE)
+				return RECEIVER_ACTIVE;
+			return RECEIVER_INACTIVE;
+		}
 	}
 	return 0;
 }
diff --git a/drivers/amlogic/media/video_sink/video.c b/drivers/amlogic/media/video_sink/video.c
index dbc6117..0b9dff3 100644
--- a/drivers/amlogic/media/video_sink/video.c
+++ b/drivers/amlogic/media/video_sink/video.c
@@ -6787,10 +6787,12 @@ static irqreturn_t vsync_isr_in(int irq, void *dev_id)
 SET_FILTER:
 #ifdef VIDEO_PIP
 	vf = pip_vf_peek();
+
 	/* setting video display property in underflow mode */
 	if ((!vf) && cur_pipbuf && (pip_property_changed))
 		pip_toggle_frame(cur_pipbuf);
-	if (vf) {
+
+	while (vf) {
 		vf = pip_vf_get();
 		if (vf) {
 			if (!vf->frame_dirty)
@@ -6798,6 +6800,7 @@ SET_FILTER:
 			else
 				pip_vf_put(vf);
 		}
+		vf = pip_vf_peek();
 	}
 #endif
 #if defined(CONFIG_AMLOGIC_MEDIA_ENHANCEMENT_VECM)