From f7401faa595d8cd70392c73ce9578ed1e83ed81b Mon Sep 17 00:00:00 2001
From: "arvin.zhu" <arvin.zhu@starfivetech.com>
Date: Thu, 22 Sep 2022 19:06:50 +0800
Subject: [PATCH] ffmpeg: add delay for decoding

add delay for decoding

Signed-off-by: arvin.zhu <arvin.zhu@starfivetech.com>
---
 libavcodec/omxdec.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
 mode change 100644 => 100755 libavcodec/omxdec.c

diff --git a/libavcodec/omxdec.c b/libavcodec/omxdec.c
old mode 100644
new mode 100755
index 32f39f3..03a2bca
--- a/libavcodec/omxdec.c
+++ b/libavcodec/omxdec.c
@@ -262,7 +262,7 @@ typedef struct OMXCodecContext {
 
     int mutex_cond_inited;
 
-    int eos_sent, got_eos, evnet_bufferflag;
+    int eos_sent, got_eos, evnet_bufferflag, first_get_outbuffer;
 
 	int extradata_sent;
 
@@ -792,6 +792,9 @@ static int omx_decode_frame(AVCodecContext *avctx, void *data,
 
     if (pkt->size) {
 	
+        //VPU init and fill buffer slow, so empty buf sleep to send before get vpu fill buf.
+        if(!s->first_get_outbuffer)
+        av_usleep(100000);
         buffer = get_buffer(&s->input_mutex, &s->input_cond,
                             &s->num_free_in_buffers, s->free_in_buffers, 1);
 
@@ -831,6 +834,8 @@ static int omx_decode_frame(AVCodecContext *avctx, void *data,
 	    }
     } else if (!s->eos_sent) {
 		
+        if(!s->first_get_outbuffer)
+        av_usleep(1000000);
         buffer = get_buffer(&s->input_mutex, &s->input_cond,
                             &s->num_free_in_buffers, s->free_in_buffers, 1);
 
@@ -871,6 +876,8 @@ static int omx_decode_frame(AVCodecContext *avctx, void *data,
         }
 		//if (!buffer)
            // break;
+        if(!s->first_get_outbuffer)
+            s->first_get_outbuffer = 1;
 
 		if(!buffer->nFilledLen){
             av_log(avctx, AV_LOG_ERROR, "buffer->nFilledLen %d\n",(int)buffer->nFilledLen);
-- 
2.17.1

