From 15f14fc7c20914f388f85163ed3a27f80ff27301 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Sun, 10 Dec 2006 17:53:01 +0000
Subject: move duration finding code into read_packet() so it can be skiped if
 duration has already been set

Originally committed as revision 7272 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavformat/flvdec.c | 27 +++++++++++++++------------
 1 file changed, 15 insertions(+), 12 deletions(-)

(limited to 'libavformat/flvdec.c')

diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c
index c49fe8eae7..2906b1d4ec 100644
--- a/libavformat/flvdec.c
+++ b/libavformat/flvdec.c
@@ -57,7 +57,7 @@ static int amf_get_string(ByteIOContext *ioc, char *buffer, int buffsize) {
 static int flv_read_header(AVFormatContext *s,
                            AVFormatParameters *ap)
 {
-    int offset, flags, size;
+    int offset, flags;
     AVStream *st;
 
     url_fskip(&s->pb, 4);
@@ -79,17 +79,6 @@ static int flv_read_header(AVFormatContext *s,
     }
 
     offset = get_be32(&s->pb);
-
-    if(!url_is_streamed(&s->pb)){
-        const int fsize= url_fsize(&s->pb);
-        url_fseek(&s->pb, fsize-4, SEEK_SET);
-        size= get_be32(&s->pb);
-        url_fseek(&s->pb, fsize-3-size, SEEK_SET);
-        if(size == get_be24(&s->pb) + 11){
-            s->duration= get_be24(&s->pb) * (int64_t)AV_TIME_BASE / 1000;
-        }
-    }
-
     url_fseek(&s->pb, offset, SEEK_SET);
 
     s->start_time = 0;
@@ -190,6 +179,20 @@ static int flv_read_packet(AVFormatContext *s, AVPacket *pkt)
     break;
  }
 
+    // if not streamed and no duration from metadata then seek to end to find the duration from the timestamps
+    if(!url_is_streamed(&s->pb) && s->duration==AV_NOPTS_VALUE){
+        int size;
+        const int pos= url_ftell(&s->pb);
+        const int fsize= url_fsize(&s->pb);
+        url_fseek(&s->pb, fsize-4, SEEK_SET);
+        size= get_be32(&s->pb);
+        url_fseek(&s->pb, fsize-3-size, SEEK_SET);
+        if(size == get_be24(&s->pb) + 11){
+            s->duration= get_be24(&s->pb) * (int64_t)AV_TIME_BASE / 1000;
+        }
+        url_fseek(&s->pb, pos, SEEK_SET);
+    }
+
     if(is_audio){
         if(st->codec->sample_rate == 0){
             st->codec->channels = (flags & FLV_AUDIO_CHANNEL_MASK) == FLV_STEREO ? 2 : 1;
-- 
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