From a2254447b138af7fc0719e5a107816487255736b Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@herge.(none)>
Date: Thu, 8 Aug 2013 13:32:46 +0100
Subject: basic speed control for video_loader

---
 rotord/src/libavwrapper.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'rotord/src/libavwrapper.cpp')

diff --git a/rotord/src/libavwrapper.cpp b/rotord/src/libavwrapper.cpp
index 7c00b91..c21d077 100755
--- a/rotord/src/libavwrapper.cpp
+++ b/rotord/src/libavwrapper.cpp
@@ -223,6 +223,10 @@ bool libav::decoder::openUsingInitializedContainer(enum PixelFormat formatParam)
     if( pCtx->time_base.num > 1000 && pCtx->time_base.den == 1 )
         pCtx->time_base.den = 1000;
 
+    framerate=(((float)container->streams[videoStream]->r_frame_rate.num)/((float)container->streams[videoStream]->r_frame_rate.den));
+
+    //cerr<<"codecContext timebase: "<<(((float)pCtx->time_base.num)/((float)pCtx->time_base.den))<<" videostream framerate: "<<(((float)container->streams[videoStream]->r_frame_rate.num)/((float)container->streams[videoStream]->r_frame_rate.den))<<endl;
+
     //cerr<<"stream frame rate:"<<container->streams[videoStream]->r_frame_rate.num<<"/"<<container->streams[videoStream]->r_frame_rate.den<<endl;
 
     //cerr<<"video duration: "<<container->duration<<endl;
@@ -240,8 +244,7 @@ bool libav::decoder::openUsingInitializedContainer(enum PixelFormat formatParam)
 
     if (numFrames<1){
         //some codecs don't keep this info in the header
-         float fr=((float)container->streams[videoStream]->r_frame_rate.num)/container->streams[videoStream]->r_frame_rate.den;
-        numFrames = (int)(( container->duration / (double)AV_TIME_BASE ) * fr );
+        numFrames = (int)(( container->duration / (double)AV_TIME_BASE ) * framerate );
         //this approach still doesn't seem to give quite the right answer- comes out a little too big
         //could alternatively just redefine the length if the reader fails
     }
-- 
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