From c59bbe7c22103699bf77d6ffd20dbb78c48969cd Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Wed, 11 Jan 2012 00:32:16 -0800
Subject: Handle a couple of special AVSEEK_ seek modes

---
 examples/alffmpeg.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/examples/alffmpeg.c b/examples/alffmpeg.c
index 424a07a6..d4d70527 100644
--- a/examples/alffmpeg.c
+++ b/examples/alffmpeg.c
@@ -94,6 +94,7 @@ static int64_t MemData_seek(void *opaque, int64_t offset, int whence)
 {
     struct MemData *membuf = (struct MemData*)opaque;
 
+    whence &= ~AVSEEK_FORCE;
     switch(whence)
     {
         case SEEK_SET:
@@ -115,6 +116,9 @@ static int64_t MemData_seek(void *opaque, int64_t offset, int whence)
             membuf->pos = membuf->length + offset;
             break;
 
+        case AVSEEK_SIZE:
+            return membuf->length;
+
         default:
             return -1;
     }
-- 
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