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List:       helix-datatype-cvs
Subject:    [Datatype-cvs] common/util riff.cpp,1.12.16.2.16.1,1.12.16.2.16.2
From:       sgarg () helixcommunity ! org
Date:       2010-01-29 5:12:59
Message-ID: 201001290514.o0T5EEn7031355 () mailer ! progressive-comp ! com
[Download RAW message or body]

Update of /cvsroot/datatype/common/util
In directory cvs01.internal.helixcommunity.org:/tmp/cvs-serv29110

Modified Files:
      Tag: hxclient_3_4_7_atlas
	riff.cpp 
Log Message:
Fix broken RealMedia file format due to RIFFReader

Index: riff.cpp
===================================================================
RCS file: /cvsroot/datatype/common/util/riff.cpp,v
retrieving revision 1.12.16.2.16.1
retrieving revision 1.12.16.2.16.2
diff -u -d -r1.12.16.2.16.1 -r1.12.16.2.16.2
--- riff.cpp	14 Jan 2010 04:07:52 -0000	1.12.16.2.16.1
+++ riff.cpp	29 Jan 2010 05:12:56 -0000	1.12.16.2.16.2
@@ -214,18 +214,30 @@
 
     HX_RELEASE(m_pFileStatObj);
     if ( !m_pFileObject )
-    return HXR_UNEXPECTED;
+    {
+        return HXR_UNEXPECTED;
+    }
 
-        HX_RESULT retVal = m_pFileObject->QueryInterface(IID_IHXFileStat, (void **) \
                &m_pFileStatObj);    
-    if(SUCCEEDED(retVal)  && (m_pFileStatObj->Stat((IHXFileStatResponse *) this) == \
                HXR_OK))
-        {
-        return status;
+    // QI for IHXFileStat
+    HX_RESULT retVal = m_pFileObject->QueryInterface(IID_IHXFileStat, (void **) \
&m_pFileStatObj);     +    if(SUCCEEDED(retVal))
+    {
+        // QI for IHXFileStat succeeded, so set the state
+        m_state = RS_StatDonePending;
+        // Do the Stat
+        retVal = m_pFileStatObj->Stat((IHXFileStatResponse *) this);
     }
     else
     {
-    m_state = RS_GetFileTypePending;
-    return m_pFileObject->Read(sizeof(UINT32) * 2);
-}
+        // QI for IHXFileStat failed, so skip the Stat and seek to 
+        // the beginning of the file. Set the state.
+        m_state = RS_InitialSeekDonePending;
+        // Set the desired seek offset
+        m_ulSeekOffset = 0;
+        // Seek the file to the beginning
+        retVal = m_pFileObject->Seek(m_ulSeekOffset, FALSE);
+    }
+    return retVal;
 }
 
 /////////////////////////////////////////////////////////////////////////
@@ -239,6 +251,11 @@
 				      UINT32 ulModificationTime,
 				      UINT32 ulMode)
 {
+    // Check the state
+    if (m_state != RS_StatDonePending)
+    {
+        return HXR_UNEXPECTED;
+    }
     // We're finished with the IHXFileStat interface, so we'll release it:
     HX_RELEASE(m_pFileStatObj);
 
@@ -248,8 +265,12 @@
         // actual duration for all streams using it.
         m_ulTotalFileSizeInBytes = ulSize;
     }
-    m_state = RS_GetFileTypePending;
-    return m_pFileObject->Read(sizeof(UINT32) * 2);	
+    // Now we need to seek the file to the beginning, so set the state
+    m_state = RS_InitialSeekDonePending;
+    // Set the desired seek offset
+    m_ulSeekOffset = 0;
+    // Seek the file to the beginning
+    return m_pFileObject->Seek(m_ulSeekOffset, FALSE);	
 }
 
 UINT32 CRIFFReader::GetTotalFileSize()
@@ -731,6 +752,15 @@
 
     switch ( m_state )
     {
+        case RS_InitialSeekDonePending:
+            // We have seeked the file object back to the beginning,
+            // so now we can read the first chunk header.
+            //
+            // Set the state
+            m_state = RS_GetFileTypePending;
+            // Read the first two UINT32's in the file
+            result = m_pFileObject->Read(sizeof(UINT32) * 2);
+            return (HXR_OK == status ? result : status);
         case RS_ChunkBodySeekPending:
             m_state = RS_ChunkHeaderReadPending;
             result = m_pFileObject->Read(sizeof(UINT32) + sizeof(UINT32));


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