Windows: Fix RTSP stream playback

Avoids changing the player topology for remote streams. Also improves
handling of error conditions related to network streaming.

Task-number: QTBUG-103567
Change-Id: I358389ed22397c3b15e5971a042e43dc369127f4
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
(cherry picked from commit 196ea281d1843cfe62541001619a8517506af773)

2 files changed, 29 insertions, 3 deletions

diff --git a/src/multimedia/platform/windows/common/qwindowsmfdefs_p.h b/src/multimedia/platform/windows/common/qwindowsmfdefs_p.h
index 173c8f8f0..ddd8c2fac 100644
--- a/src/multimedia/platform/windows/common/qwindowsmfdefs_p.h
+++ b/src/multimedia/platform/windows/common/qwindowsmfdefs_p.h
@@ -82,6 +82,7 @@ extern "C" HRESULT WINAPI MFCreateDeviceSource(IMFAttributes *pAttributes, IMFMe
 
 #define QMM_MFSESSION_GETFULLTOPOLOGY_CURRENT 1
 #define QMM_PRESENTATION_CURRENT_POSITION 0x7fffffffffffffff
+#define QMM_WININET_E_CANNOT_CONNECT ((HRESULT)0x80072EFDL)
 
 #ifndef __IMFVideoProcessor_INTERFACE_DEFINED__
 #define __IMFVideoProcessor_INTERFACE_DEFINED__
diff --git a/src/multimedia/platform/windows/player/mfplayersession.cpp b/src/multimedia/platform/windows/player/mfplayersession.cpp
index f01d5344d..7507af928 100644
--- a/src/multimedia/platform/windows/player/mfplayersession.cpp
+++ b/src/multimedia/platform/windows/player/mfplayersession.cpp
@@ -59,6 +59,7 @@
 #include "mfplayersession_p.h"
 #include <mferror.h>
 #include <nserror.h>
+#include <winerror.h>
 #include "private/sourceresolver_p.h"
 #include "samplegrabber_p.h"
 #include "mftvideo_p.h"
@@ -215,7 +216,8 @@ void MFPlayerSession::load(const QUrl &url, QIODevice *stream)
     } else if (createSession()) {
         changeStatus(QMediaPlayer::LoadingMedia);
         m_sourceResolver->load(url, stream);
-        m_updateRoutingOnStart = true;
+        if (url.isLocalFile())
+            m_updateRoutingOnStart = true;
     }
     positionChanged(position());
 }
@@ -239,7 +241,13 @@ void MFPlayerSession::handleSourceError(long hr)
         errorCode = QMediaPlayer::FormatError;
         errorString = tr("Unsupported media type.");
         break;
+    case QMM_WININET_E_CANNOT_CONNECT:
+        errorCode = QMediaPlayer::NetworkError;
+        errorString = tr("A connection with the server could not be established.");
+        break;
     default:
+        qWarning() << "handleSourceError:"
+                   << Qt::showbase << Qt::hex << Qt::uppercasedigits << static_cast<quint32>(hr);
         errorString = tr("Failed to load source.");
         break;
     }
@@ -1667,8 +1675,25 @@ void MFPlayerSession::handleSessionEvent(IMFMediaEvent *sessionEvent)
             break;
         }
         changeStatus(QMediaPlayer::InvalidMedia);
-        qWarning() << "handleSessionEvent: serious error = " << hrStatus;
-        emit error(QMediaPlayer::ResourceError, tr("Media session serious error."), true);
+        qWarning() << "handleSessionEvent: serious error = "
+                   << Qt::showbase << Qt::hex << Qt::uppercasedigits << static_cast<quint32>(hrStatus);
+        switch (hrStatus) {
+        case MF_E_NET_READ:
+            emit error(QMediaPlayer::NetworkError, tr("Error reading from the network."), true);
+            break;
+        case MF_E_NET_WRITE:
+            emit error(QMediaPlayer::NetworkError, tr("Error writing to the network."), true);
+            break;
+        case NS_E_FIREWALL:
+            emit error(QMediaPlayer::NetworkError, tr("Network packets might be blocked by a firewall."), true);
+            break;
+        case MF_E_MEDIAPROC_WRONGSTATE:
+            emit error(QMediaPlayer::ResourceError, tr("Media session state error."), true);
+            break;
+        default:
+            emit error(QMediaPlayer::ResourceError, tr("Media session serious error."), true);
+            break;
+        }
         break;
     case MESessionRateChanged:
         // If the rate change succeeded, we've already got the rate