VLCSource, VmemRenderer: Use const uint8_t* snapshot

Signed-off-by: Hugo Beauzée-Luyssen <hugo@beauzee.fr>

src/Backend/VLC/VLCSource.h

@@ -69,7 +69,7 @@ private:
     unsigned int                m_nbVideoTracks;
     unsigned int                m_nbAudioTracks;
     int64_t                     m_length; //in milliseconds.
-    uint8_t*                    m_snapshot;
+    const uint8_t*              m_snapshot;
     bool                        m_isParsed;
     int64_t                     m_nbFrames;
 };

src/Backend/VLC/VLCVmemRenderer.cpp

@@ -66,7 +66,7 @@ VmemRenderer::mediaPlayer()
     return m_mediaPlayer;
 }
 
-uint8_t*
+const uint8_t*
 VmemRenderer::waitSnapshot()
 {
     QMutexLocker lock( &m_mutex );

src/Backend/VLC/VLCVmemRenderer.h

@@ -47,7 +47,7 @@ public:
      *  the caller.
      * @return
      */
-    uint8_t *waitSnapshot();
+    const uint8_t *waitSnapshot();
 
 private:
     void*    vmemLock( void **planes );