[vlmc-devel] Media: Take snapshot

[Yikai Lu]

vlmc | branch: master | Yikai Lu <luyikei.qmltu at gmail.com> | Sun Jul 24 18:12:18 2016 +0900| [79a4771767699f698a27736123f6aedf96b0845f] | committer: Yikai Lu

Media: Take snapshot

> https://code.videolan.org/videolan/vlmc/commit/79a4771767699f698a27736123f6aedf96b0845f
---

 src/Media/Media.cpp | 19 ++++++++++++++-----
 src/Media/Media.h   |  1 -
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/src/Media/Media.cpp b/src/Media/Media.cpp
index a1c9aa9..0c1547a 100644
--- a/src/Media/Media.cpp
+++ b/src/Media/Media.cpp
@@ -62,9 +62,6 @@ Media::Media(const QString &path )
     : m_input( nullptr )
     , m_fileInfo( nullptr )
     , m_baseClip( nullptr )
-#ifdef WITH_GUI
-    , m_snapshotImage( nullptr )
-#endif
 {
     setFilePath( path );
 }
@@ -144,7 +141,19 @@ Media::setFilePath( const QString &filePath )
 QPixmap&
 Media::snapshot()
 {
-    Media::defaultSnapshot = new QPixmap( ":/images/vlmc" );
-    return *Media::defaultSnapshot;
+    if ( Media::defaultSnapshot == nullptr )
+        Media::defaultSnapshot = new QPixmap( ":/images/vlmc" );
+
+    if ( m_snapshot.isNull() == true ) {
+        int height = 200;
+        int width = height * m_input->aspectRatio();
+        m_input->setPosition( m_input->length() / 3 );
+        QImage img( m_input->image( width, height ), width, height,
+                    QImage::Format_RGBA8888, []( void* buf ){ delete[] (uchar*) buf; } );
+        m_input->setPosition( 0 );
+        m_snapshot.convertFromImage( img );
+    }
+
+    return m_snapshot.isNull() ? *Media::defaultSnapshot : m_snapshot;
 }
 #endif
diff --git a/src/Media/Media.h b/src/Media/Media.h
index 4156c25..16b7f1e 100644
--- a/src/Media/Media.h
+++ b/src/Media/Media.h
@@ -123,7 +123,6 @@ protected:
 #ifdef WITH_GUI
     static QPixmap*             defaultSnapshot;
     QPixmap                     m_snapshot;
-    QImage*                     m_snapshotImage;
 #endif
 
 signals: