avmedia/source/quicktime/framegrabber.cxx

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  30
  31 #include "framegrabber.hxx"
  32 #include "player.hxx"
  33
  34 #include <tools/stream.hxx>
  35 #include <vcl/graph.hxx>
  36 #include <vcl/cvtgrf.hxx>
  37 #include <unotools/localfilehelper.hxx>
  38
  39 #define AVMEDIA_QUICKTIME_FRAMEGRABBER_IMPLEMENTATIONNAME "com.sun.star.comp.avmedia.FrameGrabber_Quicktime"
  40 #define AVMEDIA_QUICKTIME_FRAMEGRABBER_SERVICENAME "com.sun.star.media.FrameGrabber_Quicktime"
  41
  42 using namespace ::com::sun::star;
  43
  44 namespace avmedia { namespace quicktime {
  45
  46 // ----------------
  47 // - FrameGrabber -
  48 // ----------------
  49
  50 FrameGrabber::FrameGrabber( const uno::Reference< lang::XMultiServiceFactory >& rxMgr ) :
  51     mxMgr( rxMgr )
  52 {
  53     OSErr result;
  54
  55     NSAutoreleasePool* pool     = [[NSAutoreleasePool alloc] init];
  56     // check the version of QuickTime installed
  57     result = Gestalt(gestaltQuickTime,&mnVersion);
  58      if ((result == noErr) && (mnVersion >= QT701))
  59     {
  60       // we have version 7.01 or later, initialize
  61       mpMovie = [QTMovie movie];
  62       [mpMovie retain];
  63       mbInitialized = true;
  64     }
  65     [pool release];
  66 }
  67
  68 // ------------------------------------------------------------------------------
  69
  70 FrameGrabber::~FrameGrabber()
  71 {
  72     if( mbInitialized )
  73     {
  74         if( mpMovie )
  75         {
  76             [mpMovie release];
  77             mpMovie = nil;
  78         }
  79     }
  80 }
  81
  82 // ------------------------------------------------------------------------------
  83
  84 bool FrameGrabber::create( const ::rtl::OUString& rURL )
  85 {
  86     bool bRet = false;
  87     maURL = rURL;
  88     NSAutoreleasePool* pool     = [[NSAutoreleasePool alloc] init];
  89     NSString* aNSStr = [[[NSString alloc] initWithCharacters: rURL.getStr() length: rURL.getLength()]stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding] ;
  90     NSURL* aURL = [NSURL URLWithString:aNSStr ];
  91
  92     // create the Movie
  93
  94         mpMovie = [mpMovie initWithURL:aURL error:nil];
  95         if(mpMovie)
  96         {
  97             [mpMovie retain];
  98             bRet = true;
  99         }
 100
 101     [pool release];
 102
 103     return( bRet );
 104 }
 105
 106 // ------------------------------------------------------------------------------
 107
 108 uno::Reference< graphic::XGraphic > SAL_CALL FrameGrabber::grabFrame( double fMediaTime )
 109     throw (uno::RuntimeException)
 110 {
 111     uno::Reference< graphic::XGraphic > xRet;
 112
 113     NSImage* pImage = [mpMovie frameImageAtTime: QTMakeTimeWithTimeInterval(fMediaTime)];
 114     NSData *pBitmap = [pImage TIFFRepresentation];
 115     long nSize = [pBitmap length];
 116     const void* pBitmapData = [pBitmap bytes];
 117     SvMemoryStream  aMemStm( (char *)pBitmapData, nSize, STREAM_READ | STREAM_WRITE );
 118     Graphic aGraphic;
 119     if ( GraphicConverter::Import( aMemStm, aGraphic, CVT_TIF ) == ERRCODE_NONE )
 120     {
 121         xRet = aGraphic.GetXGraphic();
 122     }
 123
 124     return xRet;
 125 }
 126
 127 // ------------------------------------------------------------------------------
 128
 129 ::rtl::OUString SAL_CALL FrameGrabber::getImplementationName(  )
 130     throw (uno::RuntimeException)
 131 {
 132     return ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( AVMEDIA_QUICKTIME_FRAMEGRABBER_IMPLEMENTATIONNAME ) );
 133 }
 134
 135 // ------------------------------------------------------------------------------
 136
 137 sal_Bool SAL_CALL FrameGrabber::supportsService( const ::rtl::OUString& ServiceName )
 138     throw (uno::RuntimeException)
 139 {
 140     return ServiceName.equalsAsciiL( RTL_CONSTASCII_STRINGPARAM ( AVMEDIA_QUICKTIME_FRAMEGRABBER_SERVICENAME ) );
 141 }
 142
 143 // ------------------------------------------------------------------------------
 144
 145 uno::Sequence< ::rtl::OUString > SAL_CALL FrameGrabber::getSupportedServiceNames(  )
 146     throw (uno::RuntimeException)
 147 {
 148     uno::Sequence< ::rtl::OUString > aRet(1);
 149     aRet[0] = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( AVMEDIA_QUICKTIME_FRAMEGRABBER_SERVICENAME ) );
 150
 151     return aRet;
 152 }
 153
 154 } // namespace quicktime
 155 } // namespace avmedia