1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 #include "macavf_framegrabber.hxx" 23 #include "macavf_player.hxx" 24 25 #include <tools/stream.hxx> 26 #include <vcl/graph.hxx> 27 #include <vcl/cvtgrf.hxx> 28 #include <unotools/localfilehelper.hxx> 29 30 using namespace ::com::sun::star; 31 32 namespace avmedia { namespace macavf { 33 34 // ---------------- 35 // - FrameGrabber - 36 // ---------------- 37 38 FrameGrabber::FrameGrabber( const uno::Reference< lang::XMultiServiceFactory >& /*rxMgr*/ ) 39 : mpImageGen( NULL ) 40 {} 41 42 // ------------------------------------------------------------------------------ 43 44 FrameGrabber::~FrameGrabber() 45 { 46 if( mpImageGen ) 47 CFRelease( mpImageGen ); 48 } 49 50 // ------------------------------------------------------------------------------ 51 52 bool FrameGrabber::create( const ::rtl::OUString& rURL ) 53 { 54 NSString* pNSStr = [NSString stringWithCharacters:rURL.getStr() length:rURL.getLength()]; 55 NSURL* pNSURL = [NSURL URLWithString: [pNSStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; 56 AVAsset* pMovie = [AVURLAsset URLAssetWithURL:pNSURL options:nil]; 57 if( !pMovie ) 58 { 59 OSL_TRACE( "AVGrabber::create() cannot load url=\"%s\"", [pNSStr UTF8String] ); 60 return false; 61 } 62 63 return create( pMovie ); 64 } 65 66 // ------------------------------------------------------------------------------ 67 68 bool FrameGrabber::create( AVAsset* pMovie ) 69 { 70 if( [[pMovie tracksWithMediaType:AVMediaTypeVideo] count] == 0) 71 { 72 OSL_TRACE( "AVGrabber::create() found no video content!" ); 73 return false; 74 } 75 76 mpImageGen = [AVAssetImageGenerator assetImageGeneratorWithAsset:pMovie]; 77 CFRetain( mpImageGen ); 78 return true; 79 } 80 81 // ------------------------------------------------------------------------------ 82 83 uno::Reference< graphic::XGraphic > SAL_CALL FrameGrabber::grabFrame( double fMediaTime ) 84 throw (uno::RuntimeException) 85 { 86 uno::Reference< graphic::XGraphic > xRet; 87 if( !mpImageGen ) 88 return xRet; 89 OSL_TRACE( "AVPlayer::grabFrame( %.3fsec)", fMediaTime ); 90 91 // get the requested image from the movie 92 CGImage* pCGImage = [mpImageGen copyCGImageAtTime:CMTimeMakeWithSeconds(fMediaTime,1000) actualTime:NULL error:NULL]; 93 94 // convert the image to a TIFF-formatted byte-array 95 CFMutableDataRef pCFData = CFDataCreateMutable( kCFAllocatorDefault, 0 ); 96 CGImageDestination* pCGImgDest = CGImageDestinationCreateWithData( pCFData, kUTTypeTIFF, 1, 0 ); 97 CGImageDestinationAddImage( pCGImgDest, pCGImage, NULL ); 98 CGImageDestinationFinalize( pCGImgDest ); 99 CFRelease( pCGImgDest ); 100 const long nBitmapLen = CFDataGetLength( pCFData ); 101 void* pBitmapBytes = (void*)CFDataGetBytePtr( pCFData ); 102 103 // convert the image into the return-value type which is a graphic::XGraphic 104 SvMemoryStream aMemStm( pBitmapBytes, nBitmapLen, STREAM_READ | STREAM_WRITE ); 105 Graphic aGraphic; 106 if( GraphicConverter::Import( aMemStm, aGraphic, CVT_TIF ) == ERRCODE_NONE ) 107 xRet = aGraphic.GetXGraphic(); 108 109 // clean up resources 110 CFRelease( pCFData ); 111 return xRet; 112 } 113 114 // ------------------------------------------------------------------------------ 115 116 ::rtl::OUString SAL_CALL FrameGrabber::getImplementationName( ) 117 throw (uno::RuntimeException) 118 { 119 return ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( AVMEDIA_MACAVF_FRAMEGRABBER_IMPLEMENTATIONNAME ) ); 120 } 121 122 // ------------------------------------------------------------------------------ 123 124 sal_Bool SAL_CALL FrameGrabber::supportsService( const ::rtl::OUString& ServiceName ) 125 throw (uno::RuntimeException) 126 { 127 return ServiceName.equalsAsciiL( RTL_CONSTASCII_STRINGPARAM ( AVMEDIA_MACAVF_FRAMEGRABBER_SERVICENAME ) ); 128 } 129 130 // ------------------------------------------------------------------------------ 131 132 uno::Sequence< ::rtl::OUString > SAL_CALL FrameGrabber::getSupportedServiceNames( ) 133 throw (uno::RuntimeException) 134 { 135 uno::Sequence< ::rtl::OUString > aRet(1); 136 aRet[0] = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( AVMEDIA_MACAVF_FRAMEGRABBER_SERVICENAME ) ); 137 138 return aRet; 139 } 140 141 } // namespace macavf 142 } // namespace avmedia 143 144