142 lines
4.9 KiB
Text
142 lines
4.9 KiB
Text
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include "framegrabber.hxx"
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#include "player.hxx"
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#include <tools/stream.hxx>
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#include <vcl/graph.hxx>
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#include <vcl/cvtgrf.hxx>
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#include <unotools/localfilehelper.hxx>
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using namespace ::com::sun::star;
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namespace avmedia { namespace macavf {
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// ----------------
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// - FrameGrabber -
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// ----------------
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FrameGrabber::FrameGrabber( const uno::Reference< lang::XMultiServiceFactory >& /*rxMgr*/ )
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: mpImageGen( NULL )
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{}
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// ------------------------------------------------------------------------------
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FrameGrabber::~FrameGrabber()
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{
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if( mpImageGen )
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CFRelease( mpImageGen );
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}
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// ------------------------------------------------------------------------------
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bool FrameGrabber::create( const ::rtl::OUString& rURL )
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{
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NSString* pNSStr = [NSString stringWithCharacters:rURL.getStr() length:rURL.getLength()];
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NSURL* pNSURL = [NSURL URLWithString: [pNSStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
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AVAsset* pMovie = [AVURLAsset URLAssetWithURL:pNSURL options:nil];
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if( !pMovie )
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{
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OSL_TRACE( "AVGrabber::create() cannot load url=\"%s\"", [pNSStr UTF8String] );
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return false;
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}
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return create( pMovie );
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}
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// ------------------------------------------------------------------------------
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bool FrameGrabber::create( AVAsset* pMovie )
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{
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if( [[pMovie tracksWithMediaType:AVMediaTypeVideo] count] == 0)
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{
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OSL_TRACE( "AVGrabber::create() found no video content!" );
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return false;
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}
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mpImageGen = [AVAssetImageGenerator assetImageGeneratorWithAsset:pMovie];
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CFRetain( mpImageGen );
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return true;
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}
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// ------------------------------------------------------------------------------
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uno::Reference< graphic::XGraphic > SAL_CALL FrameGrabber::grabFrame( double fMediaTime )
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throw (uno::RuntimeException)
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{
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uno::Reference< graphic::XGraphic > xRet;
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if( !mpImageGen )
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return xRet;
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OSL_TRACE( "AVPlayer::grabFrame( %.3fsec)", fMediaTime );
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// get the requested image from the movie
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CGImage* pCGImage = [mpImageGen copyCGImageAtTime:CMTimeMakeWithSeconds(fMediaTime,1000) actualTime:NULL error:NULL];
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// convert the image to a TIFF-formatted byte-array
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CFMutableDataRef pCFData = CFDataCreateMutable( kCFAllocatorDefault, 0 );
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CGImageDestination* pCGImgDest = CGImageDestinationCreateWithData( pCFData, kUTTypeTIFF, 1, 0 );
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CGImageDestinationAddImage( pCGImgDest, pCGImage, NULL );
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CGImageDestinationFinalize( pCGImgDest );
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CFRelease( pCGImgDest );
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const long nBitmapLen = CFDataGetLength( pCFData );
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void* pBitmapBytes = (void*)CFDataGetBytePtr( pCFData );
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// convert the image into the return-value type which is a graphic::XGraphic
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SvMemoryStream aMemStm( pBitmapBytes, nBitmapLen, StreamMode::READ | StreamMode::WRITE );
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Graphic aGraphic;
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if( GraphicConverter::Import( aMemStm, aGraphic, CVT_TIF ) == ERRCODE_NONE )
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xRet = aGraphic.GetXGraphic();
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// clean up resources
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CFRelease( pCFData );
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return xRet;
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}
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// ------------------------------------------------------------------------------
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::rtl::OUString SAL_CALL FrameGrabber::getImplementationName( )
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throw (uno::RuntimeException)
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{
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return ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( AVMEDIA_MACAVF_FRAMEGRABBER_IMPLEMENTATIONNAME ) );
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}
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// ------------------------------------------------------------------------------
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sal_Bool SAL_CALL FrameGrabber::supportsService( const ::rtl::OUString& ServiceName )
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throw (uno::RuntimeException)
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{
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return ServiceName.equalsAsciiL( RTL_CONSTASCII_STRINGPARAM ( AVMEDIA_MACAVF_FRAMEGRABBER_SERVICENAME ) );
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}
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// ------------------------------------------------------------------------------
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uno::Sequence< ::rtl::OUString > SAL_CALL FrameGrabber::getSupportedServiceNames( )
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throw (uno::RuntimeException)
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{
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uno::Sequence< ::rtl::OUString > aRet(1);
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aRet[0] = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( AVMEDIA_MACAVF_FRAMEGRABBER_SERVICENAME ) );
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return aRet;
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}
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} // namespace macavf
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} // namespace avmedia
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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