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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include "framegrabber.hxx"
#include "player.hxx"
#include <sal/log.hxx>
#include <tools/stream.hxx>
#include <vcl/graph.hxx>
#include <vcl/cvtgrf.hxx>
#include <unotools/localfilehelper.hxx>
using namespace ::com::sun::star;
namespace avmedia::macavf {
FrameGrabber::FrameGrabber()
: mpImageGen( nullptr )
{}
FrameGrabber::~FrameGrabber()
{
if( mpImageGen )
CFRelease( mpImageGen );
}
bool FrameGrabber::create( AVAsset* pMovie )
{
if( [[pMovie tracksWithMediaType:AVMediaTypeVideo] count] == 0)
{
SAL_WARN("avmedia", "AVGrabber::create() found no video content!" );
return false;
}
mpImageGen = [AVAssetImageGenerator assetImageGeneratorWithAsset:pMovie];
CFRetain( mpImageGen );
return true;
}
uno::Reference< graphic::XGraphic > SAL_CALL FrameGrabber::grabFrame( double fMediaTime )
{
uno::Reference< graphic::XGraphic > xRet;
if( !mpImageGen )
return xRet;
// get the requested image from the movie
CGImage* pCGImage = [mpImageGen copyCGImageAtTime:CMTimeMakeWithSeconds(fMediaTime,1000) actualTime:nullptr error:nullptr];
// convert the image to a TIFF-formatted byte-array
CFMutableDataRef pCFData = CFDataCreateMutable( kCFAllocatorDefault, 0 );
SAL_WNODEPRECATED_DECLARATIONS_PUSH // kUTTypeTIFF (12.0)
CGImageDestination* pCGImgDest = CGImageDestinationCreateWithData( pCFData, kUTTypeTIFF, 1, nullptr );
SAL_WNODEPRECATED_DECLARATIONS_POP
CGImageDestinationAddImage( pCGImgDest, pCGImage, nullptr );
CGImageDestinationFinalize( pCGImgDest );
CFRelease( pCGImgDest );
const CFIndex nBitmapLen = CFDataGetLength( pCFData );
UInt8 * pBitmapBytes = const_cast<UInt8 *>(CFDataGetBytePtr( pCFData ));
// convert the image into the return-value type which is a graphic::XGraphic
SvMemoryStream aMemStm( pBitmapBytes, nBitmapLen, StreamMode::READ | StreamMode::WRITE );
Graphic aGraphic;
if( GraphicConverter::Import( aMemStm, aGraphic, ConvertDataFormat::TIF ) == ERRCODE_NONE )
xRet = aGraphic.GetXGraphic();
// clean up resources
CFRelease( pCFData );
return xRet;
}
OUString SAL_CALL FrameGrabber::getImplementationName( )
{
return AVMEDIA_MACAVF_FRAMEGRABBER_IMPLEMENTATIONNAME;
}
sal_Bool SAL_CALL FrameGrabber::supportsService( const OUString& ServiceName )
{
return ServiceName == AVMEDIA_MACAVF_FRAMEGRABBER_SERVICENAME;
}
uno::Sequence< OUString > SAL_CALL FrameGrabber::getSupportedServiceNames( )
{
return { AVMEDIA_MACAVF_FRAMEGRABBER_SERVICENAME };
}
} // namespace avmedia::macavf
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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