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/**************************************************************
*
* 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
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*************************************************************/
#include "macavf_framegrabber.hxx"
#include "macavf_player.hxx"
#include <tools/stream.hxx>
#include <vcl/graph.hxx>
#include <vcl/cvtgrf.hxx>
#include <unotools/localfilehelper.hxx>
using namespace ::com::sun::star;
namespace avmedia { namespace macavf {
// ----------------
// - FrameGrabber -
// ----------------
FrameGrabber::FrameGrabber( const uno::Reference< lang::XMultiServiceFactory >& /*rxMgr*/ )
: mpImageGen( NULL )
{}
// ------------------------------------------------------------------------------
FrameGrabber::~FrameGrabber()
{
if( mpImageGen )
CFRelease( mpImageGen );
}
// ------------------------------------------------------------------------------
bool FrameGrabber::create( const ::rtl::OUString& rURL )
{
NSString* pNSStr = [NSString stringWithCharacters:rURL.getStr() length:rURL.getLength()];
NSURL* pNSURL = [NSURL URLWithString: [pNSStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
AVAsset* pMovie = [AVURLAsset URLAssetWithURL:pNSURL options:nil];
if( !pMovie )
{
OSL_TRACE( "AVGrabber::create() cannot load url=\"%s\"", [pNSStr UTF8String] );
return false;
}
return create( pMovie );
}
// ------------------------------------------------------------------------------
bool FrameGrabber::create( AVAsset* pMovie )
{
if( [[pMovie tracksWithMediaType:AVMediaTypeVideo] count] == 0)
{
OSL_TRACE( "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 )
throw (uno::RuntimeException)
{
uno::Reference< graphic::XGraphic > xRet;
if( !mpImageGen )
return xRet;
OSL_TRACE( "AVPlayer::grabFrame( %.3fsec)", fMediaTime );
// get the requested image from the movie
CGImage* pCGImage = [mpImageGen copyCGImageAtTime:CMTimeMakeWithSeconds(fMediaTime,1000) actualTime:NULL error:NULL];
// convert the image to a TIFF-formatted byte-array
CFMutableDataRef pCFData = CFDataCreateMutable( kCFAllocatorDefault, 0 );
CGImageDestination* pCGImgDest = CGImageDestinationCreateWithData( pCFData, kUTTypeTIFF, 1, 0 );
CGImageDestinationAddImage( pCGImgDest, pCGImage, NULL );
CGImageDestinationFinalize( pCGImgDest );
CFRelease( pCGImgDest );
const long nBitmapLen = CFDataGetLength( pCFData );
void* pBitmapBytes = (void*)CFDataGetBytePtr( pCFData );
// convert the image into the return-value type which is a graphic::XGraphic
SvMemoryStream aMemStm( pBitmapBytes, nBitmapLen, STREAM_READ | STREAM_WRITE );
Graphic aGraphic;
if( GraphicConverter::Import( aMemStm, aGraphic, CVT_TIF ) == ERRCODE_NONE )
xRet = aGraphic.GetXGraphic();
// clean up resources
CFRelease( pCFData );
return xRet;
}
// ------------------------------------------------------------------------------
::rtl::OUString SAL_CALL FrameGrabber::getImplementationName( )
throw (uno::RuntimeException)
{
return ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( AVMEDIA_MACAVF_FRAMEGRABBER_IMPLEMENTATIONNAME ) );
}
// ------------------------------------------------------------------------------
sal_Bool SAL_CALL FrameGrabber::supportsService( const ::rtl::OUString& ServiceName )
throw (uno::RuntimeException)
{
return ServiceName.equalsAsciiL( RTL_CONSTASCII_STRINGPARAM ( AVMEDIA_MACAVF_FRAMEGRABBER_SERVICENAME ) );
}
// ------------------------------------------------------------------------------
uno::Sequence< ::rtl::OUString > SAL_CALL FrameGrabber::getSupportedServiceNames( )
throw (uno::RuntimeException)
{
uno::Sequence< ::rtl::OUString > aRet(1);
aRet[0] = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( AVMEDIA_MACAVF_FRAMEGRABBER_SERVICENAME ) );
return aRet;
}
} // namespace macavf
} // namespace avmedia
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