1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/* -*- 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 <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, StreamMode::READ | StreamMode::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
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
