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
|
#include <osl/conditn.hxx>
#include <vcl/graph.hxx>
#include <vcl/bmpacc.hxx>
#include <vcl/pngread.hxx>
#include <avmedia/mediawindow.hxx>
#include <unotools/localfilehelper.hxx>
#include <unotools/tempfile.hxx>
#include <unotools/ucbstreamhelper.hxx>
#include <tools/stream.hxx>
#include "vlcframegrabber.hxx"
#include "vlcplayer.hxx"
#include <vlc/libvlc_events.h>
#include <vlc/libvlc_media_player.h>
using namespace ::com::sun::star;
namespace avmedia {
namespace vlc {
const ::rtl::OUString AVMEDIA_VLC_GRABBER_IMPLEMENTATIONNAME = "com.sun.star.comp.avmedia.VLCFrameGrabber_VLC";
const ::rtl::OUString AVMEDIA_VLC_GRABBER_SERVICENAME = "com.sun.star.media.VLCFrameGrabber_VLC";
const int MSEC_IN_SEC = 1000;
SAL_CALL VLCFrameGrabber::VLCFrameGrabber( boost::shared_ptr<libvlc_media_player_t>& player, const rtl::OUString& url )
: FrameGrabber_BASE()
, mPlayer( player )
, mUrl( url )
{
}
namespace
{
void EventHandler( const libvlc_event_t *evemt, void *pData )
{
switch (evemt->type)
{
case libvlc_MediaPlayerPaused:
osl::Condition *condition = static_cast<osl::Condition*>( pData );
condition->set();
break;
}
}
}
::uno::Reference< css::graphic::XGraphic > SAL_CALL VLCFrameGrabber::grabFrame( double fMediaTime )
{
osl::Condition condition;
libvlc_media_player_t *player = mPlayer.get();
libvlc_event_manager_t *manager = libvlc_media_player_event_manager( player );
libvlc_event_attach( manager, libvlc_MediaPlayerPaused, EventHandler, &condition );
libvlc_audio_set_mute( player, true );
if (libvlc_media_player_play( player ) == -1)
{
std::cerr << "Couldn't play" << std::endl;
}
libvlc_media_player_set_time( player, ( fMediaTime > 0 ? fMediaTime : 0 ) * MSEC_IN_SEC );
libvlc_media_player_pause( player );
const TimeValue timeout = {2, 0};
condition.wait(&timeout);
if ( mUrl.isEmpty() || !libvlc_media_player_has_vout( player ) )
{
std::cerr << "Couldn't grab frame" << std::endl;
libvlc_audio_set_mute( player, false );
libvlc_event_detach( manager, libvlc_MediaPlayerPaused, EventHandler, &condition );
return ::uno::Reference< css::graphic::XGraphic >();
}
const rtl::OUString& fileName = utl::TempFile::CreateTempName();
rtl::OString dest;
fileName.convertToString( &dest, RTL_TEXTENCODING_UTF8, 0 );
libvlc_video_take_snapshot( player, 0, dest.getStr(), 0, 0 );
libvlc_audio_set_mute( player, false );
libvlc_media_player_stop( player );
libvlc_event_detach( manager, libvlc_MediaPlayerPaused, EventHandler, &condition );
rtl::OUString url;
utl::LocalFileHelper::ConvertPhysicalNameToURL( fileName, url );
boost::shared_ptr<SvStream> stream( utl::UcbStreamHelper::CreateStream( url,
STREAM_STD_READ ) );
vcl::PNGReader reader( *stream );
const BitmapEx& bitmap = reader.Read();
return Graphic( bitmap ).GetXGraphic();
}
::rtl::OUString SAL_CALL VLCFrameGrabber::getImplementationName()
{
return AVMEDIA_VLC_GRABBER_IMPLEMENTATIONNAME;
}
::sal_Bool SAL_CALL VLCFrameGrabber::supportsService( const ::rtl::OUString& serviceName )
{
return AVMEDIA_VLC_GRABBER_SERVICENAME == serviceName;
}
::uno::Sequence< ::rtl::OUString > SAL_CALL VLCFrameGrabber::getSupportedServiceNames()
{
::uno::Sequence< OUString > aRet(1);
aRet[0] = AVMEDIA_VLC_GRABBER_SERVICENAME;
return aRet;
}
}
}
|
