summaryrefslogtreecommitdiffstats
path: root/krec/ogg_export/krecexport_ogg.cpp
blob: 32f274dfc19039ae401acaf40fa59ca90f443f11 (plain)
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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
/***************************************************************************
    copyright            : (C) 2003 by Arnold Krille
    email                : arnold@arnoldarts.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; version 2 of the License.               *
 *                                                                         *
 ***************************************************************************/

#include <config.h>

#ifdef HAVE_VORBIS

#include "krecexport_ogg.h"
#include "krecexport_ogg.moc"

#include "krecglobal.h"

#include <kdebug.h>
#include <ktempfile.h>
#include <tqfile.h>
#include <tqtimer.h>
#include <kconfig.h>
#include <stdlib.h>
#include <time.h>
#include <tqdatetime.h>
#include <kgenericfactory.h>
#include <klocale.h>
#include <kmessagebox.h>

K_EXPORT_COMPONENT_FACTORY( libkrecexport_ogg, KGenericFactory<KRecExport_OGG> )

KRecExport_OGG krecExportOGG( 0 );

KRecExport_OGG::KRecExport_OGG( TQObject* p, const char* n, const TQStringList& )
  : KRecExportItem( p,n )
  , _file( 0 )
  , init_done( false )
{
kdDebug( 60005 ) << k_funcinfo << endl;
	registerAtGlobal( this );
kdDebug( 60005 ) << "Registered Exports: " << KRecGlobal::the()->exportFormats() << endl;
}
KRecExport_OGG::~KRecExport_OGG() {
kdDebug( 60005 ) << k_funcinfo << endl;
}

KRecExport_OGG* KRecExport_OGG::newItem() {
kdDebug( 60005 ) << k_funcinfo << endl;
	return new KRecExport_OGG( 0 );
}

TQStringList KRecExport_OGG::extensions() {
	//kdDebug( 60005 ) << k_funcinfo << endl;
	TQStringList tmp;
	tmp << "*.ogg" << "*.OGG";
	return tmp;
}

bool KRecExport_OGG::initialize( const TQString &filename ) {
kdDebug( 60005 ) << k_funcinfo << endl;
	if ( !_file &&
	     !( samplingRate()!=44100 && bits()!=16 && channels()!=2 &&
	        KMessageBox::warningContinueCancel( KRecGlobal::the()->mainWidget(),
	          i18n( "At this time OGG-export only supports files in 44kHz " \
	                "samplingrate, 16bit and 2 channels." )
	        ) == KMessageBox::Cancel
	     )
	) {
		KMessageBox::information( KRecGlobal::the()->mainWidget(),
		  i18n( "Please note that this plugin takes its qualitysettings from" \
		        " the corresponding section of the audiocd:/ configuration. Make use" \
		        " of the Control Center to configure these settings." ),
		  i18n( "Quality Configuration" ), "qualityinfo_ogg" );
		_file = new TQFile( filename );
		if ( _file->open( IO_Raw|IO_WriteOnly ) ) {
			if ( ! init_done ) {
				setOggParameters();
				vorbis_analysis_init( &vd, &vi );
				vorbis_block_init( &vd, &vb );

				srand( time( NULL ) );
				ogg_stream_init( &os, rand() );
			}
			if ( _file->size() == 0 ) {
				ogg_packet header;
				ogg_packet header_comm;
				ogg_packet header_code;

				vorbis_comment_init( &vc );
				vorbis_comment_add_tag ( &vc, const_cast<char *>( "kde-encoder" ),
				                         const_cast<char *>( "KRec" ) );
				if ( write_vorbis_comments ) {
					TQDateTime dt = TQDateTime::currentDateTime();
					vorbis_comment_add_tag ( &vc, const_cast<char *>( "title" ),
					                         const_cast<char *>( "" ) );
					vorbis_comment_add_tag ( &vc, const_cast<char *>( "artist" ),
					                         const_cast<char *>( "" ) );
					vorbis_comment_add_tag ( &vc, const_cast<char *>( "album" ),
					                         const_cast<char *>( "" ) );
					vorbis_comment_add_tag ( &vc, const_cast<char *>( "genre" ),
					                         const_cast<char *>( "" ) );
					vorbis_comment_add_tag ( &vc, const_cast<char *>( "tracknumber" ),
					                         const_cast<char *>( "" ) );
					vorbis_comment_add_tag ( &vc, const_cast<char *>( "date" ),
					                         const_cast<char *>( dt.toString( "yyyy-MM-dd hh:mm:ss" ).utf8().data() ) );
				}
				vorbis_analysis_headerout( &vd, &vc, &header, &header_comm, &header_code );

				ogg_stream_packetin( &os, &header );
				ogg_stream_packetin( &os, &header_comm );
				ogg_stream_packetin( &os, &header_code );

				while ( ogg_stream_flush( &os, &og ) ) {
					//kdDebug( 60005 ) << "Writing Ogg/Vorbis Header." << endl;
					_file->writeBlock( reinterpret_cast<char *>( og.header ), og.header_len );
					_file->writeBlock( reinterpret_cast<char *>( og.body ), og.body_len );
				}
			} else
				_file->at( _file->size() );
			init_done = true;
		} else return false;
		return true;
	}
	return false;
}
bool KRecExport_OGG::process() {
	//kdDebug( 60005 ) << k_funcinfo << endl;
	if ( _file ) {
		if ( running() ) {
			TQByteArray bytearray( 4096 );
			emit getData( bytearray );
			float **buffer = vorbis_analysis_buffer( &vd, bytearray.size() >> 2 );

			// uninterleave samples
			unsigned int i;
			int index = 0;
			int16_t sample;
			unsigned char *packet = reinterpret_cast<unsigned char *>( bytearray.data() );
			for ( i = 0; i < ( bytearray.size() >> 2 ); i++ ) {
				sample = packet[ index ] | ( packet[ index + 1 ] << 8 );
				index += 2;
				buffer[ 0 ][ i ] = sample / 32768.0;
				sample = packet[ index ] | ( packet[ index + 1 ] << 8 );
				index += 2;
				buffer[ 1 ][ i ] = sample / 32768.0;
			}

			vorbis_analysis_wrote( &vd, i );

			while ( vorbis_analysis_blockout( &vd, &vb ) == 1 ) {
#if HAVE_VORBIS >= 2
				vorbis_analysis( &vb, NULL );
				vorbis_bitrate_addblock( &vb );
				while ( vorbis_bitrate_flushpacket( &vd, &op ) ) {
#else
				// Support for very old libvorbis
				vorbis_analysis( &vb, &op );
				{
#endif
					ogg_stream_packetin( &os, &op );
					while ( ogg_stream_pageout( &os, &og ) ) {
						_file->writeBlock( reinterpret_cast<char *>( og.header ), og.header_len );
						_file->writeBlock( reinterpret_cast<char *>( og.body ), og.body_len );
					}
				}
			}
			TQTimer::singleShot( 10, this, TQT_SLOT( process() ) );
		}
		return true;
	} else return false;
}
bool KRecExport_OGG::finalize() {
kdDebug( 60005 ) << k_funcinfo << endl;
	if ( _file ) {
		ogg_stream_clear( &os );
		vorbis_block_clear( &vb );
		vorbis_dsp_clear( &vd );
		vorbis_info_clear( &vi );

		_file->close();
		delete _file;
		_file = 0;

		return true;
	} else return false;
}


// Derived from tdemultimedia/kioslave/audiocd/audiocd.cpp.
// We use the encoding settings from kcmaudiocd.
void KRecExport_OGG::setOggParameters() {
kdDebug( 60005 ) << k_funcinfo << endl;
	KConfig *config;
	config = new KConfig( "kcmaudiocdrc" );

	config->setGroup( "Vorbis" );

	// 0 for quality, 1 for managed bitrate
	int vorbis_encode_method = config->readNumEntry( "encmethod", 0 );
	// default quality level of 3, to match oggenc
	double vorbis_quality = config->readDoubleNumEntry( "quality",3.0 );

	int vorbis_bitrate_lower = -1;
	if (  config->readBoolEntry( "set_vorbis_min_bitrate",false ) )
		vorbis_bitrate_lower = config->readNumEntry( "vorbis_min_bitrate",40 ) * 1000;

	int vorbis_bitrate_upper = -1;
	if (  config->readBoolEntry( "set_vorbis_max_bitrate",false ) )
		vorbis_bitrate_upper = config->readNumEntry( "vorbis_max_bitrate",350 ) * 1000;

	// this is such a hack!
	int vorbis_bitrate;
	if (  vorbis_bitrate_upper != -1 && vorbis_bitrate_lower != -1 )
		vorbis_bitrate = 104000; // empirically determined ...?!
	else
		vorbis_bitrate = 160 * 1000;

	int vorbis_bitrate_nominal = -1;
	if (  config->readBoolEntry( "set_vorbis_nominal_bitrate",true ) ) {
		vorbis_bitrate_nominal = config->readNumEntry( "vorbis_nominal_bitrate",160 ) * 1000;
		vorbis_bitrate = vorbis_bitrate_nominal;
	}

	write_vorbis_comments = config->readBoolEntry( "vorbis_comments",true );

	vorbis_info_init(  &vi );
	switch (  vorbis_encode_method ) {
		case 0:
			// Support very old libvorbis by simply falling through
#if HAVE_VORBIS >= 2
			vorbis_encode_init_vbr(  &vi, 2/*this->channels()*/,
			                         44100/*this->samplingRate()*/,
			                         vorbis_quality/10.0 );
			break;
#endif
		case 1:
			vorbis_encode_init(  &vi, 2/*this->channels()*/,
			                     44100/*this->samplingRate()*/,
			                     vorbis_bitrate_upper, vorbis_bitrate_nominal,
			                     vorbis_bitrate_lower );
			break;
	}

	delete config;
}

#endif // vorbis

// vim:sw=4:ts=4