1 /* $Id: encvorbis.c,v 1.6 2005/03/05 15:08:32 titer Exp $
3 This file is part of the HandBrake source code.
4 Homepage: <http://handbrake.m0k.org/>.
5 It may be used under the terms of the GNU General Public License. */
9 #include "vorbis/vorbisenc.h"
11 #define OGGVORBIS_FRAME_SIZE 1024
13 int encvorbisInit( hb_work_object_t *, hb_job_t * );
14 int encvorbisWork( hb_work_object_t *, hb_buffer_t **, hb_buffer_t ** );
15 void encvorbisClose( hb_work_object_t * );
17 hb_work_object_t hb_encvorbis =
20 "Vorbis encoder (libvorbis)",
26 struct hb_work_private_s
35 unsigned long input_samples;
40 int out_discrete_channels;
44 int encvorbisInit( hb_work_object_t * w, hb_job_t * job )
48 struct ovectl_ratemanage2_arg ctl_rate_arg;
50 hb_work_private_t * pv = calloc( 1, sizeof( hb_work_private_t ) );
52 pv->out_discrete_channels = HB_AMIXDOWN_GET_DISCRETE_CHANNEL_COUNT(w->amixdown);
56 hb_log( "encvorbis: opening libvorbis" );
59 vorbis_info_init( &pv->vi );
60 if( vorbis_encode_setup_managed( &pv->vi, pv->out_discrete_channels,
61 job->arate, -1, 1000 * job->abitrate, -1 ) )
63 hb_log( "encvorbis: vorbis_encode_setup_managed failed" );
68 if( vorbis_encode_ctl( &pv->vi, OV_ECTL_RATEMANAGE2_GET, &ctl_rate_arg) )
70 hb_log( "encvorbis: vorbis_encode_ctl( ratemanage2_get ) failed" );
73 ctl_rate_arg.bitrate_average_kbps = 1000 * job->abitrate;
74 ctl_rate_arg.managed = 1;
76 if( vorbis_encode_ctl( &pv->vi, OV_ECTL_RATEMANAGE2_SET, &ctl_rate_arg ) ||
77 vorbis_encode_setup_init( &pv->vi ) )
79 hb_log( "encvorbis: vorbis_encode_ctl( ratemanage2_set ) OR vorbis_encode_setup_init failed" );
85 vorbis_comment_init( &pv->vc );
86 vorbis_comment_add_tag( &pv->vc, "Encoder", "HandBrake");
87 vorbis_comment_add_tag( &pv->vc, "LANGUAGE", w->config->vorbis.language);
89 /* set up the analysis state and auxiliary encoding storage */
90 vorbis_analysis_init( &pv->vd, &pv->vi);
91 vorbis_block_init( &pv->vd, &pv->vb);
93 /* get the 3 headers */
94 vorbis_analysis_headerout( &pv->vd, &pv->vc,
95 &header[0], &header[1], &header[2] );
96 for( i = 0; i < 3; i++ )
98 memcpy( w->config->vorbis.headers[i], &header[i],
99 sizeof( ogg_packet ) );
100 memcpy( w->config->vorbis.headers[i] + sizeof( ogg_packet ),
101 header[i].packet, header[i].bytes );
104 pv->input_samples = pv->out_discrete_channels * OGGVORBIS_FRAME_SIZE;
105 pv->buf = malloc( pv->input_samples * sizeof( float ) );
107 pv->list = hb_list_init();
109 switch (pv->out_discrete_channels) {
111 pv->channel_map[0] = 0;
114 pv->channel_map[0] = 0;
115 pv->channel_map[1] = 2;
116 pv->channel_map[2] = 1;
117 pv->channel_map[3] = 4;
118 pv->channel_map[4] = 5;
119 pv->channel_map[5] = 3;
122 hb_log("encvorbis.c: Unable to correctly proccess %d channels, assuming stereo.", pv->out_discrete_channels);
125 pv->channel_map[0] = 0;
126 pv->channel_map[1] = 1;
133 /***********************************************************************
135 ***********************************************************************
137 **********************************************************************/
138 void encvorbisClose( hb_work_object_t * w )
140 hb_work_private_t * pv = w->private_data;
142 vorbis_block_clear( &pv->vb );
143 vorbis_dsp_clear( &pv->vd );
144 vorbis_comment_clear( &pv->vc );
145 vorbis_info_clear( &pv->vi );
147 hb_list_empty( &pv->list );
151 w->private_data = NULL;
154 /***********************************************************************
156 ***********************************************************************
158 **********************************************************************/
159 static hb_buffer_t * Flush( hb_work_object_t * w )
161 hb_work_private_t * pv = w->private_data;
164 if( vorbis_analysis_blockout( &pv->vd, &pv->vb ) == 1 )
168 vorbis_analysis( &pv->vb, NULL );
169 vorbis_bitrate_addblock( &pv->vb );
171 if( vorbis_bitrate_flushpacket( &pv->vd, &op ) )
173 buf = hb_buffer_init( sizeof( ogg_packet ) + op.bytes );
174 memcpy( buf->data, &op, sizeof( ogg_packet ) );
175 memcpy( buf->data + sizeof( ogg_packet ), op.packet,
177 buf->frametype = HB_FRAME_AUDIO;
178 buf->start = pv->pts; /* No exact, but who cares - the OGM
179 muxer doesn't use it */
180 buf->stop = buf->start +
181 90000 * OGGVORBIS_FRAME_SIZE + pv->job->arate;
190 /***********************************************************************
192 ***********************************************************************
194 **********************************************************************/
195 static hb_buffer_t * Encode( hb_work_object_t * w )
197 hb_work_private_t * pv = w->private_data;
202 /* Try to extract more data */
203 if( ( buf = Flush( w ) ) )
208 if( hb_list_bytes( pv->list ) < pv->input_samples * sizeof( float ) )
213 /* Process more samples */
214 hb_list_getbytes( pv->list, pv->buf, pv->input_samples * sizeof( float ),
216 buffer = vorbis_analysis_buffer( &pv->vd, OGGVORBIS_FRAME_SIZE );
217 for( i = 0; i < OGGVORBIS_FRAME_SIZE; i++ )
219 for( j = 0; j < pv->out_discrete_channels; j++)
221 buffer[j][i] = ((float *) pv->buf)[(pv->out_discrete_channels * i + pv->channel_map[j])] / 32768.f;
224 vorbis_analysis_wrote( &pv->vd, OGGVORBIS_FRAME_SIZE );
226 /* Try to extract again */
230 /***********************************************************************
232 ***********************************************************************
234 **********************************************************************/
235 int encvorbisWork( hb_work_object_t * w, hb_buffer_t ** buf_in,
236 hb_buffer_t ** buf_out )
238 hb_work_private_t * pv = w->private_data;
241 hb_list_add( pv->list, *buf_in );
244 *buf_out = buf = Encode( w );
248 buf->next = Encode( w );