1 /*****************************************************************************
2 * vorbis.c: vorbis decoder/encoder/packetizer module making use of libvorbis.
3 *****************************************************************************
4 * Copyright (C) 2001-2003 the VideoLAN team
7 * Authors: Gildas Bazin <gbazin@videolan.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
28 #include <vlc_codec.h>
30 #include <vlc_input.h>
35 #ifdef MODULE_NAME_IS_tremor
36 #include <tremor/ivorbiscodec.h>
39 #include <vorbis/codec.h>
42 #ifdef HAVE_VORBIS_VORBISENC_H
43 # include <vorbis/vorbisenc.h>
44 # ifndef OV_ECTL_RATEMANAGE_AVG
45 # define OV_ECTL_RATEMANAGE_AVG 0x0
51 /*****************************************************************************
52 * decoder_sys_t : vorbis decoder descriptor
53 *****************************************************************************/
57 vlc_bool_t b_packetizer;
67 vorbis_info vi; /* struct that stores all the static vorbis bitstream
69 vorbis_comment vc; /* struct that stores all the bitstream user
71 vorbis_dsp_state vd; /* central working state for the packet->PCM
73 vorbis_block vb; /* local working space for packet->PCM decode */
78 audio_date_t end_date;
79 int i_last_block_size;
84 int pi_chan_table[AOUT_CHAN_MAX];
87 static int pi_channels_maps[7] =
91 AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
92 AOUT_CHAN_CENTER | AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
93 AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT
94 | AOUT_CHAN_REARRIGHT,
95 AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
96 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT,
97 AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
98 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE
102 ** channel order as defined in http://www.ogghelp.com/ogg/glossary.cfm#Audio_Channels
105 /* recommended vorbis channel order for 6 channels */
106 static const uint32_t pi_6channels_in[] =
107 { AOUT_CHAN_LEFT, AOUT_CHAN_CENTER, AOUT_CHAN_RIGHT,
108 AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,AOUT_CHAN_LFE,0 };
110 /* recommended vorbis channel order for 4 channels */
111 static const uint32_t pi_4channels_in[] =
112 { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT, AOUT_CHAN_CENTER, AOUT_CHAN_LFE, 0 };
114 /* recommended vorbis channel order for 3 channels */
115 static const uint32_t pi_3channels_in[] =
116 { AOUT_CHAN_LEFT, AOUT_CHAN_CENTER, AOUT_CHAN_RIGHT, 0 };
118 /* our internal channel order (WG-4 order) */
119 static const uint32_t pi_channels_out[] =
120 { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT, AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
121 AOUT_CHAN_CENTER, AOUT_CHAN_LFE, 0 };
123 /****************************************************************************
125 ****************************************************************************/
126 static int OpenDecoder ( vlc_object_t * );
127 static int OpenPacketizer( vlc_object_t * );
128 static void CloseDecoder ( vlc_object_t * );
129 static void *DecodeBlock ( decoder_t *, block_t ** );
131 static int ProcessHeaders( decoder_t * );
132 static void *ProcessPacket ( decoder_t *, ogg_packet *, block_t ** );
134 static aout_buffer_t *DecodePacket ( decoder_t *, ogg_packet * );
135 static block_t *SendPacket( decoder_t *, ogg_packet *, block_t * );
137 static void ParseVorbisComments( decoder_t * );
139 static void ConfigureChannelOrder(int *, int, uint32_t, vlc_bool_t );
141 #ifdef MODULE_NAME_IS_tremor
142 static void Interleave ( int32_t *, const int32_t **, int, int, int * );
144 static void Interleave ( float *, const float **, int, int, int * );
147 #ifndef MODULE_NAME_IS_tremor
148 static int OpenEncoder ( vlc_object_t * );
149 static void CloseEncoder ( vlc_object_t * );
150 static block_t *Encode ( encoder_t *, aout_buffer_t * );
153 /*****************************************************************************
155 *****************************************************************************/
156 #define ENC_QUALITY_TEXT N_("Encoding quality")
157 #define ENC_QUALITY_LONGTEXT N_( \
158 "Enforce a quality between 1 (low) and 10 (high), instead " \
159 "of specifying a particular bitrate. This will produce a VBR stream." )
160 #define ENC_MAXBR_TEXT N_("Maximum encoding bitrate")
161 #define ENC_MAXBR_LONGTEXT N_( \
162 "Maximum bitrate in kbps. This is useful for streaming applications." )
163 #define ENC_MINBR_TEXT N_("Minimum encoding bitrate")
164 #define ENC_MINBR_LONGTEXT N_( \
165 "Minimum bitrate in kbps. This is useful for encoding for a fixed-size channel." )
166 #define ENC_CBR_TEXT N_("CBR encoding")
167 #define ENC_CBR_LONGTEXT N_( \
168 "Force a constant bitrate encoding (CBR)." )
171 set_shortname( "Vorbis" );
172 set_description( _("Vorbis audio decoder") );
173 #ifdef MODULE_NAME_IS_tremor
174 set_capability( "decoder", 90 );
176 set_capability( "decoder", 100 );
178 set_category( CAT_INPUT );
179 set_subcategory( SUBCAT_INPUT_ACODEC );
180 set_callbacks( OpenDecoder, CloseDecoder );
183 set_description( _("Vorbis audio packetizer") );
184 set_capability( "packetizer", 100 );
185 set_callbacks( OpenPacketizer, CloseDecoder );
187 #ifndef MODULE_NAME_IS_tremor
188 # define ENC_CFG_PREFIX "sout-vorbis-"
190 set_description( _("Vorbis audio encoder") );
191 set_capability( "encoder", 100 );
192 #if defined(HAVE_VORBIS_VORBISENC_H)
193 set_callbacks( OpenEncoder, CloseEncoder );
196 add_integer( ENC_CFG_PREFIX "quality", 0, NULL, ENC_QUALITY_TEXT,
197 ENC_QUALITY_LONGTEXT, VLC_FALSE );
198 add_integer( ENC_CFG_PREFIX "max-bitrate", 0, NULL, ENC_MAXBR_TEXT,
199 ENC_MAXBR_LONGTEXT, VLC_FALSE );
200 add_integer( ENC_CFG_PREFIX "min-bitrate", 0, NULL, ENC_MINBR_TEXT,
201 ENC_MINBR_LONGTEXT, VLC_FALSE );
202 add_bool( ENC_CFG_PREFIX "cbr", 0, NULL, ENC_CBR_TEXT,
203 ENC_CBR_LONGTEXT, VLC_FALSE );
208 #ifndef MODULE_NAME_IS_tremor
209 static const char *ppsz_enc_options[] = {
210 "quality", "max-bitrate", "min-bitrate", "cbr", NULL
214 /*****************************************************************************
215 * OpenDecoder: probe the decoder and return score
216 *****************************************************************************/
217 static int OpenDecoder( vlc_object_t *p_this )
219 decoder_t *p_dec = (decoder_t*)p_this;
220 decoder_sys_t *p_sys;
222 if( p_dec->fmt_in.i_codec != VLC_FOURCC('v','o','r','b') )
227 /* Allocate the memory needed to store the decoder's structure */
228 if( ( p_dec->p_sys = p_sys =
229 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
231 msg_Err( p_dec, "out of memory" );
236 aout_DateSet( &p_sys->end_date, 0 );
237 p_sys->i_last_block_size = 0;
238 p_sys->b_packetizer = VLC_FALSE;
239 p_sys->i_headers = 0;
241 /* Take care of vorbis init */
242 vorbis_info_init( &p_sys->vi );
243 vorbis_comment_init( &p_sys->vc );
245 /* Set output properties */
246 p_dec->fmt_out.i_cat = AUDIO_ES;
247 #ifdef MODULE_NAME_IS_tremor
248 p_dec->fmt_out.i_codec = VLC_FOURCC('f','i','3','2');
250 p_dec->fmt_out.i_codec = VLC_FOURCC('f','l','3','2');
254 p_dec->pf_decode_audio = (aout_buffer_t *(*)(decoder_t *, block_t **))
256 p_dec->pf_packetize = (block_t *(*)(decoder_t *, block_t **))
262 static int OpenPacketizer( vlc_object_t *p_this )
264 decoder_t *p_dec = (decoder_t*)p_this;
266 int i_ret = OpenDecoder( p_this );
268 if( i_ret == VLC_SUCCESS )
270 p_dec->p_sys->b_packetizer = VLC_TRUE;
271 p_dec->fmt_out.i_codec = VLC_FOURCC('v','o','r','b');
277 /****************************************************************************
278 * DecodeBlock: the whole thing
279 ****************************************************************************
280 * This function must be fed with ogg packets.
281 ****************************************************************************/
282 static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
284 decoder_sys_t *p_sys = p_dec->p_sys;
285 ogg_packet oggpacket;
287 if( !pp_block ) return NULL;
291 /* Block to Ogg packet */
292 oggpacket.packet = (*pp_block)->p_buffer;
293 oggpacket.bytes = (*pp_block)->i_buffer;
297 if( p_sys->b_packetizer ) return NULL;
299 /* Block to Ogg packet */
300 oggpacket.packet = NULL;
304 oggpacket.granulepos = -1;
307 oggpacket.packetno = 0;
309 /* Check for headers */
310 if( p_sys->i_headers == 0 && p_dec->fmt_in.i_extra )
312 /* Headers already available as extra data */
313 msg_Dbg( p_dec, "headers already available as extra data" );
314 p_sys->i_headers = 3;
316 else if( oggpacket.bytes && p_sys->i_headers < 3 )
318 /* Backup headers as extra data */
321 p_dec->fmt_in.p_extra =
322 realloc( p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra +
323 oggpacket.bytes + 2 );
324 p_extra = (uint8_t *)p_dec->fmt_in.p_extra + p_dec->fmt_in.i_extra;
325 *(p_extra++) = oggpacket.bytes >> 8;
326 *(p_extra++) = oggpacket.bytes & 0xFF;
328 memcpy( p_extra, oggpacket.packet, oggpacket.bytes );
329 p_dec->fmt_in.i_extra += oggpacket.bytes + 2;
331 block_Release( *pp_block );
336 if( p_sys->i_headers == 3 )
338 if( ProcessHeaders( p_dec ) != VLC_SUCCESS )
340 p_sys->i_headers = 0;
341 p_dec->fmt_in.i_extra = 0;
342 block_Release( *pp_block );
345 else p_sys->i_headers++;
348 return ProcessPacket( p_dec, &oggpacket, pp_block );
351 /*****************************************************************************
352 * ProcessHeaders: process Vorbis headers.
353 *****************************************************************************/
354 static int ProcessHeaders( decoder_t *p_dec )
356 decoder_sys_t *p_sys = p_dec->p_sys;
357 ogg_packet oggpacket;
361 if( !p_dec->fmt_in.i_extra ) return VLC_EGENERIC;
363 oggpacket.granulepos = -1;
364 oggpacket.b_o_s = 1; /* yes this actually is a b_o_s packet :) */
366 oggpacket.packetno = 0;
367 p_extra = p_dec->fmt_in.p_extra;
368 i_extra = p_dec->fmt_in.i_extra;
370 /* Take care of the initial Vorbis header */
371 oggpacket.bytes = *(p_extra++) << 8;
372 oggpacket.bytes |= (*(p_extra++) & 0xFF);
373 oggpacket.packet = p_extra;
374 p_extra += oggpacket.bytes;
375 i_extra -= (oggpacket.bytes + 2);
378 msg_Err( p_dec, "header data corrupted");
382 if( vorbis_synthesis_headerin( &p_sys->vi, &p_sys->vc, &oggpacket ) < 0 )
384 msg_Err( p_dec, "this bitstream does not contain Vorbis audio data");
388 /* Setup the format */
389 p_dec->fmt_out.audio.i_rate = p_sys->vi.rate;
390 p_dec->fmt_out.audio.i_channels = p_sys->vi.channels;
392 if( p_dec->fmt_out.audio.i_channels < 0 ||
393 p_dec->fmt_out.audio.i_channels > 6 )
395 msg_Err( p_dec, "invalid number of channels (not between 1 and 6): %i",
396 p_dec->fmt_out.audio.i_channels );
400 p_dec->fmt_out.audio.i_physical_channels =
401 p_dec->fmt_out.audio.i_original_channels =
402 pi_channels_maps[p_sys->vi.channels];
403 p_dec->fmt_out.i_bitrate = p_sys->vi.bitrate_nominal;
405 aout_DateInit( &p_sys->end_date, p_sys->vi.rate );
406 aout_DateSet( &p_sys->end_date, 0 );
408 msg_Dbg( p_dec, "channels:%d samplerate:%ld bitrate:%ld",
409 p_sys->vi.channels, p_sys->vi.rate, p_sys->vi.bitrate_nominal );
411 /* The next packet in order is the comments header */
413 oggpacket.bytes = *(p_extra++) << 8;
414 oggpacket.bytes |= (*(p_extra++) & 0xFF);
415 oggpacket.packet = p_extra;
416 p_extra += oggpacket.bytes;
417 i_extra -= (oggpacket.bytes + 2);
420 msg_Err( p_dec, "header data corrupted");
424 if( vorbis_synthesis_headerin( &p_sys->vi, &p_sys->vc, &oggpacket ) < 0 )
426 msg_Err( p_dec, "2nd Vorbis header is corrupted" );
429 ParseVorbisComments( p_dec );
431 /* The next packet in order is the codebooks header
432 * We need to watch out that this packet is not missing as a
433 * missing or corrupted header is fatal. */
434 oggpacket.bytes = *(p_extra++) << 8;
435 oggpacket.bytes |= (*(p_extra++) & 0xFF);
436 oggpacket.packet = p_extra;
437 i_extra -= (oggpacket.bytes + 2);
440 msg_Err( p_dec, "header data corrupted");
444 if( vorbis_synthesis_headerin( &p_sys->vi, &p_sys->vc, &oggpacket ) < 0 )
446 msg_Err( p_dec, "3rd Vorbis header is corrupted" );
450 if( !p_sys->b_packetizer )
452 /* Initialize the Vorbis packet->PCM decoder */
453 vorbis_synthesis_init( &p_sys->vd, &p_sys->vi );
454 vorbis_block_init( &p_sys->vd, &p_sys->vb );
458 p_dec->fmt_out.i_extra = p_dec->fmt_in.i_extra;
459 p_dec->fmt_out.p_extra =
460 realloc( p_dec->fmt_out.p_extra, p_dec->fmt_out.i_extra );
461 memcpy( p_dec->fmt_out.p_extra,
462 p_dec->fmt_in.p_extra, p_dec->fmt_out.i_extra );
465 ConfigureChannelOrder(p_sys->pi_chan_table, p_sys->vi.channels,
466 p_dec->fmt_out.audio.i_physical_channels, VLC_TRUE);
471 /*****************************************************************************
472 * ProcessPacket: processes a Vorbis packet.
473 *****************************************************************************/
474 static void *ProcessPacket( decoder_t *p_dec, ogg_packet *p_oggpacket,
477 decoder_sys_t *p_sys = p_dec->p_sys;
478 block_t *p_block = *pp_block;
480 /* Date management */
481 if( p_block && p_block->i_pts > 0 &&
482 p_block->i_pts != aout_DateGet( &p_sys->end_date ) )
484 aout_DateSet( &p_sys->end_date, p_block->i_pts );
487 if( !aout_DateGet( &p_sys->end_date ) )
489 /* We've just started the stream, wait for the first PTS. */
490 if( p_block ) block_Release( p_block );
494 *pp_block = NULL; /* To avoid being fed the same packet again */
496 if( p_sys->b_packetizer )
498 return SendPacket( p_dec, p_oggpacket, p_block );
502 aout_buffer_t *p_aout_buffer;
504 if( p_sys->i_headers >= 3 )
505 p_aout_buffer = DecodePacket( p_dec, p_oggpacket );
507 p_aout_buffer = NULL;
509 if( p_block ) block_Release( p_block );
510 return p_aout_buffer;
514 /*****************************************************************************
515 * DecodePacket: decodes a Vorbis packet.
516 *****************************************************************************/
517 static aout_buffer_t *DecodePacket( decoder_t *p_dec, ogg_packet *p_oggpacket )
519 decoder_sys_t *p_sys = p_dec->p_sys;
522 #ifdef MODULE_NAME_IS_tremor
528 if( p_oggpacket->bytes &&
529 #ifdef MODULE_NAME_IS_tremor
530 vorbis_synthesis( &p_sys->vb, p_oggpacket, 1 ) == 0 )
532 vorbis_synthesis( &p_sys->vb, p_oggpacket ) == 0 )
534 vorbis_synthesis_blockin( &p_sys->vd, &p_sys->vb );
536 /* **pp_pcm is a multichannel float vector. In stereo, for
537 * example, pp_pcm[0] is left, and pp_pcm[1] is right. i_samples is
538 * the size of each channel. Convert the float values
539 * (-1.<=range<=1.) to whatever PCM format and write it out */
541 if( ( i_samples = vorbis_synthesis_pcmout( &p_sys->vd, &pp_pcm ) ) > 0 )
544 aout_buffer_t *p_aout_buffer;
547 p_dec->pf_aout_buffer_new( p_dec, i_samples );
549 if( p_aout_buffer == NULL ) return NULL;
551 /* Interleave the samples */
552 #ifdef MODULE_NAME_IS_tremor
553 Interleave( (int32_t *)p_aout_buffer->p_buffer,
554 (const int32_t **)pp_pcm, p_sys->vi.channels, i_samples, p_sys->pi_chan_table);
556 Interleave( (float *)p_aout_buffer->p_buffer,
557 (const float **)pp_pcm, p_sys->vi.channels, i_samples, p_sys->pi_chan_table);
560 /* Tell libvorbis how many samples we actually consumed */
561 vorbis_synthesis_read( &p_sys->vd, i_samples );
563 /* Date management */
564 p_aout_buffer->start_date = aout_DateGet( &p_sys->end_date );
565 p_aout_buffer->end_date = aout_DateIncrement( &p_sys->end_date,
567 return p_aout_buffer;
575 /*****************************************************************************
576 * SendPacket: send an ogg dated packet to the stream output.
577 *****************************************************************************/
578 static block_t *SendPacket( decoder_t *p_dec, ogg_packet *p_oggpacket,
581 decoder_sys_t *p_sys = p_dec->p_sys;
582 int i_block_size, i_samples;
584 i_block_size = vorbis_packet_blocksize( &p_sys->vi, p_oggpacket );
585 if( i_block_size < 0 ) i_block_size = 0; /* non audio packet */
586 i_samples = ( p_sys->i_last_block_size + i_block_size ) >> 2;
587 p_sys->i_last_block_size = i_block_size;
589 /* Date management */
590 p_block->i_dts = p_block->i_pts = aout_DateGet( &p_sys->end_date );
592 if( p_sys->i_headers >= 3 )
593 p_block->i_length = aout_DateIncrement( &p_sys->end_date, i_samples ) -
596 p_block->i_length = 0;
601 /*****************************************************************************
602 * ParseVorbisComments: FIXME should be done in demuxer
603 *****************************************************************************/
604 static void ParseVorbisComments( decoder_t *p_dec )
606 input_thread_t *p_input = (input_thread_t *)p_dec->p_parent;
607 char *psz_name, *psz_value, *psz_comment;
608 input_item_t *p_item;
611 if( p_input->i_object_type != VLC_OBJECT_INPUT ) return;
613 p_item = input_GetItem( p_input );
615 while( i < p_dec->p_sys->vc.comments )
617 psz_comment = strdup( p_dec->p_sys->vc.user_comments[i] );
620 msg_Warn( p_dec, "out of memory" );
623 psz_name = psz_comment;
624 psz_value = strchr( psz_comment, '=' );
629 input_Control( p_input, INPUT_ADD_INFO, _("Vorbis comment"),
630 psz_name, psz_value );
631 if( !strcasecmp( psz_name, "artist" ) )
633 if( psz_value && ( *psz_value != '\0' ) )
635 vlc_meta_SetArtist( p_item->p_meta,
637 input_ItemAddInfo( p_item,
638 _(VLC_META_INFO_CAT),
643 else if( !strcasecmp( psz_name, "title" ) )
645 if( psz_value && ( *psz_value != '\0' ) )
647 vlc_meta_SetTitle( p_item->p_meta,
649 p_item->psz_name = strdup( psz_value );
652 else if( !strcasecmp( psz_name, "album" ) )
654 if( psz_value && ( *psz_value != '\0' ) )
656 vlc_meta_SetAlbum( p_item->p_meta,
660 else if( !strcasecmp( psz_name, "musicbrainz_trackid" ) )
662 if( psz_value && ( *psz_value != '\0' ) )
664 vlc_meta_SetTrackID( p_item->p_meta,
669 else if( !strcasecmp( psz_name, "musicbrainz_artistid" ) )
671 if( psz_value && ( *psz_value != '\0' ) )
673 vlc_meta_SetArtistID( p_item->p_meta,
677 else if( !strcasecmp( psz_name, "musicbrainz_albumid" ) )
679 if( psz_value && ( *psz_value != '\0' ) )
681 vlc_meta_SetAlbumID( p_item->p_meta,
688 var_SetInteger( p_input, "item-change", p_item->i_id );
694 /*****************************************************************************
695 * Interleave: helper function to interleave channels
696 *****************************************************************************/
697 static void ConfigureChannelOrder(int *pi_chan_table, int i_channels, uint32_t i_channel_mask, vlc_bool_t b_decode)
699 const uint32_t *pi_channels_in;
704 pi_channels_in = pi_6channels_in;
707 pi_channels_in = pi_4channels_in;
710 pi_channels_in = pi_3channels_in;
715 for( i = 0; i< i_channels; ++i )
717 pi_chan_table[i] = i;
724 aout_CheckChannelReorder( pi_channels_in, pi_channels_out,
725 i_channel_mask & AOUT_CHAN_PHYSMASK,
729 aout_CheckChannelReorder( pi_channels_out, pi_channels_in,
730 i_channel_mask & AOUT_CHAN_PHYSMASK,
735 /*****************************************************************************
736 * Interleave: helper function to interleave channels
737 *****************************************************************************/
738 #ifdef MODULE_NAME_IS_tremor
739 static void Interleave( int32_t *p_out, const int32_t **pp_in,
740 int i_nb_channels, int i_samples, int *pi_chan_table)
744 for ( j = 0; j < i_samples; j++ )
745 for ( i = 0; i < i_nb_channels; i++ )
746 p_out[j * i_nb_channels + pi_chan_table[i]] = pp_in[i][j] * (FIXED32_ONE >> 24);
749 static void Interleave( float *p_out, const float **pp_in,
750 int i_nb_channels, int i_samples, int *pi_chan_table )
754 for ( j = 0; j < i_samples; j++ )
755 for ( i = 0; i < i_nb_channels; i++ )
756 p_out[j * i_nb_channels + pi_chan_table[i]] = pp_in[i][j];
760 /*****************************************************************************
761 * CloseDecoder: vorbis decoder destruction
762 *****************************************************************************/
763 static void CloseDecoder( vlc_object_t *p_this )
765 decoder_t *p_dec = (decoder_t *)p_this;
766 decoder_sys_t *p_sys = p_dec->p_sys;
768 if( !p_sys->b_packetizer && p_sys->i_headers > 3 )
770 vorbis_block_clear( &p_sys->vb );
771 vorbis_dsp_clear( &p_sys->vd );
774 vorbis_comment_clear( &p_sys->vc );
775 vorbis_info_clear( &p_sys->vi ); /* must be called last */
780 #if defined(HAVE_VORBIS_VORBISENC_H) && !defined(MODULE_NAME_IS_tremor)
782 /*****************************************************************************
783 * encoder_sys_t : vorbis encoder descriptor
784 *****************************************************************************/
790 vorbis_info vi; /* struct that stores all the static vorbis bitstream
792 vorbis_comment vc; /* struct that stores all the bitstream user
794 vorbis_dsp_state vd; /* central working state for the packet->PCM
796 vorbis_block vb; /* local working space for packet->PCM decode */
798 int i_last_block_size;
808 ** Channel reordering
810 int pi_chan_table[AOUT_CHAN_MAX];
814 /*****************************************************************************
815 * OpenEncoder: probe the encoder and return score
816 *****************************************************************************/
817 static int OpenEncoder( vlc_object_t *p_this )
819 encoder_t *p_enc = (encoder_t *)p_this;
820 encoder_sys_t *p_sys;
821 int i_quality, i_min_bitrate, i_max_bitrate, i;
822 ogg_packet header[3];
826 if( p_enc->fmt_out.i_codec != VLC_FOURCC('v','o','r','b') &&
832 /* Allocate the memory needed to store the decoder's structure */
833 if( ( p_sys = (encoder_sys_t *)malloc(sizeof(encoder_sys_t)) ) == NULL )
835 msg_Err( p_enc, "out of memory" );
838 p_enc->p_sys = p_sys;
840 p_enc->pf_encode_audio = Encode;
841 p_enc->fmt_in.i_codec = VLC_FOURCC('f','l','3','2');
842 p_enc->fmt_out.i_codec = VLC_FOURCC('v','o','r','b');
844 config_ChainParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
846 var_Get( p_enc, ENC_CFG_PREFIX "quality", &val );
847 i_quality = val.i_int;
848 if( i_quality > 10 ) i_quality = 10;
849 if( i_quality < 0 ) i_quality = 0;
850 var_Get( p_enc, ENC_CFG_PREFIX "cbr", &val );
851 if( val.b_bool ) i_quality = 0;
852 var_Get( p_enc, ENC_CFG_PREFIX "max-bitrate", &val );
853 i_max_bitrate = val.i_int;
854 var_Get( p_enc, ENC_CFG_PREFIX "min-bitrate", &val );
855 i_min_bitrate = val.i_int;
857 /* Initialize vorbis encoder */
858 vorbis_info_init( &p_sys->vi );
863 if( vorbis_encode_setup_vbr( &p_sys->vi,
864 p_enc->fmt_in.audio.i_channels, p_enc->fmt_in.audio.i_rate,
867 vorbis_info_clear( &p_sys->vi );
868 free( p_enc->p_sys );
869 msg_Err( p_enc, "VBR mode initialisation failed" );
873 /* Do we have optional hard quality restrictions? */
874 if( i_max_bitrate > 0 || i_min_bitrate > 0 )
876 struct ovectl_ratemanage_arg ai;
877 vorbis_encode_ctl( &p_sys->vi, OV_ECTL_RATEMANAGE_GET, &ai );
879 ai.bitrate_hard_min = i_min_bitrate;
880 ai.bitrate_hard_max = i_max_bitrate;
881 ai.management_active = 1;
883 vorbis_encode_ctl( &p_sys->vi, OV_ECTL_RATEMANAGE_SET, &ai );
888 /* Turn off management entirely */
889 vorbis_encode_ctl( &p_sys->vi, OV_ECTL_RATEMANAGE_SET, NULL );
894 if( vorbis_encode_setup_managed( &p_sys->vi,
895 p_enc->fmt_in.audio.i_channels, p_enc->fmt_in.audio.i_rate,
896 i_min_bitrate > 0 ? i_min_bitrate * 1000: -1,
897 p_enc->fmt_out.i_bitrate,
898 i_max_bitrate > 0 ? i_max_bitrate * 1000: -1 ) )
900 vorbis_info_clear( &p_sys->vi );
901 msg_Err( p_enc, "CBR mode initialisation failed" );
902 free( p_enc->p_sys );
907 vorbis_encode_setup_init( &p_sys->vi );
910 vorbis_comment_init( &p_sys->vc);
911 vorbis_comment_add_tag( &p_sys->vc, "ENCODER", "VLC media player");
913 /* Set up the analysis state and auxiliary encoding storage */
914 vorbis_analysis_init( &p_sys->vd, &p_sys->vi );
915 vorbis_block_init( &p_sys->vd, &p_sys->vb );
917 /* Create and store headers */
918 vorbis_analysis_headerout( &p_sys->vd, &p_sys->vc,
919 &header[0], &header[1], &header[2]);
920 p_enc->fmt_out.i_extra = 3 * 2 + header[0].bytes +
921 header[1].bytes + header[2].bytes;
922 p_extra = p_enc->fmt_out.p_extra = malloc( p_enc->fmt_out.i_extra );
923 for( i = 0; i < 3; i++ )
925 *(p_extra++) = header[i].bytes >> 8;
926 *(p_extra++) = header[i].bytes & 0xFF;
927 memcpy( p_extra, header[i].packet, header[i].bytes );
928 p_extra += header[i].bytes;
931 p_sys->i_channels = p_enc->fmt_in.audio.i_channels;
932 p_sys->i_last_block_size = 0;
933 p_sys->i_samples_delay = 0;
936 ConfigureChannelOrder(p_sys->pi_chan_table, p_sys->vi.channels,
937 p_enc->fmt_in.audio.i_physical_channels, VLC_TRUE);
942 /****************************************************************************
943 * Encode: the whole thing
944 ****************************************************************************
945 * This function spits out ogg packets.
946 ****************************************************************************/
947 static block_t *Encode( encoder_t *p_enc, aout_buffer_t *p_aout_buf )
949 encoder_sys_t *p_sys = p_enc->p_sys;
950 ogg_packet oggpacket;
951 block_t *p_block, *p_chain = NULL;
956 p_sys->i_pts = p_aout_buf->start_date -
957 (mtime_t)1000000 * (mtime_t)p_sys->i_samples_delay /
958 (mtime_t)p_enc->fmt_in.audio.i_rate;
960 p_sys->i_samples_delay += p_aout_buf->i_nb_samples;
962 buffer = vorbis_analysis_buffer( &p_sys->vd, p_aout_buf->i_nb_samples );
964 /* convert samples to float and uninterleave */
965 for( i = 0; i < p_sys->i_channels; i++ )
967 for( j = 0 ; j < p_aout_buf->i_nb_samples ; j++ )
969 buffer[i][j]= ((float *)p_aout_buf->p_buffer)
970 [j * p_sys->i_channels + p_sys->pi_chan_table[i]];
974 vorbis_analysis_wrote( &p_sys->vd, p_aout_buf->i_nb_samples );
976 while( vorbis_analysis_blockout( &p_sys->vd, &p_sys->vb ) == 1 )
980 vorbis_analysis( &p_sys->vb, NULL );
981 vorbis_bitrate_addblock( &p_sys->vb );
983 while( vorbis_bitrate_flushpacket( &p_sys->vd, &oggpacket ) )
986 p_block = block_New( p_enc, oggpacket.bytes );
987 memcpy( p_block->p_buffer, oggpacket.packet, oggpacket.bytes );
989 i_block_size = vorbis_packet_blocksize( &p_sys->vi, &oggpacket );
991 if( i_block_size < 0 ) i_block_size = 0;
992 i_samples = ( p_sys->i_last_block_size + i_block_size ) >> 2;
993 p_sys->i_last_block_size = i_block_size;
995 p_block->i_length = (mtime_t)1000000 *
996 (mtime_t)i_samples / (mtime_t)p_enc->fmt_in.audio.i_rate;
998 p_block->i_dts = p_block->i_pts = p_sys->i_pts;
1000 p_sys->i_samples_delay -= i_samples;
1003 p_sys->i_pts += p_block->i_length;
1004 block_ChainAppend( &p_chain, p_block );
1011 /*****************************************************************************
1012 * CloseEncoder: vorbis encoder destruction
1013 *****************************************************************************/
1014 static void CloseEncoder( vlc_object_t *p_this )
1016 encoder_t *p_enc = (encoder_t *)p_this;
1017 encoder_sys_t *p_sys = p_enc->p_sys;
1019 vorbis_block_clear( &p_sys->vb );
1020 vorbis_dsp_clear( &p_sys->vd );
1021 vorbis_comment_clear( &p_sys->vc );
1022 vorbis_info_clear( &p_sys->vi ); /* must be called last */
1027 #endif /* HAVE_VORBIS_VORBISENC_H && !MODULE_NAME_IS_tremor */