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;
86 int pi_chan_table[AOUT_CHAN_MAX];
89 static int pi_channels_maps[7] =
93 AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
94 AOUT_CHAN_CENTER | AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
95 AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT
96 | AOUT_CHAN_REARRIGHT,
97 AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
98 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT,
99 AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER
100 | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE
104 ** channel order as defined in http://www.ogghelp.com/ogg/glossary.cfm#Audio_Channels
107 /* recommended vorbis channel order for 6 channels */
108 static const uint32_t pi_6channels_in[] =
109 { AOUT_CHAN_LEFT, AOUT_CHAN_CENTER, AOUT_CHAN_RIGHT,
110 AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,AOUT_CHAN_LFE,0 };
112 /* recommended vorbis channel order for 4 channels */
113 static const uint32_t pi_4channels_in[] =
114 { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT, AOUT_CHAN_CENTER, AOUT_CHAN_LFE, 0 };
116 /* recommended vorbis channel order for 3 channels */
117 static const uint32_t pi_3channels_in[] =
118 { AOUT_CHAN_LEFT, AOUT_CHAN_CENTER, AOUT_CHAN_RIGHT, 0 };
120 /* our internal channel order (WG-4 order) */
121 static const uint32_t pi_channels_out[] =
122 { AOUT_CHAN_LEFT, AOUT_CHAN_RIGHT, AOUT_CHAN_REARLEFT, AOUT_CHAN_REARRIGHT,
123 AOUT_CHAN_CENTER, AOUT_CHAN_LFE, 0 };
125 /****************************************************************************
127 ****************************************************************************/
128 static int OpenDecoder ( vlc_object_t * );
129 static int OpenPacketizer( vlc_object_t * );
130 static void CloseDecoder ( vlc_object_t * );
131 static void *DecodeBlock ( decoder_t *, block_t ** );
133 static int ProcessHeaders( decoder_t * );
134 static void *ProcessPacket ( decoder_t *, ogg_packet *, block_t ** );
136 static aout_buffer_t *DecodePacket ( decoder_t *, ogg_packet * );
137 static block_t *SendPacket( decoder_t *, ogg_packet *, block_t * );
139 static void ParseVorbisComments( decoder_t * );
141 static void ConfigureChannelOrder(int *, int, uint32_t, vlc_bool_t );
143 #ifdef MODULE_NAME_IS_tremor
144 static void Interleave ( int32_t *, const int32_t **, int, int, int * );
146 static void Interleave ( float *, const float **, int, int, int * );
149 #ifndef MODULE_NAME_IS_tremor
150 static int OpenEncoder ( vlc_object_t * );
151 static void CloseEncoder ( vlc_object_t * );
152 static block_t *Encode ( encoder_t *, aout_buffer_t * );
155 /*****************************************************************************
157 *****************************************************************************/
158 #define ENC_QUALITY_TEXT N_("Encoding quality")
159 #define ENC_QUALITY_LONGTEXT N_( \
160 "Enforce a quality between 1 (low) and 10 (high), instead " \
161 "of specifying a particular bitrate. This will produce a VBR stream." )
162 #define ENC_MAXBR_TEXT N_("Maximum encoding bitrate")
163 #define ENC_MAXBR_LONGTEXT N_( \
164 "Maximum bitrate in kbps. This is useful for streaming applications." )
165 #define ENC_MINBR_TEXT N_("Minimum encoding bitrate")
166 #define ENC_MINBR_LONGTEXT N_( \
167 "Minimum bitrate in kbps. This is useful for encoding for a fixed-size channel." )
168 #define ENC_CBR_TEXT N_("CBR encoding")
169 #define ENC_CBR_LONGTEXT N_( \
170 "Force a constant bitrate encoding (CBR)." )
173 set_shortname( "Vorbis" );
174 set_description( _("Vorbis audio decoder") );
175 #ifdef MODULE_NAME_IS_tremor
176 set_capability( "decoder", 90 );
178 set_capability( "decoder", 100 );
180 set_category( CAT_INPUT );
181 set_subcategory( SUBCAT_INPUT_ACODEC );
182 set_callbacks( OpenDecoder, CloseDecoder );
185 set_description( _("Vorbis audio packetizer") );
186 set_capability( "packetizer", 100 );
187 set_callbacks( OpenPacketizer, CloseDecoder );
189 #ifndef MODULE_NAME_IS_tremor
190 # define ENC_CFG_PREFIX "sout-vorbis-"
192 set_description( _("Vorbis audio encoder") );
193 set_capability( "encoder", 100 );
194 #if defined(HAVE_VORBIS_VORBISENC_H)
195 set_callbacks( OpenEncoder, CloseEncoder );
198 add_integer( ENC_CFG_PREFIX "quality", 0, NULL, ENC_QUALITY_TEXT,
199 ENC_QUALITY_LONGTEXT, VLC_FALSE );
200 add_integer( ENC_CFG_PREFIX "max-bitrate", 0, NULL, ENC_MAXBR_TEXT,
201 ENC_MAXBR_LONGTEXT, VLC_FALSE );
202 add_integer( ENC_CFG_PREFIX "min-bitrate", 0, NULL, ENC_MINBR_TEXT,
203 ENC_MINBR_LONGTEXT, VLC_FALSE );
204 add_bool( ENC_CFG_PREFIX "cbr", 0, NULL, ENC_CBR_TEXT,
205 ENC_CBR_LONGTEXT, VLC_FALSE );
210 #ifndef MODULE_NAME_IS_tremor
211 static const char *ppsz_enc_options[] = {
212 "quality", "max-bitrate", "min-bitrate", "cbr", NULL
216 /*****************************************************************************
217 * OpenDecoder: probe the decoder and return score
218 *****************************************************************************/
219 static int OpenDecoder( vlc_object_t *p_this )
221 decoder_t *p_dec = (decoder_t*)p_this;
222 decoder_sys_t *p_sys;
224 if( p_dec->fmt_in.i_codec != VLC_FOURCC('v','o','r','b') )
229 /* Allocate the memory needed to store the decoder's structure */
230 if( ( p_dec->p_sys = p_sys =
231 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
233 msg_Err( p_dec, "out of memory" );
238 aout_DateSet( &p_sys->end_date, 0 );
239 p_sys->i_last_block_size = 0;
240 p_sys->b_packetizer = VLC_FALSE;
241 p_sys->i_headers = 0;
242 p_sys->i_input_rate = INPUT_RATE_DEFAULT;
244 /* Take care of vorbis init */
245 vorbis_info_init( &p_sys->vi );
246 vorbis_comment_init( &p_sys->vc );
248 /* Set output properties */
249 p_dec->fmt_out.i_cat = AUDIO_ES;
250 #ifdef MODULE_NAME_IS_tremor
251 p_dec->fmt_out.i_codec = VLC_FOURCC('f','i','3','2');
253 p_dec->fmt_out.i_codec = VLC_FOURCC('f','l','3','2');
257 p_dec->pf_decode_audio = (aout_buffer_t *(*)(decoder_t *, block_t **))
259 p_dec->pf_packetize = (block_t *(*)(decoder_t *, block_t **))
265 static int OpenPacketizer( vlc_object_t *p_this )
267 decoder_t *p_dec = (decoder_t*)p_this;
269 int i_ret = OpenDecoder( p_this );
271 if( i_ret == VLC_SUCCESS )
273 p_dec->p_sys->b_packetizer = VLC_TRUE;
274 p_dec->fmt_out.i_codec = VLC_FOURCC('v','o','r','b');
280 /****************************************************************************
281 * DecodeBlock: the whole thing
282 ****************************************************************************
283 * This function must be fed with ogg packets.
284 ****************************************************************************/
285 static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
287 decoder_sys_t *p_sys = p_dec->p_sys;
288 ogg_packet oggpacket;
290 if( !pp_block ) return NULL;
294 /* Block to Ogg packet */
295 oggpacket.packet = (*pp_block)->p_buffer;
296 oggpacket.bytes = (*pp_block)->i_buffer;
298 if( (*pp_block)->i_rate > 0 )
299 p_sys->i_input_rate = (*pp_block)->i_rate;
303 if( p_sys->b_packetizer ) return NULL;
305 /* Block to Ogg packet */
306 oggpacket.packet = NULL;
310 oggpacket.granulepos = -1;
313 oggpacket.packetno = 0;
315 /* Check for headers */
316 if( p_sys->i_headers == 0 && p_dec->fmt_in.i_extra )
318 /* Headers already available as extra data */
319 msg_Dbg( p_dec, "headers already available as extra data" );
320 p_sys->i_headers = 3;
322 else if( oggpacket.bytes && p_sys->i_headers < 3 )
324 /* Backup headers as extra data */
327 p_dec->fmt_in.p_extra =
328 realloc( p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra +
329 oggpacket.bytes + 2 );
330 p_extra = (uint8_t *)p_dec->fmt_in.p_extra + p_dec->fmt_in.i_extra;
331 *(p_extra++) = oggpacket.bytes >> 8;
332 *(p_extra++) = oggpacket.bytes & 0xFF;
334 memcpy( p_extra, oggpacket.packet, oggpacket.bytes );
335 p_dec->fmt_in.i_extra += oggpacket.bytes + 2;
337 block_Release( *pp_block );
342 if( p_sys->i_headers == 3 )
344 if( ProcessHeaders( p_dec ) != VLC_SUCCESS )
346 p_sys->i_headers = 0;
347 p_dec->fmt_in.i_extra = 0;
348 block_Release( *pp_block );
351 else p_sys->i_headers++;
354 return ProcessPacket( p_dec, &oggpacket, pp_block );
357 /*****************************************************************************
358 * ProcessHeaders: process Vorbis headers.
359 *****************************************************************************/
360 static int ProcessHeaders( decoder_t *p_dec )
362 decoder_sys_t *p_sys = p_dec->p_sys;
363 ogg_packet oggpacket;
367 if( !p_dec->fmt_in.i_extra ) return VLC_EGENERIC;
369 oggpacket.granulepos = -1;
370 oggpacket.b_o_s = 1; /* yes this actually is a b_o_s packet :) */
372 oggpacket.packetno = 0;
373 p_extra = p_dec->fmt_in.p_extra;
374 i_extra = p_dec->fmt_in.i_extra;
376 /* Take care of the initial Vorbis header */
377 oggpacket.bytes = *(p_extra++) << 8;
378 oggpacket.bytes |= (*(p_extra++) & 0xFF);
379 oggpacket.packet = p_extra;
380 p_extra += oggpacket.bytes;
381 i_extra -= (oggpacket.bytes + 2);
384 msg_Err( p_dec, "header data corrupted");
388 if( vorbis_synthesis_headerin( &p_sys->vi, &p_sys->vc, &oggpacket ) < 0 )
390 msg_Err( p_dec, "this bitstream does not contain Vorbis audio data");
394 /* Setup the format */
395 p_dec->fmt_out.audio.i_rate = p_sys->vi.rate;
396 p_dec->fmt_out.audio.i_channels = p_sys->vi.channels;
398 if( p_dec->fmt_out.audio.i_channels < 0 ||
399 p_dec->fmt_out.audio.i_channels > 6 )
401 msg_Err( p_dec, "invalid number of channels (not between 1 and 6): %i",
402 p_dec->fmt_out.audio.i_channels );
406 p_dec->fmt_out.audio.i_physical_channels =
407 p_dec->fmt_out.audio.i_original_channels =
408 pi_channels_maps[p_sys->vi.channels];
409 p_dec->fmt_out.i_bitrate = p_sys->vi.bitrate_nominal;
411 aout_DateInit( &p_sys->end_date, p_sys->vi.rate );
412 aout_DateSet( &p_sys->end_date, 0 );
414 msg_Dbg( p_dec, "channels:%d samplerate:%ld bitrate:%ld",
415 p_sys->vi.channels, p_sys->vi.rate, p_sys->vi.bitrate_nominal );
417 /* The next packet in order is the comments header */
419 oggpacket.bytes = *(p_extra++) << 8;
420 oggpacket.bytes |= (*(p_extra++) & 0xFF);
421 oggpacket.packet = p_extra;
422 p_extra += oggpacket.bytes;
423 i_extra -= (oggpacket.bytes + 2);
426 msg_Err( p_dec, "header data corrupted");
430 if( vorbis_synthesis_headerin( &p_sys->vi, &p_sys->vc, &oggpacket ) < 0 )
432 msg_Err( p_dec, "2nd Vorbis header is corrupted" );
435 ParseVorbisComments( p_dec );
437 /* The next packet in order is the codebooks header
438 * We need to watch out that this packet is not missing as a
439 * missing or corrupted header is fatal. */
440 oggpacket.bytes = *(p_extra++) << 8;
441 oggpacket.bytes |= (*(p_extra++) & 0xFF);
442 oggpacket.packet = p_extra;
443 i_extra -= (oggpacket.bytes + 2);
446 msg_Err( p_dec, "header data corrupted");
450 if( vorbis_synthesis_headerin( &p_sys->vi, &p_sys->vc, &oggpacket ) < 0 )
452 msg_Err( p_dec, "3rd Vorbis header is corrupted" );
456 if( !p_sys->b_packetizer )
458 /* Initialize the Vorbis packet->PCM decoder */
459 vorbis_synthesis_init( &p_sys->vd, &p_sys->vi );
460 vorbis_block_init( &p_sys->vd, &p_sys->vb );
464 p_dec->fmt_out.i_extra = p_dec->fmt_in.i_extra;
465 p_dec->fmt_out.p_extra =
466 realloc( p_dec->fmt_out.p_extra, p_dec->fmt_out.i_extra );
467 memcpy( p_dec->fmt_out.p_extra,
468 p_dec->fmt_in.p_extra, p_dec->fmt_out.i_extra );
471 ConfigureChannelOrder(p_sys->pi_chan_table, p_sys->vi.channels,
472 p_dec->fmt_out.audio.i_physical_channels, VLC_TRUE);
477 /*****************************************************************************
478 * ProcessPacket: processes a Vorbis packet.
479 *****************************************************************************/
480 static void *ProcessPacket( decoder_t *p_dec, ogg_packet *p_oggpacket,
483 decoder_sys_t *p_sys = p_dec->p_sys;
484 block_t *p_block = *pp_block;
486 /* Date management */
487 if( p_block && p_block->i_pts > 0 &&
488 p_block->i_pts != aout_DateGet( &p_sys->end_date ) )
490 aout_DateSet( &p_sys->end_date, p_block->i_pts );
493 if( !aout_DateGet( &p_sys->end_date ) )
495 /* We've just started the stream, wait for the first PTS. */
496 if( p_block ) block_Release( p_block );
500 *pp_block = NULL; /* To avoid being fed the same packet again */
502 if( p_sys->b_packetizer )
504 return SendPacket( p_dec, p_oggpacket, p_block );
508 aout_buffer_t *p_aout_buffer;
510 if( p_sys->i_headers >= 3 )
511 p_aout_buffer = DecodePacket( p_dec, p_oggpacket );
513 p_aout_buffer = NULL;
515 if( p_block ) block_Release( p_block );
516 return p_aout_buffer;
520 /*****************************************************************************
521 * DecodePacket: decodes a Vorbis packet.
522 *****************************************************************************/
523 static aout_buffer_t *DecodePacket( decoder_t *p_dec, ogg_packet *p_oggpacket )
525 decoder_sys_t *p_sys = p_dec->p_sys;
528 #ifdef MODULE_NAME_IS_tremor
534 if( p_oggpacket->bytes &&
535 #ifdef MODULE_NAME_IS_tremor
536 vorbis_synthesis( &p_sys->vb, p_oggpacket, 1 ) == 0 )
538 vorbis_synthesis( &p_sys->vb, p_oggpacket ) == 0 )
540 vorbis_synthesis_blockin( &p_sys->vd, &p_sys->vb );
542 /* **pp_pcm is a multichannel float vector. In stereo, for
543 * example, pp_pcm[0] is left, and pp_pcm[1] is right. i_samples is
544 * the size of each channel. Convert the float values
545 * (-1.<=range<=1.) to whatever PCM format and write it out */
547 if( ( i_samples = vorbis_synthesis_pcmout( &p_sys->vd, &pp_pcm ) ) > 0 )
550 aout_buffer_t *p_aout_buffer;
553 p_dec->pf_aout_buffer_new( p_dec, i_samples );
555 if( p_aout_buffer == NULL ) return NULL;
557 /* Interleave the samples */
558 #ifdef MODULE_NAME_IS_tremor
559 Interleave( (int32_t *)p_aout_buffer->p_buffer,
560 (const int32_t **)pp_pcm, p_sys->vi.channels, i_samples, p_sys->pi_chan_table);
562 Interleave( (float *)p_aout_buffer->p_buffer,
563 (const float **)pp_pcm, p_sys->vi.channels, i_samples, p_sys->pi_chan_table);
566 /* Tell libvorbis how many samples we actually consumed */
567 vorbis_synthesis_read( &p_sys->vd, i_samples );
569 /* Date management */
570 p_aout_buffer->start_date = aout_DateGet( &p_sys->end_date );
571 p_aout_buffer->end_date = aout_DateIncrement( &p_sys->end_date,
572 i_samples * p_sys->i_input_rate / INPUT_RATE_DEFAULT );
573 return p_aout_buffer;
581 /*****************************************************************************
582 * SendPacket: send an ogg dated packet to the stream output.
583 *****************************************************************************/
584 static block_t *SendPacket( decoder_t *p_dec, ogg_packet *p_oggpacket,
587 decoder_sys_t *p_sys = p_dec->p_sys;
588 int i_block_size, i_samples;
590 i_block_size = vorbis_packet_blocksize( &p_sys->vi, p_oggpacket );
591 if( i_block_size < 0 ) i_block_size = 0; /* non audio packet */
592 i_samples = ( p_sys->i_last_block_size + i_block_size ) >> 2;
593 p_sys->i_last_block_size = i_block_size;
595 /* Date management */
596 p_block->i_dts = p_block->i_pts = aout_DateGet( &p_sys->end_date );
598 if( p_sys->i_headers >= 3 )
599 p_block->i_length = aout_DateIncrement( &p_sys->end_date,
600 i_samples * p_sys->i_input_rate / INPUT_RATE_DEFAULT ) -
603 p_block->i_length = 0;
608 /*****************************************************************************
609 * ParseVorbisComments: FIXME should be done in demuxer
610 *****************************************************************************/
611 static void ParseVorbisComments( decoder_t *p_dec )
613 input_thread_t *p_input = (input_thread_t *)p_dec->p_parent;
614 char *psz_name, *psz_value, *psz_comment;
615 input_item_t *p_item;
618 if( p_input->i_object_type != VLC_OBJECT_INPUT ) return;
620 p_item = input_GetItem( p_input );
622 while( i < p_dec->p_sys->vc.comments )
624 psz_comment = strdup( p_dec->p_sys->vc.user_comments[i] );
627 msg_Warn( p_dec, "out of memory" );
630 psz_name = psz_comment;
631 psz_value = strchr( psz_comment, '=' );
636 input_Control( p_input, INPUT_ADD_INFO, _("Vorbis comment"),
637 psz_name, "%s", psz_value );
638 if( !strcasecmp( psz_name, "artist" ) )
640 if( psz_value && ( *psz_value != '\0' ) )
642 vlc_meta_SetArtist( p_item->p_meta,
644 input_ItemAddInfo( p_item,
645 _(VLC_META_INFO_CAT),
650 else if( !strcasecmp( psz_name, "title" ) )
652 if( psz_value && ( *psz_value != '\0' ) )
654 vlc_meta_SetTitle( p_item->p_meta,
656 p_item->psz_name = strdup( psz_value );
659 else if( !strcasecmp( psz_name, "album" ) )
661 if( psz_value && ( *psz_value != '\0' ) )
663 vlc_meta_SetAlbum( p_item->p_meta,
667 else if( !strcasecmp( psz_name, "musicbrainz_trackid" ) )
669 if( psz_value && ( *psz_value != '\0' ) )
671 vlc_meta_SetTrackID( p_item->p_meta,
676 else if( !strcasecmp( psz_name, "musicbrainz_artistid" ) )
678 if( psz_value && ( *psz_value != '\0' ) )
680 vlc_meta_SetArtistID( p_item->p_meta,
684 else if( !strcasecmp( psz_name, "musicbrainz_albumid" ) )
686 if( psz_value && ( *psz_value != '\0' ) )
688 vlc_meta_SetAlbumID( p_item->p_meta,
695 var_SetInteger( p_input, "item-change", p_item->i_id );
701 /*****************************************************************************
702 * Interleave: helper function to interleave channels
703 *****************************************************************************/
704 static void ConfigureChannelOrder(int *pi_chan_table, int i_channels, uint32_t i_channel_mask, vlc_bool_t b_decode)
706 const uint32_t *pi_channels_in;
711 pi_channels_in = pi_6channels_in;
714 pi_channels_in = pi_4channels_in;
717 pi_channels_in = pi_3channels_in;
722 for( i = 0; i< i_channels; ++i )
724 pi_chan_table[i] = i;
731 aout_CheckChannelReorder( pi_channels_in, pi_channels_out,
732 i_channel_mask & AOUT_CHAN_PHYSMASK,
736 aout_CheckChannelReorder( pi_channels_out, pi_channels_in,
737 i_channel_mask & AOUT_CHAN_PHYSMASK,
742 /*****************************************************************************
743 * Interleave: helper function to interleave channels
744 *****************************************************************************/
745 #ifdef MODULE_NAME_IS_tremor
746 static void Interleave( int32_t *p_out, const int32_t **pp_in,
747 int i_nb_channels, int i_samples, int *pi_chan_table)
751 for ( j = 0; j < i_samples; j++ )
752 for ( i = 0; i < i_nb_channels; i++ )
753 p_out[j * i_nb_channels + pi_chan_table[i]] = pp_in[i][j] * (FIXED32_ONE >> 24);
756 static void Interleave( float *p_out, const float **pp_in,
757 int i_nb_channels, int i_samples, int *pi_chan_table )
761 for ( j = 0; j < i_samples; j++ )
762 for ( i = 0; i < i_nb_channels; i++ )
763 p_out[j * i_nb_channels + pi_chan_table[i]] = pp_in[i][j];
767 /*****************************************************************************
768 * CloseDecoder: vorbis decoder destruction
769 *****************************************************************************/
770 static void CloseDecoder( vlc_object_t *p_this )
772 decoder_t *p_dec = (decoder_t *)p_this;
773 decoder_sys_t *p_sys = p_dec->p_sys;
775 if( !p_sys->b_packetizer && p_sys->i_headers > 3 )
777 vorbis_block_clear( &p_sys->vb );
778 vorbis_dsp_clear( &p_sys->vd );
781 vorbis_comment_clear( &p_sys->vc );
782 vorbis_info_clear( &p_sys->vi ); /* must be called last */
787 #if defined(HAVE_VORBIS_VORBISENC_H) && !defined(MODULE_NAME_IS_tremor)
789 /*****************************************************************************
790 * encoder_sys_t : vorbis encoder descriptor
791 *****************************************************************************/
797 vorbis_info vi; /* struct that stores all the static vorbis bitstream
799 vorbis_comment vc; /* struct that stores all the bitstream user
801 vorbis_dsp_state vd; /* central working state for the packet->PCM
803 vorbis_block vb; /* local working space for packet->PCM decode */
805 int i_last_block_size;
815 ** Channel reordering
817 int pi_chan_table[AOUT_CHAN_MAX];
821 /*****************************************************************************
822 * OpenEncoder: probe the encoder and return score
823 *****************************************************************************/
824 static int OpenEncoder( vlc_object_t *p_this )
826 encoder_t *p_enc = (encoder_t *)p_this;
827 encoder_sys_t *p_sys;
828 int i_quality, i_min_bitrate, i_max_bitrate, i;
829 ogg_packet header[3];
833 if( p_enc->fmt_out.i_codec != VLC_FOURCC('v','o','r','b') &&
839 /* Allocate the memory needed to store the decoder's structure */
840 if( ( p_sys = (encoder_sys_t *)malloc(sizeof(encoder_sys_t)) ) == NULL )
842 msg_Err( p_enc, "out of memory" );
845 p_enc->p_sys = p_sys;
847 p_enc->pf_encode_audio = Encode;
848 p_enc->fmt_in.i_codec = VLC_FOURCC('f','l','3','2');
849 p_enc->fmt_out.i_codec = VLC_FOURCC('v','o','r','b');
851 config_ChainParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
853 var_Get( p_enc, ENC_CFG_PREFIX "quality", &val );
854 i_quality = val.i_int;
855 if( i_quality > 10 ) i_quality = 10;
856 if( i_quality < 0 ) i_quality = 0;
857 var_Get( p_enc, ENC_CFG_PREFIX "cbr", &val );
858 if( val.b_bool ) i_quality = 0;
859 var_Get( p_enc, ENC_CFG_PREFIX "max-bitrate", &val );
860 i_max_bitrate = val.i_int;
861 var_Get( p_enc, ENC_CFG_PREFIX "min-bitrate", &val );
862 i_min_bitrate = val.i_int;
864 /* Initialize vorbis encoder */
865 vorbis_info_init( &p_sys->vi );
870 if( vorbis_encode_setup_vbr( &p_sys->vi,
871 p_enc->fmt_in.audio.i_channels, p_enc->fmt_in.audio.i_rate,
874 vorbis_info_clear( &p_sys->vi );
875 free( p_enc->p_sys );
876 msg_Err( p_enc, "VBR mode initialisation failed" );
880 /* Do we have optional hard quality restrictions? */
881 if( i_max_bitrate > 0 || i_min_bitrate > 0 )
883 struct ovectl_ratemanage_arg ai;
884 vorbis_encode_ctl( &p_sys->vi, OV_ECTL_RATEMANAGE_GET, &ai );
886 ai.bitrate_hard_min = i_min_bitrate;
887 ai.bitrate_hard_max = i_max_bitrate;
888 ai.management_active = 1;
890 vorbis_encode_ctl( &p_sys->vi, OV_ECTL_RATEMANAGE_SET, &ai );
895 /* Turn off management entirely */
896 vorbis_encode_ctl( &p_sys->vi, OV_ECTL_RATEMANAGE_SET, NULL );
901 if( vorbis_encode_setup_managed( &p_sys->vi,
902 p_enc->fmt_in.audio.i_channels, p_enc->fmt_in.audio.i_rate,
903 i_min_bitrate > 0 ? i_min_bitrate * 1000: -1,
904 p_enc->fmt_out.i_bitrate,
905 i_max_bitrate > 0 ? i_max_bitrate * 1000: -1 ) )
907 vorbis_info_clear( &p_sys->vi );
908 msg_Err( p_enc, "CBR mode initialisation failed" );
909 free( p_enc->p_sys );
914 vorbis_encode_setup_init( &p_sys->vi );
917 vorbis_comment_init( &p_sys->vc);
918 vorbis_comment_add_tag( &p_sys->vc, "ENCODER", "VLC media player");
920 /* Set up the analysis state and auxiliary encoding storage */
921 vorbis_analysis_init( &p_sys->vd, &p_sys->vi );
922 vorbis_block_init( &p_sys->vd, &p_sys->vb );
924 /* Create and store headers */
925 vorbis_analysis_headerout( &p_sys->vd, &p_sys->vc,
926 &header[0], &header[1], &header[2]);
927 p_enc->fmt_out.i_extra = 3 * 2 + header[0].bytes +
928 header[1].bytes + header[2].bytes;
929 p_extra = p_enc->fmt_out.p_extra = malloc( p_enc->fmt_out.i_extra );
930 for( i = 0; i < 3; i++ )
932 *(p_extra++) = header[i].bytes >> 8;
933 *(p_extra++) = header[i].bytes & 0xFF;
934 memcpy( p_extra, header[i].packet, header[i].bytes );
935 p_extra += header[i].bytes;
938 p_sys->i_channels = p_enc->fmt_in.audio.i_channels;
939 p_sys->i_last_block_size = 0;
940 p_sys->i_samples_delay = 0;
943 ConfigureChannelOrder(p_sys->pi_chan_table, p_sys->vi.channels,
944 p_enc->fmt_in.audio.i_physical_channels, VLC_TRUE);
949 /****************************************************************************
950 * Encode: the whole thing
951 ****************************************************************************
952 * This function spits out ogg packets.
953 ****************************************************************************/
954 static block_t *Encode( encoder_t *p_enc, aout_buffer_t *p_aout_buf )
956 encoder_sys_t *p_sys = p_enc->p_sys;
957 ogg_packet oggpacket;
958 block_t *p_block, *p_chain = NULL;
963 p_sys->i_pts = p_aout_buf->start_date -
964 (mtime_t)1000000 * (mtime_t)p_sys->i_samples_delay /
965 (mtime_t)p_enc->fmt_in.audio.i_rate;
967 p_sys->i_samples_delay += p_aout_buf->i_nb_samples;
969 buffer = vorbis_analysis_buffer( &p_sys->vd, p_aout_buf->i_nb_samples );
971 /* convert samples to float and uninterleave */
972 for( i = 0; i < p_sys->i_channels; i++ )
974 for( j = 0 ; j < p_aout_buf->i_nb_samples ; j++ )
976 buffer[i][j]= ((float *)p_aout_buf->p_buffer)
977 [j * p_sys->i_channels + p_sys->pi_chan_table[i]];
981 vorbis_analysis_wrote( &p_sys->vd, p_aout_buf->i_nb_samples );
983 while( vorbis_analysis_blockout( &p_sys->vd, &p_sys->vb ) == 1 )
987 vorbis_analysis( &p_sys->vb, NULL );
988 vorbis_bitrate_addblock( &p_sys->vb );
990 while( vorbis_bitrate_flushpacket( &p_sys->vd, &oggpacket ) )
993 p_block = block_New( p_enc, oggpacket.bytes );
994 memcpy( p_block->p_buffer, oggpacket.packet, oggpacket.bytes );
996 i_block_size = vorbis_packet_blocksize( &p_sys->vi, &oggpacket );
998 if( i_block_size < 0 ) i_block_size = 0;
999 i_samples = ( p_sys->i_last_block_size + i_block_size ) >> 2;
1000 p_sys->i_last_block_size = i_block_size;
1002 p_block->i_length = (mtime_t)1000000 *
1003 (mtime_t)i_samples / (mtime_t)p_enc->fmt_in.audio.i_rate;
1005 p_block->i_dts = p_block->i_pts = p_sys->i_pts;
1007 p_sys->i_samples_delay -= i_samples;
1010 p_sys->i_pts += p_block->i_length;
1011 block_ChainAppend( &p_chain, p_block );
1018 /*****************************************************************************
1019 * CloseEncoder: vorbis encoder destruction
1020 *****************************************************************************/
1021 static void CloseEncoder( vlc_object_t *p_this )
1023 encoder_t *p_enc = (encoder_t *)p_this;
1024 encoder_sys_t *p_sys = p_enc->p_sys;
1026 vorbis_block_clear( &p_sys->vb );
1027 vorbis_dsp_clear( &p_sys->vd );
1028 vorbis_comment_clear( &p_sys->vc );
1029 vorbis_info_clear( &p_sys->vi ); /* must be called last */
1034 #endif /* HAVE_VORBIS_VORBISENC_H && !MODULE_NAME_IS_tremor */