1 /*****************************************************************************
2 * real.c: Real demuxer.
3 *****************************************************************************
4 * Copyright (C) 2004, 2006-2007 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
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 *****************************************************************************/
25 * Status of this demuxer:
29 * version v3 w/ 14_4/lpcJ is ok.
30 * version v4/5: - atrac3 is ok.
32 * - raac, racp are ok.
33 * - dnet is twisted "The byte order of the data is reversed
34 * from standard AC3" but ok
37 * - ralf is unsupported, but hardly any sample exist.
38 * - mp3 is unsupported, one sample exists...
42 * v3 and v4/5 headers are parsed.
46 /*****************************************************************************
48 *****************************************************************************/
54 #include <vlc_common.h>
55 #include <vlc_plugin.h>
57 #include <vlc_demux.h>
58 #include <vlc_charset.h>
63 /*****************************************************************************
65 *****************************************************************************/
66 static int Open ( vlc_object_t * );
67 static void Close ( vlc_object_t * );
70 set_description( N_("Real demuxer" ) )
71 set_capability( "demux", 50 )
72 set_category( CAT_INPUT )
73 set_subcategory( SUBCAT_INPUT_DEMUX )
74 set_callbacks( Open, Close )
75 add_shortcut( "real" )
79 /*****************************************************************************
81 *****************************************************************************/
95 int i_frame_slice_count;
100 int i_coded_frame_size;
104 block_t **p_subpackets;
105 mtime_t *p_subpackets_timecode;
113 uint32_t i_file_offset;
114 uint32_t i_time_offset;
115 uint32_t i_frame_index;
120 int64_t i_data_offset;
122 uint32_t i_data_packets_count;
123 uint32_t i_data_packets;
124 int64_t i_data_offset_next;
128 int64_t i_our_duration;
133 char* psz_description;
136 real_track_t **track;
139 uint8_t buffer[65536];
143 int64_t i_index_offset;
145 real_index_t *p_index;
148 static int Demux( demux_t * );
149 static int Control( demux_t *, int i_query, va_list args );
152 static void DemuxVideo( demux_t *, real_track_t *tk, mtime_t i_dts, unsigned i_flags );
153 static void DemuxAudio( demux_t *, real_track_t *tk, mtime_t i_pts, unsigned i_flags );
155 static int ControlSeekByte( demux_t *, int64_t i_bytes );
156 static int ControlSeekTime( demux_t *, mtime_t i_time );
158 static int HeaderRead( demux_t *p_demux );
159 static int CodecParse( demux_t *p_demux, int i_len, int i_num );
161 static void RVoid( const uint8_t **pp_data, int *pi_data, int i_size );
162 static int RLength( const uint8_t **pp_data, int *pi_data );
163 static uint8_t R8( const uint8_t **pp_data, int *pi_data );
164 static uint16_t R16( const uint8_t **pp_data, int *pi_data );
165 static uint32_t R32( const uint8_t **pp_data, int *pi_data );
167 /*****************************************************************************
169 *****************************************************************************/
170 static int Open( vlc_object_t *p_this )
172 demux_t *p_demux = (demux_t*)p_this;
175 const uint8_t *p_peek;
176 bool b_real_audio = false;
178 if( stream_Peek( p_demux->s, &p_peek, 10 ) < 10 )
182 if( !memcmp( p_peek, ".ra", 3 ) )
184 msg_Err( p_demux, ".ra files unsuported" );
187 /* Real Media Format */
188 else if( memcmp( p_peek, ".RMF", 4 ) )
193 /* Fill p_demux field */
194 p_demux->pf_demux = Demux;
195 p_demux->pf_control = Control;
197 p_demux->p_sys = p_sys = calloc( 1, sizeof( *p_sys ) );
201 p_sys->i_data_offset = 0;
204 p_sys->i_pcr = VLC_TS_INVALID;
206 p_sys->b_seek = false;
207 p_sys->b_real_audio = b_real_audio;
209 /* Parse the headers */
210 /* Real Audio files */
213 CodecParse( p_demux, 32, 0 ); /* At least 32 */
214 return VLC_EGENERIC; /* We don't know how to read
215 correctly the data yet */
218 else if( HeaderRead( p_demux ) )
220 msg_Err( p_demux, "invalid header" );
228 /*****************************************************************************
230 *****************************************************************************/
231 static void Close( vlc_object_t *p_this )
233 demux_t *p_demux = (demux_t*)p_this;
234 demux_sys_t *p_sys = p_demux->p_sys;
236 for( int i = 0; i < p_sys->i_track; i++ )
238 real_track_t *tk = p_sys->track[i];
240 es_format_Clean( &tk->fmt );
243 block_Release( tk->p_frame );
245 for( int j = 0; j < tk->i_subpackets; j++ )
247 if( tk->p_subpackets[ j ] )
248 block_Release( tk->p_subpackets[ j ] );
250 if( tk->i_subpackets )
252 free( tk->p_subpackets );
253 free( tk->p_subpackets_timecode );
257 if( p_sys->i_track > 0 )
258 free( p_sys->track );
260 free( p_sys->psz_title );
261 free( p_sys->psz_artist );
262 free( p_sys->psz_copyright );
263 free( p_sys->psz_description );
264 free( p_sys->p_index );
270 /*****************************************************************************
272 *****************************************************************************/
273 static int Demux( demux_t *p_demux )
275 demux_sys_t *p_sys = p_demux->p_sys;
278 if( p_sys->i_data_packets >= p_sys->i_data_packets_count &&
279 p_sys->i_data_packets_count )
281 if( stream_Read( p_demux->s, header, 18 ) < 18 )
284 if( memcmp( header, "DATA", 4 ) )
287 p_sys->i_data_offset = stream_Tell( p_demux->s ) - 18;
288 p_sys->i_data_size = GetDWBE( &header[4] );
289 p_sys->i_data_packets_count = GetDWBE( &header[10] );
290 p_sys->i_data_packets = 0;
291 p_sys->i_data_offset_next = GetDWBE( &header[14] );
293 msg_Dbg( p_demux, "entering new DATA packets=%d next=%u",
294 p_sys->i_data_packets_count,
295 (unsigned int)p_sys->i_data_offset_next );
298 /* Read Packet Header */
299 if( stream_Read( p_demux->s, header, 12 ) < 12 )
301 //const int i_version = GetWBE( &header[0] );
302 const size_t i_size = GetWBE( &header[2] ) - 12;
303 const int i_id = GetWBE( &header[4] );
304 const int64_t i_pts = VLC_TS_0 + 1000 * GetDWBE( &header[6] );
305 const int i_flags= header[11]; /* flags 0x02 -> keyframe */
307 p_sys->i_data_packets++;
308 if( i_size > sizeof(p_sys->buffer) )
310 msg_Err( p_demux, "Got a NUKK size to read. (Invalid format?)" );
314 p_sys->i_buffer = stream_Read( p_demux->s, p_sys->buffer, i_size );
315 if( p_sys->i_buffer < i_size )
318 real_track_t *tk = NULL;
319 for( int i = 0; i < p_sys->i_track; i++ )
321 if( p_sys->track[i]->i_id == i_id )
322 tk = p_sys->track[i];
327 msg_Warn( p_demux, "unknown track id(0x%x)", i_id );
331 if( tk->fmt.i_cat == VIDEO_ES )
333 DemuxVideo( p_demux, tk, i_pts, i_flags );
337 assert( tk->fmt.i_cat == AUDIO_ES );
338 DemuxAudio( p_demux, tk, i_pts, i_flags );
342 mtime_t i_pcr = VLC_TS_INVALID;
343 for( int i = 0; i < p_sys->i_track; i++ )
345 real_track_t *tk = p_sys->track[i];
347 if( i_pcr <= VLC_TS_INVALID || ( tk->i_last_dts > VLC_TS_INVALID && tk->i_last_dts < i_pcr ) )
348 i_pcr = tk->i_last_dts;
350 if( i_pcr > VLC_TS_INVALID && i_pcr != p_sys->i_pcr )
352 p_sys->i_pcr = i_pcr;
353 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr );
358 /*****************************************************************************
360 *****************************************************************************/
361 static int Control( demux_t *p_demux, int i_query, va_list args )
363 demux_sys_t *p_sys = p_demux->p_sys;
370 case DEMUX_GET_POSITION:
371 pf = (double*) va_arg( args, double* );
373 /* read stream size maybe failed in rtsp streaming,
374 so use duration to determin the position at first */
375 if( p_sys->i_our_duration > 0 )
377 if( p_sys->i_pcr > VLC_TS_INVALID )
378 *pf = (double)p_sys->i_pcr / 1000.0 / p_sys->i_our_duration;
384 i64 = stream_Size( p_demux->s );
386 *pf = (double)1.0*stream_Tell( p_demux->s ) / (double)i64;
392 pi64 = (int64_t*)va_arg( args, int64_t * );
394 if( p_sys->i_our_duration > 0 )
396 *pi64 = p_sys->i_pcr > VLC_TS_INVALID ? p_sys->i_pcr : 0;
400 /* same as GET_POSTION */
401 i64 = stream_Size( p_demux->s );
402 if( p_sys->i_our_duration > 0 && i64 > 0 )
404 *pi64 = (int64_t)( 1000.0 * p_sys->i_our_duration * stream_Tell( p_demux->s ) / i64 );
411 case DEMUX_SET_POSITION:
412 f = (double) va_arg( args, double );
413 i64 = (int64_t) ( stream_Size( p_demux->s ) * f );
415 if( !p_sys->p_index && i64 != 0 )
418 msg_Err( p_demux,"Seek No Index Real File failed!" );
419 return VLC_EGENERIC; // no index!
423 /* it is a rtsp stream , it is specials in access/rtsp/... */
424 msg_Dbg(p_demux, "Seek in real rtsp stream!");
425 p_sys->i_pcr = VLC_TS_0 + INT64_C(1000) * ( p_sys->i_our_duration * f );
426 p_sys->b_seek = true;
427 return stream_Seek( p_demux->s, p_sys->i_pcr - VLC_TS_0 );
429 return ControlSeekByte( p_demux, i64 );
432 if( !p_sys->p_index )
435 i64 = (int64_t) va_arg( args, int64_t );
436 return ControlSeekTime( p_demux, i64 );
438 case DEMUX_GET_LENGTH:
439 pi64 = (int64_t*)va_arg( args, int64_t * );
441 if( p_sys->i_our_duration <= 0 )
447 /* our stored duration is in ms, so... */
448 *pi64 = INT64_C(1000) * p_sys->i_our_duration;
453 vlc_meta_t *p_meta = (vlc_meta_t*)va_arg( args, vlc_meta_t* );
455 /* the core will crash if we provide NULL strings, so check
456 * every string first */
457 if( p_sys->psz_title )
458 vlc_meta_SetTitle( p_meta, p_sys->psz_title );
459 if( p_sys->psz_artist )
460 vlc_meta_SetArtist( p_meta, p_sys->psz_artist );
461 if( p_sys->psz_copyright )
462 vlc_meta_SetCopyright( p_meta, p_sys->psz_copyright );
463 if( p_sys->psz_description )
464 vlc_meta_SetDescription( p_meta, p_sys->psz_description );
475 /*****************************************************************************
477 *****************************************************************************/
478 static void CheckPcr( demux_t *p_demux, real_track_t *tk, mtime_t i_dts )
480 demux_sys_t *p_sys = p_demux->p_sys;
482 if( i_dts > VLC_TS_INVALID )
483 tk->i_last_dts = i_dts;
485 if( p_sys->i_pcr > VLC_TS_INVALID || i_dts <= VLC_TS_INVALID )
488 p_sys->i_pcr = i_dts;
489 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr );
492 static void DemuxVideo( demux_t *p_demux, real_track_t *tk, mtime_t i_dts, unsigned i_flags )
494 demux_sys_t *p_sys = p_demux->p_sys;
496 const uint8_t *p_data = p_sys->buffer;
497 int i_data = p_sys->i_buffer;
501 uint8_t i_hdr = R8( &p_data, &i_data );
502 uint8_t i_type = i_hdr >> 6;
511 R8( &p_data, &i_data );
518 else if( i_type == 3 )
520 i_len = RLength( &p_data, &i_data );
521 i_pos = RLength( &p_data, &i_data );
522 i_frame_num = R8( &p_data, &i_data );
528 assert( i_type == 0 || i_type == 2 );
529 i_seq = R8( &p_data, &i_data );
530 i_len = RLength( &p_data, &i_data );
532 i_pos = RLength( &p_data, &i_data );
533 i_frame_num = R8( &p_data, &i_data );
536 if( (i_seq & 0x7f) == 1 || tk->i_frame_num != i_frame_num )
538 tk->i_frame_slice = 0;
539 tk->i_frame_slice_count = 2 * (i_hdr & 0x3f) + 1;
540 tk->i_frame_pos = 2*4 * tk->i_frame_slice_count + 1;
541 tk->i_frame_size = i_len + 2*4 * tk->i_frame_slice_count + 1;
542 tk->i_frame_num = i_frame_num;
545 block_Release( tk->p_frame );
547 tk->p_frame = block_New( p_demux, tk->i_frame_size );
550 tk->i_frame_size = 0;
554 tk->p_frame->i_dts = i_dts;
555 tk->p_frame->i_pts = VLC_TS_INVALID;
557 tk->p_frame->i_flags |= BLOCK_FLAG_TYPE_I;
559 i_dts = VLC_TS_INVALID;
565 i_frame_data = i_len;
569 i_frame_data = i_data;
570 if( i_type == 2 && i_frame_data > i_pos )
571 i_frame_data = i_pos;
573 if( i_frame_data > i_data )
578 if( tk->i_frame_slice > tk->i_frame_slice_count || !tk->p_frame )
582 SetDWLE( &tk->p_frame->p_buffer[2*4*(tk->i_frame_slice-1) + 1 + 0], 1 );
583 SetDWLE( &tk->p_frame->p_buffer[2*4*(tk->i_frame_slice-1) + 1 + 4], tk->i_frame_pos - (2*4 * tk->i_frame_slice_count + 1) );
585 if( tk->i_frame_pos + i_frame_data > tk->i_frame_size )
588 memcpy( &tk->p_frame->p_buffer[tk->i_frame_pos], p_data, i_frame_data );
589 RVoid( &p_data, &i_data, i_frame_data );
590 tk->i_frame_pos += i_frame_data;
592 if( i_type != 0 || tk->i_frame_pos >= tk->i_frame_size )
594 /* Fix the buffer once the real number of slice is known */
595 tk->p_frame->p_buffer[0] = tk->i_frame_slice - 1;
596 tk->p_frame->i_buffer = tk->i_frame_pos - 2*4*( tk->i_frame_slice_count - tk->i_frame_slice );
598 memmove( &tk->p_frame->p_buffer[1+2*4*tk->i_frame_slice ],
599 &tk->p_frame->p_buffer[1+2*4*tk->i_frame_slice_count],
600 tk->i_frame_pos - (2*4*tk->i_frame_slice_count + 1) );
603 CheckPcr( p_demux, tk, tk->p_frame->i_dts );
604 es_out_Send( p_demux->out, tk->p_es, tk->p_frame );
606 tk->i_frame_size = 0;
612 static void DemuxAudioMethod1( demux_t *p_demux, real_track_t *tk, mtime_t i_pts, unsigned int i_flags )
614 demux_sys_t *p_sys = p_demux->p_sys;
615 uint8_t *p_buf = p_sys->buffer;
618 if( (i_flags & 2) || p_sys->b_seek )
621 tk->i_out_subpacket = 0;
622 p_sys->b_seek = false;
625 if( tk->fmt.i_codec == VLC_FOURCC( 'c', 'o', 'o', 'k' ) ||
626 tk->fmt.i_codec == VLC_FOURCC( 'a', 't', 'r', 'c' ) ||
627 tk->fmt.i_codec == VLC_FOURCC( 's', 'i', 'p', 'r' ) )
629 const int i_num = tk->i_frame_size / tk->i_subpacket_size;
630 const int y = tk->i_subpacket / ( tk->i_frame_size / tk->i_subpacket_size );
632 for( int i = 0; i < i_num; i++ )
634 block_t *p_block = block_New( p_demux, tk->i_subpacket_size );
637 if( &p_buf[tk->i_subpacket_size] > &p_sys->buffer[p_sys->i_buffer] )
640 memcpy( p_block->p_buffer, p_buf, tk->i_subpacket_size );
642 p_block->i_pts = VLC_TS_INVALID;
644 p_buf += tk->i_subpacket_size;
646 int i_index = tk->i_subpacket_h * i +
647 ((tk->i_subpacket_h + 1) / 2) * (y&1) + (y>>1);
649 if( tk->p_subpackets[i_index] != NULL )
651 msg_Dbg(p_demux, "p_subpackets[ %d ] not null!", i_index );
652 block_Release( tk->p_subpackets[i_index] );
655 tk->p_subpackets[i_index] = p_block;
656 if( tk->i_subpacket == 0 )
657 tk->p_subpackets_timecode[0] = i_pts;
663 const int y = tk->i_subpacket / (tk->i_subpacket_h / 2);
664 assert( tk->fmt.i_codec == VLC_FOURCC( '2', '8', '_', '8' ) );
666 for( int i = 0; i < tk->i_subpacket_h / 2; i++ )
668 block_t *p_block = block_New( p_demux, tk->i_coded_frame_size);
671 if( &p_buf[tk->i_coded_frame_size] > &p_sys->buffer[p_sys->i_buffer] )
674 int i_index = (i * 2 * tk->i_frame_size / tk->i_coded_frame_size) + y;
676 memcpy( p_block->p_buffer, p_buf, tk->i_coded_frame_size );
678 p_block->i_pts = i_index == 0 ? i_pts : VLC_TS_INVALID;
680 p_buf += tk->i_coded_frame_size;
682 if( tk->p_subpackets[i_index] != NULL )
684 msg_Dbg(p_demux, "p_subpackets[ %d ] not null!", i_index );
685 block_Release( tk->p_subpackets[i_index] );
688 tk->p_subpackets[i_index] = p_block;
693 while( tk->i_out_subpacket != tk->i_subpackets &&
694 tk->p_subpackets[tk->i_out_subpacket] )
696 block_t *p_block = tk->p_subpackets[tk->i_out_subpacket];
697 tk->p_subpackets[tk->i_out_subpacket] = NULL;
699 if( tk->p_subpackets_timecode[tk->i_out_subpacket] )
702 p_block->i_pts = tk->p_subpackets_timecode[tk->i_out_subpacket];
704 tk->p_subpackets_timecode[tk->i_out_subpacket] = 0;
706 tk->i_out_subpacket++;
708 CheckPcr( p_demux, tk, p_block->i_pts );
709 es_out_Send( p_demux->out, tk->p_es, p_block );
712 if( tk->i_subpacket == tk->i_subpackets &&
713 tk->i_out_subpacket != tk->i_subpackets )
715 msg_Warn( p_demux, "i_subpacket != i_out_subpacket, "
716 "this shouldn't happen" );
719 if( tk->i_subpacket == tk->i_subpackets )
722 tk->i_out_subpacket = 0;
725 static void DemuxAudioMethod2( demux_t *p_demux, real_track_t *tk, mtime_t i_pts )
727 demux_sys_t *p_sys = p_demux->p_sys;
729 if( p_sys->i_buffer < 2 )
732 unsigned i_sub = (p_sys->buffer[1] >> 4)&0x0f;
733 if( p_sys->i_buffer < 2+2*i_sub )
736 uint8_t *p_sub = &p_sys->buffer[2+2*i_sub];
738 for( unsigned i = 0; i < i_sub; i++ )
740 const int i_sub_size = GetWBE( &p_sys->buffer[2+i*2] );
741 block_t *p_block = block_New( p_demux, i_sub_size );
745 if( &p_sub[i_sub_size] > &p_sys->buffer[p_sys->i_buffer] )
748 memcpy( p_block->p_buffer, p_sub, i_sub_size );
752 p_block->i_pts = i == 0 ? i_pts : VLC_TS_INVALID;
754 CheckPcr( p_demux, tk, p_block->i_pts );
755 es_out_Send( p_demux->out, tk->p_es, p_block );
758 static void DemuxAudioMethod3( demux_t *p_demux, real_track_t *tk, mtime_t i_pts )
760 demux_sys_t *p_sys = p_demux->p_sys;
762 if( p_sys->i_buffer <= 0 )
765 block_t *p_block = block_New( p_demux, p_sys->i_buffer );
769 if( tk->fmt.i_codec == VLC_FOURCC( 'a', '5', '2', ' ' ) )
771 uint8_t *p_src = p_sys->buffer;
772 uint8_t *p_dst = p_block->p_buffer;
775 while( p_dst < &p_block->p_buffer[p_sys->i_buffer - 1])
785 memcpy( p_block->p_buffer, p_sys->buffer, p_sys->i_buffer );
788 p_block->i_pts = i_pts;
790 CheckPcr( p_demux, tk, p_block->i_pts );
791 es_out_Send( p_demux->out, tk->p_es, p_block );
794 static void DemuxAudio( demux_t *p_demux, real_track_t *tk, mtime_t i_pts, unsigned i_flags )
796 switch( tk->fmt.i_codec )
798 case VLC_FOURCC( 'c', 'o', 'o', 'k' ):
799 case VLC_FOURCC( 'a', 't', 'r', 'c' ):
800 case VLC_FOURCC( 's', 'i', 'p', 'r' ):
801 case VLC_FOURCC( '2', '8', '_', '8' ):
802 DemuxAudioMethod1( p_demux, tk, i_pts, i_flags );
804 case VLC_FOURCC( 'm','p','4','a' ):
805 DemuxAudioMethod2( p_demux, tk, i_pts );
808 DemuxAudioMethod3( p_demux, tk, i_pts );
813 /*****************************************************************************
814 * Helpers: seek/control
815 *****************************************************************************/
816 static int ControlGoToIndex( demux_t *p_demux, real_index_t *p_index )
818 demux_sys_t *p_sys = p_demux->p_sys;
820 p_sys->b_seek = true;
821 p_sys->i_pcr = INT64_C(1000) * p_index->i_time_offset;
822 for( int i = 0; i < p_sys->i_track; i++ )
823 p_sys->track[i]->i_last_dts = 0;
824 return stream_Seek( p_demux->s, p_index->i_file_offset );
826 static int ControlSeekTime( demux_t *p_demux, mtime_t i_time )
828 demux_sys_t *p_sys = p_demux->p_sys;
829 real_index_t *p_index = p_sys->p_index;
831 while( p_index->i_file_offset != 0 )
833 if( p_index->i_time_offset * INT64_C(1000) > i_time )
835 if( p_index != p_sys->p_index )
841 if( p_index->i_file_offset == 0 )
843 return ControlGoToIndex( p_demux, p_index );
845 static int ControlSeekByte( demux_t *p_demux, int64_t i_bytes )
847 demux_sys_t *p_sys = p_demux->p_sys;
848 real_index_t *p_index = p_sys->p_index;
850 while( p_index->i_file_offset != 0 )
852 if( p_index->i_file_offset > i_bytes )
854 if( p_index != p_sys->p_index )
860 if( p_index->i_file_offset == 0 )
862 return ControlGoToIndex( p_demux, p_index );
865 /*****************************************************************************
866 * Helpers: header reading
867 *****************************************************************************/
870 * This function will read a pascal string with size stored in 2 bytes from
873 * FIXME what is the right charset ?
875 static char *StreamReadString2( stream_t *s )
879 if( stream_Read( s, p_tmp, 2 ) < 2 )
882 const int i_length = GetWBE( p_tmp );
886 char *psz_string = calloc( 1, i_length + 1 );
888 stream_Read( s, psz_string, i_length ); /* Valid even if !psz_string */
891 EnsureUTF8( psz_string );
896 * This function will read a pascal string with size stored in 1 byte from a
899 * FIXME what is the right charset ?
901 static char *MemoryReadString1( const uint8_t **pp_data, int *pi_data )
903 const uint8_t *p_data = *pp_data;
904 int i_data = *pi_data;
906 char *psz_string = NULL;
911 int i_length = *p_data++; i_data--;
912 if( i_length > i_data )
917 psz_string = strndup( (const char*)p_data, i_length );
919 EnsureUTF8( psz_string );
932 * This function parses(skip) the .RMF identification chunk.
934 static int HeaderRMF( demux_t *p_demux )
938 if( stream_Read( p_demux->s, p_buffer, 8 ) < 8 )
941 msg_Dbg( p_demux, " - file version=0x%x num headers=%d",
942 GetDWBE( &p_buffer[0] ), GetDWBE( &p_buffer[4] ) );
946 * This function parses the PROP properties chunk.
948 static int HeaderPROP( demux_t *p_demux )
950 demux_sys_t *p_sys = p_demux->p_sys;
952 uint8_t p_buffer[40];
955 if( stream_Read( p_demux->s, p_buffer, 40 ) < 40 )
958 msg_Dbg( p_demux, " - max bitrate=%d avg bitrate=%d",
959 GetDWBE(&p_buffer[0]), GetDWBE(&p_buffer[4]) );
960 msg_Dbg( p_demux, " - max packet size=%d avg bitrate=%d",
961 GetDWBE(&p_buffer[8]), GetDWBE(&p_buffer[12]) );
962 msg_Dbg( p_demux, " - packets count=%d", GetDWBE(&p_buffer[16]) );
963 msg_Dbg( p_demux, " - duration=%d ms", GetDWBE(&p_buffer[20]) );
964 msg_Dbg( p_demux, " - preroll=%d ms", GetDWBE(&p_buffer[24]) );
965 msg_Dbg( p_demux, " - index offset=%d", GetDWBE(&p_buffer[28]) );
966 msg_Dbg( p_demux, " - data offset=%d", GetDWBE(&p_buffer[32]) );
967 msg_Dbg( p_demux, " - num streams=%d", GetWBE(&p_buffer[36]) );
969 /* set the duration for export in control */
970 p_sys->i_our_duration = GetDWBE(&p_buffer[20]);
972 p_sys->i_index_offset = GetDWBE(&p_buffer[28]);
974 i_flags = GetWBE(&p_buffer[38]);
975 msg_Dbg( p_demux, " - flags=0x%x %s%s%s",
977 i_flags&0x0001 ? "PN_SAVE_ENABLED " : "",
978 i_flags&0x0002 ? "PN_PERFECT_PLAY_ENABLED " : "",
979 i_flags&0x0004 ? "PN_LIVE_BROADCAST" : "" );
984 * This functions parses the CONT commentairs chunk.
986 static int HeaderCONT( demux_t *p_demux )
988 demux_sys_t *p_sys = p_demux->p_sys;
991 p_sys->psz_title = StreamReadString2( p_demux->s );
992 if( p_sys->psz_title )
993 msg_Dbg( p_demux, " - title=`%s'", p_sys->psz_title );
996 p_sys->psz_artist = StreamReadString2( p_demux->s );
997 if( p_sys->psz_artist )
998 msg_Dbg( p_demux, " - artist=`%s'", p_sys->psz_artist );
1001 p_sys->psz_copyright = StreamReadString2( p_demux->s );
1002 if( p_sys->psz_copyright )
1003 msg_Dbg( p_demux, " - copyright=`%s'", p_sys->psz_copyright );
1006 p_sys->psz_description = StreamReadString2( p_demux->s );
1007 if( p_sys->psz_description )
1008 msg_Dbg( p_demux, " - comment=`%s'", p_sys->psz_description );
1013 * This function parses the MDPR (Media properties) chunk.
1015 static int HeaderMDPR( demux_t *p_demux )
1017 uint8_t p_buffer[30];
1019 if( stream_Read( p_demux->s, p_buffer, 30 ) < 30 )
1020 return VLC_EGENERIC;
1022 const int i_num = GetWBE( &p_buffer[0] );
1023 msg_Dbg( p_demux, " - id=0x%x", i_num );
1024 msg_Dbg( p_demux, " - max bitrate=%d avg bitrate=%d",
1025 GetDWBE(&p_buffer[2]), GetDWBE(&p_buffer[6]) );
1026 msg_Dbg( p_demux, " - max packet size=%d avg packet size=%d",
1027 GetDWBE(&p_buffer[10]), GetDWBE(&p_buffer[14]) );
1028 msg_Dbg( p_demux, " - start time=%d", GetDWBE(&p_buffer[18]) );
1029 msg_Dbg( p_demux, " - preroll=%d", GetDWBE(&p_buffer[22]) );
1030 msg_Dbg( p_demux, " - duration=%d", GetDWBE(&p_buffer[26]) );
1033 const uint8_t *p_peek;
1034 int i_peek_org = stream_Peek( p_demux->s, &p_peek, 2 * 256 );
1035 int i_peek = i_peek_org;
1037 return VLC_EGENERIC;
1039 char *psz_name = MemoryReadString1( &p_peek, &i_peek );
1042 msg_Dbg( p_demux, " - name=`%s'", psz_name );
1045 char *psz_mime = MemoryReadString1( &p_peek, &i_peek );
1048 msg_Dbg( p_demux, " - mime=`%s'", psz_mime );
1051 const int i_skip = i_peek_org - i_peek;
1052 if( i_skip > 0 && stream_Read( p_demux->s, NULL, i_skip ) < i_skip )
1053 return VLC_EGENERIC;
1056 if( stream_Read( p_demux->s, p_buffer, 4 ) < 4 )
1057 return VLC_EGENERIC;
1059 const uint32_t i_size = GetDWBE( p_buffer );
1062 CodecParse( p_demux, i_size, i_num );
1063 unsigned size = stream_Read( p_demux->s, NULL, i_size );
1065 return VLC_EGENERIC;
1070 * This function parses DATA chunk (it contains the actual movie data).
1072 static int HeaderDATA( demux_t *p_demux, uint32_t i_size )
1074 demux_sys_t *p_sys = p_demux->p_sys;
1075 uint8_t p_buffer[8];
1077 if( stream_Read( p_demux->s, p_buffer, 8 ) < 8 )
1078 return VLC_EGENERIC;
1080 p_sys->i_data_offset = stream_Tell( p_demux->s ) - 10;
1081 p_sys->i_data_size = i_size;
1082 p_sys->i_data_packets_count = GetDWBE( p_buffer );
1083 p_sys->i_data_packets = 0;
1084 p_sys->i_data_offset_next = GetDWBE( &p_buffer[4] );
1086 msg_Dbg( p_demux, " - packets count=%d next=%u",
1087 p_sys->i_data_packets_count,
1088 (unsigned int)p_sys->i_data_offset_next );
1092 * This function parses the INDX (movie index chunk).
1093 * It is optional but seeking without it is ... hard.
1095 static void HeaderINDX( demux_t *p_demux )
1097 demux_sys_t *p_sys = p_demux->p_sys;
1100 uint32_t i_index_count;
1102 if( p_sys->i_index_offset == 0 )
1105 stream_Seek( p_demux->s, p_sys->i_index_offset );
1107 if( stream_Read( p_demux->s, buffer, 20 ) < 20 )
1110 const uint32_t i_id = VLC_FOURCC( buffer[0], buffer[1], buffer[2], buffer[3] );
1111 const uint32_t i_size = GetDWBE( &buffer[4] );
1112 int i_version = GetWBE( &buffer[8] );
1114 msg_Dbg( p_demux, "Real index %4.4s size=%d version=%d",
1115 (char*)&i_id, i_size, i_version );
1117 if( (i_size < 20) && (i_id != VLC_FOURCC('I','N','D','X')) )
1120 i_index_count = GetDWBE( &buffer[10] );
1122 msg_Dbg( p_demux, "Real Index : num : %d ", i_index_count );
1124 if( i_index_count >= ( 0xffffffff / sizeof(*p_sys->p_index) ) )
1127 if( GetDWBE( &buffer[16] ) > 0 )
1128 msg_Dbg( p_demux, "Real Index: Does next index exist? %d ",
1129 GetDWBE( &buffer[16] ) );
1131 /* One extra entry is allocated (that MUST be set to 0) to identify the
1133 * TODO add a clean entry count (easier to build index on the fly) */
1134 p_sys->p_index = calloc( i_index_count + 1, sizeof(*p_sys->p_index) );
1135 if( !p_sys->p_index )
1138 for( unsigned int i = 0; i < i_index_count; i++ )
1140 uint8_t p_entry[14];
1142 if( stream_Read( p_demux->s, p_entry, 14 ) < 14 )
1145 if( GetWBE( &p_entry[0] ) != 0 )
1147 msg_Dbg( p_demux, "Real Index: invaild version of index entry %d ",
1148 GetWBE( &p_entry[0] ) );
1152 real_index_t *p_idx = &p_sys->p_index[i];
1154 p_idx->i_time_offset = GetDWBE( &p_entry[2] );
1155 p_idx->i_file_offset = GetDWBE( &p_entry[6] );
1156 p_idx->i_frame_index = GetDWBE( &p_entry[10] );
1160 "Real Index: time %"PRIu32" file %"PRIu32" frame %"PRIu32,
1161 p_idx->i_time_offset,
1162 p_idx->i_file_offset,
1163 p_idx->i_frame_index );
1170 * This function parses the complete RM headers and move the
1171 * stream pointer to the data to be read.
1173 static int HeaderRead( demux_t *p_demux )
1175 demux_sys_t *p_sys = p_demux->p_sys;
1179 const int64_t i_stream_position = stream_Tell( p_demux->s );
1180 uint8_t header[100]; /* FIXME */
1182 /* Read the header */
1183 if( stream_Read( p_demux->s, header, 10 ) < 10 )
1184 return VLC_EGENERIC;
1186 const uint32_t i_id = VLC_FOURCC( header[0], header[1],
1187 header[2], header[3] );
1188 const uint32_t i_size = GetDWBE( &header[4] );
1189 const int i_version = GetWBE( &header[8] );
1191 msg_Dbg( p_demux, "object %4.4s size=%d version=%d",
1192 (char*)&i_id, i_size, i_version );
1195 if( i_size < 10 && i_id != VLC_FOURCC('D','A','T','A') )
1197 msg_Dbg( p_demux, "invalid size for object %4.4s", (char*)&i_id );
1198 return VLC_EGENERIC;
1204 case VLC_FOURCC('.','R','M','F'):
1205 i_ret = HeaderRMF( p_demux );
1207 case VLC_FOURCC('P','R','O','P'):
1208 i_ret = HeaderPROP( p_demux );
1210 case VLC_FOURCC('C','O','N','T'):
1211 i_ret = HeaderCONT( p_demux );
1213 case VLC_FOURCC('M','D','P','R'):
1214 i_ret = HeaderMDPR( p_demux );
1216 case VLC_FOURCC('D','A','T','A'):
1217 i_ret = HeaderDATA( p_demux, i_size );
1221 msg_Dbg( p_demux, "unknown chunk" );
1222 i_ret = VLC_SUCCESS;
1228 if( i_id == VLC_FOURCC('D','A','T','A') ) /* In this case, parsing is finished */
1231 /* Skip unread data */
1232 const int64_t i_stream_current = stream_Tell( p_demux->s );
1233 const int64_t i_stream_skip = (i_stream_position + i_size) - i_stream_current;
1235 if( i_stream_skip > 0 )
1237 if( stream_Read( p_demux->s, NULL, i_stream_skip ) != i_stream_skip )
1238 return VLC_EGENERIC;
1240 else if( i_stream_skip < 0 )
1242 return VLC_EGENERIC;
1246 /* read index if possible */
1247 if( p_sys->i_index_offset > 0 )
1249 const int64_t i_position = stream_Tell( p_demux->s );
1251 HeaderINDX( p_demux );
1253 if( stream_Seek( p_demux->s, i_position ) )
1254 return VLC_EGENERIC;
1259 static void CodecMetaRead( demux_t *p_demux, const uint8_t **pp_data, int *pi_data )
1261 demux_sys_t *p_sys = p_demux->p_sys;
1264 p_sys->psz_title = MemoryReadString1( pp_data, pi_data );
1265 if( p_sys->psz_title )
1266 msg_Dbg( p_demux, " - title=`%s'", p_sys->psz_title );
1269 p_sys->psz_artist = MemoryReadString1( pp_data, pi_data );
1270 if( p_sys->psz_artist )
1271 msg_Dbg( p_demux, " - artist=`%s'", p_sys->psz_artist );
1274 p_sys->psz_copyright = MemoryReadString1( pp_data, pi_data );
1275 if( p_sys->psz_copyright )
1276 msg_Dbg( p_demux, " - copyright=`%s'", p_sys->psz_copyright );
1279 p_sys->psz_description = MemoryReadString1( pp_data, pi_data );
1280 if( p_sys->psz_description )
1281 msg_Dbg( p_demux, " - Comment=`%s'", p_sys->psz_description );
1284 static int CodecVideoParse( demux_t *p_demux, int i_tk_id, const uint8_t *p_data, int i_data )
1286 demux_sys_t *p_sys = p_demux->p_sys;
1289 return VLC_EGENERIC;
1293 es_format_Init( &fmt, VIDEO_ES,
1294 VLC_FOURCC( p_data[8], p_data[9], p_data[10], p_data[11] ) );
1295 fmt.video.i_width = GetWBE( &p_data[12] );
1296 fmt.video.i_height= GetWBE( &p_data[14] );
1297 fmt.video.i_frame_rate = (GetWBE( &p_data[22] ) << 16) | GetWBE( &p_data[24] );
1298 fmt.video.i_frame_rate_base = 1 << 16;
1301 fmt.p_extra = malloc( 8 );
1305 memcpy( fmt.p_extra, &p_data[26], 8 );
1307 //msg_Dbg( p_demux, " - video 0x%08x 0x%08x", dw0, dw1 );
1310 switch( GetDWBE( &p_data[30] ) )
1314 fmt.i_codec = VLC_FOURCC( 'R','V','1','3' );
1320 fmt.i_codec = VLC_FOURCC( 'R','V','2','0' );
1323 fmt.i_codec = VLC_FOURCC( 'R','V','3','0' );
1326 fmt.i_codec = VLC_FOURCC( 'R','V','4','0' );
1329 msg_Dbg( p_demux, " - video %4.4s %dx%d - %8.8x",
1330 (char*)&fmt.i_codec, fmt.video.i_width, fmt.video.i_height, GetDWBE( &p_data[30] ) );
1332 real_track_t *tk = malloc( sizeof( *tk ) );
1335 es_format_Clean( &fmt );
1338 tk->i_out_subpacket = 0;
1339 tk->i_subpacket = 0;
1340 tk->i_subpackets = 0;
1341 tk->p_subpackets = NULL;
1342 tk->p_subpackets_timecode = NULL;
1345 tk->i_frame_num = -1;
1346 tk->i_frame_size = 0;
1349 tk->p_es = es_out_Add( p_demux->out, &fmt );
1351 TAB_APPEND( p_sys->i_track, p_sys->track, tk );
1354 static int CodecAudioParse( demux_t *p_demux, int i_tk_id, const uint8_t *p_data, int i_data )
1356 demux_sys_t *p_sys = p_demux->p_sys;
1360 return VLC_EGENERIC;
1363 int i_coded_frame_size = 0;
1364 int i_subpacket_h = 0;
1365 int i_frame_size = 0;
1366 int i_subpacket_size = 0;
1368 int i_version = GetWBE( &p_data[4] );
1369 int i_extra_codec = 0;
1371 msg_Dbg( p_demux, " - audio version=%d", i_version );
1373 es_format_Init( &fmt, AUDIO_ES, 0 );
1375 RVoid( &p_data, &i_data, 6 ); /* 4 + version */
1376 if( i_version == 3 ) /* RMF version 3 or .ra version 3 */
1378 RVoid( &p_data, &i_data, 2 + 10 + 4 );
1381 CodecMetaRead( p_demux, &p_data, &i_data );
1383 RVoid( &p_data, &i_data, 1 + 1 );
1385 memcpy( &fmt.i_codec, p_data, 4 );
1386 RVoid( &p_data, &i_data, 4 );
1388 fmt.audio.i_channels = 1; /* This is always the case in rm3 */
1389 fmt.audio.i_rate = 8000;
1391 msg_Dbg( p_demux, " - audio codec=%4.4s channels=%d rate=%dHz",
1392 (char*)&fmt.i_codec, fmt.audio.i_channels, fmt.audio.i_rate );
1394 else /* RMF version 4/5 or .ra version 4 */
1396 RVoid( &p_data, &i_data, 2 + 4 + 4 + 2 + 4 );
1397 i_flavor = R16( &p_data, &i_data );
1398 i_coded_frame_size = R32( &p_data, &i_data );
1399 RVoid( &p_data, &i_data, 4 + 4 + 4 );
1400 i_subpacket_h = R16( &p_data, &i_data );
1401 i_frame_size = R16( &p_data, &i_data );
1402 i_subpacket_size = R16( &p_data, &i_data );
1403 if( !i_frame_size || !i_coded_frame_size )
1404 return VLC_EGENERIC;
1406 RVoid( &p_data, &i_data, 2 + (i_version == 5 ? 6 : 0 ) );
1408 fmt.audio.i_rate = R16( &p_data, &i_data );
1409 RVoid( &p_data, &i_data, 2 );
1410 fmt.audio.i_bitspersample = R16( &p_data, &i_data );
1411 fmt.audio.i_channels = R16( &p_data, &i_data );
1412 fmt.audio.i_blockalign = i_frame_size;
1414 if( i_version == 5 )
1418 memcpy( p_genr, &p_data[0], 4 );
1419 memcpy( &fmt.i_codec, &p_data[4], 4 );
1421 RVoid( &p_data, &i_data, 8 );
1423 else /* version 4 */
1426 RVoid( &p_data, &i_data, 1 + *p_data );
1427 if( i_data >= 1 + 4 )
1428 memcpy( &fmt.i_codec, &p_data[1], 4 );
1430 RVoid( &p_data, &i_data, 1 + *p_data );
1433 msg_Dbg( p_demux, " - audio codec=%4.4s channels=%d rate=%dHz",
1434 (char*)&fmt.i_codec, fmt.audio.i_channels, fmt.audio.i_rate );
1436 RVoid( &p_data, &i_data, 3 );
1438 if( p_sys->b_real_audio )
1440 CodecMetaRead( p_demux, &p_data, &i_data );
1444 if( i_version == 5 )
1445 RVoid( &p_data, &i_data, 1 );
1446 i_extra_codec = R32( &p_data, &i_data );
1450 switch( fmt.i_codec )
1452 case VLC_FOURCC('l','p','c','J'):
1453 fmt.i_codec = VLC_FOURCC( '1','4','_','4' );
1454 case VLC_FOURCC('1','4','_','4'):
1455 fmt.audio.i_blockalign = 0x14 ;
1458 case VLC_FOURCC('2','8','_','8'):
1459 fmt.audio.i_blockalign = i_coded_frame_size;
1462 case VLC_FOURCC( 'd','n','e','t' ):
1463 fmt.i_codec = VLC_FOURCC( 'a','5','2',' ' );
1466 case VLC_FOURCC( 'r','a','a','c' ):
1467 case VLC_FOURCC( 'r','a','c','p' ):
1468 fmt.i_codec = VLC_FOURCC( 'm','p','4','a' );
1470 if( i_extra_codec > 0 )
1473 RVoid( &p_data, &i_data, 1 );
1475 if( i_extra_codec > 0 )
1477 fmt.p_extra = malloc( i_extra_codec );
1478 if( !fmt.p_extra || i_extra_codec > i_data )
1481 fmt.i_extra = i_extra_codec;
1482 memcpy( fmt.p_extra, p_data, fmt.i_extra );
1486 case VLC_FOURCC('s','i','p','r'):
1487 fmt.audio.i_flavor = i_flavor;
1488 case VLC_FOURCC('c','o','o','k'):
1489 case VLC_FOURCC('a','t','r','c'):
1490 if( i_subpacket_size <= 0 ||
1491 i_frame_size / i_subpacket_size <= 0 )
1493 es_format_Clean( &fmt );
1494 return VLC_EGENERIC;
1496 if( !memcmp( p_genr, "genr", 4 ) )
1497 fmt.audio.i_blockalign = i_subpacket_size;
1499 fmt.audio.i_blockalign = i_coded_frame_size;
1501 if( i_extra_codec > 0 )
1503 fmt.p_extra = malloc( i_extra_codec );
1504 if( !fmt.p_extra || i_extra_codec > i_data )
1507 fmt.i_extra = i_extra_codec;
1508 memcpy( fmt.p_extra, p_data, fmt.i_extra );
1513 case VLC_FOURCC('r','a','l','f'):
1514 msg_Dbg( p_demux, " - audio codec not supported=%4.4s",
1515 (char*)&fmt.i_codec );
1519 msg_Dbg( p_demux, " - unknown audio codec=%4.4s",
1520 (char*)&fmt.i_codec );
1523 msg_Dbg( p_demux, " - extra data=%d", fmt.i_extra );
1526 real_track_t *tk = malloc( sizeof( *tk ) );
1529 es_format_Clean( &fmt );
1534 tk->i_frame_size = 0;
1537 tk->i_subpacket_h = i_subpacket_h;
1538 tk->i_subpacket_size = i_subpacket_size;
1539 tk->i_coded_frame_size = i_coded_frame_size;
1540 tk->i_frame_size = i_frame_size;
1542 tk->i_out_subpacket = 0;
1543 tk->i_subpacket = 0;
1544 tk->i_subpackets = 0;
1545 tk->p_subpackets = NULL;
1546 tk->p_subpackets_timecode = NULL;
1547 if( fmt.i_codec == VLC_FOURCC('c','o','o','k') ||
1548 fmt.i_codec == VLC_FOURCC('a','t','r','c') ||
1549 fmt.i_codec == VLC_FOURCC('s','i','p','r') )
1552 i_subpacket_h * i_frame_size / tk->i_subpacket_size;
1554 calloc( tk->i_subpackets, sizeof(block_t *) );
1555 tk->p_subpackets_timecode =
1556 calloc( tk->i_subpackets , sizeof( int64_t ) );
1558 else if( fmt.i_codec == VLC_FOURCC('2','8','_','8') )
1561 i_subpacket_h * i_frame_size / tk->i_coded_frame_size;
1563 calloc( tk->i_subpackets, sizeof(block_t *) );
1564 tk->p_subpackets_timecode =
1565 calloc( tk->i_subpackets , sizeof( int64_t ) );
1568 /* Check if the calloc went correctly */
1569 if( tk->i_subpacket > 0 && ( !tk->p_subpackets || !tk->p_subpackets_timecode ) )
1571 free( tk->p_subpackets_timecode );
1572 free( tk->p_subpackets );
1574 msg_Err( p_demux, "Can't alloc subpacket" );
1575 return VLC_EGENERIC;
1579 tk->p_es = es_out_Add( p_demux->out, &fmt );
1581 TAB_APPEND( p_sys->i_track, p_sys->track, tk );
1587 static int CodecParse( demux_t *p_demux, int i_len, int i_num )
1589 const uint8_t *p_peek;
1591 msg_Dbg( p_demux, " - specific data len=%d", i_len );
1592 if( stream_Peek( p_demux->s, &p_peek, i_len ) < i_len )
1593 return VLC_EGENERIC;
1595 if( i_len >= 8 && !memcmp( &p_peek[4], "VIDO", 4 ) )
1597 return CodecVideoParse( p_demux, i_num, p_peek, i_len );
1599 else if( i_len >= 4 && !memcmp( &p_peek[0], ".ra\xfd", 4 ) )
1601 return CodecAudioParse( p_demux, i_num, p_peek, i_len );
1606 /*****************************************************************************
1607 * Helpers: memory buffer fct.
1608 *****************************************************************************/
1609 static void RVoid( const uint8_t **pp_data, int *pi_data, int i_size )
1611 if( i_size > *pi_data )
1617 #define RX(name, type, size, code ) \
1618 static type name( const uint8_t **pp_data, int *pi_data ) { \
1619 if( *pi_data < (size) ) \
1622 RVoid( pp_data, pi_data, size ); \
1625 RX(R8, uint8_t, 1, **pp_data )
1626 RX(R16, uint16_t, 2, GetWBE( *pp_data ) )
1627 RX(R32, uint32_t, 4, GetDWBE( *pp_data ) )
1628 static int RLength( const uint8_t **pp_data, int *pi_data )
1630 const int v0 = R16( pp_data, pi_data ) & 0x7FFF;
1633 return (v0 << 16) | R16( pp_data, pi_data );