1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2005 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 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
28 #include <vlc/input.h>
31 * - complete support (add support for rtjpeg and raw)
32 * - better seek support (to key frame)
33 * - control GET_LENGTH (harder, unless we have an extended header+index)
37 /*****************************************************************************
39 *****************************************************************************/
40 static int Open ( vlc_object_t * );
41 static void Close ( vlc_object_t * );
44 set_category( CAT_INPUT );
45 set_subcategory( SUBCAT_INPUT_DEMUX );
46 set_description( _("Nuv demuxer") );
47 set_capability( "demux2", 145 );
48 set_callbacks( Open, Close );
49 add_shortcut( "nuv" );
52 /*****************************************************************************
54 *****************************************************************************/
55 static int Demux ( demux_t * );
56 static int Control( demux_t *, int, va_list );
64 } demux_index_entry_t;
71 demux_index_entry_t *idx;
75 static void demux_IndexInit( demux_index_t * );
76 static void demux_IndexClean( demux_index_t * );
77 static void demux_IndexAppend( demux_index_t *,
78 int64_t i_time, int64_t i_offset );
79 /* Convert a time into offset */
80 static int64_t demux_IndexConvertTime( demux_index_t *, int64_t i_time );
81 /* Find the nearest offset in the index */
82 static int64_t demux_IndexFindOffset( demux_index_t *, int64_t i_offset );
88 char id[12]; /* "NuppelVideo\0" or "MythTVVideo\0" */
89 char version[5]; /* "x.xx\0" */
96 char i_mode; /* P progressive, I interlaced */
98 double d_aspect; /* 1.0 squared pixel */
101 int i_video_blocks; /* 0 no video, -1 unknown */
105 int i_keyframe_distance;
111 char i_type; /* A: audio, V: video, S: sync; T: test
112 R: Seekpoint (string:RTjjjjjjjj)
113 D: Extra data for codec */
114 char i_compression; /* V: 0 uncompressed
119 A: 0 uncompressed (44100 1-bits, 2ch)
125 N null frame loudless
127 S: B audio and vdeo sync point
128 A audio sync info (timecode == effective
130 V next video sync (timecode == next video
132 S audio,video,text correlation */
133 char i_keyframe; /* 0 keyframe, else no no key frame */
134 uint8_t i_filters; /* 0x01: gauss 5 pixel (8,2,2,2,2)/16
135 0x02: gauss 5 pixel (8,1,1,1,1)/12
136 0x04: cartoon filter */
138 int i_timecode; /* ms */
140 int i_length; /* V,A,T: length of following data
141 S: length of packet correl */
144 /* FIXME Not sure of this one */
148 vlc_fourcc_t i_video_fcc;
150 vlc_fourcc_t i_audio_fcc;
151 int i_audio_sample_rate;
152 int i_audio_bits_per_sample;
153 int i_audio_channels;
154 int i_audio_compression_ratio;
156 int i_rtjpeg_quality;
157 int i_rtjpeg_luma_filter;
158 int i_rtjpeg_chroma_filter;
163 int64_t i_seekable_offset;
164 int64_t i_keyframe_adjust_offset;
171 extended_header_t exh;
174 es_out_id_t *p_es_video;
178 es_out_id_t *p_es_audio;
184 static int HeaderLoad( demux_t *, header_t *h );
185 static int FrameHeaderLoad( demux_t *, frame_header_t *h );
186 static int ExtendedHeaderLoad( demux_t *, extended_header_t *h );
188 /*****************************************************************************
189 * Open: initializes ES structures
190 *****************************************************************************/
191 static int Open( vlc_object_t * p_this )
193 demux_t *p_demux = (demux_t*)p_this;
197 vlc_bool_t b_extended;
200 if( stream_Peek( p_demux->s, &p_peek, 12 ) != 12 ||
201 ( strncmp( (char *)p_peek, "MythTVVideo", 11 ) &&
202 strncmp( (char *)p_peek, "NuppelVideo", 11 ) ) )
205 p_sys = malloc( sizeof( demux_sys_t ) );
206 memset( p_sys, 0, sizeof( demux_sys_t ) );
207 p_sys->p_es_video = NULL;
208 p_sys->p_es_audio = NULL;
209 p_sys->p_extra_f = NULL;
211 demux_IndexInit( &p_sys->idx );
213 if( HeaderLoad( p_demux, &p_sys->hdr ) )
217 if( FrameHeaderLoad( p_demux, &fh ) || fh.i_type != 'D' )
219 if( fh.i_length > 0 )
221 if( fh.i_compression == 'F' )
223 /* ffmpeg extra data */
224 p_sys->i_extra_f = fh.i_length;
225 p_sys->p_extra_f = malloc( fh.i_length );
226 if( stream_Read( p_demux->s,
227 p_sys->p_extra_f, fh.i_length ) != fh.i_length )
232 /* TODO handle rtjpeg */
233 msg_Warn( p_demux, "unsupported 'D' frame (c=%c)", fh.i_compression );
234 if( stream_Read( p_demux->s, NULL, fh.i_length ) != fh.i_length )
239 /* Check and load extented */
240 if( stream_Peek( p_demux->s, &p_peek, 1 ) != 1 )
242 if( p_peek[0] == 'X' )
244 b_extended = VLC_TRUE;
246 if( FrameHeaderLoad( p_demux, &fh ) )
248 if( fh.i_length != 512 )
251 if( ExtendedHeaderLoad( p_demux, &p_sys->exh ) )
257 b_extended = VLC_FALSE;
259 /* XXX: for now only file with extended chunk are supported
260 * why: because else we need to have support for rtjpeg+stupid nuv shit */
261 msg_Err( p_demux, "incomplete NUV support (upload samples)" );
265 /* Create audio/video (will work only with extended header and audio=mp3 */
266 if( p_sys->hdr.i_video_blocks != 0 )
270 es_format_Init( &fmt, VIDEO_ES, p_sys->exh.i_video_fcc );
271 fmt.video.i_width = p_sys->hdr.i_width;
272 fmt.video.i_height = p_sys->hdr.i_height;
273 fmt.i_extra = p_sys->i_extra_f;
274 fmt.p_extra = p_sys->p_extra_f;
276 p_sys->p_es_video = es_out_Add( p_demux->out, &fmt );
278 if( p_sys->hdr.i_audio_blocks != 0 )
282 es_format_Init( &fmt, AUDIO_ES, VLC_FOURCC('m','p','g','a') );
283 fmt.audio.i_rate = p_sys->exh.i_audio_sample_rate;
284 fmt.audio.i_bitspersample = p_sys->exh.i_audio_bits_per_sample;
286 p_sys->p_es_audio = es_out_Add( p_demux->out, &fmt );
288 if( p_sys->hdr.i_text_blocks != 0 )
290 msg_Warn( p_demux, "text not yet supported (upload samples)" );
294 /* Fill p_demux fields */
295 p_demux->pf_demux = Demux;
296 p_demux->pf_control = Control;
297 p_demux->p_sys = p_sys;
302 msg_Warn( p_demux, "cannot load Nuv file" );
307 /*****************************************************************************
308 * Close: frees unused data
309 *****************************************************************************/
310 static void Close( vlc_object_t * p_this )
312 demux_t *p_demux = (demux_t*)p_this;
313 demux_sys_t *p_sys = p_demux->p_sys;
315 if( p_sys->p_extra_f )
316 free( p_sys->p_extra_f );
317 demux_IndexClean( &p_sys->idx );
321 /*****************************************************************************
322 * Demux: reads and demuxes data packets
323 *****************************************************************************
324 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
325 *****************************************************************************/
326 static int Demux( demux_t *p_demux )
328 demux_sys_t *p_sys = p_demux->p_sys;
337 if( FrameHeaderLoad( p_demux, &fh ) )
340 if( fh.i_type == 'A' || fh.i_type == 'V' )
343 /* TODO add support for some block type */
345 if( fh.i_type != 'R' )
347 stream_Read( p_demux->s, NULL, fh.i_length );
352 p_data = stream_Block( p_demux->s, fh.i_length );
353 p_data->i_dts = (int64_t)fh.i_timecode * 1000;
354 p_data->i_pts = (fh.i_type == 'V') ? 0 : p_data->i_dts;
357 demux_IndexAppend( &p_sys->idx, p_data->i_dts, stream_Tell(p_demux->s) );
360 if( p_data->i_dts > p_sys->i_pcr )
362 p_sys->i_pcr = p_data->i_dts;
363 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_pcr );
366 if( fh.i_type == 'A' && p_sys->p_es_audio )
368 if( fh.i_compression == '3' )
369 es_out_Send( p_demux->out, p_sys->p_es_audio, p_data );
372 msg_Dbg( p_demux, "unsupported compression %c for audio (upload samples)", fh.i_compression );
373 block_Release( p_data );
376 else if( fh.i_type == 'V' && p_sys->p_es_video )
378 if( fh.i_compression >= '4' )
379 es_out_Send( p_demux->out, p_sys->p_es_video, p_data );
382 msg_Dbg( p_demux, "unsupported compression %c for video (upload samples)", fh.i_compression );
383 block_Release( p_data );
388 block_Release( p_data );
394 /*****************************************************************************
396 *****************************************************************************/
397 static int Control( demux_t *p_demux, int i_query, va_list args )
399 demux_sys_t *p_sys = p_demux->p_sys;
407 case DEMUX_GET_POSITION:
408 pf = (double*)va_arg( args, double * );
409 i64 = stream_Size( p_demux->s );
411 *pf = (double)stream_Tell( p_demux->s ) / (double)i64;
416 case DEMUX_SET_POSITION:
420 f = (double)va_arg( args, double );
421 i_pos = stream_Size( p_demux->s ) * f;
423 i64 = demux_IndexFindOffset( &p_sys->idx, i_pos );
428 return stream_Seek( p_demux->s, i64 );
430 if( p_sys->idx.i_idx > 0 )
432 if( stream_Seek( p_demux->s, p_sys->idx.idx[p_sys->idx.i_idx-1].i_offset ) )
437 if( stream_Seek( p_demux->s, 0 ) )
441 while( !p_demux->b_die )
446 if( ( i_tell = stream_Tell( p_demux->s ) ) >= i_pos )
449 if( FrameHeaderLoad( p_demux, &fh ) )
452 if( fh.i_type == 'A' || fh.i_type == 'V' )
453 demux_IndexAppend( &p_sys->idx,(int64_t)fh.i_timecode*1000, i_tell );
455 if( fh.i_type != 'R' )
456 stream_Read( p_demux->s, NULL, fh.i_length );
463 pi64 = (int64_t*)va_arg( args, int64_t * );
464 *pi64 = p_sys->i_pcr >= 0 ? p_sys->i_pcr : 0;
470 i64 = (int64_t)va_arg( args, int64_t );
472 i_pos = demux_IndexConvertTime( &p_sys->idx, i64 );
476 if( stream_Seek( p_demux->s, i_pos ) )
481 while( !p_demux->b_die )
485 if( FrameHeaderLoad( p_demux, &fh ) )
488 if( fh.i_type == 'A' || fh.i_type == 'V' )
490 int64_t i_time = (int64_t)fh.i_timecode*1000;
491 int64_t i_tell = stream_Tell(p_demux->s)-12;
493 demux_IndexAppend( &p_sys->idx, i_time, i_tell );
496 return stream_Seek( p_demux->s, i_tell );
498 if( fh.i_type != 'R' )
499 stream_Read( p_demux->s, NULL, fh.i_length );
504 case DEMUX_GET_LENGTH:
505 pi64 = (int64_t*)va_arg( args, int64_t * );
509 pf = (double*)va_arg( args, double * );
510 *pf = p_sys->hdr.d_fps;
520 /*****************************************************************************
522 *****************************************************************************/
523 static inline void GetDoubleLE( double *pd, void *src )
525 /* FIXME works only if sizeof(double) == 8 */
526 #ifdef WORDS_BIGENDIAN
527 uint8_t *p = (uint8_t*)pd, *q = (uint8_t*)src;
529 for( i = 0; i < 8; i++ )
532 memcpy( pd, src, 8 );
538 static int HeaderLoad( demux_t *p_demux, header_t *h )
542 if( stream_Read( p_demux->s, buffer, 72 ) != 72 )
545 /* XXX: they are alignment to take care of (another broken format) */
546 memcpy( h->id, &buffer[ 0], 12 );
547 memcpy( h->version, &buffer[12], 5 );
548 h->i_width = GetDWLE( &buffer[20] );
549 h->i_height = GetDWLE( &buffer[24] );
550 h->i_width_desired = GetDWLE( &buffer[28] );
551 h->i_height_desired = GetDWLE( &buffer[32] );
552 h->i_mode = buffer[36];
553 GetDoubleLE( &h->d_aspect, &buffer[40] );
554 GetDoubleLE( &h->d_fps, &buffer[48] );
555 h->i_video_blocks = GetDWLE( &buffer[56] );
556 h->i_audio_blocks = GetDWLE( &buffer[60] );
557 h->i_text_blocks = GetDWLE( &buffer[64] );
558 h->i_keyframe_distance = GetDWLE( &buffer[68] );
560 msg_Dbg( p_demux, "nuv: h=%s v=%s %dx%d a=%f fps=%f v=%d a=%d t=%d kfd=%d",
561 h->id, h->version, h->i_width, h->i_height, h->d_aspect,
562 h->d_fps, h->i_video_blocks, h->i_audio_blocks, h->i_text_blocks,
563 h->i_keyframe_distance );
570 static int FrameHeaderLoad( demux_t *p_demux, frame_header_t *h )
574 if( stream_Read( p_demux->s, buffer, 12 ) != 12 )
577 h->i_type = buffer[0];
578 h->i_compression = buffer[1];
579 h->i_keyframe = buffer[2];
580 h->i_filters = buffer[3];
582 h->i_timecode = GetDWLE( &buffer[4] );
583 h->i_length = GetDWLE( &buffer[8] );
585 msg_Dbg( p_demux, "frame hdr: t=%c c=%c k=%d f=0x%x timecode=%d l=%d",
587 h->i_compression ? h->i_compression : ' ',
588 h->i_keyframe ? h->i_keyframe : ' ',
590 h->i_timecode, h->i_length );
595 static int ExtendedHeaderLoad( demux_t *p_demux, extended_header_t *h )
599 if( stream_Read( p_demux->s, buffer, 512 ) != 512 )
602 h->i_version = GetDWLE( &buffer[0] );
603 h->i_video_fcc = VLC_FOURCC( buffer[4], buffer[5], buffer[6], buffer[7] );
604 h->i_audio_fcc = VLC_FOURCC( buffer[8], buffer[9], buffer[10], buffer[11] );
605 h->i_audio_sample_rate = GetDWLE( &buffer[12] );
606 h->i_audio_bits_per_sample = GetDWLE( &buffer[16] );
607 h->i_audio_channels = GetDWLE( &buffer[20] );
608 h->i_audio_compression_ratio = GetDWLE( &buffer[24] );
609 h->i_audio_quality = GetDWLE( &buffer[28] );
610 h->i_rtjpeg_quality = GetDWLE( &buffer[32] );
611 h->i_rtjpeg_luma_filter = GetDWLE( &buffer[36] );
612 h->i_rtjpeg_chroma_filter = GetDWLE( &buffer[40] );
613 h->i_lavc_bitrate = GetDWLE( &buffer[44] );
614 h->i_lavc_qmin = GetDWLE( &buffer[48] );
615 h->i_lavc_qmin = GetDWLE( &buffer[52] );
616 h->i_lavc_maxqdiff = GetDWLE( &buffer[56] );
617 h->i_seekable_offset = GetQWLE( &buffer[60] );
618 h->i_keyframe_adjust_offset= GetQWLE( &buffer[68] );
620 msg_Dbg( p_demux, "ex hdr: v=%d vffc=%4.4s afcc=%4.4s %dHz %dbits ach=%d acr=%d aq=%d"
621 "rtjpeg q=%d lf=%d lc=%d lavc br=%d qmin=%d qmax=%d maxqdiff=%d seekableoff=%lld keyfao=%lld",
623 (char*)&h->i_video_fcc,
624 (char*)&h->i_audio_fcc, h->i_audio_sample_rate, h->i_audio_bits_per_sample, h->i_audio_channels,
625 h->i_audio_compression_ratio, h->i_audio_quality,
626 h->i_rtjpeg_quality, h->i_rtjpeg_luma_filter, h->i_rtjpeg_chroma_filter,
627 h->i_lavc_bitrate, h->i_lavc_qmin, h->i_lavc_qmax, h->i_lavc_maxqdiff,
628 h->i_seekable_offset, h->i_keyframe_adjust_offset );
633 /*****************************************************************************/
634 #define DEMUX_INDEX_SIZE_MAX (100000)
635 static void demux_IndexInit( demux_index_t *p_idx )
638 p_idx->i_idx_max = 0;
641 static void demux_IndexClean( demux_index_t *p_idx )
649 static void demux_IndexAppend( demux_index_t *p_idx,
650 int64_t i_time, int64_t i_offset )
652 /* Be sure to append new entry (we don't insert point) */
653 if( p_idx->i_idx > 0 && p_idx->idx[p_idx->i_idx-1].i_time >= i_time )
657 if( p_idx->i_idx >= p_idx->i_idx_max )
659 if( p_idx->i_idx >= DEMUX_INDEX_SIZE_MAX )
661 /* Avoid too big index */
662 const int64_t i_length = p_idx->idx[p_idx->i_idx-1].i_time -
663 p_idx->idx[0].i_time;
664 const int i_count = DEMUX_INDEX_SIZE_MAX/2;
667 /* We try to reduce the resolution of the index by a factor 2 */
668 for( i = 1, j = 1; i < p_idx->i_idx; i++ )
670 if( p_idx->idx[i].i_time < j * i_length / i_count )
673 p_idx->idx[j++] = p_idx->idx[i];
677 if( p_idx->i_idx > 3 * DEMUX_INDEX_SIZE_MAX / 4 )
679 /* We haven't created enough space
680 * (This method won't create a good index but work for sure) */
681 for( i = 0; i < p_idx->i_idx/2; i++ )
682 p_idx->idx[i] = p_idx->idx[2*i];
688 p_idx->i_idx_max += 1000;
689 p_idx->idx = realloc( p_idx->idx,
690 p_idx->i_idx_max*sizeof(demux_index_entry_t));
695 p_idx->idx[p_idx->i_idx].i_time = i_time;
696 p_idx->idx[p_idx->i_idx].i_offset = i_offset;
700 static int64_t demux_IndexConvertTime( demux_index_t *p_idx, int64_t i_time )
703 int i_max = p_idx->i_idx-1;
706 if( p_idx->i_idx <= 0 )
709 /* Special border case */
710 if( i_time <= p_idx->idx[0].i_time )
711 return p_idx->idx[0].i_offset;
712 if( i_time >= p_idx->idx[i_max].i_time )
713 return p_idx->idx[i_max].i_offset;
720 if( i_max - i_min <= 1 )
723 i_med = (i_min+i_max)/2;
724 if( p_idx->idx[i_med].i_time < i_time )
726 else if( p_idx->idx[i_med].i_time > i_time )
729 return p_idx->idx[i_med].i_offset;
732 /* return nearest in time */
733 if( i_time - p_idx->idx[i_min].i_time < p_idx->idx[i_max].i_time - i_time )
734 return p_idx->idx[i_min].i_offset;
736 return p_idx->idx[i_max].i_offset;
740 static int64_t demux_IndexFindOffset( demux_index_t *p_idx, int64_t i_offset )
743 int i_max = p_idx->i_idx-1;
746 if( p_idx->i_idx <= 0 )
749 /* Special border case */
750 if( i_offset <= p_idx->idx[0].i_offset )
751 return p_idx->idx[0].i_offset;
752 if( i_offset == p_idx->idx[i_max].i_offset )
753 return p_idx->idx[i_max].i_offset;
754 if( i_offset > p_idx->idx[i_max].i_offset )
762 if( i_max - i_min <= 1 )
765 i_med = (i_min+i_max)/2;
766 if( p_idx->idx[i_med].i_offset < i_offset )
768 else if( p_idx->idx[i_med].i_offset > i_offset )
771 return p_idx->idx[i_med].i_offset;
775 if( i_offset - p_idx->idx[i_min].i_offset < p_idx->idx[i_max].i_offset - i_offset )
776 return p_idx->idx[i_min].i_offset;
778 return p_idx->idx[i_max].i_offset;