1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2001 the VideoLAN team
6 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21 *****************************************************************************/
25 #include <vlc_demux.h>
26 #include <vlc_codecs.h> /* BITMAPINFOHEADER */
32 #define __EVEN( x ) ( (x)&0x01 ? (x)+1 : (x) )
34 static vlc_fourcc_t GetFOURCC( const byte_t *p_buff )
36 return VLC_FOURCC( p_buff[0], p_buff[1], p_buff[2], p_buff[3] );
39 #define AVI_ChunkFree( a, b ) _AVI_ChunkFree( (a), (avi_chunk_t*)(b) )
40 void _AVI_ChunkFree( stream_t *, avi_chunk_t *p_chk );
42 /****************************************************************************
44 * Basics functions to manipulates chunks
46 ****************************************************************************/
47 static int AVI_ChunkReadCommon( stream_t *s, avi_chunk_t *p_chk )
49 const uint8_t *p_peek;
52 memset( p_chk, 0, sizeof( avi_chunk_t ) );
54 if( ( i_peek = stream_Peek( s, &p_peek, 8 ) ) < 8 )
59 p_chk->common.i_chunk_fourcc = GetFOURCC( p_peek );
60 p_chk->common.i_chunk_size = GetDWLE( p_peek + 4 );
61 p_chk->common.i_chunk_pos = stream_Tell( s );
63 p_chk->common.p_father = NULL;
64 p_chk->common.p_next = NULL;
65 p_chk->common.p_first = NULL;
66 p_chk->common.p_next = NULL;
69 msg_Dbg( (vlc_object_t*)s,
70 "found Chunk fourcc:%8.8x (%4.4s) size:"I64Fd" pos:"I64Fd,
71 p_chk->common.i_chunk_fourcc,
72 (char*)&p_chk->common.i_chunk_fourcc,
73 p_chk->common.i_chunk_size,
74 p_chk->common.i_chunk_pos );
79 static int AVI_NextChunk( stream_t *s, avi_chunk_t *p_chk )
85 if( AVI_ChunkReadCommon( s, &chk ) )
92 if( p_chk->common.p_father )
94 if( p_chk->common.p_father->common.i_chunk_pos +
95 __EVEN( p_chk->common.p_father->common.i_chunk_size ) + 8 <
96 p_chk->common.i_chunk_pos +
97 __EVEN( p_chk->common.i_chunk_size ) + 8 )
102 return stream_Seek( s, p_chk->common.i_chunk_pos +
103 __EVEN( p_chk->common.i_chunk_size ) + 8 );
106 /****************************************************************************
108 * Functions to read chunks
110 ****************************************************************************/
111 static int AVI_ChunkRead_list( stream_t *s, avi_chunk_t *p_container )
114 const uint8_t *p_peek;
115 vlc_bool_t b_seekable;
117 if( p_container->common.i_chunk_size > 0 && p_container->common.i_chunk_size < 8 )
120 msg_Warn( (vlc_object_t*)s, "empty list chunk" );
123 if( stream_Peek( s, &p_peek, 12 ) < 12 )
125 msg_Warn( (vlc_object_t*)s, "cannot peek while reading list chunk" );
129 stream_Control( s, STREAM_CAN_FASTSEEK, &b_seekable );
131 p_container->list.i_type = GetFOURCC( p_peek + 8 );
133 /* XXX fixed for on2 hack */
134 if( p_container->common.i_chunk_fourcc == AVIFOURCC_ON2 && p_container->list.i_type == AVIFOURCC_ON2f )
136 p_container->common.i_chunk_fourcc = AVIFOURCC_RIFF;
137 p_container->list.i_type = AVIFOURCC_AVI;
140 if( p_container->common.i_chunk_fourcc == AVIFOURCC_LIST &&
141 p_container->list.i_type == AVIFOURCC_movi )
143 msg_Dbg( (vlc_object_t*)s, "skipping movi chunk" );
146 return AVI_NextChunk( s, p_container );
148 return VLC_SUCCESS; /* point at begining of LIST-movi */
151 if( stream_Read( s, NULL, 12 ) != 12 )
153 msg_Warn( (vlc_object_t*)s, "cannot enter chunk" );
158 msg_Dbg( (vlc_object_t*)s,
159 "found LIST chunk: \'%4.4s\'",
160 (char*)&p_container->list.i_type );
162 msg_Dbg( (vlc_object_t*)s, "<list \'%4.4s\'>", (char*)&p_container->list.i_type );
165 p_chk = malloc( sizeof( avi_chunk_t ) );
166 memset( p_chk, 0, sizeof( avi_chunk_t ) );
167 if( !p_container->common.p_first )
169 p_container->common.p_first = p_chk;
173 p_container->common.p_last->common.p_next = p_chk;
175 p_container->common.p_last = p_chk;
177 if( AVI_ChunkRead( s, p_chk, p_container ) )
181 if( p_chk->common.p_father->common.i_chunk_size > 0 &&
183 (off_t)p_chk->common.p_father->common.i_chunk_pos +
184 (off_t)__EVEN( p_chk->common.p_father->common.i_chunk_size ) ) )
189 /* If we can't seek then stop when we 've found LIST-movi */
190 if( p_chk->common.i_chunk_fourcc == AVIFOURCC_LIST &&
191 p_chk->list.i_type == AVIFOURCC_movi &&
192 ( !b_seekable || p_chk->common.i_chunk_size == 0 ) )
198 msg_Dbg( (vlc_object_t*)s, "</list \'%4.4s\'>", (char*)&p_container->list.i_type );
203 #define AVI_READCHUNK_ENTER \
204 int64_t i_read = __EVEN(p_chk->common.i_chunk_size ) + 8; \
205 uint8_t *p_read, *p_buff; \
206 if( !( p_read = p_buff = malloc(i_read ) ) ) \
208 return VLC_EGENERIC; \
210 i_read = stream_Read( s, p_read, i_read ); \
211 if( i_read < (int64_t)__EVEN(p_chk->common.i_chunk_size ) + 8 ) \
214 return VLC_EGENERIC; \
219 #define AVI_READ( res, func, size ) \
220 if( i_read < size ) { \
222 return VLC_EGENERIC; \
225 res = func( p_read ); \
228 #define AVI_READCHUNK_EXIT( code ) \
232 static inline uint8_t GetB( uint8_t *ptr )
237 #define AVI_READ1BYTE( i_byte ) \
238 AVI_READ( i_byte, GetB, 1 )
240 #define AVI_READ2BYTES( i_word ) \
241 AVI_READ( i_word, GetWLE, 2 )
243 #define AVI_READ4BYTES( i_dword ) \
244 AVI_READ( i_dword, GetDWLE, 4 )
246 #define AVI_READ8BYTES( i_qword ) \
247 AVI_READ( i_qword, GetQWLE, 8 )
249 #define AVI_READFOURCC( i_dword ) \
250 AVI_READ( i_dword, GetFOURCC, 4 )
252 static int AVI_ChunkRead_avih( stream_t *s, avi_chunk_t *p_chk )
256 p_chk->common.i_chunk_fourcc = AVIFOURCC_avih;
257 AVI_READ4BYTES( p_chk->avih.i_microsecperframe);
258 AVI_READ4BYTES( p_chk->avih.i_maxbytespersec );
259 AVI_READ4BYTES( p_chk->avih.i_reserved1 );
260 AVI_READ4BYTES( p_chk->avih.i_flags );
261 AVI_READ4BYTES( p_chk->avih.i_totalframes );
262 AVI_READ4BYTES( p_chk->avih.i_initialframes );
263 AVI_READ4BYTES( p_chk->avih.i_streams );
264 AVI_READ4BYTES( p_chk->avih.i_suggestedbuffersize );
265 AVI_READ4BYTES( p_chk->avih.i_width );
266 AVI_READ4BYTES( p_chk->avih.i_height );
267 AVI_READ4BYTES( p_chk->avih.i_scale );
268 AVI_READ4BYTES( p_chk->avih.i_rate );
269 AVI_READ4BYTES( p_chk->avih.i_start );
270 AVI_READ4BYTES( p_chk->avih.i_length );
272 msg_Dbg( (vlc_object_t*)s,
273 "avih: streams:%d flags:%s%s%s%s %dx%d",
274 p_chk->avih.i_streams,
275 p_chk->avih.i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
276 p_chk->avih.i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
277 p_chk->avih.i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
278 p_chk->avih.i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"",
279 p_chk->avih.i_width, p_chk->avih.i_height );
281 AVI_READCHUNK_EXIT( VLC_SUCCESS );
284 static int AVI_ChunkRead_strh( stream_t *s, avi_chunk_t *p_chk )
288 AVI_READFOURCC( p_chk->strh.i_type );
289 AVI_READFOURCC( p_chk->strh.i_handler );
290 AVI_READ4BYTES( p_chk->strh.i_flags );
291 AVI_READ4BYTES( p_chk->strh.i_reserved1 );
292 AVI_READ4BYTES( p_chk->strh.i_initialframes );
293 AVI_READ4BYTES( p_chk->strh.i_scale );
294 AVI_READ4BYTES( p_chk->strh.i_rate );
295 AVI_READ4BYTES( p_chk->strh.i_start );
296 AVI_READ4BYTES( p_chk->strh.i_length );
297 AVI_READ4BYTES( p_chk->strh.i_suggestedbuffersize );
298 AVI_READ4BYTES( p_chk->strh.i_quality );
299 AVI_READ4BYTES( p_chk->strh.i_samplesize );
301 msg_Dbg( (vlc_object_t*)s,
302 "strh: type:%4.4s handler:0x%8.8x samplesize:%d %.2ffps",
303 (char*)&p_chk->strh.i_type,
304 p_chk->strh.i_handler,
305 p_chk->strh.i_samplesize,
306 ( p_chk->strh.i_scale ?
307 (float)p_chk->strh.i_rate / (float)p_chk->strh.i_scale : -1) );
310 AVI_READCHUNK_EXIT( VLC_SUCCESS );
313 static int AVI_ChunkRead_strf( stream_t *s, avi_chunk_t *p_chk )
318 if( p_chk->common.p_father == NULL )
320 msg_Err( (vlc_object_t*)s, "malformed avi file" );
321 AVI_READCHUNK_EXIT( VLC_EGENERIC );
323 if( !( p_strh = AVI_ChunkFind( p_chk->common.p_father, AVIFOURCC_strh, 0 ) ) )
325 msg_Err( (vlc_object_t*)s, "malformed avi file" );
326 AVI_READCHUNK_EXIT( VLC_EGENERIC );
329 switch( p_strh->strh.i_type )
331 case( AVIFOURCC_auds ):
332 p_chk->strf.auds.i_cat = AUDIO_ES;
333 p_chk->strf.auds.p_wf = malloc( __MAX( p_chk->common.i_chunk_size, sizeof( WAVEFORMATEX ) ) );
334 AVI_READ2BYTES( p_chk->strf.auds.p_wf->wFormatTag );
335 AVI_READ2BYTES( p_chk->strf.auds.p_wf->nChannels );
336 AVI_READ4BYTES( p_chk->strf.auds.p_wf->nSamplesPerSec );
337 AVI_READ4BYTES( p_chk->strf.auds.p_wf->nAvgBytesPerSec );
338 AVI_READ2BYTES( p_chk->strf.auds.p_wf->nBlockAlign );
339 AVI_READ2BYTES( p_chk->strf.auds.p_wf->wBitsPerSample );
340 if( p_chk->strf.auds.p_wf->wFormatTag != WAVE_FORMAT_PCM
341 && p_chk->common.i_chunk_size > sizeof( WAVEFORMATEX ) )
343 AVI_READ2BYTES( p_chk->strf.auds.p_wf->cbSize );
344 /* prevent segfault */
345 if( p_chk->strf.auds.p_wf->cbSize >
346 p_chk->common.i_chunk_size - sizeof( WAVEFORMATEX ) )
348 p_chk->strf.auds.p_wf->cbSize =
349 p_chk->common.i_chunk_size - sizeof( WAVEFORMATEX );
351 if( p_chk->strf.auds.p_wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE )
353 /* Found an extensible header atm almost nothing uses that. */
354 msg_Warn( (vlc_object_t*)s, "WAVE_FORMAT_EXTENSIBLE or "
355 "vorbis audio dectected: not supported" );
360 p_chk->strf.auds.p_wf->cbSize = 0;
362 if( p_chk->strf.auds.p_wf->cbSize > 0 )
364 memcpy( &p_chk->strf.auds.p_wf[1] ,
365 p_buff + 8 + sizeof( WAVEFORMATEX ), /* 8=fourrc+size */
366 p_chk->strf.auds.p_wf->cbSize );
369 msg_Dbg( (vlc_object_t*)s,
370 "strf: audio:0x%4.4x channels:%d %dHz %dbits/sample %dkb/s",
371 p_chk->strf.auds.p_wf->wFormatTag,
372 p_chk->strf.auds.p_wf->nChannels,
373 p_chk->strf.auds.p_wf->nSamplesPerSec,
374 p_chk->strf.auds.p_wf->wBitsPerSample,
375 p_chk->strf.auds.p_wf->nAvgBytesPerSec * 8 / 1024 );
378 case( AVIFOURCC_vids ):
379 p_strh->strh.i_samplesize = 0; /* XXX for ffmpeg avi file */
380 p_chk->strf.vids.i_cat = VIDEO_ES;
381 p_chk->strf.vids.p_bih = malloc( p_chk->common.i_chunk_size );
382 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biSize );
383 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biWidth );
384 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biHeight );
385 AVI_READ2BYTES( p_chk->strf.vids.p_bih->biPlanes );
386 AVI_READ2BYTES( p_chk->strf.vids.p_bih->biBitCount );
387 AVI_READFOURCC( p_chk->strf.vids.p_bih->biCompression );
388 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biSizeImage );
389 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biXPelsPerMeter );
390 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biYPelsPerMeter );
391 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biClrUsed );
392 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biClrImportant );
393 if( p_chk->strf.vids.p_bih->biSize > p_chk->common.i_chunk_size )
395 p_chk->strf.vids.p_bih->biSize = p_chk->common.i_chunk_size;
397 if( p_chk->strf.vids.p_bih->biSize - sizeof(BITMAPINFOHEADER) > 0 )
399 memcpy( &p_chk->strf.vids.p_bih[1],
400 p_buff + 8 + sizeof(BITMAPINFOHEADER), /* 8=fourrc+size */
401 p_chk->common.i_chunk_size -sizeof(BITMAPINFOHEADER) );
404 msg_Dbg( (vlc_object_t*)s,
405 "strf: video:%4.4s %dx%d planes:%d %dbpp",
406 (char*)&p_chk->strf.vids.p_bih->biCompression,
407 p_chk->strf.vids.p_bih->biWidth,
408 p_chk->strf.vids.p_bih->biHeight,
409 p_chk->strf.vids.p_bih->biPlanes,
410 p_chk->strf.vids.p_bih->biBitCount );
414 msg_Warn( (vlc_object_t*)s, "unknown stream type" );
415 p_chk->strf.common.i_cat = UNKNOWN_ES;
418 AVI_READCHUNK_EXIT( VLC_SUCCESS );
420 static void AVI_ChunkFree_strf( avi_chunk_t *p_chk )
422 avi_chunk_strf_t *p_strf = (avi_chunk_strf_t*)p_chk;
423 if( p_strf->common.i_cat == AUDIO_ES )
425 FREENULL( p_strf->auds.p_wf );
427 else if( p_strf->common.i_cat == VIDEO_ES )
429 FREENULL( p_strf->vids.p_bih );
433 static int AVI_ChunkRead_strd( stream_t *s, avi_chunk_t *p_chk )
436 p_chk->strd.p_data = malloc( p_chk->common.i_chunk_size );
437 memcpy( p_chk->strd.p_data, p_buff + 8, p_chk->common.i_chunk_size );
438 AVI_READCHUNK_EXIT( VLC_SUCCESS );
441 static void AVI_ChunkFree_strd( avi_chunk_t *p_chk )
443 if( p_chk->strd.p_data ) free( p_chk->strd.p_data );
446 static int AVI_ChunkRead_idx1( stream_t *s, avi_chunk_t *p_chk )
448 unsigned int i_count, i_index;
452 i_count = __MIN( (int64_t)p_chk->common.i_chunk_size, i_read ) / 16;
454 p_chk->idx1.i_entry_count = i_count;
455 p_chk->idx1.i_entry_max = i_count;
458 p_chk->idx1.entry = calloc( i_count, sizeof( idx1_entry_t ) );
460 for( i_index = 0; i_index < i_count ; i_index++ )
462 AVI_READFOURCC( p_chk->idx1.entry[i_index].i_fourcc );
463 AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_flags );
464 AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_pos );
465 AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_length );
470 p_chk->idx1.entry = NULL;
473 msg_Dbg( (vlc_object_t*)s, "idx1: index entry:%d", i_count );
475 AVI_READCHUNK_EXIT( VLC_SUCCESS );
478 static void AVI_ChunkFree_idx1( avi_chunk_t *p_chk )
480 p_chk->idx1.i_entry_count = 0;
481 p_chk->idx1.i_entry_max = 0;
482 FREENULL( p_chk->idx1.entry );
487 static int AVI_ChunkRead_indx( stream_t *s, avi_chunk_t *p_chk )
489 unsigned int i_count, i;
491 avi_chunk_indx_t *p_indx = (avi_chunk_indx_t*)p_chk;
495 AVI_READ2BYTES( p_indx->i_longsperentry );
496 AVI_READ1BYTE ( p_indx->i_indexsubtype );
497 AVI_READ1BYTE ( p_indx->i_indextype );
498 AVI_READ4BYTES( p_indx->i_entriesinuse );
500 AVI_READ4BYTES( p_indx->i_id );
501 p_indx->idx.std = NULL;
502 p_indx->idx.field = NULL;
503 p_indx->idx.super = NULL;
505 if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS && p_indx->i_indexsubtype == 0 )
507 AVI_READ8BYTES( p_indx->i_baseoffset );
508 AVI_READ4BYTES( i_dummy );
510 i_count = __MIN( p_indx->i_entriesinuse, i_read / 8 );
511 p_indx->i_entriesinuse = i_count;
512 p_indx->idx.std = calloc( sizeof( indx_std_entry_t ), i_count );
514 for( i = 0; i < i_count; i++ )
516 AVI_READ4BYTES( p_indx->idx.std[i].i_offset );
517 AVI_READ4BYTES( p_indx->idx.std[i].i_size );
520 else if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS && p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
522 AVI_READ8BYTES( p_indx->i_baseoffset );
523 AVI_READ4BYTES( i_dummy );
525 i_count = __MIN( p_indx->i_entriesinuse, i_read / 12 );
526 p_indx->i_entriesinuse = i_count;
527 p_indx->idx.field = calloc( sizeof( indx_field_entry_t ), i_count );
528 for( i = 0; i < i_count; i++ )
530 AVI_READ4BYTES( p_indx->idx.field[i].i_offset );
531 AVI_READ4BYTES( p_indx->idx.field[i].i_size );
532 AVI_READ4BYTES( p_indx->idx.field[i].i_offsetfield2 );
535 else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
537 p_indx->i_baseoffset = 0;
538 AVI_READ4BYTES( i_dummy );
539 AVI_READ4BYTES( i_dummy );
540 AVI_READ4BYTES( i_dummy );
542 i_count = __MIN( p_indx->i_entriesinuse, i_read / 16 );
543 p_indx->i_entriesinuse = i_count;
544 p_indx->idx.super = calloc( sizeof( indx_super_entry_t ), i_count );
546 for( i = 0; i < i_count; i++ )
548 AVI_READ8BYTES( p_indx->idx.super[i].i_offset );
549 AVI_READ4BYTES( p_indx->idx.super[i].i_size );
550 AVI_READ4BYTES( p_indx->idx.super[i].i_duration );
555 msg_Warn( (vlc_object_t*)s, "unknow type/subtype index" );
559 msg_Dbg( (vlc_object_t*)s, "indx: type=%d subtype=%d entry=%d", p_indx->i_indextype, p_indx->i_indexsubtype, p_indx->i_entriesinuse );
561 AVI_READCHUNK_EXIT( VLC_SUCCESS );
563 static void AVI_ChunkFree_indx( avi_chunk_t *p_chk )
565 avi_chunk_indx_t *p_indx = (avi_chunk_indx_t*)p_chk;
567 FREENULL( p_indx->idx.std );
568 FREENULL( p_indx->idx.field );
569 FREENULL( p_indx->idx.super );
576 vlc_fourcc_t i_fourcc;
577 const char *psz_type;
580 { AVIFOURCC_IARL, "archive location" },
581 { AVIFOURCC_IART, "artist" },
582 { AVIFOURCC_ICMS, "commisioned" },
583 { AVIFOURCC_ICMT, "comments" },
584 { AVIFOURCC_ICOP, "copyright" },
585 { AVIFOURCC_ICRD, "creation date" },
586 { AVIFOURCC_ICRP, "cropped" },
587 { AVIFOURCC_IDIM, "dimensions" },
588 { AVIFOURCC_IDPI, "dots per inch" },
589 { AVIFOURCC_IENG, "engineer" },
590 { AVIFOURCC_IGNR, "genre" },
591 { AVIFOURCC_IKEY, "keywords" },
592 { AVIFOURCC_ILGT, "lightness" },
593 { AVIFOURCC_IMED, "medium" },
594 { AVIFOURCC_INAM, "name" },
595 { AVIFOURCC_IPLT, "palette setting" },
596 { AVIFOURCC_IPRD, "product" },
597 { AVIFOURCC_ISBJ, "subject" },
598 { AVIFOURCC_ISFT, "software" },
599 { AVIFOURCC_ISHP, "sharpness" },
600 { AVIFOURCC_ISRC, "source" },
601 { AVIFOURCC_ISRF, "source form" },
602 { AVIFOURCC_ITCH, "technician" },
603 { AVIFOURCC_ISMP, "time code" },
604 { AVIFOURCC_IDIT, "digitalization time" },
605 { AVIFOURCC_strn, "stream name" },
608 static int AVI_ChunkRead_strz( stream_t *s, avi_chunk_t *p_chk )
611 avi_chunk_STRING_t *p_strz = (avi_chunk_STRING_t*)p_chk;
614 for( i_index = 0;; i_index++)
616 if( !AVI_strz_type[i_index].i_fourcc ||
617 AVI_strz_type[i_index].i_fourcc == p_strz->i_chunk_fourcc )
622 p_strz->p_type = strdup( AVI_strz_type[i_index].psz_type );
623 p_strz->p_str = malloc( i_read + 1);
625 if( p_strz->i_chunk_size )
627 memcpy( p_strz->p_str, p_read, i_read );
629 p_strz->p_str[i_read] = 0;
632 msg_Dbg( (vlc_object_t*)s, "%4.4s: %s : %s",
633 (char*)&p_strz->i_chunk_fourcc, p_strz->p_type, p_strz->p_str);
635 AVI_READCHUNK_EXIT( VLC_SUCCESS );
637 static void AVI_ChunkFree_strz( avi_chunk_t *p_chk )
639 avi_chunk_STRING_t *p_strz = (avi_chunk_STRING_t*)p_chk;
640 FREENULL( p_strz->p_type );
641 FREENULL( p_strz->p_str );
644 static int AVI_ChunkRead_nothing( stream_t *s, avi_chunk_t *p_chk )
646 return AVI_NextChunk( s, p_chk );
648 static void AVI_ChunkFree_nothing( avi_chunk_t *p_chk )
655 vlc_fourcc_t i_fourcc;
656 int (*AVI_ChunkRead_function)( stream_t *s, avi_chunk_t *p_chk );
657 void (*AVI_ChunkFree_function)( avi_chunk_t *p_chk );
658 } AVI_Chunk_Function [] =
660 { AVIFOURCC_RIFF, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
661 { AVIFOURCC_ON2, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
662 { AVIFOURCC_LIST, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
663 { AVIFOURCC_avih, AVI_ChunkRead_avih, AVI_ChunkFree_nothing },
664 { AVIFOURCC_ON2h, AVI_ChunkRead_avih, AVI_ChunkFree_nothing },
665 { AVIFOURCC_strh, AVI_ChunkRead_strh, AVI_ChunkFree_nothing },
666 { AVIFOURCC_strf, AVI_ChunkRead_strf, AVI_ChunkFree_strf },
667 { AVIFOURCC_strd, AVI_ChunkRead_strd, AVI_ChunkFree_strd },
668 { AVIFOURCC_idx1, AVI_ChunkRead_idx1, AVI_ChunkFree_idx1 },
669 { AVIFOURCC_indx, AVI_ChunkRead_indx, AVI_ChunkFree_indx },
670 { AVIFOURCC_JUNK, AVI_ChunkRead_nothing, AVI_ChunkFree_nothing },
672 { AVIFOURCC_IARL, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
673 { AVIFOURCC_IARL, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
674 { AVIFOURCC_IART, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
675 { AVIFOURCC_ICMS, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
676 { AVIFOURCC_ICMT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
677 { AVIFOURCC_ICOP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
678 { AVIFOURCC_ICRD, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
679 { AVIFOURCC_ICRP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
680 { AVIFOURCC_IDIM, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
681 { AVIFOURCC_IDPI, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
682 { AVIFOURCC_IENG, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
683 { AVIFOURCC_IGNR, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
684 { AVIFOURCC_IKEY, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
685 { AVIFOURCC_ILGT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
686 { AVIFOURCC_IMED, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
687 { AVIFOURCC_INAM, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
688 { AVIFOURCC_IPLT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
689 { AVIFOURCC_IPRD, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
690 { AVIFOURCC_ISBJ, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
691 { AVIFOURCC_ISFT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
692 { AVIFOURCC_ISHP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
693 { AVIFOURCC_ISRC, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
694 { AVIFOURCC_ISRF, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
695 { AVIFOURCC_ITCH, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
696 { AVIFOURCC_ISMP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
697 { AVIFOURCC_IDIT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
698 { AVIFOURCC_strn, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
702 static int AVI_ChunkFunctionFind( vlc_fourcc_t i_fourcc )
704 unsigned int i_index;
705 for( i_index = 0; ; i_index++ )
707 if( ( AVI_Chunk_Function[i_index].i_fourcc == i_fourcc )||
708 ( AVI_Chunk_Function[i_index].i_fourcc == 0 ) )
715 int _AVI_ChunkRead( stream_t *s, avi_chunk_t *p_chk, avi_chunk_t *p_father )
724 if( AVI_ChunkReadCommon( s, p_chk ) )
726 msg_Warn( (vlc_object_t*)s, "cannot read one chunk" );
729 if( p_chk->common.i_chunk_fourcc == VLC_FOURCC( 0, 0, 0, 0 ) )
731 msg_Warn( (vlc_object_t*)s, "found null fourcc chunk (corrupted file?)" );
734 p_chk->common.p_father = p_father;
736 i_index = AVI_ChunkFunctionFind( p_chk->common.i_chunk_fourcc );
737 if( AVI_Chunk_Function[i_index].AVI_ChunkRead_function )
739 return AVI_Chunk_Function[i_index].AVI_ChunkRead_function( s, p_chk );
741 else if( ( ((char*)&p_chk->common.i_chunk_fourcc)[0] == 'i' &&
742 ((char*)&p_chk->common.i_chunk_fourcc)[1] == 'x' ) ||
743 ( ((char*)&p_chk->common.i_chunk_fourcc)[2] == 'i' &&
744 ((char*)&p_chk->common.i_chunk_fourcc)[3] == 'x' ) )
746 p_chk->common.i_chunk_fourcc = AVIFOURCC_indx;
747 return AVI_ChunkRead_indx( s, p_chk );
749 msg_Warn( (vlc_object_t*)s, "unknown chunk (not loaded)" );
750 return AVI_NextChunk( s, p_chk );
753 void _AVI_ChunkFree( stream_t *s,
757 avi_chunk_t *p_child, *p_next;
764 /* Free all child chunk */
765 p_child = p_chk->common.p_first;
768 p_next = p_child->common.p_next;
769 AVI_ChunkFree( s, p_child );
774 i_index = AVI_ChunkFunctionFind( p_chk->common.i_chunk_fourcc );
775 if( AVI_Chunk_Function[i_index].AVI_ChunkFree_function )
778 msg_Dbg( (vlc_object_t*)s, "free chunk %4.4s",
779 (char*)&p_chk->common.i_chunk_fourcc );
781 AVI_Chunk_Function[i_index].AVI_ChunkFree_function( p_chk);
785 msg_Warn( (vlc_object_t*)s, "unknown chunk (not unloaded)" );
787 p_chk->common.p_first = NULL;
788 p_chk->common.p_last = NULL;
793 static void AVI_ChunkDumpDebug_level( vlc_object_t *p_obj,
794 avi_chunk_t *p_chk, int i_level )
798 avi_chunk_t *p_child;
800 memset( str, ' ', sizeof( str ) );
801 for( i = 1; i < i_level; i++ )
805 if( p_chk->common.i_chunk_fourcc == AVIFOURCC_RIFF ||
806 p_chk->common.i_chunk_fourcc == AVIFOURCC_ON2 ||
807 p_chk->common.i_chunk_fourcc == AVIFOURCC_LIST )
809 sprintf( str + i_level * 5,
810 "%c %4.4s-%4.4s size:"I64Fu" pos:"I64Fu,
812 (char*)&p_chk->common.i_chunk_fourcc,
813 (char*)&p_chk->list.i_type,
814 p_chk->common.i_chunk_size,
815 p_chk->common.i_chunk_pos );
819 sprintf( str + i_level * 5,
820 "+ %4.4s size:"I64Fu" pos:"I64Fu,
821 (char*)&p_chk->common.i_chunk_fourcc,
822 p_chk->common.i_chunk_size,
823 p_chk->common.i_chunk_pos );
825 msg_Dbg( p_obj, "%s", str );
827 p_child = p_chk->common.p_first;
830 AVI_ChunkDumpDebug_level( p_obj, p_child, i_level + 1 );
831 p_child = p_child->common.p_next;
835 int AVI_ChunkReadRoot( stream_t *s, avi_chunk_t *p_root )
837 avi_chunk_list_t *p_list = (avi_chunk_list_t*)p_root;
839 vlc_bool_t b_seekable;
841 stream_Control( s, STREAM_CAN_FASTSEEK, &b_seekable );
843 p_list->i_chunk_pos = 0;
844 p_list->i_chunk_size = stream_Size( s );
845 p_list->i_chunk_fourcc = AVIFOURCC_LIST;
846 p_list->p_father = NULL;
847 p_list->p_next = NULL;
848 p_list->p_first = NULL;
849 p_list->p_last = NULL;
851 p_list->i_type = VLC_FOURCC( 'r', 'o', 'o', 't' );
855 p_chk = malloc( sizeof( avi_chunk_t ) );
856 memset( p_chk, 0, sizeof( avi_chunk_t ) );
857 if( !p_root->common.p_first )
859 p_root->common.p_first = p_chk;
863 p_root->common.p_last->common.p_next = p_chk;
865 p_root->common.p_last = p_chk;
867 if( AVI_ChunkRead( s, p_chk, p_root ) ||
868 ( stream_Tell( s ) >=
869 (off_t)p_chk->common.p_father->common.i_chunk_pos +
870 (off_t)__EVEN( p_chk->common.p_father->common.i_chunk_size ) ) )
874 /* If we can't seek then stop when we 've found first RIFF-AVI */
875 if( p_chk->common.i_chunk_fourcc == AVIFOURCC_RIFF &&
876 p_chk->list.i_type == AVIFOURCC_AVI && !b_seekable )
882 AVI_ChunkDumpDebug_level( (vlc_object_t*)s, p_root, 0 );
886 void AVI_ChunkFreeRoot( stream_t *s,
889 AVI_ChunkFree( s, p_chk );
893 int _AVI_ChunkCount( avi_chunk_t *p_chk, vlc_fourcc_t i_fourcc )
896 avi_chunk_t *p_child;
904 p_child = p_chk->common.p_first;
907 if( p_child->common.i_chunk_fourcc == i_fourcc ||
908 ( p_child->common.i_chunk_fourcc == AVIFOURCC_LIST &&
909 p_child->list.i_type == i_fourcc ) )
913 p_child = p_child->common.p_next;
918 void *_AVI_ChunkFind( avi_chunk_t *p_chk,
919 vlc_fourcc_t i_fourcc, int i_number )
921 avi_chunk_t *p_child;
926 p_child = p_chk->common.p_first;
930 if( p_child->common.i_chunk_fourcc == i_fourcc ||
931 ( p_child->common.i_chunk_fourcc == AVIFOURCC_LIST &&
932 p_child->list.i_type == i_fourcc ) )
942 p_child = p_child->common.p_next;