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 *****************************************************************************/
28 #include <vlc_common.h>
29 #include <vlc_demux.h>
30 #include <vlc_codecs.h> /* BITMAPINFOHEADER */
36 #define __EVEN( x ) (((x) + 1) & ~1)
38 static vlc_fourcc_t GetFOURCC( const uint8_t *p_buff )
40 return VLC_FOURCC( p_buff[0], p_buff[1], p_buff[2], p_buff[3] );
43 /****************************************************************************
45 * Basics functions to manipulates chunks
47 ****************************************************************************/
48 static int AVI_ChunkReadCommon( stream_t *s, avi_chunk_t *p_chk )
50 const uint8_t *p_peek;
52 memset( p_chk, 0, sizeof( avi_chunk_t ) );
54 if( stream_Peek( s, &p_peek, 8 ) < 8 )
57 p_chk->common.i_chunk_fourcc = GetFOURCC( p_peek );
58 p_chk->common.i_chunk_size = GetDWLE( p_peek + 4 );
59 p_chk->common.i_chunk_pos = stream_Tell( s );
61 p_chk->common.p_father = NULL;
62 p_chk->common.p_next = NULL;
63 p_chk->common.p_first = NULL;
64 p_chk->common.p_next = NULL;
67 msg_Dbg( (vlc_object_t*)s,
68 "found Chunk fourcc:%8.8x (%4.4s) size:%"PRId64" pos:%"PRId64,
69 p_chk->common.i_chunk_fourcc,
70 (char*)&p_chk->common.i_chunk_fourcc,
71 p_chk->common.i_chunk_size,
72 p_chk->common.i_chunk_pos );
77 static int AVI_NextChunk( stream_t *s, avi_chunk_t *p_chk )
83 if( AVI_ChunkReadCommon( s, &chk ) )
90 if( p_chk->common.p_father )
92 if( p_chk->common.p_father->common.i_chunk_pos +
93 __EVEN( p_chk->common.p_father->common.i_chunk_size ) + 8 <
94 p_chk->common.i_chunk_pos +
95 __EVEN( p_chk->common.i_chunk_size ) + 8 )
100 return stream_Seek( s, p_chk->common.i_chunk_pos +
101 __EVEN( p_chk->common.i_chunk_size ) + 8 );
104 /****************************************************************************
106 * Functions to read chunks
108 ****************************************************************************/
109 static int AVI_ChunkRead_list( stream_t *s, avi_chunk_t *p_container )
112 const uint8_t *p_peek;
115 if( p_container->common.i_chunk_size > 0 && p_container->common.i_chunk_size < 8 )
118 msg_Warn( (vlc_object_t*)s, "empty list chunk" );
121 if( stream_Peek( s, &p_peek, 12 ) < 12 )
123 msg_Warn( (vlc_object_t*)s, "cannot peek while reading list chunk" );
127 stream_Control( s, STREAM_CAN_FASTSEEK, &b_seekable );
129 p_container->list.i_type = GetFOURCC( p_peek + 8 );
131 /* XXX fixed for on2 hack */
132 if( p_container->common.i_chunk_fourcc == AVIFOURCC_ON2 && p_container->list.i_type == AVIFOURCC_ON2f )
134 p_container->common.i_chunk_fourcc = AVIFOURCC_RIFF;
135 p_container->list.i_type = AVIFOURCC_AVI;
138 if( p_container->common.i_chunk_fourcc == AVIFOURCC_LIST &&
139 p_container->list.i_type == AVIFOURCC_movi )
141 msg_Dbg( (vlc_object_t*)s, "skipping movi chunk" );
144 return AVI_NextChunk( s, p_container );
146 return VLC_SUCCESS; /* point at begining of LIST-movi */
149 if( stream_Read( s, NULL, 12 ) != 12 )
151 msg_Warn( (vlc_object_t*)s, "cannot enter chunk" );
156 msg_Dbg( (vlc_object_t*)s,
157 "found LIST chunk: \'%4.4s\'",
158 (char*)&p_container->list.i_type );
160 msg_Dbg( (vlc_object_t*)s, "<list \'%4.4s\'>", (char*)&p_container->list.i_type );
163 p_chk = malloc( sizeof( avi_chunk_t ) );
164 memset( p_chk, 0, sizeof( avi_chunk_t ) );
165 if( !p_container->common.p_first )
167 p_container->common.p_first = p_chk;
171 p_container->common.p_last->common.p_next = p_chk;
173 p_container->common.p_last = p_chk;
175 if( AVI_ChunkRead( s, p_chk, p_container ) )
179 if( p_chk->common.p_father->common.i_chunk_size > 0 &&
181 (off_t)p_chk->common.p_father->common.i_chunk_pos +
182 (off_t)__EVEN( p_chk->common.p_father->common.i_chunk_size ) ) )
187 /* If we can't seek then stop when we 've found LIST-movi */
188 if( p_chk->common.i_chunk_fourcc == AVIFOURCC_LIST &&
189 p_chk->list.i_type == AVIFOURCC_movi &&
190 ( !b_seekable || p_chk->common.i_chunk_size == 0 ) )
196 msg_Dbg( (vlc_object_t*)s, "</list \'%4.4s\'>", (char*)&p_container->list.i_type );
201 #define AVI_READCHUNK_ENTER \
202 int64_t i_read = __EVEN(p_chk->common.i_chunk_size ) + 8; \
203 if( i_read > 100000000 ) \
205 msg_Err( s, "Big chunk ignored" ); \
206 return VLC_EGENERIC; \
208 uint8_t *p_read, *p_buff; \
209 if( !( p_read = p_buff = malloc(i_read ) ) ) \
211 return VLC_EGENERIC; \
213 i_read = stream_Read( s, p_read, i_read ); \
214 if( i_read < (int64_t)__EVEN(p_chk->common.i_chunk_size ) + 8 ) \
217 return VLC_EGENERIC; \
222 #define AVI_READ( res, func, size ) \
223 if( i_read < size ) { \
225 return VLC_EGENERIC; \
228 res = func( p_read ); \
231 #define AVI_READCHUNK_EXIT( code ) \
235 static inline uint8_t GetB( uint8_t *ptr )
240 #define AVI_READ1BYTE( i_byte ) \
241 AVI_READ( i_byte, GetB, 1 )
243 #define AVI_READ2BYTES( i_word ) \
244 AVI_READ( i_word, GetWLE, 2 )
246 #define AVI_READ4BYTES( i_dword ) \
247 AVI_READ( i_dword, GetDWLE, 4 )
249 #define AVI_READ8BYTES( i_qword ) \
250 AVI_READ( i_qword, GetQWLE, 8 )
252 #define AVI_READFOURCC( i_dword ) \
253 AVI_READ( i_dword, GetFOURCC, 4 )
255 static int AVI_ChunkRead_avih( stream_t *s, avi_chunk_t *p_chk )
259 p_chk->common.i_chunk_fourcc = AVIFOURCC_avih;
260 AVI_READ4BYTES( p_chk->avih.i_microsecperframe);
261 AVI_READ4BYTES( p_chk->avih.i_maxbytespersec );
262 AVI_READ4BYTES( p_chk->avih.i_reserved1 );
263 AVI_READ4BYTES( p_chk->avih.i_flags );
264 AVI_READ4BYTES( p_chk->avih.i_totalframes );
265 AVI_READ4BYTES( p_chk->avih.i_initialframes );
266 AVI_READ4BYTES( p_chk->avih.i_streams );
267 AVI_READ4BYTES( p_chk->avih.i_suggestedbuffersize );
268 AVI_READ4BYTES( p_chk->avih.i_width );
269 AVI_READ4BYTES( p_chk->avih.i_height );
270 AVI_READ4BYTES( p_chk->avih.i_scale );
271 AVI_READ4BYTES( p_chk->avih.i_rate );
272 AVI_READ4BYTES( p_chk->avih.i_start );
273 AVI_READ4BYTES( p_chk->avih.i_length );
275 msg_Dbg( (vlc_object_t*)s,
276 "avih: streams:%d flags:%s%s%s%s %dx%d",
277 p_chk->avih.i_streams,
278 p_chk->avih.i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
279 p_chk->avih.i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
280 p_chk->avih.i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
281 p_chk->avih.i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"",
282 p_chk->avih.i_width, p_chk->avih.i_height );
284 AVI_READCHUNK_EXIT( VLC_SUCCESS );
287 static int AVI_ChunkRead_strh( stream_t *s, avi_chunk_t *p_chk )
291 AVI_READFOURCC( p_chk->strh.i_type );
292 AVI_READFOURCC( p_chk->strh.i_handler );
293 AVI_READ4BYTES( p_chk->strh.i_flags );
294 AVI_READ4BYTES( p_chk->strh.i_reserved1 );
295 AVI_READ4BYTES( p_chk->strh.i_initialframes );
296 AVI_READ4BYTES( p_chk->strh.i_scale );
297 AVI_READ4BYTES( p_chk->strh.i_rate );
298 AVI_READ4BYTES( p_chk->strh.i_start );
299 AVI_READ4BYTES( p_chk->strh.i_length );
300 AVI_READ4BYTES( p_chk->strh.i_suggestedbuffersize );
301 AVI_READ4BYTES( p_chk->strh.i_quality );
302 AVI_READ4BYTES( p_chk->strh.i_samplesize );
304 msg_Dbg( (vlc_object_t*)s,
305 "strh: type:%4.4s handler:0x%8.8x samplesize:%d %.2ffps",
306 (char*)&p_chk->strh.i_type,
307 p_chk->strh.i_handler,
308 p_chk->strh.i_samplesize,
309 ( p_chk->strh.i_scale ?
310 (float)p_chk->strh.i_rate / (float)p_chk->strh.i_scale : -1) );
313 AVI_READCHUNK_EXIT( VLC_SUCCESS );
316 static int AVI_ChunkRead_strf( stream_t *s, avi_chunk_t *p_chk )
321 if( p_chk->common.p_father == NULL )
323 msg_Err( (vlc_object_t*)s, "malformed avi file" );
324 AVI_READCHUNK_EXIT( VLC_EGENERIC );
326 if( !( p_strh = AVI_ChunkFind( p_chk->common.p_father, AVIFOURCC_strh, 0 ) ) )
328 msg_Err( (vlc_object_t*)s, "malformed avi file" );
329 AVI_READCHUNK_EXIT( VLC_EGENERIC );
332 switch( p_strh->strh.i_type )
334 case( AVIFOURCC_auds ):
335 p_chk->strf.auds.i_cat = AUDIO_ES;
336 p_chk->strf.auds.p_wf = malloc( __MAX( p_chk->common.i_chunk_size, sizeof( WAVEFORMATEX ) ) );
337 AVI_READ2BYTES( p_chk->strf.auds.p_wf->wFormatTag );
338 AVI_READ2BYTES( p_chk->strf.auds.p_wf->nChannels );
339 AVI_READ4BYTES( p_chk->strf.auds.p_wf->nSamplesPerSec );
340 AVI_READ4BYTES( p_chk->strf.auds.p_wf->nAvgBytesPerSec );
341 AVI_READ2BYTES( p_chk->strf.auds.p_wf->nBlockAlign );
342 AVI_READ2BYTES( p_chk->strf.auds.p_wf->wBitsPerSample );
343 if( p_chk->strf.auds.p_wf->wFormatTag != WAVE_FORMAT_PCM
344 && p_chk->common.i_chunk_size > sizeof( WAVEFORMATEX ) )
346 AVI_READ2BYTES( p_chk->strf.auds.p_wf->cbSize );
347 /* prevent segfault */
348 if( p_chk->strf.auds.p_wf->cbSize >
349 p_chk->common.i_chunk_size - sizeof( WAVEFORMATEX ) )
351 p_chk->strf.auds.p_wf->cbSize =
352 p_chk->common.i_chunk_size - sizeof( WAVEFORMATEX );
354 if( p_chk->strf.auds.p_wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE )
356 /* Found an extensible header atm almost nothing uses that. */
357 msg_Warn( (vlc_object_t*)s, "WAVE_FORMAT_EXTENSIBLE or "
358 "vorbis audio dectected: not supported" );
363 p_chk->strf.auds.p_wf->cbSize = 0;
365 if( p_chk->strf.auds.p_wf->cbSize > 0 )
367 memcpy( &p_chk->strf.auds.p_wf[1] ,
368 p_buff + 8 + sizeof( WAVEFORMATEX ), /* 8=fourcc+size */
369 p_chk->strf.auds.p_wf->cbSize );
372 msg_Dbg( (vlc_object_t*)s,
373 "strf: audio:0x%4.4x channels:%d %dHz %dbits/sample %dkb/s",
374 p_chk->strf.auds.p_wf->wFormatTag,
375 p_chk->strf.auds.p_wf->nChannels,
376 p_chk->strf.auds.p_wf->nSamplesPerSec,
377 p_chk->strf.auds.p_wf->wBitsPerSample,
378 p_chk->strf.auds.p_wf->nAvgBytesPerSec * 8 / 1024 );
381 case( AVIFOURCC_vids ):
382 p_strh->strh.i_samplesize = 0; /* XXX for ffmpeg avi file */
383 p_chk->strf.vids.i_cat = VIDEO_ES;
384 p_chk->strf.vids.p_bih = malloc( p_chk->common.i_chunk_size );
385 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biSize );
386 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biWidth );
387 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biHeight );
388 AVI_READ2BYTES( p_chk->strf.vids.p_bih->biPlanes );
389 AVI_READ2BYTES( p_chk->strf.vids.p_bih->biBitCount );
390 AVI_READFOURCC( p_chk->strf.vids.p_bih->biCompression );
391 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biSizeImage );
392 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biXPelsPerMeter );
393 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biYPelsPerMeter );
394 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biClrUsed );
395 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biClrImportant );
396 if( p_chk->strf.vids.p_bih->biSize > p_chk->common.i_chunk_size )
398 p_chk->strf.vids.p_bih->biSize = p_chk->common.i_chunk_size;
400 if( p_chk->common.i_chunk_size - sizeof(BITMAPINFOHEADER) > 0 )
402 memcpy( &p_chk->strf.vids.p_bih[1],
403 p_buff + 8 + sizeof(BITMAPINFOHEADER), /* 8=fourrc+size */
404 p_chk->common.i_chunk_size -sizeof(BITMAPINFOHEADER) );
407 msg_Dbg( (vlc_object_t*)s,
408 "strf: video:%4.4s %"PRIu32"x%"PRIu32" planes:%d %dbpp",
409 (char*)&p_chk->strf.vids.p_bih->biCompression,
410 (uint32_t)p_chk->strf.vids.p_bih->biWidth,
411 (uint32_t)p_chk->strf.vids.p_bih->biHeight,
412 p_chk->strf.vids.p_bih->biPlanes,
413 p_chk->strf.vids.p_bih->biBitCount );
417 msg_Warn( (vlc_object_t*)s, "unknown stream type" );
418 p_chk->strf.common.i_cat = UNKNOWN_ES;
421 AVI_READCHUNK_EXIT( VLC_SUCCESS );
423 static void AVI_ChunkFree_strf( avi_chunk_t *p_chk )
425 avi_chunk_strf_t *p_strf = (avi_chunk_strf_t*)p_chk;
426 if( p_strf->common.i_cat == AUDIO_ES )
428 FREENULL( p_strf->auds.p_wf );
430 else if( p_strf->common.i_cat == VIDEO_ES )
432 FREENULL( p_strf->vids.p_bih );
436 static int AVI_ChunkRead_strd( stream_t *s, avi_chunk_t *p_chk )
439 p_chk->strd.p_data = malloc( p_chk->common.i_chunk_size );
440 memcpy( p_chk->strd.p_data, p_buff + 8, p_chk->common.i_chunk_size );
441 AVI_READCHUNK_EXIT( VLC_SUCCESS );
444 static void AVI_ChunkFree_strd( avi_chunk_t *p_chk )
446 free( p_chk->strd.p_data );
449 static int AVI_ChunkRead_idx1( stream_t *s, avi_chunk_t *p_chk )
451 unsigned int i_count, i_index;
455 i_count = __MIN( (int64_t)p_chk->common.i_chunk_size, i_read ) / 16;
457 p_chk->idx1.i_entry_count = i_count;
458 p_chk->idx1.i_entry_max = i_count;
461 p_chk->idx1.entry = calloc( i_count, sizeof( idx1_entry_t ) );
463 for( i_index = 0; i_index < i_count ; i_index++ )
465 AVI_READFOURCC( p_chk->idx1.entry[i_index].i_fourcc );
466 AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_flags );
467 AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_pos );
468 AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_length );
473 p_chk->idx1.entry = NULL;
476 msg_Dbg( (vlc_object_t*)s, "idx1: index entry:%d", i_count );
478 AVI_READCHUNK_EXIT( VLC_SUCCESS );
481 static void AVI_ChunkFree_idx1( avi_chunk_t *p_chk )
483 p_chk->idx1.i_entry_count = 0;
484 p_chk->idx1.i_entry_max = 0;
485 FREENULL( p_chk->idx1.entry );
490 static int AVI_ChunkRead_indx( stream_t *s, avi_chunk_t *p_chk )
492 unsigned int i_count, i;
494 avi_chunk_indx_t *p_indx = (avi_chunk_indx_t*)p_chk;
498 AVI_READ2BYTES( p_indx->i_longsperentry );
499 AVI_READ1BYTE ( p_indx->i_indexsubtype );
500 AVI_READ1BYTE ( p_indx->i_indextype );
501 AVI_READ4BYTES( p_indx->i_entriesinuse );
503 AVI_READ4BYTES( p_indx->i_id );
504 p_indx->idx.std = NULL;
505 p_indx->idx.field = NULL;
506 p_indx->idx.super = NULL;
508 if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS && p_indx->i_indexsubtype == 0 )
510 AVI_READ8BYTES( p_indx->i_baseoffset );
511 AVI_READ4BYTES( i_dummy );
513 i_count = __MIN( p_indx->i_entriesinuse, i_read / 8 );
514 p_indx->i_entriesinuse = i_count;
515 p_indx->idx.std = calloc( i_count, sizeof( indx_std_entry_t ) );
517 for( i = 0; i < i_count; i++ )
519 AVI_READ4BYTES( p_indx->idx.std[i].i_offset );
520 AVI_READ4BYTES( p_indx->idx.std[i].i_size );
523 else if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS && p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
525 AVI_READ8BYTES( p_indx->i_baseoffset );
526 AVI_READ4BYTES( i_dummy );
528 i_count = __MIN( p_indx->i_entriesinuse, i_read / 12 );
529 p_indx->i_entriesinuse = i_count;
530 p_indx->idx.field = calloc( i_count, sizeof( indx_field_entry_t ) );
531 for( i = 0; i < i_count; i++ )
533 AVI_READ4BYTES( p_indx->idx.field[i].i_offset );
534 AVI_READ4BYTES( p_indx->idx.field[i].i_size );
535 AVI_READ4BYTES( p_indx->idx.field[i].i_offsetfield2 );
538 else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
540 p_indx->i_baseoffset = 0;
541 AVI_READ4BYTES( i_dummy );
542 AVI_READ4BYTES( i_dummy );
543 AVI_READ4BYTES( i_dummy );
545 i_count = __MIN( p_indx->i_entriesinuse, i_read / 16 );
546 p_indx->i_entriesinuse = i_count;
547 p_indx->idx.super = calloc( i_count, sizeof( indx_super_entry_t ) );
549 for( i = 0; i < i_count; i++ )
551 AVI_READ8BYTES( p_indx->idx.super[i].i_offset );
552 AVI_READ4BYTES( p_indx->idx.super[i].i_size );
553 AVI_READ4BYTES( p_indx->idx.super[i].i_duration );
558 msg_Warn( (vlc_object_t*)s, "unknow type/subtype index" );
562 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 );
564 AVI_READCHUNK_EXIT( VLC_SUCCESS );
566 static void AVI_ChunkFree_indx( avi_chunk_t *p_chk )
568 avi_chunk_indx_t *p_indx = (avi_chunk_indx_t*)p_chk;
570 FREENULL( p_indx->idx.std );
571 FREENULL( p_indx->idx.field );
572 FREENULL( p_indx->idx.super );
579 vlc_fourcc_t i_fourcc;
580 const char *psz_type;
583 { AVIFOURCC_IARL, "archive location" },
584 { AVIFOURCC_IART, "artist" },
585 { AVIFOURCC_ICMS, "commisioned" },
586 { AVIFOURCC_ICMT, "comments" },
587 { AVIFOURCC_ICOP, "copyright" },
588 { AVIFOURCC_ICRD, "creation date" },
589 { AVIFOURCC_ICRP, "cropped" },
590 { AVIFOURCC_IDIM, "dimensions" },
591 { AVIFOURCC_IDPI, "dots per inch" },
592 { AVIFOURCC_IENG, "engineer" },
593 { AVIFOURCC_IGNR, "genre" },
594 { AVIFOURCC_IKEY, "keywords" },
595 { AVIFOURCC_ILGT, "lightness" },
596 { AVIFOURCC_IMED, "medium" },
597 { AVIFOURCC_INAM, "name" },
598 { AVIFOURCC_IPLT, "palette setting" },
599 { AVIFOURCC_IPRD, "product" },
600 { AVIFOURCC_ISBJ, "subject" },
601 { AVIFOURCC_ISFT, "software" },
602 { AVIFOURCC_ISHP, "sharpness" },
603 { AVIFOURCC_ISRC, "source" },
604 { AVIFOURCC_ISRF, "source form" },
605 { AVIFOURCC_ITCH, "technician" },
606 { AVIFOURCC_ISMP, "time code" },
607 { AVIFOURCC_IDIT, "digitalization time" },
608 { AVIFOURCC_strn, "stream name" },
611 static int AVI_ChunkRead_strz( stream_t *s, avi_chunk_t *p_chk )
614 avi_chunk_STRING_t *p_strz = (avi_chunk_STRING_t*)p_chk;
617 for( i_index = 0;; i_index++)
619 if( !AVI_strz_type[i_index].i_fourcc ||
620 AVI_strz_type[i_index].i_fourcc == p_strz->i_chunk_fourcc )
625 p_strz->p_type = strdup( AVI_strz_type[i_index].psz_type );
626 p_strz->p_str = malloc( i_read + 1);
628 if( p_strz->i_chunk_size )
630 memcpy( p_strz->p_str, p_read, i_read );
632 p_strz->p_str[i_read] = 0;
635 msg_Dbg( (vlc_object_t*)s, "%4.4s: %s : %s",
636 (char*)&p_strz->i_chunk_fourcc, p_strz->p_type, p_strz->p_str);
638 AVI_READCHUNK_EXIT( VLC_SUCCESS );
640 static void AVI_ChunkFree_strz( avi_chunk_t *p_chk )
642 avi_chunk_STRING_t *p_strz = (avi_chunk_STRING_t*)p_chk;
643 FREENULL( p_strz->p_type );
644 FREENULL( p_strz->p_str );
647 static int AVI_ChunkRead_nothing( stream_t *s, avi_chunk_t *p_chk )
649 return AVI_NextChunk( s, p_chk );
651 static void AVI_ChunkFree_nothing( avi_chunk_t *p_chk )
658 vlc_fourcc_t i_fourcc;
659 int (*AVI_ChunkRead_function)( stream_t *s, avi_chunk_t *p_chk );
660 void (*AVI_ChunkFree_function)( avi_chunk_t *p_chk );
661 } AVI_Chunk_Function [] =
663 { AVIFOURCC_RIFF, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
664 { AVIFOURCC_ON2, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
665 { AVIFOURCC_LIST, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
666 { AVIFOURCC_avih, AVI_ChunkRead_avih, AVI_ChunkFree_nothing },
667 { AVIFOURCC_ON2h, AVI_ChunkRead_avih, AVI_ChunkFree_nothing },
668 { AVIFOURCC_strh, AVI_ChunkRead_strh, AVI_ChunkFree_nothing },
669 { AVIFOURCC_strf, AVI_ChunkRead_strf, AVI_ChunkFree_strf },
670 { AVIFOURCC_strd, AVI_ChunkRead_strd, AVI_ChunkFree_strd },
671 { AVIFOURCC_idx1, AVI_ChunkRead_idx1, AVI_ChunkFree_idx1 },
672 { AVIFOURCC_indx, AVI_ChunkRead_indx, AVI_ChunkFree_indx },
673 { AVIFOURCC_JUNK, AVI_ChunkRead_nothing, AVI_ChunkFree_nothing },
675 { AVIFOURCC_IARL, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
676 { AVIFOURCC_IARL, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
677 { AVIFOURCC_IART, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
678 { AVIFOURCC_ICMS, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
679 { AVIFOURCC_ICMT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
680 { AVIFOURCC_ICOP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
681 { AVIFOURCC_ICRD, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
682 { AVIFOURCC_ICRP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
683 { AVIFOURCC_IDIM, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
684 { AVIFOURCC_IDPI, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
685 { AVIFOURCC_IENG, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
686 { AVIFOURCC_IGNR, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
687 { AVIFOURCC_IKEY, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
688 { AVIFOURCC_ILGT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
689 { AVIFOURCC_IMED, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
690 { AVIFOURCC_INAM, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
691 { AVIFOURCC_IPLT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
692 { AVIFOURCC_IPRD, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
693 { AVIFOURCC_ISBJ, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
694 { AVIFOURCC_ISFT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
695 { AVIFOURCC_ISHP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
696 { AVIFOURCC_ISRC, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
697 { AVIFOURCC_ISRF, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
698 { AVIFOURCC_ITCH, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
699 { AVIFOURCC_ISMP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
700 { AVIFOURCC_IDIT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
701 { AVIFOURCC_strn, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
705 static int AVI_ChunkFunctionFind( vlc_fourcc_t i_fourcc )
707 unsigned int i_index;
708 for( i_index = 0; ; i_index++ )
710 if( ( AVI_Chunk_Function[i_index].i_fourcc == i_fourcc )||
711 ( AVI_Chunk_Function[i_index].i_fourcc == 0 ) )
718 int _AVI_ChunkRead( stream_t *s, avi_chunk_t *p_chk, avi_chunk_t *p_father )
727 if( AVI_ChunkReadCommon( s, p_chk ) )
729 msg_Warn( (vlc_object_t*)s, "cannot read one chunk" );
732 if( p_chk->common.i_chunk_fourcc == VLC_FOURCC( 0, 0, 0, 0 ) )
734 msg_Warn( (vlc_object_t*)s, "found null fourcc chunk (corrupted file?)" );
737 p_chk->common.p_father = p_father;
739 i_index = AVI_ChunkFunctionFind( p_chk->common.i_chunk_fourcc );
740 if( AVI_Chunk_Function[i_index].AVI_ChunkRead_function )
742 return AVI_Chunk_Function[i_index].AVI_ChunkRead_function( s, p_chk );
744 else if( ( ((char*)&p_chk->common.i_chunk_fourcc)[0] == 'i' &&
745 ((char*)&p_chk->common.i_chunk_fourcc)[1] == 'x' ) ||
746 ( ((char*)&p_chk->common.i_chunk_fourcc)[2] == 'i' &&
747 ((char*)&p_chk->common.i_chunk_fourcc)[3] == 'x' ) )
749 p_chk->common.i_chunk_fourcc = AVIFOURCC_indx;
750 return AVI_ChunkRead_indx( s, p_chk );
752 msg_Warn( (vlc_object_t*)s, "unknown chunk (not loaded)" );
753 return AVI_NextChunk( s, p_chk );
756 void _AVI_ChunkFree( stream_t *s,
760 avi_chunk_t *p_child, *p_next;
767 /* Free all child chunk */
768 p_child = p_chk->common.p_first;
771 p_next = p_child->common.p_next;
772 AVI_ChunkFree( s, p_child );
777 i_index = AVI_ChunkFunctionFind( p_chk->common.i_chunk_fourcc );
778 if( AVI_Chunk_Function[i_index].AVI_ChunkFree_function )
781 msg_Dbg( (vlc_object_t*)s, "free chunk %4.4s",
782 (char*)&p_chk->common.i_chunk_fourcc );
784 AVI_Chunk_Function[i_index].AVI_ChunkFree_function( p_chk);
788 msg_Warn( (vlc_object_t*)s, "unknown chunk (not unloaded)" );
790 p_chk->common.p_first = NULL;
791 p_chk->common.p_last = NULL;
796 static void AVI_ChunkDumpDebug_level( vlc_object_t *p_obj,
797 avi_chunk_t *p_chk, unsigned i_level )
800 avi_chunk_t *p_child;
803 if( i_level >= (sizeof(str) - 1)/5 )
806 memset( str, ' ', sizeof( str ) );
807 for( i = 1; i < i_level; i++ )
811 if( p_chk->common.i_chunk_fourcc == AVIFOURCC_RIFF ||
812 p_chk->common.i_chunk_fourcc == AVIFOURCC_ON2 ||
813 p_chk->common.i_chunk_fourcc == AVIFOURCC_LIST )
815 snprintf( &str[i_level * 5], sizeof(str) - 5*i_level,
816 "%c %4.4s-%4.4s size:%"PRIu64" pos:%"PRIu64,
818 (char*)&p_chk->common.i_chunk_fourcc,
819 (char*)&p_chk->list.i_type,
820 p_chk->common.i_chunk_size,
821 p_chk->common.i_chunk_pos );
825 snprintf( &str[i_level * 5], sizeof(str) - 5*i_level,
826 "+ %4.4s size:%"PRIu64" pos:%"PRIu64,
827 (char*)&p_chk->common.i_chunk_fourcc,
828 p_chk->common.i_chunk_size,
829 p_chk->common.i_chunk_pos );
831 msg_Dbg( p_obj, "%s", str );
833 p_child = p_chk->common.p_first;
836 AVI_ChunkDumpDebug_level( p_obj, p_child, i_level + 1 );
837 p_child = p_child->common.p_next;
841 int AVI_ChunkReadRoot( stream_t *s, avi_chunk_t *p_root )
843 avi_chunk_list_t *p_list = (avi_chunk_list_t*)p_root;
847 stream_Control( s, STREAM_CAN_FASTSEEK, &b_seekable );
849 p_list->i_chunk_pos = 0;
850 p_list->i_chunk_size = stream_Size( s );
851 p_list->i_chunk_fourcc = AVIFOURCC_LIST;
852 p_list->p_father = NULL;
853 p_list->p_next = NULL;
854 p_list->p_first = NULL;
855 p_list->p_last = NULL;
857 p_list->i_type = VLC_FOURCC( 'r', 'o', 'o', 't' );
861 p_chk = malloc( sizeof( avi_chunk_t ) );
862 memset( p_chk, 0, sizeof( avi_chunk_t ) );
863 if( !p_root->common.p_first )
865 p_root->common.p_first = p_chk;
869 p_root->common.p_last->common.p_next = p_chk;
871 p_root->common.p_last = p_chk;
873 if( AVI_ChunkRead( s, p_chk, p_root ) ||
874 ( stream_Tell( s ) >=
875 (off_t)p_chk->common.p_father->common.i_chunk_pos +
876 (off_t)__EVEN( p_chk->common.p_father->common.i_chunk_size ) ) )
880 /* If we can't seek then stop when we 've found first RIFF-AVI */
881 if( p_chk->common.i_chunk_fourcc == AVIFOURCC_RIFF &&
882 p_chk->list.i_type == AVIFOURCC_AVI && !b_seekable )
888 AVI_ChunkDumpDebug_level( (vlc_object_t*)s, p_root, 0 );
892 void AVI_ChunkFreeRoot( stream_t *s,
895 AVI_ChunkFree( s, p_chk );
899 int _AVI_ChunkCount( avi_chunk_t *p_chk, vlc_fourcc_t i_fourcc )
902 avi_chunk_t *p_child;
910 p_child = p_chk->common.p_first;
913 if( p_child->common.i_chunk_fourcc == i_fourcc ||
914 ( p_child->common.i_chunk_fourcc == AVIFOURCC_LIST &&
915 p_child->list.i_type == i_fourcc ) )
919 p_child = p_child->common.p_next;
924 void *_AVI_ChunkFind( avi_chunk_t *p_chk,
925 vlc_fourcc_t i_fourcc, int i_number )
927 avi_chunk_t *p_child;
932 p_child = p_chk->common.p_first;
936 if( p_child->common.i_chunk_fourcc == i_fourcc ||
937 ( p_child->common.i_chunk_fourcc == AVIFOURCC_LIST &&
938 p_child->list.i_type == i_fourcc ) )
948 p_child = p_child->common.p_next;