1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
5 * $Id: libavi.c,v 1.24 2003/08/22 22:52:48 fenrir Exp $
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
21 *****************************************************************************/
23 #include <stdlib.h> /* malloc(), free() */
26 #include <vlc/input.h>
28 #include "codecs.h" /* BITMAPINFOHEADER */
35 if( p ) {free( p ); p = NULL; }
37 #define __EVEN( x ) ( (x)&0x01 ? (x)+1 : (x) )
39 static vlc_fourcc_t GetFOURCC( byte_t *p_buff )
41 return VLC_FOURCC( p_buff[0], p_buff[1], p_buff[2], p_buff[3] );
44 #define AVI_ChunkFree( a, b ) _AVI_ChunkFree( (a), (avi_chunk_t*)(b) )
45 void _AVI_ChunkFree( stream_t *, avi_chunk_t *p_chk );
47 /****************************************************************************
49 * Basics functions to manipulates chunks
51 ****************************************************************************/
52 static int AVI_ChunkReadCommon( stream_t *s, avi_chunk_t *p_chk )
57 memset( p_chk, 0, sizeof( avi_chunk_t ) );
59 if( ( i_peek = stream_Peek( s, &p_peek, 8 ) ) < 8 )
64 p_chk->common.i_chunk_fourcc = GetFOURCC( p_peek );
65 p_chk->common.i_chunk_size = GetDWLE( p_peek + 4 );
66 p_chk->common.i_chunk_pos = stream_Tell( s );
68 p_chk->common.p_father = NULL;
69 p_chk->common.p_next = NULL;
70 p_chk->common.p_first = NULL;
71 p_chk->common.p_next = NULL;
74 msg_Dbg( (vlc_object_t*)s,
75 "Found Chunk fourcc:%8.8x (%4.4s) size:"I64Fd" pos:"I64Fd,
76 p_chk->common.i_chunk_fourcc,
77 (char*)&p_chk->common.i_chunk_fourcc,
78 p_chk->common.i_chunk_size,
79 p_chk->common.i_chunk_pos );
84 static int AVI_NextChunk( stream_t *s, avi_chunk_t *p_chk )
90 if( AVI_ChunkReadCommon( s, &chk ) )
97 if( p_chk->common.p_father )
99 if( p_chk->common.p_father->common.i_chunk_pos +
100 __EVEN( p_chk->common.p_father->common.i_chunk_size ) + 8 <
101 p_chk->common.i_chunk_pos +
102 __EVEN( p_chk->common.i_chunk_size ) + 8 )
107 return stream_Seek( s, p_chk->common.i_chunk_pos +
108 __EVEN( p_chk->common.i_chunk_size ) + 8 );
111 /****************************************************************************
113 * Functions to read chunks
115 ****************************************************************************/
116 static int AVI_ChunkRead_list( stream_t *s, avi_chunk_t *p_container )
120 vlc_bool_t b_seekable;
122 if( p_container->common.i_chunk_size < 8 )
125 msg_Warn( (vlc_object_t*)s, "empty list chunk" );
128 if( stream_Peek( s, &p_peek, 12 ) < 12 )
130 msg_Warn( (vlc_object_t*)s, "cannot peek while reading list chunk" );
134 stream_Control( s, STREAM_CAN_FASTSEEK, &b_seekable );
136 p_container->list.i_type = GetFOURCC( p_peek + 8 );
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 ) ||
176 ( stream_Tell( s ) >=
177 (off_t)p_chk->common.p_father->common.i_chunk_pos +
178 (off_t)__EVEN( p_chk->common.p_father->common.i_chunk_size ) ) )
182 /* If we can't seek then stop when we 've found LIST-movi */
183 if( p_chk->common.i_chunk_fourcc == AVIFOURCC_LIST &&
184 p_chk->list.i_type == AVIFOURCC_movi && !b_seekable )
190 msg_Dbg( (vlc_object_t*)s, "</list \'%4.4s\'>", (char*)&p_container->list.i_type );
195 #define AVI_READCHUNK_ENTER \
196 int64_t i_read = __EVEN(p_chk->common.i_chunk_size ) + 8; \
197 uint8_t *p_read, *p_buff; \
198 if( !( p_read = p_buff = malloc(i_read ) ) ) \
202 i_read = stream_Read( s, p_read, i_read ); \
206 #define AVI_READCHUNK_EXIT( code ) \
210 msg_Warn( (vlc_object_t*)s, "not enough data" ); \
214 #define AVI_READ1BYTE( i_byte ) \
219 #define AVI_READ2BYTES( i_word ) \
220 i_word = GetWLE( p_read ); \
224 #define AVI_READ4BYTES( i_dword ) \
225 i_dword = GetDWLE( p_read ); \
229 #define AVI_READ8BYTES( i_dword ) \
230 i_dword = GetQWLE( p_read ); \
234 #define AVI_READFOURCC( i_dword ) \
235 i_dword = GetFOURCC( p_read ); \
239 static int AVI_ChunkRead_avih( stream_t *s, avi_chunk_t *p_chk )
243 AVI_READ4BYTES( p_chk->avih.i_microsecperframe);
244 AVI_READ4BYTES( p_chk->avih.i_maxbytespersec );
245 AVI_READ4BYTES( p_chk->avih.i_reserved1 );
246 AVI_READ4BYTES( p_chk->avih.i_flags );
247 AVI_READ4BYTES( p_chk->avih.i_totalframes );
248 AVI_READ4BYTES( p_chk->avih.i_initialframes );
249 AVI_READ4BYTES( p_chk->avih.i_streams );
250 AVI_READ4BYTES( p_chk->avih.i_suggestedbuffersize );
251 AVI_READ4BYTES( p_chk->avih.i_width );
252 AVI_READ4BYTES( p_chk->avih.i_height );
253 AVI_READ4BYTES( p_chk->avih.i_scale );
254 AVI_READ4BYTES( p_chk->avih.i_rate );
255 AVI_READ4BYTES( p_chk->avih.i_start );
256 AVI_READ4BYTES( p_chk->avih.i_length );
258 msg_Dbg( (vlc_object_t*)s,
259 "avih: streams:%d flags:%s%s%s%s %dx%d",
260 p_chk->avih.i_streams,
261 p_chk->avih.i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
262 p_chk->avih.i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
263 p_chk->avih.i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
264 p_chk->avih.i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"",
265 p_chk->avih.i_width, p_chk->avih.i_height );
267 AVI_READCHUNK_EXIT( VLC_SUCCESS );
270 static int AVI_ChunkRead_strh( stream_t *s, avi_chunk_t *p_chk )
274 AVI_READFOURCC( p_chk->strh.i_type );
275 AVI_READFOURCC( p_chk->strh.i_handler );
276 AVI_READ4BYTES( p_chk->strh.i_flags );
277 AVI_READ4BYTES( p_chk->strh.i_reserved1 );
278 AVI_READ4BYTES( p_chk->strh.i_initialframes );
279 AVI_READ4BYTES( p_chk->strh.i_scale );
280 AVI_READ4BYTES( p_chk->strh.i_rate );
281 AVI_READ4BYTES( p_chk->strh.i_start );
282 AVI_READ4BYTES( p_chk->strh.i_length );
283 AVI_READ4BYTES( p_chk->strh.i_suggestedbuffersize );
284 AVI_READ4BYTES( p_chk->strh.i_quality );
285 AVI_READ4BYTES( p_chk->strh.i_samplesize );
287 msg_Dbg( (vlc_object_t*)s,
288 "strh: type:%4.4s handler:0x%8.8x samplesize:%d %.2ffps",
289 (char*)&p_chk->strh.i_type,
290 p_chk->strh.i_handler,
291 p_chk->strh.i_samplesize,
292 ( p_chk->strh.i_scale ?
293 (float)p_chk->strh.i_rate / (float)p_chk->strh.i_scale : -1) );
296 AVI_READCHUNK_EXIT( VLC_SUCCESS );
299 static int AVI_ChunkRead_strf( stream_t *s, avi_chunk_t *p_chk )
304 if( p_chk->common.p_father == NULL )
306 msg_Err( (vlc_object_t*)s, "malformed avi file" );
307 AVI_READCHUNK_EXIT( VLC_EGENERIC );
309 if( !( p_strh = AVI_ChunkFind( p_chk->common.p_father, AVIFOURCC_strh, 0 ) ) )
311 msg_Err( (vlc_object_t*)s, "malformed avi file" );
312 AVI_READCHUNK_EXIT( VLC_EGENERIC );
315 switch( p_strh->strh.i_type )
317 case( AVIFOURCC_auds ):
318 p_chk->strf.auds.i_cat = AUDIO_ES;
319 p_chk->strf.auds.p_wf = malloc( __MAX( p_chk->common.i_chunk_size, sizeof( WAVEFORMATEX ) ) );
320 AVI_READ2BYTES( p_chk->strf.auds.p_wf->wFormatTag );
321 AVI_READ2BYTES( p_chk->strf.auds.p_wf->nChannels );
322 AVI_READ4BYTES( p_chk->strf.auds.p_wf->nSamplesPerSec );
323 AVI_READ4BYTES( p_chk->strf.auds.p_wf->nAvgBytesPerSec );
324 AVI_READ2BYTES( p_chk->strf.auds.p_wf->nBlockAlign );
325 AVI_READ2BYTES( p_chk->strf.auds.p_wf->wBitsPerSample );
326 if( p_chk->strf.auds.p_wf->wFormatTag != WAVE_FORMAT_PCM
327 && p_chk->common.i_chunk_size > sizeof( WAVEFORMATEX ) )
329 AVI_READ2BYTES( p_chk->strf.auds.p_wf->cbSize );
330 /* prevent segfault */
331 if( p_chk->strf.auds.p_wf->cbSize >
332 p_chk->common.i_chunk_size - sizeof( WAVEFORMATEX ) )
334 p_chk->strf.auds.p_wf->cbSize =
335 p_chk->common.i_chunk_size - sizeof( WAVEFORMATEX );
340 p_chk->strf.auds.p_wf->cbSize = 0;
342 if( p_chk->strf.auds.p_wf->cbSize > 0 )
344 memcpy( &p_chk->strf.auds.p_wf[1] ,
345 p_buff + 8 + sizeof( WAVEFORMATEX ), // 8=fourrc+size
346 p_chk->strf.auds.p_wf->cbSize );
349 msg_Dbg( (vlc_object_t*)s,
350 "strf: audio:0x%4.4x channels:%d %dHz %dbits/sample %dkb/s",
351 p_chk->strf.auds.p_wf->wFormatTag,
352 p_chk->strf.auds.p_wf->nChannels,
353 p_chk->strf.auds.p_wf->nSamplesPerSec,
354 p_chk->strf.auds.p_wf->wBitsPerSample,
355 p_chk->strf.auds.p_wf->nAvgBytesPerSec * 8 / 1024 );
358 case( AVIFOURCC_vids ):
359 p_strh->strh.i_samplesize = 0; // XXX for ffmpeg avi file
360 p_chk->strf.vids.i_cat = VIDEO_ES;
361 p_chk->strf.vids.p_bih = malloc( p_chk->common.i_chunk_size );
362 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biSize );
363 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biWidth );
364 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biHeight );
365 AVI_READ2BYTES( p_chk->strf.vids.p_bih->biPlanes );
366 AVI_READ2BYTES( p_chk->strf.vids.p_bih->biBitCount );
367 AVI_READFOURCC( p_chk->strf.vids.p_bih->biCompression );
368 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biSizeImage );
369 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biXPelsPerMeter );
370 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biYPelsPerMeter );
371 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biClrUsed );
372 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biClrImportant );
373 if( p_chk->strf.vids.p_bih->biSize >
374 p_chk->common.i_chunk_size )
376 p_chk->strf.vids.p_bih->biSize = p_chk->common.i_chunk_size;
378 if( p_chk->strf.vids.p_bih->biSize - sizeof(BITMAPINFOHEADER) > 0 )
380 memcpy( &p_chk->strf.vids.p_bih[1],
381 p_buff + 8 + sizeof(BITMAPINFOHEADER), // 8=fourrc+size
382 p_chk->strf.vids.p_bih->biSize -
383 sizeof(BITMAPINFOHEADER) );
386 msg_Dbg( (vlc_object_t*)s,
387 "strf: video:%4.4s %dx%d planes:%d %dbpp",
388 (char*)&p_chk->strf.vids.p_bih->biCompression,
389 p_chk->strf.vids.p_bih->biWidth,
390 p_chk->strf.vids.p_bih->biHeight,
391 p_chk->strf.vids.p_bih->biPlanes,
392 p_chk->strf.vids.p_bih->biBitCount );
396 msg_Warn( (vlc_object_t*)s, "unknown stream type" );
397 p_chk->strf.common.i_cat = UNKNOWN_ES;
400 AVI_READCHUNK_EXIT( VLC_SUCCESS );
402 static void AVI_ChunkFree_strf( avi_chunk_t *p_chk )
404 avi_chunk_strf_t *p_strf = (avi_chunk_strf_t*)p_chk;
405 if( p_strf->common.i_cat == AUDIO_ES )
407 FREE( p_strf->auds.p_wf );
409 else if( p_strf->common.i_cat == VIDEO_ES )
411 FREE( p_strf->vids.p_bih );
415 static int AVI_ChunkRead_strd( stream_t *s, avi_chunk_t *p_chk )
418 p_chk->strd.p_data = malloc( p_chk->common.i_chunk_size );
419 memcpy( p_chk->strd.p_data,
421 p_chk->common.i_chunk_size );
422 AVI_READCHUNK_EXIT( VLC_SUCCESS );
425 static int AVI_ChunkRead_idx1( stream_t *s, avi_chunk_t *p_chk )
427 unsigned int i_count, i_index;
431 i_count = __MIN( (int64_t)p_chk->common.i_chunk_size, i_read ) / 16;
433 p_chk->idx1.i_entry_count = i_count;
434 p_chk->idx1.i_entry_max = i_count;
437 p_chk->idx1.entry = calloc( i_count, sizeof( idx1_entry_t ) );
439 for( i_index = 0; i_index < i_count ; i_index++ )
441 AVI_READFOURCC( p_chk->idx1.entry[i_index].i_fourcc );
442 AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_flags );
443 AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_pos );
444 AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_length );
449 p_chk->idx1.entry = NULL;
452 msg_Dbg( (vlc_object_t*)s, "idx1: index entry:%d", i_count );
454 AVI_READCHUNK_EXIT( VLC_SUCCESS );
457 static void AVI_ChunkFree_idx1( avi_chunk_t *p_chk )
459 p_chk->idx1.i_entry_count = 0;
460 p_chk->idx1.i_entry_max = 0;
461 FREE( p_chk->idx1.entry )
466 static int AVI_ChunkRead_indx( stream_t *s, avi_chunk_t *p_chk )
468 unsigned int i_count, i;
470 avi_chunk_indx_t *p_indx = (avi_chunk_indx_t*)p_chk;
474 AVI_READ2BYTES( p_indx->i_longsperentry );
475 AVI_READ1BYTE ( p_indx->i_indexsubtype );
476 AVI_READ1BYTE ( p_indx->i_indextype );
477 AVI_READ4BYTES( p_indx->i_entriesinuse );
479 AVI_READ4BYTES( p_indx->i_id );
480 p_indx->idx.std = NULL;
481 p_indx->idx.field = NULL;
482 p_indx->idx.super = NULL;
484 if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS && p_indx->i_indexsubtype == 0 )
486 AVI_READ8BYTES( p_indx->i_baseoffset );
487 AVI_READ4BYTES( i_dummy );
489 i_count = __MIN( p_indx->i_entriesinuse, i_read / 8 );
490 p_indx->i_entriesinuse = i_count;
491 p_indx->idx.std = calloc( sizeof( indx_std_entry_t ), i_count );
493 for( i = 0; i < i_count; i++ )
495 AVI_READ4BYTES( p_indx->idx.std[i].i_offset );
496 AVI_READ4BYTES( p_indx->idx.std[i].i_size );
499 else if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS && p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
501 AVI_READ8BYTES( p_indx->i_baseoffset );
502 AVI_READ4BYTES( i_dummy );
504 i_count = __MIN( p_indx->i_entriesinuse, i_read / 12 );
505 p_indx->i_entriesinuse = i_count;
506 p_indx->idx.field = calloc( sizeof( indx_field_entry_t ), i_count );
507 for( i = 0; i < i_count; i++ )
509 AVI_READ4BYTES( p_indx->idx.field[i].i_offset );
510 AVI_READ4BYTES( p_indx->idx.field[i].i_size );
511 AVI_READ4BYTES( p_indx->idx.field[i].i_offsetfield2 );
514 else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
516 p_indx->i_baseoffset = 0;
517 AVI_READ4BYTES( i_dummy );
518 AVI_READ4BYTES( i_dummy );
519 AVI_READ4BYTES( i_dummy );
521 i_count = __MIN( p_indx->i_entriesinuse, i_read / 16 );
522 p_indx->i_entriesinuse = i_count;
523 p_indx->idx.super = calloc( sizeof( indx_super_entry_t ), i_count );
525 for( i = 0; i < i_count; i++ )
527 AVI_READ8BYTES( p_indx->idx.super[i].i_offset );
528 AVI_READ4BYTES( p_indx->idx.super[i].i_size );
529 AVI_READ4BYTES( p_indx->idx.super[i].i_duration );
534 msg_Warn( (vlc_object_t*)s, "unknow type/subtype index" );
538 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 );
540 AVI_READCHUNK_EXIT( VLC_SUCCESS );
542 static void AVI_ChunkFree_indx( avi_chunk_t *p_chk )
544 avi_chunk_indx_t *p_indx = (avi_chunk_indx_t*)p_chk;
546 FREE( p_indx->idx.std );
547 FREE( p_indx->idx.field );
548 FREE( p_indx->idx.super );
555 vlc_fourcc_t i_fourcc;
559 { AVIFOURCC_IARL, "archive location" },
560 { AVIFOURCC_IART, "artist" },
561 { AVIFOURCC_ICMS, "commisioned" },
562 { AVIFOURCC_ICMT, "comments" },
563 { AVIFOURCC_ICOP, "copyright" },
564 { AVIFOURCC_ICRD, "creation date" },
565 { AVIFOURCC_ICRP, "cropped" },
566 { AVIFOURCC_IDIM, "dimensions" },
567 { AVIFOURCC_IDPI, "dots per inch" },
568 { AVIFOURCC_IENG, "enginner" },
569 { AVIFOURCC_IGNR, "genre" },
570 { AVIFOURCC_IKEY, "keywords" },
571 { AVIFOURCC_ILGT, "lightness" },
572 { AVIFOURCC_IMED, "medium" },
573 { AVIFOURCC_INAM, "name" },
574 { AVIFOURCC_IPLT, "palette setting" },
575 { AVIFOURCC_IPRD, "product" },
576 { AVIFOURCC_ISBJ, "subject" },
577 { AVIFOURCC_ISFT, "software" },
578 { AVIFOURCC_ISHP, "sharpness" },
579 { AVIFOURCC_ISRC, "source" },
580 { AVIFOURCC_ISRF, "source form" },
581 { AVIFOURCC_ITCH, "technician" },
582 { AVIFOURCC_ISMP, "time code" },
583 { AVIFOURCC_IDIT, "digitalization time" },
584 { AVIFOURCC_strn, "stream name" },
587 static int AVI_ChunkRead_strz( stream_t *s, avi_chunk_t *p_chk )
590 avi_chunk_STRING_t *p_strz = (avi_chunk_STRING_t*)p_chk;
593 for( i_index = 0;; i_index++)
595 if( !AVI_strz_type[i_index].i_fourcc ||
596 AVI_strz_type[i_index].i_fourcc == p_strz->i_chunk_fourcc )
601 p_strz->p_type = strdup( AVI_strz_type[i_index].psz_type );
602 p_strz->p_str = malloc( i_read + 1);
604 if( p_strz->i_chunk_size )
606 memcpy( p_strz->p_str, p_read, i_read );
608 p_strz->p_str[i_read] = 0;
611 msg_Dbg( (vlc_object_t*)s, "%4.4s: %s : %s",
612 (char*)&p_strz->i_chunk_fourcc, p_strz->p_type, p_strz->p_str);
614 AVI_READCHUNK_EXIT( VLC_SUCCESS );
616 static void AVI_ChunkFree_strz( avi_chunk_t *p_chk )
618 avi_chunk_STRING_t *p_strz = (avi_chunk_STRING_t*)p_chk;
619 FREE( p_strz->p_type );
620 FREE( p_strz->p_str );
623 static int AVI_ChunkRead_nothing( stream_t *s, avi_chunk_t *p_chk )
625 return AVI_NextChunk( s, p_chk );
627 static void AVI_ChunkFree_nothing( avi_chunk_t *p_chk )
634 vlc_fourcc_t i_fourcc;
635 int (*AVI_ChunkRead_function)( stream_t *s, avi_chunk_t *p_chk );
636 void (*AVI_ChunkFree_function)( avi_chunk_t *p_chk );
637 } AVI_Chunk_Function [] =
639 { AVIFOURCC_RIFF, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
640 { AVIFOURCC_LIST, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
641 { AVIFOURCC_avih, AVI_ChunkRead_avih, AVI_ChunkFree_nothing },
642 { AVIFOURCC_strh, AVI_ChunkRead_strh, AVI_ChunkFree_nothing },
643 { AVIFOURCC_strf, AVI_ChunkRead_strf, AVI_ChunkFree_strf },
644 { AVIFOURCC_strd, AVI_ChunkRead_strd, AVI_ChunkFree_nothing },
645 { AVIFOURCC_idx1, AVI_ChunkRead_idx1, AVI_ChunkFree_idx1 },
646 { AVIFOURCC_indx, AVI_ChunkRead_indx, AVI_ChunkFree_indx },
647 { AVIFOURCC_JUNK, AVI_ChunkRead_nothing, AVI_ChunkFree_nothing },
649 { AVIFOURCC_IARL, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
650 { AVIFOURCC_IARL, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
651 { AVIFOURCC_IART, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
652 { AVIFOURCC_ICMS, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
653 { AVIFOURCC_ICMT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
654 { AVIFOURCC_ICOP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
655 { AVIFOURCC_ICRD, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
656 { AVIFOURCC_ICRP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
657 { AVIFOURCC_IDIM, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
658 { AVIFOURCC_IDPI, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
659 { AVIFOURCC_IENG, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
660 { AVIFOURCC_IGNR, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
661 { AVIFOURCC_IKEY, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
662 { AVIFOURCC_ILGT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
663 { AVIFOURCC_IMED, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
664 { AVIFOURCC_INAM, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
665 { AVIFOURCC_IPLT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
666 { AVIFOURCC_IPRD, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
667 { AVIFOURCC_ISBJ, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
668 { AVIFOURCC_ISFT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
669 { AVIFOURCC_ISHP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
670 { AVIFOURCC_ISRC, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
671 { AVIFOURCC_ISRF, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
672 { AVIFOURCC_ITCH, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
673 { AVIFOURCC_ISMP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
674 { AVIFOURCC_IDIT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
675 { AVIFOURCC_strn, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
679 static int AVI_ChunkFunctionFind( vlc_fourcc_t i_fourcc )
681 unsigned int i_index;
682 for( i_index = 0; ; i_index++ )
684 if( ( AVI_Chunk_Function[i_index].i_fourcc == i_fourcc )||
685 ( AVI_Chunk_Function[i_index].i_fourcc == 0 ) )
692 int _AVI_ChunkRead( stream_t *s, avi_chunk_t *p_chk, avi_chunk_t *p_father )
701 if( AVI_ChunkReadCommon( s, p_chk ) )
703 msg_Warn( (vlc_object_t*)s, "cannot read one chunk" );
706 if( p_chk->common.i_chunk_fourcc == VLC_FOURCC( 0, 0, 0, 0 ) )
708 msg_Warn( (vlc_object_t*)s, "found null fourcc chunk (corrupted file?)" );
711 p_chk->common.p_father = p_father;
713 i_index = AVI_ChunkFunctionFind( p_chk->common.i_chunk_fourcc );
714 if( AVI_Chunk_Function[i_index].AVI_ChunkRead_function )
716 return AVI_Chunk_Function[i_index].AVI_ChunkRead_function( s, p_chk );
718 else if( ((char*)&p_chk->common.i_chunk_fourcc)[0] == 'i' &&
719 ((char*)&p_chk->common.i_chunk_fourcc)[1] == 'x' )
721 p_chk->common.i_chunk_fourcc = AVIFOURCC_indx;
722 return AVI_ChunkRead_indx( s, p_chk );
724 msg_Warn( (vlc_object_t*)s, "unknown chunk (not loaded)" );
725 return AVI_NextChunk( s, p_chk );
728 void _AVI_ChunkFree( stream_t *s,
732 avi_chunk_t *p_child, *p_next;
739 /* Free all child chunk */
740 p_child = p_chk->common.p_first;
743 p_next = p_child->common.p_next;
744 AVI_ChunkFree( s, p_child );
749 i_index = AVI_ChunkFunctionFind( p_chk->common.i_chunk_fourcc );
750 if( AVI_Chunk_Function[i_index].AVI_ChunkFree_function )
753 msg_Dbg( (vlc_object_t*)s, "free chunk %4.4s",
754 (char*)&p_chk->common.i_chunk_fourcc );
756 AVI_Chunk_Function[i_index].AVI_ChunkFree_function( p_chk);
760 msg_Warn( (vlc_object_t*)s, "unknown chunk (not unloaded)" );
762 p_chk->common.p_first = NULL;
763 p_chk->common.p_last = NULL;
768 static void AVI_ChunkDumpDebug_level( vlc_object_t *p_obj,
769 avi_chunk_t *p_chk, int i_level )
773 avi_chunk_t *p_child;
775 memset( str, ' ', sizeof( str ) );
776 for( i = 1; i < i_level; i++ )
780 if( p_chk->common.i_chunk_fourcc == AVIFOURCC_RIFF||
781 p_chk->common.i_chunk_fourcc == AVIFOURCC_LIST )
783 sprintf( str + i_level * 5,
784 "%c %4.4s-%4.4s size:"I64Fu" pos:"I64Fu,
786 (char*)&p_chk->common.i_chunk_fourcc,
787 (char*)&p_chk->list.i_type,
788 p_chk->common.i_chunk_size,
789 p_chk->common.i_chunk_pos );
793 sprintf( str + i_level * 5,
794 "+ %4.4s size:"I64Fu" pos:"I64Fu,
795 (char*)&p_chk->common.i_chunk_fourcc,
796 p_chk->common.i_chunk_size,
797 p_chk->common.i_chunk_pos );
799 msg_Dbg( p_obj, "%s", str );
801 p_child = p_chk->common.p_first;
804 AVI_ChunkDumpDebug_level( p_obj, p_child, i_level + 1 );
805 p_child = p_child->common.p_next;
809 int AVI_ChunkReadRoot( stream_t *s, avi_chunk_t *p_root )
811 avi_chunk_list_t *p_list = (avi_chunk_list_t*)p_root;
813 vlc_bool_t b_seekable;
815 stream_Control( s, STREAM_CAN_FASTSEEK, &b_seekable );
817 p_list->i_chunk_pos = 0;
818 p_list->i_chunk_size = stream_Size( s );
819 p_list->i_chunk_fourcc = AVIFOURCC_LIST;
820 p_list->p_father = NULL;
821 p_list->p_next = NULL;
822 p_list->p_first = NULL;
823 p_list->p_last = NULL;
825 p_list->i_type = VLC_FOURCC( 'r', 'o', 'o', 't' );
829 p_chk = malloc( sizeof( avi_chunk_t ) );
830 memset( p_chk, 0, sizeof( avi_chunk_t ) );
831 if( !p_root->common.p_first )
833 p_root->common.p_first = p_chk;
837 p_root->common.p_last->common.p_next = p_chk;
839 p_root->common.p_last = p_chk;
841 if( AVI_ChunkRead( s, p_chk, p_root ) ||
842 ( stream_Tell( s ) >=
843 (off_t)p_chk->common.p_father->common.i_chunk_pos +
844 (off_t)__EVEN( p_chk->common.p_father->common.i_chunk_size ) ) )
848 /* If we can't seek then stop when we 've found first RIFF-AVI */
849 if( p_chk->common.i_chunk_fourcc == AVIFOURCC_RIFF &&
850 p_chk->list.i_type == AVIFOURCC_AVI && !b_seekable )
856 AVI_ChunkDumpDebug_level( (vlc_object_t*)s, p_root, 0 );
860 void AVI_ChunkFreeRoot( stream_t *s,
863 AVI_ChunkFree( s, p_chk );
867 int _AVI_ChunkCount( avi_chunk_t *p_chk, vlc_fourcc_t i_fourcc )
870 avi_chunk_t *p_child;
878 p_child = p_chk->common.p_first;
881 if( p_child->common.i_chunk_fourcc == i_fourcc ||
882 ( p_child->common.i_chunk_fourcc == AVIFOURCC_LIST &&
883 p_child->list.i_type == i_fourcc ) )
887 p_child = p_child->common.p_next;
892 void *_AVI_ChunkFind( avi_chunk_t *p_chk,
893 vlc_fourcc_t i_fourcc, int i_number )
895 avi_chunk_t *p_child;
900 p_child = p_chk->common.p_first;
904 if( p_child->common.i_chunk_fourcc == i_fourcc ||
905 ( p_child->common.i_chunk_fourcc == AVIFOURCC_LIST &&
906 p_child->list.i_type == i_fourcc ) )
916 p_child = p_child->common.p_next;