1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
5 * $Id: libavi.c,v 1.25 2003/08/30 02:03:44 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 ) ) ) \
200 return VLC_EGENERIC; \
202 i_read = stream_Read( s, p_read, i_read ); \
203 if( i_read < (int64_t)__EVEN(p_chk->common.i_chunk_size ) + 8 ) \
205 return VLC_EGENERIC; \
210 #define AVI_READCHUNK_EXIT( code ) \
214 msg_Warn( (vlc_object_t*)s, "not enough data" ); \
218 #define AVI_READ1BYTE( i_byte ) \
223 #define AVI_READ2BYTES( i_word ) \
224 i_word = GetWLE( p_read ); \
228 #define AVI_READ4BYTES( i_dword ) \
229 i_dword = GetDWLE( p_read ); \
233 #define AVI_READ8BYTES( i_dword ) \
234 i_dword = GetQWLE( p_read ); \
238 #define AVI_READFOURCC( i_dword ) \
239 i_dword = GetFOURCC( p_read ); \
243 static int AVI_ChunkRead_avih( stream_t *s, avi_chunk_t *p_chk )
247 AVI_READ4BYTES( p_chk->avih.i_microsecperframe);
248 AVI_READ4BYTES( p_chk->avih.i_maxbytespersec );
249 AVI_READ4BYTES( p_chk->avih.i_reserved1 );
250 AVI_READ4BYTES( p_chk->avih.i_flags );
251 AVI_READ4BYTES( p_chk->avih.i_totalframes );
252 AVI_READ4BYTES( p_chk->avih.i_initialframes );
253 AVI_READ4BYTES( p_chk->avih.i_streams );
254 AVI_READ4BYTES( p_chk->avih.i_suggestedbuffersize );
255 AVI_READ4BYTES( p_chk->avih.i_width );
256 AVI_READ4BYTES( p_chk->avih.i_height );
257 AVI_READ4BYTES( p_chk->avih.i_scale );
258 AVI_READ4BYTES( p_chk->avih.i_rate );
259 AVI_READ4BYTES( p_chk->avih.i_start );
260 AVI_READ4BYTES( p_chk->avih.i_length );
262 msg_Dbg( (vlc_object_t*)s,
263 "avih: streams:%d flags:%s%s%s%s %dx%d",
264 p_chk->avih.i_streams,
265 p_chk->avih.i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
266 p_chk->avih.i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
267 p_chk->avih.i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
268 p_chk->avih.i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"",
269 p_chk->avih.i_width, p_chk->avih.i_height );
271 AVI_READCHUNK_EXIT( VLC_SUCCESS );
274 static int AVI_ChunkRead_strh( stream_t *s, avi_chunk_t *p_chk )
278 AVI_READFOURCC( p_chk->strh.i_type );
279 AVI_READFOURCC( p_chk->strh.i_handler );
280 AVI_READ4BYTES( p_chk->strh.i_flags );
281 AVI_READ4BYTES( p_chk->strh.i_reserved1 );
282 AVI_READ4BYTES( p_chk->strh.i_initialframes );
283 AVI_READ4BYTES( p_chk->strh.i_scale );
284 AVI_READ4BYTES( p_chk->strh.i_rate );
285 AVI_READ4BYTES( p_chk->strh.i_start );
286 AVI_READ4BYTES( p_chk->strh.i_length );
287 AVI_READ4BYTES( p_chk->strh.i_suggestedbuffersize );
288 AVI_READ4BYTES( p_chk->strh.i_quality );
289 AVI_READ4BYTES( p_chk->strh.i_samplesize );
291 msg_Dbg( (vlc_object_t*)s,
292 "strh: type:%4.4s handler:0x%8.8x samplesize:%d %.2ffps",
293 (char*)&p_chk->strh.i_type,
294 p_chk->strh.i_handler,
295 p_chk->strh.i_samplesize,
296 ( p_chk->strh.i_scale ?
297 (float)p_chk->strh.i_rate / (float)p_chk->strh.i_scale : -1) );
300 AVI_READCHUNK_EXIT( VLC_SUCCESS );
303 static int AVI_ChunkRead_strf( stream_t *s, avi_chunk_t *p_chk )
308 if( p_chk->common.p_father == NULL )
310 msg_Err( (vlc_object_t*)s, "malformed avi file" );
311 AVI_READCHUNK_EXIT( VLC_EGENERIC );
313 if( !( p_strh = AVI_ChunkFind( p_chk->common.p_father, AVIFOURCC_strh, 0 ) ) )
315 msg_Err( (vlc_object_t*)s, "malformed avi file" );
316 AVI_READCHUNK_EXIT( VLC_EGENERIC );
319 switch( p_strh->strh.i_type )
321 case( AVIFOURCC_auds ):
322 p_chk->strf.auds.i_cat = AUDIO_ES;
323 p_chk->strf.auds.p_wf = malloc( __MAX( p_chk->common.i_chunk_size, sizeof( WAVEFORMATEX ) ) );
324 AVI_READ2BYTES( p_chk->strf.auds.p_wf->wFormatTag );
325 AVI_READ2BYTES( p_chk->strf.auds.p_wf->nChannels );
326 AVI_READ4BYTES( p_chk->strf.auds.p_wf->nSamplesPerSec );
327 AVI_READ4BYTES( p_chk->strf.auds.p_wf->nAvgBytesPerSec );
328 AVI_READ2BYTES( p_chk->strf.auds.p_wf->nBlockAlign );
329 AVI_READ2BYTES( p_chk->strf.auds.p_wf->wBitsPerSample );
330 if( p_chk->strf.auds.p_wf->wFormatTag != WAVE_FORMAT_PCM
331 && p_chk->common.i_chunk_size > sizeof( WAVEFORMATEX ) )
333 AVI_READ2BYTES( p_chk->strf.auds.p_wf->cbSize );
334 /* prevent segfault */
335 if( p_chk->strf.auds.p_wf->cbSize >
336 p_chk->common.i_chunk_size - sizeof( WAVEFORMATEX ) )
338 p_chk->strf.auds.p_wf->cbSize =
339 p_chk->common.i_chunk_size - sizeof( WAVEFORMATEX );
344 p_chk->strf.auds.p_wf->cbSize = 0;
346 if( p_chk->strf.auds.p_wf->cbSize > 0 )
348 memcpy( &p_chk->strf.auds.p_wf[1] ,
349 p_buff + 8 + sizeof( WAVEFORMATEX ), // 8=fourrc+size
350 p_chk->strf.auds.p_wf->cbSize );
353 msg_Dbg( (vlc_object_t*)s,
354 "strf: audio:0x%4.4x channels:%d %dHz %dbits/sample %dkb/s",
355 p_chk->strf.auds.p_wf->wFormatTag,
356 p_chk->strf.auds.p_wf->nChannels,
357 p_chk->strf.auds.p_wf->nSamplesPerSec,
358 p_chk->strf.auds.p_wf->wBitsPerSample,
359 p_chk->strf.auds.p_wf->nAvgBytesPerSec * 8 / 1024 );
362 case( AVIFOURCC_vids ):
363 p_strh->strh.i_samplesize = 0; // XXX for ffmpeg avi file
364 p_chk->strf.vids.i_cat = VIDEO_ES;
365 p_chk->strf.vids.p_bih = malloc( p_chk->common.i_chunk_size );
366 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biSize );
367 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biWidth );
368 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biHeight );
369 AVI_READ2BYTES( p_chk->strf.vids.p_bih->biPlanes );
370 AVI_READ2BYTES( p_chk->strf.vids.p_bih->biBitCount );
371 AVI_READFOURCC( p_chk->strf.vids.p_bih->biCompression );
372 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biSizeImage );
373 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biXPelsPerMeter );
374 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biYPelsPerMeter );
375 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biClrUsed );
376 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biClrImportant );
377 if( p_chk->strf.vids.p_bih->biSize >
378 p_chk->common.i_chunk_size )
380 p_chk->strf.vids.p_bih->biSize = p_chk->common.i_chunk_size;
382 if( p_chk->strf.vids.p_bih->biSize - sizeof(BITMAPINFOHEADER) > 0 )
384 memcpy( &p_chk->strf.vids.p_bih[1],
385 p_buff + 8 + sizeof(BITMAPINFOHEADER), // 8=fourrc+size
386 p_chk->strf.vids.p_bih->biSize -
387 sizeof(BITMAPINFOHEADER) );
390 msg_Dbg( (vlc_object_t*)s,
391 "strf: video:%4.4s %dx%d planes:%d %dbpp",
392 (char*)&p_chk->strf.vids.p_bih->biCompression,
393 p_chk->strf.vids.p_bih->biWidth,
394 p_chk->strf.vids.p_bih->biHeight,
395 p_chk->strf.vids.p_bih->biPlanes,
396 p_chk->strf.vids.p_bih->biBitCount );
400 msg_Warn( (vlc_object_t*)s, "unknown stream type" );
401 p_chk->strf.common.i_cat = UNKNOWN_ES;
404 AVI_READCHUNK_EXIT( VLC_SUCCESS );
406 static void AVI_ChunkFree_strf( avi_chunk_t *p_chk )
408 avi_chunk_strf_t *p_strf = (avi_chunk_strf_t*)p_chk;
409 if( p_strf->common.i_cat == AUDIO_ES )
411 FREE( p_strf->auds.p_wf );
413 else if( p_strf->common.i_cat == VIDEO_ES )
415 FREE( p_strf->vids.p_bih );
419 static int AVI_ChunkRead_strd( stream_t *s, avi_chunk_t *p_chk )
422 p_chk->strd.p_data = malloc( p_chk->common.i_chunk_size );
423 memcpy( p_chk->strd.p_data,
425 p_chk->common.i_chunk_size );
426 AVI_READCHUNK_EXIT( VLC_SUCCESS );
429 static int AVI_ChunkRead_idx1( stream_t *s, avi_chunk_t *p_chk )
431 unsigned int i_count, i_index;
435 i_count = __MIN( (int64_t)p_chk->common.i_chunk_size, i_read ) / 16;
437 p_chk->idx1.i_entry_count = i_count;
438 p_chk->idx1.i_entry_max = i_count;
441 p_chk->idx1.entry = calloc( i_count, sizeof( idx1_entry_t ) );
443 for( i_index = 0; i_index < i_count ; i_index++ )
445 AVI_READFOURCC( p_chk->idx1.entry[i_index].i_fourcc );
446 AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_flags );
447 AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_pos );
448 AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_length );
453 p_chk->idx1.entry = NULL;
456 msg_Dbg( (vlc_object_t*)s, "idx1: index entry:%d", i_count );
458 AVI_READCHUNK_EXIT( VLC_SUCCESS );
461 static void AVI_ChunkFree_idx1( avi_chunk_t *p_chk )
463 p_chk->idx1.i_entry_count = 0;
464 p_chk->idx1.i_entry_max = 0;
465 FREE( p_chk->idx1.entry )
470 static int AVI_ChunkRead_indx( stream_t *s, avi_chunk_t *p_chk )
472 unsigned int i_count, i;
474 avi_chunk_indx_t *p_indx = (avi_chunk_indx_t*)p_chk;
478 AVI_READ2BYTES( p_indx->i_longsperentry );
479 AVI_READ1BYTE ( p_indx->i_indexsubtype );
480 AVI_READ1BYTE ( p_indx->i_indextype );
481 AVI_READ4BYTES( p_indx->i_entriesinuse );
483 AVI_READ4BYTES( p_indx->i_id );
484 p_indx->idx.std = NULL;
485 p_indx->idx.field = NULL;
486 p_indx->idx.super = NULL;
488 if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS && p_indx->i_indexsubtype == 0 )
490 AVI_READ8BYTES( p_indx->i_baseoffset );
491 AVI_READ4BYTES( i_dummy );
493 i_count = __MIN( p_indx->i_entriesinuse, i_read / 8 );
494 p_indx->i_entriesinuse = i_count;
495 p_indx->idx.std = calloc( sizeof( indx_std_entry_t ), i_count );
497 for( i = 0; i < i_count; i++ )
499 AVI_READ4BYTES( p_indx->idx.std[i].i_offset );
500 AVI_READ4BYTES( p_indx->idx.std[i].i_size );
503 else if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS && p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
505 AVI_READ8BYTES( p_indx->i_baseoffset );
506 AVI_READ4BYTES( i_dummy );
508 i_count = __MIN( p_indx->i_entriesinuse, i_read / 12 );
509 p_indx->i_entriesinuse = i_count;
510 p_indx->idx.field = calloc( sizeof( indx_field_entry_t ), i_count );
511 for( i = 0; i < i_count; i++ )
513 AVI_READ4BYTES( p_indx->idx.field[i].i_offset );
514 AVI_READ4BYTES( p_indx->idx.field[i].i_size );
515 AVI_READ4BYTES( p_indx->idx.field[i].i_offsetfield2 );
518 else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
520 p_indx->i_baseoffset = 0;
521 AVI_READ4BYTES( i_dummy );
522 AVI_READ4BYTES( i_dummy );
523 AVI_READ4BYTES( i_dummy );
525 i_count = __MIN( p_indx->i_entriesinuse, i_read / 16 );
526 p_indx->i_entriesinuse = i_count;
527 p_indx->idx.super = calloc( sizeof( indx_super_entry_t ), i_count );
529 for( i = 0; i < i_count; i++ )
531 AVI_READ8BYTES( p_indx->idx.super[i].i_offset );
532 AVI_READ4BYTES( p_indx->idx.super[i].i_size );
533 AVI_READ4BYTES( p_indx->idx.super[i].i_duration );
538 msg_Warn( (vlc_object_t*)s, "unknow type/subtype index" );
542 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 );
544 AVI_READCHUNK_EXIT( VLC_SUCCESS );
546 static void AVI_ChunkFree_indx( avi_chunk_t *p_chk )
548 avi_chunk_indx_t *p_indx = (avi_chunk_indx_t*)p_chk;
550 FREE( p_indx->idx.std );
551 FREE( p_indx->idx.field );
552 FREE( p_indx->idx.super );
559 vlc_fourcc_t i_fourcc;
563 { AVIFOURCC_IARL, "archive location" },
564 { AVIFOURCC_IART, "artist" },
565 { AVIFOURCC_ICMS, "commisioned" },
566 { AVIFOURCC_ICMT, "comments" },
567 { AVIFOURCC_ICOP, "copyright" },
568 { AVIFOURCC_ICRD, "creation date" },
569 { AVIFOURCC_ICRP, "cropped" },
570 { AVIFOURCC_IDIM, "dimensions" },
571 { AVIFOURCC_IDPI, "dots per inch" },
572 { AVIFOURCC_IENG, "enginner" },
573 { AVIFOURCC_IGNR, "genre" },
574 { AVIFOURCC_IKEY, "keywords" },
575 { AVIFOURCC_ILGT, "lightness" },
576 { AVIFOURCC_IMED, "medium" },
577 { AVIFOURCC_INAM, "name" },
578 { AVIFOURCC_IPLT, "palette setting" },
579 { AVIFOURCC_IPRD, "product" },
580 { AVIFOURCC_ISBJ, "subject" },
581 { AVIFOURCC_ISFT, "software" },
582 { AVIFOURCC_ISHP, "sharpness" },
583 { AVIFOURCC_ISRC, "source" },
584 { AVIFOURCC_ISRF, "source form" },
585 { AVIFOURCC_ITCH, "technician" },
586 { AVIFOURCC_ISMP, "time code" },
587 { AVIFOURCC_IDIT, "digitalization time" },
588 { AVIFOURCC_strn, "stream name" },
591 static int AVI_ChunkRead_strz( stream_t *s, avi_chunk_t *p_chk )
594 avi_chunk_STRING_t *p_strz = (avi_chunk_STRING_t*)p_chk;
597 for( i_index = 0;; i_index++)
599 if( !AVI_strz_type[i_index].i_fourcc ||
600 AVI_strz_type[i_index].i_fourcc == p_strz->i_chunk_fourcc )
605 p_strz->p_type = strdup( AVI_strz_type[i_index].psz_type );
606 p_strz->p_str = malloc( i_read + 1);
608 if( p_strz->i_chunk_size )
610 memcpy( p_strz->p_str, p_read, i_read );
612 p_strz->p_str[i_read] = 0;
615 msg_Dbg( (vlc_object_t*)s, "%4.4s: %s : %s",
616 (char*)&p_strz->i_chunk_fourcc, p_strz->p_type, p_strz->p_str);
618 AVI_READCHUNK_EXIT( VLC_SUCCESS );
620 static void AVI_ChunkFree_strz( avi_chunk_t *p_chk )
622 avi_chunk_STRING_t *p_strz = (avi_chunk_STRING_t*)p_chk;
623 FREE( p_strz->p_type );
624 FREE( p_strz->p_str );
627 static int AVI_ChunkRead_nothing( stream_t *s, avi_chunk_t *p_chk )
629 return AVI_NextChunk( s, p_chk );
631 static void AVI_ChunkFree_nothing( avi_chunk_t *p_chk )
638 vlc_fourcc_t i_fourcc;
639 int (*AVI_ChunkRead_function)( stream_t *s, avi_chunk_t *p_chk );
640 void (*AVI_ChunkFree_function)( avi_chunk_t *p_chk );
641 } AVI_Chunk_Function [] =
643 { AVIFOURCC_RIFF, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
644 { AVIFOURCC_LIST, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
645 { AVIFOURCC_avih, AVI_ChunkRead_avih, AVI_ChunkFree_nothing },
646 { AVIFOURCC_strh, AVI_ChunkRead_strh, AVI_ChunkFree_nothing },
647 { AVIFOURCC_strf, AVI_ChunkRead_strf, AVI_ChunkFree_strf },
648 { AVIFOURCC_strd, AVI_ChunkRead_strd, AVI_ChunkFree_nothing },
649 { AVIFOURCC_idx1, AVI_ChunkRead_idx1, AVI_ChunkFree_idx1 },
650 { AVIFOURCC_indx, AVI_ChunkRead_indx, AVI_ChunkFree_indx },
651 { AVIFOURCC_JUNK, AVI_ChunkRead_nothing, AVI_ChunkFree_nothing },
653 { AVIFOURCC_IARL, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
654 { AVIFOURCC_IARL, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
655 { AVIFOURCC_IART, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
656 { AVIFOURCC_ICMS, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
657 { AVIFOURCC_ICMT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
658 { AVIFOURCC_ICOP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
659 { AVIFOURCC_ICRD, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
660 { AVIFOURCC_ICRP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
661 { AVIFOURCC_IDIM, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
662 { AVIFOURCC_IDPI, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
663 { AVIFOURCC_IENG, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
664 { AVIFOURCC_IGNR, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
665 { AVIFOURCC_IKEY, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
666 { AVIFOURCC_ILGT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
667 { AVIFOURCC_IMED, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
668 { AVIFOURCC_INAM, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
669 { AVIFOURCC_IPLT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
670 { AVIFOURCC_IPRD, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
671 { AVIFOURCC_ISBJ, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
672 { AVIFOURCC_ISFT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
673 { AVIFOURCC_ISHP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
674 { AVIFOURCC_ISRC, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
675 { AVIFOURCC_ISRF, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
676 { AVIFOURCC_ITCH, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
677 { AVIFOURCC_ISMP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
678 { AVIFOURCC_IDIT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
679 { AVIFOURCC_strn, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
683 static int AVI_ChunkFunctionFind( vlc_fourcc_t i_fourcc )
685 unsigned int i_index;
686 for( i_index = 0; ; i_index++ )
688 if( ( AVI_Chunk_Function[i_index].i_fourcc == i_fourcc )||
689 ( AVI_Chunk_Function[i_index].i_fourcc == 0 ) )
696 int _AVI_ChunkRead( stream_t *s, avi_chunk_t *p_chk, avi_chunk_t *p_father )
705 if( AVI_ChunkReadCommon( s, p_chk ) )
707 msg_Warn( (vlc_object_t*)s, "cannot read one chunk" );
710 if( p_chk->common.i_chunk_fourcc == VLC_FOURCC( 0, 0, 0, 0 ) )
712 msg_Warn( (vlc_object_t*)s, "found null fourcc chunk (corrupted file?)" );
715 p_chk->common.p_father = p_father;
717 i_index = AVI_ChunkFunctionFind( p_chk->common.i_chunk_fourcc );
718 if( AVI_Chunk_Function[i_index].AVI_ChunkRead_function )
720 return AVI_Chunk_Function[i_index].AVI_ChunkRead_function( s, p_chk );
722 else if( ((char*)&p_chk->common.i_chunk_fourcc)[0] == 'i' &&
723 ((char*)&p_chk->common.i_chunk_fourcc)[1] == 'x' )
725 p_chk->common.i_chunk_fourcc = AVIFOURCC_indx;
726 return AVI_ChunkRead_indx( s, p_chk );
728 msg_Warn( (vlc_object_t*)s, "unknown chunk (not loaded)" );
729 return AVI_NextChunk( s, p_chk );
732 void _AVI_ChunkFree( stream_t *s,
736 avi_chunk_t *p_child, *p_next;
743 /* Free all child chunk */
744 p_child = p_chk->common.p_first;
747 p_next = p_child->common.p_next;
748 AVI_ChunkFree( s, p_child );
753 i_index = AVI_ChunkFunctionFind( p_chk->common.i_chunk_fourcc );
754 if( AVI_Chunk_Function[i_index].AVI_ChunkFree_function )
757 msg_Dbg( (vlc_object_t*)s, "free chunk %4.4s",
758 (char*)&p_chk->common.i_chunk_fourcc );
760 AVI_Chunk_Function[i_index].AVI_ChunkFree_function( p_chk);
764 msg_Warn( (vlc_object_t*)s, "unknown chunk (not unloaded)" );
766 p_chk->common.p_first = NULL;
767 p_chk->common.p_last = NULL;
772 static void AVI_ChunkDumpDebug_level( vlc_object_t *p_obj,
773 avi_chunk_t *p_chk, int i_level )
777 avi_chunk_t *p_child;
779 memset( str, ' ', sizeof( str ) );
780 for( i = 1; i < i_level; i++ )
784 if( p_chk->common.i_chunk_fourcc == AVIFOURCC_RIFF||
785 p_chk->common.i_chunk_fourcc == AVIFOURCC_LIST )
787 sprintf( str + i_level * 5,
788 "%c %4.4s-%4.4s size:"I64Fu" pos:"I64Fu,
790 (char*)&p_chk->common.i_chunk_fourcc,
791 (char*)&p_chk->list.i_type,
792 p_chk->common.i_chunk_size,
793 p_chk->common.i_chunk_pos );
797 sprintf( str + i_level * 5,
798 "+ %4.4s size:"I64Fu" pos:"I64Fu,
799 (char*)&p_chk->common.i_chunk_fourcc,
800 p_chk->common.i_chunk_size,
801 p_chk->common.i_chunk_pos );
803 msg_Dbg( p_obj, "%s", str );
805 p_child = p_chk->common.p_first;
808 AVI_ChunkDumpDebug_level( p_obj, p_child, i_level + 1 );
809 p_child = p_child->common.p_next;
813 int AVI_ChunkReadRoot( stream_t *s, avi_chunk_t *p_root )
815 avi_chunk_list_t *p_list = (avi_chunk_list_t*)p_root;
817 vlc_bool_t b_seekable;
819 stream_Control( s, STREAM_CAN_FASTSEEK, &b_seekable );
821 p_list->i_chunk_pos = 0;
822 p_list->i_chunk_size = stream_Size( s );
823 p_list->i_chunk_fourcc = AVIFOURCC_LIST;
824 p_list->p_father = NULL;
825 p_list->p_next = NULL;
826 p_list->p_first = NULL;
827 p_list->p_last = NULL;
829 p_list->i_type = VLC_FOURCC( 'r', 'o', 'o', 't' );
833 p_chk = malloc( sizeof( avi_chunk_t ) );
834 memset( p_chk, 0, sizeof( avi_chunk_t ) );
835 if( !p_root->common.p_first )
837 p_root->common.p_first = p_chk;
841 p_root->common.p_last->common.p_next = p_chk;
843 p_root->common.p_last = p_chk;
845 if( AVI_ChunkRead( s, p_chk, p_root ) ||
846 ( stream_Tell( s ) >=
847 (off_t)p_chk->common.p_father->common.i_chunk_pos +
848 (off_t)__EVEN( p_chk->common.p_father->common.i_chunk_size ) ) )
852 /* If we can't seek then stop when we 've found first RIFF-AVI */
853 if( p_chk->common.i_chunk_fourcc == AVIFOURCC_RIFF &&
854 p_chk->list.i_type == AVIFOURCC_AVI && !b_seekable )
860 AVI_ChunkDumpDebug_level( (vlc_object_t*)s, p_root, 0 );
864 void AVI_ChunkFreeRoot( stream_t *s,
867 AVI_ChunkFree( s, p_chk );
871 int _AVI_ChunkCount( avi_chunk_t *p_chk, vlc_fourcc_t i_fourcc )
874 avi_chunk_t *p_child;
882 p_child = p_chk->common.p_first;
885 if( p_child->common.i_chunk_fourcc == i_fourcc ||
886 ( p_child->common.i_chunk_fourcc == AVIFOURCC_LIST &&
887 p_child->list.i_type == i_fourcc ) )
891 p_child = p_child->common.p_next;
896 void *_AVI_ChunkFind( avi_chunk_t *p_chk,
897 vlc_fourcc_t i_fourcc, int i_number )
899 avi_chunk_t *p_child;
904 p_child = p_chk->common.p_first;
908 if( p_child->common.i_chunk_fourcc == i_fourcc ||
909 ( p_child->common.i_chunk_fourcc == AVIFOURCC_LIST &&
910 p_child->list.i_type == i_fourcc ) )
920 p_child = p_child->common.p_next;