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> /* VLC_BITMAPINFOHEADER */
38 #define __EVEN( x ) (((x) + 1) & ~1)
40 static vlc_fourcc_t GetFOURCC( const uint8_t *p_buff )
42 return VLC_FOURCC( p_buff[0], p_buff[1], p_buff[2], p_buff[3] );
45 /****************************************************************************
47 * Basics functions to manipulates chunks
49 ****************************************************************************/
50 static int AVI_ChunkReadCommon( stream_t *s, avi_chunk_t *p_chk )
52 const uint8_t *p_peek;
54 memset( p_chk, 0, sizeof( avi_chunk_t ) );
56 if( 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:%"PRId64" pos:%"PRId64,
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;
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 = xmalloc( 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 if( i_read > 100000000 ) \
207 msg_Err( s, "Big chunk ignored" ); \
208 return VLC_EGENERIC; \
210 uint8_t *p_read, *p_buff; \
211 if( !( p_read = p_buff = malloc(i_read ) ) ) \
213 return VLC_EGENERIC; \
215 i_read = stream_Read( s, p_read, i_read ); \
216 if( i_read < (int64_t)__EVEN(p_chk->common.i_chunk_size ) + 8 ) \
219 return VLC_EGENERIC; \
224 #define AVI_READ( res, func, size ) \
225 if( i_read < size ) { \
227 return VLC_EGENERIC; \
230 res = func( p_read ); \
233 #define AVI_READCHUNK_EXIT( code ) \
237 static inline uint8_t GetB( uint8_t *ptr )
242 #define AVI_READ1BYTE( i_byte ) \
243 AVI_READ( i_byte, GetB, 1 )
245 #define AVI_READ2BYTES( i_word ) \
246 AVI_READ( i_word, GetWLE, 2 )
248 #define AVI_READ4BYTES( i_dword ) \
249 AVI_READ( i_dword, GetDWLE, 4 )
251 #define AVI_READ8BYTES( i_qword ) \
252 AVI_READ( i_qword, GetQWLE, 8 )
254 #define AVI_READFOURCC( i_dword ) \
255 AVI_READ( i_dword, GetFOURCC, 4 )
257 static int AVI_ChunkRead_avih( stream_t *s, avi_chunk_t *p_chk )
261 p_chk->common.i_chunk_fourcc = AVIFOURCC_avih;
262 AVI_READ4BYTES( p_chk->avih.i_microsecperframe);
263 AVI_READ4BYTES( p_chk->avih.i_maxbytespersec );
264 AVI_READ4BYTES( p_chk->avih.i_reserved1 );
265 AVI_READ4BYTES( p_chk->avih.i_flags );
266 AVI_READ4BYTES( p_chk->avih.i_totalframes );
267 AVI_READ4BYTES( p_chk->avih.i_initialframes );
268 AVI_READ4BYTES( p_chk->avih.i_streams );
269 AVI_READ4BYTES( p_chk->avih.i_suggestedbuffersize );
270 AVI_READ4BYTES( p_chk->avih.i_width );
271 AVI_READ4BYTES( p_chk->avih.i_height );
272 AVI_READ4BYTES( p_chk->avih.i_scale );
273 AVI_READ4BYTES( p_chk->avih.i_rate );
274 AVI_READ4BYTES( p_chk->avih.i_start );
275 AVI_READ4BYTES( p_chk->avih.i_length );
277 msg_Dbg( (vlc_object_t*)s,
278 "avih: streams:%d flags:%s%s%s%s %dx%d",
279 p_chk->avih.i_streams,
280 p_chk->avih.i_flags&AVIF_HASINDEX?" HAS_INDEX":"",
281 p_chk->avih.i_flags&AVIF_MUSTUSEINDEX?" MUST_USE_INDEX":"",
282 p_chk->avih.i_flags&AVIF_ISINTERLEAVED?" IS_INTERLEAVED":"",
283 p_chk->avih.i_flags&AVIF_TRUSTCKTYPE?" TRUST_CKTYPE":"",
284 p_chk->avih.i_width, p_chk->avih.i_height );
286 AVI_READCHUNK_EXIT( VLC_SUCCESS );
289 static int AVI_ChunkRead_strh( stream_t *s, avi_chunk_t *p_chk )
293 AVI_READFOURCC( p_chk->strh.i_type );
294 AVI_READFOURCC( p_chk->strh.i_handler );
295 AVI_READ4BYTES( p_chk->strh.i_flags );
296 AVI_READ4BYTES( p_chk->strh.i_reserved1 );
297 AVI_READ4BYTES( p_chk->strh.i_initialframes );
298 AVI_READ4BYTES( p_chk->strh.i_scale );
299 AVI_READ4BYTES( p_chk->strh.i_rate );
300 AVI_READ4BYTES( p_chk->strh.i_start );
301 AVI_READ4BYTES( p_chk->strh.i_length );
302 AVI_READ4BYTES( p_chk->strh.i_suggestedbuffersize );
303 AVI_READ4BYTES( p_chk->strh.i_quality );
304 AVI_READ4BYTES( p_chk->strh.i_samplesize );
306 msg_Dbg( (vlc_object_t*)s,
307 "strh: type:%4.4s handler:0x%8.8x samplesize:%d %.2ffps",
308 (char*)&p_chk->strh.i_type,
309 p_chk->strh.i_handler,
310 p_chk->strh.i_samplesize,
311 ( p_chk->strh.i_scale ?
312 (float)p_chk->strh.i_rate / (float)p_chk->strh.i_scale : -1) );
315 AVI_READCHUNK_EXIT( VLC_SUCCESS );
318 static int AVI_ChunkRead_strf( stream_t *s, avi_chunk_t *p_chk )
323 if( p_chk->common.p_father == NULL )
325 msg_Err( (vlc_object_t*)s, "malformed avi file" );
326 AVI_READCHUNK_EXIT( VLC_EGENERIC );
328 if( !( p_strh = AVI_ChunkFind( p_chk->common.p_father, AVIFOURCC_strh, 0 ) ) )
330 msg_Err( (vlc_object_t*)s, "malformed avi file" );
331 AVI_READCHUNK_EXIT( VLC_EGENERIC );
334 switch( p_strh->strh.i_type )
336 case( AVIFOURCC_auds ):
337 p_chk->strf.auds.i_cat = AUDIO_ES;
338 p_chk->strf.auds.p_wf = xmalloc( __MAX( p_chk->common.i_chunk_size, sizeof( WAVEFORMATEX ) ) );
339 AVI_READ2BYTES( p_chk->strf.auds.p_wf->wFormatTag );
340 AVI_READ2BYTES( p_chk->strf.auds.p_wf->nChannels );
341 AVI_READ4BYTES( p_chk->strf.auds.p_wf->nSamplesPerSec );
342 AVI_READ4BYTES( p_chk->strf.auds.p_wf->nAvgBytesPerSec );
343 AVI_READ2BYTES( p_chk->strf.auds.p_wf->nBlockAlign );
344 AVI_READ2BYTES( p_chk->strf.auds.p_wf->wBitsPerSample );
346 if( p_chk->strf.auds.p_wf->wFormatTag != WAVE_FORMAT_PCM
347 && p_chk->common.i_chunk_size > sizeof( WAVEFORMATEX ) )
349 AVI_READ2BYTES( p_chk->strf.auds.p_wf->cbSize );
351 /* prevent segfault */
352 if( p_chk->strf.auds.p_wf->cbSize >
353 p_chk->common.i_chunk_size - sizeof( WAVEFORMATEX ) )
355 p_chk->strf.auds.p_wf->cbSize =
356 p_chk->common.i_chunk_size - sizeof( WAVEFORMATEX );
359 if( p_chk->strf.auds.p_wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE )
361 msg_Dbg( s, "Extended header found" );
366 p_chk->strf.auds.p_wf->cbSize = 0;
368 if( p_chk->strf.auds.p_wf->cbSize > 0 )
370 memcpy( &p_chk->strf.auds.p_wf[1] ,
371 p_buff + 8 + sizeof( WAVEFORMATEX ), /* 8=fourcc+size */
372 p_chk->strf.auds.p_wf->cbSize );
375 msg_Dbg( (vlc_object_t*)s,
376 "strf: audio:0x%4.4x channels:%d %dHz %dbits/sample %dkb/s",
377 p_chk->strf.auds.p_wf->wFormatTag,
378 p_chk->strf.auds.p_wf->nChannels,
379 p_chk->strf.auds.p_wf->nSamplesPerSec,
380 p_chk->strf.auds.p_wf->wBitsPerSample,
381 p_chk->strf.auds.p_wf->nAvgBytesPerSec * 8 / 1024 );
384 case( AVIFOURCC_vids ):
385 p_strh->strh.i_samplesize = 0; /* XXX for ffmpeg avi file */
386 p_chk->strf.vids.i_cat = VIDEO_ES;
387 p_chk->strf.vids.p_bih = xmalloc( __MAX( p_chk->common.i_chunk_size,
388 sizeof( *p_chk->strf.vids.p_bih ) ) );
389 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biSize );
390 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biWidth );
391 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biHeight );
392 AVI_READ2BYTES( p_chk->strf.vids.p_bih->biPlanes );
393 AVI_READ2BYTES( p_chk->strf.vids.p_bih->biBitCount );
394 AVI_READFOURCC( p_chk->strf.vids.p_bih->biCompression );
395 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biSizeImage );
396 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biXPelsPerMeter );
397 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biYPelsPerMeter );
398 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biClrUsed );
399 AVI_READ4BYTES( p_chk->strf.vids.p_bih->biClrImportant );
400 if( p_chk->strf.vids.p_bih->biSize > p_chk->common.i_chunk_size )
402 p_chk->strf.vids.p_bih->biSize = p_chk->common.i_chunk_size;
404 if( p_chk->common.i_chunk_size > sizeof(VLC_BITMAPINFOHEADER) )
406 memcpy( &p_chk->strf.vids.p_bih[1],
407 p_buff + 8 + sizeof(VLC_BITMAPINFOHEADER), /* 8=fourrc+size */
408 p_chk->common.i_chunk_size -sizeof(VLC_BITMAPINFOHEADER) );
411 msg_Dbg( (vlc_object_t*)s,
412 "strf: video:%4.4s %"PRIu32"x%"PRIu32" planes:%d %dbpp",
413 (char*)&p_chk->strf.vids.p_bih->biCompression,
414 (uint32_t)p_chk->strf.vids.p_bih->biWidth,
415 (uint32_t)p_chk->strf.vids.p_bih->biHeight,
416 p_chk->strf.vids.p_bih->biPlanes,
417 p_chk->strf.vids.p_bih->biBitCount );
421 msg_Warn( (vlc_object_t*)s, "unknown stream type" );
422 p_chk->strf.common.i_cat = UNKNOWN_ES;
425 AVI_READCHUNK_EXIT( VLC_SUCCESS );
427 static void AVI_ChunkFree_strf( avi_chunk_t *p_chk )
429 avi_chunk_strf_t *p_strf = (avi_chunk_strf_t*)p_chk;
430 if( p_strf->common.i_cat == AUDIO_ES )
432 FREENULL( p_strf->auds.p_wf );
434 else if( p_strf->common.i_cat == VIDEO_ES )
436 FREENULL( p_strf->vids.p_bih );
440 static int AVI_ChunkRead_strd( stream_t *s, avi_chunk_t *p_chk )
443 p_chk->strd.p_data = xmalloc( p_chk->common.i_chunk_size );
444 memcpy( p_chk->strd.p_data, p_buff + 8, p_chk->common.i_chunk_size );
445 AVI_READCHUNK_EXIT( VLC_SUCCESS );
448 static void AVI_ChunkFree_strd( avi_chunk_t *p_chk )
450 free( p_chk->strd.p_data );
453 static int AVI_ChunkRead_idx1( stream_t *s, avi_chunk_t *p_chk )
455 unsigned int i_count, i_index;
459 i_count = __MIN( (int64_t)p_chk->common.i_chunk_size, i_read ) / 16;
461 p_chk->idx1.i_entry_count = i_count;
462 p_chk->idx1.i_entry_max = i_count;
465 p_chk->idx1.entry = xcalloc( i_count, sizeof( idx1_entry_t ) );
467 for( i_index = 0; i_index < i_count ; i_index++ )
469 AVI_READFOURCC( p_chk->idx1.entry[i_index].i_fourcc );
470 AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_flags );
471 AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_pos );
472 AVI_READ4BYTES( p_chk->idx1.entry[i_index].i_length );
477 p_chk->idx1.entry = NULL;
480 msg_Dbg( (vlc_object_t*)s, "idx1: index entry:%d", i_count );
482 AVI_READCHUNK_EXIT( VLC_SUCCESS );
485 static void AVI_ChunkFree_idx1( avi_chunk_t *p_chk )
487 p_chk->idx1.i_entry_count = 0;
488 p_chk->idx1.i_entry_max = 0;
489 FREENULL( p_chk->idx1.entry );
494 static int AVI_ChunkRead_indx( stream_t *s, avi_chunk_t *p_chk )
496 unsigned int i_count, i;
498 avi_chunk_indx_t *p_indx = (avi_chunk_indx_t*)p_chk;
502 AVI_READ2BYTES( p_indx->i_longsperentry );
503 AVI_READ1BYTE ( p_indx->i_indexsubtype );
504 AVI_READ1BYTE ( p_indx->i_indextype );
505 AVI_READ4BYTES( p_indx->i_entriesinuse );
507 AVI_READ4BYTES( p_indx->i_id );
508 p_indx->idx.std = NULL;
509 p_indx->idx.field = NULL;
510 p_indx->idx.super = NULL;
512 if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS && p_indx->i_indexsubtype == 0 )
514 AVI_READ8BYTES( p_indx->i_baseoffset );
515 AVI_READ4BYTES( i_dummy );
517 i_count = __MIN( p_indx->i_entriesinuse, i_read / 8 );
518 p_indx->i_entriesinuse = i_count;
519 p_indx->idx.std = xcalloc( i_count, sizeof( indx_std_entry_t ) );
521 for( i = 0; i < i_count; i++ )
523 AVI_READ4BYTES( p_indx->idx.std[i].i_offset );
524 AVI_READ4BYTES( p_indx->idx.std[i].i_size );
527 else if( p_indx->i_indextype == AVI_INDEX_OF_CHUNKS && p_indx->i_indexsubtype == AVI_INDEX_2FIELD )
529 AVI_READ8BYTES( p_indx->i_baseoffset );
530 AVI_READ4BYTES( i_dummy );
532 i_count = __MIN( p_indx->i_entriesinuse, i_read / 12 );
533 p_indx->i_entriesinuse = i_count;
534 p_indx->idx.field = xcalloc( i_count, sizeof( indx_field_entry_t ) );
535 for( i = 0; i < i_count; i++ )
537 AVI_READ4BYTES( p_indx->idx.field[i].i_offset );
538 AVI_READ4BYTES( p_indx->idx.field[i].i_size );
539 AVI_READ4BYTES( p_indx->idx.field[i].i_offsetfield2 );
542 else if( p_indx->i_indextype == AVI_INDEX_OF_INDEXES )
544 p_indx->i_baseoffset = 0;
545 AVI_READ4BYTES( i_dummy );
546 AVI_READ4BYTES( i_dummy );
547 AVI_READ4BYTES( i_dummy );
549 i_count = __MIN( p_indx->i_entriesinuse, i_read / 16 );
550 p_indx->i_entriesinuse = i_count;
551 p_indx->idx.super = xcalloc( i_count, sizeof( indx_super_entry_t ) );
553 for( i = 0; i < i_count; i++ )
555 AVI_READ8BYTES( p_indx->idx.super[i].i_offset );
556 AVI_READ4BYTES( p_indx->idx.super[i].i_size );
557 AVI_READ4BYTES( p_indx->idx.super[i].i_duration );
562 msg_Warn( (vlc_object_t*)s, "unknow type/subtype index" );
566 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 );
568 AVI_READCHUNK_EXIT( VLC_SUCCESS );
570 static void AVI_ChunkFree_indx( avi_chunk_t *p_chk )
572 avi_chunk_indx_t *p_indx = (avi_chunk_indx_t*)p_chk;
574 FREENULL( p_indx->idx.std );
575 FREENULL( p_indx->idx.field );
576 FREENULL( p_indx->idx.super );
579 static int AVI_ChunkRead_vprp( stream_t *s, avi_chunk_t *p_chk )
581 avi_chunk_vprp_t *p_vprp = (avi_chunk_vprp_t*)p_chk;
585 AVI_READ4BYTES( p_vprp->i_video_format_token );
586 AVI_READ4BYTES( p_vprp->i_video_standard );
587 AVI_READ4BYTES( p_vprp->i_vertical_refresh );
588 AVI_READ4BYTES( p_vprp->i_h_total_in_t );
589 AVI_READ4BYTES( p_vprp->i_v_total_in_lines );
590 AVI_READ4BYTES( p_vprp->i_frame_aspect_ratio );
591 AVI_READ4BYTES( p_vprp->i_frame_width_in_pixels );
592 AVI_READ4BYTES( p_vprp->i_frame_height_in_pixels );
593 AVI_READ4BYTES( p_vprp->i_nb_fields_per_frame );
594 for( unsigned i = 0; i < __MIN( p_vprp->i_nb_fields_per_frame, 2 ); i++ )
596 AVI_READ4BYTES( p_vprp->field_info[i].i_compressed_bm_height );
597 AVI_READ4BYTES( p_vprp->field_info[i].i_compressed_bm_width );
598 AVI_READ4BYTES( p_vprp->field_info[i].i_valid_bm_height );
599 AVI_READ4BYTES( p_vprp->field_info[i].i_valid_bm_width );
600 AVI_READ4BYTES( p_vprp->field_info[i].i_valid_bm_x_offset );
601 AVI_READ4BYTES( p_vprp->field_info[i].i_valid_bm_y_offset );
602 AVI_READ4BYTES( p_vprp->field_info[i].i_video_x_offset_in_t );
603 AVI_READ4BYTES( p_vprp->field_info[i].i_video_y_valid_start_line );
607 msg_Dbg( (vlc_object_t*)s, "vprp: format:%d standard:%d",
608 p_vprp->i_video_format_token, p_vprp->i_video_standard );
610 AVI_READCHUNK_EXIT( VLC_SUCCESS );
615 vlc_fourcc_t i_fourcc;
616 const char *psz_type;
619 { AVIFOURCC_IARL, "archive location" },
620 { AVIFOURCC_IART, "artist" },
621 { AVIFOURCC_ICMS, "commisioned" },
622 { AVIFOURCC_ICMT, "comments" },
623 { AVIFOURCC_ICOP, "copyright" },
624 { AVIFOURCC_ICRD, "creation date" },
625 { AVIFOURCC_ICRP, "cropped" },
626 { AVIFOURCC_IDIM, "dimensions" },
627 { AVIFOURCC_IDPI, "dots per inch" },
628 { AVIFOURCC_IENG, "engineer" },
629 { AVIFOURCC_IGNR, "genre" },
630 { AVIFOURCC_IKEY, "keywords" },
631 { AVIFOURCC_ILGT, "lightness" },
632 { AVIFOURCC_IMED, "medium" },
633 { AVIFOURCC_INAM, "name" },
634 { AVIFOURCC_IPLT, "palette setting" },
635 { AVIFOURCC_IPRD, "product" },
636 { AVIFOURCC_ISBJ, "subject" },
637 { AVIFOURCC_ISFT, "software" },
638 { AVIFOURCC_ISHP, "sharpness" },
639 { AVIFOURCC_ISRC, "source" },
640 { AVIFOURCC_ISRF, "source form" },
641 { AVIFOURCC_ITCH, "technician" },
642 { AVIFOURCC_ISMP, "time code" },
643 { AVIFOURCC_IDIT, "digitalization time" },
644 { AVIFOURCC_strn, "stream name" },
647 static int AVI_ChunkRead_strz( stream_t *s, avi_chunk_t *p_chk )
650 avi_chunk_STRING_t *p_strz = (avi_chunk_STRING_t*)p_chk;
653 for( i_index = 0;; i_index++)
655 if( !AVI_strz_type[i_index].i_fourcc ||
656 AVI_strz_type[i_index].i_fourcc == p_strz->i_chunk_fourcc )
661 p_strz->p_type = strdup( AVI_strz_type[i_index].psz_type );
662 p_strz->p_str = xmalloc( p_strz->i_chunk_size + 1);
664 if( p_strz->i_chunk_size )
666 memcpy( p_strz->p_str, p_read, p_strz->i_chunk_size );
668 p_strz->p_str[p_strz->i_chunk_size] = 0;
671 msg_Dbg( (vlc_object_t*)s, "%4.4s: %s : %s",
672 (char*)&p_strz->i_chunk_fourcc, p_strz->p_type, p_strz->p_str);
674 AVI_READCHUNK_EXIT( VLC_SUCCESS );
676 static void AVI_ChunkFree_strz( avi_chunk_t *p_chk )
678 avi_chunk_STRING_t *p_strz = (avi_chunk_STRING_t*)p_chk;
679 FREENULL( p_strz->p_type );
680 FREENULL( p_strz->p_str );
683 static int AVI_ChunkRead_nothing( stream_t *s, avi_chunk_t *p_chk )
685 return AVI_NextChunk( s, p_chk );
687 static void AVI_ChunkFree_nothing( avi_chunk_t *p_chk )
694 vlc_fourcc_t i_fourcc;
695 int (*AVI_ChunkRead_function)( stream_t *s, avi_chunk_t *p_chk );
696 void (*AVI_ChunkFree_function)( avi_chunk_t *p_chk );
697 } AVI_Chunk_Function [] =
699 { AVIFOURCC_RIFF, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
700 { AVIFOURCC_ON2, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
701 { AVIFOURCC_LIST, AVI_ChunkRead_list, AVI_ChunkFree_nothing },
702 { AVIFOURCC_avih, AVI_ChunkRead_avih, AVI_ChunkFree_nothing },
703 { AVIFOURCC_ON2h, AVI_ChunkRead_avih, AVI_ChunkFree_nothing },
704 { AVIFOURCC_strh, AVI_ChunkRead_strh, AVI_ChunkFree_nothing },
705 { AVIFOURCC_strf, AVI_ChunkRead_strf, AVI_ChunkFree_strf },
706 { AVIFOURCC_strd, AVI_ChunkRead_strd, AVI_ChunkFree_strd },
707 { AVIFOURCC_idx1, AVI_ChunkRead_idx1, AVI_ChunkFree_idx1 },
708 { AVIFOURCC_indx, AVI_ChunkRead_indx, AVI_ChunkFree_indx },
709 { AVIFOURCC_vprp, AVI_ChunkRead_vprp, AVI_ChunkFree_nothing },
710 { AVIFOURCC_JUNK, AVI_ChunkRead_nothing, AVI_ChunkFree_nothing },
712 { AVIFOURCC_IARL, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
713 { AVIFOURCC_IARL, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
714 { AVIFOURCC_IART, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
715 { AVIFOURCC_ICMS, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
716 { AVIFOURCC_ICMT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
717 { AVIFOURCC_ICOP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
718 { AVIFOURCC_ICRD, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
719 { AVIFOURCC_ICRP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
720 { AVIFOURCC_IDIM, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
721 { AVIFOURCC_IDPI, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
722 { AVIFOURCC_IENG, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
723 { AVIFOURCC_IGNR, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
724 { AVIFOURCC_IKEY, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
725 { AVIFOURCC_ILGT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
726 { AVIFOURCC_IMED, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
727 { AVIFOURCC_INAM, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
728 { AVIFOURCC_IPLT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
729 { AVIFOURCC_IPRD, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
730 { AVIFOURCC_ISBJ, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
731 { AVIFOURCC_ISFT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
732 { AVIFOURCC_ISHP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
733 { AVIFOURCC_ISRC, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
734 { AVIFOURCC_ISRF, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
735 { AVIFOURCC_ITCH, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
736 { AVIFOURCC_ISMP, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
737 { AVIFOURCC_IDIT, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
738 { AVIFOURCC_strn, AVI_ChunkRead_strz, AVI_ChunkFree_strz },
742 static int AVI_ChunkFunctionFind( vlc_fourcc_t i_fourcc )
744 unsigned int i_index;
745 for( i_index = 0; ; i_index++ )
747 if( ( AVI_Chunk_Function[i_index].i_fourcc == i_fourcc )||
748 ( AVI_Chunk_Function[i_index].i_fourcc == 0 ) )
755 int _AVI_ChunkRead( stream_t *s, avi_chunk_t *p_chk, avi_chunk_t *p_father )
764 if( AVI_ChunkReadCommon( s, p_chk ) )
766 msg_Warn( (vlc_object_t*)s, "cannot read one chunk" );
769 if( p_chk->common.i_chunk_fourcc == VLC_FOURCC( 0, 0, 0, 0 ) )
771 msg_Warn( (vlc_object_t*)s, "found null fourcc chunk (corrupted file?)" );
774 p_chk->common.p_father = p_father;
776 i_index = AVI_ChunkFunctionFind( p_chk->common.i_chunk_fourcc );
777 if( AVI_Chunk_Function[i_index].AVI_ChunkRead_function )
779 return AVI_Chunk_Function[i_index].AVI_ChunkRead_function( s, p_chk );
781 else if( ( ((char*)&p_chk->common.i_chunk_fourcc)[0] == 'i' &&
782 ((char*)&p_chk->common.i_chunk_fourcc)[1] == 'x' ) ||
783 ( ((char*)&p_chk->common.i_chunk_fourcc)[2] == 'i' &&
784 ((char*)&p_chk->common.i_chunk_fourcc)[3] == 'x' ) )
786 p_chk->common.i_chunk_fourcc = AVIFOURCC_indx;
787 return AVI_ChunkRead_indx( s, p_chk );
789 msg_Warn( (vlc_object_t*)s, "unknown chunk (not loaded)" );
790 return AVI_NextChunk( s, p_chk );
793 void _AVI_ChunkFree( stream_t *s,
797 avi_chunk_t *p_child, *p_next;
804 /* Free all child chunk */
805 p_child = p_chk->common.p_first;
808 p_next = p_child->common.p_next;
809 AVI_ChunkFree( s, p_child );
814 i_index = AVI_ChunkFunctionFind( p_chk->common.i_chunk_fourcc );
815 if( AVI_Chunk_Function[i_index].AVI_ChunkFree_function )
818 msg_Dbg( (vlc_object_t*)s, "free chunk %4.4s",
819 (char*)&p_chk->common.i_chunk_fourcc );
821 AVI_Chunk_Function[i_index].AVI_ChunkFree_function( p_chk);
825 msg_Warn( (vlc_object_t*)s, "unknown chunk (not unloaded)" );
827 p_chk->common.p_first = NULL;
828 p_chk->common.p_last = NULL;
833 static void AVI_ChunkDumpDebug_level( vlc_object_t *p_obj,
834 avi_chunk_t *p_chk, unsigned i_level )
837 avi_chunk_t *p_child;
840 if( i_level >= (sizeof(str) - 1)/5 )
843 memset( str, ' ', sizeof( str ) );
844 for( i = 1; i < i_level; i++ )
848 if( p_chk->common.i_chunk_fourcc == AVIFOURCC_RIFF ||
849 p_chk->common.i_chunk_fourcc == AVIFOURCC_ON2 ||
850 p_chk->common.i_chunk_fourcc == AVIFOURCC_LIST )
852 snprintf( &str[i_level * 5], sizeof(str) - 5*i_level,
853 "%c %4.4s-%4.4s size:%"PRIu64" pos:%"PRIu64,
855 (char*)&p_chk->common.i_chunk_fourcc,
856 (char*)&p_chk->list.i_type,
857 p_chk->common.i_chunk_size,
858 p_chk->common.i_chunk_pos );
862 snprintf( &str[i_level * 5], sizeof(str) - 5*i_level,
863 "+ %4.4s size:%"PRIu64" pos:%"PRIu64,
864 (char*)&p_chk->common.i_chunk_fourcc,
865 p_chk->common.i_chunk_size,
866 p_chk->common.i_chunk_pos );
868 msg_Dbg( p_obj, "%s", str );
870 p_child = p_chk->common.p_first;
873 AVI_ChunkDumpDebug_level( p_obj, p_child, i_level + 1 );
874 p_child = p_child->common.p_next;
878 int AVI_ChunkReadRoot( stream_t *s, avi_chunk_t *p_root )
880 avi_chunk_list_t *p_list = (avi_chunk_list_t*)p_root;
884 stream_Control( s, STREAM_CAN_FASTSEEK, &b_seekable );
886 p_list->i_chunk_pos = 0;
887 p_list->i_chunk_size = stream_Size( s );
888 p_list->i_chunk_fourcc = AVIFOURCC_LIST;
889 p_list->p_father = NULL;
890 p_list->p_next = NULL;
891 p_list->p_first = NULL;
892 p_list->p_last = NULL;
894 p_list->i_type = VLC_FOURCC( 'r', 'o', 'o', 't' );
898 p_chk = xmalloc( sizeof( avi_chunk_t ) );
899 memset( p_chk, 0, sizeof( avi_chunk_t ) );
900 if( !p_root->common.p_first )
902 p_root->common.p_first = p_chk;
906 p_root->common.p_last->common.p_next = p_chk;
908 p_root->common.p_last = p_chk;
910 if( AVI_ChunkRead( s, p_chk, p_root ) ||
911 ( stream_Tell( s ) >=
912 (off_t)p_chk->common.p_father->common.i_chunk_pos +
913 (off_t)__EVEN( p_chk->common.p_father->common.i_chunk_size ) ) )
917 /* If we can't seek then stop when we 've found first RIFF-AVI */
918 if( p_chk->common.i_chunk_fourcc == AVIFOURCC_RIFF &&
919 p_chk->list.i_type == AVIFOURCC_AVI && !b_seekable )
925 AVI_ChunkDumpDebug_level( (vlc_object_t*)s, p_root, 0 );
929 void AVI_ChunkFreeRoot( stream_t *s,
932 AVI_ChunkFree( s, p_chk );
936 int _AVI_ChunkCount( avi_chunk_t *p_chk, vlc_fourcc_t i_fourcc )
939 avi_chunk_t *p_child;
947 p_child = p_chk->common.p_first;
950 if( p_child->common.i_chunk_fourcc == i_fourcc ||
951 ( p_child->common.i_chunk_fourcc == AVIFOURCC_LIST &&
952 p_child->list.i_type == i_fourcc ) )
956 p_child = p_child->common.p_next;
961 void *_AVI_ChunkFind( avi_chunk_t *p_chk,
962 vlc_fourcc_t i_fourcc, int i_number )
964 avi_chunk_t *p_child;
969 p_child = p_chk->common.p_first;
973 if( p_child->common.i_chunk_fourcc == i_fourcc ||
974 ( p_child->common.i_chunk_fourcc == AVIFOURCC_LIST &&
975 p_child->list.i_type == i_fourcc ) )
985 p_child = p_child->common.p_next;