1 /*****************************************************************************
2 * image.c : wrapper for image reading/writing facilities
3 *****************************************************************************
4 * Copyright (C) 2004-2007 the VideoLAN team
7 * Author: Gildas Bazin <gbazin@videolan.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
26 * This file contains the functions to handle the image_handler_t type
29 /*****************************************************************************
31 *****************************************************************************/
35 #include <vlc_codec.h>
36 #include <vlc_filter.h>
38 #include <vlc_image.h>
39 #include <vlc_stream.h>
40 #include <vlc_charset.h>
42 static picture_t *ImageRead( image_handler_t *, block_t *,
43 video_format_t *, video_format_t * );
44 static picture_t *ImageReadUrl( image_handler_t *, const char *,
45 video_format_t *, video_format_t * );
46 static block_t *ImageWrite( image_handler_t *, picture_t *,
47 video_format_t *, video_format_t * );
48 static int ImageWriteUrl( image_handler_t *, picture_t *,
49 video_format_t *, video_format_t *, const char * );
51 static picture_t *ImageConvert( image_handler_t *, picture_t *,
52 video_format_t *, video_format_t * );
53 static picture_t *ImageFilter( image_handler_t *, picture_t *,
54 video_format_t *, const char *psz_module );
56 static decoder_t *CreateDecoder( vlc_object_t *, video_format_t * );
57 static void DeleteDecoder( decoder_t * );
58 static encoder_t *CreateEncoder( vlc_object_t *, video_format_t *,
60 static void DeleteEncoder( encoder_t * );
61 static filter_t *CreateFilter( vlc_object_t *, es_format_t *,
62 video_format_t *, const char * );
63 static void DeleteFilter( filter_t * );
65 static vlc_fourcc_t Ext2Fourcc( const char * );
66 /*static const char *Fourcc2Ext( vlc_fourcc_t );*/
69 * Create an image_handler_t instance
72 image_handler_t *__image_HandlerCreate( vlc_object_t *p_this )
74 image_handler_t *p_image = malloc( sizeof(image_handler_t) );
76 memset( p_image, 0, sizeof(image_handler_t) );
77 p_image->p_parent = p_this;
79 p_image->pf_read = ImageRead;
80 p_image->pf_read_url = ImageReadUrl;
81 p_image->pf_write = ImageWrite;
82 p_image->pf_write_url = ImageWriteUrl;
83 p_image->pf_convert = ImageConvert;
84 p_image->pf_filter = ImageFilter;
90 * Delete the image_handler_t instance
93 void image_HandlerDelete( image_handler_t *p_image )
95 if( !p_image ) return;
97 if( p_image->p_dec ) DeleteDecoder( p_image->p_dec );
98 if( p_image->p_enc ) DeleteEncoder( p_image->p_enc );
99 if( p_image->p_filter ) DeleteFilter( p_image->p_filter );
110 static picture_t *ImageRead( image_handler_t *p_image, block_t *p_block,
111 video_format_t *p_fmt_in,
112 video_format_t *p_fmt_out )
114 picture_t *p_pic = NULL, *p_tmp;
116 /* Check if we can reuse the current decoder */
117 if( p_image->p_dec &&
118 p_image->p_dec->fmt_in.i_codec != p_fmt_in->i_chroma )
120 DeleteDecoder( p_image->p_dec );
124 /* Start a decoder */
125 if( !p_image->p_dec )
127 p_image->p_dec = CreateDecoder( p_image->p_parent, p_fmt_in );
128 if( !p_image->p_dec ) return NULL;
131 p_block->i_pts = p_block->i_dts = mdate();
132 while( (p_tmp = p_image->p_dec->pf_decode_video( p_image->p_dec, &p_block ))
136 p_pic->pf_release( p_pic );
142 msg_Warn( p_image->p_parent, "no image decoded" );
146 if( !p_fmt_out->i_chroma )
147 p_fmt_out->i_chroma = p_image->p_dec->fmt_out.video.i_chroma;
148 if( !p_fmt_out->i_width && p_fmt_out->i_height )
149 p_fmt_out->i_width = p_fmt_out->i_height
150 * p_image->p_dec->fmt_out.video.i_aspect
151 / VOUT_ASPECT_FACTOR;
152 if( !p_fmt_out->i_height && p_fmt_out->i_width )
153 p_fmt_out->i_height = p_fmt_out->i_width * VOUT_ASPECT_FACTOR
154 / p_image->p_dec->fmt_out.video.i_aspect;
155 if( !p_fmt_out->i_width )
156 p_fmt_out->i_width = p_image->p_dec->fmt_out.video.i_width;
157 if( !p_fmt_out->i_height )
158 p_fmt_out->i_height = p_image->p_dec->fmt_out.video.i_height;
160 /* Check if we need chroma conversion or resizing */
161 if( p_image->p_dec->fmt_out.video.i_chroma != p_fmt_out->i_chroma ||
162 p_image->p_dec->fmt_out.video.i_width != p_fmt_out->i_width ||
163 p_image->p_dec->fmt_out.video.i_height != p_fmt_out->i_height )
165 if( p_image->p_filter )
166 if( p_image->p_filter->fmt_in.video.i_chroma !=
167 p_image->p_dec->fmt_out.video.i_chroma ||
168 p_image->p_filter->fmt_out.video.i_chroma != p_fmt_out->i_chroma )
170 /* We need to restart a new filter */
171 DeleteFilter( p_image->p_filter );
172 p_image->p_filter = 0;
176 if( !p_image->p_filter )
179 CreateFilter( p_image->p_parent, &p_image->p_dec->fmt_out,
182 if( !p_image->p_filter )
184 p_pic->pf_release( p_pic );
190 /* Filters should handle on-the-fly size changes */
191 p_image->p_filter->fmt_in = p_image->p_dec->fmt_out;
192 p_image->p_filter->fmt_out = p_image->p_dec->fmt_out;
193 p_image->p_filter->fmt_out.i_codec = p_fmt_out->i_chroma;
194 p_image->p_filter->fmt_out.video = *p_fmt_out;
197 p_pic = p_image->p_filter->pf_video_filter( p_image->p_filter, p_pic );
198 *p_fmt_out = p_image->p_filter->fmt_out.video;
200 else *p_fmt_out = p_image->p_dec->fmt_out.video;
205 static picture_t *ImageReadUrl( image_handler_t *p_image, const char *psz_url,
206 video_format_t *p_fmt_in,
207 video_format_t *p_fmt_out )
211 stream_t *p_stream = NULL;
214 p_stream = stream_UrlNew( p_image->p_parent, psz_url );
218 msg_Dbg( p_image->p_parent, "could not open %s for reading",
223 i_size = stream_Size( p_stream );
225 p_block = block_New( p_image->p_parent, i_size );
227 stream_Read( p_stream, p_block->p_buffer, i_size );
228 stream_Delete( p_stream );
230 if( !p_fmt_in->i_chroma )
232 /* Try to guess format from file name */
233 p_fmt_in->i_chroma = Ext2Fourcc( psz_url );
236 p_pic = ImageRead( p_image, p_block, p_fmt_in, p_fmt_out );
246 static void PicRelease( picture_t *p_pic ) { (void)p_pic; }
248 static block_t *ImageWrite( image_handler_t *p_image, picture_t *p_pic,
249 video_format_t *p_fmt_in,
250 video_format_t *p_fmt_out )
253 void (*pf_release)( picture_t * );
255 /* Check if we can reuse the current encoder */
256 if( p_image->p_enc &&
257 ( p_image->p_enc->fmt_out.i_codec != p_fmt_out->i_chroma ||
258 p_image->p_enc->fmt_out.video.i_width != p_fmt_out->i_width ||
259 p_image->p_enc->fmt_out.video.i_height != p_fmt_out->i_height ) )
261 DeleteEncoder( p_image->p_enc );
265 /* Start an encoder */
266 if( !p_image->p_enc )
268 p_image->p_enc = CreateEncoder( p_image->p_parent,
269 p_fmt_in, p_fmt_out );
270 if( !p_image->p_enc ) return NULL;
273 /* Check if we need chroma conversion or resizing */
274 if( p_image->p_enc->fmt_in.video.i_chroma != p_fmt_in->i_chroma ||
275 p_image->p_enc->fmt_in.video.i_width != p_fmt_in->i_width ||
276 p_image->p_enc->fmt_in.video.i_height != p_fmt_in->i_height )
278 picture_t *p_tmp_pic;
280 if( p_image->p_filter )
281 if( p_image->p_filter->fmt_in.video.i_chroma != p_fmt_in->i_chroma ||
282 p_image->p_filter->fmt_out.video.i_chroma !=
283 p_image->p_enc->fmt_in.video.i_chroma )
285 /* We need to restart a new filter */
286 DeleteFilter( p_image->p_filter );
287 p_image->p_filter = 0;
291 if( !p_image->p_filter )
294 es_format_Init( &fmt_in, VIDEO_ES, p_fmt_in->i_chroma );
295 fmt_in.video = *p_fmt_in;
298 CreateFilter( p_image->p_parent, &fmt_in,
299 &p_image->p_enc->fmt_in.video, NULL );
301 if( !p_image->p_filter )
308 /* Filters should handle on-the-fly size changes */
309 p_image->p_filter->fmt_in.i_codec = p_fmt_in->i_chroma;
310 p_image->p_filter->fmt_out.video = *p_fmt_in;
311 p_image->p_filter->fmt_out.i_codec =p_image->p_enc->fmt_in.i_codec;
312 p_image->p_filter->fmt_out.video = p_image->p_enc->fmt_in.video;
315 pf_release = p_pic->pf_release;
316 p_pic->pf_release = PicRelease; /* Small hack */
318 p_image->p_filter->pf_video_filter( p_image->p_filter, p_pic );
319 p_pic->pf_release = pf_release;
321 p_block = p_image->p_enc->pf_encode_video( p_image->p_enc, p_tmp_pic );
323 p_image->p_filter->pf_vout_buffer_del( p_image->p_filter, p_tmp_pic );
327 p_block = p_image->p_enc->pf_encode_video( p_image->p_enc, p_pic );
332 msg_Dbg( p_image->p_parent, "no image encoded" );
339 static int ImageWriteUrl( image_handler_t *p_image, picture_t *p_pic,
340 video_format_t *p_fmt_in, video_format_t *p_fmt_out,
341 const char *psz_url )
346 if( !p_fmt_out->i_chroma )
348 /* Try to guess format from file name */
349 p_fmt_out->i_chroma = Ext2Fourcc( psz_url );
352 file = utf8_fopen( psz_url, "wb" );
355 msg_Err( p_image->p_parent, "%s: %s", psz_url, strerror( errno ) );
359 p_block = ImageWrite( p_image, p_pic, p_fmt_in, p_fmt_out );
364 if( fwrite( p_block->p_buffer, p_block->i_buffer, 1, file ) != 1 )
366 block_Release( p_block );
369 if( fclose( file ) && !err )
373 msg_Err( p_image->p_parent, "%s: %s", psz_url, strerror( err ) );
375 return err ? VLC_EGENERIC : VLC_SUCCESS;
379 * Convert an image to a different format
383 static picture_t *ImageConvert( image_handler_t *p_image, picture_t *p_pic,
384 video_format_t *p_fmt_in,
385 video_format_t *p_fmt_out )
387 void (*pf_release)( picture_t * );
390 if( !p_fmt_out->i_width && !p_fmt_out->i_height &&
391 p_fmt_out->i_sar_num && p_fmt_out->i_sar_den &&
392 p_fmt_out->i_sar_num * p_fmt_in->i_sar_den !=
393 p_fmt_out->i_sar_den * p_fmt_in->i_sar_num )
396 p_fmt_in->i_sar_num * (int64_t)p_fmt_out->i_sar_den *
397 p_fmt_in->i_width / p_fmt_in->i_sar_den / p_fmt_out->i_sar_num;
398 p_fmt_out->i_visible_width =
399 p_fmt_in->i_sar_num * (int64_t)p_fmt_out->i_sar_den *
400 p_fmt_in->i_visible_width / p_fmt_in->i_sar_den /
401 p_fmt_out->i_sar_num;
404 if( !p_fmt_out->i_chroma ) p_fmt_out->i_chroma = p_fmt_in->i_chroma;
405 if( !p_fmt_out->i_width )
406 p_fmt_out->i_width = p_fmt_out->i_visible_width = p_fmt_in->i_width;
407 if( !p_fmt_out->i_height )
408 p_fmt_out->i_height = p_fmt_out->i_visible_height = p_fmt_in->i_height;
409 if( !p_fmt_out->i_sar_num ) p_fmt_out->i_sar_num = p_fmt_in->i_sar_num;
410 if( !p_fmt_out->i_sar_den ) p_fmt_out->i_sar_den = p_fmt_in->i_sar_den;
411 if( !p_fmt_out->i_aspect ) p_fmt_out->i_aspect = p_fmt_in->i_aspect;
413 if( p_image->p_filter )
414 if( p_image->p_filter->fmt_in.video.i_chroma != p_fmt_in->i_chroma ||
415 p_image->p_filter->fmt_out.video.i_chroma != p_fmt_out->i_chroma )
417 /* We need to restart a new filter */
418 DeleteFilter( p_image->p_filter );
419 p_image->p_filter = NULL;
423 if( !p_image->p_filter )
426 es_format_Init( &fmt_in, VIDEO_ES, p_fmt_in->i_chroma );
427 fmt_in.video = *p_fmt_in;
430 CreateFilter( p_image->p_parent, &fmt_in, p_fmt_out, NULL );
432 if( !p_image->p_filter )
439 /* Filters should handle on-the-fly size changes */
440 p_image->p_filter->fmt_in.video = *p_fmt_in;
441 p_image->p_filter->fmt_out.video = *p_fmt_out;
444 pf_release = p_pic->pf_release;
445 p_pic->pf_release = PicRelease; /* Small hack */
446 p_pif = p_image->p_filter->pf_video_filter( p_image->p_filter, p_pic );
447 p_pic->pf_release = pf_release;
449 if( p_fmt_in->i_chroma == p_fmt_out->i_chroma &&
450 p_fmt_in->i_width == p_fmt_out->i_width &&
451 p_fmt_in->i_height == p_fmt_out->i_height )
453 /* Duplicate image */
454 p_pif->pf_release( p_pif ); /* XXX: Better fix must be possible */
455 p_pif = p_image->p_filter->pf_vout_buffer_new( p_image->p_filter );
456 if( p_pif ) vout_CopyPicture( p_image->p_parent, p_pif, p_pic );
463 * Filter an image with a psz_module filter
467 static picture_t *ImageFilter( image_handler_t *p_image, picture_t *p_pic,
468 video_format_t *p_fmt, const char *psz_module )
470 void (*pf_release)( picture_t * );
474 if( !p_image->p_filter )
477 es_format_Init( &fmt, VIDEO_ES, p_fmt->i_chroma );
481 CreateFilter( p_image->p_parent, &fmt, &fmt.video, psz_module );
483 if( !p_image->p_filter )
490 /* Filters should handle on-the-fly size changes */
491 p_image->p_filter->fmt_in.video = *p_fmt;
492 p_image->p_filter->fmt_out.video = *p_fmt;
495 pf_release = p_pic->pf_release;
496 p_pic->pf_release = PicRelease; /* Small hack */
497 p_pif = p_image->p_filter->pf_video_filter( p_image->p_filter, p_pic );
498 p_pic->pf_release = pf_release;
509 vlc_fourcc_t i_codec;
514 { VLC_FOURCC('j','p','e','g'), "jpeg" },
515 { VLC_FOURCC('j','p','e','g'), "jpg" },
516 { VLC_FOURCC('l','j','p','g'), "ljpg" },
517 { VLC_FOURCC('p','n','g',' '), "png" },
518 { VLC_FOURCC('p','g','m',' '), "pgm" },
519 { VLC_FOURCC('p','g','m','y'), "pgmyuv" },
520 { VLC_FOURCC('p','b','m',' '), "pbm" },
521 { VLC_FOURCC('p','a','m',' '), "pam" },
522 { VLC_FOURCC('t','g','a',' '), "tga" },
523 { VLC_FOURCC('b','m','p',' '), "bmp" },
524 { VLC_FOURCC('p','n','m',' '), "pnm" },
525 { VLC_FOURCC('x','p','m',' '), "xpm" },
526 { VLC_FOURCC('x','c','f',' '), "xcf" },
527 { VLC_FOURCC('p','c','x',' '), "pcx" },
528 { VLC_FOURCC('g','i','f',' '), "gif" },
529 { VLC_FOURCC('t','i','f','f'), "tif" },
530 { VLC_FOURCC('t','i','f','f'), "tiff" },
531 { VLC_FOURCC('l','b','m',' '), "lbm" },
535 static vlc_fourcc_t Ext2Fourcc( const char *psz_name )
539 psz_name = strrchr( psz_name, '.' );
540 if( !psz_name ) return 0;
543 for( i = 0; ext_table[i].i_codec; i++ )
546 for( j = 0; toupper(ext_table[i].psz_ext[j]) == toupper(psz_name[j]);
549 if( !ext_table[i].psz_ext[j] && !psz_name[j] )
550 return ext_table[i].i_codec;
558 static const char *Fourcc2Ext( vlc_fourcc_t i_codec )
562 for( i = 0; ext_table[i].i_codec != 0; i++ )
564 if( ext_table[i].i_codec == i_codec ) return ext_table[i].psz_ext;
571 static void video_release_buffer( picture_t *p_pic )
573 if( p_pic && p_pic->p_data_orig ) free( p_pic->p_data_orig );
574 if( p_pic && p_pic->p_sys ) free( p_pic->p_sys );
575 if( p_pic ) free( p_pic );
578 static picture_t *video_new_buffer( decoder_t *p_dec )
580 picture_t *p_pic = malloc( sizeof(picture_t) );
582 p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
583 vout_AllocatePicture( VLC_OBJECT(p_dec), p_pic,
584 p_dec->fmt_out.video.i_chroma,
585 p_dec->fmt_out.video.i_width,
586 p_dec->fmt_out.video.i_height,
587 p_dec->fmt_out.video.i_aspect );
589 if( !p_pic->i_planes )
595 p_pic->pf_release = video_release_buffer;
596 p_pic->i_status = RESERVED_PICTURE;
602 static void video_del_buffer( decoder_t *p_dec, picture_t *p_pic )
605 if( p_pic && p_pic->p_data_orig ) free( p_pic->p_data_orig );
606 if( p_pic && p_pic->p_sys ) free( p_pic->p_sys );
607 if( p_pic ) free( p_pic );
610 static void video_link_picture( decoder_t *p_dec, picture_t *p_pic )
612 (void)p_dec; (void)p_pic;
615 static void video_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
617 (void)p_dec; (void)p_pic;
620 static decoder_t *CreateDecoder( vlc_object_t *p_this, video_format_t *fmt )
624 p_dec = vlc_object_create( p_this, VLC_OBJECT_DECODER );
627 msg_Err( p_this, "out of memory" );
631 p_dec->p_module = NULL;
632 es_format_Init( &p_dec->fmt_in, VIDEO_ES, fmt->i_chroma );
633 es_format_Init( &p_dec->fmt_out, VIDEO_ES, 0 );
634 p_dec->fmt_in.video = *fmt;
635 p_dec->b_pace_control = VLC_TRUE;
637 p_dec->pf_vout_buffer_new = video_new_buffer;
638 p_dec->pf_vout_buffer_del = video_del_buffer;
639 p_dec->pf_picture_link = video_link_picture;
640 p_dec->pf_picture_unlink = video_unlink_picture;
642 vlc_object_attach( p_dec, p_this );
644 /* Find a suitable decoder module */
645 p_dec->p_module = module_Need( p_dec, "decoder", "$codec", 0 );
646 if( !p_dec->p_module )
648 msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
649 "VLC probably does not support this image format.",
650 (char*)&p_dec->fmt_in.i_codec );
652 DeleteDecoder( p_dec );
659 static void DeleteDecoder( decoder_t * p_dec )
661 vlc_object_detach( p_dec );
663 if( p_dec->p_module ) module_Unneed( p_dec, p_dec->p_module );
665 es_format_Clean( &p_dec->fmt_in );
666 es_format_Clean( &p_dec->fmt_out );
668 vlc_object_destroy( p_dec );
672 static encoder_t *CreateEncoder( vlc_object_t *p_this, video_format_t *fmt_in,
673 video_format_t *fmt_out )
677 p_enc = vlc_object_create( p_this, VLC_OBJECT_ENCODER );
680 msg_Err( p_this, "out of memory" );
684 p_enc->p_module = NULL;
685 es_format_Init( &p_enc->fmt_in, VIDEO_ES, fmt_in->i_chroma );
686 p_enc->fmt_in.video = *fmt_in;
687 if( fmt_out->i_width > 0 && fmt_out->i_height > 0 )
689 p_enc->fmt_in.video.i_width = fmt_out->i_width;
690 p_enc->fmt_in.video.i_height = fmt_out->i_height;
692 if( fmt_out->i_visible_width > 0 &&
693 fmt_out->i_visible_height > 0 )
695 p_enc->fmt_in.video.i_visible_width = fmt_out->i_visible_width;
696 p_enc->fmt_in.video.i_visible_height = fmt_out->i_visible_height;
700 p_enc->fmt_in.video.i_visible_width = fmt_out->i_width;
701 p_enc->fmt_in.video.i_visible_height = fmt_out->i_height;
704 else if( fmt_out->i_sar_num && fmt_out->i_sar_den &&
705 fmt_out->i_sar_num * fmt_in->i_sar_den !=
706 fmt_out->i_sar_den * fmt_in->i_sar_num )
708 p_enc->fmt_in.video.i_width =
709 fmt_in->i_sar_num * (int64_t)fmt_out->i_sar_den * fmt_in->i_width /
710 fmt_in->i_sar_den / fmt_out->i_sar_num;
711 p_enc->fmt_in.video.i_visible_width =
712 fmt_in->i_sar_num * (int64_t)fmt_out->i_sar_den *
713 fmt_in->i_visible_width / fmt_in->i_sar_den / fmt_out->i_sar_num;
716 p_enc->fmt_in.video.i_frame_rate = 25;
717 p_enc->fmt_in.video.i_frame_rate_base = 1;
719 es_format_Init( &p_enc->fmt_out, VIDEO_ES, fmt_out->i_chroma );
720 p_enc->fmt_out.video = *fmt_out;
721 p_enc->fmt_out.video.i_width = p_enc->fmt_in.video.i_width;
722 p_enc->fmt_out.video.i_height = p_enc->fmt_in.video.i_height;
724 vlc_object_attach( p_enc, p_this );
726 /* Find a suitable decoder module */
727 p_enc->p_module = module_Need( p_enc, "encoder", 0, 0 );
728 if( !p_enc->p_module )
730 msg_Err( p_enc, "no suitable encoder module for fourcc `%4.4s'.\n"
731 "VLC probably does not support this image format.",
732 (char*)&p_enc->fmt_out.i_codec );
734 DeleteEncoder( p_enc );
737 p_enc->fmt_in.video.i_chroma = p_enc->fmt_in.i_codec;
742 static void DeleteEncoder( encoder_t * p_enc )
744 vlc_object_detach( p_enc );
746 if( p_enc->p_module ) module_Unneed( p_enc, p_enc->p_module );
748 es_format_Clean( &p_enc->fmt_in );
749 es_format_Clean( &p_enc->fmt_out );
751 vlc_object_destroy( p_enc );
755 static filter_t *CreateFilter( vlc_object_t *p_this, es_format_t *p_fmt_in,
756 video_format_t *p_fmt_out,
757 const char *psz_module )
761 p_filter = vlc_object_create( p_this, VLC_OBJECT_FILTER );
762 vlc_object_attach( p_filter, p_this );
764 p_filter->pf_vout_buffer_new =
765 (picture_t *(*)(filter_t *))video_new_buffer;
766 p_filter->pf_vout_buffer_del =
767 (void (*)(filter_t *, picture_t *))video_del_buffer;
769 p_filter->fmt_in = *p_fmt_in;
770 p_filter->fmt_out = *p_fmt_in;
771 p_filter->fmt_out.i_codec = p_fmt_out->i_chroma;
772 p_filter->fmt_out.video = *p_fmt_out;
773 p_filter->p_module = module_Need( p_filter, "video filter2",
776 if( !p_filter->p_module )
778 msg_Dbg( p_filter, "no video filter found" );
779 DeleteFilter( p_filter );
786 static void DeleteFilter( filter_t * p_filter )
788 vlc_object_detach( p_filter );
790 if( p_filter->p_module ) module_Unneed( p_filter, p_filter->p_module );
792 es_format_Clean( &p_filter->fmt_in );
793 es_format_Clean( &p_filter->fmt_out );
795 vlc_object_destroy( p_filter );