1 /*****************************************************************************
2 * subpicture.c: Subpicture functions
3 *****************************************************************************
4 * Copyright (C) 2010 Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
6 * Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU Lesser General Public License as published by
10 * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public License
19 * along with this program; if not, write to the Free Software Foundation,
20 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21 *****************************************************************************/
23 /*****************************************************************************
25 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_image.h>
34 #include <vlc_subpicture.h>
35 #include "subpicture.h"
37 struct subpicture_private_t
43 subpicture_t
*subpicture_New( const subpicture_updater_t
*p_upd
)
45 subpicture_t
*p_subpic
= calloc( 1, sizeof(*p_subpic
) );
49 p_subpic
->i_order
= 0;
50 p_subpic
->b_absolute
= true;
51 p_subpic
->b_fade
= false;
52 p_subpic
->b_subtitle
= false;
53 p_subpic
->i_alpha
= 0xFF;
54 p_subpic
->p_region
= NULL
;
58 subpicture_private_t
*p_private
= malloc( sizeof(*p_private
) );
64 video_format_Init( &p_private
->src
, 0 );
65 video_format_Init( &p_private
->dst
, 0 );
67 p_subpic
->updater
= *p_upd
;
68 p_subpic
->p_private
= p_private
;
72 p_subpic
->p_private
= NULL
;
74 p_subpic
->updater
.pf_validate
= NULL
;
75 p_subpic
->updater
.pf_update
= NULL
;
76 p_subpic
->updater
.pf_destroy
= NULL
;
77 p_subpic
->updater
.p_sys
= NULL
;
82 void subpicture_Delete( subpicture_t
*p_subpic
)
84 subpicture_region_ChainDelete( p_subpic
->p_region
);
85 p_subpic
->p_region
= NULL
;
87 if( p_subpic
->updater
.pf_destroy
)
88 p_subpic
->updater
.pf_destroy( p_subpic
);
90 if( p_subpic
->p_private
)
92 video_format_Clean( &p_subpic
->p_private
->src
);
93 video_format_Clean( &p_subpic
->p_private
->dst
);
96 free( p_subpic
->p_private
);
100 subpicture_t
*subpicture_NewFromPicture( vlc_object_t
*p_obj
,
101 picture_t
*p_picture
, vlc_fourcc_t i_chroma
)
104 video_format_t fmt_in
= p_picture
->format
;
107 video_format_t fmt_out
;
109 fmt_out
.i_chroma
= i_chroma
;
112 image_handler_t
*p_image
= image_HandlerCreate( p_obj
);
116 picture_t
*p_pip
= image_Convert( p_image
, p_picture
, &fmt_in
, &fmt_out
);
118 image_HandlerDelete( p_image
);
123 subpicture_t
*p_subpic
= subpicture_New( NULL
);
126 picture_Release( p_pip
);
130 p_subpic
->i_original_picture_width
= fmt_out
.i_visible_width
;
131 p_subpic
->i_original_picture_height
= fmt_out
.i_visible_height
;
134 fmt_out
.i_sar_den
= 0;
136 p_subpic
->p_region
= subpicture_region_New( &fmt_out
);
137 if( p_subpic
->p_region
)
139 picture_Release( p_subpic
->p_region
->p_picture
);
140 p_subpic
->p_region
->p_picture
= p_pip
;
144 picture_Release( p_pip
);
149 void subpicture_Update( subpicture_t
*p_subpicture
,
150 const video_format_t
*p_fmt_src
,
151 const video_format_t
*p_fmt_dst
,
154 subpicture_updater_t
*p_upd
= &p_subpicture
->updater
;
155 subpicture_private_t
*p_private
= p_subpicture
->p_private
;
157 if( !p_upd
->pf_validate
)
159 if( !p_upd
->pf_validate( p_subpicture
,
160 !video_format_IsSimilar( p_fmt_src
,
161 &p_private
->src
), p_fmt_src
,
162 !video_format_IsSimilar( p_fmt_dst
,
163 &p_private
->dst
), p_fmt_dst
,
167 subpicture_region_ChainDelete( p_subpicture
->p_region
);
168 p_subpicture
->p_region
= NULL
;
170 p_upd
->pf_update( p_subpicture
, p_fmt_src
, p_fmt_dst
, i_ts
);
172 video_format_Clean( &p_private
->src
);
173 video_format_Clean( &p_private
->dst
);
175 video_format_Copy( &p_private
->src
, p_fmt_src
);
176 video_format_Copy( &p_private
->dst
, p_fmt_dst
);
180 subpicture_region_private_t
*subpicture_region_private_New( video_format_t
*p_fmt
)
182 subpicture_region_private_t
*p_private
= malloc( sizeof(*p_private
) );
187 if ( video_format_Copy( &p_private
->fmt
, p_fmt
) != VLC_SUCCESS
)
193 p_private
->p_picture
= NULL
;
197 void subpicture_region_private_Delete( subpicture_region_private_t
*p_private
)
199 if( p_private
->p_picture
)
200 picture_Release( p_private
->p_picture
);
201 video_format_Clean( &p_private
->fmt
);
205 subpicture_region_t
* subpicture_region_NewInternal( const video_format_t
*p_fmt
)
207 subpicture_region_t
*p_region
= calloc( 1, sizeof(*p_region
) );
211 p_region
->zoom_h
.den
= p_region
->zoom_h
.num
= 1;
212 p_region
->zoom_v
.den
= p_region
->zoom_v
.num
= 1;
214 if ( p_fmt
->i_chroma
== VLC_CODEC_YUVP
)
216 video_format_Copy( &p_region
->fmt
, p_fmt
);
217 /* YUVP should have a palette */
218 if( p_region
->fmt
.p_palette
== NULL
)
220 p_region
->fmt
.p_palette
= calloc( 1, sizeof(*p_region
->fmt
.p_palette
) );
221 if( p_region
->fmt
.p_palette
== NULL
)
230 p_region
->fmt
= *p_fmt
;
231 p_region
->fmt
.p_palette
= NULL
;
234 p_region
->i_alpha
= 0xff;
235 p_region
->b_balanced_text
= true;
240 subpicture_region_t
*subpicture_region_New( const video_format_t
*p_fmt
)
242 subpicture_region_t
*p_region
=
243 subpicture_region_NewInternal( p_fmt
);
247 if( p_fmt
->i_chroma
== VLC_CODEC_TEXT
)
250 p_region
->p_picture
= picture_NewFromFormat( p_fmt
);
251 if( !p_region
->p_picture
)
253 video_format_Clean( &p_region
->fmt
);
261 void subpicture_region_Delete( subpicture_region_t
*p_region
)
266 if( p_region
->p_private
)
267 subpicture_region_private_Delete( p_region
->p_private
);
269 if( p_region
->p_picture
)
270 picture_Release( p_region
->p_picture
);
272 text_segment_ChainDelete( p_region
->p_text
);
273 video_format_Clean( &p_region
->fmt
);
277 void subpicture_region_ChainDelete( subpicture_region_t
*p_head
)
281 subpicture_region_t
*p_next
= p_head
->p_next
;
283 subpicture_region_Delete( p_head
);
289 #include <vlc_filter.h>
291 unsigned picture_BlendSubpicture(picture_t
*dst
,
292 vlc_blender_t
*blend
, subpicture_t
*src
)
296 assert(src
&& !src
->b_fade
&& src
->b_absolute
);
298 for (subpicture_region_t
*r
= src
->p_region
; r
!= NULL
; r
= r
->p_next
) {
299 assert(r
->p_picture
&& r
->i_align
== 0);
300 if (filter_ConfigureBlend(blend
, dst
->format
.i_width
,
301 dst
->format
.i_height
, &r
->fmt
)
302 || filter_Blend(blend
, dst
, r
->i_x
, r
->i_y
, r
->p_picture
,
303 src
->i_alpha
* r
->i_alpha
/ 255))
304 msg_Err(blend
, "blending %4.4s to %4.4s failed",
305 (char *)&blend
->fmt_in
.video
.i_chroma
,
306 (char *)&blend
->fmt_out
.video
.i_chroma
);
313 subpicture_region_t
* subpicture_region_Copy( subpicture_region_t
*p_region_src
)
317 subpicture_region_t
*p_region_dst
= subpicture_region_New(&p_region_src
->fmt
);
318 if (unlikely(!p_region_dst
))
321 p_region_dst
->i_x
= p_region_src
->i_x
;
322 p_region_dst
->i_y
= p_region_src
->i_y
;
323 p_region_dst
->i_align
= p_region_src
->i_align
;
324 p_region_dst
->i_alpha
= p_region_src
->i_alpha
;
326 p_region_dst
->p_text
= text_segment_Copy( p_region_src
->p_text
);
328 //Palette is already copied by subpicture_region_New, we just have to duplicate p_pixels
329 for (int i
= 0; i
< p_region_src
->p_picture
->i_planes
; i
++)
330 memcpy(p_region_dst
->p_picture
->p
[i
].p_pixels
,
331 p_region_src
->p_picture
->p
[i
].p_pixels
,
332 p_region_src
->p_picture
->p
[i
].i_lines
* p_region_src
->p_picture
->p
[i
].i_pitch
);