1 /*****************************************************************************
2 * csri.c : Load CSRI subtitle renderer
3 *****************************************************************************
4 * Copyright (C) 2007 the VideoLAN team
7 * Authors: David Lamparter <equinox@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 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
33 #include <vlc_codec.h>
35 #include <vlc_block.h>
36 #include <vlc_filter.h>
37 #include <vlc_stream.h>
46 #include <csri/csri.h>
47 #include <csri/stream.h>
49 /*****************************************************************************
51 *****************************************************************************/
52 static int Create ( vlc_object_t * );
53 static void Destroy( vlc_object_t * );
55 static subpicture_t *DecodeBlock( decoder_t *, block_t ** );
56 static void DestroySubpicture( subpicture_t * );
57 static void PreRender( video_format_t *, spu_t *, subpicture_t *, mtime_t );
58 static subpicture_region_t *UpdateRegions( video_format_t *, spu_t *,
59 subpicture_t *, mtime_t );
61 /*****************************************************************************
63 *****************************************************************************/
66 set_shortname( _("Subtitles (advanced)"));
67 set_description( _("Wrapper for subtitle renderers using CSRI/asa") );
68 set_capability( "decoder", 60 );
69 set_category( CAT_INPUT );
70 set_subcategory( SUBCAT_INPUT_SCODEC );
71 set_callbacks( Create, Destroy );
74 /*****************************************************************************
75 * decoder_sys_t: filter data
76 *****************************************************************************/
79 subpicture_t *p_spu_final;
80 video_format_t fmt_cached;
81 csri_inst *p_instance;
82 void (*pf_push_packet)(csri_inst *inst, const void *packet,
83 size_t packetlen, double pts_start,
87 struct subpicture_sys_t
94 /*****************************************************************************
95 * Create: Open CSRI renderer
96 *****************************************************************************
98 *****************************************************************************/
99 static int Create( vlc_object_t *p_this )
101 decoder_t *p_dec = (decoder_t *)p_this;
102 decoder_sys_t *p_sys;
104 struct csri_stream_ext *p_streamext;
106 if( p_dec->fmt_in.i_codec != VLC_FOURCC('s','s','a',' ') )
111 p_render = csri_renderer_default();
114 msg_Err( p_dec, "can't load csri renderer" );
117 p_streamext = csri_query_ext(p_render, CSRI_EXT_STREAM_ASS);
120 msg_Err( p_dec, "csri renderer does not support ASS streaming" );
124 p_dec->pf_decode_sub = DecodeBlock;
126 p_dec->p_sys = p_sys = malloc( sizeof( decoder_sys_t ) );
129 msg_Err( p_dec, "out of memory" );
132 memset( &p_dec->p_sys->fmt_cached, 0, sizeof( p_dec->p_sys->fmt_cached ) );
134 p_sys->pf_push_packet = p_streamext->push_packet;
135 p_sys->p_instance = p_streamext->init_stream(p_render,
136 p_dec->fmt_in.p_extra,
137 p_dec->fmt_in.i_extra - 1,
142 /*****************************************************************************
144 *****************************************************************************
146 *****************************************************************************/
147 static void Destroy( vlc_object_t *p_this )
149 filter_t *p_filter = (filter_t *)p_this;
150 filter_sys_t *p_sys = p_filter->p_sys;
155 /****************************************************************************
156 * DecodeBlock: the whole thing
157 ****************************************************************************
158 * This function must be fed with complete subtitles units.
159 ****************************************************************************/
160 static subpicture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
162 subpicture_t *p_spu = NULL;
165 msg_Dbg( p_dec, "DecodeBlock %p", (void *)pp_block);
166 if( !pp_block || *pp_block == NULL ) return NULL;
168 if( p_block->i_buffer == 0 || p_block->p_buffer[0] == '\0' ) return NULL;
170 p_spu = p_dec->pf_spu_buffer_new( p_dec );
173 msg_Warn( p_dec, "can't get spu buffer" );
174 block_Release( *pp_block );
179 p_spu->p_sys = malloc( sizeof( subpicture_sys_t ));
182 msg_Err( p_dec, "out of memory" );
183 p_dec->pf_spu_buffer_del( p_dec, p_spu );
184 block_Release( *pp_block );
188 p_spu->p_sys->p_dec = p_dec;
190 p_spu->p_sys->i_subs_len = p_block->i_buffer;
191 p_spu->p_sys->p_subs_data = malloc( p_block->i_buffer );
192 if( !p_spu->p_sys->p_subs_data )
194 msg_Err( p_dec, "out of memory" );
195 free( p_spu->p_sys );
196 p_dec->pf_spu_buffer_del( p_dec, p_spu );
197 block_Release( *pp_block );
201 memcpy( p_spu->p_sys->p_subs_data, p_block->p_buffer,
206 p_spu->i_start = p_block->i_pts;
207 p_spu->i_stop = p_block->i_pts + p_block->i_length;
208 p_spu->b_ephemer = VLC_FALSE;
209 p_spu->b_absolute = VLC_FALSE;
210 p_spu->b_pausable = VLC_TRUE;
212 msg_Dbg( p_dec, "BS %lf..%lf", p_spu->i_start * 0.000001, p_spu->i_stop * 0.000001);
213 p_dec->p_sys->pf_push_packet(p_dec->p_sys->p_instance,
214 p_spu->p_sys->p_subs_data, p_block->i_buffer,
215 p_spu->i_start * 0.000001,
216 p_spu->i_stop * 0.000001);
218 p_spu->pf_pre_render = PreRender;
219 p_spu->pf_update_regions = UpdateRegions;
220 p_spu->pf_destroy = DestroySubpicture;
222 block_Release( *pp_block );
228 static void DestroySubpicture( subpicture_t *p_subpic )
230 msg_Dbg( p_subpic->p_sys->p_dec, "drop spu %p", (void *)p_subpic );
231 free( p_subpic->p_sys->p_subs_data );
232 free( p_subpic->p_sys );
235 static void PreRender( video_format_t *p_fmt, spu_t *p_spu,
236 subpicture_t *p_subpic, mtime_t ts )
238 decoder_t *p_dec = p_subpic->p_sys->p_dec;
239 p_dec->p_sys->p_spu_final = p_subpic;
242 static subpicture_region_t *UpdateRegions( video_format_t *p_fmt, spu_t *p_spu,
243 subpicture_t *p_subpic, mtime_t ts )
245 decoder_t *p_dec = p_subpic->p_sys->p_dec;
246 subpicture_region_t *p_spu_region;
248 struct csri_frame csri_frame;
250 if (p_subpic != p_dec->p_sys->p_spu_final)
255 memcpy( &fmt, p_fmt, sizeof( fmt ) );
256 fmt.i_chroma = VLC_FOURCC('R','G','B','A');
257 fmt.i_width = fmt.i_visible_width;
258 fmt.i_height = fmt.i_visible_height;
259 fmt.i_bits_per_pixel = 0;
260 fmt.i_x_offset = fmt.i_y_offset = 0;
262 if (memcmp(&fmt, &p_dec->p_sys->fmt_cached, sizeof(fmt)))
264 struct csri_fmt csri_fmt;
265 memset(&csri_fmt, 0, sizeof(csri_fmt));
266 csri_fmt.pixfmt = CSRI_F_RGBA;
267 csri_fmt.width = fmt.i_width;
268 csri_fmt.height = fmt.i_height;
269 if( csri_request_fmt(p_dec->p_sys->p_instance, &csri_fmt) )
270 msg_Dbg( p_dec, "csri error: format not supported" );
272 memcpy(&p_dec->p_sys->fmt_cached, &fmt, sizeof(fmt));
275 p_spu_region = p_subpic->pf_create_region( VLC_OBJECT(p_dec), &fmt );
276 p_spu_region->i_align = SUBPICTURE_ALIGN_TOP;
278 csri_frame.pixfmt = CSRI_F_RGBA;
279 csri_frame.planes[0] = (unsigned char*)p_spu_region->picture.Y_PIXELS;
280 csri_frame.strides[0] = p_spu_region->picture.Y_PITCH;
282 msg_Dbg( p_dec, "TS %lf", ts * 0.000001 );
283 csri_render( p_dec->p_sys->p_instance, &csri_frame, ts * 0.000001 );
284 memset(p_spu_region->picture.Y_PIXELS, 0xff, fmt.i_width);
285 memset(p_spu_region->picture.Y_PIXELS + p_spu_region->picture.Y_PITCH
286 * (fmt.i_height - 1), 0x88, fmt.i_width);
288 p_subpic->p_region = p_spu_region;