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 *****************************************************************************/
35 #include <vlc_common.h>
36 #include <vlc_plugin.h>
38 #include <vlc_codec.h>
40 #include <vlc_input.h>
42 #include <csri/csri.h>
43 #include <csri/stream.h>
45 /*****************************************************************************
47 *****************************************************************************/
48 static int Create ( vlc_object_t * );
49 static void Destroy( vlc_object_t * );
52 set_shortname( N_("Subtitles (advanced)"))
53 set_description( N_("Wrapper for subtitle renderers using CSRI/asa") )
54 set_capability( "decoder", 60 )
55 set_category( CAT_INPUT )
56 set_subcategory( SUBCAT_INPUT_SCODEC )
57 set_callbacks( Create, Destroy )
60 /*****************************************************************************
62 *****************************************************************************/
63 static subpicture_t *DecodeBlock( decoder_t *, block_t ** );
64 static void DestroySubpicture( subpicture_t * );
65 static void PreRender( spu_t *, subpicture_t *, const video_format_t * );
66 static void UpdateRegions( spu_t *, subpicture_t *,
67 const video_format_t *, mtime_t );
69 /*****************************************************************************
70 * decoder_sys_t: decoder data
71 *****************************************************************************/
74 subpicture_t *p_spu_final;
75 video_format_t fmt_cached;
76 csri_inst *p_instance;
78 struct csri_stream_ext *p_stream_ext;
80 void (*pf_push_packet)(csri_inst *inst, const void *packet,
81 size_t packetlen, double pts_start,
85 struct subpicture_sys_t
93 /*****************************************************************************
94 * Create: Open CSRI renderer
95 *****************************************************************************
97 *****************************************************************************/
98 static int Create( vlc_object_t *p_this )
100 decoder_t *p_dec = (decoder_t *)p_this;
101 decoder_sys_t *p_sys;
103 struct csri_stream_ext *p_stream_ext;
105 if( p_dec->fmt_in.i_codec != VLC_FOURCC('s','s','a',' ') )
108 p_render = csri_renderer_default();
111 msg_Err( p_dec, "can't load csri renderer" );
114 p_stream_ext = csri_query_ext(p_render, CSRI_EXT_STREAM_ASS);
117 msg_Err( p_dec, "csri renderer does not support ASS streaming" );
121 p_dec->pf_decode_sub = DecodeBlock;
123 p_dec->p_sys = p_sys = malloc( sizeof( decoder_sys_t ) );
126 memset( &p_sys->fmt_cached, 0, sizeof( p_sys->fmt_cached ) );
128 p_sys->p_stream_ext = p_stream_ext;
129 p_sys->pf_push_packet = p_stream_ext->push_packet;
130 p_sys->p_instance = p_stream_ext->init_stream( p_render,
131 p_dec->fmt_in.p_extra,
132 p_dec->fmt_in.p_extra ? strnlen( p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra ) : 0,
137 /*****************************************************************************
139 *****************************************************************************
141 *****************************************************************************/
142 static void Destroy( vlc_object_t *p_this )
144 decoder_t *p_dec = (decoder_t *)p_this;
145 decoder_sys_t *p_sys = p_dec->p_sys;
147 if( p_sys->p_stream_ext->discard )
148 p_sys->p_stream_ext->discard( p_sys->p_instance, true );
152 /****************************************************************************
153 * DecodeBlock: the whole thing
154 ****************************************************************************
155 * This function must be fed with complete subtitles units.
156 ****************************************************************************/
157 static subpicture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
159 decoder_sys_t *p_sys = p_dec->p_sys;
161 subpicture_t *p_spu = NULL;
164 //msg_Dbg( p_dec, "DecodeBlock %p", (void *)pp_block);
165 if( !pp_block || *pp_block == NULL )
171 if( p_block->i_buffer == 0 || p_block->p_buffer[0] == '\0' )
173 block_Release( p_block );
177 p_spu = decoder_NewSubpicture( p_dec );
180 msg_Warn( p_dec, "can't get spu buffer" );
181 block_Release( p_block );
185 p_spu->p_sys = malloc( sizeof( subpicture_sys_t ));
188 decoder_DeleteSubpicture( p_dec, p_spu );
189 block_Release( p_block );
192 p_spu->p_sys->p_dec = p_dec;
194 p_spu->p_sys->i_subs_len = p_block->i_buffer;
195 p_spu->p_sys->p_subs_data = malloc( p_block->i_buffer );
196 if( !p_spu->p_sys->p_subs_data )
198 free( p_spu->p_sys );
199 decoder_DeleteSubpicture( p_dec, p_spu );
200 block_Release( p_block );
203 memcpy( p_spu->p_sys->p_subs_data, p_block->p_buffer,
205 p_spu->p_sys->i_pts = p_block->i_pts;
207 p_spu->i_start = p_block->i_pts;
208 p_spu->i_stop = p_block->i_pts + p_block->i_length;
209 p_spu->b_ephemer = false;
210 p_spu->b_absolute = false;
212 //msg_Dbg( p_dec, "BS %lf..%lf", p_spu->i_start * 0.000001, p_spu->i_stop * 0.000001);
213 p_sys->pf_push_packet( p_sys->p_instance,
214 p_spu->p_sys->p_subs_data, p_spu->p_sys->i_subs_len,
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( p_block );
227 static void DestroySubpicture( subpicture_t *p_subpic )
229 //msg_Dbg( p_subpic->p_sys->p_dec, "drop spu %p", (void *)p_subpic );
230 free( p_subpic->p_sys->p_subs_data );
231 free( p_subpic->p_sys );
234 static void PreRender( spu_t *p_spu, subpicture_t *p_subpic,
235 const video_format_t *p_fmt )
237 decoder_t *p_dec = p_subpic->p_sys->p_dec;
238 p_dec->p_sys->p_spu_final = p_subpic;
243 static void UpdateRegions( spu_t *p_spu, subpicture_t *p_subpic,
244 const video_format_t *p_fmt, mtime_t i_ts )
246 decoder_t *p_dec = p_subpic->p_sys->p_dec;
247 decoder_sys_t *p_sys = p_dec->p_sys;
249 subpicture_region_t *p_spu_region;
252 /* TODO maybe checking if we really need redrawing */
253 subpicture_region_ChainDelete( p_subpic->p_region );
254 p_subpic->p_region = NULL;
256 /* FIXME check why this is needed */
257 if( p_subpic != p_sys->p_spu_final )
261 msg_Warn( p_dec, "---- fmt: %dx%d %dx%d chroma=%4.4s",
262 p_fmt->i_width, p_fmt->i_height,
263 p_fmt->i_visible_width, p_fmt->i_visible_height,
264 (const char*)&p_fmt->i_chroma );
266 /* XXX On x86 at least our RGBA is mapped to their BGRA
267 * TODO confirm that is the same on big endian cpu */
269 fmt.i_chroma = VLC_FOURCC('R','G','B','A');
270 fmt.i_width = fmt.i_visible_width;
271 fmt.i_height = fmt.i_visible_height;
272 fmt.i_bits_per_pixel = 0;
273 fmt.i_x_offset = fmt.i_y_offset = 0;
277 if( memcmp(&fmt, &p_sys->fmt_cached, sizeof(fmt)) )
279 //msg_Warn( p_dec, "---- fmt: new %dx%d", fmt.i_width, fmt.i_height );
281 struct csri_fmt csri_fmt;
282 memset(&csri_fmt, 0, sizeof(csri_fmt));
283 csri_fmt.pixfmt = CSRI_F_BGRA;
284 csri_fmt.width = fmt.i_width;
285 csri_fmt.height = fmt.i_height;
286 if( csri_request_fmt( p_sys->p_instance, &csri_fmt ) )
287 msg_Dbg( p_dec, "csri error: format not supported" );
289 p_sys->fmt_cached = fmt;
292 p_subpic->i_original_picture_height = fmt.i_height;
293 p_subpic->i_original_picture_width = fmt.i_width;
295 p_spu_region = p_subpic->p_region = subpicture_region_New( &fmt );
299 struct csri_frame csri_frame;
302 p_spu_region->i_align = SUBPICTURE_ALIGN_TOP | SUBPICTURE_ALIGN_LEFT;
303 memset( p_spu_region->p_picture->Y_PIXELS, 0x00, p_spu_region->p_picture->Y_PITCH * p_sys->fmt_cached.i_height );
306 const mtime_t i_stream_date = p_subpic->p_sys->i_pts + (i_ts - p_subpic->i_start);
308 //msg_Dbg( p_dec, "TS %lf", ts * 0.000001 );
309 memset( &csri_frame, 0, sizeof(csri_frame) );
310 csri_frame.pixfmt = CSRI_F_BGRA;
311 csri_frame.planes[0] = (unsigned char*)p_spu_region->p_picture->Y_PIXELS;
312 csri_frame.strides[0] = p_spu_region->p_picture->Y_PITCH;
313 csri_render( p_sys->p_instance, &csri_frame, i_stream_date * 0.000001 );