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 *****************************************************************************/
31 #include <vlc_common.h>
32 #include <vlc_plugin.h>
34 #include <vlc_codec.h>
36 #include <vlc_block.h>
37 #include <vlc_filter.h>
38 #include <vlc_stream.h>
47 #include <csri/csri.h>
48 #include <csri/stream.h>
50 /*****************************************************************************
52 *****************************************************************************/
53 static int Create ( vlc_object_t * );
54 static void Destroy( vlc_object_t * );
57 set_shortname( N_("Subtitles (advanced)"));
58 set_description( N_("Wrapper for subtitle renderers using CSRI/asa") );
59 set_capability( "decoder", 60 );
60 set_category( CAT_INPUT );
61 set_subcategory( SUBCAT_INPUT_SCODEC );
62 set_callbacks( Create, Destroy );
65 /*****************************************************************************
67 *****************************************************************************/
68 static subpicture_t *DecodeBlock( decoder_t *, block_t ** );
69 static void DestroySubpicture( subpicture_t * );
70 static void PreRender( video_format_t *, spu_t *, subpicture_t *, mtime_t );
71 static subpicture_region_t *UpdateRegions( video_format_t *, spu_t *,
72 subpicture_t *, mtime_t );
74 /*****************************************************************************
75 * decoder_sys_t: decoder data
76 *****************************************************************************/
79 subpicture_t *p_spu_final;
80 video_format_t fmt_cached;
81 csri_inst *p_instance;
83 struct csri_stream_ext *p_stream_ext;
85 void (*pf_push_packet)(csri_inst *inst, const void *packet,
86 size_t packetlen, double pts_start,
90 struct subpicture_sys_t
97 /*****************************************************************************
98 * Create: Open CSRI renderer
99 *****************************************************************************
101 *****************************************************************************/
102 static int Create( vlc_object_t *p_this )
104 decoder_t *p_dec = (decoder_t *)p_this;
105 decoder_sys_t *p_sys;
107 struct csri_stream_ext *p_stream_ext;
109 if( p_dec->fmt_in.i_codec != VLC_FOURCC('s','s','a',' ') )
112 p_render = csri_renderer_default();
115 msg_Err( p_dec, "can't load csri renderer" );
118 p_stream_ext = csri_query_ext(p_render, CSRI_EXT_STREAM_ASS);
121 msg_Err( p_dec, "csri renderer does not support ASS streaming" );
125 p_dec->pf_decode_sub = DecodeBlock;
127 p_dec->p_sys = p_sys = malloc( sizeof( decoder_sys_t ) );
130 memset( &p_sys->fmt_cached, 0, sizeof( p_sys->fmt_cached ) );
132 p_sys->p_stream_ext = p_stream_ext;
133 p_sys->pf_push_packet = p_stream_ext->push_packet;
134 p_sys->p_instance = p_stream_ext->init_stream( p_render,
135 p_dec->fmt_in.p_extra,
136 p_dec->fmt_in.p_extra ? strnlen( p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra ) : 0,
141 /*****************************************************************************
143 *****************************************************************************
145 *****************************************************************************/
146 static void Destroy( vlc_object_t *p_this )
148 decoder_t *p_dec = (decoder_t *)p_this;
149 decoder_sys_t *p_sys = p_dec->p_sys;
151 if( p_sys->p_stream_ext->discard )
152 p_sys->p_stream_ext->discard( p_sys->p_instance, true );
156 /****************************************************************************
157 * DecodeBlock: the whole thing
158 ****************************************************************************
159 * This function must be fed with complete subtitles units.
160 ****************************************************************************/
161 static subpicture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
163 decoder_sys_t *p_sys = p_dec->p_sys;
165 subpicture_t *p_spu = NULL;
168 //msg_Dbg( p_dec, "DecodeBlock %p", (void *)pp_block);
169 if( !pp_block || *pp_block == NULL )
175 if( p_block->i_buffer == 0 || p_block->p_buffer[0] == '\0' )
177 block_Release( p_block );
181 p_spu = p_dec->pf_spu_buffer_new( p_dec );
184 msg_Warn( p_dec, "can't get spu buffer" );
185 block_Release( p_block );
189 p_spu->p_sys = malloc( sizeof( subpicture_sys_t ));
192 p_dec->pf_spu_buffer_del( p_dec, p_spu );
193 block_Release( p_block );
196 p_spu->p_sys->p_dec = p_dec;
198 p_spu->p_sys->i_subs_len = p_block->i_buffer;
199 p_spu->p_sys->p_subs_data = malloc( p_block->i_buffer );
200 if( !p_spu->p_sys->p_subs_data )
202 free( p_spu->p_sys );
203 p_dec->pf_spu_buffer_del( p_dec, p_spu );
204 block_Release( p_block );
207 memcpy( p_spu->p_sys->p_subs_data, p_block->p_buffer,
212 p_spu->i_start = p_block->i_pts;
213 p_spu->i_stop = p_block->i_pts + p_block->i_length;
214 p_spu->b_ephemer = false;
215 p_spu->b_absolute = false;
216 p_spu->b_pausable = true;
218 //msg_Dbg( p_dec, "BS %lf..%lf", p_spu->i_start * 0.000001, p_spu->i_stop * 0.000001);
219 p_sys->pf_push_packet( p_sys->p_instance,
220 p_spu->p_sys->p_subs_data, p_spu->p_sys->i_subs_len,
221 p_spu->i_start * 0.000001,
222 p_spu->i_stop * 0.000001);
224 p_spu->pf_pre_render = PreRender;
225 p_spu->pf_update_regions = UpdateRegions;
226 p_spu->pf_destroy = DestroySubpicture;
228 block_Release( p_block );
233 static void DestroySubpicture( subpicture_t *p_subpic )
235 //msg_Dbg( p_subpic->p_sys->p_dec, "drop spu %p", (void *)p_subpic );
236 free( p_subpic->p_sys->p_subs_data );
237 free( p_subpic->p_sys );
240 static void PreRender( video_format_t *p_fmt, spu_t *p_spu,
241 subpicture_t *p_subpic, mtime_t ts )
243 decoder_t *p_dec = p_subpic->p_sys->p_dec;
244 p_dec->p_sys->p_spu_final = p_subpic;
247 static subpicture_region_t *UpdateRegions( video_format_t *p_fmt, spu_t *p_spu,
248 subpicture_t *p_subpic, mtime_t ts )
250 decoder_t *p_dec = p_subpic->p_sys->p_dec;
251 decoder_sys_t *p_sys = p_dec->p_sys;
253 subpicture_region_t *p_spu_region;
256 if( p_subpic != p_sys->p_spu_final )
260 msg_Warn( p_dec, "---- fmt: %dx%d %dx%d chroma=%4.4s",
261 p_fmt->i_width, p_fmt->i_height,
262 p_fmt->i_visible_width, p_fmt->i_visible_height,
263 (const char*)&p_fmt->i_chroma );
265 /* XXX On x86 at least our RGBA is mapped to their BGRA
266 * TODO confirm that is the same on big endian cpu */
268 fmt.i_chroma = VLC_FOURCC('R','G','B','A');
269 fmt.i_width = fmt.i_visible_width;
270 fmt.i_height = fmt.i_visible_height;
271 fmt.i_bits_per_pixel = 0;
272 fmt.i_x_offset = fmt.i_y_offset = 0;
276 if( memcmp(&fmt, &p_sys->fmt_cached, sizeof(fmt)) )
278 //msg_Warn( p_dec, "---- fmt: new %dx%d", fmt.i_width, fmt.i_height );
280 struct csri_fmt csri_fmt;
281 memset(&csri_fmt, 0, sizeof(csri_fmt));
282 csri_fmt.pixfmt = CSRI_F_BGRA;
283 csri_fmt.width = fmt.i_width;
284 csri_fmt.height = fmt.i_height;
285 if( csri_request_fmt( p_sys->p_instance, &csri_fmt ) )
286 msg_Dbg( p_dec, "csri error: format not supported" );
288 p_sys->fmt_cached = fmt;
291 p_subpic->i_original_picture_height = fmt.i_height;
292 p_subpic->i_original_picture_width = fmt.i_width;
294 p_spu_region = p_subpic->pf_create_region( VLC_OBJECT(p_dec), &fmt );
298 struct csri_frame csri_frame;
301 p_spu_region->i_align = SUBPICTURE_ALIGN_TOP | SUBPICTURE_ALIGN_LEFT;
302 memset( p_spu_region->picture.Y_PIXELS, 0x00, p_spu_region->picture.Y_PITCH * p_sys->fmt_cached.i_height );
305 //msg_Dbg( p_dec, "TS %lf", ts * 0.000001 );
306 memset( &csri_frame, 0, sizeof(csri_frame) );
307 csri_frame.pixfmt = CSRI_F_BGRA;
308 csri_frame.planes[0] = (unsigned char*)p_spu_region->picture.Y_PIXELS;
309 csri_frame.strides[0] = p_spu_region->picture.Y_PITCH;
310 csri_render( p_sys->p_instance, &csri_frame, ts * 0.000001 );