1 /*****************************************************************************
2 * access.c: access capabilities for dvdplay plugin.
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
5 * $Id: access.c,v 1.1 2002/08/04 17:23:42 sam Exp $
7 * Author: Stéphane Borel <stef@via.ecp.fr>
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
31 #include <vlc/input.h>
38 #include <sys/types.h>
42 #ifdef STRNCASECMP_IN_STRINGS_H
47 # include <io.h> /* read() */
49 # include <sys/uio.h> /* struct iovec */
53 # include "input_iovec.h"
61 /*****************************************************************************
63 *****************************************************************************/
64 /* called from outside */
65 static int dvdplay_SetArea ( input_thread_t *, input_area_t * );
66 static int dvdplay_SetProgram ( input_thread_t *, pgrm_descriptor_t * );
67 static int dvdplay_Read ( input_thread_t *, byte_t *, size_t );
68 static void dvdplay_Seek ( input_thread_t *, off_t );
70 static void pf_vmg_callback ( void*, dvdplay_event_t );
72 /* only from inside */
73 static int dvdNewArea( input_thread_t *, input_area_t * );
74 static int dvdNewPGC ( input_thread_t * );
76 /*****************************************************************************
77 * OpenDVD: open libdvdplay
78 *****************************************************************************/
79 int E_(OpenDVD) ( vlc_object_t *p_this )
81 input_thread_t * p_input = (input_thread_t *)p_this;
84 input_area_t * p_area;
91 p_dvd = malloc( sizeof(dvd_data_t) );
94 msg_Err( p_input, "dvdplay error: out of memory" );
98 p_input->p_access_data = (void *)p_dvd;
100 p_input->pf_read = dvdplay_Read;
101 p_input->pf_seek = dvdplay_Seek;
102 p_input->pf_set_area = dvdplay_SetArea;
103 p_input->pf_set_program = dvdplay_SetProgram;
106 if( ( psz_source = dvdplay_ParseCL( p_input,
107 &i_title, &i_chapter, &i_angle ) ) == NULL )
113 /* Open libdvdplay */
114 p_dvd->vmg = dvdplay_open( psz_source, pf_vmg_callback, (void*)p_input );
116 /* free allocated strings */
119 if( p_dvd->vmg == NULL )
121 msg_Err( p_input, "dvdplay error: can't open source" );
126 p_dvd->p_intf = NULL;
128 p_dvd->i_still_time = 0;
133 /* Set stream and area data */
134 vlc_mutex_lock( &p_input->stream.stream_lock );
136 /* If we are here we can control the pace... */
137 p_input->stream.b_pace_control = 1;
138 /* seek is only allowed when we have size info */
139 p_input->stream.b_seekable = 0;
141 /* Initialize ES structures */
142 input_InitStream( p_input, sizeof( stream_ps_data_t ) );
144 /* disc input method */
145 p_input->stream.i_method = INPUT_METHOD_DVD;
147 i_title_nr = dvdplay_title_nr( p_dvd->vmg );
148 #define area p_input->stream.pp_areas
150 /* Area 0 for menu */
151 area[0]->i_plugin_data = 0;
153 for( i = 1 ; i <= i_title_nr ; i++ )
155 input_AddArea( p_input );
160 /* Number of chapters */
161 area[i]->i_part_nb = dvdplay_chapter_nr( p_dvd->vmg, i );
163 area[i]->i_plugin_data = 0;
166 msg_Dbg( p_input, "number of titles: %d", i_title_nr );
168 i_title = i_title <= i_title_nr ? i_title : 0;
170 p_area = p_input->stream.pp_areas[i_title];
171 p_area->i_part = i_chapter;
172 p_input->stream.p_selected_area = NULL;
174 /* set title, chapter, audio and subpic */
175 if( dvdplay_SetArea( p_input, p_area ) )
177 vlc_mutex_unlock( &p_input->stream.stream_lock );
181 if( i_angle <= p_input->stream.i_pgrm_number )
183 dvdplay_SetProgram( p_input,
184 p_input->stream.pp_programs[i_angle - 1] );
187 vlc_mutex_unlock( &p_input->stream.stream_lock );
189 p_input->psz_demux = "dvdplay";
194 /*****************************************************************************
195 * CloseDVD: close libdvdplay
196 *****************************************************************************/
197 void E_(CloseDVD) ( vlc_object_t *p_this )
199 input_thread_t * p_input = (input_thread_t *)p_this;
200 dvd_data_t * p_dvd = (dvd_data_t *)p_input->p_access_data;
202 /* close libdvdplay */
203 dvdplay_close( p_dvd->vmg );
206 p_input->p_access_data = NULL;
210 /*****************************************************************************
211 * dvdplay_SetProgram: set dvd angle.
212 *****************************************************************************
213 * This is actually a hack to make angle change through vlc interface with
214 * no need for a specific button.
215 *****************************************************************************/
216 static int dvdplay_SetProgram( input_thread_t * p_input,
217 pgrm_descriptor_t * p_program )
219 if( p_input->stream.p_selected_program != p_program )
224 p_dvd = (dvd_data_t*)(p_input->p_access_data);
225 i_angle = p_program->i_number;
227 if( !dvdplay_angle( p_dvd->vmg, i_angle ) )
229 memcpy( p_program, p_input->stream.p_selected_program,
230 sizeof(pgrm_descriptor_t) );
231 p_program->i_number = i_angle;
232 p_input->stream.p_selected_program = p_program;
234 msg_Dbg( p_input, "angle %d selected", i_angle );
241 /*****************************************************************************
242 * dvdplay_SetArea: initialize input data for title x, chapter y.
243 * It should be called for each user navigation request.
244 *****************************************************************************
245 * Take care that i_title starts from 0 (vmg) and i_chapter start from 1.
246 * Note that you have to take the lock before entering here.
247 *****************************************************************************/
248 static int dvdplay_SetArea( input_thread_t * p_input, input_area_t * p_area )
252 p_dvd = (dvd_data_t*)p_input->p_access_data;
257 if( p_area != p_input->stream.p_selected_area )
261 /* prevent intf to try to seek */
262 p_input->stream.b_seekable = 0;
264 /* Store selected chapter */
265 i_chapter = p_area->i_part;
267 dvdNewArea( p_input, p_area );
269 dvdplay_start( p_dvd->vmg, p_area->i_id );
271 p_area->i_part = i_chapter;
275 p_area = p_input->stream.p_selected_area;
282 if( p_area->i_part != dvdplay_chapter_cur( p_dvd->vmg ) )
284 if( ( p_area->i_part > 0 ) &&
285 ( p_area->i_part <= p_area->i_part_nb ))
287 dvdplay_pg( p_dvd->vmg, p_area->i_part );
289 p_area->i_part = dvdplay_chapter_cur( p_dvd->vmg );
292 /* warn interface that something has changed */
294 LB2OFF( dvdplay_position( p_dvd->vmg ) ) - p_area->i_start;
295 p_input->stream.b_changed = 1;
300 /*****************************************************************************
301 * dvdplay_Read: reads data packets.
302 *****************************************************************************
303 * Returns -1 in case of error, the number of bytes read if everything went
305 *****************************************************************************/
306 static int dvdplay_Read( input_thread_t * p_input,
307 byte_t * p_buffer, size_t i_count )
312 p_dvd = (dvd_data_t *)p_input->p_access_data;
314 vlc_mutex_lock( &p_input->stream.stream_lock );
316 i_read = LB2OFF( dvdplay_read( p_dvd->vmg, p_buffer, OFF2LB( i_count ) ) );
318 p_input->stream.p_selected_area->i_tell =
319 LB2OFF( dvdplay_position( p_dvd->vmg ) ) -
320 p_input->stream.p_selected_area->i_start;
322 vlc_mutex_unlock( &p_input->stream.stream_lock );
327 /*****************************************************************************
328 * dvdplay_Seek : Goes to a given position on the stream.
329 *****************************************************************************
330 * This one is used by the input and translate chronological position from
331 * input to logical position on the device.
332 * The lock should be taken before calling this function.
333 *****************************************************************************/
334 static void dvdplay_Seek( input_thread_t * p_input, off_t i_off )
338 p_dvd = (dvd_data_t *)p_input->p_access_data;
340 vlc_mutex_lock( &p_input->stream.stream_lock );
342 dvdplay_seek( p_dvd->vmg, OFF2LB( i_off ) );
344 vlc_mutex_unlock( &p_input->stream.stream_lock );
350 /*****************************************************************************
351 * pf_vmg_callback: called by libdvdplay when some event happens
352 *****************************************************************************
353 * The stream lock has to be taken before entering here
354 *****************************************************************************/
355 static void pf_vmg_callback( void* p_args, dvdplay_event_t event )
357 input_thread_t * p_input;
361 p_input = (input_thread_t*)p_args;
362 p_dvd = (dvd_data_t*)p_input->p_access_data;
374 /* prevent intf to try to seek by default */
375 p_input->stream.b_seekable = 0;
377 if( ( i = dvdplay_title_cur( p_dvd->vmg ) ) !=
378 p_input->stream.p_selected_area->i_id )
380 /* the title number has changed: update area */
381 msg_Warn( p_input, "new title %d (%d)", i,
382 p_input->stream.p_selected_area->i_id );
384 p_input->stream.pp_areas[i] );
387 /* new pgc in same title: reinit ES */
388 dvdNewPGC( p_input );
390 p_input->stream.b_changed = 1;
394 /* update current chapter */
395 p_input->stream.p_selected_area->i_part =
396 dvdplay_chapter_cur( p_dvd->vmg );
399 p_dvd->b_end_of_cell = 0;
402 p_dvd->b_end_of_cell = 1;
405 dvdplay_ES( p_input );
408 /* we must pause only from demux
409 * when the data in cache has been decoded */
410 p_dvd->i_still_time = dvdplay_still_time( p_dvd->vmg );
411 msg_Dbg( p_input, "still time %d", p_dvd->i_still_time );
419 msg_Err( p_input, "unknown event from libdvdplay (%d)",
426 static int dvdNewArea( input_thread_t * p_input, input_area_t * p_area )
429 int i_angle_nb, i_angle;
432 p_dvd = (dvd_data_t*)p_input->p_access_data;
434 p_input->stream.p_selected_area = p_area;
437 * One program for each angle
439 while( p_input->stream.i_pgrm_number )
441 input_DelProgram( p_input, p_input->stream.pp_programs[0] );
444 input_AddProgram( p_input, 1, sizeof( stream_ps_data_t ) );
445 p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
447 dvdplay_angle_info( p_dvd->vmg, &i_angle_nb, &i_angle );
448 for( i = 1 ; i < i_angle_nb ; i++ )
450 input_AddProgram( p_input, i+1, 0 );
453 dvdplay_SetProgram( p_input,
454 p_input->stream.pp_programs[i_angle-1] );
456 // dvdNewPGC( p_input );
458 /* No PSM to read in DVD mode, we already have all information */
459 p_input->stream.p_selected_program->b_is_ok = 1;
464 static int dvdNewPGC( input_thread_t * p_input )
467 // int i_audio_nr = -1;
469 // int i_subp_nr = -1;
473 p_dvd = (dvd_data_t*)p_input->p_access_data;
475 // dvdplay_audio_info( p_dvd->vmg, &i_audio_nr, &i_audio );
476 // dvdplay_subp_info( p_dvd->vmg, &i_subp_nr, &i_subp );
478 dvdplay_ES( p_input );
479 p_input->stream.p_selected_area->i_start =
480 LB2OFF( dvdplay_title_first( p_dvd->vmg ) );
481 p_input->stream.p_selected_area->i_size =
482 LB2OFF( dvdplay_title_end ( p_dvd->vmg ) ) -
483 p_input->stream.p_selected_area->i_start;
485 if( p_input->stream.p_selected_area->i_size > 0 )
487 p_input->stream.b_seekable = 1;
491 p_input->stream.b_seekable = 0;
495 i_sec = dvdplay_title_time( p_dvd->vmg );
496 msg_Dbg( p_input, "title time: %d:%02d:%02d (%d)",
497 i_sec/3600, (i_sec%3600)/60, i_sec%60, i_sec );