1 /*****************************************************************************
2 * cdda.c : CD digital audio input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2003 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Gildas Bazin <gbazin@netcourrier.com>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
31 #include <vlc/input.h>
34 #include "vcd/cdrom.h"
36 /*****************************************************************************
38 *****************************************************************************/
39 static int Open ( vlc_object_t * );
40 static void Close( vlc_object_t * );
42 #define CACHING_TEXT N_("Caching value in ms")
43 #define CACHING_LONGTEXT N_( \
44 "Allows you to modify the default caching value for cdda streams. This " \
45 "value should be set in milliseconds units." )
48 set_shortname( _("Audio CD"));
49 set_description( _("Audio CD input") );
50 set_capability( "access2", 10 );
51 set_category( CAT_INPUT );
52 set_subcategory( SUBCAT_INPUT_ACCESS );
53 set_callbacks( Open, Close );
55 add_usage_hint( N_("[cdda:][device][@[track]]") );
56 add_integer( "cdda-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT,
57 CACHING_LONGTEXT, VLC_TRUE );
58 add_shortcut( "cdda" );
59 add_shortcut( "cddasimple" );
63 /* how many blocks VCDRead will read in each loop */
64 #define CDDA_BLOCKS_ONCE 20
65 #define CDDA_DATA_ONCE (CDDA_BLOCKS_ONCE * CDDA_DATA_SIZE)
67 /*****************************************************************************
68 * Access: local prototypes
69 *****************************************************************************/
72 vcddev_t *vcddev; /* vcd device descriptor */
76 input_title_t *title[99]; /* No more that 99 track in a cd-audio */
78 /* Current position */
79 int i_sector; /* Current Sector */
80 int * p_sectors; /* Track sectors */
82 /* Wave header for the output data */
83 WAVEHEADER waveheader;
87 static block_t *Block( access_t * );
88 static int Seek( access_t *, int64_t );
89 static int Control( access_t *, int, va_list );
91 /*****************************************************************************
93 *****************************************************************************/
94 static int Open( vlc_object_t *p_this )
96 access_t *p_access = (access_t*)p_this;
103 vlc_bool_t b_separate_requested;
105 input_thread_t *p_input;
107 if( !p_access->psz_path || !*p_access->psz_path )
109 /* Only when selected */
110 if( !p_this->b_force ) return VLC_EGENERIC;
112 psz_name = var_CreateGetString( p_this, "cd-audio" );
113 if( !psz_name || !*psz_name )
115 if( psz_name ) free( psz_name );
119 else psz_name = strdup( p_access->psz_path );
122 if( (vcddev = ioctl_Open( VLC_OBJECT(p_access), psz_name )) == NULL )
124 msg_Warn( p_access, "could not open %s", psz_name );
130 /* Set up p_access */
131 p_access->pf_read = NULL;
132 p_access->pf_block = Block;
133 p_access->pf_control = Control;
134 p_access->pf_seek = Seek;
135 p_access->info.i_update = 0;
136 p_access->info.i_size = 0;
137 p_access->info.i_pos = 0;
138 p_access->info.b_eof = VLC_FALSE;
139 p_access->info.i_title = 0;
140 p_access->info.i_seekpoint = 0;
141 p_access->p_sys = p_sys = malloc( sizeof( access_sys_t ) );
142 memset( p_sys, 0, sizeof( access_sys_t ) );
143 p_sys->vcddev = vcddev;
144 p_sys->b_header = VLC_FALSE;
146 b_separate_requested = var_CreateGetBool( p_access, "cdda-separate-tracks" );
148 /* We only do separate items if the whole disc is requested - Dirty hack we access
149 * some private data ! */
150 p_input = (input_thread_t *)( p_access->p_parent );
151 if( b_separate_requested && p_input->input.i_title_start == -1 )
153 p_sys->b_separate_items = VLC_TRUE;
156 if( p_sys->b_separate_items )
158 /* Let's check if we need to play */
161 /* We read the Table Of Content information */
162 i_ret = GetTracks( p_access, p_sys->b_separate_items );
168 p_access->info.i_size = p_sys->title[0]->i_size;
170 /* Build a WAV header for the output data */
171 memset( &p_sys->waveheader, 0, sizeof(WAVEHEADER) );
172 SetWLE( &p_sys->waveheader.Format, 1 ); /*WAVE_FORMAT_PCM*/
173 SetWLE( &p_sys->waveheader.BitsPerSample, 16);
174 p_sys->waveheader.MainChunkID = VLC_FOURCC('R', 'I', 'F', 'F');
175 p_sys->waveheader.Length = 0; /* we just don't know */
176 p_sys->waveheader.ChunkTypeID = VLC_FOURCC('W', 'A', 'V', 'E');
177 p_sys->waveheader.SubChunkID = VLC_FOURCC('f', 'm', 't', ' ');
178 SetDWLE( &p_sys->waveheader.SubChunkLength, 16);
179 SetWLE( &p_sys->waveheader.Modus, 2);
180 SetDWLE( &p_sys->waveheader.SampleFreq, 44100);
181 SetWLE( &p_sys->waveheader.BytesPerSample,
182 2 /*Modus*/ * 16 /*BitsPerSample*/ / 8 );
183 SetDWLE( &p_sys->waveheader.BytesPerSec,
184 2*16/8 /*BytesPerSample*/ * 44100 /*SampleFreq*/ );
185 p_sys->waveheader.DataChunkID = VLC_FOURCC('d', 'a', 't', 'a');
186 p_sys->waveheader.DataLength = 0; /* we just don't know */
188 p_access->info.i_update |= INPUT_UPDATE_META;
191 var_Create( p_access, "cdda-caching", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
195 ioctl_Close( VLC_OBJECT(p_access), p_sys->vcddev );
200 /*****************************************************************************
202 *****************************************************************************/
203 static void Close( vlc_object_t *p_this )
205 access_t *p_access = (access_t *)p_this;
206 access_sys_t *p_sys = p_access->p_sys;
209 for( i = 0; i < p_sys->i_titles; i++ )
211 vlc_input_title_Delete( p_sys->title[i] );
214 ioctl_Close( p_this, p_sys->vcddev );
218 /*****************************************************************************
219 * Block: read data (CDDA_DATA_ONCE)
220 *****************************************************************************/
221 static block_t *Block( access_t *p_access )
223 access_sys_t *p_sys = p_access->p_sys;
224 int i_blocks = CDDA_BLOCKS_ONCE;
227 /* Check end of file */
228 if( p_access->info.b_eof ) return NULL;
230 if( !p_sys->b_header )
232 /* Return only the header */
233 p_block = block_New( p_access, sizeof( WAVEHEADER ) );
234 memcpy( p_block->p_buffer, &p_sys->waveheader, sizeof(WAVEHEADER) );
235 p_sys->b_header = VLC_TRUE;
239 /* Check end of title */
240 while( p_sys->i_sector >= p_sys->p_sectors[p_access->info.i_title + 1] )
242 if( p_access->info.i_title + 1 >= p_sys->i_titles )
244 p_access->info.b_eof = VLC_TRUE;
248 p_access->info.i_update |= INPUT_UPDATE_TITLE | INPUT_UPDATE_SIZE |
250 p_access->info.i_title++;
251 p_access->info.i_size = p_sys->title[p_access->info.i_title]->i_size;
252 p_access->info.i_pos = 0;
255 /* Don't read after the end of a title */
256 if( p_sys->i_sector + i_blocks >=
257 p_sys->p_sectors[p_access->info.i_title + 1] )
259 i_blocks = p_sys->p_sectors[p_access->info.i_title + 1 ] -
263 /* Do the actual reading */
264 if( !( p_block = block_New( p_access, i_blocks * CDDA_DATA_SIZE ) ) )
266 msg_Err( p_access, "cannot get a new block of size: %i",
267 i_blocks * CDDA_DATA_SIZE );
271 if( ioctl_ReadSectors( VLC_OBJECT(p_access), p_sys->vcddev,
272 p_sys->i_sector, p_block->p_buffer, i_blocks, CDDA_TYPE ) < 0 )
274 msg_Err( p_access, "cannot read sector %i", p_sys->i_sector );
275 block_Release( p_block );
277 /* Try to skip one sector (in case of bad sectors) */
279 p_access->info.i_pos += CDDA_DATA_SIZE;
283 /* Update a few values */
284 p_sys->i_sector += i_blocks;
285 p_access->info.i_pos += p_block->i_buffer;
290 /****************************************************************************
292 ****************************************************************************/
293 static int Seek( access_t *p_access, int64_t i_pos )
295 access_sys_t *p_sys = p_access->p_sys;
297 /* Next sector to read */
298 p_sys->i_sector = p_sys->p_sectors[p_access->info.i_title] +
299 i_pos / CDDA_DATA_SIZE;
300 p_access->info.i_pos = i_pos;
305 /*****************************************************************************
307 *****************************************************************************/
308 static int Control( access_t *p_access, int i_query, va_list args )
310 access_sys_t *p_sys = p_access->p_sys;
314 input_title_t ***ppp_title;
317 vlc_meta_t **pp_meta;
322 case ACCESS_CAN_SEEK:
323 case ACCESS_CAN_FASTSEEK:
324 case ACCESS_CAN_PAUSE:
325 case ACCESS_CAN_CONTROL_PACE:
326 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
332 pi_int = (int*)va_arg( args, int * );
333 *pi_int = CDDA_DATA_ONCE;
336 case ACCESS_GET_PTS_DELAY:
337 pi_64 = (int64_t*)va_arg( args, int64_t * );
338 *pi_64 = var_GetInteger( p_access, "cdda-caching" ) * 1000;
342 case ACCESS_SET_PAUSE_STATE:
345 case ACCESS_GET_TITLE_INFO:
346 ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
347 pi_int = (int*)va_arg( args, int* );
348 *((int*)va_arg( args, int* )) = 1; /* Title offset */
350 /* Duplicate title infos */
351 *pi_int = p_sys->i_titles;
352 *ppp_title = malloc(sizeof( input_title_t **) * p_sys->i_titles );
353 for( i = 0; i < p_sys->i_titles; i++ )
355 (*ppp_title)[i] = vlc_input_title_Duplicate( p_sys->title[i] );
359 case ACCESS_SET_TITLE:
360 i = (int)va_arg( args, int );
361 if( i != p_access->info.i_title )
364 p_access->info.i_update |=
365 INPUT_UPDATE_TITLE|INPUT_UPDATE_SIZE|INPUT_UPDATE_META;
366 p_access->info.i_title = i;
367 p_access->info.i_size = p_sys->title[i]->i_size;
368 p_access->info.i_pos = 0;
370 /* Next sector to read */
371 p_sys->i_sector = p_sys->p_sectors[i];
375 case ACCESS_GET_META:
376 psz_title = malloc( strlen( _("Audio CD - Track ") ) + 5 );
377 snprintf( psz_title, 100, _("Audio CD - Track %i" ),
378 p_access->info.i_title+1 );
379 pp_meta = (vlc_meta_t**)va_arg( args, vlc_meta_t** );
380 *pp_meta = vlc_meta_New();
381 vlc_meta_Add( *pp_meta, VLC_META_TITLE, psz_title );
385 case ACCESS_SET_SEEKPOINT:
386 case ACCESS_SET_PRIVATE_ID_STATE:
390 msg_Warn( p_access, "unimplemented query in control" );
400 static int GetTracks( access_t *p_access, vlc_bool_t b_separate )
402 p_sys->i_titles = ioctl_GetTracksMap( VLC_OBJECT(p_access),
403 p_sys->vcddev, &p_sys->p_sectors );
404 if( p_sys->i_titles < 0 )
406 msg_Err( p_access, "unable to count tracks" );
407 return VLC_EGENERIC;;
409 else if( p_sys->i_titles <= 0 )
411 msg_Err( p_access, "no audio tracks found" );
415 /* Build title table */
416 for( i = 0; i < p_sys->i_titles; i++ )
420 input_title_t *t = p_sys->title[i] = vlc_input_title_New();
422 msg_Dbg( p_access, "title[%d] start=%d", i, p_sys->p_sectors[i] );
423 msg_Dbg( p_access, "title[%d] end=%d", i, p_sys->p_sectors[i+1] );
425 asprintf( &t->psz_name, _("Track %i"), i + 1 );
426 t->i_size = ( p_sys->p_sectors[i+1] - p_sys->p_sectors[i] ) *
427 (int64_t)CDDA_DATA_SIZE;
429 t->i_length = I64C(1000000) * t->i_size / 44100 / 4;
433 /* Create playlist items */
437 p_sys->i_sector = p_sys->p_sectors[0];