1 /*****************************************************************************
2 * cdda.c : CD digital audio input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2003 VideoLAN
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_description( _("Audio CD input") );
49 set_capability( "access2", 10 );
50 set_callbacks( Open, Close );
52 add_usage_hint( N_("[cdda:][device][@[track]]") );
53 add_integer( "cdda-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT,
54 CACHING_LONGTEXT, VLC_TRUE );
55 add_shortcut( "cdda" );
56 add_shortcut( "cddasimple" );
60 /* how many blocks VCDRead will read in each loop */
61 #define CDDA_BLOCKS_ONCE 20
62 #define CDDA_DATA_ONCE (CDDA_BLOCKS_ONCE * CDDA_DATA_SIZE)
64 /*****************************************************************************
65 * Access: local prototypes
66 *****************************************************************************/
69 vcddev_t *vcddev; /* vcd device descriptor */
73 input_title_t *title[99]; /* No more that 99 track in a cd-audio */
75 /* Current position */
76 int i_sector; /* Current Sector */
77 int * p_sectors; /* Track sectors */
79 /* Wave header for the output data */
80 WAVEHEADER waveheader;
84 static block_t *Block( access_t * );
85 static int Seek( access_t *, int64_t );
86 static int Control( access_t *, int, va_list );
88 /*****************************************************************************
90 *****************************************************************************/
91 static int Open( vlc_object_t *p_this )
93 access_t *p_access = (access_t*)p_this;
100 if( !p_access->psz_path || !*p_access->psz_path )
102 /* Only when selected */
103 if( !p_this->b_force ) return VLC_EGENERIC;
105 psz_name = var_CreateGetString( p_this, "cd-audio" );
106 if( !psz_name || !*psz_name )
108 if( psz_name ) free( psz_name );
112 else psz_name = strdup( p_access->psz_path );
115 if( (vcddev = ioctl_Open( VLC_OBJECT(p_access), psz_name )) == NULL )
117 msg_Warn( p_access, "could not open %s", psz_name );
123 /* Set up p_access */
124 p_access->pf_read = NULL;
125 p_access->pf_block = Block;
126 p_access->pf_control = Control;
127 p_access->pf_seek = Seek;
128 p_access->info.i_update = 0;
129 p_access->info.i_size = 0;
130 p_access->info.i_pos = 0;
131 p_access->info.b_eof = VLC_FALSE;
132 p_access->info.i_title = 0;
133 p_access->info.i_seekpoint = 0;
134 p_access->p_sys = p_sys = malloc( sizeof( access_sys_t ) );
135 memset( p_sys, 0, sizeof( access_sys_t ) );
136 p_sys->vcddev = vcddev;
137 p_sys->b_header = VLC_FALSE;
139 /* We read the Table Of Content information */
140 p_sys->i_titles = ioctl_GetTracksMap( VLC_OBJECT(p_access),
141 p_sys->vcddev, &p_sys->p_sectors );
142 if( p_sys->i_titles < 0 )
144 msg_Err( p_access, "unable to count tracks" );
147 else if( p_sys->i_titles <= 0 )
149 msg_Err( p_access, "no audio tracks found" );
153 /* Build title table */
154 for( i = 0; i < p_sys->i_titles; i++ )
156 input_title_t *t = p_sys->title[i] = vlc_input_title_New();
158 msg_Dbg( p_access, "title[%d] start=%d", i, p_sys->p_sectors[i] );
159 msg_Dbg( p_access, "title[%d] end=%d", i, p_sys->p_sectors[i+1] );
161 asprintf( &t->psz_name, _("Track %i"), i + 1 );
162 t->i_size = ( p_sys->p_sectors[i+1] - p_sys->p_sectors[i] ) *
163 (int64_t)CDDA_DATA_SIZE;
165 t->i_length = I64C(1000000) * t->i_size / 44100 / 4;
168 p_sys->i_sector = p_sys->p_sectors[0];
169 p_access->info.i_size = p_sys->title[0]->i_size;
171 /* Build a WAV header for the output data */
172 memset( &p_sys->waveheader, 0, sizeof(WAVEHEADER) );
173 SetWLE( &p_sys->waveheader.Format, 1 ); /*WAVE_FORMAT_PCM*/
174 SetWLE( &p_sys->waveheader.BitsPerSample, 16);
175 p_sys->waveheader.MainChunkID = VLC_FOURCC('R', 'I', 'F', 'F');
176 p_sys->waveheader.Length = 0; /* we just don't know */
177 p_sys->waveheader.ChunkTypeID = VLC_FOURCC('W', 'A', 'V', 'E');
178 p_sys->waveheader.SubChunkID = VLC_FOURCC('f', 'm', 't', ' ');
179 SetDWLE( &p_sys->waveheader.SubChunkLength, 16);
180 SetWLE( &p_sys->waveheader.Modus, 2);
181 SetDWLE( &p_sys->waveheader.SampleFreq, 44100);
182 SetWLE( &p_sys->waveheader.BytesPerSample,
183 2 /*Modus*/ * 16 /*BitsPerSample*/ / 8 );
184 SetDWLE( &p_sys->waveheader.BytesPerSec,
185 2*16/8 /*BytesPerSample*/ * 44100 /*SampleFreq*/ );
186 p_sys->waveheader.DataChunkID = VLC_FOURCC('d', 'a', 't', 'a');
187 p_sys->waveheader.DataLength = 0; /* we just don't know */
190 var_Create( p_access, "cdda-caching", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
194 ioctl_Close( VLC_OBJECT(p_access), p_sys->vcddev );
199 /*****************************************************************************
201 *****************************************************************************/
202 static void Close( vlc_object_t *p_this )
204 access_t *p_access = (access_t *)p_this;
205 access_sys_t *p_sys = p_access->p_sys;
208 for( i = 0; i < p_sys->i_titles; i++ )
210 vlc_input_title_Delete( p_sys->title[i] );
213 ioctl_Close( p_this, p_sys->vcddev );
217 /*****************************************************************************
218 * Block: read data (CDDA_DATA_ONCE)
219 *****************************************************************************/
220 static block_t *Block( access_t *p_access )
222 access_sys_t *p_sys = p_access->p_sys;
223 int i_blocks = CDDA_BLOCKS_ONCE;
226 /* Check end of file */
227 if( p_access->info.b_eof ) return NULL;
229 if( !p_sys->b_header )
231 /* Return only the header */
232 p_block = block_New( p_access, sizeof( WAVEHEADER ) );
233 memcpy( p_block->p_buffer, &p_sys->waveheader, sizeof(WAVEHEADER) );
234 p_sys->b_header = VLC_TRUE;
238 /* Check end of title */
239 while( p_sys->i_sector >= p_sys->p_sectors[p_access->info.i_title + 1] )
241 if( p_access->info.i_title + 1 >= p_sys->i_titles )
243 p_access->info.b_eof = VLC_TRUE;
247 p_access->info.i_update |= INPUT_UPDATE_TITLE | INPUT_UPDATE_SIZE;
248 p_access->info.i_title++;
249 p_access->info.i_size = p_sys->title[p_access->info.i_title]->i_size;
250 p_access->info.i_pos = 0;
253 /* Don't read after the end of a title */
254 if( p_sys->i_sector + i_blocks >=
255 p_sys->p_sectors[p_access->info.i_title + 1] )
257 i_blocks = p_sys->p_sectors[p_access->info.i_title + 1 ] -
261 /* Do the actual reading */
262 if( !( p_block = block_New( p_access, i_blocks * CDDA_DATA_SIZE ) ) )
264 msg_Err( p_access, "cannot get a new block of size: %i",
265 i_blocks * CDDA_DATA_SIZE );
269 if( ioctl_ReadSectors( VLC_OBJECT(p_access), p_sys->vcddev,
270 p_sys->i_sector, p_block->p_buffer, i_blocks, CDDA_TYPE ) < 0 )
272 msg_Err( p_access, "cannot read sector %i", p_sys->i_sector );
273 block_Release( p_block );
275 /* Try to skip one sector (in case of bad sectors) */
277 p_access->info.i_pos += CDDA_DATA_SIZE;
281 /* Update a few values */
282 p_sys->i_sector += i_blocks;
283 p_access->info.i_pos += p_block->i_buffer;
288 /****************************************************************************
290 ****************************************************************************/
291 static int Seek( access_t *p_access, int64_t i_pos )
293 access_sys_t *p_sys = p_access->p_sys;
295 /* Next sector to read */
296 p_sys->i_sector = p_sys->p_sectors[p_access->info.i_title] +
297 i_pos / CDDA_DATA_SIZE;
298 p_access->info.i_pos = i_pos;
303 /*****************************************************************************
305 *****************************************************************************/
306 static int Control( access_t *p_access, int i_query, va_list args )
308 access_sys_t *p_sys = p_access->p_sys;
312 input_title_t ***ppp_title;
318 case ACCESS_CAN_SEEK:
319 case ACCESS_CAN_FASTSEEK:
320 case ACCESS_CAN_PAUSE:
321 case ACCESS_CAN_CONTROL_PACE:
322 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
328 pi_int = (int*)va_arg( args, int * );
329 *pi_int = CDDA_DATA_ONCE;
332 case ACCESS_GET_PTS_DELAY:
333 pi_64 = (int64_t*)va_arg( args, int64_t * );
334 *pi_64 = var_GetInteger( p_access, "cdda-caching" ) * 1000;
338 case ACCESS_SET_PAUSE_STATE:
341 case ACCESS_GET_TITLE_INFO:
342 ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
343 pi_int = (int*)va_arg( args, int* );
344 *((int*)va_arg( args, int* )) = 1; /* Title offset */
346 /* Duplicate title infos */
347 *pi_int = p_sys->i_titles;
348 *ppp_title = malloc(sizeof( input_title_t **) * p_sys->i_titles );
349 for( i = 0; i < p_sys->i_titles; i++ )
351 (*ppp_title)[i] = vlc_input_title_Duplicate( p_sys->title[i] );
355 case ACCESS_SET_TITLE:
356 i = (int)va_arg( args, int );
357 if( i != p_access->info.i_title )
360 p_access->info.i_update |=
361 INPUT_UPDATE_TITLE|INPUT_UPDATE_SIZE;
362 p_access->info.i_title = i;
363 p_access->info.i_size = p_sys->title[i]->i_size;
364 p_access->info.i_pos = 0;
366 /* Next sector to read */
367 p_sys->i_sector = p_sys->p_sectors[i];
371 case ACCESS_SET_SEEKPOINT:
372 case ACCESS_SET_PRIVATE_ID_STATE:
376 msg_Warn( p_access, "unimplemented query in control" );