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_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 if( !p_access->psz_path || !*p_access->psz_path )
105 /* Only when selected */
106 if( !p_this->b_force ) return VLC_EGENERIC;
108 psz_name = var_CreateGetString( p_this, "cd-audio" );
109 if( !psz_name || !*psz_name )
111 if( psz_name ) free( psz_name );
115 else psz_name = strdup( p_access->psz_path );
118 if( (vcddev = ioctl_Open( VLC_OBJECT(p_access), psz_name )) == NULL )
120 msg_Warn( p_access, "could not open %s", psz_name );
126 /* Set up p_access */
127 p_access->pf_read = NULL;
128 p_access->pf_block = Block;
129 p_access->pf_control = Control;
130 p_access->pf_seek = Seek;
131 p_access->info.i_update = 0;
132 p_access->info.i_size = 0;
133 p_access->info.i_pos = 0;
134 p_access->info.b_eof = VLC_FALSE;
135 p_access->info.i_title = 0;
136 p_access->info.i_seekpoint = 0;
137 p_access->p_sys = p_sys = malloc( sizeof( access_sys_t ) );
138 memset( p_sys, 0, sizeof( access_sys_t ) );
139 p_sys->vcddev = vcddev;
140 p_sys->b_header = VLC_FALSE;
142 /* We read the Table Of Content information */
143 p_sys->i_titles = ioctl_GetTracksMap( VLC_OBJECT(p_access),
144 p_sys->vcddev, &p_sys->p_sectors );
145 if( p_sys->i_titles < 0 )
147 msg_Err( p_access, "unable to count tracks" );
150 else if( p_sys->i_titles <= 0 )
152 msg_Err( p_access, "no audio tracks found" );
156 /* Build title table */
157 for( i = 0; i < p_sys->i_titles; i++ )
159 input_title_t *t = p_sys->title[i] = vlc_input_title_New();
161 msg_Dbg( p_access, "title[%d] start=%d", i, p_sys->p_sectors[i] );
162 msg_Dbg( p_access, "title[%d] end=%d", i, p_sys->p_sectors[i+1] );
164 asprintf( &t->psz_name, _("Track %i"), i + 1 );
165 t->i_size = ( p_sys->p_sectors[i+1] - p_sys->p_sectors[i] ) *
166 (int64_t)CDDA_DATA_SIZE;
168 t->i_length = I64C(1000000) * t->i_size / 44100 / 4;
171 p_sys->i_sector = p_sys->p_sectors[0];
172 p_access->info.i_size = p_sys->title[0]->i_size;
174 /* Build a WAV header for the output data */
175 memset( &p_sys->waveheader, 0, sizeof(WAVEHEADER) );
176 SetWLE( &p_sys->waveheader.Format, 1 ); /*WAVE_FORMAT_PCM*/
177 SetWLE( &p_sys->waveheader.BitsPerSample, 16);
178 p_sys->waveheader.MainChunkID = VLC_FOURCC('R', 'I', 'F', 'F');
179 p_sys->waveheader.Length = 0; /* we just don't know */
180 p_sys->waveheader.ChunkTypeID = VLC_FOURCC('W', 'A', 'V', 'E');
181 p_sys->waveheader.SubChunkID = VLC_FOURCC('f', 'm', 't', ' ');
182 SetDWLE( &p_sys->waveheader.SubChunkLength, 16);
183 SetWLE( &p_sys->waveheader.Modus, 2);
184 SetDWLE( &p_sys->waveheader.SampleFreq, 44100);
185 SetWLE( &p_sys->waveheader.BytesPerSample,
186 2 /*Modus*/ * 16 /*BitsPerSample*/ / 8 );
187 SetDWLE( &p_sys->waveheader.BytesPerSec,
188 2*16/8 /*BytesPerSample*/ * 44100 /*SampleFreq*/ );
189 p_sys->waveheader.DataChunkID = VLC_FOURCC('d', 'a', 't', 'a');
190 p_sys->waveheader.DataLength = 0; /* we just don't know */
193 var_Create( p_access, "cdda-caching", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
197 ioctl_Close( VLC_OBJECT(p_access), p_sys->vcddev );
202 /*****************************************************************************
204 *****************************************************************************/
205 static void Close( vlc_object_t *p_this )
207 access_t *p_access = (access_t *)p_this;
208 access_sys_t *p_sys = p_access->p_sys;
211 for( i = 0; i < p_sys->i_titles; i++ )
213 vlc_input_title_Delete( p_sys->title[i] );
216 ioctl_Close( p_this, p_sys->vcddev );
220 /*****************************************************************************
221 * Block: read data (CDDA_DATA_ONCE)
222 *****************************************************************************/
223 static block_t *Block( access_t *p_access )
225 access_sys_t *p_sys = p_access->p_sys;
226 int i_blocks = CDDA_BLOCKS_ONCE;
229 /* Check end of file */
230 if( p_access->info.b_eof ) return NULL;
232 if( !p_sys->b_header )
234 /* Return only the header */
235 p_block = block_New( p_access, sizeof( WAVEHEADER ) );
236 memcpy( p_block->p_buffer, &p_sys->waveheader, sizeof(WAVEHEADER) );
237 p_sys->b_header = VLC_TRUE;
241 /* Check end of title */
242 while( p_sys->i_sector >= p_sys->p_sectors[p_access->info.i_title + 1] )
244 if( p_access->info.i_title + 1 >= p_sys->i_titles )
246 p_access->info.b_eof = VLC_TRUE;
250 p_access->info.i_update |= INPUT_UPDATE_TITLE | INPUT_UPDATE_SIZE;
251 p_access->info.i_title++;
252 p_access->info.i_size = p_sys->title[p_access->info.i_title]->i_size;
253 p_access->info.i_pos = 0;
256 /* Don't read after the end of a title */
257 if( p_sys->i_sector + i_blocks >=
258 p_sys->p_sectors[p_access->info.i_title + 1] )
260 i_blocks = p_sys->p_sectors[p_access->info.i_title + 1 ] -
264 /* Do the actual reading */
265 if( !( p_block = block_New( p_access, i_blocks * CDDA_DATA_SIZE ) ) )
267 msg_Err( p_access, "cannot get a new block of size: %i",
268 i_blocks * CDDA_DATA_SIZE );
272 if( ioctl_ReadSectors( VLC_OBJECT(p_access), p_sys->vcddev,
273 p_sys->i_sector, p_block->p_buffer, i_blocks, CDDA_TYPE ) < 0 )
275 msg_Err( p_access, "cannot read sector %i", p_sys->i_sector );
276 block_Release( p_block );
278 /* Try to skip one sector (in case of bad sectors) */
280 p_access->info.i_pos += CDDA_DATA_SIZE;
284 /* Update a few values */
285 p_sys->i_sector += i_blocks;
286 p_access->info.i_pos += p_block->i_buffer;
291 /****************************************************************************
293 ****************************************************************************/
294 static int Seek( access_t *p_access, int64_t i_pos )
296 access_sys_t *p_sys = p_access->p_sys;
298 /* Next sector to read */
299 p_sys->i_sector = p_sys->p_sectors[p_access->info.i_title] +
300 i_pos / CDDA_DATA_SIZE;
301 p_access->info.i_pos = i_pos;
306 /*****************************************************************************
308 *****************************************************************************/
309 static int Control( access_t *p_access, int i_query, va_list args )
311 access_sys_t *p_sys = p_access->p_sys;
315 input_title_t ***ppp_title;
321 case ACCESS_CAN_SEEK:
322 case ACCESS_CAN_FASTSEEK:
323 case ACCESS_CAN_PAUSE:
324 case ACCESS_CAN_CONTROL_PACE:
325 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
331 pi_int = (int*)va_arg( args, int * );
332 *pi_int = CDDA_DATA_ONCE;
335 case ACCESS_GET_PTS_DELAY:
336 pi_64 = (int64_t*)va_arg( args, int64_t * );
337 *pi_64 = var_GetInteger( p_access, "cdda-caching" ) * 1000;
341 case ACCESS_SET_PAUSE_STATE:
344 case ACCESS_GET_TITLE_INFO:
345 ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
346 pi_int = (int*)va_arg( args, int* );
347 *((int*)va_arg( args, int* )) = 1; /* Title offset */
349 /* Duplicate title infos */
350 *pi_int = p_sys->i_titles;
351 *ppp_title = malloc(sizeof( input_title_t **) * p_sys->i_titles );
352 for( i = 0; i < p_sys->i_titles; i++ )
354 (*ppp_title)[i] = vlc_input_title_Duplicate( p_sys->title[i] );
358 case ACCESS_SET_TITLE:
359 i = (int)va_arg( args, int );
360 if( i != p_access->info.i_title )
363 p_access->info.i_update |=
364 INPUT_UPDATE_TITLE|INPUT_UPDATE_SIZE;
365 p_access->info.i_title = i;
366 p_access->info.i_size = p_sys->title[i]->i_size;
367 p_access->info.i_pos = 0;
369 /* Next sector to read */
370 p_sys->i_sector = p_sys->p_sectors[i];
374 case ACCESS_SET_SEEKPOINT:
375 case ACCESS_SET_PRIVATE_ID_STATE:
379 msg_Warn( p_access, "unimplemented query in control" );