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 */
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;
96 char *psz_dup = strdup( p_access->psz_path );
102 /* Command line: cdda://[dev_path][@title] */
103 if( ( psz = strchr( psz_dup, '@' ) ) )
107 i_title = strtol( psz, NULL, 0 );
110 if( *psz_dup == '\0' )
114 /* Only when selected */
115 if( *p_access->psz_access == '\0' )
119 psz_dup = var_CreateGetString( p_access, "cd-audio" );
120 if( *psz_dup == '\0' )
128 if( (vcddev = ioctl_Open( VLC_OBJECT(p_access), psz_dup )) == NULL )
130 msg_Warn( p_access, "could not open %s", psz_dup );
136 /* Set up p_access */
137 p_access->pf_read = NULL;
138 p_access->pf_block = Block;
139 p_access->pf_control = Control;
140 p_access->pf_seek = Seek;
141 p_access->info.i_update = 0;
142 p_access->info.i_size = 0;
143 p_access->info.i_pos = 0;
144 p_access->info.b_eof = VLC_FALSE;
145 p_access->info.i_title = 0;
146 p_access->info.i_seekpoint = 0;
147 p_access->p_sys = p_sys = malloc( sizeof( access_sys_t ) );
148 memset( p_sys, 0, sizeof( access_sys_t ) );
149 p_sys->vcddev = vcddev;
151 /* We read the Table Of Content information */
152 p_sys->i_titles = ioctl_GetTracksMap( VLC_OBJECT(p_access),
153 p_sys->vcddev, &p_sys->p_sectors );
154 if( p_sys->i_titles < 0 )
156 msg_Err( p_access, "unable to count tracks" );
159 else if( p_sys->i_titles <= 0 )
161 msg_Err( p_access, "no audio tracks found" );
165 /* Build title table */
166 for( i = 0; i < p_sys->i_titles; i++ )
168 input_title_t *t = p_sys->title[i] = vlc_input_title_New();
170 fprintf( stderr, "title[%d] start=%d\n", i, p_sys->p_sectors[i] );
171 fprintf( stderr, "title[%d] end=%d\n", i, p_sys->p_sectors[i+1] );
173 t->i_size = sizeof( WAVEHEADER ) +
174 ( p_sys->p_sectors[i+1] - p_sys->p_sectors[i] ) *
175 (int64_t)CDDA_DATA_SIZE;
177 t->i_length = I64C(1000000) * t->i_size / 44100 / 4;
180 /* Starting title and sector */
181 if( i_title >= p_sys->i_titles )
183 p_sys->i_sector = p_sys->p_sectors[i_title];
184 p_access->info.i_title = i_title;
185 p_access->info.i_size = p_sys->title[i_title]->i_size;
187 /* Build a WAV header for the output data */
188 memset( &p_sys->waveheader, 0, sizeof(WAVEHEADER) );
189 SetWLE( &p_sys->waveheader.Format, 1 ); /*WAVE_FORMAT_PCM*/
190 SetWLE( &p_sys->waveheader.BitsPerSample, 16);
191 p_sys->waveheader.MainChunkID = VLC_FOURCC('R', 'I', 'F', 'F');
192 p_sys->waveheader.Length = 0; /* we just don't know */
193 p_sys->waveheader.ChunkTypeID = VLC_FOURCC('W', 'A', 'V', 'E');
194 p_sys->waveheader.SubChunkID = VLC_FOURCC('f', 'm', 't', ' ');
195 SetDWLE( &p_sys->waveheader.SubChunkLength, 16);
196 SetWLE( &p_sys->waveheader.Modus, 2);
197 SetDWLE( &p_sys->waveheader.SampleFreq, 44100);
198 SetWLE( &p_sys->waveheader.BytesPerSample,
199 2 /*Modus*/ * 16 /*BitsPerSample*/ / 8 );
200 SetDWLE( &p_sys->waveheader.BytesPerSec,
201 2*16/8 /*BytesPerSample*/ * 44100 /*SampleFreq*/ );
202 p_sys->waveheader.DataChunkID = VLC_FOURCC('d', 'a', 't', 'a');
203 p_sys->waveheader.DataLength = 0; /* we just don't know */
206 var_Create( p_access, "cdda-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
210 ioctl_Close( VLC_OBJECT(p_access), p_sys->vcddev );
215 /*****************************************************************************
217 *****************************************************************************/
218 static void Close( vlc_object_t *p_this )
220 access_t *p_access = (access_t *)p_this;
221 access_sys_t *p_sys = p_access->p_sys;
224 for( i = 0; i < p_sys->i_titles; i++ )
226 vlc_input_title_Delete( p_sys->title[i] );
229 ioctl_Close( p_this, p_sys->vcddev );
233 /*****************************************************************************
234 * Block: read data (CDDA_DATA_ONCE)
235 *****************************************************************************/
236 static block_t *Block( access_t *p_access )
238 access_sys_t *p_sys = p_access->p_sys;
244 if( p_access->info.b_eof )
247 if( p_access->info.i_pos < sizeof( WAVEHEADER ) )
249 /* Return only the header */
250 p_block = block_New( p_access, sizeof( WAVEHEADER ) );
251 memcpy( p_block->p_buffer, &p_sys->waveheader, sizeof(WAVEHEADER) );
253 p_block->i_buffer -= p_access->info.i_pos;
254 p_block->p_buffer += p_access->info.i_pos;
256 p_access->info.i_pos += p_block->i_buffer;
261 i_blocks = CDDA_BLOCKS_ONCE;
262 if( p_sys->i_sector + i_blocks >= p_sys->p_sectors[p_access->info.i_title + 1 ] )
264 i_blocks = p_sys->p_sectors[p_access->info.i_title + 1 ] - p_sys->i_sector;
265 if( i_blocks <= 0 ) i_blocks = 1; /* Should never occur */
268 p_block = block_New( p_access, i_blocks * CDDA_DATA_SIZE );
270 if( ioctl_ReadSectors( VLC_OBJECT(p_access), p_sys->vcddev, p_sys->i_sector,
271 p_block->p_buffer, i_blocks, CDDA_TYPE ) < 0 )
273 msg_Err( p_access, "cannot read a sector" );
274 block_Release( p_block );
277 i_blocks = 1; /* Next sector */
281 for( i = 0; i < i_blocks; i++ )
283 /* A good sector read */
287 /* Check end of title */
288 if( p_sys->i_sector >= p_sys->p_sectors[p_access->info.i_title + 1] )
290 if( p_access->info.i_title + 1 >= p_sys->i_titles )
292 p_access->info.b_eof = VLC_TRUE;
295 p_access->info.i_update |= INPUT_UPDATE_TITLE|INPUT_UPDATE_SIZE;
296 p_access->info.i_title++;
297 p_access->info.i_size = p_sys->title[p_access->info.i_title]->i_size;
298 p_access->info.i_pos = sizeof( WAVEHEADER );
304 block_Release( p_block );
310 int i_skip = ( p_access->info.i_pos - sizeof( WAVEHEADER ) ) % CDDA_DATA_SIZE;
312 /* Really read data */
313 p_block->i_buffer = i_read * CDDA_DATA_SIZE;
315 p_block->i_buffer -= i_skip;
316 p_block->p_buffer += i_skip;
318 p_access->info.i_pos += p_block->i_buffer;
324 /****************************************************************************
326 ****************************************************************************/
327 static int Seek( access_t *p_access, int64_t i_pos )
329 access_sys_t * p_sys = p_access->p_sys;
331 p_access->info.i_pos = i_pos;
333 if( i_pos >= sizeof( WAVEHEADER ) )
336 p_sys->i_sector = p_sys->p_sectors[p_access->info.i_title] +
337 ( i_pos - sizeof( WAVEHEADER ) ) / (int64_t)CDDA_DATA_SIZE;
338 if( p_sys->i_sector >= p_sys->p_sectors[p_access->info.i_title + 1] )
340 p_sys->i_sector = p_sys->p_sectors[p_access->info.i_title + 1] - 1;
344 p_sys->i_sector = p_sys->p_sectors[p_access->info.i_title];
346 p_access->info.b_eof = VLC_FALSE;
350 /*****************************************************************************
352 *****************************************************************************/
353 static int Control( access_t *p_access, int i_query, va_list args )
355 access_sys_t *p_sys = p_access->p_sys;
359 input_title_t ***ppp_title;
365 case ACCESS_CAN_SEEK:
366 case ACCESS_CAN_FASTSEEK:
367 case ACCESS_CAN_PAUSE:
368 case ACCESS_CAN_CONTROL_PACE:
369 pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
375 pi_int = (int*)va_arg( args, int * );
376 *pi_int = CDDA_DATA_ONCE;
379 case ACCESS_GET_PTS_DELAY:
380 pi_64 = (int64_t*)va_arg( args, int64_t * );
381 *pi_64 = (int64_t)var_GetInteger( p_access, "cdda-caching" ) * I64C(1000);
385 case ACCESS_SET_PAUSE_STATE:
388 case ACCESS_GET_TITLE_INFO:
389 ppp_title = (input_title_t***)va_arg( args, input_title_t*** );
390 pi_int = (int*)va_arg( args, int* );
392 /* Duplicate title infos */
393 *pi_int = p_sys->i_titles;
394 *ppp_title = malloc( sizeof( input_title_t ** ) * p_sys->i_titles );
395 for( i = 0; i < p_sys->i_titles; i++ )
397 (*ppp_title)[i] = vlc_input_title_Duplicate( p_sys->title[i] );
401 case ACCESS_SET_TITLE:
402 i = (int)va_arg( args, int );
403 if( i != p_access->info.i_title )
406 p_access->info.i_update |= INPUT_UPDATE_TITLE|INPUT_UPDATE_SIZE;
407 p_access->info.i_title = i;
408 p_access->info.i_size = p_sys->title[i]->i_size;
409 p_access->info.i_pos = sizeof(WAVEHEADER);
411 /* Next sector to read */
412 p_sys->i_sector = p_sys->p_sectors[i];
416 case ACCESS_SET_SEEKPOINT:
420 msg_Err( p_access, "unimplemented query in control" );