cdda.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:22k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * cdda.c : CD digital audio input module for vlc
- *****************************************************************************
- * Copyright (C) 2000, 2003 the VideoLAN team
- * $Id: bddbfbfd900e0f8e28079886f967471ed8e59b55 $
- *
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- * Gildas Bazin <gbazin@netcourrier.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- /**
- * Todo:
- * - Improve CDDB support (non-blocking, cache, ...)
- * - Fix tracknumber in MRL
- */
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include <vlc_plugin.h>
- #include <vlc_input.h>
- #include <vlc_access.h>
- #include <vlc_meta.h>
- #include <vlc_charset.h>
- #include <vlc_codecs.h> /* For WAVEHEADER */
- #include "vcd/cdrom.h"
- #ifdef HAVE_LIBCDDB
- #include <cddb/cddb.h>
- #endif
- #include <errno.h>
- /*****************************************************************************
- * Module descriptior
- *****************************************************************************/
- static int Open ( vlc_object_t * );
- static void Close( vlc_object_t * );
- #define CACHING_TEXT N_("Caching value in ms")
- #define CACHING_LONGTEXT N_(
- "Default caching value for Audio CDs. This "
- "value should be set in milliseconds." )
- vlc_module_begin ()
- set_shortname( N_("Audio CD"))
- set_description( N_("Audio CD input") )
- set_capability( "access", 10 )
- set_category( CAT_INPUT )
- set_subcategory( SUBCAT_INPUT_ACCESS )
- set_callbacks( Open, Close )
- add_usage_hint( N_("[cdda:][device][@[track]]") )
- add_integer( "cdda-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT,
- CACHING_LONGTEXT, true )
- change_safe()
- add_integer( "cdda-track", 0 , NULL, NULL, NULL, true )
- change_internal ()
- add_integer( "cdda-first-sector", -1, NULL, NULL, NULL, true )
- change_internal ()
- add_integer( "cdda-last-sector", -1, NULL, NULL, NULL, true )
- change_internal ()
- add_string( "cddb-server", "freedb.freedb.org", NULL,
- N_( "CDDB Server" ), N_( "Address of the CDDB server to use." ),
- true )
- add_integer( "cddb-port", 8880, NULL,
- N_( "CDDB port" ), N_( "CDDB Server port to use." ),
- true )
- add_shortcut( "cdda" )
- add_shortcut( "cddasimple" )
- vlc_module_end ()
- /* how many blocks VCDRead will read in each loop */
- #define CDDA_BLOCKS_ONCE 20
- #define CDDA_DATA_ONCE (CDDA_BLOCKS_ONCE * CDDA_DATA_SIZE)
- /*****************************************************************************
- * Access: local prototypes
- *****************************************************************************/
- struct access_sys_t
- {
- vcddev_t *vcddev; /* vcd device descriptor */
- /* Current position */
- int i_sector; /* Current Sector */
- int * p_sectors; /* Track sectors */
- /* Wave header for the output data */
- WAVEHEADER waveheader;
- bool b_header;
- int i_track;
- int i_first_sector;
- int i_last_sector;
- };
- static block_t *Block( access_t * );
- static int Seek( access_t *, int64_t );
- static int Control( access_t *, int, va_list );
- static int GetTracks( access_t *p_access, input_item_t *p_current );
- #ifdef HAVE_LIBCDDB
- static cddb_disc_t *GetCDDBInfo( access_t *p_access, int i_titles, int *p_sectors );
- #endif
- /*****************************************************************************
- * Open: open cdda
- *****************************************************************************/
- static int Open( vlc_object_t *p_this )
- {
- access_t *p_access = (access_t*)p_this;
- access_sys_t *p_sys;
- vcddev_t *vcddev;
- char *psz_name;
- int i_ret;
- if( !p_access->psz_path || !*p_access->psz_path )
- {
- /* Only when selected */
- if( !p_this->b_force ) return VLC_EGENERIC;
- psz_name = var_CreateGetString( p_this, "cd-audio" );
- if( !psz_name || !*psz_name )
- {
- free( psz_name );
- return VLC_EGENERIC;
- }
- }
- else psz_name = ToLocaleDup( p_access->psz_path );
- #ifdef WIN32
- if( psz_name[0] && psz_name[1] == ':' &&
- psz_name[2] == '\' && psz_name[3] == ' ' ) psz_name[2] = ' ';
- #endif
- /* Open CDDA */
- if( (vcddev = ioctl_Open( VLC_OBJECT(p_access), psz_name )) == NULL )
- {
- msg_Warn( p_access, "could not open %s", psz_name );
- free( psz_name );
- return VLC_EGENERIC;
- }
- free( psz_name );
- /* Set up p_access */
- STANDARD_BLOCK_ACCESS_INIT
- p_sys->vcddev = vcddev;
- /* Do we play a single track ? */
- p_sys->i_track = var_CreateGetInteger( p_access, "cdda-track" ) - 1;
- if( p_sys->i_track < 0 )
- {
- /* We only do separate items if the whole disc is requested */
- input_thread_t *p_input = (input_thread_t*)vlc_object_find( p_access, VLC_OBJECT_INPUT, FIND_PARENT );
- i_ret = -1;
- if( p_input )
- {
- input_item_t *p_current = input_GetItem( p_input );
- if( p_current )
- i_ret = GetTracks( p_access, p_current );
- vlc_object_release( p_input );
- }
- if( i_ret < 0 )
- goto error;
- }
- else
- {
- /* Build a WAV header for the output data */
- memset( &p_sys->waveheader, 0, sizeof(WAVEHEADER) );
- SetWLE( &p_sys->waveheader.Format, 1 ); /*WAVE_FORMAT_PCM*/
- SetWLE( &p_sys->waveheader.BitsPerSample, 16);
- p_sys->waveheader.MainChunkID = VLC_FOURCC('R', 'I', 'F', 'F');
- p_sys->waveheader.Length = 0; /* we just don't know */
- p_sys->waveheader.ChunkTypeID = VLC_FOURCC('W', 'A', 'V', 'E');
- p_sys->waveheader.SubChunkID = VLC_FOURCC('f', 'm', 't', ' ');
- SetDWLE( &p_sys->waveheader.SubChunkLength, 16);
- SetWLE( &p_sys->waveheader.Modus, 2);
- SetDWLE( &p_sys->waveheader.SampleFreq, 44100);
- SetWLE( &p_sys->waveheader.BytesPerSample,
- 2 /*Modus*/ * 16 /*BitsPerSample*/ / 8 );
- SetDWLE( &p_sys->waveheader.BytesPerSec,
- 2*16/8 /*BytesPerSample*/ * 44100 /*SampleFreq*/ );
- p_sys->waveheader.DataChunkID = VLC_FOURCC('d', 'a', 't', 'a');
- p_sys->waveheader.DataLength = 0; /* we just don't know */
- p_sys->i_first_sector = var_CreateGetInteger( p_access,
- "cdda-first-sector" );
- p_sys->i_last_sector = var_CreateGetInteger( p_access,
- "cdda-last-sector" );
- /* Tracknumber in MRL */
- if( p_sys->i_first_sector < 0 || p_sys->i_last_sector < 0 )
- {
- const int i_titles = ioctl_GetTracksMap( VLC_OBJECT(p_access),
- p_sys->vcddev, &p_sys->p_sectors );
- if( p_sys->i_track >= i_titles )
- {
- msg_Err( p_access, "invalid track number" );
- goto error;
- }
- p_sys->i_first_sector = p_sys->p_sectors[p_sys->i_track];
- p_sys->i_last_sector = p_sys->p_sectors[p_sys->i_track+1];
- }
- p_sys->i_sector = p_sys->i_first_sector;
- p_access->info.i_size = (p_sys->i_last_sector - p_sys->i_first_sector)
- * (int64_t)CDDA_DATA_SIZE;
- }
- /* PTS delay */
- var_Create( p_access, "cdda-caching", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
- return VLC_SUCCESS;
- error:
- free( p_sys->p_sectors );
- ioctl_Close( VLC_OBJECT(p_access), p_sys->vcddev );
- free( p_sys );
- return VLC_EGENERIC;
- }
- /*****************************************************************************
- * Close: closes cdda
- *****************************************************************************/
- static void Close( vlc_object_t *p_this )
- {
- access_t *p_access = (access_t *)p_this;
- access_sys_t *p_sys = p_access->p_sys;
- free( p_sys->p_sectors );
- ioctl_Close( p_this, p_sys->vcddev );
- free( p_sys );
- }
- /*****************************************************************************
- * Block: read data (CDDA_DATA_ONCE)
- *****************************************************************************/
- static block_t *Block( access_t *p_access )
- {
- access_sys_t *p_sys = p_access->p_sys;
- int i_blocks = CDDA_BLOCKS_ONCE;
- block_t *p_block;
- if( p_sys->i_track < 0 ) p_access->info.b_eof = true;
- /* Check end of file */
- if( p_access->info.b_eof ) return NULL;
- if( !p_sys->b_header )
- {
- /* Return only the header */
- p_block = block_New( p_access, sizeof( WAVEHEADER ) );
- memcpy( p_block->p_buffer, &p_sys->waveheader, sizeof(WAVEHEADER) );
- p_sys->b_header = true;
- return p_block;
- }
- if( p_sys->i_sector >= p_sys->i_last_sector )
- {
- p_access->info.b_eof = true;
- return NULL;
- }
- /* Don't read too far */
- if( p_sys->i_sector + i_blocks >= p_sys->i_last_sector )
- i_blocks = p_sys->i_last_sector - p_sys->i_sector;
- /* Do the actual reading */
- if( !( p_block = block_New( p_access, i_blocks * CDDA_DATA_SIZE ) ) )
- {
- msg_Err( p_access, "cannot get a new block of size: %i",
- i_blocks * CDDA_DATA_SIZE );
- return NULL;
- }
- if( ioctl_ReadSectors( VLC_OBJECT(p_access), p_sys->vcddev,
- p_sys->i_sector, p_block->p_buffer, i_blocks, CDDA_TYPE ) < 0 )
- {
- msg_Err( p_access, "cannot read sector %i", p_sys->i_sector );
- block_Release( p_block );
- /* Try to skip one sector (in case of bad sectors) */
- p_sys->i_sector++;
- p_access->info.i_pos += CDDA_DATA_SIZE;
- return NULL;
- }
- /* Update a few values */
- p_sys->i_sector += i_blocks;
- p_access->info.i_pos += p_block->i_buffer;
- return p_block;
- }
- /****************************************************************************
- * Seek
- ****************************************************************************/
- static int Seek( access_t *p_access, int64_t i_pos )
- {
- access_sys_t *p_sys = p_access->p_sys;
- /* Next sector to read */
- p_sys->i_sector = p_sys->i_first_sector + i_pos / CDDA_DATA_SIZE;
- p_access->info.i_pos = i_pos;
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Control:
- *****************************************************************************/
- static int Control( access_t *p_access, int i_query, va_list args )
- {
- bool *pb_bool;
- int64_t *pi_64;
- switch( i_query )
- {
- case ACCESS_CAN_SEEK:
- case ACCESS_CAN_FASTSEEK:
- case ACCESS_CAN_PAUSE:
- case ACCESS_CAN_CONTROL_PACE:
- pb_bool = (bool*)va_arg( args, bool* );
- *pb_bool = true;
- break;
- case ACCESS_GET_PTS_DELAY:
- pi_64 = (int64_t*)va_arg( args, int64_t * );
- *pi_64 = var_GetInteger( p_access, "cdda-caching" ) * INT64_C(1000);
- break;
- case ACCESS_SET_PAUSE_STATE:
- break;
- case ACCESS_GET_TITLE_INFO:
- case ACCESS_SET_TITLE:
- case ACCESS_GET_META:
- case ACCESS_SET_SEEKPOINT:
- case ACCESS_SET_PRIVATE_ID_STATE:
- case ACCESS_GET_CONTENT_TYPE:
- return VLC_EGENERIC;
- default:
- msg_Warn( p_access, "unimplemented query in control" );
- return VLC_EGENERIC;
- }
- return VLC_SUCCESS;
- }
- static int GetTracks( access_t *p_access, input_item_t *p_current )
- {
- access_sys_t *p_sys = p_access->p_sys;
- const int i_titles = ioctl_GetTracksMap( VLC_OBJECT(p_access),
- p_sys->vcddev, &p_sys->p_sectors );
- if( i_titles <= 0 )
- {
- if( i_titles < 0 )
- msg_Err( p_access, "unable to count tracks" );
- else if( i_titles <= 0 )
- msg_Err( p_access, "no audio tracks found" );
- return VLC_EGENERIC;;
- }
- /* */
- input_item_SetName( p_current, "Audio CD" );
- const char *psz_album = NULL;
- const char *psz_year = NULL;
- const char *psz_genre = NULL;
- const char *psz_artist = NULL;
- const char *psz_description = NULL;
- /* Return true if the given string is not NULL and not empty */
- #define NONEMPTY( psz ) ( (psz) && *(psz) )
- /* If the given string is NULL or empty, fill it by the return value of 'code' */
- #define ON_EMPTY( psz, code ) do { if( !NONEMPTY( psz) ) { (psz) = code; } } while(0)
- /* Retreive CDDB informations */
- #ifdef HAVE_LIBCDDB
- char psz_year_buffer[4+1];
- cddb_disc_t *p_disc = GetCDDBInfo( p_access, i_titles, p_sys->p_sectors );
- if( p_disc )
- {
- psz_album = cddb_disc_get_title( p_disc );
- psz_genre = cddb_disc_get_genre( p_disc );
- /* */
- const unsigned i_year = cddb_disc_get_year( p_disc );
- if( i_year > 0 )
- {
- psz_year = psz_year_buffer;
- snprintf( psz_year_buffer, sizeof(psz_year_buffer), "%u", i_year );
- }
- /* Set artist only if unique */
- for( int i = 0; i < i_titles; i++ )
- {
- cddb_track_t *t = cddb_disc_get_track( p_disc, i );
- if( !t )
- continue;
- const char *psz_track_artist = cddb_track_get_artist( t );
- if( psz_artist && psz_track_artist &&
- strcmp( psz_artist, psz_track_artist ) )
- {
- psz_artist = NULL;
- break;
- }
- psz_artist = psz_track_artist;
- }
- }
- #endif
- /* */
- vlc_meta_t **pp_cd_text;
- int i_cd_text;
- if( ioctl_GetCdText( VLC_OBJECT(p_access), p_sys->vcddev, &pp_cd_text, &i_cd_text ) )
- {
- msg_Dbg( p_access, "CD-TEXT information missing" );
- i_cd_text = 0;
- pp_cd_text = NULL;
- }
- /* Retreive CD-TEXT informations but prefer CDDB */
- if( i_cd_text > 0 && pp_cd_text[0] )
- {
- const vlc_meta_t *p_disc = pp_cd_text[0];
- ON_EMPTY( psz_album, vlc_meta_Get( p_disc, vlc_meta_Album ) );
- ON_EMPTY( psz_genre, vlc_meta_Get( p_disc, vlc_meta_Genre ) );
- ON_EMPTY( psz_artist, vlc_meta_Get( p_disc, vlc_meta_Artist ) );
- ON_EMPTY( psz_description, vlc_meta_Get( p_disc, vlc_meta_Description ) );
- }
- if( NONEMPTY( psz_album ) )
- {
- input_item_SetName( p_current, psz_album );
- input_item_SetAlbum( p_current, psz_album );
- }
- if( NONEMPTY( psz_genre ) )
- input_item_SetGenre( p_current, psz_genre );
- if( NONEMPTY( psz_artist ) )
- input_item_SetArtist( p_current, psz_artist );
- if( NONEMPTY( psz_year ) )
- input_item_SetDate( p_current, psz_year );
- if( NONEMPTY( psz_description ) )
- input_item_SetDescription( p_current, psz_description );
- const mtime_t i_duration = (int64_t)( p_sys->p_sectors[i_titles] - p_sys->p_sectors[0] ) *
- CDDA_DATA_SIZE * 1000000 / 44100 / 2 / 2;
- input_item_SetDuration( p_current, i_duration );
- /* Build title table */
- for( int i = 0; i < i_titles; i++ )
- {
- input_item_t *p_input_item;
- char *psz_uri, *psz_opt, *psz_first, *psz_last;
- char *psz_name;
- msg_Dbg( p_access, "track[%d] start=%d", i, p_sys->p_sectors[i] );
- /* */
- if( asprintf( &psz_uri, "cdda://%s", p_access->psz_path ) == -1 )
- psz_uri = NULL;
- if( asprintf( &psz_opt, "cdda-track=%i", i+1 ) == -1 )
- psz_opt = NULL;
- if( asprintf( &psz_first, "cdda-first-sector=%i",p_sys->p_sectors[i] ) == -1 )
- psz_first = NULL;
- if( asprintf( &psz_last, "cdda-last-sector=%i", p_sys->p_sectors[i+1] ) == -1 )
- psz_last = NULL;
- /* Define a "default name" */
- if( asprintf( &psz_name, _("Audio CD - Track %02i"), (i+1) ) == -1 )
- psz_name = NULL;
- /* Create playlist items */
- const mtime_t i_duration = (int64_t)( p_sys->p_sectors[i+1] - p_sys->p_sectors[i] ) *
- CDDA_DATA_SIZE * 1000000 / 44100 / 2 / 2;
- p_input_item = input_item_NewWithType( VLC_OBJECT( p_access ),
- psz_uri, psz_name, 0, NULL, 0, i_duration,
- ITEM_TYPE_DISC );
- input_item_CopyOptions( p_current, p_input_item );
- input_item_AddOption( p_input_item, psz_first, VLC_INPUT_OPTION_TRUSTED );
- input_item_AddOption( p_input_item, psz_last, VLC_INPUT_OPTION_TRUSTED );
- input_item_AddOption( p_input_item, psz_opt, VLC_INPUT_OPTION_TRUSTED );
- const char *psz_track_title = NULL;
- const char *psz_track_artist = NULL;
- const char *psz_track_genre = NULL;
- const char *psz_track_description = NULL;
- #ifdef HAVE_LIBCDDB
- /* Retreive CDDB informations */
- if( p_disc )
- {
- cddb_track_t *t = cddb_disc_get_track( p_disc, i );
- if( t != NULL )
- {
- psz_track_title = cddb_track_get_title( t );
- psz_track_artist = cddb_track_get_artist( t );
- }
- }
- #endif
- /* Retreive CD-TEXT informations but prefer CDDB */
- if( i+1 < i_cd_text && pp_cd_text[i+1] )
- {
- const vlc_meta_t *t = pp_cd_text[i+1];
- ON_EMPTY( psz_track_title, vlc_meta_Get( t, vlc_meta_Title ) );
- ON_EMPTY( psz_track_artist, vlc_meta_Get( t, vlc_meta_Artist ) );
- ON_EMPTY( psz_track_genre, vlc_meta_Get( t, vlc_meta_Genre ) );
- ON_EMPTY( psz_track_description, vlc_meta_Get( t, vlc_meta_Description ) );
- }
- /* */
- ON_EMPTY( psz_track_artist, psz_artist );
- ON_EMPTY( psz_track_genre, psz_genre );
- ON_EMPTY( psz_track_description, psz_description );
- /* */
- if( NONEMPTY( psz_track_title ) )
- {
- input_item_SetName( p_input_item, psz_track_title );
- input_item_SetTitle( p_input_item, psz_track_title );
- }
- if( NONEMPTY( psz_track_artist ) )
- input_item_SetArtist( p_input_item, psz_track_artist );
- if( NONEMPTY( psz_track_genre ) )
- input_item_SetGenre( p_input_item, psz_track_genre );
- if( NONEMPTY( psz_track_description ) )
- input_item_SetDescription( p_input_item, psz_track_description );
- if( NONEMPTY( psz_album ) )
- input_item_SetAlbum( p_input_item, psz_album );
- if( NONEMPTY( psz_year ) )
- input_item_SetDate( p_input_item, psz_year );
- char psz_num[3+1];
- snprintf( psz_num, sizeof(psz_num), "%d", 1+i );
- input_item_SetTrackNum( p_input_item, psz_num );
- input_item_AddSubItem( p_current, p_input_item );
- vlc_gc_decref( p_input_item );
- free( psz_uri ); free( psz_opt ); free( psz_name );
- free( psz_first ); free( psz_last );
- }
- #undef ON_EMPTY
- #undef NONEMPTY
- /* */
- for( int i = 0; i < i_cd_text; i++ )
- {
- vlc_meta_t *p_meta = pp_cd_text[i];
- if( !p_meta )
- continue;
- vlc_meta_Delete( p_meta );
- }
- free( pp_cd_text );
- #ifdef HAVE_LIBCDDB
- if( p_disc )
- cddb_disc_destroy( p_disc );
- #endif
- return VLC_SUCCESS;
- }
- #ifdef HAVE_LIBCDDB
- static cddb_disc_t *GetCDDBInfo( access_t *p_access, int i_titles, int *p_sectors )
- {
- if( var_CreateGetInteger( p_access, "album-art" ) == ALBUM_ART_WHEN_ASKED )
- return NULL;
- /* */
- cddb_conn_t *p_cddb = cddb_new();
- if( !p_cddb )
- {
- msg_Warn( p_access, "unable to use CDDB" );
- return NULL;
- }
- /* */
- char *psz_tmp = config_GetPsz( p_access, "cddb-server" );
- cddb_set_server_name( p_cddb, psz_tmp );
- free( psz_tmp );
- cddb_set_server_port( p_cddb, config_GetInt( p_access, "cddb-port" ) );
- cddb_set_email_address( p_cddb, "vlc@videolan.org" );
- /// todo
- cddb_cache_disable( p_cddb );
- // cddb_cache_set_dir( p_cddb,
- // config_GetPsz( p_access,
- // MODULE_STRING "-cddb-cachedir") );
- cddb_set_timeout( p_cddb, 10 );
- /// todo
- cddb_http_disable( p_cddb);
- /* */
- cddb_disc_t *p_disc = cddb_disc_new();
- if( !p_disc )
- {
- msg_Err( p_access, "unable to create CDDB disc structure." );
- goto error;
- }
- int64_t i_length = 0;
- for( int i = 0; i < i_titles; i++ )
- {
- cddb_track_t *t = cddb_track_new();
- cddb_track_set_frame_offset( t, p_sectors[i] );
- cddb_disc_add_track( p_disc, t );
- const int64_t i_size = ( p_sectors[i+1] - p_sectors[i] ) *
- (int64_t)CDDA_DATA_SIZE;
- i_length += INT64_C(1000000) * i_size / 44100 / 4 ;
- }
- cddb_disc_set_length( p_disc, (int)(i_length/1000000) );
- if( !cddb_disc_calc_discid( p_disc ) )
- {
- msg_Err( p_access, "CDDB disc ID calculation failed" );
- goto error;
- }
- const int i_matches = cddb_query( p_cddb, p_disc );
- if( i_matches <= 0 )
- {
- msg_Warn( p_access, "CDDB error: %s", cddb_error_str(errno));
- goto error;
- }
- if( i_matches > 1 )
- msg_Warn( p_access, "found %d matches in CDDB. Using first one.", i_matches );
- cddb_read( p_cddb, p_disc );
- cddb_destroy( p_cddb);
- return p_disc;
- error:
- if( p_disc )
- cddb_disc_destroy( p_disc );
- cddb_destroy( p_cddb );
- return NULL;
- }
- #endif /*HAVE_LIBCDDB*/