/***************************************************************************** * cdda.c : CD digital audio input module for vlc ***************************************************************************** * Copyright (C) 2000 VideoLAN * $Id: cdda.c,v 1.1 2003/05/17 20:30:31 gbazin Exp $ * * Authors: Laurent Aimar * Gildas Bazin * * 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA. *****************************************************************************/ /***************************************************************************** * Preamble *****************************************************************************/ #include #include #include #include #include #include "codecs.h" #ifdef HAVE_UNISTD_H # include #endif #include #include "vcd/cdrom.h" /* how many blocks VCDRead will read in each loop */ #define CDDA_BLOCKS_ONCE 20 #define CDDA_DATA_ONCE (CDDA_BLOCKS_ONCE * CDDA_DATA_SIZE) /***************************************************************************** * cdda_data_t: CD audio information *****************************************************************************/ typedef struct cdda_data_s { vcddev_t *vcddev; /* vcd device descriptor */ int i_nb_tracks; /* Nb of tracks (titles) */ int i_track; /* Current track */ int i_sector; /* Current Sector */ int * p_sectors; /* Track sectors */ vlc_bool_t b_end_of_track; /* If the end of track was reached */ } cdda_data_t; struct demux_sys_t { es_descriptor_t *p_es; mtime_t i_pts; }; /***************************************************************************** * Local prototypes *****************************************************************************/ static int CDDAOpen ( vlc_object_t * ); static void CDDAClose ( vlc_object_t * ); static int CDDARead ( input_thread_t *, byte_t *, size_t ); static void CDDASeek ( input_thread_t *, off_t ); static int CDDASetArea ( input_thread_t *, input_area_t * ); static int CDDASetProgram ( input_thread_t *, pgrm_descriptor_t * ); static int CDDAOpenDemux ( vlc_object_t * ); static void CDDACloseDemux ( vlc_object_t * ); static int CDDADemux ( input_thread_t * p_input ); /***************************************************************************** * Module descriptior *****************************************************************************/ #define CACHING_TEXT N_("Caching value in ms") #define CACHING_LONGTEXT N_( \ "Allows you to modify the default caching value for cdda streams. This " \ "value should be set in miliseconds units." ) vlc_module_begin(); set_description( _("CD Audio input") ); add_integer( "cdda-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE ); set_capability( "access", 80 ); set_callbacks( CDDAOpen, CDDAClose ); add_shortcut( "cdda" ); add_submodule(); set_description( _("CD Audio demux") ); set_capability( "demux", 0 ); set_callbacks( CDDAOpenDemux, CDDACloseDemux ); add_shortcut( "cdda" ); vlc_module_end(); /***************************************************************************** * CDDAOpen: open cdda *****************************************************************************/ static int CDDAOpen( vlc_object_t *p_this ) { input_thread_t * p_input = (input_thread_t *)p_this; char * psz_orig; char * psz_parser; char * psz_source; cdda_data_t * p_cdda; int i; input_area_t * p_area; int i_title = 1; vcddev_t *vcddev; #ifdef WIN32 /* On Win32 we want the CDDA access plugin to be explicitly requested, * we end up with lots of problems otherwise */ if( !p_input->psz_access || !*p_input->psz_access ) return( -1 ); #endif /* parse the options passed in command line : */ psz_orig = psz_parser = psz_source = strdup( p_input->psz_name ); if( !psz_orig ) { return( -1 ); } while( *psz_parser && *psz_parser != '@' ) { psz_parser++; } if( *psz_parser == '@' ) { /* Found options */ *psz_parser = '\0'; ++psz_parser; i_title = (int)strtol( psz_parser, NULL, 10 ); i_title = i_title ? i_title : 1; } if( !*psz_source ) { if( !p_input->psz_access ) { free( psz_orig ); return -1; } psz_source = config_GetPsz( p_input, "vcd" ); if( !psz_source ) return -1; } /* Open CDDA */ if( !(vcddev = ioctl_Open( p_this, psz_source )) ) { msg_Warn( p_input, "could not open %s", psz_source ); free( psz_source ); return -1; } free( psz_source ); p_cdda = malloc( sizeof(cdda_data_t) ); if( p_cdda == NULL ) { msg_Err( p_input, "out of memory" ); free( psz_source ); return -1; } p_cdda->vcddev = vcddev; p_input->p_access_data = (void *)p_cdda; p_input->i_mtu = CDDA_DATA_ONCE; /* We read the Table Of Content information */ p_cdda->i_nb_tracks = ioctl_GetTracksMap( VLC_OBJECT(p_input), p_cdda->vcddev, &p_cdda->p_sectors ); if( p_cdda->i_nb_tracks < 0 ) msg_Err( p_input, "unable to count tracks" ); else if( p_cdda->i_nb_tracks <= 0 ) msg_Err( p_input, "no audio tracks found" ); if( p_cdda->i_nb_tracks <= 1) { ioctl_Close( p_this, p_cdda->vcddev ); free( p_cdda ); return -1; } if( i_title >= p_cdda->i_nb_tracks || i_title < 1 ) i_title = 1; /* Set stream and area data */ vlc_mutex_lock( &p_input->stream.stream_lock ); /* Initialize ES structures */ input_InitStream( p_input, 0 ); /* cdda input method */ p_input->stream.i_method = INPUT_METHOD_CDDA; p_input->stream.b_pace_control = 1; p_input->stream.b_seekable = 1; p_input->stream.i_mux_rate = 44100 * 4 / 50; #define area p_input->stream.pp_areas for( i = 1 ; i <= p_cdda->i_nb_tracks ; i++ ) { input_AddArea( p_input, i, 1 ); /* Absolute start offset and size */ area[i]->i_start = (off_t)p_cdda->p_sectors[i-1] * (off_t)CDDA_DATA_SIZE; area[i]->i_size = (off_t)(p_cdda->p_sectors[i] - p_cdda->p_sectors[i-1]) * (off_t)CDDA_DATA_SIZE; } #undef area p_area = p_input->stream.pp_areas[i_title]; CDDASetArea( p_input, p_area ); vlc_mutex_unlock( &p_input->stream.stream_lock ); if( !p_input->psz_demux || !*p_input->psz_demux ) { p_input->psz_demux = "cdda"; } p_input->pf_read = CDDARead; p_input->pf_seek = CDDASeek; p_input->pf_set_area = CDDASetArea; p_input->pf_set_program = CDDASetProgram; return 0; } /***************************************************************************** * CDDAClose: closes cdda *****************************************************************************/ static void CDDAClose( vlc_object_t *p_this ) { input_thread_t * p_input = (input_thread_t *)p_this; cdda_data_t *p_cdda = (cdda_data_t *)p_input->p_access_data; ioctl_Close( p_this, p_cdda->vcddev ); free( p_cdda ); } /***************************************************************************** * CDDARead: reads from the CDDA into PES packets. ***************************************************************************** * Returns -1 in case of error, 0 in case of EOF, otherwise the number of * bytes. *****************************************************************************/ static int CDDARead( input_thread_t * p_input, byte_t * p_buffer, size_t i_len ) { cdda_data_t * p_cdda; int i_blocks; int i_index; int i_read; p_cdda = (cdda_data_t *)p_input->p_access_data; i_read = 0; /* Compute the number of blocks we have to read */ i_blocks = i_len / CDDA_DATA_SIZE; for ( i_index = 0; i_index < i_blocks; i_index++ ) { if ( ioctl_ReadSector( VLC_OBJECT(p_input), p_cdda->vcddev, p_cdda->i_sector, p_buffer + i_index * CDDA_DATA_SIZE, CDDA_DATA_START, CDDA_DATA_SIZE ) < 0 ) { msg_Err( p_input, "could not read sector %d", p_cdda->i_sector ); return -1; } p_cdda->i_sector ++; if ( p_cdda->i_sector == p_cdda->p_sectors[p_cdda->i_track + 1] ) { input_area_t *p_area; if ( p_cdda->i_track >= p_cdda->i_nb_tracks - 1 ) return 0; /* EOF */ vlc_mutex_lock( &p_input->stream.stream_lock ); p_area = p_input->stream.pp_areas[ p_input->stream.p_selected_area->i_id + 1 ]; msg_Dbg( p_input, "new title" ); p_area->i_part = 1; CDDASetArea( p_input, p_area ); vlc_mutex_unlock( &p_input->stream.stream_lock ); } i_read += CDDA_DATA_SIZE; } if ( i_len % CDDA_DATA_SIZE ) /* this should not happen */ { msg_Err( p_input, "must read full sectors" ); } return i_read; } /***************************************************************************** * CDDASetProgram: Does nothing since a CDDA is mono_program *****************************************************************************/ static int CDDASetProgram( input_thread_t * p_input, pgrm_descriptor_t * p_program) { return 0; } /***************************************************************************** * CDDASetArea: initialize input data for title x. * It should be called for each user navigation request. ****************************************************************************/ static int CDDASetArea( input_thread_t * p_input, input_area_t * p_area ) { cdda_data_t *p_cdda = (cdda_data_t*)p_input->p_access_data; vlc_value_t val; /* we can't use the interface slider until initilization is complete */ p_input->stream.b_seekable = 0; if( p_area != p_input->stream.p_selected_area ) { /* Change the default area */ p_input->stream.p_selected_area = p_area; /* Change the current track */ p_cdda->i_track = p_area->i_id - 1; p_cdda->i_sector = p_cdda->p_sectors[p_cdda->i_track]; /* Update the navigation variables without triggering a callback */ val.i_int = p_area->i_id; var_Change( p_input, "title", VLC_VAR_SETVALUE, &val, NULL ); } p_cdda->i_sector = p_cdda->p_sectors[p_cdda->i_track]; p_input->stream.p_selected_area->i_tell = (off_t)p_cdda->i_sector * (off_t)CDDA_DATA_SIZE - p_input->stream.p_selected_area->i_start; /* warn interface that something has changed */ p_input->stream.b_seekable = 1; p_input->stream.b_changed = 1; return 0; } /**************************************************************************** * CDDASeek ****************************************************************************/ static void CDDASeek( input_thread_t * p_input, off_t i_off ) { cdda_data_t * p_cdda; p_cdda = (cdda_data_t *) p_input->p_access_data; p_cdda->i_sector = p_cdda->p_sectors[p_cdda->i_track] + i_off / (off_t)CDDA_DATA_SIZE; vlc_mutex_lock( &p_input->stream.stream_lock ); p_input->stream.p_selected_area->i_tell = (off_t)p_cdda->i_sector * (off_t)CDDA_DATA_SIZE - p_input->stream.p_selected_area->i_start; vlc_mutex_unlock( &p_input->stream.stream_lock ); } /**************************************************************************** * Demux Part ****************************************************************************/ static int CDDAOpenDemux ( vlc_object_t * p_this) { input_thread_t *p_input = (input_thread_t *)p_this; demux_sys_t *p_demux; WAVEFORMATEX *p_wf; if( p_input->stream.i_method != INPUT_METHOD_CDDA ) { return VLC_EGENERIC; } p_demux = malloc( sizeof( es_descriptor_t ) ); p_demux->i_pts = 0; p_demux->p_es = NULL; p_input->pf_demux = CDDADemux; p_input->pf_rewind = NULL; p_input->p_demux_data = p_demux; vlc_mutex_lock( &p_input->stream.stream_lock ); if( input_AddProgram( p_input, 0, 0) == NULL ) { msg_Err( p_input, "cannot add program" ); free( p_input->p_demux_data ); return( -1 ); } p_input->stream.pp_programs[0]->b_is_ok = 0; p_input->stream.p_selected_program = p_input->stream.pp_programs[0]; /* create our ES */ p_demux->p_es = input_AddES( p_input, p_input->stream.p_selected_program, 1 /* id */, AUDIO_ES, NULL, 0 ); if( !p_demux->p_es ) { vlc_mutex_unlock( &p_input->stream.stream_lock ); msg_Err( p_input, "out of memory" ); free( p_input->p_demux_data ); return( -1 ); } p_demux->p_es->i_stream_id = 1; p_demux->p_es->i_fourcc = VLC_FOURCC('a','r','a','w'); p_demux->p_es->p_waveformatex = p_wf = malloc( sizeof( WAVEFORMATEX ) ); p_wf->wFormatTag = WAVE_FORMAT_PCM; p_wf->nChannels = 2; p_wf->nSamplesPerSec = 44100; p_wf->nAvgBytesPerSec = 2 * 44100 * 2; p_wf->nBlockAlign = 4; p_wf->wBitsPerSample = 16; p_wf->cbSize = 0; input_SelectES( p_input, p_demux->p_es ); p_input->stream.p_selected_program->b_is_ok = 1; vlc_mutex_unlock( &p_input->stream.stream_lock ); return VLC_SUCCESS; } static void CDDACloseDemux( vlc_object_t * p_this) { input_thread_t *p_input = (input_thread_t*)p_this; demux_sys_t *p_demux = (demux_sys_t*)p_input->p_demux_data; free( p_demux ); p_input->p_demux_data = NULL; return; } static int CDDADemux( input_thread_t * p_input ) { demux_sys_t *p_demux = (demux_sys_t*)p_input->p_demux_data; ssize_t i_read; data_packet_t * p_data; pes_packet_t * p_pes; input_ClockManageRef( p_input, p_input->stream.p_selected_program, p_demux->i_pts ); if( ( i_read = input_SplitBuffer( p_input, &p_data, CDDA_DATA_SIZE ) ) <= 0 ) { return 0; // EOF } p_pes = input_NewPES( p_input->p_method_data ); if( p_pes == NULL ) { msg_Err( p_input, "out of memory" ); input_DeletePacket( p_input->p_method_data, p_data ); return -1; } p_pes->i_rate = p_input->stream.control.i_rate; p_pes->p_first = p_pes->p_last = p_data; p_pes->i_nb_data = 1; p_pes->i_pes_size = i_read; p_pes->i_dts = p_pes->i_pts = input_ClockGetTS( p_input, p_input->stream.p_selected_program, p_demux->i_pts ); if( p_demux->p_es->p_decoder_fifo ) { input_DecodePES( p_demux->p_es->p_decoder_fifo, p_pes ); } else { input_DeletePES( p_input->p_method_data, p_pes ); } p_demux->i_pts += ((mtime_t)90000) * i_read / (mtime_t)44100 / 4 /* stereo 16 bits */; return 1; }