+/*****************************************************************************
+ * 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 <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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <vlc/vlc.h>
+#include <vlc/input.h>
+#include <sys/types.h>
+
+#include "codecs.h"
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#include <string.h>
+
+#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;
+}