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/*
$Id: vcdio.c,v 1.9 2007/03/23 21:47:31 dsalt Exp $
Copyright (C) 2002, 2003, 2004, 2005 Rocky Bernstein <rocky@panix.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 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/* Standard includes */
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#include <string.h>
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#include <errno.h>
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_VCDNAV
#include <libvcd/types.h>
#include <libvcd/files.h>
#include <cdio/iso9660.h>
#else
#include "libvcd/types.h"
#include "libvcd/files.h"
#include "cdio/iso9660.h"
#endif
#include "vcdplayer.h"
#include "vcdio.h"
#define LOG_ERR(p_vcdplayer, s, args...) \
if (p_vcdplayer != NULL && p_vcdplayer->log_err != NULL) \
p_vcdplayer->log_err("%s: "s, __func__ , ##args)
#define FREE_AND_NULL(ptr) if (NULL != ptr) free(ptr); ptr = NULL;
/*! Closes VCD device specified via "this", and also wipes memory of it
from it inside "this". */
int
vcdio_close(vcdplayer_t *p_vcdplayer)
{
p_vcdplayer->b_opened = false;
FREE_AND_NULL(p_vcdplayer->psz_source);
FREE_AND_NULL(p_vcdplayer->track);
FREE_AND_NULL(p_vcdplayer->segment);
FREE_AND_NULL(p_vcdplayer->entry);
return vcdinfo_close(p_vcdplayer->vcd);
}
/*! Opens VCD device and initializes things.
- do nothing if the device had already been open and is the same device.
- if the device had been open and is a different, close it before trying
to open new device.
*/
bool
vcdio_open(vcdplayer_t *p_vcdplayer, char *intended_vcd_device)
{
vcdinfo_obj_t *p_vcdinfo = p_vcdplayer->vcd;
unsigned int i;
dbg_print(INPUT_DBG_CALL, "called with %s\n", intended_vcd_device);
if ( p_vcdplayer->b_opened ) {
if ( strcmp(intended_vcd_device, p_vcdplayer->psz_source)==0 ) {
/* Already open and the same device, so do nothing */
return true;
} else {
/* Changing VCD device */
vcdio_close(p_vcdplayer);
}
}
switch ( vcdinfo_open(&p_vcdplayer->vcd, &intended_vcd_device,
DRIVER_UNKNOWN, NULL))
{
case VCDINFO_OPEN_ERROR:
/* Failed to open the device => return failure */
return false;
case VCDINFO_OPEN_VCD:
/* Opened the device, and it's a VCD => proceed */
break;
default:
/* Opened the device, but it's not a VCD => is closed, return failure */
return false;
}
p_vcdinfo = p_vcdplayer->vcd;
p_vcdplayer->psz_source = strdup(intended_vcd_device);
p_vcdplayer->b_opened = true;
p_vcdplayer->i_lids = vcdinfo_get_num_LIDs(p_vcdinfo);
p_vcdplayer->vcd_format = vcdinfo_get_format_version(p_vcdinfo);
p_vcdplayer->i_still = 0;
if (vcdinfo_read_psd (p_vcdinfo)) {
vcdinfo_visit_lot (p_vcdinfo, false);
if (VCD_TYPE_VCD2 == p_vcdplayer->vcd_format &&
vcdinfo_get_psd_x_size(p_vcdinfo)) {
vcdinfo_visit_lot (p_vcdinfo, true);
}
}
/*
Save summary info on tracks, segments and entries...
*/
if ( 0 < (p_vcdplayer->i_tracks = vcdinfo_get_num_tracks(p_vcdinfo)) ) {
p_vcdplayer->track = (vcdplayer_play_item_info_t *)
calloc(p_vcdplayer->i_tracks, sizeof(vcdplayer_play_item_info_t));
for (i=0; i<p_vcdplayer->i_tracks; i++) {
track_t i_track=i+1;
p_vcdplayer->track[i].size
= vcdinfo_get_track_sect_count(p_vcdinfo, i_track);
p_vcdplayer->track[i].start_LSN
= vcdinfo_get_track_lsn(p_vcdinfo, i_track);
}
} else
p_vcdplayer->track = NULL;
if ( 0 < (p_vcdplayer->i_entries = vcdinfo_get_num_entries(p_vcdinfo)) ) {
p_vcdplayer->entry = (vcdplayer_play_item_info_t *)
calloc(p_vcdplayer->i_entries, sizeof(vcdplayer_play_item_info_t));
for (i=0; i<p_vcdplayer->i_entries; i++) {
p_vcdplayer->entry[i].size
= vcdinfo_get_entry_sect_count(p_vcdinfo, i);
p_vcdplayer->entry[i].start_LSN
= vcdinfo_get_entry_lsn(p_vcdinfo, i);
}
} else
p_vcdplayer->entry = NULL;
if ( 0 < (p_vcdplayer->i_segments = vcdinfo_get_num_segments(p_vcdinfo)) ) {
p_vcdplayer->segment = (vcdplayer_play_item_info_t *)
calloc(p_vcdplayer->i_segments, sizeof(vcdplayer_play_item_info_t));
for (i=0; i<p_vcdplayer->i_segments; i++) {
p_vcdplayer->segment[i].size
= vcdinfo_get_seg_sector_count(p_vcdinfo, i);
p_vcdplayer->segment[i].start_LSN
= vcdinfo_get_seg_lsn(p_vcdinfo, i);
}
} else
p_vcdplayer->segment = NULL;
return true;
}
/*!
seek position, return new position
if seeking failed, -1 is returned
*/
off_t
vcdio_seek (vcdplayer_t *p_vcdplayer, off_t offset, int origin)
{
switch (origin) {
case SEEK_SET:
{
lsn_t old_lsn = p_vcdplayer->i_lsn;
p_vcdplayer->i_lsn = p_vcdplayer->origin_lsn + (offset / M2F2_SECTOR_SIZE);
dbg_print(INPUT_DBG_SEEK_SET, "seek_set to %ld => %u (start is %u)\n",
(long int) offset, p_vcdplayer->i_lsn, p_vcdplayer->origin_lsn);
/* Seek was successful. Invalidate entry location by setting
entry number back to 1. Over time it will adjust upward
to the correct value. */
if ( !vcdplayer_pbc_is_on(p_vcdplayer)
&& p_vcdplayer->play_item.type != VCDINFO_ITEM_TYPE_TRACK
&& p_vcdplayer->i_lsn < old_lsn) {
dbg_print(INPUT_DBG_SEEK_SET, "seek_set entry backwards\n");
p_vcdplayer->next_entry = 1;
}
break;
}
case SEEK_CUR:
{
off_t diff;
if (offset) {
LOG_ERR(p_vcdplayer, "%s: %d\n",
_("SEEK_CUR not implemented for non-zero offset"),
(int) offset);
return (off_t) -1;
}
if (p_vcdplayer->slider_length == VCDPLAYER_SLIDER_LENGTH_TRACK) {
diff = p_vcdplayer->i_lsn - p_vcdplayer->track_lsn;
dbg_print(INPUT_DBG_SEEK_CUR,
"current pos: %u, track diff %ld\n",
p_vcdplayer->i_lsn, (long int) diff);
} else {
diff = p_vcdplayer->i_lsn - p_vcdplayer->origin_lsn;
dbg_print(INPUT_DBG_SEEK_CUR,
"current pos: %u, entry diff %ld\n",
p_vcdplayer->i_lsn, (long int) diff);
}
if (diff < 0) {
dbg_print(INPUT_DBG_SEEK_CUR, "Error: diff < 0\n");
return (off_t) 0;
} else {
return (off_t)diff * M2F2_SECTOR_SIZE;
}
break;
}
case SEEK_END:
LOG_ERR(p_vcdplayer, "%s\n", _("SEEK_END not implemented yet."));
return (off_t) -1;
default:
LOG_ERR(p_vcdplayer, "%s %d\n", _("seek not implemented yet for"),
origin);
return (off_t) -1;
}
return offset ; /* FIXME */
}
/*
* Local variables:
* c-file-style: "gnu"
* tab-width: 8
* indent-tabs-mode: nil
* End:
*/
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