claunia/libcdio-osx
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Try to make get_dvd_physical a common routine. (Haven't tested yet.)

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rocky
2004-07-26 03:58:25 +00:00
parent 1b15e56374
commit 50532e7025
6 changed files with 108 additions and 122 deletions
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78
lib/scsi_mmc.c
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@@ -1,6 +1,6 @@
/* Common SCSI Multimedia Command (MMC) routines.
$Id: scsi_mmc.c,v 1.9 2004/07/26 03:39:55 rocky Exp $
$Id: scsi_mmc.c,v 1.10 2004/07/26 03:58:25 rocky Exp $
Copyright (C) 2004 Rocky Bernstein <rocky@panix.com>
@@ -31,6 +31,10 @@
#include <string.h>
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
/*!
On input a MODE_SENSE command was issued and we have the results
in p. We interpret this and return a bit mask set according to the
@@ -227,3 +231,75 @@ scsi_mmc_set_bsize ( const CdIo *cdio, unsigned int bsize)
if ( ! cdio ) return -2;
return set_bsize_mmc (cdio->env, (&cdio->op.run_scsi_mmc_cmd), bsize);
}
/*!
Get the DVD type associated with cd object.
*/
discmode_t
get_dvd_struct_physical_mmc ( void *p_env,
const scsi_mmc_run_cmd_fn_t *run_scsi_mmc_cmd,
cdio_dvd_struct_t *s)
{
scsi_mmc_cdb_t cdb = {{0, }};
unsigned char buf[20], *base;
int i_status;
uint8_t layer_num = s->physical.layer_num;
cdio_dvd_layer_t *layer;
if ( ! p_env || ! run_scsi_mmc_cmd )
return -2;
if (layer_num >= CDIO_DVD_MAX_LAYERS)
return -EINVAL;
CDIO_MMC_SET_COMMAND(cdb.field, CDIO_MMC_GPCMD_READ_DVD_STRUCTURE);
cdb.field[6] = layer_num;
cdb.field[7] = CDIO_DVD_STRUCT_PHYSICAL;
cdb.field[9] = sizeof(buf) & 0xff;
i_status = (*run_scsi_mmc_cmd)(p_env, DEFAULT_TIMEOUT_MS,
scsi_mmc_get_cmd_len(cdb.field[0]),
&cdb, SCSI_MMC_DATA_READ,
sizeof(buf), &buf);
if (0 != i_status)
return CDIO_DISC_MODE_ERROR;
base = &buf[4];
layer = &s->physical.layer[layer_num];
/*
* place the data... really ugly, but at least we won't have to
* worry about endianess in userspace.
*/
memset(layer, 0, sizeof(*layer));
layer->book_version = base[0] & 0xf;
layer->book_type = base[0] >> 4;
layer->min_rate = base[1] & 0xf;
layer->disc_size = base[1] >> 4;
layer->layer_type = base[2] & 0xf;
layer->track_path = (base[2] >> 4) & 1;
layer->nlayers = (base[2] >> 5) & 3;
layer->track_density = base[3] & 0xf;
layer->linear_density = base[3] >> 4;
layer->start_sector = base[5] << 16 | base[6] << 8 | base[7];
layer->end_sector = base[9] << 16 | base[10] << 8 | base[11];
layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15];
layer->bca = base[16] >> 7;
return 0;
}
/*!
Get the DVD type associated with cd object.
*/
discmode_t
scsi_mmc_get_dvd_struct_physical ( const CdIo *p_cdio, cdio_dvd_struct_t *s)
{
if ( ! p_cdio ) return -2;
return get_dvd_struct_physical_mmc (p_cdio->env,
(&p_cdio->op.run_scsi_mmc_cmd),
s);
}