/*
$Id: nrg.c,v 1.24 2006/02/27 10:23:52 flameeyes Exp $
Copyright (C) 2003, 2004, 2005, 2006 Rocky Bernstein <rocky@panix.com>
Copyright (C) 2001, 2003 Herbert Valerio Riedel <hvr@gnu.org>
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
*/
/*! This code implements low-level access functions for the Nero native
CD-image format residing inside a disk file (*.nrg).
*/
#include "image.h"
#ifdef HAVE_STDIO_H
#include <stdio.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_GLOB_H
#include <glob.h>
#endif
#include <cdio/bytesex.h>
#include <cdio/ds.h>
#include <cdio/logging.h>
#include <cdio/util.h>
#include <cdio/version.h>
#include "cdio_assert.h"
#include "_cdio_stdio.h"
#include "nrg.h"
static const char _rcsid[] = "$Id: nrg.c,v 1.24 2006/02/27 10:23:52 flameeyes Exp $";
nero_id_t nero_id;
nero_dtype_t nero_dtype;
/* reader */
#define DEFAULT_CDIO_DEVICE "image.nrg"
/*
Link element of track structure as a linked list.
Possibly redundant with above track_info_t */
typedef struct {
uint32_t start_lsn;
uint32_t sec_count; /* Number of sectors in track. Does not
include pregap before next entry. */
uint64_t img_offset; /* Bytes offset from beginning of disk image file.*/
uint32_t blocksize; /* Number of bytes in a block */
} _mapping_t;
#define NEED_NERO_STRUCT
#include "image_common.h"
static bool parse_nrg (_img_private_t *env, const char *psz_cue_name,
const cdio_log_level_t log_level);
static lsn_t get_disc_last_lsn_nrg (void *p_user_data);
/* Updates internal track TOC, so we can later
simulate ioctl(CDROMREADTOCENTRY).
*/
static void
_register_mapping (_img_private_t *env, lsn_t start_lsn, uint32_t sec_count,
uint64_t img_offset, uint32_t blocksize,
track_format_t track_format, bool track_green)
{
const int track_num=env->gen.i_tracks;
track_info_t *this_track=&(env->tocent[env->gen.i_tracks]);
_mapping_t *_map = calloc(1, sizeof (_mapping_t));
_map->start_lsn = start_lsn;
_map->sec_count = sec_count;
_map->img_offset = img_offset;
_map->blocksize = blocksize;
if (!env->mapping) env->mapping = _cdio_list_new ();
_cdio_list_append (env->mapping, _map);
env->size = MAX (env->size, (start_lsn + sec_count));
/* Update *this_track and track_num. These structures are
in a sense redundant witht the obj->mapping list. Perhaps one
or the other can be eliminated.
*/
cdio_lba_to_msf (cdio_lsn_to_lba(start_lsn), &(this_track->start_msf));
this_track->start_lba = cdio_msf_to_lba(&this_track->start_msf);
this_track->track_num = track_num+1;
this_track->blocksize = blocksize;
if (env->is_cues)
this_track->datastart = img_offset;
else
this_track->datastart = 0;
if (track_green)
this_track->datastart += CDIO_CD_SUBHEADER_SIZE;
this_track->sec_count = sec_count;
this_track->track_format= track_format;
this_track->track_green = track_green;
switch (this_track->track_format) {
case TRACK_FORMAT_AUDIO:
this_track->blocksize = CDIO_CD_FRAMESIZE_RAW;
this_track->datasize = CDIO_CD_FRAMESIZE_RAW;
/*this_track->datastart = 0;*/
this_track->endsize = 0;
break;
case TRACK_FORMAT_CDI:
this_track->datasize=CDIO_CD_FRAMESIZE;
break;
case TRACK_FORMAT_XA:
if (track_green) {
this_track->blocksize = CDIO_CD_FRAMESIZE;
/*this_track->datastart = CDIO_CD_SYNC_SIZE + CDIO_CD_HEADER_SIZE;*/
this_track->datasize = M2RAW_SECTOR_SIZE;
this_track->endsize = 0;
} else {
/*this_track->datastart = CDIO_CD_SYNC_SIZE + CDIO_CD_HEADER_SIZE +
CDIO_CD_SUBHEADER_SIZE;*/
this_track->datasize = CDIO_CD_FRAMESIZE;
this_track->endsize = CDIO_CD_SYNC_SIZE + CDIO_CD_ECC_SIZE;
}
break;
case TRACK_FORMAT_DATA:
if (track_green) {
/*this_track->datastart = CDIO_CD_SYNC_SIZE + CDIO_CD_HEADER_SIZE;*/
this_track->datasize = CDIO_CD_FRAMESIZE;
this_track->endsize = CDIO_CD_EDC_SIZE + CDIO_CD_M1F1_ZERO_SIZE
+ CDIO_CD_ECC_SIZE;
} else {
/* Is the below correct? */
/*this_track->datastart = 0;*/
this_track->datasize = CDIO_CD_FRAMESIZE;
this_track->endsize = 0;
}
break;
default:
/*this_track->datasize=CDIO_CD_FRAMESIZE_RAW;*/
cdio_warn ("track %d has unknown format %d",
env->gen.i_tracks, this_track->track_format);
}
env->gen.i_tracks++;
cdio_debug ("start lsn: %lu sector count: %0lu -> %8ld (%08lx)",
(long unsigned int) start_lsn,
(long unsigned int) sec_count,
(long unsigned int) img_offset,
(long unsigned int) img_offset);
}
/*
Disk and track information for a Nero file are located at the end
of the file. This routine extracts that information.
FIXME: right now psz_nrg_name is not used. It will be in the future.
*/
static bool
parse_nrg (_img_private_t *p_env, const char *psz_nrg_name,
const cdio_log_level_t log_level)
{
long unsigned int footer_start;
long unsigned int size;
char *footer_buf = NULL;
size = cdio_stream_stat (p_env->gen.data_source);
if (-1 == size) return false;
{
_footer_t buf;
cdio_assert (sizeof (buf) == 12);
cdio_stream_seek (p_env->gen.data_source, size - sizeof (buf), SEEK_SET);
cdio_stream_read (p_env->gen.data_source, (void *) &buf, sizeof (buf), 1);
if (buf.v50.ID == UINT32_TO_BE (NERO_ID)) {
cdio_debug ("detected Nero version 5.0 (32-bit offsets) NRG magic");
footer_start = uint32_to_be (buf.v50.footer_ofs);
} else if (buf.v55.ID == UINT32_TO_BE (NER5_ID)) {
cdio_debug ("detected Nero version 5.5.x (64-bit offsets) NRG magic");
footer_start = uint64_from_be (buf.v55.footer_ofs);
} else {
cdio_log (log_level, "Image not recognized as either version 5.0 or "
"version 5.5.x-6.x type NRG");
return false;
}
cdio_debug (".NRG footer start = %ld, length = %ld",
(long) footer_start, (long) (size - footer_start));
cdio_assert ((size - footer_start) <= 4096);
footer_buf = calloc(1, size - footer_start);
cdio_stream_seek (p_env->gen.data_source, footer_start, SEEK_SET);
cdio_stream_read (p_env->gen.data_source, footer_buf,
size - footer_start, 1);
}
{
int pos = 0;
while (pos < size - footer_start) {
_chunk_t *chunk = (void *) (footer_buf + pos);
uint32_t opcode = UINT32_FROM_BE (chunk->id);
bool break_out = false;
switch (opcode) {
case CUES_ID: /* "CUES" Seems to have sector size 2336 and 150 sector
pregap seems to be included at beginning of image.
*/
case CUEX_ID: /* "CUEX" */
{
unsigned entries = UINT32_FROM_BE (chunk->len);
_cuex_array_t *_entries = (void *) chunk->data;
cdio_assert (p_env->mapping == NULL);
cdio_assert ( sizeof (_cuex_array_t) == 8 );
cdio_assert ( UINT32_FROM_BE (chunk->len) % sizeof(_cuex_array_t)
== 0 );
entries /= sizeof (_cuex_array_t);
if (CUES_ID == opcode) {
lsn_t lsn = UINT32_FROM_BE (_entries[0].lsn);
unsigned int idx;
unsigned int i = 0;
cdio_debug ("CUES type image detected" );
/* CUES LSN has 150 pregap include at beginning? -/
cdio_assert (lsn == 0?);
*/
p_env->is_cues = true; /* HACK alert. */
p_env->gen.i_tracks = 0;
p_env->gen.i_first_track = 1;
for (idx = 1; idx < entries-1; idx += 2, i++) {
lsn_t sec_count;
int cdte_format = _entries[idx].addr_ctrl / 16;
int cdte_ctrl = _entries[idx].type >> 4;
if ( COPY_PERMITTED & cdte_ctrl ) {
if (p_env) p_env->tocent[i].flags |= COPY_PERMITTED;
} else {
if (p_env) p_env->tocent[i].flags &= ~COPY_PERMITTED;
}
if ( PRE_EMPHASIS & cdte_ctrl ) {
if (p_env) p_env->tocent[i].flags |= PRE_EMPHASIS;
} else {
if (p_env) p_env->tocent[i].flags &= ~PRE_EMPHASIS;
}
if ( FOUR_CHANNEL_AUDIO & cdte_ctrl ) {
if (p_env) p_env->tocent[i].flags |= FOUR_CHANNEL_AUDIO;
} else {
if (p_env) p_env->tocent[i].flags &= ~FOUR_CHANNEL_AUDIO;
}
cdio_assert (_entries[idx].track == _entries[idx + 1].track);
/* lsn and sec_count*2 aren't correct, but it comes closer on the
single example I have: svcdgs.nrg
We are picking up the wrong fields and/or not interpreting
them correctly.
*/
switch (cdte_format) {
case 0:
lsn = UINT32_FROM_BE (_entries[idx].lsn);
break;
case 1:
{
#if 0
msf_t msf = (msf_t) _entries[idx].lsn;
lsn = cdio_msf_to_lsn(&msf);
#else
lsn = CDIO_INVALID_LSN;
#endif
cdio_log (log_level,
"untested (i.e. probably wrong) CUE MSF code");
break;
}
default:
lsn = CDIO_INVALID_LSN;
cdio_log(log_level,
"unknown cdte_format %d", cdte_format);
}
sec_count = UINT32_FROM_BE (_entries[idx + 1].lsn);
_register_mapping (p_env, lsn, sec_count*2,
(lsn+CDIO_PREGAP_SECTORS) * M2RAW_SECTOR_SIZE,
M2RAW_SECTOR_SIZE, TRACK_FORMAT_XA, true);
}
} else {
lsn_t lsn = UINT32_FROM_BE (_entries[0].lsn);
unsigned int idx;
unsigned int i = 0;
cdio_debug ("CUEX type image detected");
/* LSN must start at -150 (LBA 0)? */
cdio_assert (lsn == -150);
for (idx = 2; idx < entries; idx += 2, i++) {
lsn_t sec_count;
int cdte_format = _entries[idx].addr_ctrl >> 4;
int cdte_ctrl = _entries[idx].type >> 4;
if ( COPY_PERMITTED & cdte_ctrl ) {
if (p_env) p_env->tocent[i].flags |= COPY_PERMITTED;
} else {
if (p_env) p_env->tocent[i].flags &= ~COPY_PERMITTED;
}
if ( PRE_EMPHASIS & cdte_ctrl ) {
if (p_env) p_env->tocent[i].flags |= PRE_EMPHASIS;
} else {
if (p_env) p_env->tocent[i].flags &= ~PRE_EMPHASIS;
}
if ( FOUR_CHANNEL_AUDIO & cdte_ctrl ) {
if (p_env) p_env->tocent[i].flags |= FOUR_CHANNEL_AUDIO;
} else {
if (p_env) p_env->tocent[i].flags &= ~FOUR_CHANNEL_AUDIO;
}
/* extractnrg.pl has cdte_format for LBA's 0, and
for MSF 1. ???
FIXME: Should decode as appropriate for cdte_format.
*/
cdio_assert ( cdte_format == 0 || cdte_format == 1 );
cdio_assert (_entries[idx].track != _entries[idx + 1].track);
lsn = UINT32_FROM_BE (_entries[idx].lsn);
sec_count = UINT32_FROM_BE (_entries[idx + 1].lsn);
_register_mapping (p_env, lsn, sec_count - lsn,
(lsn + CDIO_PREGAP_SECTORS)*M2RAW_SECTOR_SIZE,
M2RAW_SECTOR_SIZE, TRACK_FORMAT_XA, true);
}
}
break;
}
case DAOX_ID: /* "DAOX" */
case DAOI_ID: /* "DAOI" */
{
track_format_t track_format;
int disc_mode;
/* We include an extra 0 byte so these can be used as C strings.*/
p_env->psz_mcn = calloc(1, CDIO_MCN_SIZE+1);
if (DAOX_ID == opcode) {
_daox_array_t *_entries = (void *) chunk->data;
disc_mode = _entries->_unknown[1];
p_env->dtyp = _entries->_unknown[19];
memcpy(p_env->psz_mcn, &(_entries->psz_mcn), CDIO_MCN_SIZE);
p_env->psz_mcn[CDIO_MCN_SIZE] = '\0';
} else {
_daoi_array_t *_entries = (void *) chunk->data;
disc_mode = _entries->_unknown[1];
p_env->dtyp = _entries->_unknown[19];
memcpy(p_env->psz_mcn, &(_entries->psz_mcn), CDIO_MCN_SIZE);
p_env->psz_mcn[CDIO_MCN_SIZE] = '\0';
}
p_env->is_dao = true;
cdio_debug ("DAO%c tag detected, track format %d, mode %x\n",
opcode==DAOX_ID ? 'X': 'I', p_env->dtyp, disc_mode);
switch (p_env->dtyp) {
case 0:
/* Mode 1 */
track_format = TRACK_FORMAT_DATA;
p_env->disc_mode = CDIO_DISC_MODE_CD_DATA;
break;
case 2:
/* Mode 2 form 1 */
disc_mode = 0;
track_format = TRACK_FORMAT_XA;
p_env->disc_mode = CDIO_DISC_MODE_CD_XA;
break;
case 3:
/* Mode 2 */
track_format = TRACK_FORMAT_XA;
p_env->disc_mode = CDIO_DISC_MODE_CD_XA; /* ?? */
break;
case 0x6:
/* Mode2 form mix */
track_format = TRACK_FORMAT_XA;
p_env->disc_mode = CDIO_DISC_MODE_CD_MIXED;
break;
case 0x20: /* ??? Mode2 form 2, Mode2 raw?? */
track_format = TRACK_FORMAT_XA;
p_env->disc_mode = CDIO_DISC_MODE_CD_XA; /* ??. */
break;
case 0x7:
track_format = TRACK_FORMAT_AUDIO;
p_env->disc_mode = CDIO_DISC_MODE_CD_DA;
break;
default:
cdio_log (log_level, "Unknown track format %x\n",
p_env->dtyp);
track_format = TRACK_FORMAT_AUDIO;
}
if (0 == disc_mode) {
int i;
for (i=0; i<p_env->gen.i_tracks; i++) {
cdtext_init (&(p_env->gen.cdtext_track[i]));
p_env->tocent[i].track_format= track_format;
p_env->tocent[i].datastart = 0;
p_env->tocent[i].track_green = false;
if (TRACK_FORMAT_AUDIO == track_format) {
p_env->tocent[i].blocksize = CDIO_CD_FRAMESIZE_RAW;
p_env->tocent[i].datasize = CDIO_CD_FRAMESIZE_RAW;
p_env->tocent[i].endsize = 0;
} else {
p_env->tocent[i].datasize = CDIO_CD_FRAMESIZE;
p_env->tocent[i].datastart = 0;
}
}
} else if (2 == disc_mode) {
int i;
for (i=0; i<p_env->gen.i_tracks; i++) {
cdtext_init (&(p_env->gen.cdtext_track[i]));
p_env->tocent[i].track_green = true;
p_env->tocent[i].track_format= track_format;
p_env->tocent[i].datasize = CDIO_CD_FRAMESIZE;
if (TRACK_FORMAT_XA == track_format) {
p_env->tocent[i].datastart = CDIO_CD_SYNC_SIZE
+ CDIO_CD_HEADER_SIZE + CDIO_CD_SUBHEADER_SIZE;
p_env->tocent[i].endsize = CDIO_CD_SYNC_SIZE
+ CDIO_CD_ECC_SIZE;
} else {
p_env->tocent[i].datastart = CDIO_CD_SYNC_SIZE
+ CDIO_CD_HEADER_SIZE;
p_env->tocent[i].endsize = CDIO_CD_EDC_SIZE
+ CDIO_CD_M1F1_ZERO_SIZE + CDIO_CD_ECC_SIZE;
}
}
} else if (0x20 == disc_mode) {
cdio_debug ("Mixed mode CD?\n");
} else {
/* Mixed mode CD */
cdio_log (log_level,
"Don't know if mode 1, mode 2 or mixed: %x\n",
disc_mode);
}
break;
}
case NERO_ID:
case NER5_ID:
cdio_error ("unexpected nrg magic ID NER%c detected",
opcode==NERO_ID ? 'O': '5');
free(footer_buf);
return false;
break;
case END1_ID: /* "END!" */
cdio_debug ("nrg end tag detected");
break_out = true;
break;
case ETNF_ID: /* "ETNF" */ {
unsigned entries = UINT32_FROM_BE (chunk->len);
_etnf_array_t *_entries = (void *) chunk->data;
cdio_assert (p_env->mapping == NULL);
cdio_assert ( sizeof (_etnf_array_t) == 20 );
cdio_assert ( UINT32_FROM_BE(chunk->len) % sizeof(_etnf_array_t)
== 0 );
entries /= sizeof (_etnf_array_t);
cdio_debug ("SAO type image (ETNF) detected");
{
int idx;
for (idx = 0; idx < entries; idx++) {
uint32_t _len = UINT32_FROM_BE (_entries[idx].length);
uint32_t _start = UINT32_FROM_BE (_entries[idx].start_lsn);
uint32_t _start2 = UINT32_FROM_BE (_entries[idx].start);
uint32_t track_mode= uint32_from_be (_entries[idx].type);
bool track_green = true;
track_format_t track_format = TRACK_FORMAT_XA;
uint16_t blocksize;
switch (track_mode) {
case 0:
/* Mode 1 */
track_format = TRACK_FORMAT_DATA;
track_green = false; /* ?? */
blocksize = CDIO_CD_FRAMESIZE;
p_env->disc_mode = CDIO_DISC_MODE_CD_DATA;
cdio_debug ("Format DATA, blocksize %u", CDIO_CD_FRAMESIZE);
break;
case 2:
/* Mode 2 form 1 */
track_format = TRACK_FORMAT_XA;
track_green = false; /* ?? */
blocksize = CDIO_CD_FRAMESIZE;
p_env->disc_mode = CDIO_DISC_MODE_CD_XA;
cdio_debug ("Format XA, blocksize %u", CDIO_CD_FRAMESIZE);
break;
case 3:
/* Mode 2 */
track_format = TRACK_FORMAT_XA;
track_green = true;
blocksize = M2RAW_SECTOR_SIZE;
p_env->disc_mode = CDIO_DISC_MODE_CD_XA; /* ?? */
cdio_debug ("Format XA, blocksize %u", M2RAW_SECTOR_SIZE);
break;
case 06:
/* Mode2 form mix */
track_format = TRACK_FORMAT_XA;
track_green = true;
blocksize = M2RAW_SECTOR_SIZE;
p_env->disc_mode = CDIO_DISC_MODE_CD_MIXED;
cdio_debug ("Format MIXED CD, blocksize %u", M2RAW_SECTOR_SIZE);
break;
case 0x20: /* ??? Mode2 form 2, Mode2 raw?? */
track_format = TRACK_FORMAT_XA;
track_green = true;
blocksize = M2RAW_SECTOR_SIZE;
p_env->disc_mode = CDIO_DISC_MODE_CD_XA; /* ??. */
cdio_debug ("Format MIXED CD, blocksize %u", M2RAW_SECTOR_SIZE);
break;
case 7:
track_format = TRACK_FORMAT_AUDIO;
track_green = false;
blocksize = CDIO_CD_FRAMESIZE_RAW;
p_env->disc_mode = CDIO_DISC_MODE_CD_DA;
cdio_debug ("Format CD_DA, blocksize %u", CDIO_CD_FRAMESIZE_RAW);
break;
default:
cdio_log (log_level,
"Don't know how to handle track mode (%lu)?",
(long unsigned int) track_mode);
free(footer_buf);
return false;
}
cdio_assert (_len % blocksize == 0);
_len /= blocksize;
cdio_assert (_start * blocksize == _start2);
_start += idx * CDIO_PREGAP_SECTORS;
_register_mapping (p_env, _start, _len, _start2, blocksize,
track_format, track_green);
}
}
break;
}
case ETN2_ID: { /* "ETN2", same as above, but with 64bit stuff instead */
unsigned entries = uint32_from_be (chunk->len);
_etn2_array_t *_entries = (void *) chunk->data;
cdio_assert (p_env->mapping == NULL);
cdio_assert (sizeof (_etn2_array_t) == 32);
cdio_assert (uint32_from_be (chunk->len) % sizeof (_etn2_array_t) == 0);
entries /= sizeof (_etn2_array_t);
cdio_debug ("SAO type image (ETN2) detected");
{
int idx;
for (idx = 0; idx < entries; idx++) {
uint32_t _len = uint64_from_be (_entries[idx].length);
uint32_t _start = uint32_from_be (_entries[idx].start_lsn);
uint32_t _start2 = uint64_from_be (_entries[idx].start);
uint32_t track_mode= uint32_from_be (_entries[idx].type);
bool track_green = true;
track_format_t track_format = TRACK_FORMAT_XA;
uint16_t blocksize;
switch (track_mode) {
case 0:
track_format = TRACK_FORMAT_DATA;
track_green = false; /* ?? */
blocksize = CDIO_CD_FRAMESIZE;
break;
case 2:
track_format = TRACK_FORMAT_XA;
track_green = false; /* ?? */
blocksize = CDIO_CD_FRAMESIZE;
break;
case 3:
track_format = TRACK_FORMAT_XA;
track_green = true;
blocksize = M2RAW_SECTOR_SIZE;
break;
case 7:
track_format = TRACK_FORMAT_AUDIO;
track_green = false;
blocksize = CDIO_CD_FRAMESIZE_RAW;
break;
default:
cdio_log (log_level,
"Don't know how to handle track mode (%lu)?",
(long unsigned int) track_mode);
free(footer_buf);
return false;
}
if (_len % blocksize != 0) {
cdio_log (log_level,
"length is not a multiple of blocksize "
"len %lu, size %d, rem %lu",
(long unsigned int) _len, blocksize,
(long unsigned int) _len % blocksize);
if (0 == _len % CDIO_CD_FRAMESIZE) {
cdio_log(log_level, "Adjusting blocksize to %d",
CDIO_CD_FRAMESIZE);
blocksize = CDIO_CD_FRAMESIZE;
} else if (0 == _len % M2RAW_SECTOR_SIZE) {
cdio_log(log_level,
"Adjusting blocksize to %d", M2RAW_SECTOR_SIZE);
blocksize = M2RAW_SECTOR_SIZE;
} else if (0 == _len % CDIO_CD_FRAMESIZE_RAW) {
cdio_log(log_level,
"Adjusting blocksize to %d", CDIO_CD_FRAMESIZE_RAW);
blocksize = CDIO_CD_FRAMESIZE_RAW;
}
}
_len /= blocksize;
if (_start * blocksize != _start2) {
cdio_log (log_level,
"%lu * %d != %lu",
(long unsigned int) _start, blocksize,
(long unsigned int) _start2);
if (_start * CDIO_CD_FRAMESIZE == _start2) {
cdio_log(log_level,
"Adjusting blocksize to %d", CDIO_CD_FRAMESIZE);
blocksize = CDIO_CD_FRAMESIZE;
} else if (_start * M2RAW_SECTOR_SIZE == _start2) {
cdio_log(log_level,
"Adjusting blocksize to %d", M2RAW_SECTOR_SIZE);
blocksize = M2RAW_SECTOR_SIZE;
} else if (_start * CDIO_CD_FRAMESIZE_RAW == _start2) {
cdio_log(log_level,
"Adjusting blocksize to %d", CDIO_CD_FRAMESIZE_RAW);
blocksize = CDIO_CD_FRAMESIZE_RAW;
}
}
_start += idx * CDIO_PREGAP_SECTORS;
_register_mapping (p_env, _start, _len, _start2, blocksize,
track_format, track_green);
}
}
break;
}
case SINF_ID: { /* "SINF" */
uint32_t *_sessions = (void *) chunk->data;
cdio_assert (UINT32_FROM_BE (chunk->len) == 4);
cdio_debug ("SINF: %lu sessions",
(long unsigned int) UINT32_FROM_BE (*_sessions));
}
break;
case MTYP_ID: { /* "MTYP" */
uint32_t *mtyp_p = (void *) chunk->data;
uint32_t mtyp = UINT32_FROM_BE (*mtyp_p);
cdio_assert (UINT32_FROM_BE (chunk->len) == 4);
cdio_debug ("MTYP: %lu",
(long unsigned int) UINT32_FROM_BE (*mtyp_p));
if (mtyp != MTYP_AUDIO_CD) {
cdio_log (log_level,
"Unknown MTYP value: %u", (unsigned int) mtyp);
}
p_env->mtyp = mtyp;
}
break;
case CDTX_ID: { /* "CD TEXT" */
cdio_log (log_level,
"Don't know how to handle CD TEXT yet" );
break;
}
default:
cdio_log (log_level,
"unknown tag %8.8x seen",
(unsigned int) UINT32_FROM_BE (chunk->id));
break;
}
if (break_out)
break;
pos += 8;
pos += UINT32_FROM_BE (chunk->len);
}
}
/* Fake out leadout track. */
/* Don't use get_disc_last_lsn_nrg since that will lead to recursion since
we haven't fully initialized things yet.
*/
cdio_lsn_to_msf (p_env->size, &p_env->tocent[p_env->gen.i_tracks].start_msf);
p_env->tocent[p_env->gen.i_tracks].start_lba = cdio_lsn_to_lba(p_env->size);
p_env->tocent[p_env->gen.i_tracks-1].sec_count =
cdio_lsn_to_lba(p_env->size - p_env->tocent[p_env->gen.i_tracks-1].start_lba);
p_env->gen.b_cdtext_init = true;
p_env->gen.b_cdtext_error = false;
p_env->gen.toc_init = true;
free(footer_buf);
return true;
}
/*!
Initialize image structures.
*/
static bool
_init_nrg (_img_private_t *p_env)
{
if (p_env->gen.init) {
cdio_error ("init called more than once");
return false;
}
if (!(p_env->gen.data_source = cdio_stdio_new (p_env->gen.source_name))) {
cdio_warn ("can't open nrg image file %s for reading",
p_env->gen.source_name);
return false;
}
p_env->psz_mcn = NULL;
p_env->disc_mode = CDIO_DISC_MODE_NO_INFO;
cdtext_init (&(p_env->gen.cdtext));
if ( !parse_nrg (p_env, p_env->gen.source_name, CDIO_LOG_WARN) ) {
cdio_warn ("image file %s is not a Nero image",
p_env->gen.source_name);
return false;
}
p_env->gen.init = true;
return true;
}
/*!
Reads into buf the next size bytes.
Returns -1 on error.
Would be libc's seek() but we have to adjust for the extra track header
information in each sector.
*/
static off_t
_lseek_nrg (void *p_user_data, off_t offset, int whence)
{
_img_private_t *p_env = p_user_data;
/* real_offset is the real byte offset inside the disk image
The number below was determined empirically.
*/
off_t real_offset= p_env->is_dao ? 0x4b000 : 0;
unsigned int i;
for (i=0; i<p_env->gen.i_tracks; i++) {
track_info_t *this_track=&(p_env->tocent[i]);
p_env->pos.index = i;
if ( (this_track->sec_count*this_track->datasize) >= offset) {
int blocks = offset / this_track->datasize;
int rem = offset % this_track->datasize;
int block_offset = blocks * this_track->blocksize;
real_offset += block_offset + rem;
p_env->pos.buff_offset = rem;
p_env->pos.lba += blocks;
break;
}
real_offset += this_track->sec_count*this_track->blocksize;
offset -= this_track->sec_count*this_track->datasize;
p_env->pos.lba += this_track->sec_count;
}
if (i==p_env->gen.i_tracks) {
cdio_warn ("seeking outside range of disk image");
return -1;
} else
real_offset += p_env->tocent[i].datastart;
return cdio_stream_seek(p_env->gen.data_source, real_offset, whence);
}
/*!
Reads into buf the next size bytes.
Returns -1 on error.
FIXME:
At present we assume a read doesn't cross sector or track
boundaries.
*/
static ssize_t
_read_nrg (void *p_user_data, void *buf, size_t size)
{
_img_private_t *p_env = p_user_data;
return cdio_stream_read(p_env->gen.data_source, buf, size, 1);
}
/*!
Get the size of the CD in logical block address (LBA) units.
@param p_cdio the CD object queried
@return the lsn. On error 0 or CDIO_INVALD_LSN.
*/
static lsn_t
get_disc_last_lsn_nrg (void *p_user_data)
{
_img_private_t *p_env = p_user_data;
return p_env->size;
}
/*!
Reads a single audio sector from CD device into data starting
from LSN.
*/
static driver_return_code_t
_read_audio_sectors_nrg (void *p_user_data, void *data, lsn_t lsn,
unsigned int nblocks)
{
_img_private_t *p_env = p_user_data;
CdioListNode_t *node;
if (lsn >= p_env->size)
{
cdio_warn ("trying to read beyond image size (%lu >= %lu)",
(long unsigned int) lsn, (long unsigned int) p_env->size);
return -1;
}
_CDIO_LIST_FOREACH (node, p_env->mapping) {
_mapping_t *_map = _cdio_list_node_data (node);
if (IN (lsn, _map->start_lsn, (_map->start_lsn + _map->sec_count - 1))) {
int ret;
long int img_offset = _map->img_offset;
img_offset += (lsn - _map->start_lsn) * CDIO_CD_FRAMESIZE_RAW;
ret = cdio_stream_seek (p_env->gen.data_source, img_offset,
SEEK_SET);
if (ret!=0) return ret;
ret = cdio_stream_read (p_env->gen.data_source, data,
CDIO_CD_FRAMESIZE_RAW, nblocks);
if (ret==0) return ret;
break;
}
}
if (!node) cdio_warn ("reading into pre gap (lsn %lu)",
(long unsigned int) lsn);
return 0;
}
static driver_return_code_t
_read_mode1_sector_nrg (void *p_user_data, void *data, lsn_t lsn,
bool b_form2)
{
_img_private_t *p_env = p_user_data;
char buf[CDIO_CD_FRAMESIZE_RAW] = { 0, };
CdioListNode_t *node;
if (lsn >= p_env->size)
{
cdio_warn ("trying to read beyond image size (%lu >= %lu)",
(long unsigned int) lsn, (long unsigned int) p_env->size);
return -1;
}
_CDIO_LIST_FOREACH (node, p_env->mapping) {
_mapping_t *_map = _cdio_list_node_data (node);
if (IN (lsn, _map->start_lsn, (_map->start_lsn + _map->sec_count - 1))) {
int ret;
long int img_offset = _map->img_offset;
img_offset += (lsn - _map->start_lsn) * _map->blocksize;
ret = cdio_stream_seek (p_env->gen.data_source, img_offset,
SEEK_SET);
if (ret!=0) return ret;
/* FIXME: Not completely sure the below is correct. */
ret = cdio_stream_read (p_env->gen.data_source,
(M2RAW_SECTOR_SIZE == _map->blocksize)
? (buf + CDIO_CD_SYNC_SIZE + CDIO_CD_HEADER_SIZE)
: buf,
_map->blocksize, 1);
if (ret==0) return ret;
break;
}
}
if (!node)
cdio_warn ("reading into pre gap (lsn %lu)", (long unsigned int) lsn);
memcpy (data, buf + CDIO_CD_SYNC_SIZE + CDIO_CD_HEADER_SIZE,
b_form2 ? M2RAW_SECTOR_SIZE: CDIO_CD_FRAMESIZE);
return 0;
}
/*!
Reads nblocks of mode2 sectors from cd device into data starting
from lsn.
*/
static driver_return_code_t
_read_mode1_sectors_nrg (void *p_user_data, void *data, lsn_t lsn,
bool b_form2, unsigned nblocks)
{
_img_private_t *p_env = p_user_data;
int i;
int retval;
unsigned int blocksize = b_form2 ? M2RAW_SECTOR_SIZE : CDIO_CD_FRAMESIZE;
for (i = 0; i < nblocks; i++) {
if ( (retval = _read_mode1_sector_nrg (p_env,
((char *)data) + (blocksize * i),
lsn + i, b_form2)) )
return retval;
}
return 0;
}
static driver_return_code_t
_read_mode2_sector_nrg (void *p_user_data, void *data, lsn_t lsn,
bool b_form2)
{
_img_private_t *p_env = p_user_data;
char buf[CDIO_CD_FRAMESIZE_RAW] = { 0, };
CdioListNode_t *node;
if (lsn >= p_env->size)
{
cdio_warn ("trying to read beyond image size (%lu >= %lu)",
(long unsigned int) lsn, (long unsigned int) p_env->size);
return -1;
}
_CDIO_LIST_FOREACH (node, p_env->mapping) {
_mapping_t *_map = _cdio_list_node_data (node);
if (IN (lsn, _map->start_lsn, (_map->start_lsn + _map->sec_count - 1))) {
int ret;
long int img_offset = _map->img_offset;
img_offset += (lsn - _map->start_lsn) * _map->blocksize;
ret = cdio_stream_seek (p_env->gen.data_source, img_offset,
SEEK_SET);
if (ret!=0) return ret;
ret = cdio_stream_read (p_env->gen.data_source,
(M2RAW_SECTOR_SIZE == _map->blocksize)
? (buf + CDIO_CD_SYNC_SIZE + CDIO_CD_HEADER_SIZE)
: buf,
_map->blocksize, 1);
if (ret==0) return ret;
break;
}
}
if (!node)
cdio_warn ("reading into pre gap (lsn %lu)", (long unsigned int) lsn);
if (b_form2)
memcpy (data, buf + CDIO_CD_SYNC_SIZE + CDIO_CD_HEADER_SIZE,
M2RAW_SECTOR_SIZE);
else
memcpy (data, buf + CDIO_CD_XA_SYNC_HEADER, CDIO_CD_FRAMESIZE);
return 0;
}
/*!
Reads nblocks of mode2 sectors from cd device into data starting
from lsn.
Returns 0 if no error.
*/
static driver_return_code_t
_read_mode2_sectors_nrg (void *p_user_data, void *data, lsn_t lsn,
bool b_form2, unsigned nblocks)
{
_img_private_t *p_env = p_user_data;
int i;
int retval;
unsigned int blocksize = b_form2 ? M2RAW_SECTOR_SIZE : CDIO_CD_FRAMESIZE;
for (i = 0; i < nblocks; i++) {
if ( (retval = _read_mode2_sector_nrg (p_env,
((char *)data) + (blocksize * i),
lsn + i, b_form2)) )
return retval;
}
return 0;
}
/*
Free memory resources associated with NRG object.
*/
static void
_free_nrg (void *p_user_data)
{
_img_private_t *p_env = p_user_data;
if (NULL == p_env) return;
if (NULL != p_env->mapping)
_cdio_list_free (p_env->mapping, true);
/* The remaining part of the image is like the other image drivers,
so free that in the same way. */
_free_image(p_user_data);
}
/*!
Eject media -- there's nothing to do here except free resources.
We always return 2.
*/
static driver_return_code_t
_eject_media_nrg(void *obj)
{
_free_nrg (obj);
return DRIVER_OP_UNSUPPORTED;
}
/*!
Return an array of strings giving possible NRG disk images.
*/
char **
cdio_get_devices_nrg (void)
{
char **drives = NULL;
unsigned int num_files=0;
#ifdef HAVE_GLOB_H
unsigned int i;
glob_t globbuf;
globbuf.gl_offs = 0;
glob("*.nrg", GLOB_DOOFFS, NULL, &globbuf);
for (i=0; i<globbuf.gl_pathc; i++) {
cdio_add_device_list(&drives, globbuf.gl_pathv[i], &num_files);
}
globfree(&globbuf);
#else
cdio_add_device_list(&drives, DEFAULT_CDIO_DEVICE, &num_files);
#endif /*HAVE_GLOB_H*/
cdio_add_device_list(&drives, NULL, &num_files);
return drives;
}
/*!
Return a string containing the default CD device.
*/
char *
cdio_get_default_device_nrg(void)
{
char **drives = cdio_get_devices_nrg();
char *drive = (drives[0] == NULL) ? NULL : strdup(drives[0]);
cdio_free_device_list(drives);
return drive;
}
static bool
get_hwinfo_nrg ( const CdIo *p_cdio, /*out*/ cdio_hwinfo_t *hw_info)
{
strncpy(hw_info->psz_vendor, "libcdio",
sizeof(hw_info->psz_vendor)-1);
hw_info->psz_vendor[sizeof(hw_info->psz_vendor)-1] = '\0';
strncpy(hw_info->psz_model, "Nero",
sizeof(hw_info->psz_model)-1);
hw_info->psz_model[sizeof(hw_info->psz_model)-1] = '\0';
strncpy(hw_info->psz_revision, CDIO_VERSION,
sizeof(hw_info->psz_revision)-1);
hw_info->psz_revision[sizeof(hw_info->psz_revision)-1] = '\0';
return true;
}
/*!
Return the number of tracks in the current medium.
CDIO_INVALID_TRACK is returned on error.
*/
static track_format_t
get_track_format_nrg(void *p_user_data, track_t track_num)
{
_img_private_t *p_env = p_user_data;
if (track_num > p_env->gen.i_tracks || track_num == 0)
return TRACK_FORMAT_ERROR;
if ( p_env->dtyp != DTYP_INVALID) {
switch (p_env->dtyp) {
case DTYP_MODE2_XA:
return TRACK_FORMAT_XA;
case DTYP_MODE1:
return TRACK_FORMAT_DATA;
default: ;
}
}
/*if ( MTYP_AUDIO_CD == p_env->mtyp) return TRACK_FORMAT_AUDIO; */
return p_env->tocent[track_num-1].track_format;
}
/*!
Return true if we have XA data (green, mode2 form1) or
XA data (green, mode2 form2). That is track begins:
sync - header - subheader
12 4 - 8
FIXME: there's gotta be a better design for this and get_track_format?
*/
static bool
_get_track_green_nrg(void *p_user_data, track_t track_num)
{
_img_private_t *p_env = p_user_data;
if (track_num > p_env->gen.i_tracks || track_num == 0)
return false;
if ( MTYP_AUDIO_CD == p_env->mtyp) return false;
return p_env->tocent[track_num-1].track_green;
}
/*!
Check that a NRG file is valid.
*/
bool
cdio_is_nrg(const char *psz_nrg)
{
_img_private_t env;
bool is_nrg = false;
if (psz_nrg == NULL) return false;
memset(&env, 0, sizeof(env));
if (!(env.gen.data_source = cdio_stdio_new (psz_nrg))) {
cdio_warn ("can't open nrg image file %s for reading", psz_nrg);
return false;
}
if (parse_nrg(&env, psz_nrg, CDIO_LOG_INFO)) {
is_nrg = true;
#ifdef ALSO_TEST_NAME
size_t psz_len;
psz_len = strlen(psz_nrg);
/* At least 4 characters needed for .nrg extension */
if ( psz_len < 4 ) return false;
is_nrg = strncasecmp( psz_nrg+(psz_len-3), "nrg", 3 ) == 0;
#endif
}
cdio_stdio_destroy(env.gen.data_source);
return is_nrg;
}
/*!
Initialization routine. This is the only thing that doesn't
get called via a function pointer. In fact *we* are the
ones to set that up.
*/
CdIo *
cdio_open_am_nrg (const char *psz_source_name, const char *psz_access_mode)
{
if (psz_access_mode != NULL && strcmp(psz_access_mode, "image"))
cdio_warn ("there is only one access mode for nrg. Arg %s ignored",
psz_access_mode);
return cdio_open_nrg(psz_source_name);
}
CdIo *
cdio_open_nrg (const char *psz_source)
{
CdIo *ret;
_img_private_t *_data;
cdio_funcs_t _funcs;
memset( &_funcs, 0, sizeof(_funcs) );
_funcs.eject_media = _eject_media_nrg;
_funcs.free = _free_nrg;
_funcs.get_arg = _get_arg_image;
_funcs.get_cdtext = get_cdtext_generic;
_funcs.get_devices = cdio_get_devices_nrg;
_funcs.get_default_device = cdio_get_default_device_nrg;
_funcs.get_disc_last_lsn = get_disc_last_lsn_nrg;
_funcs.get_discmode = _get_discmode_image;
_funcs.get_drive_cap = _get_drive_cap_image;
_funcs.get_first_track_num = _get_first_track_num_image;
_funcs.get_hwinfo = get_hwinfo_nrg;
_funcs.get_media_changed = get_media_changed_image;
_funcs.get_mcn = _get_mcn_image;
_funcs.get_num_tracks = _get_num_tracks_image;
_funcs.get_track_channels = get_track_channels_generic,
_funcs.get_track_copy_permit = get_track_copy_permit_image,
_funcs.get_track_format = get_track_format_nrg;
_funcs.get_track_green = _get_track_green_nrg;
_funcs.get_track_lba = NULL; /* Will use generic routine via msf */
_funcs.get_track_msf = _get_track_msf_image;
_funcs.get_track_preemphasis = get_track_preemphasis_generic,
_funcs.lseek = _lseek_nrg;
_funcs.read = _read_nrg;
_funcs.read_audio_sectors = _read_audio_sectors_nrg;
_funcs.read_data_sectors = read_data_sectors_image;
_funcs.read_mode1_sector = _read_mode1_sector_nrg;
_funcs.read_mode1_sectors = _read_mode1_sectors_nrg;
_funcs.read_mode2_sector = _read_mode2_sector_nrg;
_funcs.read_mode2_sectors = _read_mode2_sectors_nrg;
_funcs.run_mmc_cmd = NULL;
_funcs.set_arg = _set_arg_image;
_data = calloc(1, sizeof (_img_private_t));
_data->gen.init = false;
_data->gen.i_tracks = 0;
_data->mtyp = 0;
_data->dtyp = DTYP_INVALID;
_data->gen.i_first_track= 1;
_data->is_dao = false;
_data->is_cues = false; /* FIXME: remove is_cues. */
ret = cdio_new ((void *)_data, &_funcs);
if (ret == NULL) {
free(_data);
return NULL;
}
ret->driver_id = DRIVER_NRG;
_set_arg_image(_data, "source", (NULL == psz_source)
? DEFAULT_CDIO_DEVICE: psz_source);
_set_arg_image (_data, "access-mode", "Nero");
_data->psz_cue_name = strdup(_get_arg_image(_data, "source"));
if (!cdio_is_nrg(_data->psz_cue_name)) {
cdio_debug ("source name %s is not recognized as a NRG image",
_data->psz_cue_name);
_free_nrg(_data);
free(ret);
return NULL;
}
if (_init_nrg(_data))
return ret;
else {
_free_nrg(_data);
free(ret);
return NULL;
}
}
bool
cdio_have_nrg (void)
{
return true;
}
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