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-rw-r--r--lib/yazedc.cpp546
1 files changed, 273 insertions, 273 deletions
diff --git a/lib/yazedc.cpp b/lib/yazedc.cpp
index 6350ef7..100cd38 100644
--- a/lib/yazedc.cpp
+++ b/lib/yazedc.cpp
@@ -1,273 +1,273 @@
-/*
- * PSX-Tools Bundle Pack
- * Copyright (C) 1998 Heiko Eissfeldt
- * portions used& Chris Smith
- * Modified by Yazoo, then by
- * Nicolas "Pixel" Noble
- *
- * 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
- */
-
-/* $Id: yazedc.cpp,v 1.3 2003-12-04 01:47:37 pixel Exp $ */
-
-#include <stdio.h>
-#include <string.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "yazedc.h"
-
-yazedc::yazedc() : minute(0), second(2), frame(0), sectortype(0) {}
-
-/* ------------- tables generated by gen_encodes --------------*/
-
-#include "crctables"
-
-static int encode_L2_Q(unsigned char inout[4 + L2_RAW + 4 + 8 + L2_P + L2_Q])
-{
- unsigned char *Q;
- int i,j;
-
- Q = inout + 4 + L2_RAW + 4 + 8 + L2_P;
- memset(Q, 0, L2_Q);
- for (j = 0; j < 26; j++) {
- for (i = 0; i < 43; i++) {
- unsigned char data;
-
- /* LSB */
- data = inout[(j*43*2+i*2*44) % (4 + L2_RAW + 4 + 8 + L2_P)];
- if (data != 0) {
- unsigned int base = rs_l12_log[data];
-
- unsigned int sum = base + DQ[0][i];
- if (sum >= ((1 << RS_L12_BITS)-1))
- sum -= (1 << RS_L12_BITS)-1;
-
- Q[0] ^= rs_l12_alog[sum];
-
- sum = base + DQ[1][i];
- if (sum >= ((1 << RS_L12_BITS)-1))
- sum -= (1 << RS_L12_BITS)-1;
-
- Q[26*2] ^= rs_l12_alog[sum];
- }
- /* MSB */
- data = inout[(j*43*2+i*2*44+1) % (4 + L2_RAW + 4 + 8 + L2_P)];
- if (data != 0) {
- unsigned int base = rs_l12_log[data];
-
- unsigned int sum = base+DQ[0][i];
- if (sum >= ((1 << RS_L12_BITS)-1))
- sum -= (1 << RS_L12_BITS)-1;
-
- Q[1] ^= rs_l12_alog[sum];
-
- sum = base + DQ[1][i];
- if (sum >= ((1 << RS_L12_BITS)-1))
- sum -= (1 << RS_L12_BITS)-1;
-
- Q[26*2+1] ^= rs_l12_alog[sum];
- }
- }
- Q += 2;
- }
- return 0;
-}
-
-static int encode_L2_P(unsigned char inout[4 + L2_RAW + 4 + 8 + L2_P])
-{
- unsigned char *P;
- int i,j;
-
- P = inout + 4 + L2_RAW + 4 + 8;
- memset(P, 0, L2_P);
- for (j = 0; j < 43; j++) {
- for (i = 0; i < 24; i++) {
- unsigned char data;
-
- /* LSB */
- data = inout[i*2*43];
- if (data != 0) {
- unsigned int base = rs_l12_log[data];
-
- unsigned int sum = base + DP[0][i];
- if (sum >= ((1 << RS_L12_BITS)-1))
- sum -= (1 << RS_L12_BITS)-1;
-
- P[0] ^= rs_l12_alog[sum];
-
- sum = base + DP[1][i];
- if (sum >= ((1 << RS_L12_BITS)-1))
- sum -= (1 << RS_L12_BITS)-1;
-
- P[43*2] ^= rs_l12_alog[sum];
- }
- /* MSB */
- data = inout[i*2*43+1];
- if (data != 0) {
- unsigned int base = rs_l12_log[data];
-
- unsigned int sum = base + DP[0][i];
- if (sum >= ((1 << RS_L12_BITS)-1))
- sum -= (1 << RS_L12_BITS)-1;
-
- P[1] ^= rs_l12_alog[sum];
-
- sum = base + DP[1][i];
- if (sum >= ((1 << RS_L12_BITS)-1))
- sum -= (1 << RS_L12_BITS)-1;
-
- P[43*2+1] ^= rs_l12_alog[sum];
- }
- }
- P += 2;
- inout += 2;
- }
- return 0;
-}
-
-int yazedc::scramble_L2(unsigned char *inout)
-{
- unsigned char *r = inout + 12;
- const unsigned char *s = yellowbook_scrambler;
- unsigned int i;
- unsigned int *f = (unsigned int *)inout;
-
- for (i = (L2_RAW + L2_Q + L2_P +16)/sizeof(unsigned char); i; i--) {
- *r++ ^= *s++;
- }
-
- /* generate F1 frames */
- for (i = (2352/sizeof(unsigned int)); i; i--) {
- *f++ = ((*f & 0xff00ff00UL) >> 8) | ((*f & 0x00ff00ffUL) << 8);
- }
-
- return 0;
-}
-
-int yazedc::build_address(unsigned char inout[], int sectortype, unsigned address)
-{
- inout[12] = minute;
- inout[13] = second;
- inout[14] = frame;
- if (sectortype == MODE_0)
- inout[15] = 0;
- else if (sectortype == MODE_1)
- inout[15] = 1;
- else if (sectortype == MODE_2)
- inout[15] = 2;
- else if (sectortype == MODE_2_FORM_1)
- inout[15] = 2;
- else if (sectortype == MODE_2_FORM_2)
- inout[15] = 2;
- else
- return -1;
- return 0;
-}
-
-#include "crctable.out"
-unsigned long int build_edc(unsigned char inout[], int from, int upto)
-{
- unsigned char *p = inout+from;
- unsigned long result = 0;
-
- for (; from <= upto; from++)
- result = EDC_crctable[(result ^ *p++) & 0xffL] ^ (result >> 8);
-
- return result;
-}
-
-/* Layer 2 Product code en/decoder */
-int yazedc::do_encode_L2(unsigned char inout[(12 + 4 + L2_RAW+4+8+L2_Q+L2_P)], int sectortype, unsigned address)
-{
- unsigned long int result;
-
-#define SYNCPATTERN "\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
-
- /* supply initial sync pattern */
- memcpy(inout, SYNCPATTERN, sizeof(SYNCPATTERN));
-
- if (sectortype == MODE_0) {
- memset(inout + sizeof(SYNCPATTERN), 0, 4 + L2_RAW + 12 + L2_P + L2_Q);
- build_address(inout, sectortype, address);
- return 0;
- }
-
- switch (sectortype) {
- case MODE_1:
- build_address(inout, sectortype, address);
- result = build_edc(inout, 0, 16+2048-1);
- inout[2064+0] = result >> 0L;
- inout[2064+1] = result >> 8L;
- inout[2064+2] = result >> 16L;
- inout[2064+3] = result >> 24L;
- memset(inout+2064+4, 0, 8);
- encode_L2_P(inout+12);
- encode_L2_Q(inout+12);
- break;
- case MODE_2:
- build_address(inout, sectortype, address);
- break;
- case MODE_2_FORM_1:
- result = build_edc(inout, 16, 16+8+2048-1);
- inout[2072+0] = result >> 0L;
- inout[2072+1] = result >> 8L;
- inout[2072+2] = result >> 16L;
- inout[2072+3] = result >> 24L;
-
- /* clear header for P/Q parity calculation */
- inout[12] = 0;
- inout[12+1] = 0;
- inout[12+2] = 0;
- inout[12+3] = 0;
- encode_L2_P(inout+12);
- encode_L2_Q(inout+12);
- build_address(inout, sectortype, address);
- break;
- case MODE_2_FORM_2:
- build_address(inout, sectortype, address);
- result = build_edc(inout, 16, 16+8+2324-1);
- inout[2348+0] = result >> 0L;
- inout[2348+1] = result >> 8L;
- inout[2348+2] = result >> 16L;
- inout[2348+3] = result >> 24L;
- break;
- default:
- return -1;
- }
-
- return 0;
-}
-
-int yazedc::get_sector_type(void)
-{
- return sectortype;
-}
-
-int yazedc::set_sector_type(int st)
-{
- switch(st) {
- case MODE_0:
- case MODE_1:
- case MODE_2:
- case MODE_2_FORM_1:
- case MODE_2_FORM_2:
- sectortype = st;
- default:
- return -1;
- }
- return 0;
-}
+/*
+ * PSX-Tools Bundle Pack
+ * Copyright (C) 1998 Heiko Eissfeldt
+ * portions used& Chris Smith
+ * Modified by Yazoo, then by
+ * Nicolas "Pixel" Noble
+ *
+ * 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
+ */
+
+/* $Id: yazedc.cpp,v 1.4 2004-11-27 21:44:48 pixel Exp $ */
+
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "yazedc.h"
+
+yazedc::yazedc() : minute(0), second(2), frame(0), sectortype(0) {}
+
+/* ------------- tables generated by gen_encodes --------------*/
+
+#include "crctables"
+
+static int encode_L2_Q(unsigned char inout[4 + L2_RAW + 4 + 8 + L2_P + L2_Q])
+{
+ unsigned char *Q;
+ int i,j;
+
+ Q = inout + 4 + L2_RAW + 4 + 8 + L2_P;
+ memset(Q, 0, L2_Q);
+ for (j = 0; j < 26; j++) {
+ for (i = 0; i < 43; i++) {
+ unsigned char data;
+
+ /* LSB */
+ data = inout[(j*43*2+i*2*44) % (4 + L2_RAW + 4 + 8 + L2_P)];
+ if (data != 0) {
+ unsigned int base = rs_l12_log[data];
+
+ unsigned int sum = base + DQ[0][i];
+ if (sum >= ((1 << RS_L12_BITS)-1))
+ sum -= (1 << RS_L12_BITS)-1;
+
+ Q[0] ^= rs_l12_alog[sum];
+
+ sum = base + DQ[1][i];
+ if (sum >= ((1 << RS_L12_BITS)-1))
+ sum -= (1 << RS_L12_BITS)-1;
+
+ Q[26*2] ^= rs_l12_alog[sum];
+ }
+ /* MSB */
+ data = inout[(j*43*2+i*2*44+1) % (4 + L2_RAW + 4 + 8 + L2_P)];
+ if (data != 0) {
+ unsigned int base = rs_l12_log[data];
+
+ unsigned int sum = base+DQ[0][i];
+ if (sum >= ((1 << RS_L12_BITS)-1))
+ sum -= (1 << RS_L12_BITS)-1;
+
+ Q[1] ^= rs_l12_alog[sum];
+
+ sum = base + DQ[1][i];
+ if (sum >= ((1 << RS_L12_BITS)-1))
+ sum -= (1 << RS_L12_BITS)-1;
+
+ Q[26*2+1] ^= rs_l12_alog[sum];
+ }
+ }
+ Q += 2;
+ }
+ return 0;
+}
+
+static int encode_L2_P(unsigned char inout[4 + L2_RAW + 4 + 8 + L2_P])
+{
+ unsigned char *P;
+ int i,j;
+
+ P = inout + 4 + L2_RAW + 4 + 8;
+ memset(P, 0, L2_P);
+ for (j = 0; j < 43; j++) {
+ for (i = 0; i < 24; i++) {
+ unsigned char data;
+
+ /* LSB */
+ data = inout[i*2*43];
+ if (data != 0) {
+ unsigned int base = rs_l12_log[data];
+
+ unsigned int sum = base + DP[0][i];
+ if (sum >= ((1 << RS_L12_BITS)-1))
+ sum -= (1 << RS_L12_BITS)-1;
+
+ P[0] ^= rs_l12_alog[sum];
+
+ sum = base + DP[1][i];
+ if (sum >= ((1 << RS_L12_BITS)-1))
+ sum -= (1 << RS_L12_BITS)-1;
+
+ P[43*2] ^= rs_l12_alog[sum];
+ }
+ /* MSB */
+ data = inout[i*2*43+1];
+ if (data != 0) {
+ unsigned int base = rs_l12_log[data];
+
+ unsigned int sum = base + DP[0][i];
+ if (sum >= ((1 << RS_L12_BITS)-1))
+ sum -= (1 << RS_L12_BITS)-1;
+
+ P[1] ^= rs_l12_alog[sum];
+
+ sum = base + DP[1][i];
+ if (sum >= ((1 << RS_L12_BITS)-1))
+ sum -= (1 << RS_L12_BITS)-1;
+
+ P[43*2+1] ^= rs_l12_alog[sum];
+ }
+ }
+ P += 2;
+ inout += 2;
+ }
+ return 0;
+}
+
+int yazedc::scramble_L2(unsigned char *inout)
+{
+ unsigned char *r = inout + 12;
+ const unsigned char *s = yellowbook_scrambler;
+ unsigned int i;
+ unsigned int *f = (unsigned int *)inout;
+
+ for (i = (L2_RAW + L2_Q + L2_P +16)/sizeof(unsigned char); i; i--) {
+ *r++ ^= *s++;
+ }
+
+ /* generate F1 frames */
+ for (i = (2352/sizeof(unsigned int)); i; i--) {
+ *f++ = ((*f & 0xff00ff00UL) >> 8) | ((*f & 0x00ff00ffUL) << 8);
+ }
+
+ return 0;
+}
+
+int yazedc::build_address(unsigned char inout[], int sectortype, unsigned address)
+{
+ inout[12] = minute;
+ inout[13] = second;
+ inout[14] = frame;
+ if (sectortype == MODE_0)
+ inout[15] = 0;
+ else if (sectortype == MODE_1)
+ inout[15] = 1;
+ else if (sectortype == MODE_2)
+ inout[15] = 2;
+ else if (sectortype == MODE_2_FORM_1)
+ inout[15] = 2;
+ else if (sectortype == MODE_2_FORM_2)
+ inout[15] = 2;
+ else
+ return -1;
+ return 0;
+}
+
+#include "crctable.out"
+unsigned long int build_edc(unsigned char inout[], int from, int upto)
+{
+ unsigned char *p = inout+from;
+ unsigned long result = 0;
+
+ for (; from <= upto; from++)
+ result = EDC_crctable[(result ^ *p++) & 0xffL] ^ (result >> 8);
+
+ return result;
+}
+
+/* Layer 2 Product code en/decoder */
+int yazedc::do_encode_L2(unsigned char inout[(12 + 4 + L2_RAW+4+8+L2_Q+L2_P)], int sectortype, unsigned address)
+{
+ unsigned long int result;
+
+#define SYNCPATTERN "\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
+
+ /* supply initial sync pattern */
+ memcpy(inout, SYNCPATTERN, sizeof(SYNCPATTERN));
+
+ if (sectortype == MODE_0) {
+ memset(inout + sizeof(SYNCPATTERN), 0, 4 + L2_RAW + 12 + L2_P + L2_Q);
+ build_address(inout, sectortype, address);
+ return 0;
+ }
+
+ switch (sectortype) {
+ case MODE_1:
+ build_address(inout, sectortype, address);
+ result = build_edc(inout, 0, 16+2048-1);
+ inout[2064+0] = result >> 0L;
+ inout[2064+1] = result >> 8L;
+ inout[2064+2] = result >> 16L;
+ inout[2064+3] = result >> 24L;
+ memset(inout+2064+4, 0, 8);
+ encode_L2_P(inout+12);
+ encode_L2_Q(inout+12);
+ break;
+ case MODE_2:
+ build_address(inout, sectortype, address);
+ break;
+ case MODE_2_FORM_1:
+ result = build_edc(inout, 16, 16+8+2048-1);
+ inout[2072+0] = result >> 0L;
+ inout[2072+1] = result >> 8L;
+ inout[2072+2] = result >> 16L;
+ inout[2072+3] = result >> 24L;
+
+ /* clear header for P/Q parity calculation */
+ inout[12] = 0;
+ inout[12+1] = 0;
+ inout[12+2] = 0;
+ inout[12+3] = 0;
+ encode_L2_P(inout+12);
+ encode_L2_Q(inout+12);
+ build_address(inout, sectortype, address);
+ break;
+ case MODE_2_FORM_2:
+ build_address(inout, sectortype, address);
+ result = build_edc(inout, 16, 16+8+2324-1);
+ inout[2348+0] = result >> 0L;
+ inout[2348+1] = result >> 8L;
+ inout[2348+2] = result >> 16L;
+ inout[2348+3] = result >> 24L;
+ break;
+ default:
+ return -1;
+ }
+
+ return 0;
+}
+
+int yazedc::get_sector_type(void)
+{
+ return sectortype;
+}
+
+int yazedc::set_sector_type(int st)
+{
+ switch(st) {
+ case MODE_0:
+ case MODE_1:
+ case MODE_2:
+ case MODE_2_FORM_1:
+ case MODE_2_FORM_2:
+ sectortype = st;
+ default:
+ return -1;
+ }
+ return 0;
+}
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