668 lines
15 KiB
C
668 lines
15 KiB
C
/* -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 8; -*- */
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#include <stdio.h>
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#include <assert.h>
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#include <unistd.h>
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#include <string.h>
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#include "error.h"
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#include "options.h"
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#include "transport.h"
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#include "libburn.h"
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#include "drive.h"
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#include "sector.h"
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#include "crc.h"
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#include "debug.h"
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#include "lec.h"
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#include "toc.h"
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#include "write.h"
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/*static unsigned char isrc[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";*/
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#define sector_common(X) d->alba++; d->rlba X;
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static void uncook_subs(unsigned char *dest, unsigned char *source)
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{
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int i, j, code;
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memset(dest, 0, 96);
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for (i = 0; i < 12; i++) {
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for (j = 0; j < 8; j++) {
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for (code = 0; code < 8; code++) {
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if (source[code * 12 + i] & 0x80)
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dest[j + i * 8] |= (1 << (7 - code));
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source[code * 12 + i] <<= 1;
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}
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}
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}
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}
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/* @return >=0 : valid , <0 invalid */
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int sector_get_outmode(enum burn_write_types write_type,
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enum burn_block_types block_type)
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{
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if (write_type == BURN_WRITE_SAO)
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return 0;
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else
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switch (block_type) {
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case BURN_BLOCK_RAW0:
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return BURN_MODE_RAW;
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case BURN_BLOCK_RAW16:
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return BURN_MODE_RAW | BURN_SUBCODE_P16;
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case BURN_BLOCK_RAW96P:
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return BURN_MODE_RAW | BURN_SUBCODE_P96;
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case BURN_BLOCK_RAW96R:
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return BURN_MODE_RAW | BURN_SUBCODE_R96;
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case BURN_BLOCK_MODE1:
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return BURN_MODE1;
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default:
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return -1;
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}
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/* ts A61007 : now handled in burn_write_opts_set_write_type() */
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/* a ssert(0); */ /* return BURN_MODE_UNIMPLEMENTED :) */
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}
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/* 0 means "same as inmode" */
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static int get_outmode(struct burn_write_opts *o)
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{
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/* ts A61007 */
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return sector_get_outmode(o->write_type, o->block_type);
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/* -1 is prevented by check in burn_write_opts_set_write_type() */
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/* a ssert(0); */ /* return BURN_MODE_UNIMPLEMENTED :) */
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}
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static void get_bytes(struct burn_track *track, int count, unsigned char *data)
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{
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int valid, shortage, curr;
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/* no track pointer means we're just generating 0s */
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if (!track) {
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memset(data, 0, count);
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return;
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}
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/* first we use up any offset */
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valid = track->offset - track->offsetcount;
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if (valid > count)
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valid = count;
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if (valid) {
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track->offsetcount += valid;
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memset(data, 0, valid);
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}
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shortage = count - valid;
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if (!shortage)
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return;
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/* Next we use source data */
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curr = valid;
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if (!track->eos) {
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valid = track->source->read(track->source, data + curr, count - curr);
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} else valid = 0;
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if (valid == -1) {
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track->eos = 1;
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valid = 0;
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}
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curr += valid;
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shortage = count - curr;
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if (!shortage)
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return;
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/* Before going to the next track, we run through any tail */
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valid = track->tail - track->tailcount;
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if (valid > count - curr)
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valid = count - curr;
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if (valid) {
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track->tailcount += valid;
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memset(data + curr, 0, valid);
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}
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curr += valid;
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shortage -= valid;
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if (!shortage)
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return;
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/* If we're still short, and there's a "next" pointer, we pull from that.
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if that depletes, we'll just fill with 0s.
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*/
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if (track->source->next) {
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struct burn_source *src;
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printf("pulling from next track\n");
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src = track->source->next;
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valid = src->read(src, data + curr, shortage);
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if (valid > 0) {
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shortage -= valid;
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curr += valid;
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}
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}
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if (!shortage)
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return;
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memset(data + curr, 0, shortage);
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}
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static unsigned char *get_sector(struct burn_write_opts *opts, int inmode)
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{
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struct burn_drive *d = opts->drive;
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struct buffer *out = d->buffer;
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int outmode;
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int seclen;
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unsigned char *ret;
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outmode = get_outmode(opts);
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if (outmode == 0)
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outmode = inmode;
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seclen = burn_sector_length(outmode) + burn_subcode_length(outmode);
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if (out->bytes + (seclen) >= BUFFER_SIZE) {
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int err;
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err = d->write(d, d->nwa, out);
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if (err == BE_CANCELLED)
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return NULL;
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d->nwa += out->sectors;
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out->bytes = 0;
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out->sectors = 0;
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}
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ret = out->data + out->bytes;
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out->bytes += seclen;
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out->sectors++;
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return ret;
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}
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/* either inmode == outmode, or outmode == raw. anything else is bad news */
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static void convert_data(struct burn_write_opts *o, struct burn_track *track,
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int inmode, unsigned char *data)
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{
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int outlen, inlen;
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int offset = -1;
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int outmode;
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outmode = get_outmode(o);
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if (outmode == 0)
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outmode = inmode;
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outlen = burn_sector_length(outmode);
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inlen = burn_sector_length(inmode);
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assert(outlen >= inlen);
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if ((outmode & BURN_MODE_BITS) == (inmode & BURN_MODE_BITS)) {
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get_bytes(track, inlen, data);
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return;
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}
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assert(outmode & BURN_MODE_RAW);
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if (inmode & BURN_MODE1)
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offset = 16;
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if (inmode & BURN_MODE_RAW)
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offset = 0;
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if (inmode & BURN_AUDIO)
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offset = 0;
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assert(offset != -1);
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get_bytes(track, inlen, data + offset);
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}
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static void convert_subs(struct burn_write_opts *o, int inmode,
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unsigned char *subs, unsigned char *sector)
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{
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unsigned char *out;
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int outmode;
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outmode = get_outmode(o);
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if (outmode == 0)
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outmode = inmode;
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sector += burn_sector_length(outmode);
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/* XXX for sao with subs, we'd need something else... */
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switch (o->block_type) {
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case BURN_BLOCK_RAW96R:
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uncook_subs(sector, subs);
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break;
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case BURN_BLOCK_RAW16:
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memcpy(sector, subs + 12, 12);
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out = sector + 12;
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out[0] = 0;
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out[1] = 0;
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out[2] = 0;
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/*XXX find a better way to deal with partially damaged P channels*/
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if (subs[2] != 0)
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out[3] = 0x80;
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else
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out[3] = 0;
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out = sector + 10;
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out[0] = ~out[0];
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out[1] = ~out[1];
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break;
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}
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}
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static void subcode_toc(struct burn_drive *d, int mode, unsigned char *data)
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{
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unsigned char *q;
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int track;
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int crc;
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int min, sec, frame;
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track = d->toc_temp / 3;
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memset(data, 0, 96);
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q = data + 12;
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burn_lba_to_msf(d->rlba, &min, &sec, &frame);
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/*XXX track numbers are BCD
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a0 - 1st track ctrl
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a1 - last track ctrl
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a2 - lout ctrl
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*/
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q[0] = (d->toc_entry[track].control << 4) + 1;
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q[1] = 0;
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if (d->toc_entry[track].point < 100)
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q[2] = dec_to_bcd(d->toc_entry[track].point);
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else
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q[2] = d->toc_entry[track].point;
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q[3] = dec_to_bcd(min);
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q[4] = dec_to_bcd(sec);
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q[5] = dec_to_bcd(frame);
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q[6] = 0;
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q[7] = dec_to_bcd(d->toc_entry[track].pmin);
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q[8] = dec_to_bcd(d->toc_entry[track].psec);
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q[9] = dec_to_bcd(d->toc_entry[track].pframe);
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crc = crc_ccitt(q, 10);
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q[10] = crc >> 8;
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q[11] = crc & 0xFF;
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d->toc_temp++;
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d->toc_temp %= (d->toc_entries * 3);
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}
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int sector_toc(struct burn_write_opts *o, int mode)
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{
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struct burn_drive *d = o->drive;
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unsigned char *data;
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unsigned char subs[96];
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data = get_sector(o, mode);
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if (!data)
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return 0;
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convert_data(o, NULL, mode, data);
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subcode_toc(d, mode, subs);
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convert_subs(o, mode, subs, data);
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sector_headers(o, data, mode, 1);
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sector_common(++)
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return 1;
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}
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int sector_pregap(struct burn_write_opts *o,
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unsigned char tno, unsigned char control, int mode)
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{
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struct burn_drive *d = o->drive;
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unsigned char *data;
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unsigned char subs[96];
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data = get_sector(o, mode);
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if (!data)
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return 0;
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convert_data(o, NULL, mode, data);
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subcode_user(o, subs, tno, control, 0, NULL, 1);
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convert_subs(o, mode, subs, data);
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sector_headers(o, data, mode, 0);
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sector_common(--)
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return 1;
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}
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int sector_postgap(struct burn_write_opts *o,
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unsigned char tno, unsigned char control, int mode)
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{
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struct burn_drive *d = o->drive;
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unsigned char subs[96];
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unsigned char *data;
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data = get_sector(o, mode);
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if (!data)
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return 0;
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convert_data(o, NULL, mode, data);
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/* use last index in track */
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subcode_user(o, subs, tno, control, 1, NULL, 1);
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convert_subs(o, mode, subs, data);
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sector_headers(o, data, mode, 0);
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sector_common(++)
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return 1;
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}
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static void subcode_lout(struct burn_write_opts *o, unsigned char control,
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unsigned char *data)
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{
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struct burn_drive *d = o->drive;
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unsigned char *q;
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int crc;
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int rmin, min, rsec, sec, rframe, frame;
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memset(data, 0, 96);
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q = data + 12;
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burn_lba_to_msf(d->alba, &min, &sec, &frame);
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burn_lba_to_msf(d->rlba, &rmin, &rsec, &rframe);
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if (((rmin == 0) && (rsec == 0) && (rframe == 0)) ||
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((rsec >= 2) && !((rframe / 19) % 2)))
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memset(data, 0xFF, 12);
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q[0] = (control << 4) + 1;
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q[1] = 0xAA;
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q[2] = 0x01;
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q[3] = dec_to_bcd(rmin);
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q[4] = dec_to_bcd(rsec);
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q[5] = dec_to_bcd(rframe);
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q[6] = 0;
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q[7] = dec_to_bcd(min);
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q[8] = dec_to_bcd(sec);
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q[9] = dec_to_bcd(frame);
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crc = crc_ccitt(q, 10);
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q[10] = crc >> 8;
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q[11] = crc & 0xFF;
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}
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static char char_to_isrc(char c)
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{
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if (c >= '0' && c <= '9')
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return c - '0';
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if (c >= 'A' && c <= 'Z')
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return 0x11 + (c - 'A');
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if (c >= 'a' && c <= 'z')
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return 0x11 + (c - 'a');
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/* ts A61008 : obsoleted by test in burn_track_set_isrc() */
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/* a ssert(0); */
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return 0;
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}
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void subcode_user(struct burn_write_opts *o, unsigned char *subcodes,
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unsigned char tno, unsigned char control,
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unsigned char indx, struct isrc *isrc, int psub)
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{
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struct burn_drive *d = o->drive;
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unsigned char *p, *q;
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int crc;
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int m, s, f, c, qmode; /* 1, 2 or 3 */
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memset(subcodes, 0, 96);
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p = subcodes;
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if ((tno == 1) && (d->rlba == -150))
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memset(p, 0xFF, 12);
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if (psub)
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memset(p, 0xFF, 12);
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q = subcodes + 12;
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qmode = 1;
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/* every 1 in 10 we can do something different */
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if (d->rlba % 10 == 0) {
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/* each of these can occur 1 in 100 */
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if ((d->rlba / 10) % 10 == 0) {
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if (o->has_mediacatalog)
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qmode = 2;
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} else if ((d->rlba / 10) % 10 == 1) {
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if (isrc && isrc->has_isrc)
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qmode = 3;
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}
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}
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assert(qmode == 1 || qmode == 2 || qmode == 3);
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switch (qmode) {
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case 1:
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q[1] = dec_to_bcd(tno); /* track number */
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q[2] = dec_to_bcd(indx); /* index XXX read this shit
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from the track array */
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burn_lba_to_msf(d->rlba, &m, &s, &f);
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q[3] = dec_to_bcd(m); /* rel min */
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q[4] = dec_to_bcd(s); /* rel sec */
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q[5] = dec_to_bcd(f); /* rel frame */
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q[6] = 0; /* zero */
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burn_lba_to_msf(d->alba, &m, &s, &f);
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q[7] = dec_to_bcd(m); /* abs min */
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q[8] = dec_to_bcd(s); /* abs sec */
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q[9] = dec_to_bcd(f); /* abs frame */
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break;
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case 2:
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/* media catalog number */
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q[1] = (o->mediacatalog[0] << 4) + o->mediacatalog[1];
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q[2] = (o->mediacatalog[2] << 4) + o->mediacatalog[3];
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q[3] = (o->mediacatalog[4] << 4) + o->mediacatalog[5];
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q[4] = (o->mediacatalog[6] << 4) + o->mediacatalog[7];
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q[5] = (o->mediacatalog[8] << 4) + o->mediacatalog[9];
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q[6] = (o->mediacatalog[10] << 4) + o->mediacatalog[11];
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q[7] = o->mediacatalog[12] << 4;
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q[8] = 0;
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burn_lba_to_msf(d->alba, &m, &s, &f);
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q[9] = dec_to_bcd(f); /* abs frame */
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break;
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case 3:
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c = char_to_isrc(isrc->country[0]);
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/* top 6 bits of [1] is the first country code */
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q[1] = c << 2;
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c = char_to_isrc(isrc->country[1]);
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/* bottom 2 bits of [1] is part of the second country code */
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q[1] += (c >> 4);
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/* top 4 bits if [2] is the rest of the second country code */
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q[2] = c << 4;
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c = char_to_isrc(isrc->owner[0]);
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/* bottom 4 bits of [2] is part of the first owner code */
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q[2] += (c >> 2);
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/* top 2 bits of [3] is the rest of the first owner code */
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q[3] = c << 6;
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c = char_to_isrc(isrc->owner[1]);
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/* bottom 6 bits of [3] is the entire second owner code */
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q[3] += c;
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c = char_to_isrc(isrc->owner[2]);
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/* top 6 bits of [4] are the third owner code */
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q[4] = c << 2;
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/* [5] is the year in 2 BCD numbers */
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q[5] = dec_to_bcd(isrc->year % 100);
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/* [6] is the first 2 digits in the serial */
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q[6] = dec_to_bcd(isrc->serial % 100);
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/* [7] is the next 2 digits in the serial */
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q[7] = dec_to_bcd((isrc->serial / 100) % 100);
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/* the top 4 bits of [8] is the last serial digit, the rest is
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zeros */
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q[8] = dec_to_bcd((isrc->serial / 10000) % 10) << 4;
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burn_lba_to_msf(d->alba, &m, &s, &f);
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q[9] = dec_to_bcd(f); /* abs frame */
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break;
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}
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q[0] = (control << 4) + qmode;
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crc = crc_ccitt(q, 10);
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q[10] = crc >> 8;
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q[11] = crc & 0xff;
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}
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int sector_lout(struct burn_write_opts *o, unsigned char control, int mode)
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{
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struct burn_drive *d = o->drive;
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unsigned char subs[96];
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unsigned char *data;
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data = get_sector(o, mode);
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if (!data)
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return 0;
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convert_data(o, NULL, mode, data);
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subcode_lout(o, control, subs);
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convert_subs(o, mode, subs, data);
|
|
sector_headers(o, data, mode, 0);
|
|
sector_common(++)
|
|
return 1;
|
|
}
|
|
|
|
int sector_data(struct burn_write_opts *o, struct burn_track *t, int psub)
|
|
{
|
|
struct burn_drive *d = o->drive;
|
|
unsigned char subs[96];
|
|
unsigned char *data;
|
|
|
|
data = get_sector(o, t->mode);
|
|
if (!data)
|
|
return 0;
|
|
convert_data(o, t, t->mode, data);
|
|
|
|
if (!t->source->read_sub)
|
|
subcode_user(o, subs, t->entry->point,
|
|
t->entry->control, 1, &t->isrc, psub);
|
|
else if (!t->source->read_sub(t->source, subs, 96))
|
|
subcode_user(o, subs, t->entry->point,
|
|
t->entry->control, 1, &t->isrc, psub);
|
|
convert_subs(o, t->mode, subs, data);
|
|
|
|
sector_headers(o, data, t->mode, 0);
|
|
sector_common(++)
|
|
return 1;
|
|
}
|
|
|
|
int burn_msf_to_lba(int m, int s, int f)
|
|
{
|
|
if (m < 90)
|
|
return (m * 60 + s) * 75 + f - 150;
|
|
else
|
|
return (m * 60 + s) * 75 + f - 450150;
|
|
}
|
|
|
|
void burn_lba_to_msf(int lba, int *m, int *s, int *f)
|
|
{
|
|
if (lba >= -150) {
|
|
*m = (lba + 150) / (60 * 75);
|
|
*s = (lba + 150 - *m * 60 * 75) / 75;
|
|
*f = lba + 150 - *m * 60 * 75 - *s * 75;
|
|
} else {
|
|
*m = (lba + 450150) / (60 * 75);
|
|
*s = (lba + 450150 - *m * 60 * 75) / 75;
|
|
*f = lba + 450150 - *m * 60 * 75 - *s * 75;
|
|
}
|
|
}
|
|
|
|
int dec_to_bcd(int d)
|
|
{
|
|
int top, bottom;
|
|
|
|
top = d / 10;
|
|
bottom = d - (top * 10);
|
|
return (top << 4) + bottom;
|
|
}
|
|
|
|
void sector_headers(struct burn_write_opts *o, unsigned char *out,
|
|
int mode, int leadin)
|
|
{
|
|
struct burn_drive *d = o->drive;
|
|
unsigned int crc;
|
|
int min, sec, frame;
|
|
int modebyte = -1;
|
|
|
|
if (mode & BURN_AUDIO) /* no headers for "audio" */
|
|
return;
|
|
if (o->write_type == BURN_WRITE_SAO)
|
|
return;
|
|
if (mode & BURN_MODE1)
|
|
modebyte = 1;
|
|
|
|
assert(modebyte == 1);
|
|
|
|
out[0] = 0;
|
|
memset(out + 1, 0xFF, 10); /* sync */
|
|
out[11] = 0;
|
|
|
|
if (leadin) {
|
|
burn_lba_to_msf(d->rlba, &min, &sec, &frame);
|
|
out[12] = dec_to_bcd(min) + 0xA0;
|
|
out[13] = dec_to_bcd(sec);
|
|
out[14] = dec_to_bcd(frame);
|
|
out[15] = modebyte;
|
|
} else {
|
|
burn_lba_to_msf(d->alba, &min, &sec, &frame);
|
|
out[12] = dec_to_bcd(min);
|
|
out[13] = dec_to_bcd(sec);
|
|
out[14] = dec_to_bcd(frame);
|
|
out[15] = modebyte;
|
|
}
|
|
if (mode & BURN_MODE1) {
|
|
crc = crc_32(out, 2064);
|
|
out[2064] = crc & 0xFF;
|
|
crc >>= 8;
|
|
out[2065] = crc & 0xFF;
|
|
crc >>= 8;
|
|
out[2066] = crc & 0xFF;
|
|
crc >>= 8;
|
|
out[2067] = crc & 0xFF;
|
|
}
|
|
if (mode & BURN_MODE1) {
|
|
memset(out + 2068, 0, 8);
|
|
parity_p(out);
|
|
parity_q(out);
|
|
}
|
|
scramble(out);
|
|
}
|
|
|
|
#if 0
|
|
void process_q(struct burn_drive *d, unsigned char *q)
|
|
{
|
|
unsigned char i[5];
|
|
int mode;
|
|
|
|
mode = q[0] & 0xF;
|
|
/* burn_print(12, "mode: %d : ", mode);*/
|
|
switch (mode) {
|
|
case 1:
|
|
/* burn_print(12, "tno = %d : ", q[1]);
|
|
burn_print(12, "index = %d\n", q[2]);
|
|
*/
|
|
/* q[1] is the track number (starting at 1) q[2] is the index
|
|
number (starting at 0) */
|
|
#warning this is totally bogus
|
|
if (q[1] - 1 > 99)
|
|
break;
|
|
if (q[2] > d->toc->track[q[1] - 1].indices) {
|
|
burn_print(12, "new index at %d\n", d->alba);
|
|
d->toc->track[q[1] - 1].index[q[2]] = d->alba;
|
|
d->toc->track[q[1] - 1].indices++;
|
|
}
|
|
break;
|
|
case 2:
|
|
/* XXX dont ignore these */
|
|
break;
|
|
case 3:
|
|
/* burn_print(12, "ISRC data in mode 3 q\n");*/
|
|
i[0] = isrc[(q[1] << 2) >> 2];
|
|
/* burn_print(12, "0x%x 0x%x 0x%x 0x%x 0x%x\n", q[1], q[2], q[3], q[4], q[5]);
|
|
burn_print(12, "ISRC - %c%c%c%c%c\n", i[0], i[1], i[2], i[3], i[4]);
|
|
*/
|
|
break;
|
|
default:
|
|
assert(0);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* this needs more info. subs in the data? control/adr? */
|
|
#warning sector_identify needs to be written
|
|
int sector_identify(unsigned char *data)
|
|
{
|
|
scramble(data);
|
|
/*
|
|
check mode byte for 1 or 2
|
|
test parity to see if it's a valid sector
|
|
if invalid, return BURN_MODE_AUDIO;
|
|
else return mode byte (what about mode 2 formless? heh)
|
|
*/
|
|
return BURN_MODE1;
|
|
}
|