265 lines
6.3 KiB
C
265 lines
6.3 KiB
C
/* -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 8; -*- */
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#include <malloc.h>
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#include <unistd.h>
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#include <signal.h>
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#include <assert.h>
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include "sector.h"
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#include "libburn.h"
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#include "drive.h"
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#include "transport.h"
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#include "message.h"
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#include "crc.h"
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#include "debug.h"
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#include "init.h"
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#include "lec.h"
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#include "toc.h"
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#include "util.h"
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#include "sg.h"
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#include "read.h"
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#include "options.h"
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void burn_disc_read(struct burn_drive *d, const struct burn_read_opts *o)
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{
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#if 0
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int i, end, maxsects, finish;
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int seclen;
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int drive_lba;
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unsigned short crc;
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unsigned char fakesub[96];
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struct buffer page;
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int speed;
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assert((o->version & 0xfffff000) == (OPTIONS_VERSION & 0xfffff000));
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assert(!d->busy);
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assert(d->toc->valid);
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assert(o->datafd != -1);
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/* XXX not sure this is a good idea. copy it? */
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/* XXX also, we have duplicated data now, do we remove the fds from struct
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drive, or only store a subset of the _opts structs in drives */
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/* set the speed on the drive */
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speed = o->speed > 0 ? o->speed : d->mdata->max_read_speed;
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d->set_speed(d, speed, 0);
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d->params.retries = o->hardware_error_retries;
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d->send_parameters(d, o);
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d->cancel = 0;
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d->busy = BURN_DRIVE_READING;
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d->currsession = 0;
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/* drive_lba = 232000;
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d->currtrack = 18;
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*/
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d->currtrack = 0;
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drive_lba = 0;
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/* XXX removal of this line obviously breaks *
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d->track_end = burn_track_end(d, d->currsession, d->currtrack);*/
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printf("track ends at %d\n", d->track_end);
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page.sectors = 0;
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page.bytes = 0;
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if (o->subfd != -1) {
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memset(fakesub, 0xFF, 12);
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memset(fakesub + 12, 0, 84);
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fakesub[13] = 1;
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fakesub[14] = 1;
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fakesub[20] = 2;
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fakesub[12] = (d->toc->toc_entry[0].control << 4) +
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d->toc->toc_entry[0].adr;
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crc = crc_ccitt(fakesub + 12, 10);
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fakesub[22] = crc >> 8;
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fakesub[23] = crc & 0xFF;
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write(o->subfd, fakesub, 96);
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}
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while (1) {
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seclen = burn_sector_length_read(d, o);
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burn_print(12, "received %d blocks\n", page.sectors);
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for (i = 0; i < page.sectors; i++) {
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burn_packet_process(d, page.data + seclen * i, o);
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d->track_end--;
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drive_lba++;
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}
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if ((d->cancel) || (drive_lba == LAST_SESSION_END(d))) {
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burn_print(1, "finished or cancelled\n");
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d->busy = BURN_DRIVE_IDLE;
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if (!d->cancel)
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d->toc->complete = 1;
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return;
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}
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/* XXX: removal of this line obviously breaks *
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end = burn_track_end(d, d->currsession, d->currtrack); */
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if (drive_lba == end) {
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d->currtrack++;
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if (d->currtrack >
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d->toc->session[d->currsession].lasttrack) {
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d->currsession++;
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burn_print(12, "session switch to %d\n",
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d->currsession);
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burn_print(12, "skipping a lead out\n");
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drive_lba = CURRENT_SESSION_START(d);
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burn_print(12, "new lba %d\n", drive_lba);
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/* XXX more of the same
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end = burn_track_end(d, d->currsession,
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d->currtrack);
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*/ }
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burn_print(12, "track switch to %d\n", d->currtrack);
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}
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page.sectors = 0;
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page.bytes = 0;
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maxsects = BUFFER_SIZE / seclen;
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finish = end - drive_lba;
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d->track_end = finish;
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page.sectors = (finish < maxsects) ? finish : maxsects;
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printf("reading %d sectors from %d\n", page.sectors,
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drive_lba);
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d->read_sectors(d, drive_lba, page.sectors, o, &page);
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printf("Read %d\n", page.sectors);
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}
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#endif
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}
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int burn_sector_length_read(struct burn_drive *d,
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const struct burn_read_opts *o)
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{
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int dlen = 2352;
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int data;
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/*XXX how do we handle this crap now?*/
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/* data = d->toc->track[d->currtrack].toc_entry->control & 4;*/
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data = 1;
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if (o->report_recovered_errors)
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dlen += 294;
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if ((o->subcodes_data) && data)
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dlen += 96;
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if ((o->subcodes_audio) && !data)
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dlen += 96;
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return dlen;
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}
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static int bitcount(unsigned char *data, int n)
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{
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int i, j, count = 0;
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unsigned char tem;
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for (i = 0; i < n; i++) {
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tem = data[i];
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for (j = 0; j < 8; j++) {
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count += tem & 1;
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tem >>= 1;
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}
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}
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return count;
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}
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void burn_packet_process(struct burn_drive *d, unsigned char *data,
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const struct burn_read_opts *o)
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{
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unsigned char sub[96];
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unsigned short crc;
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int ptr = 2352, i, j, code, fb;
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int audio = 1;
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if (o->c2errors) {
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fb = bitcount(data + ptr, 294);
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if (fb) {
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burn_print(1, "%d damaged bits\n",
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bitcount(data + ptr, 294));
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burn_print(1, "sending error on %s %s\n",
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d->idata->vendor, d->idata->product);
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/* XXX send a burn_message! burn_message_error(d,
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something); */
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}
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ptr += 294;
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}
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/*
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if (d->toc->track[d->currtrack].mode == BURN_MODE_UNINITIALIZED) {
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if ((d->toc->track[d->currtrack].toc_entry->control & 4) == 0)
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d->toc->track[d->currtrack].mode = BURN_MODE_AUDIO;
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else
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switch (data[15]) {
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case 0:
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d->toc->track[d->currtrack].mode = BURN_MODE0;
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break;
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case 1:
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d->toc->track[d->currtrack].mode = BURN_MODE1;
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break;
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case 2:
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d->toc->track[d->currtrack].mode =
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BURN_MODE2_FORMLESS;
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break;
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}
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}
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*/
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if ((audio && o->subcodes_audio)
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|| (!audio && o->subcodes_data)) {
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memset(sub, 0, sizeof(sub));
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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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sub[code * 12 + i] <<= 1;
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if (data[ptr + j + i * 8] &
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(1 << (7 - code)))
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sub[code * 12 + i]++;
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}
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}
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}
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crc = (*(sub + 22) << 8) + *(sub + 23);
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if (crc != crc_ccitt(sub + 12, 10)) {
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burn_print(1, "sending error on %s %s\n",
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d->idata->vendor, d->idata->product);
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/* e = burn_error();
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e->drive = d;
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*/
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burn_print(1, "crc mismatch in Q\n");
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}
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/* else process_q(d, sub + 12); */
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/*
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if (o->subfd != -1) write(o->subfd, sub, 96); */
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}
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/*
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if ((d->track_end <= 150)
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&& (drive_lba + 150 < CURRENT_SESSION_END(d))
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&& (TOC_ENTRY(d->toc, d->currtrack).control == 4)
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&& (TOC_ENTRY(d->toc, d->currtrack + 1).control == 0)) {
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burn_print(12, "pregap : %d\n", d->track_end);
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write(o->binfd, zeros, 2352);
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#warning XXX WHERE ARE MY SUBCODES
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} else
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*//* write(o->datafd, data, 2352); */
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}
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/* so yeah, when you uncomment these, make them write zeros insted of crap
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static void write_empty_sector(int fd)
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{
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char sec[2352];
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burn_print(1, "writing an 'empty' sector\n");
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write(fd, sec, 2352);
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}
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static void write_empty_subcode(int fd)
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{
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char sub[96];
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write(fd, sub, 96);
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}
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static void flipq(unsigned char *sub)
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{
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*(sub + 12 + 10) = ~*(sub + 12 + 10);
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*(sub + 12 + 11) = ~*(sub + 12 + 11);
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}
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*/
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