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Only set realistic maximum DVD speeds (for my LG GSA which fails otherwise)

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This commit is contained in:
Thomas Schmitt 2007-07-14 11:22:01 +00:00
parent 374b08090c
commit 37868dec9b
2 changed files with 32 additions and 11 deletions
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2
libburn/trunk/cdrskin/cdrskin_timestamp.h
View File

@ -1 +1 @@
#define Cdrskin_timestamP "2007.07.14.111614"
#define Cdrskin_timestamP "2007.07.14.112029"

41
libburn/trunk/libburn/mmc.c
View File

@ -1627,21 +1627,40 @@ void mmc_perform_opc(struct burn_drive *d)
/* ts A61221 : Learned much from dvd+rw-tools-7.0 set_speed_B6h() but then
made own experiments on base of mmc5r03c.pdf 6.8.3 and 6.39 in the hope
to achieve a leaner solution */
to achieve a leaner solution
ts A70712 : That leaner solution does not suffice for my LG GSA-4082B.
Meanwhile there is a speed descriptor list anyway.
*/
int mmc_set_streaming(struct burn_drive *d, int r_speed, int w_speed)
{
struct buffer buf;
struct command c;
int b, end_lba;
int b, end_lba = 0;
char msg[160];
unsigned char *pd;
struct burn_speed_descriptor *best_sd = NULL;
mmc_function_spy("mmc_set_streaming");
if (r_speed <= 0)
r_speed = 0x10000000; /* ~ 2 TB/s */
if (w_speed <= 0)
w_speed = 0x10000000; /* ~ 2 TB/s */
if (r_speed <= 0 || w_speed <= 0) {
/* ts A70712 : now searching for best speed descriptor */
if (w_speed > 0 && r_speed <= 0)
burn_drive_get_best_speed(d, r_speed, &best_sd, 1);
else
burn_drive_get_best_speed(d, w_speed, &best_sd, 0);
if (best_sd != NULL) {
w_speed = best_sd->write_speed;
d->nominal_write_speed = w_speed;
r_speed = best_sd->read_speed;
end_lba = best_sd->end_lba;
} else {
if (w_speed <= 0)
w_speed = 0x10000000; /* ~ 2 TB/s */
if (r_speed <= 0)
r_speed = 0x10000000; /* ~ 2 TB/s */
}
}
scsi_init_command(&c, MMC_SET_STREAMING, sizeof(MMC_SET_STREAMING));
/*
c.oplen = sizeof(MMC_SET_STREAMING);
@ -1662,10 +1681,12 @@ int mmc_set_streaming(struct burn_drive *d, int r_speed, int w_speed)
*/
pd[0] = 0; /* WRC=0 (Default Rotation Control), RDD=Exact=RA=0 */
/* Default computed from 4.7e9 */
end_lba = 2294921 - 1;
if (d->mdata->max_end_lba > 0)
end_lba = d->mdata->max_end_lba - 1;
if (end_lba == 0) {
/* Default computed from 4.7e9 */
end_lba = 2294921 - 1;
if (d->mdata->max_end_lba > 0)
end_lba = d->mdata->max_end_lba - 1;
}
sprintf(msg, "mmc_set_streaming: end_lba=%d , r=%d , w=%d",
end_lba, r_speed, w_speed);