Date: Thu, 11 Mar 2004 18:45:17 +0900
From: Hayashi Naoyuki
Subject: Re: Tru64 cdrom and pthread option fix
I wrote
/* Some CD-ROM drives cannot play the first 150 frames. */
in src/cdrom/osf/SDL_syscdrom.c
and
Some CD-ROM drives(ex. TEAC CD-532E) cannot play first 150 frames(aka gap).
but this is not right.
It is written in MMC that LBA = 4500*M + 75*S + F - 150.
--- a/src/cdrom/osf/SDL_syscdrom.c Sun Mar 07 16:40:15 2004 +0000
+++ b/src/cdrom/osf/SDL_syscdrom.c Thu Mar 11 12:59:41 2004 +0000
@@ -393,13 +393,12 @@
int end;
bzero(&msf, sizeof(msf));
- start += 150; /* Some CD-ROM drives cannot play the first 150 frames. */
end = start +length;
- FRAMES_TO_MSF(start,
+ FRAMES_TO_MSF(start + 150, /* LBA = 4500*M + 75*S + F - 150 */
&msf.msf_starting_M_unit,
&msf.msf_starting_S_unit,
&msf.msf_starting_F_unit);
- FRAMES_TO_MSF(end,
+ FRAMES_TO_MSF(end + 150, /* LBA = 4500*M + 75*S + F - 150 */
&msf.msf_ending_M_unit,
&msf.msf_ending_S_unit,
&msf.msf_ending_F_unit);
@@ -449,3 +448,4 @@
}
}
+