devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

Fixed potential sample overflow in variable stereo width > 100% and karaoke mode, both hwcodec and swcodec.

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@9263 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2006-03-26 17:41:36 +00:00
parent d9ef5980df
commit 8083e8c0de
2 changed files with 17 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

18
firmware/sound.c
View file

@ -504,12 +504,12 @@ static void set_channel_config(void)
}
else
{
fp_straight = - (1<<19);
fp_cross = ((2 * fp_width / (((1<<19) + fp_width) >> 10))
<< 9) - (1<<19);
/* straight = - (1 + width) / (2 * width) */
fp_straight = - ((((1<<19) + fp_width) / (fp_width >> 9)) << 9);
fp_cross = (1<<19) + fp_straight;
}
val_ll = val_rr = fp_straight & 0xFFFFF;
val_lr = val_rl = fp_cross & 0xFFFFF;
val_ll = val_rr = fp_straight & 0xfffff;
val_lr = val_rl = fp_cross & 0xfffff;
}
break;
@ -528,10 +528,10 @@ static void set_channel_config(void)
break;
case SOUND_CHAN_KARAOKE:
val_ll = 0x80001;
val_lr = 0x7ffff;
val_rl = 0x7ffff;
val_rr = 0x80001;
val_ll = 0xc0000;
val_lr = 0x40000;
val_rl = 0x40000;
val_rr = 0xc0000;
break;
}