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loading msgs, bugfixes

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@69 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-03-16 20:59:11 +00:00
parent 7336a99a49
commit 66fdc0f0d5
13 changed files with 93 additions and 49 deletions
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19
Pico/cd/buffering.c
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@ -49,7 +49,7 @@ void PicoCDBufferFree(void)
/* this is a try to fight slow SD access of GP2X */
void PicoCDBufferRead(void *dest, int lba)
{
int is_bin, offs, read_len;
int is_bin, offs, read_len, moved = 0;
reads++;
is_bin = Pico_mcd->TOC.Tracks[0].ftype == TYPE_BIN;
@ -84,15 +84,21 @@ void PicoCDBufferRead(void *dest, int lba)
if (lba < prev_lba && prev_lba - lba < PicoCDBuffers)
{
dprintf("CD buffer move");
read_len = prev_lba - lba;
dprintf("CD buffer move=%i, read_len=%i", PicoCDBuffers - read_len, read_len);
memmove(cd_buffer + read_len*2048, cd_buffer, (PicoCDBuffers - read_len)*2048);
moved = 1;
}
else
{
read_len = PicoCDBuffers;
}
if (PicoMessage != NULL && read_len >= 512)
{
PicoMessage("Buffering data...");
}
if (is_bin)
{
int i;
@ -108,5 +114,14 @@ void PicoCDBufferRead(void *dest, int lba)
}
memcpy32(dest, (int *) cd_buffer, 2048/4);
prev_lba = lba;
if (moved)
{
/* file pointer must point to the same data in file, as would-be data after our buffer */
int where_seek;
lba += PicoCDBuffers;
where_seek = is_bin ? (lba * 2352 + 16) : (lba << 11);
pm_seek(Pico_mcd->TOC.Tracks[0].F, where_seek, SEEK_SET);
}
}