+/***********************************************************
+ * *
+ * This source was taken from the Gens project *
+ * Written by Stéphane Dallongeville *
+ * Copyright (c) 2002 by Stéphane Dallongeville *
+ * Modified/adapted for PicoDrive by notaz, 2007 *
+ * *
+ ***********************************************************/
+
#include <sys/stat.h>
#include "cd_file.h"
}
+void PicoCDBufferRead(void *dest, int lba);
+
+
int FILE_Read_One_LBA_CDC(void)
{
- int where_read = 0;
// static char cp_buf[2560];
if (Pico_mcd->s68k_regs[0x36] & 1) // DATA
{
if (Pico_mcd->TOC.Tracks[0].F == NULL) return -1;
- if (Pico_mcd->scd.Cur_LBA < 0)
- where_read = 0;
- else if (Pico_mcd->scd.Cur_LBA >= Pico_mcd->TOC.Tracks[0].Length)
- where_read = Pico_mcd->TOC.Tracks[0].Length - 1;
- else where_read = Pico_mcd->scd.Cur_LBA;
-
- if (Pico_mcd->TOC.Tracks[0].ftype == TYPE_ISO) where_read <<= 11;
- else where_read = (where_read * 2352 + 16);
-
// moved below..
//fseek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
//fread(cp_buf, 1, 2048, Pico_mcd->TOC.Tracks[0].F);
{
// int rate, channel;
- if (Pico_mcd->TOC.Tracks[Pico_mcd->scd.Cur_Track - 1].ftype == TYPE_MP3)
+ // if (Pico_mcd->TOC.Tracks[Pico_mcd->scd.Cur_Track - 1].ftype == TYPE_MP3)
{
// TODO
// MP3_Update(cp_buf, &rate, &channel, 0);
{
if (Pico_mcd->cdc.CTRL.B.B0 & 0x04) // WRRQ : this bit enable write to buffer
{
+ int where_read = 0;
+
// CAUTION : lookahead bit not implemented
+ if (Pico_mcd->scd.Cur_LBA < 0)
+ where_read = 0;
+ else if (Pico_mcd->scd.Cur_LBA >= Pico_mcd->TOC.Tracks[0].Length)
+ where_read = Pico_mcd->TOC.Tracks[0].Length - 1;
+ else where_read = Pico_mcd->scd.Cur_LBA;
+
Pico_mcd->scd.Cur_LBA++;
Pico_mcd->cdc.WA.N = (Pico_mcd->cdc.WA.N + 2352) & 0x7FFF; // add one sector to WA
*(unsigned int *)(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N) = Pico_mcd->cdc.HEAD.N;
//memcpy(&Pico_mcd->cdc.Buffer[Pico_mcd->cdc.PT.N + 4], cp_buf, 2048);
- pm_seek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
- pm_read(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, 2048, Pico_mcd->TOC.Tracks[0].F);
+ //pm_seek(Pico_mcd->TOC.Tracks[0].F, where_read, SEEK_SET);
+ //pm_read(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, 2048, Pico_mcd->TOC.Tracks[0].F);
+ PicoCDBufferRead(Pico_mcd->cdc.Buffer + Pico_mcd->cdc.PT.N + 4, where_read);
#ifdef DEBUG_CD
cdprintf("Read -> WA = %d Buffer[%d] =", Pico_mcd->cdc.WA.N, Pico_mcd->cdc.PT.N & 0x3FFF);