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fix DVD/7z

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This commit is contained in:
dborth 2008-10-15 18:28:37 +00:00
parent 34e6d23bf5
commit 7709f15025
3 changed files with 26 additions and 21 deletions
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36
source/ngc/dvd.cpp
View File

@ -25,9 +25,9 @@ extern "C" {
#include "filesel.h"
#include "vba.h"
u64 dvddir = 0;
u64 dvdrootdir = 0;
int dvddirlength = 0;
u64 dvddir = 0; // offset of currently selected file or folder
int dvddirlength = 0; // length of currently selected file or folder
u64 dvdrootdir = 0; // offset of DVD root
bool isWii = false;
#ifdef HW_DOL
@ -35,17 +35,15 @@ bool isWii = false;
volatile unsigned long *dvd = (volatile unsigned long *) 0xCC006000;
#endif
/** Due to lack of memory, we'll use this little 2k keyhole for all DVD operations **/
unsigned char DVDreadbuffer[2048] ATTRIBUTE_ALIGN (32);
unsigned char dvdbuffer[2048];
/****************************************************************************
* dvd_read
*
* The only DVD function we need - you gotta luv gc-linux self-boots!
* Main DVD function, everything else uses this!
* returns: 1 - ok ; 0 - error
***************************************************************************/
#define ALIGN_FORWARD(x,align) ((typeof(x))((((uint32_t)(x)) + (align) - 1) & (~(align-1))))
#define ALIGN_BACKWARD(x,align) ((typeof(x))(((uint32_t)(x)) & (~(align-1))))
int
dvd_read (void *dst, unsigned int len, u64 offset)
{
@ -55,7 +53,9 @@ dvd_read (void *dst, unsigned int len, u64 offset)
// don't read past the end of the DVD (1.5 GB for GC DVD, 4.7 GB for DVD)
if((offset < 0x57057C00) || (isWii && (offset < 0x118244F00LL)))
{
unsigned char *buffer = (unsigned char *) (unsigned int) DVDreadbuffer;
u8 * buffer = (u8 *)memalign(32, 0x8000);
u32 off_size = 0;
DCInvalidateRange ((void *) buffer, len);
#ifdef HW_DOL
@ -75,11 +75,17 @@ dvd_read (void *dst, unsigned int len, u64 offset)
if (dvd[0] & 0x4)
return 0;
#else
if (DI_ReadDVD(buffer, len >> 11, (u32)(offset >> 11)))
off_size = offset - ALIGN_BACKWARD(offset,0x800);
if (DI_ReadDVD(
buffer,
(ALIGN_FORWARD(offset + len,0x800) - ALIGN_BACKWARD(offset,0x800)) >> 11,
(u32)(ALIGN_BACKWARD(offset, 0x800) >> 11)
))
return 0;
#endif
memcpy (dst, buffer, len);
memcpy (dst, buffer+off_size, len);
free(buffer);
return 1;
}
@ -238,6 +244,7 @@ getpvd ()
{
int sector = 16;
u32 rootdir32;
unsigned char dvdbuffer[2048];
dvddir = dvddirlength = 0;
IsJoliet = -1;
@ -322,7 +329,7 @@ bool TestDVD()
***************************************************************************/
static int diroffset = 0;
static int
getentry (int entrycount)
getentry (int entrycount, unsigned char dvdbuffer[])
{
char fname[512]; /* Huge, but experience has determined this */
char *ptr;
@ -442,6 +449,7 @@ ParseDVDdirectory ()
u64 rdoffset;
int len = 0;
int filecount = 0;
unsigned char dvdbuffer[2048];
// initialize selection
selection = offset = 0;
@ -461,7 +469,7 @@ ParseDVDdirectory ()
diroffset = 0;
while (getentry (filecount))
while (getentry (filecount, dvdbuffer))
{
if(strlen(filelist[filecount].filename) > 0 && filecount < MAXFILES)
filecount++;

1
source/ngc/filesel.cpp
View File

@ -340,6 +340,7 @@ int FileSelector (int method)
{
if(method == METHOD_DVD)
{
// go to directory the 7z was in
dvddir = filelist[0].offset;
dvddirlength = filelist[0].length;
}

10
source/ngc/gcunzip.cpp
View File

@ -442,18 +442,14 @@ int SzParse(char * filepath, int method)
{
// Parses the 7z into a full file listing
// store the current 7z data
unsigned int oldLength = filelist[selection].length;
u64 oldOffset = filelist[selection].offset;
// erase all previous entries
memset(&filelist, 0, sizeof(FILEENTRIES) * MAXFILES);
// add '..' folder
// add '..' folder in case the user wants exit the 7z
strncpy(filelist[0].displayname, "..", 2);
filelist[0].flags = 1;
filelist[0].length = oldLength;
filelist[0].offset = oldOffset; // in case the user wants exit 7z
filelist[0].offset = dvddir;
filelist[0].length = dvddirlength;
// get contents and parse them into file list structure
unsigned int SzI, SzJ;