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arcade: pre-buffer the ROM, implement patch section, don't send bad ROM to FPGA.

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This commit is contained in:
sorgelig
2019-12-28 01:13:34 +08:00
parent 81fac39308
commit 2a2c005748
1 changed files with 118 additions and 39 deletions
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157
support/arcade/romutils.cpp
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@@ -27,6 +27,7 @@ struct arc_struct {
int length;
int repeat;
int insiderom;
int patchaddr;
int validrom0;
buffer_data *data;
struct MD5Context context;
@@ -35,16 +36,16 @@ struct arc_struct {
static char arcade_error_msg[kBigTextSize] = {};
static char arcade_root[kBigTextSize];
#define DEBUG_ROM_BINARY 0
#if DEBUG_ROM_BINARY
FILE *rombinary;
#endif
static void set_arcade_root(const char *path)
{
strcpy(arcade_root, path);
char *p = strrchr(arcade_root, '/');
char *p = strstr(arcade_root, "/_");
if (p) p = strchr(p + 1, '/');
if (p) *p = 0;
else strcpy(arcade_root, getRootDir());
printf("arcade_root %s\n", arcade_root);
}
static const char *get_arcade_root(const char *folder = NULL)
@@ -57,33 +58,49 @@ static const char *get_arcade_root(const char *folder = NULL)
return path;
}
static int file_tx_start(unsigned char index)
static int romlen = 0;
static int romblkl = 0;
static uint8_t* romdata = 0;
static uint8_t romindex = 0;
static void file_start(unsigned char index)
{
// set index byte (0=bios rom, 1-n=OSD entry index)
user_io_set_index(index);
romindex = index;
if (romdata) free(romdata);
romdata = 0;
romlen = 0;
romblkl = 0;
}
// prepare transmission of new file
user_io_set_download(1);
#if DEBUG_ROM_BINARY
rombinary = fopen("/media/fat/this.rom", "wb");
#endif
#define BLKL (1024*1024)
static int file_checksz(int chunk)
{
if ((romlen + chunk) > romblkl)
{
romblkl += BLKL;
romdata = (uint8_t*)realloc(romdata, romblkl);
if (!romdata)
{
romblkl = 0;
romlen = 0;
return 0;
}
}
return 1;
}
static int file_tx_data(const uint8_t *buf, uint16_t chunk, struct MD5Context *md5context)
static int file_data(const uint8_t *buf, uint16_t chunk, struct MD5Context *md5context)
{
user_io_file_tx_write(buf, chunk);
if (!file_checksz(chunk)) return 0;
memcpy(romdata + romlen, buf, chunk);
romlen += chunk;
if (md5context) MD5Update(md5context, buf, chunk);
#if DEBUG_ROM_BINARY
fwrite(buf, 1, chunk, rombinary);
#endif
return 1;
}
static int file_tx_file(const char *name, int start, int len, struct MD5Context *md5context)
static int file_file(const char *name, int start, int len, struct MD5Context *md5context)
{
char mute = 0;
fileTYPE f = {};
@@ -92,33 +109,76 @@ static int file_tx_file(const char *name, int start, int len, struct MD5Context
if (start) FileSeek(&f, start, SEEK_SET);
unsigned long bytes2send = f.size;
if (len > 0 && len < (int)bytes2send) bytes2send = len;
/* transmit the entire file using one transfer */
//printf("Selected file %s with %lu bytes to send \n", name, bytes2send);
while (bytes2send)
{
uint16_t chunk = (bytes2send > sizeof(buf)) ? sizeof(buf) : bytes2send;
FileReadAdv(&f, buf, chunk);
file_tx_data(buf, chunk, md5context);
if (!file_data(buf, chunk, md5context))
{
FileClose(&f);
return 0;
};
bytes2send -= chunk;
}
FileClose(&f);
return 1;
}
static int file_tx_finish()
static int file_patch(const uint8_t *buf, int offset, uint16_t len)
{
printf("\n");
#if DEBUG_ROM_BINARY
fclose(rombinary);
#endif
// signal end of transmission
user_io_set_download(0);
if ((offset + len) > romlen) return 0;
memcpy(romdata + offset, buf, len);
return 1;
}
static void file_finish(int send)
{
if (romlen && romdata)
{
if (send)
{
// set index byte (0=bios rom, 1-n=OSD entry index)
user_io_set_index(romindex);
// prepare transmission of new file
user_io_set_download(1);
uint8_t *data = romdata;
while (romlen > 0)
{
uint16_t chunk = (romlen > 4096) ? 4096 : romlen;
user_io_file_tx_write(data, chunk);
romlen -= chunk;
data += chunk;
}
// signal end of transmission
user_io_set_download(0);
printf("file_finish: sent to FPGA\n");
}
else
{
printf("file_finish: discard the ROM\n");
}
free(romdata);
romdata = 0;
return;
}
if (romdata)
{
free(romdata);
romdata = 0;
}
printf("file_finish: no data, discarded\n");
}
/*
* adapted from https://gist.github.com/xsleonard/7341172
*
@@ -207,6 +267,8 @@ static int xml_send_rom(XMLEvent evt, const XMLNode* node, SXML_CHAR* text, cons
if (!strcasecmp(node->tag, "part"))
arc_info->partzipname[0] = 0;
if (!strcasecmp(node->tag, "patch"))
arc_info->patchaddr = 0;
//printf("XML_EVENT_START_NODE: tag [%s]\n",node->tag);
// walk the attributes and save them in the data structure as appropriate
@@ -230,7 +292,8 @@ static int xml_send_rom(XMLEvent evt, const XMLNode* node, SXML_CHAR* text, cons
arc_info->romindex = atoi(node->attributes[i].value);
}
/* these only exist if we are inside the rom tag, and in a part tag*/
if (arc_info->insiderom) {
if (arc_info->insiderom)
{
if (!strcasecmp(node->attributes[i].name, "zip") && !strcasecmp(node->tag, "part"))
{
strcpy(arc_info->partzipname, node->attributes[i].value);
@@ -251,6 +314,10 @@ static int xml_send_rom(XMLEvent evt, const XMLNode* node, SXML_CHAR* text, cons
{
arc_info->repeat = atoi(node->attributes[i].value);
}
if (!strcasecmp(node->attributes[i].name, "offset") && !strcasecmp(node->tag, "patch"))
{
arc_info->patchaddr = strtoul(node->attributes[i].value, NULL, 0);
}
}
}
@@ -265,7 +332,7 @@ static int xml_send_rom(XMLEvent evt, const XMLNode* node, SXML_CHAR* text, cons
if (arc_info->romindex == 0 && strlen(arc_info->zipname))
arc_info->error_msg[0] = 0;
file_tx_start(arc_info->romindex);
file_start(arc_info->romindex);
}
break;
@@ -288,7 +355,6 @@ static int xml_send_rom(XMLEvent evt, const XMLNode* node, SXML_CHAR* text, cons
unsigned char checksum[16];
int checksumsame = 1;
char *md5 = arc_info->md5;
file_tx_finish();
MD5Final(checksum, &arc_info->context);
printf("md5[%s]\n", arc_info->md5);
printf("md5-calc[");
@@ -320,6 +386,8 @@ static int xml_send_rom(XMLEvent evt, const XMLNode* node, SXML_CHAR* text, cons
arc_info->error_msg[0] = 0;
}
}
file_finish(checksumsame);
}
arc_info->insiderom = 0;
}
@@ -354,7 +422,7 @@ static int xml_send_rom(XMLEvent evt, const XMLNode* node, SXML_CHAR* text, cons
printf("file: %s, start=%d, len=%d\n", fname, start, length);
for (int i = 0; i < repeat; i++)
{
int result = file_tx_file(fname, start, length, &arc_info->context);
int result = file_file(fname, start, length, &arc_info->context);
// we should check file not found error for the zip
if (result == 0)
@@ -376,11 +444,22 @@ static int xml_send_rom(XMLEvent evt, const XMLNode* node, SXML_CHAR* text, cons
//printf("\n");
if (binary)
{
for (int i = 0; i < repeat; i++) file_tx_data(binary, len, &arc_info->context);
for (int i = 0; i < repeat; i++) file_data(binary, len, &arc_info->context);
free(binary);
}
}
}
if (!strcasecmp(node->tag, "patch") && arc_info->insiderom)
{
size_t len = 0;
unsigned char* binary = hexstr_to_char(arc_info->data->content, &len);
if (binary)
{
file_patch(binary, arc_info->patchaddr, len);
free(binary);
}
}
break;
case XML_EVENT_ERROR:
@@ -528,7 +607,7 @@ int arcade_load(const char *xml)
MenuHide();
set_arcade_root(xml);
printf("arcade_scan_xml_for_rbf [%s]\n", xml);
printf("arcade_load [%s]\n", xml);
const char *rbf = get_rbf(xml);
if (rbf)