u32 readRom(const u32 pos, const u8 size)
{
if (!fROM) return 0xFFFFFFFF;
fROM->fseek(pos, SEEK_SET);
u32 data = 0xFFFFFFFF;
u32 readed = fROM->fread(&data, size);
return data;
}
u32 readSRAM(const u32 pos, const u8 size)
{
if (!fSRAM)
return 0xFFFFFFFF;
fSRAM->fseek(pos, SEEK_SET);
u32 data = 0xFFFFFFFF;
u32 readed = fSRAM->fread(&data, size);
return data;
}
static bool formatChunk(EMUFILE &inf)
{
// seek to just after the RIFF header
inf.fseek(12,SEEK_SET);
// search for a format chunk
for (;;)
{
char chunk_id[4];
u32 chunk_length;
inf.fread(chunk_id, 4);
if (!inf.read_32LE(chunk_length)) return false;
// if we found a format chunk, excellent!
if (memcmp(chunk_id, "fmt ", 4) == 0 && chunk_length >= 16)
{
// read format chunk
u16 format_tag;
u16 channel_count;
u32 samples_per_second;
//u32 bytes_per_second = read32_le(chunk + 8);
//u16 block_align = read16_le(chunk + 12);
u16 bits_per_sample;
if (inf.read_16LE(format_tag) != 1) return false;
if (inf.read_16LE(channel_count) != 1) return false;
if (inf.read_32LE(samples_per_second) != 1) return false;
inf.fseek(6,SEEK_CUR);
if (inf.read_16LE(bits_per_sample) != 1) return false;
chunk_length -= 16;
// format_tag must be 1 (WAVE_FORMAT_PCM)
// we only support mono 8bit
if (format_tag != 1 ||
channel_count != 1 ||
bits_per_sample != 8)
{
MessageBox(0,"not a valid RIFF WAVE file; must be 8bit mono pcm",0,0);
return false;
}
return true;
}
inf.fseek(chunk_length,SEEK_CUR);
}
return false;
}
u32 scanSaveTypeGBA()
{
if (!fROM) return 0xFF;
fROM->fseek(0, SEEK_SET);
int size = fROM->size();
int lastpct=1;
int len = fROM->size();
for(;;)
{
u32 tmp;
u32 readed = fROM->fread(&tmp, 4);
int pos = fROM->ftell();
int currPct = pos*100/(size-1);
for(int i=lastpct;i<currPct;i++)
{
if(i%10==0)
printf(" %d%%\n",i/10*10);
else printf(".");
lastpct = currPct;
}
if (readed < 4)
break;
if(pos >= len)
break;
switch (tmp)
{
case EEPROM:
return 1;
case SRAM_:
return 2;
case FLASH:
{
u32 tmp = fROM->read32le();
return ((tmp == FLASH1M_)?3:5);
}
case SIIRTC_V:
return 4;
}
}
return 0xFF;
}
static bool dataChunk(EMUFILE &inf)
{
bool found = false;
// seek to just after the RIFF header
inf.fseek(12,SEEK_SET);
// search for a format chunk
for (;;)
{
char chunk_id[4];
u32 chunk_length;
if (inf.eof()) return found;
if (inf.fread(chunk_id, 4) != 4) return found;
if (!inf.read_32LE(chunk_length)) return found;
// if we found a data chunk, excellent!
if (memcmp(chunk_id, "data", 4) == 0)
{
found = true;
u8 *temp = new u8[chunk_length];
if (inf.fread(temp,chunk_length) != chunk_length)
{
delete[] temp;
return false;
}
newWavData.fwrite(temp,chunk_length);
delete[] temp;
chunk_length = 0;
}
inf.fseek(chunk_length,SEEK_CUR);
}
return found;
}
