/// Load a songfrom disk
bool Song::Load(const char* filename, void (*progressCallback)(int, const char *))
{
FILE* pfile = fopen(filename, "rb");
// check if file open failed
if(NULL == pfile)
{
printf("Failed to open song file %s!\n", filename);
return false;
}
// init progress display
progressCallback(0, "Loading song...");
fread(&name, SONG_NAME_LEN * sizeof(char), 1, pfile);
fread(&vol, sizeof(char), 1, pfile);
fread(&BPM, sizeof(char), 1, pfile);
fread(&pitch, sizeof(char), 1, pfile);
currentPatternIndex = freadInt(pfile);
songPos = freadInt(pfile);
progressCallback(10, "Loading song...");
// read song list (sequence)
int songListLength = freadInt(pfile);
if (songListLength > PATTERNS_PER_SONG)
{
//DoMessage(sdlRenderer, bigFont, "Song Load Warning", "Song sequence length too long,\npossibly from later version.\n \nSong may be truncated.", false);
SDL_ShowSimpleMessageBox(0, "Song Load Warning", "Song sequence length too long,\npossibly from later version.\n \nSong may be truncated.", NULL);
fread(&songList[0], PATTERNS_PER_SONG * sizeof(char), 1, pfile);
// skip over extra
fseek(pfile, songListLength - PATTERNS_PER_SONG, SEEK_CUR);
}
else
{
fread(&songList[0], songListLength * sizeof(char), 1, pfile);
}
progressCallback(30, "Loading song...");
// read patterns
int numPatterns = freadInt(pfile);
if (numPatterns > MAX_PATTERN)
{
//DoMessage(sdlRenderer, bigFont, "Song Load Warning", "Too many patterns,\npossibly from later version.\n \nSome patterns may not be loaded.", false);
SDL_ShowSimpleMessageBox(0, "Song Load Warning", "Too many patterns,\npossibly from later version.\n \nSome patterns may not be loaded.", NULL);
for (int i = 0; i < MAX_PATTERN; i++)
patterns[i].Read(pfile);
// skip over extra
DrumPattern tempPat;
for (int i = 0; i < (numPatterns - MAX_PATTERN); i++)
tempPat.Read(pfile);
}
else
{
for (int i = 0; i < numPatterns; i++)
patterns[i].Read(pfile);
}
progressCallback(60, "Loading song...");
// read patterns
int numTracks = freadInt(pfile);
if (numTracks > NUM_TRACKS)
{
//DoMessage(sdlRenderer, bigFont, "Song Load Warning", "Too many tracks!\nSome tracks may not be loaded.", false);
SDL_ShowSimpleMessageBox(0, "Song Load Warning", "Too many tracks!\nSome tracks may not be loaded.", NULL);
for (int i = 0; i < NUM_TRACKS; i++)
trackMixInfo[i].Read(pfile);
// skip over extra
TrackMixInfo tempTrackInfo;
for (int i = 0; i < (numTracks - NUM_TRACKS); i++)
tempTrackInfo.Read(pfile);
}
else
{
for (int i = 0; i < numTracks; i++)
trackMixInfo[i].Read(pfile);
}
progressCallback(100, "Loading song...");
fclose(pfile);
return true;
}
UINT32 freadUINT32(FILE* file)
{
return (UINT32)freadInt(file, 4);
}
UINT64 freadUINT64(FILE* file)
{
return freadInt(file, 8);
}
UINT16 freadUINT16(FILE* file)
{
return (UINT16)freadInt(file, 2);
}
