int fmt_aiff_export_body(disko_t *fp, const uint8_t *data, size_t length)
{
struct aiff_writedata *awd = fp->userdata;
if (length % awd->bps) {
log_appendf(4, "AIFF export: received uneven length");
return DW_ERROR;
}
awd->numbytes += length;
if (awd->swap) {
const int16_t *ptr = (const int16_t *) data;
uint16_t v;
length /= 2;
while (length--) {
v = *ptr;
v = bswapBE16(v);
disko_write(fp, &v, 2);
ptr++;
}
} else {
disko_write(fp, data, length);
}
return DW_OK;
}
static int _read_iff(dmoz_file_t *file, song_sample_t *smp, const uint8_t *data, size_t length)
{
chunk_t chunk;
size_t pos = 0;
chunk_t vhdr, body, name, comm, auth, anno, ssnd; // butt
if (!iff_chunk_read(&chunk, data, length, &pos))
return 0;
if (chunk.id != ID_FORM)
return 0;
// jump "into" the FORM chunk
// if (pos < length), there's more data after the FORM chunk -- but I don't care about this scenario
pos = 0;
length = MIN(length, chunk.size);
data = chunk.data->FORM.data;
/* the header is already byteswapped, but anything in 'chunk' will need to be swapped as needed
because the structure is a const pointing into the data itself */
switch (bswapBE32(chunk.data->FORM.filetype)) {
case ID_8SVX:
// shut up, gcc
ZEROIZE(vhdr);
ZEROIZE(body);
ZEROIZE(name);
ZEROIZE(auth);
ZEROIZE(anno);
while (iff_chunk_read(&chunk, data, length, &pos)) {
switch (chunk.id) {
case ID_VHDR: vhdr = chunk; break;
case ID_BODY: body = chunk; break;
case ID_NAME: name = chunk; break;
case ID_AUTH: auth = chunk; break;
case ID_ANNO: anno = chunk; break;
default: break;
}
}
if (!(vhdr.id && body.id))
return 0;
if (vhdr.data->VHDR.compression) {
log_appendf(4, "error: compressed 8SVX files are unsupported");
return 0;
}
if (vhdr.data->VHDR.num_octaves != 1) {
log_appendf(4, "warning: 8SVX file contains %d octaves",
vhdr.data->VHDR.num_octaves);
}
if (file) {
file->description = "8SVX sample";
file->type = TYPE_SAMPLE_PLAIN;
}
if (!name.id) name = auth;
if (!name.id) name = anno;
if (name.id) {
if (file) {
file->title = calloc(1, name.size + 1);
memcpy(file->title, name.data->bytes, name.size);
file->title[name.size] = '\0';
}
if (smp) {
int len = MIN(25, name.size);
memcpy(smp->name, name.data->bytes, len);
smp->name[len] = 0;
}
}
if (smp) {
smp->c5speed = bswapBE16(vhdr.data->VHDR.smp_per_sec);
smp->length = body.size;
csf_read_sample(smp, SF_BE | SF_PCMS | SF_8 | SF_M, body.data->bytes, body.size);
smp->volume = 64*4;
smp->global_volume = 64;
// this is done kinda weird
smp->loop_end = bswapBE32(vhdr.data->VHDR.smp_highoct_repeat);
if (smp->loop_end) {
smp->loop_start = bswapBE32(vhdr.data->VHDR.smp_highoct_1shot);
smp->loop_end += smp->loop_start;
if (smp->loop_start > smp->length)
smp->loop_start = 0;
if (smp->loop_end > smp->length)
smp->loop_end = smp->length;
if (smp->loop_start + 2 < smp->loop_end)
smp->flags |= CHN_LOOP;
}
// TODO vhdr.data->VHDR.volume ?
}
return 1;
case ID_AIFF:
ZEROIZE(comm);
ZEROIZE(ssnd);
ZEROIZE(name);
ZEROIZE(auth);
ZEROIZE(anno);
while (iff_chunk_read(&chunk, data, length, &pos)) {
switch (chunk.id) {
case ID_COMM: comm = chunk; break;
case ID_SSND: ssnd = chunk; break;
case ID_NAME: name = chunk; break;
default: break;
}
}
if (!(comm.id && ssnd.id))
return 0;
if (file) {
file->description = "Audio IFF sample";
file->type = TYPE_SAMPLE_PLAIN;
}
if (!name.id) name = auth;
if (!name.id) name = anno;
if (name.id) {
if (file) {
file->title = calloc(1, name.size + 1);
memcpy(file->title, name.data->bytes, name.size);
file->title[name.size] = '\0';
}
if (smp) {
int len = MIN(25, name.size);
memcpy(smp->name, name.data->bytes, len);
smp->name[len] = 0;
}
}
/* TODO loop points */
if (smp) {
uint32_t flags = SF_BE | SF_PCMS;
switch (bswapBE16(comm.data->COMM.num_channels)) {
default:
log_appendf(4, "warning: multichannel AIFF is unsupported");
case 1:
flags |= SF_M;
break;
case 2:
flags |= SF_SI;
break;
}
switch ((bswapBE16(comm.data->COMM.sample_size) + 7) & ~7) {
default:
log_appendf(4, "warning: AIFF has unsupported bit-width");
case 8:
flags |= SF_8;
break;
case 16:
flags |= SF_16;
break;
}
// TODO: data checking; make sure sample count and byte size agree
// (and if not, cut to shorter of the two)
smp->c5speed = ConvertFromIeeeExtended(comm.data->COMM.sample_rate);
smp->length = bswapBE32(comm.data->COMM.num_frames);
smp->volume = 64*4;
smp->global_volume = 64;
// the audio data starts 8 bytes into the chunk
// (don't care about the block alignment stuff)
csf_read_sample(smp, flags, ssnd.data->bytes + 8, ssnd.size - 8);
}
return 1;
}
return 0;
}
static int aiff_header(disko_t *fp, int bits, int channels, int rate,
const char *name, size_t length, struct aiff_writedata *awd /* out */)
{
int16_t s;
uint32_t ul;
int tlen, bps = 1;
uint8_t b[10];
bps *= ((bits + 7) / 8);
/* note: channel multiply is done below -- need single-channel value for the COMM chunk */
/* write a very large size for now */
disko_write(fp, "FORM\377\377\377\377AIFF", 12);
if (name && *name) {
disko_write(fp, "NAME", 4);
tlen = strlen(name);
ul = (tlen + 1) & ~1; /* must be even */
ul = bswapBE32(ul);
disko_write(fp, &ul, 4);
disko_write(fp, name, tlen);
if (tlen & 1)
disko_putc(fp, '\0');
}
/* Common Chunk
The Common Chunk describes fundamental parameters of the sampled sound.
typedef struct {
ID ckID; // 'COMM'
long ckSize; // 18
short numChannels;
unsigned long numSampleFrames;
short sampleSize;
extended sampleRate;
} CommonChunk; */
disko_write(fp, "COMM", 4);
ul = bswapBE32(18); /* chunk size -- won't change */
disko_write(fp, &ul, 4);
s = bswapBE16(channels);
disko_write(fp, &s, 2);
if (awd)
awd->comm_frames = disko_tell(fp);
ul = bswapBE32(length); /* num sample frames */
disko_write(fp, &ul, 4);
s = bswapBE16(bits);
disko_write(fp, &s, 2);
ConvertToIeeeExtended(rate, b);
disko_write(fp, b, 10);
/* NOW do this (sample size in AIFF is indicated per channel, not per frame) */
bps *= channels; /* == number of bytes per (stereo) sample */
/* Sound Data Chunk
The Sound Data Chunk contains the actual sample frames.
typedef struct {
ID ckID; // 'SSND'
long ckSize; // data size in bytes, *PLUS EIGHT* (for offset and blockSize)
unsigned long offset; // just set this to 0...
unsigned long blockSize; // likewise
unsigned char soundData[];
} SoundDataChunk; */
disko_write(fp, "SSND", 4);
if (awd)
awd->ssnd_size = disko_tell(fp);
ul = bswapBE32(length * bps + 8);
disko_write(fp, &ul, 4);
ul = bswapBE32(0);
disko_write(fp, &ul, 4);
disko_write(fp, &ul, 4);
return bps;
}
int fmt_mod_load_song(song_t *song, slurp_t *fp, unsigned int lflags)
{
uint8_t tag[4];
int n, npat, pat, chan, nchan, nord;
song_note_t *note;
uint16_t tmp;
int startrekker = 0;
int test_wow = 0;
int mk = 0;
int maybe_st3 = 0;
int maybe_ft2 = 0;
uint8_t restart;
long samplesize = 0;
const char *tid = NULL;
/* check the tag (and set the number of channels) -- this is ugly, so don't look */
slurp_seek(fp, 1080, SEEK_SET);
slurp_read(fp, tag, 4);
if (!memcmp(tag, "M.K.", 4)) {
/* M.K. = Protracker etc., or Mod's Grave (*.wow) */
nchan = 4;
test_wow = 1;
mk = 1;
maybe_ft2 = 1;
tid = "Amiga-NewTracker";
} else if (!memcmp(tag, "M!K!", 4)) {
nchan = 4;
tid = "Amiga-ProTracker";
} else if (!memcmp(tag, "M&K!", 4) || !memcmp(tag, "N.T.", 4)) {
nchan = 4;
tid = "Amiga-NoiseTracker"; // or so the word on the street is; I don't have any of these
} else if ((!memcmp(tag, "FLT", 3) || !memcmp(tag, "EXO", 3)) && (tag[3] == '4' || tag[3] == '8')) {
// Hopefully EXO8 is stored the same way as FLT8
nchan = tag[3] - '0';
startrekker = (nchan == 8);
tid = "%d Channel Startrekker";
//log_appendf(4, " Warning: Startrekker AM synth is not supported");
} else if (!memcmp(tag, "FEST", 4)) {
// the mysterious mod.jobbig
nchan = 4;
tid = "4 Channel Startrekker (?)";
} else if (!memcmp(tag, "OCTA", 4)) {
nchan = 8;
tid = "Amiga Oktalyzer"; // IT just identifies this as "8 Channel MOD"
} else if (!memcmp(tag, "CD81", 4)) {
nchan = 8;
tid = "8 Channel Falcon"; // Atari Oktalyser
} else if (tag[0] > '0' && tag[0] <= '9' && !memcmp(tag + 1, "CHN", 3)) {
/* nCHN = Fast Tracker (if n is even) or TakeTracker (if n = 5, 7, or 9) */
nchan = tag[0] - '0';
if (nchan == 5 || nchan == 7 || nchan == 9) {
tid = "%d Channel TakeTracker";
} else {
if (!(nchan & 1))
maybe_ft2 = 1;
tid = "%d Channel MOD"; // generic
}
maybe_st3 = 1;
} else if (tag[0] > '0' && tag[0] <= '9' && tag[1] >= '0' && tag[1] <= '9'
&& tag[2] == 'C' && (tag[3] == 'H' || tag[3] == 'N')) {
/* nnCH = Fast Tracker (if n is even and <= 32) or TakeTracker (if n = 11, 13, 15)
* Not sure what the nnCN variant is. */
nchan = 10 * (tag[0] - '0') + (tag[1] - '0');
if (nchan == 11 || nchan == 13 || nchan == 15) {
tid = "%d Channel TakeTracker";
} else {
if ((nchan & 1) == 0 && nchan <= 32 && tag[3] == 'H')
maybe_ft2 = 1;
tid = "%d Channel MOD"; // generic
}
if (tag[3] == 'H')
maybe_st3 = 1;
} else if (!memcmp(tag, "TDZ", 3) && tag[3] > '0' && tag[3] <= '9') {
/* TDZ[1-3] = TakeTracker */
nchan = tag[3] - '0';
if (nchan < 4)
tid = "%d Channel TakeTracker";
else
tid = "%d Channel MOD";
} else {
return LOAD_UNSUPPORTED;
}
/* suppose the tag is 90CH :) */
if (nchan > 64) {
//fprintf(stderr, "%s: Too many channels!\n", filename);
return LOAD_FORMAT_ERROR;
}
/* read the title */
slurp_rewind(fp);
slurp_read(fp, song->title, 20);
song->title[20] = 0;
/* sample headers */
for (n = 1; n < 32; n++) {
slurp_read(fp, song->samples[n].name, 22);
song->samples[n].name[22] = 0;
slurp_read(fp, &tmp, 2);
song->samples[n].length = bswapBE16(tmp) * 2;
/* this is only necessary for the wow test... */
samplesize += song->samples[n].length;
song->samples[n].c5speed = MOD_FINETUNE(slurp_getc(fp));
song->samples[n].volume = slurp_getc(fp);
if (song->samples[n].volume > 64)
song->samples[n].volume = 64;
if (!song->samples[n].length && song->samples[n].volume)
maybe_ft2 = 0;
song->samples[n].volume *= 4; //mphack
song->samples[n].global_volume = 64;
slurp_read(fp, &tmp, 2);
song->samples[n].loop_start = bswapBE16(tmp) * 2;
slurp_read(fp, &tmp, 2);
tmp = bswapBE16(tmp) * 2;
if (tmp > 2)
song->samples[n].flags |= CHN_LOOP;
else if (tmp == 0)
maybe_st3 = 0;
else if (!song->samples[n].length)
maybe_ft2 = 0;
song->samples[n].loop_end = song->samples[n].loop_start + tmp;
song->samples[n].vib_type = 0;
song->samples[n].vib_rate = 0;
song->samples[n].vib_depth = 0;
song->samples[n].vib_speed = 0;
}
/* pattern/order stuff */
nord = slurp_getc(fp);
restart = slurp_getc(fp);
slurp_read(fp, song->orderlist, 128);
npat = 0;
if (startrekker) {
/* from mikmod: if the file says FLT8, but the orderlist
has odd numbers, it's probably really an FLT4 */
for (n = 0; n < 128; n++) {
if (song->orderlist[n] & 1) {
startrekker = 0;
nchan = 4;
break;
}
}
}
if (startrekker) {
for (n = 0; n < 128; n++)
song->orderlist[n] >>= 1;
}
for (n = 0; n < 128; n++) {
if (song->orderlist[n] >= MAX_PATTERNS)
song->orderlist[n] = ORDER_SKIP;
else if (song->orderlist[n] > npat)
npat = song->orderlist[n];
}
/* set all the extra orders to the end-of-song marker */
memset(song->orderlist + nord, ORDER_LAST, MAX_ORDERS - nord);
if (restart == 0x7f && maybe_st3)
tid = "Scream Tracker 3?";
else if (restart == 0x7f && mk)
tid = "%d Channel ProTracker";
else if (restart <= npat && maybe_ft2)
tid = "%d Channel FastTracker";
else if (restart == npat && mk)
tid = "%d Channel Soundtracker";
/* hey, is this a wow file? */
if (test_wow) {
slurp_seek(fp, 0, SEEK_END);
if (slurp_tell(fp) == 2048 * npat + samplesize + 3132) {
nchan = 8;
tid = "Mod's Grave WOW";
}
}
// http://llvm.org/viewvc/llvm-project?view=rev&revision=91888
sprintf(song->tracker_id, tid ? tid : "%d Channel MOD", nchan);
slurp_seek(fp, 1084, SEEK_SET);
/* pattern data */
if (startrekker) {
for (pat = 0; pat <= npat; pat++) {
note = song->patterns[pat] = csf_allocate_pattern(64);
song->pattern_size[pat] = song->pattern_alloc_size[pat] = 64;
for (n = 0; n < 64; n++, note += 60) {
for (chan = 0; chan < 4; chan++, note++) {
uint8_t p[4];
slurp_read(fp, p, 4);
mod_import_note(p, note);
csf_import_mod_effect(note, 0);
}
}
note = song->patterns[pat] + 4;
for (n = 0; n < 64; n++, note += 60) {
for (chan = 0; chan < 4; chan++, note++) {
uint8_t p[4];
slurp_read(fp, p, 4);
mod_import_note(p, note);
csf_import_mod_effect(note, 0);
}
}
}
} else {
for (pat = 0; pat <= npat; pat++) {
note = song->patterns[pat] = csf_allocate_pattern(64);
song->pattern_size[pat] = song->pattern_alloc_size[pat] = 64;
for (n = 0; n < 64; n++, note += 64 - nchan) {
for (chan = 0; chan < nchan; chan++, note++) {
uint8_t p[4];
slurp_read(fp, p, 4);
mod_import_note(p, note);
csf_import_mod_effect(note, 0);
}
}
}
}
if (restart < npat)
csf_insert_restart_pos(song, restart);
/* sample data */
if (!(lflags & LOAD_NOSAMPLES)) {
for (n = 1; n < 32; n++) {
uint32_t ssize;
if (song->samples[n].length == 0)
continue;
ssize = csf_read_sample(song->samples + n, SF_8 | SF_M | SF_LE | SF_PCMS,
fp->data + fp->pos, fp->length - fp->pos);
slurp_seek(fp, ssize, SEEK_CUR);
}
}
/* set some other header info that's always the same for .mod files */
song->flags = (SONG_ITOLDEFFECTS | SONG_COMPATGXX);
for (n = 0; n < nchan; n++)
song->channels[n].panning = PROTRACKER_PANNING(n);
for (; n < MAX_CHANNELS; n++)
song->channels[n].flags = CHN_MUTE;
song->pan_separation = 64;
// if (slurp_error(fp)) {
// return LOAD_FILE_ERROR;
// }
/* done! */
return LOAD_SUCCESS;
}
