ref: 561914486a8689289f53d6a8bd7abfaca13142f4
dir: /src/pt2_module_loader.c/
// for finding memory leaks in debug mode with Visual Studio
#if defined _DEBUG && defined _MSC_VER
#include <crtdbg.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#ifdef _WIN32
#include <io.h>
#else
#include <unistd.h>
#endif
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "pt2_mouse.h"
#include "pt2_sampler.h"
#include "pt2_replayer.h"
#include "pt2_textout.h"
#include "pt2_audio.h"
#include "pt2_helpers.h"
#include "pt2_visuals.h"
#include "pt2_sample_loader.h"
#include "pt2_config.h"
#include "pt2_xpk.h"
#include "pt2_askbox.h"
typedef struct mem_t
{
bool _eof;
uint8_t *_ptr, *_base;
uint32_t _cnt, _bufsiz;
} MEMFILE;
static int32_t realSampleLengths[MOD_SAMPLES];
static MEMFILE *mopen(const uint8_t *src, uint32_t length);
static void mclose(MEMFILE **buf);
static int32_t mgetc(MEMFILE *buf);
static size_t mread(void *buffer, size_t size, size_t count, MEMFILE *buf);
static void mseek(MEMFILE *buf, int32_t offset, int32_t whence);
static void mrewind(MEMFILE *buf);
static uint8_t ppdecrunch(uint8_t *src, uint8_t *dst, uint8_t *offsetLens, uint32_t srcLen, uint32_t dstLen, uint8_t skipBits);
#define IS_ID(s, b) !strncmp(s, b, 4)
static uint8_t getModType(uint8_t *numChannels, const char *id)
{
*numChannels = 4;
if (IS_ID("M.K.", id) || IS_ID("M!K!", id) || IS_ID("NSMS", id) || IS_ID("LARD", id) || IS_ID("PATT", id))
{
return FORMAT_MK; // ProTracker (or compatible)
}
else if (IS_ID("FLT4", id))
{
return FORMAT_FLT; // Startrekker (4 channels)
}
else if (IS_ID("N.T.", id))
{
return FORMAT_NT; // NoiseTracker
}
else if (IS_ID("M&K!", id) || IS_ID("FEST", id))
{
return FORMAT_HMNT; // His Master's NoiseTracker
}
else if (id[1] == 'C' && id[2] == 'H' && id[3] == 'N')
{
*numChannels = id[0] - '0';
return FORMAT_FT2; // Fasttracker II 1..9 channels (or other trackers)
}
return FORMAT_UNKNOWN; // may be The Ultimate Soundtracker (set to FORMAT_STK later)
}
// converts zeroes to spaces in a string, up until the last zero found
static void fixZeroesInString(char *str, uint32_t maxLength)
{
int32_t i;
for (i = maxLength-1; i >= 0; i--)
{
if (str[i] != '\0')
break;
}
// convert zeroes to spaces
if (i > 0)
{
for (int32_t j = 0; j < i; j++)
{
if (str[j] == '\0')
str[j] = ' ';
}
}
}
static uint8_t *unpackPPModule(FILE *f, uint32_t *filesize)
{
uint8_t *modBuffer, ppCrunchData[4], *ppBuffer;
uint32_t ppPackLen, ppUnpackLen;
ppPackLen = *filesize;
if ((ppPackLen & 3) || ppPackLen <= 12)
{
displayErrorMsg("POWERPACKER ERROR");
return NULL;
}
ppBuffer = (uint8_t *)malloc(ppPackLen);
if (ppBuffer == NULL)
{
statusOutOfMemory();
return NULL;
}
fseek(f, ppPackLen-4, SEEK_SET);
ppCrunchData[0] = (uint8_t)fgetc(f);
ppCrunchData[1] = (uint8_t)fgetc(f);
ppCrunchData[2] = (uint8_t)fgetc(f);
ppCrunchData[3] = (uint8_t)fgetc(f);
ppUnpackLen = (ppCrunchData[0] << 16) | (ppCrunchData[1] << 8) | ppCrunchData[2];
modBuffer = (uint8_t *)malloc(ppUnpackLen);
if (modBuffer == NULL)
{
free(ppBuffer);
statusOutOfMemory();
return NULL;
}
rewind(f);
fread(ppBuffer, 1, ppPackLen, f);
fclose(f);
if (!ppdecrunch(ppBuffer+8, modBuffer, ppBuffer+4, ppPackLen-12, ppUnpackLen, ppCrunchData[3]))
{
free(ppBuffer);
displayErrorMsg("POWERPACKER ERROR");
return NULL;
}
free(ppBuffer);
*filesize = ppUnpackLen;
return modBuffer;
}
module_t *modLoad(UNICHAR *fileName)
{
char modID[4];
uint8_t numChannels;
uint32_t powerPackerID;
bool veryLateSTKVerFlag = false; // "DFJ SoundTracker III" and later
bool lateSTKVerFlag = false; // "TJC SoundTracker II" and later
bool mightBeSTK = false;
MEMFILE *m = NULL;
FILE *f = NULL;
uint8_t *modBuffer = NULL;
module_t *newMod = (module_t *)calloc(1, sizeof (module_t));
if (newMod == NULL)
{
statusOutOfMemory();
goto modLoadError;
}
f = UNICHAR_FOPEN(fileName, "rb");
if (f == NULL)
{
displayErrorMsg("FILE I/O ERROR !");
goto modLoadError;
}
fseek(f, 0, SEEK_END);
uint32_t filesize = ftell(f);
rewind(f);
// check if mod is a powerpacker mod
fread(&powerPackerID, 4, 1, f);
if (powerPackerID == 0x30325850) // "PX20"
{
displayErrorMsg("ENCRYPTED MOD !");
goto modLoadError;
}
else if (powerPackerID == 0x30325050) // "PP20"
{
modBuffer = unpackPPModule(f, &filesize);
if (modBuffer == NULL)
goto modLoadError; // error msg is set in unpackPPModule()
}
else
{
if (DetectXPK(f))
{
if (!UnpackXPK(f, &filesize, &modBuffer))
{
displayErrorMsg("XPK UNPACK ERROR !");
goto modLoadError;
}
if (modBuffer == NULL)
{
statusOutOfMemory();
goto modLoadError;
}
fclose(f);
}
else
{
modBuffer = (uint8_t *)malloc(filesize);
if (modBuffer == NULL)
{
statusOutOfMemory();
goto modLoadError;
}
fseek(f, 0, SEEK_SET);
fread(modBuffer, 1, filesize, f);
fclose(f);
}
}
// smallest and biggest possible PT .MOD
if (filesize < 2108 || filesize > 4195326)
{
displayErrorMsg("NOT A MOD FILE !");
goto modLoadError;
}
// Use MEMFILE functions on module buffer (similar to FILE functions)
m = mopen(modBuffer, filesize);
if (m == NULL)
{
displayErrorMsg("FILE I/O ERROR !");
goto modLoadError;
}
// check magic ID
memset(modID, 0, 4); // in case mread fails
mseek(m, 1080, SEEK_SET);
mread(modID, 1, 4, m);
uint8_t modFormat = getModType(&numChannels, modID);
if (numChannels == 0 || numChannels > PAULA_VOICES)
{
displayErrorMsg("UNSUPPORTED MOD !");
goto modLoadError;
}
if (modFormat == FORMAT_UNKNOWN)
mightBeSTK = true;
mrewind(m);
mread(newMod->header.name, 1, 20, m);
newMod->header.name[20] = '\0';
// convert illegal song name characters to space
for (int32_t i = 0; i < 20; i++)
{
char tmpChar = newMod->header.name[i];
if ((tmpChar < ' ' || tmpChar > '~') && tmpChar != '\0')
tmpChar = ' ';
newMod->header.name[i] = tmpChar;
}
fixZeroesInString(newMod->header.name, 20);
// read sample headers
moduleSample_t *s = newMod->samples;
for (int32_t i = 0; i < MOD_SAMPLES; i++, s++)
{
if (mightBeSTK && i >= 15) // skip reading sample headers past sample slot 15 in STK/UST modules
{
s->loopLength = 2; // this be set though
continue;
}
mread(s->text, 1, 22, m);
s->text[22] = '\0';
if (modFormat == FORMAT_HMNT)
{
// most of "His Master's Noisetracker" songs have junk sample names, so let's wipe it.
memset(s->text, 0, 22);
}
else
{
// convert illegal sample name characters to space
for (int32_t j = 0; j < 22; j++)
{
char tmpChar = s->text[j];
if ((tmpChar < ' ' || tmpChar > '~') && tmpChar != '\0')
tmpChar = ' ';
s->text[j] = tmpChar;
}
fixZeroesInString(s->text, 22);
}
realSampleLengths[i] = ((mgetc(m) << 8) | mgetc(m)) * 2;
s->length = (realSampleLengths[i] > config.maxSampleLength) ? config.maxSampleLength : realSampleLengths[i];
/* Only late versions of Ultimate SoundTracker could have samples larger than 9999 bytes.
** If found, we know for sure that this is a late STK module.
*/
if (mightBeSTK && s->length > 9999)
lateSTKVerFlag = true;
if (modFormat == FORMAT_HMNT) // finetune in "His Master's NoiseTracker" is different
s->fineTune = (uint8_t)((-mgetc(m) & 0x1F) / 2); // one more bit of precision, + inverted
else
s->fineTune = (uint8_t)mgetc(m) & 0xF;
if (mightBeSTK)
s->fineTune = 0; // this is high byte of volume in STK/UST (has no finetune), set to zero
s->volume = (int8_t)mgetc(m);
if ((uint8_t)s->volume > 64)
s->volume = 64;
int32_t loopStart = ((mgetc(m) << 8) | mgetc(m)) * 2;
int32_t loopLength = ((mgetc(m) << 8) | mgetc(m)) * 2;
if (loopLength < 2)
loopLength = 2; // fixes empty samples in .MODs saved from FT2
// we don't support samples bigger than 65534 (or 128kB) bytes, disable uncompatible loops
if (loopStart > config.maxSampleLength || loopStart+loopLength > config.maxSampleLength)
{
s->loopStart = 0;
s->loopLength = 2;
}
else
{
s->loopStart = loopStart;
s->loopLength = loopLength;
}
// in The Ultimate SoundTracker, sample loop start is in bytes, not words
if (mightBeSTK)
s->loopStart /= 2;
// fix for poorly converted STK (< v2.5) -> PT/NT modules
if (!mightBeSTK && s->loopLength > 2 && s->loopStart+s->loopLength > s->length)
{
if ((s->loopStart/2) + s->loopLength <= s->length)
s->loopStart /= 2;
}
}
newMod->header.numOrders = (uint8_t)mgetc(m);
if (modFormat == FORMAT_MK && newMod->header.numOrders == 129)
newMod->header.numOrders = 127; // fixes a specific copy of beatwave.mod
if (newMod->header.numOrders > 129)
{
displayErrorMsg("NOT A MOD FILE !");
goto modLoadError;
}
if (newMod->header.numOrders == 0)
{
displayErrorMsg("NOT A MOD FILE !");
goto modLoadError;
}
uint8_t restartPos = (uint8_t)mgetc(m);
if (mightBeSTK && restartPos > 220)
{
displayErrorMsg("NOT A MOD FILE !");
goto modLoadError;
}
newMod->header.initialTempo = 125;
if (mightBeSTK)
{
/* If we're still here at this point and the mightBeSTK flag is set,
** then it's most likely a proper The Ultimate SoundTracker (STK/UST) module.
*/
modFormat = FORMAT_STK;
if (restartPos == 0)
restartPos = 120;
// jjk55.mod by Jesper Kyd has a bogus STK tempo value that should be ignored
if (!strcmp("jjk55", newMod->header.name))
restartPos = 120;
// the "restart pos" field in STK is the inital tempo (must be converted to BPM first)
if (restartPos != 120) // 120 is a special case and means 50Hz (125BPM)
{
if (restartPos > 220)
restartPos = 220;
// convert UST tempo to BPM
uint16_t ciaPeriod = (240 - restartPos) * 122;
double dHz = (double)CIA_PAL_CLK / ciaPeriod;
int32_t BPM = (int32_t)((dHz * (125.0 / 50.0)) + 0.5);
newMod->header.initialTempo = (uint16_t)BPM;
}
}
// read orders and count number of patterns
int32_t numPatterns = 0;
for (int32_t i = 0; i < MOD_ORDERS; i++)
{
newMod->header.order[i] = (int16_t)mgetc(m);
if (newMod->header.order[i] > numPatterns)
numPatterns = newMod->header.order[i];
}
numPatterns++;
if (numPatterns > MAX_PATTERNS)
{
displayErrorMsg("UNSUPPORTED MOD !");
goto modLoadError;
}
// skip magic ID (The Ultimate SoundTracker MODs doesn't have it)
if (modFormat != FORMAT_STK)
mseek(m, 4, SEEK_CUR);
// allocate 100 patterns
for (int32_t i = 0; i < MAX_PATTERNS; i++)
{
newMod->patterns[i] = (note_t *)calloc(MOD_ROWS * PAULA_VOICES, sizeof (note_t));
if (newMod->patterns[i] == NULL)
{
statusOutOfMemory();
goto modLoadError;
}
}
// load pattern data
for (int32_t i = 0; i < numPatterns; i++)
{
note_t *note = newMod->patterns[i];
for (int32_t j = 0; j < MOD_ROWS; j++)
{
for (int32_t k = 0; k < numChannels; k++, note++)
{
uint8_t bytes[4] = { 0 };
mread(bytes, 1, 4, m);
note->period = ((bytes[0] & 0x0F) << 8) | bytes[1];
note->sample = (bytes[0] & 0xF0) | (bytes[2] >> 4);
note->command = bytes[2] & 0x0F;
note->param = bytes[3];
// added sanitation not present in original PT
if (note->sample > 31)
note->sample = 0;
if (modFormat == FORMAT_STK)
{
if (note->command == 0xC || note->command == 0xD || note->command == 0xE)
{
// "TJC SoundTracker II" and later
lateSTKVerFlag = true;
}
if (note->command == 0xF)
{
// "DFJ SoundTracker III" and later
lateSTKVerFlag = true;
veryLateSTKVerFlag = true;
}
}
}
if (numChannels < PAULA_VOICES)
note += PAULA_VOICES-numChannels;
}
}
// pattern command conversion for non-PT formats
if (modFormat == FORMAT_STK || modFormat == FORMAT_FT2 || modFormat == FORMAT_NT || modFormat == FORMAT_HMNT || modFormat == FORMAT_FLT)
{
for (int32_t i = 0; i < numPatterns; i++)
{
note_t *note = newMod->patterns[i];
for (int32_t j = 0; j < MOD_ROWS*4; j++, note++)
{
if (modFormat == FORMAT_NT || modFormat == FORMAT_HMNT)
{
// any Dxx == D00 in NT/HMNT
if (note->command == 0xD)
note->param = 0;
// effect F with param 0x00 does nothing in NT/HMNT
if (note->command == 0xF && note->param == 0)
note->command = 0;
}
else if (modFormat == FORMAT_FLT) // Startrekker (4 channels)
{
if (note->command == 0xE) // remove unsupported "assembly macros" command
{
note->command = 0;
note->param = 0;
}
// Startrekker is always in vblank mode, and limits speed to 0x1F
if (note->command == 0xF && note->param > 0x1F)
note->param = 0x1F;
}
else if (modFormat == FORMAT_STK)
{
// convert STK effects to PT effects
if (!lateSTKVerFlag)
{
// old SoundTracker 1.x commands
if (note->command == 1)
{
// arpeggio
note->command = 0;
}
else if (note->command == 2)
{
// pitch slide
if (note->param & 0xF0)
{
// pitch slide down
note->command = 2;
note->param >>= 4;
}
else if (note->param & 0x0F)
{
// pitch slide up
note->command = 1;
}
}
}
else
{
// "DFJ SoundTracker II" or later
// TODO: This needs more detection and is NOT correct!
if (note->command == 0xD)
{
if (veryLateSTKVerFlag) // "DFJ SoundTracker III" or later
{
// pattern break w/ no param (param must be cleared to fix some songs)
note->param = 0;
}
else
{
// volume slide
note->command = 0xA;
}
}
}
// effect F with param 0x00 does nothing in UST/STK (I think?)
if (note->command == 0xF && note->param == 0)
note->command = 0;
}
// remove sample-trashing effects that were only present in ProTracker
// remove E8x (Karplus-Strong in ProTracker)
if (note->command == 0xE && (note->param >> 4) == 0x8)
{
note->command = 0;
note->param = 0;
}
// remove EFx (Invert Loop in ProTracker)
if (note->command == 0xE && (note->param >> 4) == 0xF)
{
note->command = 0;
note->param = 0;
}
}
}
}
newMod->sampleData = allocMemForAllSamples();
if (newMod->sampleData == NULL)
{
statusOutOfMemory();
goto modLoadError;
}
// set sample data offsets (sample data = one huge buffer to rule them all)
for (int32_t i = 0; i < MOD_SAMPLES; i++)
newMod->samples[i].offset = config.maxSampleLength * i;
// load sample data
int32_t numSamples = (modFormat == FORMAT_STK) ? 15 : 31;
s = newMod->samples;
for (int32_t i = 0; i < numSamples; i++, s++)
{
/* For Ultimate SoundTracker modules, only the loop area of a looped sample is played.
** Skip loading of eventual data present before loop start.
*/
if (modFormat == FORMAT_STK && s->loopStart > 0 && s->loopLength < s->length)
{
s->length -= s->loopStart;
mseek(m, s->loopStart, SEEK_CUR);
s->loopStart = 0;
}
/* We don't support loading samples bigger than 65534 bytes in our PT2 clone,
** so skip overflown data in .MOD file if present.
*/
int32_t bytesToSkip = 0;
if (realSampleLengths[i] > config.maxSampleLength)
bytesToSkip = realSampleLengths[i] - config.maxSampleLength;
// For Ultimate SoundTracker modules, don't load sample data after loop end
int32_t loopEnd = s->loopStart + s->loopLength;
if (modFormat == FORMAT_STK && loopEnd > 2 && s->length > loopEnd)
{
bytesToSkip += s->length-loopEnd;
s->length = loopEnd;
}
mread(&newMod->sampleData[s->offset], 1, s->length, m);
if (bytesToSkip > 0)
mseek(m, bytesToSkip, SEEK_CUR);
// clear first two bytes of non-looping samples to prevent beep after sample has been played
if (s->length >= 2 && loopEnd <= 2)
{
newMod->sampleData[s->offset+0] = 0;
newMod->sampleData[s->offset+1] = 0;
}
// some modules are broken like this, adjust sample length if possible (this is ok if we have room)
if (s->length > 0 && s->loopLength > 2 && s->loopStart+s->loopLength > s->length)
{
int32_t loopOverflowVal = (s->loopStart + s->loopLength) - s->length;
if (s->length+loopOverflowVal <= config.maxSampleLength)
{
s->length += loopOverflowVal; // this is safe, we're allocating 65534 bytes per sample slot
}
else
{
s->loopStart = 0;
s->loopLength = 2;
}
}
}
mclose(&m);
free(modBuffer);
initializeModuleChannels(newMod);
return newMod;
modLoadError:
if (m != NULL)
mclose(&m);
if (modBuffer != NULL)
free(modBuffer);
if (newMod != NULL)
{
for (int32_t i = 0; i < MAX_PATTERNS; i++)
{
if (newMod->patterns[i] != NULL)
free(newMod->patterns[i]);
}
free(newMod);
}
return NULL;
}
static MEMFILE *mopen(const uint8_t *src, uint32_t length)
{
if (src == NULL || length == 0)
return NULL;
MEMFILE *b = (MEMFILE *)malloc(sizeof (MEMFILE));
if (b == NULL)
return NULL;
b->_base = (uint8_t *)src;
b->_ptr = (uint8_t *)src;
b->_cnt = length;
b->_bufsiz = length;
b->_eof = false;
return b;
}
static void mclose(MEMFILE **buf)
{
if (*buf != NULL)
{
free(*buf);
*buf = NULL;
}
}
static int32_t mgetc(MEMFILE *buf)
{
if (buf == NULL || buf->_ptr == NULL || buf->_cnt <= 0)
return 0;
int32_t b = *buf->_ptr;
buf->_cnt--;
buf->_ptr++;
if (buf->_cnt <= 0)
{
buf->_ptr = buf->_base + buf->_bufsiz;
buf->_cnt = 0;
buf->_eof = true;
}
return (int32_t)b;
}
static size_t mread(void *buffer, size_t size, size_t count, MEMFILE *buf)
{
if (buf == NULL || buf->_ptr == NULL)
return 0;
size_t wrcnt = size * count;
if (size == 0 || buf->_eof)
return 0;
int32_t pcnt = (buf->_cnt > (uint32_t)wrcnt) ? (uint32_t)wrcnt : buf->_cnt;
memcpy(buffer, buf->_ptr, pcnt);
buf->_cnt -= pcnt;
buf->_ptr += pcnt;
if (buf->_cnt <= 0)
{
buf->_ptr = buf->_base + buf->_bufsiz;
buf->_cnt = 0;
buf->_eof = true;
}
return pcnt / size;
}
static void mseek(MEMFILE *buf, int32_t offset, int32_t whence)
{
if (buf == NULL)
return;
if (buf->_base)
{
switch (whence)
{
case SEEK_SET: buf->_ptr = buf->_base + offset; break;
case SEEK_CUR: buf->_ptr += offset; break;
case SEEK_END: buf->_ptr = buf->_base + buf->_bufsiz + offset; break;
default: break;
}
buf->_eof = false;
if (buf->_ptr >= buf->_base+buf->_bufsiz)
{
buf->_ptr = buf->_base + buf->_bufsiz;
buf->_eof = true;
}
buf->_cnt = (uint32_t)((buf->_base + buf->_bufsiz) - buf->_ptr);
}
}
static void mrewind(MEMFILE *buf)
{
mseek(buf, 0, SEEK_SET);
}
/* PowerPacker unpack code taken from Heikki Orsila's amigadepack. Seems to have no license,
** so I'll assume it fits into BSD 3-Clause. If not, feel free to contact me at my email
** address found at the bottom of 16-bits.org.
**
** Modified by 8bitbubsy (me).
*/
#define PP_READ_BITS(nbits, var) \
bitCnt = (nbits); \
while (bitsLeft < bitCnt) \
{ \
if (bufSrc < src) \
return false; \
bitBuffer |= ((*--bufSrc) << bitsLeft); \
bitsLeft += 8; \
} \
(var) = 0; \
bitsLeft -= bitCnt; \
while (bitCnt--) \
{ \
(var) = ((var) << 1) | (bitBuffer & 1); \
bitBuffer >>= 1; \
} \
static uint8_t ppdecrunch(uint8_t *src, uint8_t *dst, uint8_t *offsetLens, uint32_t srcLen, uint32_t dstLen, uint8_t skipBits)
{
uint8_t bitCnt;
uint32_t x, todo, offset;
if (src == NULL || dst == NULL || offsetLens == NULL)
return false;
uint8_t bitsLeft = 0;
uint32_t bitBuffer = 0;
uint32_t written = 0;
uint8_t *bufSrc = src + srcLen;
uint8_t *out = dst + dstLen;
uint8_t *dstEnd = out;
PP_READ_BITS(skipBits, x);
while (written < dstLen)
{
PP_READ_BITS(1, x);
if (x == 0)
{
todo = 1;
do
{
PP_READ_BITS(2, x);
todo += x;
}
while (x == 3);
while (todo--)
{
PP_READ_BITS(8, x);
if (out <= dst)
return false;
*--out = (uint8_t)x;
written++;
}
if (written == dstLen)
break;
}
PP_READ_BITS(2, x);
uint32_t offBits = offsetLens[x];
todo = x + 2;
if (x == 3)
{
PP_READ_BITS(1, x);
if (x == 0) offBits = 7;
PP_READ_BITS((uint8_t)offBits, offset);
do
{
PP_READ_BITS(3, x);
todo += x;
}
while (x == 7);
}
else
{
PP_READ_BITS((uint8_t)offBits, offset);
}
if (out+offset >= dstEnd)
return false;
while (todo--)
{
x = out[offset];
if (out <= dst)
return false;
*--out = (uint8_t)x;
written++;
}
}
return true;
}
void setupLoadedMod(void)
{
// setup GUI text pointers
for (int32_t i = 0; i < MOD_SAMPLES; i++)
{
song->samples[i].volumeDisp = &song->samples[i].volume;
song->samples[i].lengthDisp = &song->samples[i].length;
song->samples[i].loopStartDisp = &song->samples[i].loopStart;
song->samples[i].loopLengthDisp = &song->samples[i].loopLength;
fillSampleRedoBuffer((uint8_t)i);
}
modSetPos(0, 0);
modSetPattern(0); // set pattern to 00 instead of first order's pattern
editor.currEditPatternDisp = &song->currPattern;
editor.currPosDisp = &song->currOrder;
editor.currPatternDisp = &song->header.order[0];
editor.currPosEdPattDisp = &song->header.order[0];
editor.currLengthDisp = &song->header.numOrders;
// calculate MOD size
ui.updateSongSize = true;
editor.muted[0] = false;
editor.muted[1] = false;
editor.muted[2] = false;
editor.muted[3] = false;
editor.editMoveAdd = 1;
editor.currSample = 0;
editor.musicTime64 = 0;
editor.modLoaded = true;
editor.blockMarkFlag = false;
editor.sampleZero = false;
editor.hiLowInstr = 0;
// disable LED filter after module load (real PT doesn't do this)
setLEDFilter(false);
updateWindowTitle(MOD_NOT_MODIFIED);
editor.timingMode = TEMPO_MODE_CIA;
updateReplayerTimingMode();
modSetSpeed(6);
modSetTempo(song->header.initialTempo, false); // 125 for normal MODs, custom value for certain STK/UST MODs
updateCurrSample();
editor.samplePos = 0;
updateSamplePos();
}
void loadModFromArg(char *arg)
{
ui.introTextShown = false;
statusAllRight();
uint32_t filenameLen = (uint32_t)strlen(arg);
UNICHAR *filenameU = (UNICHAR *)calloc(filenameLen + 2, sizeof (UNICHAR));
if (filenameU == NULL)
{
statusOutOfMemory();
return;
}
#ifdef _WIN32
MultiByteToWideChar(CP_UTF8, 0, arg, -1, filenameU, filenameLen);
#else
strcpy(filenameU, arg);
#endif
module_t *newSong = modLoad(filenameU);
if (newSong != NULL)
{
song->loaded = false;
modFree();
song = newSong;
setupLoadedMod();
song->loaded = true;
}
else
{
editor.errorMsgActive = true;
editor.errorMsgBlock = true;
editor.errorMsgCounter = 0;
// status/error message is set in the mod loader
setErrPointer();
}
free(filenameU);
}
static bool testExtension(char *ext, uint8_t extLen, char *fullPath)
{
// checks for EXT.filename and filename.EXT
extLen++; // add one to length (dot)
char *fileName = strrchr(fullPath, DIR_DELIMITER);
if (fileName != NULL)
fileName++;
else
fileName = fullPath;
uint32_t fileNameLen = (uint32_t)strlen(fileName);
if (fileNameLen >= extLen)
{
char begStr[8], endStr[8];
sprintf(begStr, "%s.", ext);
if (!_strnicmp(begStr, fileName, extLen))
return true;
sprintf(endStr, ".%s", ext);
if (!_strnicmp(endStr, fileName + (fileNameLen - extLen), extLen))
return true;
}
return false;
}
void loadDroppedFile(char *fullPath, uint32_t fullPathLen, bool autoPlay, bool songModifiedCheck)
{
// don't allow drag n' drop if the tracker is busy
if (ui.pointerMode == POINTER_MODE_MSG1 || diskop.isFilling ||
editor.mod2WavOngoing || editor.pat2SmpOngoing ||
ui.samplerFiltersBoxShown || ui.samplerVolBoxShown || ui.samplingBoxShown)
{
return;
}
char *ansiName = (char *)calloc(fullPathLen + 10, sizeof (char));
if (ansiName == NULL)
{
statusOutOfMemory();
return;
}
UNICHAR *fullPathU = (UNICHAR *)calloc(fullPathLen + 2, sizeof (UNICHAR));
if (fullPathU == NULL)
{
free(ansiName);
statusOutOfMemory();
return;
}
#ifdef _WIN32
MultiByteToWideChar(CP_UTF8, 0, fullPath, -1, fullPathU, fullPathLen);
#else
strcpy(fullPathU, fullPath);
#endif
unicharToAnsi(ansiName, fullPathU, fullPathLen);
// make a new pointer point to filename (strip path)
char *fileName = strrchr(ansiName, DIR_DELIMITER);
if (fileName != NULL)
fileName++;
else
fileName = ansiName;
// check if the file extension is a module (FIXME: check module by content instead..?)
bool isMod = false;
if (testExtension("MOD", 3, fileName)) isMod = true;
else if (testExtension("M15", 3, fileName)) isMod = true;
else if (testExtension("STK", 3, fileName)) isMod = true;
else if (testExtension("NST", 3, fileName)) isMod = true;
else if (testExtension("UST", 3, fileName)) isMod = true;
else if (testExtension("PP", 2, fileName)) isMod = true;
else if (testExtension("NT", 2, fileName)) isMod = true;
if (isMod)
{
if (songModifiedCheck && song->modified)
{
// de-minimize window and set focus so that the user sees the message box
SDL_RestoreWindow(video.window);
SDL_RaiseWindow(video.window);
if (!askBox(ASKBOX_YES_NO, "SONG IS UNSAVED !"))
goto DropExit;
}
module_t *newSong = modLoad(fullPathU);
if (newSong != NULL)
{
uint8_t oldMode = editor.currMode;
uint8_t oldPlayMode = editor.playMode;
modStop();
modFree();
song = newSong;
setupLoadedMod();
song->loaded = true;
statusAllRight();
if (autoPlay)
{
editor.playMode = PLAY_MODE_NORMAL;
editor.currMode = MODE_PLAY;
// start normal playback
modPlay(DONT_SET_PATTERN, 0, 0);
pointerSetMode(POINTER_MODE_PLAY, DO_CARRY);
}
else if (oldMode == MODE_PLAY || oldMode == MODE_RECORD)
{
// use last mode
editor.playMode = oldPlayMode;
if (oldPlayMode == PLAY_MODE_PATTERN || oldMode == MODE_RECORD)
modPlay(0, 0, 0);
else
modPlay(DONT_SET_PATTERN, 0, 0);
editor.currMode = oldMode;
if (oldMode == MODE_RECORD)
pointerSetMode(POINTER_MODE_RECORD, DO_CARRY);
else
pointerSetMode(POINTER_MODE_PLAY, DO_CARRY);
}
else
{
// stop playback
editor.playMode = PLAY_MODE_NORMAL;
editor.currMode = MODE_IDLE;
editor.songPlaying = false;
pointerSetMode(POINTER_MODE_IDLE, DO_CARRY);
}
displayMainScreen();
}
else
{
editor.errorMsgActive = true;
editor.errorMsgBlock = true;
editor.errorMsgCounter = 0;
setErrPointer(); // status/error message is set in the mod loader
}
}
else
{
loadSample(fullPathU, fileName);
}
DropExit:
free(ansiName);
free(fullPathU);
}
module_t *createEmptyMod(void)
{
module_t *newMod = (module_t *)calloc(1, sizeof (module_t));
if (newMod == NULL)
goto oom;
for (int32_t i = 0; i < MAX_PATTERNS; i++)
{
newMod->patterns[i] = (note_t *)calloc(1, MOD_ROWS * sizeof (note_t) * PAULA_VOICES);
if (newMod->patterns[i] == NULL)
goto oom;
}
newMod->sampleData = allocMemForAllSamples();
if (newMod->sampleData == NULL)
goto oom;
newMod->header.numOrders = 1;
moduleSample_t *s = newMod->samples;
for (int32_t i = 0; i < MOD_SAMPLES; i++, s++)
{
s->offset = config.maxSampleLength * i;
s->loopLength = 2;
// setup GUI text pointers
s->volumeDisp = &s->volume;
s->lengthDisp = &s->length;
s->loopStartDisp = &s->loopStart;
s->loopLengthDisp = &s->loopLength;
}
initializeModuleChannels(newMod);
// setup GUI text pointers
editor.currEditPatternDisp = &newMod->currPattern;
editor.currPosDisp = &newMod->currOrder;
editor.currPatternDisp = &newMod->header.order[0];
editor.currPosEdPattDisp = &newMod->header.order[0];
editor.currLengthDisp = &newMod->header.numOrders;
ui.updateSongSize = true;
return newMod;
oom:
showErrorMsgBox("Out of memory!");
return NULL;
}