ref: c4b01841033fea3a265f1e33f6c8fde91c2c50f4
dir: /src/ft2_sample_saver.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 <stdint.h>
#include <stdbool.h>
#ifndef _WIN32
#include <unistd.h> // chdir()
#endif
#include "ft2_header.h"
#include "ft2_gui.h"
#include "ft2_sample_ed.h"
#include "ft2_diskop.h"
#include "ft2_mouse.h"
#include "ft2_structs.h"
typedef struct wavHeader_t
{
uint32_t chunkID, chunkSize, format, subchunk1ID, subchunk1Size;
uint16_t audioFormat, numChannels;
uint32_t sampleRate, byteRate;
uint16_t blockAlign, bitsPerSample;
uint32_t subchunk2ID, subchunk2Size;
} wavHeader_t;
typedef struct sampleLoop_t
{
uint32_t dwIdentifier, dwType, dwStart, dwEnd, dwFraction, dwPlayCount;
} sampleLoop_t;
typedef struct samplerChunk_t
{
uint32_t chunkID, chunkSize, dwManufacturer, dwProduct, dwSamplePeriod;
uint32_t dwMIDIUnityNote, dwMIDIPitchFraction, dwSMPTEFormat;
uint32_t dwSMPTEOffset, cSampleLoops, cbSamplerData;
sampleLoop_t loop;
} samplerChunk_t;
typedef struct mptExtraChunk_t
{
uint32_t chunkID, chunkSize, flags;
uint16_t defaultPan, defaultVolume, globalVolume, reserved;
uint8_t vibratoType, vibratoSweep, vibratoDepth, vibratoRate;
} mptExtraChunk_t;
static const char *rangedDataStr = "Ranged data from FT2";
// thread data
static bool saveRangeFlag;
static SDL_Thread *thread;
// restores modified interpolation tap samples after loopEnd (for .RAW/.IFF/.WAV samples after save)
static void fileRestoreFixedSampleData(UNICHAR *filenameU, uint32_t sampleDataOffset, sample_t *s)
{
if (!s->isFixed)
return; // nothing to restore
int32_t sampleFixPos = s->fixedPos;
int32_t sampleFixOffset = 0;
int32_t samplesToWrite = MAX_RIGHT_TAPS;
if (saveRangeFlag)
{
const int32_t markStart = getSampleRangeStart();
const int32_t markEnd = getSampleRangeEnd();
if (markStart > sampleFixPos+MAX_RIGHT_TAPS || markEnd < sampleFixPos)
return; // nothing to do here
if (markStart > sampleFixPos)
{
sampleFixOffset += markStart-sampleFixPos;
samplesToWrite -= markStart-sampleFixPos;
}
sampleFixPos -= markStart;
if (sampleFixPos + samplesToWrite > markEnd)
samplesToWrite = markEnd - sampleFixPos;
if (samplesToWrite < 0 || samplesToWrite > MAX_RIGHT_TAPS || sampleFixPos < 0 || sampleFixOffset < 0 || sampleFixOffset >= MAX_RIGHT_TAPS)
return;
}
FILE* f = UNICHAR_FOPEN(filenameU, "r+"); // open in read+update mode
if (f == NULL)
return;
bool sample16Bit = !!(s->flags & SAMPLE_16BIT);
if (sample16Bit)
fseek(f, sampleDataOffset + (sampleFixPos * 2), SEEK_SET);
else
fseek(f, sampleDataOffset + sampleFixPos, SEEK_SET);
if (sample16Bit)
{
fwrite(&s->fixedSmp[sampleFixOffset], sizeof (int16_t), samplesToWrite, f);
}
else
{
for (int32_t i = 0; i < samplesToWrite; i++)
{
int8_t fixedSmp = (int8_t)s->fixedSmp[sampleFixOffset+i];
if (editor.sampleSaveMode == SMP_SAVE_MODE_WAV) // on 8-bit WAVs the sample data is unsigned
fixedSmp ^= 0x80; // signed -> unsigned
fwrite(&fixedSmp, sizeof (int8_t), 1, f);
}
}
fclose(f);
}
static bool saveRawSample(UNICHAR *filenameU, bool saveRangedData)
{
int8_t *samplePtr;
uint32_t sampleLen;
instr_t *ins = instr[editor.curInstr];
if (ins == NULL || ins->smp[editor.curSmp].dataPtr == NULL || ins->smp[editor.curSmp].length == 0)
{
okBoxThreadSafe(0, "System message", "The sample is empty!", NULL);
return false;
}
sample_t *smp = &instr[editor.curInstr]->smp[editor.curSmp];
bool sample16Bit = !!(smp->flags & SAMPLE_16BIT);
if (saveRangedData)
{
samplePtr = &smp->dataPtr[getSampleRangeStart() << sample16Bit];
sampleLen = getSampleRangeLength();
}
else
{
sampleLen = smp->length;
samplePtr = smp->dataPtr;
}
FILE *f = UNICHAR_FOPEN(filenameU, "wb");
if (f == NULL)
{
okBoxThreadSafe(0, "System message", "General I/O error during saving! Is the file in use?", NULL);
return false;
}
if (fwrite(samplePtr, sampleLen, 1, f) != 1)
{
fclose(f);
okBoxThreadSafe(0, "System message", "Error saving sample: General I/O error!", NULL);
return false;
}
fclose(f);
// restore modified interpolation tap samples after loopEnd
bool loopEnabled = GET_LOOPTYPE(smp->flags) != LOOP_OFF;
if (loopEnabled && smp->length > smp->loopStart+smp->loopLength)
fileRestoreFixedSampleData(filenameU, 0, smp);
editor.diskOpReadDir = true; // force diskop re-read
setMouseBusy(false);
return true;
}
static void iffWriteChunkHeader(FILE *f, char *chunkName, uint32_t chunkLen)
{
fwrite(chunkName, sizeof (int32_t), 1, f);
chunkLen = SWAP32(chunkLen);
fwrite(&chunkLen, sizeof (int32_t), 1, f);
}
static void iffWriteUint32(FILE *f, uint32_t value)
{
value = SWAP32(value);
fwrite(&value, sizeof (int32_t), 1, f);
}
static void iffWriteUint16(FILE *f, uint16_t value)
{
value = SWAP16(value);
fwrite(&value, sizeof (int16_t), 1, f);
}
static void iffWriteUint8(FILE *f, const uint8_t value)
{
fwrite(&value, sizeof (int8_t), 1, f);
}
static void iffWriteChunkData(FILE *f, const void *data, size_t length)
{
fwrite(data, sizeof (int8_t), length, f);
if (length & 1) fputc(0, f); // write pad byte if chunk size is uneven
}
static bool saveIFFSample(UNICHAR *filenameU, bool saveRangedData)
{
char *smpNamePtr;
int8_t *samplePtr;
uint32_t sampleLen, smpNameLen, chunkLen;
instr_t *ins = instr[editor.curInstr];
if (ins == NULL || ins->smp[editor.curSmp].dataPtr == NULL || ins->smp[editor.curSmp].length == 0)
{
okBoxThreadSafe(0, "System message", "The sample is empty!", NULL);
return false;
}
sample_t *smp = &instr[editor.curInstr]->smp[editor.curSmp];
FILE *f = UNICHAR_FOPEN(filenameU, "wb");
if (f == NULL)
{
okBoxThreadSafe(0, "System message", "General I/O error during saving! Is the file in use?", NULL);
return false;
}
bool sample16Bit = !!(smp->flags & SAMPLE_16BIT);
if (saveRangedData)
{
samplePtr = &smp->dataPtr[getSampleRangeStart() << sample16Bit];
sampleLen = getSampleRangeLength();
}
else
{
sampleLen = smp->length;
samplePtr = smp->dataPtr;
}
// "FORM" chunk
iffWriteChunkHeader(f, "FORM", 0); // "FORM" chunk size is overwritten later
iffWriteUint32(f, sample16Bit ? 0x31365356 : 0x38535658); // bitdepth - "16SV" (16-bit) or "8SVX" (8-bit)
// "VHDR" chunk
iffWriteChunkHeader(f, "VHDR", 20);
if (!saveRangedData && GET_LOOPTYPE(smp->flags) != LOOP_OFF)
{
iffWriteUint32(f, smp->loopStart << sample16Bit); // oneShotHiSamples
iffWriteUint32(f, smp->loopLength << sample16Bit); // repeatHiSamples
}
else
{
iffWriteUint32(f, 0); // oneShotHiSamples
iffWriteUint32(f, 0); // repeatHiSamples
}
iffWriteUint32(f, 0); // samplesPerHiCycle
// samplesPerSec
uint32_t tmp32 = getSampleMiddleCRate(smp);
if (tmp32 == 0 || tmp32 > 65535) tmp32 = 16726;
iffWriteUint16(f, (uint16_t)tmp32);
iffWriteUint8(f, 1); // ctOctave (number of samples)
iffWriteUint8(f, 0); // sCompression
iffWriteUint32(f, smp->volume * 1024); // volume (max: 65536/0x10000)
// "NAME" chunk
if (saveRangedData)
{
smpNamePtr = (char *)rangedDataStr;
smpNameLen = (uint32_t)strlen(rangedDataStr);
}
else
{
smpNamePtr = smp->name;
smpNameLen = 0;
while (smpNameLen < 22)
{
if (smpNamePtr[smpNameLen] == '\0')
break;
smpNameLen++;
}
}
// "NAME" chunk
chunkLen = smpNameLen;
if (chunkLen > 0)
{
iffWriteChunkHeader(f, "NAME", chunkLen);
iffWriteChunkData(f, smpNamePtr, chunkLen);
}
// "ANNO" chunk (we put the program name here)
chunkLen = sizeof (PROG_NAME_STR) - 1;
iffWriteChunkHeader(f, "ANNO", chunkLen);
iffWriteChunkData(f, PROG_NAME_STR, chunkLen);
// "BODY" chunk
chunkLen = sampleLen << sample16Bit;
iffWriteChunkHeader(f, "BODY", chunkLen);
const uint32_t sampleDataPos = ftell(f);
iffWriteChunkData(f, samplePtr, chunkLen);
// go back and fill in "FORM" chunk size
chunkLen = ftell(f) - 8;
fseek(f, 4, SEEK_SET);
iffWriteUint32(f, chunkLen);
fclose(f);
// restore modified interpolation tap samples after loopEnd
bool loopEnabled = GET_LOOPTYPE(smp->flags) != LOOP_OFF;
if (loopEnabled && smp->length > smp->loopStart+smp->loopLength)
fileRestoreFixedSampleData(filenameU, sampleDataPos, smp);
editor.diskOpReadDir = true; // force diskop re-read
setMouseBusy(false);
return true;
}
static bool saveWAVSample(UNICHAR *filenameU, bool saveRangedData)
{
char *smpNamePtr;
int8_t *samplePtr;
uint32_t i, sampleLen, riffChunkSize, smpNameLen, tmpLen;
wavHeader_t wavHeader;
samplerChunk_t samplerChunk;
mptExtraChunk_t mptExtraChunk;
instr_t *ins = instr[editor.curInstr];
if (ins == NULL || ins->smp[editor.curSmp].dataPtr == NULL || ins->smp[editor.curSmp].length == 0)
{
okBoxThreadSafe(0, "System message", "The sample is empty!", NULL);
return false;
}
sample_t *smp = &ins->smp[editor.curSmp];
FILE *f = UNICHAR_FOPEN(filenameU, "wb");
if (f == NULL)
{
okBoxThreadSafe(0, "System message", "General I/O error during saving! Is the file in use?", NULL);
return false;
}
bool sample16Bit = !!(smp->flags & SAMPLE_16BIT);
if (saveRangedData)
{
samplePtr = &smp->dataPtr[getSampleRangeStart() << sample16Bit];
sampleLen = getSampleRangeLength();
}
else
{
sampleLen = smp->length;
samplePtr = smp->dataPtr;
}
const uint8_t sampleBitDepth = sample16Bit ? 16 : 8;
wavHeader.chunkID = 0x46464952; // "RIFF"
wavHeader.chunkSize = 0; // is filled later
wavHeader.format = 0x45564157; // "WAVE"
wavHeader.subchunk1ID = 0x20746D66; // "fmt "
wavHeader.subchunk1Size = 16;
wavHeader.audioFormat = 1;
wavHeader.numChannels = 1;
wavHeader.sampleRate = getSampleMiddleCRate(smp);
wavHeader.byteRate = (wavHeader.sampleRate * wavHeader.numChannels * sampleBitDepth) / 8;
wavHeader.blockAlign = (wavHeader.numChannels * sampleBitDepth) / 8;
wavHeader.bitsPerSample = sampleBitDepth;
wavHeader.subchunk2ID = 0x61746164; // "data"
wavHeader.subchunk2Size = sampleLen << sample16Bit;
// write main header
fwrite(&wavHeader, sizeof (wavHeader_t), 1, f);
// write sample data
const uint32_t sampleDataPos = ftell(f);
if (sampleBitDepth == 16)
{
fwrite((int16_t *)samplePtr, sizeof (int16_t), sampleLen, f);
}
else
{
for (i = 0; i < sampleLen; i++)
fputc(samplePtr[i] ^ 0x80, f); // write as unsigned 8-bit data
}
if (wavHeader.subchunk2Size & 1)
fputc(0, f); // write pad byte if chunk size is uneven
// write "smpl" chunk if loop is enabled
if (!saveRangedData && GET_LOOPTYPE(smp->flags) != LOOP_OFF)
{
memset(&samplerChunk, 0, sizeof (samplerChunk));
samplerChunk.chunkID = 0x6C706D73; // "smpl"
samplerChunk.chunkSize = sizeof (samplerChunk) - 4 - 4;
samplerChunk.dwSamplePeriod = 1000000000 / wavHeader.sampleRate;
samplerChunk.dwMIDIUnityNote = 60; // 60 = MIDI middle-C
samplerChunk.cSampleLoops = 1;
samplerChunk.loop.dwType = GET_LOOPTYPE(smp->flags)-1; // 0 = forward, 1 = ping-pong
samplerChunk.loop.dwStart = smp->loopStart;
samplerChunk.loop.dwEnd = (smp->loopStart + smp->loopLength) - 1;
fwrite(&samplerChunk, sizeof (samplerChunk), 1, f);
if (samplerChunk.chunkSize & 1)
fputc(0, f); // write pad byte if chunk size is uneven
}
// write modplug tracker "xtra" chunk
if (!saveRangedData)
{
memset(&mptExtraChunk, 0, sizeof (mptExtraChunk));
mptExtraChunk.chunkID = 0x61727478; // "xtra"
mptExtraChunk.chunkSize = sizeof (mptExtraChunk) - 4 - 4;
mptExtraChunk.flags = 0x20; // set pan flag
mptExtraChunk.defaultPan = smp->panning; // 0..255
mptExtraChunk.defaultVolume = smp->volume * 4; // 0..256
mptExtraChunk.globalVolume = 64; // 0..64
mptExtraChunk.vibratoType = ins->autoVibType; // 0..3 0 = sine, 1 = square, 2 = ramp up, 3 = ramp down
mptExtraChunk.vibratoSweep = ins->autoVibSweep; // 0..255
mptExtraChunk.vibratoDepth = ins->autoVibDepth; // 0..15
mptExtraChunk.vibratoRate = ins->autoVibRate; // 0..63
fwrite(&mptExtraChunk, sizeof (mptExtraChunk), 1, f);
if (mptExtraChunk.chunkSize & 1)
fputc(0, f); // write pad byte if chunk size is uneven
}
// write LIST->INFO->INAM chunk
if (saveRangedData)
{
smpNamePtr = (char *)rangedDataStr;
smpNameLen = (uint32_t)strlen(smpNamePtr);
}
else
{
smpNamePtr = smp->name;
smpNameLen = 0;
while (smpNameLen < 22)
{
if (smpNamePtr[smpNameLen] == '\0')
break;
smpNameLen++;
}
}
const uint32_t progNameLen = sizeof (PROG_NAME_STR) - 1;
tmpLen = 4 + (4 + 4) + (progNameLen + 1 + ((progNameLen + 1) & 1));
if (smpNameLen > 0)
tmpLen += ((4 + 4) + (progNameLen + 1 + ((progNameLen + 1) & 1)));
fwrite("LIST", sizeof (int32_t), 1, f);
fwrite(&tmpLen, sizeof (int32_t), 1, f);
fwrite("INFO", sizeof (int32_t), 1, f);
if (smpNameLen > 0)
{
tmpLen = smpNameLen + 1;
fwrite("INAM", sizeof (int32_t), 1, f);
fwrite(&tmpLen, sizeof (int32_t), 1, f);
fwrite(smpNamePtr, 1, smpNameLen, f);
fputc(0, f); // string termination
if (tmpLen & 1)
fputc(0, f); // pad byte
}
tmpLen = progNameLen + 1;
fwrite("ISFT", sizeof (int32_t), 1, f);
fwrite(&tmpLen, sizeof (int32_t), 1, f);
fwrite(PROG_NAME_STR, 1, progNameLen, f);
fputc(0, f); // string termination
if (tmpLen & 1)
fputc(0, f); // pad byte
// go back and fill in "RIFF" chunk size
riffChunkSize = ftell(f) - 8;
fseek(f, 4, SEEK_SET);
fwrite(&riffChunkSize, sizeof (int32_t), 1, f);
fclose(f);
// restore modified interpolation tap samples after loopEnd
bool loopEnabled = GET_LOOPTYPE(smp->flags) != LOOP_OFF;
if (loopEnabled && smp->length > smp->loopStart+smp->loopLength)
fileRestoreFixedSampleData(filenameU, sampleDataPos, smp);
editor.diskOpReadDir = true; // force diskop re-read
setMouseBusy(false);
return true;
}
static int32_t SDLCALL saveSampleThread(void *ptr)
{
if (editor.tmpFilenameU == NULL)
{
okBoxThreadSafe(0, "System message", "General I/O error during saving! Is the file in use?", NULL);
return false;
}
const UNICHAR *oldPathU = getDiskOpCurPath();
// in "save range mode", we must enter the sample directory
if (saveRangeFlag)
UNICHAR_CHDIR(getDiskOpSmpPath());
switch (editor.sampleSaveMode)
{
case SMP_SAVE_MODE_RAW: saveRawSample(editor.tmpFilenameU, saveRangeFlag); break;
case SMP_SAVE_MODE_IFF: saveIFFSample(editor.tmpFilenameU, saveRangeFlag); break;
default: case SMP_SAVE_MODE_WAV: saveWAVSample(editor.tmpFilenameU, saveRangeFlag); break;
}
// set back old working directory if we changed it
if (saveRangeFlag)
UNICHAR_CHDIR(oldPathU);
return true;
(void)ptr;
}
void saveSample(UNICHAR *filenameU, bool saveAsRange)
{
saveRangeFlag = saveAsRange;
UNICHAR_STRCPY(editor.tmpFilenameU, filenameU);
mouseAnimOn();
thread = SDL_CreateThread(saveSampleThread, NULL, NULL);
if (thread == NULL)
{
okBoxThreadSafe(0, "System message", "Couldn't create thread!", NULL);
return;
}
SDL_DetachThread(thread);
}