ref: fa8fc530f8604c935804008cec6e2c89702c6f18
dir: /src/ft2_sample_ed_features.c/
/* This file contains the routines for the following sample editor functions:
** - Resampler
** - Echo
** - Mix
** - Volume
**/
// 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>
#include <math.h>
#include "ft2_header.h"
#include "ft2_mouse.h"
#include "ft2_audio.h"
#include "ft2_gui.h"
#include "ft2_events.h"
#include "ft2_video.h"
#include "ft2_inst_ed.h"
#include "ft2_sample_ed.h"
#include "ft2_keyboard.h"
#include "ft2_tables.h"
#include "ft2_structs.h"
static volatile bool stopThread;
static int8_t smpEd_RelReSmp, mix_Balance = 50;
static bool echo_AddMemory, exitFlag, outOfMemory;
static int16_t vol_StartVol = 100, vol_EndVol = 100, echo_nEcho = 1, echo_VolChange = 30;
static int32_t echo_Distance = 0x100;
static SDL_Thread *thread;
static void pbExit(void)
{
ui.sysReqShown = false;
exitFlag = true;
}
static void windowOpen(void)
{
ui.sysReqShown = true;
ui.sysReqEnterPressed = false;
unstuckLastUsedGUIElement();
SDL_EventState(SDL_DROPFILE, SDL_DISABLE);
}
static void windowClose(bool rewriteSample)
{
SDL_EventState(SDL_DROPFILE, SDL_ENABLE);
if (exitFlag || rewriteSample)
writeSample(true);
else
updateNewSample();
mouseAnimOff();
}
static void sbSetResampleTones(uint32_t pos)
{
if (smpEd_RelReSmp != (int8_t)(pos - 36))
smpEd_RelReSmp = (int8_t)(pos - 36);
}
static void pbResampleTonesDown(void)
{
if (smpEd_RelReSmp > -36)
smpEd_RelReSmp--;
}
static void pbResampleTonesUp(void)
{
if (smpEd_RelReSmp < 36)
smpEd_RelReSmp++;
}
static int32_t SDLCALL resampleThread(void *ptr)
{
int8_t *p1, *p2, *src8, *dst8;
int16_t *src16, *dst16;
uint32_t newLen, mask, resampleLen;
uint64_t posFrac64, delta64;
double dNewLen, dLenMul;
sampleTyp *s;
(void)ptr;
if (instr[editor.curInstr] == NULL)
return true;
s = &instr[editor.curInstr]->samp[editor.curSmp];
mask = (s->typ & 16) ? 0xFFFFFFFE : 0xFFFFFFFF;
dLenMul = exp2(smpEd_RelReSmp * (1.0 / 12.0));
dNewLen = s->len * dLenMul;
if (dNewLen > (double)MAX_SAMPLE_LEN)
dNewLen = (double)MAX_SAMPLE_LEN;
newLen = (int32_t)dNewLen & mask;
p2 = (int8_t *)malloc(newLen + LOOP_FIX_LEN);
if (p2 == NULL)
{
outOfMemory = true;
setMouseBusy(false);
ui.sysReqShown = false;
return true;
}
int8_t *newPtr = p2 + SMP_DAT_OFFSET;
p1 = s->pek;
// don't use the potentially clamped newLen value here
delta64 = ((int64_t)s->len << 32) / (int64_t)(s->len * dLenMul); // 32.32 fixed point delta
posFrac64 = 0; // 32.32 fixed point position.fraction
pauseAudio();
restoreSample(s);
if (newLen > 0)
{
if (s->typ & 16)
{
src16 = (int16_t *)p1;
dst16 = (int16_t *)newPtr;
resampleLen = newLen >> 1;
for (uint32_t i = 0; i < resampleLen; i++)
{
dst16[i] = src16[posFrac64 >> 32];
posFrac64 += delta64;
}
}
else
{
src8 = p1;
dst8 = newPtr;
for (uint32_t i = 0; i < newLen; i++)
{
dst8[i] = src8[posFrac64 >> 32];
posFrac64 += delta64;
}
}
}
free(s->origPek);
s->relTon = CLAMP(s->relTon + smpEd_RelReSmp, -48, 71);
s->len = newLen & mask;
s->origPek = p2;
s->pek = s->origPek + SMP_DAT_OFFSET;
s->repS = (int32_t)(s->repS * dLenMul);
s->repL = (int32_t)(s->repL * dLenMul);
s->repS &= mask;
s->repL &= mask;
if (s->repS >= s->len)
s->repS = s->len-1;
if (s->repS+s->repL > s->len)
s->repL = s->len - s->repS;
if (s->typ & 16)
{
s->len &= 0xFFFFFFFE;
s->repS &= 0xFFFFFFFE;
s->repL &= 0xFFFFFFFE;
}
if (s->repL <= 0)
s->typ &= ~3; // disable loop
fixSample(s);
resumeAudio();
setSongModifiedFlag();
setMouseBusy(false);
ui.sysReqShown = false;
return true;
}
static void pbDoResampling(void)
{
mouseAnimOn();
thread = SDL_CreateThread(resampleThread, NULL, NULL);
if (thread == NULL)
{
okBox(0, "System message", "Couldn't create thread!");
return;
}
SDL_DetachThread(thread);
}
static void drawResampleBox(void)
{
char sign;
const int16_t x = 209;
const int16_t y = 230;
const int16_t w = 214;
const int16_t h = 54;
uint16_t val;
uint32_t mask;
double dNewLen, dLenMul;
sampleTyp *s;
// main fill
fillRect(x + 1, y + 1, w - 2, h - 2, PAL_BUTTONS);
// outer border
vLine(x, y, h - 1, PAL_BUTTON1);
hLine(x + 1, y, w - 2, PAL_BUTTON1);
vLine(x + w - 1, y, h, PAL_BUTTON2);
hLine(x, y + h - 1, w - 1, PAL_BUTTON2);
// inner border
vLine(x + 2, y + 2, h - 5, PAL_BUTTON2);
hLine(x + 3, y + 2, w - 6, PAL_BUTTON2);
vLine(x + w - 3, y + 2, h - 4, PAL_BUTTON1);
hLine(x + 2, y + h - 3, w - 4, PAL_BUTTON1);
s = &instr[editor.curInstr]->samp[editor.curSmp];
mask = (s->typ & 16) ? 0xFFFFFFFE : 0xFFFFFFFF;
dLenMul = exp2(smpEd_RelReSmp * (1.0 / 12.0));
dNewLen = s->len * dLenMul;
if (dNewLen > (double)MAX_SAMPLE_LEN)
dNewLen = (double)MAX_SAMPLE_LEN;
textOutShadow(215, 236, PAL_FORGRND, PAL_BUTTON2, "Rel. h.tones");
textOutShadow(215, 250, PAL_FORGRND, PAL_BUTTON2, "New sample size");
hexOut(361, 250, PAL_FORGRND, (uint32_t)dNewLen & mask, 8);
if (smpEd_RelReSmp == 0) sign = ' ';
else if (smpEd_RelReSmp < 0) sign = '-';
else sign = '+';
val = ABS(smpEd_RelReSmp);
if (val > 9)
{
charOut(291, 236, PAL_FORGRND, sign);
charOut(298, 236, PAL_FORGRND, '0' + ((val / 10) % 10));
charOut(305, 236, PAL_FORGRND, '0' + (val % 10));
}
else
{
charOut(298, 236, PAL_FORGRND, sign);
charOut(305, 236, PAL_FORGRND, '0' + (val % 10));
}
}
static void setupResampleBoxWidgets(void)
{
pushButton_t *p;
scrollBar_t *s;
// "Apply" pushbutton
p = &pushButtons[0];
memset(p, 0, sizeof (pushButton_t));
p->caption = "Apply";
p->x = 214;
p->y = 264;
p->w = 73;
p->h = 16;
p->callbackFuncOnUp = pbDoResampling;
p->visible = true;
// "Exit" pushbutton
p = &pushButtons[1];
memset(p, 0, sizeof (pushButton_t));
p->caption = "Exit";
p->x = 345;
p->y = 264;
p->w = 73;
p->h = 16;
p->callbackFuncOnUp = pbExit;
p->visible = true;
// scrollbar buttons
p = &pushButtons[2];
memset(p, 0, sizeof (pushButton_t));
p->caption = ARROW_LEFT_STRING;
p->x = 314;
p->y = 234;
p->w = 23;
p->h = 13;
p->preDelay = 1;
p->delayFrames = 3;
p->callbackFuncOnDown = pbResampleTonesDown;
p->visible = true;
p = &pushButtons[3];
memset(p, 0, sizeof (pushButton_t));
p->caption = ARROW_RIGHT_STRING;
p->x = 395;
p->y = 234;
p->w = 23;
p->h = 13;
p->preDelay = 1;
p->delayFrames = 3;
p->callbackFuncOnDown = pbResampleTonesUp;
p->visible = true;
// echo num scrollbar
s = &scrollBars[0];
memset(s, 0, sizeof (scrollBar_t));
s->x = 337;
s->y = 234;
s->w = 58;
s->h = 13;
s->callbackFunc = sbSetResampleTones;
s->visible = true;
setScrollBarPageLength(0, 1);
setScrollBarEnd(0, 36 * 2);
}
void pbSampleResample(void)
{
uint16_t i;
if (editor.curInstr == 0 ||
instr[editor.curInstr] == NULL ||
instr[editor.curInstr]->samp[editor.curSmp].pek == NULL)
{
return;
}
setupResampleBoxWidgets();
windowOpen();
outOfMemory = false;
exitFlag = false;
while (ui.sysReqShown)
{
readInput();
if (ui.sysReqEnterPressed)
pbDoResampling();
setSyncedReplayerVars();
handleRedrawing();
drawResampleBox();
setScrollBarPos(0, smpEd_RelReSmp + 36, false);
drawCheckBox(0);
for (i = 0; i < 4; i++) drawPushButton(i);
drawScrollBar(0);
flipFrame();
}
for (i = 0; i < 4; i++) hidePushButton(i);
hideScrollBar(0);
windowClose(false);
if (outOfMemory)
okBox(0, "System message", "Not enough memory!");
}
static void cbEchoAddMemory(void)
{
echo_AddMemory ^= 1;
}
static void sbSetEchoNumPos(uint32_t pos)
{
if (echo_nEcho != (int32_t)pos)
echo_nEcho = (int16_t)pos;
}
static void sbSetEchoDistPos(uint32_t pos)
{
if (echo_Distance != (int32_t)pos)
echo_Distance = (int32_t)pos;
}
static void sbSetEchoFadeoutPos(uint32_t pos)
{
if (echo_VolChange != (int32_t)pos)
echo_VolChange = (int16_t)pos;
}
static void pbEchoNumDown(void)
{
if (echo_nEcho > 0)
echo_nEcho--;
}
static void pbEchoNumUp(void)
{
if (echo_nEcho < 1024)
echo_nEcho++;
}
static void pbEchoDistDown(void)
{
if (echo_Distance > 0)
echo_Distance--;
}
static void pbEchoDistUp(void)
{
if (echo_Distance < 16384)
echo_Distance++;
}
static void pbEchoFadeoutDown(void)
{
if (echo_VolChange > 0)
echo_VolChange--;
}
static void pbEchoFadeoutUp(void)
{
if (echo_VolChange < 100)
echo_VolChange++;
}
static int32_t SDLCALL createEchoThread(void *ptr)
{
int8_t *readPtr, *writePtr, *writePtr8, *newPtr;
bool is16Bit;
int16_t *readPtr16, *writePtr16;
int32_t nEchoes, distance, readLen, writeLen, i, j;
int32_t smpOut, volChange, smpMul, echoRead, echoCycle, writeIdx;
int64_t tmp64;
sampleTyp *s;
(void)ptr;
s = &instr[editor.curInstr]->samp[editor.curSmp];
readLen = s->len;
readPtr = s->pek;
is16Bit = (s->typ & 16) ? true : false;
distance = echo_Distance * 16;
// scale value for faster math and suitable rounding for PCM waveforms (DIV -> arithmetic bitshift right)
volChange = (echo_VolChange * 256) / 100; // 0..100 -> 0..256
if (echo_nEcho < 1)
{
ui.sysReqShown = false;
return true;
}
// calculate real number of echoes
j = 32768;
i = 0;
while (i < echo_nEcho && j > 0)
{
j = (j * volChange) >> 8;
i++;
}
nEchoes = i + 1;
if (nEchoes < 1)
{
ui.sysReqShown = false;
return true;
}
// set write length (either original length or full echo length)
writeLen = readLen;
if (echo_AddMemory)
{
tmp64 = (int64_t)distance * (nEchoes - 1);
if (is16Bit)
tmp64 <<= 1;
tmp64 += writeLen;
if (tmp64 > MAX_SAMPLE_LEN)
tmp64 = MAX_SAMPLE_LEN;
writeLen = (int32_t)tmp64;
if (is16Bit)
writeLen &= 0xFFFFFFFE;
}
writePtr = (int8_t *)malloc(writeLen + LOOP_FIX_LEN);
if (writePtr == NULL)
{
outOfMemory = true;
setMouseBusy(false);
ui.sysReqShown = false;
return false;
}
pauseAudio();
restoreSample(s);
writeIdx = 0;
if (is16Bit)
{
readPtr16 = (int16_t *)readPtr;
writePtr16 = (int16_t *)&writePtr[SMP_DAT_OFFSET];
writeLen >>= 1;
readLen >>= 1;
while (writeIdx < writeLen)
{
smpOut = 0;
smpMul = 32768;
echoRead = writeIdx;
echoCycle = nEchoes;
while (!stopThread)
{
if (echoRead < readLen)
smpOut += (readPtr16[echoRead] * smpMul) >> 15;
smpMul = (smpMul * volChange) >> 8;
echoRead -= distance;
echoCycle--;
if (echoRead <= 0 || echoCycle <= 0)
break;
}
CLAMP16(smpOut);
writePtr16[writeIdx++] = (int16_t)smpOut;
}
writeLen <<= 1;
}
else
{
writePtr8 = writePtr + SMP_DAT_OFFSET;
while (writeIdx < writeLen)
{
smpOut = 0;
smpMul = 32768;
echoRead = writeIdx;
echoCycle = nEchoes;
while (!stopThread)
{
if (echoRead < readLen)
smpOut += (readPtr[echoRead] * smpMul) >> (15-8);
smpMul = (smpMul * volChange) >> 8;
echoRead -= distance;
echoCycle--;
if (echoRead <= 0 || echoCycle <= 0)
break;
}
CLAMP16(smpOut);
writePtr8[writeIdx++] = (int8_t)(smpOut >> 8);
}
}
free(s->origPek);
if (stopThread)
{
writeLen = writeIdx;
newPtr = (int8_t *)realloc(writePtr, writeIdx + LOOP_FIX_LEN);
if (newPtr != NULL)
{
s->origPek = newPtr;
s->pek = s->origPek + SMP_DAT_OFFSET;
}
else
{
if (writePtr != NULL)
free(writePtr);
s->origPek = s->pek = NULL;
writeLen = 0;
}
editor.updateCurSmp = true;
}
else
{
s->origPek = writePtr;
s->pek = s->origPek + SMP_DAT_OFFSET;
}
if (is16Bit)
writeLen &= 0xFFFFFFFE;
s->len = writeLen;
fixSample(s);
resumeAudio();
setSongModifiedFlag();
setMouseBusy(false);
ui.sysReqShown = false;
return true;
}
static void pbCreateEcho(void)
{
stopThread = false;
mouseAnimOn();
thread = SDL_CreateThread(createEchoThread, NULL, NULL);
if (thread == NULL)
{
okBox(0, "System message", "Couldn't create thread!");
return;
}
SDL_DetachThread(thread);
}
static void drawEchoBox(void)
{
const int16_t x = 171;
const int16_t y = 220;
const int16_t w = 291;
const int16_t h = 66;
// main fill
fillRect(x + 1, y + 1, w - 2, h - 2, PAL_BUTTONS);
// outer border
vLine(x, y, h - 1, PAL_BUTTON1);
hLine(x + 1, y, w - 2, PAL_BUTTON1);
vLine(x + w - 1, y, h, PAL_BUTTON2);
hLine(x, y + h - 1, w - 1, PAL_BUTTON2);
// inner border
vLine(x + 2, y + 2, h - 5, PAL_BUTTON2);
hLine(x + 3, y + 2, w - 6, PAL_BUTTON2);
vLine(x + w - 3, y + 2, h - 4, PAL_BUTTON1);
hLine(x + 2, y + h - 3, w - 4, PAL_BUTTON1);
textOutShadow(177, 226, PAL_FORGRND, PAL_BUTTON2, "Number of echoes");
textOutShadow(177, 240, PAL_FORGRND, PAL_BUTTON2, "Echo distance");
textOutShadow(177, 254, PAL_FORGRND, PAL_BUTTON2, "Fade out");
textOutShadow(192, 270, PAL_FORGRND, PAL_BUTTON2, "Add memory to sample");
assert(echo_nEcho <= 1024);
charOut(315 + (0 * 7), 226, PAL_FORGRND, '0' + (char)(echo_nEcho / 1000));
charOut(315 + (1 * 7), 226, PAL_FORGRND, '0' + (echo_nEcho / 100) % 10);
charOut(315 + (2 * 7), 226, PAL_FORGRND, '0' + (echo_nEcho / 10) % 10);
charOut(315 + (3 * 7), 226, PAL_FORGRND, '0' + (echo_nEcho % 10));
assert(echo_Distance <= 0x4000);
hexOut(308, 240, PAL_FORGRND, (uint32_t)echo_Distance << 4, 5);
assert(echo_VolChange <= 100);
textOutFixed(312, 254, PAL_FORGRND, PAL_BUTTONS, dec3StrTab[echo_VolChange]);
charOutShadow(313 + (3 * 7), 254, PAL_FORGRND, PAL_BUTTON2, '%');
}
static void setupEchoBoxWidgets(void)
{
checkBox_t *c;
pushButton_t *p;
scrollBar_t *s;
// "Add memory to sample" checkbox
c = &checkBoxes[0];
memset(c, 0, sizeof (checkBox_t));
c->x = 176;
c->y = 268;
c->clickAreaWidth = 146;
c->clickAreaHeight = 12;
c->callbackFunc = cbEchoAddMemory;
c->checked = echo_AddMemory ? CHECKBOX_CHECKED : CHECKBOX_UNCHECKED;
c->visible = true;
// "Apply" pushbutton
p = &pushButtons[0];
memset(p, 0, sizeof (pushButton_t));
p->caption = "Apply";
p->x = 345;
p->y = 266;
p->w = 56;
p->h = 16;
p->callbackFuncOnUp = pbCreateEcho;
p->visible = true;
// "Exit" pushbutton
p = &pushButtons[1];
memset(p, 0, sizeof (pushButton_t));
p->caption = "Exit";
p->x = 402;
p->y = 266;
p->w = 55;
p->h = 16;
p->callbackFuncOnUp = pbExit;
p->visible = true;
// scrollbar buttons
p = &pushButtons[2];
memset(p, 0, sizeof (pushButton_t));
p->caption = ARROW_LEFT_STRING;
p->x = 345;
p->y = 224;
p->w = 23;
p->h = 13;
p->preDelay = 1;
p->delayFrames = 3;
p->callbackFuncOnDown = pbEchoNumDown;
p->visible = true;
p = &pushButtons[3];
memset(p, 0, sizeof (pushButton_t));
p->caption = ARROW_RIGHT_STRING;
p->x = 434;
p->y = 224;
p->w = 23;
p->h = 13;
p->preDelay = 1;
p->delayFrames = 3;
p->callbackFuncOnDown = pbEchoNumUp;
p->visible = true;
p = &pushButtons[4];
memset(p, 0, sizeof (pushButton_t));
p->caption = ARROW_LEFT_STRING;
p->x = 345;
p->y = 238;
p->w = 23;
p->h = 13;
p->preDelay = 1;
p->delayFrames = 3;
p->callbackFuncOnDown = pbEchoDistDown;
p->visible = true;
p = &pushButtons[5];
memset(p, 0, sizeof (pushButton_t));
p->caption = ARROW_RIGHT_STRING;
p->x = 434;
p->y = 238;
p->w = 23;
p->h = 13;
p->preDelay = 1;
p->delayFrames = 3;
p->callbackFuncOnDown = pbEchoDistUp;
p->visible = true;
p = &pushButtons[6];
memset(p, 0, sizeof (pushButton_t));
p->caption = ARROW_LEFT_STRING;
p->x = 345;
p->y = 252;
p->w = 23;
p->h = 13;
p->preDelay = 1;
p->delayFrames = 3;
p->callbackFuncOnDown = pbEchoFadeoutDown;
p->visible = true;
p = &pushButtons[7];
memset(p, 0, sizeof (pushButton_t));
p->caption = ARROW_RIGHT_STRING;
p->x = 434;
p->y = 252;
p->w = 23;
p->h = 13;
p->preDelay = 1;
p->delayFrames = 3;
p->callbackFuncOnDown = pbEchoFadeoutUp;
p->visible = true;
// echo num scrollbar
s = &scrollBars[0];
memset(s, 0, sizeof (scrollBar_t));
s->x = 368;
s->y = 224;
s->w = 66;
s->h = 13;
s->callbackFunc = sbSetEchoNumPos;
s->visible = true;
setScrollBarPageLength(0, 1);
setScrollBarEnd(0, 1024);
// echo distance scrollbar
s = &scrollBars[1];
memset(s, 0, sizeof (scrollBar_t));
s->x = 368;
s->y = 238;
s->w = 66;
s->h = 13;
s->callbackFunc = sbSetEchoDistPos;
s->visible = true;
setScrollBarPageLength(1, 1);
setScrollBarEnd(1, 16384);
// echo fadeout scrollbar
s = &scrollBars[2];
memset(s, 0, sizeof (scrollBar_t));
s->x = 368;
s->y = 252;
s->w = 66;
s->h = 13;
s->callbackFunc = sbSetEchoFadeoutPos;
s->visible = true;
setScrollBarPageLength(2, 1);
setScrollBarEnd(2, 100);
}
void handleEchoToolPanic(void)
{
stopThread = true;
}
void pbSampleEcho(void)
{
uint16_t i;
if (editor.curInstr == 0 ||
instr[editor.curInstr] == NULL ||
instr[editor.curInstr]->samp[editor.curSmp].pek == NULL)
{
return;
}
setupEchoBoxWidgets();
windowOpen();
outOfMemory = false;
exitFlag = false;
while (ui.sysReqShown)
{
readInput();
if (ui.sysReqEnterPressed)
pbCreateEcho();
setSyncedReplayerVars();
handleRedrawing();
drawEchoBox();
setScrollBarPos(0, echo_nEcho, false);
setScrollBarPos(1, echo_Distance, false);
setScrollBarPos(2, echo_VolChange, false);
drawCheckBox(0);
for (i = 0; i < 8; i++) drawPushButton(i);
for (i = 0; i < 3; i++) drawScrollBar(i);
flipFrame();
}
hideCheckBox(0);
for (i = 0; i < 8; i++) hidePushButton(i);
for (i = 0; i < 3; i++) hideScrollBar(i);
windowClose(echo_AddMemory ? false : true);
if (outOfMemory)
okBox(0, "System message", "Not enough memory!");
}
static int32_t SDLCALL mixThread(void *ptr)
{
int8_t *destPtr, *mixPtr, *p;
uint8_t mixTyp, destTyp;
int16_t destIns, destSmp, mixIns, mixSmp;
int32_t mixMul1, mixMul2, smp32, x1, x2, i, destLen, mixLen, maxLen, dest8Size, max8Size, mix8Size;
(void)ptr;
destIns = editor.curInstr;
destSmp = editor.curSmp;
mixIns = editor.srcInstr;
mixSmp = editor.srcSmp;
if (destIns == mixIns && destSmp == mixSmp)
{
setMouseBusy(false);
ui.sysReqShown = false;
return true;
}
if (instr[mixIns] == NULL)
{
mixLen = 0;
mixPtr = NULL;
mixTyp = 0;
}
else
{
mixLen = instr[mixIns]->samp[mixSmp].len;
mixPtr = instr[mixIns]->samp[mixSmp].pek;
mixTyp = instr[mixIns]->samp[mixSmp].typ;
if (mixPtr == NULL)
{
mixLen = 0;
mixTyp = 0;
}
}
if (instr[destIns] == NULL)
{
destLen = 0;
destPtr = NULL;
destTyp = 0;
}
else
{
destLen = instr[destIns]->samp[destSmp].len;
destPtr = instr[destIns]->samp[destSmp].pek;
destTyp = instr[destIns]->samp[destSmp].typ;
if (destPtr == NULL)
{
destLen = 0;
destTyp = 0;
}
}
bool src16Bits = (mixTyp >> 4) & 1;
bool dst16Bits = (destTyp >> 4) & 1;
mix8Size = src16Bits ? (mixLen >> 1) : mixLen;
dest8Size = dst16Bits ? (destLen >> 1) : destLen;
max8Size = (dest8Size > mix8Size) ? dest8Size : mix8Size;
maxLen = dst16Bits ? (max8Size << 1) : max8Size;
if (maxLen <= 0)
{
setMouseBusy(false);
ui.sysReqShown = false;
return true;
}
p = (int8_t *)calloc(maxLen + LOOP_FIX_LEN, sizeof (int8_t));
if (p == NULL)
{
outOfMemory = true;
setMouseBusy(false);
ui.sysReqShown = false;
return true;
}
if (instr[destIns] == NULL && !allocateInstr(destIns))
{
outOfMemory = true;
setMouseBusy(false);
ui.sysReqShown = false;
return true;
}
pauseAudio();
restoreSample(&instr[destIns]->samp[destSmp]);
// restore source sample
if (instr[mixIns] != NULL)
restoreSample(&instr[mixIns]->samp[mixSmp]);
// scale value for faster math and suitable rounding for PCM waveforms (DIV -> arithmetic bitshift right)
mixMul1 = (mix_Balance * 256) / 100;
mixMul2 = 256 - mixMul1;
int8_t *destPek = p + SMP_DAT_OFFSET;
for (i = 0; i < max8Size; i++)
{
int32_t index16 = i << 1;
x1 = (i >= mix8Size) ? 0 : getSampleValue(mixPtr, mixTyp, src16Bits ? index16 : i);
x2 = (i >= dest8Size) ? 0 : getSampleValue(destPtr, destTyp, dst16Bits ? index16 : i);
if (!src16Bits) x1 <<= 8;
if (!dst16Bits) x2 <<= 8;
smp32 = ((x1 * mixMul1) >> 8) + ((x2 * mixMul2) >> 8);
CLAMP16(smp32);
if (!dst16Bits)
smp32 >>= 8;
putSampleValue(destPek, destTyp, dst16Bits ? index16 : i, (int16_t)smp32);
}
if (instr[destIns]->samp[destSmp].origPek != NULL)
free(instr[destIns]->samp[destSmp].origPek);
instr[destIns]->samp[destSmp].origPek = p;
instr[destIns]->samp[destSmp].pek = instr[destIns]->samp[destSmp].origPek + SMP_DAT_OFFSET;
instr[destIns]->samp[destSmp].len = maxLen;
instr[destIns]->samp[destSmp].typ = destTyp;
if (dst16Bits)
instr[destIns]->samp[destSmp].len &= 0xFFFFFFFE;
fixSample(&instr[destIns]->samp[destSmp]);
// fix source sample
if (instr[mixIns] != NULL)
fixSample(&instr[mixIns]->samp[mixSmp]);
resumeAudio();
setSongModifiedFlag();
setMouseBusy(false);
ui.sysReqShown = false;
return true;
}
static void pbMix(void)
{
mouseAnimOn();
thread = SDL_CreateThread(mixThread, NULL, NULL);
if (thread == NULL)
{
okBox(0, "System message", "Couldn't create thread!");
return;
}
SDL_DetachThread(thread);
}
static void sbSetMixBalancePos(uint32_t pos)
{
if (mix_Balance != (int8_t)pos)
mix_Balance = (int8_t)pos;
}
static void pbMixBalanceDown(void)
{
if (mix_Balance > 0)
mix_Balance--;
}
static void pbMixBalanceUp(void)
{
if (mix_Balance < 100)
mix_Balance++;
}
static void drawMixSampleBox(void)
{
const int16_t x = 192;
const int16_t y = 240;
const int16_t w = 248;
const int16_t h = 38;
// main fill
fillRect(x + 1, y + 1, w - 2, h - 2, PAL_BUTTONS);
// outer border
vLine(x, y, h - 1, PAL_BUTTON1);
hLine(x + 1, y, w - 2, PAL_BUTTON1);
vLine(x + w - 1, y, h, PAL_BUTTON2);
hLine(x, y + h - 1, w - 1, PAL_BUTTON2);
// inner border
vLine(x + 2, y + 2, h - 5, PAL_BUTTON2);
hLine(x + 3, y + 2, w - 6, PAL_BUTTON2);
vLine(x + w - 3, y + 2, h - 4, PAL_BUTTON1);
hLine(x + 2, y + h - 3, w - 4, PAL_BUTTON1);
textOutShadow(198, 246, PAL_FORGRND, PAL_BUTTON2, "Mixing balance");
assert((mix_Balance >= 0) && (mix_Balance <= 100));
textOutFixed(299, 246, PAL_FORGRND, PAL_BUTTONS, dec3StrTab[mix_Balance]);
}
static void setupMixBoxWidgets(void)
{
pushButton_t *p;
scrollBar_t *s;
// "Apply" pushbutton
p = &pushButtons[0];
memset(p, 0, sizeof (pushButton_t));
p->caption = "Apply";
p->x = 197;
p->y = 258;
p->w = 73;
p->h = 16;
p->callbackFuncOnUp = pbMix;
p->visible = true;
// "Exit" pushbutton
p = &pushButtons[1];
memset(p, 0, sizeof (pushButton_t));
p->caption = "Exit";
p->x = 361;
p->y = 258;
p->w = 73;
p->h = 16;
p->callbackFuncOnUp = pbExit;
p->visible = true;
// scrollbar buttons
p = &pushButtons[2];
memset(p, 0, sizeof (pushButton_t));
p->caption = ARROW_LEFT_STRING;
p->x = 322;
p->y = 244;
p->w = 23;
p->h = 13;
p->preDelay = 1;
p->delayFrames = 3;
p->callbackFuncOnDown = pbMixBalanceDown;
p->visible = true;
p = &pushButtons[3];
memset(p, 0, sizeof (pushButton_t));
p->caption = ARROW_RIGHT_STRING;
p->x = 411;
p->y = 244;
p->w = 23;
p->h = 13;
p->preDelay = 1;
p->delayFrames = 3;
p->callbackFuncOnDown = pbMixBalanceUp;
p->visible = true;
// mixing balance scrollbar
s = &scrollBars[0];
memset(s, 0, sizeof (scrollBar_t));
s->x = 345;
s->y = 244;
s->w = 66;
s->h = 13;
s->callbackFunc = sbSetMixBalancePos;
s->visible = true;
setScrollBarPageLength(0, 1);
setScrollBarEnd(0, 100);
}
void pbSampleMix(void)
{
uint16_t i;
if (editor.curInstr == 0)
return;
setupMixBoxWidgets();
windowOpen();
outOfMemory = false;
exitFlag = false;
while (ui.sysReqShown)
{
readInput();
if (ui.sysReqEnterPressed)
pbMix();
setSyncedReplayerVars();
handleRedrawing();
drawMixSampleBox();
setScrollBarPos(0, mix_Balance, false);
for (i = 0; i < 4; i++) drawPushButton(i);
drawScrollBar(0);
flipFrame();
}
for (i = 0; i < 4; i++) hidePushButton(i);
hideScrollBar(0);
windowClose(false);
if (outOfMemory)
okBox(0, "System message", "Not enough memory!");
}
static void sbSetStartVolPos(uint32_t pos)
{
int16_t val = (int16_t)(pos - 500);
if (val != vol_StartVol)
{
if (ABS(val) < 10) val = 0;
else if (ABS(val - 100) < 10) val = 100;
else if (ABS(val - 200) < 10) val = 200;
else if (ABS(val - 300) < 10) val = 300;
else if (ABS(val - 400) < 10) val = 400;
else if (ABS(val + 100) < 10) val = -100;
else if (ABS(val + 200) < 10) val = -200;
else if (ABS(val + 300) < 10) val = -300;
else if (ABS(val + 400) < 10) val = -400;
vol_StartVol = val;
}
}
static void sbSetEndVolPos(uint32_t pos)
{
int16_t val = (int16_t)(pos - 500);
if (val != vol_EndVol)
{
if (ABS(val) < 10) val = 0;
else if (ABS(val - 100) < 10) val = 100;
else if (ABS(val - 200) < 10) val = 200;
else if (ABS(val - 300) < 10) val = 300;
else if (ABS(val - 400) < 10) val = 400;
else if (ABS(val + 100) < 10) val = -100;
else if (ABS(val + 200) < 10) val = -200;
else if (ABS(val + 300) < 10) val = -300;
else if (ABS(val + 400) < 10) val = -400;
vol_EndVol = val;
}
}
static void pbSampStartVolDown(void)
{
if (vol_StartVol > -500)
vol_StartVol--;
}
static void pbSampStartVolUp(void)
{
if (vol_StartVol < 500)
vol_StartVol++;
}
static void pbSampEndVolDown(void)
{
if (vol_EndVol > -500)
vol_EndVol--;
}
static void pbSampEndVolUp(void)
{
if (vol_EndVol < 500)
vol_EndVol++;
}
static int32_t SDLCALL applyVolumeThread(void *ptr)
{
#define AMP_BITS 15
int8_t *ptr8;
int16_t *ptr16;
int32_t amp32, x1, x2, len, i;
sampleTyp *s;
if (instr[editor.curInstr] == NULL)
goto applyVolumeExit;
s = &instr[editor.curInstr]->samp[editor.curSmp];
if (smpEd_Rx1 < smpEd_Rx2)
{
x1 = smpEd_Rx1;
x2 = smpEd_Rx2;
if (x2 > s->len)
x2 = s->len;
if (x1 < 0)
x1 = 0;
if (x2 <= x1)
goto applyVolumeExit;
if (s->typ & 16)
{
x1 &= 0xFFFFFFFE;
x2 &= 0xFFFFFFFE;
}
}
else
{
x1 = 0;
x2 = s->len;
}
if (s->typ & 16)
{
x1 >>= 1;
x2 >>= 1;
}
len = x2 - x1;
if (len <= 0)
goto applyVolumeExit;
const double dVol1 = vol_StartVol * ((1 << AMP_BITS) / 100.0);
const double dVol2 = vol_EndVol * ((1 << AMP_BITS) / 100.0);
/* 8bitbubsy: Rewritten to use 64-bit deltas instead, to
** prevent having to do a 64-bit mul for every output sample.
*/
const int64_t delta64 = (int64_t)round(((dVol2 - dVol1) * (UINT32_MAX+1.0)) / len);
int64_t pos64 = (int64_t)dVol1 << 32;
pauseAudio();
restoreSample(s);
if (s->typ & 16)
{
ptr16 = (int16_t *)s->pek;
for (i = x1; i < x2; i++)
{
amp32 = (int32_t)(pos64 >> 32);
pos64 += delta64;
amp32 = (ptr16[i] * amp32) >> AMP_BITS;
CLAMP16(amp32);
ptr16[i] = (int16_t)amp32;
}
}
else
{
ptr8 = s->pek;
for (i = x1; i < x2; i++)
{
amp32 = (int32_t)(pos64 >> 32);
pos64 += delta64;
amp32 = (ptr8[i] * amp32) >> AMP_BITS;
CLAMP8(amp32);
ptr8[i] = (int8_t)amp32;
}
}
fixSample(s);
resumeAudio();
setSongModifiedFlag();
applyVolumeExit:
setMouseBusy(false);
ui.sysReqShown = false;
(void)ptr;
return true;
}
static void pbApplyVolume(void)
{
if (vol_StartVol == 100 && vol_EndVol == 100)
{
ui.sysReqShown = false;
return; // no volume change to be done
}
mouseAnimOn();
thread = SDL_CreateThread(applyVolumeThread, NULL, NULL);
if (thread == NULL)
{
okBox(0, "System message", "Couldn't create thread!");
return;
}
SDL_DetachThread(thread);
}
static int32_t SDLCALL getMaxScaleThread(void *ptr)
{
int8_t *ptr8;
int16_t *ptr16;
int32_t vol, absSmp, x1, x2, len, i, maxAmp;
sampleTyp *s;
(void)ptr;
if (instr[editor.curInstr] == NULL)
goto getScaleExit;
s = &instr[editor.curInstr]->samp[editor.curSmp];
if (smpEd_Rx1 < smpEd_Rx2)
{
x1 = smpEd_Rx1;
x2 = smpEd_Rx2;
if (x2 > s->len)
x2 = s->len;
if (x1 < 0)
x1 = 0;
if (x2 <= x1)
goto getScaleExit;
if (s->typ & 16)
{
x1 &= 0xFFFFFFFE;
x2 &= 0xFFFFFFFE;
}
}
else
{
// no sample marking, operate on the whole sample
x1 = 0;
x2 = s->len;
}
len = x2 - x1;
if (s->typ & 16)
len /= 2;
if (len <= 0)
{
vol_StartVol = 0;
vol_EndVol = 0;
goto getScaleExit;
}
restoreSample(s);
maxAmp = 0;
if (s->typ & 16)
{
ptr16 = (int16_t *)&s->pek[x1];
for (i = 0; i < len; i++)
{
absSmp = ABS(ptr16[i]);
if (absSmp > maxAmp)
maxAmp = absSmp;
}
}
else
{
ptr8 = &s->pek[x1];
for (i = 0; i < len; i++)
{
absSmp = ABS(ptr8[i]);
if (absSmp > maxAmp)
maxAmp = absSmp;
}
maxAmp <<= 8;
}
fixSample(s);
if (maxAmp <= 0)
{
vol_StartVol = 0;
vol_EndVol = 0;
}
else
{
vol = (100 * 32768) / maxAmp;
if (vol > 500)
vol = 500;
vol_StartVol = (int16_t)vol;
vol_EndVol = (int16_t)vol;
}
getScaleExit:
setMouseBusy(false);
return true;
}
static void pbGetMaxScale(void)
{
mouseAnimOn();
thread = SDL_CreateThread(getMaxScaleThread, NULL, NULL);
if (thread == NULL)
{
okBox(0, "System message", "Couldn't create thread!");
return;
}
SDL_DetachThread(thread);
}
static void drawSampleVolumeBox(void)
{
char sign;
const int16_t x = 166;
const int16_t y = 230;
const int16_t w = 301;
const int16_t h = 52;
uint16_t val;
// main fill
fillRect(x + 1, y + 1, w - 2, h - 2, PAL_BUTTONS);
// outer border
vLine(x, y, h - 1, PAL_BUTTON1);
hLine(x + 1, y, w - 2, PAL_BUTTON1);
vLine(x + w - 1, y, h, PAL_BUTTON2);
hLine(x, y + h - 1, w - 1, PAL_BUTTON2);
// inner border
vLine(x + 2, y + 2, h - 5, PAL_BUTTON2);
hLine(x + 3, y + 2, w - 6, PAL_BUTTON2);
vLine(x + w - 3, y + 2, h - 4, PAL_BUTTON1);
hLine(x + 2, y + h - 3, w - 4, PAL_BUTTON1);
textOutShadow(172, 236, PAL_FORGRND, PAL_BUTTON2, "Start volume");
textOutShadow(172, 250, PAL_FORGRND, PAL_BUTTON2, "End volume");
charOutShadow(282, 236, PAL_FORGRND, PAL_BUTTON2, '%');
charOutShadow(282, 250, PAL_FORGRND, PAL_BUTTON2, '%');
if (vol_StartVol == 0) sign = ' ';
else if (vol_StartVol < 0) sign = '-';
else sign = '+';
val = ABS(vol_StartVol);
if (val > 99)
{
charOut(253, 236, PAL_FORGRND, sign);
charOut(260, 236, PAL_FORGRND, '0' + (char)(val / 100));
charOut(267, 236, PAL_FORGRND, '0' + ((val / 10) % 10));
charOut(274, 236, PAL_FORGRND, '0' + (val % 10));
}
else if (val > 9)
{
charOut(260, 236, PAL_FORGRND, sign);
charOut(267, 236, PAL_FORGRND, '0' + (char)(val / 10));
charOut(274, 236, PAL_FORGRND, '0' + (val % 10));
}
else
{
charOut(267, 236, PAL_FORGRND, sign);
charOut(274, 236, PAL_FORGRND, '0' + (char)val);
}
if (vol_EndVol == 0) sign = ' ';
else if (vol_EndVol < 0) sign = '-';
else sign = '+';
val = ABS(vol_EndVol);
if (val > 99)
{
charOut(253, 250, PAL_FORGRND, sign);
charOut(260, 250, PAL_FORGRND, '0' + (char)(val / 100));
charOut(267, 250, PAL_FORGRND, '0' + ((val / 10) % 10));
charOut(274, 250, PAL_FORGRND, '0' + (val % 10));
}
else if (val > 9)
{
charOut(260, 250, PAL_FORGRND, sign);
charOut(267, 250, PAL_FORGRND, '0' + (char)(val / 10));
charOut(274, 250, PAL_FORGRND, '0' + (val % 10));
}
else
{
charOut(267, 250, PAL_FORGRND, sign);
charOut(274, 250, PAL_FORGRND, '0' + (char)val);
}
}
static void setupVolumeBoxWidgets(void)
{
pushButton_t *p;
scrollBar_t *s;
// "Apply" pushbutton
p = &pushButtons[0];
memset(p, 0, sizeof (pushButton_t));
p->caption = "Apply";
p->x = 171;
p->y = 262;
p->w = 73;
p->h = 16;
p->callbackFuncOnUp = pbApplyVolume;
p->visible = true;
// "Get maximum scale" pushbutton
p = &pushButtons[1];
memset(p, 0, sizeof (pushButton_t));
p->caption = "Get maximum scale";
p->x = 245;
p->y = 262;
p->w = 143;
p->h = 16;
p->callbackFuncOnUp = pbGetMaxScale;
p->visible = true;
// "Exit" pushbutton
p = &pushButtons[2];
memset(p, 0, sizeof (pushButton_t));
p->caption = "Exit";
p->x = 389;
p->y = 262;
p->w = 73;
p->h = 16;
p->callbackFuncOnUp = pbExit;
p->visible = true;
// scrollbar buttons
p = &pushButtons[3];
memset(p, 0, sizeof (pushButton_t));
p->caption = ARROW_LEFT_STRING;
p->x = 292;
p->y = 234;
p->w = 23;
p->h = 13;
p->preDelay = 1;
p->delayFrames = 3;
p->callbackFuncOnDown = pbSampStartVolDown;
p->visible = true;
p = &pushButtons[4];
memset(p, 0, sizeof (pushButton_t));
p->caption = ARROW_RIGHT_STRING;
p->x = 439;
p->y = 234;
p->w = 23;
p->h = 13;
p->preDelay = 1;
p->delayFrames = 3;
p->callbackFuncOnDown = pbSampStartVolUp;
p->visible = true;
p = &pushButtons[5];
memset(p, 0, sizeof (pushButton_t));
p->caption = ARROW_LEFT_STRING;
p->x = 292;
p->y = 248;
p->w = 23;
p->h = 13;
p->preDelay = 1;
p->delayFrames = 3;
p->callbackFuncOnDown = pbSampEndVolDown;
p->visible = true;
p = &pushButtons[6];
memset(p, 0, sizeof (pushButton_t));
p->caption = ARROW_RIGHT_STRING;
p->x = 439;
p->y = 248;
p->w = 23;
p->h = 13;
p->preDelay = 1;
p->delayFrames = 3;
p->callbackFuncOnDown = pbSampEndVolUp;
p->visible = true;
// volume start scrollbar
s = &scrollBars[0];
memset(s, 0, sizeof (scrollBar_t));
s->x = 315;
s->y = 234;
s->w = 124;
s->h = 13;
s->callbackFunc = sbSetStartVolPos;
s->visible = true;
setScrollBarPageLength(0, 1);
setScrollBarEnd(0, 500 * 2);
setScrollBarPos(0, 500, false);
// volume end scrollbar
s = &scrollBars[1];
memset(s, 0, sizeof (scrollBar_t));
s->x = 315;
s->y = 248;
s->w = 124;
s->h = 13;
s->callbackFunc = sbSetEndVolPos;
s->visible = true;
setScrollBarPageLength(1, 1);
setScrollBarEnd(1, 500 * 2);
setScrollBarPos(1, 500, false);
}
void pbSampleVolume(void)
{
uint16_t i;
if (editor.curInstr == 0 ||
instr[editor.curInstr] == NULL ||
instr[editor.curInstr]->samp[editor.curSmp].pek == NULL)
{
return;
}
setupVolumeBoxWidgets();
windowOpen();
exitFlag = false;
while (ui.sysReqShown)
{
readInput();
if (ui.sysReqEnterPressed)
{
pbApplyVolume();
keyb.ignoreCurrKeyUp = true; // don't handle key up event for this key release
}
setSyncedReplayerVars();
handleRedrawing();
// this is needed for the "Get maximum scale" button
if (ui.setMouseIdle) mouseAnimOff();
drawSampleVolumeBox();
setScrollBarPos(0, 500 + vol_StartVol, false);
setScrollBarPos(1, 500 + vol_EndVol, false);
for (i = 0; i < 7; i++) drawPushButton(i);
for (i = 0; i < 2; i++) drawScrollBar(i);
flipFrame();
}
for (i = 0; i < 7; i++) hidePushButton(i);
for (i = 0; i < 2; i++) hideScrollBar(i);
windowClose(true);
}