ref: e5d197d470859f5f951fcbae17da7d6e99a53163
dir: /src/ft2_wav_renderer.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>
#include "ft2_header.h"
#include "ft2_gui.h"
#include "ft2_pattern_ed.h"
#include "ft2_diskop.h"
#include "ft2_scopes.h"
#include "ft2_config.h"
#include "ft2_mouse.h"
#include "ft2_sample_ed.h"
#include "ft2_inst_ed.h"
#include "ft2_audio.h"
#include "ft2_wav_renderer.h"
#include "ft2_structs.h"
#define TICKS_PER_RENDER_CHUNK 64
enum
{
WAV_FORMAT_PCM = 0x0001,
WAV_FORMAT_IEEE_FLOAT = 0x0003
};
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;
static char WAV_SysReqText[192];
static uint8_t WDBitDepth = 16, WDStartPos, WDStopPos, *wavRenderBuffer;
static int16_t WDAmp;
static uint32_t WDFrequency = 48000;
static SDL_Thread *thread;
static void updateWavRenderer(void)
{
char str[10];
fillRect(209, 116, 41, 51, PAL_DESKTOP);
sprintf(str, "%6d", WDFrequency);
textOutFixed(209, 116, PAL_FORGRND, PAL_DESKTOP, str);
sprintf(str, "%02d", WDAmp);
textOut(237, 130, PAL_FORGRND, str);
hexOut(237, 144, PAL_FORGRND, WDStartPos, 2);
hexOut(237, 158, PAL_FORGRND, WDStopPos, 2);
}
void setWavRenderFrequency(int32_t freq)
{
WDFrequency = CLAMP(freq, MIN_WAV_RENDER_FREQ, MAX_WAV_RENDER_FREQ);
if (ui.wavRendererShown)
updateWavRenderer();
}
void setWavRenderBitDepth(uint8_t bitDepth)
{
if (bitDepth == 16)
WDBitDepth = 16;
else if (bitDepth == 32)
WDBitDepth = 32;
if (ui.wavRendererShown)
updateWavRenderer();
}
void updateWavRendererSettings(void) // called when changing config.boostLevel
{
WDAmp = config.boostLevel;
}
void drawWavRenderer(void)
{
drawFramework(0, 92, 291, 17, FRAMEWORK_TYPE1);
drawFramework(0, 109, 79, 64, FRAMEWORK_TYPE1);
drawFramework(79, 109, 212, 64, FRAMEWORK_TYPE1);
textOutShadow(4, 96, PAL_FORGRND, PAL_DSKTOP2, "WAV exporting:");
textOutShadow(156, 96, PAL_FORGRND, PAL_DSKTOP2, "16-bit");
textOutShadow(221, 96, PAL_FORGRND, PAL_DSKTOP2, "32-bit float");
textOutShadow(85, 116, PAL_FORGRND, PAL_DSKTOP2, "Frequency");
textOutShadow(85, 130, PAL_FORGRND, PAL_DSKTOP2, "Amplification");
textOutShadow(85, 144, PAL_FORGRND, PAL_DSKTOP2, "Start song position");
textOutShadow(85, 158, PAL_FORGRND, PAL_DSKTOP2, "Stop song position");
showPushButton(PB_WAV_RENDER);
showPushButton(PB_WAV_EXIT);
showPushButton(PB_WAV_FREQ_UP);
showPushButton(PB_WAV_FREQ_DOWN);
showPushButton(PB_WAV_AMP_UP);
showPushButton(PB_WAV_AMP_DOWN);
showPushButton(PB_WAV_START_UP);
showPushButton(PB_WAV_START_DOWN);
showPushButton(PB_WAV_END_UP);
showPushButton(PB_WAV_END_DOWN);
// bitdepth radiobuttons
radioButtons[RB_WAV_RENDER_BITDEPTH16].state = RADIOBUTTON_UNCHECKED;
radioButtons[RB_WAV_RENDER_BITDEPTH32].state = RADIOBUTTON_UNCHECKED;
if (WDBitDepth == 16)
radioButtons[RB_WAV_RENDER_BITDEPTH16].state = RADIOBUTTON_CHECKED;
else
radioButtons[RB_WAV_RENDER_BITDEPTH32].state = RADIOBUTTON_CHECKED;
showRadioButtonGroup(RB_GROUP_WAV_RENDER_BITDEPTH);
updateWavRenderer();
}
void resetWavRenderer(void)
{
WDStartPos = 0;
WDStopPos = (uint8_t)song.len - 1;
if (ui.wavRendererShown)
updateWavRenderer();
}
void showWavRenderer(void)
{
if (ui.extended)
exitPatternEditorExtended();
hideTopScreen();
showTopScreen(false);
ui.wavRendererShown = true;
ui.scopesShown = false;
WDStartPos = 0;
WDStopPos = (uint8_t)song.len - 1;
drawWavRenderer();
}
void hideWavRenderer(void)
{
ui.wavRendererShown = false;
hidePushButton(PB_WAV_RENDER);
hidePushButton(PB_WAV_EXIT);
hidePushButton(PB_WAV_FREQ_UP);
hidePushButton(PB_WAV_FREQ_DOWN);
hidePushButton(PB_WAV_AMP_UP);
hidePushButton(PB_WAV_AMP_DOWN);
hidePushButton(PB_WAV_START_UP);
hidePushButton(PB_WAV_START_DOWN);
hidePushButton(PB_WAV_END_UP);
hidePushButton(PB_WAV_END_DOWN);
hideRadioButtonGroup(RB_GROUP_WAV_RENDER_BITDEPTH);
ui.scopesShown = true;
drawScopeFramework();
}
void exitWavRenderer(void)
{
hideWavRenderer();
}
static bool dump_Init(uint32_t frq, int16_t amp, int16_t songPos)
{
uint32_t maxSamplesPerTick, sampleSize;
maxSamplesPerTick = (int32_t)ceil((frq * 2.5) / MIN_BPM); // absolute max samples per tick
sampleSize = (WDBitDepth / 8) * 2; // 2 channels
// *2 for stereo
wavRenderBuffer = (uint8_t *)malloc((TICKS_PER_RENDER_CHUNK * maxSamplesPerTick) * sampleSize);
if (wavRenderBuffer == NULL)
return false;
editor.wavIsRendering = true;
setPos(songPos, 0, true);
playMode = PLAYMODE_SONG;
songPlaying = true;
resetChannels();
setNewAudioFreq(frq);
setAudioAmp(amp, config.masterVol, (WDBitDepth == 32));
stopVoices();
song.globVol = 64;
setSpeed(song.speed);
resetPlaybackTime();
return true;
}
static void dump_Close(FILE *f, uint32_t totalSamples)
{
uint32_t tmpLen, totalBytes;
wavHeader_t wavHeader;
if (wavRenderBuffer != NULL)
{
free(wavRenderBuffer);
wavRenderBuffer = NULL;
}
if (WDBitDepth == 16)
totalBytes = totalSamples * sizeof (int16_t);
else
totalBytes = totalSamples * sizeof (float);
if (totalBytes & 1)
fputc(0, f); // write pad byte
tmpLen = ftell(f) - 8;
// go back and fill in WAV header
rewind(f);
wavHeader.chunkID = 0x46464952; // "RIFF"
wavHeader.chunkSize = tmpLen;
wavHeader.format = 0x45564157; // "WAVE"
wavHeader.subchunk1ID = 0x20746D66; // "fmt "
wavHeader.subchunk1Size = 16;
if (WDBitDepth == 16)
wavHeader.audioFormat = WAV_FORMAT_PCM;
else
wavHeader.audioFormat = WAV_FORMAT_IEEE_FLOAT;
wavHeader.numChannels = 2;
wavHeader.sampleRate = WDFrequency;
wavHeader.byteRate = (wavHeader.sampleRate * wavHeader.numChannels * WDBitDepth) / 8;
wavHeader.blockAlign = (wavHeader.numChannels * WDBitDepth) / 8;
wavHeader.bitsPerSample = WDBitDepth;
wavHeader.subchunk2ID = 0x61746164; // "data"
wavHeader.subchunk2Size = totalBytes;
// write main header
fwrite(&wavHeader, 1, sizeof (wavHeader_t), f);
fclose(f);
stopPlaying();
// kludge: set speed to 6 if speed was set to 0
if (song.tempo == 0)
song.tempo = 6;
setBackOldAudioFreq();
setSpeed(song.speed);
setAudioAmp(config.boostLevel, config.masterVol, config.specialFlags & BITDEPTH_32);
editor.wavIsRendering = false;
setMouseBusy(false);
}
static bool dump_EndOfTune(int16_t endSongPos) // exactly the same as in real FT2
{
bool returnValue = (editor.wavReachedEndFlag && song.pattPos == 0 && song.timer == 1) || (song.tempo == 0);
if (song.songPos == endSongPos && song.pattPos == 0 && song.timer == 1)
editor.wavReachedEndFlag = true;
return returnValue;
}
void dump_RenderTick(uint32_t samplesPerTick, uint8_t *buffer)
{
replayerBusy = true;
if (audio.volumeRampingFlag)
resetRampVolumes();
tickReplayer();
updateVoices();
replayerBusy = false;
mixReplayerTickToBuffer(samplesPerTick, buffer, WDBitDepth);
}
static void updateVisuals(void)
{
editor.editPattern = (uint8_t)song.pattNr;
editor.pattPos = song.pattPos;
editor.songPos = song.songPos;
editor.speed = song.speed;
editor.tempo = song.tempo;
editor.globalVol = song.globVol;
ui.drawPosEdFlag = true;
ui.drawPattNumLenFlag = true;
ui.drawReplayerPianoFlag = true;
ui.drawBPMFlag = true;
ui.drawSpeedFlag = true;
ui.drawGlobVolFlag = true;
ui.updatePatternEditor = true;
drawPlaybackTime();
}
static int32_t SDLCALL renderWavThread(void *ptr)
{
bool renderDone;
uint8_t *ptr8, loopCounter;
uint32_t samplesInChunk, sampleCounter;
FILE *f;
(void)ptr;
f = (FILE *)editor.wavRendererFileHandle;
fseek(f, sizeof (wavHeader_t), SEEK_SET);
pauseAudio();
if (!dump_Init(WDFrequency, WDAmp, WDStartPos))
{
resumeAudio();
okBoxThreadSafe(0, "System message", "Not enough memory!");
return true;
}
sampleCounter = 0;
renderDone = false;
loopCounter = 8;
double dTickSamples = audio.dSamplesPerTick;
editor.wavReachedEndFlag = false;
while (!renderDone)
{
samplesInChunk = 0;
// render several ticks at once to prevent frequent disk I/O (speeds up the process)
ptr8 = wavRenderBuffer;
for (uint32_t i = 0; i < TICKS_PER_RENDER_CHUNK; i++)
{
if (!editor.wavIsRendering || dump_EndOfTune(WDStopPos))
{
renderDone = true;
break;
}
int32_t tickSamples = (int32_t)dTickSamples;
dump_RenderTick(tickSamples, ptr8);
dTickSamples -= tickSamples; // keep fractional part
dTickSamples += audio.dSamplesPerTick;
tickSamples *= 2; // stereo
samplesInChunk += tickSamples;
sampleCounter += tickSamples;
// increase buffer pointer
if (WDBitDepth == 16)
ptr8 += tickSamples * sizeof (int16_t);
else
ptr8 += tickSamples * sizeof (float);
if (++loopCounter >= 8)
{
loopCounter = 0;
updateVisuals();
}
}
// write buffer to disk
if (samplesInChunk > 0)
{
if (WDBitDepth == 16)
fwrite(wavRenderBuffer, sizeof (int16_t), samplesInChunk, f);
else
fwrite(wavRenderBuffer, sizeof (float), samplesInChunk, f);
}
}
updateVisuals();
dump_Close(f, sampleCounter);
resumeAudio();
editor.diskOpReadOnOpen = true;
return true;
}
static void createOverwriteText(char *name)
{
char nameTmp[128];
uint32_t nameLen;
// read entry name to a small buffer
nameLen = (uint32_t)strlen(name);
memcpy(nameTmp, name, (nameLen >= sizeof (nameTmp)) ? sizeof (nameTmp) : (nameLen + 1));
nameTmp[sizeof (nameTmp) - 1] = '\0';
trimEntryName(nameTmp, false);
sprintf(WAV_SysReqText, "Overwrite file \"%s\"?", nameTmp);
}
static void wavRender(bool checkOverwrite)
{
char *filename;
WDStartPos = (uint8_t)(MAX(0, MIN(WDStartPos, song.len - 1)));
WDStopPos = (uint8_t)(MAX(0, MIN(MAX(WDStartPos, WDStopPos), song.len - 1)));
updateWavRenderer();
diskOpChangeFilenameExt(".wav");
filename = getDiskOpFilename();
if (checkOverwrite && fileExistsAnsi(filename))
{
createOverwriteText(filename);
if (okBox(2, "System request", WAV_SysReqText) != 1)
return;
}
editor.wavRendererFileHandle = fopen(filename, "wb");
if (editor.wavRendererFileHandle == NULL)
{
okBox(0, "System message", "General I/O error while writing to WAV (is the file in use)?");
return;
}
mouseAnimOn();
thread = SDL_CreateThread(renderWavThread, NULL, NULL);
if (thread == NULL)
{
fclose((FILE *)editor.wavRendererFileHandle);
okBox(0, "System message", "Couldn't create thread!");
return;
}
SDL_DetachThread(thread);
}
void pbWavRender(void)
{
wavRender(config.cfg_OverwriteWarning ? true : false);
}
void pbWavExit(void)
{
exitWavRenderer();
}
void pbWavFreqUp(void)
{
if (WDFrequency < MAX_WAV_RENDER_FREQ)
{
if (WDFrequency == 44100) WDFrequency = 48000;
else if (WDFrequency == 48000) WDFrequency = 96000;
else if (WDFrequency == 96000) WDFrequency = 192000;
updateWavRenderer();
}
}
void pbWavFreqDown(void)
{
if (WDFrequency > MIN_WAV_RENDER_FREQ)
{
if (WDFrequency == 192000) WDFrequency = 96000;
else if (WDFrequency == 96000) WDFrequency = 48000;
else if (WDFrequency == 48000) WDFrequency = 44100;
updateWavRenderer();
}
}
void pbWavAmpUp(void)
{
if (WDAmp >= 32)
return;
WDAmp++;
updateWavRenderer();
}
void pbWavAmpDown(void)
{
if (WDAmp <= 1)
return;
WDAmp--;
updateWavRenderer();
}
void pbWavSongStartUp(void)
{
if (WDStartPos >= song.len-1)
return;
WDStartPos++;
WDStopPos = (uint8_t)(MIN(MAX(WDStartPos, WDStopPos), song.len - 1));
updateWavRenderer();
}
void pbWavSongStartDown(void)
{
if (WDStartPos == 0)
return;
WDStartPos--;
updateWavRenderer();
}
void pbWavSongEndUp(void)
{
if (WDStopPos >= 255)
return;
WDStopPos++;
WDStopPos = (uint8_t)(MIN(MAX(WDStartPos, WDStopPos), song.len - 1));
updateWavRenderer();
}
void pbWavSongEndDown(void)
{
if (WDStopPos == 0)
return;
WDStopPos--;
WDStopPos = (uint8_t)(MIN(MAX(WDStartPos, WDStopPos), song.len - 1));
updateWavRenderer();
}
void rbWavRenderBitDepth16(void)
{
checkRadioButton(RB_WAV_RENDER_BITDEPTH16);
WDBitDepth = 16;
}
void rbWavRenderBitDepth32(void)
{
checkRadioButton(RB_WAV_RENDER_BITDEPTH32);
WDBitDepth = 32;
}