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realtime oscilloscope

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This commit is contained in:
y4my4my4m 2023-09-05 00:57:49 +09:00
parent a2444fc172
commit 59d8ba00d8
2 changed files with 154 additions and 46 deletions
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15
src/Home/Tracker/MusicTracker.ZC
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@ -51,11 +51,14 @@ U0 AudioPlayNote(U8 note, U8 velocity, U8 instrument) {
//ApplyEnvelope(buffer, SAMPLE_RATE); // TODO: Apply fade in and fade out //ApplyEnvelope(buffer, SAMPLE_RATE); // TODO: Apply fade in and fade out
// I64 i; //I64 i;
// for (i = 0; i < bufferSize; i++) { //for (i = 0; i < bufferSize; i++) {
// // Copy data to the shared oscilloscope buffer // Copy data to the shared oscilloscope buffer
// gSharedBuffer[i] = buffer[i]; //gSharedBuffer[i] = buffer[i];
// } //}
UpdateSharedBuffer(buffer, SAMPLE_RATE/winmgr.fps);
// Play the buffer using the AC97 driver: // Play the buffer using the AC97 driver:
AudioSFXPlay(buffer, bufferSize); AudioSFXPlay(buffer, bufferSize);
@ -105,7 +108,7 @@ U0 EnterPattern(Pattern *pattern) {
if (cell->note) { if (cell->note) {
cell->velocity = I64Get("Enter velocity for note (1-127): "); cell->velocity = I64Get("Enter velocity for note (1-127): ");
if (cell->velocity) { if (cell->velocity) {
 Print("Enter instrument for note (1-5): "); Print("Enter instrument for note (1-5): ");
switch (KeyGet(&sc)) { switch (KeyGet(&sc)) {
case '1': case '1':
cell->instrument = PULSE1; cell->instrument = PULSE1;

185
src/Home/Tracker/Oscilloscope.ZC
View file

@ -1,73 +1,178 @@
// #define CHUNK_SIZE 1470 // (44100 / 30) // 30 FPS
// winmgr.fps
// Globals // Globals
U32 *gSharedBuffer; U32 *gSharedBuffer;
I64 gSharedBufferPosition = 0; I64 gSharedBufferPosition = 0;
I64 gSharedBufferSize; I64 gSharedBufferSize;
// Initialize shared buffer // Initialize shared buffer
U0 InitSharedBuffer(I64 size) { U0 InitSharedBuffer(I64 size)
{
gSharedBuffer = MAlloc(size * sizeof(U32)); gSharedBuffer = MAlloc(size * sizeof(U32));
gSharedBufferSize = size; gSharedBufferSize = size;
gSharedBufferPosition = 0; gSharedBufferPosition = 0;
} }
// Update shared buffer in your audio playback function // Update shared buffer in your audio playback function
U0 UpdateSharedBuffer(U32 *buffer, I64 size) { U0 UpdateSharedBuffer(U32 *buffer, I64 size)
I64 i; {
for (i = 0; i < size; i++) { I64 i;
for (i = 0; i < size; i++)
{
gSharedBuffer[gSharedBufferPosition] = buffer[i]; gSharedBuffer[gSharedBufferPosition] = buffer[i];
gSharedBufferPosition = (gSharedBufferPosition + 1) % gSharedBufferSize; gSharedBufferPosition = (gSharedBufferPosition + 1) % gSharedBufferSize;
} }
}
U0 OscilloscopeDraw() {
I64 i, y;
//GrClear(0); // Clear the screen
I64 startPosition = gSharedBufferPosition; // I64 i;
for (i = 0; i < 400; i++) { // for (i = 0; i < size; i++) {
I16 sample_value = (gSharedBuffer[startPosition] & 0xFFFF) - 32768; // extract left channel and center around 0 // gSharedBuffer[gSharedBufferPosition] = buffer[i];
// gSharedBufferPosition = (gSharedBufferPosition + 1) % gSharedBufferSize;
// }
}
U0 OscilloscopeDraw(CTask *task, CDC *dc)
{
I64 i, y;
I64 CHUNK_SIZE = SAMPLE_RATE / winmgr.fps;
// Start from the most recent sample and display CHUNK_SIZE samples
I64 startPosition = (gSharedBufferPosition - CHUNK_SIZE + gSharedBufferSize) % gSharedBufferSize;
for (i = 0; i < CHUNK_SIZE; i++)
{
I16 sample_value = (gSharedBuffer[startPosition] & 0xFFFF) - 32768;
F64 normalized_sample = ToF64(sample_value) / 32768.0; F64 normalized_sample = ToF64(sample_value) / 32768.0;
y = 300 / 2 - (normalized_sample * 300 / 2); y = 300 / 2 - (normalized_sample * 300 / 2);
GrPlot(i, y, WHITE); // Using GrPlot instead of DrawPoint GrPlot(dc, i, y);
startPosition = (startPosition + 1) % gSharedBufferSize; startPosition = (startPosition + 1) % gSharedBufferSize;
} }
// I64 i, y;
// //DCClear(dc);
// I64 startPosition = gSharedBufferPosition;
// for (i = 0; i < 400; i++) {
// I16 sample_value = (gSharedBuffer[startPosition] & 0xFFFF) - 32768; // extract left channel and center around 0
// F64 normalized_sample = ToF64(sample_value) / 32768.0;
// y = 300 / 2 - (normalized_sample * 300 / 2);
// GrPlot(dc, i, y); // Using GrPlot instead of DrawPoint
// startPosition = (startPosition + 1) % gSharedBufferSize;
// }
} }
// Oscilloscope task U0 StartOscilloscope()
U0 OscilloscopeTask() { {
// Fs->draw_it = &OscilloscopeDraw; // Set the draw callback I64 ch, sc;
while (TRUE)
{
Refresh;
}
}
U0 StartOscilloscope() {
InitSharedBuffer(44100); // For example, buffer to store 1 second of audio at 44100Hz InitSharedBuffer(44100); // For example, buffer to store 1 second of audio at 44100Hz
U8 *name = "Oscilloscope";
CTask *task = Spawn(&ServerCmdLine, NULL, name,, Fs);
StrCopy(task->task_title, name);
task->title_src = TTS_LOCKED_CONST;
task->border_src = BDS_CONST;
task->border_attr = LTGREEN << 4 + WHITE;
TaskExe(task, Fs, ";", 1 << JOBf_WAKE_MASTER | 1 << JOBf_FREE_ON_COMPLETE);
WinHorz((TEXT_COLS / 2) - 32, (TEXT_COLS / 2) + 32, task);
WinVert((TEXT_ROWS / 2) - 16, (TEXT_ROWS / 2) + 16, task);
task->win_inhibit = WIG_NO_FOCUS_TASK_DEFAULT;
// WinHorz(task->win_left, task->win_left + 50, task);
// WinVert(2, 2 + 8, task);
// task->animate_task = Spawn(&OscilloscopeAnimate, NULL, "Animate",, task);
task->draw_it = &OscilloscopeDraw; // Set the draw callback
// DocPut(task)->max_entries = 100;
// CCtrl *oscWindow = OscWindow;
// windowed
// oscWindow->win_task->win_left = (GR_WIDTH / 23);
// oscWindow->win_task->win_right = (GR_WIDTH / 13);
// oscWindow->win_task->win_top = GR_HEIGHT / 80;
// oscWindow->win_task->win_bottom = GR_HEIGHT / 10;
// SettingsPush(); // Push current settings // SettingsPush(); // Push current settings
// Fs->win_width = 400; // Width of the oscilloscope window //Fs->win_width = 400; // Width of the oscilloscope window
// Fs->win_height = 300; // Height of the oscilloscope window //Fs->win_height = 300; // Height of the oscilloscope window
WinHorz((TEXT_COLS / 2) - 200,
(TEXT_COLS / 2) - 200 + (200 - 1),
Fs);
WinVert((TEXT_ROWS / 2) - 150,
(TEXT_ROWS / 2) - 150 + (Fs->win_height - 1),
Fs);
// Fs->border_src = BDS_CONST;
// Fs->border_attr = LTGREEN << 4 + WHITE;
// StrCopy(Fs->task_title, "Oscilloscope");
Fs->draw_it = &OscilloscopeDraw; // Set the draw callback // WinHorz((TEXT_COLS / 2) - 32, (TEXT_COLS / 2) + 32, Fs);
// WinVert((TEXT_ROWS / 2) - 16, (TEXT_ROWS / 2) + 16, Fs);
while (TRUE) // oscWindow->win_task->border_src = BDS_CONST;
{ // oscWindow->win_task->border_attr = LTGREEN << 4 + WHITE;
Refresh; // StrCopy(oscWindow->win_task->task_title, "Oscilloscope");
}
// Spawn("Oscilloscope", OscilloscopeTask); // Start the oscilloscope task
//Spawn("Oscilloscope", OscilloscopeTask); // Start the oscilloscope task
// Fs->draw_it = &OscilloscopeDraw; // Set the draw callback
//try
//{
// do
// switch (ch = KeyGet(&sc))
// {
// case '\n':
// "dood\n";
// break;
// }
// while (ch != CH_ESC && ch != CH_SHIFT_ESC);
//}
//catch
// PutExcept;
// OscWindowDel(c);
// SettingsPop(); // Pop settings // SettingsPop(); // Pop settings
} }
// U0 OscilloscopeAnimate()
// {
// while (TRUE)
// {
// UpdateSharedBuffer(gSharedBuffer[gSharedBufferPosition], gSharedBufferSize);
// Sleep(200);
// Refresh;
// }
// }
// class @Oscilloscope
// {
// U8 buffer;
// CBGR24 color;
// I64 width;
// I64 height;
// } osc;
// CCtrl *OscWindow()
// {
// CCtrl *c = CAlloc(sizeof(CCtrl));
// c->win_task = Fs;
// c->flags = CTRLF_SHOW | CTRLF_CAPTURE_LEFT_MS;
// c->type = CTRLT_GENERIC;
// c->state = &osc;
// MemSet(&osc,0,sizeof(@Oscilloscope));
// c->draw_it = &OscilloscopeDraw;
// // c->left_click = &LeftClickSlider;
// // c->update_derived_vals = &UpdateDerivedCtrlSlider;
// QueueInsert(c, Fs->last_ctrl);
// TaskDerivedValsUpdate;
// return c;
// }
// U0 OscWindowDel(CCtrl *c)
// {
// QueueRemove(c);
// Free(c);
// }
//StartOscilloscope;