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oscilloscope
This commit is contained in:
y4my4my4m
parent
53ed2bbc2e
commit
c92f7db428
5 changed files with 112 additions and 22 deletions
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@ -21,12 +21,15 @@ U16 currentRate = InU16(ac97.nam + EXT_FRONT_RATE);
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"currentRate: %d\n", currentRate;
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#include "Classes"
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#include "Utils"
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// include_noreindex "MIDIHandling"
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// include_noreindex "WaveformGen"
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// include_noreindex "UITracker"
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#include "Oscilloscope"
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#include "MusicTracker"
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AutoComplete(0);
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MusicTracker;
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MusicTracker;
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StartOscilloscope;
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@ -42,7 +42,7 @@ U0 AudioPlayNote(U8 note, U8 velocity, U8 instrument) {
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break;
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case SAMPLE:
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PlaySample(buffer, bufferSize, note, velocity);
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Print("Buffer first values: %d, %d, %d, %d...\n", buffer[0], buffer[1], buffer[2], buffer[3]);
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//Print("Buffer first values: %d, %d, %d, %d...\n", buffer[0], buffer[1], buffer[2], buffer[3]);
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break;
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default:
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GenerateSineWave(buffer, bufferSize, freq, velocity);
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@ -51,35 +51,49 @@ U0 AudioPlayNote(U8 note, U8 velocity, U8 instrument) {
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//ApplyEnvelope(buffer, SAMPLE_RATE); // TODO: Apply fade in and fade out
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// I64 i;
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// for (i = 0; i < bufferSize; i++) {
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// // Copy data to the shared oscilloscope buffer
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// gSharedBuffer[i] = buffer[i];
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// }
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// Play the buffer using the AC97 driver:
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AudioSFXPlay(buffer, bufferSize);
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// silly debug print
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if (instrument == SAMPLE)
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"Instrument: $$RED$$ SAMPLE $$DKGRAY$$|$$FG$$ Note: $$YELLOW$$%d$$FG$$\n", note;
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if (instrument == PULSE1)
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"Instrument: $$GREEN$$ PULSE1 $$DKGRAY$$|$$FG$$ Note: $$YELLOW$$%d$$FG$$\n", note;
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"³ $$GREEN$$PULSE1 $$FG$$³ $$YELLOW$$%d$$FG$$\t³", note;
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if (instrument == PULSE2)
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"Instrument: $$CYAN$$ PULSE2 $$DKGRAY$$|$$FG$$ Note: $$YELLOW$$%d$$FG$$\n", note;
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"³ $$CYAN$$PULSE2 $$FG$$³ $$YELLOW$$%d$$FG$$\t³", note;
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if (instrument == TRIANGLE)
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"Instrument: $$YELLOW$$ TRIANGLE $$DKGRAY$$|$$FG$$ Note: $$YELLOW$$%d$$FG$$\n", note;
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"³ $$YELLOW$$TRIANGLE $$FG$$³ $$YELLOW$$%d$$FG$$\t³", note;
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if (instrument == NOISE)
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"Instrument: $$BROWN$$ NOISE $$DKGRAY$$|$$FG$$ Note: $$YELLOW$$%d$$FG$$\n", note;
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"³ $$BROWN$$NOISE $$FG$$³ $$YELLOW$$%d$$FG$$\t³", note;
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if (instrument == SAMPLE)
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"³ $$RED$$SAMPLE $$FG$$³ $$YELLOW$$%d$$FG$$\t³", note;
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if (instrument == INSTRUMENT_NONE)
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"³ ³ \t³", note;
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"\n";
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Free(buffer);
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}
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U0 PlayPattern(Pattern *pattern) {
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I64 row;
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NoteCell *cell;
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"ÚÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄ¿\n";
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"³ INSTRUMENT ³ NOTE ³\n";
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"ÃÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄ´\n";
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for (row = 0; row < TRACK_LENGTH; row++) {
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cell = &pattern->cells[row];
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if (cell->note) {
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AudioPlayNote(cell->note, cell->velocity, cell->instrument);
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if (row < TRACK_LENGTH-1) "ÃÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄ´\n";
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}
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if (cell->instrument == SAMPLE) Sleep(1000); // wait for 6sec for the 7sec sample test
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//Sleep(1200); // Adjust for tempo
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Sleep(300);
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}
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"ÀÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÙ\n";
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}
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U0 EnterPattern(Pattern *pattern) {
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@ -87,7 +101,7 @@ U0 EnterPattern(Pattern *pattern) {
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NoteCell *cell;
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for (row = 0; row < TRACK_LENGTH; row++) {
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cell = &pattern->cells[row];
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Print("Enter note for row %d (0-127, 0 for none): ", row);
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Print("Enter note for row $$LTGREEN$$%d$$FG$$ (0-127, 0 for none): ", row);
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cell->note = KeyGet(&sc);
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"%d\n", cell->note;
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if (cell->note) {
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@ -118,11 +132,10 @@ U0 EnterPattern(Pattern *pattern) {
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"SAMPLE\n";
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break;
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default:
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Print("Invalid choice.\n");
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cell->instrument = INSTRUMENT_NONE;
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"SINE\n";
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"SINE\n";
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break;
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// return;
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// return;
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}
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AudioPlayNote(cell->note, cell->velocity, cell->instrument);
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@ -216,4 +229,5 @@ U0 MusicTracker() {
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}
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}
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CleanupWaveformGen(); // Free the sample buffer
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Kill("Oscilloscope");
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}
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73
src/Home/Tracker/Oscilloscope.ZC
Executable file
73
src/Home/Tracker/Oscilloscope.ZC
Executable file
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@ -0,0 +1,73 @@
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// Globals
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U32 *gSharedBuffer;
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I64 gSharedBufferPosition = 0;
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I64 gSharedBufferSize;
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// Initialize shared buffer
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U0 InitSharedBuffer(I64 size) {
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gSharedBuffer = MAlloc(size * sizeof(U32));
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gSharedBufferSize = size;
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gSharedBufferPosition = 0;
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}
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// Update shared buffer in your audio playback function
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U0 UpdateSharedBuffer(U32 *buffer, I64 size) {
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I64 i;
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for (i = 0; i < size; i++) {
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gSharedBuffer[gSharedBufferPosition] = buffer[i];
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gSharedBufferPosition = (gSharedBufferPosition + 1) % gSharedBufferSize;
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}
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}
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U0 OscilloscopeDraw() {
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I64 i, y;
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//GrClear(0); // Clear the screen
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I64 startPosition = gSharedBufferPosition;
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for (i = 0; i < 400; i++) {
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I16 sample_value = (gSharedBuffer[startPosition] & 0xFFFF) - 32768; // extract left channel and center around 0
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F64 normalized_sample = ToF64(sample_value) / 32768.0;
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y = 300 / 2 - (normalized_sample * 300 / 2);
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GrPlot(i, y, WHITE); // Using GrPlot instead of DrawPoint
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startPosition = (startPosition + 1) % gSharedBufferSize;
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}
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}
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// Oscilloscope task
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U0 OscilloscopeTask() {
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// Fs->draw_it = &OscilloscopeDraw; // Set the draw callback
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while (TRUE)
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{
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Refresh;
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}
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}
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U0 StartOscilloscope() {
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InitSharedBuffer(44100); // For example, buffer to store 1 second of audio at 44100Hz
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// SettingsPush(); // Push current settings
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// Fs->win_width = 400; // Width of the oscilloscope window
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// Fs->win_height = 300; // Height of the oscilloscope window
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WinHorz((TEXT_COLS / 2) - 200,
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(TEXT_COLS / 2) - 200 + (200 - 1),
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Fs);
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WinVert((TEXT_ROWS / 2) - 150,
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(TEXT_ROWS / 2) - 150 + (Fs->win_height - 1),
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Fs);
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// Fs->border_src = BDS_CONST;
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// Fs->border_attr = LTGREEN << 4 + WHITE;
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// StrCopy(Fs->task_title, "Oscilloscope");
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Fs->draw_it = &OscilloscopeDraw; // Set the draw callback
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while (TRUE)
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{
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Refresh;
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}
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// Spawn("Oscilloscope", OscilloscopeTask); // Start the oscilloscope task
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// SettingsPop(); // Pop settings
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}
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9
src/Home/Tracker/Utils.ZC
Executable file
9
src/Home/Tracker/Utils.ZC
Executable file
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@ -0,0 +1,9 @@
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F64 RoundToNearestHalf(F64 value) {
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return Round(value * 2.0) / 2.0;
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}
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F64 GetPlaybackRateMultiplier(U8 targetNote, U8 referenceNote) {
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I64 semitoneDifference = targetNote - referenceNote;
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return Pow(2.0, semitoneDifference / 12.0);
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}
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@ -223,15 +223,6 @@ U0 LoadSample(U8 *filename) {
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// return ClampToI16(RoundF64(result));
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// }
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F64 RoundToNearestHalf(F64 value) {
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return Round(value * 2.0) / 2.0;
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}
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F64 GetPlaybackRateMultiplier(U8 targetNote, U8 referenceNote) {
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I64 semitoneDifference = targetNote - referenceNote;
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return Pow(2.0, semitoneDifference / 12.0);
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}
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U0 PlaySample(U32 *buffer, I64 duration, U8 note, U8 velocity) {
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if (!gSampleData || !gSampleSize) {
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Print("Sample not loaded.\n");
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