mirror of
https://github.com/curioustorvald/tsvm.git
synced 2026-06-06 21:44:04 +09:00
Soundscope for tracker
This commit is contained in:
minjaesong
@@ -18,6 +18,7 @@ import java.util.BitSet
|
||||
import kotlin.math.abs
|
||||
import kotlin.math.ceil
|
||||
import kotlin.math.floor
|
||||
import kotlin.math.ln
|
||||
import kotlin.math.roundToInt
|
||||
|
||||
/**
|
||||
@@ -25,9 +26,11 @@ import kotlin.math.roundToInt
|
||||
*/
|
||||
class AudioMenu(parent: VMEmuExecutable, x: Int, y: Int, w: Int, h: Int) : EmuMenu(parent, x, y, w, h) {
|
||||
|
||||
// Per-playhead view mode: 0=detailed pattern, 1=abridged pattern (stub), 2=super-abridged (stub), 3=cuesheet detail
|
||||
// Per-playhead view mode: 0=detailed pattern, 1=abridged pattern (stub), 2=super-abridged (stub),
|
||||
// 3=cuesheet detail, 4=per-voice waveform
|
||||
private val scopeMode = IntArray(4)
|
||||
private val scopeScrollHorz = IntArray(4)
|
||||
private val SCOPE_MODE_COUNT = 5
|
||||
|
||||
override fun show() {
|
||||
}
|
||||
@@ -50,7 +53,7 @@ class AudioMenu(parent: VMEmuExecutable, x: Int, y: Int, w: Int, h: Int) : EmuMe
|
||||
val syTop = h - 7 - 115 * i - 8 * FONT.H
|
||||
val syBot = h - 3 - 115 * i
|
||||
if (my in syTop..syBot) {
|
||||
scopeMode[3 - i] = (scopeMode[3 - i] + 1) and 3
|
||||
scopeMode[3 - i] = (scopeMode[3 - i] + 1) % SCOPE_MODE_COUNT
|
||||
break
|
||||
}
|
||||
}
|
||||
@@ -72,7 +75,7 @@ class AudioMenu(parent: VMEmuExecutable, x: Int, y: Int, w: Int, h: Int) : EmuMe
|
||||
val syTop = h - 7 - 115 * i - 8 * FONT.H
|
||||
val syBot = h - 3 - 115 * i
|
||||
if (my in syTop..syBot) {
|
||||
scopeMode[3 - i] = (scopeMode[3 - i] - 1) and 3
|
||||
scopeMode[3 - i] = (scopeMode[3 - i] + SCOPE_MODE_COUNT - 1) % SCOPE_MODE_COUNT
|
||||
break
|
||||
}
|
||||
}
|
||||
@@ -261,6 +264,64 @@ class AudioMenu(parent: VMEmuExecutable, x: Int, y: Int, w: Int, h: Int) : EmuMe
|
||||
private fun bipolarCeil(d: Double) = (if (d >= 0.0) ceil(d) else floor(d)).toInt()
|
||||
private fun bipolarFloor(d: Double) = (if (d >= 0.0) floor(d) else ceil(d)).toInt()
|
||||
|
||||
/**
|
||||
* Find the most-recent rising-edge zero crossing in [buf] that has at least
|
||||
* [cellW]/2 samples of context on either side, and return its position as a
|
||||
* sub-sample-accurate "age" (samples since the oldest sample at [writePos]).
|
||||
* Returns -1.0 if no usable crossing exists — the caller should then fall back
|
||||
* to a free-running display.
|
||||
*/
|
||||
private fun findTriggerAge(buf: FloatArray, writePos: Int, cellW: Int): Double {
|
||||
val bufSize = buf.size
|
||||
val mask = bufSize - 1
|
||||
val halfW = cellW / 2
|
||||
val maxAge = bufSize - halfW // exclusive: rightmost trigger that still has cellW/2 right-side samples
|
||||
val minAge = halfW // inclusive: leftmost trigger that still has cellW/2 left-side samples
|
||||
if (maxAge - 1 <= minAge) return -1.0 // cell is too wide vs the buffer
|
||||
|
||||
// Walk newest → oldest within the search window. The most-recent crossing gives
|
||||
// the freshest snapshot on the right of the trigger, so the eye sees the least lag.
|
||||
var newer = buf[(writePos + maxAge - 1) and mask]
|
||||
for (age in maxAge - 2 downTo minAge) {
|
||||
val older = buf[(writePos + age) and mask]
|
||||
if (older < 0f && newer >= 0f) {
|
||||
// Linear interpolation between the two bracketing samples.
|
||||
val denom = (newer - older)
|
||||
val frac = if (denom > 1e-9f) (-older) / denom else 0f
|
||||
return age + frac.toDouble()
|
||||
}
|
||||
newer = older
|
||||
}
|
||||
return -1.0
|
||||
}
|
||||
|
||||
/**
|
||||
* Pick a cols × rows grid for `n` waveform cells inside an `areaW × areaH` box.
|
||||
* Optimises for cell aspect close to [targetAspect] (in log-space, so 6:1 and 1.5:1
|
||||
* are penalised equally relative to 3:1) and lightly penalises wasted cells. Wide
|
||||
* scope areas naturally get more columns than rows; tall ones flip the other way.
|
||||
*/
|
||||
private fun pickWaveformGrid(n: Int, areaW: Int, areaH: Int): IntArray {
|
||||
val targetAspect = 3.0
|
||||
val wastePenalty = 0.3
|
||||
var bestCols = 1
|
||||
var bestRows = n
|
||||
var bestScore = Double.POSITIVE_INFINITY
|
||||
for (cols in 1..n) {
|
||||
val rows = (n + cols - 1) / cols
|
||||
val cellW = areaW.toDouble() / cols
|
||||
val cellH = areaH.toDouble() / rows
|
||||
val aspect = cellW / cellH
|
||||
val score = abs(ln(aspect / targetAspect)) + wastePenalty * (cols * rows - n)
|
||||
if (score < bestScore) {
|
||||
bestScore = score
|
||||
bestCols = cols
|
||||
bestRows = rows
|
||||
}
|
||||
}
|
||||
return intArrayOf(bestCols, bestRows)
|
||||
}
|
||||
|
||||
private val VOX_PER_VIEW = arrayOf(6,20,20)
|
||||
private val VOL_SYM = arrayOf('@','^','&',' ')
|
||||
private val PAN_SYM = arrayOf('@','<','>',' ')
|
||||
@@ -376,6 +437,91 @@ class AudioMenu(parent: VMEmuExecutable, x: Int, y: Int, w: Int, h: Int) : EmuMe
|
||||
}
|
||||
}
|
||||
|
||||
// ── Mode 4: Per-voice waveform ───────────────────────────────────
|
||||
// Tile one waveform cell per "currently used" voice (cue-sheet
|
||||
// pattern number != 0xFFF). The soundscope area is wide and short,
|
||||
// so a cols × rows grid uses the space far better than a vertical
|
||||
// stack — pickWaveformGrid() picks a layout that keeps cells roughly
|
||||
// 3:1 wide while minimising empty slots.
|
||||
4 -> {
|
||||
val cuePats = IntArray(20) { vi -> readCuePat12(audio, cuePos, vi) }
|
||||
val activeVoiceIndices = (0 until 20).filter { cuePats[it] != 0xFFF }
|
||||
if (activeVoiceIndices.isEmpty()) {
|
||||
batch.color = COL_SOUNDSCOPE_FORE
|
||||
FONT.draw(batch, "No active voices", x, y + 4)
|
||||
} else {
|
||||
val scopeH = 8 * FONT.H + 4
|
||||
val scopeW = 512
|
||||
val n = activeVoiceIndices.size
|
||||
val grid = pickWaveformGrid(n, scopeW, scopeH)
|
||||
val cols = grid[0]
|
||||
val rows = grid[1]
|
||||
val cellW = scopeW / cols
|
||||
val cellH = scopeH / rows
|
||||
val halfH = ((cellH - 2) / 2).coerceAtLeast(1)
|
||||
val voices = ts.voices
|
||||
val drawLabel = cellH >= TINY.H + 1 && cellW >= 12
|
||||
|
||||
// Faint grid separators between cells.
|
||||
batch.color = COL_TRACKER_ROW
|
||||
for (r in 1 until rows) batch.fillRect(x, y + r * cellH, scopeW, 1)
|
||||
for (c in 1 until cols) batch.fillRect(x + c * cellW, y, 1, scopeH)
|
||||
|
||||
for ((slot, vi) in activeVoiceIndices.withIndex()) {
|
||||
val voice = voices.getOrNull(vi) ?: continue
|
||||
val col = slot % cols
|
||||
val row = slot / cols
|
||||
val cellX = x + col * cellW
|
||||
val cellY = y + row * cellH
|
||||
val centerY = cellY + cellH / 2
|
||||
|
||||
// baseline
|
||||
batch.color = COL_TRACKER_ROW
|
||||
batch.fillRect(cellX, centerY, cellW, 1)
|
||||
|
||||
// waveform — anchor the cell centre on the most recent
|
||||
// sub-sample-accurate rising-edge zero crossing so that
|
||||
// periodic signals appear stationary (oscilloscope trigger).
|
||||
// Falls back to a free-running, oldest→newest sweep when no
|
||||
// usable trigger is found (e.g. silent voice or sub-sub-Hz tone).
|
||||
batch.color = COL_VOICE_PALETTE[vi % COL_VOICE_PALETTE.size]
|
||||
val buf = voice.scopeBuffer
|
||||
val bufSize = buf.size
|
||||
val mask = bufSize - 1
|
||||
val writePos = voice.scopeWritePos
|
||||
val centerCol = cellW / 2
|
||||
val triggerAge = findTriggerAge(buf, writePos, cellW)
|
||||
val freeRunStep = (bufSize - 1).toDouble() / (cellW - 1).coerceAtLeast(1)
|
||||
for (sx in 0 until cellW) {
|
||||
val readAge = if (triggerAge >= 0.0)
|
||||
triggerAge + (sx - centerCol).toDouble()
|
||||
else
|
||||
sx * freeRunStep
|
||||
val baseAge = floor(readAge).toInt()
|
||||
val frac = (readAge - baseAge).toFloat()
|
||||
val a = buf[(writePos + baseAge) and mask]
|
||||
val b = buf[(writePos + baseAge + 1) and mask]
|
||||
val v = ((1f - frac) * a + frac * b).coerceIn(-1f, 1f)
|
||||
val h = (v * halfH).roundToInt()
|
||||
if (h == 0) {
|
||||
batch.fillRect(cellX + sx, centerY, 1, 1)
|
||||
} else if (h > 0) {
|
||||
batch.fillRect(cellX + sx, centerY, 1, h)
|
||||
} else {
|
||||
batch.fillRect(cellX + sx, centerY + h, 1, -h)
|
||||
}
|
||||
}
|
||||
|
||||
// voice index label (top-left of cell), only when there is room
|
||||
if (drawLabel) {
|
||||
batch.color = COL_VOICE_PALETTE[vi % COL_VOICE_PALETTE.size]
|
||||
TINY.draw(batch, vi.toString(16).padStart(2, '0').uppercase(),
|
||||
cellX + 1, cellY)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// ── Mode 0: Detailed pattern with colour-coded fields ────────────
|
||||
// ── Mode 1: Abridged pattern with colour-coded fields ────────────
|
||||
// ── Mode 2: Super-abridged pattern with colour-coded fields ────────────
|
||||
|
||||
Reference in New Issue
Block a user