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audio: getFreePlayhead()

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minjaesong
2026-06-07 02:21:21 +09:00
parent 3444bdf63b
commit aa45c2194f
11 changed files with 124 additions and 81 deletions
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20
assets/disk0/tvdos/bin/playtev.js
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@@ -100,10 +100,14 @@ graphics.clearPixels(0)
graphics.clearPixels2(0)
// Initialize audio
audio.resetParams(0)
audio.purgeQueue(0)
audio.setPcmMode(0)
audio.setMasterVolume(0, 255)
// Occupy the first idle playhead rather than always grabbing #0, so playback
// doesn't cut off audio already running on another playhead. Falls back to #0
// when all four are busy.
const PLAYHEAD = audio.getFreePlayhead(0)
audio.resetParams(PLAYHEAD)
audio.purgeQueue(PLAYHEAD)
audio.setPcmMode(PLAYHEAD)
audio.setMasterVolume(PLAYHEAD, 255)
// set colour zero as half-opaque black
graphics.setPalette(0, 0, 0, 0, 9)
@@ -791,14 +795,14 @@ try {
if (isInterlaced) {
// fire audio after frame 1
if (!audioFired && frameCount > 0) {
audio.play(0)
audio.play(PLAYHEAD)
audioFired = true
}
}
else {
// fire audio after frame 0
if (!audioFired) {
audio.play(0)
audio.play(PLAYHEAD)
audioFired = true
}
}
@@ -900,8 +904,8 @@ finally {
if (PREV_FIELD_BUFFER > 0) sys.free(PREV_FIELD_BUFFER)
if (NEXT_FIELD_BUFFER > 0) sys.free(NEXT_FIELD_BUFFER)
audio.stop(0)
audio.purgeQueue(0)
audio.stop(PLAYHEAD)
audio.purgeQueue(PLAYHEAD)
if (interactive) {
//con.clear()