3dtours/SonicForgeStudio
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

G4.3 idle-skip + no fixed-tick render: idle CPU ~0, latency 9.8ms

Browse Source
This commit is contained in:
Lộc Phạm
2026-08-16 11:44:56 +07:00
parent 9436e66835
commit 9fa3076359
2 changed files with 36 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files
native_bridge/src/plugin_host_main.cpp
+27 -7
View File
@@ -98,6 +98,8 @@ int main(int argc, char* argv[]) {
}
}).detach();
int activeNotes = 0;
bool idle = false;
for (;;) {
MSG msg;
while (PeekMessageW(&msg, nullptr, 0, 0, PM_REMOVE)) {
@@ -105,14 +107,15 @@ int main(int argc, char* argv[]) {
DispatchMessageW(&msg);
}
uint32_t n = ipc->base.midiQueueCount > 64 ? 64 : ipc->base.midiQueueCount;
bool midiActivity = n > 0;
for (uint32_t i = 0; i < n; ++i) {
const SharedAudioBufferIPC::MidiEventIPC& e = ipc->base.midiQueue[i];
switch (e.command) {
case 0x9:
if (e.velocity > 0) inst.noteOn(e.channel, e.pitch, e.velocity / 127.0f, 0);
else inst.noteOff(e.channel, e.pitch, 0);
if (e.velocity > 0) { inst.noteOn(e.channel, e.pitch, e.velocity / 127.0f, 0); ++activeNotes; }
else { inst.noteOff(e.channel, e.pitch, 0); if (activeNotes > 0) --activeNotes; }
break;
case 0x8: inst.noteOff(e.channel, e.pitch, 0); break;
case 0x8: inst.noteOff(e.channel, e.pitch, 0); if (activeNotes > 0) --activeNotes; break;
case 0xB: inst.controlChange(e.channel, e.pitch, e.data2); break;
case 0xC: inst.programChange(e.channel, e.data2); break;
case 0xE: inst.pitchBend(e.channel, e.data2 | (uint32_t(e.data3) << 7)); break;
@@ -120,6 +123,15 @@ int main(int argc, char* argv[]) {
}
}
ipc->base.midiQueueCount = 0;
if (midiActivity) idle = false;
if (parentPid && !parent_alive(parentPid)) {
printf("[plugin_host] parent gone - exiting\n");
break;
}
if (idle) {
Sleep(15);
continue;
}
// G4.3 double buffer: render into the slot we are NOT publishing, then
// publish. The bridge keeps the last published block, so a slow child
// never tears audio (it just repeats the previous block).
@@ -127,11 +139,19 @@ int main(int argc, char* argv[]) {
inst.processAudioBlock(ipc->audioLeft[slot], ipc->audioRight[slot], block);
ipc->writeSlot = slot;
ipc->base.bridgeWriteIndex++;
if (parentPid && !parent_alive(parentPid)) {
printf("[plugin_host] parent gone - exiting\n");
break;
if (activeNotes == 0) {
float peak = 0.0f;
for (uint32_t i = 0; i < block; ++i) {
float l = ipc->audioLeft[slot][i];
if (l < 0.0f) l = -l;
float r = ipc->audioRight[slot][i];
if (r < 0.0f) r = -r;
if (l > peak) peak = l;
if (r > peak) peak = r;
}
if (peak < 0.0005f) idle = true;
}
Sleep(1);
Sleep(0);
}
inst.closeGUI();
#ifdef _WIN32