More musyx imps

src/musyx/hardware.c

@@ -0,0 +1,90 @@
+#include "musyx/musyx_priv.h"
+
+u8 salFrame;
+u8 salAuxFrame;
+u8 salNumVoices;
+u8 salMaxStudioNum;
+SND_HOOKS salHooks;
+u8 salTimeOffset;
+
+void snd_handle_irq() {
+  s32 i;
+  if (sndActive == 0) {
+    return;
+  }
+
+  streamCorrectLoops();
+  hwIRQEnterCriticalSection();
+  salCtrlDsp(salAiGetDest());
+  hwIRQLeaveCriticalSection();
+  hwIRQEnterCriticalSection();
+  salHandleAuxProcessing();
+  hwIRQLeaveCriticalSection();
+  hwIRQEnterCriticalSection();
+  salFrame ^= 1;
+  salAuxFrame = (salAuxFrame + 1) % 3;
+}
+s32 hwInit(u32* rate, u8 numVoices, u8 numStudios, u32 flags) {
+  hwInitIrq();
+  salFrame = 0;
+  salAuxFrame = 0;
+  salMessageCallback = NULL;
+  if (salInitAi(snd_handle_irq, flags, rate) == 0) {
+    // OSReport("Could not initialize AI.\n");
+  } else {
+    // OSReport("salInitAi() is done.\n\n");
+    if (salInitDspCtrl(numVoices, numStudios, flags & 1) == 0) {
+      // OSReport("Could not initialize DSP control logic.\n");
+    } else {
+      // OSReport("salInitDspCtrl() is done.\n\n");
+      if (salInitDsp(flags)) {
+        // OSReport("salInitDsp() is done.\n\n");
+        hwEnableIrq();
+        // OSReport("Starting AI DMA...\n\n");
+        salStartAi();
+        // OSReport("hwInit() done.\n\n");
+        return 0;
+      }
+      // OSReport("Could not initialize DSP.\n");
+    }
+  }
+  return -1;
+}
+
+void hwExit() {
+  hwDisableIrq();
+  salExitDsp();
+  salExitDspCtrl();
+  salExitAi();
+  hwEnableIrq();
+  hwExitIrq();
+}
+
+void hwSetTimeOffset(s8 offset) { salTimeOffset = offset; }
+
+u8 hwGetTimeOffset() { return salTimeOffset; }
+
+bool hwIsActive(s32 idx) { return dspVoice[idx].active != 0; }
+
+void hwSetMesgCallback(SND_MESSAGE_CALLBACK callback) { salMessageCallback = callback; }
+
+void hwSetPriority(s32 idx, s32 priority) { dspVoice[idx].priority = priority; }
+
+void hwInitSamplePlayback(s32 vid, u16 sampleId, u32* param_3, int param_4, u32 priority,
+                          u32 param_6, int param_7, u32 itdMode) {
+  u8 i;
+  s32 flags;
+  s32 tmpFlags;
+  flags = 0;
+  for (i = 0; i <= salTimeOffset; ++i) {
+    tmpFlags = dspVoice[vid].flags[i];
+    dspVoice[vid].flags[i] = 0;
+    flags |= tmpFlags & 0x20;
+  }
+
+  dspVoice[vid].flags[0] = flags;
+  dspVoice[vid].priority = priority;
+  dspVoice[vid]._18 = param_6;
+  dspVoice[vid].itdFlags = 0;
+  dspVoice[vid].sampleId = sampleId;
+}

src/musyx/reverb.c

@@ -0,0 +1,96 @@
+#include "math.h"
+#include "musyx/musyx_priv.h"
+
+static void DLsetdelay(_SND_REVHI_DELAYLINE* delayline, s32 len) {
+  delayline->outPoint = delayline->inPoint - (len * sizeof(f32));
+  while (delayline->outPoint < 0) {
+    delayline->outPoint += delayline->length;
+  }
+}
+
+static void DLcreate(_SND_REVHI_DELAYLINE* delayline, s32 length) {
+  delayline->length = length * sizeof(f32);
+  delayline->inputs = (f32*)salMalloc(length * sizeof(f32));
+  memset(delayline->inputs, 0, length * sizeof(length));
+  delayline->lastOutput = 0.f;
+  DLsetdelay(delayline, length * sizeof(f32));
+  delayline->inPoint = 0;
+  delayline->outPoint = 0;
+}
+
+static void DLdelete(_SND_REVHI_DELAYLINE* delayline) { salFree(delayline->inputs); }
+bool ReverbHICreate(_SND_REVHI_WORK* rev, f32 coloration, f32 time, f32 mix, f32 damping,
+                    f32 preDelay, f32 crosstalk) {
+  static int lens[] = {1789, 1999, 2333, 433, 149, 47, 73, 67};
+  u8 i;
+  u8 j;
+  if (coloration < 0.f || coloration > 1.f || time < 0.01f || time > 10.f || mix < 0.f ||
+      mix > 1.f || crosstalk < 0.f || crosstalk > 1.f || damping < 0.f || damping > 1.f ||
+      preDelay < 0.f || preDelay > 0.1f) {
+    return FALSE;
+  }
+
+  memset(rev, 0, sizeof(_SND_REVHI_WORK));
+
+  for (i = 0; i < 3; ++i) {
+    for (j = 0; j < 3; ++j) {
+      DLcreate(&rev->C[i], lens[j] + 2);
+      DLsetdelay(&rev->C[i], lens[j]);
+      rev->combCoef[j + i * 3] = pow(10.f, (lens[j] * -3) / (32000.f * time));
+    }
+
+    for (j = 0; j < 2; ++j) {
+      DLcreate(&rev->AP[i], lens[j + 3] + 2);
+      DLsetdelay(&rev->AP[i], lens[j + 3]);
+    }
+    DLcreate(&rev->AP[i], lens[i + 5] + 2);
+    DLsetdelay(&rev->AP[i], lens[i + 5]);
+    rev->lpLastout[i] = 0.f;
+  }
+
+  rev->allPassCoeff = coloration;
+  rev->level = mix;
+  rev->crosstalk = crosstalk;
+  rev->damping = damping;
+  if (rev->damping < 0.05f) {
+    rev->damping = 0.05f;
+  }
+
+  rev->damping = 1.f - ((rev->damping * 0.8f) + 0.5f);
+  if (preDelay != 0.f) {
+    rev->preDelayTime = preDelay * 32000.f;
+    for (i = 0; i < 3; ++i) {
+      rev->preDelayLine[i] = (f32*)salMalloc(rev->preDelayTime * sizeof(f32));
+      memset(rev->preDelayLine[i], 0, rev->preDelayTime * sizeof(f32));
+      rev->preDelayPtr[i] = rev->preDelayLine[i];
+    }
+  } else {
+    rev->preDelayTime = 0;
+    for (i = 0; i < 3; ++i) {
+      rev->preDelayPtr[i] = NULL;
+      rev->preDelayLine[i] = NULL;
+    }
+  }
+
+  return TRUE;
+}
+void DoCrossTalk() {}
+
+void HandleReverb_0() {}
+
+void ReverbHICallback() {}
+
+void ReverbHIFree(_SND_REVHI_WORK* rv) {
+  u8 i;
+  for (i = 0; i < 9; ++i) {
+    DLdelete(&rv->AP[i]);
+  }
+  for (i = 0; i < 9; ++i) {
+    DLdelete(&rv->C[i]);
+  }
+  if (rv->preDelayTime != 0) {
+    for (i = 0; i < 3; ++i) {
+      salFree(rv->preDelayLine[i]);
+    }
+  }
+}

src/musyx/snd_init.c

@@ -5,9 +5,7 @@ extern "C" {
 #endif
 
 /* TODO: Move these to a more approprate location */
-extern s8 sndActive;
-extern s8 synthIdleWaitActive;
-extern SynthInfo synthInfo;
+
 
 s32 DoInit(u32 rate, u32 aramSize, u8 voices, u32 flags) {
   dataInitStack();
@@ -24,7 +22,7 @@ s32 DoInit(u32 rate, u32 aramSize, u8 voices, u32 flags) {
 }
 
 s32 sndInit(u8 voices, u8 music, u8 sfx, u8 studios, u32 flags, u32 aramSize) {
-  s32 rate;
+  u32 rate;
   s32 ret;
 
   sndActive = 0;