Add a new ALsoundfont object type

Includes a basic hierarchy for presets, instruments, samples, zones,
generators, and modulators.

1 files changed, 278 insertions, 66 deletions

diff --git a/Alc/midi/base.c b/Alc/midi/base.c
index 46c9b3d2..20d7a27c 100644
--- a/Alc/midi/base.c
+++ b/Alc/midi/base.c
@@ -8,6 +8,7 @@
 
 #include "midi/base.h"
 
+#include "alMidi.h"
 #include "alMain.h"
 #include "alError.h"
 #include "evtqueue.h"
@@ -22,6 +23,100 @@
 #define SYSEX_EVENT  (0xF0)
 
 
+void InitEvtQueue(EvtQueue *queue)
+{
+    queue->events = NULL;
+    queue->maxsize = 0;
+    queue->size = 0;
+    queue->pos = 0;
+}
+
+void ResetEvtQueue(EvtQueue *queue)
+{
+    ALsizei i;
+    for(i = 0;i < queue->size;i++)
+    {
+        if(queue->events[i].event == SYSEX_EVENT)
+        {
+            free(queue->events[i].param.sysex.data);
+            queue->events[i].param.sysex.data = NULL;
+        }
+    }
+
+    free(queue->events);
+    queue->events = NULL;
+    queue->maxsize = 0;
+    queue->size = 0;
+    queue->pos = 0;
+}
+
+ALenum InsertEvtQueue(EvtQueue *queue, const MidiEvent *evt)
+{
+    ALsizei pos;
+
+    if(queue->maxsize == queue->size)
+    {
+        if(queue->pos > 0)
+        {
+            /* Queue has some stale entries, remove them to make space for more
+             * events. */
+            for(pos = 0;pos < queue->pos;pos++)
+            {
+                if(queue->events[pos].event == SYSEX_EVENT)
+                {
+                    free(queue->events[pos].param.sysex.data);
+                    queue->events[pos].param.sysex.data = NULL;
+                }
+            }
+            memmove(&queue->events[0], &queue->events[queue->pos],
+                    (queue->size-queue->pos)*sizeof(queue->events[0]));
+            queue->size -= queue->pos;
+            queue->pos = 0;
+        }
+        else
+        {
+            /* Queue is full, double the allocated space. */
+            void *temp = NULL;
+            ALsizei newsize;
+
+            newsize = (queue->maxsize ? (queue->maxsize<<1) : 16);
+            if(newsize > queue->maxsize)
+                temp = realloc(queue->events, newsize * sizeof(queue->events[0]));
+            if(!temp)
+                return AL_OUT_OF_MEMORY;
+
+            queue->events = temp;
+            queue->maxsize = newsize;
+        }
+    }
+
+    pos = queue->pos;
+    if(queue->size > 0)
+    {
+        ALsizei high = queue->size - 1;
+        while(pos < high)
+        {
+            ALsizei mid = pos + (high-pos)/2;
+            if(queue->events[mid].time < evt->time)
+                pos = mid + 1;
+            else
+                high = mid;
+        }
+        while(pos < queue->size && queue->events[pos].time <= evt->time)
+            pos++;
+
+        if(pos < queue->size)
+            memmove(&queue->events[pos+1], &queue->events[pos],
+                    (queue->size-pos)*sizeof(queue->events[0]));
+    }
+
+    queue->events[pos] = *evt;
+    queue->size++;
+
+    return AL_NO_ERROR;
+}
+
+
 void MidiSynth_Construct(MidiSynth *self, ALCdevice *device)
 {
     InitEvtQueue(&self->EventQueue);
@@ -147,95 +242,212 @@ ALenum MidiSynth_insertSysExEvent(MidiSynth *self, ALuint64 time, const ALbyte *
 }
 
 
-void InitEvtQueue(EvtQueue *queue)
+void ALsfzone_Construct(ALsfzone *self)
 {
-    queue->events = NULL;
-    queue->maxsize = 0;
-    queue->size = 0;
-    queue->pos = 0;
+    self->Generators = NULL;
+    self->NumGenerators = 0;
+    self->GeneratorsMax = 0;
+
+    self->Modulators = NULL;
+    self->NumModulators = 0;
+    self->ModulatorsMax = 0;
+
+    self->Object = NULL;
 }
 
-void ResetEvtQueue(EvtQueue *queue)
+void ALsfzone_Destruct(ALsfzone *self)
+{
+    self->Object = NULL;
+
+    free(self->Modulators);
+    self->Modulators = NULL;
+    self->NumModulators = 0;
+    self->ModulatorsMax = 0;
+
+    free(self->Generators);
+    self->Generators = NULL;
+    self->NumGenerators = 0;
+    self->GeneratorsMax = 0;
+}
+
+ALenum ALsfzone_addGenerator(ALsfzone *self, ALenum generator, ALint value)
 {
     ALsizei i;
-    for(i = 0;i < queue->size;i++)
+    for(i = 0;i < self->NumGenerators;i++)
     {
-        if(queue->events[i].event == SYSEX_EVENT)
+        if(self->Generators[i].Generator == generator)
         {
-            free(queue->events[i].param.sysex.data);
-            queue->events[i].param.sysex.data = NULL;
+            self->Generators[i].Value = value;
+            return AL_NO_ERROR;
         }
     }
 
-    free(queue->events);
-    queue->events = NULL;
-    queue->maxsize = 0;
-    queue->size = 0;
-    queue->pos = 0;
+    if(self->NumGenerators == self->GeneratorsMax)
+    {
+        ALsizei newmax = 0;
+        ALvoid *temp = NULL;
+
+        newmax = (self->GeneratorsMax ? self->GeneratorsMax<<1 : 1);
+        if(newmax > self->GeneratorsMax)
+            temp = realloc(self->Generators, newmax * sizeof(ALsfgenerator));
+        if(!temp) return AL_OUT_OF_MEMORY;
+
+        self->Generators = temp;
+        self->GeneratorsMax = newmax;
+    }
+
+    self->Generators[self->NumGenerators].Generator = generator;
+    self->Generators[self->NumGenerators].Value = value;
+    self->NumGenerators++;
+
+    return AL_NO_ERROR;
 }
 
-ALenum InsertEvtQueue(EvtQueue *queue, const MidiEvent *evt)
+ALenum ALsfzone_addModulator(ALsfzone *self, ALenum sourceop, ALenum destop, ALint amount, ALenum amtsourceop, ALenum transop)
 {
-    ALsizei pos;
-
-    if(queue->maxsize == queue->size)
+    ALsizei i;
+    for(i = 0;i < self->NumModulators;i++)
     {
-        if(queue->pos > 0)
+        if(self->Modulators[i].SourceOp == sourceop && self->Modulators[i].DestOp == destop &&
+           self->Modulators[i].AmountSourceOp == amtsourceop &&
+           self->Modulators[i].TransformOp == transop)
         {
-            /* Queue has some stale entries, remove them to make space for more
-             * events. */
-            for(pos = 0;pos < queue->pos;pos++)
-            {
-                if(queue->events[pos].event == SYSEX_EVENT)
-                {
-                    free(queue->events[pos].param.sysex.data);
-                    queue->events[pos].param.sysex.data = NULL;
-                }
-            }
-            memmove(&queue->events[0], &queue->events[queue->pos],
-                    (queue->size-queue->pos)*sizeof(queue->events[0]));
-            queue->size -= queue->pos;
-            queue->pos = 0;
+            self->Modulators[i].Amount = amount;
+            return AL_NO_ERROR;
         }
-        else
-        {
-            /* Queue is full, double the allocated space. */
-            void *temp = NULL;
-            ALsizei newsize;
+    }
 
-            newsize = (queue->maxsize ? (queue->maxsize<<1) : 16);
-            if(newsize > queue->maxsize)
-                temp = realloc(queue->events, newsize * sizeof(queue->events[0]));
-            if(!temp)
-                return AL_OUT_OF_MEMORY;
+    if(self->NumModulators == self->ModulatorsMax)
+    {
+        ALsizei newmax = 0;
+        ALvoid *temp = NULL;
 
-            queue->events = temp;
-            queue->maxsize = newsize;
-        }
+        newmax = (self->ModulatorsMax ? self->ModulatorsMax<<1 : 1);
+        if(newmax > self->ModulatorsMax)
+            temp = realloc(self->Modulators, newmax * sizeof(ALsfmodulator));
+        if(!temp) return AL_OUT_OF_MEMORY;
+
+        self->Modulators = temp;
+        self->ModulatorsMax = newmax;
     }
 
-    pos = queue->pos;
-    if(queue->size > 0)
+    self->Modulators[self->NumModulators].SourceOp = sourceop;
+    self->Modulators[self->NumModulators].DestOp = destop;
+    self->Modulators[self->NumModulators].Amount = amount;
+    self->Modulators[self->NumModulators].AmountSourceOp = amtsourceop;
+    self->Modulators[self->NumModulators].TransformOp = transop;
+    self->NumModulators++;
+
+    return AL_NO_ERROR;
+}
+
+/* Stores a new object pointer in the zone. Returns the old object pointer. */
+ALvoid *ALsfzone_setRefObject(ALsfzone *self, ALvoid *object)
+{
+    ALvoid *oldobj = self->Object;
+    self->Object = object;
+    return oldobj;
+}
+
+
+void ALsfsample_Construct(ALsfsample *self)
+{
+    self->ref = 0;
+
+    self->id = 0;
+}
+
+void ALsfsample_Destruct(ALsfsample *self)
+{
+    self->id = 0;
+}
+
+
+void ALsfinstrument_Construct(ALsfinstrument *self)
+{
+    self->ref = 0;
+
+    self->Zones = NULL;
+    self->NumZones = 0;
+
+    self->id = 0;
+}
+
+void ALsfinstrument_Destruct(ALsfinstrument *self)
+{
+    ALsizei i;
+
+    self->id = 0;
+
+    for(i = 0;i < self->NumZones;i++)
     {
-        ALsizei high = queue->size - 1;
-        while(pos < high)
-        {
-            ALsizei mid = pos + (high-pos)/2;
-            if(queue->events[mid].time < evt->time)
-                pos = mid + 1;
-            else
-                high = mid;
-        }
-        while(pos < queue->size && queue->events[pos].time <= evt->time)
-            pos++;
+        if(self->Zones[i].Object)
+            DecrementRef(&((ALsfsample*)self->Zones[i].Object)->ref);
+        ALsfzone_Destruct(&self->Zones[i]);
+    }
+    free(self->Zones);
+    self->Zones = NULL;
+    self->NumZones = 0;
+}
 
-        if(pos < queue->size)
-            memmove(&queue->events[pos+1], &queue->events[pos],
-                    (queue->size-pos)*sizeof(queue->events[0]));
+
+void ALsfpreset_Construct(ALsfpreset *self)
+{
+    self->ref = 0;
+
+    self->Zones = NULL;
+    self->NumZones = 0;
+
+    self->id = 0;
+}
+
+void ALsfpreset_Destruct(ALsfpreset *self)
+{
+    ALsizei i;
+
+    self->id = 0;
+
+    for(i = 0;i < self->NumZones;i++)
+    {
+        if(self->Zones[i].Object)
+            DecrementRef(&((ALsfinstrument*)self->Zones[i].Object)->ref);
+        ALsfzone_Destruct(&self->Zones[i]);
     }
+    free(self->Zones);
+    self->Zones = NULL;
+    self->NumZones = 0;
+}
 
-    queue->events[pos] = *evt;
-    queue->size++;
 
-    return AL_NO_ERROR;
+void ALsoundfont_Construct(ALsoundfont *self)
+{
+    self->ref = 0;
+
+    self->Presets = NULL;
+    self->NumPresets = 0;
+
+    self->SampleData = NULL;
+    self->SampleDataLen = 0;
+
+    self->id = 0;
+}
+
+void ALsoundfont_Destruct(ALsoundfont *self)
+{
+    ALsizei i;
+
+    self->id = 0;
+
+    for(i = 0;i < self->NumPresets;i++)
+    {
+        DecrementRef(&self->Presets[i]->ref);
+        self->Presets[i] = NULL;
+    }
+    free(self->Presets);
+    self->Presets = NULL;
+    self->NumPresets = 0;
+
+    free(self->SampleData);
+    self->SampleData = NULL;
+    self->SampleDataLen = 0;
 }