Add EAX extensions (EAX 2.0-5.0, X-RAM) (#632)

* Add EAX extensions (EAX 2.0-5.0, X-RAM)

* Comment out C++17 leftovers

* Remove everything related to patching

* Update alsoftrc.sample

* Rewrite integration

* Fix GCC compilation under Linux

* Always reset EAX effect properties when loading it into FX slot

1 files changed, 106 insertions, 0 deletions

diff --git a/al/effects/effects.cpp b/al/effects/effects.cpp
new file mode 100644
index 00000000..55abfdc5
--- /dev/null
+++ b/al/effects/effects.cpp
@@ -0,0 +1,106 @@
+#if ALSOFT_EAX
+
+
+#include <cassert>
+
+#include "AL/efx.h"
+
+#include "effects.h"
+
+
+EaxEffectUPtr eax_create_eax_null_effect();
+
+EaxEffectUPtr eax_create_eax_chorus_effect(
+    EffectProps& al_effect_props);
+
+EaxEffectUPtr eax_create_eax_distortion_effect(
+    EffectProps& al_effect_props);
+
+EaxEffectUPtr eax_create_eax_echo_effect(
+    EffectProps& al_effect_props);
+
+EaxEffectUPtr eax_create_eax_flanger_effect(
+    EffectProps& al_effect_props);
+
+EaxEffectUPtr eax_create_eax_frequency_shifter_effect(
+    EffectProps& al_effect_props);
+
+EaxEffectUPtr eax_create_eax_vocal_morpher_effect(
+    EffectProps& al_effect_props);
+
+EaxEffectUPtr eax_create_eax_pitch_shifter_effect(
+    EffectProps& al_effect_props);
+
+EaxEffectUPtr eax_create_eax_ring_modulator_effect(
+    EffectProps& al_effect_props);
+
+EaxEffectUPtr eax_create_eax_auto_wah_effect(
+    EffectProps& al_effect_props);
+
+EaxEffectUPtr eax_create_eax_compressor_effect(
+    EffectProps& al_effect_props);
+
+EaxEffectUPtr eax_create_eax_equalizer_effect(
+    EffectProps& al_effect_props);
+
+EaxEffectUPtr eax_create_eax_reverb_effect(
+    EffectProps& al_effect_props);
+
+
+EaxEffectUPtr eax_create_eax_effect(
+    ALenum al_effect_type,
+    EffectProps& al_effect_props)
+{
+#define EAX_PREFIX "[EAX_MAKE_EAX_EFFECT] "
+
+    switch (al_effect_type)
+    {
+        case AL_EFFECT_NULL:
+            return eax_create_eax_null_effect();
+
+        case AL_EFFECT_CHORUS:
+            return eax_create_eax_chorus_effect(al_effect_props);
+
+        case AL_EFFECT_DISTORTION:
+            return eax_create_eax_distortion_effect(al_effect_props);
+
+        case AL_EFFECT_ECHO:
+            return eax_create_eax_echo_effect(al_effect_props);
+
+        case AL_EFFECT_FLANGER:
+            return eax_create_eax_flanger_effect(al_effect_props);
+
+        case AL_EFFECT_FREQUENCY_SHIFTER:
+            return eax_create_eax_frequency_shifter_effect(al_effect_props);
+
+        case AL_EFFECT_VOCAL_MORPHER:
+            return eax_create_eax_vocal_morpher_effect(al_effect_props);
+
+        case AL_EFFECT_PITCH_SHIFTER:
+            return eax_create_eax_pitch_shifter_effect(al_effect_props);
+
+        case AL_EFFECT_RING_MODULATOR:
+            return eax_create_eax_ring_modulator_effect(al_effect_props);
+
+        case AL_EFFECT_AUTOWAH:
+            return eax_create_eax_auto_wah_effect(al_effect_props);
+
+        case AL_EFFECT_COMPRESSOR:
+            return eax_create_eax_compressor_effect(al_effect_props);
+
+        case AL_EFFECT_EQUALIZER:
+            return eax_create_eax_equalizer_effect(al_effect_props);
+
+        case AL_EFFECT_EAXREVERB:
+            return eax_create_eax_reverb_effect(al_effect_props);
+
+        default:
+            assert(false && "Unsupported AL effect type.");
+            return nullptr;
+    }
+
+#undef EAX_PREFIX
+}
+
+
+#endif // ALSOFT_EAX