[EAX] Add separate effect state for each version (#705)

* [EAX] Add separate effect state for each version

* [EAX] Don't use EAX call as data member

1 files changed, 212 insertions, 0 deletions

diff --git a/al/eax/call.cpp b/al/eax/call.cpp
new file mode 100644
index 00000000..1fd05968
--- /dev/null
+++ b/al/eax/call.cpp
@@ -0,0 +1,212 @@
+#include "config.h"
+#include "call.h"
+#include "exception.h"
+
+namespace {
+
+constexpr auto deferred_flag = 0x80000000U;
+
+class EaxCallException : public EaxException {
+public:
+    explicit EaxCallException(const char* message)
+        : EaxException{"EAX_CALL", message}
+    {}
+}; // EaxCallException
+
+} // namespace
+
+EaxCall::EaxCall(
+    EaxCallType type,
+    const GUID& property_set_guid,
+    ALuint property_id,
+    ALuint property_source_id,
+    ALvoid* property_buffer,
+    ALuint property_size)
+    : type_{type}, version_{0}, property_set_id_{EaxCallPropertySetId::none}
+    , property_id_{property_id & ~deferred_flag}, property_source_id_{property_source_id}
+    , property_buffer_{property_buffer}, property_size_{property_size}
+{
+    switch (type_)
+    {
+        case EaxCallType::get:
+        case EaxCallType::set:
+            break;
+
+        default:
+            fail("Invalid type.");
+    }
+
+    if (false)
+    {
+    }
+    else if (property_set_guid == EAXPROPERTYID_EAX40_Context)
+    {
+        version_ = 4;
+        property_set_id_ = EaxCallPropertySetId::context;
+    }
+    else if (property_set_guid == EAXPROPERTYID_EAX50_Context)
+    {
+        version_ = 5;
+        property_set_id_ = EaxCallPropertySetId::context;
+    }
+    else if (property_set_guid == DSPROPSETID_EAX20_ListenerProperties)
+    {
+        version_ = 2;
+        fx_slot_index_ = 0u;
+        property_set_id_ = EaxCallPropertySetId::fx_slot_effect;
+    }
+    else if (property_set_guid == DSPROPSETID_EAX30_ListenerProperties)
+    {
+        version_ = 3;
+        fx_slot_index_ = 0u;
+        property_set_id_ = EaxCallPropertySetId::fx_slot_effect;
+    }
+    else if (property_set_guid == EAXPROPERTYID_EAX40_FXSlot0)
+    {
+        version_ = 4;
+        fx_slot_index_ = 0u;
+        property_set_id_ = EaxCallPropertySetId::fx_slot;
+    }
+    else if (property_set_guid == EAXPROPERTYID_EAX50_FXSlot0)
+    {
+        version_ = 5;
+        fx_slot_index_ = 0u;
+        property_set_id_ = EaxCallPropertySetId::fx_slot;
+    }
+    else if (property_set_guid == EAXPROPERTYID_EAX40_FXSlot1)
+    {
+        version_ = 4;
+        fx_slot_index_ = 1u;
+        property_set_id_ = EaxCallPropertySetId::fx_slot;
+    }
+    else if (property_set_guid == EAXPROPERTYID_EAX50_FXSlot1)
+    {
+        version_ = 5;
+        fx_slot_index_ = 1u;
+        property_set_id_ = EaxCallPropertySetId::fx_slot;
+    }
+    else if (property_set_guid == EAXPROPERTYID_EAX40_FXSlot2)
+    {
+        version_ = 4;
+        fx_slot_index_ = 2u;
+        property_set_id_ = EaxCallPropertySetId::fx_slot;
+    }
+    else if (property_set_guid == EAXPROPERTYID_EAX50_FXSlot2)
+    {
+        version_ = 5;
+        fx_slot_index_ = 2u;
+        property_set_id_ = EaxCallPropertySetId::fx_slot;
+    }
+    else if (property_set_guid == EAXPROPERTYID_EAX40_FXSlot3)
+    {
+        version_ = 4;
+        fx_slot_index_ = 3u;
+        property_set_id_ = EaxCallPropertySetId::fx_slot;
+    }
+    else if (property_set_guid == EAXPROPERTYID_EAX50_FXSlot3)
+    {
+        version_ = 5;
+        fx_slot_index_ = 3u;
+        property_set_id_ = EaxCallPropertySetId::fx_slot;
+    }
+    else if (property_set_guid == DSPROPSETID_EAX20_BufferProperties)
+    {
+        version_ = 2;
+        property_set_id_ = EaxCallPropertySetId::source;
+    }
+    else if (property_set_guid == DSPROPSETID_EAX30_BufferProperties)
+    {
+        version_ = 3;
+        property_set_id_ = EaxCallPropertySetId::source;
+    }
+    else if (property_set_guid == EAXPROPERTYID_EAX40_Source)
+    {
+        version_ = 4;
+        property_set_id_ = EaxCallPropertySetId::source;
+    }
+    else if (property_set_guid == EAXPROPERTYID_EAX50_Source)
+    {
+        version_ = 5;
+        property_set_id_ = EaxCallPropertySetId::source;
+    }
+    else if (property_set_guid == DSPROPSETID_EAX_ReverbProperties)
+    {
+        version_ = 1;
+        fx_slot_index_ = 0u;
+        property_set_id_ = EaxCallPropertySetId::fx_slot_effect;
+    }
+    else if (property_set_guid == DSPROPSETID_EAXBUFFER_ReverbProperties)
+    {
+        version_ = 1;
+        property_set_id_ = EaxCallPropertySetId::source;
+    }
+    else
+    {
+        fail("Unsupported property set id.");
+    }
+
+    if (version_ < 1 || version_ > 5)
+    {
+        fail("EAX version out of range.");
+    }
+
+    if(!(property_id&deferred_flag))
+    {
+        if(property_set_id_ != EaxCallPropertySetId::fx_slot && property_id_ != 0)
+        {
+            if (property_buffer == nullptr)
+            {
+                fail("Null property buffer.");
+            }
+
+            if (property_size == 0)
+            {
+                fail("Empty property.");
+            }
+        }
+    }
+
+    if(property_set_id_ == EaxCallPropertySetId::source && property_source_id_ == 0)
+    {
+        fail("Null AL source id.");
+    }
+
+    if (property_set_id_ == EaxCallPropertySetId::fx_slot)
+    {
+        if (property_id_ < EAXFXSLOT_NONE)
+        {
+            property_set_id_ = EaxCallPropertySetId::fx_slot_effect;
+        }
+    }
+}
+
+[[noreturn]] void EaxCall::fail(const char* message)
+{
+    throw EaxCallException{message};
+}
+
+[[noreturn]] void EaxCall::fail_too_small()
+{
+    fail("Property buffer too small.");
+}
+
+EaxCall create_eax_call(
+    EaxCallType type,
+    const GUID* property_set_id,
+    ALuint property_id,
+    ALuint property_source_id,
+    ALvoid* property_buffer,
+    ALuint property_size)
+{
+    if(!property_set_id)
+        throw EaxCallException{"Null property set ID."};
+
+    return EaxCall{
+        type,
+        *property_set_id,
+        property_id,
+        property_source_id,
+        property_buffer,
+        property_size
+    };
+}