[PATCH 1/2] dsdmo: Add Echo FX Support

[Alistair Leslie-Hughes]

From: Alistair Leslie-Hughes

---
 dlls/dsdmo/dsdmo.idl |  8 ++++
 dlls/dsdmo/main.c    | 97 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 105 insertions(+)

diff --git a/dlls/dsdmo/dsdmo.idl b/dlls/dsdmo/dsdmo.idl
index 7f172084828..c8130f8a1ce 100644
--- a/dlls/dsdmo/dsdmo.idl
+++ b/dlls/dsdmo/dsdmo.idl
@@ -41,3 +41,11 @@ coclass DirectSoundParamEqDMO {}
     uuid(87fc0268-9a55-4360-95aa-004a1d9de26c)
 ]
 coclass DirectSoundWavesReverbDMO {}
+
+[
+    uuid(ef3e932c-d40b-4f51-8ccf-3f98f1b29d5d),
+    threading(both),
+    progid("Microsoft.DirectSoundEchoDMO.1"),
+    vi_progid("Microsoft.DirectSoundEchoDMO")
+]
+coclass DirectSoundEchoDMO {}
diff --git a/dlls/dsdmo/main.c b/dlls/dsdmo/main.c
index 3b106a8f633..200293f5214 100644
--- a/dlls/dsdmo/main.c
+++ b/dlls/dsdmo/main.c
@@ -947,6 +947,102 @@ static HRESULT waves_reverb_create(IUnknown *outer, IUnknown **out)
     return S_OK;
 }

+struct dmo_echofx
+{
+    struct effect effect;
+    IDirectSoundFXEcho  IDirectSoundFXEcho_iface;
+};
+
+static inline struct dmo_echofx *impl_from_IDirectSoundFXEcho(IDirectSoundFXEcho *iface)
+{
+    return CONTAINING_RECORD(iface, struct dmo_echofx, IDirectSoundFXEcho_iface);
+}
+
+static HRESULT WINAPI echofx_QueryInterface(IDirectSoundFXEcho *iface, REFIID iid, void **out)
+{
+    struct dmo_echofx *effect = impl_from_IDirectSoundFXEcho(iface);
+    return IUnknown_QueryInterface(effect->effect.outer_unk, iid, out);
+}
+
+static ULONG WINAPI echofx_AddRef(IDirectSoundFXEcho *iface)
+{
+    struct dmo_echofx *effect = impl_from_IDirectSoundFXEcho(iface);
+    return IUnknown_AddRef(effect->effect.outer_unk);
+}
+
+static ULONG WINAPI echofx_Release(IDirectSoundFXEcho *iface)
+{
+    struct dmo_echofx *effect = impl_from_IDirectSoundFXEcho(iface);
+    return IUnknown_Release(effect->effect.outer_unk);
+}
+
+static HRESULT WINAPI echofx_SetAllParameters(IDirectSoundFXEcho *iface, const DSFXEcho *echo)
+{
+    struct dmo_echofx *effect = impl_from_IDirectSoundFXEcho(iface);
+    FIXME("(%p) %p\n", effect, echo);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI echofx_GetAllParameters(IDirectSoundFXEcho *iface, DSFXEcho *echo)
+{
+    struct dmo_echofx *effect = impl_from_IDirectSoundFXEcho(iface);
+    FIXME("(%p) %p\n", effect, echo);
+
+    return E_NOTIMPL;
+}
+
+static const struct IDirectSoundFXEchoVtbl echofx_vtbl =
+{
+    echofx_QueryInterface,
+    echofx_AddRef,
+    echofx_Release,
+    echofx_SetAllParameters,
+    echofx_GetAllParameters
+};
+
+static struct dmo_echofx *impl_echo_from_effect(struct effect *iface)
+{
+    return CONTAINING_RECORD(iface, struct dmo_echofx, effect);
+}
+
+static void *echo_query_interface(struct effect *iface, REFIID iid)
+{
+    struct dmo_echofx *effect = impl_echo_from_effect(iface);
+
+    if (IsEqualGUID(iid, &IID_IDirectSoundFXEcho))
+        return &effect->IDirectSoundFXEcho_iface;
+    return NULL;
+}
+
+static void echo_destroy(struct effect *iface)
+{
+    struct dmo_echofx *effect = impl_echo_from_effect(iface);
+
+    free(effect);
+}
+
+static const struct effect_ops echo_ops =
+{
+    .destroy = echo_destroy,
+    .query_interface = echo_query_interface,
+};
+
+static HRESULT echo_create(IUnknown *outer, IUnknown **out)
+{
+    struct dmo_echofx *object;
+
+    if (!(object = calloc(1, sizeof(*object))))
+        return E_OUTOFMEMORY;
+
+    effect_init(&object->effect, outer, &echo_ops);
+    object->IDirectSoundFXEcho_iface.lpVtbl = &echofx_vtbl;
+
+    TRACE("Created echo effect %p.\n", object);
+    *out = &object->effect.IUnknown_inner;
+    return S_OK;
+}
+
 struct class_factory
 {
     IClassFactory IClassFactory_iface;
@@ -1031,6 +1127,7 @@ class_factories[] =
     {&GUID_DSFX_STANDARD_I3DL2REVERB,   {{&class_factory_vtbl}, reverb_create}},
     {&GUID_DSFX_STANDARD_PARAMEQ,       {{&class_factory_vtbl}, eq_create}},
     {&GUID_DSFX_WAVES_REVERB,           {{&class_factory_vtbl}, waves_reverb_create}},
+    {&GUID_DSFX_STANDARD_ECHO,          {{&class_factory_vtbl}, echo_create}},
 };

HRESULT WINAPI DllGetClassObject(REFCLSID clsid, REFIID iid, void **out)