1 files changed, 108 insertions, 0 deletions
diff --git a/al/effects/echo.cpp b/al/effects/echo.cpp
new file mode 100644
index 00000000..b242a9cd
--- /dev/null
+++ b/al/effects/echo.cpp
@@ -0,0 +1,108 @@
+
+#include "config.h"
+
+#include "AL/al.h"
+#include "AL/efx.h"
+
+#include "effects.h"
+#include "effects/base.h"
+
+
+namespace {
+
+void Echo_setParami(EffectProps*, ALenum param, int)
+{ throw effect_exception{AL_INVALID_ENUM, "Invalid echo integer property 0x%04x", param}; }
+void Echo_setParamiv(EffectProps*, ALenum param, const int*)
+{ throw effect_exception{AL_INVALID_ENUM, "Invalid echo integer-vector property 0x%04x", param}; }
+void Echo_setParamf(EffectProps *props, ALenum param, float val)
+{
+    switch(param)
+    {
+    case AL_ECHO_DELAY:
+        if(!(val >= AL_ECHO_MIN_DELAY && val <= AL_ECHO_MAX_DELAY))
+            throw effect_exception{AL_INVALID_VALUE, "Echo delay out of range"};
+        props->Echo.Delay = val;
+        break;
+
+    case AL_ECHO_LRDELAY:
+        if(!(val >= AL_ECHO_MIN_LRDELAY && val <= AL_ECHO_MAX_LRDELAY))
+            throw effect_exception{AL_INVALID_VALUE, "Echo LR delay out of range"};
+        props->Echo.LRDelay = val;
+        break;
+
+    case AL_ECHO_DAMPING:
+        if(!(val >= AL_ECHO_MIN_DAMPING && val <= AL_ECHO_MAX_DAMPING))
+            throw effect_exception{AL_INVALID_VALUE, "Echo damping out of range"};
+        props->Echo.Damping = val;
+        break;
+
+    case AL_ECHO_FEEDBACK:
+        if(!(val >= AL_ECHO_MIN_FEEDBACK && val <= AL_ECHO_MAX_FEEDBACK))
+            throw effect_exception{AL_INVALID_VALUE, "Echo feedback out of range"};
+        props->Echo.Feedback = val;
+        break;
+
+    case AL_ECHO_SPREAD:
+        if(!(val >= AL_ECHO_MIN_SPREAD && val <= AL_ECHO_MAX_SPREAD))
+            throw effect_exception{AL_INVALID_VALUE, "Echo spread out of range"};
+        props->Echo.Spread = val;
+        break;
+
+    default:
+        throw effect_exception{AL_INVALID_ENUM, "Invalid echo float property 0x%04x", param};
+    }
+}
+void Echo_setParamfv(EffectProps *props, ALenum param, const float *vals)
+{ Echo_setParamf(props, param, vals[0]); }
+
+void Echo_getParami(const EffectProps*, ALenum param, int*)
+{ throw effect_exception{AL_INVALID_ENUM, "Invalid echo integer property 0x%04x", param}; }
+void Echo_getParamiv(const EffectProps*, ALenum param, int*)
+{ throw effect_exception{AL_INVALID_ENUM, "Invalid echo integer-vector property 0x%04x", param}; }
+void Echo_getParamf(const EffectProps *props, ALenum param, float *val)
+{
+    switch(param)
+    {
+    case AL_ECHO_DELAY:
+        *val = props->Echo.Delay;
+        break;
+
+    case AL_ECHO_LRDELAY:
+        *val = props->Echo.LRDelay;
+        break;
+
+    case AL_ECHO_DAMPING:
+        *val = props->Echo.Damping;
+        break;
+
+    case AL_ECHO_FEEDBACK:
+        *val = props->Echo.Feedback;
+        break;
+
+    case AL_ECHO_SPREAD:
+        *val = props->Echo.Spread;
+        break;
+
+    default:
+        throw effect_exception{AL_INVALID_ENUM, "Invalid echo float property 0x%04x", param};
+    }
+}
+void Echo_getParamfv(const EffectProps *props, ALenum param, float *vals)
+{ Echo_getParamf(props, param, vals); }
+
+EffectProps genDefaultProps() noexcept
+{
+    EffectProps props{};
+    props.Echo.Delay    = AL_ECHO_DEFAULT_DELAY;
+    props.Echo.LRDelay  = AL_ECHO_DEFAULT_LRDELAY;
+    props.Echo.Damping  = AL_ECHO_DEFAULT_DAMPING;
+    props.Echo.Feedback = AL_ECHO_DEFAULT_FEEDBACK;
+    props.Echo.Spread   = AL_ECHO_DEFAULT_SPREAD;
+    return props;
+}
+
+} // namespace
+
+DEFINE_ALEFFECT_VTABLE(Echo);
+
+const EffectProps EchoEffectProps{genDefaultProps()};