update openal-soft

sync point: master-ac5d40e40a0155351fe1be4aab30017b6a13a859

Engine/lib/openal-soft/Alc/effects/null.cpp

@@ -0,0 +1,79 @@
+
+#include "config.h"
+
+#include "alcmain.h"
+#include "alcontext.h"
+#include "almalloc.h"
+#include "alspan.h"
+#include "effects/base.h"
+#include "effectslot.h"
+
+
+namespace {
+
+struct NullState final : public EffectState {
+    NullState();
+    ~NullState() override;
+
+    void deviceUpdate(const ALCdevice *device, const Buffer &buffer) override;
+    void update(const ALCcontext *context, const EffectSlot *slot, const EffectProps *props,
+        const EffectTarget target) override;
+    void process(const size_t samplesToDo, const al::span<const FloatBufferLine> samplesIn,
+        const al::span<FloatBufferLine> samplesOut) override;
+
+    DEF_NEWDEL(NullState)
+};
+
+/* This constructs the effect state. It's called when the object is first
+ * created.
+ */
+NullState::NullState() = default;
+
+/* This destructs the effect state. It's called only when the effect instance
+ * is no longer used.
+ */
+NullState::~NullState() = default;
+
+/* This updates the device-dependant effect state. This is called on state
+ * initialization and any time the device parameters (e.g. playback frequency,
+ * format) have been changed. Will always be followed by a call to the update
+ * method, if successful.
+ */
+void NullState::deviceUpdate(const ALCdevice* /*device*/, const Buffer& /*buffer*/)
+{
+}
+
+/* This updates the effect state with new properties. This is called any time
+ * the effect is (re)loaded into a slot.
+ */
+void NullState::update(const ALCcontext* /*context*/, const EffectSlot* /*slot*/,
+    const EffectProps* /*props*/, const EffectTarget /*target*/)
+{
+}
+
+/* This processes the effect state, for the given number of samples from the
+ * input to the output buffer. The result should be added to the output buffer,
+ * not replace it.
+ */
+void NullState::process(const size_t/*samplesToDo*/,
+    const al::span<const FloatBufferLine> /*samplesIn*/,
+    const al::span<FloatBufferLine> /*samplesOut*/)
+{
+}
+
+
+struct NullStateFactory final : public EffectStateFactory {
+    al::intrusive_ptr<EffectState> create() override;
+};
+
+/* Creates EffectState objects of the appropriate type. */
+al::intrusive_ptr<EffectState> NullStateFactory::create()
+{ return al::intrusive_ptr<EffectState>{new NullState{}}; }
+
+} // namespace
+
+EffectStateFactory *NullStateFactory_getFactory()
+{
+    static NullStateFactory NullFactory{};
+    return &NullFactory;
+}