1 files changed, 56 insertions, 0 deletions

diff --git a/src/audio_core/renderer/command/mix/volume_ramp.h b/src/audio_core/renderer/command/mix/volume_ramp.h
new file mode 100644
index 000000000..77b61547e
--- /dev/null
+++ b/src/audio_core/renderer/command/mix/volume_ramp.h
@@ -0,0 +1,56 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <string>
+
+#include "audio_core/renderer/command/icommand.h"
+#include "common/common_types.h"
+
+namespace AudioCore::AudioRenderer {
+namespace ADSP {
+class CommandListProcessor;
+}
+
+/**
+ * AudioRenderer command for applying volume to a mix buffer, with ramping for the volume to smooth
+ * out the transition.
+ */
+struct VolumeRampCommand : ICommand {
+    /**
+     * Print this command's information to a string.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @param string    - The string to print into.
+     */
+    void Dump(const ADSP::CommandListProcessor& processor, std::string& string) override;
+
+    /**
+     * Process this command.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     */
+    void Process(const ADSP::CommandListProcessor& processor) override;
+
+    /**
+     * Verify this command's data is valid.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @return True if the command is valid, otherwise false.
+     */
+    bool Verify(const ADSP::CommandListProcessor& processor) override;
+
+    /// Fixed point precision
+    u8 precision;
+    /// Input mix buffer index
+    s16 input_index;
+    /// Output mix buffer index
+    s16 output_index;
+    /// Previous mix volume applied to the input
+    f32 prev_volume;
+    /// Current mix volume applied to the input
+    f32 volume;
+};
+
+} // namespace AudioCore::AudioRenderer