From 11c63ca969f39481ccf75c204e21948f4fb41efa Mon Sep 17 00:00:00 2001
From: David <25727384+ogniK5377@users.noreply.github.com>
Date: Tue, 21 Apr 2020 12:57:30 +1000
Subject: audio_renderer: Preliminary BehaviorInfo (#3736)

* audio_renderer: Preliminary BehaviorInfo

* clang format

* Fixed IsRevisionSupported

* fixed IsValidRevision

* Fixed logic error & spelling errors & crash

* Addressed issues
---
 src/audio_core/common.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 src/audio_core/common.h

(limited to 'src/audio_core/common.h')

diff --git a/src/audio_core/common.h b/src/audio_core/common.h
new file mode 100644
index 000000000..98478b66b
--- /dev/null
+++ b/src/audio_core/common.h
@@ -0,0 +1,47 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "common/swap.h"
+#include "core/hle/result.h"
+
+namespace AudioCore {
+namespace Audren {
+constexpr ResultCode ERR_INVALID_PARAMETERS{ErrorModule::Audio, 41};
+}
+
+constexpr u32_le CURRENT_PROCESS_REVISION = Common::MakeMagic('R', 'E', 'V', '8');
+
+static constexpr u32 VersionFromRevision(u32_le rev) {
+    // "REV7" -> 7
+    return ((rev >> 24) & 0xff) - 0x30;
+}
+
+static constexpr bool IsRevisionSupported(u32 required, u32_le user_revision) {
+    const auto base = VersionFromRevision(user_revision);
+    return required <= base;
+}
+
+static constexpr bool IsValidRevision(u32_le revision) {
+    const auto base = VersionFromRevision(revision);
+    constexpr auto max_rev = VersionFromRevision(CURRENT_PROCESS_REVISION);
+    return base <= max_rev;
+}
+
+static constexpr bool CanConsumeBuffer(std::size_t size, std::size_t offset, std::size_t required) {
+    if (offset > size) {
+        return false;
+    }
+    if (size < required) {
+        return false;
+    }
+    if ((size - offset) < required) {
+        return false;
+    }
+    return true;
+}
+
+} // namespace AudioCore
-- 
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