From 0d713cf8eb8c8b8802584c73b83d5ca9d88c70b2 Mon Sep 17 00:00:00 2001
From: Lioncash <mathew1800@gmail.com>
Date: Thu, 29 Oct 2020 22:40:46 -0400
Subject: vp9: Mark functions with [[nodiscard]] where applicable

Prevents values from mistakenly being discarded in cases where it's a
bug to do so.
---
 src/video_core/command_classes/codecs/vp9.h | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

(limited to 'src/video_core/command_classes/codecs/vp9.h')

diff --git a/src/video_core/command_classes/codecs/vp9.h b/src/video_core/command_classes/codecs/vp9.h
index 94e8f9090..76b5a8283 100644
--- a/src/video_core/command_classes/codecs/vp9.h
+++ b/src/video_core/command_classes/codecs/vp9.h
@@ -37,11 +37,11 @@ public:
     /// Signal the end of the bitstream
     void End();
 
-    std::vector<u8>& GetBuffer() {
+    [[nodiscard]] std::vector<u8>& GetBuffer() {
         return base_stream.GetBuffer();
     }
 
-    const std::vector<u8>& GetBuffer() const {
+    [[nodiscard]] const std::vector<u8>& GetBuffer() const {
         return base_stream.GetBuffer();
     }
 
@@ -75,10 +75,10 @@ public:
     void Flush();
 
     /// Returns byte_array
-    std::vector<u8>& GetByteArray();
+    [[nodiscard]] std::vector<u8>& GetByteArray();
 
     /// Returns const byte_array
-    const std::vector<u8>& GetByteArray() const;
+    [[nodiscard]] const std::vector<u8>& GetByteArray() const;
 
 private:
     /// Write bit_count bits from value into buffer
@@ -104,7 +104,7 @@ public:
     std::vector<u8>& ComposeFrameHeader(NvdecCommon::NvdecRegisters& state);
 
     /// Returns true if the most recent frame was a hidden frame.
-    bool WasFrameHidden() const {
+    [[nodiscard]] bool WasFrameHidden() const {
         return hidden;
     }
 
@@ -141,17 +141,17 @@ private:
     void WriteMvProbabilityUpdate(VpxRangeEncoder& writer, u8 new_prob, u8 old_prob);
 
     /// Returns VP9 information from NVDEC provided offset and size
-    Vp9PictureInfo GetVp9PictureInfo(const NvdecCommon::NvdecRegisters& state);
+    [[nodiscard]] Vp9PictureInfo GetVp9PictureInfo(const NvdecCommon::NvdecRegisters& state);
 
     /// Read and convert NVDEC provided entropy probs to Vp9EntropyProbs struct
     void InsertEntropy(u64 offset, Vp9EntropyProbs& dst);
 
     /// Returns frame to be decoded after buffering
-    Vp9FrameContainer GetCurrentFrame(const NvdecCommon::NvdecRegisters& state);
+    [[nodiscard]] Vp9FrameContainer GetCurrentFrame(const NvdecCommon::NvdecRegisters& state);
 
     /// Use NVDEC providied information to compose the headers for the current frame
-    std::vector<u8> ComposeCompressedHeader();
-    VpxBitStreamWriter ComposeUncompressedHeader();
+    [[nodiscard]] std::vector<u8> ComposeCompressedHeader();
+    [[nodiscard]] VpxBitStreamWriter ComposeUncompressedHeader();
 
     GPU& gpu;
     std::vector<u8> frame;
-- 
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