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vp9: Mark functions with [[nodiscard]] where applicable 

Prevents values from mistakenly being discarded in cases where it's a
bug to do so.
This commit is contained in:
Lioncash 2020-10-29 22:40:46 -04:00
parent badea3b301
commit 0d713cf8eb
2 changed files with 13 additions and 13 deletions
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8
src/video_core/command_classes/codecs/vp9.cpp
View File

@ -200,7 +200,7 @@ constexpr std::array<s32, 254> map_lut{
// 6.2.14 Tile size calculation // 6.2.14 Tile size calculation
s32 CalcMinLog2TileCols(s32 frame_width) { [[nodiscard]] s32 CalcMinLog2TileCols(s32 frame_width) {
const s32 sb64_cols = (frame_width + 63) / 64; const s32 sb64_cols = (frame_width + 63) / 64;
s32 min_log2 = 0; s32 min_log2 = 0;
@ -211,7 +211,7 @@ s32 CalcMinLog2TileCols(s32 frame_width) {
return min_log2; return min_log2;
} }
s32 CalcMaxLog2TileCols(s32 frame_width) { [[nodiscard]] s32 CalcMaxLog2TileCols(s32 frame_width) {
const s32 sb64_cols = (frame_width + 63) / 64; const s32 sb64_cols = (frame_width + 63) / 64;
s32 max_log2 = 1; s32 max_log2 = 1;
@ -223,7 +223,7 @@ s32 CalcMaxLog2TileCols(s32 frame_width) {
} }
// Recenters probability. Based on section 6.3.6 of VP9 Specification // Recenters probability. Based on section 6.3.6 of VP9 Specification
s32 RecenterNonNeg(s32 new_prob, s32 old_prob) { [[nodiscard]] s32 RecenterNonNeg(s32 new_prob, s32 old_prob) {
if (new_prob > old_prob * 2) { if (new_prob > old_prob * 2) {
return new_prob; return new_prob;
} }
@ -236,7 +236,7 @@ s32 RecenterNonNeg(s32 new_prob, s32 old_prob) {
} }
// Adjusts old_prob depending on new_prob. Based on section 6.3.5 of VP9 Specification // Adjusts old_prob depending on new_prob. Based on section 6.3.5 of VP9 Specification
s32 RemapProbability(s32 new_prob, s32 old_prob) { [[nodiscard]] s32 RemapProbability(s32 new_prob, s32 old_prob) {
new_prob--; new_prob--;
old_prob--; old_prob--;

18
src/video_core/command_classes/codecs/vp9.h
View File

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