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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.
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@ -200,7 +200,7 @@ constexpr std::array<s32, 254> map_lut{
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// 6.2.14 Tile size calculation
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s32 CalcMinLog2TileCols(s32 frame_width) {
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[[nodiscard]] s32 CalcMinLog2TileCols(s32 frame_width) {
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const s32 sb64_cols = (frame_width + 63) / 64;
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s32 min_log2 = 0;
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@ -211,7 +211,7 @@ s32 CalcMinLog2TileCols(s32 frame_width) {
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return min_log2;
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}
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s32 CalcMaxLog2TileCols(s32 frame_width) {
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[[nodiscard]] s32 CalcMaxLog2TileCols(s32 frame_width) {
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const s32 sb64_cols = (frame_width + 63) / 64;
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s32 max_log2 = 1;
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@ -223,7 +223,7 @@ s32 CalcMaxLog2TileCols(s32 frame_width) {
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}
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// Recenters probability. Based on section 6.3.6 of VP9 Specification
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s32 RecenterNonNeg(s32 new_prob, s32 old_prob) {
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[[nodiscard]] s32 RecenterNonNeg(s32 new_prob, s32 old_prob) {
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if (new_prob > old_prob * 2) {
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return new_prob;
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}
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@ -236,7 +236,7 @@ s32 RecenterNonNeg(s32 new_prob, s32 old_prob) {
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}
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// Adjusts old_prob depending on new_prob. Based on section 6.3.5 of VP9 Specification
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s32 RemapProbability(s32 new_prob, s32 old_prob) {
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[[nodiscard]] s32 RemapProbability(s32 new_prob, s32 old_prob) {
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new_prob--;
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old_prob--;
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@ -37,11 +37,11 @@ public:
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/// Signal the end of the bitstream
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void End();
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std::vector<u8>& GetBuffer() {
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[[nodiscard]] std::vector<u8>& GetBuffer() {
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return base_stream.GetBuffer();
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}
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const std::vector<u8>& GetBuffer() const {
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[[nodiscard]] const std::vector<u8>& GetBuffer() const {
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return base_stream.GetBuffer();
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}
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@ -75,10 +75,10 @@ public:
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void Flush();
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/// Returns byte_array
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std::vector<u8>& GetByteArray();
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[[nodiscard]] std::vector<u8>& GetByteArray();
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/// Returns const byte_array
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const std::vector<u8>& GetByteArray() const;
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[[nodiscard]] const std::vector<u8>& GetByteArray() const;
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private:
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/// Write bit_count bits from value into buffer
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@ -104,7 +104,7 @@ public:
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std::vector<u8>& ComposeFrameHeader(NvdecCommon::NvdecRegisters& state);
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/// Returns true if the most recent frame was a hidden frame.
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bool WasFrameHidden() const {
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[[nodiscard]] bool WasFrameHidden() const {
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return hidden;
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}
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@ -141,17 +141,17 @@ private:
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void WriteMvProbabilityUpdate(VpxRangeEncoder& writer, u8 new_prob, u8 old_prob);
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/// Returns VP9 information from NVDEC provided offset and size
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Vp9PictureInfo GetVp9PictureInfo(const NvdecCommon::NvdecRegisters& state);
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[[nodiscard]] Vp9PictureInfo GetVp9PictureInfo(const NvdecCommon::NvdecRegisters& state);
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/// Read and convert NVDEC provided entropy probs to Vp9EntropyProbs struct
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void InsertEntropy(u64 offset, Vp9EntropyProbs& dst);
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/// Returns frame to be decoded after buffering
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Vp9FrameContainer GetCurrentFrame(const NvdecCommon::NvdecRegisters& state);
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[[nodiscard]] Vp9FrameContainer GetCurrentFrame(const NvdecCommon::NvdecRegisters& state);
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/// Use NVDEC providied information to compose the headers for the current frame
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std::vector<u8> ComposeCompressedHeader();
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VpxBitStreamWriter ComposeUncompressedHeader();
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[[nodiscard]] std::vector<u8> ComposeCompressedHeader();
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[[nodiscard]] VpxBitStreamWriter ComposeUncompressedHeader();
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GPU& gpu;
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std::vector<u8> frame;
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