commit
b87a71b3fe
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@ -25,16 +25,15 @@
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class BitStream {
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public:
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BitStream(unsigned char* ptr, int nBits = 0, int start_offset = 0)
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: m_BitsWritten(0), m_BitsRead(0), m_NumBits(nBits), m_CurByte(ptr),
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m_NextBit(start_offset % 8), done(false) {}
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explicit BitStream(unsigned char* ptr, int nBits = 0, int start_offset = 0)
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: m_NumBits(nBits), m_CurByte(ptr), m_NextBit(start_offset % 8) {}
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~BitStream() = default;
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int GetBitsWritten() const {
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return m_BitsWritten;
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}
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~BitStream() {}
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void WriteBitsR(unsigned int val, unsigned int nBits) {
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for (unsigned int i = 0; i < nBits; i++) {
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WriteBit((val >> (nBits - i - 1)) & 1);
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@ -95,33 +94,28 @@ private:
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done = done || ++m_BitsWritten >= m_NumBits;
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}
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int m_BitsWritten;
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int m_BitsWritten = 0;
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const int m_NumBits;
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unsigned char* m_CurByte;
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int m_NextBit;
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int m_BitsRead;
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int m_NextBit = 0;
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int m_BitsRead = 0;
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bool done;
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bool done = false;
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};
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template <typename IntType>
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class Bits {
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private:
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const IntType& m_Bits;
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// Don't copy
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Bits() {}
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Bits(const Bits&) {}
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Bits& operator=(const Bits&) {}
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public:
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explicit Bits(IntType& v) : m_Bits(v) {}
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explicit Bits(const IntType& v) : m_Bits(v) {}
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uint8_t operator[](uint32_t bitPos) {
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Bits(const Bits&) = delete;
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Bits& operator=(const Bits&) = delete;
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uint8_t operator[](uint32_t bitPos) const {
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return static_cast<uint8_t>((m_Bits >> bitPos) & 1);
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}
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IntType operator()(uint32_t start, uint32_t end) {
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IntType operator()(uint32_t start, uint32_t end) const {
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if (start == end) {
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return (*this)[start];
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} else if (start > end) {
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@ -133,6 +127,9 @@ public:
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uint64_t mask = (1 << (end - start + 1)) - 1;
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return (m_Bits >> start) & mask;
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}
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private:
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const IntType& m_Bits;
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};
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enum EIntegerEncoding { eIntegerEncoding_JustBits, eIntegerEncoding_Quint, eIntegerEncoding_Trit };
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@ -186,12 +183,12 @@ public:
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m_QuintValue = val;
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}
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bool MatchesEncoding(const IntegerEncodedValue& other) {
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bool MatchesEncoding(const IntegerEncodedValue& other) const {
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return m_Encoding == other.m_Encoding && m_NumBits == other.m_NumBits;
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}
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// Returns the number of bits required to encode nVals values.
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uint32_t GetBitLength(uint32_t nVals) {
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uint32_t GetBitLength(uint32_t nVals) const {
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uint32_t totalBits = m_NumBits * nVals;
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if (m_Encoding == eIntegerEncoding_Trit) {
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totalBits += (nVals * 8 + 4) / 5;
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@ -382,19 +379,15 @@ private:
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namespace ASTCC {
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struct TexelWeightParams {
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uint32_t m_Width;
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uint32_t m_Height;
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bool m_bDualPlane;
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uint32_t m_MaxWeight;
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bool m_bError;
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bool m_bVoidExtentLDR;
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bool m_bVoidExtentHDR;
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uint32_t m_Width = 0;
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uint32_t m_Height = 0;
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bool m_bDualPlane = false;
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uint32_t m_MaxWeight = 0;
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bool m_bError = false;
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bool m_bVoidExtentLDR = false;
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bool m_bVoidExtentHDR = false;
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TexelWeightParams() {
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memset(this, 0, sizeof(*this));
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}
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uint32_t GetPackedBitSize() {
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uint32_t GetPackedBitSize() const {
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// How many indices do we have?
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uint32_t nIdxs = m_Height * m_Width;
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if (m_bDualPlane) {
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@ -413,7 +406,7 @@ struct TexelWeightParams {
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}
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};
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TexelWeightParams DecodeBlockInfo(BitStream& strm) {
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static TexelWeightParams DecodeBlockInfo(BitStream& strm) {
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TexelWeightParams params;
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// Read the entire block mode all at once
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@ -612,8 +605,8 @@ TexelWeightParams DecodeBlockInfo(BitStream& strm) {
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return params;
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}
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void FillVoidExtentLDR(BitStream& strm, uint32_t* const outBuf, uint32_t blockWidth,
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uint32_t blockHeight) {
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static void FillVoidExtentLDR(BitStream& strm, uint32_t* const outBuf, uint32_t blockWidth,
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uint32_t blockHeight) {
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// Don't actually care about the void extent, just read the bits...
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for (int i = 0; i < 4; ++i) {
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strm.ReadBits(13);
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@ -628,23 +621,25 @@ void FillVoidExtentLDR(BitStream& strm, uint32_t* const outBuf, uint32_t blockWi
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uint32_t rgba = (r >> 8) | (g & 0xFF00) | (static_cast<uint32_t>(b) & 0xFF00) << 8 |
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(static_cast<uint32_t>(a) & 0xFF00) << 16;
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for (uint32_t j = 0; j < blockHeight; j++)
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for (uint32_t j = 0; j < blockHeight; j++) {
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for (uint32_t i = 0; i < blockWidth; i++) {
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outBuf[j * blockWidth + i] = rgba;
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}
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}
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}
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void FillError(uint32_t* outBuf, uint32_t blockWidth, uint32_t blockHeight) {
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for (uint32_t j = 0; j < blockHeight; j++)
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static void FillError(uint32_t* outBuf, uint32_t blockWidth, uint32_t blockHeight) {
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for (uint32_t j = 0; j < blockHeight; j++) {
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for (uint32_t i = 0; i < blockWidth; i++) {
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outBuf[j * blockWidth + i] = 0xFFFF00FF;
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}
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}
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}
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// Replicates low numBits such that [(toBit - 1):(toBit - 1 - fromBit)]
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// is the same as [(numBits - 1):0] and repeats all the way down.
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template <typename IntType>
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IntType Replicate(const IntType& val, uint32_t numBits, uint32_t toBit) {
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static IntType Replicate(const IntType& val, uint32_t numBits, uint32_t toBit) {
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if (numBits == 0)
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return 0;
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if (toBit == 0)
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@ -668,27 +663,15 @@ IntType Replicate(const IntType& val, uint32_t numBits, uint32_t toBit) {
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class Pixel {
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protected:
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typedef int16_t ChannelType;
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uint8_t m_BitDepth[4];
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int16_t color[4];
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using ChannelType = int16_t;
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uint8_t m_BitDepth[4] = {8, 8, 8, 8};
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int16_t color[4] = {};
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public:
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Pixel() {
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for (int i = 0; i < 4; i++) {
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m_BitDepth[i] = 8;
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color[i] = 0;
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}
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}
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Pixel(ChannelType a, ChannelType r, ChannelType g, ChannelType b, unsigned bitDepth = 8) {
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for (int i = 0; i < 4; i++)
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m_BitDepth[i] = bitDepth;
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color[0] = a;
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color[1] = r;
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color[2] = g;
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color[3] = b;
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}
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Pixel() = default;
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Pixel(ChannelType a, ChannelType r, ChannelType g, ChannelType b, unsigned bitDepth = 8)
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: m_BitDepth{uint8_t(bitDepth), uint8_t(bitDepth), uint8_t(bitDepth), uint8_t(bitDepth)},
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color{a, r, g, b} {}
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// Changes the depth of each pixel. This scales the values to
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// the appropriate bit depth by either truncating the least
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@ -807,8 +790,8 @@ public:
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}
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};
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void DecodeColorValues(uint32_t* out, uint8_t* data, uint32_t* modes, const uint32_t nPartitions,
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const uint32_t nBitsForColorData) {
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static void DecodeColorValues(uint32_t* out, uint8_t* data, const uint32_t* modes,
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const uint32_t nPartitions, const uint32_t nBitsForColorData) {
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// First figure out how many color values we have
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uint32_t nValues = 0;
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for (uint32_t i = 0; i < nPartitions; i++) {
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// Once we have the decoded values, we need to dequantize them to the 0-255 range
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// This procedure is outlined in ASTC spec C.2.13
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uint32_t outIdx = 0;
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std::vector<IntegerEncodedValue>::const_iterator itr;
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for (itr = decodedColorValues.begin(); itr != decodedColorValues.end(); itr++) {
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for (auto itr = decodedColorValues.begin(); itr != decodedColorValues.end(); ++itr) {
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// Have we already decoded all that we need?
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if (outIdx >= nValues) {
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break;
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@ -978,7 +960,7 @@ void DecodeColorValues(uint32_t* out, uint8_t* data, uint32_t* modes, const uint
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}
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}
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uint32_t UnquantizeTexelWeight(const IntegerEncodedValue& val) {
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static uint32_t UnquantizeTexelWeight(const IntegerEncodedValue& val) {
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uint32_t bitval = val.GetBitValue();
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uint32_t bitlen = val.BaseBitLength();
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@ -1067,17 +1049,18 @@ uint32_t UnquantizeTexelWeight(const IntegerEncodedValue& val) {
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return result;
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}
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void UnquantizeTexelWeights(uint32_t out[2][144], std::vector<IntegerEncodedValue>& weights,
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const TexelWeightParams& params, const uint32_t blockWidth,
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const uint32_t blockHeight) {
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static void UnquantizeTexelWeights(uint32_t out[2][144],
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const std::vector<IntegerEncodedValue>& weights,
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const TexelWeightParams& params, const uint32_t blockWidth,
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const uint32_t blockHeight) {
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uint32_t weightIdx = 0;
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uint32_t unquantized[2][144];
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std::vector<IntegerEncodedValue>::const_iterator itr;
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for (itr = weights.begin(); itr != weights.end(); itr++) {
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for (auto itr = weights.begin(); itr != weights.end(); ++itr) {
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unquantized[0][weightIdx] = UnquantizeTexelWeight(*itr);
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if (params.m_bDualPlane) {
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itr++;
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++itr;
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unquantized[1][weightIdx] = UnquantizeTexelWeight(*itr);
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if (itr == weights.end()) {
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break;
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@ -1261,8 +1244,8 @@ static inline uint32_t Select2DPartition(int32_t seed, int32_t x, int32_t y, int
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}
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// Section C.2.14
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void ComputeEndpoints(Pixel& ep1, Pixel& ep2, const uint32_t*& colorValues,
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uint32_t colorEndpointMode) {
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static void ComputeEndpoints(Pixel& ep1, Pixel& ep2, const uint32_t*& colorValues,
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uint32_t colorEndpointMode) {
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#define READ_UINT_VALUES(N) \
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uint32_t v[N]; \
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for (uint32_t i = 0; i < N; i++) { \
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@ -1382,8 +1365,8 @@ void ComputeEndpoints(Pixel& ep1, Pixel& ep2, const uint32_t*& colorValues,
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#undef READ_INT_VALUES
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}
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void DecompressBlock(uint8_t inBuf[16], const uint32_t blockWidth, const uint32_t blockHeight,
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uint32_t* outBuf) {
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static void DecompressBlock(uint8_t inBuf[16], const uint32_t blockWidth,
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const uint32_t blockHeight, uint32_t* outBuf) {
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BitStream strm(inBuf);
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TexelWeightParams weightParams = DecodeBlockInfo(strm);
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@ -1617,8 +1600,7 @@ namespace Tegra::Texture::ASTC {
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std::vector<uint8_t> Decompress(std::vector<uint8_t>& data, uint32_t width, uint32_t height,
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uint32_t block_width, uint32_t block_height) {
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uint32_t blockIdx = 0;
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std::vector<uint8_t> outData;
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outData.resize(height * width * 4);
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std::vector<uint8_t> outData(height * width * 4);
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for (uint32_t j = 0; j < height; j += block_height) {
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for (uint32_t i = 0; i < width; i += block_width) {
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Reference in New Issue