diff options
| author | volzhs <volzhs@gmail.com> | 2017-12-12 02:11:11 +0900 |
|---|---|---|
| committer | volzhs <volzhs@gmail.com> | 2017-12-12 02:55:47 +0900 |
| commit | 043103fe6a1168729abf74dd56b8982ce54eea43 (patch) | |
| tree | f3311c0442fba0ff565d9de0ad9fee3f0002295e /thirdparty/libwebp/utils | |
| parent | 64d104756c04f4d5c4e8140271d5e8049e5f8371 (diff) | |
Update libwebp to 0.6.1
* lossless performance and compression improvements + a new 'cruncher' mode (-m 6 -q 100)
* ARM performance improvements with clang (15-20% w/ndk r15c)
* webp-js: emscripten/webassembly based javascript decoder
* miscellaneous bug & build fixes
Diffstat (limited to 'thirdparty/libwebp/utils')
26 files changed, 0 insertions, 4003 deletions
diff --git a/thirdparty/libwebp/utils/bit_reader_inl_utils.h b/thirdparty/libwebp/utils/bit_reader_inl_utils.h deleted file mode 100644 index fd7fb0446c..0000000000 --- a/thirdparty/libwebp/utils/bit_reader_inl_utils.h +++ /dev/null @@ -1,190 +0,0 @@ -// Copyright 2014 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Specific inlined methods for boolean decoder [VP8GetBit() ...] -// This file should be included by the .c sources that actually need to call -// these methods. -// -// Author: Skal (pascal.massimino@gmail.com) - -#ifndef WEBP_UTILS_BIT_READER_INL_H_ -#define WEBP_UTILS_BIT_READER_INL_H_ - -#ifdef HAVE_CONFIG_H -#include "../webp/config.h" -#endif - -#include <string.h> // for memcpy - -#include "../dsp/dsp.h" -#include "./bit_reader_utils.h" -#include "./endian_inl_utils.h" -#include "./utils.h" - -#ifdef __cplusplus -extern "C" { -#endif - -//------------------------------------------------------------------------------ -// Derived type lbit_t = natural type for memory I/O - -#if (BITS > 32) -typedef uint64_t lbit_t; -#elif (BITS > 16) -typedef uint32_t lbit_t; -#elif (BITS > 8) -typedef uint16_t lbit_t; -#else -typedef uint8_t lbit_t; -#endif - -extern const uint8_t kVP8Log2Range[128]; -extern const uint8_t kVP8NewRange[128]; - -// special case for the tail byte-reading -void VP8LoadFinalBytes(VP8BitReader* const br); - -//------------------------------------------------------------------------------ -// Inlined critical functions - -// makes sure br->value_ has at least BITS bits worth of data -static WEBP_UBSAN_IGNORE_UNDEF WEBP_INLINE -void VP8LoadNewBytes(VP8BitReader* const br) { - assert(br != NULL && br->buf_ != NULL); - // Read 'BITS' bits at a time if possible. - if (br->buf_ < br->buf_max_) { - // convert memory type to register type (with some zero'ing!) - bit_t bits; -#if defined(WEBP_USE_MIPS32) - // This is needed because of un-aligned read. - lbit_t in_bits; - lbit_t* p_buf_ = (lbit_t*)br->buf_; - __asm__ volatile( - ".set push \n\t" - ".set at \n\t" - ".set macro \n\t" - "ulw %[in_bits], 0(%[p_buf_]) \n\t" - ".set pop \n\t" - : [in_bits]"=r"(in_bits) - : [p_buf_]"r"(p_buf_) - : "memory", "at" - ); -#else - lbit_t in_bits; - memcpy(&in_bits, br->buf_, sizeof(in_bits)); -#endif - br->buf_ += BITS >> 3; -#if !defined(WORDS_BIGENDIAN) -#if (BITS > 32) - bits = BSwap64(in_bits); - bits >>= 64 - BITS; -#elif (BITS >= 24) - bits = BSwap32(in_bits); - bits >>= (32 - BITS); -#elif (BITS == 16) - bits = BSwap16(in_bits); -#else // BITS == 8 - bits = (bit_t)in_bits; -#endif // BITS > 32 -#else // WORDS_BIGENDIAN - bits = (bit_t)in_bits; - if (BITS != 8 * sizeof(bit_t)) bits >>= (8 * sizeof(bit_t) - BITS); -#endif - br->value_ = bits | (br->value_ << BITS); - br->bits_ += BITS; - } else { - VP8LoadFinalBytes(br); // no need to be inlined - } -} - -// Read a bit with proba 'prob'. Speed-critical function! -static WEBP_INLINE int VP8GetBit(VP8BitReader* const br, int prob) { - // Don't move this declaration! It makes a big speed difference to store - // 'range' *before* calling VP8LoadNewBytes(), even if this function doesn't - // alter br->range_ value. - range_t range = br->range_; - if (br->bits_ < 0) { - VP8LoadNewBytes(br); - } - { - const int pos = br->bits_; - const range_t split = (range * prob) >> 8; - const range_t value = (range_t)(br->value_ >> pos); - const int bit = (value > split); - if (bit) { - range -= split; - br->value_ -= (bit_t)(split + 1) << pos; - } else { - range = split + 1; - } - { - const int shift = 7 ^ BitsLog2Floor(range); - range <<= shift; - br->bits_ -= shift; - } - br->range_ = range - 1; - return bit; - } -} - -// simplified version of VP8GetBit() for prob=0x80 (note shift is always 1 here) -static WEBP_UBSAN_IGNORE_UNSIGNED_OVERFLOW WEBP_INLINE -int VP8GetSigned(VP8BitReader* const br, int v) { - if (br->bits_ < 0) { - VP8LoadNewBytes(br); - } - { - const int pos = br->bits_; - const range_t split = br->range_ >> 1; - const range_t value = (range_t)(br->value_ >> pos); - const int32_t mask = (int32_t)(split - value) >> 31; // -1 or 0 - br->bits_ -= 1; - br->range_ += mask; - br->range_ |= 1; - br->value_ -= (bit_t)((split + 1) & mask) << pos; - return (v ^ mask) - mask; - } -} - -static WEBP_INLINE int VP8GetBitAlt(VP8BitReader* const br, int prob) { - // Don't move this declaration! It makes a big speed difference to store - // 'range' *before* calling VP8LoadNewBytes(), even if this function doesn't - // alter br->range_ value. - range_t range = br->range_; - if (br->bits_ < 0) { - VP8LoadNewBytes(br); - } - { - const int pos = br->bits_; - const range_t split = (range * prob) >> 8; - const range_t value = (range_t)(br->value_ >> pos); - int bit; // Don't use 'const int bit = (value > split);", it's slower. - if (value > split) { - range -= split + 1; - br->value_ -= (bit_t)(split + 1) << pos; - bit = 1; - } else { - range = split; - bit = 0; - } - if (range <= (range_t)0x7e) { - const int shift = kVP8Log2Range[range]; - range = kVP8NewRange[range]; - br->bits_ -= shift; - } - br->range_ = range; - return bit; - } -} - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif // WEBP_UTILS_BIT_READER_INL_H_ diff --git a/thirdparty/libwebp/utils/bit_reader_utils.c b/thirdparty/libwebp/utils/bit_reader_utils.c deleted file mode 100644 index 053b710bb8..0000000000 --- a/thirdparty/libwebp/utils/bit_reader_utils.c +++ /dev/null @@ -1,229 +0,0 @@ -// Copyright 2010 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Boolean decoder non-inlined methods -// -// Author: Skal (pascal.massimino@gmail.com) - -#ifdef HAVE_CONFIG_H -#include "../webp/config.h" -#endif - -#include "./bit_reader_inl_utils.h" -#include "../utils/utils.h" - -//------------------------------------------------------------------------------ -// VP8BitReader - -void VP8BitReaderSetBuffer(VP8BitReader* const br, - const uint8_t* const start, - size_t size) { - br->buf_ = start; - br->buf_end_ = start + size; - br->buf_max_ = - (size >= sizeof(lbit_t)) ? start + size - sizeof(lbit_t) + 1 - : start; -} - -void VP8InitBitReader(VP8BitReader* const br, - const uint8_t* const start, size_t size) { - assert(br != NULL); - assert(start != NULL); - assert(size < (1u << 31)); // limit ensured by format and upstream checks - br->range_ = 255 - 1; - br->value_ = 0; - br->bits_ = -8; // to load the very first 8bits - br->eof_ = 0; - VP8BitReaderSetBuffer(br, start, size); -// -- GODOT -- begin -#ifdef JAVASCRIPT_ENABLED // html5 required aligned reads - while(((uintptr_t)br->buf_ & 1) != 0 && !br->eof_) - VP8LoadFinalBytes(br); -#else - VP8LoadNewBytes(br); -#endif -// -- GODOT -- end -} - -void VP8RemapBitReader(VP8BitReader* const br, ptrdiff_t offset) { - if (br->buf_ != NULL) { - br->buf_ += offset; - br->buf_end_ += offset; - br->buf_max_ += offset; - } -} - -const uint8_t kVP8Log2Range[128] = { - 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, - 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 0 -}; - -// range = ((range - 1) << kVP8Log2Range[range]) + 1 -const uint8_t kVP8NewRange[128] = { - 127, 127, 191, 127, 159, 191, 223, 127, - 143, 159, 175, 191, 207, 223, 239, 127, - 135, 143, 151, 159, 167, 175, 183, 191, - 199, 207, 215, 223, 231, 239, 247, 127, - 131, 135, 139, 143, 147, 151, 155, 159, - 163, 167, 171, 175, 179, 183, 187, 191, - 195, 199, 203, 207, 211, 215, 219, 223, - 227, 231, 235, 239, 243, 247, 251, 127, - 129, 131, 133, 135, 137, 139, 141, 143, - 145, 147, 149, 151, 153, 155, 157, 159, - 161, 163, 165, 167, 169, 171, 173, 175, - 177, 179, 181, 183, 185, 187, 189, 191, - 193, 195, 197, 199, 201, 203, 205, 207, - 209, 211, 213, 215, 217, 219, 221, 223, - 225, 227, 229, 231, 233, 235, 237, 239, - 241, 243, 245, 247, 249, 251, 253, 127 -}; - -void VP8LoadFinalBytes(VP8BitReader* const br) { - assert(br != NULL && br->buf_ != NULL); - // Only read 8bits at a time - if (br->buf_ < br->buf_end_) { - br->bits_ += 8; - br->value_ = (bit_t)(*br->buf_++) | (br->value_ << 8); - } else if (!br->eof_) { - br->value_ <<= 8; - br->bits_ += 8; - br->eof_ = 1; - } else { - br->bits_ = 0; // This is to avoid undefined behaviour with shifts. - } -} - -//------------------------------------------------------------------------------ -// Higher-level calls - -uint32_t VP8GetValue(VP8BitReader* const br, int bits) { - uint32_t v = 0; - while (bits-- > 0) { - v |= VP8GetBit(br, 0x80) << bits; - } - return v; -} - -int32_t VP8GetSignedValue(VP8BitReader* const br, int bits) { - const int value = VP8GetValue(br, bits); - return VP8Get(br) ? -value : value; -} - -//------------------------------------------------------------------------------ -// VP8LBitReader - -#define VP8L_LOG8_WBITS 4 // Number of bytes needed to store VP8L_WBITS bits. - -#if defined(__arm__) || defined(_M_ARM) || defined(__aarch64__) || \ - defined(__i386__) || defined(_M_IX86) || \ - defined(__x86_64__) || defined(_M_X64) -#define VP8L_USE_FAST_LOAD -#endif - -static const uint32_t kBitMask[VP8L_MAX_NUM_BIT_READ + 1] = { - 0, - 0x000001, 0x000003, 0x000007, 0x00000f, - 0x00001f, 0x00003f, 0x00007f, 0x0000ff, - 0x0001ff, 0x0003ff, 0x0007ff, 0x000fff, - 0x001fff, 0x003fff, 0x007fff, 0x00ffff, - 0x01ffff, 0x03ffff, 0x07ffff, 0x0fffff, - 0x1fffff, 0x3fffff, 0x7fffff, 0xffffff -}; - -void VP8LInitBitReader(VP8LBitReader* const br, const uint8_t* const start, - size_t length) { - size_t i; - vp8l_val_t value = 0; - assert(br != NULL); - assert(start != NULL); - assert(length < 0xfffffff8u); // can't happen with a RIFF chunk. - - br->len_ = length; - br->val_ = 0; - br->bit_pos_ = 0; - br->eos_ = 0; - - if (length > sizeof(br->val_)) { - length = sizeof(br->val_); - } - for (i = 0; i < length; ++i) { - value |= (vp8l_val_t)start[i] << (8 * i); - } - br->val_ = value; - br->pos_ = length; - br->buf_ = start; -} - -void VP8LBitReaderSetBuffer(VP8LBitReader* const br, - const uint8_t* const buf, size_t len) { - assert(br != NULL); - assert(buf != NULL); - assert(len < 0xfffffff8u); // can't happen with a RIFF chunk. - br->buf_ = buf; - br->len_ = len; - // pos_ > len_ should be considered a param error. - br->eos_ = (br->pos_ > br->len_) || VP8LIsEndOfStream(br); -} - -static void VP8LSetEndOfStream(VP8LBitReader* const br) { - br->eos_ = 1; - br->bit_pos_ = 0; // To avoid undefined behaviour with shifts. -} - -// If not at EOS, reload up to VP8L_LBITS byte-by-byte -static void ShiftBytes(VP8LBitReader* const br) { - while (br->bit_pos_ >= 8 && br->pos_ < br->len_) { - br->val_ >>= 8; - br->val_ |= ((vp8l_val_t)br->buf_[br->pos_]) << (VP8L_LBITS - 8); - ++br->pos_; - br->bit_pos_ -= 8; - } - if (VP8LIsEndOfStream(br)) { - VP8LSetEndOfStream(br); - } -} - -void VP8LDoFillBitWindow(VP8LBitReader* const br) { - assert(br->bit_pos_ >= VP8L_WBITS); -#if defined(VP8L_USE_FAST_LOAD) - if (br->pos_ + sizeof(br->val_) < br->len_) { - br->val_ >>= VP8L_WBITS; - br->bit_pos_ -= VP8L_WBITS; - br->val_ |= (vp8l_val_t)HToLE32(WebPMemToUint32(br->buf_ + br->pos_)) << - (VP8L_LBITS - VP8L_WBITS); - br->pos_ += VP8L_LOG8_WBITS; - return; - } -#endif - ShiftBytes(br); // Slow path. -} - -uint32_t VP8LReadBits(VP8LBitReader* const br, int n_bits) { - assert(n_bits >= 0); - // Flag an error if end_of_stream or n_bits is more than allowed limit. - if (!br->eos_ && n_bits <= VP8L_MAX_NUM_BIT_READ) { - const uint32_t val = VP8LPrefetchBits(br) & kBitMask[n_bits]; - const int new_bits = br->bit_pos_ + n_bits; - br->bit_pos_ = new_bits; - ShiftBytes(br); - return val; - } else { - VP8LSetEndOfStream(br); - return 0; - } -} - -//------------------------------------------------------------------------------ diff --git a/thirdparty/libwebp/utils/bit_reader_utils.h b/thirdparty/libwebp/utils/bit_reader_utils.h deleted file mode 100644 index ea5c584eb4..0000000000 --- a/thirdparty/libwebp/utils/bit_reader_utils.h +++ /dev/null @@ -1,184 +0,0 @@ -// Copyright 2010 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Boolean decoder -// -// Author: Skal (pascal.massimino@gmail.com) -// Vikas Arora (vikaas.arora@gmail.com) - -#ifndef WEBP_UTILS_BIT_READER_H_ -#define WEBP_UTILS_BIT_READER_H_ - -#include <assert.h> -#ifdef _MSC_VER -#include <stdlib.h> // _byteswap_ulong -#endif -#include "../webp/types.h" - -#ifdef __cplusplus -extern "C" { -#endif - -// The Boolean decoder needs to maintain infinite precision on the value_ field. -// However, since range_ is only 8bit, we only need an active window of 8 bits -// for value_. Left bits (MSB) gets zeroed and shifted away when value_ falls -// below 128, range_ is updated, and fresh bits read from the bitstream are -// brought in as LSB. To avoid reading the fresh bits one by one (slow), we -// cache BITS of them ahead. The total of (BITS + 8) bits must fit into a -// natural register (with type bit_t). To fetch BITS bits from bitstream we -// use a type lbit_t. -// -// BITS can be any multiple of 8 from 8 to 56 (inclusive). -// Pick values that fit natural register size. - -// -- GODOT -- start -#ifdef JAVASCRIPT_ENABLED -#define BITS 16 -#else -// -- GODOT -- end - -#if defined(__i386__) || defined(_M_IX86) // x86 32bit -#define BITS 24 -#elif defined(__x86_64__) || defined(_M_X64) // x86 64bit -#define BITS 56 -#elif defined(__arm__) || defined(_M_ARM) // ARM -#define BITS 24 -#elif defined(__aarch64__) // ARM 64bit -#define BITS 56 -#elif defined(__mips__) // MIPS -#define BITS 24 -#else // reasonable default -#define BITS 24 -#endif - -// -- GODOT -- start -#endif -// -- GODOT -- end - -//------------------------------------------------------------------------------ -// Derived types and constants: -// bit_t = natural register type for storing 'value_' (which is BITS+8 bits) -// range_t = register for 'range_' (which is 8bits only) - -#if (BITS > 24) -typedef uint64_t bit_t; -#else -typedef uint32_t bit_t; -#endif - -typedef uint32_t range_t; - -//------------------------------------------------------------------------------ -// Bitreader - -typedef struct VP8BitReader VP8BitReader; -struct VP8BitReader { - // boolean decoder (keep the field ordering as is!) - bit_t value_; // current value - range_t range_; // current range minus 1. In [127, 254] interval. - int bits_; // number of valid bits left - // read buffer - const uint8_t* buf_; // next byte to be read - const uint8_t* buf_end_; // end of read buffer - const uint8_t* buf_max_; // max packed-read position on buffer - int eof_; // true if input is exhausted -}; - -// Initialize the bit reader and the boolean decoder. -void VP8InitBitReader(VP8BitReader* const br, - const uint8_t* const start, size_t size); -// Sets the working read buffer. -void VP8BitReaderSetBuffer(VP8BitReader* const br, - const uint8_t* const start, size_t size); - -// Update internal pointers to displace the byte buffer by the -// relative offset 'offset'. -void VP8RemapBitReader(VP8BitReader* const br, ptrdiff_t offset); - -// return the next value made of 'num_bits' bits -uint32_t VP8GetValue(VP8BitReader* const br, int num_bits); -static WEBP_INLINE uint32_t VP8Get(VP8BitReader* const br) { - return VP8GetValue(br, 1); -} - -// return the next value with sign-extension. -int32_t VP8GetSignedValue(VP8BitReader* const br, int num_bits); - -// bit_reader_inl.h will implement the following methods: -// static WEBP_INLINE int VP8GetBit(VP8BitReader* const br, int prob) -// static WEBP_INLINE int VP8GetSigned(VP8BitReader* const br, int v) -// and should be included by the .c files that actually need them. -// This is to avoid recompiling the whole library whenever this file is touched, -// and also allowing platform-specific ad-hoc hacks. - -// ----------------------------------------------------------------------------- -// Bitreader for lossless format - -// maximum number of bits (inclusive) the bit-reader can handle: -#define VP8L_MAX_NUM_BIT_READ 24 - -#define VP8L_LBITS 64 // Number of bits prefetched (= bit-size of vp8l_val_t). -#define VP8L_WBITS 32 // Minimum number of bytes ready after VP8LFillBitWindow. - -typedef uint64_t vp8l_val_t; // right now, this bit-reader can only use 64bit. - -typedef struct { - vp8l_val_t val_; // pre-fetched bits - const uint8_t* buf_; // input byte buffer - size_t len_; // buffer length - size_t pos_; // byte position in buf_ - int bit_pos_; // current bit-reading position in val_ - int eos_; // true if a bit was read past the end of buffer -} VP8LBitReader; - -void VP8LInitBitReader(VP8LBitReader* const br, - const uint8_t* const start, - size_t length); - -// Sets a new data buffer. -void VP8LBitReaderSetBuffer(VP8LBitReader* const br, - const uint8_t* const buffer, size_t length); - -// Reads the specified number of bits from read buffer. -// Flags an error in case end_of_stream or n_bits is more than the allowed limit -// of VP8L_MAX_NUM_BIT_READ (inclusive). -// Flags eos_ if this read attempt is going to cross the read buffer. -uint32_t VP8LReadBits(VP8LBitReader* const br, int n_bits); - -// Return the prefetched bits, so they can be looked up. -static WEBP_INLINE uint32_t VP8LPrefetchBits(VP8LBitReader* const br) { - return (uint32_t)(br->val_ >> (br->bit_pos_ & (VP8L_LBITS - 1))); -} - -// Returns true if there was an attempt at reading bit past the end of -// the buffer. Doesn't set br->eos_ flag. -static WEBP_INLINE int VP8LIsEndOfStream(const VP8LBitReader* const br) { - assert(br->pos_ <= br->len_); - return br->eos_ || ((br->pos_ == br->len_) && (br->bit_pos_ > VP8L_LBITS)); -} - -// For jumping over a number of bits in the bit stream when accessed with -// VP8LPrefetchBits and VP8LFillBitWindow. -static WEBP_INLINE void VP8LSetBitPos(VP8LBitReader* const br, int val) { - br->bit_pos_ = val; - br->eos_ = VP8LIsEndOfStream(br); -} - -// Advances the read buffer by 4 bytes to make room for reading next 32 bits. -// Speed critical, but infrequent part of the code can be non-inlined. -extern void VP8LDoFillBitWindow(VP8LBitReader* const br); -static WEBP_INLINE void VP8LFillBitWindow(VP8LBitReader* const br) { - if (br->bit_pos_ >= VP8L_WBITS) VP8LDoFillBitWindow(br); -} - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif /* WEBP_UTILS_BIT_READER_H_ */ diff --git a/thirdparty/libwebp/utils/bit_writer_utils.c b/thirdparty/libwebp/utils/bit_writer_utils.c deleted file mode 100644 index ab0c49dce8..0000000000 --- a/thirdparty/libwebp/utils/bit_writer_utils.c +++ /dev/null @@ -1,319 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Bit writing and boolean coder -// -// Author: Skal (pascal.massimino@gmail.com) -// Vikas Arora (vikaas.arora@gmail.com) - -#include <assert.h> -#include <string.h> // for memcpy() -#include <stdlib.h> - -#include "./bit_writer_utils.h" -#include "./endian_inl_utils.h" -#include "./utils.h" - -//------------------------------------------------------------------------------ -// VP8BitWriter - -static int BitWriterResize(VP8BitWriter* const bw, size_t extra_size) { - uint8_t* new_buf; - size_t new_size; - const uint64_t needed_size_64b = (uint64_t)bw->pos_ + extra_size; - const size_t needed_size = (size_t)needed_size_64b; - if (needed_size_64b != needed_size) { - bw->error_ = 1; - return 0; - } - if (needed_size <= bw->max_pos_) return 1; - // If the following line wraps over 32bit, the test just after will catch it. - new_size = 2 * bw->max_pos_; - if (new_size < needed_size) new_size = needed_size; - if (new_size < 1024) new_size = 1024; - new_buf = (uint8_t*)WebPSafeMalloc(1ULL, new_size); - if (new_buf == NULL) { - bw->error_ = 1; - return 0; - } - if (bw->pos_ > 0) { - assert(bw->buf_ != NULL); - memcpy(new_buf, bw->buf_, bw->pos_); - } - WebPSafeFree(bw->buf_); - bw->buf_ = new_buf; - bw->max_pos_ = new_size; - return 1; -} - -static void Flush(VP8BitWriter* const bw) { - const int s = 8 + bw->nb_bits_; - const int32_t bits = bw->value_ >> s; - assert(bw->nb_bits_ >= 0); - bw->value_ -= bits << s; - bw->nb_bits_ -= 8; - if ((bits & 0xff) != 0xff) { - size_t pos = bw->pos_; - if (!BitWriterResize(bw, bw->run_ + 1)) { - return; - } - if (bits & 0x100) { // overflow -> propagate carry over pending 0xff's - if (pos > 0) bw->buf_[pos - 1]++; - } - if (bw->run_ > 0) { - const int value = (bits & 0x100) ? 0x00 : 0xff; - for (; bw->run_ > 0; --bw->run_) bw->buf_[pos++] = value; - } - bw->buf_[pos++] = bits; - bw->pos_ = pos; - } else { - bw->run_++; // delay writing of bytes 0xff, pending eventual carry. - } -} - -//------------------------------------------------------------------------------ -// renormalization - -static const uint8_t kNorm[128] = { // renorm_sizes[i] = 8 - log2(i) - 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, - 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 0 -}; - -// range = ((range + 1) << kVP8Log2Range[range]) - 1 -static const uint8_t kNewRange[128] = { - 127, 127, 191, 127, 159, 191, 223, 127, 143, 159, 175, 191, 207, 223, 239, - 127, 135, 143, 151, 159, 167, 175, 183, 191, 199, 207, 215, 223, 231, 239, - 247, 127, 131, 135, 139, 143, 147, 151, 155, 159, 163, 167, 171, 175, 179, - 183, 187, 191, 195, 199, 203, 207, 211, 215, 219, 223, 227, 231, 235, 239, - 243, 247, 251, 127, 129, 131, 133, 135, 137, 139, 141, 143, 145, 147, 149, - 151, 153, 155, 157, 159, 161, 163, 165, 167, 169, 171, 173, 175, 177, 179, - 181, 183, 185, 187, 189, 191, 193, 195, 197, 199, 201, 203, 205, 207, 209, - 211, 213, 215, 217, 219, 221, 223, 225, 227, 229, 231, 233, 235, 237, 239, - 241, 243, 245, 247, 249, 251, 253, 127 -}; - -int VP8PutBit(VP8BitWriter* const bw, int bit, int prob) { - const int split = (bw->range_ * prob) >> 8; - if (bit) { - bw->value_ += split + 1; - bw->range_ -= split + 1; - } else { - bw->range_ = split; - } - if (bw->range_ < 127) { // emit 'shift' bits out and renormalize - const int shift = kNorm[bw->range_]; - bw->range_ = kNewRange[bw->range_]; - bw->value_ <<= shift; - bw->nb_bits_ += shift; - if (bw->nb_bits_ > 0) Flush(bw); - } - return bit; -} - -int VP8PutBitUniform(VP8BitWriter* const bw, int bit) { - const int split = bw->range_ >> 1; - if (bit) { - bw->value_ += split + 1; - bw->range_ -= split + 1; - } else { - bw->range_ = split; - } - if (bw->range_ < 127) { - bw->range_ = kNewRange[bw->range_]; - bw->value_ <<= 1; - bw->nb_bits_ += 1; - if (bw->nb_bits_ > 0) Flush(bw); - } - return bit; -} - -void VP8PutBits(VP8BitWriter* const bw, uint32_t value, int nb_bits) { - uint32_t mask; - assert(nb_bits > 0 && nb_bits < 32); - for (mask = 1u << (nb_bits - 1); mask; mask >>= 1) { - VP8PutBitUniform(bw, value & mask); - } -} - -void VP8PutSignedBits(VP8BitWriter* const bw, int value, int nb_bits) { - if (!VP8PutBitUniform(bw, value != 0)) return; - if (value < 0) { - VP8PutBits(bw, ((-value) << 1) | 1, nb_bits + 1); - } else { - VP8PutBits(bw, value << 1, nb_bits + 1); - } -} - -//------------------------------------------------------------------------------ - -int VP8BitWriterInit(VP8BitWriter* const bw, size_t expected_size) { - bw->range_ = 255 - 1; - bw->value_ = 0; - bw->run_ = 0; - bw->nb_bits_ = -8; - bw->pos_ = 0; - bw->max_pos_ = 0; - bw->error_ = 0; - bw->buf_ = NULL; - return (expected_size > 0) ? BitWriterResize(bw, expected_size) : 1; -} - -uint8_t* VP8BitWriterFinish(VP8BitWriter* const bw) { - VP8PutBits(bw, 0, 9 - bw->nb_bits_); - bw->nb_bits_ = 0; // pad with zeroes - Flush(bw); - return bw->buf_; -} - -int VP8BitWriterAppend(VP8BitWriter* const bw, - const uint8_t* data, size_t size) { - assert(data != NULL); - if (bw->nb_bits_ != -8) return 0; // Flush() must have been called - if (!BitWriterResize(bw, size)) return 0; - memcpy(bw->buf_ + bw->pos_, data, size); - bw->pos_ += size; - return 1; -} - -void VP8BitWriterWipeOut(VP8BitWriter* const bw) { - if (bw != NULL) { - WebPSafeFree(bw->buf_); - memset(bw, 0, sizeof(*bw)); - } -} - -//------------------------------------------------------------------------------ -// VP8LBitWriter - -// This is the minimum amount of size the memory buffer is guaranteed to grow -// when extra space is needed. -#define MIN_EXTRA_SIZE (32768ULL) - -// Returns 1 on success. -static int VP8LBitWriterResize(VP8LBitWriter* const bw, size_t extra_size) { - uint8_t* allocated_buf; - size_t allocated_size; - const size_t max_bytes = bw->end_ - bw->buf_; - const size_t current_size = bw->cur_ - bw->buf_; - const uint64_t size_required_64b = (uint64_t)current_size + extra_size; - const size_t size_required = (size_t)size_required_64b; - if (size_required != size_required_64b) { - bw->error_ = 1; - return 0; - } - if (max_bytes > 0 && size_required <= max_bytes) return 1; - allocated_size = (3 * max_bytes) >> 1; - if (allocated_size < size_required) allocated_size = size_required; - // make allocated size multiple of 1k - allocated_size = (((allocated_size >> 10) + 1) << 10); - allocated_buf = (uint8_t*)WebPSafeMalloc(1ULL, allocated_size); - if (allocated_buf == NULL) { - bw->error_ = 1; - return 0; - } - if (current_size > 0) { - memcpy(allocated_buf, bw->buf_, current_size); - } - WebPSafeFree(bw->buf_); - bw->buf_ = allocated_buf; - bw->cur_ = bw->buf_ + current_size; - bw->end_ = bw->buf_ + allocated_size; - return 1; -} - -int VP8LBitWriterInit(VP8LBitWriter* const bw, size_t expected_size) { - memset(bw, 0, sizeof(*bw)); - return VP8LBitWriterResize(bw, expected_size); -} - -void VP8LBitWriterWipeOut(VP8LBitWriter* const bw) { - if (bw != NULL) { - WebPSafeFree(bw->buf_); - memset(bw, 0, sizeof(*bw)); - } -} - -void VP8LPutBitsFlushBits(VP8LBitWriter* const bw) { - // If needed, make some room by flushing some bits out. - if (bw->cur_ + VP8L_WRITER_BYTES > bw->end_) { - const uint64_t extra_size = (bw->end_ - bw->buf_) + MIN_EXTRA_SIZE; - if (extra_size != (size_t)extra_size || - !VP8LBitWriterResize(bw, (size_t)extra_size)) { - bw->cur_ = bw->buf_; - bw->error_ = 1; - return; - } - } - *(vp8l_wtype_t*)bw->cur_ = (vp8l_wtype_t)WSWAP((vp8l_wtype_t)bw->bits_); - bw->cur_ += VP8L_WRITER_BYTES; - bw->bits_ >>= VP8L_WRITER_BITS; - bw->used_ -= VP8L_WRITER_BITS; -} - -void VP8LPutBitsInternal(VP8LBitWriter* const bw, uint32_t bits, int n_bits) { - assert(n_bits <= 32); - // That's the max we can handle: - assert(sizeof(vp8l_wtype_t) == 2); - if (n_bits > 0) { - vp8l_atype_t lbits = bw->bits_; - int used = bw->used_; - // Special case of overflow handling for 32bit accumulator (2-steps flush). -#if VP8L_WRITER_BITS == 16 - if (used + n_bits >= VP8L_WRITER_MAX_BITS) { - // Fill up all the VP8L_WRITER_MAX_BITS so it can be flushed out below. - const int shift = VP8L_WRITER_MAX_BITS - used; - lbits |= (vp8l_atype_t)bits << used; - used = VP8L_WRITER_MAX_BITS; - n_bits -= shift; - bits >>= shift; - assert(n_bits <= VP8L_WRITER_MAX_BITS); - } -#endif - // If needed, make some room by flushing some bits out. - while (used >= VP8L_WRITER_BITS) { - if (bw->cur_ + VP8L_WRITER_BYTES > bw->end_) { - const uint64_t extra_size = (bw->end_ - bw->buf_) + MIN_EXTRA_SIZE; - if (extra_size != (size_t)extra_size || - !VP8LBitWriterResize(bw, (size_t)extra_size)) { - bw->cur_ = bw->buf_; - bw->error_ = 1; - return; - } - } - *(vp8l_wtype_t*)bw->cur_ = (vp8l_wtype_t)WSWAP((vp8l_wtype_t)lbits); - bw->cur_ += VP8L_WRITER_BYTES; - lbits >>= VP8L_WRITER_BITS; - used -= VP8L_WRITER_BITS; - } - bw->bits_ = lbits | ((vp8l_atype_t)bits << used); - bw->used_ = used + n_bits; - } -} - -uint8_t* VP8LBitWriterFinish(VP8LBitWriter* const bw) { - // flush leftover bits - if (VP8LBitWriterResize(bw, (bw->used_ + 7) >> 3)) { - while (bw->used_ > 0) { - *bw->cur_++ = (uint8_t)bw->bits_; - bw->bits_ >>= 8; - bw->used_ -= 8; - } - bw->used_ = 0; - } - return bw->buf_; -} - -//------------------------------------------------------------------------------ diff --git a/thirdparty/libwebp/utils/bit_writer_utils.h b/thirdparty/libwebp/utils/bit_writer_utils.h deleted file mode 100644 index 9c02bbc06d..0000000000 --- a/thirdparty/libwebp/utils/bit_writer_utils.h +++ /dev/null @@ -1,146 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Bit writing and boolean coder -// -// Author: Skal (pascal.massimino@gmail.com) - -#ifndef WEBP_UTILS_BIT_WRITER_H_ -#define WEBP_UTILS_BIT_WRITER_H_ - -#include "../webp/types.h" - -#ifdef __cplusplus -extern "C" { -#endif - -//------------------------------------------------------------------------------ -// Bit-writing - -typedef struct VP8BitWriter VP8BitWriter; -struct VP8BitWriter { - int32_t range_; // range-1 - int32_t value_; - int run_; // number of outstanding bits - int nb_bits_; // number of pending bits - uint8_t* buf_; // internal buffer. Re-allocated regularly. Not owned. - size_t pos_; - size_t max_pos_; - int error_; // true in case of error -}; - -// Initialize the object. Allocates some initial memory based on expected_size. -int VP8BitWriterInit(VP8BitWriter* const bw, size_t expected_size); -// Finalize the bitstream coding. Returns a pointer to the internal buffer. -uint8_t* VP8BitWriterFinish(VP8BitWriter* const bw); -// Release any pending memory and zeroes the object. Not a mandatory call. -// Only useful in case of error, when the internal buffer hasn't been grabbed! -void VP8BitWriterWipeOut(VP8BitWriter* const bw); - -int VP8PutBit(VP8BitWriter* const bw, int bit, int prob); -int VP8PutBitUniform(VP8BitWriter* const bw, int bit); -void VP8PutBits(VP8BitWriter* const bw, uint32_t value, int nb_bits); -void VP8PutSignedBits(VP8BitWriter* const bw, int value, int nb_bits); - -// Appends some bytes to the internal buffer. Data is copied. -int VP8BitWriterAppend(VP8BitWriter* const bw, - const uint8_t* data, size_t size); - -// return approximate write position (in bits) -static WEBP_INLINE uint64_t VP8BitWriterPos(const VP8BitWriter* const bw) { - const uint64_t nb_bits = 8 + bw->nb_bits_; // bw->nb_bits_ is <= 0, note - return (bw->pos_ + bw->run_) * 8 + nb_bits; -} - -// Returns a pointer to the internal buffer. -static WEBP_INLINE uint8_t* VP8BitWriterBuf(const VP8BitWriter* const bw) { - return bw->buf_; -} -// Returns the size of the internal buffer. -static WEBP_INLINE size_t VP8BitWriterSize(const VP8BitWriter* const bw) { - return bw->pos_; -} - -//------------------------------------------------------------------------------ -// VP8LBitWriter - -#if defined(__x86_64__) || defined(_M_X64) // 64bit -typedef uint64_t vp8l_atype_t; // accumulator type -typedef uint32_t vp8l_wtype_t; // writing type -#define WSWAP HToLE32 -#define VP8L_WRITER_BYTES 4 // sizeof(vp8l_wtype_t) -#define VP8L_WRITER_BITS 32 // 8 * sizeof(vp8l_wtype_t) -#define VP8L_WRITER_MAX_BITS 64 // 8 * sizeof(vp8l_atype_t) -#else -typedef uint32_t vp8l_atype_t; -typedef uint16_t vp8l_wtype_t; -#define WSWAP HToLE16 -#define VP8L_WRITER_BYTES 2 -#define VP8L_WRITER_BITS 16 -#define VP8L_WRITER_MAX_BITS 32 -#endif - -typedef struct { - vp8l_atype_t bits_; // bit accumulator - int used_; // number of bits used in accumulator - uint8_t* buf_; // start of buffer - uint8_t* cur_; // current write position - uint8_t* end_; // end of buffer - - // After all bits are written (VP8LBitWriterFinish()), the caller must observe - // the state of error_. A value of 1 indicates that a memory allocation - // failure has happened during bit writing. A value of 0 indicates successful - // writing of bits. - int error_; -} VP8LBitWriter; - -static WEBP_INLINE size_t VP8LBitWriterNumBytes(VP8LBitWriter* const bw) { - return (bw->cur_ - bw->buf_) + ((bw->used_ + 7) >> 3); -} - -// Returns false in case of memory allocation error. -int VP8LBitWriterInit(VP8LBitWriter* const bw, size_t expected_size); -// Finalize the bitstream coding. Returns a pointer to the internal buffer. -uint8_t* VP8LBitWriterFinish(VP8LBitWriter* const bw); -// Release any pending memory and zeroes the object. -void VP8LBitWriterWipeOut(VP8LBitWriter* const bw); - -// Internal function for VP8LPutBits flushing 32 bits from the written state. -void VP8LPutBitsFlushBits(VP8LBitWriter* const bw); - -// PutBits internal function used in the 16 bit vp8l_wtype_t case. -void VP8LPutBitsInternal(VP8LBitWriter* const bw, uint32_t bits, int n_bits); - -// This function writes bits into bytes in increasing addresses (little endian), -// and within a byte least-significant-bit first. -// This function can write up to 32 bits in one go, but VP8LBitReader can only -// read 24 bits max (VP8L_MAX_NUM_BIT_READ). -// VP8LBitWriter's error_ flag is set in case of memory allocation error. -static WEBP_INLINE void VP8LPutBits(VP8LBitWriter* const bw, - uint32_t bits, int n_bits) { - if (sizeof(vp8l_wtype_t) == 4) { - if (n_bits > 0) { - if (bw->used_ >= 32) { - VP8LPutBitsFlushBits(bw); - } - bw->bits_ |= (vp8l_atype_t)bits << bw->used_; - bw->used_ += n_bits; - } - } else { - VP8LPutBitsInternal(bw, bits, n_bits); - } -} - -//------------------------------------------------------------------------------ - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif /* WEBP_UTILS_BIT_WRITER_H_ */ diff --git a/thirdparty/libwebp/utils/color_cache_utils.c b/thirdparty/libwebp/utils/color_cache_utils.c deleted file mode 100644 index 0172590c48..0000000000 --- a/thirdparty/libwebp/utils/color_cache_utils.c +++ /dev/null @@ -1,49 +0,0 @@ -// Copyright 2012 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Color Cache for WebP Lossless -// -// Author: Jyrki Alakuijala (jyrki@google.com) - -#include <assert.h> -#include <stdlib.h> -#include <string.h> -#include "./color_cache_utils.h" -#include "./utils.h" - -//------------------------------------------------------------------------------ -// VP8LColorCache. - -int VP8LColorCacheInit(VP8LColorCache* const cc, int hash_bits) { - const int hash_size = 1 << hash_bits; - assert(cc != NULL); - assert(hash_bits > 0); - cc->colors_ = (uint32_t*)WebPSafeCalloc((uint64_t)hash_size, - sizeof(*cc->colors_)); - if (cc->colors_ == NULL) return 0; - cc->hash_shift_ = 32 - hash_bits; - cc->hash_bits_ = hash_bits; - return 1; -} - -void VP8LColorCacheClear(VP8LColorCache* const cc) { - if (cc != NULL) { - WebPSafeFree(cc->colors_); - cc->colors_ = NULL; - } -} - -void VP8LColorCacheCopy(const VP8LColorCache* const src, - VP8LColorCache* const dst) { - assert(src != NULL); - assert(dst != NULL); - assert(src->hash_bits_ == dst->hash_bits_); - memcpy(dst->colors_, src->colors_, - ((size_t)1u << dst->hash_bits_) * sizeof(*dst->colors_)); -} diff --git a/thirdparty/libwebp/utils/color_cache_utils.h b/thirdparty/libwebp/utils/color_cache_utils.h deleted file mode 100644 index c373e6b361..0000000000 --- a/thirdparty/libwebp/utils/color_cache_utils.h +++ /dev/null @@ -1,85 +0,0 @@ -// Copyright 2012 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Color Cache for WebP Lossless -// -// Authors: Jyrki Alakuijala (jyrki@google.com) -// Urvang Joshi (urvang@google.com) - -#ifndef WEBP_UTILS_COLOR_CACHE_H_ -#define WEBP_UTILS_COLOR_CACHE_H_ - -#include "../webp/types.h" - -#ifdef __cplusplus -extern "C" { -#endif - -// Main color cache struct. -typedef struct { - uint32_t *colors_; // color entries - int hash_shift_; // Hash shift: 32 - hash_bits_. - int hash_bits_; -} VP8LColorCache; - -static const uint64_t kHashMul = 0x1e35a7bdull; - -static WEBP_INLINE int HashPix(uint32_t argb, int shift) { - return (int)(((argb * kHashMul) & 0xffffffffu) >> shift); -} - -static WEBP_INLINE uint32_t VP8LColorCacheLookup( - const VP8LColorCache* const cc, uint32_t key) { - assert((key >> cc->hash_bits_) == 0u); - return cc->colors_[key]; -} - -static WEBP_INLINE void VP8LColorCacheSet(const VP8LColorCache* const cc, - uint32_t key, uint32_t argb) { - assert((key >> cc->hash_bits_) == 0u); - cc->colors_[key] = argb; -} - -static WEBP_INLINE void VP8LColorCacheInsert(const VP8LColorCache* const cc, - uint32_t argb) { - const int key = HashPix(argb, cc->hash_shift_); - cc->colors_[key] = argb; -} - -static WEBP_INLINE int VP8LColorCacheGetIndex(const VP8LColorCache* const cc, - uint32_t argb) { - return HashPix(argb, cc->hash_shift_); -} - -// Return the key if cc contains argb, and -1 otherwise. -static WEBP_INLINE int VP8LColorCacheContains(const VP8LColorCache* const cc, - uint32_t argb) { - const int key = HashPix(argb, cc->hash_shift_); - return (cc->colors_[key] == argb) ? key : -1; -} - -//------------------------------------------------------------------------------ - -// Initializes the color cache with 'hash_bits' bits for the keys. -// Returns false in case of memory error. -int VP8LColorCacheInit(VP8LColorCache* const color_cache, int hash_bits); - -void VP8LColorCacheCopy(const VP8LColorCache* const src, - VP8LColorCache* const dst); - -// Delete the memory associated to color cache. -void VP8LColorCacheClear(VP8LColorCache* const color_cache); - -//------------------------------------------------------------------------------ - -#ifdef __cplusplus -} -#endif - -#endif // WEBP_UTILS_COLOR_CACHE_H_ diff --git a/thirdparty/libwebp/utils/endian_inl_utils.h b/thirdparty/libwebp/utils/endian_inl_utils.h deleted file mode 100644 index e11260ff7d..0000000000 --- a/thirdparty/libwebp/utils/endian_inl_utils.h +++ /dev/null @@ -1,100 +0,0 @@ -// Copyright 2014 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Endian related functions. - -#ifndef WEBP_UTILS_ENDIAN_INL_H_ -#define WEBP_UTILS_ENDIAN_INL_H_ - -#ifdef HAVE_CONFIG_H -#include "../webp/config.h" -#endif - -#include "../dsp/dsp.h" -#include "../webp/types.h" - -// some endian fix (e.g.: mips-gcc doesn't define __BIG_ENDIAN__) -#if !defined(WORDS_BIGENDIAN) && \ - (defined(__BIG_ENDIAN__) || defined(_M_PPC) || \ - (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))) -#define WORDS_BIGENDIAN -#endif - -#if defined(WORDS_BIGENDIAN) -#define HToLE32 BSwap32 -#define HToLE16 BSwap16 -#else -#define HToLE32(x) (x) -#define HToLE16(x) (x) -#endif - -#if !defined(HAVE_CONFIG_H) -#if LOCAL_GCC_PREREQ(4,8) || __has_builtin(__builtin_bswap16) -#define HAVE_BUILTIN_BSWAP16 -#endif -#if LOCAL_GCC_PREREQ(4,3) || __has_builtin(__builtin_bswap32) -#define HAVE_BUILTIN_BSWAP32 -#endif -#if LOCAL_GCC_PREREQ(4,3) || __has_builtin(__builtin_bswap64) -#define HAVE_BUILTIN_BSWAP64 -#endif -#endif // !HAVE_CONFIG_H - -static WEBP_INLINE uint16_t BSwap16(uint16_t x) { -#if defined(HAVE_BUILTIN_BSWAP16) - return __builtin_bswap16(x); -#elif defined(_MSC_VER) - return _byteswap_ushort(x); -#else - // gcc will recognize a 'rorw $8, ...' here: - return (x >> 8) | ((x & 0xff) << 8); -#endif // HAVE_BUILTIN_BSWAP16 -} - -static WEBP_INLINE uint32_t BSwap32(uint32_t x) { -#if defined(WEBP_USE_MIPS32_R2) - uint32_t ret; - __asm__ volatile ( - "wsbh %[ret], %[x] \n\t" - "rotr %[ret], %[ret], 16 \n\t" - : [ret]"=r"(ret) - : [x]"r"(x) - ); - return ret; -#elif defined(HAVE_BUILTIN_BSWAP32) - return __builtin_bswap32(x); -#elif defined(__i386__) || defined(__x86_64__) - uint32_t swapped_bytes; - __asm__ volatile("bswap %0" : "=r"(swapped_bytes) : "0"(x)); - return swapped_bytes; -#elif defined(_MSC_VER) - return (uint32_t)_byteswap_ulong(x); -#else - return (x >> 24) | ((x >> 8) & 0xff00) | ((x << 8) & 0xff0000) | (x << 24); -#endif // HAVE_BUILTIN_BSWAP32 -} - -static WEBP_INLINE uint64_t BSwap64(uint64_t x) { -#if defined(HAVE_BUILTIN_BSWAP64) - return __builtin_bswap64(x); -#elif defined(__x86_64__) - uint64_t swapped_bytes; - __asm__ volatile("bswapq %0" : "=r"(swapped_bytes) : "0"(x)); - return swapped_bytes; -#elif defined(_MSC_VER) - return (uint64_t)_byteswap_uint64(x); -#else // generic code for swapping 64-bit values (suggested by bdb@) - x = ((x & 0xffffffff00000000ull) >> 32) | ((x & 0x00000000ffffffffull) << 32); - x = ((x & 0xffff0000ffff0000ull) >> 16) | ((x & 0x0000ffff0000ffffull) << 16); - x = ((x & 0xff00ff00ff00ff00ull) >> 8) | ((x & 0x00ff00ff00ff00ffull) << 8); - return x; -#endif // HAVE_BUILTIN_BSWAP64 -} - -#endif // WEBP_UTILS_ENDIAN_INL_H_ diff --git a/thirdparty/libwebp/utils/filters_utils.c b/thirdparty/libwebp/utils/filters_utils.c deleted file mode 100644 index 49c1d18a22..0000000000 --- a/thirdparty/libwebp/utils/filters_utils.c +++ /dev/null @@ -1,76 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// filter estimation -// -// Author: Urvang (urvang@google.com) - -#include "./filters_utils.h" -#include <stdlib.h> -#include <string.h> - -// ----------------------------------------------------------------------------- -// Quick estimate of a potentially interesting filter mode to try. - -#define SMAX 16 -#define SDIFF(a, b) (abs((a) - (b)) >> 4) // Scoring diff, in [0..SMAX) - -static WEBP_INLINE int GradientPredictor(uint8_t a, uint8_t b, uint8_t c) { - const int g = a + b - c; - return ((g & ~0xff) == 0) ? g : (g < 0) ? 0 : 255; // clip to 8bit -} - -WEBP_FILTER_TYPE WebPEstimateBestFilter(const uint8_t* data, - int width, int height, int stride) { - int i, j; - int bins[WEBP_FILTER_LAST][SMAX]; - memset(bins, 0, sizeof(bins)); - - // We only sample every other pixels. That's enough. - for (j = 2; j < height - 1; j += 2) { - const uint8_t* const p = data + j * stride; - int mean = p[0]; - for (i = 2; i < width - 1; i += 2) { - const int diff0 = SDIFF(p[i], mean); - const int diff1 = SDIFF(p[i], p[i - 1]); - const int diff2 = SDIFF(p[i], p[i - width]); - const int grad_pred = - GradientPredictor(p[i - 1], p[i - width], p[i - width - 1]); - const int diff3 = SDIFF(p[i], grad_pred); - bins[WEBP_FILTER_NONE][diff0] = 1; - bins[WEBP_FILTER_HORIZONTAL][diff1] = 1; - bins[WEBP_FILTER_VERTICAL][diff2] = 1; - bins[WEBP_FILTER_GRADIENT][diff3] = 1; - mean = (3 * mean + p[i] + 2) >> 2; - } - } - { - int filter; - WEBP_FILTER_TYPE best_filter = WEBP_FILTER_NONE; - int best_score = 0x7fffffff; - for (filter = WEBP_FILTER_NONE; filter < WEBP_FILTER_LAST; ++filter) { - int score = 0; - for (i = 0; i < SMAX; ++i) { - if (bins[filter][i] > 0) { - score += i; - } - } - if (score < best_score) { - best_score = score; - best_filter = (WEBP_FILTER_TYPE)filter; - } - } - return best_filter; - } -} - -#undef SMAX -#undef SDIFF - -//------------------------------------------------------------------------------ diff --git a/thirdparty/libwebp/utils/filters_utils.h b/thirdparty/libwebp/utils/filters_utils.h deleted file mode 100644 index 088b132fc5..0000000000 --- a/thirdparty/libwebp/utils/filters_utils.h +++ /dev/null @@ -1,32 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Spatial prediction using various filters -// -// Author: Urvang (urvang@google.com) - -#ifndef WEBP_UTILS_FILTERS_H_ -#define WEBP_UTILS_FILTERS_H_ - -#include "../webp/types.h" -#include "../dsp/dsp.h" - -#ifdef __cplusplus -extern "C" { -#endif - -// Fast estimate of a potentially good filter. -WEBP_FILTER_TYPE WebPEstimateBestFilter(const uint8_t* data, - int width, int height, int stride); - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif /* WEBP_UTILS_FILTERS_H_ */ diff --git a/thirdparty/libwebp/utils/huffman_encode_utils.c b/thirdparty/libwebp/utils/huffman_encode_utils.c deleted file mode 100644 index f9504658ea..0000000000 --- a/thirdparty/libwebp/utils/huffman_encode_utils.c +++ /dev/null @@ -1,417 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Author: Jyrki Alakuijala (jyrki@google.com) -// -// Entropy encoding (Huffman) for webp lossless. - -#include <assert.h> -#include <stdlib.h> -#include <string.h> -#include "./huffman_encode_utils.h" -#include "./utils.h" -#include "../webp/format_constants.h" - -// ----------------------------------------------------------------------------- -// Util function to optimize the symbol map for RLE coding - -// Heuristics for selecting the stride ranges to collapse. -static int ValuesShouldBeCollapsedToStrideAverage(int a, int b) { - return abs(a - b) < 4; -} - -// Change the population counts in a way that the consequent -// Huffman tree compression, especially its RLE-part, give smaller output. -static void OptimizeHuffmanForRle(int length, uint8_t* const good_for_rle, - uint32_t* const counts) { - // 1) Let's make the Huffman code more compatible with rle encoding. - int i; - for (; length >= 0; --length) { - if (length == 0) { - return; // All zeros. - } - if (counts[length - 1] != 0) { - // Now counts[0..length - 1] does not have trailing zeros. - break; - } - } - // 2) Let's mark all population counts that already can be encoded - // with an rle code. - { - // Let's not spoil any of the existing good rle codes. - // Mark any seq of 0's that is longer as 5 as a good_for_rle. - // Mark any seq of non-0's that is longer as 7 as a good_for_rle. - uint32_t symbol = counts[0]; - int stride = 0; - for (i = 0; i < length + 1; ++i) { - if (i == length || counts[i] != symbol) { - if ((symbol == 0 && stride >= 5) || - (symbol != 0 && stride >= 7)) { - int k; - for (k = 0; k < stride; ++k) { - good_for_rle[i - k - 1] = 1; - } - } - stride = 1; - if (i != length) { - symbol = counts[i]; - } - } else { - ++stride; - } - } - } - // 3) Let's replace those population counts that lead to more rle codes. - { - uint32_t stride = 0; - uint32_t limit = counts[0]; - uint32_t sum = 0; - for (i = 0; i < length + 1; ++i) { - if (i == length || good_for_rle[i] || - (i != 0 && good_for_rle[i - 1]) || - !ValuesShouldBeCollapsedToStrideAverage(counts[i], limit)) { - if (stride >= 4 || (stride >= 3 && sum == 0)) { - uint32_t k; - // The stride must end, collapse what we have, if we have enough (4). - uint32_t count = (sum + stride / 2) / stride; - if (count < 1) { - count = 1; - } - if (sum == 0) { - // Don't make an all zeros stride to be upgraded to ones. - count = 0; - } - for (k = 0; k < stride; ++k) { - // We don't want to change value at counts[i], - // that is already belonging to the next stride. Thus - 1. - counts[i - k - 1] = count; - } - } - stride = 0; - sum = 0; - if (i < length - 3) { - // All interesting strides have a count of at least 4, - // at least when non-zeros. - limit = (counts[i] + counts[i + 1] + - counts[i + 2] + counts[i + 3] + 2) / 4; - } else if (i < length) { - limit = counts[i]; - } else { - limit = 0; - } - } - ++stride; - if (i != length) { - sum += counts[i]; - if (stride >= 4) { - limit = (sum + stride / 2) / stride; - } - } - } - } -} - -// A comparer function for two Huffman trees: sorts first by 'total count' -// (more comes first), and then by 'value' (more comes first). -static int CompareHuffmanTrees(const void* ptr1, const void* ptr2) { - const HuffmanTree* const t1 = (const HuffmanTree*)ptr1; - const HuffmanTree* const t2 = (const HuffmanTree*)ptr2; - if (t1->total_count_ > t2->total_count_) { - return -1; - } else if (t1->total_count_ < t2->total_count_) { - return 1; - } else { - assert(t1->value_ != t2->value_); - return (t1->value_ < t2->value_) ? -1 : 1; - } -} - -static void SetBitDepths(const HuffmanTree* const tree, - const HuffmanTree* const pool, - uint8_t* const bit_depths, int level) { - if (tree->pool_index_left_ >= 0) { - SetBitDepths(&pool[tree->pool_index_left_], pool, bit_depths, level + 1); - SetBitDepths(&pool[tree->pool_index_right_], pool, bit_depths, level + 1); - } else { - bit_depths[tree->value_] = level; - } -} - -// Create an optimal Huffman tree. -// -// (data,length): population counts. -// tree_limit: maximum bit depth (inclusive) of the codes. -// bit_depths[]: how many bits are used for the symbol. -// -// Returns 0 when an error has occurred. -// -// The catch here is that the tree cannot be arbitrarily deep -// -// count_limit is the value that is to be faked as the minimum value -// and this minimum value is raised until the tree matches the -// maximum length requirement. -// -// This algorithm is not of excellent performance for very long data blocks, -// especially when population counts are longer than 2**tree_limit, but -// we are not planning to use this with extremely long blocks. -// -// See http://en.wikipedia.org/wiki/Huffman_coding -static void GenerateOptimalTree(const uint32_t* const histogram, - int histogram_size, - HuffmanTree* tree, int tree_depth_limit, - uint8_t* const bit_depths) { - uint32_t count_min; - HuffmanTree* tree_pool; - int tree_size_orig = 0; - int i; - - for (i = 0; i < histogram_size; ++i) { - if (histogram[i] != 0) { - ++tree_size_orig; - } - } - - if (tree_size_orig == 0) { // pretty optimal already! - return; - } - - tree_pool = tree + tree_size_orig; - - // For block sizes with less than 64k symbols we never need to do a - // second iteration of this loop. - // If we actually start running inside this loop a lot, we would perhaps - // be better off with the Katajainen algorithm. - assert(tree_size_orig <= (1 << (tree_depth_limit - 1))); - for (count_min = 1; ; count_min *= 2) { - int tree_size = tree_size_orig; - // We need to pack the Huffman tree in tree_depth_limit bits. - // So, we try by faking histogram entries to be at least 'count_min'. - int idx = 0; - int j; - for (j = 0; j < histogram_size; ++j) { - if (histogram[j] != 0) { - const uint32_t count = - (histogram[j] < count_min) ? count_min : histogram[j]; - tree[idx].total_count_ = count; - tree[idx].value_ = j; - tree[idx].pool_index_left_ = -1; - tree[idx].pool_index_right_ = -1; - ++idx; - } - } - - // Build the Huffman tree. - qsort(tree, tree_size, sizeof(*tree), CompareHuffmanTrees); - - if (tree_size > 1) { // Normal case. - int tree_pool_size = 0; - while (tree_size > 1) { // Finish when we have only one root. - uint32_t count; - tree_pool[tree_pool_size++] = tree[tree_size - 1]; - tree_pool[tree_pool_size++] = tree[tree_size - 2]; - count = tree_pool[tree_pool_size - 1].total_count_ + - tree_pool[tree_pool_size - 2].total_count_; - tree_size -= 2; - { - // Search for the insertion point. - int k; - for (k = 0; k < tree_size; ++k) { - if (tree[k].total_count_ <= count) { - break; - } - } - memmove(tree + (k + 1), tree + k, (tree_size - k) * sizeof(*tree)); - tree[k].total_count_ = count; - tree[k].value_ = -1; - - tree[k].pool_index_left_ = tree_pool_size - 1; - tree[k].pool_index_right_ = tree_pool_size - 2; - tree_size = tree_size + 1; - } - } - SetBitDepths(&tree[0], tree_pool, bit_depths, 0); - } else if (tree_size == 1) { // Trivial case: only one element. - bit_depths[tree[0].value_] = 1; - } - - { - // Test if this Huffman tree satisfies our 'tree_depth_limit' criteria. - int max_depth = bit_depths[0]; - for (j = 1; j < histogram_size; ++j) { - if (max_depth < bit_depths[j]) { - max_depth = bit_depths[j]; - } - } - if (max_depth <= tree_depth_limit) { - break; - } - } - } -} - -// ----------------------------------------------------------------------------- -// Coding of the Huffman tree values - -static HuffmanTreeToken* CodeRepeatedValues(int repetitions, - HuffmanTreeToken* tokens, - int value, int prev_value) { - assert(value <= MAX_ALLOWED_CODE_LENGTH); - if (value != prev_value) { - tokens->code = value; - tokens->extra_bits = 0; - ++tokens; - --repetitions; - } - while (repetitions >= 1) { - if (repetitions < 3) { - int i; - for (i = 0; i < repetitions; ++i) { - tokens->code = value; - tokens->extra_bits = 0; - ++tokens; - } - break; - } else if (repetitions < 7) { - tokens->code = 16; - tokens->extra_bits = repetitions - 3; - ++tokens; - break; - } else { - tokens->code = 16; - tokens->extra_bits = 3; - ++tokens; - repetitions -= 6; - } - } - return tokens; -} - -static HuffmanTreeToken* CodeRepeatedZeros(int repetitions, - HuffmanTreeToken* tokens) { - while (repetitions >= 1) { - if (repetitions < 3) { - int i; - for (i = 0; i < repetitions; ++i) { - tokens->code = 0; // 0-value - tokens->extra_bits = 0; - ++tokens; - } - break; - } else if (repetitions < 11) { - tokens->code = 17; - tokens->extra_bits = repetitions - 3; - ++tokens; - break; - } else if (repetitions < 139) { - tokens->code = 18; - tokens->extra_bits = repetitions - 11; - ++tokens; - break; - } else { - tokens->code = 18; - tokens->extra_bits = 0x7f; // 138 repeated 0s - ++tokens; - repetitions -= 138; - } - } - return tokens; -} - -int VP8LCreateCompressedHuffmanTree(const HuffmanTreeCode* const tree, - HuffmanTreeToken* tokens, int max_tokens) { - HuffmanTreeToken* const starting_token = tokens; - HuffmanTreeToken* const ending_token = tokens + max_tokens; - const int depth_size = tree->num_symbols; - int prev_value = 8; // 8 is the initial value for rle. - int i = 0; - assert(tokens != NULL); - while (i < depth_size) { - const int value = tree->code_lengths[i]; - int k = i + 1; - int runs; - while (k < depth_size && tree->code_lengths[k] == value) ++k; - runs = k - i; - if (value == 0) { - tokens = CodeRepeatedZeros(runs, tokens); - } else { - tokens = CodeRepeatedValues(runs, tokens, value, prev_value); - prev_value = value; - } - i += runs; - assert(tokens <= ending_token); - } - (void)ending_token; // suppress 'unused variable' warning - return (int)(tokens - starting_token); -} - -// ----------------------------------------------------------------------------- - -// Pre-reversed 4-bit values. -static const uint8_t kReversedBits[16] = { - 0x0, 0x8, 0x4, 0xc, 0x2, 0xa, 0x6, 0xe, - 0x1, 0x9, 0x5, 0xd, 0x3, 0xb, 0x7, 0xf -}; - -static uint32_t ReverseBits(int num_bits, uint32_t bits) { - uint32_t retval = 0; - int i = 0; - while (i < num_bits) { - i += 4; - retval |= kReversedBits[bits & 0xf] << (MAX_ALLOWED_CODE_LENGTH + 1 - i); - bits >>= 4; - } - retval >>= (MAX_ALLOWED_CODE_LENGTH + 1 - num_bits); - return retval; -} - -// Get the actual bit values for a tree of bit depths. -static void ConvertBitDepthsToSymbols(HuffmanTreeCode* const tree) { - // 0 bit-depth means that the symbol does not exist. - int i; - int len; - uint32_t next_code[MAX_ALLOWED_CODE_LENGTH + 1]; - int depth_count[MAX_ALLOWED_CODE_LENGTH + 1] = { 0 }; - - assert(tree != NULL); - len = tree->num_symbols; - for (i = 0; i < len; ++i) { - const int code_length = tree->code_lengths[i]; - assert(code_length <= MAX_ALLOWED_CODE_LENGTH); - ++depth_count[code_length]; - } - depth_count[0] = 0; // ignore unused symbol - next_code[0] = 0; - { - uint32_t code = 0; - for (i = 1; i <= MAX_ALLOWED_CODE_LENGTH; ++i) { - code = (code + depth_count[i - 1]) << 1; - next_code[i] = code; - } - } - for (i = 0; i < len; ++i) { - const int code_length = tree->code_lengths[i]; - tree->codes[i] = ReverseBits(code_length, next_code[code_length]++); - } -} - -// ----------------------------------------------------------------------------- -// Main entry point - -void VP8LCreateHuffmanTree(uint32_t* const histogram, int tree_depth_limit, - uint8_t* const buf_rle, - HuffmanTree* const huff_tree, - HuffmanTreeCode* const huff_code) { - const int num_symbols = huff_code->num_symbols; - memset(buf_rle, 0, num_symbols * sizeof(*buf_rle)); - OptimizeHuffmanForRle(num_symbols, buf_rle, histogram); - GenerateOptimalTree(histogram, num_symbols, huff_tree, tree_depth_limit, - huff_code->code_lengths); - // Create the actual bit codes for the bit lengths. - ConvertBitDepthsToSymbols(huff_code); -} diff --git a/thirdparty/libwebp/utils/huffman_encode_utils.h b/thirdparty/libwebp/utils/huffman_encode_utils.h deleted file mode 100644 index a157165148..0000000000 --- a/thirdparty/libwebp/utils/huffman_encode_utils.h +++ /dev/null @@ -1,60 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Author: Jyrki Alakuijala (jyrki@google.com) -// -// Entropy encoding (Huffman) for webp lossless - -#ifndef WEBP_UTILS_HUFFMAN_ENCODE_H_ -#define WEBP_UTILS_HUFFMAN_ENCODE_H_ - -#include "../webp/types.h" - -#ifdef __cplusplus -extern "C" { -#endif - -// Struct for holding the tree header in coded form. -typedef struct { - uint8_t code; // value (0..15) or escape code (16,17,18) - uint8_t extra_bits; // extra bits for escape codes -} HuffmanTreeToken; - -// Struct to represent the tree codes (depth and bits array). -typedef struct { - int num_symbols; // Number of symbols. - uint8_t* code_lengths; // Code lengths of the symbols. - uint16_t* codes; // Symbol Codes. -} HuffmanTreeCode; - -// Struct to represent the Huffman tree. -typedef struct { - uint32_t total_count_; // Symbol frequency. - int value_; // Symbol value. - int pool_index_left_; // Index for the left sub-tree. - int pool_index_right_; // Index for the right sub-tree. -} HuffmanTree; - -// Turn the Huffman tree into a token sequence. -// Returns the number of tokens used. -int VP8LCreateCompressedHuffmanTree(const HuffmanTreeCode* const tree, - HuffmanTreeToken* tokens, int max_tokens); - -// Create an optimized tree, and tokenize it. -// 'buf_rle' and 'huff_tree' are pre-allocated and the 'tree' is the constructed -// huffman code tree. -void VP8LCreateHuffmanTree(uint32_t* const histogram, int tree_depth_limit, - uint8_t* const buf_rle, HuffmanTree* const huff_tree, - HuffmanTreeCode* const tree); - -#ifdef __cplusplus -} -#endif - -#endif // WEBP_UTILS_HUFFMAN_ENCODE_H_ diff --git a/thirdparty/libwebp/utils/huffman_utils.c b/thirdparty/libwebp/utils/huffman_utils.c deleted file mode 100644 index 008b5d746f..0000000000 --- a/thirdparty/libwebp/utils/huffman_utils.c +++ /dev/null @@ -1,223 +0,0 @@ -// Copyright 2012 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Utilities for building and looking up Huffman trees. -// -// Author: Urvang Joshi (urvang@google.com) - -#include <assert.h> -#include <stdlib.h> -#include <string.h> -#include "./huffman_utils.h" -#include "./utils.h" -#include "../webp/format_constants.h" - -// Huffman data read via DecodeImageStream is represented in two (red and green) -// bytes. -#define MAX_HTREE_GROUPS 0x10000 - -HTreeGroup* VP8LHtreeGroupsNew(int num_htree_groups) { - HTreeGroup* const htree_groups = - (HTreeGroup*)WebPSafeMalloc(num_htree_groups, sizeof(*htree_groups)); - if (htree_groups == NULL) { - return NULL; - } - assert(num_htree_groups <= MAX_HTREE_GROUPS); - return htree_groups; -} - -void VP8LHtreeGroupsFree(HTreeGroup* const htree_groups) { - if (htree_groups != NULL) { - WebPSafeFree(htree_groups); - } -} - -// Returns reverse(reverse(key, len) + 1, len), where reverse(key, len) is the -// bit-wise reversal of the len least significant bits of key. -static WEBP_INLINE uint32_t GetNextKey(uint32_t key, int len) { - uint32_t step = 1 << (len - 1); - while (key & step) { - step >>= 1; - } - return step ? (key & (step - 1)) + step : key; -} - -// Stores code in table[0], table[step], table[2*step], ..., table[end]. -// Assumes that end is an integer multiple of step. -static WEBP_INLINE void ReplicateValue(HuffmanCode* table, - int step, int end, - HuffmanCode code) { - assert(end % step == 0); - do { - end -= step; - table[end] = code; - } while (end > 0); -} - -// Returns the table width of the next 2nd level table. count is the histogram -// of bit lengths for the remaining symbols, len is the code length of the next -// processed symbol -static WEBP_INLINE int NextTableBitSize(const int* const count, - int len, int root_bits) { - int left = 1 << (len - root_bits); - while (len < MAX_ALLOWED_CODE_LENGTH) { - left -= count[len]; - if (left <= 0) break; - ++len; - left <<= 1; - } - return len - root_bits; -} - -// sorted[code_lengths_size] is a pre-allocated array for sorting symbols -// by code length. -static int BuildHuffmanTable(HuffmanCode* const root_table, int root_bits, - const int code_lengths[], int code_lengths_size, - uint16_t sorted[]) { - HuffmanCode* table = root_table; // next available space in table - int total_size = 1 << root_bits; // total size root table + 2nd level table - int len; // current code length - int symbol; // symbol index in original or sorted table - // number of codes of each length: - int count[MAX_ALLOWED_CODE_LENGTH + 1] = { 0 }; - // offsets in sorted table for each length: - int offset[MAX_ALLOWED_CODE_LENGTH + 1]; - - assert(code_lengths_size != 0); - assert(code_lengths != NULL); - assert(root_table != NULL); - assert(root_bits > 0); - - // Build histogram of code lengths. - for (symbol = 0; symbol < code_lengths_size; ++symbol) { - if (code_lengths[symbol] > MAX_ALLOWED_CODE_LENGTH) { - return 0; - } - ++count[code_lengths[symbol]]; - } - - // Error, all code lengths are zeros. - if (count[0] == code_lengths_size) { - return 0; - } - - // Generate offsets into sorted symbol table by code length. - offset[1] = 0; - for (len = 1; len < MAX_ALLOWED_CODE_LENGTH; ++len) { - if (count[len] > (1 << len)) { - return 0; - } - offset[len + 1] = offset[len] + count[len]; - } - - // Sort symbols by length, by symbol order within each length. - for (symbol = 0; symbol < code_lengths_size; ++symbol) { - const int symbol_code_length = code_lengths[symbol]; - if (code_lengths[symbol] > 0) { - sorted[offset[symbol_code_length]++] = symbol; - } - } - - // Special case code with only one value. - if (offset[MAX_ALLOWED_CODE_LENGTH] == 1) { - HuffmanCode code; - code.bits = 0; - code.value = (uint16_t)sorted[0]; - ReplicateValue(table, 1, total_size, code); - return total_size; - } - - { - int step; // step size to replicate values in current table - uint32_t low = -1; // low bits for current root entry - uint32_t mask = total_size - 1; // mask for low bits - uint32_t key = 0; // reversed prefix code - int num_nodes = 1; // number of Huffman tree nodes - int num_open = 1; // number of open branches in current tree level - int table_bits = root_bits; // key length of current table - int table_size = 1 << table_bits; // size of current table - symbol = 0; - // Fill in root table. - for (len = 1, step = 2; len <= root_bits; ++len, step <<= 1) { - num_open <<= 1; - num_nodes += num_open; - num_open -= count[len]; - if (num_open < 0) { - return 0; - } - for (; count[len] > 0; --count[len]) { - HuffmanCode code; - code.bits = (uint8_t)len; - code.value = (uint16_t)sorted[symbol++]; - ReplicateValue(&table[key], step, table_size, code); - key = GetNextKey(key, len); - } - } - - // Fill in 2nd level tables and add pointers to root table. - for (len = root_bits + 1, step = 2; len <= MAX_ALLOWED_CODE_LENGTH; - ++len, step <<= 1) { - num_open <<= 1; - num_nodes += num_open; - num_open -= count[len]; - if (num_open < 0) { - return 0; - } - for (; count[len] > 0; --count[len]) { - HuffmanCode code; - if ((key & mask) != low) { - table += table_size; - table_bits = NextTableBitSize(count, len, root_bits); - table_size = 1 << table_bits; - total_size += table_size; - low = key & mask; - root_table[low].bits = (uint8_t)(table_bits + root_bits); - root_table[low].value = (uint16_t)((table - root_table) - low); - } - code.bits = (uint8_t)(len - root_bits); - code.value = (uint16_t)sorted[symbol++]; - ReplicateValue(&table[key >> root_bits], step, table_size, code); - key = GetNextKey(key, len); - } - } - - // Check if tree is full. - if (num_nodes != 2 * offset[MAX_ALLOWED_CODE_LENGTH] - 1) { - return 0; - } - } - - return total_size; -} - -// Maximum code_lengths_size is 2328 (reached for 11-bit color_cache_bits). -// More commonly, the value is around ~280. -#define MAX_CODE_LENGTHS_SIZE \ - ((1 << MAX_CACHE_BITS) + NUM_LITERAL_CODES + NUM_LENGTH_CODES) -// Cut-off value for switching between heap and stack allocation. -#define SORTED_SIZE_CUTOFF 512 -int VP8LBuildHuffmanTable(HuffmanCode* const root_table, int root_bits, - const int code_lengths[], int code_lengths_size) { - int total_size; - assert(code_lengths_size <= MAX_CODE_LENGTHS_SIZE); - if (code_lengths_size <= SORTED_SIZE_CUTOFF) { - // use local stack-allocated array. - uint16_t sorted[SORTED_SIZE_CUTOFF]; - total_size = BuildHuffmanTable(root_table, root_bits, - code_lengths, code_lengths_size, sorted); - } else { // rare case. Use heap allocation. - uint16_t* const sorted = - (uint16_t*)WebPSafeMalloc(code_lengths_size, sizeof(*sorted)); - if (sorted == NULL) return 0; - total_size = BuildHuffmanTable(root_table, root_bits, - code_lengths, code_lengths_size, sorted); - WebPSafeFree(sorted); - } - return total_size; -} diff --git a/thirdparty/libwebp/utils/huffman_utils.h b/thirdparty/libwebp/utils/huffman_utils.h deleted file mode 100644 index c6dd6aaa45..0000000000 --- a/thirdparty/libwebp/utils/huffman_utils.h +++ /dev/null @@ -1,88 +0,0 @@ -// Copyright 2012 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Utilities for building and looking up Huffman trees. -// -// Author: Urvang Joshi (urvang@google.com) - -#ifndef WEBP_UTILS_HUFFMAN_H_ -#define WEBP_UTILS_HUFFMAN_H_ - -#include <assert.h> -#include "../webp/format_constants.h" -#include "../webp/types.h" - -#ifdef __cplusplus -extern "C" { -#endif - -#define HUFFMAN_TABLE_BITS 8 -#define HUFFMAN_TABLE_MASK ((1 << HUFFMAN_TABLE_BITS) - 1) - -#define LENGTHS_TABLE_BITS 7 -#define LENGTHS_TABLE_MASK ((1 << LENGTHS_TABLE_BITS) - 1) - - -// Huffman lookup table entry -typedef struct { - uint8_t bits; // number of bits used for this symbol - uint16_t value; // symbol value or table offset -} HuffmanCode; - -// long version for holding 32b values -typedef struct { - int bits; // number of bits used for this symbol, - // or an impossible value if not a literal code. - uint32_t value; // 32b packed ARGB value if literal, - // or non-literal symbol otherwise -} HuffmanCode32; - -#define HUFFMAN_PACKED_BITS 6 -#define HUFFMAN_PACKED_TABLE_SIZE (1u << HUFFMAN_PACKED_BITS) - -// Huffman table group. -// Includes special handling for the following cases: -// - is_trivial_literal: one common literal base for RED/BLUE/ALPHA (not GREEN) -// - is_trivial_code: only 1 code (no bit is read from bitstream) -// - use_packed_table: few enough literal symbols, so all the bit codes -// can fit into a small look-up table packed_table[] -// The common literal base, if applicable, is stored in 'literal_arb'. -typedef struct HTreeGroup HTreeGroup; -struct HTreeGroup { - HuffmanCode* htrees[HUFFMAN_CODES_PER_META_CODE]; - int is_trivial_literal; // True, if huffman trees for Red, Blue & Alpha - // Symbols are trivial (have a single code). - uint32_t literal_arb; // If is_trivial_literal is true, this is the - // ARGB value of the pixel, with Green channel - // being set to zero. - int is_trivial_code; // true if is_trivial_literal with only one code - int use_packed_table; // use packed table below for short literal code - // table mapping input bits to a packed values, or escape case to literal code - HuffmanCode32 packed_table[HUFFMAN_PACKED_TABLE_SIZE]; -}; - -// Creates the instance of HTreeGroup with specified number of tree-groups. -HTreeGroup* VP8LHtreeGroupsNew(int num_htree_groups); - -// Releases the memory allocated for HTreeGroup. -void VP8LHtreeGroupsFree(HTreeGroup* const htree_groups); - -// Builds Huffman lookup table assuming code lengths are in symbol order. -// The 'code_lengths' is pre-allocated temporary memory buffer used for creating -// the huffman table. -// Returns built table size or 0 in case of error (invalid tree or -// memory error). -int VP8LBuildHuffmanTable(HuffmanCode* const root_table, int root_bits, - const int code_lengths[], int code_lengths_size); - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif // WEBP_UTILS_HUFFMAN_H_ diff --git a/thirdparty/libwebp/utils/quant_levels_dec_utils.c b/thirdparty/libwebp/utils/quant_levels_dec_utils.c deleted file mode 100644 index d4d23d3147..0000000000 --- a/thirdparty/libwebp/utils/quant_levels_dec_utils.c +++ /dev/null @@ -1,284 +0,0 @@ -// Copyright 2013 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Implement gradient smoothing: we replace a current alpha value by its -// surrounding average if it's close enough (that is: the change will be less -// than the minimum distance between two quantized level). -// We use sliding window for computing the 2d moving average. -// -// Author: Skal (pascal.massimino@gmail.com) - -#include "./quant_levels_dec_utils.h" - -#include <string.h> // for memset - -#include "./utils.h" - -// #define USE_DITHERING // uncomment to enable ordered dithering (not vital) - -#define FIX 16 // fix-point precision for averaging -#define LFIX 2 // extra precision for look-up table -#define LUT_SIZE ((1 << (8 + LFIX)) - 1) // look-up table size - -#if defined(USE_DITHERING) - -#define DFIX 4 // extra precision for ordered dithering -#define DSIZE 4 // dithering size (must be a power of two) -// cf. http://en.wikipedia.org/wiki/Ordered_dithering -static const uint8_t kOrderedDither[DSIZE][DSIZE] = { - { 0, 8, 2, 10 }, // coefficients are in DFIX fixed-point precision - { 12, 4, 14, 6 }, - { 3, 11, 1, 9 }, - { 15, 7, 13, 5 } -}; - -#else -#define DFIX 0 -#endif - -typedef struct { - int width_, height_; // dimension - int stride_; // stride in bytes - int row_; // current input row being processed - uint8_t* src_; // input pointer - uint8_t* dst_; // output pointer - - int radius_; // filter radius (=delay) - int scale_; // normalization factor, in FIX bits precision - - void* mem_; // all memory - - // various scratch buffers - uint16_t* start_; - uint16_t* cur_; - uint16_t* end_; - uint16_t* top_; - uint16_t* average_; - - // input levels distribution - int num_levels_; // number of quantized levels - int min_, max_; // min and max level values - int min_level_dist_; // smallest distance between two consecutive levels - - int16_t* correction_; // size = 1 + 2*LUT_SIZE -> ~4k memory -} SmoothParams; - -//------------------------------------------------------------------------------ - -#define CLIP_MASK (int)(~0U << (8 + DFIX)) -static WEBP_INLINE uint8_t clip_8b(int v) { - return (!(v & CLIP_MASK)) ? (uint8_t)(v >> DFIX) : (v < 0) ? 0u : 255u; -} - -// vertical accumulation -static void VFilter(SmoothParams* const p) { - const uint8_t* src = p->src_; - const int w = p->width_; - uint16_t* const cur = p->cur_; - const uint16_t* const top = p->top_; - uint16_t* const out = p->end_; - uint16_t sum = 0; // all arithmetic is modulo 16bit - int x; - - for (x = 0; x < w; ++x) { - uint16_t new_value; - sum += src[x]; - new_value = top[x] + sum; - out[x] = new_value - cur[x]; // vertical sum of 'r' pixels. - cur[x] = new_value; - } - // move input pointers one row down - p->top_ = p->cur_; - p->cur_ += w; - if (p->cur_ == p->end_) p->cur_ = p->start_; // roll-over - // We replicate edges, as it's somewhat easier as a boundary condition. - // That's why we don't update the 'src' pointer on top/bottom area: - if (p->row_ >= 0 && p->row_ < p->height_ - 1) { - p->src_ += p->stride_; - } -} - -// horizontal accumulation. We use mirror replication of missing pixels, as it's -// a little easier to implement (surprisingly). -static void HFilter(SmoothParams* const p) { - const uint16_t* const in = p->end_; - uint16_t* const out = p->average_; - const uint32_t scale = p->scale_; - const int w = p->width_; - const int r = p->radius_; - - int x; - for (x = 0; x <= r; ++x) { // left mirroring - const uint16_t delta = in[x + r - 1] + in[r - x]; - out[x] = (delta * scale) >> FIX; - } - for (; x < w - r; ++x) { // bulk middle run - const uint16_t delta = in[x + r] - in[x - r - 1]; - out[x] = (delta * scale) >> FIX; - } - for (; x < w; ++x) { // right mirroring - const uint16_t delta = - 2 * in[w - 1] - in[2 * w - 2 - r - x] - in[x - r - 1]; - out[x] = (delta * scale) >> FIX; - } -} - -// emit one filtered output row -static void ApplyFilter(SmoothParams* const p) { - const uint16_t* const average = p->average_; - const int w = p->width_; - const int16_t* const correction = p->correction_; -#if defined(USE_DITHERING) - const uint8_t* const dither = kOrderedDither[p->row_ % DSIZE]; -#endif - uint8_t* const dst = p->dst_; - int x; - for (x = 0; x < w; ++x) { - const int v = dst[x]; - if (v < p->max_ && v > p->min_) { - const int c = (v << DFIX) + correction[average[x] - (v << LFIX)]; -#if defined(USE_DITHERING) - dst[x] = clip_8b(c + dither[x % DSIZE]); -#else - dst[x] = clip_8b(c); -#endif - } - } - p->dst_ += p->stride_; // advance output pointer -} - -//------------------------------------------------------------------------------ -// Initialize correction table - -static void InitCorrectionLUT(int16_t* const lut, int min_dist) { - // The correction curve is: - // f(x) = x for x <= threshold2 - // f(x) = 0 for x >= threshold1 - // and a linear interpolation for range x=[threshold2, threshold1] - // (along with f(-x) = -f(x) symmetry). - // Note that: threshold2 = 3/4 * threshold1 - const int threshold1 = min_dist << LFIX; - const int threshold2 = (3 * threshold1) >> 2; - const int max_threshold = threshold2 << DFIX; - const int delta = threshold1 - threshold2; - int i; - for (i = 1; i <= LUT_SIZE; ++i) { - int c = (i <= threshold2) ? (i << DFIX) - : (i < threshold1) ? max_threshold * (threshold1 - i) / delta - : 0; - c >>= LFIX; - lut[+i] = +c; - lut[-i] = -c; - } - lut[0] = 0; -} - -static void CountLevels(SmoothParams* const p) { - int i, j, last_level; - uint8_t used_levels[256] = { 0 }; - const uint8_t* data = p->src_; - p->min_ = 255; - p->max_ = 0; - for (j = 0; j < p->height_; ++j) { - for (i = 0; i < p->width_; ++i) { - const int v = data[i]; - if (v < p->min_) p->min_ = v; - if (v > p->max_) p->max_ = v; - used_levels[v] = 1; - } - data += p->stride_; - } - // Compute the mininum distance between two non-zero levels. - p->min_level_dist_ = p->max_ - p->min_; - last_level = -1; - for (i = 0; i < 256; ++i) { - if (used_levels[i]) { - ++p->num_levels_; - if (last_level >= 0) { - const int level_dist = i - last_level; - if (level_dist < p->min_level_dist_) { - p->min_level_dist_ = level_dist; - } - } - last_level = i; - } - } -} - -// Initialize all params. -static int InitParams(uint8_t* const data, int width, int height, int stride, - int radius, SmoothParams* const p) { - const int R = 2 * radius + 1; // total size of the kernel - - const size_t size_scratch_m = (R + 1) * width * sizeof(*p->start_); - const size_t size_m = width * sizeof(*p->average_); - const size_t size_lut = (1 + 2 * LUT_SIZE) * sizeof(*p->correction_); - const size_t total_size = size_scratch_m + size_m + size_lut; - uint8_t* mem = (uint8_t*)WebPSafeMalloc(1U, total_size); - - if (mem == NULL) return 0; - p->mem_ = (void*)mem; - - p->start_ = (uint16_t*)mem; - p->cur_ = p->start_; - p->end_ = p->start_ + R * width; - p->top_ = p->end_ - width; - memset(p->top_, 0, width * sizeof(*p->top_)); - mem += size_scratch_m; - - p->average_ = (uint16_t*)mem; - mem += size_m; - - p->width_ = width; - p->height_ = height; - p->stride_ = stride; - p->src_ = data; - p->dst_ = data; - p->radius_ = radius; - p->scale_ = (1 << (FIX + LFIX)) / (R * R); // normalization constant - p->row_ = -radius; - - // analyze the input distribution so we can best-fit the threshold - CountLevels(p); - - // correction table - p->correction_ = ((int16_t*)mem) + LUT_SIZE; - InitCorrectionLUT(p->correction_, p->min_level_dist_); - - return 1; -} - -static void CleanupParams(SmoothParams* const p) { - WebPSafeFree(p->mem_); -} - -int WebPDequantizeLevels(uint8_t* const data, int width, int height, int stride, - int strength) { - const int radius = 4 * strength / 100; - if (strength < 0 || strength > 100) return 0; - if (data == NULL || width <= 0 || height <= 0) return 0; // bad params - if (radius > 0) { - SmoothParams p; - memset(&p, 0, sizeof(p)); - if (!InitParams(data, width, height, stride, radius, &p)) return 0; - if (p.num_levels_ > 2) { - for (; p.row_ < p.height_; ++p.row_) { - VFilter(&p); // accumulate average of input - // Need to wait few rows in order to prime the filter, - // before emitting some output. - if (p.row_ >= p.radius_) { - HFilter(&p); - ApplyFilter(&p); - } - } - } - CleanupParams(&p); - } - return 1; -} diff --git a/thirdparty/libwebp/utils/quant_levels_dec_utils.h b/thirdparty/libwebp/utils/quant_levels_dec_utils.h deleted file mode 100644 index 59a13495d3..0000000000 --- a/thirdparty/libwebp/utils/quant_levels_dec_utils.h +++ /dev/null @@ -1,35 +0,0 @@ -// Copyright 2013 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Alpha plane de-quantization utility -// -// Author: Vikas Arora (vikasa@google.com) - -#ifndef WEBP_UTILS_QUANT_LEVELS_DEC_H_ -#define WEBP_UTILS_QUANT_LEVELS_DEC_H_ - -#include "../webp/types.h" - -#ifdef __cplusplus -extern "C" { -#endif - -// Apply post-processing to input 'data' of size 'width'x'height' assuming that -// the source was quantized to a reduced number of levels. 'stride' is in bytes. -// Strength is in [0..100] and controls the amount of dithering applied. -// Returns false in case of error (data is NULL, invalid parameters, -// malloc failure, ...). -int WebPDequantizeLevels(uint8_t* const data, int width, int height, int stride, - int strength); - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif /* WEBP_UTILS_QUANT_LEVELS_DEC_H_ */ diff --git a/thirdparty/libwebp/utils/quant_levels_utils.c b/thirdparty/libwebp/utils/quant_levels_utils.c deleted file mode 100644 index 73174e8ab9..0000000000 --- a/thirdparty/libwebp/utils/quant_levels_utils.c +++ /dev/null @@ -1,140 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Quantize levels for specified number of quantization-levels ([2, 256]). -// Min and max values are preserved (usual 0 and 255 for alpha plane). -// -// Author: Skal (pascal.massimino@gmail.com) - -#include <assert.h> - -#include "./quant_levels_utils.h" - -#define NUM_SYMBOLS 256 - -#define MAX_ITER 6 // Maximum number of convergence steps. -#define ERROR_THRESHOLD 1e-4 // MSE stopping criterion. - -// ----------------------------------------------------------------------------- -// Quantize levels. - -int QuantizeLevels(uint8_t* const data, int width, int height, - int num_levels, uint64_t* const sse) { - int freq[NUM_SYMBOLS] = { 0 }; - int q_level[NUM_SYMBOLS] = { 0 }; - double inv_q_level[NUM_SYMBOLS] = { 0 }; - int min_s = 255, max_s = 0; - const size_t data_size = height * width; - int i, num_levels_in, iter; - double last_err = 1.e38, err = 0.; - const double err_threshold = ERROR_THRESHOLD * data_size; - - if (data == NULL) { - return 0; - } - - if (width <= 0 || height <= 0) { - return 0; - } - - if (num_levels < 2 || num_levels > 256) { - return 0; - } - - { - size_t n; - num_levels_in = 0; - for (n = 0; n < data_size; ++n) { - num_levels_in += (freq[data[n]] == 0); - if (min_s > data[n]) min_s = data[n]; - if (max_s < data[n]) max_s = data[n]; - ++freq[data[n]]; - } - } - - if (num_levels_in <= num_levels) goto End; // nothing to do! - - // Start with uniformly spread centroids. - for (i = 0; i < num_levels; ++i) { - inv_q_level[i] = min_s + (double)(max_s - min_s) * i / (num_levels - 1); - } - - // Fixed values. Won't be changed. - q_level[min_s] = 0; - q_level[max_s] = num_levels - 1; - assert(inv_q_level[0] == min_s); - assert(inv_q_level[num_levels - 1] == max_s); - - // k-Means iterations. - for (iter = 0; iter < MAX_ITER; ++iter) { - double q_sum[NUM_SYMBOLS] = { 0 }; - double q_count[NUM_SYMBOLS] = { 0 }; - int s, slot = 0; - - // Assign classes to representatives. - for (s = min_s; s <= max_s; ++s) { - // Keep track of the nearest neighbour 'slot' - while (slot < num_levels - 1 && - 2 * s > inv_q_level[slot] + inv_q_level[slot + 1]) { - ++slot; - } - if (freq[s] > 0) { - q_sum[slot] += s * freq[s]; - q_count[slot] += freq[s]; - } - q_level[s] = slot; - } - - // Assign new representatives to classes. - if (num_levels > 2) { - for (slot = 1; slot < num_levels - 1; ++slot) { - const double count = q_count[slot]; - if (count > 0.) { - inv_q_level[slot] = q_sum[slot] / count; - } - } - } - - // Compute convergence error. - err = 0.; - for (s = min_s; s <= max_s; ++s) { - const double error = s - inv_q_level[q_level[s]]; - err += freq[s] * error * error; - } - - // Check for convergence: we stop as soon as the error is no - // longer improving. - if (last_err - err < err_threshold) break; - last_err = err; - } - - // Remap the alpha plane to quantized values. - { - // double->int rounding operation can be costly, so we do it - // once for all before remapping. We also perform the data[] -> slot - // mapping, while at it (avoid one indirection in the final loop). - uint8_t map[NUM_SYMBOLS]; - int s; - size_t n; - for (s = min_s; s <= max_s; ++s) { - const int slot = q_level[s]; - map[s] = (uint8_t)(inv_q_level[slot] + .5); - } - // Final pass. - for (n = 0; n < data_size; ++n) { - data[n] = map[data[n]]; - } - } - End: - // Store sum of squared error if needed. - if (sse != NULL) *sse = (uint64_t)err; - - return 1; -} - diff --git a/thirdparty/libwebp/utils/quant_levels_utils.h b/thirdparty/libwebp/utils/quant_levels_utils.h deleted file mode 100644 index 1cb5a32cae..0000000000 --- a/thirdparty/libwebp/utils/quant_levels_utils.h +++ /dev/null @@ -1,36 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Alpha plane quantization utility -// -// Author: Vikas Arora (vikasa@google.com) - -#ifndef WEBP_UTILS_QUANT_LEVELS_H_ -#define WEBP_UTILS_QUANT_LEVELS_H_ - -#include <stdlib.h> - -#include "../webp/types.h" - -#ifdef __cplusplus -extern "C" { -#endif - -// Replace the input 'data' of size 'width'x'height' with 'num-levels' -// quantized values. If not NULL, 'sse' will contain the sum of squared error. -// Valid range for 'num_levels' is [2, 256]. -// Returns false in case of error (data is NULL, or parameters are invalid). -int QuantizeLevels(uint8_t* const data, int width, int height, int num_levels, - uint64_t* const sse); - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif /* WEBP_UTILS_QUANT_LEVELS_H_ */ diff --git a/thirdparty/libwebp/utils/random_utils.c b/thirdparty/libwebp/utils/random_utils.c deleted file mode 100644 index 9f1e4154a6..0000000000 --- a/thirdparty/libwebp/utils/random_utils.c +++ /dev/null @@ -1,43 +0,0 @@ -// Copyright 2013 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Pseudo-random utilities -// -// Author: Skal (pascal.massimino@gmail.com) - -#include <string.h> -#include "./random_utils.h" - -//------------------------------------------------------------------------------ - -// 31b-range values -static const uint32_t kRandomTable[VP8_RANDOM_TABLE_SIZE] = { - 0x0de15230, 0x03b31886, 0x775faccb, 0x1c88626a, 0x68385c55, 0x14b3b828, - 0x4a85fef8, 0x49ddb84b, 0x64fcf397, 0x5c550289, 0x4a290000, 0x0d7ec1da, - 0x5940b7ab, 0x5492577d, 0x4e19ca72, 0x38d38c69, 0x0c01ee65, 0x32a1755f, - 0x5437f652, 0x5abb2c32, 0x0faa57b1, 0x73f533e7, 0x685feeda, 0x7563cce2, - 0x6e990e83, 0x4730a7ed, 0x4fc0d9c6, 0x496b153c, 0x4f1403fa, 0x541afb0c, - 0x73990b32, 0x26d7cb1c, 0x6fcc3706, 0x2cbb77d8, 0x75762f2a, 0x6425ccdd, - 0x24b35461, 0x0a7d8715, 0x220414a8, 0x141ebf67, 0x56b41583, 0x73e502e3, - 0x44cab16f, 0x28264d42, 0x73baaefb, 0x0a50ebed, 0x1d6ab6fb, 0x0d3ad40b, - 0x35db3b68, 0x2b081e83, 0x77ce6b95, 0x5181e5f0, 0x78853bbc, 0x009f9494, - 0x27e5ed3c -}; - -void VP8InitRandom(VP8Random* const rg, float dithering) { - memcpy(rg->tab_, kRandomTable, sizeof(rg->tab_)); - rg->index1_ = 0; - rg->index2_ = 31; - rg->amp_ = (dithering < 0.0) ? 0 - : (dithering > 1.0) ? (1 << VP8_RANDOM_DITHER_FIX) - : (uint32_t)((1 << VP8_RANDOM_DITHER_FIX) * dithering); -} - -//------------------------------------------------------------------------------ - diff --git a/thirdparty/libwebp/utils/random_utils.h b/thirdparty/libwebp/utils/random_utils.h deleted file mode 100644 index c392a615ca..0000000000 --- a/thirdparty/libwebp/utils/random_utils.h +++ /dev/null @@ -1,63 +0,0 @@ -// Copyright 2013 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Pseudo-random utilities -// -// Author: Skal (pascal.massimino@gmail.com) - -#ifndef WEBP_UTILS_RANDOM_H_ -#define WEBP_UTILS_RANDOM_H_ - -#include <assert.h> -#include "../webp/types.h" - -#ifdef __cplusplus -extern "C" { -#endif - -#define VP8_RANDOM_DITHER_FIX 8 // fixed-point precision for dithering -#define VP8_RANDOM_TABLE_SIZE 55 - -typedef struct { - int index1_, index2_; - uint32_t tab_[VP8_RANDOM_TABLE_SIZE]; - int amp_; -} VP8Random; - -// Initializes random generator with an amplitude 'dithering' in range [0..1]. -void VP8InitRandom(VP8Random* const rg, float dithering); - -// Returns a centered pseudo-random number with 'num_bits' amplitude. -// (uses D.Knuth's Difference-based random generator). -// 'amp' is in VP8_RANDOM_DITHER_FIX fixed-point precision. -static WEBP_INLINE int VP8RandomBits2(VP8Random* const rg, int num_bits, - int amp) { - int diff; - assert(num_bits + VP8_RANDOM_DITHER_FIX <= 31); - diff = rg->tab_[rg->index1_] - rg->tab_[rg->index2_]; - if (diff < 0) diff += (1u << 31); - rg->tab_[rg->index1_] = diff; - if (++rg->index1_ == VP8_RANDOM_TABLE_SIZE) rg->index1_ = 0; - if (++rg->index2_ == VP8_RANDOM_TABLE_SIZE) rg->index2_ = 0; - // sign-extend, 0-center - diff = (int)((uint32_t)diff << 1) >> (32 - num_bits); - diff = (diff * amp) >> VP8_RANDOM_DITHER_FIX; // restrict range - diff += 1 << (num_bits - 1); // shift back to 0.5-center - return diff; -} - -static WEBP_INLINE int VP8RandomBits(VP8Random* const rg, int num_bits) { - return VP8RandomBits2(rg, num_bits, rg->amp_); -} - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif /* WEBP_UTILS_RANDOM_H_ */ diff --git a/thirdparty/libwebp/utils/rescaler_utils.c b/thirdparty/libwebp/utils/rescaler_utils.c deleted file mode 100644 index 0d1f80da24..0000000000 --- a/thirdparty/libwebp/utils/rescaler_utils.c +++ /dev/null @@ -1,146 +0,0 @@ -// Copyright 2012 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Rescaling functions -// -// Author: Skal (pascal.massimino@gmail.com) - -#include <assert.h> -#include <stdlib.h> -#include <string.h> -#include "../dsp/dsp.h" -#include "./rescaler_utils.h" - -//------------------------------------------------------------------------------ - -void WebPRescalerInit(WebPRescaler* const wrk, int src_width, int src_height, - uint8_t* const dst, - int dst_width, int dst_height, int dst_stride, - int num_channels, rescaler_t* const work) { - const int x_add = src_width, x_sub = dst_width; - const int y_add = src_height, y_sub = dst_height; - wrk->x_expand = (src_width < dst_width); - wrk->y_expand = (src_height < dst_height); - wrk->src_width = src_width; - wrk->src_height = src_height; - wrk->dst_width = dst_width; - wrk->dst_height = dst_height; - wrk->src_y = 0; - wrk->dst_y = 0; - wrk->dst = dst; - wrk->dst_stride = dst_stride; - wrk->num_channels = num_channels; - - // for 'x_expand', we use bilinear interpolation - wrk->x_add = wrk->x_expand ? (x_sub - 1) : x_add; - wrk->x_sub = wrk->x_expand ? (x_add - 1) : x_sub; - if (!wrk->x_expand) { // fx_scale is not used otherwise - wrk->fx_scale = WEBP_RESCALER_FRAC(1, wrk->x_sub); - } - // vertical scaling parameters - wrk->y_add = wrk->y_expand ? y_add - 1 : y_add; - wrk->y_sub = wrk->y_expand ? y_sub - 1 : y_sub; - wrk->y_accum = wrk->y_expand ? wrk->y_sub : wrk->y_add; - if (!wrk->y_expand) { - // This is WEBP_RESCALER_FRAC(dst_height, x_add * y_add) without the cast. - // Its value is <= WEBP_RESCALER_ONE, because dst_height <= wrk->y_add, and - // wrk->x_add >= 1; - const uint64_t ratio = - (uint64_t)dst_height * WEBP_RESCALER_ONE / (wrk->x_add * wrk->y_add); - if (ratio != (uint32_t)ratio) { - // When ratio == WEBP_RESCALER_ONE, we can't represent the ratio with the - // current fixed-point precision. This happens when src_height == - // wrk->y_add (which == src_height), and wrk->x_add == 1. - // => We special-case fxy_scale = 0, in WebPRescalerExportRow(). - wrk->fxy_scale = 0; - } else { - wrk->fxy_scale = (uint32_t)ratio; - } - wrk->fy_scale = WEBP_RESCALER_FRAC(1, wrk->y_sub); - } else { - wrk->fy_scale = WEBP_RESCALER_FRAC(1, wrk->x_add); - // wrk->fxy_scale is unused here. - } - wrk->irow = work; - wrk->frow = work + num_channels * dst_width; - memset(work, 0, 2 * dst_width * num_channels * sizeof(*work)); - - WebPRescalerDspInit(); -} - -int WebPRescalerGetScaledDimensions(int src_width, int src_height, - int* const scaled_width, - int* const scaled_height) { - assert(scaled_width != NULL); - assert(scaled_height != NULL); - { - int width = *scaled_width; - int height = *scaled_height; - - // if width is unspecified, scale original proportionally to height ratio. - if (width == 0) { - width = (src_width * height + src_height / 2) / src_height; - } - // if height is unspecified, scale original proportionally to width ratio. - if (height == 0) { - height = (src_height * width + src_width / 2) / src_width; - } - // Check if the overall dimensions still make sense. - if (width <= 0 || height <= 0) { - return 0; - } - - *scaled_width = width; - *scaled_height = height; - return 1; - } -} - -//------------------------------------------------------------------------------ -// all-in-one calls - -int WebPRescaleNeededLines(const WebPRescaler* const wrk, int max_num_lines) { - const int num_lines = (wrk->y_accum + wrk->y_sub - 1) / wrk->y_sub; - return (num_lines > max_num_lines) ? max_num_lines : num_lines; -} - -int WebPRescalerImport(WebPRescaler* const wrk, int num_lines, - const uint8_t* src, int src_stride) { - int total_imported = 0; - while (total_imported < num_lines && !WebPRescalerHasPendingOutput(wrk)) { - if (wrk->y_expand) { - rescaler_t* const tmp = wrk->irow; - wrk->irow = wrk->frow; - wrk->frow = tmp; - } - WebPRescalerImportRow(wrk, src); - if (!wrk->y_expand) { // Accumulate the contribution of the new row. - int x; - for (x = 0; x < wrk->num_channels * wrk->dst_width; ++x) { - wrk->irow[x] += wrk->frow[x]; - } - } - ++wrk->src_y; - src += src_stride; - ++total_imported; - wrk->y_accum -= wrk->y_sub; - } - return total_imported; -} - -int WebPRescalerExport(WebPRescaler* const rescaler) { - int total_exported = 0; - while (WebPRescalerHasPendingOutput(rescaler)) { - WebPRescalerExportRow(rescaler); - ++total_exported; - } - return total_exported; -} - -//------------------------------------------------------------------------------ diff --git a/thirdparty/libwebp/utils/rescaler_utils.h b/thirdparty/libwebp/utils/rescaler_utils.h deleted file mode 100644 index 98b01a76d0..0000000000 --- a/thirdparty/libwebp/utils/rescaler_utils.h +++ /dev/null @@ -1,101 +0,0 @@ -// Copyright 2012 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Rescaling functions -// -// Author: Skal (pascal.massimino@gmail.com) - -#ifndef WEBP_UTILS_RESCALER_H_ -#define WEBP_UTILS_RESCALER_H_ - -#ifdef __cplusplus -extern "C" { -#endif - -#include "../webp/types.h" - -#define WEBP_RESCALER_RFIX 32 // fixed-point precision for multiplies -#define WEBP_RESCALER_ONE (1ull << WEBP_RESCALER_RFIX) -#define WEBP_RESCALER_FRAC(x, y) \ - ((uint32_t)(((uint64_t)(x) << WEBP_RESCALER_RFIX) / (y))) - -// Structure used for on-the-fly rescaling -typedef uint32_t rescaler_t; // type for side-buffer -typedef struct WebPRescaler WebPRescaler; -struct WebPRescaler { - int x_expand; // true if we're expanding in the x direction - int y_expand; // true if we're expanding in the y direction - int num_channels; // bytes to jump between pixels - uint32_t fx_scale; // fixed-point scaling factors - uint32_t fy_scale; // '' - uint32_t fxy_scale; // '' - int y_accum; // vertical accumulator - int y_add, y_sub; // vertical increments - int x_add, x_sub; // horizontal increments - int src_width, src_height; // source dimensions - int dst_width, dst_height; // destination dimensions - int src_y, dst_y; // row counters for input and output - uint8_t* dst; - int dst_stride; - rescaler_t* irow, *frow; // work buffer -}; - -// Initialize a rescaler given scratch area 'work' and dimensions of src & dst. -void WebPRescalerInit(WebPRescaler* const rescaler, - int src_width, int src_height, - uint8_t* const dst, - int dst_width, int dst_height, int dst_stride, - int num_channels, - rescaler_t* const work); - -// If either 'scaled_width' or 'scaled_height' (but not both) is 0 the value -// will be calculated preserving the aspect ratio, otherwise the values are -// left unmodified. Returns true on success, false if either value is 0 after -// performing the scaling calculation. -int WebPRescalerGetScaledDimensions(int src_width, int src_height, - int* const scaled_width, - int* const scaled_height); - -// Returns the number of input lines needed next to produce one output line, -// considering that the maximum available input lines are 'max_num_lines'. -int WebPRescaleNeededLines(const WebPRescaler* const rescaler, - int max_num_lines); - -// Import multiple rows over all channels, until at least one row is ready to -// be exported. Returns the actual number of lines that were imported. -int WebPRescalerImport(WebPRescaler* const rescaler, int num_rows, - const uint8_t* src, int src_stride); - -// Export as many rows as possible. Return the numbers of rows written. -int WebPRescalerExport(WebPRescaler* const rescaler); - -// Return true if input is finished -static WEBP_INLINE -int WebPRescalerInputDone(const WebPRescaler* const rescaler) { - return (rescaler->src_y >= rescaler->src_height); -} -// Return true if output is finished -static WEBP_INLINE -int WebPRescalerOutputDone(const WebPRescaler* const rescaler) { - return (rescaler->dst_y >= rescaler->dst_height); -} - -// Return true if there are pending output rows ready. -static WEBP_INLINE -int WebPRescalerHasPendingOutput(const WebPRescaler* const rescaler) { - return !WebPRescalerOutputDone(rescaler) && (rescaler->y_accum <= 0); -} - -//------------------------------------------------------------------------------ - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif /* WEBP_UTILS_RESCALER_H_ */ diff --git a/thirdparty/libwebp/utils/thread_utils.c b/thirdparty/libwebp/utils/thread_utils.c deleted file mode 100644 index 1729060c70..0000000000 --- a/thirdparty/libwebp/utils/thread_utils.c +++ /dev/null @@ -1,356 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Multi-threaded worker -// -// Author: Skal (pascal.massimino@gmail.com) - -#include <assert.h> -#include <string.h> // for memset() -#include "./thread_utils.h" -#include "./utils.h" - -#ifdef WEBP_USE_THREAD - -#if defined(_WIN32) - -#include <windows.h> -typedef HANDLE pthread_t; -typedef CRITICAL_SECTION pthread_mutex_t; - -#if _WIN32_WINNT >= 0x0600 // Windows Vista / Server 2008 or greater -#define USE_WINDOWS_CONDITION_VARIABLE -typedef CONDITION_VARIABLE pthread_cond_t; -#else -typedef struct { - HANDLE waiting_sem_; - HANDLE received_sem_; - HANDLE signal_event_; -} pthread_cond_t; -#endif // _WIN32_WINNT >= 0x600 - -#ifndef WINAPI_FAMILY_PARTITION -#define WINAPI_PARTITION_DESKTOP 1 -#define WINAPI_FAMILY_PARTITION(x) x -#endif - -#if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) -#define USE_CREATE_THREAD -#endif - -#else // !_WIN32 - -#include <pthread.h> - -#endif // _WIN32 - -struct WebPWorkerImpl { - pthread_mutex_t mutex_; - pthread_cond_t condition_; - pthread_t thread_; -}; - -#if defined(_WIN32) - -//------------------------------------------------------------------------------ -// simplistic pthread emulation layer - -#include <process.h> - -// _beginthreadex requires __stdcall -#define THREADFN unsigned int __stdcall -#define THREAD_RETURN(val) (unsigned int)((DWORD_PTR)val) - -#if _WIN32_WINNT >= 0x0501 // Windows XP or greater -#define WaitForSingleObject(obj, timeout) \ - WaitForSingleObjectEx(obj, timeout, FALSE /*bAlertable*/) -#endif - -static int pthread_create(pthread_t* const thread, const void* attr, - unsigned int (__stdcall *start)(void*), void* arg) { - (void)attr; -#ifdef USE_CREATE_THREAD - *thread = CreateThread(NULL, /* lpThreadAttributes */ - 0, /* dwStackSize */ - start, - arg, - 0, /* dwStackSize */ - NULL); /* lpThreadId */ -#else - *thread = (pthread_t)_beginthreadex(NULL, /* void *security */ - 0, /* unsigned stack_size */ - start, - arg, - 0, /* unsigned initflag */ - NULL); /* unsigned *thrdaddr */ -#endif - if (*thread == NULL) return 1; - SetThreadPriority(*thread, THREAD_PRIORITY_ABOVE_NORMAL); - return 0; -} - -static int pthread_join(pthread_t thread, void** value_ptr) { - (void)value_ptr; - return (WaitForSingleObject(thread, INFINITE) != WAIT_OBJECT_0 || - CloseHandle(thread) == 0); -} - -// Mutex -static int pthread_mutex_init(pthread_mutex_t* const mutex, void* mutexattr) { - (void)mutexattr; -#if _WIN32_WINNT >= 0x0600 // Windows Vista / Server 2008 or greater - InitializeCriticalSectionEx(mutex, 0 /*dwSpinCount*/, 0 /*Flags*/); -#else - InitializeCriticalSection(mutex); -#endif - return 0; -} - -static int pthread_mutex_lock(pthread_mutex_t* const mutex) { - EnterCriticalSection(mutex); - return 0; -} - -static int pthread_mutex_unlock(pthread_mutex_t* const mutex) { - LeaveCriticalSection(mutex); - return 0; -} - -static int pthread_mutex_destroy(pthread_mutex_t* const mutex) { - DeleteCriticalSection(mutex); - return 0; -} - -// Condition -static int pthread_cond_destroy(pthread_cond_t* const condition) { - int ok = 1; -#ifdef USE_WINDOWS_CONDITION_VARIABLE - (void)condition; -#else - ok &= (CloseHandle(condition->waiting_sem_) != 0); - ok &= (CloseHandle(condition->received_sem_) != 0); - ok &= (CloseHandle(condition->signal_event_) != 0); -#endif - return !ok; -} - -static int pthread_cond_init(pthread_cond_t* const condition, void* cond_attr) { - (void)cond_attr; -#ifdef USE_WINDOWS_CONDITION_VARIABLE - InitializeConditionVariable(condition); -#else - condition->waiting_sem_ = CreateSemaphore(NULL, 0, 1, NULL); - condition->received_sem_ = CreateSemaphore(NULL, 0, 1, NULL); - condition->signal_event_ = CreateEvent(NULL, FALSE, FALSE, NULL); - if (condition->waiting_sem_ == NULL || - condition->received_sem_ == NULL || - condition->signal_event_ == NULL) { - pthread_cond_destroy(condition); - return 1; - } -#endif - return 0; -} - -static int pthread_cond_signal(pthread_cond_t* const condition) { - int ok = 1; -#ifdef USE_WINDOWS_CONDITION_VARIABLE - WakeConditionVariable(condition); -#else - if (WaitForSingleObject(condition->waiting_sem_, 0) == WAIT_OBJECT_0) { - // a thread is waiting in pthread_cond_wait: allow it to be notified - ok = SetEvent(condition->signal_event_); - // wait until the event is consumed so the signaler cannot consume - // the event via its own pthread_cond_wait. - ok &= (WaitForSingleObject(condition->received_sem_, INFINITE) != - WAIT_OBJECT_0); - } -#endif - return !ok; -} - -static int pthread_cond_wait(pthread_cond_t* const condition, - pthread_mutex_t* const mutex) { - int ok; -#ifdef USE_WINDOWS_CONDITION_VARIABLE - ok = SleepConditionVariableCS(condition, mutex, INFINITE); -#else - // note that there is a consumer available so the signal isn't dropped in - // pthread_cond_signal - if (!ReleaseSemaphore(condition->waiting_sem_, 1, NULL)) return 1; - // now unlock the mutex so pthread_cond_signal may be issued - pthread_mutex_unlock(mutex); - ok = (WaitForSingleObject(condition->signal_event_, INFINITE) == - WAIT_OBJECT_0); - ok &= ReleaseSemaphore(condition->received_sem_, 1, NULL); - pthread_mutex_lock(mutex); -#endif - return !ok; -} - -#else // !_WIN32 -# define THREADFN void* -# define THREAD_RETURN(val) val -#endif // _WIN32 - -//------------------------------------------------------------------------------ - -static void Execute(WebPWorker* const worker); // Forward declaration. - -static THREADFN ThreadLoop(void* ptr) { - WebPWorker* const worker = (WebPWorker*)ptr; - int done = 0; - while (!done) { - pthread_mutex_lock(&worker->impl_->mutex_); - while (worker->status_ == OK) { // wait in idling mode - pthread_cond_wait(&worker->impl_->condition_, &worker->impl_->mutex_); - } - if (worker->status_ == WORK) { - Execute(worker); - worker->status_ = OK; - } else if (worker->status_ == NOT_OK) { // finish the worker - done = 1; - } - // signal to the main thread that we're done (for Sync()) - pthread_cond_signal(&worker->impl_->condition_); - pthread_mutex_unlock(&worker->impl_->mutex_); - } - return THREAD_RETURN(NULL); // Thread is finished -} - -// main thread state control -static void ChangeState(WebPWorker* const worker, WebPWorkerStatus new_status) { - // No-op when attempting to change state on a thread that didn't come up. - // Checking status_ without acquiring the lock first would result in a data - // race. - if (worker->impl_ == NULL) return; - - pthread_mutex_lock(&worker->impl_->mutex_); - if (worker->status_ >= OK) { - // wait for the worker to finish - while (worker->status_ != OK) { - pthread_cond_wait(&worker->impl_->condition_, &worker->impl_->mutex_); - } - // assign new status and release the working thread if needed - if (new_status != OK) { - worker->status_ = new_status; - pthread_cond_signal(&worker->impl_->condition_); - } - } - pthread_mutex_unlock(&worker->impl_->mutex_); -} - -#endif // WEBP_USE_THREAD - -//------------------------------------------------------------------------------ - -static void Init(WebPWorker* const worker) { - memset(worker, 0, sizeof(*worker)); - worker->status_ = NOT_OK; -} - -static int Sync(WebPWorker* const worker) { -#ifdef WEBP_USE_THREAD - ChangeState(worker, OK); -#endif - assert(worker->status_ <= OK); - return !worker->had_error; -} - -static int Reset(WebPWorker* const worker) { - int ok = 1; - worker->had_error = 0; - if (worker->status_ < OK) { -#ifdef WEBP_USE_THREAD - worker->impl_ = (WebPWorkerImpl*)WebPSafeCalloc(1, sizeof(*worker->impl_)); - if (worker->impl_ == NULL) { - return 0; - } - if (pthread_mutex_init(&worker->impl_->mutex_, NULL)) { - goto Error; - } - if (pthread_cond_init(&worker->impl_->condition_, NULL)) { - pthread_mutex_destroy(&worker->impl_->mutex_); - goto Error; - } - pthread_mutex_lock(&worker->impl_->mutex_); - ok = !pthread_create(&worker->impl_->thread_, NULL, ThreadLoop, worker); - if (ok) worker->status_ = OK; - pthread_mutex_unlock(&worker->impl_->mutex_); - if (!ok) { - pthread_mutex_destroy(&worker->impl_->mutex_); - pthread_cond_destroy(&worker->impl_->condition_); - Error: - WebPSafeFree(worker->impl_); - worker->impl_ = NULL; - return 0; - } -#else - worker->status_ = OK; -#endif - } else if (worker->status_ > OK) { - ok = Sync(worker); - } - assert(!ok || (worker->status_ == OK)); - return ok; -} - -static void Execute(WebPWorker* const worker) { - if (worker->hook != NULL) { - worker->had_error |= !worker->hook(worker->data1, worker->data2); - } -} - -static void Launch(WebPWorker* const worker) { -#ifdef WEBP_USE_THREAD - ChangeState(worker, WORK); -#else - Execute(worker); -#endif -} - -static void End(WebPWorker* const worker) { -#ifdef WEBP_USE_THREAD - if (worker->impl_ != NULL) { - ChangeState(worker, NOT_OK); - pthread_join(worker->impl_->thread_, NULL); - pthread_mutex_destroy(&worker->impl_->mutex_); - pthread_cond_destroy(&worker->impl_->condition_); - WebPSafeFree(worker->impl_); - worker->impl_ = NULL; - } -#else - worker->status_ = NOT_OK; - assert(worker->impl_ == NULL); -#endif - assert(worker->status_ == NOT_OK); -} - -//------------------------------------------------------------------------------ - -static WebPWorkerInterface g_worker_interface = { - Init, Reset, Sync, Launch, Execute, End -}; - -int WebPSetWorkerInterface(const WebPWorkerInterface* const winterface) { - if (winterface == NULL || - winterface->Init == NULL || winterface->Reset == NULL || - winterface->Sync == NULL || winterface->Launch == NULL || - winterface->Execute == NULL || winterface->End == NULL) { - return 0; - } - g_worker_interface = *winterface; - return 1; -} - -const WebPWorkerInterface* WebPGetWorkerInterface(void) { - return &g_worker_interface; -} - -//------------------------------------------------------------------------------ diff --git a/thirdparty/libwebp/utils/thread_utils.h b/thirdparty/libwebp/utils/thread_utils.h deleted file mode 100644 index 8408311855..0000000000 --- a/thirdparty/libwebp/utils/thread_utils.h +++ /dev/null @@ -1,93 +0,0 @@ -// Copyright 2011 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Multi-threaded worker -// -// Author: Skal (pascal.massimino@gmail.com) - -#ifndef WEBP_UTILS_THREAD_H_ -#define WEBP_UTILS_THREAD_H_ - -#ifdef HAVE_CONFIG_H -#include "../webp/config.h" -#endif - -#include "../webp/types.h" - -#ifdef __cplusplus -extern "C" { -#endif - -// State of the worker thread object -typedef enum { - NOT_OK = 0, // object is unusable - OK, // ready to work - WORK // busy finishing the current task -} WebPWorkerStatus; - -// Function to be called by the worker thread. Takes two opaque pointers as -// arguments (data1 and data2), and should return false in case of error. -typedef int (*WebPWorkerHook)(void*, void*); - -// Platform-dependent implementation details for the worker. -typedef struct WebPWorkerImpl WebPWorkerImpl; - -// Synchronization object used to launch job in the worker thread -typedef struct { - WebPWorkerImpl* impl_; - WebPWorkerStatus status_; - WebPWorkerHook hook; // hook to call - void* data1; // first argument passed to 'hook' - void* data2; // second argument passed to 'hook' - int had_error; // return value of the last call to 'hook' -} WebPWorker; - -// The interface for all thread-worker related functions. All these functions -// must be implemented. -typedef struct { - // Must be called first, before any other method. - void (*Init)(WebPWorker* const worker); - // Must be called to initialize the object and spawn the thread. Re-entrant. - // Will potentially launch the thread. Returns false in case of error. - int (*Reset)(WebPWorker* const worker); - // Makes sure the previous work is finished. Returns true if worker->had_error - // was not set and no error condition was triggered by the working thread. - int (*Sync)(WebPWorker* const worker); - // Triggers the thread to call hook() with data1 and data2 arguments. These - // hook/data1/data2 values can be changed at any time before calling this - // function, but not be changed afterward until the next call to Sync(). - void (*Launch)(WebPWorker* const worker); - // This function is similar to Launch() except that it calls the - // hook directly instead of using a thread. Convenient to bypass the thread - // mechanism while still using the WebPWorker structs. Sync() must - // still be called afterward (for error reporting). - void (*Execute)(WebPWorker* const worker); - // Kill the thread and terminate the object. To use the object again, one - // must call Reset() again. - void (*End)(WebPWorker* const worker); -} WebPWorkerInterface; - -// Install a new set of threading functions, overriding the defaults. This -// should be done before any workers are started, i.e., before any encoding or -// decoding takes place. The contents of the interface struct are copied, it -// is safe to free the corresponding memory after this call. This function is -// not thread-safe. Return false in case of invalid pointer or methods. -WEBP_EXTERN(int) WebPSetWorkerInterface( - const WebPWorkerInterface* const winterface); - -// Retrieve the currently set thread worker interface. -WEBP_EXTERN(const WebPWorkerInterface*) WebPGetWorkerInterface(void); - -//------------------------------------------------------------------------------ - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif /* WEBP_UTILS_THREAD_H_ */ diff --git a/thirdparty/libwebp/utils/utils.c b/thirdparty/libwebp/utils/utils.c deleted file mode 100644 index 504d924b60..0000000000 --- a/thirdparty/libwebp/utils/utils.c +++ /dev/null @@ -1,330 +0,0 @@ -// Copyright 2012 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Misc. common utility functions -// -// Author: Skal (pascal.massimino@gmail.com) - -#include <stdlib.h> -#include <string.h> // for memcpy() -#include "../webp/decode.h" -#include "../webp/encode.h" -#include "../webp/format_constants.h" // for MAX_PALETTE_SIZE -#include "./utils.h" - -// If PRINT_MEM_INFO is defined, extra info (like total memory used, number of -// alloc/free etc) is printed. For debugging/tuning purpose only (it's slow, -// and not multi-thread safe!). -// An interesting alternative is valgrind's 'massif' tool: -// http://valgrind.org/docs/manual/ms-manual.html -// Here is an example command line: -/* valgrind --tool=massif --massif-out-file=massif.out \ - --stacks=yes --alloc-fn=WebPSafeMalloc --alloc-fn=WebPSafeCalloc - ms_print massif.out -*/ -// In addition: -// * if PRINT_MEM_TRAFFIC is defined, all the details of the malloc/free cycles -// are printed. -// * if MALLOC_FAIL_AT is defined, the global environment variable -// $MALLOC_FAIL_AT is used to simulate a memory error when calloc or malloc -// is called for the nth time. Example usage: -// export MALLOC_FAIL_AT=50 && ./examples/cwebp input.png -// * if MALLOC_LIMIT is defined, the global environment variable $MALLOC_LIMIT -// sets the maximum amount of memory (in bytes) made available to libwebp. -// This can be used to emulate environment with very limited memory. -// Example: export MALLOC_LIMIT=64000000 && ./examples/dwebp picture.webp - -// #define PRINT_MEM_INFO -// #define PRINT_MEM_TRAFFIC -// #define MALLOC_FAIL_AT -// #define MALLOC_LIMIT - -//------------------------------------------------------------------------------ -// Checked memory allocation - -#if defined(PRINT_MEM_INFO) - -#include <stdio.h> - -static int num_malloc_calls = 0; -static int num_calloc_calls = 0; -static int num_free_calls = 0; -static int countdown_to_fail = 0; // 0 = off - -typedef struct MemBlock MemBlock; -struct MemBlock { - void* ptr_; - size_t size_; - MemBlock* next_; -}; - -static MemBlock* all_blocks = NULL; -static size_t total_mem = 0; -static size_t total_mem_allocated = 0; -static size_t high_water_mark = 0; -static size_t mem_limit = 0; - -static int exit_registered = 0; - -static void PrintMemInfo(void) { - fprintf(stderr, "\nMEMORY INFO:\n"); - fprintf(stderr, "num calls to: malloc = %4d\n", num_malloc_calls); - fprintf(stderr, " calloc = %4d\n", num_calloc_calls); - fprintf(stderr, " free = %4d\n", num_free_calls); - fprintf(stderr, "total_mem: %u\n", (uint32_t)total_mem); - fprintf(stderr, "total_mem allocated: %u\n", (uint32_t)total_mem_allocated); - fprintf(stderr, "high-water mark: %u\n", (uint32_t)high_water_mark); - while (all_blocks != NULL) { - MemBlock* b = all_blocks; - all_blocks = b->next_; - free(b); - } -} - -static void Increment(int* const v) { - if (!exit_registered) { -#if defined(MALLOC_FAIL_AT) - { - const char* const malloc_fail_at_str = getenv("MALLOC_FAIL_AT"); - if (malloc_fail_at_str != NULL) { - countdown_to_fail = atoi(malloc_fail_at_str); - } - } -#endif -#if defined(MALLOC_LIMIT) - { - const char* const malloc_limit_str = getenv("MALLOC_LIMIT"); - if (malloc_limit_str != NULL) { - mem_limit = atoi(malloc_limit_str); - } - } -#endif - (void)countdown_to_fail; - (void)mem_limit; - atexit(PrintMemInfo); - exit_registered = 1; - } - ++*v; -} - -static void AddMem(void* ptr, size_t size) { - if (ptr != NULL) { - MemBlock* const b = (MemBlock*)malloc(sizeof(*b)); - if (b == NULL) abort(); - b->next_ = all_blocks; - all_blocks = b; - b->ptr_ = ptr; - b->size_ = size; - total_mem += size; - total_mem_allocated += size; -#if defined(PRINT_MEM_TRAFFIC) -#if defined(MALLOC_FAIL_AT) - fprintf(stderr, "fail-count: %5d [mem=%u]\n", - num_malloc_calls + num_calloc_calls, (uint32_t)total_mem); -#else - fprintf(stderr, "Mem: %u (+%u)\n", (uint32_t)total_mem, (uint32_t)size); -#endif -#endif - if (total_mem > high_water_mark) high_water_mark = total_mem; - } -} - -static void SubMem(void* ptr) { - if (ptr != NULL) { - MemBlock** b = &all_blocks; - // Inefficient search, but that's just for debugging. - while (*b != NULL && (*b)->ptr_ != ptr) b = &(*b)->next_; - if (*b == NULL) { - fprintf(stderr, "Invalid pointer free! (%p)\n", ptr); - abort(); - } - { - MemBlock* const block = *b; - *b = block->next_; - total_mem -= block->size_; -#if defined(PRINT_MEM_TRAFFIC) - fprintf(stderr, "Mem: %u (-%u)\n", - (uint32_t)total_mem, (uint32_t)block->size_); -#endif - free(block); - } - } -} - -#else -#define Increment(v) do {} while (0) -#define AddMem(p, s) do {} while (0) -#define SubMem(p) do {} while (0) -#endif - -// Returns 0 in case of overflow of nmemb * size. -static int CheckSizeArgumentsOverflow(uint64_t nmemb, size_t size) { - const uint64_t total_size = nmemb * size; - if (nmemb == 0) return 1; - if ((uint64_t)size > WEBP_MAX_ALLOCABLE_MEMORY / nmemb) return 0; - if (total_size != (size_t)total_size) return 0; -#if defined(PRINT_MEM_INFO) && defined(MALLOC_FAIL_AT) - if (countdown_to_fail > 0 && --countdown_to_fail == 0) { - return 0; // fake fail! - } -#endif -#if defined(MALLOC_LIMIT) - if (mem_limit > 0) { - const uint64_t new_total_mem = (uint64_t)total_mem + total_size; - if (new_total_mem != (size_t)new_total_mem || - new_total_mem > mem_limit) { - return 0; // fake fail! - } - } -#endif - - return 1; -} - -void* WebPSafeMalloc(uint64_t nmemb, size_t size) { - void* ptr; - Increment(&num_malloc_calls); - if (!CheckSizeArgumentsOverflow(nmemb, size)) return NULL; - assert(nmemb * size > 0); - ptr = malloc((size_t)(nmemb * size)); - AddMem(ptr, (size_t)(nmemb * size)); - return ptr; -} - -void* WebPSafeCalloc(uint64_t nmemb, size_t size) { - void* ptr; - Increment(&num_calloc_calls); - if (!CheckSizeArgumentsOverflow(nmemb, size)) return NULL; - assert(nmemb * size > 0); - ptr = calloc((size_t)nmemb, size); - AddMem(ptr, (size_t)(nmemb * size)); - return ptr; -} - -void WebPSafeFree(void* const ptr) { - if (ptr != NULL) { - Increment(&num_free_calls); - SubMem(ptr); - } - free(ptr); -} - -// Public API function. -void WebPFree(void* ptr) { - free(ptr); -} - -//------------------------------------------------------------------------------ - -void WebPCopyPlane(const uint8_t* src, int src_stride, - uint8_t* dst, int dst_stride, int width, int height) { - assert(src != NULL && dst != NULL); - assert(src_stride >= width && dst_stride >= width); - while (height-- > 0) { - memcpy(dst, src, width); - src += src_stride; - dst += dst_stride; - } -} - -void WebPCopyPixels(const WebPPicture* const src, WebPPicture* const dst) { - assert(src != NULL && dst != NULL); - assert(src->width == dst->width && src->height == dst->height); - assert(src->use_argb && dst->use_argb); - WebPCopyPlane((uint8_t*)src->argb, 4 * src->argb_stride, (uint8_t*)dst->argb, - 4 * dst->argb_stride, 4 * src->width, src->height); -} - -//------------------------------------------------------------------------------ - -#define COLOR_HASH_SIZE (MAX_PALETTE_SIZE * 4) -#define COLOR_HASH_RIGHT_SHIFT 22 // 32 - log2(COLOR_HASH_SIZE). - -int WebPGetColorPalette(const WebPPicture* const pic, uint32_t* const palette) { - int i; - int x, y; - int num_colors = 0; - uint8_t in_use[COLOR_HASH_SIZE] = { 0 }; - uint32_t colors[COLOR_HASH_SIZE]; - static const uint64_t kHashMul = 0x1e35a7bdull; - const uint32_t* argb = pic->argb; - const int width = pic->width; - const int height = pic->height; - uint32_t last_pix = ~argb[0]; // so we're sure that last_pix != argb[0] - assert(pic != NULL); - assert(pic->use_argb); - - for (y = 0; y < height; ++y) { - for (x = 0; x < width; ++x) { - int key; - if (argb[x] == last_pix) { - continue; - } - last_pix = argb[x]; - key = ((last_pix * kHashMul) & 0xffffffffu) >> COLOR_HASH_RIGHT_SHIFT; - while (1) { - if (!in_use[key]) { - colors[key] = last_pix; - in_use[key] = 1; - ++num_colors; - if (num_colors > MAX_PALETTE_SIZE) { - return MAX_PALETTE_SIZE + 1; // Exact count not needed. - } - break; - } else if (colors[key] == last_pix) { - break; // The color is already there. - } else { - // Some other color sits here, so do linear conflict resolution. - ++key; - key &= (COLOR_HASH_SIZE - 1); // Key mask. - } - } - } - argb += pic->argb_stride; - } - - if (palette != NULL) { // Fill the colors into palette. - num_colors = 0; - for (i = 0; i < COLOR_HASH_SIZE; ++i) { - if (in_use[i]) { - palette[num_colors] = colors[i]; - ++num_colors; - } - } - } - return num_colors; -} - -#undef COLOR_HASH_SIZE -#undef COLOR_HASH_RIGHT_SHIFT - -//------------------------------------------------------------------------------ - -#if defined(WEBP_NEED_LOG_TABLE_8BIT) -const uint8_t WebPLogTable8bit[256] = { // 31 ^ clz(i) - 0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, - 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, - 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, - 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, - 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, - 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, - 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, - 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, - 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 -}; -#endif - -//------------------------------------------------------------------------------ diff --git a/thirdparty/libwebp/utils/utils.h b/thirdparty/libwebp/utils/utils.h deleted file mode 100644 index 3ab459050a..0000000000 --- a/thirdparty/libwebp/utils/utils.h +++ /dev/null @@ -1,178 +0,0 @@ -// Copyright 2012 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING file in the root of the source -// tree. An additional intellectual property rights grant can be found -// in the file PATENTS. All contributing project authors may -// be found in the AUTHORS file in the root of the source tree. -// ----------------------------------------------------------------------------- -// -// Misc. common utility functions -// -// Authors: Skal (pascal.massimino@gmail.com) -// Urvang (urvang@google.com) - -#ifndef WEBP_UTILS_UTILS_H_ -#define WEBP_UTILS_UTILS_H_ - -#ifdef HAVE_CONFIG_H -#include "../webp/config.h" -#endif - -#include <assert.h> -#include <limits.h> - -#include "../dsp/dsp.h" -#include "../webp/types.h" - -#ifdef __cplusplus -extern "C" { -#endif - -//------------------------------------------------------------------------------ -// Memory allocation - -// This is the maximum memory amount that libwebp will ever try to allocate. -#ifndef WEBP_MAX_ALLOCABLE_MEMORY -#if SIZE_MAX > (1ULL << 34) -#define WEBP_MAX_ALLOCABLE_MEMORY (1ULL << 34) -#else -// For 32-bit targets keep this below INT_MAX to avoid valgrind warnings. -#define WEBP_MAX_ALLOCABLE_MEMORY ((1ULL << 31) - (1 << 16)) -#endif -#endif // WEBP_MAX_ALLOCABLE_MEMORY - -// size-checking safe malloc/calloc: verify that the requested size is not too -// large, or return NULL. You don't need to call these for constructs like -// malloc(sizeof(foo)), but only if there's picture-dependent size involved -// somewhere (like: malloc(num_pixels * sizeof(*something))). That's why this -// safe malloc() borrows the signature from calloc(), pointing at the dangerous -// underlying multiply involved. -WEBP_EXTERN(void*) WebPSafeMalloc(uint64_t nmemb, size_t size); -// Note that WebPSafeCalloc() expects the second argument type to be 'size_t' -// in order to favor the "calloc(num_foo, sizeof(foo))" pattern. -WEBP_EXTERN(void*) WebPSafeCalloc(uint64_t nmemb, size_t size); - -// Companion deallocation function to the above allocations. -WEBP_EXTERN(void) WebPSafeFree(void* const ptr); - -//------------------------------------------------------------------------------ -// Alignment - -#define WEBP_ALIGN_CST 31 -#define WEBP_ALIGN(PTR) (((uintptr_t)(PTR) + WEBP_ALIGN_CST) & ~WEBP_ALIGN_CST) - -#include <string.h> -// memcpy() is the safe way of moving potentially unaligned 32b memory. -static WEBP_INLINE uint32_t WebPMemToUint32(const uint8_t* const ptr) { - uint32_t A; - memcpy(&A, (const int*)ptr, sizeof(A)); - return A; -} -static WEBP_INLINE void WebPUint32ToMem(uint8_t* const ptr, uint32_t val) { - memcpy(ptr, &val, sizeof(val)); -} - -//------------------------------------------------------------------------------ -// Reading/writing data. - -// Read 16, 24 or 32 bits stored in little-endian order. -static WEBP_INLINE int GetLE16(const uint8_t* const data) { - return (int)(data[0] << 0) | (data[1] << 8); -} - -static WEBP_INLINE int GetLE24(const uint8_t* const data) { - return GetLE16(data) | (data[2] << 16); -} - -static WEBP_INLINE uint32_t GetLE32(const uint8_t* const data) { - return GetLE16(data) | ((uint32_t)GetLE16(data + 2) << 16); -} - -// Store 16, 24 or 32 bits in little-endian order. -static WEBP_INLINE void PutLE16(uint8_t* const data, int val) { - assert(val < (1 << 16)); - data[0] = (val >> 0); - data[1] = (val >> 8); -} - -static WEBP_INLINE void PutLE24(uint8_t* const data, int val) { - assert(val < (1 << 24)); - PutLE16(data, val & 0xffff); - data[2] = (val >> 16); -} - -static WEBP_INLINE void PutLE32(uint8_t* const data, uint32_t val) { - PutLE16(data, (int)(val & 0xffff)); - PutLE16(data + 2, (int)(val >> 16)); -} - -// Returns 31 ^ clz(n) = log2(n). This is the default C-implementation, either -// based on table or not. Can be used as fallback if clz() is not available. -#define WEBP_NEED_LOG_TABLE_8BIT -extern const uint8_t WebPLogTable8bit[256]; -static WEBP_INLINE int WebPLog2FloorC(uint32_t n) { - int log = 0; - while (n >= 256) { - log += 8; - n >>= 8; - } - return log + WebPLogTable8bit[n]; -} - -// Returns (int)floor(log2(n)). n must be > 0. -// use GNU builtins where available. -#if defined(__GNUC__) && \ - ((__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || __GNUC__ >= 4) -static WEBP_INLINE int BitsLog2Floor(uint32_t n) { - return 31 ^ __builtin_clz(n); -} -#elif defined(_MSC_VER) && _MSC_VER > 1310 && \ - (defined(_M_X64) || defined(_M_IX86)) -#include <intrin.h> -#pragma intrinsic(_BitScanReverse) - -static WEBP_INLINE int BitsLog2Floor(uint32_t n) { - unsigned long first_set_bit; - _BitScanReverse(&first_set_bit, n); - return first_set_bit; -} -#else // default: use the C-version. -static WEBP_INLINE int BitsLog2Floor(uint32_t n) { return WebPLog2FloorC(n); } -#endif - -//------------------------------------------------------------------------------ -// Pixel copying. - -struct WebPPicture; - -// Copy width x height pixels from 'src' to 'dst' honoring the strides. -WEBP_EXTERN(void) WebPCopyPlane(const uint8_t* src, int src_stride, - uint8_t* dst, int dst_stride, - int width, int height); - -// Copy ARGB pixels from 'src' to 'dst' honoring strides. 'src' and 'dst' are -// assumed to be already allocated and using ARGB data. -WEBP_EXTERN(void) WebPCopyPixels(const struct WebPPicture* const src, - struct WebPPicture* const dst); - -//------------------------------------------------------------------------------ -// Unique colors. - -// Returns count of unique colors in 'pic', assuming pic->use_argb is true. -// If the unique color count is more than MAX_PALETTE_SIZE, returns -// MAX_PALETTE_SIZE+1. -// If 'palette' is not NULL and number of unique colors is less than or equal to -// MAX_PALETTE_SIZE, also outputs the actual unique colors into 'palette'. -// Note: 'palette' is assumed to be an array already allocated with at least -// MAX_PALETTE_SIZE elements. -WEBP_EXTERN(int) WebPGetColorPalette(const struct WebPPicture* const pic, - uint32_t* const palette); - -//------------------------------------------------------------------------------ - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif /* WEBP_UTILS_UTILS_H_ */ |