/* * Copyright (c) 2022 Caleb Etemesi <etemesicaleb@gmail.com> * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* * Copyright 2019 - 2021, Osamu Watanabe * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * 3. Neither the name of the copyright holder nor the names of its contributors * may be used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <stdint.h> #include "libavutil/attributes.h" #include "libavutil/common.h" #include "libavutil/avassert.h" #include "jpeg2000htdec.h" #include "jpeg2000.h" #include "jpeg2000dec.h" #define J2K_Q1 0 #define J2K_Q2 1 #define HT_SHIFT_SIGMA 0 #define HT_SHIFT_SCAN 4 #define HT_SHIFT_REF 3 #define HT_SHIFT_REF_IND 2 /* See Rec. ITU-T T.800, Table 2 */ const static uint8_t mel_e[13] = { 0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 4, 5 }; static const uint16_t dec_cxt_vlc_table1[1024]; static const uint16_t dec_cxt_vlc_table0[1024]; typedef struct StateVars { int32_t pos; uint32_t bits; uint32_t tmp; uint32_t last; uint8_t bits_left; uint64_t bit_buf; } StateVars; typedef struct MelDecoderState { uint8_t k; uint8_t run; uint8_t one; } MelDecoderState; /** * Given a precomputed c, checks whether n % d == 0. c is precomputed from d * using precompute_c(). */ av_always_inline static uint32_t is_divisible(uint32_t n, uint64_t c) { return n * c <= c - 1; } /** * Precompute the number c used by is_divisible(). */ av_always_inline static uint64_t precompute_c(uint32_t d) { return 1 + (0xffffffffffffffffull / d); } static void jpeg2000_init_zero(StateVars *s) { s->bits_left = 0; s->bit_buf = 0; s->tmp = 0; s->bits = 0; s->pos = 0; s->last = 0; } static void jpeg2000_init_mel(StateVars *s, uint32_t Pcup) { jpeg2000_init_zero(s); s->pos = Pcup; } static void jpeg2000_init_mag_ref(StateVars *s, uint32_t Lref) { s->pos = Lref - 2; s->bits = 0; s->last = 0xFF; s->tmp = 0; s->bits_left = 0; s->bit_buf = 0; } static void jpeg2000_init_mel_decoder(MelDecoderState *mel_state) { mel_state->k = 0; mel_state->run = 0; mel_state->one = 0; } /** * Refill the buffer backwards in little endian while skipping over stuffing * bits. Stuffing bits are those that appear in the position of any byte whose * LSBs are all 1's if the last consumed byte was larger than 0x8F. */ static int jpeg2000_bitbuf_refill_backwards(StateVars *buffer, const uint8_t *array) { uint64_t tmp = 0; int32_t position = buffer->pos - 4; uint32_t new_bits = 32; if (buffer->bits_left >= 32) return 0; // enough data, no need to pull in more bits /** * Unstuff bits. Load a temporary byte, which precedes the position we * currently at, to ensure that we can also un-stuff if the stuffed bit is * the bottom most bits. */ for(int i = FFMAX(0, position + 1); i <= buffer->pos + 1; i++) tmp = 256*tmp + array[i]; if ((tmp & 0x7FFF000000) > 0x7F8F000000) { tmp &= 0x7FFFFFFFFF; new_bits--; } if ((tmp & 0x007FFF0000) > 0x007F8F0000) { tmp = (tmp & 0x007FFFFFFF) + ((tmp & 0xFF00000000) >> 1); new_bits--; } if ((tmp & 0x00007FFF00) > 0x00007F8F00) { tmp = (tmp & 0x00007FFFFF) + ((tmp & 0xFFFF000000) >> 1); new_bits--; } if ((tmp & 0x0000007FFF) > 0x0000007F8F) { tmp = (tmp & 0x0000007FFF) + ((tmp & 0xFFFFFF0000) >> 1); new_bits--; } tmp >>= 8; // Remove temporary byte loaded /* Add bits to the MSB of the bit buffer */ buffer->bit_buf |= tmp << buffer->bits_left; buffer->bits_left += new_bits; buffer->pos = FFMAX(0, position); return 0; } /** * Refill the bit-buffer reading new bits going forward * in the stream while skipping over stuffed bits. */ static void jpeg2000_bitbuf_refill_forward(StateVars *buffer, const uint8_t *array, uint32_t length) { while (buffer->bits_left < 32) { buffer->tmp = 0xFF; buffer->bits = (buffer->last == 0xFF) ? 7 : 8; if (buffer->pos <= length) { buffer->tmp = array[buffer->pos]; buffer->pos += 1; buffer->last = buffer->tmp; } buffer->bit_buf |= ((uint64_t) buffer->tmp) << buffer->bits_left; buffer->bits_left += buffer->bits; } } /** * Drops bits from lower bits in the bit buffer. buf contains the bit buffers. * nbits is the number of bits to remove. */ av_always_inline static void jpeg2000_bitbuf_drop_bits_lsb(StateVars *buf, uint8_t nbits) { av_assert2(buf->bits_left >= nbits); // cannot read more bits than available buf->bit_buf >>= nbits; buf->bits_left -= nbits; } /** * Get bits from the bit buffer reading them from the least significant bits * moving to the most significant bits. In case there are fewer bits, refill * from buf moving backwards. */ av_always_inline static uint64_t jpeg2000_bitbuf_get_bits_lsb(StateVars *bit_stream, uint8_t nbits, const uint8_t *buf) { uint64_t bits; uint64_t mask = (1ull << nbits) - 1; if (bit_stream->bits_left < nbits) jpeg2000_bitbuf_refill_backwards(bit_stream, buf); bits = bit_stream->bit_buf & mask; jpeg2000_bitbuf_drop_bits_lsb(bit_stream, nbits); return bits; } /** * Get bits from the bit buffer reading them from the least significant bits * moving to the most significant bits. In case there are fewer bits, refill from * buf moving forward. */ av_always_inline static uint64_t jpeg2000_bitbuf_get_bits_lsb_forward(StateVars *bit_stream, uint8_t nbits, const uint8_t *buf, uint32_t length) { uint64_t bits; uint64_t mask = (1ull << nbits) - 1; if (bit_stream->bits_left <= nbits) jpeg2000_bitbuf_refill_forward(bit_stream, buf, length); bits = bit_stream->bit_buf & mask; jpeg2000_bitbuf_drop_bits_lsb(bit_stream, nbits); return bits; } /** * Look ahead bit buffer without discarding bits. */ av_always_inline static uint64_t jpeg2000_bitbuf_peek_bits_lsb(StateVars *stream, uint8_t nbits) { uint64_t mask = (1ull << nbits) - 1; return stream->bit_buf & mask; } static void jpeg2000_init_vlc(StateVars *s, uint32_t Lcup, uint32_t Pcup, const uint8_t *Dcup) { s->bits_left = 0; s->bit_buf = 0; s->pos = Lcup - 2 - Pcup; s->last = Dcup[Lcup - 2]; s->tmp = (s->last) >> 4; s->bits = ((s->tmp & 7) < 7) ? 4 : 3; jpeg2000_bitbuf_refill_backwards(s, Dcup + Pcup); jpeg2000_bitbuf_drop_bits_lsb(s, 4); } /** * Decode prefix codes for VLC segment. See Rec. ITU-T T.814, 7.3.5. */ av_always_inline static int jpeg2000_decode_ctx_vlc(const Jpeg2000DecoderContext *s, StateVars *vlc_stream, const uint16_t *table, const uint8_t *Dcup, uint8_t *sig_pat, uint8_t *res_off, uint8_t *emb_pat_k, uint8_t *emb_pat_1, uint8_t pos, uint32_t Pcup, uint16_t context) { uint32_t value; uint8_t len; uint64_t index; uint64_t code_word; jpeg2000_bitbuf_refill_backwards(vlc_stream, Dcup + Pcup); code_word = vlc_stream->bit_buf & 0x7f; index = code_word + (context << 7); av_assert0(index < 1024); // The CxtVLC table has 1024 entries. value = table[index]; len = (value & 0x000F) >> 1; res_off[pos] = (uint8_t) (value & 1); sig_pat[pos] = (uint8_t) ((value & 0x00F0) >> 4); emb_pat_k[pos] = (uint8_t) ((value & 0x0F00) >> 8); emb_pat_1[pos] = (uint8_t) ((value & 0xF000) >> 12); jpeg2000_bitbuf_drop_bits_lsb(vlc_stream, len); return 0; } /** * Decode variable length u-vlc prefix. See decodeUPrefix procedure at Rec. * ITU-T T.814, 7.3.6. */ av_always_inline static uint8_t vlc_decode_u_prefix(StateVars *vlc_stream, const uint8_t *refill_array) { static const uint8_t return_value[8] = { 5, 1, 2, 1, 3, 1, 2, 1 }; static const uint8_t drop_bits[8] = { 3, 1, 2, 1, 3, 1, 2, 1 }; uint8_t bits; if (vlc_stream->bits_left < 3) jpeg2000_bitbuf_refill_backwards(vlc_stream, refill_array); bits = jpeg2000_bitbuf_peek_bits_lsb(vlc_stream, 3); jpeg2000_bitbuf_drop_bits_lsb(vlc_stream, drop_bits[bits]); return return_value[bits]; } /** * Decode variable length u-vlc suffix. See decodeUSuffix procedure at Rec. * ITU-T T.814, 7.3.6. */ av_always_inline static uint8_t vlc_decode_u_suffix(StateVars *vlc_stream, uint8_t suffix, const uint8_t *refill_array) { static const int mask[] = { 1, 31 }; static const int drop_bits[] = { 1, 5 }; uint8_t bits; int cond = suffix != 3; if (suffix < 3) return 0; if (vlc_stream->bits_left < 5) jpeg2000_bitbuf_refill_backwards(vlc_stream, refill_array); bits = jpeg2000_bitbuf_peek_bits_lsb(vlc_stream, 5); jpeg2000_bitbuf_drop_bits_lsb(vlc_stream, drop_bits[cond]); return bits & mask[cond]; } /** * Decode u-vlc extension values. See decodeUExtension procedure at Rec. ITU-T * T.814, 7.3.6. */ av_always_inline static uint8_t vlc_decode_u_extension(StateVars *vlc_stream, uint8_t suffix, const uint8_t *refill_array) { return jpeg2000_bitbuf_get_bits_lsb(vlc_stream, 4 * (suffix >= 28), refill_array); } /** * Magnitude and Sign decode procedures. See decodeMagSgnValue procedure at Rec. * ITU-T T.814, 7.3.8. */ av_always_inline static int32_t jpeg2000_decode_mag_sgn(StateVars *mag_sgn_stream, int32_t m_n, int32_t i_n, const uint8_t *buf, uint32_t length) { int32_t val = 0; if (m_n > 0) { val = jpeg2000_bitbuf_get_bits_lsb_forward(mag_sgn_stream,m_n,buf,length); val += (i_n << m_n); } return val; } av_always_inline static void recover_mag_sgn(StateVars *mag_sgn, uint8_t pos, uint16_t q, int32_t m_n[2], int32_t known_1[2], const uint8_t emb_pat_1[2], int32_t v[2][4], int32_t m[2][4], uint8_t *E, uint32_t *mu_n, const uint8_t *Dcup, uint32_t Pcup, uint32_t pLSB) { for (int i = 0; i < 4; i++) { int32_t n = 4 * q + i; m_n[pos] = m[pos][i]; known_1[pos] = (emb_pat_1[pos] >> i) & 1; v[pos][i] = jpeg2000_decode_mag_sgn(mag_sgn, m_n[pos], known_1[pos], Dcup, Pcup); if (m_n[pos] != 0) { E[n] = 32 - ff_clz(v[pos][i] | 1); mu_n[n] = (v[pos][i] >> 1) + 1; mu_n[n] <<= pLSB; mu_n[n] |= ((uint32_t) (v[pos][i] & 1)) << 31; // sign bit. } } } static int jpeg2000_import_bit(StateVars *stream, const uint8_t *array, uint32_t length) { int cond = stream->pos <= length; int pos = FFMIN(stream->pos, length); if (stream->bits == 0) { stream->bits = (stream->tmp == 0xFF) ? 7 : 8; stream->pos += cond; stream->tmp = cond ? array[pos] : 0xFF; } stream->bits -= 1; return (stream->tmp >> stream->bits) & 1; } static int jpeg2000_peek_bit(StateVars *stream, const uint8_t *array, uint32_t length) { if (stream->bits == 0) { int cond = stream->pos <= length; int pos = FFMIN(stream->pos, length); stream->bits = (stream->tmp == 0xFF) ? 7 : 8; stream->pos += cond; stream->tmp = cond ? array[pos] : 0xFF; } return (stream->tmp >> stream->bits) & 1; } static int jpeg2000_decode_mel_sym(MelDecoderState *mel_state, StateVars *mel_stream, const uint8_t *Dcup, uint32_t Lcup) { if (mel_state->run == 0 && mel_state->one == 0) { uint8_t eval; uint8_t bit; eval = mel_e[mel_state->k]; bit = jpeg2000_import_bit(mel_stream, Dcup, Lcup); if (bit == 1) { mel_state->run = 1 << eval; mel_state->k = FFMIN(12, mel_state->k + 1); } else { mel_state->run = 0; while (eval > 0) { bit = jpeg2000_import_bit(mel_stream, Dcup, Lcup); mel_state->run = (2 * (mel_state->run)) + bit; eval -= 1; } mel_state->k = FFMAX(0, mel_state->k - 1); mel_state->one = 1; } } if (mel_state->run > 0) { mel_state->run -= 1; return 0; } else { mel_state->one = 0; return 1; } } /** * Magref decoding procedures. */ av_always_inline static int jpeg2000_import_magref_bit(StateVars *stream, const uint8_t *array, uint32_t length) { return jpeg2000_bitbuf_get_bits_lsb(stream, 1, array); } /** * Signal EMB decode. */ static int jpeg2000_decode_sig_emb(const Jpeg2000DecoderContext *s, MelDecoderState *mel_state, StateVars *mel_stream, StateVars *vlc_stream, const uint16_t *vlc_table, const uint8_t *Dcup, uint8_t *sig_pat, uint8_t *res_off, uint8_t *emb_pat_k, uint8_t *emb_pat_1, uint8_t pos, uint16_t context, uint32_t Lcup, uint32_t Pcup) { if (context == 0) { uint8_t sym; sym = jpeg2000_decode_mel_sym(mel_state, mel_stream, Dcup, Lcup); if (sym == 0) { sig_pat[pos] = 0; res_off[pos] = 0; emb_pat_k[pos] = 0; emb_pat_1[pos] = 0; return 0; } } return jpeg2000_decode_ctx_vlc(s, vlc_stream, vlc_table, Dcup, sig_pat, res_off, emb_pat_k, emb_pat_1, pos, Pcup, context); } av_always_inline static int jpeg2000_get_state(int x1, int x2, int width, int shift_by, const uint8_t *block_states) { return (block_states[(x1 + 1) * (width + 2) + (x2 + 1)] >> shift_by) & 1; } av_always_inline static void jpeg2000_modify_state(int x1, int x2, int width, int value, uint8_t *block_states) { block_states[(x1 + 1) * (width + 2) + (x2 + 1)] |= value; } av_always_inline static int jpeg2000_decode_ht_cleanup_segment(const Jpeg2000DecoderContext *s, Jpeg2000Cblk *cblk, Jpeg2000T1Context *t1, MelDecoderState *mel_state, StateVars *mel_stream, StateVars *vlc_stream, StateVars *mag_sgn_stream, const uint8_t *Dcup, uint32_t Lcup, uint32_t Pcup, uint8_t pLSB, int width, int height, int32_t *sample_buf, uint8_t *block_states) { uint16_t q = 0; // Represents current quad position uint16_t q1, q2; uint16_t context1, context2; uint16_t context = 0; uint8_t sig_pat[2] = { 0 }; // significance pattern uint8_t res_off[2] = { 0 }; // residual offset uint8_t emb_pat_k[2] = { 0 }; // exponent Max Bound pattern K uint8_t emb_pat_1[2] = { 0 }; // exponent Max Bound pattern 1 uint8_t gamma[2] = { 0 }; uint8_t E_n[2] = { 0 }; uint8_t E_ne[2] = { 0 }; uint8_t E_nw[2] = { 0 }; uint8_t E_nf[2] = { 0 }; uint8_t max_e[2] = { 0 }; uint8_t u_pfx[2] = { 0 }; uint8_t u_sfx[2] = { 0 }; uint8_t u_ext[2] = { 0 }; int32_t u[2] = { 0 }; int32_t U[2] = { 0 }; // exponent bound int32_t m_n[2] = { 0 }; int32_t known_1[2] = { 0 }; int32_t m[2][4] = { 0 }; int32_t v[2][4] = { 0 }; uint8_t kappa[2] = { 1, 1 }; int ret = 0; int sp; uint64_t c; uint8_t *sigma; uint32_t *mu; const uint8_t *vlc_buf = Dcup + Pcup; /* convert to raster-scan */ const uint16_t is_border_x = width % 2; const uint16_t is_border_y = height % 2; const uint16_t quad_width = ff_jpeg2000_ceildivpow2(width, 1); const uint16_t quad_height = ff_jpeg2000_ceildivpow2(height, 1); size_t buf_size = 4 * quad_width * quad_height; uint8_t *sigma_n = av_calloc(buf_size, sizeof(uint8_t)); uint8_t *E = av_calloc(buf_size, sizeof(uint8_t)); uint32_t *mu_n = av_calloc(buf_size, sizeof(uint32_t)); if (!sigma_n || !E || !mu_n) { ret = AVERROR(ENOMEM); goto free; } sigma = sigma_n; mu = mu_n; while (q < quad_width - 1) { q1 = q; q2 = q1 + 1; if ((ret = jpeg2000_decode_sig_emb(s, mel_state, mel_stream, vlc_stream, dec_cxt_vlc_table0, Dcup, sig_pat, res_off, emb_pat_k, emb_pat_1, J2K_Q1, context, Lcup, Pcup)) < 0) goto free; for (int i = 0; i < 4; i++) sigma_n[4 * q1 + i] = (sig_pat[J2K_Q1] >> i) & 1; /* calculate context */ context = sigma_n[4 * q1]; // f context |= sigma_n[4 * q1 + 1]; // sf context += sigma_n[4 * q1 + 2] << 1; // w << 1 context += sigma_n[4 * q1 + 3] << 2; if ((ret = jpeg2000_decode_sig_emb(s, mel_state, mel_stream, vlc_stream, dec_cxt_vlc_table0, Dcup, sig_pat, res_off, emb_pat_k, emb_pat_1, J2K_Q2, context, Lcup, Pcup)) < 0) goto free; for (int i = 0; i < 4; i++) sigma_n[4 * q2 + i] = (sig_pat[J2K_Q2] >> i) & 1; /* calculate context for the next quad */ context = sigma_n[4 * q2]; // f context |= sigma_n[4 * q2 + 1]; // sf context += sigma_n[4 * q2 + 2] << 1; // w << 1 context += sigma_n[4 * q2 + 3] << 2; // sw << 2 u[0] = 0; u[1] = 0; jpeg2000_bitbuf_refill_backwards(vlc_stream, vlc_buf); if (res_off[J2K_Q1] == 1 && res_off[J2K_Q2] == 1) { if (jpeg2000_decode_mel_sym(mel_state, mel_stream, Dcup, Lcup) == 1) { u_pfx[J2K_Q1] = vlc_decode_u_prefix(vlc_stream, vlc_buf); u_pfx[J2K_Q2] = vlc_decode_u_prefix(vlc_stream, vlc_buf); u_sfx[J2K_Q1] = vlc_decode_u_suffix(vlc_stream, u_pfx[J2K_Q1], vlc_buf); u_sfx[J2K_Q2] = vlc_decode_u_suffix(vlc_stream, u_pfx[J2K_Q2], vlc_buf); u_ext[J2K_Q1] = vlc_decode_u_extension(vlc_stream, u_sfx[J2K_Q1], vlc_buf); u_ext[J2K_Q2] = vlc_decode_u_extension(vlc_stream, u_sfx[J2K_Q2], vlc_buf); u[J2K_Q1] = 2 + u_pfx[J2K_Q1] + u_sfx[J2K_Q1] + (u_ext[J2K_Q1] * 4); u[J2K_Q2] = 2 + u_pfx[J2K_Q2] + u_sfx[J2K_Q2] + (u_ext[J2K_Q2] * 4); } else { u_pfx[J2K_Q1] = vlc_decode_u_prefix(vlc_stream, vlc_buf); if (u_pfx[J2K_Q1] > 2) { u[J2K_Q2] = jpeg2000_bitbuf_get_bits_lsb(vlc_stream, 1, vlc_buf) + 1; u_sfx[J2K_Q1] = vlc_decode_u_suffix(vlc_stream, u_pfx[J2K_Q1], vlc_buf); u_ext[J2K_Q1] = vlc_decode_u_extension(vlc_stream, u_sfx[J2K_Q1], vlc_buf); } else { u_pfx[J2K_Q2] = vlc_decode_u_prefix(vlc_stream, vlc_buf); u_sfx[J2K_Q1] = vlc_decode_u_suffix(vlc_stream, u_pfx[J2K_Q1], vlc_buf); u_sfx[J2K_Q2] = vlc_decode_u_suffix(vlc_stream, u_pfx[J2K_Q2], vlc_buf); u_ext[J2K_Q1] = vlc_decode_u_extension(vlc_stream, u_sfx[J2K_Q1], vlc_buf); u_ext[J2K_Q2] = vlc_decode_u_extension(vlc_stream, u_sfx[J2K_Q2], vlc_buf); u[J2K_Q2] = u_pfx[J2K_Q2] + u_sfx[J2K_Q2] + (u_ext[J2K_Q2] * 4); } /* See Rec. ITU-T T.814, 7.3.6(3) */ u[J2K_Q1] = u_pfx[J2K_Q1] + u_sfx[J2K_Q1] + (u_ext[J2K_Q1] * 4); } } else if (res_off[J2K_Q1] == 1 || res_off[J2K_Q2] == 1) { uint8_t pos = res_off[J2K_Q1] == 1 ? 0 : 1; u_pfx[pos] = vlc_decode_u_prefix(vlc_stream, vlc_buf); u_sfx[pos] = vlc_decode_u_suffix(vlc_stream, u_pfx[pos], vlc_buf); u_ext[pos] = vlc_decode_u_extension(vlc_stream, u_sfx[pos], vlc_buf); u[pos] = u_pfx[pos] + u_sfx[pos] + (u_ext[pos] * 4); } U[J2K_Q1] = kappa[J2K_Q1] + u[J2K_Q1]; U[J2K_Q2] = kappa[J2K_Q2] + u[J2K_Q2]; for (int i = 0; i < 4; i++) { m[J2K_Q1][i] = sigma_n[4 * q1 + i] * U[J2K_Q1] - ((emb_pat_k[J2K_Q1] >> i) & 1); m[J2K_Q2][i] = sigma_n[4 * q2 + i] * U[J2K_Q2] - ((emb_pat_k[J2K_Q2] >> i) & 1); } recover_mag_sgn(mag_sgn_stream, J2K_Q1, q1, m_n, known_1, emb_pat_1, v, m, E, mu_n, Dcup, Pcup, pLSB); recover_mag_sgn(mag_sgn_stream, J2K_Q2, q2, m_n, known_1, emb_pat_1, v, m, E, mu_n, Dcup, Pcup, pLSB); q += 2; // Move to the next quad pair } if (quad_width % 2 == 1) { q1 = q; if ((ret = jpeg2000_decode_sig_emb(s, mel_state, mel_stream, vlc_stream, dec_cxt_vlc_table0, Dcup, sig_pat, res_off, emb_pat_k, emb_pat_1, J2K_Q1, context, Lcup, Pcup)) < 0) goto free; for (int i = 0; i < 4; i++) sigma_n[4 * q1 + i] = (sig_pat[J2K_Q1] >> i) & 1; u[J2K_Q1] = 0; if (res_off[J2K_Q1] == 1) { u_pfx[J2K_Q1] = vlc_decode_u_prefix(vlc_stream, vlc_buf); u_sfx[J2K_Q1] = vlc_decode_u_suffix(vlc_stream, u_pfx[J2K_Q1], vlc_buf); u_ext[J2K_Q1] = vlc_decode_u_extension(vlc_stream, u_sfx[J2K_Q1], vlc_buf); u[J2K_Q1] = u_pfx[J2K_Q1] + u_sfx[J2K_Q1] + (u_ext[J2K_Q1] * 4); } U[J2K_Q1] = kappa[J2K_Q1] + u[J2K_Q1]; for (int i = 0; i < 4; i++) m[J2K_Q1][i] = sigma_n[4 * q1 + i] * U[J2K_Q1] - ((emb_pat_k[J2K_Q1] >> i) & 1); recover_mag_sgn(mag_sgn_stream, J2K_Q1, q1, m_n, known_1, emb_pat_1, v, m, E, mu_n, Dcup, Pcup, pLSB); q++; // move to next quad pair } /** * Initial line pair end. As an optimization, we can replace modulo * operations with checking if a number is divisible , since that's the only * thing we need. This is paired with is_divisible. Credits to Daniel Lemire * blog post [1]. * * [1] * https://lemire.me/blog/2019/02/08/faster-remainders-when-the-divisor-is-a-constant-beating-compilers-and-libdivide/ * * It's UB on zero, but the spec doesn't allow a quad being zero, so we * error out early in case that's the case. */ c = precompute_c(quad_width); for (int row = 1; row < quad_height; row++) { while ((q - (row * quad_width)) < quad_width - 1 && q < (quad_height * quad_width)) { q1 = q; q2 = q + 1; context1 = sigma_n[4 * (q1 - quad_width) + 1]; context1 += sigma_n[4 * (q1 - quad_width) + 3] << 2; // ne if (!is_divisible(q1, c)) { context1 |= sigma_n[4 * (q1 - quad_width) - 1]; // nw context1 += (sigma_n[4 * q1 - 1] | sigma_n[4 * q1 - 2]) << 1; // sw | q } if (!is_divisible(q1 + 1, c)) context1 |= sigma_n[4 * (q1 - quad_width) + 5] << 2; if ((ret = jpeg2000_decode_sig_emb(s, mel_state, mel_stream, vlc_stream, dec_cxt_vlc_table1, Dcup, sig_pat, res_off, emb_pat_k, emb_pat_1, J2K_Q1, context1, Lcup, Pcup)) < 0) goto free; for (int i = 0; i < 4; i++) sigma_n[4 * q1 + i] = (sig_pat[J2K_Q1] >> i) & 1; context2 = sigma_n[4 * (q2 - quad_width) + 1]; context2 += sigma_n[4 * (q2 - quad_width) + 3] << 2; if (!is_divisible(q2, c)) { context2 |= sigma_n[4 * (q2 - quad_width) - 1]; context2 += (sigma_n[4 * q2 - 1] | sigma_n[4 * q2 - 2]) << 1; } if (!is_divisible(q2 + 1, c)) context2 |= sigma_n[4 * (q2 - quad_width) + 5] << 2; if ((ret = jpeg2000_decode_sig_emb(s, mel_state, mel_stream, vlc_stream, dec_cxt_vlc_table1, Dcup, sig_pat, res_off, emb_pat_k, emb_pat_1, J2K_Q2, context2, Lcup, Pcup)) < 0) goto free; for (int i = 0; i < 4; i++) sigma_n[4 * q2 + i] = (sig_pat[J2K_Q2] >> i) & 1; u[J2K_Q1] = 0; u[J2K_Q2] = 0; jpeg2000_bitbuf_refill_backwards(vlc_stream, vlc_buf); if (res_off[J2K_Q1] == 1 && res_off[J2K_Q2] == 1) { u_pfx[J2K_Q1] = vlc_decode_u_prefix(vlc_stream, vlc_buf); u_pfx[J2K_Q2] = vlc_decode_u_prefix(vlc_stream, vlc_buf); u_sfx[J2K_Q1] = vlc_decode_u_suffix(vlc_stream, u_pfx[J2K_Q1], vlc_buf); u_sfx[J2K_Q2] = vlc_decode_u_suffix(vlc_stream, u_pfx[J2K_Q2], vlc_buf); u_ext[J2K_Q1] = vlc_decode_u_extension(vlc_stream, u_sfx[J2K_Q1], vlc_buf); u_ext[J2K_Q2] = vlc_decode_u_extension(vlc_stream, u_sfx[J2K_Q2], vlc_buf); u[J2K_Q1] = u_pfx[J2K_Q1] + u_sfx[J2K_Q1] + (u_ext[J2K_Q1] << 2); u[J2K_Q2] = u_pfx[J2K_Q2] + u_sfx[J2K_Q2] + (u_ext[J2K_Q2] << 2); } else if (res_off[J2K_Q1] == 1 || res_off[J2K_Q2] == 1) { uint8_t pos = res_off[J2K_Q1] == 1 ? 0 : 1; u_pfx[pos] = vlc_decode_u_prefix(vlc_stream, vlc_buf); u_sfx[pos] = vlc_decode_u_suffix(vlc_stream, u_pfx[pos], vlc_buf); u_ext[pos] = vlc_decode_u_extension(vlc_stream, u_sfx[pos], vlc_buf); u[pos] = u_pfx[pos] + u_sfx[pos] + (u_ext[pos] << 2); } sp = sig_pat[J2K_Q1]; gamma[J2K_Q1] = 1; if (sp == 0 || sp == 1 || sp == 2 || sp == 4 || sp == 8) gamma[J2K_Q1] = 0; sp = sig_pat[J2K_Q2]; gamma[J2K_Q2] = 1; if (sp == 0 || sp == 1 || sp == 2 || sp == 4 || sp == 8) gamma[J2K_Q2] = 0; E_n[J2K_Q1] = E[4 * (q1 - quad_width) + 1]; E_n[J2K_Q2] = E[4 * (q2 - quad_width) + 1]; E_ne[J2K_Q1] = E[4 * (q1 - quad_width) + 3]; E_ne[J2K_Q2] = E[4 * (q2 - quad_width) + 3]; E_nw[J2K_Q1] = (!is_divisible(q1, c)) * E[FFMAX((4 * (q1 - quad_width) - 1), 0)]; E_nw[J2K_Q2] = (!is_divisible(q2, c)) * E[FFMAX((4 * (q2 - quad_width) - 1), 0)]; E_nf[J2K_Q1] = (!is_divisible(q1 + 1, c)) * E[4 * (q1 - quad_width) + 5]; E_nf[J2K_Q2] = (!is_divisible(q2 + 1, c)) * E[4 * (q2 - quad_width) + 5]; max_e[J2K_Q1] = FFMAX(E_nw[J2K_Q1], FFMAX3(E_n[J2K_Q1], E_ne[J2K_Q1], E_nf[J2K_Q1])); max_e[J2K_Q2] = FFMAX(E_nw[J2K_Q2], FFMAX3(E_n[J2K_Q2], E_ne[J2K_Q2], E_nf[J2K_Q2])); kappa[J2K_Q1] = FFMAX(1, gamma[J2K_Q1] * (max_e[J2K_Q1] - 1)); kappa[J2K_Q2] = FFMAX(1, gamma[J2K_Q2] * (max_e[J2K_Q2] - 1)); U[J2K_Q1] = kappa[J2K_Q1] + u[J2K_Q1]; U[J2K_Q2] = kappa[J2K_Q2] + u[J2K_Q2]; for (int i = 0; i < 4; i++) { m[J2K_Q1][i] = sigma_n[4 * q1 + i] * U[J2K_Q1] - ((emb_pat_k[J2K_Q1] >> i) & 1); m[J2K_Q2][i] = sigma_n[4 * q2 + i] * U[J2K_Q2] - ((emb_pat_k[J2K_Q2] >> i) & 1); } recover_mag_sgn(mag_sgn_stream, J2K_Q1, q1, m_n, known_1, emb_pat_1, v, m, E, mu_n, Dcup, Pcup, pLSB); recover_mag_sgn(mag_sgn_stream, J2K_Q2, q2, m_n, known_1, emb_pat_1, v, m, E, mu_n, Dcup, Pcup, pLSB); q += 2; // Move to the next quad pair } if (quad_width % 2 == 1) { q1 = q; /* calculate context for current quad */ context1 = sigma_n[4 * (q1 - quad_width) + 1]; context1 += (sigma_n[4 * (q1 - quad_width) + 3] << 2); if (!is_divisible(q1, c)) { context1 |= sigma_n[4 * (q1 - quad_width) - 1]; context1 += (sigma_n[4 * q1 - 1] | sigma_n[4 * q1 - 2]) << 1; } if (!is_divisible(q1 + 1, c)) context1 |= sigma_n[4 * (q1 - quad_width) + 5] << 2; if ((ret = jpeg2000_decode_sig_emb(s, mel_state, mel_stream, vlc_stream, dec_cxt_vlc_table1, Dcup, sig_pat, res_off, emb_pat_k, emb_pat_1, J2K_Q1, context1, Lcup, Pcup)) < 0) goto free; for (int i = 0; i < 4; i++) sigma_n[4 * q1 + i] = (sig_pat[J2K_Q1] >> i) & 1; u[J2K_Q1] = 0; /* Recover mag_sgn value */ if (res_off[J2K_Q1] == 1) { u_pfx[J2K_Q1] = vlc_decode_u_prefix(vlc_stream, vlc_buf); u_sfx[J2K_Q1] = vlc_decode_u_suffix(vlc_stream, u_pfx[J2K_Q1], vlc_buf); u_ext[J2K_Q1] = vlc_decode_u_extension(vlc_stream, u_sfx[J2K_Q1], vlc_buf); u[J2K_Q1] = u_pfx[J2K_Q1] + u_sfx[J2K_Q1] + (u_ext[J2K_Q1] << 2); } sp = sig_pat[J2K_Q1]; gamma[J2K_Q1] = 1; if (sp == 0 || sp == 1 || sp == 2 || sp == 4 || sp == 8) gamma[J2K_Q1] = 0; E_n[J2K_Q1] = E[4 * (q1 - quad_width) + 1]; E_ne[J2K_Q1] = E[4 * (q1 - quad_width) + 3]; E_nw[J2K_Q1] = (!is_divisible(q1, c)) * E[FFMAX((4 * (q1 - quad_width) - 1), 0)]; E_nf[J2K_Q1] = (!is_divisible(q1 + 1, c)) * E[4 * (q1 - quad_width) + 5]; max_e[J2K_Q1] = FFMAX(E_nw[J2K_Q1], FFMAX3(E_n[J2K_Q1], E_ne[J2K_Q1], E_nf[J2K_Q1])); kappa[J2K_Q1] = FFMAX(1, gamma[J2K_Q1] * (max_e[J2K_Q1] - 1)); U[J2K_Q1] = kappa[J2K_Q1] + u[J2K_Q1]; for (int i = 0; i < 4; i++) m[J2K_Q1][i] = sigma_n[4 * q1 + i] * U[J2K_Q1] - ((emb_pat_k[J2K_Q1] >> i) & 1); recover_mag_sgn(mag_sgn_stream, J2K_Q1, q1, m_n, known_1, emb_pat_1, v, m, E, mu_n, Dcup, Pcup, pLSB); q += 1; } } // convert to raster-scan for (int y = 0; y < quad_height; y++) { for (int x = 0; x < quad_width; x++) { int j1, j2; int x1, x2 , x3; j1 = 2 * y; j2 = 2 * x; sample_buf[j2 + (j1 * width)] = (int32_t)*mu; jpeg2000_modify_state(j1, j2, width, *sigma, block_states); sigma += 1; mu += 1; x1 = y != quad_height - 1 || is_border_y == 0; sample_buf[j2 + ((j1 + 1) * width)] = ((int32_t)*mu) * x1; jpeg2000_modify_state(j1 + 1, j2, width, (*sigma) * x1, block_states); sigma += 1; mu += 1; x2 = x != quad_width - 1 || is_border_x == 0; sample_buf[(j2 + 1) + (j1 * width)] = ((int32_t)*mu) * x2; jpeg2000_modify_state(j1, j2 + 1, width, (*sigma) * x2, block_states); sigma += 1; mu += 1; x3 = x1 | x2; sample_buf[(j2 + 1) + (j1 + 1) * width] = ((int32_t)*mu) * x3; jpeg2000_modify_state(j1 + 1, j2 + 1, width, (*sigma) * x3, block_states); sigma += 1; mu += 1; } } ret = 1; free: av_freep(&sigma_n); av_freep(&E); av_freep(&mu_n); return ret; } static void jpeg2000_calc_mbr(uint8_t *mbr, const uint16_t i, const uint16_t j, const uint32_t mbr_info, uint8_t causal_cond, uint8_t *block_states, int width) { int local_mbr = 0; local_mbr |= jpeg2000_get_state(i - 1, j - 1, width, HT_SHIFT_SIGMA, block_states); local_mbr |= jpeg2000_get_state(i - 1, j + 0, width, HT_SHIFT_SIGMA, block_states); local_mbr |= jpeg2000_get_state(i - 1, j + 1, width, HT_SHIFT_SIGMA, block_states); local_mbr |= jpeg2000_get_state(i + 0, j - 1, width, HT_SHIFT_SIGMA, block_states); local_mbr |= jpeg2000_get_state(i + 0, j + 1, width, HT_SHIFT_SIGMA, block_states); local_mbr |= jpeg2000_get_state(i + 1, j - 1, width, HT_SHIFT_SIGMA, block_states) * causal_cond; local_mbr |= jpeg2000_get_state(i + 1, j + 0, width, HT_SHIFT_SIGMA, block_states) * causal_cond; local_mbr |= jpeg2000_get_state(i + 1, j + 1, width, HT_SHIFT_SIGMA, block_states) * causal_cond; local_mbr |= jpeg2000_get_state(i - 1, j - 1, width, HT_SHIFT_REF, block_states) * jpeg2000_get_state(i - 1, j - 1, width, HT_SHIFT_SCAN, block_states); local_mbr |= jpeg2000_get_state(i - 1, j + 0, width, HT_SHIFT_REF, block_states) * jpeg2000_get_state(i - 1, j - 1, width, HT_SHIFT_SCAN, block_states); local_mbr |= jpeg2000_get_state(i - 1, j + 1, width, HT_SHIFT_REF, block_states) * jpeg2000_get_state(i - 1, j + 1, width, HT_SHIFT_SCAN, block_states); local_mbr |= jpeg2000_get_state(i + 0, j - 1, width, HT_SHIFT_REF, block_states) * jpeg2000_get_state(i + 0, j - 1, width, HT_SHIFT_SCAN, block_states); local_mbr |= jpeg2000_get_state(i + 0, j + 1, width, HT_SHIFT_REF, block_states) * jpeg2000_get_state(i + 0, j + 1, width, HT_SHIFT_SCAN, block_states); local_mbr |= jpeg2000_get_state(i + 1, j - 1, width, HT_SHIFT_REF, block_states) * jpeg2000_get_state(i + 1, j - 1, width, HT_SHIFT_SCAN, block_states) * causal_cond; local_mbr |= jpeg2000_get_state(i + 1, j + 0, width, HT_SHIFT_REF, block_states) * jpeg2000_get_state(i + 1, j + 0, width, HT_SHIFT_SCAN, block_states) * causal_cond; local_mbr |= jpeg2000_get_state(i + 1, j + 1, width, HT_SHIFT_REF, block_states) * jpeg2000_get_state(i + 1, j + 1, width, HT_SHIFT_SCAN, block_states) * causal_cond; *mbr |= local_mbr; } static void jpeg2000_process_stripes_block(StateVars *sig_prop, int i_s, int j_s, int width, int height, int stride, int pLSB, int32_t *sample_buf, uint8_t *block_states, uint8_t *magref_segment, uint32_t magref_length) { for (int j = j_s; j < j_s + width; j++) { uint32_t mbr_info = 0; for (int i = i_s; i < i_s + height; i++) { int modify_state, cond; uint8_t bit; uint8_t causal_cond = i != (i_s + height - 1); int32_t *sp = &sample_buf[j + (i * (stride - 2))]; uint8_t mbr = 0; if (jpeg2000_get_state(i, j, stride - 2, HT_SHIFT_SIGMA, block_states) == 0) jpeg2000_calc_mbr(&mbr, i, j, mbr_info & 0x1EF, causal_cond, block_states, stride - 2); mbr_info >>= 3; cond = mbr != 0; bit = jpeg2000_peek_bit(sig_prop, magref_segment, magref_length); *sp |= (bit * cond) << pLSB; sig_prop->bits -= cond; modify_state = (((1 << HT_SHIFT_REF_IND) | (1 << HT_SHIFT_REF)) * cond) | 1 << HT_SHIFT_SCAN; jpeg2000_modify_state(i, j, stride - 2, modify_state, block_states); } } } /** * See procedure decodeSigPropMag at Rec. ITU-T T.814, 7.4. */ av_noinline static void jpeg2000_decode_sigprop_segment(Jpeg2000Cblk *cblk, uint16_t width, uint16_t height, uint8_t *magref_segment, uint32_t magref_length, uint8_t pLSB, int32_t *sample_buf, uint8_t *block_states) { StateVars sp_dec; const uint16_t num_v_stripe = height / 4; const uint16_t num_h_stripe = width / 4; int b_width = 4; int b_height = 4; int stride = width + 2; int last_width; uint16_t i = 0, j = 0; jpeg2000_init_zero(&sp_dec); for (int n1 = 0; n1 < num_v_stripe; n1++) { j = 0; for (int n2 = 0; n2 < num_h_stripe; n2++) { jpeg2000_process_stripes_block(&sp_dec, i, j, b_width, b_height, stride, pLSB, sample_buf, block_states, magref_segment, magref_length); j += 4; } last_width = width % 4; if (last_width) jpeg2000_process_stripes_block(&sp_dec, i, j, last_width, b_height, stride, pLSB, sample_buf, block_states, magref_segment, magref_length); i += 4; } /* Decode remaining height stripes */ b_height = height % 4; j = 0; for (int n2 = 0; n2 < num_h_stripe; n2++) { jpeg2000_process_stripes_block(&sp_dec, i, j, b_width, b_height, stride, pLSB, sample_buf, block_states, magref_segment, magref_length); j += 4; } last_width = width % 4; if (last_width) jpeg2000_process_stripes_block(&sp_dec, i, j, last_width, b_height, stride, pLSB, sample_buf, block_states, magref_segment, magref_length); } /** * See procedure decodeSigPropMag at Rec. ITU-T T.814, 7.5. */ static int jpeg2000_decode_magref_segment( uint16_t width, uint16_t block_height, uint8_t *magref_segment,uint32_t magref_length, uint8_t pLSB, int32_t *sample_buf, uint8_t *block_states) { StateVars mag_ref = { 0 }; const uint16_t num_v_stripe = block_height / 4; uint16_t height = 4; uint16_t i_start = 0; int32_t *sp; jpeg2000_init_mag_ref(&mag_ref, magref_length); for (int n1 = 0; n1 < num_v_stripe; n1++) { for (int j = 0; j < width; j++) { for (int i = i_start; i < i_start + height; i++) { /** * We move column wise, going from one quad to another. See * Rec. ITU-T T.814, Figure 7. */ sp = &sample_buf[j + i * width]; if (jpeg2000_get_state(i, j, width, HT_SHIFT_SIGMA, block_states) != 0) { jpeg2000_modify_state(i, j, width, 1 << HT_SHIFT_REF_IND, block_states); *sp |= jpeg2000_import_magref_bit(&mag_ref, magref_segment, magref_length) << pLSB; } } } i_start += 4; } height = block_height % 4; for (int j = 0; j < width; j++) { for (int i = i_start; i < i_start + height; i++) { sp = &sample_buf[j + i * width]; if (jpeg2000_get_state(i, j, width, HT_SHIFT_SIGMA, block_states) != 0) { jpeg2000_modify_state(i, j, width, 1 << HT_SHIFT_REF_IND, block_states); *sp |= jpeg2000_import_magref_bit(&mag_ref, magref_segment, magref_length) << pLSB; } } } return 1; } int ff_jpeg2000_decode_htj2k(const Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *codsty, Jpeg2000T1Context *t1, Jpeg2000Cblk *cblk, int width, int height, int magp, uint8_t roi_shift) { uint8_t p0 = 0; // Number of placeholder passes uint32_t Lcup; // Length of HT cleanup segment uint32_t Lref; // Length of Refinement segment uint32_t Scup; // HT cleanup segment suffix length uint32_t Pcup; // HT cleanup segment prefix length uint8_t S_blk; // Number of skipped magnitude bitplanes uint8_t pLSB; uint8_t *Dcup; // Byte of an HT cleanup segment uint8_t *Dref; // Byte of an HT refinement segment int z_blk; // Number of ht coding pass uint8_t empty_passes; StateVars mag_sgn; // Magnitude and Sign StateVars mel; // Adaptive run-length coding StateVars vlc; // Variable Length coding StateVars sig_prop; // Significance propagation MelDecoderState mel_state; int ret; /* Temporary buffers */ int32_t *sample_buf = NULL; uint8_t *block_states = NULL; int32_t n, val; // Post-processing int32_t M_b = magp; /* codeblock size as constrained by Rec. ITU-T T.800, Table A.18 */ av_assert0(width <= 1024U && height <= 1024U); av_assert0(width * height <= 4096); av_assert0(width * height > 0); memset(t1->data, 0, t1->stride * height * sizeof(*t1->data)); memset(t1->flags, 0, t1->stride * (height + 2) * sizeof(*t1->flags)); if (cblk->npasses == 0) return 0; if (cblk->npasses > 3) p0 = 0; else if (cblk->length == 0) p0 = 1; empty_passes = p0 * 3; z_blk = cblk->npasses - empty_passes; if (z_blk <= 0) return 0; // No passes within this set, continue Lcup = cblk->pass_lengths[0]; Lref = cblk->pass_lengths[1]; if (Lcup < 2) { av_log(s->avctx, AV_LOG_ERROR, "Cleanup pass length must be at least 2 bytes in length\n"); return AVERROR_INVALIDDATA; } Dcup = cblk->data; Dref = cblk->data + Lcup; // Dref comes after the refinement segment S_blk = p0 + cblk->zbp; pLSB = 30 - S_blk; Scup = (Dcup[Lcup - 1] << 4) + (Dcup[Lcup - 2] & 0x0F); if (Scup < 2 || Scup > Lcup || Scup > 4079) { av_log(s->avctx, AV_LOG_ERROR, "Cleanup pass suffix length is invalid %d\n", Scup); ret = AVERROR_INVALIDDATA; goto free; } Pcup = Lcup - Scup; /* modDcup shall be done before the creation of vlc instance. */ Dcup[Lcup - 1] = 0xFF; Dcup[Lcup - 2] |= 0x0F; /* Magnitude and refinement */ jpeg2000_init_zero(&mag_sgn); jpeg2000_bitbuf_refill_forward(&mag_sgn, Dcup, Pcup); /* Significance propagation */ jpeg2000_init_zero(&sig_prop); /* Adaptive run length */ jpeg2000_init_mel(&mel, Pcup); /* Variable Length coding */ jpeg2000_init_vlc(&vlc, Lcup, Pcup, Dcup); jpeg2000_init_mel_decoder(&mel_state); sample_buf = av_calloc((width + 4) * (height + 4), sizeof(int32_t)); block_states = av_calloc((width + 4) * (height + 4), sizeof(uint8_t)); if (!sample_buf || !block_states) { ret = AVERROR(ENOMEM); goto free; } if ((ret = jpeg2000_decode_ht_cleanup_segment(s, cblk, t1, &mel_state, &mel, &vlc, &mag_sgn, Dcup, Lcup, Pcup, pLSB, width, height, sample_buf, block_states)) < 0) goto free; if (cblk->npasses > 1) jpeg2000_decode_sigprop_segment(cblk, width, height, Dref, Lref, pLSB - 1, sample_buf, block_states); if (cblk->npasses > 2) { if (Lref < 2){ av_log(s->avctx,AV_LOG_ERROR,"Invalid magnitude refinement length\n"); ret = AVERROR_INVALIDDATA; goto free; } if ((ret = jpeg2000_decode_magref_segment(width, height, Dref, Lref, pLSB - 1, sample_buf, block_states)) < 0) goto free; } pLSB = 31 - M_b; /* Reconstruct the sample values */ for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) { n = x + (y * t1->stride); val = sample_buf[x + (y * width)]; /* Convert sign-magnitude to two's complement. */ val = val >> 31 ? 0x80000000 - val : val; val >>= (pLSB - 1); t1->data[n] = val; } } free: av_freep(&sample_buf); av_freep(&block_states); return ret; } /** * CtxVLC tables (see Rec. ITU-T T.800, Annex C) as found at * https://github.com/osamu620/OpenHTJ2K (author: Osamu Watanabe) */ static const uint16_t dec_cxt_vlc_table1[1024] = { 0x0016, 0x006A, 0x0046, 0x00DD, 0x0086, 0x888B, 0x0026, 0x444D, 0x0016, 0x00AA, 0x0046, 0x88AD, 0x0086, 0x003A, 0x0026, 0x00DE, 0x0016, 0x00CA, 0x0046, 0x009D, 0x0086, 0x005A, 0x0026, 0x222D, 0x0016, 0x009A, 0x0046, 0x007D, 0x0086, 0x01FD, 0x0026, 0x007E, 0x0016, 0x006A, 0x0046, 0x88CD, 0x0086, 0x888B, 0x0026, 0x111D, 0x0016, 0x00AA, 0x0046, 0x005D, 0x0086, 0x003A, 0x0026, 0x00EE, 0x0016, 0x00CA, 0x0046, 0x00BD, 0x0086, 0x005A, 0x0026, 0x11FF, 0x0016, 0x009A, 0x0046, 0x003D, 0x0086, 0x04ED, 0x0026, 0x2AAF, 0x0016, 0x006A, 0x0046, 0x00DD, 0x0086, 0x888B, 0x0026, 0x444D, 0x0016, 0x00AA, 0x0046, 0x88AD, 0x0086, 0x003A, 0x0026, 0x44EF, 0x0016, 0x00CA, 0x0046, 0x009D, 0x0086, 0x005A, 0x0026, 0x222D, 0x0016, 0x009A, 0x0046, 0x007D, 0x0086, 0x01FD, 0x0026, 0x00BE, 0x0016, 0x006A, 0x0046, 0x88CD, 0x0086, 0x888B, 0x0026, 0x111D, 0x0016, 0x00AA, 0x0046, 0x005D, 0x0086, 0x003A, 0x0026, 0x4CCF, 0x0016, 0x00CA, 0x0046, 0x00BD, 0x0086, 0x005A, 0x0026, 0x00FE, 0x0016, 0x009A, 0x0046, 0x003D, 0x0086, 0x04ED, 0x0026, 0x006F, 0x0002, 0x0088, 0x0002, 0x005C, 0x0002, 0x0018, 0x0002, 0x00DE, 0x0002, 0x0028, 0x0002, 0x009C, 0x0002, 0x004A, 0x0002, 0x007E, 0x0002, 0x0088, 0x0002, 0x00CC, 0x0002, 0x0018, 0x0002, 0x888F, 0x0002, 0x0028, 0x0002, 0x00FE, 0x0002, 0x003A, 0x0002, 0x222F, 0x0002, 0x0088, 0x0002, 0x04FD, 0x0002, 0x0018, 0x0002, 0x00BE, 0x0002, 0x0028, 0x0002, 0x00BF, 0x0002, 0x004A, 0x0002, 0x006E, 0x0002, 0x0088, 0x0002, 0x00AC, 0x0002, 0x0018, 0x0002, 0x444F, 0x0002, 0x0028, 0x0002, 0x00EE, 0x0002, 0x003A, 0x0002, 0x113F, 0x0002, 0x0088, 0x0002, 0x005C, 0x0002, 0x0018, 0x0002, 0x00CF, 0x0002, 0x0028, 0x0002, 0x009C, 0x0002, 0x004A, 0x0002, 0x006F, 0x0002, 0x0088, 0x0002, 0x00CC, 0x0002, 0x0018, 0x0002, 0x009F, 0x0002, 0x0028, 0x0002, 0x00EF, 0x0002, 0x003A, 0x0002, 0x233F, 0x0002, 0x0088, 0x0002, 0x04FD, 0x0002, 0x0018, 0x0002, 0x00AF, 0x0002, 0x0028, 0x0002, 0x44FF, 0x0002, 0x004A, 0x0002, 0x005F, 0x0002, 0x0088, 0x0002, 0x00AC, 0x0002, 0x0018, 0x0002, 0x007F, 0x0002, 0x0028, 0x0002, 0x00DF, 0x0002, 0x003A, 0x0002, 0x111F, 0x0002, 0x0028, 0x0002, 0x005C, 0x0002, 0x008A, 0x0002, 0x00BF, 0x0002, 0x0018, 0x0002, 0x00FE, 0x0002, 0x00CC, 0x0002, 0x007E, 0x0002, 0x0028, 0x0002, 0x8FFF, 0x0002, 0x004A, 0x0002, 0x007F, 0x0002, 0x0018, 0x0002, 0x00DF, 0x0002, 0x00AC, 0x0002, 0x133F, 0x0002, 0x0028, 0x0002, 0x222D, 0x0002, 0x008A, 0x0002, 0x00BE, 0x0002, 0x0018, 0x0002, 0x44EF, 0x0002, 0x2AAD, 0x0002, 0x006E, 0x0002, 0x0028, 0x0002, 0x15FF, 0x0002, 0x004A, 0x0002, 0x009E, 0x0002, 0x0018, 0x0002, 0x00CF, 0x0002, 0x003C, 0x0002, 0x223F, 0x0002, 0x0028, 0x0002, 0x005C, 0x0002, 0x008A, 0x0002, 0x2BBF, 0x0002, 0x0018, 0x0002, 0x04EF, 0x0002, 0x00CC, 0x0002, 0x006F, 0x0002, 0x0028, 0x0002, 0x27FF, 0x0002, 0x004A, 0x0002, 0x009F, 0x0002, 0x0018, 0x0002, 0x00DE, 0x0002, 0x00AC, 0x0002, 0x444F, 0x0002, 0x0028, 0x0002, 0x222D, 0x0002, 0x008A, 0x0002, 0x8AAF, 0x0002, 0x0018, 0x0002, 0x00EE, 0x0002, 0x2AAD, 0x0002, 0x005F, 0x0002, 0x0028, 0x0002, 0x44FF, 0x0002, 0x004A, 0x0002, 0x888F, 0x0002, 0x0018, 0x0002, 0xAAAF, 0x0002, 0x003C, 0x0002, 0x111F, 0x0004, 0x8FFD, 0x0028, 0x005C, 0x0004, 0x00BC, 0x008A, 0x66FF, 0x0004, 0x00CD, 0x0018, 0x111D, 0x0004, 0x009C, 0x003A, 0x8AAF, 0x0004, 0x00FC, 0x0028, 0x133D, 0x0004, 0x00AC, 0x004A, 0x3BBF, 0x0004, 0x2BBD, 0x0018, 0x5FFF, 0x0004, 0x006C, 0x157D, 0x455F, 0x0004, 0x2FFD, 0x0028, 0x222D, 0x0004, 0x22AD, 0x008A, 0x44EF, 0x0004, 0x00CC, 0x0018, 0x4FFF, 0x0004, 0x007C, 0x003A, 0x447F, 0x0004, 0x04DD, 0x0028, 0x233D, 0x0004, 0x009D, 0x004A, 0x00DE, 0x0004, 0x88BD, 0x0018, 0xAFFF, 0x0004, 0x115D, 0x1FFD, 0x444F, 0x0004, 0x8FFD, 0x0028, 0x005C, 0x0004, 0x00BC, 0x008A, 0x8CEF, 0x0004, 0x00CD, 0x0018, 0x111D, 0x0004, 0x009C, 0x003A, 0x888F, 0x0004, 0x00FC, 0x0028, 0x133D, 0x0004, 0x00AC, 0x004A, 0x44DF, 0x0004, 0x2BBD, 0x0018, 0x8AFF, 0x0004, 0x006C, 0x157D, 0x006F, 0x0004, 0x2FFD, 0x0028, 0x222D, 0x0004, 0x22AD, 0x008A, 0x00EE, 0x0004, 0x00CC, 0x0018, 0x2EEF, 0x0004, 0x007C, 0x003A, 0x277F, 0x0004, 0x04DD, 0x0028, 0x233D, 0x0004, 0x009D, 0x004A, 0x1BBF, 0x0004, 0x88BD, 0x0018, 0x37FF, 0x0004, 0x115D, 0x1FFD, 0x333F, 0x0002, 0x0088, 0x0002, 0x02ED, 0x0002, 0x00CA, 0x0002, 0x4CCF, 0x0002, 0x0048, 0x0002, 0x23FF, 0x0002, 0x001A, 0x0002, 0x888F, 0x0002, 0x0088, 0x0002, 0x006C, 0x0002, 0x002A, 0x0002, 0x00AF, 0x0002, 0x0048, 0x0002, 0x22EF, 0x0002, 0x00AC, 0x0002, 0x005F, 0x0002, 0x0088, 0x0002, 0x444D, 0x0002, 0x00CA, 0x0002, 0xCCCF, 0x0002, 0x0048, 0x0002, 0x00FE, 0x0002, 0x001A, 0x0002, 0x006F, 0x0002, 0x0088, 0x0002, 0x005C, 0x0002, 0x002A, 0x0002, 0x009F, 0x0002, 0x0048, 0x0002, 0x00DF, 0x0002, 0x03FD, 0x0002, 0x222F, 0x0002, 0x0088, 0x0002, 0x02ED, 0x0002, 0x00CA, 0x0002, 0x8CCF, 0x0002, 0x0048, 0x0002, 0x11FF, 0x0002, 0x001A, 0x0002, 0x007E, 0x0002, 0x0088, 0x0002, 0x006C, 0x0002, 0x002A, 0x0002, 0x007F, 0x0002, 0x0048, 0x0002, 0x00EE, 0x0002, 0x00AC, 0x0002, 0x003E, 0x0002, 0x0088, 0x0002, 0x444D, 0x0002, 0x00CA, 0x0002, 0x00BE, 0x0002, 0x0048, 0x0002, 0x00BF, 0x0002, 0x001A, 0x0002, 0x003F, 0x0002, 0x0088, 0x0002, 0x005C, 0x0002, 0x002A, 0x0002, 0x009E, 0x0002, 0x0048, 0x0002, 0x00DE, 0x0002, 0x03FD, 0x0002, 0x111F, 0x0004, 0x8AED, 0x0048, 0x888D, 0x0004, 0x00DC, 0x00CA, 0x3FFF, 0x0004, 0xCFFD, 0x002A, 0x003D, 0x0004, 0x00BC, 0x005A, 0x8DDF, 0x0004, 0x8FFD, 0x0048, 0x006C, 0x0004, 0x027D, 0x008A, 0x99FF, 0x0004, 0x00EC, 0x00FA, 0x003C, 0x0004, 0x00AC, 0x001A, 0x009F, 0x0004, 0x2FFD, 0x0048, 0x007C, 0x0004, 0x44CD, 0x00CA, 0x67FF, 0x0004, 0x1FFD, 0x002A, 0x444D, 0x0004, 0x00AD, 0x005A, 0x8CCF, 0x0004, 0x4FFD, 0x0048, 0x445D, 0x0004, 0x01BD, 0x008A, 0x4EEF, 0x0004, 0x45DD, 0x00FA, 0x111D, 0x0004, 0x009C, 0x001A, 0x222F, 0x0004, 0x8AED, 0x0048, 0x888D, 0x0004, 0x00DC, 0x00CA, 0xAFFF, 0x0004, 0xCFFD, 0x002A, 0x003D, 0x0004, 0x00BC, 0x005A, 0x11BF, 0x0004, 0x8FFD, 0x0048, 0x006C, 0x0004, 0x027D, 0x008A, 0x22EF, 0x0004, 0x00EC, 0x00FA, 0x003C, 0x0004, 0x00AC, 0x001A, 0x227F, 0x0004, 0x2FFD, 0x0048, 0x007C, 0x0004, 0x44CD, 0x00CA, 0x5DFF, 0x0004, 0x1FFD, 0x002A, 0x444D, 0x0004, 0x00AD, 0x005A, 0x006F, 0x0004, 0x4FFD, 0x0048, 0x445D, 0x0004, 0x01BD, 0x008A, 0x11DF, 0x0004, 0x45DD, 0x00FA, 0x111D, 0x0004, 0x009C, 0x001A, 0x155F, 0x0006, 0x00FC, 0x0018, 0x111D, 0x0048, 0x888D, 0x00AA, 0x4DDF, 0x0006, 0x2AAD, 0x005A, 0x67FF, 0x0028, 0x223D, 0x00BC, 0xAAAF, 0x0006, 0x00EC, 0x0018, 0x5FFF, 0x0048, 0x006C, 0x008A, 0xCCCF, 0x0006, 0x009D, 0x00CA, 0x44EF, 0x0028, 0x003C, 0x8FFD, 0x137F, 0x0006, 0x8EED, 0x0018, 0x1FFF, 0x0048, 0x007C, 0x00AA, 0x4CCF, 0x0006, 0x227D, 0x005A, 0x1DDF, 0x0028, 0x444D, 0x4FFD, 0x155F, 0x0006, 0x00DC, 0x0018, 0x2EEF, 0x0048, 0x445D, 0x008A, 0x22BF, 0x0006, 0x009C, 0x00CA, 0x8CDF, 0x0028, 0x222D, 0x2FFD, 0x226F, 0x0006, 0x00FC, 0x0018, 0x111D, 0x0048, 0x888D, 0x00AA, 0x1BBF, 0x0006, 0x2AAD, 0x005A, 0x33FF, 0x0028, 0x223D, 0x00BC, 0x8AAF, 0x0006, 0x00EC, 0x0018, 0x9BFF, 0x0048, 0x006C, 0x008A, 0x8ABF, 0x0006, 0x009D, 0x00CA, 0x4EEF, 0x0028, 0x003C, 0x8FFD, 0x466F, 0x0006, 0x8EED, 0x0018, 0xCFFF, 0x0048, 0x007C, 0x00AA, 0x8CCF, 0x0006, 0x227D, 0x005A, 0xAEEF, 0x0028, 0x444D, 0x4FFD, 0x477F, 0x0006, 0x00DC, 0x0018, 0xAFFF, 0x0048, 0x445D, 0x008A, 0x2BBF, 0x0006, 0x009C, 0x00CA, 0x44DF, 0x0028, 0x222D, 0x2FFD, 0x133F, 0x00F6, 0xAFFD, 0x1FFB, 0x003C, 0x0008, 0x23BD, 0x007A, 0x11DF, 0x00F6, 0x45DD, 0x2FFB, 0x4EEF, 0x00DA, 0x177D, 0xCFFD, 0x377F, 0x00F6, 0x3FFD, 0x8FFB, 0x111D, 0x0008, 0x009C, 0x005A, 0x1BBF, 0x00F6, 0x00CD, 0x00BA, 0x8DDF, 0x4FFB, 0x006C, 0x9BFD, 0x455F, 0x00F6, 0x67FD, 0x1FFB, 0x002C, 0x0008, 0x00AC, 0x007A, 0x009F, 0x00F6, 0x00AD, 0x2FFB, 0x7FFF, 0x00DA, 0x004C, 0x5FFD, 0x477F, 0x00F6, 0x00EC, 0x8FFB, 0x001C, 0x0008, 0x008C, 0x005A, 0x888F, 0x00F6, 0x00CC, 0x00BA, 0x2EEF, 0x4FFB, 0x115D, 0x8AED, 0x113F, 0x00F6, 0xAFFD, 0x1FFB, 0x003C, 0x0008, 0x23BD, 0x007A, 0x1DDF, 0x00F6, 0x45DD, 0x2FFB, 0xBFFF, 0x00DA, 0x177D, 0xCFFD, 0x447F, 0x00F6, 0x3FFD, 0x8FFB, 0x111D, 0x0008, 0x009C, 0x005A, 0x277F, 0x00F6, 0x00CD, 0x00BA, 0x22EF, 0x4FFB, 0x006C, 0x9BFD, 0x444F, 0x00F6, 0x67FD, 0x1FFB, 0x002C, 0x0008, 0x00AC, 0x007A, 0x11BF, 0x00F6, 0x00AD, 0x2FFB, 0xFFFF, 0x00DA, 0x004C, 0x5FFD, 0x233F, 0x00F6, 0x00EC, 0x8FFB, 0x001C, 0x0008, 0x008C, 0x005A, 0x006F, 0x00F6, 0x00CC, 0x00BA, 0x8BBF, 0x4FFB, 0x115D, 0x8AED, 0x222F}; static const uint16_t dec_cxt_vlc_table0[1024] = { 0x0026, 0x00AA, 0x0046, 0x006C, 0x0086, 0x8AED, 0x0018, 0x8DDF, 0x0026, 0x01BD, 0x0046, 0x5FFF, 0x0086, 0x027D, 0x005A, 0x155F, 0x0026, 0x003A, 0x0046, 0x444D, 0x0086, 0x4CCD, 0x0018, 0xCCCF, 0x0026, 0x2EFD, 0x0046, 0x99FF, 0x0086, 0x009C, 0x00CA, 0x133F, 0x0026, 0x00AA, 0x0046, 0x445D, 0x0086, 0x8CCD, 0x0018, 0x11DF, 0x0026, 0x4FFD, 0x0046, 0xCFFF, 0x0086, 0x009D, 0x005A, 0x007E, 0x0026, 0x003A, 0x0046, 0x1FFF, 0x0086, 0x88AD, 0x0018, 0x00BE, 0x0026, 0x8FFD, 0x0046, 0x4EEF, 0x0086, 0x888D, 0x00CA, 0x111F, 0x0026, 0x00AA, 0x0046, 0x006C, 0x0086, 0x8AED, 0x0018, 0x45DF, 0x0026, 0x01BD, 0x0046, 0x22EF, 0x0086, 0x027D, 0x005A, 0x227F, 0x0026, 0x003A, 0x0046, 0x444D, 0x0086, 0x4CCD, 0x0018, 0x11BF, 0x0026, 0x2EFD, 0x0046, 0x00FE, 0x0086, 0x009C, 0x00CA, 0x223F, 0x0026, 0x00AA, 0x0046, 0x445D, 0x0086, 0x8CCD, 0x0018, 0x00DE, 0x0026, 0x4FFD, 0x0046, 0xABFF, 0x0086, 0x009D, 0x005A, 0x006F, 0x0026, 0x003A, 0x0046, 0x6EFF, 0x0086, 0x88AD, 0x0018, 0x2AAF, 0x0026, 0x8FFD, 0x0046, 0x00EE, 0x0086, 0x888D, 0x00CA, 0x222F, 0x0004, 0x00CA, 0x0088, 0x027D, 0x0004, 0x4CCD, 0x0028, 0x00FE, 0x0004, 0x2AFD, 0x0048, 0x005C, 0x0004, 0x009D, 0x0018, 0x00DE, 0x0004, 0x01BD, 0x0088, 0x006C, 0x0004, 0x88AD, 0x0028, 0x11DF, 0x0004, 0x8AED, 0x0048, 0x003C, 0x0004, 0x888D, 0x0018, 0x111F, 0x0004, 0x00CA, 0x0088, 0x006D, 0x0004, 0x88CD, 0x0028, 0x88FF, 0x0004, 0x8BFD, 0x0048, 0x444D, 0x0004, 0x009C, 0x0018, 0x00BE, 0x0004, 0x4EFD, 0x0088, 0x445D, 0x0004, 0x00AC, 0x0028, 0x00EE, 0x0004, 0x45DD, 0x0048, 0x222D, 0x0004, 0x003D, 0x0018, 0x007E, 0x0004, 0x00CA, 0x0088, 0x027D, 0x0004, 0x4CCD, 0x0028, 0x1FFF, 0x0004, 0x2AFD, 0x0048, 0x005C, 0x0004, 0x009D, 0x0018, 0x11BF, 0x0004, 0x01BD, 0x0088, 0x006C, 0x0004, 0x88AD, 0x0028, 0x22EF, 0x0004, 0x8AED, 0x0048, 0x003C, 0x0004, 0x888D, 0x0018, 0x227F, 0x0004, 0x00CA, 0x0088, 0x006D, 0x0004, 0x88CD, 0x0028, 0x4EEF, 0x0004, 0x8BFD, 0x0048, 0x444D, 0x0004, 0x009C, 0x0018, 0x2AAF, 0x0004, 0x4EFD, 0x0088, 0x445D, 0x0004, 0x00AC, 0x0028, 0x8DDF, 0x0004, 0x45DD, 0x0048, 0x222D, 0x0004, 0x003D, 0x0018, 0x155F, 0x0004, 0x005A, 0x0088, 0x006C, 0x0004, 0x88DD, 0x0028, 0x23FF, 0x0004, 0x11FD, 0x0048, 0x444D, 0x0004, 0x00AD, 0x0018, 0x00BE, 0x0004, 0x137D, 0x0088, 0x155D, 0x0004, 0x00CC, 0x0028, 0x00DE, 0x0004, 0x02ED, 0x0048, 0x111D, 0x0004, 0x009D, 0x0018, 0x007E, 0x0004, 0x005A, 0x0088, 0x455D, 0x0004, 0x44CD, 0x0028, 0x00EE, 0x0004, 0x1FFD, 0x0048, 0x003C, 0x0004, 0x00AC, 0x0018, 0x555F, 0x0004, 0x47FD, 0x0088, 0x113D, 0x0004, 0x02BD, 0x0028, 0x477F, 0x0004, 0x4CDD, 0x0048, 0x8FFF, 0x0004, 0x009C, 0x0018, 0x222F, 0x0004, 0x005A, 0x0088, 0x006C, 0x0004, 0x88DD, 0x0028, 0x00FE, 0x0004, 0x11FD, 0x0048, 0x444D, 0x0004, 0x00AD, 0x0018, 0x888F, 0x0004, 0x137D, 0x0088, 0x155D, 0x0004, 0x00CC, 0x0028, 0x8CCF, 0x0004, 0x02ED, 0x0048, 0x111D, 0x0004, 0x009D, 0x0018, 0x006F, 0x0004, 0x005A, 0x0088, 0x455D, 0x0004, 0x44CD, 0x0028, 0x1DDF, 0x0004, 0x1FFD, 0x0048, 0x003C, 0x0004, 0x00AC, 0x0018, 0x227F, 0x0004, 0x47FD, 0x0088, 0x113D, 0x0004, 0x02BD, 0x0028, 0x22BF, 0x0004, 0x4CDD, 0x0048, 0x22EF, 0x0004, 0x009C, 0x0018, 0x233F, 0x0006, 0x4DDD, 0x4FFB, 0xCFFF, 0x0018, 0x113D, 0x005A, 0x888F, 0x0006, 0x23BD, 0x008A, 0x00EE, 0x002A, 0x155D, 0xAAFD, 0x277F, 0x0006, 0x44CD, 0x8FFB, 0x44EF, 0x0018, 0x467D, 0x004A, 0x2AAF, 0x0006, 0x00AC, 0x555B, 0x99DF, 0x1FFB, 0x003C, 0x5FFD, 0x266F, 0x0006, 0x1DDD, 0x4FFB, 0x6EFF, 0x0018, 0x177D, 0x005A, 0x1BBF, 0x0006, 0x88AD, 0x008A, 0x5DDF, 0x002A, 0x444D, 0x2FFD, 0x667F, 0x0006, 0x00CC, 0x8FFB, 0x2EEF, 0x0018, 0x455D, 0x004A, 0x119F, 0x0006, 0x009C, 0x555B, 0x8CCF, 0x1FFB, 0x111D, 0x8CED, 0x006E, 0x0006, 0x4DDD, 0x4FFB, 0x3FFF, 0x0018, 0x113D, 0x005A, 0x11BF, 0x0006, 0x23BD, 0x008A, 0x8DDF, 0x002A, 0x155D, 0xAAFD, 0x222F, 0x0006, 0x44CD, 0x8FFB, 0x00FE, 0x0018, 0x467D, 0x004A, 0x899F, 0x0006, 0x00AC, 0x555B, 0x00DE, 0x1FFB, 0x003C, 0x5FFD, 0x446F, 0x0006, 0x1DDD, 0x4FFB, 0x9BFF, 0x0018, 0x177D, 0x005A, 0x00BE, 0x0006, 0x88AD, 0x008A, 0xCDDF, 0x002A, 0x444D, 0x2FFD, 0x007E, 0x0006, 0x00CC, 0x8FFB, 0x4EEF, 0x0018, 0x455D, 0x004A, 0x377F, 0x0006, 0x009C, 0x555B, 0x8BBF, 0x1FFB, 0x111D, 0x8CED, 0x233F, 0x0004, 0x00AA, 0x0088, 0x047D, 0x0004, 0x01DD, 0x0028, 0x11DF, 0x0004, 0x27FD, 0x0048, 0x005C, 0x0004, 0x8AAD, 0x0018, 0x2BBF, 0x0004, 0x009C, 0x0088, 0x006C, 0x0004, 0x00CC, 0x0028, 0x00EE, 0x0004, 0x8CED, 0x0048, 0x222D, 0x0004, 0x888D, 0x0018, 0x007E, 0x0004, 0x00AA, 0x0088, 0x006D, 0x0004, 0x88CD, 0x0028, 0x00FE, 0x0004, 0x19FD, 0x0048, 0x003C, 0x0004, 0x2AAD, 0x0018, 0xAAAF, 0x0004, 0x8BFD, 0x0088, 0x005D, 0x0004, 0x00BD, 0x0028, 0x4CCF, 0x0004, 0x44ED, 0x0048, 0x4FFF, 0x0004, 0x223D, 0x0018, 0x111F, 0x0004, 0x00AA, 0x0088, 0x047D, 0x0004, 0x01DD, 0x0028, 0x99FF, 0x0004, 0x27FD, 0x0048, 0x005C, 0x0004, 0x8AAD, 0x0018, 0x00BE, 0x0004, 0x009C, 0x0088, 0x006C, 0x0004, 0x00CC, 0x0028, 0x00DE, 0x0004, 0x8CED, 0x0048, 0x222D, 0x0004, 0x888D, 0x0018, 0x444F, 0x0004, 0x00AA, 0x0088, 0x006D, 0x0004, 0x88CD, 0x0028, 0x2EEF, 0x0004, 0x19FD, 0x0048, 0x003C, 0x0004, 0x2AAD, 0x0018, 0x447F, 0x0004, 0x8BFD, 0x0088, 0x005D, 0x0004, 0x00BD, 0x0028, 0x009F, 0x0004, 0x44ED, 0x0048, 0x67FF, 0x0004, 0x223D, 0x0018, 0x133F, 0x0006, 0x00CC, 0x008A, 0x9DFF, 0x2FFB, 0x467D, 0x1FFD, 0x99BF, 0x0006, 0x2AAD, 0x002A, 0x66EF, 0x4FFB, 0x005C, 0x2EED, 0x377F, 0x0006, 0x89BD, 0x004A, 0x00FE, 0x8FFB, 0x006C, 0x67FD, 0x889F, 0x0006, 0x888D, 0x001A, 0x5DDF, 0x00AA, 0x222D, 0x89DD, 0x444F, 0x0006, 0x2BBD, 0x008A, 0xCFFF, 0x2FFB, 0x226D, 0x009C, 0x00BE, 0x0006, 0xAAAD, 0x002A, 0x1DDF, 0x4FFB, 0x003C, 0x4DDD, 0x466F, 0x0006, 0x8AAD, 0x004A, 0xAEEF, 0x8FFB, 0x445D, 0x8EED, 0x177F, 0x0006, 0x233D, 0x001A, 0x4CCF, 0x00AA, 0xAFFF, 0x88CD, 0x133F, 0x0006, 0x00CC, 0x008A, 0x77FF, 0x2FFB, 0x467D, 0x1FFD, 0x3BBF, 0x0006, 0x2AAD, 0x002A, 0x00EE, 0x4FFB, 0x005C, 0x2EED, 0x007E, 0x0006, 0x89BD, 0x004A, 0x4EEF, 0x8FFB, 0x006C, 0x67FD, 0x667F, 0x0006, 0x888D, 0x001A, 0x00DE, 0x00AA, 0x222D, 0x89DD, 0x333F, 0x0006, 0x2BBD, 0x008A, 0x57FF, 0x2FFB, 0x226D, 0x009C, 0x199F, 0x0006, 0xAAAD, 0x002A, 0x99DF, 0x4FFB, 0x003C, 0x4DDD, 0x155F, 0x0006, 0x8AAD, 0x004A, 0xCEEF, 0x8FFB, 0x445D, 0x8EED, 0x277F, 0x0006, 0x233D, 0x001A, 0x1BBF, 0x00AA, 0x3FFF, 0x88CD, 0x111F, 0x0006, 0x45DD, 0x2FFB, 0x111D, 0x0018, 0x467D, 0x8FFD, 0xCCCF, 0x0006, 0x19BD, 0x004A, 0x22EF, 0x002A, 0x222D, 0x3FFD, 0x888F, 0x0006, 0x00CC, 0x008A, 0x00FE, 0x0018, 0x115D, 0xCFFD, 0x8AAF, 0x0006, 0x00AC, 0x003A, 0x8CDF, 0x1FFB, 0x133D, 0x66FD, 0x466F, 0x0006, 0x8CCD, 0x2FFB, 0x5FFF, 0x0018, 0x006C, 0x4FFD, 0xABBF, 0x0006, 0x22AD, 0x004A, 0x00EE, 0x002A, 0x233D, 0xAEFD, 0x377F, 0x0006, 0x2BBD, 0x008A, 0x55DF, 0x0018, 0x005C, 0x177D, 0x119F, 0x0006, 0x009C, 0x003A, 0x4CCF, 0x1FFB, 0x333D, 0x8EED, 0x444F, 0x0006, 0x45DD, 0x2FFB, 0x111D, 0x0018, 0x467D, 0x8FFD, 0x99BF, 0x0006, 0x19BD, 0x004A, 0x2EEF, 0x002A, 0x222D, 0x3FFD, 0x667F, 0x0006, 0x00CC, 0x008A, 0x4EEF, 0x0018, 0x115D, 0xCFFD, 0x899F, 0x0006, 0x00AC, 0x003A, 0x00DE, 0x1FFB, 0x133D, 0x66FD, 0x226F, 0x0006, 0x8CCD, 0x2FFB, 0x9BFF, 0x0018, 0x006C, 0x4FFD, 0x00BE, 0x0006, 0x22AD, 0x004A, 0x1DDF, 0x002A, 0x233D, 0xAEFD, 0x007E, 0x0006, 0x2BBD, 0x008A, 0xCEEF, 0x0018, 0x005C, 0x177D, 0x277F, 0x0006, 0x009C, 0x003A, 0x8BBF, 0x1FFB, 0x333D, 0x8EED, 0x455F, 0x1FF9, 0x1DDD, 0xAFFB, 0x00DE, 0x8FF9, 0x001C, 0xFFFB, 0x477F, 0x4FF9, 0x177D, 0x3FFB, 0x3BBF, 0x2FF9, 0xAEEF, 0x8EED, 0x444F, 0x1FF9, 0x22AD, 0x000A, 0x8BBF, 0x8FF9, 0x00FE, 0xCFFD, 0x007E, 0x4FF9, 0x115D, 0x5FFB, 0x577F, 0x2FF9, 0x8DDF, 0x2EED, 0x333F, 0x1FF9, 0x2BBD, 0xAFFB, 0x88CF, 0x8FF9, 0xBFFF, 0xFFFB, 0x377F, 0x4FF9, 0x006D, 0x3FFB, 0x00BE, 0x2FF9, 0x66EF, 0x9FFD, 0x133F, 0x1FF9, 0x009D, 0x000A, 0xABBF, 0x8FF9, 0xDFFF, 0x6FFD, 0x006E, 0x4FF9, 0x002C, 0x5FFB, 0x888F, 0x2FF9, 0xCDDF, 0x4DDD, 0x222F, 0x1FF9, 0x1DDD, 0xAFFB, 0x4CCF, 0x8FF9, 0x001C, 0xFFFB, 0x277F, 0x4FF9, 0x177D, 0x3FFB, 0x99BF, 0x2FF9, 0xCEEF, 0x8EED, 0x004E, 0x1FF9, 0x22AD, 0x000A, 0x00AE, 0x8FF9, 0x7FFF, 0xCFFD, 0x005E, 0x4FF9, 0x115D, 0x5FFB, 0x009E, 0x2FF9, 0x5DDF, 0x2EED, 0x003E, 0x1FF9, 0x2BBD, 0xAFFB, 0x00CE, 0x8FF9, 0xEFFF, 0xFFFB, 0x667F, 0x4FF9, 0x006D, 0x3FFB, 0x8AAF, 0x2FF9, 0x00EE, 0x9FFD, 0x233F, 0x1FF9, 0x009D, 0x000A, 0x1BBF, 0x8FF9, 0x4EEF, 0x6FFD, 0x455F, 0x4FF9, 0x002C, 0x5FFB, 0x008E, 0x2FF9, 0x99DF, 0x4DDD, 0x111F};