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author | Lasse Collin <lasse.collin@tukaani.org> | 2008-08-28 22:53:15 +0300 |
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committer | Lasse Collin <lasse.collin@tukaani.org> | 2008-08-28 22:53:15 +0300 |
commit | 3b34851de1eaf358cf9268922fa0eeed8278d680 (patch) | |
tree | 7bab212af647541df64227a8d350d17a2e789f6b /src/liblzma/lzma/lzma_encoder_init.c | |
parent | Fix test_filter_flags to match the new restriction of lc+lp. (diff) | |
download | xz-3b34851de1eaf358cf9268922fa0eeed8278d680.tar.xz |
Sort of garbage collection commit. :-| Many things are still
broken. API has changed a lot and it will still change a
little more here and there. The command line tool doesn't
have all the required changes to reflect the API changes, so
it's easy to get "internal error" or trigger assertions.
Diffstat (limited to '')
-rw-r--r-- | src/liblzma/lzma/lzma_encoder_init.c | 228 |
1 files changed, 0 insertions, 228 deletions
diff --git a/src/liblzma/lzma/lzma_encoder_init.c b/src/liblzma/lzma/lzma_encoder_init.c deleted file mode 100644 index 21335f95..00000000 --- a/src/liblzma/lzma/lzma_encoder_init.c +++ /dev/null @@ -1,228 +0,0 @@ -/////////////////////////////////////////////////////////////////////////////// -// -/// \file lzma_encoder_init.c -/// \brief Creating, resetting and destroying the LZMA encoder -// -// Copyright (C) 1999-2006 Igor Pavlov -// Copyright (C) 2007 Lasse Collin -// -// This library 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. -// -// This library 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. -// -/////////////////////////////////////////////////////////////////////////////// - -#include "lzma_encoder_private.h" - - -/// \brief Initializes the length encoder -static void -length_encoder_reset(lzma_length_encoder *lencoder, - const uint32_t num_pos_states, const uint32_t table_size) -{ - // NLength::CPriceTableEncoder::SetTableSize() - lencoder->table_size = table_size; - - // NLength::CEncoder::Init() - bit_reset(lencoder->choice); - bit_reset(lencoder->choice2); - - for (size_t pos_state = 0; pos_state < num_pos_states; ++pos_state) { - bittree_reset(lencoder->low[pos_state], LEN_LOW_BITS); - bittree_reset(lencoder->mid[pos_state], LEN_MID_BITS); - } - - bittree_reset(lencoder->high, LEN_HIGH_BITS); - - // NLength::CPriceTableEncoder::UpdateTables() - for (size_t pos_state = 0; pos_state < num_pos_states; ++pos_state) - lencoder->counters[pos_state] = 1; - - return; -} - - -static void -lzma_lzma_encoder_end(lzma_coder *coder, lzma_allocator *allocator) -{ - lzma_lz_encoder_end(&coder->lz, allocator); - lzma_free(coder, allocator); - return; -} - - -extern lzma_ret -lzma_lzma_encoder_init(lzma_next_coder *next, lzma_allocator *allocator, - const lzma_filter_info *filters) -{ - if (next->coder == NULL) { - next->coder = lzma_alloc(sizeof(lzma_coder), allocator); - if (next->coder == NULL) - return LZMA_MEM_ERROR; - - next->coder->next = LZMA_NEXT_CODER_INIT; - next->coder->lz = LZMA_LZ_ENCODER_INIT; - } - - // Validate options that aren't validated elsewhere. - const lzma_options_lzma *options = filters[0].options; - if (options->pos_bits > LZMA_POS_BITS_MAX - || options->fast_bytes < LZMA_FAST_BYTES_MIN - || options->fast_bytes > LZMA_FAST_BYTES_MAX) { - lzma_lzma_encoder_end(next->coder, allocator); - return LZMA_HEADER_ERROR; - } - - // Set compression mode. - switch (options->mode) { - case LZMA_MODE_FAST: - next->coder->best_compression = false; - break; - - case LZMA_MODE_BEST: - next->coder->best_compression = true; - break; - - default: - lzma_lzma_encoder_end(next->coder, allocator); - return LZMA_HEADER_ERROR; - } - - // Initialize literal coder. - { - const lzma_ret ret = lzma_literal_init( - &next->coder->literal_coder, - options->literal_context_bits, - options->literal_pos_bits); - if (ret != LZMA_OK) - return ret; - } - - // Initialize LZ encoder. - { - const lzma_ret ret = lzma_lz_encoder_reset( - &next->coder->lz, allocator, &lzma_lzma_encode, - options->dictionary_size, OPTS, - options->fast_bytes, MATCH_MAX_LEN + 1 + OPTS, - options->match_finder, - options->match_finder_cycles, - options->preset_dictionary, - options->preset_dictionary_size); - if (ret != LZMA_OK) { - lzma_lzma_encoder_end(next->coder, allocator); - return ret; - } - } - - // Set dist_table_size. - { - // Round the dictionary size up to next 2^n. - uint32_t log_size; - for (log_size = 0; (UINT32_C(1) << log_size) - < options->dictionary_size; ++log_size) ; - - next->coder->dist_table_size = log_size * 2; - } - - // Misc FIXME desc - next->coder->align_price_count = UINT32_MAX; - next->coder->match_price_count = UINT32_MAX; - next->coder->dictionary_size = options->dictionary_size; - next->coder->pos_mask = (1U << options->pos_bits) - 1; - next->coder->fast_bytes = options->fast_bytes; - - // Range coder - rc_reset(&next->coder->rc); - - // State - next->coder->state = 0; - next->coder->previous_byte = 0; - for (size_t i = 0; i < REP_DISTANCES; ++i) - next->coder->reps[i] = 0; - - // Bit encoders - for (size_t i = 0; i < STATES; ++i) { - for (size_t j = 0; j <= next->coder->pos_mask; ++j) { - bit_reset(next->coder->is_match[i][j]); - bit_reset(next->coder->is_rep0_long[i][j]); - } - - bit_reset(next->coder->is_rep[i]); - bit_reset(next->coder->is_rep0[i]); - bit_reset(next->coder->is_rep1[i]); - bit_reset(next->coder->is_rep2[i]); - } - - for (size_t i = 0; i < FULL_DISTANCES - END_POS_MODEL_INDEX; ++i) - bit_reset(next->coder->pos_encoders[i]); - - // Bit tree encoders - for (size_t i = 0; i < LEN_TO_POS_STATES; ++i) - bittree_reset(next->coder->pos_slot_encoder[i], POS_SLOT_BITS); - - bittree_reset(next->coder->pos_align_encoder, ALIGN_BITS); - - // Length encoders - length_encoder_reset(&next->coder->match_len_encoder, - 1U << options->pos_bits, - options->fast_bytes + 1 - MATCH_MIN_LEN); - - length_encoder_reset(&next->coder->rep_len_encoder, - 1U << options->pos_bits, - next->coder->fast_bytes + 1 - MATCH_MIN_LEN); - - next->coder->prev_len_encoder = NULL; - - // Misc - next->coder->longest_match_was_found = false; - next->coder->optimum_end_index = 0; - next->coder->optimum_current_index = 0; - next->coder->additional_offset = 0; - - next->coder->now_pos = 0; - next->coder->is_initialized = false; - next->coder->is_flushed = false, - next->coder->write_eopm = true; - - // Initialize the next decoder in the chain, if any. - { - const lzma_ret ret = lzma_next_filter_init(&next->coder->next, - allocator, filters + 1); - if (ret != LZMA_OK) { - lzma_lzma_encoder_end(next->coder, allocator); - return ret; - } - } - - // Initialization successful. Set the function pointers. - next->code = &lzma_lz_encode; - next->end = &lzma_lzma_encoder_end; - - return LZMA_OK; -} - - -extern bool -lzma_lzma_encode_properties(const lzma_options_lzma *options, uint8_t *byte) -{ - if (options->literal_context_bits > LZMA_LITERAL_CONTEXT_BITS_MAX - || options->literal_pos_bits - > LZMA_LITERAL_POS_BITS_MAX - || options->pos_bits > LZMA_POS_BITS_MAX - || options->literal_context_bits - + options->literal_pos_bits - > LZMA_LITERAL_BITS_MAX) - return true; - - *byte = (options->pos_bits * 5 + options->literal_pos_bits) * 9 - + options->literal_context_bits; - assert(*byte <= (4 * 5 + 4) * 9 + 8); - - return false; -} |