diff options
Diffstat (limited to 'Source/ThirdParty/brotli/dec/state.c')
-rw-r--r-- | Source/ThirdParty/brotli/dec/state.c | 70 |
1 files changed, 31 insertions, 39 deletions
diff --git a/Source/ThirdParty/brotli/dec/state.c b/Source/ThirdParty/brotli/dec/state.c index 358e08d3d..554313d8f 100644 --- a/Source/ThirdParty/brotli/dec/state.c +++ b/Source/ThirdParty/brotli/dec/state.c @@ -8,17 +8,13 @@ #include <stdlib.h> /* free, malloc */ +#include <brotli/types.h> #include "./huffman.h" -#include "./types.h" #if defined(__cplusplus) || defined(c_plusplus) extern "C" { #endif -/* Declared in decode.h */ -int BrotliStateIsStreamStart(const BrotliState* s); -int BrotliStateIsStreamEnd(const BrotliState* s); - static void* DefaultAllocFunc(void* opaque, size_t size) { BROTLI_UNUSED(opaque); return malloc(size); @@ -29,11 +25,11 @@ static void DefaultFreeFunc(void* opaque, void* address) { free(address); } -void BrotliStateInit(BrotliState* s) { - BrotliStateInitWithCustomAllocators(s, 0, 0, 0); +void BrotliDecoderStateInit(BrotliDecoderState* s) { + BrotliDecoderStateInitWithCustomAllocators(s, 0, 0, 0); } -void BrotliStateInitWithCustomAllocators(BrotliState* s, +void BrotliDecoderStateInitWithCustomAllocators(BrotliDecoderState* s, brotli_alloc_func alloc_func, brotli_free_func free_func, void* opaque) { if (!alloc_func) { s->alloc_func = DefaultAllocFunc; @@ -45,6 +41,8 @@ void BrotliStateInitWithCustomAllocators(BrotliState* s, s->memory_manager_opaque = opaque; } + s->error_code = 0; /* BROTLI_DECODER_NO_ERROR */ + BrotliInitBitReader(&s->br); s->state = BROTLI_STATE_UNINITED; s->substate_metablock_header = BROTLI_STATE_METABLOCK_HEADER_NONE; @@ -55,6 +53,8 @@ void BrotliStateInitWithCustomAllocators(BrotliState* s, s->substate_decode_uint8 = BROTLI_STATE_DECODE_UINT8_NONE; s->substate_read_block_length = BROTLI_STATE_READ_BLOCK_LENGTH_NONE; + s->dictionary = BrotliGetDictionary(); + s->buffer_length = 0; s->loop_counter = 0; s->pos = 0; @@ -64,6 +64,9 @@ void BrotliStateInitWithCustomAllocators(BrotliState* s, s->block_type_trees = NULL; s->block_len_trees = NULL; s->ringbuffer = NULL; + s->ringbuffer_size = 0; + s->new_ringbuffer_size = 0; + s->ringbuffer_mask = 0; s->context_map = NULL; s->context_modes = NULL; @@ -80,10 +83,12 @@ void BrotliStateInitWithCustomAllocators(BrotliState* s, s->distance_hgroup.codes = NULL; s->distance_hgroup.htrees = NULL; - s->custom_dict = NULL; - s->custom_dict_size = 0; - s->is_last_metablock = 0; + s->is_uncompressed = 0; + s->is_metadata = 0; + s->should_wrap_ringbuffer = 0; + s->canny_ringbuffer_allocation = 1; + s->window_bits = 0; s->max_distance = 0; s->dist_rb[0] = 16; @@ -97,10 +102,10 @@ void BrotliStateInitWithCustomAllocators(BrotliState* s, /* Make small negative indexes addressable. */ s->symbol_lists = &s->symbols_lists_array[BROTLI_HUFFMAN_MAX_CODE_LENGTH + 1]; - s->mtf_upper_bound = 255; + s->mtf_upper_bound = 63; } -void BrotliStateMetablockBegin(BrotliState* s) { +void BrotliDecoderStateMetablockBegin(BrotliDecoderState* s) { s->meta_block_remaining_len = 0; s->block_length[0] = 1U << 28; s->block_length[1] = 1U << 28; @@ -131,48 +136,35 @@ void BrotliStateMetablockBegin(BrotliState* s) { s->distance_hgroup.htrees = NULL; } -void BrotliStateCleanupAfterMetablock(BrotliState* s) { +void BrotliDecoderStateCleanupAfterMetablock(BrotliDecoderState* s) { BROTLI_FREE(s, s->context_modes); BROTLI_FREE(s, s->context_map); BROTLI_FREE(s, s->dist_context_map); - - BrotliHuffmanTreeGroupRelease(s, &s->literal_hgroup); - BrotliHuffmanTreeGroupRelease(s, &s->insert_copy_hgroup); - BrotliHuffmanTreeGroupRelease(s, &s->distance_hgroup); + BROTLI_FREE(s, s->literal_hgroup.htrees); + BROTLI_FREE(s, s->insert_copy_hgroup.htrees); + BROTLI_FREE(s, s->distance_hgroup.htrees); } -void BrotliStateCleanup(BrotliState* s) { - BrotliStateCleanupAfterMetablock(s); +void BrotliDecoderStateCleanup(BrotliDecoderState* s) { + BrotliDecoderStateCleanupAfterMetablock(s); BROTLI_FREE(s, s->ringbuffer); BROTLI_FREE(s, s->block_type_trees); } -int BrotliStateIsStreamStart(const BrotliState* s) { - return (s->state == BROTLI_STATE_UNINITED && - BrotliGetAvailableBits(&s->br) == 0); -} - -int BrotliStateIsStreamEnd(const BrotliState* s) { - return s->state == BROTLI_STATE_DONE; -} - -void BrotliHuffmanTreeGroupInit(BrotliState* s, HuffmanTreeGroup* group, - uint32_t alphabet_size, uint32_t ntrees) { +BROTLI_BOOL BrotliDecoderHuffmanTreeGroupInit(BrotliDecoderState* s, + HuffmanTreeGroup* group, uint32_t alphabet_size, uint32_t ntrees) { /* Pack two allocations into one */ const size_t max_table_size = kMaxHuffmanTableSize[(alphabet_size + 31) >> 5]; const size_t code_size = sizeof(HuffmanCode) * ntrees * max_table_size; const size_t htree_size = sizeof(HuffmanCode*) * ntrees; - char* p = (char*)BROTLI_ALLOC(s, code_size + htree_size); + /* Pointer alignment is, hopefully, wider than sizeof(HuffmanCode). */ + HuffmanCode** p = (HuffmanCode**)BROTLI_ALLOC(s, code_size + htree_size); group->alphabet_size = (uint16_t)alphabet_size; group->num_htrees = (uint16_t)ntrees; - group->codes = (HuffmanCode*)p; - group->htrees = (HuffmanCode**)(p + code_size); -} - -void BrotliHuffmanTreeGroupRelease(BrotliState* s, HuffmanTreeGroup* group) { - BROTLI_FREE(s, group->codes); - group->htrees = NULL; + group->htrees = p; + group->codes = (HuffmanCode*)(&p[ntrees]); + return !!p; } #if defined(__cplusplus) || defined(c_plusplus) |