lzma_raw_decoder(lzma_stream *strm, const lzma_filter *options) { lzma_next_strm_init(lzma_raw_decoder_init, strm, options); strm->internal->supported_actions[LZMA_RUN] = true; strm->internal->supported_actions[LZMA_FINISH] = true; return LZMA_OK; }
lzma_raw_encoder(lzma_stream *strm, const lzma_filter *options) { lzma_next_strm_init(lzma_raw_coder_init, strm, options, (lzma_filter_find)(&encoder_find), true); strm->internal->supported_actions[LZMA_RUN] = true; strm->internal->supported_actions[LZMA_SYNC_FLUSH] = true; strm->internal->supported_actions[LZMA_FINISH] = true; return LZMA_OK; }
static lzma_ret stream_encoder_init(lzma_next_coder *next, const lzma_allocator *allocator, const lzma_filter *filters, lzma_check check) { lzma_next_coder_init(&stream_encoder_init, next, allocator); if (filters == NULL) return LZMA_PROG_ERROR; if (next->coder == NULL) { next->coder = lzma_alloc(sizeof(lzma_coder), allocator); if (next->coder == NULL) return LZMA_MEM_ERROR; next->code = &stream_encode; next->end = &stream_encoder_end; next->update = &stream_encoder_update; next->coder->filters[0].id = LZMA_VLI_UNKNOWN; next->coder->block_encoder = LZMA_NEXT_CODER_INIT; next->coder->index_encoder = LZMA_NEXT_CODER_INIT; next->coder->index = NULL; } // Basic initializations next->coder->sequence = SEQ_STREAM_HEADER; next->coder->block_options.version = 0; next->coder->block_options.check = check; // Initialize the Index lzma_index_end(next->coder->index, allocator); next->coder->index = lzma_index_init(allocator); if (next->coder->index == NULL) return LZMA_MEM_ERROR; // Encode the Stream Header lzma_stream_flags stream_flags = { .version = 0, .check = check, }; return_if_error(lzma_stream_header_encode( &stream_flags, next->coder->buffer)); next->coder->buffer_pos = 0; next->coder->buffer_size = LZMA_STREAM_HEADER_SIZE; // Initialize the Block encoder. This way we detect unsupported // filter chains when initializing the Stream encoder instead of // giving an error after Stream Header has already written out. return stream_encoder_update( next->coder, allocator, filters, NULL); } extern LZMA_API(lzma_ret) lzma_stream_encoder(lzma_stream *strm, const lzma_filter *filters, lzma_check check) { lzma_next_strm_init(stream_encoder_init, strm, filters, check); strm->internal->supported_actions[LZMA_RUN] = true; strm->internal->supported_actions[LZMA_SYNC_FLUSH] = true; strm->internal->supported_actions[LZMA_FULL_FLUSH] = true; strm->internal->supported_actions[LZMA_FINISH] = true; return LZMA_OK; }