mirror of https://git.tukaani.org/xz.git
81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
///////////////////////////////////////////////////////////////////////////////
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//
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/// \file easy_encoder.c
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/// \brief Easy .xz Stream encoder initialization
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//
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// Author: Lasse Collin
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//
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// This file has been put into the public domain.
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// You can do whatever you want with this file.
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//
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///////////////////////////////////////////////////////////////////////////////
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#include "easy_preset.h"
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#include "stream_encoder.h"
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struct lzma_coder_s {
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lzma_next_coder stream_encoder;
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lzma_options_easy opt_easy;
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};
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static lzma_ret
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easy_encode(lzma_coder *coder, lzma_allocator *allocator,
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const uint8_t *restrict in, size_t *restrict in_pos,
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size_t in_size, uint8_t *restrict out,
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size_t *restrict out_pos, size_t out_size, lzma_action action)
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{
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return coder->stream_encoder.code(
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coder->stream_encoder.coder, allocator,
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in, in_pos, in_size, out, out_pos, out_size, action);
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}
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static void
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easy_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
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{
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lzma_next_end(&coder->stream_encoder, allocator);
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lzma_free(coder, allocator);
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return;
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}
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static lzma_ret
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easy_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
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uint32_t preset, lzma_check check)
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{
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lzma_next_coder_init(easy_encoder_init, next, allocator);
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if (next->coder == NULL) {
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next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
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if (next->coder == NULL)
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return LZMA_MEM_ERROR;
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next->code = &easy_encode;
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next->end = &easy_encoder_end;
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next->coder->stream_encoder = LZMA_NEXT_CODER_INIT;
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}
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if (lzma_easy_preset(&next->coder->opt_easy, preset))
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return LZMA_OPTIONS_ERROR;
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return lzma_stream_encoder_init(&next->coder->stream_encoder,
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allocator, next->coder->opt_easy.filters, check);
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}
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extern LZMA_API(lzma_ret)
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lzma_easy_encoder(lzma_stream *strm, uint32_t preset, lzma_check check)
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{
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lzma_next_strm_init(easy_encoder_init, strm, preset, check);
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strm->internal->supported_actions[LZMA_RUN] = true;
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strm->internal->supported_actions[LZMA_SYNC_FLUSH] = true;
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strm->internal->supported_actions[LZMA_FULL_FLUSH] = true;
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strm->internal->supported_actions[LZMA_FINISH] = true;
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return LZMA_OK;
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}
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