43 строки
1.4 KiB
C
43 строки
1.4 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#include <string.h>
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#include "aom_dsp/buf_ans.h"
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#include "aom_mem/aom_mem.h"
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#include "aom/internal/aom_codec_internal.h"
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void aom_buf_ans_alloc(struct BufAnsCoder *c,
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struct aom_internal_error_info *error, int size_hint) {
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c->error = error;
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c->size = size_hint;
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AOM_CHECK_MEM_ERROR(error, c->buf, aom_malloc(c->size * sizeof(*c->buf)));
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// Initialize to overfull to trigger the assert in write.
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c->offset = c->size + 1;
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}
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void aom_buf_ans_free(struct BufAnsCoder *c) {
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aom_free(c->buf);
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c->buf = NULL;
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c->size = 0;
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}
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void aom_buf_ans_grow(struct BufAnsCoder *c) {
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struct buffered_ans_symbol *new_buf = NULL;
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int new_size = c->size * 2;
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AOM_CHECK_MEM_ERROR(c->error, new_buf,
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aom_malloc(new_size * sizeof(*new_buf)));
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memcpy(new_buf, c->buf, c->size * sizeof(*c->buf));
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aom_free(c->buf);
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c->buf = new_buf;
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c->size = new_size;
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}
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