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