42 строки
1.3 KiB
C
42 строки
1.3 KiB
C
/*
|
|
* Copyright (c) 2016 The WebM project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#include <string.h>
|
|
|
|
#include "vp10/common/common.h"
|
|
#include "vp10/encoder/buf_ans.h"
|
|
#include "vp10/encoder/encoder.h"
|
|
#include "vpx_mem/vpx_mem.h"
|
|
|
|
void vp10_buf_ans_alloc(struct BufAnsCoder *c, struct VP10Common *cm,
|
|
int size_hint) {
|
|
c->cm = cm;
|
|
c->size = size_hint;
|
|
CHECK_MEM_ERROR(cm, c->buf, vpx_malloc(c->size * sizeof(*c->buf)));
|
|
// Initialize to overfull to trigger the assert in write.
|
|
c->offset = c->size + 1;
|
|
}
|
|
|
|
void vp10_buf_ans_free(struct BufAnsCoder *c) {
|
|
vpx_free(c->buf);
|
|
c->buf = NULL;
|
|
c->size = 0;
|
|
}
|
|
|
|
void vp10_buf_ans_grow(struct BufAnsCoder *c) {
|
|
struct buffered_ans_symbol *new_buf = NULL;
|
|
int new_size = c->size * 2;
|
|
CHECK_MEM_ERROR(c->cm, new_buf, vpx_malloc(new_size * sizeof(*new_buf)));
|
|
memcpy(new_buf, c->buf, c->size * sizeof(*c->buf));
|
|
vpx_free(c->buf);
|
|
c->buf = new_buf;
|
|
c->size = new_size;
|
|
}
|