1 /*
2  * Copyright (c) 2016, Alliance for Open Media. All rights reserved
3  *
4  * This source code is subject to the terms of the BSD 2 Clause License and
5  * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6  * was not distributed with this source code in the LICENSE file, you can
7  * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8  * Media Patent License 1.0 was not distributed with this source code in the
9  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10  */
11 
12 #include <string.h>
13 #include "aom_dsp/bitwriter.h"
14 
aom_start_encode(aom_writer * w,uint8_t * source)15 void aom_start_encode(aom_writer *w, uint8_t *source) {
16   w->buffer = source;
17   w->pos = 0;
18   od_ec_enc_init(&w->ec, 62025);
19 }
20 
aom_stop_encode(aom_writer * w)21 int aom_stop_encode(aom_writer *w) {
22   int nb_bits;
23   uint32_t bytes;
24   unsigned char *data;
25   data = od_ec_enc_done(&w->ec, &bytes);
26   nb_bits = od_ec_enc_tell(&w->ec);
27   memcpy(w->buffer, data, bytes);
28   w->pos = bytes;
29   od_ec_enc_clear(&w->ec);
30   return nb_bits;
31 }
32