1 /* 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include <assert.h> 12 13 #include "./bitwriter.h" 14 vpx_start_encode(vpx_writer * br,uint8_t * source)15void vpx_start_encode(vpx_writer *br, uint8_t *source) { 16 br->lowvalue = 0; 17 br->range = 255; 18 br->count = -24; 19 br->buffer = source; 20 br->pos = 0; 21 vpx_write_bit(br, 0); 22 } 23 vpx_stop_encode(vpx_writer * br)24void vpx_stop_encode(vpx_writer *br) { 25 int i; 26 27 for (i = 0; i < 32; i++) 28 vpx_write_bit(br, 0); 29 30 // Ensure there's no ambigous collision with any index marker bytes 31 if ((br->buffer[br->pos - 1] & 0xe0) == 0xc0) 32 br->buffer[br->pos++] = 0; 33 } 34 35