45 строки
1.3 KiB
C
45 строки
1.3 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 <assert.h>
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#include "./dkboolwriter.h"
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static INLINE void aom_dk_write_bit(aom_dk_writer *w, int bit) {
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aom_dk_write(w, bit, 128); // aom_prob_half
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}
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void aom_dk_start_encode(aom_dk_writer *br, uint8_t *source) {
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br->lowvalue = 0;
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br->range = 255;
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br->count = -24;
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br->buffer = source;
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br->pos = 0;
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aom_dk_write_bit(br, 0);
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}
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void aom_dk_stop_encode(aom_dk_writer *br) {
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int i;
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#if CONFIG_BITSTREAM_DEBUG
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bitstream_queue_set_skip_write(1);
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#endif // CONFIG_BITSTREAM_DEBUG
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for (i = 0; i < 32; i++) aom_dk_write_bit(br, 0);
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#if CONFIG_BITSTREAM_DEBUG
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bitstream_queue_set_skip_write(0);
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#endif // CONFIG_BITSTREAM_DEBUG
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// Ensure there's no ambigous collision with any index marker bytes
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if ((br->buffer[br->pos - 1] & 0xe0) == 0xc0) br->buffer[br->pos++] = 0;
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}
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