Files
vpx/aom_dsp/dkboolwriter.c
Nathan E. Egge e691a24cff Refactor bitreader and bitwriter wrapper.
Move code for reading and writing literals and reading trees to use
just the aom_read_bit() and aom_write_bit() function calls.

Change-Id: Id2bced5f0125a5558030a813c51c3d79e5701873
(cherry picked from aom/master commit bc1ac15846a200272551699d45457039535e56b2)
2016-09-28 12:07:00 -07:00

44 lines
1.2 KiB
C

/*
* Copyright (c) 2010 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 <assert.h>
#include "./dkboolwriter.h"
static INLINE void aom_dk_write_bit(aom_dk_writer *w, int bit) {
aom_dk_write(w, bit, 128); // aom_prob_half
}
void aom_dk_start_encode(aom_dk_writer *br, uint8_t *source) {
br->lowvalue = 0;
br->range = 255;
br->count = -24;
br->buffer = source;
br->pos = 0;
aom_dk_write_bit(br, 0);
}
void aom_dk_stop_encode(aom_dk_writer *br) {
int i;
#if CONFIG_BITSTREAM_DEBUG
bitstream_queue_set_skip_write(1);
#endif // CONFIG_BITSTREAM_DEBUG
for (i = 0; i < 32; i++) aom_dk_write_bit(br, 0);
#if CONFIG_BITSTREAM_DEBUG
bitstream_queue_set_skip_write(0);
#endif // CONFIG_BITSTREAM_DEBUG
// Ensure there's no ambigous collision with any index marker bytes
if ((br->buffer[br->pos - 1] & 0xe0) == 0xc0) br->buffer[br->pos++] = 0;
}