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/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#ifndef AOM_UTIL_DEBUG_UTIL_H_
#define AOM_UTIL_DEBUG_UTIL_H_
#include "./aom_config.h"
#include "aom_dsp/prob.h"
#ifdef __cplusplus
extern "C" {
#endif
/* This is a debug tool used to detect bitstream error. On encoder side, it
* pushes each bit and probability into a queue before the bit is written into
* the Arithmetic coder. On decoder side, whenever a bit is read out from the
* Arithmetic coder, it pops out the reference bit and probability from the
* queue as well. If the two results do not match, this debug tool will report
* an error. This tool can be used to pin down the bitstream error precisely.
* By combining gdb's backtrace method, we can detect which module causes the
* bitstream error. */
int bitstream_queue_get_write(void);
int bitstream_queue_get_read(void);
void bitstream_queue_record_write(void);
void bitstream_queue_reset_write(void);
void bitstream_queue_pop(int *result, aom_cdf_prob *cdf, int *nsymbs);
void bitstream_queue_push(int result, const aom_cdf_prob *cdf, int nsymbs);
void bitstream_queue_set_skip_write(int skip);
void bitstream_queue_set_skip_read(int skip);
void bitstream_queue_set_frame_write(int frame_idx);
int bitstream_queue_get_frame_write(void);
void bitstream_queue_set_frame_read(int frame_idx);
int bitstream_queue_get_frame_read(void);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AOM_UTIL_DEBUG_UTIL_H_
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