ref: 9a81785e4228a9cbf944dcf94127f8ec29bf9b6d
dir: /vpx_util/vpx_debug_util.h/
/*
* Copyright (c) 2019 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.
*/
#ifndef VPX_VPX_UTIL_VPX_DEBUG_UTIL_H_
#define VPX_VPX_UTIL_VPX_DEBUG_UTIL_H_
#include "./vpx_config.h"
#include "vpx_dsp/prob.h"
#ifdef __cplusplus
extern "C" {
#endif
#if CONFIG_BITSTREAM_DEBUG
/* 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. */
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);
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, int *prob);
void bitstream_queue_push(int result, const int prob);
void bitstream_queue_set_skip_write(int skip);
void bitstream_queue_set_skip_read(int skip);
#endif // CONFIG_BITSTREAM_DEBUG
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VPX_VPX_UTIL_VPX_DEBUG_UTIL_H_