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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_AOM_DSP_DAALABOOLREADER_H_
#define AOM_AOM_DSP_DAALABOOLREADER_H_
#include "aom/aom_integer.h"
#include "aom_dsp/entdec.h"
#include "aom_dsp/prob.h"
#if CONFIG_ACCOUNTING
#include "av1/decoder/accounting.h"
#endif
#if CONFIG_BITSTREAM_DEBUG
#include <stdio.h>
#include "aom_util/debug_util.h"
#endif // CONFIG_BITSTREAM_DEBUG
#ifdef __cplusplus
extern "C" {
#endif
struct daala_reader {
const uint8_t *buffer;
const uint8_t *buffer_end;
od_ec_dec ec;
#if CONFIG_ACCOUNTING
Accounting *accounting;
#endif
uint8_t allow_update_cdf;
};
typedef struct daala_reader daala_reader;
int aom_daala_reader_init(daala_reader *r, const uint8_t *buffer, int size);
const uint8_t *aom_daala_reader_find_begin(daala_reader *r);
const uint8_t *aom_daala_reader_find_end(daala_reader *r);
uint32_t aom_daala_reader_tell(const daala_reader *r);
uint32_t aom_daala_reader_tell_frac(const daala_reader *r);
// Returns true if the reader has tried to decode more data from the buffer
// than was actually provided.
int aom_daala_reader_has_overflowed(const daala_reader *r);
static INLINE int aom_daala_read(daala_reader *r, int prob) {
int bit;
int p = (0x7FFFFF - (prob << 15) + prob) >> 8;
#if CONFIG_BITSTREAM_DEBUG
/*{
const int queue_r = bitstream_queue_get_read();
const int frame_idx = bitstream_queue_get_frame_read();
if (frame_idx == 0 && queue_r == 0) {
fprintf(stderr, "\n *** bitstream queue at frame_idx_r %d queue_r %d\n",
frame_idx, queue_r);
}
}*/
#endif
bit = od_ec_decode_bool_q15(&r->ec, p);
#if CONFIG_BITSTREAM_DEBUG
{
int i;
int ref_bit, ref_nsymbs;
aom_cdf_prob ref_cdf[16];
const int queue_r = bitstream_queue_get_read();
const int frame_idx = bitstream_queue_get_frame_read();
bitstream_queue_pop(&ref_bit, ref_cdf, &ref_nsymbs);
if (ref_nsymbs != 2) {
fprintf(stderr,
"\n *** [bit] nsymbs error, frame_idx_r %d nsymbs %d ref_nsymbs "
"%d queue_r %d\n",
frame_idx, 2, ref_nsymbs, queue_r);
assert(0);
}
if ((ref_nsymbs != 2) || (ref_cdf[0] != (aom_cdf_prob)p) ||
(ref_cdf[1] != 32767)) {
fprintf(stderr,
"\n *** [bit] cdf error, frame_idx_r %d cdf {%d, %d} ref_cdf {%d",
frame_idx, p, 32767, ref_cdf[0]);
for (i = 1; i < ref_nsymbs; ++i) fprintf(stderr, ", %d", ref_cdf[i]);
fprintf(stderr, "} queue_r %d\n", queue_r);
assert(0);
}
if (bit != ref_bit) {
fprintf(stderr,
"\n *** [bit] symb error, frame_idx_r %d symb %d ref_symb %d "
"queue_r %d\n",
frame_idx, bit, ref_bit, queue_r);
assert(0);
}
}
#endif
return bit;
}
static INLINE int aom_daala_reader_has_error(daala_reader *r) {
return r->ec.error;
}
static INLINE int daala_read_symbol(daala_reader *r, const aom_cdf_prob *cdf,
int nsymbs) {
int symb;
assert(cdf != NULL);
symb = od_ec_decode_cdf_q15(&r->ec, cdf, nsymbs);
#if CONFIG_BITSTREAM_DEBUG
{
int i;
int cdf_error = 0;
int ref_symb, ref_nsymbs;
aom_cdf_prob ref_cdf[16];
const int queue_r = bitstream_queue_get_read();
const int frame_idx = bitstream_queue_get_frame_read();
bitstream_queue_pop(&ref_symb, ref_cdf, &ref_nsymbs);
if (nsymbs != ref_nsymbs) {
fprintf(stderr,
"\n *** nsymbs error, frame_idx_r %d nsymbs %d ref_nsymbs %d "
"queue_r %d\n",
frame_idx, nsymbs, ref_nsymbs, queue_r);
cdf_error = 0;
assert(0);
} else {
for (i = 0; i < nsymbs; ++i)
if (cdf[i] != ref_cdf[i]) cdf_error = 1;
}
if (cdf_error) {
fprintf(stderr, "\n *** cdf error, frame_idx_r %d cdf {%d", frame_idx,
cdf[0]);
for (i = 1; i < nsymbs; ++i) fprintf(stderr, ", %d", cdf[i]);
fprintf(stderr, "} ref_cdf {%d", ref_cdf[0]);
for (i = 1; i < ref_nsymbs; ++i) fprintf(stderr, ", %d", ref_cdf[i]);
fprintf(stderr, "} queue_r %d\n", queue_r);
assert(0);
}
if (symb != ref_symb) {
fprintf(
stderr,
"\n *** symb error, frame_idx_r %d symb %d ref_symb %d queue_r %d\n",
frame_idx, symb, ref_symb, queue_r);
assert(0);
}
}
#endif
return symb;
}
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AOM_AOM_DSP_DAALABOOLREADER_H_
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