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Import aom library

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This is the reference implementation for the Alliance for Open Media's av1 video code.

The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.
This commit is contained in:
trav90 2018-10-15 21:45:30 -05:00 • committed by Roy Tam
commit edc8d83307
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87
third_party/aom/aom_dsp/daalaboolwriter.h vendored Normal file
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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_DSP_DAALABOOLWRITER_H_
#define AOM_DSP_DAALABOOLWRITER_H_
#include <stdio.h>
#include "aom_dsp/entenc.h"
#include "aom_dsp/prob.h"
#if CONFIG_BITSTREAM_DEBUG
#include "aom_util/debug_util.h"
#endif // CONFIG_BITSTREAM_DEBUG
#ifdef __cplusplus
extern "C" {
#endif
struct daala_writer {
unsigned int pos;
uint8_t *buffer;
od_ec_enc ec;
};
typedef struct daala_writer daala_writer;
void aom_daala_start_encode(daala_writer *w, uint8_t *buffer);
void aom_daala_stop_encode(daala_writer *w);
static INLINE void aom_daala_write(daala_writer *w, int bit, int prob) {
#if CONFIG_EC_SMALLMUL
int p = (0x7FFFFF - (prob << 15) + prob) >> 8;
#else
int p = ((prob << 15) + 256 - prob) >> 8;
#endif
#if CONFIG_BITSTREAM_DEBUG
aom_cdf_prob cdf[2] = { (aom_cdf_prob)p, 32767 };
/*int queue_r = 0;
int frame_idx_r = 0;
int queue_w = bitstream_queue_get_write();
int frame_idx_w = bitstream_queue_get_frame_write();
if (frame_idx_w == frame_idx_r && queue_w == queue_r) {
fprintf(stderr, "\n *** bitstream queue at frame_idx_w %d queue_w %d\n",
frame_idx_w, queue_w);
}*/
bitstream_queue_push(bit, cdf, 2);
#endif
od_ec_encode_bool_q15(&w->ec, bit, p);
}
#if CONFIG_RAWBITS
static INLINE void aom_daala_write_bit(daala_writer *w, int bit) {
od_ec_enc_bits(&w->ec, bit, 1);
}
#endif
static INLINE void daala_write_symbol(daala_writer *w, int symb,
const aom_cdf_prob *cdf, int nsymbs) {
#if CONFIG_BITSTREAM_DEBUG
/*int queue_r = 0;
int frame_idx_r = 0;
int queue_w = bitstream_queue_get_write();
int frame_idx_w = bitstream_queue_get_frame_write();
if (frame_idx_w == frame_idx_r && queue_w == queue_r) {
fprintf(stderr, "\n *** bitstream queue at frame_idx_w %d queue_w %d\n",
frame_idx_w, queue_w);
}*/
bitstream_queue_push(symb, cdf, nsymbs);
#endif
od_ec_encode_cdf_q15(&w->ec, symb, cdf, nsymbs);
}
#ifdef __cplusplus
} // extern "C"
#endif
#endif