aom/av1/common/pvq_state.c

54 строки
1.6 KiB
C

/*
* Copyright (c) 2001-2016, 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.
*/
#include "av1/common/pvq_state.h"
#include "av1/common/odintrin.h"
void od_adapt_ctx_reset(od_adapt_ctx *adapt, int is_keyframe) {
int i;
int pli;
od_adapt_pvq_ctx_reset(&adapt->pvq, is_keyframe);
adapt->skip_increment = 128;
OD_CDFS_INIT(adapt->skip_cdf, adapt->skip_increment >> 2);
for (pli = 0; pli < OD_NPLANES_MAX; pli++) {
generic_model_init(&adapt->model_dc[pli]);
for (i = 0; i < OD_TXSIZES; i++) {
adapt->ex_g[pli][i] = 8;
}
for (i = 0; i < 4; i++) {
int j;
for (j = 0; j < 3; j++) {
adapt->ex_dc[pli][i][j] = pli > 0 ? 8 : 32768;
}
}
}
}
void od_init_skipped_coeffs(int16_t *d, int16_t *pred, int is_keyframe, int bo,
int n, int w) {
int i;
int j;
if (is_keyframe) {
for (i = 0; i < n; i++) {
for (j = 0; j < n; j++) {
/* skip DC */
if (i || j) d[bo + i * w + j] = 0;
}
}
} else {
for (i = 0; i < n; i++) {
for (j = 0; j < n; j++) {
d[bo + i * w + j] = pred[i * n + j];
}
}
}
}