104 строки
3.1 KiB
C
104 строки
3.1 KiB
C
/*
|
|
* 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 AV1_COMMON_FILTER_H_
|
|
#define AV1_COMMON_FILTER_H_
|
|
|
|
#include "./aom_config.h"
|
|
#include "aom/aom_integer.h"
|
|
#include "aom_dsp/aom_filter.h"
|
|
#include "aom_ports/mem.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define EIGHTTAP_REGULAR 0
|
|
#define EIGHTTAP_SMOOTH 1
|
|
#define MULTITAP_SHARP 2
|
|
|
|
#if CONFIG_EXT_INTERP
|
|
#define EIGHTTAP_SMOOTH2 3
|
|
#define MULTITAP_SHARP2 4
|
|
|
|
#define MAX_SUBPEL_TAPS 12
|
|
|
|
#define SUPPORT_NONINTERPOLATING_FILTERS 0 /* turn on for experimentation */
|
|
#define SWITCHABLE_FILTERS 5 /* Number of switchable filters */
|
|
#define LOG_SWITCHABLE_FILTERS \
|
|
3 /* (1 << LOG_SWITCHABLE_FILTERS) > SWITCHABLE_FILTERS */
|
|
#else
|
|
#define SWITCHABLE_FILTERS 3 /* Number of switchable filters */
|
|
#define LOG_SWITCHABLE_FILTERS \
|
|
2 /* (1 << LOG_SWITCHABLE_FILTERS) > SWITCHABLE_FILTERS */
|
|
#endif // CONFIG_EXT_INTERP
|
|
|
|
#define USE_TEMPORALFILTER_12TAP 1
|
|
#if USE_TEMPORALFILTER_12TAP
|
|
#define TEMPORALFILTER_12TAP (SWITCHABLE_FILTERS + 1)
|
|
#endif
|
|
|
|
// The codec can operate in four possible inter prediction filter mode:
|
|
// 8-tap, 8-tap-smooth, 8-tap-sharp, and switching between the three.
|
|
|
|
#define BILINEAR (SWITCHABLE_FILTERS)
|
|
#define SWITCHABLE (SWITCHABLE_FILTERS + 1) /* the last one */
|
|
#if CONFIG_DUAL_FILTER
|
|
#define SWITCHABLE_FILTER_CONTEXTS ((SWITCHABLE_FILTERS + 1) * 4)
|
|
#define INTER_FILTER_COMP_OFFSET (SWITCHABLE_FILTERS + 1)
|
|
#define INTER_FILTER_DIR_OFFSET ((SWITCHABLE_FILTERS + 1) * 2)
|
|
#else
|
|
#define SWITCHABLE_FILTER_CONTEXTS (SWITCHABLE_FILTERS + 1)
|
|
#endif
|
|
|
|
typedef uint8_t InterpFilter;
|
|
|
|
#if CONFIG_EXT_INTRA
|
|
typedef enum {
|
|
INTRA_FILTER_LINEAR,
|
|
INTRA_FILTER_8TAP,
|
|
INTRA_FILTER_8TAP_SHARP,
|
|
INTRA_FILTER_8TAP_SMOOTH,
|
|
INTRA_FILTERS,
|
|
} INTRA_FILTER;
|
|
|
|
extern const InterpKernel *av1_intra_filter_kernels[INTRA_FILTERS];
|
|
#endif // CONFIG_EXT_INTRA
|
|
|
|
typedef struct InterpFilterParams {
|
|
const int16_t *filter_ptr;
|
|
uint16_t taps;
|
|
uint16_t subpel_shifts;
|
|
InterpFilter interp_filter;
|
|
} InterpFilterParams;
|
|
|
|
InterpFilterParams av1_get_interp_filter_params(
|
|
const InterpFilter interp_filter);
|
|
|
|
const int16_t *av1_get_interp_filter_kernel(const InterpFilter interp_filter);
|
|
|
|
static INLINE const int16_t *av1_get_interp_filter_subpel_kernel(
|
|
const InterpFilterParams filter_params, const int subpel) {
|
|
return filter_params.filter_ptr + filter_params.taps * subpel;
|
|
}
|
|
|
|
static INLINE int av1_is_interpolating_filter(
|
|
const InterpFilter interp_filter) {
|
|
const InterpFilterParams ip = av1_get_interp_filter_params(interp_filter);
|
|
return (ip.filter_ptr[ip.taps / 2 - 1] == 128);
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
} // extern "C"
|
|
#endif
|
|
|
|
#endif // AV1_COMMON_FILTER_H_
|