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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 AV1_COMMON_AV1_CONVOLVE_H_
#define AV1_COMMON_AV1_CONVOLVE_H_
#include "av1/common/filter.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef enum CONVOLVE_OPT {
// indicate the results in dst buf is rounded by FILTER_BITS or not
CONVOLVE_OPT_ROUND,
CONVOLVE_OPT_NO_ROUND,
} CONVOLVE_OPT;
typedef int32_t CONV_BUF_TYPE;
typedef struct ConvolveParams {
int ref;
int do_average;
CONVOLVE_OPT round;
CONV_BUF_TYPE *dst;
int dst_stride;
int round_0;
int round_1;
int plane;
int do_post_rounding;
} ConvolveParams;
static INLINE ConvolveParams get_conv_params(int ref, int do_average,
int plane) {
ConvolveParams conv_params;
conv_params.ref = ref;
conv_params.do_average = do_average;
conv_params.round = CONVOLVE_OPT_ROUND;
conv_params.plane = plane;
conv_params.do_post_rounding = 0;
return conv_params;
}
#if CONFIG_DUAL_FILTER && USE_EXTRA_FILTER
static INLINE void av1_convolve_filter_params_fixup_1212(
const InterpFilterParams *params_x, InterpFilterParams *params_y) {
if (params_x->interp_filter == MULTITAP_SHARP &&
params_y->interp_filter == MULTITAP_SHARP) {
// Avoid two directions both using 12-tap filter.
// This will reduce hardware implementation cost.
*params_y = av1_get_interp_filter_params(EIGHTTAP_SHARP);
}
}
#endif
static INLINE void av1_get_convolve_filter_params(
InterpFilters interp_filters, int avoid_1212, InterpFilterParams *params_x,
InterpFilterParams *params_y) {
#if CONFIG_DUAL_FILTER
InterpFilter filter_x = av1_extract_interp_filter(interp_filters, 1);
InterpFilter filter_y = av1_extract_interp_filter(interp_filters, 0);
#else
InterpFilter filter_x = av1_extract_interp_filter(interp_filters, 0);
InterpFilter filter_y = av1_extract_interp_filter(interp_filters, 0);
#endif
*params_x = av1_get_interp_filter_params(filter_x);
*params_y = av1_get_interp_filter_params(filter_y);
if (avoid_1212) {
#if CONFIG_DUAL_FILTER && USE_EXTRA_FILTER
convolve_filter_params_fixup_1212(params_x, params_y);
#endif
}
}
struct AV1Common;
void av1_convolve_init(struct AV1Common *cm);
#if CONFIG_CONVOLVE_ROUND
void av1_convolve_2d_facade(const uint8_t *src, int src_stride, uint8_t *dst,
int dst_stride, int w, int h,
InterpFilters interp_filters, const int subpel_x_q4,
int x_step_q4, const int subpel_y_q4, int y_step_q4,
int scaled, ConvolveParams *conv_params);
static INLINE ConvolveParams get_conv_params_no_round(int ref, int do_average,
int plane, int32_t *dst,
int dst_stride) {
ConvolveParams conv_params;
conv_params.ref = ref;
conv_params.do_average = do_average;
conv_params.round = CONVOLVE_OPT_NO_ROUND;
#if CONFIG_COMPOUND_ROUND
conv_params.round_0 = FILTER_BITS;
#else
conv_params.round_0 = 5;
#endif
conv_params.round_1 = 0;
conv_params.dst = dst;
conv_params.dst_stride = dst_stride;
conv_params.plane = plane;
conv_params.do_post_rounding = 0;
return conv_params;
}
#if CONFIG_HIGHBITDEPTH
void av1_highbd_convolve_2d_facade(const uint8_t *src8, int src_stride,
uint8_t *dst, int dst_stride, int w, int h,
InterpFilters interp_filters,
const int subpel_x_q4, int x_step_q4,
const int subpel_y_q4, int y_step_q4,
int scaled, ConvolveParams *conv_params,
int bd);
#endif
#endif // CONFIG_CONVOLVE_ROUND
void av1_convolve(const uint8_t *src, int src_stride, uint8_t *dst,
int dst_stride, int w, int h, InterpFilters interp_filters,
const int subpel_x, int xstep, const int subpel_y, int ystep,
ConvolveParams *conv_params);
void av1_convolve_c(const uint8_t *src, int src_stride, uint8_t *dst,
int dst_stride, int w, int h, InterpFilters interp_filters,
const int subpel_x, int xstep, const int subpel_y,
int ystep, ConvolveParams *conv_params);
void av1_convolve_scale(const uint8_t *src, int src_stride, uint8_t *dst,
int dst_stride, int w, int h,
InterpFilters interp_filters, const int subpel_x,
int xstep, const int subpel_y, int ystep,
ConvolveParams *conv_params);
#if CONFIG_HIGHBITDEPTH
void av1_highbd_convolve(const uint8_t *src, int src_stride, uint8_t *dst,
int dst_stride, int w, int h,
InterpFilters interp_filters, const int subpel_x,
int xstep, const int subpel_y, int ystep, int avg,
int bd);
void av1_highbd_convolve_scale(const uint8_t *src, int src_stride, uint8_t *dst,
int dst_stride, int w, int h,
InterpFilters interp_filters, const int subpel_x,
int xstep, const int subpel_y, int ystep,
int avg, int bd);
#endif // CONFIG_HIGHBITDEPTH
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AV1_COMMON_AV1_CONVOLVE_H_
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