7186a2dd86
It in essence refactors the code for both the interpolation filtering and the convolution. This change includes the moving of all the files as well as the changing of the code from vp9_ prefix to vpx_ prefix accordingly, for underneath architectures: (1) x86; (2) arm/neon; and (3) mips/msa. The work on mips/drsp2 will be done in a separate change list. Change-Id: Ic3ce7fb7f81210db7628b373c73553db68793c46
76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/*
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* Copyright (c) 2013 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VP9_COMMON_VP9_SCALE_H_
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#define VP9_COMMON_VP9_SCALE_H_
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#include "vp9/common/vp9_mv.h"
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#include "vpx_dsp/vpx_convolve.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define REF_SCALE_SHIFT 14
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#define REF_NO_SCALE (1 << REF_SCALE_SHIFT)
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#define REF_INVALID_SCALE -1
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struct scale_factors {
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int x_scale_fp; // horizontal fixed point scale factor
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int y_scale_fp; // vertical fixed point scale factor
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int x_step_q4;
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int y_step_q4;
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int (*scale_value_x)(int val, const struct scale_factors *sf);
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int (*scale_value_y)(int val, const struct scale_factors *sf);
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convolve_fn_t predict[2][2][2]; // horiz, vert, avg
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#if CONFIG_VP9_HIGHBITDEPTH
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highbd_convolve_fn_t highbd_predict[2][2][2]; // horiz, vert, avg
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#endif
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};
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MV32 vp9_scale_mv(const MV *mv, int x, int y, const struct scale_factors *sf);
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#if CONFIG_VP9_HIGHBITDEPTH
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void vp9_setup_scale_factors_for_frame(struct scale_factors *sf,
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int other_w, int other_h,
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int this_w, int this_h,
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int use_high);
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#else
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void vp9_setup_scale_factors_for_frame(struct scale_factors *sf,
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int other_w, int other_h,
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int this_w, int this_h);
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#endif
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static INLINE int vp9_is_valid_scale(const struct scale_factors *sf) {
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return sf->x_scale_fp != REF_INVALID_SCALE &&
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sf->y_scale_fp != REF_INVALID_SCALE;
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}
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static INLINE int vp9_is_scaled(const struct scale_factors *sf) {
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return vp9_is_valid_scale(sf) &&
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(sf->x_scale_fp != REF_NO_SCALE || sf->y_scale_fp != REF_NO_SCALE);
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}
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static INLINE int valid_ref_frame_size(int ref_width, int ref_height,
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int this_width, int this_height) {
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return 2 * this_width >= ref_width &&
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2 * this_height >= ref_height &&
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this_width <= 16 * ref_width &&
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this_height <= 16 * ref_height;
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}
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VP9_COMMON_VP9_SCALE_H_
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