90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
/*
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* Copyright (c) 2010 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_MV_H_
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#define VP9_COMMON_VP9_MV_H_
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#include "vpx/vpx_integer.h"
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#include "vp9/common/vp9_common.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct mv {
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int16_t row;
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int16_t col;
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} MV;
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typedef union int_mv {
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uint32_t as_int;
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MV as_mv;
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} int_mv; /* facilitates faster equality tests and copies */
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typedef struct mv32 {
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int32_t row;
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int32_t col;
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} MV32;
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static INLINE int is_zero_mv(const MV *mv) {
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return *((const uint32_t *)mv) == 0;
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}
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static INLINE int is_equal_mv(const MV *a, const MV *b) {
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return *((const uint32_t *)a) == *((const uint32_t *)b);
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}
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static INLINE void clamp_mv(MV *mv, int min_col, int max_col,
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int min_row, int max_row) {
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mv->col = clamp(mv->col, min_col, max_col);
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mv->row = clamp(mv->row, min_row, max_row);
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}
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#if CONFIG_GLOBAL_MOTION
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#define MAX_GLOBAL_MOTION_MODELS 1
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#define ZOOM_PRECISION_BITS 11
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#define ROTATION_PRECISION_BITS 11
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#define ABS_ZOOM_BITS 11
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#define ABS_ROTATION_BITS 11
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#define ABS_TRANSLATION_BITS 11
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typedef enum {
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GLOBAL_ZERO = 0,
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GLOBAL_TRANSLATION = 1,
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GLOBAL_ROTZOOM = 2,
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GLOBAL_MOTION_TYPES
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} GLOBAL_MOTION_TYPE;
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// Currently this is specialized for rotzoom model only
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typedef struct {
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GLOBAL_MOTION_TYPE gmtype;
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int rotation; // positive or negative rotation angle in degrees
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int zoom; // this is actually the zoom multiplier minus 1
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int_mv mv;
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} Global_Motion_Params;
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static INLINE GLOBAL_MOTION_TYPE get_gmtype(const Global_Motion_Params *gm) {
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if (gm->rotation == 0 && gm->zoom == 0) {
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return (gm->mv.as_int == 0 ? GLOBAL_ZERO : GLOBAL_TRANSLATION);
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} else {
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return GLOBAL_ROTZOOM;
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}
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}
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#endif // CONFIG_GLOBAL_MOTION
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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_MV_H_
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