1/* 2 * Copyright 2011 The LibYuv Project Authors. All rights reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11#ifndef INCLUDE_LIBYUV_ROTATE_H_ // NOLINT 12#define INCLUDE_LIBYUV_ROTATE_H_ 13 14#include "libyuv/basic_types.h" 15 16#ifdef __cplusplus 17namespace libyuv { 18extern "C" { 19#endif 20 21// Supported rotation. 22enum RotationMode { 23 kRotate0 = 0, // No rotation. 24 kRotate90 = 90, // Rotate 90 degrees clockwise. 25 kRotate180 = 180, // Rotate 180 degrees. 26 kRotate270 = 270, // Rotate 270 degrees clockwise. 27 28 // Deprecated. 29 kRotateNone = 0, 30 kRotateClockwise = 90, 31 kRotateCounterClockwise = 270, 32}; 33 34// Rotate I420 frame. 35LIBYUV_API 36int I420Rotate(const uint8* src_y, int src_stride_y, 37 const uint8* src_u, int src_stride_u, 38 const uint8* src_v, int src_stride_v, 39 uint8* dst_y, int dst_stride_y, 40 uint8* dst_u, int dst_stride_u, 41 uint8* dst_v, int dst_stride_v, 42 int src_width, int src_height, RotationMode mode); 43 44// Rotate NV12 input and store in I420. 45LIBYUV_API 46int NV12ToI420Rotate(const uint8* src_y, int src_stride_y, 47 const uint8* src_uv, int src_stride_uv, 48 uint8* dst_y, int dst_stride_y, 49 uint8* dst_u, int dst_stride_u, 50 uint8* dst_v, int dst_stride_v, 51 int src_width, int src_height, RotationMode mode); 52 53// Rotate planes by 90, 180, 270 54LIBYUV_API 55void RotatePlane90(const uint8* src, int src_stride, 56 uint8* dst, int dst_stride, 57 int width, int height); 58 59LIBYUV_API 60void RotatePlane180(const uint8* src, int src_stride, 61 uint8* dst, int dst_stride, 62 int width, int height); 63 64LIBYUV_API 65void RotatePlane270(const uint8* src, int src_stride, 66 uint8* dst, int dst_stride, 67 int width, int height); 68 69LIBYUV_API 70void RotateUV90(const uint8* src, int src_stride, 71 uint8* dst_a, int dst_stride_a, 72 uint8* dst_b, int dst_stride_b, 73 int width, int height); 74 75// Rotations for when U and V are interleaved. 76// These functions take one input pointer and 77// split the data into two buffers while 78// rotating them. 79LIBYUV_API 80void RotateUV180(const uint8* src, int src_stride, 81 uint8* dst_a, int dst_stride_a, 82 uint8* dst_b, int dst_stride_b, 83 int width, int height); 84 85LIBYUV_API 86void RotateUV270(const uint8* src, int src_stride, 87 uint8* dst_a, int dst_stride_a, 88 uint8* dst_b, int dst_stride_b, 89 int width, int height); 90 91// The 90 and 270 functions are based on transposes. 92// Doing a transpose with reversing the read/write 93// order will result in a rotation by +- 90 degrees. 94LIBYUV_API 95void TransposePlane(const uint8* src, int src_stride, 96 uint8* dst, int dst_stride, 97 int width, int height); 98 99LIBYUV_API 100void TransposeUV(const uint8* src, int src_stride, 101 uint8* dst_a, int dst_stride_a, 102 uint8* dst_b, int dst_stride_b, 103 int width, int height); 104 105#ifdef __cplusplus 106} // extern "C" 107} // namespace libyuv 108#endif 109 110#endif // INCLUDE_LIBYUV_ROTATE_H_ NOLINT 111