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 17 namespace libyuv { 18 extern "C" { 19 #endif 20 21 // Supported rotation. 22 enum 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. 35 LIBYUV_API 36 int 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. 45 LIBYUV_API 46 int 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 54 LIBYUV_API 55 void RotatePlane90(const uint8* src, int src_stride, 56 uint8* dst, int dst_stride, 57 int width, int height); 58 59 LIBYUV_API 60 void RotatePlane180(const uint8* src, int src_stride, 61 uint8* dst, int dst_stride, 62 int width, int height); 63 64 LIBYUV_API 65 void RotatePlane270(const uint8* src, int src_stride, 66 uint8* dst, int dst_stride, 67 int width, int height); 68 69 LIBYUV_API 70 void 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. 79 LIBYUV_API 80 void 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 85 LIBYUV_API 86 void 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. 94 LIBYUV_API 95 void TransposePlane(const uint8* src, int src_stride, 96 uint8* dst, int dst_stride, 97 int width, int height); 98 99 LIBYUV_API 100 void 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