Hangyu Kuang | f047e7c | 2016-07-06 14:21:45 -0700 | [diff] [blame] | 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 | #include "libyuv/row.h" |
| 12 | #include "libyuv/rotate_row.h" |
| 13 | |
| 14 | #ifdef __cplusplus |
| 15 | namespace libyuv { |
| 16 | extern "C" { |
| 17 | #endif |
| 18 | |
| 19 | void TransposeWx8_C(const uint8* src, int src_stride, |
| 20 | uint8* dst, int dst_stride, int width) { |
| 21 | int i; |
| 22 | for (i = 0; i < width; ++i) { |
| 23 | dst[0] = src[0 * src_stride]; |
| 24 | dst[1] = src[1 * src_stride]; |
| 25 | dst[2] = src[2 * src_stride]; |
| 26 | dst[3] = src[3 * src_stride]; |
| 27 | dst[4] = src[4 * src_stride]; |
| 28 | dst[5] = src[5 * src_stride]; |
| 29 | dst[6] = src[6 * src_stride]; |
| 30 | dst[7] = src[7 * src_stride]; |
| 31 | ++src; |
| 32 | dst += dst_stride; |
| 33 | } |
| 34 | } |
| 35 | |
| 36 | void TransposeUVWx8_C(const uint8* src, int src_stride, |
| 37 | uint8* dst_a, int dst_stride_a, |
| 38 | uint8* dst_b, int dst_stride_b, int width) { |
| 39 | int i; |
| 40 | for (i = 0; i < width; ++i) { |
| 41 | dst_a[0] = src[0 * src_stride + 0]; |
| 42 | dst_b[0] = src[0 * src_stride + 1]; |
| 43 | dst_a[1] = src[1 * src_stride + 0]; |
| 44 | dst_b[1] = src[1 * src_stride + 1]; |
| 45 | dst_a[2] = src[2 * src_stride + 0]; |
| 46 | dst_b[2] = src[2 * src_stride + 1]; |
| 47 | dst_a[3] = src[3 * src_stride + 0]; |
| 48 | dst_b[3] = src[3 * src_stride + 1]; |
| 49 | dst_a[4] = src[4 * src_stride + 0]; |
| 50 | dst_b[4] = src[4 * src_stride + 1]; |
| 51 | dst_a[5] = src[5 * src_stride + 0]; |
| 52 | dst_b[5] = src[5 * src_stride + 1]; |
| 53 | dst_a[6] = src[6 * src_stride + 0]; |
| 54 | dst_b[6] = src[6 * src_stride + 1]; |
| 55 | dst_a[7] = src[7 * src_stride + 0]; |
| 56 | dst_b[7] = src[7 * src_stride + 1]; |
| 57 | src += 2; |
| 58 | dst_a += dst_stride_a; |
| 59 | dst_b += dst_stride_b; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | void TransposeWxH_C(const uint8* src, int src_stride, |
| 64 | uint8* dst, int dst_stride, |
| 65 | int width, int height) { |
| 66 | int i; |
| 67 | for (i = 0; i < width; ++i) { |
| 68 | int j; |
| 69 | for (j = 0; j < height; ++j) { |
| 70 | dst[i * dst_stride + j] = src[j * src_stride + i]; |
| 71 | } |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | void TransposeUVWxH_C(const uint8* src, int src_stride, |
| 76 | uint8* dst_a, int dst_stride_a, |
| 77 | uint8* dst_b, int dst_stride_b, |
| 78 | int width, int height) { |
| 79 | int i; |
| 80 | for (i = 0; i < width * 2; i += 2) { |
| 81 | int j; |
| 82 | for (j = 0; j < height; ++j) { |
| 83 | dst_a[j + ((i >> 1) * dst_stride_a)] = src[i + (j * src_stride)]; |
| 84 | dst_b[j + ((i >> 1) * dst_stride_b)] = src[i + (j * src_stride) + 1]; |
| 85 | } |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | #ifdef __cplusplus |
| 90 | } // extern "C" |
| 91 | } // namespace libyuv |
| 92 | #endif |