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| 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 |
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