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/rotate_row.h"
12 #include "libyuv/row.h"
13
14 #ifdef __cplusplus
15 namespace libyuv {
16 extern "C" {
17 #endif
18
TransposeWx8_C(const uint8_t * src,int src_stride,uint8_t * dst,int dst_stride,int width)19 void TransposeWx8_C(const uint8_t* src,
20 int src_stride,
21 uint8_t* dst,
22 int dst_stride,
23 int width) {
24 int i;
25 for (i = 0; i < width; ++i) {
26 dst[0] = src[0 * src_stride];
27 dst[1] = src[1 * src_stride];
28 dst[2] = src[2 * src_stride];
29 dst[3] = src[3 * src_stride];
30 dst[4] = src[4 * src_stride];
31 dst[5] = src[5 * src_stride];
32 dst[6] = src[6 * src_stride];
33 dst[7] = src[7 * src_stride];
34 ++src;
35 dst += dst_stride;
36 }
37 }
38
TransposeUVWx8_C(const uint8_t * src,int src_stride,uint8_t * dst_a,int dst_stride_a,uint8_t * dst_b,int dst_stride_b,int width)39 void TransposeUVWx8_C(const uint8_t* src,
40 int src_stride,
41 uint8_t* dst_a,
42 int dst_stride_a,
43 uint8_t* dst_b,
44 int dst_stride_b,
45 int width) {
46 int i;
47 for (i = 0; i < width; ++i) {
48 dst_a[0] = src[0 * src_stride + 0];
49 dst_b[0] = src[0 * src_stride + 1];
50 dst_a[1] = src[1 * src_stride + 0];
51 dst_b[1] = src[1 * src_stride + 1];
52 dst_a[2] = src[2 * src_stride + 0];
53 dst_b[2] = src[2 * src_stride + 1];
54 dst_a[3] = src[3 * src_stride + 0];
55 dst_b[3] = src[3 * src_stride + 1];
56 dst_a[4] = src[4 * src_stride + 0];
57 dst_b[4] = src[4 * src_stride + 1];
58 dst_a[5] = src[5 * src_stride + 0];
59 dst_b[5] = src[5 * src_stride + 1];
60 dst_a[6] = src[6 * src_stride + 0];
61 dst_b[6] = src[6 * src_stride + 1];
62 dst_a[7] = src[7 * src_stride + 0];
63 dst_b[7] = src[7 * src_stride + 1];
64 src += 2;
65 dst_a += dst_stride_a;
66 dst_b += dst_stride_b;
67 }
68 }
69
TransposeWxH_C(const uint8_t * src,int src_stride,uint8_t * dst,int dst_stride,int width,int height)70 void TransposeWxH_C(const uint8_t* src,
71 int src_stride,
72 uint8_t* dst,
73 int dst_stride,
74 int width,
75 int height) {
76 int i;
77 for (i = 0; i < width; ++i) {
78 int j;
79 for (j = 0; j < height; ++j) {
80 dst[i * dst_stride + j] = src[j * src_stride + i];
81 }
82 }
83 }
84
TransposeUVWxH_C(const uint8_t * src,int src_stride,uint8_t * dst_a,int dst_stride_a,uint8_t * dst_b,int dst_stride_b,int width,int height)85 void TransposeUVWxH_C(const uint8_t* src,
86 int src_stride,
87 uint8_t* dst_a,
88 int dst_stride_a,
89 uint8_t* dst_b,
90 int dst_stride_b,
91 int width,
92 int height) {
93 int i;
94 for (i = 0; i < width * 2; i += 2) {
95 int j;
96 for (j = 0; j < height; ++j) {
97 dst_a[((i >> 1) * dst_stride_a) + j] = src[i + (j * src_stride)];
98 dst_b[((i >> 1) * dst_stride_b) + j] = src[i + (j * src_stride) + 1];
99 }
100 }
101 }
102
TransposeWx8_16_C(const uint16_t * src,int src_stride,uint16_t * dst,int dst_stride,int width)103 void TransposeWx8_16_C(const uint16_t* src,
104 int src_stride,
105 uint16_t* dst,
106 int dst_stride,
107 int width) {
108 int i;
109 for (i = 0; i < width; ++i) {
110 dst[0] = src[0 * src_stride];
111 dst[1] = src[1 * src_stride];
112 dst[2] = src[2 * src_stride];
113 dst[3] = src[3 * src_stride];
114 dst[4] = src[4 * src_stride];
115 dst[5] = src[5 * src_stride];
116 dst[6] = src[6 * src_stride];
117 dst[7] = src[7 * src_stride];
118 ++src;
119 dst += dst_stride;
120 }
121 }
122
TransposeWxH_16_C(const uint16_t * src,int src_stride,uint16_t * dst,int dst_stride,int width,int height)123 void TransposeWxH_16_C(const uint16_t* src,
124 int src_stride,
125 uint16_t* dst,
126 int dst_stride,
127 int width,
128 int height) {
129 int i;
130 for (i = 0; i < width; ++i) {
131 int j;
132 for (j = 0; j < height; ++j) {
133 dst[i * dst_stride + j] = src[j * src_stride + i];
134 }
135 }
136 }
137
138 // Transpose 32 bit values (ARGB)
Transpose4x4_32_C(const uint8_t * src,int src_stride,uint8_t * dst,int dst_stride,int width)139 void Transpose4x4_32_C(const uint8_t* src,
140 int src_stride,
141 uint8_t* dst,
142 int dst_stride,
143 int width) {
144 const uint8_t* src1 = src + src_stride;
145 const uint8_t* src2 = src1 + src_stride;
146 const uint8_t* src3 = src2 + src_stride;
147 uint8_t* dst1 = dst + dst_stride;
148 uint8_t* dst2 = dst1 + dst_stride;
149 uint8_t* dst3 = dst2 + dst_stride;
150 int i;
151 for (i = 0; i < width; i += 4) {
152 uint32_t p00 = ((uint32_t*)(src))[0];
153 uint32_t p10 = ((uint32_t*)(src))[1];
154 uint32_t p20 = ((uint32_t*)(src))[2];
155 uint32_t p30 = ((uint32_t*)(src))[3];
156 uint32_t p01 = ((uint32_t*)(src1))[0];
157 uint32_t p11 = ((uint32_t*)(src1))[1];
158 uint32_t p21 = ((uint32_t*)(src1))[2];
159 uint32_t p31 = ((uint32_t*)(src1))[3];
160 uint32_t p02 = ((uint32_t*)(src2))[0];
161 uint32_t p12 = ((uint32_t*)(src2))[1];
162 uint32_t p22 = ((uint32_t*)(src2))[2];
163 uint32_t p32 = ((uint32_t*)(src2))[3];
164 uint32_t p03 = ((uint32_t*)(src3))[0];
165 uint32_t p13 = ((uint32_t*)(src3))[1];
166 uint32_t p23 = ((uint32_t*)(src3))[2];
167 uint32_t p33 = ((uint32_t*)(src3))[3];
168 ((uint32_t*)(dst))[0] = p00;
169 ((uint32_t*)(dst))[1] = p01;
170 ((uint32_t*)(dst))[2] = p02;
171 ((uint32_t*)(dst))[3] = p03;
172 ((uint32_t*)(dst1))[0] = p10;
173 ((uint32_t*)(dst1))[1] = p11;
174 ((uint32_t*)(dst1))[2] = p12;
175 ((uint32_t*)(dst1))[3] = p13;
176 ((uint32_t*)(dst2))[0] = p20;
177 ((uint32_t*)(dst2))[1] = p21;
178 ((uint32_t*)(dst2))[2] = p22;
179 ((uint32_t*)(dst2))[3] = p23;
180 ((uint32_t*)(dst3))[0] = p30;
181 ((uint32_t*)(dst3))[1] = p31;
182 ((uint32_t*)(dst3))[2] = p32;
183 ((uint32_t*)(dst3))[3] = p33;
184 src += src_stride * 4; // advance 4 rows
185 src1 += src_stride * 4;
186 src2 += src_stride * 4;
187 src3 += src_stride * 4;
188 dst += 4 * 4; // advance 4 columns
189 dst1 += 4 * 4;
190 dst2 += 4 * 4;
191 dst3 += 4 * 4;
192 }
193 }
194
195 #ifdef __cplusplus
196 } // extern "C"
197 } // namespace libyuv
198 #endif
199