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/*
* Copyright 2011 The LibYuv Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "libyuv/rotate_row.h"
#include "libyuv/row.h"
#ifdef __cplusplus
namespace libyuv {
extern "C" {
#endif
void TransposeWx8_C(const uint8_t* src,
int src_stride,
uint8_t* dst,
int dst_stride,
int width) {
int i;
for (i = 0; i < width; ++i) {
dst[0] = src[0 * src_stride];
dst[1] = src[1 * src_stride];
dst[2] = src[2 * src_stride];
dst[3] = src[3 * src_stride];
dst[4] = src[4 * src_stride];
dst[5] = src[5 * src_stride];
dst[6] = src[6 * src_stride];
dst[7] = src[7 * src_stride];
++src;
dst += dst_stride;
}
}
void TransposeWx16_C(const uint8_t* src,
int src_stride,
uint8_t* dst,
int dst_stride,
int width) {
TransposeWx8_C(src, src_stride, dst, dst_stride, width);
TransposeWx8_C((src + 8 * src_stride), src_stride, (dst + 8), dst_stride,
width);
}
void 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) {
int i;
for (i = 0; i < width; ++i) {
dst_a[0] = src[0 * src_stride + 0];
dst_b[0] = src[0 * src_stride + 1];
dst_a[1] = src[1 * src_stride + 0];
dst_b[1] = src[1 * src_stride + 1];
dst_a[2] = src[2 * src_stride + 0];
dst_b[2] = src[2 * src_stride + 1];
dst_a[3] = src[3 * src_stride + 0];
dst_b[3] = src[3 * src_stride + 1];
dst_a[4] = src[4 * src_stride + 0];
dst_b[4] = src[4 * src_stride + 1];
dst_a[5] = src[5 * src_stride + 0];
dst_b[5] = src[5 * src_stride + 1];
dst_a[6] = src[6 * src_stride + 0];
dst_b[6] = src[6 * src_stride + 1];
dst_a[7] = src[7 * src_stride + 0];
dst_b[7] = src[7 * src_stride + 1];
src += 2;
dst_a += dst_stride_a;
dst_b += dst_stride_b;
}
}
void TransposeWxH_C(const uint8_t* src,
int src_stride,
uint8_t* dst,
int dst_stride,
int width,
int height) {
int i;
for (i = 0; i < width; ++i) {
int j;
for (j = 0; j < height; ++j) {
dst[i * dst_stride + j] = src[j * src_stride + i];
}
}
}
void 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) {
int i;
for (i = 0; i < width * 2; i += 2) {
int j;
for (j = 0; j < height; ++j) {
dst_a[((i >> 1) * dst_stride_a) + j] = src[i + (j * src_stride)];
dst_b[((i >> 1) * dst_stride_b) + j] = src[i + (j * src_stride) + 1];
}
}
}
void TransposeWx8_16_C(const uint16_t* src,
int src_stride,
uint16_t* dst,
int dst_stride,
int width) {
int i;
for (i = 0; i < width; ++i) {
dst[0] = src[0 * src_stride];
dst[1] = src[1 * src_stride];
dst[2] = src[2 * src_stride];
dst[3] = src[3 * src_stride];
dst[4] = src[4 * src_stride];
dst[5] = src[5 * src_stride];
dst[6] = src[6 * src_stride];
dst[7] = src[7 * src_stride];
++src;
dst += dst_stride;
}
}
void TransposeWxH_16_C(const uint16_t* src,
int src_stride,
uint16_t* dst,
int dst_stride,
int width,
int height) {
int i;
for (i = 0; i < width; ++i) {
int j;
for (j = 0; j < height; ++j) {
dst[i * dst_stride + j] = src[j * src_stride + i];
}
}
}
// Transpose 32 bit values (ARGB)
void Transpose4x4_32_C(const uint8_t* src,
int src_stride,
uint8_t* dst,
int dst_stride,
int width) {
const uint8_t* src1 = src + src_stride;
const uint8_t* src2 = src1 + src_stride;
const uint8_t* src3 = src2 + src_stride;
uint8_t* dst1 = dst + dst_stride;
uint8_t* dst2 = dst1 + dst_stride;
uint8_t* dst3 = dst2 + dst_stride;
int i;
for (i = 0; i < width; i += 4) {
uint32_t p00 = ((uint32_t*)(src))[0];
uint32_t p10 = ((uint32_t*)(src))[1];
uint32_t p20 = ((uint32_t*)(src))[2];
uint32_t p30 = ((uint32_t*)(src))[3];
uint32_t p01 = ((uint32_t*)(src1))[0];
uint32_t p11 = ((uint32_t*)(src1))[1];
uint32_t p21 = ((uint32_t*)(src1))[2];
uint32_t p31 = ((uint32_t*)(src1))[3];
uint32_t p02 = ((uint32_t*)(src2))[0];
uint32_t p12 = ((uint32_t*)(src2))[1];
uint32_t p22 = ((uint32_t*)(src2))[2];
uint32_t p32 = ((uint32_t*)(src2))[3];
uint32_t p03 = ((uint32_t*)(src3))[0];
uint32_t p13 = ((uint32_t*)(src3))[1];
uint32_t p23 = ((uint32_t*)(src3))[2];
uint32_t p33 = ((uint32_t*)(src3))[3];
((uint32_t*)(dst))[0] = p00;
((uint32_t*)(dst))[1] = p01;
((uint32_t*)(dst))[2] = p02;
((uint32_t*)(dst))[3] = p03;
((uint32_t*)(dst1))[0] = p10;
((uint32_t*)(dst1))[1] = p11;
((uint32_t*)(dst1))[2] = p12;
((uint32_t*)(dst1))[3] = p13;
((uint32_t*)(dst2))[0] = p20;
((uint32_t*)(dst2))[1] = p21;
((uint32_t*)(dst2))[2] = p22;
((uint32_t*)(dst2))[3] = p23;
((uint32_t*)(dst3))[0] = p30;
((uint32_t*)(dst3))[1] = p31;
((uint32_t*)(dst3))[2] = p32;
((uint32_t*)(dst3))[3] = p33;
src += src_stride * 4; // advance 4 rows
src1 += src_stride * 4;
src2 += src_stride * 4;
src3 += src_stride * 4;
dst += 4 * 4; // advance 4 columns
dst1 += 4 * 4;
dst2 += 4 * 4;
dst3 += 4 * 4;
}
}
#ifdef __cplusplus
} // extern "C"
} // namespace libyuv
#endif
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