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Diffstat (limited to 'source/rotate_common.cc')
| -rw-r--r-- | source/rotate_common.cc | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/source/rotate_common.cc b/source/rotate_common.cc new file mode 100644 index 00000000..e72608e9 --- /dev/null +++ b/source/rotate_common.cc @@ -0,0 +1,198 @@ +/* + * 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 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 |