chromium/third_party/libyuv/source/rotate_gcc.cc

/*
 *  Copyright 2015 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

// This module is for GCC x86 and x64.
#if !defined(LIBYUV_DISABLE_X86) && (defined(__x86_64__) || defined(__i386__))

// Transpose 8x8. 32 or 64 bit, but not NaCL for 64 bit.
#if defined(HAS_TRANSPOSEWX8_SSSE3)
void TransposeWx8_SSSE3(const uint8_t* src,
                        int src_stride,
                        uint8_t* dst,
                        int dst_stride,
                        int width) { … }
#endif  // defined(HAS_TRANSPOSEWX8_SSSE3)

// Transpose 16x8. 64 bit
#if defined(HAS_TRANSPOSEWX8_FAST_SSSE3)
void TransposeWx8_Fast_SSSE3(const uint8_t* src,
                             int src_stride,
                             uint8_t* dst,
                             int dst_stride,
                             int width) { … }
#endif  // defined(HAS_TRANSPOSEWX8_FAST_SSSE3)

// Transpose UV 8x8.  64 bit.
#if defined(HAS_TRANSPOSEUVWX8_SSE2)
void TransposeUVWx8_SSE2(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) { … }
#endif  // defined(HAS_TRANSPOSEUVWX8_SSE2)

#if defined(HAS_TRANSPOSE4X4_32_SSE2)
// 4 values, little endian view
// a b c d
// e f g h
// i j k l
// m n o p

// transpose 2x2
// a e b f   from row 0, 1
// i m j n   from row 2, 3
// c g d h   from row 0, 1
// k o l p   from row 2, 3

// transpose 4x4
// a e i m   from row 0, 1
// b f j n   from row 0, 1
// c g k o   from row 2, 3
// d h l p   from row 2, 3

// Transpose 32 bit values (ARGB)
void Transpose4x4_32_SSE2(const uint8_t* src,
                          int src_stride,
                          uint8_t* dst,
                          int dst_stride,
                          int width) { … }
#endif  // defined(HAS_TRANSPOSE4X4_32_SSE2)

#if defined(HAS_TRANSPOSE4X4_32_AVX2)

// Transpose 32 bit values (ARGB)
void Transpose4x4_32_AVX2(const uint8_t* src,
                          int src_stride,
                          uint8_t* dst,
                          int dst_stride,
                          int width) { … }
#endif  // defined(HAS_TRANSPOSE4X4_32_AVX2)

#endif  // defined(__x86_64__) || defined(__i386__)

#ifdef __cplusplus
}  // extern "C"
}  // namespace libyuv
#endif