56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/*
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* Copyright (c) 2015 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VPX_DSP_X86_TRANSPOSE_SSE2_H_
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#define VPX_DSP_X86_TRANSPOSE_SSE2_H_
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#include "./vpx_dsp_rtcd.h"
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#include "vpx_dsp/x86/inv_txfm_sse2.h"
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#include "vpx_dsp/x86/txfm_common_sse2.h"
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static INLINE void transpose_16bit_4x4(__m128i *res) {
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const __m128i tr0_0 = _mm_unpacklo_epi16(res[0], res[1]);
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const __m128i tr0_1 = _mm_unpackhi_epi16(res[0], res[1]);
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res[0] = _mm_unpacklo_epi16(tr0_0, tr0_1);
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res[1] = _mm_unpackhi_epi16(tr0_0, tr0_1);
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}
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static INLINE void transpose_32bit_4x4(__m128i *const a0, __m128i *const a1,
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__m128i *const a2, __m128i *const a3) {
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// Unpack 32 bit elements. Goes from:
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// a0: 00 01 02 03
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// a1: 10 11 12 13
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// a2: 20 21 22 23
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// a3: 30 31 32 33
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// to:
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// b0: 00 10 01 11
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// b1: 20 30 21 31
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// b2: 02 12 03 13
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// b3: 22 32 23 33
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const __m128i b0 = _mm_unpacklo_epi32(*a0, *a1);
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const __m128i b1 = _mm_unpacklo_epi32(*a2, *a3);
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const __m128i b2 = _mm_unpackhi_epi32(*a0, *a1);
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const __m128i b3 = _mm_unpackhi_epi32(*a2, *a3);
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// Unpack 64 bit elements resulting in:
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// a0: 00 10 20 30
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// a1: 01 11 21 31
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// a2: 02 12 22 32
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// a3: 03 13 23 33
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*a0 = _mm_unpacklo_epi64(b0, b1);
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*a1 = _mm_unpackhi_epi64(b0, b1);
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*a2 = _mm_unpacklo_epi64(b2, b3);
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*a3 = _mm_unpackhi_epi64(b2, b3);
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}
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#endif // VPX_DSP_X86_TRANSPOSE_SSE2_H_
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