mirror of
https://chromium.googlesource.com/libyuv/libyuv
synced 2025-12-06 16:56:55 +08:00
fd4b315d5d
BUG=none TEST=local tests Review URL: http://webrtc-codereview.appspot.com/244008 git-svn-id: http://libyuv.googlecode.com/svn/trunk@38 16f28f9a-4ce2-e073-06de-1de4eb20be90
782 lines
24 KiB
C++
782 lines
24 KiB
C++
/*
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* Copyright (c) 2011 The LibYuv 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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#include "libyuv/planar_functions.h"
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#include "libyuv/rotate.h"
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#include "rotate_priv.h"
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#include "libyuv/cpu_id.h"
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namespace libyuv {
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#if (defined(WIN32) || defined(__x86_64__) || defined(__i386__)) \
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&& !defined(COVERAGE_ENABLED) && !defined(TARGET_IPHONE_SIMULATOR)
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#if defined(_MSC_VER)
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#define TALIGN16(t, var) static __declspec(align(16)) t _ ## var
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#else
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#define TALIGN16(t, var) t var __attribute__((aligned(16)))
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#endif
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// Shuffle table for reversing the bytes.
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extern "C" TALIGN16(const uint8, kShuffleReverse[16]) =
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{ 15u, 14u, 13u, 12u, 11u, 10u, 9u, 8u, 7u, 6u, 5u, 4u, 3u, 2u, 1u, 0u };
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// Shuffle table for reversing the bytes of UV channels.
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extern "C" TALIGN16(const uint8, kShuffleReverseUV[16]) =
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{ 14u, 12u, 10u, 8u, 6u, 4u, 2u, 0u, 15u, 13u, 11u, 9u, 7u, 5u, 3u, 1u };
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#endif
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typedef void (*reverse_uv_func)(const uint8*, uint8*, uint8*, int);
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typedef void (*reverse_func)(const uint8*, uint8*, int);
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typedef void (*rotate_uv_wx8_func)(const uint8*, int,
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uint8*, int,
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uint8*, int, int);
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typedef void (*rotate_uv_wxh_func)(const uint8*, int,
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uint8*, int,
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uint8*, int, int, int);
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typedef void (*rotate_wx8_func)(const uint8*, int, uint8*, int, int);
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typedef void (*rotate_wxh_func)(const uint8*, int, uint8*, int, int, int);
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#ifdef __ARM_NEON__
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extern "C" {
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void RestoreRegisters_NEON(unsigned long long *restore);
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void SaveRegisters_NEON(unsigned long long *store);
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#define HAS_REVERSE_LINE_NEON
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void ReverseLine_NEON(const uint8* src, uint8* dst, int width);
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#define HAS_REVERSE_LINE_UV_NEON
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void ReverseLineUV_NEON(const uint8* src,
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uint8* dst_a, uint8* dst_b,
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int width);
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#define HAS_TRANSPOSE_WX8_NEON
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void TransposeWx8_NEON(const uint8* src, int src_stride,
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uint8* dst, int dst_stride, int width);
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#define HAS_TRANSPOSE_UVWX8_NEON
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void TransposeUVWx8_NEON(const uint8* src, int src_stride,
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uint8* dst_a, int dst_stride_a,
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uint8* dst_b, int dst_stride_b,
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int width);
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} // extern "C"
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#endif
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#if defined(WIN32) && !defined(COVERAGE_ENABLED)
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#define HAS_TRANSPOSE_WX8_SSSE3
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__declspec(naked)
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static void TransposeWx8_SSSE3(const uint8* src, int src_stride,
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uint8* dst, int dst_stride, int width) {
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__asm {
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push edi
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push esi
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push ebp
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mov eax, [esp + 12 + 4] // src
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mov edi, [esp + 12 + 8] // src_stride
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mov edx, [esp + 12 + 12] // dst
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mov esi, [esp + 12 + 16] // dst_stride
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mov ecx, [esp + 12 + 20] // width
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convertloop :
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// Read in the data from the source pointer.
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// First round of bit swap.
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movq xmm0, qword ptr [eax]
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lea ebp, [eax + 8]
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movq xmm1, qword ptr [eax + edi]
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lea eax, [eax + 2 * edi]
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punpcklbw xmm0, xmm1
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movq xmm2, qword ptr [eax]
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movdqa xmm1, xmm0
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palignr xmm1, xmm1, 8
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movq xmm3, qword ptr [eax + edi]
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lea eax, [eax + 2 * edi]
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punpcklbw xmm2, xmm3
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movdqa xmm3, xmm2
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movq xmm4, qword ptr [eax]
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palignr xmm3, xmm3, 8
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movq xmm5, qword ptr [eax + edi]
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punpcklbw xmm4, xmm5
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lea eax, [eax + 2 * edi]
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movdqa xmm5, xmm4
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movq xmm6, qword ptr [eax]
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palignr xmm5, xmm5, 8
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movq xmm7, qword ptr [eax + edi]
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punpcklbw xmm6, xmm7
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mov eax, ebp
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movdqa xmm7, xmm6
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palignr xmm7, xmm7, 8
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// Second round of bit swap.
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punpcklwd xmm0, xmm2
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punpcklwd xmm1, xmm3
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movdqa xmm2, xmm0
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movdqa xmm3, xmm1
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palignr xmm2, xmm2, 8
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palignr xmm3, xmm3, 8
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punpcklwd xmm4, xmm6
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punpcklwd xmm5, xmm7
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movdqa xmm6, xmm4
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movdqa xmm7, xmm5
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palignr xmm6, xmm6, 8
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palignr xmm7, xmm7, 8
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// Third round of bit swap.
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// Write to the destination pointer.
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punpckldq xmm0, xmm4
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movq qword ptr [edx], xmm0
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movdqa xmm4, xmm0
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palignr xmm4, xmm4, 8
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movq qword ptr [edx + esi], xmm4
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lea edx, [edx + 2 * esi]
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punpckldq xmm2, xmm6
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movdqa xmm6, xmm2
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palignr xmm6, xmm6, 8
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movq qword ptr [edx], xmm2
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punpckldq xmm1, xmm5
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movq qword ptr [edx + esi], xmm6
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lea edx, [edx + 2 * esi]
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movdqa xmm5, xmm1
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movq qword ptr [edx], xmm1
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palignr xmm5, xmm5, 8
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punpckldq xmm3, xmm7
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movq qword ptr [edx + esi], xmm5
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lea edx, [edx + 2 * esi]
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movq qword ptr [edx], xmm3
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movdqa xmm7, xmm3
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palignr xmm7, xmm7, 8
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movq qword ptr [edx + esi], xmm7
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lea edx, [edx + 2 * esi]
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sub ecx, 8
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ja convertloop
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pop ebp
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pop esi
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pop edi
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ret
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}
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}
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#elif (defined(__i386__) || defined(__x86_64__)) && \
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!defined(COVERAGE_ENABLED) && !defined(TARGET_IPHONE_SIMULATOR)
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#define HAS_TRANSPOSE_WX8_SSSE3
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static void TransposeWx8_SSSE3(const uint8* src, int src_stride,
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uint8* dst, int dst_stride, int width) {
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asm volatile(
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"1:"
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// Read in the data from the source pointer.
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// First round of bit swap.
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"movq (%0),%%xmm0\n"
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"movq (%0,%3),%%xmm1\n"
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"lea (%0,%3,2),%0\n"
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"punpcklbw %%xmm1,%%xmm0\n"
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"movq (%0),%%xmm2\n"
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"movdqa %%xmm0,%%xmm1\n"
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"palignr $0x8,%%xmm1,%%xmm1\n"
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"movq (%0,%3),%%xmm3\n"
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"lea (%0,%3,2),%0\n"
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"punpcklbw %%xmm3,%%xmm2\n"
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"movdqa %%xmm2,%%xmm3\n"
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"movq (%0),%%xmm4\n"
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"palignr $0x8,%%xmm3,%%xmm3\n"
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"movq (%0,%3),%%xmm5\n"
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"lea (%0,%3,2),%0\n"
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"punpcklbw %%xmm5,%%xmm4\n"
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"movdqa %%xmm4,%%xmm5\n"
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"movq (%0),%%xmm6\n"
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"palignr $0x8,%%xmm5,%%xmm5\n"
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"movq (%0,%3),%%xmm7\n"
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"lea (%0,%3,2),%0\n"
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"punpcklbw %%xmm7,%%xmm6\n"
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"neg %3\n"
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"movdqa %%xmm6,%%xmm7\n"
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"lea 0x8(%0,%3,8),%0\n"
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"palignr $0x8,%%xmm7,%%xmm7\n"
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"neg %3\n"
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// Second round of bit swap.
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"punpcklwd %%xmm2,%%xmm0\n"
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"punpcklwd %%xmm3,%%xmm1\n"
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"movdqa %%xmm0,%%xmm2\n"
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"movdqa %%xmm1,%%xmm3\n"
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"palignr $0x8,%%xmm2,%%xmm2\n"
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"palignr $0x8,%%xmm3,%%xmm3\n"
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"punpcklwd %%xmm6,%%xmm4\n"
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"punpcklwd %%xmm7,%%xmm5\n"
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"movdqa %%xmm4,%%xmm6\n"
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"movdqa %%xmm5,%%xmm7\n"
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"palignr $0x8,%%xmm6,%%xmm6\n"
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"palignr $0x8,%%xmm7,%%xmm7\n"
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// Third round of bit swap.
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// Write to the destination pointer.
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"punpckldq %%xmm4,%%xmm0\n"
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"movq %%xmm0,(%1)\n"
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"movdqa %%xmm0,%%xmm4\n"
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"palignr $0x8,%%xmm4,%%xmm4\n"
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"movq %%xmm4,(%1,%4)\n"
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"lea (%1,%4,2),%1\n"
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"punpckldq %%xmm6,%%xmm2\n"
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"movdqa %%xmm2,%%xmm6\n"
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"movq %%xmm2,(%1)\n"
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"palignr $0x8,%%xmm6,%%xmm6\n"
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"punpckldq %%xmm5,%%xmm1\n"
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"movq %%xmm6,(%1,%4)\n"
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"lea (%1,%4,2),%1\n"
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"movdqa %%xmm1,%%xmm5\n"
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"movq %%xmm1,(%1)\n"
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"palignr $0x8,%%xmm5,%%xmm5\n"
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"movq %%xmm5,(%1,%4)\n"
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"lea (%1,%4,2),%1\n"
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"punpckldq %%xmm7,%%xmm3\n"
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"movq %%xmm3,(%1)\n"
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"movdqa %%xmm3,%%xmm7\n"
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"palignr $0x8,%%xmm7,%%xmm7\n"
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"movq %%xmm7,(%1,%4)\n"
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"lea (%1,%4,2),%1\n"
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"sub $0x8,%2\n"
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"ja 1b\n"
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: "+r"(src), // %0
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"+r"(dst), // %1
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"+r"(width) // %2
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: "r"(static_cast<intptr_t>(src_stride)), // %3
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"r"(static_cast<intptr_t>(dst_stride)) // %4
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: "memory"
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);
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}
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#endif
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static void TransposeWx8_C(const uint8* src, int src_stride,
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uint8* dst, int dst_stride,
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int w) {
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int i, j;
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for (i = 0; i < w; ++i)
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for (j = 0; j < 8; ++j)
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dst[i * dst_stride + j] = src[j * src_stride + i];
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}
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static void TransposeWxH_C(const uint8* src, int src_stride,
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uint8* dst, int dst_stride,
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int width, int height) {
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int i, j;
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for (i = 0; i < width; ++i)
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for (j = 0; j < height; ++j)
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dst[i * dst_stride + j] = src[j * src_stride + i];
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}
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void TransposePlane(const uint8* src, int src_stride,
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uint8* dst, int dst_stride,
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int width, int height) {
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int i = height;
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rotate_wx8_func TransposeWx8;
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rotate_wxh_func TransposeWxH;
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#if defined(HAS_TRANSPOSE_WX8_NEON)
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if (libyuv::TestCpuFlag(libyuv::kCpuHasNEON) &&
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(width % 8 == 0) &&
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IS_ALIGNED(src, 16) && (src_stride % 8 == 0) &&
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IS_ALIGNED(dst, 16) && (dst_stride % 8 == 0)) {
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TransposeWx8 = TransposeWx8_NEON;
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TransposeWxH = TransposeWxH_C;
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} else
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#endif
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#if defined(HAS_TRANSPOSE_WX8_SSSE3)
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if (libyuv::TestCpuFlag(libyuv::kCpuHasSSSE3) &&
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(width % 8 == 0) &&
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IS_ALIGNED(src, 16) && (src_stride % 8 == 0) &&
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IS_ALIGNED(dst, 16) && (dst_stride % 8 == 0)) {
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TransposeWx8 = TransposeWx8_SSSE3;
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TransposeWxH = TransposeWxH_C;
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} else
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#endif
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{
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TransposeWx8 = TransposeWx8_C;
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TransposeWxH = TransposeWxH_C;
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}
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// work across the source in 8x8 tiles
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while (i >= 8) {
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TransposeWx8(src, src_stride, dst, dst_stride, width);
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src += 8 * src_stride; // go down 8 rows
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dst += 8; // move over 8 columns
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i -= 8;
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}
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TransposeWxH(src, src_stride, dst, dst_stride, width, i);
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}
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void RotatePlane90(const uint8* src, int src_stride,
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uint8* dst, int dst_stride,
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int width, int height) {
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// Rotate by 90 is a transpose with the source read
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// from bottom to top. So set the source pointer to the end
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// of the buffer and flip the sign of the source stride.
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src += src_stride * (height - 1);
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src_stride = -src_stride;
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TransposePlane(src, src_stride, dst, dst_stride, width, height);
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}
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void RotatePlane270(const uint8* src, int src_stride,
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uint8* dst, int dst_stride,
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int width, int height) {
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// Rotate by 270 is a transpose with the destination written
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// from bottom to top. So set the destination pointer to the end
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// of the buffer and flip the sign of the destination stride.
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dst += dst_stride * (width - 1);
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dst_stride = -dst_stride;
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TransposePlane(src, src_stride, dst, dst_stride, width, height);
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}
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static void ReverseLine_C(const uint8* src, uint8* dst, int width) {
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int i;
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src += width;
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for (i = 0; i < width; ++i) {
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--src;
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dst[i] = src[0];
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}
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}
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#if defined(WIN32) && !defined(COVERAGE_ENABLED)
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#define HAS_REVERSE_LINE_SSSE3
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__declspec(naked)
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static void ReverseLine_SSSE3(const uint8* src, uint8* dst, int width) {
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__asm {
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mov eax, [esp + 4] // src
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mov edx, [esp + 8] // dst
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mov ecx, [esp + 12] // width
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movdqa xmm7, _kShuffleReverse
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lea eax, [eax + ecx - 16]
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convertloop :
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movdqa xmm0, [eax]
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lea eax, [eax - 16]
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pshufb xmm0, xmm7
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movdqa [edx], xmm0
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lea edx, [edx + 16]
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sub ecx, 16
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ja convertloop
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ret
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}
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}
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#elif (defined(__i386__) || defined(__x86_64__)) && \
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!defined(COVERAGE_ENABLED) && !defined(TARGET_IPHONE_SIMULATOR)
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#define HAS_REVERSE_LINE_SSSE3
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static void ReverseLine_SSSE3(const uint8* src, uint8* dst, int width) {
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intptr_t temp_width = static_cast<intptr_t>(width);
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asm volatile(
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"movdqa (%3),%%xmm7\n"
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"lea -0x10(%0,%2,1),%0\n"
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"1:"
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"movdqa (%0),%%xmm0\n"
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"lea -0x10(%0),%0\n"
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"pshufb %%xmm7,%%xmm0\n"
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"movdqa %%xmm0,(%1)\n"
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"lea 0x10(%1),%1\n"
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"sub $0x10,%2\n"
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"ja 1b\n"
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: "+r"(src), // %0
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"+r"(dst), // %1
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"+r"(temp_width) // %2
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: "r"(kShuffleReverse) // %3
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: "memory"
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);
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}
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#endif
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void RotatePlane180(const uint8* src, int src_stride,
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uint8* dst, int dst_stride,
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int width, int height) {
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int i;
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reverse_func ReverseLine;
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#if defined(HAS_REVERSE_LINE_NEON)
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if (libyuv::TestCpuFlag(libyuv::kCpuHasNEON) &&
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(width % 16 == 0) &&
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IS_ALIGNED(src, 16) && (src_stride % 16 == 0) &&
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IS_ALIGNED(dst, 16) && (dst_stride % 16 == 0)) {
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ReverseLine = ReverseLine_NEON;
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} else
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#endif
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#if defined(HAS_REVERSE_LINE_SSSE3)
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if (libyuv::TestCpuFlag(libyuv::kCpuHasSSSE3) &&
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(width % 16 == 0) &&
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IS_ALIGNED(src, 16) && (src_stride % 16 == 0) &&
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IS_ALIGNED(dst, 16) && (dst_stride % 16 == 0)) {
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ReverseLine = ReverseLine_SSSE3;
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} else
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#endif
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{
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ReverseLine = ReverseLine_C;
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}
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// Rotate by 180 is a mirror with the destination
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// written in reverse.
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dst += dst_stride * (height - 1);
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for (i = 0; i < height; ++i) {
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ReverseLine(src, dst, width);
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src += src_stride;
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dst -= dst_stride;
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}
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}
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static void TransposeUVWx8_C(const uint8* src, int src_stride,
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uint8* dst_a, int dst_stride_a,
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uint8* dst_b, int dst_stride_b,
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int w) {
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int i, j;
|
|
for (i = 0; i < w * 2; i += 2)
|
|
for (j = 0; j < 8; ++j) {
|
|
dst_a[j + ((i >> 1) * dst_stride_a)] = src[i + (j * src_stride)];
|
|
dst_b[j + ((i >> 1) * dst_stride_b)] = src[i + (j * src_stride) + 1];
|
|
}
|
|
}
|
|
|
|
static void TransposeUVWxH_C(const uint8* src, int src_stride,
|
|
uint8* dst_a, int dst_stride_a,
|
|
uint8* dst_b, int dst_stride_b,
|
|
int w, int h) {
|
|
int i, j;
|
|
for (i = 0; i < w*2; i += 2)
|
|
for (j = 0; j < h; ++j) {
|
|
dst_a[j + ((i >> 1) * dst_stride_a)] = src[i + (j * src_stride)];
|
|
dst_b[j + ((i >> 1) * dst_stride_b)] = src[i + (j * src_stride) + 1];
|
|
}
|
|
}
|
|
|
|
void TransposeUV(const uint8* src, int src_stride,
|
|
uint8* dst_a, int dst_stride_a,
|
|
uint8* dst_b, int dst_stride_b,
|
|
int width, int height) {
|
|
int i = height;
|
|
rotate_uv_wx8_func TransposeWx8;
|
|
rotate_uv_wxh_func TransposeWxH;
|
|
|
|
#if defined(HAS_TRANSPOSE_UVWX8_NEON)
|
|
if (libyuv::TestCpuFlag(libyuv::kCpuHasNEON) &&
|
|
(width % 8 == 0) &&
|
|
IS_ALIGNED(src, 16) && (src_stride % 8 == 0) &&
|
|
IS_ALIGNED(dst_a, 16) && (dst_stride_a % 8 == 0) &&
|
|
IS_ALIGNED(dst_b, 16) && (dst_stride_b % 8 == 0)) {
|
|
unsigned long long store_reg[8];
|
|
SaveRegisters_NEON(store_reg);
|
|
TransposeWx8 = TransposeUVWx8_NEON;
|
|
TransposeWxH = TransposeUVWxH_C;
|
|
} else
|
|
#endif
|
|
#if defined(HAS_TRANSPOSE_UVWX8_SSE2)
|
|
if (libyuv::TestCpuFlag(libyuv::kCpuHasSSE2) &&
|
|
(width % 8 == 0) &&
|
|
IS_ALIGNED(src, 16) && (src_stride % 8 == 0) &&
|
|
IS_ALIGNED(dst_a, 16) && (dst_stride_a % 8 == 0) &&
|
|
IS_ALIGNED(dst_b, 16) && (dst_stride_b % 8 == 0)) {
|
|
TransposeWx8 = TransposeUVWx8_SSE2;
|
|
TransposeWxH = TransposeUVWxH_C;
|
|
} else
|
|
#endif
|
|
{
|
|
TransposeWx8 = TransposeUVWx8_C;
|
|
TransposeWxH = TransposeUVWxH_C;
|
|
}
|
|
|
|
// work through the source in 8x8 tiles
|
|
while (i >= 8) {
|
|
TransposeWx8(src, src_stride,
|
|
dst_a, dst_stride_a,
|
|
dst_b, dst_stride_b,
|
|
width);
|
|
|
|
src += 8 * src_stride; // go down 8 rows
|
|
dst_a += 8; // move over 8 columns
|
|
dst_b += 8; // move over 8 columns
|
|
i -= 8;
|
|
}
|
|
|
|
TransposeWxH(src, src_stride,
|
|
dst_a, dst_stride_a,
|
|
dst_b, dst_stride_b,
|
|
width, i);
|
|
|
|
#if defined(HAS_TRANSPOSE_UVWX8_NEON)
|
|
if (libyuv::TestCpuFlag(libyuv::kCpuHasNEON)) {
|
|
RestoreRegisters_NEON(store_reg);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void RotateUV90(const uint8* src, int src_stride,
|
|
uint8* dst_a, int dst_stride_a,
|
|
uint8* dst_b, int dst_stride_b,
|
|
int width, int height) {
|
|
src += src_stride * (height - 1);
|
|
src_stride = -src_stride;
|
|
|
|
TransposeUV(src, src_stride,
|
|
dst_a, dst_stride_a,
|
|
dst_b, dst_stride_b,
|
|
width, height);
|
|
}
|
|
|
|
void RotateUV270(const uint8* src, int src_stride,
|
|
uint8* dst_a, int dst_stride_a,
|
|
uint8* dst_b, int dst_stride_b,
|
|
int width, int height) {
|
|
dst_a += dst_stride_a * (width - 1);
|
|
dst_b += dst_stride_b * (width - 1);
|
|
dst_stride_a = -dst_stride_a;
|
|
dst_stride_b = -dst_stride_b;
|
|
|
|
TransposeUV(src, src_stride,
|
|
dst_a, dst_stride_a,
|
|
dst_b, dst_stride_b,
|
|
width, height);
|
|
}
|
|
|
|
#if defined(WIN32) && !defined(COVERAGE_ENABLED)
|
|
#define HAS_REVERSE_LINE_UV_SSSE3
|
|
__declspec(naked)
|
|
void ReverseLineUV_SSSE3(const uint8* src,
|
|
uint8* dst_a, uint8* dst_b,
|
|
int width) {
|
|
__asm {
|
|
push edi
|
|
mov eax, [esp + 4 + 4] // src
|
|
mov edx, [esp + 4 + 8] // dst_a
|
|
mov edi, [esp + 4 + 12] // dst_b
|
|
mov ecx, [esp + 4 + 16] // width
|
|
movdqa xmm7, _kShuffleReverseUV
|
|
lea eax, [eax + 2 * ecx - 16]
|
|
|
|
convertloop :
|
|
movdqa xmm0, [eax]
|
|
lea eax, [eax - 16]
|
|
pshufb xmm0, xmm7
|
|
movlpd qword ptr [edx], xmm0
|
|
lea edx, [edx + 8]
|
|
movhpd qword ptr [edi], xmm0
|
|
lea edi, [edi + 8]
|
|
sub ecx, 8
|
|
ja convertloop
|
|
pop edi
|
|
ret
|
|
}
|
|
}
|
|
|
|
#elif (defined(__i386__) || defined(__x86_64__)) && \
|
|
!defined(COVERAGE_ENABLED) && !defined(TARGET_IPHONE_SIMULATOR)
|
|
#define HAS_REVERSE_LINE_UV_SSSE3
|
|
void ReverseLineUV_SSSE3(const uint8* src,
|
|
uint8* dst_a, uint8* dst_b,
|
|
int width) {
|
|
intptr_t temp_width = static_cast<intptr_t>(width);
|
|
asm volatile(
|
|
"movdqa (%4),%%xmm7\n"
|
|
"lea -0x10(%0,%3,2),%0\n"
|
|
"1:"
|
|
"movdqa (%0),%%xmm0\n"
|
|
"lea -0x10(%0),%0\n"
|
|
"pshufb %%xmm7,%%xmm0\n"
|
|
"movlpd %%xmm0,(%1)\n"
|
|
"lea 0x8(%1),%1\n"
|
|
"movhpd %%xmm0,(%2)\n"
|
|
"lea 0x8(%2),%2\n"
|
|
"sub $0x8,%3\n"
|
|
"ja 1b\n"
|
|
: "+r"(src), // %0
|
|
"+r"(dst_a), // %1
|
|
"+r"(dst_b), // %2
|
|
"+r"(temp_width) // %3
|
|
: "r"(kShuffleReverseUV) // %4
|
|
: "memory"
|
|
);
|
|
}
|
|
#endif
|
|
|
|
static void ReverseLineUV_C(const uint8* src,
|
|
uint8* dst_a, uint8* dst_b,
|
|
int width) {
|
|
int i;
|
|
src += width << 1;
|
|
for (i = 0; i < width; ++i) {
|
|
src -= 2;
|
|
dst_a[i] = src[0];
|
|
dst_b[i] = src[1];
|
|
}
|
|
}
|
|
|
|
void RotateUV180(const uint8* src, int src_stride,
|
|
uint8* dst_a, int dst_stride_a,
|
|
uint8* dst_b, int dst_stride_b,
|
|
int width, int height) {
|
|
int i;
|
|
reverse_uv_func ReverseLine;
|
|
|
|
// TODO(frkoenig) : do processor detection here.
|
|
#if defined(HAS_REVERSE_LINE_UV_NEON)
|
|
if (libyuv::TestCpuFlag(libyuv::kCpuHasNEON) &&
|
|
(width % 16 == 0) &&
|
|
IS_ALIGNED(src, 16) && (src_stride % 16 == 0) &&
|
|
IS_ALIGNED(dst_a, 16) && (dst_stride_a % 8 == 0) &&
|
|
IS_ALIGNED(dst_b, 16) && (dst_stride_b % 8 == 0) ) {
|
|
ReverseLine = ReverseLineUV_NEON;
|
|
} else
|
|
#endif
|
|
#if defined(HAS_REVERSE_LINE_UV_SSSE3)
|
|
if (libyuv::TestCpuFlag(libyuv::kCpuHasSSSE3) &&
|
|
(width % 16 == 0) &&
|
|
IS_ALIGNED(src, 16) && (src_stride % 16 == 0) &&
|
|
IS_ALIGNED(dst_a, 16) && (dst_stride_a % 8 == 0) &&
|
|
IS_ALIGNED(dst_b, 16) && (dst_stride_b % 8 == 0) ) {
|
|
ReverseLine = ReverseLineUV_SSSE3;
|
|
} else
|
|
#endif
|
|
{
|
|
ReverseLine = ReverseLineUV_C;
|
|
}
|
|
|
|
dst_a += dst_stride_a * (height - 1);
|
|
dst_b += dst_stride_b * (height - 1);
|
|
|
|
for (i = 0; i < height; ++i) {
|
|
ReverseLine(src, dst_a, dst_b, width);
|
|
|
|
src += src_stride; // down one line at a time
|
|
dst_a -= dst_stride_a; // nominally up one line at a time
|
|
dst_b -= dst_stride_b; // nominally up one line at a time
|
|
}
|
|
}
|
|
|
|
int I420Rotate(const uint8* src_y, int src_stride_y,
|
|
const uint8* src_u, int src_stride_u,
|
|
const uint8* src_v, int src_stride_v,
|
|
uint8* dst_y, int dst_stride_y,
|
|
uint8* dst_u, int dst_stride_u,
|
|
uint8* dst_v, int dst_stride_v,
|
|
int width, int height,
|
|
RotationMode mode) {
|
|
int halfwidth = (width + 1) >> 1;
|
|
int halfheight = (height + 1) >> 1;
|
|
|
|
// Negative height means invert the image.
|
|
if (height < 0) {
|
|
height = -height;
|
|
halfheight = (height + 1) >> 1;
|
|
src_y = src_y + (height - 1) * src_stride_y;
|
|
src_u = src_u + (halfheight - 1) * src_stride_u;
|
|
src_v = src_v + (halfheight - 1) * src_stride_v;
|
|
src_stride_y = -src_stride_y;
|
|
src_stride_u = -src_stride_u;
|
|
src_stride_v = -src_stride_v;
|
|
}
|
|
|
|
switch (mode) {
|
|
case kRotateNone:
|
|
// copy frame
|
|
return I420Copy(src_y, src_stride_y,
|
|
src_u, src_stride_u,
|
|
src_v, src_stride_v,
|
|
dst_y, dst_stride_y,
|
|
dst_u, dst_stride_u,
|
|
dst_v, dst_stride_v,
|
|
width, height);
|
|
case kRotateClockwise:
|
|
RotatePlane90(src_y, src_stride_y,
|
|
dst_y, dst_stride_y,
|
|
width, height);
|
|
RotatePlane90(src_u, src_stride_u,
|
|
dst_u, dst_stride_u,
|
|
halfwidth, halfheight);
|
|
RotatePlane90(src_v, src_stride_v,
|
|
dst_v, dst_stride_v,
|
|
halfwidth, halfheight);
|
|
return 0;
|
|
case kRotateCounterClockwise:
|
|
RotatePlane270(src_y, src_stride_y,
|
|
dst_y, dst_stride_y,
|
|
width, height);
|
|
RotatePlane270(src_u, src_stride_u,
|
|
dst_u, dst_stride_u,
|
|
halfwidth, halfheight);
|
|
RotatePlane270(src_v, src_stride_v,
|
|
dst_v, dst_stride_v,
|
|
halfwidth, halfheight);
|
|
return 0;
|
|
case kRotate180:
|
|
RotatePlane180(src_y, src_stride_y,
|
|
dst_y, dst_stride_y,
|
|
width, height);
|
|
RotatePlane180(src_u, src_stride_u,
|
|
dst_u, dst_stride_u,
|
|
halfwidth, halfheight);
|
|
RotatePlane180(src_v, src_stride_v,
|
|
dst_v, dst_stride_v,
|
|
halfwidth, halfheight);
|
|
return 0;
|
|
default:
|
|
break;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int NV12ToI420Rotate(const uint8* src_y, int src_stride_y,
|
|
const uint8* src_uv, int src_stride_uv,
|
|
uint8* dst_y, int dst_stride_y,
|
|
uint8* dst_u, int dst_stride_u,
|
|
uint8* dst_v, int dst_stride_v,
|
|
int width, int height,
|
|
RotationMode mode) {
|
|
int halfwidth = (width + 1) >> 1;
|
|
int halfheight = (height + 1) >> 1;
|
|
|
|
// Negative height means invert the image.
|
|
if (height < 0) {
|
|
height = -height;
|
|
halfheight = (height + 1) >> 1;
|
|
src_y = src_y + (height - 1) * src_stride_y;
|
|
src_uv = src_uv + (halfheight - 1) * src_stride_uv;
|
|
src_stride_y = -src_stride_y;
|
|
src_stride_uv = -src_stride_uv;
|
|
}
|
|
|
|
switch (mode) {
|
|
case kRotateNone:
|
|
// copy frame
|
|
return NV12ToI420(src_y, src_uv, src_stride_y,
|
|
dst_y, dst_stride_y,
|
|
dst_u, dst_stride_u,
|
|
dst_v, dst_stride_v,
|
|
width, height);
|
|
case kRotateClockwise:
|
|
RotatePlane90(src_y, src_stride_y,
|
|
dst_y, dst_stride_y,
|
|
width, height);
|
|
RotateUV90(src_uv, src_stride_uv,
|
|
dst_u, dst_stride_u,
|
|
dst_v, dst_stride_v,
|
|
halfwidth, halfheight);
|
|
return 0;
|
|
case kRotateCounterClockwise:
|
|
RotatePlane270(src_y, src_stride_y,
|
|
dst_y, dst_stride_y,
|
|
width, height);
|
|
RotateUV270(src_uv, src_stride_uv,
|
|
dst_u, dst_stride_u,
|
|
dst_v, dst_stride_v,
|
|
halfwidth, halfheight);
|
|
return 0;
|
|
case kRotate180:
|
|
RotatePlane180(src_y, src_stride_y,
|
|
dst_y, dst_stride_y,
|
|
width, height);
|
|
RotateUV180(src_uv, src_stride_uv,
|
|
dst_u, dst_stride_u,
|
|
dst_v, dst_stride_v,
|
|
halfwidth, halfheight);
|
|
return 0;
|
|
default:
|
|
break;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
} // namespace libyuv
|