ref: 13284311eb5fe4c6bce739e2f721854dbd3092ea
dir: /third_party/libyuv/source/rotate.cc/
/*
* 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.h"
#include "libyuv/cpu_id.h"
#include "libyuv/convert.h"
#include "libyuv/planar_functions.h"
#include "libyuv/row.h"
#ifdef __cplusplus
namespace libyuv {
extern "C" {
#endif
#if !defined(LIBYUV_DISABLE_X86) && \
(defined(_M_IX86) || defined(__x86_64__) || defined(__i386__))
#if defined(__APPLE__) && defined(__i386__)
#define DECLARE_FUNCTION(name) \
".text \n" \
".private_extern _" #name " \n" \
".align 4,0x90 \n" \
"_" #name ": \n"
#elif defined(__MINGW32__) || defined(__CYGWIN__) && defined(__i386__)
#define DECLARE_FUNCTION(name) \
".text \n" \
".align 4,0x90 \n" \
"_" #name ": \n"
#else
#define DECLARE_FUNCTION(name) \
".text \n" \
".align 4,0x90 \n" \
#name ": \n"
#endif
#endif
#if !defined(LIBYUV_DISABLE_NEON) && !defined(__native_client__) && \
(defined(__ARM_NEON__) || defined(LIBYUV_NEON))
#define HAS_MIRRORROW_NEON
void MirrorRow_NEON(const uint8* src, uint8* dst, int width);
#define HAS_MIRRORROW_UV_NEON
void MirrorUVRow_NEON(const uint8* src, uint8* dst_a, uint8* dst_b, int width);
#define HAS_TRANSPOSE_WX8_NEON
void TransposeWx8_NEON(const uint8* src, int src_stride,
uint8* dst, int dst_stride, int width);
#define HAS_TRANSPOSE_UVWX8_NEON
void TransposeUVWx8_NEON(const uint8* src, int src_stride,
uint8* dst_a, int dst_stride_a,
uint8* dst_b, int dst_stride_b,
int width);
#endif // defined(__ARM_NEON__)
#if !defined(LIBYUV_DISABLE_MIPS) && !defined(__native_client__) && \
defined(__mips__) && \
defined(__mips_dsp) && (__mips_dsp_rev >= 2)
#define HAS_TRANSPOSE_WX8_MIPS_DSPR2
void TransposeWx8_MIPS_DSPR2(const uint8* src, int src_stride,
uint8* dst, int dst_stride, int width);
void TransposeWx8_FAST_MIPS_DSPR2(const uint8* src, int src_stride,
uint8* dst, int dst_stride, int width);
#define HAS_TRANSPOSE_UVWx8_MIPS_DSPR2
void TransposeUVWx8_MIPS_DSPR2(const uint8* src, int src_stride,
uint8* dst_a, int dst_stride_a,
uint8* dst_b, int dst_stride_b,
int width);
#endif // defined(__mips__)
#if !defined(LIBYUV_DISABLE_X86) && \
defined(_M_IX86) && defined(_MSC_VER)
#define HAS_TRANSPOSE_WX8_SSSE3
__declspec(naked) __declspec(align(16))
static void TransposeWx8_SSSE3(const uint8* src, int src_stride,
uint8* dst, int dst_stride, int width) {
__asm {
push edi
push esi
push ebp
mov eax, [esp + 12 + 4] // src
mov edi, [esp + 12 + 8] // src_stride
mov edx, [esp + 12 + 12] // dst
mov esi, [esp + 12 + 16] // dst_stride
mov ecx, [esp + 12 + 20] // width
// Read in the data from the source pointer.
// First round of bit swap.
align 4
convertloop:
movq xmm0, qword ptr [eax]
lea ebp, [eax + 8]
movq xmm1, qword ptr [eax + edi]
lea eax, [eax + 2 * edi]
punpcklbw xmm0, xmm1
movq xmm2, qword ptr [eax]
movdqa xmm1, xmm0
palignr xmm1, xmm1, 8
movq xmm3, qword ptr [eax + edi]
lea eax, [eax + 2 * edi]
punpcklbw xmm2, xmm3
movdqa xmm3, xmm2
movq xmm4, qword ptr [eax]
palignr xmm3, xmm3, 8
movq xmm5, qword ptr [eax + edi]
punpcklbw xmm4, xmm5
lea eax, [eax + 2 * edi]
movdqa xmm5, xmm4
movq xmm6, qword ptr [eax]
palignr xmm5, xmm5, 8
movq xmm7, qword ptr [eax + edi]
punpcklbw xmm6, xmm7
mov eax, ebp
movdqa xmm7, xmm6
palignr xmm7, xmm7, 8
// Second round of bit swap.
punpcklwd xmm0, xmm2
punpcklwd xmm1, xmm3
movdqa xmm2, xmm0
movdqa xmm3, xmm1
palignr xmm2, xmm2, 8
palignr xmm3, xmm3, 8
punpcklwd xmm4, xmm6
punpcklwd xmm5, xmm7
movdqa xmm6, xmm4
movdqa xmm7, xmm5
palignr xmm6, xmm6, 8
palignr xmm7, xmm7, 8
// Third round of bit swap.
// Write to the destination pointer.
punpckldq xmm0, xmm4
movq qword ptr [edx], xmm0
movdqa xmm4, xmm0
palignr xmm4, xmm4, 8
movq qword ptr [edx + esi], xmm4
lea edx, [edx + 2 * esi]
punpckldq xmm2, xmm6
movdqa xmm6, xmm2
palignr xmm6, xmm6, 8
movq qword ptr [edx], xmm2
punpckldq xmm1, xmm5
movq qword ptr [edx + esi], xmm6
lea edx, [edx + 2 * esi]
movdqa xmm5, xmm1
movq qword ptr [edx], xmm1
palignr xmm5, xmm5, 8
punpckldq xmm3, xmm7
movq qword ptr [edx + esi], xmm5
lea edx, [edx + 2 * esi]
movq qword ptr [edx], xmm3
movdqa xmm7, xmm3
palignr xmm7, xmm7, 8
sub ecx, 8
movq qword ptr [edx + esi], xmm7
lea edx, [edx + 2 * esi]
jg convertloop
pop ebp
pop esi
pop edi
ret
}
}
#define HAS_TRANSPOSE_UVWX8_SSE2
__declspec(naked) __declspec(align(16))
static void TransposeUVWx8_SSE2(const uint8* src, int src_stride,
uint8* dst_a, int dst_stride_a,
uint8* dst_b, int dst_stride_b,
int w) {
__asm {
push ebx
push esi
push edi
push ebp
mov eax, [esp + 16 + 4] // src
mov edi, [esp + 16 + 8] // src_stride
mov edx, [esp + 16 + 12] // dst_a
mov esi, [esp + 16 + 16] // dst_stride_a
mov ebx, [esp + 16 + 20] // dst_b
mov ebp, [esp + 16 + 24] // dst_stride_b
mov ecx, esp
sub esp, 4 + 16
and esp, ~15
mov [esp + 16], ecx
mov ecx, [ecx + 16 + 28] // w
align 4
convertloop:
// Read in the data from the source pointer.
// First round of bit swap.
movdqa xmm0, [eax]
movdqa xmm1, [eax + edi]
lea eax, [eax + 2 * edi]
movdqa xmm7, xmm0 // use xmm7 as temp register.
punpcklbw xmm0, xmm1
punpckhbw xmm7, xmm1
movdqa xmm1, xmm7
movdqa xmm2, [eax]
movdqa xmm3, [eax + edi]
lea eax, [eax + 2 * edi]
movdqa xmm7, xmm2
punpcklbw xmm2, xmm3
punpckhbw xmm7, xmm3
movdqa xmm3, xmm7
movdqa xmm4, [eax]
movdqa xmm5, [eax + edi]
lea eax, [eax + 2 * edi]
movdqa xmm7, xmm4
punpcklbw xmm4, xmm5
punpckhbw xmm7, xmm5
movdqa xmm5, xmm7
movdqa xmm6, [eax]
movdqa xmm7, [eax + edi]
lea eax, [eax + 2 * edi]
movdqa [esp], xmm5 // backup xmm5
neg edi
movdqa xmm5, xmm6 // use xmm5 as temp register.
punpcklbw xmm6, xmm7
punpckhbw xmm5, xmm7
movdqa xmm7, xmm5
lea eax, [eax + 8 * edi + 16]
neg edi
// Second round of bit swap.
movdqa xmm5, xmm0
punpcklwd xmm0, xmm2
punpckhwd xmm5, xmm2
movdqa xmm2, xmm5
movdqa xmm5, xmm1
punpcklwd xmm1, xmm3
punpckhwd xmm5, xmm3
movdqa xmm3, xmm5
movdqa xmm5, xmm4
punpcklwd xmm4, xmm6
punpckhwd xmm5, xmm6
movdqa xmm6, xmm5
movdqa xmm5, [esp] // restore xmm5
movdqa [esp], xmm6 // backup xmm6
movdqa xmm6, xmm5 // use xmm6 as temp register.
punpcklwd xmm5, xmm7
punpckhwd xmm6, xmm7
movdqa xmm7, xmm6
// Third round of bit swap.
// Write to the destination pointer.
movdqa xmm6, xmm0
punpckldq xmm0, xmm4
punpckhdq xmm6, xmm4
movdqa xmm4, xmm6
movdqa xmm6, [esp] // restore xmm6
movlpd qword ptr [edx], xmm0
movhpd qword ptr [ebx], xmm0
movlpd qword ptr [edx + esi], xmm4
lea edx, [edx + 2 * esi]
movhpd qword ptr [ebx + ebp], xmm4
lea ebx, [ebx + 2 * ebp]
movdqa xmm0, xmm2 // use xmm0 as the temp register.
punpckldq xmm2, xmm6
movlpd qword ptr [edx], xmm2
movhpd qword ptr [ebx], xmm2
punpckhdq xmm0, xmm6
movlpd qword ptr [edx + esi], xmm0
lea edx, [edx + 2 * esi]
movhpd qword ptr [ebx + ebp], xmm0
lea ebx, [ebx + 2 * ebp]
movdqa xmm0, xmm1 // use xmm0 as the temp register.
punpckldq xmm1, xmm5
movlpd qword ptr [edx], xmm1
movhpd qword ptr [ebx], xmm1
punpckhdq xmm0, xmm5
movlpd qword ptr [edx + esi], xmm0
lea edx, [edx + 2 * esi]
movhpd qword ptr [ebx + ebp], xmm0
lea ebx, [ebx + 2 * ebp]
movdqa xmm0, xmm3 // use xmm0 as the temp register.
punpckldq xmm3, xmm7
movlpd qword ptr [edx], xmm3
movhpd qword ptr [ebx], xmm3
punpckhdq xmm0, xmm7
sub ecx, 8
movlpd qword ptr [edx + esi], xmm0
lea edx, [edx + 2 * esi]
movhpd qword ptr [ebx + ebp], xmm0
lea ebx, [ebx + 2 * ebp]
jg convertloop
mov esp, [esp + 16]
pop ebp
pop edi
pop esi
pop ebx
ret
}
}
#elif !defined(LIBYUV_DISABLE_X86) && \
(defined(__i386__) || (defined(__x86_64__) && !defined(__native_client__)))
#define HAS_TRANSPOSE_WX8_SSSE3
static void TransposeWx8_SSSE3(const uint8* src, int src_stride,
uint8* dst, int dst_stride, int width) {
asm volatile (
// Read in the data from the source pointer.
// First round of bit swap.
".p2align 2 \n"
"1: \n"
"movq (%0),%%xmm0 \n"
"movq (%0,%3),%%xmm1 \n"
"lea (%0,%3,2),%0 \n"
"punpcklbw %%xmm1,%%xmm0 \n"
"movq (%0),%%xmm2 \n"
"movdqa %%xmm0,%%xmm1 \n"
"palignr $0x8,%%xmm1,%%xmm1 \n"
"movq (%0,%3),%%xmm3 \n"
"lea (%0,%3,2),%0 \n"
"punpcklbw %%xmm3,%%xmm2 \n"
"movdqa %%xmm2,%%xmm3 \n"
"movq (%0),%%xmm4 \n"
"palignr $0x8,%%xmm3,%%xmm3 \n"
"movq (%0,%3),%%xmm5 \n"
"lea (%0,%3,2),%0 \n"
"punpcklbw %%xmm5,%%xmm4 \n"
"movdqa %%xmm4,%%xmm5 \n"
"movq (%0),%%xmm6 \n"
"palignr $0x8,%%xmm5,%%xmm5 \n"
"movq (%0,%3),%%xmm7 \n"
"lea (%0,%3,2),%0 \n"
"punpcklbw %%xmm7,%%xmm6 \n"
"neg %3 \n"
"movdqa %%xmm6,%%xmm7 \n"
"lea 0x8(%0,%3,8),%0 \n"
"palignr $0x8,%%xmm7,%%xmm7 \n"
"neg %3 \n"
// Second round of bit swap.
"punpcklwd %%xmm2,%%xmm0 \n"
"punpcklwd %%xmm3,%%xmm1 \n"
"movdqa %%xmm0,%%xmm2 \n"
"movdqa %%xmm1,%%xmm3 \n"
"palignr $0x8,%%xmm2,%%xmm2 \n"
"palignr $0x8,%%xmm3,%%xmm3 \n"
"punpcklwd %%xmm6,%%xmm4 \n"
"punpcklwd %%xmm7,%%xmm5 \n"
"movdqa %%xmm4,%%xmm6 \n"
"movdqa %%xmm5,%%xmm7 \n"
"palignr $0x8,%%xmm6,%%xmm6 \n"
"palignr $0x8,%%xmm7,%%xmm7 \n"
// Third round of bit swap.
// Write to the destination pointer.
"punpckldq %%xmm4,%%xmm0 \n"
"movq %%xmm0,(%1) \n"
"movdqa %%xmm0,%%xmm4 \n"
"palignr $0x8,%%xmm4,%%xmm4 \n"
"movq %%xmm4,(%1,%4) \n"
"lea (%1,%4,2),%1 \n"
"punpckldq %%xmm6,%%xmm2 \n"
"movdqa %%xmm2,%%xmm6 \n"
"movq %%xmm2,(%1) \n"
"palignr $0x8,%%xmm6,%%xmm6 \n"
"punpckldq %%xmm5,%%xmm1 \n"
"movq %%xmm6,(%1,%4) \n"
"lea (%1,%4,2),%1 \n"
"movdqa %%xmm1,%%xmm5 \n"
"movq %%xmm1,(%1) \n"
"palignr $0x8,%%xmm5,%%xmm5 \n"
"movq %%xmm5,(%1,%4) \n"
"lea (%1,%4,2),%1 \n"
"punpckldq %%xmm7,%%xmm3 \n"
"movq %%xmm3,(%1) \n"
"movdqa %%xmm3,%%xmm7 \n"
"palignr $0x8,%%xmm7,%%xmm7 \n"
"sub $0x8,%2 \n"
"movq %%xmm7,(%1,%4) \n"
"lea (%1,%4,2),%1 \n"
"jg 1b \n"
: "+r"(src), // %0
"+r"(dst), // %1
"+r"(width) // %2
: "r"((intptr_t)(src_stride)), // %3
"r"((intptr_t)(dst_stride)) // %4
: "memory", "cc"
#if defined(__SSE2__)
, "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7"
#endif
);
}
#if !defined(LIBYUV_DISABLE_X86) && defined(__i386__)
#define HAS_TRANSPOSE_UVWX8_SSE2
void TransposeUVWx8_SSE2(const uint8* src, int src_stride,
uint8* dst_a, int dst_stride_a,
uint8* dst_b, int dst_stride_b,
int w);
asm (
DECLARE_FUNCTION(TransposeUVWx8_SSE2)
"push %ebx \n"
"push %esi \n"
"push %edi \n"
"push %ebp \n"
"mov 0x14(%esp),%eax \n"
"mov 0x18(%esp),%edi \n"
"mov 0x1c(%esp),%edx \n"
"mov 0x20(%esp),%esi \n"
"mov 0x24(%esp),%ebx \n"
"mov 0x28(%esp),%ebp \n"
"mov %esp,%ecx \n"
"sub $0x14,%esp \n"
"and $0xfffffff0,%esp \n"
"mov %ecx,0x10(%esp) \n"
"mov 0x2c(%ecx),%ecx \n"
"1: \n"
"movdqa (%eax),%xmm0 \n"
"movdqa (%eax,%edi,1),%xmm1 \n"
"lea (%eax,%edi,2),%eax \n"
"movdqa %xmm0,%xmm7 \n"
"punpcklbw %xmm1,%xmm0 \n"
"punpckhbw %xmm1,%xmm7 \n"
"movdqa %xmm7,%xmm1 \n"
"movdqa (%eax),%xmm2 \n"
"movdqa (%eax,%edi,1),%xmm3 \n"
"lea (%eax,%edi,2),%eax \n"
"movdqa %xmm2,%xmm7 \n"
"punpcklbw %xmm3,%xmm2 \n"
"punpckhbw %xmm3,%xmm7 \n"
"movdqa %xmm7,%xmm3 \n"
"movdqa (%eax),%xmm4 \n"
"movdqa (%eax,%edi,1),%xmm5 \n"
"lea (%eax,%edi,2),%eax \n"
"movdqa %xmm4,%xmm7 \n"
"punpcklbw %xmm5,%xmm4 \n"
"punpckhbw %xmm5,%xmm7 \n"
"movdqa %xmm7,%xmm5 \n"
"movdqa (%eax),%xmm6 \n"
"movdqa (%eax,%edi,1),%xmm7 \n"
"lea (%eax,%edi,2),%eax \n"
"movdqa %xmm5,(%esp) \n"
"neg %edi \n"
"movdqa %xmm6,%xmm5 \n"
"punpcklbw %xmm7,%xmm6 \n"
"punpckhbw %xmm7,%xmm5 \n"
"movdqa %xmm5,%xmm7 \n"
"lea 0x10(%eax,%edi,8),%eax \n"
"neg %edi \n"
"movdqa %xmm0,%xmm5 \n"
"punpcklwd %xmm2,%xmm0 \n"
"punpckhwd %xmm2,%xmm5 \n"
"movdqa %xmm5,%xmm2 \n"
"movdqa %xmm1,%xmm5 \n"
"punpcklwd %xmm3,%xmm1 \n"
"punpckhwd %xmm3,%xmm5 \n"
"movdqa %xmm5,%xmm3 \n"
"movdqa %xmm4,%xmm5 \n"
"punpcklwd %xmm6,%xmm4 \n"
"punpckhwd %xmm6,%xmm5 \n"
"movdqa %xmm5,%xmm6 \n"
"movdqa (%esp),%xmm5 \n"
"movdqa %xmm6,(%esp) \n"
"movdqa %xmm5,%xmm6 \n"
"punpcklwd %xmm7,%xmm5 \n"
"punpckhwd %xmm7,%xmm6 \n"
"movdqa %xmm6,%xmm7 \n"
"movdqa %xmm0,%xmm6 \n"
"punpckldq %xmm4,%xmm0 \n"
"punpckhdq %xmm4,%xmm6 \n"
"movdqa %xmm6,%xmm4 \n"
"movdqa (%esp),%xmm6 \n"
"movlpd %xmm0,(%edx) \n"
"movhpd %xmm0,(%ebx) \n"
"movlpd %xmm4,(%edx,%esi,1) \n"
"lea (%edx,%esi,2),%edx \n"
"movhpd %xmm4,(%ebx,%ebp,1) \n"
"lea (%ebx,%ebp,2),%ebx \n"
"movdqa %xmm2,%xmm0 \n"
"punpckldq %xmm6,%xmm2 \n"
"movlpd %xmm2,(%edx) \n"
"movhpd %xmm2,(%ebx) \n"
"punpckhdq %xmm6,%xmm0 \n"
"movlpd %xmm0,(%edx,%esi,1) \n"
"lea (%edx,%esi,2),%edx \n"
"movhpd %xmm0,(%ebx,%ebp,1) \n"
"lea (%ebx,%ebp,2),%ebx \n"
"movdqa %xmm1,%xmm0 \n"
"punpckldq %xmm5,%xmm1 \n"
"movlpd %xmm1,(%edx) \n"
"movhpd %xmm1,(%ebx) \n"
"punpckhdq %xmm5,%xmm0 \n"
"movlpd %xmm0,(%edx,%esi,1) \n"
"lea (%edx,%esi,2),%edx \n"
"movhpd %xmm0,(%ebx,%ebp,1) \n"
"lea (%ebx,%ebp,2),%ebx \n"
"movdqa %xmm3,%xmm0 \n"
"punpckldq %xmm7,%xmm3 \n"
"movlpd %xmm3,(%edx) \n"
"movhpd %xmm3,(%ebx) \n"
"punpckhdq %xmm7,%xmm0 \n"
"sub $0x8,%ecx \n"
"movlpd %xmm0,(%edx,%esi,1) \n"
"lea (%edx,%esi,2),%edx \n"
"movhpd %xmm0,(%ebx,%ebp,1) \n"
"lea (%ebx,%ebp,2),%ebx \n"
"jg 1b \n"
"mov 0x10(%esp),%esp \n"
"pop %ebp \n"
"pop %edi \n"
"pop %esi \n"
"pop %ebx \n"
#if defined(__native_client__)
"pop %ecx \n"
"and $0xffffffe0,%ecx \n"
"jmp *%ecx \n"
#else
"ret \n"
#endif
);
#elif !defined(LIBYUV_DISABLE_X86) && !defined(__native_client__) && \
defined(__x86_64__)
// 64 bit version has enough registers to do 16x8 to 8x16 at a time.
#define HAS_TRANSPOSE_WX8_FAST_SSSE3
static void TransposeWx8_FAST_SSSE3(const uint8* src, int src_stride,
uint8* dst, int dst_stride, int width) {
asm volatile (
// Read in the data from the source pointer.
// First round of bit swap.
".p2align 2 \n"
"1: \n"
"movdqa (%0),%%xmm0 \n"
"movdqa (%0,%3),%%xmm1 \n"
"lea (%0,%3,2),%0 \n"
"movdqa %%xmm0,%%xmm8 \n"
"punpcklbw %%xmm1,%%xmm0 \n"
"punpckhbw %%xmm1,%%xmm8 \n"
"movdqa (%0),%%xmm2 \n"
"movdqa %%xmm0,%%xmm1 \n"
"movdqa %%xmm8,%%xmm9 \n"
"palignr $0x8,%%xmm1,%%xmm1 \n"
"palignr $0x8,%%xmm9,%%xmm9 \n"
"movdqa (%0,%3),%%xmm3 \n"
"lea (%0,%3,2),%0 \n"
"movdqa %%xmm2,%%xmm10 \n"
"punpcklbw %%xmm3,%%xmm2 \n"
"punpckhbw %%xmm3,%%xmm10 \n"
"movdqa %%xmm2,%%xmm3 \n"
"movdqa %%xmm10,%%xmm11 \n"
"movdqa (%0),%%xmm4 \n"
"palignr $0x8,%%xmm3,%%xmm3 \n"
"palignr $0x8,%%xmm11,%%xmm11 \n"
"movdqa (%0,%3),%%xmm5 \n"
"lea (%0,%3,2),%0 \n"
"movdqa %%xmm4,%%xmm12 \n"
"punpcklbw %%xmm5,%%xmm4 \n"
"punpckhbw %%xmm5,%%xmm12 \n"
"movdqa %%xmm4,%%xmm5 \n"
"movdqa %%xmm12,%%xmm13 \n"
"movdqa (%0),%%xmm6 \n"
"palignr $0x8,%%xmm5,%%xmm5 \n"
"palignr $0x8,%%xmm13,%%xmm13 \n"
"movdqa (%0,%3),%%xmm7 \n"
"lea (%0,%3,2),%0 \n"
"movdqa %%xmm6,%%xmm14 \n"
"punpcklbw %%xmm7,%%xmm6 \n"
"punpckhbw %%xmm7,%%xmm14 \n"
"neg %3 \n"
"movdqa %%xmm6,%%xmm7 \n"
"movdqa %%xmm14,%%xmm15 \n"
"lea 0x10(%0,%3,8),%0 \n"
"palignr $0x8,%%xmm7,%%xmm7 \n"
"palignr $0x8,%%xmm15,%%xmm15 \n"
"neg %3 \n"
// Second round of bit swap.
"punpcklwd %%xmm2,%%xmm0 \n"
"punpcklwd %%xmm3,%%xmm1 \n"
"movdqa %%xmm0,%%xmm2 \n"
"movdqa %%xmm1,%%xmm3 \n"
"palignr $0x8,%%xmm2,%%xmm2 \n"
"palignr $0x8,%%xmm3,%%xmm3 \n"
"punpcklwd %%xmm6,%%xmm4 \n"
"punpcklwd %%xmm7,%%xmm5 \n"
"movdqa %%xmm4,%%xmm6 \n"
"movdqa %%xmm5,%%xmm7 \n"
"palignr $0x8,%%xmm6,%%xmm6 \n"
"palignr $0x8,%%xmm7,%%xmm7 \n"
"punpcklwd %%xmm10,%%xmm8 \n"
"punpcklwd %%xmm11,%%xmm9 \n"
"movdqa %%xmm8,%%xmm10 \n"
"movdqa %%xmm9,%%xmm11 \n"
"palignr $0x8,%%xmm10,%%xmm10 \n"
"palignr $0x8,%%xmm11,%%xmm11 \n"
"punpcklwd %%xmm14,%%xmm12 \n"
"punpcklwd %%xmm15,%%xmm13 \n"
"movdqa %%xmm12,%%xmm14 \n"
"movdqa %%xmm13,%%xmm15 \n"
"palignr $0x8,%%xmm14,%%xmm14 \n"
"palignr $0x8,%%xmm15,%%xmm15 \n"
// Third round of bit swap.
// Write to the destination pointer.
"punpckldq %%xmm4,%%xmm0 \n"
"movq %%xmm0,(%1) \n"
"movdqa %%xmm0,%%xmm4 \n"
"palignr $0x8,%%xmm4,%%xmm4 \n"
"movq %%xmm4,(%1,%4) \n"
"lea (%1,%4,2),%1 \n"
"punpckldq %%xmm6,%%xmm2 \n"
"movdqa %%xmm2,%%xmm6 \n"
"movq %%xmm2,(%1) \n"
"palignr $0x8,%%xmm6,%%xmm6 \n"
"punpckldq %%xmm5,%%xmm1 \n"
"movq %%xmm6,(%1,%4) \n"
"lea (%1,%4,2),%1 \n"
"movdqa %%xmm1,%%xmm5 \n"
"movq %%xmm1,(%1) \n"
"palignr $0x8,%%xmm5,%%xmm5 \n"
"movq %%xmm5,(%1,%4) \n"
"lea (%1,%4,2),%1 \n"
"punpckldq %%xmm7,%%xmm3 \n"
"movq %%xmm3,(%1) \n"
"movdqa %%xmm3,%%xmm7 \n"
"palignr $0x8,%%xmm7,%%xmm7 \n"
"movq %%xmm7,(%1,%4) \n"
"lea (%1,%4,2),%1 \n"
"punpckldq %%xmm12,%%xmm8 \n"
"movq %%xmm8,(%1) \n"
"movdqa %%xmm8,%%xmm12 \n"
"palignr $0x8,%%xmm12,%%xmm12 \n"
"movq %%xmm12,(%1,%4) \n"
"lea (%1,%4,2),%1 \n"
"punpckldq %%xmm14,%%xmm10 \n"
"movdqa %%xmm10,%%xmm14 \n"
"movq %%xmm10,(%1) \n"
"palignr $0x8,%%xmm14,%%xmm14 \n"
"punpckldq %%xmm13,%%xmm9 \n"
"movq %%xmm14,(%1,%4) \n"
"lea (%1,%4,2),%1 \n"
"movdqa %%xmm9,%%xmm13 \n"
"movq %%xmm9,(%1) \n"
"palignr $0x8,%%xmm13,%%xmm13 \n"
"movq %%xmm13,(%1,%4) \n"
"lea (%1,%4,2),%1 \n"
"punpckldq %%xmm15,%%xmm11 \n"
"movq %%xmm11,(%1) \n"
"movdqa %%xmm11,%%xmm15 \n"
"palignr $0x8,%%xmm15,%%xmm15 \n"
"sub $0x10,%2 \n"
"movq %%xmm15,(%1,%4) \n"
"lea (%1,%4,2),%1 \n"
"jg 1b \n"
: "+r"(src), // %0
"+r"(dst), // %1
"+r"(width) // %2
: "r"((intptr_t)(src_stride)), // %3
"r"((intptr_t)(dst_stride)) // %4
: "memory", "cc",
"xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7",
"xmm8", "xmm9", "xmm10", "xmm11", "xmm12", "xmm13", "xmm14", "xmm15"
);
}
#define HAS_TRANSPOSE_UVWX8_SSE2
static void TransposeUVWx8_SSE2(const uint8* src, int src_stride,
uint8* dst_a, int dst_stride_a,
uint8* dst_b, int dst_stride_b,
int w) {
asm volatile (
// Read in the data from the source pointer.
// First round of bit swap.
".p2align 2 \n"
"1: \n"
"movdqa (%0),%%xmm0 \n"
"movdqa (%0,%4),%%xmm1 \n"
"lea (%0,%4,2),%0 \n"
"movdqa %%xmm0,%%xmm8 \n"
"punpcklbw %%xmm1,%%xmm0 \n"
"punpckhbw %%xmm1,%%xmm8 \n"
"movdqa %%xmm8,%%xmm1 \n"
"movdqa (%0),%%xmm2 \n"
"movdqa (%0,%4),%%xmm3 \n"
"lea (%0,%4,2),%0 \n"
"movdqa %%xmm2,%%xmm8 \n"
"punpcklbw %%xmm3,%%xmm2 \n"
"punpckhbw %%xmm3,%%xmm8 \n"
"movdqa %%xmm8,%%xmm3 \n"
"movdqa (%0),%%xmm4 \n"
"movdqa (%0,%4),%%xmm5 \n"
"lea (%0,%4,2),%0 \n"
"movdqa %%xmm4,%%xmm8 \n"
"punpcklbw %%xmm5,%%xmm4 \n"
"punpckhbw %%xmm5,%%xmm8 \n"
"movdqa %%xmm8,%%xmm5 \n"
"movdqa (%0),%%xmm6 \n"
"movdqa (%0,%4),%%xmm7 \n"
"lea (%0,%4,2),%0 \n"
"movdqa %%xmm6,%%xmm8 \n"
"punpcklbw %%xmm7,%%xmm6 \n"
"neg %4 \n"
"lea 0x10(%0,%4,8),%0 \n"
"punpckhbw %%xmm7,%%xmm8 \n"
"movdqa %%xmm8,%%xmm7 \n"
"neg %4 \n"
// Second round of bit swap.
"movdqa %%xmm0,%%xmm8 \n"
"movdqa %%xmm1,%%xmm9 \n"
"punpckhwd %%xmm2,%%xmm8 \n"
"punpckhwd %%xmm3,%%xmm9 \n"
"punpcklwd %%xmm2,%%xmm0 \n"
"punpcklwd %%xmm3,%%xmm1 \n"
"movdqa %%xmm8,%%xmm2 \n"
"movdqa %%xmm9,%%xmm3 \n"
"movdqa %%xmm4,%%xmm8 \n"
"movdqa %%xmm5,%%xmm9 \n"
"punpckhwd %%xmm6,%%xmm8 \n"
"punpckhwd %%xmm7,%%xmm9 \n"
"punpcklwd %%xmm6,%%xmm4 \n"
"punpcklwd %%xmm7,%%xmm5 \n"
"movdqa %%xmm8,%%xmm6 \n"
"movdqa %%xmm9,%%xmm7 \n"
// Third round of bit swap.
// Write to the destination pointer.
"movdqa %%xmm0,%%xmm8 \n"
"punpckldq %%xmm4,%%xmm0 \n"
"movlpd %%xmm0,(%1) \n" // Write back U channel
"movhpd %%xmm0,(%2) \n" // Write back V channel
"punpckhdq %%xmm4,%%xmm8 \n"
"movlpd %%xmm8,(%1,%5) \n"
"lea (%1,%5,2),%1 \n"
"movhpd %%xmm8,(%2,%6) \n"
"lea (%2,%6,2),%2 \n"
"movdqa %%xmm2,%%xmm8 \n"
"punpckldq %%xmm6,%%xmm2 \n"
"movlpd %%xmm2,(%1) \n"
"movhpd %%xmm2,(%2) \n"
"punpckhdq %%xmm6,%%xmm8 \n"
"movlpd %%xmm8,(%1,%5) \n"
"lea (%1,%5,2),%1 \n"
"movhpd %%xmm8,(%2,%6) \n"
"lea (%2,%6,2),%2 \n"
"movdqa %%xmm1,%%xmm8 \n"
"punpckldq %%xmm5,%%xmm1 \n"
"movlpd %%xmm1,(%1) \n"
"movhpd %%xmm1,(%2) \n"
"punpckhdq %%xmm5,%%xmm8 \n"
"movlpd %%xmm8,(%1,%5) \n"
"lea (%1,%5,2),%1 \n"
"movhpd %%xmm8,(%2,%6) \n"
"lea (%2,%6,2),%2 \n"
"movdqa %%xmm3,%%xmm8 \n"
"punpckldq %%xmm7,%%xmm3 \n"
"movlpd %%xmm3,(%1) \n"
"movhpd %%xmm3,(%2) \n"
"punpckhdq %%xmm7,%%xmm8 \n"
"sub $0x8,%3 \n"
"movlpd %%xmm8,(%1,%5) \n"
"lea (%1,%5,2),%1 \n"
"movhpd %%xmm8,(%2,%6) \n"
"lea (%2,%6,2),%2 \n"
"jg 1b \n"
: "+r"(src), // %0
"+r"(dst_a), // %1
"+r"(dst_b), // %2
"+r"(w) // %3
: "r"((intptr_t)(src_stride)), // %4
"r"((intptr_t)(dst_stride_a)), // %5
"r"((intptr_t)(dst_stride_b)) // %6
: "memory", "cc",
"xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7",
"xmm8", "xmm9"
);
}
#endif
#endif
static void TransposeWx8_C(const uint8* src, int src_stride,
uint8* 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;
}
}
static void TransposeWxH_C(const uint8* src, int src_stride,
uint8* 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];
}
}
}
LIBYUV_API
void TransposePlane(const uint8* src, int src_stride,
uint8* dst, int dst_stride,
int width, int height) {
int i = height;
void (*TransposeWx8)(const uint8* src, int src_stride,
uint8* dst, int dst_stride,
int width) = TransposeWx8_C;
#if defined(HAS_TRANSPOSE_WX8_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
TransposeWx8 = TransposeWx8_NEON;
}
#endif
#if defined(HAS_TRANSPOSE_WX8_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3) && IS_ALIGNED(width, 8)) {
TransposeWx8 = TransposeWx8_SSSE3;
}
#endif
#if defined(HAS_TRANSPOSE_WX8_FAST_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3) &&
IS_ALIGNED(width, 16) &&
IS_ALIGNED(src, 16) && IS_ALIGNED(src_stride, 16)) {
TransposeWx8 = TransposeWx8_FAST_SSSE3;
}
#endif
#if defined(HAS_TRANSPOSE_WX8_MIPS_DSPR2)
if (TestCpuFlag(kCpuHasMIPS_DSPR2)) {
if (IS_ALIGNED(width, 4) &&
IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4)) {
TransposeWx8 = TransposeWx8_FAST_MIPS_DSPR2;
} else {
TransposeWx8 = TransposeWx8_MIPS_DSPR2;
}
}
#endif
// Work across the source in 8x8 tiles
while (i >= 8) {
TransposeWx8(src, src_stride, dst, dst_stride, width);
src += 8 * src_stride; // Go down 8 rows.
dst += 8; // Move over 8 columns.
i -= 8;
}
TransposeWxH_C(src, src_stride, dst, dst_stride, width, i);
}
LIBYUV_API
void RotatePlane90(const uint8* src, int src_stride,
uint8* dst, int dst_stride,
int width, int height) {
// Rotate by 90 is a transpose with the source read
// from bottom to top. So set the source pointer to the end
// of the buffer and flip the sign of the source stride.
src += src_stride * (height - 1);
src_stride = -src_stride;
TransposePlane(src, src_stride, dst, dst_stride, width, height);
}
LIBYUV_API
void RotatePlane270(const uint8* src, int src_stride,
uint8* dst, int dst_stride,
int width, int height) {
// Rotate by 270 is a transpose with the destination written
// from bottom to top. So set the destination pointer to the end
// of the buffer and flip the sign of the destination stride.
dst += dst_stride * (width - 1);
dst_stride = -dst_stride;
TransposePlane(src, src_stride, dst, dst_stride, width, height);
}
LIBYUV_API
void RotatePlane180(const uint8* src, int src_stride,
uint8* dst, int dst_stride,
int width, int height) {
// Swap first and last row and mirror the content. Uses a temporary row.
align_buffer_64(row, width);
const uint8* src_bot = src + src_stride * (height - 1);
uint8* dst_bot = dst + dst_stride * (height - 1);
int half_height = (height + 1) >> 1;
int y;
void (*MirrorRow)(const uint8* src, uint8* dst, int width) = MirrorRow_C;
void (*CopyRow)(const uint8* src, uint8* dst, int width) = CopyRow_C;
#if defined(HAS_MIRRORROW_NEON)
if (TestCpuFlag(kCpuHasNEON) && IS_ALIGNED(width, 16)) {
MirrorRow = MirrorRow_NEON;
}
#endif
#if defined(HAS_MIRRORROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(width, 16) &&
IS_ALIGNED(src, 16) && IS_ALIGNED(src_stride, 16) &&
IS_ALIGNED(dst, 16) && IS_ALIGNED(dst_stride, 16)) {
MirrorRow = MirrorRow_SSE2;
}
#endif
#if defined(HAS_MIRRORROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3) && IS_ALIGNED(width, 16) &&
IS_ALIGNED(src, 16) && IS_ALIGNED(src_stride, 16) &&
IS_ALIGNED(dst, 16) && IS_ALIGNED(dst_stride, 16)) {
MirrorRow = MirrorRow_SSSE3;
}
#endif
#if defined(HAS_MIRRORROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2) && IS_ALIGNED(width, 32)) {
MirrorRow = MirrorRow_AVX2;
}
#endif
#if defined(HAS_MIRRORROW_MIPS_DSPR2)
if (TestCpuFlag(kCpuHasMIPS_DSPR2) &&
IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4) &&
IS_ALIGNED(dst, 4) && IS_ALIGNED(dst_stride, 4)) {
MirrorRow = MirrorRow_MIPS_DSPR2;
}
#endif
#if defined(HAS_COPYROW_NEON)
if (TestCpuFlag(kCpuHasNEON) && IS_ALIGNED(width, 32)) {
CopyRow = CopyRow_NEON;
}
#endif
#if defined(HAS_COPYROW_X86)
if (TestCpuFlag(kCpuHasX86) && IS_ALIGNED(width, 4)) {
CopyRow = CopyRow_X86;
}
#endif
#if defined(HAS_COPYROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(width, 32) &&
IS_ALIGNED(src, 16) && IS_ALIGNED(src_stride, 16) &&
IS_ALIGNED(dst, 16) && IS_ALIGNED(dst_stride, 16)) {
CopyRow = CopyRow_SSE2;
}
#endif
#if defined(HAS_COPYROW_ERMS)
if (TestCpuFlag(kCpuHasERMS)) {
CopyRow = CopyRow_ERMS;
}
#endif
#if defined(HAS_COPYROW_MIPS)
if (TestCpuFlag(kCpuHasMIPS)) {
CopyRow = CopyRow_MIPS;
}
#endif
// Odd height will harmlessly mirror the middle row twice.
for (y = 0; y < half_height; ++y) {
MirrorRow(src, row, width); // Mirror first row into a buffer
src += src_stride;
MirrorRow(src_bot, dst, width); // Mirror last row into first row
dst += dst_stride;
CopyRow(row, dst_bot, width); // Copy first mirrored row into last
src_bot -= src_stride;
dst_bot -= dst_stride;
}
free_aligned_buffer_64(row);
}
static void TransposeUVWx8_C(const uint8* src, int src_stride,
uint8* dst_a, int dst_stride_a,
uint8* 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;
}
}
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 width, int height) {
int i;
for (i = 0; i < width * 2; i += 2) {
int j;
for (j = 0; j < height; ++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];
}
}
}
LIBYUV_API
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;
void (*TransposeUVWx8)(const uint8* src, int src_stride,
uint8* dst_a, int dst_stride_a,
uint8* dst_b, int dst_stride_b,
int width) = TransposeUVWx8_C;
#if defined(HAS_TRANSPOSE_UVWX8_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
TransposeUVWx8 = TransposeUVWx8_NEON;
}
#elif defined(HAS_TRANSPOSE_UVWX8_SSE2)
if (TestCpuFlag(kCpuHasSSE2) &&
IS_ALIGNED(width, 8) &&
IS_ALIGNED(src, 16) && IS_ALIGNED(src_stride, 16)) {
TransposeUVWx8 = TransposeUVWx8_SSE2;
}
#elif defined(HAS_TRANSPOSE_UVWx8_MIPS_DSPR2)
if (TestCpuFlag(kCpuHasMIPS_DSPR2) && IS_ALIGNED(width, 2) &&
IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4)) {
TransposeUVWx8 = TransposeUVWx8_MIPS_DSPR2;
}
#endif
// Work through the source in 8x8 tiles.
while (i >= 8) {
TransposeUVWx8(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;
}
TransposeUVWxH_C(src, src_stride,
dst_a, dst_stride_a,
dst_b, dst_stride_b,
width, i);
}
LIBYUV_API
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);
}
LIBYUV_API
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);
}
// Rotate 180 is a horizontal and vertical flip.
LIBYUV_API
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;
void (*MirrorRowUV)(const uint8* src, uint8* dst_u, uint8* dst_v, int width) =
MirrorUVRow_C;
#if defined(HAS_MIRRORUVROW_NEON)
if (TestCpuFlag(kCpuHasNEON) && IS_ALIGNED(width, 8)) {
MirrorRowUV = MirrorUVRow_NEON;
}
#elif defined(HAS_MIRRORROW_UV_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3) && IS_ALIGNED(width, 16) &&
IS_ALIGNED(src, 16) && IS_ALIGNED(src_stride, 16)) {
MirrorRowUV = MirrorUVRow_SSSE3;
}
#elif defined(HAS_MIRRORUVROW_MIPS_DSPR2)
if (TestCpuFlag(kCpuHasMIPS_DSPR2) &&
IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4)) {
MirrorRowUV = MirrorUVRow_MIPS_DSPR2;
}
#endif
dst_a += dst_stride_a * (height - 1);
dst_b += dst_stride_b * (height - 1);
for (i = 0; i < height; ++i) {
MirrorRowUV(src, dst_a, dst_b, width);
src += src_stride;
dst_a -= dst_stride_a;
dst_b -= dst_stride_b;
}
}
LIBYUV_API
int RotatePlane(const uint8* src, int src_stride,
uint8* dst, int dst_stride,
int width, int height,
enum RotationMode mode) {
if (!src || width <= 0 || height == 0 || !dst) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
src = src + (height - 1) * src_stride;
src_stride = -src_stride;
}
switch (mode) {
case kRotate0:
// copy frame
CopyPlane(src, src_stride,
dst, dst_stride,
width, height);
return 0;
case kRotate90:
RotatePlane90(src, src_stride,
dst, dst_stride,
width, height);
return 0;
case kRotate270:
RotatePlane270(src, src_stride,
dst, dst_stride,
width, height);
return 0;
case kRotate180:
RotatePlane180(src, src_stride,
dst, dst_stride,
width, height);
return 0;
default:
break;
}
return -1;
}
LIBYUV_API
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,
enum RotationMode mode) {
int halfwidth = (width + 1) >> 1;
int halfheight = (height + 1) >> 1;
if (!src_y || !src_u || !src_v || width <= 0 || height == 0 ||
!dst_y || !dst_u || !dst_v) {
return -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 kRotate0:
// 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 kRotate90:
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 kRotate270:
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;
}
LIBYUV_API
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,
enum RotationMode mode) {
int halfwidth = (width + 1) >> 1;
int halfheight = (height + 1) >> 1;
if (!src_y || !src_uv || width <= 0 || height == 0 ||
!dst_y || !dst_u || !dst_v) {
return -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 kRotate0:
// copy frame
return NV12ToI420(src_y, src_stride_y,
src_uv, src_stride_uv,
dst_y, dst_stride_y,
dst_u, dst_stride_u,
dst_v, dst_stride_v,
width, height);
case kRotate90:
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 kRotate270:
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;
}
#ifdef __cplusplus
} // extern "C"
} // namespace libyuv
#endif