492 lines
15 KiB
C++
492 lines
15 KiB
C++
/*
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* Copyright 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/rotate.h"
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#include "libyuv/cpu_id.h"
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#include "libyuv/convert.h"
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#include "libyuv/planar_functions.h"
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#include "libyuv/rotate_row.h"
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#include "libyuv/row.h"
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#ifdef __cplusplus
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namespace libyuv {
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extern "C" {
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#endif
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LIBYUV_API
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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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void (*TransposeWx8)(const uint8* src, int src_stride,
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uint8* dst, int dst_stride, int width) = TransposeWx8_C;
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#if defined(HAS_TRANSPOSEWX8_NEON)
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if (TestCpuFlag(kCpuHasNEON)) {
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TransposeWx8 = TransposeWx8_NEON;
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}
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#endif
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#if defined(HAS_TRANSPOSEWX8_SSSE3)
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if (TestCpuFlag(kCpuHasSSSE3)) {
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TransposeWx8 = TransposeWx8_Any_SSSE3;
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if (IS_ALIGNED(width, 8)) {
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TransposeWx8 = TransposeWx8_SSSE3;
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}
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}
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#endif
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#if defined(HAS_TRANSPOSEWX8_FAST_SSSE3)
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if (TestCpuFlag(kCpuHasSSSE3)) {
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TransposeWx8 = TransposeWx8_Fast_Any_SSSE3;
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if (IS_ALIGNED(width, 16)) {
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TransposeWx8 = TransposeWx8_Fast_SSSE3;
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}
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}
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#endif
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#if defined(HAS_TRANSPOSEWX8_DSPR2)
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if (TestCpuFlag(kCpuHasDSPR2)) {
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if (IS_ALIGNED(width, 4) &&
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IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4)) {
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TransposeWx8 = TransposeWx8_Fast_DSPR2;
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} else {
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TransposeWx8 = TransposeWx8_DSPR2;
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}
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}
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#endif
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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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if (i > 0) {
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TransposeWxH_C(src, src_stride, dst, dst_stride, width, i);
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}
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}
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LIBYUV_API
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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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LIBYUV_API
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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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LIBYUV_API
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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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// Swap first and last row and mirror the content. Uses a temporary row.
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align_buffer_64(row, width);
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const uint8* src_bot = src + src_stride * (height - 1);
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uint8* dst_bot = dst + dst_stride * (height - 1);
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int half_height = (height + 1) >> 1;
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int y;
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void (*MirrorRow)(const uint8* src, uint8* dst, int width) = MirrorRow_C;
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void (*CopyRow)(const uint8* src, uint8* dst, int width) = CopyRow_C;
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#if defined(HAS_MIRRORROW_NEON)
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if (TestCpuFlag(kCpuHasNEON)) {
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MirrorRow = MirrorRow_Any_NEON;
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if (IS_ALIGNED(width, 16)) {
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MirrorRow = MirrorRow_NEON;
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}
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}
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#endif
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#if defined(HAS_MIRRORROW_SSSE3)
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if (TestCpuFlag(kCpuHasSSSE3)) {
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MirrorRow = MirrorRow_Any_SSSE3;
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if (IS_ALIGNED(width, 16)) {
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MirrorRow = MirrorRow_SSSE3;
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}
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}
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#endif
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#if defined(HAS_MIRRORROW_AVX2)
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if (TestCpuFlag(kCpuHasAVX2)) {
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MirrorRow = MirrorRow_Any_AVX2;
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if (IS_ALIGNED(width, 32)) {
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MirrorRow = MirrorRow_AVX2;
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}
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}
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#endif
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// TODO(fbarchard): Mirror on mips handle unaligned memory.
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#if defined(HAS_MIRRORROW_DSPR2)
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if (TestCpuFlag(kCpuHasDSPR2) &&
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IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4) &&
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IS_ALIGNED(dst, 4) && IS_ALIGNED(dst_stride, 4)) {
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MirrorRow = MirrorRow_DSPR2;
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}
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#endif
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#if defined(HAS_COPYROW_SSE2)
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if (TestCpuFlag(kCpuHasSSE2)) {
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CopyRow = IS_ALIGNED(width, 32) ? CopyRow_SSE2 : CopyRow_Any_SSE2;
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}
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#endif
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#if defined(HAS_COPYROW_AVX)
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if (TestCpuFlag(kCpuHasAVX)) {
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CopyRow = IS_ALIGNED(width, 64) ? CopyRow_AVX : CopyRow_Any_AVX;
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}
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#endif
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#if defined(HAS_COPYROW_ERMS)
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if (TestCpuFlag(kCpuHasERMS)) {
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CopyRow = CopyRow_ERMS;
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}
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#endif
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#if defined(HAS_COPYROW_NEON)
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if (TestCpuFlag(kCpuHasNEON)) {
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CopyRow = IS_ALIGNED(width, 32) ? CopyRow_NEON : CopyRow_Any_NEON;
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}
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#endif
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#if defined(HAS_COPYROW_MIPS)
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if (TestCpuFlag(kCpuHasMIPS)) {
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CopyRow = CopyRow_MIPS;
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}
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#endif
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// Odd height will harmlessly mirror the middle row twice.
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for (y = 0; y < half_height; ++y) {
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MirrorRow(src, row, width); // Mirror first row into a buffer
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src += src_stride;
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MirrorRow(src_bot, dst, width); // Mirror last row into first row
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dst += dst_stride;
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CopyRow(row, dst_bot, width); // Copy first mirrored row into last
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src_bot -= src_stride;
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dst_bot -= dst_stride;
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}
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free_aligned_buffer_64(row);
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}
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LIBYUV_API
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void TransposeUV(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, int height) {
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int i = height;
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void (*TransposeUVWx8)(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) = TransposeUVWx8_C;
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#if defined(HAS_TRANSPOSEUVWX8_NEON)
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if (TestCpuFlag(kCpuHasNEON)) {
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TransposeUVWx8 = TransposeUVWx8_NEON;
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}
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#endif
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#if defined(HAS_TRANSPOSEUVWX8_SSE2)
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if (TestCpuFlag(kCpuHasSSE2)) {
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TransposeUVWx8 = TransposeUVWx8_Any_SSE2;
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if (IS_ALIGNED(width, 8)) {
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TransposeUVWx8 = TransposeUVWx8_SSE2;
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}
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}
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#endif
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#if defined(HAS_TRANSPOSEUVWX8_DSPR2)
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if (TestCpuFlag(kCpuHasDSPR2) && IS_ALIGNED(width, 2) &&
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IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4)) {
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TransposeUVWx8 = TransposeUVWx8_DSPR2;
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}
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#endif
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// Work through the source in 8x8 tiles.
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while (i >= 8) {
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TransposeUVWx8(src, src_stride,
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dst_a, dst_stride_a,
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dst_b, dst_stride_b,
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width);
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src += 8 * src_stride; // Go down 8 rows.
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dst_a += 8; // Move over 8 columns.
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dst_b += 8; // Move over 8 columns.
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i -= 8;
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}
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if (i > 0) {
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TransposeUVWxH_C(src, src_stride,
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dst_a, dst_stride_a,
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dst_b, dst_stride_b,
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width, i);
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}
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}
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LIBYUV_API
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void RotateUV90(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, int height) {
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src += src_stride * (height - 1);
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src_stride = -src_stride;
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TransposeUV(src, src_stride,
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dst_a, dst_stride_a,
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dst_b, dst_stride_b,
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width, height);
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}
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LIBYUV_API
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void RotateUV270(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, int height) {
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dst_a += dst_stride_a * (width - 1);
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dst_b += dst_stride_b * (width - 1);
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dst_stride_a = -dst_stride_a;
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dst_stride_b = -dst_stride_b;
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TransposeUV(src, src_stride,
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dst_a, dst_stride_a,
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dst_b, dst_stride_b,
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width, height);
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}
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// Rotate 180 is a horizontal and vertical flip.
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LIBYUV_API
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void RotateUV180(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, int height) {
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int i;
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void (*MirrorUVRow)(const uint8* src, uint8* dst_u, uint8* dst_v, int width) =
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MirrorUVRow_C;
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#if defined(HAS_MIRRORUVROW_NEON)
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if (TestCpuFlag(kCpuHasNEON) && IS_ALIGNED(width, 8)) {
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MirrorUVRow = MirrorUVRow_NEON;
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}
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#endif
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#if defined(HAS_MIRRORUVROW_SSSE3)
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if (TestCpuFlag(kCpuHasSSSE3) && IS_ALIGNED(width, 16)) {
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MirrorUVRow = MirrorUVRow_SSSE3;
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}
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#endif
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#if defined(HAS_MIRRORUVROW_DSPR2)
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if (TestCpuFlag(kCpuHasDSPR2) &&
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IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4)) {
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MirrorUVRow = MirrorUVRow_DSPR2;
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}
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#endif
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dst_a += dst_stride_a * (height - 1);
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dst_b += dst_stride_b * (height - 1);
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for (i = 0; i < height; ++i) {
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MirrorUVRow(src, dst_a, dst_b, width);
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src += src_stride;
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dst_a -= dst_stride_a;
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dst_b -= dst_stride_b;
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}
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}
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LIBYUV_API
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int RotatePlane(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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enum RotationMode mode) {
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if (!src || width <= 0 || height == 0 || !dst) {
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return -1;
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}
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// Negative height means invert the image.
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if (height < 0) {
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height = -height;
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src = src + (height - 1) * src_stride;
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src_stride = -src_stride;
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}
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switch (mode) {
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case kRotate0:
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// copy frame
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CopyPlane(src, src_stride,
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dst, dst_stride,
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width, height);
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return 0;
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case kRotate90:
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RotatePlane90(src, src_stride,
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dst, dst_stride,
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width, height);
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return 0;
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case kRotate270:
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RotatePlane270(src, src_stride,
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dst, dst_stride,
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width, height);
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return 0;
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case kRotate180:
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RotatePlane180(src, src_stride,
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dst, dst_stride,
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width, height);
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return 0;
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default:
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break;
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}
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return -1;
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}
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LIBYUV_API
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int I420Rotate(const uint8* src_y, int src_stride_y,
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const uint8* src_u, int src_stride_u,
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const uint8* src_v, int src_stride_v,
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uint8* dst_y, int dst_stride_y,
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uint8* dst_u, int dst_stride_u,
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uint8* dst_v, int dst_stride_v,
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int width, int height,
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enum RotationMode mode) {
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int halfwidth = (width + 1) >> 1;
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int halfheight = (height + 1) >> 1;
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if (!src_y || !src_u || !src_v || width <= 0 || height == 0 ||
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!dst_y || !dst_u || !dst_v) {
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return -1;
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}
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// Negative height means invert the image.
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if (height < 0) {
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height = -height;
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halfheight = (height + 1) >> 1;
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src_y = src_y + (height - 1) * src_stride_y;
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src_u = src_u + (halfheight - 1) * src_stride_u;
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src_v = src_v + (halfheight - 1) * src_stride_v;
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src_stride_y = -src_stride_y;
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src_stride_u = -src_stride_u;
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src_stride_v = -src_stride_v;
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}
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switch (mode) {
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case kRotate0:
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// copy frame
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return I420Copy(src_y, src_stride_y,
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src_u, src_stride_u,
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src_v, src_stride_v,
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dst_y, dst_stride_y,
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dst_u, dst_stride_u,
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dst_v, dst_stride_v,
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width, height);
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case kRotate90:
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RotatePlane90(src_y, src_stride_y,
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dst_y, dst_stride_y,
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width, height);
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RotatePlane90(src_u, src_stride_u,
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dst_u, dst_stride_u,
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halfwidth, halfheight);
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RotatePlane90(src_v, src_stride_v,
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dst_v, dst_stride_v,
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halfwidth, halfheight);
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return 0;
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case kRotate270:
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RotatePlane270(src_y, src_stride_y,
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dst_y, dst_stride_y,
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width, height);
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RotatePlane270(src_u, src_stride_u,
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dst_u, dst_stride_u,
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halfwidth, halfheight);
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RotatePlane270(src_v, src_stride_v,
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dst_v, dst_stride_v,
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halfwidth, halfheight);
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return 0;
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case kRotate180:
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RotatePlane180(src_y, src_stride_y,
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dst_y, dst_stride_y,
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width, height);
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RotatePlane180(src_u, src_stride_u,
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dst_u, dst_stride_u,
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halfwidth, halfheight);
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RotatePlane180(src_v, src_stride_v,
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dst_v, dst_stride_v,
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halfwidth, halfheight);
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return 0;
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default:
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break;
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}
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return -1;
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}
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LIBYUV_API
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int NV12ToI420Rotate(const uint8* src_y, int src_stride_y,
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const uint8* src_uv, int src_stride_uv,
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uint8* dst_y, int dst_stride_y,
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uint8* dst_u, int dst_stride_u,
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uint8* dst_v, int dst_stride_v,
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int width, int height,
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enum RotationMode mode) {
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int halfwidth = (width + 1) >> 1;
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int halfheight = (height + 1) >> 1;
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if (!src_y || !src_uv || width <= 0 || height == 0 ||
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!dst_y || !dst_u || !dst_v) {
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return -1;
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}
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// Negative height means invert the image.
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if (height < 0) {
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height = -height;
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halfheight = (height + 1) >> 1;
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src_y = src_y + (height - 1) * src_stride_y;
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src_uv = src_uv + (halfheight - 1) * src_stride_uv;
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src_stride_y = -src_stride_y;
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src_stride_uv = -src_stride_uv;
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}
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switch (mode) {
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case kRotate0:
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// copy frame
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return NV12ToI420(src_y, src_stride_y,
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src_uv, src_stride_uv,
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dst_y, dst_stride_y,
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dst_u, dst_stride_u,
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dst_v, dst_stride_v,
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width, height);
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case kRotate90:
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RotatePlane90(src_y, src_stride_y,
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dst_y, dst_stride_y,
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width, height);
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RotateUV90(src_uv, src_stride_uv,
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dst_u, dst_stride_u,
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dst_v, dst_stride_v,
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halfwidth, halfheight);
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return 0;
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case kRotate270:
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RotatePlane270(src_y, src_stride_y,
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dst_y, dst_stride_y,
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width, height);
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RotateUV270(src_uv, src_stride_uv,
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dst_u, dst_stride_u,
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dst_v, dst_stride_v,
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halfwidth, halfheight);
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return 0;
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case kRotate180:
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RotatePlane180(src_y, src_stride_y,
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dst_y, dst_stride_y,
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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
|