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Diffstat (limited to 'media/libyuv/source/rotate.cc')
| -rw-r--r-- | media/libyuv/source/rotate.cc | 491 |
1 files changed, 491 insertions, 0 deletions
diff --git a/media/libyuv/source/rotate.cc b/media/libyuv/source/rotate.cc new file mode 100644 index 000000000..01ea5c407 --- /dev/null +++ b/media/libyuv/source/rotate.cc @@ -0,0 +1,491 @@ +/* + * 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/rotate_row.h" +#include "libyuv/row.h" + +#ifdef __cplusplus +namespace libyuv { +extern "C" { +#endif + +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_TRANSPOSEWX8_NEON) + if (TestCpuFlag(kCpuHasNEON)) { + TransposeWx8 = TransposeWx8_NEON; + } +#endif +#if defined(HAS_TRANSPOSEWX8_SSSE3) + if (TestCpuFlag(kCpuHasSSSE3)) { + TransposeWx8 = TransposeWx8_Any_SSSE3; + if (IS_ALIGNED(width, 8)) { + TransposeWx8 = TransposeWx8_SSSE3; + } + } +#endif +#if defined(HAS_TRANSPOSEWX8_FAST_SSSE3) + if (TestCpuFlag(kCpuHasSSSE3)) { + TransposeWx8 = TransposeWx8_Fast_Any_SSSE3; + if (IS_ALIGNED(width, 16)) { + TransposeWx8 = TransposeWx8_Fast_SSSE3; + } + } +#endif +#if defined(HAS_TRANSPOSEWX8_DSPR2) + if (TestCpuFlag(kCpuHasDSPR2)) { + if (IS_ALIGNED(width, 4) && + IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4)) { + TransposeWx8 = TransposeWx8_Fast_DSPR2; + } else { + TransposeWx8 = TransposeWx8_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; + } + + if (i > 0) { + 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)) { + MirrorRow = MirrorRow_Any_NEON; + if (IS_ALIGNED(width, 16)) { + MirrorRow = MirrorRow_NEON; + } + } +#endif +#if defined(HAS_MIRRORROW_SSSE3) + if (TestCpuFlag(kCpuHasSSSE3)) { + MirrorRow = MirrorRow_Any_SSSE3; + if (IS_ALIGNED(width, 16)) { + MirrorRow = MirrorRow_SSSE3; + } + } +#endif +#if defined(HAS_MIRRORROW_AVX2) + if (TestCpuFlag(kCpuHasAVX2)) { + MirrorRow = MirrorRow_Any_AVX2; + if (IS_ALIGNED(width, 32)) { + MirrorRow = MirrorRow_AVX2; + } + } +#endif +// TODO(fbarchard): Mirror on mips handle unaligned memory. +#if defined(HAS_MIRRORROW_DSPR2) + if (TestCpuFlag(kCpuHasDSPR2) && + IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4) && + IS_ALIGNED(dst, 4) && IS_ALIGNED(dst_stride, 4)) { + MirrorRow = MirrorRow_DSPR2; + } +#endif +#if defined(HAS_COPYROW_SSE2) + if (TestCpuFlag(kCpuHasSSE2)) { + CopyRow = IS_ALIGNED(width, 32) ? CopyRow_SSE2 : CopyRow_Any_SSE2; + } +#endif +#if defined(HAS_COPYROW_AVX) + if (TestCpuFlag(kCpuHasAVX)) { + CopyRow = IS_ALIGNED(width, 64) ? CopyRow_AVX : CopyRow_Any_AVX; + } +#endif +#if defined(HAS_COPYROW_ERMS) + if (TestCpuFlag(kCpuHasERMS)) { + CopyRow = CopyRow_ERMS; + } +#endif +#if defined(HAS_COPYROW_NEON) + if (TestCpuFlag(kCpuHasNEON)) { + CopyRow = IS_ALIGNED(width, 32) ? CopyRow_NEON : CopyRow_Any_NEON; + } +#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); +} + +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_TRANSPOSEUVWX8_NEON) + if (TestCpuFlag(kCpuHasNEON)) { + TransposeUVWx8 = TransposeUVWx8_NEON; + } +#endif +#if defined(HAS_TRANSPOSEUVWX8_SSE2) + if (TestCpuFlag(kCpuHasSSE2)) { + TransposeUVWx8 = TransposeUVWx8_Any_SSE2; + if (IS_ALIGNED(width, 8)) { + TransposeUVWx8 = TransposeUVWx8_SSE2; + } + } +#endif +#if defined(HAS_TRANSPOSEUVWX8_DSPR2) + if (TestCpuFlag(kCpuHasDSPR2) && IS_ALIGNED(width, 2) && + IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4)) { + TransposeUVWx8 = TransposeUVWx8_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; + } + + if (i > 0) { + 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 (*MirrorUVRow)(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)) { + MirrorUVRow = MirrorUVRow_NEON; + } +#endif +#if defined(HAS_MIRRORUVROW_SSSE3) + if (TestCpuFlag(kCpuHasSSSE3) && IS_ALIGNED(width, 16)) { + MirrorUVRow = MirrorUVRow_SSSE3; + } +#endif +#if defined(HAS_MIRRORUVROW_DSPR2) + if (TestCpuFlag(kCpuHasDSPR2) && + IS_ALIGNED(src, 4) && IS_ALIGNED(src_stride, 4)) { + MirrorUVRow = MirrorUVRow_DSPR2; + } +#endif + + dst_a += dst_stride_a * (height - 1); + dst_b += dst_stride_b * (height - 1); + + for (i = 0; i < height; ++i) { + MirrorUVRow(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 |