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Diffstat (limited to 'media/libvpx/libvpx/third_party/libyuv/source/rotate_argb.cc')
| -rw-r--r-- | media/libvpx/libvpx/third_party/libyuv/source/rotate_argb.cc | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/third_party/libyuv/source/rotate_argb.cc b/media/libvpx/libvpx/third_party/libyuv/source/rotate_argb.cc new file mode 100644 index 0000000000..5a6e05376f --- /dev/null +++ b/media/libvpx/libvpx/third_party/libyuv/source/rotate_argb.cc @@ -0,0 +1,224 @@ +/* + * Copyright 2012 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/convert.h" +#include "libyuv/cpu_id.h" +#include "libyuv/planar_functions.h" +#include "libyuv/row.h" +#include "libyuv/scale_row.h" /* for ScaleARGBRowDownEven_ */ + +#ifdef __cplusplus +namespace libyuv { +extern "C" { +#endif + +static void ARGBTranspose(const uint8_t* src_argb, + int src_stride_argb, + uint8_t* dst_argb, + int dst_stride_argb, + int width, + int height) { + int i; + int src_pixel_step = src_stride_argb >> 2; + void (*ScaleARGBRowDownEven)( + const uint8_t* src_argb, ptrdiff_t src_stride_argb, int src_step, + uint8_t* dst_argb, int dst_width) = ScaleARGBRowDownEven_C; +#if defined(HAS_SCALEARGBROWDOWNEVEN_SSE2) + if (TestCpuFlag(kCpuHasSSE2)) { + ScaleARGBRowDownEven = ScaleARGBRowDownEven_Any_SSE2; + if (IS_ALIGNED(height, 4)) { // Width of dest. + ScaleARGBRowDownEven = ScaleARGBRowDownEven_SSE2; + } + } +#endif +#if defined(HAS_SCALEARGBROWDOWNEVEN_NEON) + if (TestCpuFlag(kCpuHasNEON)) { + ScaleARGBRowDownEven = ScaleARGBRowDownEven_Any_NEON; + if (IS_ALIGNED(height, 4)) { // Width of dest. + ScaleARGBRowDownEven = ScaleARGBRowDownEven_NEON; + } + } +#endif +#if defined(HAS_SCALEARGBROWDOWNEVEN_MSA) + if (TestCpuFlag(kCpuHasMSA)) { + ScaleARGBRowDownEven = ScaleARGBRowDownEven_Any_MSA; + if (IS_ALIGNED(height, 4)) { // Width of dest. + ScaleARGBRowDownEven = ScaleARGBRowDownEven_MSA; + } + } +#endif + + for (i = 0; i < width; ++i) { // column of source to row of dest. + ScaleARGBRowDownEven(src_argb, 0, src_pixel_step, dst_argb, height); + dst_argb += dst_stride_argb; + src_argb += 4; + } +} + +void ARGBRotate90(const uint8_t* src_argb, + int src_stride_argb, + uint8_t* dst_argb, + int dst_stride_argb, + int width, + int height) { + // Rotate by 90 is a ARGBTranspose 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_argb += src_stride_argb * (height - 1); + src_stride_argb = -src_stride_argb; + ARGBTranspose(src_argb, src_stride_argb, dst_argb, dst_stride_argb, width, + height); +} + +void ARGBRotate270(const uint8_t* src_argb, + int src_stride_argb, + uint8_t* dst_argb, + int dst_stride_argb, + int width, + int height) { + // Rotate by 270 is a ARGBTranspose 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_argb += dst_stride_argb * (width - 1); + dst_stride_argb = -dst_stride_argb; + ARGBTranspose(src_argb, src_stride_argb, dst_argb, dst_stride_argb, width, + height); +} + +void ARGBRotate180(const uint8_t* src_argb, + int src_stride_argb, + uint8_t* dst_argb, + int dst_stride_argb, + int width, + int height) { + // Swap first and last row and mirror the content. Uses a temporary row. + align_buffer_64(row, width * 4); + const uint8_t* src_bot = src_argb + src_stride_argb * (height - 1); + uint8_t* dst_bot = dst_argb + dst_stride_argb * (height - 1); + int half_height = (height + 1) >> 1; + int y; + void (*ARGBMirrorRow)(const uint8_t* src_argb, uint8_t* dst_argb, int width) = + ARGBMirrorRow_C; + void (*CopyRow)(const uint8_t* src_argb, uint8_t* dst_argb, int width) = + CopyRow_C; +#if defined(HAS_ARGBMIRRORROW_NEON) + if (TestCpuFlag(kCpuHasNEON)) { + ARGBMirrorRow = ARGBMirrorRow_Any_NEON; + if (IS_ALIGNED(width, 4)) { + ARGBMirrorRow = ARGBMirrorRow_NEON; + } + } +#endif +#if defined(HAS_ARGBMIRRORROW_SSE2) + if (TestCpuFlag(kCpuHasSSE2)) { + ARGBMirrorRow = ARGBMirrorRow_Any_SSE2; + if (IS_ALIGNED(width, 4)) { + ARGBMirrorRow = ARGBMirrorRow_SSE2; + } + } +#endif +#if defined(HAS_ARGBMIRRORROW_AVX2) + if (TestCpuFlag(kCpuHasAVX2)) { + ARGBMirrorRow = ARGBMirrorRow_Any_AVX2; + if (IS_ALIGNED(width, 8)) { + ARGBMirrorRow = ARGBMirrorRow_AVX2; + } + } +#endif +#if defined(HAS_ARGBMIRRORROW_MSA) + if (TestCpuFlag(kCpuHasMSA)) { + ARGBMirrorRow = ARGBMirrorRow_Any_MSA; + if (IS_ALIGNED(width, 16)) { + ARGBMirrorRow = ARGBMirrorRow_MSA; + } + } +#endif +#if defined(HAS_COPYROW_SSE2) + if (TestCpuFlag(kCpuHasSSE2)) { + CopyRow = IS_ALIGNED(width * 4, 32) ? CopyRow_SSE2 : CopyRow_Any_SSE2; + } +#endif +#if defined(HAS_COPYROW_AVX) + if (TestCpuFlag(kCpuHasAVX)) { + CopyRow = IS_ALIGNED(width * 4, 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 * 4, 32) ? CopyRow_NEON : CopyRow_Any_NEON; + } +#endif + + // Odd height will harmlessly mirror the middle row twice. + for (y = 0; y < half_height; ++y) { + ARGBMirrorRow(src_argb, row, width); // Mirror first row into a buffer + ARGBMirrorRow(src_bot, dst_argb, width); // Mirror last row into first row + CopyRow(row, dst_bot, width * 4); // Copy first mirrored row into last + src_argb += src_stride_argb; + dst_argb += dst_stride_argb; + src_bot -= src_stride_argb; + dst_bot -= dst_stride_argb; + } + free_aligned_buffer_64(row); +} + +LIBYUV_API +int ARGBRotate(const uint8_t* src_argb, + int src_stride_argb, + uint8_t* dst_argb, + int dst_stride_argb, + int width, + int height, + enum RotationMode mode) { + if (!src_argb || width <= 0 || height == 0 || !dst_argb) { + return -1; + } + + // Negative height means invert the image. + if (height < 0) { + height = -height; + src_argb = src_argb + (height - 1) * src_stride_argb; + src_stride_argb = -src_stride_argb; + } + + switch (mode) { + case kRotate0: + // copy frame + return ARGBCopy(src_argb, src_stride_argb, dst_argb, dst_stride_argb, + width, height); + case kRotate90: + ARGBRotate90(src_argb, src_stride_argb, dst_argb, dst_stride_argb, width, + height); + return 0; + case kRotate270: + ARGBRotate270(src_argb, src_stride_argb, dst_argb, dst_stride_argb, width, + height); + return 0; + case kRotate180: + ARGBRotate180(src_argb, src_stride_argb, dst_argb, dst_stride_argb, width, + height); + return 0; + default: + break; + } + return -1; +} + +#ifdef __cplusplus +} // extern "C" +} // namespace libyuv +#endif |