1900 lines
62 KiB
C++
1900 lines
62 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/scale.h"
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#include <assert.h>
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#include <string.h>
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#include "libyuv/cpu_id.h"
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#include "libyuv/planar_functions.h" // For CopyPlane
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#include "libyuv/row.h"
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#include "libyuv/scale_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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static __inline int Abs(int v) {
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return v >= 0 ? v : -v;
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}
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#define SUBSAMPLE(v, a, s) (v < 0) ? (-((-v + a) >> s)) : ((v + a) >> s)
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// Scale plane, 1/2
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// This is an optimized version for scaling down a plane to 1/2 of
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// its original size.
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static void ScalePlaneDown2(int src_width,
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int src_height,
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int dst_width,
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int dst_height,
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int src_stride,
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int dst_stride,
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const uint8* src_ptr,
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uint8* dst_ptr,
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enum FilterMode filtering) {
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int y;
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void (*ScaleRowDown2)(const uint8* src_ptr, ptrdiff_t src_stride,
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uint8* dst_ptr, int dst_width) =
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filtering == kFilterNone
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? ScaleRowDown2_C
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: (filtering == kFilterLinear ? ScaleRowDown2Linear_C
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: ScaleRowDown2Box_C);
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int row_stride = src_stride << 1;
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(void)src_width;
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(void)src_height;
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if (!filtering) {
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src_ptr += src_stride; // Point to odd rows.
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src_stride = 0;
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}
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#if defined(HAS_SCALEROWDOWN2_NEON)
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if (TestCpuFlag(kCpuHasNEON)) {
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ScaleRowDown2 =
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filtering == kFilterNone
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? ScaleRowDown2_Any_NEON
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: (filtering == kFilterLinear ? ScaleRowDown2Linear_Any_NEON
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: ScaleRowDown2Box_Any_NEON);
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if (IS_ALIGNED(dst_width, 16)) {
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ScaleRowDown2 = filtering == kFilterNone ? ScaleRowDown2_NEON
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: (filtering == kFilterLinear
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? ScaleRowDown2Linear_NEON
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: ScaleRowDown2Box_NEON);
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}
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}
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#endif
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#if defined(HAS_SCALEROWDOWN2_SSSE3)
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if (TestCpuFlag(kCpuHasSSSE3)) {
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ScaleRowDown2 =
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filtering == kFilterNone
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? ScaleRowDown2_Any_SSSE3
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: (filtering == kFilterLinear ? ScaleRowDown2Linear_Any_SSSE3
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: ScaleRowDown2Box_Any_SSSE3);
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if (IS_ALIGNED(dst_width, 16)) {
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ScaleRowDown2 =
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filtering == kFilterNone
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? ScaleRowDown2_SSSE3
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: (filtering == kFilterLinear ? ScaleRowDown2Linear_SSSE3
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: ScaleRowDown2Box_SSSE3);
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}
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}
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#endif
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#if defined(HAS_SCALEROWDOWN2_AVX2)
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if (TestCpuFlag(kCpuHasAVX2)) {
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ScaleRowDown2 =
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filtering == kFilterNone
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? ScaleRowDown2_Any_AVX2
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: (filtering == kFilterLinear ? ScaleRowDown2Linear_Any_AVX2
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: ScaleRowDown2Box_Any_AVX2);
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if (IS_ALIGNED(dst_width, 32)) {
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ScaleRowDown2 = filtering == kFilterNone ? ScaleRowDown2_AVX2
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: (filtering == kFilterLinear
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? ScaleRowDown2Linear_AVX2
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: ScaleRowDown2Box_AVX2);
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}
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}
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#endif
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#if defined(HAS_SCALEROWDOWN2_DSPR2)
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if (TestCpuFlag(kCpuHasDSPR2) && IS_ALIGNED(src_ptr, 4) &&
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IS_ALIGNED(src_stride, 4) && IS_ALIGNED(row_stride, 4) &&
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IS_ALIGNED(dst_ptr, 4) && IS_ALIGNED(dst_stride, 4)) {
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ScaleRowDown2 = filtering ? ScaleRowDown2Box_DSPR2 : ScaleRowDown2_DSPR2;
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}
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#endif
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#if defined(HAS_SCALEROWDOWN2_MSA)
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if (TestCpuFlag(kCpuHasMSA)) {
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ScaleRowDown2 =
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filtering == kFilterNone
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? ScaleRowDown2_Any_MSA
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: (filtering == kFilterLinear ? ScaleRowDown2Linear_Any_MSA
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: ScaleRowDown2Box_Any_MSA);
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if (IS_ALIGNED(dst_width, 32)) {
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ScaleRowDown2 = filtering == kFilterNone ? ScaleRowDown2_MSA
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: (filtering == kFilterLinear
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? ScaleRowDown2Linear_MSA
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: ScaleRowDown2Box_MSA);
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}
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}
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#endif
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if (filtering == kFilterLinear) {
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src_stride = 0;
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}
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// TODO(fbarchard): Loop through source height to allow odd height.
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for (y = 0; y < dst_height; ++y) {
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ScaleRowDown2(src_ptr, src_stride, dst_ptr, dst_width);
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src_ptr += row_stride;
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dst_ptr += dst_stride;
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}
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}
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static void ScalePlaneDown2_16(int src_width,
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int src_height,
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int dst_width,
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int dst_height,
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int src_stride,
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int dst_stride,
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const uint16* src_ptr,
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uint16* dst_ptr,
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enum FilterMode filtering) {
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int y;
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void (*ScaleRowDown2)(const uint16* src_ptr, ptrdiff_t src_stride,
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uint16* dst_ptr, int dst_width) =
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filtering == kFilterNone
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? ScaleRowDown2_16_C
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: (filtering == kFilterLinear ? ScaleRowDown2Linear_16_C
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: ScaleRowDown2Box_16_C);
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int row_stride = src_stride << 1;
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(void)src_width;
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(void)src_height;
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if (!filtering) {
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src_ptr += src_stride; // Point to odd rows.
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src_stride = 0;
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}
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#if defined(HAS_SCALEROWDOWN2_16_NEON)
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if (TestCpuFlag(kCpuHasNEON) && IS_ALIGNED(dst_width, 16)) {
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ScaleRowDown2 =
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filtering ? ScaleRowDown2Box_16_NEON : ScaleRowDown2_16_NEON;
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}
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#endif
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#if defined(HAS_SCALEROWDOWN2_16_SSE2)
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if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(dst_width, 16)) {
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ScaleRowDown2 =
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filtering == kFilterNone
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? ScaleRowDown2_16_SSE2
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: (filtering == kFilterLinear ? ScaleRowDown2Linear_16_SSE2
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: ScaleRowDown2Box_16_SSE2);
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}
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#endif
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#if defined(HAS_SCALEROWDOWN2_16_DSPR2)
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if (TestCpuFlag(kCpuHasDSPR2) && IS_ALIGNED(src_ptr, 4) &&
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IS_ALIGNED(src_stride, 4) && IS_ALIGNED(row_stride, 4) &&
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IS_ALIGNED(dst_ptr, 4) && IS_ALIGNED(dst_stride, 4)) {
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ScaleRowDown2 =
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filtering ? ScaleRowDown2Box_16_DSPR2 : ScaleRowDown2_16_DSPR2;
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}
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#endif
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if (filtering == kFilterLinear) {
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src_stride = 0;
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}
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// TODO(fbarchard): Loop through source height to allow odd height.
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for (y = 0; y < dst_height; ++y) {
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ScaleRowDown2(src_ptr, src_stride, dst_ptr, dst_width);
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src_ptr += row_stride;
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dst_ptr += dst_stride;
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}
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}
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// Scale plane, 1/4
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// This is an optimized version for scaling down a plane to 1/4 of
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// its original size.
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static void ScalePlaneDown4(int src_width,
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int src_height,
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int dst_width,
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int dst_height,
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int src_stride,
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int dst_stride,
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const uint8* src_ptr,
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uint8* dst_ptr,
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enum FilterMode filtering) {
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int y;
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void (*ScaleRowDown4)(const uint8* src_ptr, ptrdiff_t src_stride,
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uint8* dst_ptr, int dst_width) =
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filtering ? ScaleRowDown4Box_C : ScaleRowDown4_C;
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int row_stride = src_stride << 2;
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(void)src_width;
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(void)src_height;
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if (!filtering) {
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src_ptr += src_stride * 2; // Point to row 2.
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src_stride = 0;
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}
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#if defined(HAS_SCALEROWDOWN4_NEON)
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if (TestCpuFlag(kCpuHasNEON)) {
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ScaleRowDown4 =
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filtering ? ScaleRowDown4Box_Any_NEON : ScaleRowDown4_Any_NEON;
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if (IS_ALIGNED(dst_width, 8)) {
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ScaleRowDown4 = filtering ? ScaleRowDown4Box_NEON : ScaleRowDown4_NEON;
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}
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}
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#endif
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#if defined(HAS_SCALEROWDOWN4_SSSE3)
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if (TestCpuFlag(kCpuHasSSSE3)) {
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ScaleRowDown4 =
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filtering ? ScaleRowDown4Box_Any_SSSE3 : ScaleRowDown4_Any_SSSE3;
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if (IS_ALIGNED(dst_width, 8)) {
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ScaleRowDown4 = filtering ? ScaleRowDown4Box_SSSE3 : ScaleRowDown4_SSSE3;
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}
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}
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#endif
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#if defined(HAS_SCALEROWDOWN4_AVX2)
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if (TestCpuFlag(kCpuHasAVX2)) {
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ScaleRowDown4 =
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filtering ? ScaleRowDown4Box_Any_AVX2 : ScaleRowDown4_Any_AVX2;
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if (IS_ALIGNED(dst_width, 16)) {
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ScaleRowDown4 = filtering ? ScaleRowDown4Box_AVX2 : ScaleRowDown4_AVX2;
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}
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}
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#endif
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#if defined(HAS_SCALEROWDOWN4_DSPR2)
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if (TestCpuFlag(kCpuHasDSPR2) && IS_ALIGNED(row_stride, 4) &&
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IS_ALIGNED(src_ptr, 4) && IS_ALIGNED(src_stride, 4) &&
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IS_ALIGNED(dst_ptr, 4) && IS_ALIGNED(dst_stride, 4)) {
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ScaleRowDown4 = filtering ? ScaleRowDown4Box_DSPR2 : ScaleRowDown4_DSPR2;
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}
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#endif
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#if defined(HAS_SCALEROWDOWN4_MSA)
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if (TestCpuFlag(kCpuHasMSA)) {
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ScaleRowDown4 =
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filtering ? ScaleRowDown4Box_Any_MSA : ScaleRowDown4_Any_MSA;
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if (IS_ALIGNED(dst_width, 16)) {
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ScaleRowDown4 = filtering ? ScaleRowDown4Box_MSA : ScaleRowDown4_MSA;
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}
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}
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#endif
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if (filtering == kFilterLinear) {
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src_stride = 0;
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}
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for (y = 0; y < dst_height; ++y) {
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ScaleRowDown4(src_ptr, src_stride, dst_ptr, dst_width);
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src_ptr += row_stride;
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dst_ptr += dst_stride;
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}
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}
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static void ScalePlaneDown4_16(int src_width,
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int src_height,
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int dst_width,
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int dst_height,
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int src_stride,
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int dst_stride,
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const uint16* src_ptr,
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uint16* dst_ptr,
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enum FilterMode filtering) {
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int y;
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void (*ScaleRowDown4)(const uint16* src_ptr, ptrdiff_t src_stride,
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uint16* dst_ptr, int dst_width) =
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filtering ? ScaleRowDown4Box_16_C : ScaleRowDown4_16_C;
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int row_stride = src_stride << 2;
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(void)src_width;
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(void)src_height;
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if (!filtering) {
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src_ptr += src_stride * 2; // Point to row 2.
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src_stride = 0;
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}
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#if defined(HAS_SCALEROWDOWN4_16_NEON)
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if (TestCpuFlag(kCpuHasNEON) && IS_ALIGNED(dst_width, 8)) {
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ScaleRowDown4 =
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filtering ? ScaleRowDown4Box_16_NEON : ScaleRowDown4_16_NEON;
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}
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#endif
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#if defined(HAS_SCALEROWDOWN4_16_SSE2)
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if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(dst_width, 8)) {
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ScaleRowDown4 =
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filtering ? ScaleRowDown4Box_16_SSE2 : ScaleRowDown4_16_SSE2;
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}
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#endif
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#if defined(HAS_SCALEROWDOWN4_16_DSPR2)
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if (TestCpuFlag(kCpuHasDSPR2) && IS_ALIGNED(row_stride, 4) &&
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IS_ALIGNED(src_ptr, 4) && IS_ALIGNED(src_stride, 4) &&
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IS_ALIGNED(dst_ptr, 4) && IS_ALIGNED(dst_stride, 4)) {
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ScaleRowDown4 =
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filtering ? ScaleRowDown4Box_16_DSPR2 : ScaleRowDown4_16_DSPR2;
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}
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#endif
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if (filtering == kFilterLinear) {
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src_stride = 0;
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}
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for (y = 0; y < dst_height; ++y) {
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ScaleRowDown4(src_ptr, src_stride, dst_ptr, dst_width);
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src_ptr += row_stride;
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dst_ptr += dst_stride;
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}
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}
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// Scale plane down, 3/4
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static void ScalePlaneDown34(int src_width,
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int src_height,
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int dst_width,
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int dst_height,
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int src_stride,
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int dst_stride,
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const uint8* src_ptr,
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uint8* dst_ptr,
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enum FilterMode filtering) {
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int y;
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void (*ScaleRowDown34_0)(const uint8* src_ptr, ptrdiff_t src_stride,
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uint8* dst_ptr, int dst_width);
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void (*ScaleRowDown34_1)(const uint8* src_ptr, ptrdiff_t src_stride,
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uint8* dst_ptr, int dst_width);
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const int filter_stride = (filtering == kFilterLinear) ? 0 : src_stride;
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(void)src_width;
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(void)src_height;
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assert(dst_width % 3 == 0);
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if (!filtering) {
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ScaleRowDown34_0 = ScaleRowDown34_C;
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ScaleRowDown34_1 = ScaleRowDown34_C;
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} else {
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ScaleRowDown34_0 = ScaleRowDown34_0_Box_C;
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ScaleRowDown34_1 = ScaleRowDown34_1_Box_C;
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}
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#if defined(HAS_SCALEROWDOWN34_NEON)
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if (TestCpuFlag(kCpuHasNEON)) {
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if (!filtering) {
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ScaleRowDown34_0 = ScaleRowDown34_Any_NEON;
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ScaleRowDown34_1 = ScaleRowDown34_Any_NEON;
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} else {
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ScaleRowDown34_0 = ScaleRowDown34_0_Box_Any_NEON;
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ScaleRowDown34_1 = ScaleRowDown34_1_Box_Any_NEON;
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}
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if (dst_width % 24 == 0) {
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if (!filtering) {
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ScaleRowDown34_0 = ScaleRowDown34_NEON;
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ScaleRowDown34_1 = ScaleRowDown34_NEON;
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} else {
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ScaleRowDown34_0 = ScaleRowDown34_0_Box_NEON;
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ScaleRowDown34_1 = ScaleRowDown34_1_Box_NEON;
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}
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}
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}
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#endif
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#if defined(HAS_SCALEROWDOWN34_MSA)
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if (TestCpuFlag(kCpuHasMSA)) {
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if (!filtering) {
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ScaleRowDown34_0 = ScaleRowDown34_Any_MSA;
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ScaleRowDown34_1 = ScaleRowDown34_Any_MSA;
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} else {
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ScaleRowDown34_0 = ScaleRowDown34_0_Box_Any_MSA;
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ScaleRowDown34_1 = ScaleRowDown34_1_Box_Any_MSA;
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}
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if (dst_width % 48 == 0) {
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if (!filtering) {
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ScaleRowDown34_0 = ScaleRowDown34_MSA;
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ScaleRowDown34_1 = ScaleRowDown34_MSA;
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} else {
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ScaleRowDown34_0 = ScaleRowDown34_0_Box_MSA;
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ScaleRowDown34_1 = ScaleRowDown34_1_Box_MSA;
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}
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}
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}
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#endif
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#if defined(HAS_SCALEROWDOWN34_SSSE3)
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if (TestCpuFlag(kCpuHasSSSE3)) {
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if (!filtering) {
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ScaleRowDown34_0 = ScaleRowDown34_Any_SSSE3;
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ScaleRowDown34_1 = ScaleRowDown34_Any_SSSE3;
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} else {
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ScaleRowDown34_0 = ScaleRowDown34_0_Box_Any_SSSE3;
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ScaleRowDown34_1 = ScaleRowDown34_1_Box_Any_SSSE3;
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}
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if (dst_width % 24 == 0) {
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if (!filtering) {
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ScaleRowDown34_0 = ScaleRowDown34_SSSE3;
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ScaleRowDown34_1 = ScaleRowDown34_SSSE3;
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} else {
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ScaleRowDown34_0 = ScaleRowDown34_0_Box_SSSE3;
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ScaleRowDown34_1 = ScaleRowDown34_1_Box_SSSE3;
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}
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}
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}
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#endif
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#if defined(HAS_SCALEROWDOWN34_DSPR2)
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if (TestCpuFlag(kCpuHasDSPR2) && (dst_width % 24 == 0) &&
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IS_ALIGNED(src_ptr, 4) && IS_ALIGNED(src_stride, 4) &&
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IS_ALIGNED(dst_ptr, 4) && IS_ALIGNED(dst_stride, 4)) {
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if (!filtering) {
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ScaleRowDown34_0 = ScaleRowDown34_DSPR2;
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ScaleRowDown34_1 = ScaleRowDown34_DSPR2;
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} else {
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ScaleRowDown34_0 = ScaleRowDown34_0_Box_DSPR2;
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ScaleRowDown34_1 = ScaleRowDown34_1_Box_DSPR2;
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}
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}
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#endif
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for (y = 0; y < dst_height - 2; y += 3) {
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ScaleRowDown34_0(src_ptr, filter_stride, dst_ptr, dst_width);
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src_ptr += src_stride;
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dst_ptr += dst_stride;
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ScaleRowDown34_1(src_ptr, filter_stride, dst_ptr, dst_width);
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src_ptr += src_stride;
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dst_ptr += dst_stride;
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ScaleRowDown34_0(src_ptr + src_stride, -filter_stride, dst_ptr, dst_width);
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src_ptr += src_stride * 2;
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dst_ptr += dst_stride;
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}
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// Remainder 1 or 2 rows with last row vertically unfiltered
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if ((dst_height % 3) == 2) {
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ScaleRowDown34_0(src_ptr, filter_stride, dst_ptr, dst_width);
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src_ptr += src_stride;
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dst_ptr += dst_stride;
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ScaleRowDown34_1(src_ptr, 0, dst_ptr, dst_width);
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} else if ((dst_height % 3) == 1) {
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ScaleRowDown34_0(src_ptr, 0, dst_ptr, dst_width);
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}
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}
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static void ScalePlaneDown34_16(int src_width,
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int src_height,
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int dst_width,
|
|
int dst_height,
|
|
int src_stride,
|
|
int dst_stride,
|
|
const uint16* src_ptr,
|
|
uint16* dst_ptr,
|
|
enum FilterMode filtering) {
|
|
int y;
|
|
void (*ScaleRowDown34_0)(const uint16* src_ptr, ptrdiff_t src_stride,
|
|
uint16* dst_ptr, int dst_width);
|
|
void (*ScaleRowDown34_1)(const uint16* src_ptr, ptrdiff_t src_stride,
|
|
uint16* dst_ptr, int dst_width);
|
|
const int filter_stride = (filtering == kFilterLinear) ? 0 : src_stride;
|
|
(void)src_width;
|
|
(void)src_height;
|
|
assert(dst_width % 3 == 0);
|
|
if (!filtering) {
|
|
ScaleRowDown34_0 = ScaleRowDown34_16_C;
|
|
ScaleRowDown34_1 = ScaleRowDown34_16_C;
|
|
} else {
|
|
ScaleRowDown34_0 = ScaleRowDown34_0_Box_16_C;
|
|
ScaleRowDown34_1 = ScaleRowDown34_1_Box_16_C;
|
|
}
|
|
#if defined(HAS_SCALEROWDOWN34_16_NEON)
|
|
if (TestCpuFlag(kCpuHasNEON) && (dst_width % 24 == 0)) {
|
|
if (!filtering) {
|
|
ScaleRowDown34_0 = ScaleRowDown34_16_NEON;
|
|
ScaleRowDown34_1 = ScaleRowDown34_16_NEON;
|
|
} else {
|
|
ScaleRowDown34_0 = ScaleRowDown34_0_Box_16_NEON;
|
|
ScaleRowDown34_1 = ScaleRowDown34_1_Box_16_NEON;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_SCALEROWDOWN34_16_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3) && (dst_width % 24 == 0)) {
|
|
if (!filtering) {
|
|
ScaleRowDown34_0 = ScaleRowDown34_16_SSSE3;
|
|
ScaleRowDown34_1 = ScaleRowDown34_16_SSSE3;
|
|
} else {
|
|
ScaleRowDown34_0 = ScaleRowDown34_0_Box_16_SSSE3;
|
|
ScaleRowDown34_1 = ScaleRowDown34_1_Box_16_SSSE3;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_SCALEROWDOWN34_16_DSPR2)
|
|
if (TestCpuFlag(kCpuHasDSPR2) && (dst_width % 24 == 0) &&
|
|
IS_ALIGNED(src_ptr, 4) && IS_ALIGNED(src_stride, 4) &&
|
|
IS_ALIGNED(dst_ptr, 4) && IS_ALIGNED(dst_stride, 4)) {
|
|
if (!filtering) {
|
|
ScaleRowDown34_0 = ScaleRowDown34_16_DSPR2;
|
|
ScaleRowDown34_1 = ScaleRowDown34_16_DSPR2;
|
|
} else {
|
|
ScaleRowDown34_0 = ScaleRowDown34_0_Box_16_DSPR2;
|
|
ScaleRowDown34_1 = ScaleRowDown34_1_Box_16_DSPR2;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
for (y = 0; y < dst_height - 2; y += 3) {
|
|
ScaleRowDown34_0(src_ptr, filter_stride, dst_ptr, dst_width);
|
|
src_ptr += src_stride;
|
|
dst_ptr += dst_stride;
|
|
ScaleRowDown34_1(src_ptr, filter_stride, dst_ptr, dst_width);
|
|
src_ptr += src_stride;
|
|
dst_ptr += dst_stride;
|
|
ScaleRowDown34_0(src_ptr + src_stride, -filter_stride, dst_ptr, dst_width);
|
|
src_ptr += src_stride * 2;
|
|
dst_ptr += dst_stride;
|
|
}
|
|
|
|
// Remainder 1 or 2 rows with last row vertically unfiltered
|
|
if ((dst_height % 3) == 2) {
|
|
ScaleRowDown34_0(src_ptr, filter_stride, dst_ptr, dst_width);
|
|
src_ptr += src_stride;
|
|
dst_ptr += dst_stride;
|
|
ScaleRowDown34_1(src_ptr, 0, dst_ptr, dst_width);
|
|
} else if ((dst_height % 3) == 1) {
|
|
ScaleRowDown34_0(src_ptr, 0, dst_ptr, dst_width);
|
|
}
|
|
}
|
|
|
|
// Scale plane, 3/8
|
|
// This is an optimized version for scaling down a plane to 3/8
|
|
// of its original size.
|
|
//
|
|
// Uses box filter arranges like this
|
|
// aaabbbcc -> abc
|
|
// aaabbbcc def
|
|
// aaabbbcc ghi
|
|
// dddeeeff
|
|
// dddeeeff
|
|
// dddeeeff
|
|
// ggghhhii
|
|
// ggghhhii
|
|
// Boxes are 3x3, 2x3, 3x2 and 2x2
|
|
|
|
static void ScalePlaneDown38(int src_width,
|
|
int src_height,
|
|
int dst_width,
|
|
int dst_height,
|
|
int src_stride,
|
|
int dst_stride,
|
|
const uint8* src_ptr,
|
|
uint8* dst_ptr,
|
|
enum FilterMode filtering) {
|
|
int y;
|
|
void (*ScaleRowDown38_3)(const uint8* src_ptr, ptrdiff_t src_stride,
|
|
uint8* dst_ptr, int dst_width);
|
|
void (*ScaleRowDown38_2)(const uint8* src_ptr, ptrdiff_t src_stride,
|
|
uint8* dst_ptr, int dst_width);
|
|
const int filter_stride = (filtering == kFilterLinear) ? 0 : src_stride;
|
|
assert(dst_width % 3 == 0);
|
|
(void)src_width;
|
|
(void)src_height;
|
|
if (!filtering) {
|
|
ScaleRowDown38_3 = ScaleRowDown38_C;
|
|
ScaleRowDown38_2 = ScaleRowDown38_C;
|
|
} else {
|
|
ScaleRowDown38_3 = ScaleRowDown38_3_Box_C;
|
|
ScaleRowDown38_2 = ScaleRowDown38_2_Box_C;
|
|
}
|
|
|
|
#if defined(HAS_SCALEROWDOWN38_NEON)
|
|
if (TestCpuFlag(kCpuHasNEON)) {
|
|
if (!filtering) {
|
|
ScaleRowDown38_3 = ScaleRowDown38_Any_NEON;
|
|
ScaleRowDown38_2 = ScaleRowDown38_Any_NEON;
|
|
} else {
|
|
ScaleRowDown38_3 = ScaleRowDown38_3_Box_Any_NEON;
|
|
ScaleRowDown38_2 = ScaleRowDown38_2_Box_Any_NEON;
|
|
}
|
|
if (dst_width % 12 == 0) {
|
|
if (!filtering) {
|
|
ScaleRowDown38_3 = ScaleRowDown38_NEON;
|
|
ScaleRowDown38_2 = ScaleRowDown38_NEON;
|
|
} else {
|
|
ScaleRowDown38_3 = ScaleRowDown38_3_Box_NEON;
|
|
ScaleRowDown38_2 = ScaleRowDown38_2_Box_NEON;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_SCALEROWDOWN38_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3)) {
|
|
if (!filtering) {
|
|
ScaleRowDown38_3 = ScaleRowDown38_Any_SSSE3;
|
|
ScaleRowDown38_2 = ScaleRowDown38_Any_SSSE3;
|
|
} else {
|
|
ScaleRowDown38_3 = ScaleRowDown38_3_Box_Any_SSSE3;
|
|
ScaleRowDown38_2 = ScaleRowDown38_2_Box_Any_SSSE3;
|
|
}
|
|
if (dst_width % 12 == 0 && !filtering) {
|
|
ScaleRowDown38_3 = ScaleRowDown38_SSSE3;
|
|
ScaleRowDown38_2 = ScaleRowDown38_SSSE3;
|
|
}
|
|
if (dst_width % 6 == 0 && filtering) {
|
|
ScaleRowDown38_3 = ScaleRowDown38_3_Box_SSSE3;
|
|
ScaleRowDown38_2 = ScaleRowDown38_2_Box_SSSE3;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_SCALEROWDOWN38_DSPR2)
|
|
if (TestCpuFlag(kCpuHasDSPR2) && (dst_width % 12 == 0) &&
|
|
IS_ALIGNED(src_ptr, 4) && IS_ALIGNED(src_stride, 4) &&
|
|
IS_ALIGNED(dst_ptr, 4) && IS_ALIGNED(dst_stride, 4)) {
|
|
if (!filtering) {
|
|
ScaleRowDown38_3 = ScaleRowDown38_DSPR2;
|
|
ScaleRowDown38_2 = ScaleRowDown38_DSPR2;
|
|
} else {
|
|
ScaleRowDown38_3 = ScaleRowDown38_3_Box_DSPR2;
|
|
ScaleRowDown38_2 = ScaleRowDown38_2_Box_DSPR2;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_SCALEROWDOWN38_MSA)
|
|
if (TestCpuFlag(kCpuHasMSA)) {
|
|
if (!filtering) {
|
|
ScaleRowDown38_3 = ScaleRowDown38_Any_MSA;
|
|
ScaleRowDown38_2 = ScaleRowDown38_Any_MSA;
|
|
} else {
|
|
ScaleRowDown38_3 = ScaleRowDown38_3_Box_Any_MSA;
|
|
ScaleRowDown38_2 = ScaleRowDown38_2_Box_Any_MSA;
|
|
}
|
|
if (dst_width % 12 == 0) {
|
|
if (!filtering) {
|
|
ScaleRowDown38_3 = ScaleRowDown38_MSA;
|
|
ScaleRowDown38_2 = ScaleRowDown38_MSA;
|
|
} else {
|
|
ScaleRowDown38_3 = ScaleRowDown38_3_Box_MSA;
|
|
ScaleRowDown38_2 = ScaleRowDown38_2_Box_MSA;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
for (y = 0; y < dst_height - 2; y += 3) {
|
|
ScaleRowDown38_3(src_ptr, filter_stride, dst_ptr, dst_width);
|
|
src_ptr += src_stride * 3;
|
|
dst_ptr += dst_stride;
|
|
ScaleRowDown38_3(src_ptr, filter_stride, dst_ptr, dst_width);
|
|
src_ptr += src_stride * 3;
|
|
dst_ptr += dst_stride;
|
|
ScaleRowDown38_2(src_ptr, filter_stride, dst_ptr, dst_width);
|
|
src_ptr += src_stride * 2;
|
|
dst_ptr += dst_stride;
|
|
}
|
|
|
|
// Remainder 1 or 2 rows with last row vertically unfiltered
|
|
if ((dst_height % 3) == 2) {
|
|
ScaleRowDown38_3(src_ptr, filter_stride, dst_ptr, dst_width);
|
|
src_ptr += src_stride * 3;
|
|
dst_ptr += dst_stride;
|
|
ScaleRowDown38_3(src_ptr, 0, dst_ptr, dst_width);
|
|
} else if ((dst_height % 3) == 1) {
|
|
ScaleRowDown38_3(src_ptr, 0, dst_ptr, dst_width);
|
|
}
|
|
}
|
|
|
|
static void ScalePlaneDown38_16(int src_width,
|
|
int src_height,
|
|
int dst_width,
|
|
int dst_height,
|
|
int src_stride,
|
|
int dst_stride,
|
|
const uint16* src_ptr,
|
|
uint16* dst_ptr,
|
|
enum FilterMode filtering) {
|
|
int y;
|
|
void (*ScaleRowDown38_3)(const uint16* src_ptr, ptrdiff_t src_stride,
|
|
uint16* dst_ptr, int dst_width);
|
|
void (*ScaleRowDown38_2)(const uint16* src_ptr, ptrdiff_t src_stride,
|
|
uint16* dst_ptr, int dst_width);
|
|
const int filter_stride = (filtering == kFilterLinear) ? 0 : src_stride;
|
|
(void)src_width;
|
|
(void)src_height;
|
|
assert(dst_width % 3 == 0);
|
|
if (!filtering) {
|
|
ScaleRowDown38_3 = ScaleRowDown38_16_C;
|
|
ScaleRowDown38_2 = ScaleRowDown38_16_C;
|
|
} else {
|
|
ScaleRowDown38_3 = ScaleRowDown38_3_Box_16_C;
|
|
ScaleRowDown38_2 = ScaleRowDown38_2_Box_16_C;
|
|
}
|
|
#if defined(HAS_SCALEROWDOWN38_16_NEON)
|
|
if (TestCpuFlag(kCpuHasNEON) && (dst_width % 12 == 0)) {
|
|
if (!filtering) {
|
|
ScaleRowDown38_3 = ScaleRowDown38_16_NEON;
|
|
ScaleRowDown38_2 = ScaleRowDown38_16_NEON;
|
|
} else {
|
|
ScaleRowDown38_3 = ScaleRowDown38_3_Box_16_NEON;
|
|
ScaleRowDown38_2 = ScaleRowDown38_2_Box_16_NEON;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_SCALEROWDOWN38_16_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3) && (dst_width % 24 == 0)) {
|
|
if (!filtering) {
|
|
ScaleRowDown38_3 = ScaleRowDown38_16_SSSE3;
|
|
ScaleRowDown38_2 = ScaleRowDown38_16_SSSE3;
|
|
} else {
|
|
ScaleRowDown38_3 = ScaleRowDown38_3_Box_16_SSSE3;
|
|
ScaleRowDown38_2 = ScaleRowDown38_2_Box_16_SSSE3;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_SCALEROWDOWN38_16_DSPR2)
|
|
if (TestCpuFlag(kCpuHasDSPR2) && (dst_width % 12 == 0) &&
|
|
IS_ALIGNED(src_ptr, 4) && IS_ALIGNED(src_stride, 4) &&
|
|
IS_ALIGNED(dst_ptr, 4) && IS_ALIGNED(dst_stride, 4)) {
|
|
if (!filtering) {
|
|
ScaleRowDown38_3 = ScaleRowDown38_16_DSPR2;
|
|
ScaleRowDown38_2 = ScaleRowDown38_16_DSPR2;
|
|
} else {
|
|
ScaleRowDown38_3 = ScaleRowDown38_3_Box_16_DSPR2;
|
|
ScaleRowDown38_2 = ScaleRowDown38_2_Box_16_DSPR2;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
for (y = 0; y < dst_height - 2; y += 3) {
|
|
ScaleRowDown38_3(src_ptr, filter_stride, dst_ptr, dst_width);
|
|
src_ptr += src_stride * 3;
|
|
dst_ptr += dst_stride;
|
|
ScaleRowDown38_3(src_ptr, filter_stride, dst_ptr, dst_width);
|
|
src_ptr += src_stride * 3;
|
|
dst_ptr += dst_stride;
|
|
ScaleRowDown38_2(src_ptr, filter_stride, dst_ptr, dst_width);
|
|
src_ptr += src_stride * 2;
|
|
dst_ptr += dst_stride;
|
|
}
|
|
|
|
// Remainder 1 or 2 rows with last row vertically unfiltered
|
|
if ((dst_height % 3) == 2) {
|
|
ScaleRowDown38_3(src_ptr, filter_stride, dst_ptr, dst_width);
|
|
src_ptr += src_stride * 3;
|
|
dst_ptr += dst_stride;
|
|
ScaleRowDown38_3(src_ptr, 0, dst_ptr, dst_width);
|
|
} else if ((dst_height % 3) == 1) {
|
|
ScaleRowDown38_3(src_ptr, 0, dst_ptr, dst_width);
|
|
}
|
|
}
|
|
|
|
#define MIN1(x) ((x) < 1 ? 1 : (x))
|
|
|
|
static __inline uint32 SumPixels(int iboxwidth, const uint16* src_ptr) {
|
|
uint32 sum = 0u;
|
|
int x;
|
|
assert(iboxwidth > 0);
|
|
for (x = 0; x < iboxwidth; ++x) {
|
|
sum += src_ptr[x];
|
|
}
|
|
return sum;
|
|
}
|
|
|
|
static __inline uint32 SumPixels_16(int iboxwidth, const uint32* src_ptr) {
|
|
uint32 sum = 0u;
|
|
int x;
|
|
assert(iboxwidth > 0);
|
|
for (x = 0; x < iboxwidth; ++x) {
|
|
sum += src_ptr[x];
|
|
}
|
|
return sum;
|
|
}
|
|
|
|
static void ScaleAddCols2_C(int dst_width,
|
|
int boxheight,
|
|
int x,
|
|
int dx,
|
|
const uint16* src_ptr,
|
|
uint8* dst_ptr) {
|
|
int i;
|
|
int scaletbl[2];
|
|
int minboxwidth = dx >> 16;
|
|
int boxwidth;
|
|
scaletbl[0] = 65536 / (MIN1(minboxwidth) * boxheight);
|
|
scaletbl[1] = 65536 / (MIN1(minboxwidth + 1) * boxheight);
|
|
for (i = 0; i < dst_width; ++i) {
|
|
int ix = x >> 16;
|
|
x += dx;
|
|
boxwidth = MIN1((x >> 16) - ix);
|
|
*dst_ptr++ =
|
|
SumPixels(boxwidth, src_ptr + ix) * scaletbl[boxwidth - minboxwidth] >>
|
|
16;
|
|
}
|
|
}
|
|
|
|
static void ScaleAddCols2_16_C(int dst_width,
|
|
int boxheight,
|
|
int x,
|
|
int dx,
|
|
const uint32* src_ptr,
|
|
uint16* dst_ptr) {
|
|
int i;
|
|
int scaletbl[2];
|
|
int minboxwidth = dx >> 16;
|
|
int boxwidth;
|
|
scaletbl[0] = 65536 / (MIN1(minboxwidth) * boxheight);
|
|
scaletbl[1] = 65536 / (MIN1(minboxwidth + 1) * boxheight);
|
|
for (i = 0; i < dst_width; ++i) {
|
|
int ix = x >> 16;
|
|
x += dx;
|
|
boxwidth = MIN1((x >> 16) - ix);
|
|
*dst_ptr++ = SumPixels_16(boxwidth, src_ptr + ix) *
|
|
scaletbl[boxwidth - minboxwidth] >>
|
|
16;
|
|
}
|
|
}
|
|
|
|
static void ScaleAddCols0_C(int dst_width,
|
|
int boxheight,
|
|
int x,
|
|
int dx,
|
|
const uint16* src_ptr,
|
|
uint8* dst_ptr) {
|
|
int scaleval = 65536 / boxheight;
|
|
int i;
|
|
(void)dx;
|
|
src_ptr += (x >> 16);
|
|
for (i = 0; i < dst_width; ++i) {
|
|
*dst_ptr++ = src_ptr[i] * scaleval >> 16;
|
|
}
|
|
}
|
|
|
|
static void ScaleAddCols1_C(int dst_width,
|
|
int boxheight,
|
|
int x,
|
|
int dx,
|
|
const uint16* src_ptr,
|
|
uint8* dst_ptr) {
|
|
int boxwidth = MIN1(dx >> 16);
|
|
int scaleval = 65536 / (boxwidth * boxheight);
|
|
int i;
|
|
x >>= 16;
|
|
for (i = 0; i < dst_width; ++i) {
|
|
*dst_ptr++ = SumPixels(boxwidth, src_ptr + x) * scaleval >> 16;
|
|
x += boxwidth;
|
|
}
|
|
}
|
|
|
|
static void ScaleAddCols1_16_C(int dst_width,
|
|
int boxheight,
|
|
int x,
|
|
int dx,
|
|
const uint32* src_ptr,
|
|
uint16* dst_ptr) {
|
|
int boxwidth = MIN1(dx >> 16);
|
|
int scaleval = 65536 / (boxwidth * boxheight);
|
|
int i;
|
|
for (i = 0; i < dst_width; ++i) {
|
|
*dst_ptr++ = SumPixels_16(boxwidth, src_ptr + x) * scaleval >> 16;
|
|
x += boxwidth;
|
|
}
|
|
}
|
|
|
|
// Scale plane down to any dimensions, with interpolation.
|
|
// (boxfilter).
|
|
//
|
|
// Same method as SimpleScale, which is fixed point, outputting
|
|
// one pixel of destination using fixed point (16.16) to step
|
|
// through source, sampling a box of pixel with simple
|
|
// averaging.
|
|
static void ScalePlaneBox(int src_width,
|
|
int src_height,
|
|
int dst_width,
|
|
int dst_height,
|
|
int src_stride,
|
|
int dst_stride,
|
|
const uint8* src_ptr,
|
|
uint8* dst_ptr) {
|
|
int j, k;
|
|
// Initial source x/y coordinate and step values as 16.16 fixed point.
|
|
int x = 0;
|
|
int y = 0;
|
|
int dx = 0;
|
|
int dy = 0;
|
|
const int max_y = (src_height << 16);
|
|
ScaleSlope(src_width, src_height, dst_width, dst_height, kFilterBox, &x, &y,
|
|
&dx, &dy);
|
|
src_width = Abs(src_width);
|
|
{
|
|
// Allocate a row buffer of uint16.
|
|
align_buffer_64(row16, src_width * 2);
|
|
void (*ScaleAddCols)(int dst_width, int boxheight, int x, int dx,
|
|
const uint16* src_ptr, uint8* dst_ptr) =
|
|
(dx & 0xffff) ? ScaleAddCols2_C
|
|
: ((dx != 0x10000) ? ScaleAddCols1_C : ScaleAddCols0_C);
|
|
void (*ScaleAddRow)(const uint8* src_ptr, uint16* dst_ptr, int src_width) =
|
|
ScaleAddRow_C;
|
|
#if defined(HAS_SCALEADDROW_SSE2)
|
|
if (TestCpuFlag(kCpuHasSSE2)) {
|
|
ScaleAddRow = ScaleAddRow_Any_SSE2;
|
|
if (IS_ALIGNED(src_width, 16)) {
|
|
ScaleAddRow = ScaleAddRow_SSE2;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_SCALEADDROW_AVX2)
|
|
if (TestCpuFlag(kCpuHasAVX2)) {
|
|
ScaleAddRow = ScaleAddRow_Any_AVX2;
|
|
if (IS_ALIGNED(src_width, 32)) {
|
|
ScaleAddRow = ScaleAddRow_AVX2;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_SCALEADDROW_NEON)
|
|
if (TestCpuFlag(kCpuHasNEON)) {
|
|
ScaleAddRow = ScaleAddRow_Any_NEON;
|
|
if (IS_ALIGNED(src_width, 16)) {
|
|
ScaleAddRow = ScaleAddRow_NEON;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_SCALEADDROW_MSA)
|
|
if (TestCpuFlag(kCpuHasMSA)) {
|
|
ScaleAddRow = ScaleAddRow_Any_MSA;
|
|
if (IS_ALIGNED(src_width, 16)) {
|
|
ScaleAddRow = ScaleAddRow_MSA;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_SCALEADDROW_DSPR2)
|
|
if (TestCpuFlag(kCpuHasDSPR2)) {
|
|
ScaleAddRow = ScaleAddRow_Any_DSPR2;
|
|
if (IS_ALIGNED(src_width, 16)) {
|
|
ScaleAddRow = ScaleAddRow_DSPR2;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
for (j = 0; j < dst_height; ++j) {
|
|
int boxheight;
|
|
int iy = y >> 16;
|
|
const uint8* src = src_ptr + iy * src_stride;
|
|
y += dy;
|
|
if (y > max_y) {
|
|
y = max_y;
|
|
}
|
|
boxheight = MIN1((y >> 16) - iy);
|
|
memset(row16, 0, src_width * 2);
|
|
for (k = 0; k < boxheight; ++k) {
|
|
ScaleAddRow(src, (uint16*)(row16), src_width);
|
|
src += src_stride;
|
|
}
|
|
ScaleAddCols(dst_width, boxheight, x, dx, (uint16*)(row16), dst_ptr);
|
|
dst_ptr += dst_stride;
|
|
}
|
|
free_aligned_buffer_64(row16);
|
|
}
|
|
}
|
|
|
|
static void ScalePlaneBox_16(int src_width,
|
|
int src_height,
|
|
int dst_width,
|
|
int dst_height,
|
|
int src_stride,
|
|
int dst_stride,
|
|
const uint16* src_ptr,
|
|
uint16* dst_ptr) {
|
|
int j, k;
|
|
// Initial source x/y coordinate and step values as 16.16 fixed point.
|
|
int x = 0;
|
|
int y = 0;
|
|
int dx = 0;
|
|
int dy = 0;
|
|
const int max_y = (src_height << 16);
|
|
ScaleSlope(src_width, src_height, dst_width, dst_height, kFilterBox, &x, &y,
|
|
&dx, &dy);
|
|
src_width = Abs(src_width);
|
|
{
|
|
// Allocate a row buffer of uint32.
|
|
align_buffer_64(row32, src_width * 4);
|
|
void (*ScaleAddCols)(int dst_width, int boxheight, int x, int dx,
|
|
const uint32* src_ptr, uint16* dst_ptr) =
|
|
(dx & 0xffff) ? ScaleAddCols2_16_C : ScaleAddCols1_16_C;
|
|
void (*ScaleAddRow)(const uint16* src_ptr, uint32* dst_ptr, int src_width) =
|
|
ScaleAddRow_16_C;
|
|
|
|
#if defined(HAS_SCALEADDROW_16_SSE2)
|
|
if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(src_width, 16)) {
|
|
ScaleAddRow = ScaleAddRow_16_SSE2;
|
|
}
|
|
#endif
|
|
|
|
for (j = 0; j < dst_height; ++j) {
|
|
int boxheight;
|
|
int iy = y >> 16;
|
|
const uint16* src = src_ptr + iy * src_stride;
|
|
y += dy;
|
|
if (y > max_y) {
|
|
y = max_y;
|
|
}
|
|
boxheight = MIN1((y >> 16) - iy);
|
|
memset(row32, 0, src_width * 4);
|
|
for (k = 0; k < boxheight; ++k) {
|
|
ScaleAddRow(src, (uint32*)(row32), src_width);
|
|
src += src_stride;
|
|
}
|
|
ScaleAddCols(dst_width, boxheight, x, dx, (uint32*)(row32), dst_ptr);
|
|
dst_ptr += dst_stride;
|
|
}
|
|
free_aligned_buffer_64(row32);
|
|
}
|
|
}
|
|
|
|
// Scale plane down with bilinear interpolation.
|
|
void ScalePlaneBilinearDown(int src_width,
|
|
int src_height,
|
|
int dst_width,
|
|
int dst_height,
|
|
int src_stride,
|
|
int dst_stride,
|
|
const uint8* src_ptr,
|
|
uint8* dst_ptr,
|
|
enum FilterMode filtering) {
|
|
// Initial source x/y coordinate and step values as 16.16 fixed point.
|
|
int x = 0;
|
|
int y = 0;
|
|
int dx = 0;
|
|
int dy = 0;
|
|
// TODO(fbarchard): Consider not allocating row buffer for kFilterLinear.
|
|
// Allocate a row buffer.
|
|
align_buffer_64(row, src_width);
|
|
|
|
const int max_y = (src_height - 1) << 16;
|
|
int j;
|
|
void (*ScaleFilterCols)(uint8 * dst_ptr, const uint8* src_ptr, int dst_width,
|
|
int x, int dx) =
|
|
(src_width >= 32768) ? ScaleFilterCols64_C : ScaleFilterCols_C;
|
|
void (*InterpolateRow)(uint8 * dst_ptr, const uint8* src_ptr,
|
|
ptrdiff_t src_stride, int dst_width,
|
|
int source_y_fraction) = InterpolateRow_C;
|
|
ScaleSlope(src_width, src_height, dst_width, dst_height, filtering, &x, &y,
|
|
&dx, &dy);
|
|
src_width = Abs(src_width);
|
|
|
|
#if defined(HAS_INTERPOLATEROW_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3)) {
|
|
InterpolateRow = InterpolateRow_Any_SSSE3;
|
|
if (IS_ALIGNED(src_width, 16)) {
|
|
InterpolateRow = InterpolateRow_SSSE3;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_INTERPOLATEROW_AVX2)
|
|
if (TestCpuFlag(kCpuHasAVX2)) {
|
|
InterpolateRow = InterpolateRow_Any_AVX2;
|
|
if (IS_ALIGNED(src_width, 32)) {
|
|
InterpolateRow = InterpolateRow_AVX2;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_INTERPOLATEROW_NEON)
|
|
if (TestCpuFlag(kCpuHasNEON)) {
|
|
InterpolateRow = InterpolateRow_Any_NEON;
|
|
if (IS_ALIGNED(src_width, 16)) {
|
|
InterpolateRow = InterpolateRow_NEON;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_INTERPOLATEROW_DSPR2)
|
|
if (TestCpuFlag(kCpuHasDSPR2)) {
|
|
InterpolateRow = InterpolateRow_Any_DSPR2;
|
|
if (IS_ALIGNED(src_width, 4)) {
|
|
InterpolateRow = InterpolateRow_DSPR2;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_INTERPOLATEROW_MSA)
|
|
if (TestCpuFlag(kCpuHasMSA)) {
|
|
InterpolateRow = InterpolateRow_Any_MSA;
|
|
if (IS_ALIGNED(src_width, 32)) {
|
|
InterpolateRow = InterpolateRow_MSA;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if defined(HAS_SCALEFILTERCOLS_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3) && src_width < 32768) {
|
|
ScaleFilterCols = ScaleFilterCols_SSSE3;
|
|
}
|
|
#endif
|
|
#if defined(HAS_SCALEFILTERCOLS_NEON)
|
|
if (TestCpuFlag(kCpuHasNEON) && src_width < 32768) {
|
|
ScaleFilterCols = ScaleFilterCols_Any_NEON;
|
|
if (IS_ALIGNED(dst_width, 8)) {
|
|
ScaleFilterCols = ScaleFilterCols_NEON;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_SCALEFILTERCOLS_MSA)
|
|
if (TestCpuFlag(kCpuHasMSA) && src_width < 32768) {
|
|
ScaleFilterCols = ScaleFilterCols_Any_MSA;
|
|
if (IS_ALIGNED(dst_width, 16)) {
|
|
ScaleFilterCols = ScaleFilterCols_MSA;
|
|
}
|
|
}
|
|
#endif
|
|
if (y > max_y) {
|
|
y = max_y;
|
|
}
|
|
|
|
for (j = 0; j < dst_height; ++j) {
|
|
int yi = y >> 16;
|
|
const uint8* src = src_ptr + yi * src_stride;
|
|
if (filtering == kFilterLinear) {
|
|
ScaleFilterCols(dst_ptr, src, dst_width, x, dx);
|
|
} else {
|
|
int yf = (y >> 8) & 255;
|
|
InterpolateRow(row, src, src_stride, src_width, yf);
|
|
ScaleFilterCols(dst_ptr, row, dst_width, x, dx);
|
|
}
|
|
dst_ptr += dst_stride;
|
|
y += dy;
|
|
if (y > max_y) {
|
|
y = max_y;
|
|
}
|
|
}
|
|
free_aligned_buffer_64(row);
|
|
}
|
|
|
|
void ScalePlaneBilinearDown_16(int src_width,
|
|
int src_height,
|
|
int dst_width,
|
|
int dst_height,
|
|
int src_stride,
|
|
int dst_stride,
|
|
const uint16* src_ptr,
|
|
uint16* dst_ptr,
|
|
enum FilterMode filtering) {
|
|
// Initial source x/y coordinate and step values as 16.16 fixed point.
|
|
int x = 0;
|
|
int y = 0;
|
|
int dx = 0;
|
|
int dy = 0;
|
|
// TODO(fbarchard): Consider not allocating row buffer for kFilterLinear.
|
|
// Allocate a row buffer.
|
|
align_buffer_64(row, src_width * 2);
|
|
|
|
const int max_y = (src_height - 1) << 16;
|
|
int j;
|
|
void (*ScaleFilterCols)(uint16 * dst_ptr, const uint16* src_ptr,
|
|
int dst_width, int x, int dx) =
|
|
(src_width >= 32768) ? ScaleFilterCols64_16_C : ScaleFilterCols_16_C;
|
|
void (*InterpolateRow)(uint16 * dst_ptr, const uint16* src_ptr,
|
|
ptrdiff_t src_stride, int dst_width,
|
|
int source_y_fraction) = InterpolateRow_16_C;
|
|
ScaleSlope(src_width, src_height, dst_width, dst_height, filtering, &x, &y,
|
|
&dx, &dy);
|
|
src_width = Abs(src_width);
|
|
|
|
#if defined(HAS_INTERPOLATEROW_16_SSE2)
|
|
if (TestCpuFlag(kCpuHasSSE2)) {
|
|
InterpolateRow = InterpolateRow_Any_16_SSE2;
|
|
if (IS_ALIGNED(src_width, 16)) {
|
|
InterpolateRow = InterpolateRow_16_SSE2;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_INTERPOLATEROW_16_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3)) {
|
|
InterpolateRow = InterpolateRow_Any_16_SSSE3;
|
|
if (IS_ALIGNED(src_width, 16)) {
|
|
InterpolateRow = InterpolateRow_16_SSSE3;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_INTERPOLATEROW_16_AVX2)
|
|
if (TestCpuFlag(kCpuHasAVX2)) {
|
|
InterpolateRow = InterpolateRow_Any_16_AVX2;
|
|
if (IS_ALIGNED(src_width, 32)) {
|
|
InterpolateRow = InterpolateRow_16_AVX2;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_INTERPOLATEROW_16_NEON)
|
|
if (TestCpuFlag(kCpuHasNEON)) {
|
|
InterpolateRow = InterpolateRow_Any_16_NEON;
|
|
if (IS_ALIGNED(src_width, 16)) {
|
|
InterpolateRow = InterpolateRow_16_NEON;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_INTERPOLATEROW_16_DSPR2)
|
|
if (TestCpuFlag(kCpuHasDSPR2)) {
|
|
InterpolateRow = InterpolateRow_Any_16_DSPR2;
|
|
if (IS_ALIGNED(src_width, 4)) {
|
|
InterpolateRow = InterpolateRow_16_DSPR2;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if defined(HAS_SCALEFILTERCOLS_16_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3) && src_width < 32768) {
|
|
ScaleFilterCols = ScaleFilterCols_16_SSSE3;
|
|
}
|
|
#endif
|
|
if (y > max_y) {
|
|
y = max_y;
|
|
}
|
|
|
|
for (j = 0; j < dst_height; ++j) {
|
|
int yi = y >> 16;
|
|
const uint16* src = src_ptr + yi * src_stride;
|
|
if (filtering == kFilterLinear) {
|
|
ScaleFilterCols(dst_ptr, src, dst_width, x, dx);
|
|
} else {
|
|
int yf = (y >> 8) & 255;
|
|
InterpolateRow((uint16*)row, src, src_stride, src_width, yf);
|
|
ScaleFilterCols(dst_ptr, (uint16*)row, dst_width, x, dx);
|
|
}
|
|
dst_ptr += dst_stride;
|
|
y += dy;
|
|
if (y > max_y) {
|
|
y = max_y;
|
|
}
|
|
}
|
|
free_aligned_buffer_64(row);
|
|
}
|
|
|
|
// Scale up down with bilinear interpolation.
|
|
void ScalePlaneBilinearUp(int src_width,
|
|
int src_height,
|
|
int dst_width,
|
|
int dst_height,
|
|
int src_stride,
|
|
int dst_stride,
|
|
const uint8* src_ptr,
|
|
uint8* dst_ptr,
|
|
enum FilterMode filtering) {
|
|
int j;
|
|
// Initial source x/y coordinate and step values as 16.16 fixed point.
|
|
int x = 0;
|
|
int y = 0;
|
|
int dx = 0;
|
|
int dy = 0;
|
|
const int max_y = (src_height - 1) << 16;
|
|
void (*InterpolateRow)(uint8 * dst_ptr, const uint8* src_ptr,
|
|
ptrdiff_t src_stride, int dst_width,
|
|
int source_y_fraction) = InterpolateRow_C;
|
|
void (*ScaleFilterCols)(uint8 * dst_ptr, const uint8* src_ptr, int dst_width,
|
|
int x, int dx) =
|
|
filtering ? ScaleFilterCols_C : ScaleCols_C;
|
|
ScaleSlope(src_width, src_height, dst_width, dst_height, filtering, &x, &y,
|
|
&dx, &dy);
|
|
src_width = Abs(src_width);
|
|
|
|
#if defined(HAS_INTERPOLATEROW_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3)) {
|
|
InterpolateRow = InterpolateRow_Any_SSSE3;
|
|
if (IS_ALIGNED(dst_width, 16)) {
|
|
InterpolateRow = InterpolateRow_SSSE3;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_INTERPOLATEROW_AVX2)
|
|
if (TestCpuFlag(kCpuHasAVX2)) {
|
|
InterpolateRow = InterpolateRow_Any_AVX2;
|
|
if (IS_ALIGNED(dst_width, 32)) {
|
|
InterpolateRow = InterpolateRow_AVX2;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_INTERPOLATEROW_NEON)
|
|
if (TestCpuFlag(kCpuHasNEON)) {
|
|
InterpolateRow = InterpolateRow_Any_NEON;
|
|
if (IS_ALIGNED(dst_width, 16)) {
|
|
InterpolateRow = InterpolateRow_NEON;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_INTERPOLATEROW_DSPR2)
|
|
if (TestCpuFlag(kCpuHasDSPR2)) {
|
|
InterpolateRow = InterpolateRow_Any_DSPR2;
|
|
if (IS_ALIGNED(dst_width, 4)) {
|
|
InterpolateRow = InterpolateRow_DSPR2;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (filtering && src_width >= 32768) {
|
|
ScaleFilterCols = ScaleFilterCols64_C;
|
|
}
|
|
#if defined(HAS_SCALEFILTERCOLS_SSSE3)
|
|
if (filtering && TestCpuFlag(kCpuHasSSSE3) && src_width < 32768) {
|
|
ScaleFilterCols = ScaleFilterCols_SSSE3;
|
|
}
|
|
#endif
|
|
#if defined(HAS_SCALEFILTERCOLS_NEON)
|
|
if (filtering && TestCpuFlag(kCpuHasNEON) && src_width < 32768) {
|
|
ScaleFilterCols = ScaleFilterCols_Any_NEON;
|
|
if (IS_ALIGNED(dst_width, 8)) {
|
|
ScaleFilterCols = ScaleFilterCols_NEON;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_SCALEFILTERCOLS_MSA)
|
|
if (filtering && TestCpuFlag(kCpuHasMSA) && src_width < 32768) {
|
|
ScaleFilterCols = ScaleFilterCols_Any_MSA;
|
|
if (IS_ALIGNED(dst_width, 16)) {
|
|
ScaleFilterCols = ScaleFilterCols_MSA;
|
|
}
|
|
}
|
|
#endif
|
|
if (!filtering && src_width * 2 == dst_width && x < 0x8000) {
|
|
ScaleFilterCols = ScaleColsUp2_C;
|
|
#if defined(HAS_SCALECOLS_SSE2)
|
|
if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(dst_width, 8)) {
|
|
ScaleFilterCols = ScaleColsUp2_SSE2;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
if (y > max_y) {
|
|
y = max_y;
|
|
}
|
|
{
|
|
int yi = y >> 16;
|
|
const uint8* src = src_ptr + yi * src_stride;
|
|
|
|
// Allocate 2 row buffers.
|
|
const int kRowSize = (dst_width + 31) & ~31;
|
|
align_buffer_64(row, kRowSize * 2);
|
|
|
|
uint8* rowptr = row;
|
|
int rowstride = kRowSize;
|
|
int lasty = yi;
|
|
|
|
ScaleFilterCols(rowptr, src, dst_width, x, dx);
|
|
if (src_height > 1) {
|
|
src += src_stride;
|
|
}
|
|
ScaleFilterCols(rowptr + rowstride, src, dst_width, x, dx);
|
|
src += src_stride;
|
|
|
|
for (j = 0; j < dst_height; ++j) {
|
|
yi = y >> 16;
|
|
if (yi != lasty) {
|
|
if (y > max_y) {
|
|
y = max_y;
|
|
yi = y >> 16;
|
|
src = src_ptr + yi * src_stride;
|
|
}
|
|
if (yi != lasty) {
|
|
ScaleFilterCols(rowptr, src, dst_width, x, dx);
|
|
rowptr += rowstride;
|
|
rowstride = -rowstride;
|
|
lasty = yi;
|
|
src += src_stride;
|
|
}
|
|
}
|
|
if (filtering == kFilterLinear) {
|
|
InterpolateRow(dst_ptr, rowptr, 0, dst_width, 0);
|
|
} else {
|
|
int yf = (y >> 8) & 255;
|
|
InterpolateRow(dst_ptr, rowptr, rowstride, dst_width, yf);
|
|
}
|
|
dst_ptr += dst_stride;
|
|
y += dy;
|
|
}
|
|
free_aligned_buffer_64(row);
|
|
}
|
|
}
|
|
|
|
void ScalePlaneBilinearUp_16(int src_width,
|
|
int src_height,
|
|
int dst_width,
|
|
int dst_height,
|
|
int src_stride,
|
|
int dst_stride,
|
|
const uint16* src_ptr,
|
|
uint16* dst_ptr,
|
|
enum FilterMode filtering) {
|
|
int j;
|
|
// Initial source x/y coordinate and step values as 16.16 fixed point.
|
|
int x = 0;
|
|
int y = 0;
|
|
int dx = 0;
|
|
int dy = 0;
|
|
const int max_y = (src_height - 1) << 16;
|
|
void (*InterpolateRow)(uint16 * dst_ptr, const uint16* src_ptr,
|
|
ptrdiff_t src_stride, int dst_width,
|
|
int source_y_fraction) = InterpolateRow_16_C;
|
|
void (*ScaleFilterCols)(uint16 * dst_ptr, const uint16* src_ptr,
|
|
int dst_width, int x, int dx) =
|
|
filtering ? ScaleFilterCols_16_C : ScaleCols_16_C;
|
|
ScaleSlope(src_width, src_height, dst_width, dst_height, filtering, &x, &y,
|
|
&dx, &dy);
|
|
src_width = Abs(src_width);
|
|
|
|
#if defined(HAS_INTERPOLATEROW_16_SSE2)
|
|
if (TestCpuFlag(kCpuHasSSE2)) {
|
|
InterpolateRow = InterpolateRow_Any_16_SSE2;
|
|
if (IS_ALIGNED(dst_width, 16)) {
|
|
InterpolateRow = InterpolateRow_16_SSE2;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_INTERPOLATEROW_16_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3)) {
|
|
InterpolateRow = InterpolateRow_Any_16_SSSE3;
|
|
if (IS_ALIGNED(dst_width, 16)) {
|
|
InterpolateRow = InterpolateRow_16_SSSE3;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_INTERPOLATEROW_16_AVX2)
|
|
if (TestCpuFlag(kCpuHasAVX2)) {
|
|
InterpolateRow = InterpolateRow_Any_16_AVX2;
|
|
if (IS_ALIGNED(dst_width, 32)) {
|
|
InterpolateRow = InterpolateRow_16_AVX2;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_INTERPOLATEROW_16_NEON)
|
|
if (TestCpuFlag(kCpuHasNEON)) {
|
|
InterpolateRow = InterpolateRow_Any_16_NEON;
|
|
if (IS_ALIGNED(dst_width, 16)) {
|
|
InterpolateRow = InterpolateRow_16_NEON;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_INTERPOLATEROW_16_DSPR2)
|
|
if (TestCpuFlag(kCpuHasDSPR2)) {
|
|
InterpolateRow = InterpolateRow_Any_16_DSPR2;
|
|
if (IS_ALIGNED(dst_width, 4)) {
|
|
InterpolateRow = InterpolateRow_16_DSPR2;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (filtering && src_width >= 32768) {
|
|
ScaleFilterCols = ScaleFilterCols64_16_C;
|
|
}
|
|
#if defined(HAS_SCALEFILTERCOLS_16_SSSE3)
|
|
if (filtering && TestCpuFlag(kCpuHasSSSE3) && src_width < 32768) {
|
|
ScaleFilterCols = ScaleFilterCols_16_SSSE3;
|
|
}
|
|
#endif
|
|
if (!filtering && src_width * 2 == dst_width && x < 0x8000) {
|
|
ScaleFilterCols = ScaleColsUp2_16_C;
|
|
#if defined(HAS_SCALECOLS_16_SSE2)
|
|
if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(dst_width, 8)) {
|
|
ScaleFilterCols = ScaleColsUp2_16_SSE2;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
if (y > max_y) {
|
|
y = max_y;
|
|
}
|
|
{
|
|
int yi = y >> 16;
|
|
const uint16* src = src_ptr + yi * src_stride;
|
|
|
|
// Allocate 2 row buffers.
|
|
const int kRowSize = (dst_width + 31) & ~31;
|
|
align_buffer_64(row, kRowSize * 4);
|
|
|
|
uint16* rowptr = (uint16*)row;
|
|
int rowstride = kRowSize;
|
|
int lasty = yi;
|
|
|
|
ScaleFilterCols(rowptr, src, dst_width, x, dx);
|
|
if (src_height > 1) {
|
|
src += src_stride;
|
|
}
|
|
ScaleFilterCols(rowptr + rowstride, src, dst_width, x, dx);
|
|
src += src_stride;
|
|
|
|
for (j = 0; j < dst_height; ++j) {
|
|
yi = y >> 16;
|
|
if (yi != lasty) {
|
|
if (y > max_y) {
|
|
y = max_y;
|
|
yi = y >> 16;
|
|
src = src_ptr + yi * src_stride;
|
|
}
|
|
if (yi != lasty) {
|
|
ScaleFilterCols(rowptr, src, dst_width, x, dx);
|
|
rowptr += rowstride;
|
|
rowstride = -rowstride;
|
|
lasty = yi;
|
|
src += src_stride;
|
|
}
|
|
}
|
|
if (filtering == kFilterLinear) {
|
|
InterpolateRow(dst_ptr, rowptr, 0, dst_width, 0);
|
|
} else {
|
|
int yf = (y >> 8) & 255;
|
|
InterpolateRow(dst_ptr, rowptr, rowstride, dst_width, yf);
|
|
}
|
|
dst_ptr += dst_stride;
|
|
y += dy;
|
|
}
|
|
free_aligned_buffer_64(row);
|
|
}
|
|
}
|
|
|
|
// Scale Plane to/from any dimensions, without interpolation.
|
|
// Fixed point math is used for performance: The upper 16 bits
|
|
// of x and dx is the integer part of the source position and
|
|
// the lower 16 bits are the fixed decimal part.
|
|
|
|
static void ScalePlaneSimple(int src_width,
|
|
int src_height,
|
|
int dst_width,
|
|
int dst_height,
|
|
int src_stride,
|
|
int dst_stride,
|
|
const uint8* src_ptr,
|
|
uint8* dst_ptr) {
|
|
int i;
|
|
void (*ScaleCols)(uint8 * dst_ptr, const uint8* src_ptr, int dst_width, int x,
|
|
int dx) = ScaleCols_C;
|
|
// Initial source x/y coordinate and step values as 16.16 fixed point.
|
|
int x = 0;
|
|
int y = 0;
|
|
int dx = 0;
|
|
int dy = 0;
|
|
ScaleSlope(src_width, src_height, dst_width, dst_height, kFilterNone, &x, &y,
|
|
&dx, &dy);
|
|
src_width = Abs(src_width);
|
|
|
|
if (src_width * 2 == dst_width && x < 0x8000) {
|
|
ScaleCols = ScaleColsUp2_C;
|
|
#if defined(HAS_SCALECOLS_SSE2)
|
|
if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(dst_width, 8)) {
|
|
ScaleCols = ScaleColsUp2_SSE2;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
for (i = 0; i < dst_height; ++i) {
|
|
ScaleCols(dst_ptr, src_ptr + (y >> 16) * src_stride, dst_width, x, dx);
|
|
dst_ptr += dst_stride;
|
|
y += dy;
|
|
}
|
|
}
|
|
|
|
static void ScalePlaneSimple_16(int src_width,
|
|
int src_height,
|
|
int dst_width,
|
|
int dst_height,
|
|
int src_stride,
|
|
int dst_stride,
|
|
const uint16* src_ptr,
|
|
uint16* dst_ptr) {
|
|
int i;
|
|
void (*ScaleCols)(uint16 * dst_ptr, const uint16* src_ptr, int dst_width,
|
|
int x, int dx) = ScaleCols_16_C;
|
|
// Initial source x/y coordinate and step values as 16.16 fixed point.
|
|
int x = 0;
|
|
int y = 0;
|
|
int dx = 0;
|
|
int dy = 0;
|
|
ScaleSlope(src_width, src_height, dst_width, dst_height, kFilterNone, &x, &y,
|
|
&dx, &dy);
|
|
src_width = Abs(src_width);
|
|
|
|
if (src_width * 2 == dst_width && x < 0x8000) {
|
|
ScaleCols = ScaleColsUp2_16_C;
|
|
#if defined(HAS_SCALECOLS_16_SSE2)
|
|
if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(dst_width, 8)) {
|
|
ScaleCols = ScaleColsUp2_16_SSE2;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
for (i = 0; i < dst_height; ++i) {
|
|
ScaleCols(dst_ptr, src_ptr + (y >> 16) * src_stride, dst_width, x, dx);
|
|
dst_ptr += dst_stride;
|
|
y += dy;
|
|
}
|
|
}
|
|
|
|
// Scale a plane.
|
|
// This function dispatches to a specialized scaler based on scale factor.
|
|
|
|
LIBYUV_API
|
|
void ScalePlane(const uint8* src,
|
|
int src_stride,
|
|
int src_width,
|
|
int src_height,
|
|
uint8* dst,
|
|
int dst_stride,
|
|
int dst_width,
|
|
int dst_height,
|
|
enum FilterMode filtering) {
|
|
// Simplify filtering when possible.
|
|
filtering = ScaleFilterReduce(src_width, src_height, dst_width, dst_height,
|
|
filtering);
|
|
|
|
// Negative height means invert the image.
|
|
if (src_height < 0) {
|
|
src_height = -src_height;
|
|
src = src + (src_height - 1) * src_stride;
|
|
src_stride = -src_stride;
|
|
}
|
|
|
|
// Use specialized scales to improve performance for common resolutions.
|
|
// For example, all the 1/2 scalings will use ScalePlaneDown2()
|
|
if (dst_width == src_width && dst_height == src_height) {
|
|
// Straight copy.
|
|
CopyPlane(src, src_stride, dst, dst_stride, dst_width, dst_height);
|
|
return;
|
|
}
|
|
if (dst_width == src_width && filtering != kFilterBox) {
|
|
int dy = FixedDiv(src_height, dst_height);
|
|
// Arbitrary scale vertically, but unscaled horizontally.
|
|
ScalePlaneVertical(src_height, dst_width, dst_height, src_stride,
|
|
dst_stride, src, dst, 0, 0, dy, 1, filtering);
|
|
return;
|
|
}
|
|
if (dst_width <= Abs(src_width) && dst_height <= src_height) {
|
|
// Scale down.
|
|
if (4 * dst_width == 3 * src_width && 4 * dst_height == 3 * src_height) {
|
|
// optimized, 3/4
|
|
ScalePlaneDown34(src_width, src_height, dst_width, dst_height, src_stride,
|
|
dst_stride, src, dst, filtering);
|
|
return;
|
|
}
|
|
if (2 * dst_width == src_width && 2 * dst_height == src_height) {
|
|
// optimized, 1/2
|
|
ScalePlaneDown2(src_width, src_height, dst_width, dst_height, src_stride,
|
|
dst_stride, src, dst, filtering);
|
|
return;
|
|
}
|
|
// 3/8 rounded up for odd sized chroma height.
|
|
if (8 * dst_width == 3 * src_width && 8 * dst_height == 3 * src_height) {
|
|
// optimized, 3/8
|
|
ScalePlaneDown38(src_width, src_height, dst_width, dst_height, src_stride,
|
|
dst_stride, src, dst, filtering);
|
|
return;
|
|
}
|
|
if (4 * dst_width == src_width && 4 * dst_height == src_height &&
|
|
(filtering == kFilterBox || filtering == kFilterNone)) {
|
|
// optimized, 1/4
|
|
ScalePlaneDown4(src_width, src_height, dst_width, dst_height, src_stride,
|
|
dst_stride, src, dst, filtering);
|
|
return;
|
|
}
|
|
}
|
|
if (filtering == kFilterBox && dst_height * 2 < src_height) {
|
|
ScalePlaneBox(src_width, src_height, dst_width, dst_height, src_stride,
|
|
dst_stride, src, dst);
|
|
return;
|
|
}
|
|
if (filtering && dst_height > src_height) {
|
|
ScalePlaneBilinearUp(src_width, src_height, dst_width, dst_height,
|
|
src_stride, dst_stride, src, dst, filtering);
|
|
return;
|
|
}
|
|
if (filtering) {
|
|
ScalePlaneBilinearDown(src_width, src_height, dst_width, dst_height,
|
|
src_stride, dst_stride, src, dst, filtering);
|
|
return;
|
|
}
|
|
ScalePlaneSimple(src_width, src_height, dst_width, dst_height, src_stride,
|
|
dst_stride, src, dst);
|
|
}
|
|
|
|
LIBYUV_API
|
|
void ScalePlane_16(const uint16* src,
|
|
int src_stride,
|
|
int src_width,
|
|
int src_height,
|
|
uint16* dst,
|
|
int dst_stride,
|
|
int dst_width,
|
|
int dst_height,
|
|
enum FilterMode filtering) {
|
|
// Simplify filtering when possible.
|
|
filtering = ScaleFilterReduce(src_width, src_height, dst_width, dst_height,
|
|
filtering);
|
|
|
|
// Negative height means invert the image.
|
|
if (src_height < 0) {
|
|
src_height = -src_height;
|
|
src = src + (src_height - 1) * src_stride;
|
|
src_stride = -src_stride;
|
|
}
|
|
|
|
// Use specialized scales to improve performance for common resolutions.
|
|
// For example, all the 1/2 scalings will use ScalePlaneDown2()
|
|
if (dst_width == src_width && dst_height == src_height) {
|
|
// Straight copy.
|
|
CopyPlane_16(src, src_stride, dst, dst_stride, dst_width, dst_height);
|
|
return;
|
|
}
|
|
if (dst_width == src_width && filtering != kFilterBox) {
|
|
int dy = FixedDiv(src_height, dst_height);
|
|
// Arbitrary scale vertically, but unscaled vertically.
|
|
ScalePlaneVertical_16(src_height, dst_width, dst_height, src_stride,
|
|
dst_stride, src, dst, 0, 0, dy, 1, filtering);
|
|
return;
|
|
}
|
|
if (dst_width <= Abs(src_width) && dst_height <= src_height) {
|
|
// Scale down.
|
|
if (4 * dst_width == 3 * src_width && 4 * dst_height == 3 * src_height) {
|
|
// optimized, 3/4
|
|
ScalePlaneDown34_16(src_width, src_height, dst_width, dst_height,
|
|
src_stride, dst_stride, src, dst, filtering);
|
|
return;
|
|
}
|
|
if (2 * dst_width == src_width && 2 * dst_height == src_height) {
|
|
// optimized, 1/2
|
|
ScalePlaneDown2_16(src_width, src_height, dst_width, dst_height,
|
|
src_stride, dst_stride, src, dst, filtering);
|
|
return;
|
|
}
|
|
// 3/8 rounded up for odd sized chroma height.
|
|
if (8 * dst_width == 3 * src_width && 8 * dst_height == 3 * src_height) {
|
|
// optimized, 3/8
|
|
ScalePlaneDown38_16(src_width, src_height, dst_width, dst_height,
|
|
src_stride, dst_stride, src, dst, filtering);
|
|
return;
|
|
}
|
|
if (4 * dst_width == src_width && 4 * dst_height == src_height &&
|
|
(filtering == kFilterBox || filtering == kFilterNone)) {
|
|
// optimized, 1/4
|
|
ScalePlaneDown4_16(src_width, src_height, dst_width, dst_height,
|
|
src_stride, dst_stride, src, dst, filtering);
|
|
return;
|
|
}
|
|
}
|
|
if (filtering == kFilterBox && dst_height * 2 < src_height) {
|
|
ScalePlaneBox_16(src_width, src_height, dst_width, dst_height, src_stride,
|
|
dst_stride, src, dst);
|
|
return;
|
|
}
|
|
if (filtering && dst_height > src_height) {
|
|
ScalePlaneBilinearUp_16(src_width, src_height, dst_width, dst_height,
|
|
src_stride, dst_stride, src, dst, filtering);
|
|
return;
|
|
}
|
|
if (filtering) {
|
|
ScalePlaneBilinearDown_16(src_width, src_height, dst_width, dst_height,
|
|
src_stride, dst_stride, src, dst, filtering);
|
|
return;
|
|
}
|
|
ScalePlaneSimple_16(src_width, src_height, dst_width, dst_height, src_stride,
|
|
dst_stride, src, dst);
|
|
}
|
|
|
|
// Scale an I420 image.
|
|
// This function in turn calls a scaling function for each plane.
|
|
|
|
LIBYUV_API
|
|
int I420Scale(const uint8* src_y,
|
|
int src_stride_y,
|
|
const uint8* src_u,
|
|
int src_stride_u,
|
|
const uint8* src_v,
|
|
int src_stride_v,
|
|
int src_width,
|
|
int src_height,
|
|
uint8* dst_y,
|
|
int dst_stride_y,
|
|
uint8* dst_u,
|
|
int dst_stride_u,
|
|
uint8* dst_v,
|
|
int dst_stride_v,
|
|
int dst_width,
|
|
int dst_height,
|
|
enum FilterMode filtering) {
|
|
int src_halfwidth = SUBSAMPLE(src_width, 1, 1);
|
|
int src_halfheight = SUBSAMPLE(src_height, 1, 1);
|
|
int dst_halfwidth = SUBSAMPLE(dst_width, 1, 1);
|
|
int dst_halfheight = SUBSAMPLE(dst_height, 1, 1);
|
|
if (!src_y || !src_u || !src_v || src_width == 0 || src_height == 0 ||
|
|
src_width > 32768 || src_height > 32768 || !dst_y || !dst_u || !dst_v ||
|
|
dst_width <= 0 || dst_height <= 0) {
|
|
return -1;
|
|
}
|
|
|
|
ScalePlane(src_y, src_stride_y, src_width, src_height, dst_y, dst_stride_y,
|
|
dst_width, dst_height, filtering);
|
|
ScalePlane(src_u, src_stride_u, src_halfwidth, src_halfheight, dst_u,
|
|
dst_stride_u, dst_halfwidth, dst_halfheight, filtering);
|
|
ScalePlane(src_v, src_stride_v, src_halfwidth, src_halfheight, dst_v,
|
|
dst_stride_v, dst_halfwidth, dst_halfheight, filtering);
|
|
return 0;
|
|
}
|
|
|
|
LIBYUV_API
|
|
int I420Scale_16(const uint16* src_y,
|
|
int src_stride_y,
|
|
const uint16* src_u,
|
|
int src_stride_u,
|
|
const uint16* src_v,
|
|
int src_stride_v,
|
|
int src_width,
|
|
int src_height,
|
|
uint16* dst_y,
|
|
int dst_stride_y,
|
|
uint16* dst_u,
|
|
int dst_stride_u,
|
|
uint16* dst_v,
|
|
int dst_stride_v,
|
|
int dst_width,
|
|
int dst_height,
|
|
enum FilterMode filtering) {
|
|
int src_halfwidth = SUBSAMPLE(src_width, 1, 1);
|
|
int src_halfheight = SUBSAMPLE(src_height, 1, 1);
|
|
int dst_halfwidth = SUBSAMPLE(dst_width, 1, 1);
|
|
int dst_halfheight = SUBSAMPLE(dst_height, 1, 1);
|
|
if (!src_y || !src_u || !src_v || src_width == 0 || src_height == 0 ||
|
|
src_width > 32768 || src_height > 32768 || !dst_y || !dst_u || !dst_v ||
|
|
dst_width <= 0 || dst_height <= 0) {
|
|
return -1;
|
|
}
|
|
|
|
ScalePlane_16(src_y, src_stride_y, src_width, src_height, dst_y, dst_stride_y,
|
|
dst_width, dst_height, filtering);
|
|
ScalePlane_16(src_u, src_stride_u, src_halfwidth, src_halfheight, dst_u,
|
|
dst_stride_u, dst_halfwidth, dst_halfheight, filtering);
|
|
ScalePlane_16(src_v, src_stride_v, src_halfwidth, src_halfheight, dst_v,
|
|
dst_stride_v, dst_halfwidth, dst_halfheight, filtering);
|
|
return 0;
|
|
}
|
|
|
|
// Deprecated api
|
|
LIBYUV_API
|
|
int Scale(const uint8* src_y,
|
|
const uint8* src_u,
|
|
const uint8* src_v,
|
|
int src_stride_y,
|
|
int src_stride_u,
|
|
int src_stride_v,
|
|
int src_width,
|
|
int src_height,
|
|
uint8* dst_y,
|
|
uint8* dst_u,
|
|
uint8* dst_v,
|
|
int dst_stride_y,
|
|
int dst_stride_u,
|
|
int dst_stride_v,
|
|
int dst_width,
|
|
int dst_height,
|
|
LIBYUV_BOOL interpolate) {
|
|
return I420Scale(src_y, src_stride_y, src_u, src_stride_u, src_v,
|
|
src_stride_v, src_width, src_height, dst_y, dst_stride_y,
|
|
dst_u, dst_stride_u, dst_v, dst_stride_v, dst_width,
|
|
dst_height, interpolate ? kFilterBox : kFilterNone);
|
|
}
|
|
|
|
// Deprecated api
|
|
LIBYUV_API
|
|
int ScaleOffset(const uint8* src,
|
|
int src_width,
|
|
int src_height,
|
|
uint8* dst,
|
|
int dst_width,
|
|
int dst_height,
|
|
int dst_yoffset,
|
|
LIBYUV_BOOL interpolate) {
|
|
// Chroma requires offset to multiple of 2.
|
|
int dst_yoffset_even = dst_yoffset & ~1;
|
|
int src_halfwidth = SUBSAMPLE(src_width, 1, 1);
|
|
int src_halfheight = SUBSAMPLE(src_height, 1, 1);
|
|
int dst_halfwidth = SUBSAMPLE(dst_width, 1, 1);
|
|
int dst_halfheight = SUBSAMPLE(dst_height, 1, 1);
|
|
int aheight = dst_height - dst_yoffset_even * 2; // actual output height
|
|
const uint8* src_y = src;
|
|
const uint8* src_u = src + src_width * src_height;
|
|
const uint8* src_v =
|
|
src + src_width * src_height + src_halfwidth * src_halfheight;
|
|
uint8* dst_y = dst + dst_yoffset_even * dst_width;
|
|
uint8* dst_u =
|
|
dst + dst_width * dst_height + (dst_yoffset_even >> 1) * dst_halfwidth;
|
|
uint8* dst_v = dst + dst_width * dst_height + dst_halfwidth * dst_halfheight +
|
|
(dst_yoffset_even >> 1) * dst_halfwidth;
|
|
if (!src || src_width <= 0 || src_height <= 0 || !dst || dst_width <= 0 ||
|
|
dst_height <= 0 || dst_yoffset_even < 0 ||
|
|
dst_yoffset_even >= dst_height) {
|
|
return -1;
|
|
}
|
|
return I420Scale(src_y, src_width, src_u, src_halfwidth, src_v, src_halfwidth,
|
|
src_width, src_height, dst_y, dst_width, dst_u,
|
|
dst_halfwidth, dst_v, dst_halfwidth, dst_width, aheight,
|
|
interpolate ? kFilterBox : kFilterNone);
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
} // extern "C"
|
|
} // namespace libyuv
|
|
#endif
|