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https://chromium.googlesource.com/libyuv/libyuv
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49bbc1b4f3
BUG=260 TEST=unittests build/run R=ryanpetrie@google.com Review URL: https://webrtc-codereview.appspot.com/2123004 git-svn-id: http://libyuv.googlecode.com/svn/trunk@773 16f28f9a-4ce2-e073-06de-1de4eb20be90
101 lines
3.3 KiB
C++
101 lines
3.3 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 CopyARGB
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#include "libyuv/row.h"
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#include "../source/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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// Scale ARGB vertically with bilinear interpolation.
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void ScaleARGBBilinearVertical(int src_height,
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int dst_width, int dst_height,
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int src_stride, int dst_stride,
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const uint8* src_argb, uint8* dst_argb,
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int x, int y, int dy,
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int bpp, FilterMode filtering) {
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int dst_widthx4 = dst_width * bpp;
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src_argb += (x >> 16) * bpp;
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assert(src_height > 0);
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assert(dst_width > 0);
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assert(dst_height > 0);
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void (*InterpolateRow)(uint8* dst_argb, const uint8* src_argb,
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ptrdiff_t src_stride, int dst_width, int source_y_fraction) =
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InterpolateRow_C;
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#if defined(HAS_INTERPOLATEROW_SSE2)
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if (TestCpuFlag(kCpuHasSSE2) && dst_widthx4 >= 16) {
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InterpolateRow = InterpolateRow_Any_SSE2;
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if (IS_ALIGNED(dst_widthx4, 16)) {
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InterpolateRow = InterpolateRow_Unaligned_SSE2;
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if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride, 16) &&
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IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride, 16)) {
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InterpolateRow = InterpolateRow_SSE2;
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}
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}
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}
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#endif
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#if defined(HAS_INTERPOLATEROW_SSSE3)
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if (TestCpuFlag(kCpuHasSSSE3) && dst_widthx4 >= 16) {
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InterpolateRow = InterpolateRow_Any_SSSE3;
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if (IS_ALIGNED(dst_widthx4, 16)) {
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InterpolateRow = InterpolateRow_Unaligned_SSSE3;
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if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride, 16) &&
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IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride, 16)) {
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InterpolateRow = InterpolateRow_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_INTERPOLATEROW_NEON)
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if (TestCpuFlag(kCpuHasNEON) && dst_widthx4 >= 16) {
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InterpolateRow = InterpolateRow_Any_NEON;
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if (IS_ALIGNED(dst_widthx4, 16)) {
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InterpolateRow = InterpolateRow_NEON;
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}
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}
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#endif
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#if defined(HAS_INTERPOLATEROWS_MIPS_DSPR2)
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if (TestCpuFlag(kCpuHasMIPS_DSPR2) && dst_widthx4 >= 4 &&
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IS_ALIGNED(src_argb, 4) && IS_ALIGNED(src_stride, 4) &&
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IS_ALIGNED(dst_argb, 4) && IS_ALIGNED(dst_stride, 4)) {
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InterpolateRow = InterpolateRow_Any_MIPS_DSPR2;
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if (IS_ALIGNED(dst_widthx4, 4)) {
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InterpolateRow = InterpolateRow_MIPS_DSPR2;
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}
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}
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#endif
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const int max_y = (src_height > 1) ? ((src_height - 1) << 16) - 1 : 0;
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for (int j = 0; j < dst_height; ++j) {
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if (y > max_y) {
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y = max_y;
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}
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int yi = y >> 16;
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int yf = filtering ? ((y >> 8) & 255) : 0;
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const uint8* src = src_argb + yi * src_stride;
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InterpolateRow(dst_argb, src, src_stride, dst_widthx4, yf);
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dst_argb += dst_stride;
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y += dy;
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}
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}
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#ifdef __cplusplus
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} // extern "C"
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} // namespace libyuv
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#endif
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