/* * Copyright 2011 The LibYuv Project Authors. All rights reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree.
*/
static __inlineint Abs(int v) { return v >= 0 ? v : -v;
}
// ScaleARGB ARGB, 1/2 // This is an optimized version for scaling down a ARGB to 1/2 of // its original size. staticvoid ScaleARGBDown2(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8_t* src_argb,
uint8_t* dst_argb, int x, int dx, int y, int dy, enum FilterMode filtering) { int j; int row_stride = src_stride * (dy >> 16); void (*ScaleARGBRowDown2)(const uint8_t* src_argb, ptrdiff_t src_stride,
uint8_t* dst_argb, int dst_width) =
filtering == kFilterNone
? ScaleARGBRowDown2_C
: (filtering == kFilterLinear ? ScaleARGBRowDown2Linear_C
: ScaleARGBRowDown2Box_C);
(void)src_width;
(void)src_height;
(void)dx;
assert(dx == 65536 * 2); // Test scale factor of 2.
assert((dy & 0x1ffff) == 0); // Test vertical scale is multiple of 2. // Advance to odd row, even column. if (filtering == kFilterBilinear) {
src_argb += (y >> 16) * (intptr_t)src_stride + (x >> 16) * 4;
} else {
src_argb += (y >> 16) * (intptr_t)src_stride + ((x >> 16) - 1) * 4;
}
// ScaleARGB ARGB, 1/4 // This is an optimized version for scaling down a ARGB to 1/4 of // its original size. staticint ScaleARGBDown4Box(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8_t* src_argb,
uint8_t* dst_argb, int x, int dx, int y, int dy) { int j; // Allocate 2 rows of ARGB. constint row_size = (dst_width * 2 * 4 + 31) & ~31; // TODO(fbarchard): Remove this row buffer and implement a ScaleARGBRowDown4 // but implemented via a 2 pass wrapper that uses a very small array on the // stack with a horizontal loop.
align_buffer_64(row, row_size * 2); if (!row) return 1; int row_stride = src_stride * (dy >> 16); void (*ScaleARGBRowDown2)(const uint8_t* src_argb, ptrdiff_t src_stride,
uint8_t* dst_argb, int dst_width) =
ScaleARGBRowDown2Box_C; // Advance to odd row, even column.
src_argb += (y >> 16) * (intptr_t)src_stride + (x >> 16) * 4;
(void)src_width;
(void)src_height;
(void)dx;
assert(dx == 65536 * 4); // Test scale factor of 4.
assert((dy & 0x3ffff) == 0); // Test vertical scale is multiple of 4. #ifdefined(HAS_SCALEARGBROWDOWN2_SSE2) if (TestCpuFlag(kCpuHasSSE2)) {
ScaleARGBRowDown2 = ScaleARGBRowDown2Box_Any_SSE2; if (IS_ALIGNED(dst_width, 4)) {
ScaleARGBRowDown2 = ScaleARGBRowDown2Box_SSE2;
}
} #endif #ifdefined(HAS_SCALEARGBROWDOWN2_NEON) if (TestCpuFlag(kCpuHasNEON)) {
ScaleARGBRowDown2 = ScaleARGBRowDown2Box_Any_NEON; if (IS_ALIGNED(dst_width, 8)) {
ScaleARGBRowDown2 = ScaleARGBRowDown2Box_NEON;
}
} #endif #ifdefined(HAS_SCALEARGBROWDOWN2_SME) if (TestCpuFlag(kCpuHasSME)) {
ScaleARGBRowDown2 = ScaleARGBRowDown2Box_SME;
} #endif #ifdefined(HAS_SCALEARGBROWDOWN2_RVV) if (TestCpuFlag(kCpuHasRVV)) {
ScaleARGBRowDown2 = ScaleARGBRowDown2Box_RVV;
} #endif
// Scale ARGB down with bilinear interpolation. staticint ScaleARGBBilinearDown(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8_t* src_argb,
uint8_t* dst_argb, int x, int dx, int y, int dy, enum FilterMode filtering) { int j; void (*InterpolateRow)(uint8_t* dst_argb, const uint8_t* src_argb,
ptrdiff_t src_stride, int dst_width, int source_y_fraction) = InterpolateRow_C; void (*ScaleARGBFilterCols)(uint8_t* dst_argb, const uint8_t* src_argb, int dst_width, int x, int dx) =
(src_width >= 32768) ? ScaleARGBFilterCols64_C : ScaleARGBFilterCols_C;
int64_t xlast = x + (int64_t)(dst_width - 1) * dx;
int64_t xl = (dx >= 0) ? x : xlast;
int64_t xr = (dx >= 0) ? xlast : x; int clip_src_width;
xl = (xl >> 16) & ~3; // Left edge aligned.
xr = (xr >> 16) + 1; // Right most pixel used. Bilinear uses 2 pixels.
xr = (xr + 1 + 3) & ~3; // 1 beyond 4 pixel aligned right most pixel. if (xr > src_width) {
xr = src_width;
}
clip_src_width = (int)(xr - xl) * 4; // Width aligned to 4.
src_argb += xl * 4;
x -= (int)(xl << 16); #ifdefined(HAS_INTERPOLATEROW_SSSE3) if (TestCpuFlag(kCpuHasSSSE3)) {
InterpolateRow = InterpolateRow_Any_SSSE3; if (IS_ALIGNED(clip_src_width, 16)) {
InterpolateRow = InterpolateRow_SSSE3;
}
} #endif #ifdefined(HAS_INTERPOLATEROW_AVX2) if (TestCpuFlag(kCpuHasAVX2)) {
InterpolateRow = InterpolateRow_Any_AVX2; if (IS_ALIGNED(clip_src_width, 32)) {
InterpolateRow = InterpolateRow_AVX2;
}
} #endif #ifdefined(HAS_INTERPOLATEROW_NEON) if (TestCpuFlag(kCpuHasNEON)) {
InterpolateRow = InterpolateRow_Any_NEON; if (IS_ALIGNED(clip_src_width, 16)) {
InterpolateRow = InterpolateRow_NEON;
}
} #endif #ifdefined(HAS_INTERPOLATEROW_SME) if (TestCpuFlag(kCpuHasSME)) {
InterpolateRow = InterpolateRow_SME;
} #endif #ifdefined(HAS_INTERPOLATEROW_MSA) if (TestCpuFlag(kCpuHasMSA)) {
InterpolateRow = InterpolateRow_Any_MSA; if (IS_ALIGNED(clip_src_width, 32)) {
InterpolateRow = InterpolateRow_MSA;
}
} #endif #ifdefined(HAS_INTERPOLATEROW_LSX) if (TestCpuFlag(kCpuHasLSX)) {
InterpolateRow = InterpolateRow_Any_LSX; if (IS_ALIGNED(clip_src_width, 32)) {
InterpolateRow = InterpolateRow_LSX;
}
} #endif #ifdefined(HAS_INTERPOLATEROW_RVV) if (TestCpuFlag(kCpuHasRVV)) {
InterpolateRow = InterpolateRow_RVV;
} #endif #ifdefined(HAS_SCALEARGBFILTERCOLS_SSSE3) if (TestCpuFlag(kCpuHasSSSE3) && src_width < 32768) {
ScaleARGBFilterCols = ScaleARGBFilterCols_SSSE3;
} #endif #ifdefined(HAS_SCALEARGBFILTERCOLS_NEON) if (TestCpuFlag(kCpuHasNEON)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_Any_NEON; if (IS_ALIGNED(dst_width, 4)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_NEON;
}
} #endif #ifdefined(HAS_SCALEARGBFILTERCOLS_MSA) if (TestCpuFlag(kCpuHasMSA)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_Any_MSA; if (IS_ALIGNED(dst_width, 8)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_MSA;
}
} #endif #ifdefined(HAS_SCALEARGBFILTERCOLS_LSX) if (TestCpuFlag(kCpuHasLSX)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_Any_LSX; if (IS_ALIGNED(dst_width, 8)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_LSX;
}
} #endif #ifdefined(HAS_SCALEARGBFILTERCOLS_RVV) if (TestCpuFlag(kCpuHasRVV)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_RVV;
} #endif
// TODO(fbarchard): Consider not allocating row buffer for kFilterLinear. // Allocate a row of ARGB.
{
align_buffer_64(row, clip_src_width * 4); if (!row) return 1;
constint max_y = (src_height - 1) << 16; if (y > max_y) {
y = max_y;
} for (j = 0; j < dst_height; ++j) { int yi = y >> 16; const uint8_t* src = src_argb + yi * (intptr_t)src_stride; if (filtering == kFilterLinear) {
ScaleARGBFilterCols(dst_argb, src, dst_width, x, dx);
} else { int yf = (y >> 8) & 255;
InterpolateRow(row, src, src_stride, clip_src_width, yf);
ScaleARGBFilterCols(dst_argb, row, dst_width, x, dx);
}
dst_argb += dst_stride;
y += dy; if (y > max_y) {
y = max_y;
}
}
free_aligned_buffer_64(row);
} return 0;
}
// Scale ARGB up with bilinear interpolation. staticint ScaleARGBBilinearUp(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8_t* src_argb,
uint8_t* dst_argb, int x, int dx, int y, int dy, enum FilterMode filtering) { int j; void (*InterpolateRow)(uint8_t* dst_argb, const uint8_t* src_argb,
ptrdiff_t src_stride, int dst_width, int source_y_fraction) = InterpolateRow_C; void (*ScaleARGBFilterCols)(uint8_t* dst_argb, const uint8_t* src_argb, int dst_width, int x, int dx) =
filtering ? ScaleARGBFilterCols_C : ScaleARGBCols_C; constint max_y = (src_height - 1) << 16; #ifdefined(HAS_INTERPOLATEROW_SSSE3) if (TestCpuFlag(kCpuHasSSSE3)) {
InterpolateRow = InterpolateRow_Any_SSSE3; if (IS_ALIGNED(dst_width, 4)) {
InterpolateRow = InterpolateRow_SSSE3;
}
} #endif #ifdefined(HAS_INTERPOLATEROW_AVX2) if (TestCpuFlag(kCpuHasAVX2)) {
InterpolateRow = InterpolateRow_Any_AVX2; if (IS_ALIGNED(dst_width, 8)) {
InterpolateRow = InterpolateRow_AVX2;
}
} #endif #ifdefined(HAS_INTERPOLATEROW_NEON) if (TestCpuFlag(kCpuHasNEON)) {
InterpolateRow = InterpolateRow_Any_NEON; if (IS_ALIGNED(dst_width, 4)) {
InterpolateRow = InterpolateRow_NEON;
}
} #endif #ifdefined(HAS_INTERPOLATEROW_SME) if (TestCpuFlag(kCpuHasSME)) {
InterpolateRow = InterpolateRow_SME;
} #endif #ifdefined(HAS_INTERPOLATEROW_MSA) if (TestCpuFlag(kCpuHasMSA)) {
InterpolateRow = InterpolateRow_Any_MSA; if (IS_ALIGNED(dst_width, 8)) {
InterpolateRow = InterpolateRow_MSA;
}
} #endif #ifdefined(HAS_INTERPOLATEROW_LSX) if (TestCpuFlag(kCpuHasLSX)) {
InterpolateRow = InterpolateRow_Any_LSX; if (IS_ALIGNED(dst_width, 8)) {
InterpolateRow = InterpolateRow_LSX;
}
} #endif #ifdefined(HAS_INTERPOLATEROW_RVV) if (TestCpuFlag(kCpuHasRVV)) {
InterpolateRow = InterpolateRow_RVV;
} #endif if (src_width >= 32768) {
ScaleARGBFilterCols =
filtering ? ScaleARGBFilterCols64_C : ScaleARGBCols64_C;
} #ifdefined(HAS_SCALEARGBFILTERCOLS_SSSE3) if (filtering && TestCpuFlag(kCpuHasSSSE3) && src_width < 32768) {
ScaleARGBFilterCols = ScaleARGBFilterCols_SSSE3;
} #endif #ifdefined(HAS_SCALEARGBFILTERCOLS_NEON) if (filtering && TestCpuFlag(kCpuHasNEON)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_Any_NEON; if (IS_ALIGNED(dst_width, 4)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_NEON;
}
} #endif #ifdefined(HAS_SCALEARGBFILTERCOLS_MSA) if (filtering && TestCpuFlag(kCpuHasMSA)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_Any_MSA; if (IS_ALIGNED(dst_width, 8)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_MSA;
}
} #endif #ifdefined(HAS_SCALEARGBFILTERCOLS_LSX) if (filtering && TestCpuFlag(kCpuHasLSX)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_Any_LSX; if (IS_ALIGNED(dst_width, 8)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_LSX;
}
} #endif #ifdefined(HAS_SCALEARGBFILTERCOLS_RVV) if (filtering && TestCpuFlag(kCpuHasRVV)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_RVV;
} #endif #ifdefined(HAS_SCALEARGBCOLS_SSE2) if (!filtering && TestCpuFlag(kCpuHasSSE2) && src_width < 32768) {
ScaleARGBFilterCols = ScaleARGBCols_SSE2;
} #endif #ifdefined(HAS_SCALEARGBCOLS_NEON) if (!filtering && TestCpuFlag(kCpuHasNEON)) {
ScaleARGBFilterCols = ScaleARGBCols_Any_NEON; if (IS_ALIGNED(dst_width, 8)) {
ScaleARGBFilterCols = ScaleARGBCols_NEON;
}
} #endif #ifdefined(HAS_SCALEARGBCOLS_MSA) if (!filtering && TestCpuFlag(kCpuHasMSA)) {
ScaleARGBFilterCols = ScaleARGBCols_Any_MSA; if (IS_ALIGNED(dst_width, 4)) {
ScaleARGBFilterCols = ScaleARGBCols_MSA;
}
} #endif #ifdefined(HAS_SCALEARGBCOLS_LSX) if (!filtering && TestCpuFlag(kCpuHasLSX)) {
ScaleARGBFilterCols = ScaleARGBCols_Any_LSX; if (IS_ALIGNED(dst_width, 4)) {
ScaleARGBFilterCols = ScaleARGBCols_LSX;
}
} #endif if (!filtering && src_width * 2 == dst_width && x < 0x8000) {
ScaleARGBFilterCols = ScaleARGBColsUp2_C; #ifdefined(HAS_SCALEARGBCOLSUP2_SSE2) if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(dst_width, 8)) {
ScaleARGBFilterCols = ScaleARGBColsUp2_SSE2;
} #endif
}
if (y > max_y) {
y = max_y;
}
{ int yi = y >> 16; const uint8_t* src = src_argb + yi * (intptr_t)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_argb + yi * (intptr_t)src_stride;
} if (yi != lasty) {
ScaleARGBFilterCols(rowptr, src, dst_width, x, dx);
rowptr += rowstride;
rowstride = -rowstride;
lasty = yi; if ((y + 65536) < max_y) {
src += src_stride;
}
}
} if (filtering == kFilterLinear) {
InterpolateRow(dst_argb, rowptr, 0, dst_width * 4, 0);
} else { int yf = (y >> 8) & 255;
InterpolateRow(dst_argb, rowptr, rowstride, dst_width * 4, yf);
}
dst_argb += dst_stride;
y += dy;
}
free_aligned_buffer_64(row);
} return 0;
}
#ifdef YUVSCALEUP // Scale YUV to ARGB up with bilinear interpolation. staticint ScaleYUVToARGBBilinearUp(int src_width, int src_height, int dst_width, int dst_height, int src_stride_y, int src_stride_u, int src_stride_v, int dst_stride_argb, const uint8_t* src_y, const uint8_t* src_u, const uint8_t* src_v,
uint8_t* dst_argb, int x, int dx, int y, int dy, enum FilterMode filtering) { int j; void (*I422ToARGBRow)(const uint8_t* y_buf, const uint8_t* u_buf, const uint8_t* v_buf, uint8_t* rgb_buf, int width) =
I422ToARGBRow_C; #ifdefined(HAS_I422TOARGBROW_SSSE3) if (TestCpuFlag(kCpuHasSSSE3)) {
I422ToARGBRow = I422ToARGBRow_Any_SSSE3; if (IS_ALIGNED(src_width, 8)) {
I422ToARGBRow = I422ToARGBRow_SSSE3;
}
} #endif #ifdefined(HAS_I422TOARGBROW_AVX2) if (TestCpuFlag(kCpuHasAVX2)) {
I422ToARGBRow = I422ToARGBRow_Any_AVX2; if (IS_ALIGNED(src_width, 16)) {
I422ToARGBRow = I422ToARGBRow_AVX2;
}
} #endif #ifdefined(HAS_I422TOARGBROW_AVX512BW) if (TestCpuFlag(kCpuHasAVX512BW | kCpuHasAVX512VL) ==
(kCpuHasAVX512BW | kCpuHasAVX512VL)) {
I422ToARGBRow = I422ToARGBRow_Any_AVX512BW; if (IS_ALIGNED(src_width, 32)) {
I422ToARGBRow = I422ToARGBRow_AVX512BW;
}
} #endif #ifdefined(HAS_I422TOARGBROW_NEON) if (TestCpuFlag(kCpuHasNEON)) {
I422ToARGBRow = I422ToARGBRow_Any_NEON; if (IS_ALIGNED(src_width, 8)) {
I422ToARGBRow = I422ToARGBRow_NEON;
}
} #endif #ifdefined(HAS_I422TOARGBROW_SVE2) if (TestCpuFlag(kCpuHasSVE2)) {
I422ToARGBRow = I422ToARGBRow_SVE2;
} #endif #ifdefined(HAS_I422TOARGBROW_SME) if (TestCpuFlag(kCpuHasSME)) {
I422ToARGBRow = I422ToARGBRow_SME;
} #endif #ifdefined(HAS_I422TOARGBROW_MSA) if (TestCpuFlag(kCpuHasMSA)) {
I422ToARGBRow = I422ToARGBRow_Any_MSA; if (IS_ALIGNED(src_width, 8)) {
I422ToARGBRow = I422ToARGBRow_MSA;
}
} #endif #ifdefined(HAS_I422TOARGBROW_LSX) if (TestCpuFlag(kCpuHasLSX)) {
I422ToARGBRow = I422ToARGBRow_Any_LSX; if (IS_ALIGNED(src_width, 16)) {
I422ToARGBRow = I422ToARGBRow_LSX;
}
} #endif #ifdefined(HAS_I422TOARGBROW_LASX) if (TestCpuFlag(kCpuHasLASX)) {
I422ToARGBRow = I422ToARGBRow_Any_LASX; if (IS_ALIGNED(src_width, 32)) {
I422ToARGBRow = I422ToARGBRow_LASX;
}
} #endif #ifdefined(HAS_I422TOARGBROW_RVV) if (TestCpuFlag(kCpuHasRVV)) {
I422ToARGBRow = I422ToARGBRow_RVV;
} #endif
void (*InterpolateRow)(uint8_t* dst_argb, const uint8_t* src_argb,
ptrdiff_t src_stride, int dst_width, int source_y_fraction) = InterpolateRow_C; #ifdefined(HAS_INTERPOLATEROW_SSSE3) if (TestCpuFlag(kCpuHasSSSE3)) {
InterpolateRow = InterpolateRow_Any_SSSE3; if (IS_ALIGNED(dst_width, 4)) {
InterpolateRow = InterpolateRow_SSSE3;
}
} #endif #ifdefined(HAS_INTERPOLATEROW_AVX2) if (TestCpuFlag(kCpuHasAVX2)) {
InterpolateRow = InterpolateRow_Any_AVX2; if (IS_ALIGNED(dst_width, 8)) {
InterpolateRow = InterpolateRow_AVX2;
}
} #endif #ifdefined(HAS_INTERPOLATEROW_NEON) if (TestCpuFlag(kCpuHasNEON)) {
InterpolateRow = InterpolateRow_Any_NEON; if (IS_ALIGNED(dst_width, 4)) {
InterpolateRow = InterpolateRow_NEON;
}
} #endif #ifdefined(HAS_INTERPOLATEROW_SME) if (TestCpuFlag(kCpuHasSME)) {
InterpolateRow = InterpolateRow_SME;
} #endif #ifdefined(HAS_INTERPOLATEROW_MSA) if (TestCpuFlag(kCpuHasMSA)) {
InterpolateRow = InterpolateRow_Any_MSA; if (IS_ALIGNED(dst_width, 8)) {
InterpolateRow = InterpolateRow_MSA;
}
} #endif #ifdefined(HAS_INTERPOLATEROW_LSX) if (TestCpuFlag(kCpuHasLSX)) {
InterpolateRow = InterpolateRow_Any_LSX; if (IS_ALIGNED(dst_width, 8)) {
InterpolateRow = InterpolateRow_LSX;
}
} #endif #ifdefined(HAS_INTERPOLATEROW_RVV) if (TestCpuFlag(kCpuHasRVV)) {
InterpolateRow = InterpolateRow_RVV;
} #endif
void (*ScaleARGBFilterCols)(uint8_t* dst_argb, const uint8_t* src_argb, int dst_width, int x, int dx) =
filtering ? ScaleARGBFilterCols_C : ScaleARGBCols_C; if (src_width >= 32768) {
ScaleARGBFilterCols =
filtering ? ScaleARGBFilterCols64_C : ScaleARGBCols64_C;
} #ifdefined(HAS_SCALEARGBFILTERCOLS_SSSE3) if (filtering && TestCpuFlag(kCpuHasSSSE3) && src_width < 32768) {
ScaleARGBFilterCols = ScaleARGBFilterCols_SSSE3;
} #endif #ifdefined(HAS_SCALEARGBFILTERCOLS_NEON) if (filtering && TestCpuFlag(kCpuHasNEON)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_Any_NEON; if (IS_ALIGNED(dst_width, 4)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_NEON;
}
} #endif #ifdefined(HAS_SCALEARGBFILTERCOLS_MSA) if (filtering && TestCpuFlag(kCpuHasMSA)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_Any_MSA; if (IS_ALIGNED(dst_width, 8)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_MSA;
}
} #endif #ifdefined(HAS_SCALEARGBFILTERCOLS_LSX) if (filtering && TestCpuFlag(kCpuHasLSX)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_Any_LSX; if (IS_ALIGNED(dst_width, 8)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_LSX;
}
} #endif #ifdefined(HAS_SCALEARGBFILTERCOLS_RVV) if (filtering && TestCpuFlag(kCpuHasRVV)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_RVV;
} #endif #ifdefined(HAS_SCALEARGBCOLS_SSE2) if (!filtering && TestCpuFlag(kCpuHasSSE2) && src_width < 32768) {
ScaleARGBFilterCols = ScaleARGBCols_SSE2;
} #endif #ifdefined(HAS_SCALEARGBCOLS_NEON) if (!filtering && TestCpuFlag(kCpuHasNEON)) {
ScaleARGBFilterCols = ScaleARGBCols_Any_NEON; if (IS_ALIGNED(dst_width, 8)) {
ScaleARGBFilterCols = ScaleARGBCols_NEON;
}
} #endif #ifdefined(HAS_SCALEARGBCOLS_MSA) if (!filtering && TestCpuFlag(kCpuHasMSA)) {
ScaleARGBFilterCols = ScaleARGBCols_Any_MSA; if (IS_ALIGNED(dst_width, 4)) {
ScaleARGBFilterCols = ScaleARGBCols_MSA;
}
} #endif #ifdefined(HAS_SCALEARGBCOLS_LSX) if (!filtering && TestCpuFlag(kCpuHasLSX)) {
ScaleARGBFilterCols = ScaleARGBCols_Any_LSX; if (IS_ALIGNED(dst_width, 4)) {
ScaleARGBFilterCols = ScaleARGBCols_LSX;
}
} #endif if (!filtering && src_width * 2 == dst_width && x < 0x8000) {
ScaleARGBFilterCols = ScaleARGBColsUp2_C; #ifdefined(HAS_SCALEARGBCOLSUP2_SSE2) if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(dst_width, 8)) {
ScaleARGBFilterCols = ScaleARGBColsUp2_SSE2;
} #endif
}
constint max_y = (src_height - 1) << 16; if (y > max_y) {
y = max_y;
} constint kYShift = 1; // Shift Y by 1 to convert Y plane to UV coordinate. int yi = y >> 16; int uv_yi = yi >> kYShift; const uint8_t* src_row_y = src_y + yi * (intptr_t)src_stride_y; const uint8_t* src_row_u = src_u + uv_yi * (intptr_t)src_stride_u; const uint8_t* src_row_v = src_v + uv_yi * (intptr_t)src_stride_v;
// Allocate 1 row of ARGB for source conversion and 2 rows of ARGB // scaled horizontally to the destination width. constint row_size = (dst_width * 4 + 31) & ~31;
align_buffer_64(row, row_size * 2 + src_width * 4);
uint8_t* argb_row = row + row_size * 2;
uint8_t* rowptr = row; int rowstride = row_size; int lasty = yi; if (!row) return 1;
// TODO(fbarchard): Convert first 2 rows of YUV to ARGB.
ScaleARGBFilterCols(rowptr, src_row_y, dst_width, x, dx); if (src_height > 1) {
src_row_y += src_stride_y; if (yi & 1) {
src_row_u += src_stride_u;
src_row_v += src_stride_v;
}
}
ScaleARGBFilterCols(rowptr + rowstride, src_row_y, dst_width, x, dx); if (src_height > 2) {
src_row_y += src_stride_y; if (!(yi & 1)) {
src_row_u += src_stride_u;
src_row_v += src_stride_v;
}
}
for (j = 0; j < dst_height; ++j) {
yi = y >> 16; if (yi != lasty) { if (y > max_y) {
y = max_y;
yi = y >> 16;
uv_yi = yi >> kYShift;
src_row_y = src_y + yi * (intptr_t)src_stride_y;
src_row_u = src_u + uv_yi * (intptr_t)src_stride_u;
src_row_v = src_v + uv_yi * (intptr_t)src_stride_v;
} if (yi != lasty) { // TODO(fbarchard): Convert the clipped region of row.
I422ToARGBRow(src_row_y, src_row_u, src_row_v, argb_row, src_width);
ScaleARGBFilterCols(rowptr, argb_row, dst_width, x, dx);
rowptr += rowstride;
rowstride = -rowstride;
lasty = yi;
src_row_y += src_stride_y; if (yi & 1) {
src_row_u += src_stride_u;
src_row_v += src_stride_v;
}
}
} if (filtering == kFilterLinear) {
InterpolateRow(dst_argb, rowptr, 0, dst_width * 4, 0);
} else { int yf = (y >> 8) & 255;
InterpolateRow(dst_argb, rowptr, rowstride, dst_width * 4, yf);
}
dst_argb += dst_stride_argb;
y += dy;
}
free_aligned_buffer_64(row); return 0;
} #endif
// Scale ARGB 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.
staticvoid ScaleARGBSimple(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8_t* src_argb,
uint8_t* dst_argb, int x, int dx, int y, int dy) { int j; void (*ScaleARGBCols)(uint8_t* dst_argb, const uint8_t* src_argb, int dst_width, int x, int dx) =
(src_width >= 32768) ? ScaleARGBCols64_C : ScaleARGBCols_C;
(void)src_height; #ifdefined(HAS_SCALEARGBCOLS_SSE2) if (TestCpuFlag(kCpuHasSSE2) && src_width < 32768) {
ScaleARGBCols = ScaleARGBCols_SSE2;
} #endif #ifdefined(HAS_SCALEARGBCOLS_NEON) if (TestCpuFlag(kCpuHasNEON)) {
ScaleARGBCols = ScaleARGBCols_Any_NEON; if (IS_ALIGNED(dst_width, 8)) {
ScaleARGBCols = ScaleARGBCols_NEON;
}
} #endif #ifdefined(HAS_SCALEARGBCOLS_MSA) if (TestCpuFlag(kCpuHasMSA)) {
ScaleARGBCols = ScaleARGBCols_Any_MSA; if (IS_ALIGNED(dst_width, 4)) {
ScaleARGBCols = ScaleARGBCols_MSA;
}
} #endif #ifdefined(HAS_SCALEARGBCOLS_LSX) if (TestCpuFlag(kCpuHasLSX)) {
ScaleARGBCols = ScaleARGBCols_Any_LSX; if (IS_ALIGNED(dst_width, 4)) {
ScaleARGBCols = ScaleARGBCols_LSX;
}
} #endif if (src_width * 2 == dst_width && x < 0x8000) {
ScaleARGBCols = ScaleARGBColsUp2_C; #ifdefined(HAS_SCALEARGBCOLSUP2_SSE2) if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(dst_width, 8)) {
ScaleARGBCols = ScaleARGBColsUp2_SSE2;
} #endif
}
// ScaleARGB a ARGB. // This function in turn calls a scaling function // suitable for handling the desired resolutions. staticint ScaleARGB(const uint8_t* src, int src_stride, int src_width, int src_height,
uint8_t* dst, int dst_stride, int dst_width, int dst_height, int clip_x, int clip_y, int clip_width, int clip_height, 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; // ARGB does not support box filter yet, but allow the user to pass it. // Simplify filtering when possible.
filtering = ScaleFilterReduce(src_width, src_height, dst_width, dst_height,
filtering);
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