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-rw-r--r--gfx/ycbcr/scale_yuv_argb.cpp1132
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diff --git a/gfx/ycbcr/scale_yuv_argb.cpp b/gfx/ycbcr/scale_yuv_argb.cpp
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+++ b/gfx/ycbcr/scale_yuv_argb.cpp
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+/*
+ * Copyright 2011 The LibYuv Project Authors. All rights reserved.
+ * Copyright 2016 Mozilla Foundation
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "libyuv/scale.h"
+
+#include <assert.h>
+#include <string.h>
+
+#include "libyuv/convert_argb.h"
+#include "libyuv/cpu_id.h"
+#include "libyuv/row.h"
+#include "libyuv/scale_row.h"
+#include "libyuv/video_common.h"
+
+#include "mozilla/gfx/Types.h"
+
+#ifdef __cplusplus
+namespace libyuv {
+extern "C" {
+#endif
+
+// YUV to RGB conversion and scaling functions were implemented by referencing
+// scale_argb.cc
+//
+// libyuv already has ScaleYUVToARGBBilinearUp(), but its implementation is not
+// completed yet. Implementations of the functions are based on it.
+// At first, ScaleYUVToARGBBilinearUp() was implemented by modifying the
+// libyuv's one. Then all another functions were implemented similarly.
+//
+// Function relationship between yuv_convert.cpp and scale_argb.cc are like
+// the followings
+// - ScaleYUVToARGBDown2() <-- ScaleARGBDown2()
+// - ScaleYUVToARGBDownEven() <-- ScaleARGBDownEven()
+// - ScaleYUVToARGBBilinearDown() <-- ScaleARGBBilinearDown()
+// - ScaleYUVToARGBBilinearUp() <-- ScaleARGBBilinearUp() and ScaleYUVToARGBBilinearUp() in libyuv
+// - ScaleYUVToARGBSimple() <-- ScaleARGBSimple()
+// - ScaleYUVToARGB() <-- ScaleARGB() // Removed some function calls for simplicity.
+// - YUVToARGBScale() <-- ARGBScale()
+//
+// Callings and selections of InterpolateRow() and ScaleARGBFilterCols() were
+// kept as same as possible.
+//
+// The followings changes were done to each scaling functions.
+//
+// -[1] Allocate YUV conversion buffer and use it as source buffer of scaling.
+// Its usage is borrowed from the libyuv's ScaleYUVToARGBBilinearUp().
+// -[2] Conversion from YUV to RGB was abstracted as YUVBuferIter.
+// It is for handling multiple yuv color formats.
+// -[3] Modified scaling functions as to handle YUV conversion buffer and
+// use YUVBuferIter.
+// -[4] Color conversion function selections in YUVBuferIter were borrowed from
+// I444ToARGBMatrix(), I422ToARGBMatrix() and I420ToARGBMatrix()
+
+typedef mozilla::gfx::YUVColorSpace YUVColorSpace;
+
+struct YUVBuferIter {
+ int src_width;
+ int src_height;
+ int src_stride_y;
+ int src_stride_u;
+ int src_stride_v;
+ const uint8_t* src_y;
+ const uint8_t* src_u;
+ const uint8_t* src_v;
+
+ uint32_t src_fourcc;
+ const struct YuvConstants* yuvconstants;
+ int y_index;
+ const uint8_t* src_row_y;
+ const uint8_t* src_row_u;
+ const uint8_t* src_row_v;
+
+ void (*YUVToARGBRow)(const uint8_t* y_buf,
+ const uint8_t* u_buf,
+ const uint8_t* v_buf,
+ uint8_t* rgb_buf,
+ const struct YuvConstants* yuvconstants,
+ int width);
+ void (*MoveTo)(YUVBuferIter& iter, int y_index);
+ void (*MoveToNextRow)(YUVBuferIter& iter);
+};
+
+void YUVBuferIter_InitI422(YUVBuferIter& iter) {
+ iter.YUVToARGBRow = I422ToARGBRow_C;
+#if defined(HAS_I422TOARGBROW_SSSE3)
+ if (TestCpuFlag(kCpuHasSSSE3)) {
+ iter.YUVToARGBRow = I422ToARGBRow_Any_SSSE3;
+ if (IS_ALIGNED(iter.src_width, 8)) {
+ iter.YUVToARGBRow = I422ToARGBRow_SSSE3;
+ }
+ }
+#endif
+#if defined(HAS_I422TOARGBROW_AVX2)
+ if (TestCpuFlag(kCpuHasAVX2)) {
+ iter.YUVToARGBRow = I422ToARGBRow_Any_AVX2;
+ if (IS_ALIGNED(iter.src_width, 16)) {
+ iter.YUVToARGBRow = I422ToARGBRow_AVX2;
+ }
+ }
+#endif
+#if defined(HAS_I422TOARGBROW_NEON)
+ if (TestCpuFlag(kCpuHasNEON)) {
+ iter.YUVToARGBRow = I422ToARGBRow_Any_NEON;
+ if (IS_ALIGNED(iter.src_width, 8)) {
+ iter.YUVToARGBRow = I422ToARGBRow_NEON;
+ }
+ }
+#endif
+#if defined(HAS_I422TOARGBROW_DSPR2)
+ if (TestCpuFlag(kCpuHasDSPR2) && IS_ALIGNED(iter.src_width, 4) &&
+ IS_ALIGNED(iter.src_y, 4) && IS_ALIGNED(iter.src_stride_y, 4) &&
+ IS_ALIGNED(iter.src_u, 2) && IS_ALIGNED(iter.src_stride_u, 2) &&
+ IS_ALIGNED(iter.src_v, 2) && IS_ALIGNED(iter.src_stride_v, 2) {
+ // Always satisfy IS_ALIGNED(argb_cnv_row, 4) && IS_ALIGNED(argb_cnv_rowstride, 4)
+ iter.YUVToARGBRow = I422ToARGBRow_DSPR2;
+ }
+#endif
+}
+
+void YUVBuferIter_InitI444(YUVBuferIter& iter) {
+ iter.YUVToARGBRow = I444ToARGBRow_C;
+#if defined(HAS_I444TOARGBROW_SSSE3)
+ if (TestCpuFlag(kCpuHasSSSE3)) {
+ iter.YUVToARGBRow = I444ToARGBRow_Any_SSSE3;
+ if (IS_ALIGNED(iter.src_width, 8)) {
+ iter.YUVToARGBRow = I444ToARGBRow_SSSE3;
+ }
+ }
+#endif
+#if defined(HAS_I444TOARGBROW_AVX2)
+ if (TestCpuFlag(kCpuHasAVX2)) {
+ iter.YUVToARGBRow = I444ToARGBRow_Any_AVX2;
+ if (IS_ALIGNED(iter.src_width, 16)) {
+ iter.YUVToARGBRow = I444ToARGBRow_AVX2;
+ }
+ }
+#endif
+#if defined(HAS_I444TOARGBROW_NEON)
+ if (TestCpuFlag(kCpuHasNEON)) {
+ iter.YUVToARGBRow = I444ToARGBRow_Any_NEON;
+ if (IS_ALIGNED(iter.src_width, 8)) {
+ iter.YUVToARGBRow = I444ToARGBRow_NEON;
+ }
+ }
+#endif
+}
+
+
+static void YUVBuferIter_MoveToForI444(YUVBuferIter& iter, int y_index) {
+ iter.y_index = y_index;
+ iter.src_row_y = iter.src_y + y_index * iter.src_stride_y;
+ iter.src_row_u = iter.src_u + y_index * iter.src_stride_u;
+ iter.src_row_v = iter.src_v + y_index * iter.src_stride_v;
+}
+
+static void YUVBuferIter_MoveToNextRowForI444(YUVBuferIter& iter) {
+ iter.src_row_y += iter.src_stride_y;
+ iter.src_row_u += iter.src_stride_u;
+ iter.src_row_v += iter.src_stride_v;
+ iter.y_index++;
+}
+
+static void YUVBuferIter_MoveToForI422(YUVBuferIter& iter, int y_index) {
+ iter.y_index = y_index;
+ iter.src_row_y = iter.src_y + y_index * iter.src_stride_y;
+ iter.src_row_u = iter.src_u + y_index * iter.src_stride_u;
+ iter.src_row_v = iter.src_v + y_index * iter.src_stride_v;
+}
+
+static void YUVBuferIter_MoveToNextRowForI422(YUVBuferIter& iter) {
+ iter.src_row_y += iter.src_stride_y;
+ iter.src_row_u += iter.src_stride_u;
+ iter.src_row_v += iter.src_stride_v;
+ iter.y_index++;
+}
+
+static void YUVBuferIter_MoveToForI420(YUVBuferIter& iter, int y_index) {
+ const int kYShift = 1; // Shift Y by 1 to convert Y plane to UV coordinate.
+ int uv_y_index = y_index >> kYShift;
+
+ iter.y_index = y_index;
+ iter.src_row_y = iter.src_y + y_index * iter.src_stride_y;
+ iter.src_row_u = iter.src_u + uv_y_index * iter.src_stride_u;
+ iter.src_row_v = iter.src_v + uv_y_index * iter.src_stride_v;
+}
+
+static void YUVBuferIter_MoveToNextRowForI420(YUVBuferIter& iter) {
+ iter.src_row_y += iter.src_stride_y;
+ if (iter.y_index & 1) {
+ iter.src_row_u += iter.src_stride_u;
+ iter.src_row_v += iter.src_stride_v;
+ }
+ iter.y_index++;
+}
+
+static __inline void YUVBuferIter_ConvertToARGBRow(YUVBuferIter& iter, uint8_t* argb_row) {
+ iter.YUVToARGBRow(iter.src_row_y, iter.src_row_u, iter.src_row_v, argb_row, iter.yuvconstants, iter.src_width);
+}
+
+void YUVBuferIter_Init(YUVBuferIter& iter, uint32_t src_fourcc, YUVColorSpace yuv_color_space) {
+ iter.src_fourcc = src_fourcc;
+ iter.y_index = 0;
+ iter.src_row_y = iter.src_y;
+ iter.src_row_u = iter.src_u;
+ iter.src_row_v = iter.src_v;
+ switch (yuv_color_space) {
+ case YUVColorSpace::BT2020:
+ iter.yuvconstants = &kYuv2020Constants;
+ break;
+ case YUVColorSpace::BT709:
+ iter.yuvconstants = &kYuvH709Constants;
+ break;
+ default:
+ iter.yuvconstants = &kYuvI601Constants;
+ }
+
+ if (src_fourcc == FOURCC_I444) {
+ YUVBuferIter_InitI444(iter);
+ iter.MoveTo = YUVBuferIter_MoveToForI444;
+ iter.MoveToNextRow = YUVBuferIter_MoveToNextRowForI444;
+ } else if(src_fourcc == FOURCC_I422){
+ YUVBuferIter_InitI422(iter);
+ iter.MoveTo = YUVBuferIter_MoveToForI422;
+ iter.MoveToNextRow = YUVBuferIter_MoveToNextRowForI422;
+ } else {
+ assert(src_fourcc == FOURCC_I420); // Should be FOURCC_I420
+ YUVBuferIter_InitI422(iter);
+ iter.MoveTo = YUVBuferIter_MoveToForI420;
+ iter.MoveToNextRow = YUVBuferIter_MoveToNextRowForI420;
+ }
+}
+
+// ScaleARGB ARGB, 1/2
+// This is an optimized version for scaling down a ARGB to 1/2 of
+// its original size.
+static void ScaleYUVToARGBDown2(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,
+ uint32_t src_fourcc,
+ YUVColorSpace yuv_color_space) {
+ int j;
+
+ // Allocate 2 rows of ARGB for source conversion.
+ const int kRowSize = (src_width * 4 + 15) & ~15;
+ align_buffer_64(argb_cnv_row, kRowSize * 2);
+ uint8_t* argb_cnv_rowptr = argb_cnv_row;
+ int argb_cnv_rowstride = kRowSize;
+
+ YUVBuferIter iter;
+ iter.src_width = src_width;
+ iter.src_height = src_height;
+ iter.src_stride_y = src_stride_y;
+ iter.src_stride_u = src_stride_u;
+ iter.src_stride_v = src_stride_v;
+ iter.src_y = src_y;
+ iter.src_u = src_u;
+ iter.src_v = src_v;
+ YUVBuferIter_Init(iter, src_fourcc, yuv_color_space);
+
+ 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);
+ 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.
+ int yi = y >> 16;
+ iter.MoveTo(iter, yi);
+ ptrdiff_t x_offset;
+ if (filtering == kFilterBilinear) {
+ x_offset = (x >> 16) * 4;
+ } else {
+ x_offset = ((x >> 16) - 1) * 4;
+ }
+#if defined(HAS_SCALEARGBROWDOWN2_SSE2)
+ if (TestCpuFlag(kCpuHasSSE2)) {
+ ScaleARGBRowDown2 = filtering == kFilterNone ? ScaleARGBRowDown2_Any_SSE2 :
+ (filtering == kFilterLinear ? ScaleARGBRowDown2Linear_Any_SSE2 :
+ ScaleARGBRowDown2Box_Any_SSE2);
+ if (IS_ALIGNED(dst_width, 4)) {
+ ScaleARGBRowDown2 = filtering == kFilterNone ? ScaleARGBRowDown2_SSE2 :
+ (filtering == kFilterLinear ? ScaleARGBRowDown2Linear_SSE2 :
+ ScaleARGBRowDown2Box_SSE2);
+ }
+ }
+
+#endif
+#if defined(HAS_SCALEARGBROWDOWN2_NEON)
+ if (TestCpuFlag(kCpuHasNEON)) {
+ ScaleARGBRowDown2 = filtering == kFilterNone ? ScaleARGBRowDown2_Any_NEON :
+ (filtering == kFilterLinear ? ScaleARGBRowDown2Linear_Any_NEON :
+ ScaleARGBRowDown2Box_Any_NEON);
+ if (IS_ALIGNED(dst_width, 8)) {
+ ScaleARGBRowDown2 = filtering == kFilterNone ? ScaleARGBRowDown2_NEON :
+ (filtering == kFilterLinear ? ScaleARGBRowDown2Linear_NEON :
+ ScaleARGBRowDown2Box_NEON);
+ }
+ }
+#endif
+
+ const int dyi = dy >> 16;
+ int lastyi = yi;
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_rowptr);
+ // Prepare next row if necessary
+ if (filtering != kFilterLinear) {
+ if ((yi + dyi) < (src_height - 1)) {
+ iter.MoveTo(iter, yi + dyi);
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_rowptr + argb_cnv_rowstride);
+ } else {
+ argb_cnv_rowstride = 0;
+ }
+ }
+
+ if (filtering == kFilterLinear) {
+ argb_cnv_rowstride = 0;
+ }
+ const int max_yi = src_height - 1;
+ const int max_yi_minus_dyi = max_yi - dyi;
+ for (j = 0; j < dst_height; ++j) {
+ if (yi != lastyi) {
+ if (yi > max_yi) {
+ yi = max_yi;
+ }
+ if (yi != lastyi) {
+ if (filtering == kFilterLinear) {
+ iter.MoveTo(iter, yi);
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_rowptr);
+ lastyi = yi;
+ } else {
+ // Prepare current row
+ if (yi == iter.y_index) {
+ argb_cnv_rowptr = argb_cnv_rowptr + argb_cnv_rowstride;
+ argb_cnv_rowstride = - argb_cnv_rowstride;
+ } else {
+ iter.MoveTo(iter, yi);
+ argb_cnv_rowptr = argb_cnv_row;
+ argb_cnv_rowstride = kRowSize;
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_rowptr);
+ }
+ // Prepare next row if necessary
+ if (iter.y_index < max_yi) {
+ int next_yi = yi < max_yi_minus_dyi ? yi + dyi : max_yi;
+ iter.MoveTo(iter, next_yi);
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_rowptr + argb_cnv_rowstride);
+ } else {
+ argb_cnv_rowstride = 0;
+ }
+ lastyi = yi;
+ }
+ }
+ }
+ ScaleARGBRowDown2(argb_cnv_rowptr + x_offset, argb_cnv_rowstride, dst_argb, dst_width);
+ dst_argb += dst_stride_argb;
+ yi += dyi;
+ }
+
+ free_aligned_buffer_64(argb_cnv_row);
+}
+
+// ScaleARGB ARGB Even
+// This is an optimized version for scaling down a ARGB to even
+// multiple of its original size.
+static void ScaleYUVToARGBDownEven(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,
+ uint32_t src_fourcc,
+ YUVColorSpace yuv_color_space) {
+ int j;
+ // Allocate 2 rows of ARGB for source conversion.
+ const int kRowSize = (src_width * 4 + 15) & ~15;
+ align_buffer_64(argb_cnv_row, kRowSize * 2);
+ uint8_t* argb_cnv_rowptr = argb_cnv_row;
+ int argb_cnv_rowstride = kRowSize;
+
+ int col_step = dx >> 16;
+ void (*ScaleARGBRowDownEven)(const uint8_t* src_argb, ptrdiff_t src_stride,
+ int src_step, uint8_t* dst_argb, int dst_width) =
+ filtering ? ScaleARGBRowDownEvenBox_C : ScaleARGBRowDownEven_C;
+ assert(IS_ALIGNED(src_width, 2));
+ assert(IS_ALIGNED(src_height, 2));
+ int yi = y >> 16;
+ const ptrdiff_t x_offset = (x >> 16) * 4;
+
+#if defined(HAS_SCALEARGBROWDOWNEVEN_SSE2)
+ if (TestCpuFlag(kCpuHasSSE2)) {
+ ScaleARGBRowDownEven = filtering ? ScaleARGBRowDownEvenBox_Any_SSE2 :
+ ScaleARGBRowDownEven_Any_SSE2;
+ if (IS_ALIGNED(dst_width, 4)) {
+ ScaleARGBRowDownEven = filtering ? ScaleARGBRowDownEvenBox_SSE2 :
+ ScaleARGBRowDownEven_SSE2;
+ }
+ }
+#endif
+#if defined(HAS_SCALEARGBROWDOWNEVEN_NEON)
+ if (TestCpuFlag(kCpuHasNEON)) {
+ ScaleARGBRowDownEven = filtering ? ScaleARGBRowDownEvenBox_Any_NEON :
+ ScaleARGBRowDownEven_Any_NEON;
+ if (IS_ALIGNED(dst_width, 4)) {
+ ScaleARGBRowDownEven = filtering ? ScaleARGBRowDownEvenBox_NEON :
+ ScaleARGBRowDownEven_NEON;
+ }
+ }
+#endif
+
+ YUVBuferIter iter;
+ iter.src_width = src_width;
+ iter.src_height = src_height;
+ iter.src_stride_y = src_stride_y;
+ iter.src_stride_u = src_stride_u;
+ iter.src_stride_v = src_stride_v;
+ iter.src_y = src_y;
+ iter.src_u = src_u;
+ iter.src_v = src_v;
+ YUVBuferIter_Init(iter, src_fourcc, yuv_color_space);
+
+ const int dyi = dy >> 16;
+ int lastyi = yi;
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_rowptr);
+ // Prepare next row if necessary
+ if (filtering != kFilterLinear) {
+ if ((yi + dyi) < (src_height - 1)) {
+ iter.MoveTo(iter, yi + dyi);
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_rowptr + argb_cnv_rowstride);
+ } else {
+ argb_cnv_rowstride = 0;
+ }
+ }
+
+ if (filtering == kFilterLinear) {
+ argb_cnv_rowstride = 0;
+ }
+ const int max_yi = src_height - 1;
+ const int max_yi_minus_dyi = max_yi - dyi;
+ for (j = 0; j < dst_height; ++j) {
+ if (yi != lastyi) {
+ if (yi > max_yi) {
+ yi = max_yi;
+ }
+ if (yi != lastyi) {
+ if (filtering == kFilterLinear) {
+ iter.MoveTo(iter, yi);
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_rowptr);
+ lastyi = yi;
+ } else {
+ // Prepare current row
+ if (yi == iter.y_index) {
+ argb_cnv_rowptr = argb_cnv_rowptr + argb_cnv_rowstride;
+ argb_cnv_rowstride = - argb_cnv_rowstride;
+ } else {
+ iter.MoveTo(iter, yi);
+ argb_cnv_rowptr = argb_cnv_row;
+ argb_cnv_rowstride = kRowSize;
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_rowptr);
+ }
+ // Prepare next row if necessary
+ if (iter.y_index < max_yi) {
+ int next_yi = yi < max_yi_minus_dyi ? yi + dyi : max_yi;
+ iter.MoveTo(iter, next_yi);
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_rowptr + argb_cnv_rowstride);
+ } else {
+ argb_cnv_rowstride = 0;
+ }
+ lastyi = yi;
+ }
+ }
+ }
+ ScaleARGBRowDownEven(argb_cnv_rowptr + x_offset, argb_cnv_rowstride, col_step, dst_argb, dst_width);
+ dst_argb += dst_stride_argb;
+ yi += dyi;
+ }
+ free_aligned_buffer_64(argb_cnv_row);
+}
+
+// Scale YUV to ARGB down with bilinear interpolation.
+static void ScaleYUVToARGBBilinearDown(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,
+ uint32_t src_fourcc,
+ YUVColorSpace yuv_color_space) {
+ 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.
+ const ptrdiff_t xl_offset = xl * 4;
+ x -= (int)(xl << 16);
+
+ // Allocate 2 row of ARGB for source conversion.
+ const int kRowSize = (src_width * 4 + 15) & ~15;
+ align_buffer_64(argb_cnv_row, kRowSize * 2);
+ uint8_t* argb_cnv_rowptr = argb_cnv_row;
+ int argb_cnv_rowstride = kRowSize;
+
+#if defined(HAS_INTERPOLATEROW_SSSE3)
+ if (TestCpuFlag(kCpuHasSSSE3)) {
+ InterpolateRow = InterpolateRow_Any_SSSE3;
+ if (IS_ALIGNED(clip_src_width, 16)) {
+ InterpolateRow = InterpolateRow_SSSE3;
+ }
+ }
+#endif
+#if defined(HAS_INTERPOLATEROW_AVX2)
+ if (TestCpuFlag(kCpuHasAVX2)) {
+ InterpolateRow = InterpolateRow_Any_AVX2;
+ if (IS_ALIGNED(clip_src_width, 32)) {
+ InterpolateRow = InterpolateRow_AVX2;
+ }
+ }
+#endif
+#if defined(HAS_INTERPOLATEROW_NEON)
+ if (TestCpuFlag(kCpuHasNEON)) {
+ InterpolateRow = InterpolateRow_Any_NEON;
+ if (IS_ALIGNED(clip_src_width, 16)) {
+ InterpolateRow = InterpolateRow_NEON;
+ }
+ }
+#endif
+#if defined(HAS_INTERPOLATEROW_DSPR2)
+ if (TestCpuFlag(kCpuHasDSPR2) &&
+ IS_ALIGNED(src_argb, 4) && IS_ALIGNED(argb_cnv_rowstride, 4)) {
+ InterpolateRow = InterpolateRow_Any_DSPR2;
+ if (IS_ALIGNED(clip_src_width, 4)) {
+ InterpolateRow = InterpolateRow_DSPR2;
+ }
+ }
+#endif
+#if defined(HAS_SCALEARGBFILTERCOLS_SSSE3)
+ if (TestCpuFlag(kCpuHasSSSE3) && src_width < 32768) {
+ ScaleARGBFilterCols = ScaleARGBFilterCols_SSSE3;
+ }
+#endif
+#if defined(HAS_SCALEARGBFILTERCOLS_NEON)
+ if (TestCpuFlag(kCpuHasNEON)) {
+ ScaleARGBFilterCols = ScaleARGBFilterCols_Any_NEON;
+ if (IS_ALIGNED(dst_width, 4)) {
+ ScaleARGBFilterCols = ScaleARGBFilterCols_NEON;
+ }
+ }
+#endif
+
+ int yi = y >> 16;
+
+ YUVBuferIter iter;
+ iter.src_width = src_width;
+ iter.src_height = src_height;
+ iter.src_stride_y = src_stride_y;
+ iter.src_stride_u = src_stride_u;
+ iter.src_stride_v = src_stride_v;
+ iter.src_y = src_y;
+ iter.src_u = src_u;
+ iter.src_v = src_v;
+ YUVBuferIter_Init(iter, src_fourcc, yuv_color_space);
+ iter.MoveTo(iter, yi);
+
+ // TODO(fbarchard): Consider not allocating row buffer for kFilterLinear.
+ // Allocate a row of ARGB.
+ align_buffer_64(row, clip_src_width * 4);
+
+ int lastyi = yi;
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_rowptr);
+ // Prepare next row if necessary
+ if (filtering != kFilterLinear) {
+ if ((yi + 1) < src_height) {
+ iter.MoveToNextRow(iter);
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_rowptr + argb_cnv_rowstride);
+ } else {
+ argb_cnv_rowstride = 0;
+ }
+ }
+
+ const int max_y = (src_height - 1) << 16;
+ const int max_yi = src_height - 1;
+ for (j = 0; j < dst_height; ++j) {
+ yi = y >> 16;
+ if (yi != lastyi) {
+ if (y > max_y) {
+ y = max_y;
+ yi = y >> 16;
+ }
+ if (yi != lastyi) {
+ if (filtering == kFilterLinear) {
+ iter.MoveTo(iter, yi);
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_rowptr);
+ lastyi = yi;
+ } else {
+ // Prepare current row
+ if (yi == iter.y_index) {
+ argb_cnv_rowptr = argb_cnv_rowptr + argb_cnv_rowstride;
+ argb_cnv_rowstride = - argb_cnv_rowstride;
+ } else {
+ iter.MoveTo(iter, yi);
+ argb_cnv_rowptr = argb_cnv_row;
+ argb_cnv_rowstride = kRowSize;
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_rowptr);
+ }
+ // Prepare next row if necessary
+ if (iter.y_index < max_yi) {
+ iter.MoveToNextRow(iter);
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_rowptr + argb_cnv_rowstride);
+ } else {
+ argb_cnv_rowstride = 0;
+ }
+ lastyi = yi;
+ }
+ }
+ }
+ if (filtering == kFilterLinear) {
+ ScaleARGBFilterCols(dst_argb, argb_cnv_rowptr + xl_offset, dst_width, x, dx);
+ } else {
+ int yf = (y >> 8) & 255;
+ InterpolateRow(row, argb_cnv_rowptr + xl_offset, argb_cnv_rowstride, clip_src_width, yf);
+ ScaleARGBFilterCols(dst_argb, row, dst_width, x, dx);
+ }
+ dst_argb += dst_stride_argb;
+ y += dy;
+ }
+ free_aligned_buffer_64(row);
+ free_aligned_buffer_64(argb_cnv_row);
+}
+
+// Scale YUV to ARGB up with bilinear interpolation.
+static void 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,
+ uint32_t src_fourcc,
+ YUVColorSpace yuv_color_space) {
+ 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;
+ const int max_y = (src_height - 1) << 16;
+
+ // Allocate 1 row of ARGB for source conversion.
+ align_buffer_64(argb_cnv_row, src_width * 4);
+
+#if defined(HAS_INTERPOLATEROW_SSSE3)
+ if (TestCpuFlag(kCpuHasSSSE3)) {
+ InterpolateRow = InterpolateRow_Any_SSSE3;
+ if (IS_ALIGNED(dst_width, 4)) {
+ InterpolateRow = InterpolateRow_SSSE3;
+ }
+ }
+#endif
+#if defined(HAS_INTERPOLATEROW_AVX2)
+ if (TestCpuFlag(kCpuHasAVX2)) {
+ InterpolateRow = InterpolateRow_Any_AVX2;
+ if (IS_ALIGNED(dst_width, 8)) {
+ InterpolateRow = InterpolateRow_AVX2;
+ }
+ }
+#endif
+#if defined(HAS_INTERPOLATEROW_NEON)
+ if (TestCpuFlag(kCpuHasNEON)) {
+ InterpolateRow = InterpolateRow_Any_NEON;
+ if (IS_ALIGNED(dst_width, 4)) {
+ InterpolateRow = InterpolateRow_NEON;
+ }
+ }
+#endif
+#if defined(HAS_INTERPOLATEROW_DSPR2)
+ if (TestCpuFlag(kCpuHasDSPR2) &&
+ IS_ALIGNED(dst_argb, 4) && IS_ALIGNED(dst_stride_argb, 4)) {
+ InterpolateRow = InterpolateRow_DSPR2;
+ }
+#endif
+ if (src_width >= 32768) {
+ ScaleARGBFilterCols = filtering ?
+ ScaleARGBFilterCols64_C : ScaleARGBCols64_C;
+ }
+#if defined(HAS_SCALEARGBFILTERCOLS_SSSE3)
+ if (filtering && TestCpuFlag(kCpuHasSSSE3) && src_width < 32768) {
+ ScaleARGBFilterCols = ScaleARGBFilterCols_SSSE3;
+ }
+#endif
+#if defined(HAS_SCALEARGBFILTERCOLS_NEON)
+ if (filtering && TestCpuFlag(kCpuHasNEON)) {
+ ScaleARGBFilterCols = ScaleARGBFilterCols_Any_NEON;
+ if (IS_ALIGNED(dst_width, 4)) {
+ ScaleARGBFilterCols = ScaleARGBFilterCols_NEON;
+ }
+ }
+#endif
+#if defined(HAS_SCALEARGBCOLS_SSE2)
+ if (!filtering && TestCpuFlag(kCpuHasSSE2) && src_width < 32768) {
+ ScaleARGBFilterCols = ScaleARGBCols_SSE2;
+ }
+#endif
+#if defined(HAS_SCALEARGBCOLS_NEON)
+ if (!filtering && TestCpuFlag(kCpuHasNEON)) {
+ ScaleARGBFilterCols = ScaleARGBCols_Any_NEON;
+ if (IS_ALIGNED(dst_width, 8)) {
+ ScaleARGBFilterCols = ScaleARGBCols_NEON;
+ }
+ }
+#endif
+ if (!filtering && src_width * 2 == dst_width && x < 0x8000) {
+ ScaleARGBFilterCols = ScaleARGBColsUp2_C;
+#if defined(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;
+
+ YUVBuferIter iter;
+ iter.src_width = src_width;
+ iter.src_height = src_height;
+ iter.src_stride_y = src_stride_y;
+ iter.src_stride_u = src_stride_u;
+ iter.src_stride_v = src_stride_v;
+ iter.src_y = src_y;
+ iter.src_u = src_u;
+ iter.src_v = src_v;
+ YUVBuferIter_Init(iter, src_fourcc, yuv_color_space);
+ iter.MoveTo(iter, yi);
+
+ // Allocate 2 rows of ARGB.
+ const int kRowSize = (dst_width * 4 + 15) & ~15;
+ align_buffer_64(row, kRowSize * 2);
+
+ uint8_t* rowptr = row;
+ int rowstride = kRowSize;
+ int lastyi = yi;
+
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_row);
+ ScaleARGBFilterCols(rowptr, argb_cnv_row, dst_width, x, dx);
+
+ if (filtering == kFilterLinear) {
+ rowstride = 0;
+ }
+ // Prepare next row if necessary
+ if (filtering != kFilterLinear) {
+ if ((yi + 1) < src_height) {
+ iter.MoveToNextRow(iter);
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_row);
+ ScaleARGBFilterCols(rowptr + rowstride, argb_cnv_row, dst_width, x, dx);
+ }else {
+ rowstride = 0;
+ }
+ }
+
+ const int max_yi = src_height - 1;
+ for (j = 0; j < dst_height; ++j) {
+ yi = y >> 16;
+ if (yi != lastyi) {
+ if (y > max_y) {
+ y = max_y;
+ yi = y >> 16;
+ }
+ if (yi != lastyi) {
+ if (filtering == kFilterLinear) {
+ iter.MoveToNextRow(iter);
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_row);
+ ScaleARGBFilterCols(rowptr, argb_cnv_row, dst_width, x, dx);
+ } else {
+ // Prepare next row if necessary
+ if (yi < max_yi) {
+ iter.MoveToNextRow(iter);
+ rowptr += rowstride;
+ rowstride = -rowstride;
+ // TODO(fbarchard): Convert the clipped region of row.
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_row);
+ ScaleARGBFilterCols(rowptr + rowstride, argb_cnv_row, dst_width, x, dx);
+ } else {
+ rowstride = 0;
+ }
+ }
+ lastyi = yi;
+ }
+ }
+ 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);
+ free_aligned_buffer_64(argb_cnv_row);
+}
+
+// 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.
+
+static void ScaleYUVToARGBSimple(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,
+ uint32_t src_fourcc,
+ YUVColorSpace yuv_color_space) {
+ 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;
+
+ // Allocate 1 row of ARGB for source conversion.
+ align_buffer_64(argb_cnv_row, src_width * 4);
+
+#if defined(HAS_SCALEARGBCOLS_SSE2)
+ if (TestCpuFlag(kCpuHasSSE2) && src_width < 32768) {
+ ScaleARGBCols = ScaleARGBCols_SSE2;
+ }
+#endif
+#if defined(HAS_SCALEARGBCOLS_NEON)
+ if (TestCpuFlag(kCpuHasNEON)) {
+ ScaleARGBCols = ScaleARGBCols_Any_NEON;
+ if (IS_ALIGNED(dst_width, 8)) {
+ ScaleARGBCols = ScaleARGBCols_NEON;
+ }
+ }
+#endif
+ if (src_width * 2 == dst_width && x < 0x8000) {
+ ScaleARGBCols = ScaleARGBColsUp2_C;
+#if defined(HAS_SCALEARGBCOLSUP2_SSE2)
+ if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(dst_width, 8)) {
+ ScaleARGBCols = ScaleARGBColsUp2_SSE2;
+ }
+#endif
+ }
+
+ int yi = y >> 16;
+
+ YUVBuferIter iter;
+ iter.src_width = src_width;
+ iter.src_height = src_height;
+ iter.src_stride_y = src_stride_y;
+ iter.src_stride_u = src_stride_u;
+ iter.src_stride_v = src_stride_v;
+ iter.src_y = src_y;
+ iter.src_u = src_u;
+ iter.src_v = src_v;
+ YUVBuferIter_Init(iter, src_fourcc, yuv_color_space);
+ iter.MoveTo(iter, yi);
+
+ int lasty = yi;
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_row);
+
+ for (j = 0; j < dst_height; ++j) {
+ yi = y >> 16;
+ if (yi != lasty) {
+ iter.MoveTo(iter, yi);
+ YUVBuferIter_ConvertToARGBRow(iter, argb_cnv_row);
+ lasty = yi;
+ }
+ ScaleARGBCols(dst_argb, argb_cnv_row, dst_width, x, dx);
+ dst_argb += dst_stride_argb;
+ y += dy;
+ }
+ free_aligned_buffer_64(argb_cnv_row);
+}
+
+static void YUVToARGBCopy(const uint8_t* src_y, int src_stride_y,
+ const uint8_t* src_u, int src_stride_u,
+ const uint8_t* src_v, int src_stride_v,
+ int src_width, int src_height,
+ uint8_t* dst_argb, int dst_stride_argb,
+ int dst_width, int dst_height,
+ uint32_t src_fourcc,
+ YUVColorSpace yuv_color_space)
+{
+ YUVBuferIter iter;
+ iter.src_width = src_width;
+ iter.src_height = src_height;
+ iter.src_stride_y = src_stride_y;
+ iter.src_stride_u = src_stride_u;
+ iter.src_stride_v = src_stride_v;
+ iter.src_y = src_y;
+ iter.src_u = src_u;
+ iter.src_v = src_v;
+ YUVBuferIter_Init(iter, src_fourcc, yuv_color_space);
+
+ for (int j = 0; j < dst_height; ++j) {
+ YUVBuferIter_ConvertToARGBRow(iter, dst_argb);
+ iter.MoveToNextRow(iter);
+ dst_argb += dst_stride_argb;
+ }
+}
+
+static void ScaleYUVToARGB(const uint8_t* src_y, int src_stride_y,
+ const uint8_t* src_u, int src_stride_u,
+ const uint8_t* src_v, int src_stride_v,
+ int src_width, int src_height,
+ uint8_t* dst_argb, int dst_stride_argb,
+ int dst_width, int dst_height,
+ enum FilterMode filtering,
+ uint32_t src_fourcc,
+ YUVColorSpace yuv_color_space)
+{
+ // 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);
+ ScaleSlope(src_width, src_height, dst_width, dst_height, filtering,
+ &x, &y, &dx, &dy);
+
+ // Special case for integer step values.
+ if (((dx | dy) & 0xffff) == 0) {
+ if (!dx || !dy) { // 1 pixel wide and/or tall.
+ filtering = kFilterNone;
+ } else {
+ // Optimized even scale down. ie 2, 4, 6, 8, 10x.
+ if (!(dx & 0x10000) && !(dy & 0x10000)) {
+ if (dx == 0x20000) {
+ // Optimized 1/2 downsample.
+ ScaleYUVToARGBDown2(src_width, src_height,
+ dst_width, dst_height,
+ src_stride_y,
+ src_stride_u,
+ src_stride_v,
+ dst_stride_argb,
+ src_y,
+ src_u,
+ src_v,
+ dst_argb,
+ x, dx, y, dy,
+ filtering,
+ src_fourcc,
+ yuv_color_space);
+ return;
+ }
+ ScaleYUVToARGBDownEven(src_width, src_height,
+ dst_width, dst_height,
+ src_stride_y,
+ src_stride_u,
+ src_stride_v,
+ dst_stride_argb,
+ src_y,
+ src_u,
+ src_v,
+ dst_argb,
+ x, dx, y, dy,
+ filtering,
+ src_fourcc,
+ yuv_color_space);
+ return;
+ }
+ // Optimized odd scale down. ie 3, 5, 7, 9x.
+ if ((dx & 0x10000) && (dy & 0x10000)) {
+ filtering = kFilterNone;
+ if (dx == 0x10000 && dy == 0x10000) {
+ // Straight conversion and copy.
+ YUVToARGBCopy(src_y, src_stride_y,
+ src_u, src_stride_u,
+ src_v, src_stride_v,
+ src_width, src_height,
+ dst_argb, dst_stride_argb,
+ dst_width, dst_height,
+ src_fourcc,
+ yuv_color_space);
+ return;
+ }
+ }
+ }
+ }
+ if (filtering && dy < 65536) {
+ ScaleYUVToARGBBilinearUp(src_width, src_height,
+ dst_width, dst_height,
+ src_stride_y,
+ src_stride_u,
+ src_stride_v,
+ dst_stride_argb,
+ src_y,
+ src_u,
+ src_v,
+ dst_argb,
+ x, dx, y, dy,
+ filtering,
+ src_fourcc,
+ yuv_color_space);
+ return;
+ }
+ if (filtering) {
+ ScaleYUVToARGBBilinearDown(src_width, src_height,
+ dst_width, dst_height,
+ src_stride_y,
+ src_stride_u,
+ src_stride_v,
+ dst_stride_argb,
+ src_y,
+ src_u,
+ src_v,
+ dst_argb,
+ x, dx, y, dy,
+ filtering,
+ src_fourcc,
+ yuv_color_space);
+ return;
+ }
+ ScaleYUVToARGBSimple(src_width, src_height,
+ dst_width, dst_height,
+ src_stride_y,
+ src_stride_u,
+ src_stride_v,
+ dst_stride_argb,
+ src_y,
+ src_u,
+ src_v,
+ dst_argb,
+ x, dx, y, dy,
+ src_fourcc,
+ yuv_color_space);
+}
+
+bool IsConvertSupported(uint32_t src_fourcc)
+{
+ if (src_fourcc == FOURCC_I444 ||
+ src_fourcc == FOURCC_I422 ||
+ src_fourcc == FOURCC_I420) {
+ return true;
+ }
+ return false;
+}
+
+LIBYUV_API
+int YUVToARGBScale(const uint8_t* src_y, int src_stride_y,
+ const uint8_t* src_u, int src_stride_u,
+ const uint8_t* src_v, int src_stride_v,
+ uint32_t src_fourcc,
+ YUVColorSpace yuv_color_space,
+ int src_width, int src_height,
+ uint8_t* dst_argb, int dst_stride_argb,
+ int dst_width, int dst_height,
+ enum FilterMode filtering)
+{
+ if (!src_y || !src_u || !src_v ||
+ src_width == 0 || src_height == 0 ||
+ !dst_argb || dst_width <= 0 || dst_height <= 0) {
+ return -1;
+ }
+ if (!IsConvertSupported(src_fourcc)) {
+ return -1;
+ }
+ ScaleYUVToARGB(src_y, src_stride_y,
+ src_u, src_stride_u,
+ src_v, src_stride_v,
+ src_width, src_height,
+ dst_argb, dst_stride_argb,
+ dst_width, dst_height,
+ filtering,
+ src_fourcc,
+ yuv_color_space);
+ return 0;
+}
+
+#ifdef __cplusplus
+} // extern "C"
+} // namespace libyuv
+#endif