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gecko-dev/gfx/ycbcr/scale_yuv_argb.cpp
Jean-Yves Avenard 3ae43eb506 Bug 1493898 - P6. Move YUVColorSpace definition in the gfx namespace. r=mattwoodrow. 
YUVColorSpace is inseparable from the bit depth as the matrix coefficients to be calculated need the bit depth information.

So let's put the two types together. gfx namespace also makes more sense as that's where we find IntRect, IntSize and other.

The extent of the changes highlight how much similar data structures are duplicated across the code, to the point it's scary.

Differential Revision: https://phabricator.services.mozilla.com/D25347

--HG--
extra : moz-landing-system : lando
2019-04-11 12:41:33 +00:00

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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/cpu_id.h"
#include "libyuv/row.h"
#include "libyuv/scale_row.h"
#include "libyuv/video_common.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 modidying the
// libyuv's one. Then all another functions were implemented similarly.
//
// Function relationship between yuv_convert.cpp abd 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()
static __inline int Abs(int v) {
return v >= 0 ? v : -v;
}
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* src_y;
const uint8* src_u;
const uint8* src_v;
uint32 src_fourcc;
const struct YuvConstants* yuvconstants;
int y_index;
const uint8* src_row_y;
const uint8* src_row_u;
const uint8* src_row_v;
void (*YUVToARGBRow)(const uint8* y_buf,
const uint8* u_buf,
const uint8* v_buf,
uint8* 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* 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 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* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_argb,
int x, int dx, int y, int dy,
enum FilterMode filtering,
uint32 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* 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* src_argb, ptrdiff_t src_stride,
uint8* 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* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_argb,
int x, int dx, int y, int dy,
enum FilterMode filtering,
uint32 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* argb_cnv_rowptr = argb_cnv_row;
int argb_cnv_rowstride = kRowSize;
int col_step = dx >> 16;
void (*ScaleARGBRowDownEven)(const uint8* src_argb, ptrdiff_t src_stride,
int src_step, uint8* 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* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_argb,
int x, int dx, int y, int dy,
enum FilterMode filtering,
uint32 src_fourcc,
YUVColorSpace yuv_color_space) {
int j;
void (*InterpolateRow)(uint8* dst_argb, const uint8* src_argb,
ptrdiff_t src_stride, int dst_width, int source_y_fraction) =
InterpolateRow_C;
void (*ScaleARGBFilterCols)(uint8* dst_argb, const uint8* src_argb,
int dst_width, int x, int dx) =
(src_width >= 32768) ? ScaleARGBFilterCols64_C : ScaleARGBFilterCols_C;
int64 xlast = x + (int64)(dst_width - 1) * dx;
int64 xl = (dx >= 0) ? x : xlast;
int64 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* 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* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_argb,
int x, int dx, int y, int dy,
enum FilterMode filtering,
uint32 src_fourcc,
YUVColorSpace yuv_color_space) {
int j;
void (*InterpolateRow)(uint8* dst_argb, const uint8* src_argb,
ptrdiff_t src_stride, int dst_width, int source_y_fraction) =
InterpolateRow_C;
void (*ScaleARGBFilterCols)(uint8* dst_argb, const uint8* 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* 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* src_y,
const uint8* src_u,
const uint8* src_v,
uint8* dst_argb,
int x, int dx, int y, int dy,
uint32 src_fourcc,
YUVColorSpace yuv_color_space) {
int j;
void (*ScaleARGBCols)(uint8* dst_argb, const uint8* 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* 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_argb, int dst_stride_argb,
int dst_width, int dst_height,
uint32 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* 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_argb, int dst_stride_argb,
int dst_width, int dst_height,
enum FilterMode filtering,
uint32 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 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* src_y, int src_stride_y,
const uint8* src_u, int src_stride_u,
const uint8* src_v, int src_stride_v,
uint32 src_fourcc,
YUVColorSpace yuv_color_space,
int src_width, int src_height,
uint8* 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
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