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Commit 02836484 authored by fbarchard@google.com's avatar fbarchard@google.com
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ARGB Scale ported to C 

BUG=303
TESTED=cl /c /TC /Iinclude source/scale_argb.cc
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/7169004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@972 16f28f9a-4ce2-e073-06de-1de4eb20be90
parent d3f1821b
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Showing with 66 additions and 58 deletions
README.chromium
View file @ 02836484
Name: libyuv
URL: http://code.google.com/p/libyuv/
Version: 971
Version: 972
License: BSD
License File: LICENSE
......
include/libyuv/version.h
View file @ 02836484
......@@ -11,6 +11,6 @@
#ifndef INCLUDE_LIBYUV_VERSION_H_ // NOLINT
#define INCLUDE_LIBYUV_VERSION_H_
#define LIBYUV_VERSION 971
#define LIBYUV_VERSION 972
#endif // INCLUDE_LIBYUV_VERSION_H_ NOLINT
source/scale_argb.cc
View file @ 02836484
......@@ -170,6 +170,12 @@ static void ScaleARGBBilinearDown(int src_width, int src_height,
int x, int dx, int y, int dy,
enum FilterMode filtering) {
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;
......@@ -179,9 +185,6 @@ static void ScaleARGBBilinearDown(int src_width, int src_height,
clip_src_width = (((xr - xl) + 1 + 3) & ~3) * 4; // Width aligned to 4.
src_argb += xl * 4;
x -= (int)(xl << 16);
void (*InterpolateRow)(uint8* dst_argb, const uint8* src_argb,
ptrdiff_t src_stride, int dst_width, int source_y_fraction) =
InterpolateRow_C;
#if defined(HAS_INTERPOLATEROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2) && clip_src_width >= 16) {
InterpolateRow = InterpolateRow_Any_SSE2;
......@@ -229,9 +232,6 @@ static void ScaleARGBBilinearDown(int src_width, int src_height,
}
}
#endif
void (*ScaleARGBFilterCols)(uint8* dst_argb, const uint8* src_argb,
int dst_width, int x, int dx) =
(src_width >= 32768) ? ScaleARGBFilterCols64_C : ScaleARGBFilterCols_C;
#if defined(HAS_SCALEARGBFILTERCOLS_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3) && src_width < 32768) {
ScaleARGBFilterCols = ScaleARGBFilterCols_SSSE3;
......@@ -239,26 +239,31 @@ static void ScaleARGBBilinearDown(int src_width, int src_height,
#endif
// TODO(fbarchard): Consider not allocating row buffer for kFilterLinear.
// Allocate a row of ARGB.
align_buffer_64(row, clip_src_width * 4);
{
align_buffer_64(row, clip_src_width * 4);
const int max_y = (src_height - 1) << 16;
for (j = 0; j < dst_height; ++j) {
const int max_y = (src_height - 1) << 16;
if (y > max_y) {
y = max_y;
}
int yi = y >> 16;
const uint8* src = src_argb + yi * 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);
for (j = 0; j < dst_height; ++j) {
int yi = y >> 16;
const uint8* src = src_argb + yi * 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;
}
}
dst_argb += dst_stride;
y += dy;
free_aligned_buffer_64(row);
}
free_aligned_buffer_64(row);
}
// Scale ARGB up with bilinear interpolation.
......@@ -275,6 +280,7 @@ static void ScaleARGBBilinearUp(int src_width, int src_height,
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;
#if defined(HAS_INTERPOLATEROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2) && dst_width >= 4) {
InterpolateRow = InterpolateRow_Any_SSE2;
......@@ -344,54 +350,56 @@ static void ScaleARGBBilinearUp(int src_width, int src_height,
#endif
}
const int max_y = (src_height - 1) << 16;
if (y > max_y) {
y = max_y;
}
int yi = y >> 16;
const uint8* src = src_argb + yi * src_stride;
// Allocate 2 rows of ARGB.
const int kRowSize = (dst_width * 4 + 15) & ~15;
align_buffer_64(row, kRowSize * 2);
{
int yi = y >> 16;
const uint8* src = src_argb + yi * src_stride;
uint8* rowptr = row;
int rowstride = kRowSize;
int lasty = yi;
// Allocate 2 rows of ARGB.
const int kRowSize = (dst_width * 4 + 15) & ~15;
align_buffer_64(row, kRowSize * 2);
ScaleARGBFilterCols(rowptr, src, dst_width, x, dx);
if (src_height > 1) {
uint8* rowptr = row;
int rowstride = kRowSize;
int lasty = yi;
ScaleARGBFilterCols(rowptr, src, dst_width, x, dx);
if (src_height > 1) {
src += src_stride;
}
ScaleARGBFilterCols(rowptr + rowstride, src, dst_width, x, dx);
src += src_stride;
}
ScaleARGBFilterCols(rowptr + rowstride, src, dst_width, x, dx);
src += src_stride;
for (j = 0; j < dst_height; ++j) {
yi = y >> 16;
if (yi != lasty) {
if (y > max_y) {
y = max_y;
yi = y >> 16;
src = src_argb + yi * src_stride;
}
for (j = 0; j < dst_height; ++j) {
yi = y >> 16;
if (yi != lasty) {
ScaleARGBFilterCols(rowptr, src, dst_width, x, dx);
rowptr += rowstride;
rowstride = -rowstride;
lasty = yi;
src += src_stride;
if (y > max_y) {
y = max_y;
yi = y >> 16;
src = src_argb + yi * src_stride;
}
if (yi != lasty) {
ScaleARGBFilterCols(rowptr, src, dst_width, x, dx);
rowptr += rowstride;
rowstride = -rowstride;
lasty = yi;
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;
}
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);
}
free_aligned_buffer_64(row);
}
#ifdef YUVSCALEUP
......
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