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Add SplitUVPlanes and MergeUVPlanes

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Add public methods SplitUVPlanes and MergeUVPlanes based on the
optimized assembly functions that already exists. Also, de-duplicate the
CPU dispatching code for these functions by moving them to helper
functions.

BUG=libyuv:629
R=braveyao@chromium.org

Review URL: https://codereview.chromium.org/2277603004 .
This commit is contained in:
Frank Barchard 2016-08-24 16:47:24 -07:00
parent 161e5c4569
commit c244a3e9a0
6 changed files with 167 additions and 142 deletions
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2
README.chromium
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@ -1,6 +1,6 @@
Name: libyuv
URL: http://code.google.com/p/libyuv/
Version: 1613
Version: 1614
License: BSD
License File: LICENSE

14
include/libyuv/planar_functions.h
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@ -39,6 +39,20 @@ void SetPlane(uint8* dst_y, int dst_stride_y,
int width, int height,
uint32 value);
// Split interleaved UV plane into separate U and V planes.
LIBYUV_API
void SplitUVPlane(const uint8* src_uv, int src_stride_uv,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height);
// Merge separate U and V planes into one interleaved UV plane.
LIBYUV_API
void MergeUVPlane(const uint8* src_u, int src_stride_u,
const uint8* src_v, int src_stride_v,
uint8* dst_uv, int dst_stride_uv,
int width, int height);
// Copy I400. Supports inverting.
LIBYUV_API
int I400ToI400(const uint8* src_y, int src_stride_y,

2
include/libyuv/version.h
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@ -11,6 +11,6 @@
#ifndef INCLUDE_LIBYUV_VERSION_H_ // NOLINT
#define INCLUDE_LIBYUV_VERSION_H_
#define LIBYUV_VERSION 1613
#define LIBYUV_VERSION 1614
#endif // INCLUDE_LIBYUV_VERSION_H_ NOLINT

77
source/convert.cc
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@ -40,14 +40,14 @@ static int I4xxToI420(const uint8* src_y, int src_stride_y,
const int dst_y_height = Abs(src_y_height);
const int dst_uv_width = SUBSAMPLE(dst_y_width, 1, 1);
const int dst_uv_height = SUBSAMPLE(dst_y_height, 1, 1);
if (src_y_width == 0 || src_y_height == 0 ||
src_uv_width == 0 || src_uv_height == 0) {
if (src_uv_width == 0 || src_uv_height == 0) {
return -1;
}
// TODO(fbarchard): support NULL for dst_y
if (dst_y) {
ScalePlane(src_y, src_stride_y, src_y_width, src_y_height,
dst_y, dst_stride_y, dst_y_width, dst_y_height,
kFilterBilinear);
}
ScalePlane(src_u, src_stride_u, src_uv_width, src_uv_height,
dst_u, dst_stride_u, dst_uv_width, dst_uv_height,
kFilterBilinear);
@ -229,75 +229,6 @@ static void CopyPlane2(const uint8* src, int src_stride_0, int src_stride_1,
}
}
// Support function for NV12 etc UV channels.
// Width and height are plane sizes (typically half pixel width).
static void SplitUVPlane(const uint8* src_uv, int src_stride_uv,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int y;
void (*SplitUVRow)(const uint8* src_uv, uint8* dst_u, uint8* dst_v,
int width) = SplitUVRow_C;
// Negative height means invert the image.
if (height < 0) {
height = -height;
dst_u = dst_u + (height - 1) * dst_stride_u;
dst_v = dst_v + (height - 1) * dst_stride_v;
dst_stride_u = -dst_stride_u;
dst_stride_v = -dst_stride_v;
}
// Coalesce rows.
if (src_stride_uv == width * 2 &&
dst_stride_u == width &&
dst_stride_v == width) {
width *= height;
height = 1;
src_stride_uv = dst_stride_u = dst_stride_v = 0;
}
#if defined(HAS_SPLITUVROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2)) {
SplitUVRow = SplitUVRow_Any_SSE2;
if (IS_ALIGNED(width, 16)) {
SplitUVRow = SplitUVRow_SSE2;
}
}
#endif
#if defined(HAS_SPLITUVROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
SplitUVRow = SplitUVRow_Any_AVX2;
if (IS_ALIGNED(width, 32)) {
SplitUVRow = SplitUVRow_AVX2;
}
}
#endif
#if defined(HAS_SPLITUVROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
SplitUVRow = SplitUVRow_Any_NEON;
if (IS_ALIGNED(width, 16)) {
SplitUVRow = SplitUVRow_NEON;
}
}
#endif
#if defined(HAS_SPLITUVROW_DSPR2)
if (TestCpuFlag(kCpuHasDSPR2) &&
IS_ALIGNED(dst_u, 4) && IS_ALIGNED(dst_stride_u, 4) &&
IS_ALIGNED(dst_v, 4) && IS_ALIGNED(dst_stride_v, 4)) {
SplitUVRow = SplitUVRow_Any_DSPR2;
if (IS_ALIGNED(width, 16)) {
SplitUVRow = SplitUVRow_DSPR2;
}
}
#endif
for (y = 0; y < height; ++y) {
// Copy a row of UV.
SplitUVRow(src_uv, dst_u, dst_v, width);
dst_u += dst_stride_u;
dst_v += dst_stride_v;
src_uv += src_stride_uv;
}
}
// Support converting from FOURCC_M420
// Useful for bandwidth constrained transports like USB 1.0 and 2.0 and for
// easy conversion to I420.
@ -324,7 +255,9 @@ static int X420ToI420(const uint8* src_y,
if (height < 0) {
height = -height;
halfheight = (height + 1) >> 1;
if (dst_y) {
dst_y = dst_y + (height - 1) * dst_stride_y;
}
dst_u = dst_u + (halfheight - 1) * dst_stride_u;
dst_v = dst_v + (halfheight - 1) * dst_stride_v;
dst_stride_y = -dst_stride_y;

72
source/convert_from.cc
View File

@ -361,6 +361,7 @@ int I420ToUYVY(const uint8* src_y, int src_stride_y,
return 0;
}
// TODO(fbarchard): test negative height for invert.
LIBYUV_API
int I420ToNV12(const uint8* src_y, int src_stride_y,
const uint8* src_u, int src_stride_u,
@ -368,76 +369,19 @@ int I420ToNV12(const uint8* src_y, int src_stride_y,
uint8* dst_y, int dst_stride_y,
uint8* dst_uv, int dst_stride_uv,
int width, int height) {
int y;
void (*MergeUVRow_)(const uint8* src_u, const uint8* src_v, uint8* dst_uv,
int width) = MergeUVRow_C;
// Coalesce rows.
int halfwidth = (width + 1) >> 1;
int halfheight = (height + 1) >> 1;
if (!src_u || !src_v || !dst_uv ||
if (!src_y || !src_u || !src_v || !dst_y || !dst_uv ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
halfheight = (height + 1) >> 1;
if (dst_y) {
dst_y = dst_y + (height - 1) * dst_stride_y;
}
dst_uv = dst_uv + (halfheight - 1) * dst_stride_uv;
dst_stride_y = -dst_stride_y;
dst_stride_uv = -dst_stride_uv;
}
if (src_stride_y == width &&
dst_stride_y == width) {
width *= height;
height = 1;
src_stride_y = dst_stride_y = 0;
}
// Coalesce rows.
if (src_stride_u == halfwidth &&
src_stride_v == halfwidth &&
dst_stride_uv == halfwidth * 2) {
halfwidth *= halfheight;
halfheight = 1;
src_stride_u = src_stride_v = dst_stride_uv = 0;
}
#if defined(HAS_MERGEUVROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2)) {
MergeUVRow_ = MergeUVRow_Any_SSE2;
if (IS_ALIGNED(halfwidth, 16)) {
MergeUVRow_ = MergeUVRow_SSE2;
}
}
#endif
#if defined(HAS_MERGEUVROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
MergeUVRow_ = MergeUVRow_Any_AVX2;
if (IS_ALIGNED(halfwidth, 32)) {
MergeUVRow_ = MergeUVRow_AVX2;
}
}
#endif
#if defined(HAS_MERGEUVROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
MergeUVRow_ = MergeUVRow_Any_NEON;
if (IS_ALIGNED(halfwidth, 16)) {
MergeUVRow_ = MergeUVRow_NEON;
}
}
#endif
int halfwidth = (width + 1) / 2;
int halfheight = height > 0 ? (height + 1) / 2 : (height - 1) / 2;
if (dst_y) {
CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height);
}
for (y = 0; y < halfheight; ++y) {
// Merge a row of U and V into a row of UV.
MergeUVRow_(src_u, src_v, dst_uv, halfwidth);
src_u += src_stride_u;
src_v += src_stride_v;
dst_uv += dst_stride_uv;
}
MergeUVPlane(src_u, src_stride_u,
src_v, src_stride_v,
dst_uv, dst_stride_uv,
halfwidth, halfheight);
return 0;
}

134
source/planar_functions.cc
View File

@ -31,6 +31,12 @@ void CopyPlane(const uint8* src_y, int src_stride_y,
int width, int height) {
int y;
void (*CopyRow)(const uint8* src, uint8* dst, int width) = CopyRow_C;
// Negative height means invert the image.
if (height < 0) {
height = -height;
dst_y = dst_y + (height - 1) * dst_stride_y;
dst_stride_y = -dst_stride_y;
}
// Coalesce rows.
if (src_stride_y == width &&
dst_stride_y == width) {
@ -76,6 +82,7 @@ void CopyPlane(const uint8* src_y, int src_stride_y,
}
}
// TODO(fbarchard): Consider support for negative height.
LIBYUV_API
void CopyPlane_16(const uint16* src_y, int src_stride_y,
uint16* dst_y, int dst_stride_y,
@ -224,6 +231,133 @@ int I420ToI400(const uint8* src_y, int src_stride_y,
return 0;
}
// Support function for NV12 etc UV channels.
// Width and height are plane sizes (typically half pixel width).
LIBYUV_API
void SplitUVPlane(const uint8* src_uv, int src_stride_uv,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int y;
void (*SplitUVRow)(const uint8* src_uv, uint8* dst_u, uint8* dst_v,
int width) = SplitUVRow_C;
// Negative height means invert the image.
if (height < 0) {
height = -height;
dst_u = dst_u + (height - 1) * dst_stride_u;
dst_v = dst_v + (height - 1) * dst_stride_v;
dst_stride_u = -dst_stride_u;
dst_stride_v = -dst_stride_v;
}
// Coalesce rows.
if (src_stride_uv == width * 2 &&
dst_stride_u == width &&
dst_stride_v == width) {
width *= height;
height = 1;
src_stride_uv = dst_stride_u = dst_stride_v = 0;
}
#if defined(HAS_SPLITUVROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2)) {
SplitUVRow = SplitUVRow_Any_SSE2;
if (IS_ALIGNED(width, 16)) {
SplitUVRow = SplitUVRow_SSE2;
}
}
#endif
#if defined(HAS_SPLITUVROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
SplitUVRow = SplitUVRow_Any_AVX2;
if (IS_ALIGNED(width, 32)) {
SplitUVRow = SplitUVRow_AVX2;
}
}
#endif
#if defined(HAS_SPLITUVROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
SplitUVRow = SplitUVRow_Any_NEON;
if (IS_ALIGNED(width, 16)) {
SplitUVRow = SplitUVRow_NEON;
}
}
#endif
#if defined(HAS_SPLITUVROW_DSPR2)
if (TestCpuFlag(kCpuHasDSPR2) &&
IS_ALIGNED(dst_u, 4) && IS_ALIGNED(dst_stride_u, 4) &&
IS_ALIGNED(dst_v, 4) && IS_ALIGNED(dst_stride_v, 4)) {
SplitUVRow = SplitUVRow_Any_DSPR2;
if (IS_ALIGNED(width, 16)) {
SplitUVRow = SplitUVRow_DSPR2;
}
}
#endif
for (y = 0; y < height; ++y) {
// Copy a row of UV.
SplitUVRow(src_uv, dst_u, dst_v, width);
dst_u += dst_stride_u;
dst_v += dst_stride_v;
src_uv += src_stride_uv;
}
}
LIBYUV_API
void MergeUVPlane(const uint8* src_u, int src_stride_u,
const uint8* src_v, int src_stride_v,
uint8* dst_uv, int dst_stride_uv,
int width, int height) {
int y;
void (*MergeUVRow)(const uint8* src_u, const uint8* src_v, uint8* dst_uv,
int width) = MergeUVRow_C;
// Coalesce rows.
// Negative height means invert the image.
if (height < 0) {
height = -height;
dst_uv = dst_uv + (height - 1) * dst_stride_uv;
dst_stride_uv = -dst_stride_uv;
}
// Coalesce rows.
if (src_stride_u == width &&
src_stride_v == width &&
dst_stride_uv == width * 2) {
width *= height;
height = 1;
src_stride_u = src_stride_v = dst_stride_uv = 0;
}
#if defined(HAS_MERGEUVROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2)) {
MergeUVRow = MergeUVRow_Any_SSE2;
if (IS_ALIGNED(width, 16)) {
MergeUVRow = MergeUVRow_SSE2;
}
}
#endif
#if defined(HAS_MERGEUVROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
MergeUVRow = MergeUVRow_Any_AVX2;
if (IS_ALIGNED(width, 32)) {
MergeUVRow = MergeUVRow_AVX2;
}
}
#endif
#if defined(HAS_MERGEUVROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
MergeUVRow = MergeUVRow_Any_NEON;
if (IS_ALIGNED(width, 16)) {
MergeUVRow = MergeUVRow_NEON;
}
}
#endif
for (y = 0; y < height; ++y) {
// Merge a row of U and V into a row of UV.
MergeUVRow(src_u, src_v, dst_uv, width);
src_u += src_stride_u;
src_v += src_stride_v;
dst_uv += dst_stride_uv;
}
}
// Mirror a plane of data.
void MirrorPlane(const uint8* src_y, int src_stride_y,
uint8* dst_y, int dst_stride_y,