ref: 4a20caef7851a07f2a3864faaaa522c1a9282e9e
dir: /third_party/libyuv/source/convert.cc/
/*
* 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.
*/
#include "libyuv/convert.h"
#include "libyuv/basic_types.h"
#include "libyuv/cpu_id.h"
#include "libyuv/planar_functions.h"
#include "libyuv/rotate.h"
#include "libyuv/scale.h" // For ScalePlane()
#include "libyuv/row.h"
#ifdef __cplusplus
namespace libyuv {
extern "C" {
#endif
#define SUBSAMPLE(v, a, s) (v < 0) ? (-((-v + a) >> s)) : ((v + a) >> s)
static __inline int Abs(int v) {
return v >= 0 ? v : -v;
}
// Any I4xx To I420 format with mirroring.
static int I4xxToI420(const uint8* src_y, int src_stride_y,
const uint8* src_u, int src_stride_u,
const uint8* src_v, int src_stride_v,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int src_y_width, int src_y_height,
int src_uv_width, int src_uv_height) {
const int dst_y_width = Abs(src_y_width);
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_uv_width == 0 || src_uv_height == 0) {
return -1;
}
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);
ScalePlane(src_v, src_stride_v, src_uv_width, src_uv_height,
dst_v, dst_stride_v, dst_uv_width, dst_uv_height,
kFilterBilinear);
return 0;
}
// Copy I420 with optional flipping
// TODO(fbarchard): Use Scale plane which supports mirroring, but ensure
// is does row coalescing.
LIBYUV_API
int I420Copy(const uint8* src_y, int src_stride_y,
const uint8* src_u, int src_stride_u,
const uint8* src_v, int src_stride_v,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int halfwidth = (width + 1) >> 1;
int halfheight = (height + 1) >> 1;
if (!src_u || !src_v ||
!dst_u || !dst_v ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
halfheight = (height + 1) >> 1;
src_y = src_y + (height - 1) * src_stride_y;
src_u = src_u + (halfheight - 1) * src_stride_u;
src_v = src_v + (halfheight - 1) * src_stride_v;
src_stride_y = -src_stride_y;
src_stride_u = -src_stride_u;
src_stride_v = -src_stride_v;
}
if (dst_y) {
CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height);
}
// Copy UV planes.
CopyPlane(src_u, src_stride_u, dst_u, dst_stride_u, halfwidth, halfheight);
CopyPlane(src_v, src_stride_v, dst_v, dst_stride_v, halfwidth, halfheight);
return 0;
}
// 422 chroma is 1/2 width, 1x height
// 420 chroma is 1/2 width, 1/2 height
LIBYUV_API
int I422ToI420(const uint8* src_y, int src_stride_y,
const uint8* src_u, int src_stride_u,
const uint8* src_v, int src_stride_v,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
const int src_uv_width = SUBSAMPLE(width, 1, 1);
return I4xxToI420(src_y, src_stride_y,
src_u, src_stride_u,
src_v, src_stride_v,
dst_y, dst_stride_y,
dst_u, dst_stride_u,
dst_v, dst_stride_v,
width, height,
src_uv_width, height);
}
// 444 chroma is 1x width, 1x height
// 420 chroma is 1/2 width, 1/2 height
LIBYUV_API
int I444ToI420(const uint8* src_y, int src_stride_y,
const uint8* src_u, int src_stride_u,
const uint8* src_v, int src_stride_v,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
return I4xxToI420(src_y, src_stride_y,
src_u, src_stride_u,
src_v, src_stride_v,
dst_y, dst_stride_y,
dst_u, dst_stride_u,
dst_v, dst_stride_v,
width, height,
width, height);
}
// 411 chroma is 1/4 width, 1x height
// 420 chroma is 1/2 width, 1/2 height
LIBYUV_API
int I411ToI420(const uint8* src_y, int src_stride_y,
const uint8* src_u, int src_stride_u,
const uint8* src_v, int src_stride_v,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
const int src_uv_width = SUBSAMPLE(width, 3, 2);
return I4xxToI420(src_y, src_stride_y,
src_u, src_stride_u,
src_v, src_stride_v,
dst_y, dst_stride_y,
dst_u, dst_stride_u,
dst_v, dst_stride_v,
width, height,
src_uv_width, height);
}
// I400 is greyscale typically used in MJPG
LIBYUV_API
int I400ToI420(const uint8* src_y, int src_stride_y,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int halfwidth = (width + 1) >> 1;
int halfheight = (height + 1) >> 1;
if (!dst_u || !dst_v ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
halfheight = (height + 1) >> 1;
src_y = src_y + (height - 1) * src_stride_y;
src_stride_y = -src_stride_y;
}
if (dst_y) {
CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height);
}
SetPlane(dst_u, dst_stride_u, halfwidth, halfheight, 128);
SetPlane(dst_v, dst_stride_v, halfwidth, halfheight, 128);
return 0;
}
static void CopyPlane2(const uint8* src, int src_stride_0, int src_stride_1,
uint8* dst, int dst_stride,
int width, int height) {
int y;
void (*CopyRow)(const uint8* src, uint8* dst, int width) = CopyRow_C;
#if defined(HAS_COPYROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2)) {
CopyRow = IS_ALIGNED(width, 32) ? CopyRow_SSE2 : CopyRow_Any_SSE2;
}
#endif
#if defined(HAS_COPYROW_AVX)
if (TestCpuFlag(kCpuHasAVX)) {
CopyRow = IS_ALIGNED(width, 64) ? CopyRow_AVX : CopyRow_Any_AVX;
}
#endif
#if defined(HAS_COPYROW_ERMS)
if (TestCpuFlag(kCpuHasERMS)) {
CopyRow = CopyRow_ERMS;
}
#endif
#if defined(HAS_COPYROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
CopyRow = IS_ALIGNED(width, 32) ? CopyRow_NEON : CopyRow_Any_NEON;
}
#endif
#if defined(HAS_COPYROW_MIPS)
if (TestCpuFlag(kCpuHasMIPS)) {
CopyRow = CopyRow_MIPS;
}
#endif
// Copy plane
for (y = 0; y < height - 1; y += 2) {
CopyRow(src, dst, width);
CopyRow(src + src_stride_0, dst + dst_stride, width);
src += src_stride_0 + src_stride_1;
dst += dst_stride * 2;
}
if (height & 1) {
CopyRow(src, dst, width);
}
}
// Support converting from FOURCC_M420
// Useful for bandwidth constrained transports like USB 1.0 and 2.0 and for
// easy conversion to I420.
// M420 format description:
// M420 is row biplanar 420: 2 rows of Y and 1 row of UV.
// Chroma is half width / half height. (420)
// src_stride_m420 is row planar. Normally this will be the width in pixels.
// The UV plane is half width, but 2 values, so src_stride_m420 applies to
// this as well as the two Y planes.
static int X420ToI420(const uint8* src_y,
int src_stride_y0, int src_stride_y1,
const uint8* src_uv, int src_stride_uv,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int halfwidth = (width + 1) >> 1;
int halfheight = (height + 1) >> 1;
if (!src_uv || !dst_u || !dst_v ||
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_u = dst_u + (halfheight - 1) * dst_stride_u;
dst_v = dst_v + (halfheight - 1) * dst_stride_v;
dst_stride_y = -dst_stride_y;
dst_stride_u = -dst_stride_u;
dst_stride_v = -dst_stride_v;
}
// Coalesce rows.
if (src_stride_y0 == width &&
src_stride_y1 == width &&
dst_stride_y == width) {
width *= height;
height = 1;
src_stride_y0 = src_stride_y1 = dst_stride_y = 0;
}
// Coalesce rows.
if (src_stride_uv == halfwidth * 2 &&
dst_stride_u == halfwidth &&
dst_stride_v == halfwidth) {
halfwidth *= halfheight;
halfheight = 1;
src_stride_uv = dst_stride_u = dst_stride_v = 0;
}
if (dst_y) {
if (src_stride_y0 == src_stride_y1) {
CopyPlane(src_y, src_stride_y0, dst_y, dst_stride_y, width, height);
} else {
CopyPlane2(src_y, src_stride_y0, src_stride_y1, dst_y, dst_stride_y,
width, height);
}
}
// Split UV plane - NV12 / NV21
SplitUVPlane(src_uv, src_stride_uv, dst_u, dst_stride_u, dst_v, dst_stride_v,
halfwidth, halfheight);
return 0;
}
// Convert NV12 to I420.
LIBYUV_API
int NV12ToI420(const uint8* src_y, int src_stride_y,
const uint8* src_uv, int src_stride_uv,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
return X420ToI420(src_y, src_stride_y, src_stride_y,
src_uv, src_stride_uv,
dst_y, dst_stride_y,
dst_u, dst_stride_u,
dst_v, dst_stride_v,
width, height);
}
// Convert NV21 to I420. Same as NV12 but u and v pointers swapped.
LIBYUV_API
int NV21ToI420(const uint8* src_y, int src_stride_y,
const uint8* src_vu, int src_stride_vu,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
return X420ToI420(src_y, src_stride_y, src_stride_y,
src_vu, src_stride_vu,
dst_y, dst_stride_y,
dst_v, dst_stride_v,
dst_u, dst_stride_u,
width, height);
}
// Convert M420 to I420.
LIBYUV_API
int M420ToI420(const uint8* src_m420, int src_stride_m420,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
return X420ToI420(src_m420, src_stride_m420, src_stride_m420 * 2,
src_m420 + src_stride_m420 * 2, src_stride_m420 * 3,
dst_y, dst_stride_y,
dst_u, dst_stride_u,
dst_v, dst_stride_v,
width, height);
}
// Convert YUY2 to I420.
LIBYUV_API
int YUY2ToI420(const uint8* src_yuy2, int src_stride_yuy2,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int y;
void (*YUY2ToUVRow)(const uint8* src_yuy2, int src_stride_yuy2,
uint8* dst_u, uint8* dst_v, int width) = YUY2ToUVRow_C;
void (*YUY2ToYRow)(const uint8* src_yuy2,
uint8* dst_y, int width) = YUY2ToYRow_C;
// Negative height means invert the image.
if (height < 0) {
height = -height;
src_yuy2 = src_yuy2 + (height - 1) * src_stride_yuy2;
src_stride_yuy2 = -src_stride_yuy2;
}
#if defined(HAS_YUY2TOYROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2)) {
YUY2ToUVRow = YUY2ToUVRow_Any_SSE2;
YUY2ToYRow = YUY2ToYRow_Any_SSE2;
if (IS_ALIGNED(width, 16)) {
YUY2ToUVRow = YUY2ToUVRow_SSE2;
YUY2ToYRow = YUY2ToYRow_SSE2;
}
}
#endif
#if defined(HAS_YUY2TOYROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
YUY2ToUVRow = YUY2ToUVRow_Any_AVX2;
YUY2ToYRow = YUY2ToYRow_Any_AVX2;
if (IS_ALIGNED(width, 32)) {
YUY2ToUVRow = YUY2ToUVRow_AVX2;
YUY2ToYRow = YUY2ToYRow_AVX2;
}
}
#endif
#if defined(HAS_YUY2TOYROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
YUY2ToYRow = YUY2ToYRow_Any_NEON;
YUY2ToUVRow = YUY2ToUVRow_Any_NEON;
if (IS_ALIGNED(width, 16)) {
YUY2ToYRow = YUY2ToYRow_NEON;
YUY2ToUVRow = YUY2ToUVRow_NEON;
}
}
#endif
for (y = 0; y < height - 1; y += 2) {
YUY2ToUVRow(src_yuy2, src_stride_yuy2, dst_u, dst_v, width);
YUY2ToYRow(src_yuy2, dst_y, width);
YUY2ToYRow(src_yuy2 + src_stride_yuy2, dst_y + dst_stride_y, width);
src_yuy2 += src_stride_yuy2 * 2;
dst_y += dst_stride_y * 2;
dst_u += dst_stride_u;
dst_v += dst_stride_v;
}
if (height & 1) {
YUY2ToUVRow(src_yuy2, 0, dst_u, dst_v, width);
YUY2ToYRow(src_yuy2, dst_y, width);
}
return 0;
}
// Convert UYVY to I420.
LIBYUV_API
int UYVYToI420(const uint8* src_uyvy, int src_stride_uyvy,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int y;
void (*UYVYToUVRow)(const uint8* src_uyvy, int src_stride_uyvy,
uint8* dst_u, uint8* dst_v, int width) = UYVYToUVRow_C;
void (*UYVYToYRow)(const uint8* src_uyvy,
uint8* dst_y, int width) = UYVYToYRow_C;
// Negative height means invert the image.
if (height < 0) {
height = -height;
src_uyvy = src_uyvy + (height - 1) * src_stride_uyvy;
src_stride_uyvy = -src_stride_uyvy;
}
#if defined(HAS_UYVYTOYROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2)) {
UYVYToUVRow = UYVYToUVRow_Any_SSE2;
UYVYToYRow = UYVYToYRow_Any_SSE2;
if (IS_ALIGNED(width, 16)) {
UYVYToUVRow = UYVYToUVRow_SSE2;
UYVYToYRow = UYVYToYRow_SSE2;
}
}
#endif
#if defined(HAS_UYVYTOYROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
UYVYToUVRow = UYVYToUVRow_Any_AVX2;
UYVYToYRow = UYVYToYRow_Any_AVX2;
if (IS_ALIGNED(width, 32)) {
UYVYToUVRow = UYVYToUVRow_AVX2;
UYVYToYRow = UYVYToYRow_AVX2;
}
}
#endif
#if defined(HAS_UYVYTOYROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
UYVYToYRow = UYVYToYRow_Any_NEON;
UYVYToUVRow = UYVYToUVRow_Any_NEON;
if (IS_ALIGNED(width, 16)) {
UYVYToYRow = UYVYToYRow_NEON;
UYVYToUVRow = UYVYToUVRow_NEON;
}
}
#endif
for (y = 0; y < height - 1; y += 2) {
UYVYToUVRow(src_uyvy, src_stride_uyvy, dst_u, dst_v, width);
UYVYToYRow(src_uyvy, dst_y, width);
UYVYToYRow(src_uyvy + src_stride_uyvy, dst_y + dst_stride_y, width);
src_uyvy += src_stride_uyvy * 2;
dst_y += dst_stride_y * 2;
dst_u += dst_stride_u;
dst_v += dst_stride_v;
}
if (height & 1) {
UYVYToUVRow(src_uyvy, 0, dst_u, dst_v, width);
UYVYToYRow(src_uyvy, dst_y, width);
}
return 0;
}
// Convert ARGB to I420.
LIBYUV_API
int ARGBToI420(const uint8* src_argb, int src_stride_argb,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int y;
void (*ARGBToUVRow)(const uint8* src_argb0, int src_stride_argb,
uint8* dst_u, uint8* dst_v, int width) = ARGBToUVRow_C;
void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int width) =
ARGBToYRow_C;
if (!src_argb ||
!dst_y || !dst_u || !dst_v ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
src_argb = src_argb + (height - 1) * src_stride_argb;
src_stride_argb = -src_stride_argb;
}
#if defined(HAS_ARGBTOYROW_SSSE3) && defined(HAS_ARGBTOUVROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
ARGBToUVRow = ARGBToUVRow_Any_SSSE3;
ARGBToYRow = ARGBToYRow_Any_SSSE3;
if (IS_ALIGNED(width, 16)) {
ARGBToUVRow = ARGBToUVRow_SSSE3;
ARGBToYRow = ARGBToYRow_SSSE3;
}
}
#endif
#if defined(HAS_ARGBTOYROW_AVX2) && defined(HAS_ARGBTOUVROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
ARGBToUVRow = ARGBToUVRow_Any_AVX2;
ARGBToYRow = ARGBToYRow_Any_AVX2;
if (IS_ALIGNED(width, 32)) {
ARGBToUVRow = ARGBToUVRow_AVX2;
ARGBToYRow = ARGBToYRow_AVX2;
}
}
#endif
#if defined(HAS_ARGBTOYROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
ARGBToYRow = ARGBToYRow_Any_NEON;
if (IS_ALIGNED(width, 8)) {
ARGBToYRow = ARGBToYRow_NEON;
}
}
#endif
#if defined(HAS_ARGBTOUVROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
ARGBToUVRow = ARGBToUVRow_Any_NEON;
if (IS_ALIGNED(width, 16)) {
ARGBToUVRow = ARGBToUVRow_NEON;
}
}
#endif
for (y = 0; y < height - 1; y += 2) {
ARGBToUVRow(src_argb, src_stride_argb, dst_u, dst_v, width);
ARGBToYRow(src_argb, dst_y, width);
ARGBToYRow(src_argb + src_stride_argb, dst_y + dst_stride_y, width);
src_argb += src_stride_argb * 2;
dst_y += dst_stride_y * 2;
dst_u += dst_stride_u;
dst_v += dst_stride_v;
}
if (height & 1) {
ARGBToUVRow(src_argb, 0, dst_u, dst_v, width);
ARGBToYRow(src_argb, dst_y, width);
}
return 0;
}
// Convert BGRA to I420.
LIBYUV_API
int BGRAToI420(const uint8* src_bgra, int src_stride_bgra,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int y;
void (*BGRAToUVRow)(const uint8* src_bgra0, int src_stride_bgra,
uint8* dst_u, uint8* dst_v, int width) = BGRAToUVRow_C;
void (*BGRAToYRow)(const uint8* src_bgra, uint8* dst_y, int width) =
BGRAToYRow_C;
if (!src_bgra ||
!dst_y || !dst_u || !dst_v ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
src_bgra = src_bgra + (height - 1) * src_stride_bgra;
src_stride_bgra = -src_stride_bgra;
}
#if defined(HAS_BGRATOYROW_SSSE3) && defined(HAS_BGRATOUVROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
BGRAToUVRow = BGRAToUVRow_Any_SSSE3;
BGRAToYRow = BGRAToYRow_Any_SSSE3;
if (IS_ALIGNED(width, 16)) {
BGRAToUVRow = BGRAToUVRow_SSSE3;
BGRAToYRow = BGRAToYRow_SSSE3;
}
}
#endif
#if defined(HAS_BGRATOYROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
BGRAToYRow = BGRAToYRow_Any_NEON;
if (IS_ALIGNED(width, 8)) {
BGRAToYRow = BGRAToYRow_NEON;
}
}
#endif
#if defined(HAS_BGRATOUVROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
BGRAToUVRow = BGRAToUVRow_Any_NEON;
if (IS_ALIGNED(width, 16)) {
BGRAToUVRow = BGRAToUVRow_NEON;
}
}
#endif
for (y = 0; y < height - 1; y += 2) {
BGRAToUVRow(src_bgra, src_stride_bgra, dst_u, dst_v, width);
BGRAToYRow(src_bgra, dst_y, width);
BGRAToYRow(src_bgra + src_stride_bgra, dst_y + dst_stride_y, width);
src_bgra += src_stride_bgra * 2;
dst_y += dst_stride_y * 2;
dst_u += dst_stride_u;
dst_v += dst_stride_v;
}
if (height & 1) {
BGRAToUVRow(src_bgra, 0, dst_u, dst_v, width);
BGRAToYRow(src_bgra, dst_y, width);
}
return 0;
}
// Convert ABGR to I420.
LIBYUV_API
int ABGRToI420(const uint8* src_abgr, int src_stride_abgr,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int y;
void (*ABGRToUVRow)(const uint8* src_abgr0, int src_stride_abgr,
uint8* dst_u, uint8* dst_v, int width) = ABGRToUVRow_C;
void (*ABGRToYRow)(const uint8* src_abgr, uint8* dst_y, int width) =
ABGRToYRow_C;
if (!src_abgr ||
!dst_y || !dst_u || !dst_v ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
src_abgr = src_abgr + (height - 1) * src_stride_abgr;
src_stride_abgr = -src_stride_abgr;
}
#if defined(HAS_ABGRTOYROW_SSSE3) && defined(HAS_ABGRTOUVROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
ABGRToUVRow = ABGRToUVRow_Any_SSSE3;
ABGRToYRow = ABGRToYRow_Any_SSSE3;
if (IS_ALIGNED(width, 16)) {
ABGRToUVRow = ABGRToUVRow_SSSE3;
ABGRToYRow = ABGRToYRow_SSSE3;
}
}
#endif
#if defined(HAS_ABGRTOYROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
ABGRToYRow = ABGRToYRow_Any_NEON;
if (IS_ALIGNED(width, 8)) {
ABGRToYRow = ABGRToYRow_NEON;
}
}
#endif
#if defined(HAS_ABGRTOUVROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
ABGRToUVRow = ABGRToUVRow_Any_NEON;
if (IS_ALIGNED(width, 16)) {
ABGRToUVRow = ABGRToUVRow_NEON;
}
}
#endif
for (y = 0; y < height - 1; y += 2) {
ABGRToUVRow(src_abgr, src_stride_abgr, dst_u, dst_v, width);
ABGRToYRow(src_abgr, dst_y, width);
ABGRToYRow(src_abgr + src_stride_abgr, dst_y + dst_stride_y, width);
src_abgr += src_stride_abgr * 2;
dst_y += dst_stride_y * 2;
dst_u += dst_stride_u;
dst_v += dst_stride_v;
}
if (height & 1) {
ABGRToUVRow(src_abgr, 0, dst_u, dst_v, width);
ABGRToYRow(src_abgr, dst_y, width);
}
return 0;
}
// Convert RGBA to I420.
LIBYUV_API
int RGBAToI420(const uint8* src_rgba, int src_stride_rgba,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int y;
void (*RGBAToUVRow)(const uint8* src_rgba0, int src_stride_rgba,
uint8* dst_u, uint8* dst_v, int width) = RGBAToUVRow_C;
void (*RGBAToYRow)(const uint8* src_rgba, uint8* dst_y, int width) =
RGBAToYRow_C;
if (!src_rgba ||
!dst_y || !dst_u || !dst_v ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
src_rgba = src_rgba + (height - 1) * src_stride_rgba;
src_stride_rgba = -src_stride_rgba;
}
#if defined(HAS_RGBATOYROW_SSSE3) && defined(HAS_RGBATOUVROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
RGBAToUVRow = RGBAToUVRow_Any_SSSE3;
RGBAToYRow = RGBAToYRow_Any_SSSE3;
if (IS_ALIGNED(width, 16)) {
RGBAToUVRow = RGBAToUVRow_SSSE3;
RGBAToYRow = RGBAToYRow_SSSE3;
}
}
#endif
#if defined(HAS_RGBATOYROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
RGBAToYRow = RGBAToYRow_Any_NEON;
if (IS_ALIGNED(width, 8)) {
RGBAToYRow = RGBAToYRow_NEON;
}
}
#endif
#if defined(HAS_RGBATOUVROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
RGBAToUVRow = RGBAToUVRow_Any_NEON;
if (IS_ALIGNED(width, 16)) {
RGBAToUVRow = RGBAToUVRow_NEON;
}
}
#endif
for (y = 0; y < height - 1; y += 2) {
RGBAToUVRow(src_rgba, src_stride_rgba, dst_u, dst_v, width);
RGBAToYRow(src_rgba, dst_y, width);
RGBAToYRow(src_rgba + src_stride_rgba, dst_y + dst_stride_y, width);
src_rgba += src_stride_rgba * 2;
dst_y += dst_stride_y * 2;
dst_u += dst_stride_u;
dst_v += dst_stride_v;
}
if (height & 1) {
RGBAToUVRow(src_rgba, 0, dst_u, dst_v, width);
RGBAToYRow(src_rgba, dst_y, width);
}
return 0;
}
// Convert RGB24 to I420.
LIBYUV_API
int RGB24ToI420(const uint8* src_rgb24, int src_stride_rgb24,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int y;
#if defined(HAS_RGB24TOYROW_NEON)
void (*RGB24ToUVRow)(const uint8* src_rgb24, int src_stride_rgb24,
uint8* dst_u, uint8* dst_v, int width) = RGB24ToUVRow_C;
void (*RGB24ToYRow)(const uint8* src_rgb24, uint8* dst_y, int width) =
RGB24ToYRow_C;
#else
void (*RGB24ToARGBRow)(const uint8* src_rgb, uint8* dst_argb, int width) =
RGB24ToARGBRow_C;
void (*ARGBToUVRow)(const uint8* src_argb0, int src_stride_argb,
uint8* dst_u, uint8* dst_v, int width) = ARGBToUVRow_C;
void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int width) =
ARGBToYRow_C;
#endif
if (!src_rgb24 || !dst_y || !dst_u || !dst_v ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
src_rgb24 = src_rgb24 + (height - 1) * src_stride_rgb24;
src_stride_rgb24 = -src_stride_rgb24;
}
// Neon version does direct RGB24 to YUV.
#if defined(HAS_RGB24TOYROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
RGB24ToUVRow = RGB24ToUVRow_Any_NEON;
RGB24ToYRow = RGB24ToYRow_Any_NEON;
if (IS_ALIGNED(width, 8)) {
RGB24ToYRow = RGB24ToYRow_NEON;
if (IS_ALIGNED(width, 16)) {
RGB24ToUVRow = RGB24ToUVRow_NEON;
}
}
}
// Other platforms do intermediate conversion from RGB24 to ARGB.
#else
#if defined(HAS_RGB24TOARGBROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
RGB24ToARGBRow = RGB24ToARGBRow_Any_SSSE3;
if (IS_ALIGNED(width, 16)) {
RGB24ToARGBRow = RGB24ToARGBRow_SSSE3;
}
}
#endif
#if defined(HAS_ARGBTOYROW_SSSE3) && defined(HAS_ARGBTOUVROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
ARGBToUVRow = ARGBToUVRow_Any_SSSE3;
ARGBToYRow = ARGBToYRow_Any_SSSE3;
if (IS_ALIGNED(width, 16)) {
ARGBToUVRow = ARGBToUVRow_SSSE3;
ARGBToYRow = ARGBToYRow_SSSE3;
}
}
#endif
#if defined(HAS_ARGBTOYROW_AVX2) && defined(HAS_ARGBTOUVROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
ARGBToUVRow = ARGBToUVRow_Any_AVX2;
ARGBToYRow = ARGBToYRow_Any_AVX2;
if (IS_ALIGNED(width, 32)) {
ARGBToUVRow = ARGBToUVRow_AVX2;
ARGBToYRow = ARGBToYRow_AVX2;
}
}
#endif
{
// Allocate 2 rows of ARGB.
const int kRowSize = (width * 4 + 31) & ~31;
align_buffer_64(row, kRowSize * 2);
#endif
for (y = 0; y < height - 1; y += 2) {
#if defined(HAS_RGB24TOYROW_NEON)
RGB24ToUVRow(src_rgb24, src_stride_rgb24, dst_u, dst_v, width);
RGB24ToYRow(src_rgb24, dst_y, width);
RGB24ToYRow(src_rgb24 + src_stride_rgb24, dst_y + dst_stride_y, width);
#else
RGB24ToARGBRow(src_rgb24, row, width);
RGB24ToARGBRow(src_rgb24 + src_stride_rgb24, row + kRowSize, width);
ARGBToUVRow(row, kRowSize, dst_u, dst_v, width);
ARGBToYRow(row, dst_y, width);
ARGBToYRow(row + kRowSize, dst_y + dst_stride_y, width);
#endif
src_rgb24 += src_stride_rgb24 * 2;
dst_y += dst_stride_y * 2;
dst_u += dst_stride_u;
dst_v += dst_stride_v;
}
if (height & 1) {
#if defined(HAS_RGB24TOYROW_NEON)
RGB24ToUVRow(src_rgb24, 0, dst_u, dst_v, width);
RGB24ToYRow(src_rgb24, dst_y, width);
#else
RGB24ToARGBRow(src_rgb24, row, width);
ARGBToUVRow(row, 0, dst_u, dst_v, width);
ARGBToYRow(row, dst_y, width);
#endif
}
#if !defined(HAS_RGB24TOYROW_NEON)
free_aligned_buffer_64(row);
}
#endif
return 0;
}
// Convert RAW to I420.
LIBYUV_API
int RAWToI420(const uint8* src_raw, int src_stride_raw,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int y;
#if defined(HAS_RAWTOYROW_NEON)
void (*RAWToUVRow)(const uint8* src_raw, int src_stride_raw,
uint8* dst_u, uint8* dst_v, int width) = RAWToUVRow_C;
void (*RAWToYRow)(const uint8* src_raw, uint8* dst_y, int width) =
RAWToYRow_C;
#else
void (*RAWToARGBRow)(const uint8* src_rgb, uint8* dst_argb, int width) =
RAWToARGBRow_C;
void (*ARGBToUVRow)(const uint8* src_argb0, int src_stride_argb,
uint8* dst_u, uint8* dst_v, int width) = ARGBToUVRow_C;
void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int width) =
ARGBToYRow_C;
#endif
if (!src_raw || !dst_y || !dst_u || !dst_v ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
src_raw = src_raw + (height - 1) * src_stride_raw;
src_stride_raw = -src_stride_raw;
}
// Neon version does direct RAW to YUV.
#if defined(HAS_RAWTOYROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
RAWToUVRow = RAWToUVRow_Any_NEON;
RAWToYRow = RAWToYRow_Any_NEON;
if (IS_ALIGNED(width, 8)) {
RAWToYRow = RAWToYRow_NEON;
if (IS_ALIGNED(width, 16)) {
RAWToUVRow = RAWToUVRow_NEON;
}
}
}
// Other platforms do intermediate conversion from RAW to ARGB.
#else
#if defined(HAS_RAWTOARGBROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
RAWToARGBRow = RAWToARGBRow_Any_SSSE3;
if (IS_ALIGNED(width, 16)) {
RAWToARGBRow = RAWToARGBRow_SSSE3;
}
}
#endif
#if defined(HAS_ARGBTOYROW_SSSE3) && defined(HAS_ARGBTOUVROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
ARGBToUVRow = ARGBToUVRow_Any_SSSE3;
ARGBToYRow = ARGBToYRow_Any_SSSE3;
if (IS_ALIGNED(width, 16)) {
ARGBToUVRow = ARGBToUVRow_SSSE3;
ARGBToYRow = ARGBToYRow_SSSE3;
}
}
#endif
#if defined(HAS_ARGBTOYROW_AVX2) && defined(HAS_ARGBTOUVROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
ARGBToUVRow = ARGBToUVRow_Any_AVX2;
ARGBToYRow = ARGBToYRow_Any_AVX2;
if (IS_ALIGNED(width, 32)) {
ARGBToUVRow = ARGBToUVRow_AVX2;
ARGBToYRow = ARGBToYRow_AVX2;
}
}
#endif
{
// Allocate 2 rows of ARGB.
const int kRowSize = (width * 4 + 31) & ~31;
align_buffer_64(row, kRowSize * 2);
#endif
for (y = 0; y < height - 1; y += 2) {
#if defined(HAS_RAWTOYROW_NEON)
RAWToUVRow(src_raw, src_stride_raw, dst_u, dst_v, width);
RAWToYRow(src_raw, dst_y, width);
RAWToYRow(src_raw + src_stride_raw, dst_y + dst_stride_y, width);
#else
RAWToARGBRow(src_raw, row, width);
RAWToARGBRow(src_raw + src_stride_raw, row + kRowSize, width);
ARGBToUVRow(row, kRowSize, dst_u, dst_v, width);
ARGBToYRow(row, dst_y, width);
ARGBToYRow(row + kRowSize, dst_y + dst_stride_y, width);
#endif
src_raw += src_stride_raw * 2;
dst_y += dst_stride_y * 2;
dst_u += dst_stride_u;
dst_v += dst_stride_v;
}
if (height & 1) {
#if defined(HAS_RAWTOYROW_NEON)
RAWToUVRow(src_raw, 0, dst_u, dst_v, width);
RAWToYRow(src_raw, dst_y, width);
#else
RAWToARGBRow(src_raw, row, width);
ARGBToUVRow(row, 0, dst_u, dst_v, width);
ARGBToYRow(row, dst_y, width);
#endif
}
#if !defined(HAS_RAWTOYROW_NEON)
free_aligned_buffer_64(row);
}
#endif
return 0;
}
// Convert RGB565 to I420.
LIBYUV_API
int RGB565ToI420(const uint8* src_rgb565, int src_stride_rgb565,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int y;
#if defined(HAS_RGB565TOYROW_NEON)
void (*RGB565ToUVRow)(const uint8* src_rgb565, int src_stride_rgb565,
uint8* dst_u, uint8* dst_v, int width) = RGB565ToUVRow_C;
void (*RGB565ToYRow)(const uint8* src_rgb565, uint8* dst_y, int width) =
RGB565ToYRow_C;
#else
void (*RGB565ToARGBRow)(const uint8* src_rgb, uint8* dst_argb, int width) =
RGB565ToARGBRow_C;
void (*ARGBToUVRow)(const uint8* src_argb0, int src_stride_argb,
uint8* dst_u, uint8* dst_v, int width) = ARGBToUVRow_C;
void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int width) =
ARGBToYRow_C;
#endif
if (!src_rgb565 || !dst_y || !dst_u || !dst_v ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
src_rgb565 = src_rgb565 + (height - 1) * src_stride_rgb565;
src_stride_rgb565 = -src_stride_rgb565;
}
// Neon version does direct RGB565 to YUV.
#if defined(HAS_RGB565TOYROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
RGB565ToUVRow = RGB565ToUVRow_Any_NEON;
RGB565ToYRow = RGB565ToYRow_Any_NEON;
if (IS_ALIGNED(width, 8)) {
RGB565ToYRow = RGB565ToYRow_NEON;
if (IS_ALIGNED(width, 16)) {
RGB565ToUVRow = RGB565ToUVRow_NEON;
}
}
}
// Other platforms do intermediate conversion from RGB565 to ARGB.
#else
#if defined(HAS_RGB565TOARGBROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2)) {
RGB565ToARGBRow = RGB565ToARGBRow_Any_SSE2;
if (IS_ALIGNED(width, 8)) {
RGB565ToARGBRow = RGB565ToARGBRow_SSE2;
}
}
#endif
#if defined(HAS_RGB565TOARGBROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
RGB565ToARGBRow = RGB565ToARGBRow_Any_AVX2;
if (IS_ALIGNED(width, 16)) {
RGB565ToARGBRow = RGB565ToARGBRow_AVX2;
}
}
#endif
#if defined(HAS_ARGBTOYROW_SSSE3) && defined(HAS_ARGBTOUVROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
ARGBToUVRow = ARGBToUVRow_Any_SSSE3;
ARGBToYRow = ARGBToYRow_Any_SSSE3;
if (IS_ALIGNED(width, 16)) {
ARGBToUVRow = ARGBToUVRow_SSSE3;
ARGBToYRow = ARGBToYRow_SSSE3;
}
}
#endif
#if defined(HAS_ARGBTOYROW_AVX2) && defined(HAS_ARGBTOUVROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
ARGBToUVRow = ARGBToUVRow_Any_AVX2;
ARGBToYRow = ARGBToYRow_Any_AVX2;
if (IS_ALIGNED(width, 32)) {
ARGBToUVRow = ARGBToUVRow_AVX2;
ARGBToYRow = ARGBToYRow_AVX2;
}
}
#endif
{
// Allocate 2 rows of ARGB.
const int kRowSize = (width * 4 + 31) & ~31;
align_buffer_64(row, kRowSize * 2);
#endif
for (y = 0; y < height - 1; y += 2) {
#if defined(HAS_RGB565TOYROW_NEON)
RGB565ToUVRow(src_rgb565, src_stride_rgb565, dst_u, dst_v, width);
RGB565ToYRow(src_rgb565, dst_y, width);
RGB565ToYRow(src_rgb565 + src_stride_rgb565, dst_y + dst_stride_y, width);
#else
RGB565ToARGBRow(src_rgb565, row, width);
RGB565ToARGBRow(src_rgb565 + src_stride_rgb565, row + kRowSize, width);
ARGBToUVRow(row, kRowSize, dst_u, dst_v, width);
ARGBToYRow(row, dst_y, width);
ARGBToYRow(row + kRowSize, dst_y + dst_stride_y, width);
#endif
src_rgb565 += src_stride_rgb565 * 2;
dst_y += dst_stride_y * 2;
dst_u += dst_stride_u;
dst_v += dst_stride_v;
}
if (height & 1) {
#if defined(HAS_RGB565TOYROW_NEON)
RGB565ToUVRow(src_rgb565, 0, dst_u, dst_v, width);
RGB565ToYRow(src_rgb565, dst_y, width);
#else
RGB565ToARGBRow(src_rgb565, row, width);
ARGBToUVRow(row, 0, dst_u, dst_v, width);
ARGBToYRow(row, dst_y, width);
#endif
}
#if !defined(HAS_RGB565TOYROW_NEON)
free_aligned_buffer_64(row);
}
#endif
return 0;
}
// Convert ARGB1555 to I420.
LIBYUV_API
int ARGB1555ToI420(const uint8* src_argb1555, int src_stride_argb1555,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int y;
#if defined(HAS_ARGB1555TOYROW_NEON)
void (*ARGB1555ToUVRow)(const uint8* src_argb1555, int src_stride_argb1555,
uint8* dst_u, uint8* dst_v, int width) = ARGB1555ToUVRow_C;
void (*ARGB1555ToYRow)(const uint8* src_argb1555, uint8* dst_y, int width) =
ARGB1555ToYRow_C;
#else
void (*ARGB1555ToARGBRow)(const uint8* src_rgb, uint8* dst_argb, int width) =
ARGB1555ToARGBRow_C;
void (*ARGBToUVRow)(const uint8* src_argb0, int src_stride_argb,
uint8* dst_u, uint8* dst_v, int width) = ARGBToUVRow_C;
void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int width) =
ARGBToYRow_C;
#endif
if (!src_argb1555 || !dst_y || !dst_u || !dst_v ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
src_argb1555 = src_argb1555 + (height - 1) * src_stride_argb1555;
src_stride_argb1555 = -src_stride_argb1555;
}
// Neon version does direct ARGB1555 to YUV.
#if defined(HAS_ARGB1555TOYROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
ARGB1555ToUVRow = ARGB1555ToUVRow_Any_NEON;
ARGB1555ToYRow = ARGB1555ToYRow_Any_NEON;
if (IS_ALIGNED(width, 8)) {
ARGB1555ToYRow = ARGB1555ToYRow_NEON;
if (IS_ALIGNED(width, 16)) {
ARGB1555ToUVRow = ARGB1555ToUVRow_NEON;
}
}
}
// Other platforms do intermediate conversion from ARGB1555 to ARGB.
#else
#if defined(HAS_ARGB1555TOARGBROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2)) {
ARGB1555ToARGBRow = ARGB1555ToARGBRow_Any_SSE2;
if (IS_ALIGNED(width, 8)) {
ARGB1555ToARGBRow = ARGB1555ToARGBRow_SSE2;
}
}
#endif
#if defined(HAS_ARGB1555TOARGBROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
ARGB1555ToARGBRow = ARGB1555ToARGBRow_Any_AVX2;
if (IS_ALIGNED(width, 16)) {
ARGB1555ToARGBRow = ARGB1555ToARGBRow_AVX2;
}
}
#endif
#if defined(HAS_ARGBTOYROW_SSSE3) && defined(HAS_ARGBTOUVROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
ARGBToUVRow = ARGBToUVRow_Any_SSSE3;
ARGBToYRow = ARGBToYRow_Any_SSSE3;
if (IS_ALIGNED(width, 16)) {
ARGBToUVRow = ARGBToUVRow_SSSE3;
ARGBToYRow = ARGBToYRow_SSSE3;
}
}
#endif
#if defined(HAS_ARGBTOYROW_AVX2) && defined(HAS_ARGBTOUVROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
ARGBToUVRow = ARGBToUVRow_Any_AVX2;
ARGBToYRow = ARGBToYRow_Any_AVX2;
if (IS_ALIGNED(width, 32)) {
ARGBToUVRow = ARGBToUVRow_AVX2;
ARGBToYRow = ARGBToYRow_AVX2;
}
}
#endif
{
// Allocate 2 rows of ARGB.
const int kRowSize = (width * 4 + 31) & ~31;
align_buffer_64(row, kRowSize * 2);
#endif
for (y = 0; y < height - 1; y += 2) {
#if defined(HAS_ARGB1555TOYROW_NEON)
ARGB1555ToUVRow(src_argb1555, src_stride_argb1555, dst_u, dst_v, width);
ARGB1555ToYRow(src_argb1555, dst_y, width);
ARGB1555ToYRow(src_argb1555 + src_stride_argb1555, dst_y + dst_stride_y,
width);
#else
ARGB1555ToARGBRow(src_argb1555, row, width);
ARGB1555ToARGBRow(src_argb1555 + src_stride_argb1555, row + kRowSize,
width);
ARGBToUVRow(row, kRowSize, dst_u, dst_v, width);
ARGBToYRow(row, dst_y, width);
ARGBToYRow(row + kRowSize, dst_y + dst_stride_y, width);
#endif
src_argb1555 += src_stride_argb1555 * 2;
dst_y += dst_stride_y * 2;
dst_u += dst_stride_u;
dst_v += dst_stride_v;
}
if (height & 1) {
#if defined(HAS_ARGB1555TOYROW_NEON)
ARGB1555ToUVRow(src_argb1555, 0, dst_u, dst_v, width);
ARGB1555ToYRow(src_argb1555, dst_y, width);
#else
ARGB1555ToARGBRow(src_argb1555, row, width);
ARGBToUVRow(row, 0, dst_u, dst_v, width);
ARGBToYRow(row, dst_y, width);
#endif
}
#if !defined(HAS_ARGB1555TOYROW_NEON)
free_aligned_buffer_64(row);
}
#endif
return 0;
}
// Convert ARGB4444 to I420.
LIBYUV_API
int ARGB4444ToI420(const uint8* src_argb4444, int src_stride_argb4444,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int y;
#if defined(HAS_ARGB4444TOYROW_NEON)
void (*ARGB4444ToUVRow)(const uint8* src_argb4444, int src_stride_argb4444,
uint8* dst_u, uint8* dst_v, int width) = ARGB4444ToUVRow_C;
void (*ARGB4444ToYRow)(const uint8* src_argb4444, uint8* dst_y, int width) =
ARGB4444ToYRow_C;
#else
void (*ARGB4444ToARGBRow)(const uint8* src_rgb, uint8* dst_argb, int width) =
ARGB4444ToARGBRow_C;
void (*ARGBToUVRow)(const uint8* src_argb0, int src_stride_argb,
uint8* dst_u, uint8* dst_v, int width) = ARGBToUVRow_C;
void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int width) =
ARGBToYRow_C;
#endif
if (!src_argb4444 || !dst_y || !dst_u || !dst_v ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
src_argb4444 = src_argb4444 + (height - 1) * src_stride_argb4444;
src_stride_argb4444 = -src_stride_argb4444;
}
// Neon version does direct ARGB4444 to YUV.
#if defined(HAS_ARGB4444TOYROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
ARGB4444ToUVRow = ARGB4444ToUVRow_Any_NEON;
ARGB4444ToYRow = ARGB4444ToYRow_Any_NEON;
if (IS_ALIGNED(width, 8)) {
ARGB4444ToYRow = ARGB4444ToYRow_NEON;
if (IS_ALIGNED(width, 16)) {
ARGB4444ToUVRow = ARGB4444ToUVRow_NEON;
}
}
}
// Other platforms do intermediate conversion from ARGB4444 to ARGB.
#else
#if defined(HAS_ARGB4444TOARGBROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2)) {
ARGB4444ToARGBRow = ARGB4444ToARGBRow_Any_SSE2;
if (IS_ALIGNED(width, 8)) {
ARGB4444ToARGBRow = ARGB4444ToARGBRow_SSE2;
}
}
#endif
#if defined(HAS_ARGB4444TOARGBROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
ARGB4444ToARGBRow = ARGB4444ToARGBRow_Any_AVX2;
if (IS_ALIGNED(width, 16)) {
ARGB4444ToARGBRow = ARGB4444ToARGBRow_AVX2;
}
}
#endif
#if defined(HAS_ARGBTOYROW_SSSE3) && defined(HAS_ARGBTOUVROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
ARGBToUVRow = ARGBToUVRow_Any_SSSE3;
ARGBToYRow = ARGBToYRow_Any_SSSE3;
if (IS_ALIGNED(width, 16)) {
ARGBToUVRow = ARGBToUVRow_SSSE3;
ARGBToYRow = ARGBToYRow_SSSE3;
}
}
#endif
#if defined(HAS_ARGBTOYROW_AVX2) && defined(HAS_ARGBTOUVROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
ARGBToUVRow = ARGBToUVRow_Any_AVX2;
ARGBToYRow = ARGBToYRow_Any_AVX2;
if (IS_ALIGNED(width, 32)) {
ARGBToUVRow = ARGBToUVRow_AVX2;
ARGBToYRow = ARGBToYRow_AVX2;
}
}
#endif
{
// Allocate 2 rows of ARGB.
const int kRowSize = (width * 4 + 31) & ~31;
align_buffer_64(row, kRowSize * 2);
#endif
for (y = 0; y < height - 1; y += 2) {
#if defined(HAS_ARGB4444TOYROW_NEON)
ARGB4444ToUVRow(src_argb4444, src_stride_argb4444, dst_u, dst_v, width);
ARGB4444ToYRow(src_argb4444, dst_y, width);
ARGB4444ToYRow(src_argb4444 + src_stride_argb4444, dst_y + dst_stride_y,
width);
#else
ARGB4444ToARGBRow(src_argb4444, row, width);
ARGB4444ToARGBRow(src_argb4444 + src_stride_argb4444, row + kRowSize,
width);
ARGBToUVRow(row, kRowSize, dst_u, dst_v, width);
ARGBToYRow(row, dst_y, width);
ARGBToYRow(row + kRowSize, dst_y + dst_stride_y, width);
#endif
src_argb4444 += src_stride_argb4444 * 2;
dst_y += dst_stride_y * 2;
dst_u += dst_stride_u;
dst_v += dst_stride_v;
}
if (height & 1) {
#if defined(HAS_ARGB4444TOYROW_NEON)
ARGB4444ToUVRow(src_argb4444, 0, dst_u, dst_v, width);
ARGB4444ToYRow(src_argb4444, dst_y, width);
#else
ARGB4444ToARGBRow(src_argb4444, row, width);
ARGBToUVRow(row, 0, dst_u, dst_v, width);
ARGBToYRow(row, dst_y, width);
#endif
}
#if !defined(HAS_ARGB4444TOYROW_NEON)
free_aligned_buffer_64(row);
}
#endif
return 0;
}
static void SplitPixels(const uint8* src_u, int src_pixel_stride_uv,
uint8* dst_u, int width) {
int i;
for (i = 0; i < width; ++i) {
*dst_u = *src_u;
++dst_u;
src_u += src_pixel_stride_uv;
}
}
// Convert Android420 to I420.
LIBYUV_API
int Android420ToI420(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_pixel_stride_uv,
uint8* dst_y, int dst_stride_y,
uint8* dst_u, int dst_stride_u,
uint8* dst_v, int dst_stride_v,
int width, int height) {
int y;
const int vu_off = src_v - src_u;
int halfwidth = (width + 1) >> 1;
int halfheight = (height + 1) >> 1;
if (!src_u || !src_v ||
!dst_u || !dst_v ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
halfheight = (height + 1) >> 1;
src_y = src_y + (height - 1) * src_stride_y;
src_u = src_u + (halfheight - 1) * src_stride_u;
src_v = src_v + (halfheight - 1) * src_stride_v;
src_stride_y = -src_stride_y;
src_stride_u = -src_stride_u;
src_stride_v = -src_stride_v;
}
if (dst_y) {
CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height);
}
// Copy UV planes as is - I420
if (src_pixel_stride_uv == 1) {
CopyPlane(src_u, src_stride_u, dst_u, dst_stride_u, halfwidth, halfheight);
CopyPlane(src_v, src_stride_v, dst_v, dst_stride_v, halfwidth, halfheight);
return 0;
// Split UV planes - NV21
} else if (src_pixel_stride_uv == 2 && vu_off == -1 &&
src_stride_u == src_stride_v) {
SplitUVPlane(src_v, src_stride_v, dst_v, dst_stride_v, dst_u, dst_stride_u,
halfwidth, halfheight);
return 0;
// Split UV planes - NV12
} else if (src_pixel_stride_uv == 2 && vu_off == 1 &&
src_stride_u == src_stride_v) {
SplitUVPlane(src_u, src_stride_u, dst_u, dst_stride_u, dst_v, dst_stride_v,
halfwidth, halfheight);
return 0;
}
for (y = 0; y < halfheight; ++y) {
SplitPixels(src_u, src_pixel_stride_uv, dst_u, halfwidth);
SplitPixels(src_v, src_pixel_stride_uv, dst_v, halfwidth);
src_u += src_stride_u;
src_v += src_stride_v;
dst_u += dst_stride_u;
dst_v += dst_stride_v;
}
return 0;
}
#ifdef __cplusplus
} // extern "C"
} // namespace libyuv
#endif