ref: 5476ab095ffe828dee6fb69e74dba2997c76620f
dir: /third_party/libyuv/source/convert_from.cc/
/*
* Copyright 2012 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_from.h"
#include "libyuv/basic_types.h"
#include "libyuv/convert.h" // For I420Copy
#include "libyuv/cpu_id.h"
#include "libyuv/planar_functions.h"
#include "libyuv/rotate.h"
#include "libyuv/scale.h" // For ScalePlane()
#include "libyuv/video_common.h"
#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;
}
// I420 To any I4xx YUV format with mirroring.
static int I420ToI4xx(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 dst_uv_width, int dst_uv_height) {
const int dst_y_width = Abs(src_y_width);
const int dst_y_height = Abs(src_y_height);
const int src_uv_width = SUBSAMPLE(src_y_width, 1, 1);
const int src_uv_height = SUBSAMPLE(src_y_height, 1, 1);
if (src_y_width == 0 || src_y_height == 0 ||
dst_uv_width <= 0 || dst_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;
}
// 420 chroma is 1/2 width, 1/2 height
// 422 chroma is 1/2 width, 1x height
LIBYUV_API
int I420ToI422(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 dst_uv_width = (Abs(width) + 1) >> 1;
const int dst_uv_height = Abs(height);
return I420ToI4xx(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,
dst_uv_width, dst_uv_height);
}
// 420 chroma is 1/2 width, 1/2 height
// 444 chroma is 1x width, 1x height
LIBYUV_API
int I420ToI444(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 dst_uv_width = Abs(width);
const int dst_uv_height = Abs(height);
return I420ToI4xx(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,
dst_uv_width, dst_uv_height);
}
// 420 chroma is 1/2 width, 1/2 height
// 411 chroma is 1/4 width, 1x height
LIBYUV_API
int I420ToI411(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 dst_uv_width = (Abs(width) + 3) >> 2;
const int dst_uv_height = Abs(height);
return I420ToI4xx(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,
dst_uv_width, dst_uv_height);
}
// Copy to I400. Source can be I420,422,444,400,NV12,NV21
LIBYUV_API
int I400Copy(const uint8* src_y, int src_stride_y,
uint8* dst_y, int dst_stride_y,
int width, int height) {
if (!src_y || !dst_y ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
src_y = src_y + (height - 1) * src_stride_y;
src_stride_y = -src_stride_y;
}
CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height);
return 0;
}
LIBYUV_API
int I422ToYUY2(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_yuy2, int dst_stride_yuy2,
int width, int height) {
int y;
void (*I422ToYUY2Row)(const uint8* src_y, const uint8* src_u,
const uint8* src_v, uint8* dst_yuy2, int width) =
I422ToYUY2Row_C;
if (!src_y || !src_u || !src_v || !dst_yuy2 ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
dst_yuy2 = dst_yuy2 + (height - 1) * dst_stride_yuy2;
dst_stride_yuy2 = -dst_stride_yuy2;
}
// Coalesce rows.
if (src_stride_y == width &&
src_stride_u * 2 == width &&
src_stride_v * 2 == width &&
dst_stride_yuy2 == width * 2) {
width *= height;
height = 1;
src_stride_y = src_stride_u = src_stride_v = dst_stride_yuy2 = 0;
}
#if defined(HAS_I422TOYUY2ROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2)) {
I422ToYUY2Row = I422ToYUY2Row_Any_SSE2;
if (IS_ALIGNED(width, 16)) {
I422ToYUY2Row = I422ToYUY2Row_SSE2;
}
}
#endif
#if defined(HAS_I422TOYUY2ROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
I422ToYUY2Row = I422ToYUY2Row_Any_NEON;
if (IS_ALIGNED(width, 16)) {
I422ToYUY2Row = I422ToYUY2Row_NEON;
}
}
#endif
for (y = 0; y < height; ++y) {
I422ToYUY2Row(src_y, src_u, src_v, dst_yuy2, width);
src_y += src_stride_y;
src_u += src_stride_u;
src_v += src_stride_v;
dst_yuy2 += dst_stride_yuy2;
}
return 0;
}
LIBYUV_API
int I420ToYUY2(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_yuy2, int dst_stride_yuy2,
int width, int height) {
int y;
void (*I422ToYUY2Row)(const uint8* src_y, const uint8* src_u,
const uint8* src_v, uint8* dst_yuy2, int width) =
I422ToYUY2Row_C;
if (!src_y || !src_u || !src_v || !dst_yuy2 ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
dst_yuy2 = dst_yuy2 + (height - 1) * dst_stride_yuy2;
dst_stride_yuy2 = -dst_stride_yuy2;
}
#if defined(HAS_I422TOYUY2ROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2)) {
I422ToYUY2Row = I422ToYUY2Row_Any_SSE2;
if (IS_ALIGNED(width, 16)) {
I422ToYUY2Row = I422ToYUY2Row_SSE2;
}
}
#endif
#if defined(HAS_I422TOYUY2ROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
I422ToYUY2Row = I422ToYUY2Row_Any_NEON;
if (IS_ALIGNED(width, 16)) {
I422ToYUY2Row = I422ToYUY2Row_NEON;
}
}
#endif
for (y = 0; y < height - 1; y += 2) {
I422ToYUY2Row(src_y, src_u, src_v, dst_yuy2, width);
I422ToYUY2Row(src_y + src_stride_y, src_u, src_v,
dst_yuy2 + dst_stride_yuy2, width);
src_y += src_stride_y * 2;
src_u += src_stride_u;
src_v += src_stride_v;
dst_yuy2 += dst_stride_yuy2 * 2;
}
if (height & 1) {
I422ToYUY2Row(src_y, src_u, src_v, dst_yuy2, width);
}
return 0;
}
LIBYUV_API
int I422ToUYVY(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_uyvy, int dst_stride_uyvy,
int width, int height) {
int y;
void (*I422ToUYVYRow)(const uint8* src_y, const uint8* src_u,
const uint8* src_v, uint8* dst_uyvy, int width) =
I422ToUYVYRow_C;
if (!src_y || !src_u || !src_v || !dst_uyvy ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
dst_uyvy = dst_uyvy + (height - 1) * dst_stride_uyvy;
dst_stride_uyvy = -dst_stride_uyvy;
}
// Coalesce rows.
if (src_stride_y == width &&
src_stride_u * 2 == width &&
src_stride_v * 2 == width &&
dst_stride_uyvy == width * 2) {
width *= height;
height = 1;
src_stride_y = src_stride_u = src_stride_v = dst_stride_uyvy = 0;
}
#if defined(HAS_I422TOUYVYROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2)) {
I422ToUYVYRow = I422ToUYVYRow_Any_SSE2;
if (IS_ALIGNED(width, 16)) {
I422ToUYVYRow = I422ToUYVYRow_SSE2;
}
}
#endif
#if defined(HAS_I422TOUYVYROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
I422ToUYVYRow = I422ToUYVYRow_Any_NEON;
if (IS_ALIGNED(width, 16)) {
I422ToUYVYRow = I422ToUYVYRow_NEON;
}
}
#endif
for (y = 0; y < height; ++y) {
I422ToUYVYRow(src_y, src_u, src_v, dst_uyvy, width);
src_y += src_stride_y;
src_u += src_stride_u;
src_v += src_stride_v;
dst_uyvy += dst_stride_uyvy;
}
return 0;
}
LIBYUV_API
int I420ToUYVY(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_uyvy, int dst_stride_uyvy,
int width, int height) {
int y;
void (*I422ToUYVYRow)(const uint8* src_y, const uint8* src_u,
const uint8* src_v, uint8* dst_uyvy, int width) =
I422ToUYVYRow_C;
if (!src_y || !src_u || !src_v || !dst_uyvy ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
dst_uyvy = dst_uyvy + (height - 1) * dst_stride_uyvy;
dst_stride_uyvy = -dst_stride_uyvy;
}
#if defined(HAS_I422TOUYVYROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2)) {
I422ToUYVYRow = I422ToUYVYRow_Any_SSE2;
if (IS_ALIGNED(width, 16)) {
I422ToUYVYRow = I422ToUYVYRow_SSE2;
}
}
#endif
#if defined(HAS_I422TOUYVYROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
I422ToUYVYRow = I422ToUYVYRow_Any_NEON;
if (IS_ALIGNED(width, 16)) {
I422ToUYVYRow = I422ToUYVYRow_NEON;
}
}
#endif
for (y = 0; y < height - 1; y += 2) {
I422ToUYVYRow(src_y, src_u, src_v, dst_uyvy, width);
I422ToUYVYRow(src_y + src_stride_y, src_u, src_v,
dst_uyvy + dst_stride_uyvy, width);
src_y += src_stride_y * 2;
src_u += src_stride_u;
src_v += src_stride_v;
dst_uyvy += dst_stride_uyvy * 2;
}
if (height & 1) {
I422ToUYVYRow(src_y, src_u, src_v, dst_uyvy, width);
}
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,
const uint8* src_v, int src_stride_v,
uint8* dst_y, int dst_stride_y,
uint8* dst_uv, int dst_stride_uv,
int width, int height) {
if (!src_y || !src_u || !src_v || !dst_y || !dst_uv ||
width <= 0 || height == 0) {
return -1;
}
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);
}
MergeUVPlane(src_u, src_stride_u,
src_v, src_stride_v,
dst_uv, dst_stride_uv,
halfwidth, halfheight);
return 0;
}
LIBYUV_API
int I420ToNV21(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_vu, int dst_stride_vu,
int width, int height) {
return I420ToNV12(src_y, src_stride_y,
src_v, src_stride_v,
src_u, src_stride_u,
dst_y, dst_stride_y,
dst_vu, dst_stride_vu,
width, height);
}
// Convert I422 to RGBA with matrix
static int I420ToRGBAMatrix(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_rgba, int dst_stride_rgba,
const struct YuvConstants* yuvconstants,
int width, int height) {
int y;
void (*I422ToRGBARow)(const uint8* y_buf,
const uint8* u_buf,
const uint8* v_buf,
uint8* rgb_buf,
const struct YuvConstants* yuvconstants,
int width) = I422ToRGBARow_C;
if (!src_y || !src_u || !src_v || !dst_rgba ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
dst_rgba = dst_rgba + (height - 1) * dst_stride_rgba;
dst_stride_rgba = -dst_stride_rgba;
}
#if defined(HAS_I422TORGBAROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
I422ToRGBARow = I422ToRGBARow_Any_SSSE3;
if (IS_ALIGNED(width, 8)) {
I422ToRGBARow = I422ToRGBARow_SSSE3;
}
}
#endif
#if defined(HAS_I422TORGBAROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
I422ToRGBARow = I422ToRGBARow_Any_AVX2;
if (IS_ALIGNED(width, 16)) {
I422ToRGBARow = I422ToRGBARow_AVX2;
}
}
#endif
#if defined(HAS_I422TORGBAROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
I422ToRGBARow = I422ToRGBARow_Any_NEON;
if (IS_ALIGNED(width, 8)) {
I422ToRGBARow = I422ToRGBARow_NEON;
}
}
#endif
#if defined(HAS_I422TORGBAROW_DSPR2)
if (TestCpuFlag(kCpuHasDSPR2) && IS_ALIGNED(width, 4) &&
IS_ALIGNED(src_y, 4) && IS_ALIGNED(src_stride_y, 4) &&
IS_ALIGNED(src_u, 2) && IS_ALIGNED(src_stride_u, 2) &&
IS_ALIGNED(src_v, 2) && IS_ALIGNED(src_stride_v, 2) &&
IS_ALIGNED(dst_rgba, 4) && IS_ALIGNED(dst_stride_rgba, 4)) {
I422ToRGBARow = I422ToRGBARow_DSPR2;
}
#endif
for (y = 0; y < height; ++y) {
I422ToRGBARow(src_y, src_u, src_v, dst_rgba, yuvconstants, width);
dst_rgba += dst_stride_rgba;
src_y += src_stride_y;
if (y & 1) {
src_u += src_stride_u;
src_v += src_stride_v;
}
}
return 0;
}
// Convert I420 to RGBA.
LIBYUV_API
int I420ToRGBA(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_rgba, int dst_stride_rgba,
int width, int height) {
return I420ToRGBAMatrix(src_y, src_stride_y,
src_u, src_stride_u,
src_v, src_stride_v,
dst_rgba, dst_stride_rgba,
&kYuvI601Constants,
width, height);
}
// Convert I420 to BGRA.
LIBYUV_API
int I420ToBGRA(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_bgra, int dst_stride_bgra,
int width, int height) {
return I420ToRGBAMatrix(src_y, src_stride_y,
src_v, src_stride_v, // Swap U and V
src_u, src_stride_u,
dst_bgra, dst_stride_bgra,
&kYvuI601Constants, // Use Yvu matrix
width, height);
}
// Convert I420 to RGB24 with matrix
static int I420ToRGB24Matrix(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_rgb24, int dst_stride_rgb24,
const struct YuvConstants* yuvconstants,
int width, int height) {
int y;
void (*I422ToRGB24Row)(const uint8* y_buf,
const uint8* u_buf,
const uint8* v_buf,
uint8* rgb_buf,
const struct YuvConstants* yuvconstants,
int width) = I422ToRGB24Row_C;
if (!src_y || !src_u || !src_v || !dst_rgb24 ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
dst_rgb24 = dst_rgb24 + (height - 1) * dst_stride_rgb24;
dst_stride_rgb24 = -dst_stride_rgb24;
}
#if defined(HAS_I422TORGB24ROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
I422ToRGB24Row = I422ToRGB24Row_Any_SSSE3;
if (IS_ALIGNED(width, 8)) {
I422ToRGB24Row = I422ToRGB24Row_SSSE3;
}
}
#endif
#if defined(HAS_I422TORGB24ROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
I422ToRGB24Row = I422ToRGB24Row_Any_AVX2;
if (IS_ALIGNED(width, 16)) {
I422ToRGB24Row = I422ToRGB24Row_AVX2;
}
}
#endif
#if defined(HAS_I422TORGB24ROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
I422ToRGB24Row = I422ToRGB24Row_Any_NEON;
if (IS_ALIGNED(width, 8)) {
I422ToRGB24Row = I422ToRGB24Row_NEON;
}
}
#endif
for (y = 0; y < height; ++y) {
I422ToRGB24Row(src_y, src_u, src_v, dst_rgb24, yuvconstants, width);
dst_rgb24 += dst_stride_rgb24;
src_y += src_stride_y;
if (y & 1) {
src_u += src_stride_u;
src_v += src_stride_v;
}
}
return 0;
}
// Convert I420 to RGB24.
LIBYUV_API
int I420ToRGB24(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_rgb24, int dst_stride_rgb24,
int width, int height) {
return I420ToRGB24Matrix(src_y, src_stride_y,
src_u, src_stride_u,
src_v, src_stride_v,
dst_rgb24, dst_stride_rgb24,
&kYuvI601Constants,
width, height);
}
// Convert I420 to RAW.
LIBYUV_API
int I420ToRAW(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_raw, int dst_stride_raw,
int width, int height) {
return I420ToRGB24Matrix(src_y, src_stride_y,
src_v, src_stride_v, // Swap U and V
src_u, src_stride_u,
dst_raw, dst_stride_raw,
&kYvuI601Constants, // Use Yvu matrix
width, height);
}
// Convert I420 to ARGB1555.
LIBYUV_API
int I420ToARGB1555(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_argb1555, int dst_stride_argb1555,
int width, int height) {
int y;
void (*I422ToARGB1555Row)(const uint8* y_buf,
const uint8* u_buf,
const uint8* v_buf,
uint8* rgb_buf,
const struct YuvConstants* yuvconstants,
int width) = I422ToARGB1555Row_C;
if (!src_y || !src_u || !src_v || !dst_argb1555 ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
dst_argb1555 = dst_argb1555 + (height - 1) * dst_stride_argb1555;
dst_stride_argb1555 = -dst_stride_argb1555;
}
#if defined(HAS_I422TOARGB1555ROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
I422ToARGB1555Row = I422ToARGB1555Row_Any_SSSE3;
if (IS_ALIGNED(width, 8)) {
I422ToARGB1555Row = I422ToARGB1555Row_SSSE3;
}
}
#endif
#if defined(HAS_I422TOARGB1555ROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
I422ToARGB1555Row = I422ToARGB1555Row_Any_AVX2;
if (IS_ALIGNED(width, 16)) {
I422ToARGB1555Row = I422ToARGB1555Row_AVX2;
}
}
#endif
#if defined(HAS_I422TOARGB1555ROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
I422ToARGB1555Row = I422ToARGB1555Row_Any_NEON;
if (IS_ALIGNED(width, 8)) {
I422ToARGB1555Row = I422ToARGB1555Row_NEON;
}
}
#endif
for (y = 0; y < height; ++y) {
I422ToARGB1555Row(src_y, src_u, src_v, dst_argb1555, &kYuvI601Constants,
width);
dst_argb1555 += dst_stride_argb1555;
src_y += src_stride_y;
if (y & 1) {
src_u += src_stride_u;
src_v += src_stride_v;
}
}
return 0;
}
// Convert I420 to ARGB4444.
LIBYUV_API
int I420ToARGB4444(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_argb4444, int dst_stride_argb4444,
int width, int height) {
int y;
void (*I422ToARGB4444Row)(const uint8* y_buf,
const uint8* u_buf,
const uint8* v_buf,
uint8* rgb_buf,
const struct YuvConstants* yuvconstants,
int width) = I422ToARGB4444Row_C;
if (!src_y || !src_u || !src_v || !dst_argb4444 ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
dst_argb4444 = dst_argb4444 + (height - 1) * dst_stride_argb4444;
dst_stride_argb4444 = -dst_stride_argb4444;
}
#if defined(HAS_I422TOARGB4444ROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
I422ToARGB4444Row = I422ToARGB4444Row_Any_SSSE3;
if (IS_ALIGNED(width, 8)) {
I422ToARGB4444Row = I422ToARGB4444Row_SSSE3;
}
}
#endif
#if defined(HAS_I422TOARGB4444ROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
I422ToARGB4444Row = I422ToARGB4444Row_Any_AVX2;
if (IS_ALIGNED(width, 16)) {
I422ToARGB4444Row = I422ToARGB4444Row_AVX2;
}
}
#endif
#if defined(HAS_I422TOARGB4444ROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
I422ToARGB4444Row = I422ToARGB4444Row_Any_NEON;
if (IS_ALIGNED(width, 8)) {
I422ToARGB4444Row = I422ToARGB4444Row_NEON;
}
}
#endif
for (y = 0; y < height; ++y) {
I422ToARGB4444Row(src_y, src_u, src_v, dst_argb4444, &kYuvI601Constants,
width);
dst_argb4444 += dst_stride_argb4444;
src_y += src_stride_y;
if (y & 1) {
src_u += src_stride_u;
src_v += src_stride_v;
}
}
return 0;
}
// Convert I420 to RGB565.
LIBYUV_API
int I420ToRGB565(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_rgb565, int dst_stride_rgb565,
int width, int height) {
int y;
void (*I422ToRGB565Row)(const uint8* y_buf,
const uint8* u_buf,
const uint8* v_buf,
uint8* rgb_buf,
const struct YuvConstants* yuvconstants,
int width) = I422ToRGB565Row_C;
if (!src_y || !src_u || !src_v || !dst_rgb565 ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
dst_rgb565 = dst_rgb565 + (height - 1) * dst_stride_rgb565;
dst_stride_rgb565 = -dst_stride_rgb565;
}
#if defined(HAS_I422TORGB565ROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
I422ToRGB565Row = I422ToRGB565Row_Any_SSSE3;
if (IS_ALIGNED(width, 8)) {
I422ToRGB565Row = I422ToRGB565Row_SSSE3;
}
}
#endif
#if defined(HAS_I422TORGB565ROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
I422ToRGB565Row = I422ToRGB565Row_Any_AVX2;
if (IS_ALIGNED(width, 16)) {
I422ToRGB565Row = I422ToRGB565Row_AVX2;
}
}
#endif
#if defined(HAS_I422TORGB565ROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
I422ToRGB565Row = I422ToRGB565Row_Any_NEON;
if (IS_ALIGNED(width, 8)) {
I422ToRGB565Row = I422ToRGB565Row_NEON;
}
}
#endif
for (y = 0; y < height; ++y) {
I422ToRGB565Row(src_y, src_u, src_v, dst_rgb565, &kYuvI601Constants, width);
dst_rgb565 += dst_stride_rgb565;
src_y += src_stride_y;
if (y & 1) {
src_u += src_stride_u;
src_v += src_stride_v;
}
}
return 0;
}
// Ordered 8x8 dither for 888 to 565. Values from 0 to 7.
static const uint8 kDither565_4x4[16] = {
0, 4, 1, 5,
6, 2, 7, 3,
1, 5, 0, 4,
7, 3, 6, 2,
};
// Convert I420 to RGB565 with dithering.
LIBYUV_API
int I420ToRGB565Dither(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_rgb565, int dst_stride_rgb565,
const uint8* dither4x4, int width, int height) {
int y;
void (*I422ToARGBRow)(const uint8* y_buf,
const uint8* u_buf,
const uint8* v_buf,
uint8* rgb_buf,
const struct YuvConstants* yuvconstants,
int width) = I422ToARGBRow_C;
void (*ARGBToRGB565DitherRow)(const uint8* src_argb, uint8* dst_rgb,
const uint32 dither4, int width) = ARGBToRGB565DitherRow_C;
if (!src_y || !src_u || !src_v || !dst_rgb565 ||
width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
dst_rgb565 = dst_rgb565 + (height - 1) * dst_stride_rgb565;
dst_stride_rgb565 = -dst_stride_rgb565;
}
if (!dither4x4) {
dither4x4 = kDither565_4x4;
}
#if defined(HAS_I422TOARGBROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
I422ToARGBRow = I422ToARGBRow_Any_SSSE3;
if (IS_ALIGNED(width, 8)) {
I422ToARGBRow = I422ToARGBRow_SSSE3;
}
}
#endif
#if defined(HAS_I422TOARGBROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
I422ToARGBRow = I422ToARGBRow_Any_AVX2;
if (IS_ALIGNED(width, 16)) {
I422ToARGBRow = I422ToARGBRow_AVX2;
}
}
#endif
#if defined(HAS_I422TOARGBROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
I422ToARGBRow = I422ToARGBRow_Any_NEON;
if (IS_ALIGNED(width, 8)) {
I422ToARGBRow = I422ToARGBRow_NEON;
}
}
#endif
#if defined(HAS_I422TOARGBROW_DSPR2)
if (TestCpuFlag(kCpuHasDSPR2) && IS_ALIGNED(width, 4) &&
IS_ALIGNED(src_y, 4) && IS_ALIGNED(src_stride_y, 4) &&
IS_ALIGNED(src_u, 2) && IS_ALIGNED(src_stride_u, 2) &&
IS_ALIGNED(src_v, 2) && IS_ALIGNED(src_stride_v, 2)) {
I422ToARGBRow = I422ToARGBRow_DSPR2;
}
#endif
#if defined(HAS_ARGBTORGB565DITHERROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2)) {
ARGBToRGB565DitherRow = ARGBToRGB565DitherRow_Any_SSE2;
if (IS_ALIGNED(width, 4)) {
ARGBToRGB565DitherRow = ARGBToRGB565DitherRow_SSE2;
}
}
#endif
#if defined(HAS_ARGBTORGB565DITHERROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
ARGBToRGB565DitherRow = ARGBToRGB565DitherRow_Any_AVX2;
if (IS_ALIGNED(width, 8)) {
ARGBToRGB565DitherRow = ARGBToRGB565DitherRow_AVX2;
}
}
#endif
#if defined(HAS_ARGBTORGB565DITHERROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
ARGBToRGB565DitherRow = ARGBToRGB565DitherRow_Any_NEON;
if (IS_ALIGNED(width, 8)) {
ARGBToRGB565DitherRow = ARGBToRGB565DitherRow_NEON;
}
}
#endif
{
// Allocate a row of argb.
align_buffer_64(row_argb, width * 4);
for (y = 0; y < height; ++y) {
I422ToARGBRow(src_y, src_u, src_v, row_argb, &kYuvI601Constants, width);
ARGBToRGB565DitherRow(row_argb, dst_rgb565,
*(uint32*)(dither4x4 + ((y & 3) << 2)), width);
dst_rgb565 += dst_stride_rgb565;
src_y += src_stride_y;
if (y & 1) {
src_u += src_stride_u;
src_v += src_stride_v;
}
}
free_aligned_buffer_64(row_argb);
}
return 0;
}
// Convert I420 to specified format
LIBYUV_API
int ConvertFromI420(const uint8* y, int y_stride,
const uint8* u, int u_stride,
const uint8* v, int v_stride,
uint8* dst_sample, int dst_sample_stride,
int width, int height,
uint32 fourcc) {
uint32 format = CanonicalFourCC(fourcc);
int r = 0;
if (!y || !u|| !v || !dst_sample ||
width <= 0 || height == 0) {
return -1;
}
switch (format) {
// Single plane formats
case FOURCC_YUY2:
r = I420ToYUY2(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 2,
width, height);
break;
case FOURCC_UYVY:
r = I420ToUYVY(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 2,
width, height);
break;
case FOURCC_RGBP:
r = I420ToRGB565(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 2,
width, height);
break;
case FOURCC_RGBO:
r = I420ToARGB1555(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 2,
width, height);
break;
case FOURCC_R444:
r = I420ToARGB4444(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 2,
width, height);
break;
case FOURCC_24BG:
r = I420ToRGB24(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 3,
width, height);
break;
case FOURCC_RAW:
r = I420ToRAW(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 3,
width, height);
break;
case FOURCC_ARGB:
r = I420ToARGB(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 4,
width, height);
break;
case FOURCC_BGRA:
r = I420ToBGRA(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 4,
width, height);
break;
case FOURCC_ABGR:
r = I420ToABGR(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 4,
width, height);
break;
case FOURCC_RGBA:
r = I420ToRGBA(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample,
dst_sample_stride ? dst_sample_stride : width * 4,
width, height);
break;
case FOURCC_I400:
r = I400Copy(y, y_stride,
dst_sample,
dst_sample_stride ? dst_sample_stride : width,
width, height);
break;
case FOURCC_NV12: {
uint8* dst_uv = dst_sample + width * height;
r = I420ToNV12(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample,
dst_sample_stride ? dst_sample_stride : width,
dst_uv,
dst_sample_stride ? dst_sample_stride : width,
width, height);
break;
}
case FOURCC_NV21: {
uint8* dst_vu = dst_sample + width * height;
r = I420ToNV21(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample,
dst_sample_stride ? dst_sample_stride : width,
dst_vu,
dst_sample_stride ? dst_sample_stride : width,
width, height);
break;
}
// TODO(fbarchard): Add M420.
// Triplanar formats
// TODO(fbarchard): halfstride instead of halfwidth
case FOURCC_I420:
case FOURCC_YV12: {
int halfwidth = (width + 1) / 2;
int halfheight = (height + 1) / 2;
uint8* dst_u;
uint8* dst_v;
if (format == FOURCC_YV12) {
dst_v = dst_sample + width * height;
dst_u = dst_v + halfwidth * halfheight;
} else {
dst_u = dst_sample + width * height;
dst_v = dst_u + halfwidth * halfheight;
}
r = I420Copy(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample, width,
dst_u, halfwidth,
dst_v, halfwidth,
width, height);
break;
}
case FOURCC_I422:
case FOURCC_YV16: {
int halfwidth = (width + 1) / 2;
uint8* dst_u;
uint8* dst_v;
if (format == FOURCC_YV16) {
dst_v = dst_sample + width * height;
dst_u = dst_v + halfwidth * height;
} else {
dst_u = dst_sample + width * height;
dst_v = dst_u + halfwidth * height;
}
r = I420ToI422(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample, width,
dst_u, halfwidth,
dst_v, halfwidth,
width, height);
break;
}
case FOURCC_I444:
case FOURCC_YV24: {
uint8* dst_u;
uint8* dst_v;
if (format == FOURCC_YV24) {
dst_v = dst_sample + width * height;
dst_u = dst_v + width * height;
} else {
dst_u = dst_sample + width * height;
dst_v = dst_u + width * height;
}
r = I420ToI444(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample, width,
dst_u, width,
dst_v, width,
width, height);
break;
}
case FOURCC_I411: {
int quarterwidth = (width + 3) / 4;
uint8* dst_u = dst_sample + width * height;
uint8* dst_v = dst_u + quarterwidth * height;
r = I420ToI411(y, y_stride,
u, u_stride,
v, v_stride,
dst_sample, width,
dst_u, quarterwidth,
dst_v, quarterwidth,
width, height);
break;
}
// Formats not supported - MJPG, biplanar, some rgb formats.
default:
return -1; // unknown fourcc - return failure code.
}
return r;
}
#ifdef __cplusplus
} // extern "C"
} // namespace libyuv
#endif