ref: 7c880906a0b4c7586ac167f13eb721548989061f
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/row.h"
#include "libyuv/scale.h" // For ScalePlane()
#include "libyuv/video_common.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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_y,
int dst_stride_y,
uint8_t* dst_u,
int dst_stride_u,
uint8_t* 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;
}
// Convert 8 bit YUV to 10 bit.
LIBYUV_API
int I420ToI010(const uint8_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint16_t* dst_y,
int dst_stride_y,
uint16_t* dst_u,
int dst_stride_u,
uint16_t* 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;
}
// Convert Y plane.
Convert8To16Plane(src_y, src_stride_y, dst_y, dst_stride_y, 1024, width,
height);
// Convert UV planes.
Convert8To16Plane(src_u, src_stride_u, dst_u, dst_stride_u, 1024, halfwidth,
halfheight);
Convert8To16Plane(src_v, src_stride_v, dst_v, dst_stride_v, 1024, halfwidth,
halfheight);
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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_y,
int dst_stride_y,
uint8_t* dst_u,
int dst_stride_u,
uint8_t* 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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_y,
int dst_stride_y,
uint8_t* dst_u,
int dst_stride_u,
uint8_t* 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);
}
// Copy to I400. Source can be I420,422,444,400,NV12,NV21
LIBYUV_API
int I400Copy(const uint8_t* src_y,
int src_stride_y,
uint8_t* 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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_yuy2,
int dst_stride_yuy2,
int width,
int height) {
int y;
void (*I422ToYUY2Row)(const uint8_t* src_y, const uint8_t* src_u,
const uint8_t* src_v, uint8_t* 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_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
I422ToYUY2Row = I422ToYUY2Row_Any_AVX2;
if (IS_ALIGNED(width, 32)) {
I422ToYUY2Row = I422ToYUY2Row_AVX2;
}
}
#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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_yuy2,
int dst_stride_yuy2,
int width,
int height) {
int y;
void (*I422ToYUY2Row)(const uint8_t* src_y, const uint8_t* src_u,
const uint8_t* src_v, uint8_t* 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_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
I422ToYUY2Row = I422ToYUY2Row_Any_AVX2;
if (IS_ALIGNED(width, 32)) {
I422ToYUY2Row = I422ToYUY2Row_AVX2;
}
}
#endif
#if defined(HAS_I422TOYUY2ROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
I422ToYUY2Row = I422ToYUY2Row_Any_NEON;
if (IS_ALIGNED(width, 16)) {
I422ToYUY2Row = I422ToYUY2Row_NEON;
}
}
#endif
#if defined(HAS_I422TOYUY2ROW_MSA)
if (TestCpuFlag(kCpuHasMSA)) {
I422ToYUY2Row = I422ToYUY2Row_Any_MSA;
if (IS_ALIGNED(width, 32)) {
I422ToYUY2Row = I422ToYUY2Row_MSA;
}
}
#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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_uyvy,
int dst_stride_uyvy,
int width,
int height) {
int y;
void (*I422ToUYVYRow)(const uint8_t* src_y, const uint8_t* src_u,
const uint8_t* src_v, uint8_t* 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_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
I422ToUYVYRow = I422ToUYVYRow_Any_AVX2;
if (IS_ALIGNED(width, 32)) {
I422ToUYVYRow = I422ToUYVYRow_AVX2;
}
}
#endif
#if defined(HAS_I422TOUYVYROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
I422ToUYVYRow = I422ToUYVYRow_Any_NEON;
if (IS_ALIGNED(width, 16)) {
I422ToUYVYRow = I422ToUYVYRow_NEON;
}
}
#endif
#if defined(HAS_I422TOUYVYROW_MSA)
if (TestCpuFlag(kCpuHasMSA)) {
I422ToUYVYRow = I422ToUYVYRow_Any_MSA;
if (IS_ALIGNED(width, 32)) {
I422ToUYVYRow = I422ToUYVYRow_MSA;
}
}
#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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_uyvy,
int dst_stride_uyvy,
int width,
int height) {
int y;
void (*I422ToUYVYRow)(const uint8_t* src_y, const uint8_t* src_u,
const uint8_t* src_v, uint8_t* 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_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
I422ToUYVYRow = I422ToUYVYRow_Any_AVX2;
if (IS_ALIGNED(width, 32)) {
I422ToUYVYRow = I422ToUYVYRow_AVX2;
}
}
#endif
#if defined(HAS_I422TOUYVYROW_NEON)
if (TestCpuFlag(kCpuHasNEON)) {
I422ToUYVYRow = I422ToUYVYRow_Any_NEON;
if (IS_ALIGNED(width, 16)) {
I422ToUYVYRow = I422ToUYVYRow_NEON;
}
}
#endif
#if defined(HAS_I422TOUYVYROW_MSA)
if (TestCpuFlag(kCpuHasMSA)) {
I422ToUYVYRow = I422ToUYVYRow_Any_MSA;
if (IS_ALIGNED(width, 32)) {
I422ToUYVYRow = I422ToUYVYRow_MSA;
}
}
#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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_y,
int dst_stride_y,
uint8_t* 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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_y,
int dst_stride_y,
uint8_t* 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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_rgba,
int dst_stride_rgba,
const struct YuvConstants* yuvconstants,
int width,
int height) {
int y;
void (*I422ToRGBARow)(const uint8_t* y_buf, const uint8_t* u_buf,
const uint8_t* v_buf, uint8_t* 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_MSA)
if (TestCpuFlag(kCpuHasMSA)) {
I422ToRGBARow = I422ToRGBARow_Any_MSA;
if (IS_ALIGNED(width, 8)) {
I422ToRGBARow = I422ToRGBARow_MSA;
}
}
#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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* 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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* 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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_rgb24,
int dst_stride_rgb24,
const struct YuvConstants* yuvconstants,
int width,
int height) {
int y;
void (*I422ToRGB24Row)(const uint8_t* y_buf, const uint8_t* u_buf,
const uint8_t* v_buf, uint8_t* 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
#if defined(HAS_I422TORGB24ROW_MSA)
if (TestCpuFlag(kCpuHasMSA)) {
I422ToRGB24Row = I422ToRGB24Row_Any_MSA;
if (IS_ALIGNED(width, 16)) {
I422ToRGB24Row = I422ToRGB24Row_MSA;
}
}
#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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* 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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* 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 H420 to RGB24.
LIBYUV_API
int H420ToRGB24(const uint8_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* 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,
&kYuvH709Constants, width, height);
}
// Convert H420 to RAW.
LIBYUV_API
int H420ToRAW(const uint8_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* 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,
&kYvuH709Constants, // Use Yvu matrix
width, height);
}
// Convert I420 to ARGB1555.
LIBYUV_API
int I420ToARGB1555(const uint8_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_argb1555,
int dst_stride_argb1555,
int width,
int height) {
int y;
void (*I422ToARGB1555Row)(const uint8_t* y_buf, const uint8_t* u_buf,
const uint8_t* v_buf, uint8_t* 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
#if defined(HAS_I422TOARGB1555ROW_MSA)
if (TestCpuFlag(kCpuHasMSA)) {
I422ToARGB1555Row = I422ToARGB1555Row_Any_MSA;
if (IS_ALIGNED(width, 8)) {
I422ToARGB1555Row = I422ToARGB1555Row_MSA;
}
}
#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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_argb4444,
int dst_stride_argb4444,
int width,
int height) {
int y;
void (*I422ToARGB4444Row)(const uint8_t* y_buf, const uint8_t* u_buf,
const uint8_t* v_buf, uint8_t* 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
#if defined(HAS_I422TOARGB4444ROW_MSA)
if (TestCpuFlag(kCpuHasMSA)) {
I422ToARGB4444Row = I422ToARGB4444Row_Any_MSA;
if (IS_ALIGNED(width, 8)) {
I422ToARGB4444Row = I422ToARGB4444Row_MSA;
}
}
#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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_rgb565,
int dst_stride_rgb565,
int width,
int height) {
int y;
void (*I422ToRGB565Row)(const uint8_t* y_buf, const uint8_t* u_buf,
const uint8_t* v_buf, uint8_t* 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
#if defined(HAS_I422TORGB565ROW_MSA)
if (TestCpuFlag(kCpuHasMSA)) {
I422ToRGB565Row = I422ToRGB565Row_Any_MSA;
if (IS_ALIGNED(width, 8)) {
I422ToRGB565Row = I422ToRGB565Row_MSA;
}
}
#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;
}
// Convert I422 to RGB565.
LIBYUV_API
int I422ToRGB565(const uint8_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_rgb565,
int dst_stride_rgb565,
int width,
int height) {
int y;
void (*I422ToRGB565Row)(const uint8_t* y_buf, const uint8_t* u_buf,
const uint8_t* v_buf, uint8_t* 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
#if defined(HAS_I422TORGB565ROW_MSA)
if (TestCpuFlag(kCpuHasMSA)) {
I422ToRGB565Row = I422ToRGB565Row_Any_MSA;
if (IS_ALIGNED(width, 8)) {
I422ToRGB565Row = I422ToRGB565Row_MSA;
}
}
#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;
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_t 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_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_rgb565,
int dst_stride_rgb565,
const uint8_t* dither4x4,
int width,
int height) {
int y;
void (*I422ToARGBRow)(const uint8_t* y_buf, const uint8_t* u_buf,
const uint8_t* v_buf, uint8_t* rgb_buf,
const struct YuvConstants* yuvconstants, int width) =
I422ToARGBRow_C;
void (*ARGBToRGB565DitherRow)(const uint8_t* src_argb, uint8_t* dst_rgb,
const uint32_t 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_MSA)
if (TestCpuFlag(kCpuHasMSA)) {
I422ToARGBRow = I422ToARGBRow_Any_MSA;
if (IS_ALIGNED(width, 8)) {
I422ToARGBRow = I422ToARGBRow_MSA;
}
}
#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
#if defined(HAS_ARGBTORGB565DITHERROW_MSA)
if (TestCpuFlag(kCpuHasMSA)) {
ARGBToRGB565DitherRow = ARGBToRGB565DitherRow_Any_MSA;
if (IS_ALIGNED(width, 8)) {
ARGBToRGB565DitherRow = ARGBToRGB565DitherRow_MSA;
}
}
#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,
*(const uint32_t*)(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 AR30 with matrix
static int I420ToAR30Matrix(const uint8_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_ar30,
int dst_stride_ar30,
const struct YuvConstants* yuvconstants,
int width,
int height) {
int y;
void (*I422ToAR30Row)(const uint8_t* y_buf, const uint8_t* u_buf,
const uint8_t* v_buf, uint8_t* rgb_buf,
const struct YuvConstants* yuvconstants, int width) =
I422ToAR30Row_C;
if (!src_y || !src_u || !src_v || !dst_ar30 || width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
dst_ar30 = dst_ar30 + (height - 1) * dst_stride_ar30;
dst_stride_ar30 = -dst_stride_ar30;
}
#if defined(HAS_I422TOAR30ROW_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
I422ToAR30Row = I422ToAR30Row_Any_SSSE3;
if (IS_ALIGNED(width, 8)) {
I422ToAR30Row = I422ToAR30Row_SSSE3;
}
}
#endif
#if defined(HAS_I422TOAR30ROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2)) {
I422ToAR30Row = I422ToAR30Row_Any_AVX2;
if (IS_ALIGNED(width, 16)) {
I422ToAR30Row = I422ToAR30Row_AVX2;
}
}
#endif
for (y = 0; y < height; ++y) {
I422ToAR30Row(src_y, src_u, src_v, dst_ar30, yuvconstants, width);
dst_ar30 += dst_stride_ar30;
src_y += src_stride_y;
if (y & 1) {
src_u += src_stride_u;
src_v += src_stride_v;
}
}
return 0;
}
// Convert I420 to AR30.
LIBYUV_API
int I420ToAR30(const uint8_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_ar30,
int dst_stride_ar30,
int width,
int height) {
return I420ToAR30Matrix(src_y, src_stride_y, src_u, src_stride_u, src_v,
src_stride_v, dst_ar30, dst_stride_ar30,
&kYuvI601Constants, width, height);
}
// Convert H420 to AR30.
LIBYUV_API
int H420ToAR30(const uint8_t* src_y,
int src_stride_y,
const uint8_t* src_u,
int src_stride_u,
const uint8_t* src_v,
int src_stride_v,
uint8_t* dst_ar30,
int dst_stride_ar30,
int width,
int height) {
return I420ToAR30Matrix(src_y, src_stride_y, src_u, src_stride_u, src_v,
src_stride_v, dst_ar30, dst_stride_ar30,
&kYvuH709Constants, width, height);
}
// Convert I420 to specified format
LIBYUV_API
int ConvertFromI420(const uint8_t* y,
int y_stride,
const uint8_t* u,
int u_stride,
const uint8_t* v,
int v_stride,
uint8_t* dst_sample,
int dst_sample_stride,
int width,
int height,
uint32_t fourcc) {
uint32_t 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_AR30:
r = I420ToAR30(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_t* 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_t* 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
case FOURCC_I420:
case FOURCC_YV12: {
dst_sample_stride = dst_sample_stride ? dst_sample_stride : width;
int halfstride = (dst_sample_stride + 1) / 2;
int halfheight = (height + 1) / 2;
uint8_t* dst_u;
uint8_t* dst_v;
if (format == FOURCC_YV12) {
dst_v = dst_sample + dst_sample_stride * height;
dst_u = dst_v + halfstride * halfheight;
} else {
dst_u = dst_sample + dst_sample_stride * height;
dst_v = dst_u + halfstride * halfheight;
}
r = I420Copy(y, y_stride, u, u_stride, v, v_stride, dst_sample,
dst_sample_stride, dst_u, halfstride, dst_v, halfstride,
width, height);
break;
}
case FOURCC_I422:
case FOURCC_YV16: {
dst_sample_stride = dst_sample_stride ? dst_sample_stride : width;
int halfstride = (dst_sample_stride + 1) / 2;
uint8_t* dst_u;
uint8_t* dst_v;
if (format == FOURCC_YV16) {
dst_v = dst_sample + dst_sample_stride * height;
dst_u = dst_v + halfstride * height;
} else {
dst_u = dst_sample + dst_sample_stride * height;
dst_v = dst_u + halfstride * height;
}
r = I420ToI422(y, y_stride, u, u_stride, v, v_stride, dst_sample,
dst_sample_stride, dst_u, halfstride, dst_v, halfstride,
width, height);
break;
}
case FOURCC_I444:
case FOURCC_YV24: {
dst_sample_stride = dst_sample_stride ? dst_sample_stride : width;
uint8_t* dst_u;
uint8_t* dst_v;
if (format == FOURCC_YV24) {
dst_v = dst_sample + dst_sample_stride * height;
dst_u = dst_v + dst_sample_stride * height;
} else {
dst_u = dst_sample + dst_sample_stride * height;
dst_v = dst_u + dst_sample_stride * height;
}
r = I420ToI444(y, y_stride, u, u_stride, v, v_stride, dst_sample,
dst_sample_stride, dst_u, dst_sample_stride, dst_v,
dst_sample_stride, 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