/*
 *  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 <limits.h>
#include <stdint.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 src_uv_width = SUBSAMPLE(src_y_width, 1, 1);
  const int src_uv_height = SUBSAMPLE(src_y_height, 1, 1);
  int r;
  if ((!src_y && dst_y) || !src_u || !src_v || !dst_u || !dst_v ||
      src_y_width <= 0 || src_y_height == 0 || dst_uv_width <= 0 ||
      dst_uv_height <= 0) {
    return -1;
  }
  if (dst_y) {
    CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, src_y_width,
              src_y_height);
  }
  r = ScalePlane(src_u, src_stride_u, src_uv_width, src_uv_height, dst_u,
                 dst_stride_u, dst_uv_width, dst_uv_height, kFilterBilinear);
  if (r != 0) {
    return r;
  }
  r = 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 r;
}

// 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_y && dst_y) || !src_u || !src_v || !dst_u || !dst_v || width <= 0 ||
      height == 0 || height == INT_MIN) {
    return -1;
  }
  // Negative height means invert the image.
  if (height < 0) {
    height = -height;
    halfheight = (height + 1) >> 1;
    if (src_y) {
      src_y = src_y + (ptrdiff_t)(height - 1) * src_stride_y;
      src_stride_y = -src_stride_y;
    }
    src_u = src_u + (ptrdiff_t)(halfheight - 1) * src_stride_u;
    src_v = src_v + (ptrdiff_t)(halfheight - 1) * src_stride_v;
    src_stride_u = -src_stride_u;
    src_stride_v = -src_stride_v;
  }

  // Convert Y plane.
  if (dst_y) {
    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;
}

// Convert 8 bit YUV to 12 bit.
LIBYUV_API
int I420ToI012(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_y && dst_y) || !src_u || !src_v || !dst_u || !dst_v || width <= 0 ||
      height == 0 || height == INT_MIN) {
    return -1;
  }
  // Negative height means invert the image.
  if (height < 0) {
    height = -height;
    halfheight = (height + 1) >> 1;
    if (src_y) {
      src_y = src_y + (ptrdiff_t)(height - 1) * src_stride_y;
      src_stride_y = -src_stride_y;
    }
    src_u = src_u + (ptrdiff_t)(halfheight - 1) * src_stride_u;
    src_v = src_v + (ptrdiff_t)(halfheight - 1) * src_stride_v;
    src_stride_u = -src_stride_u;
    src_stride_v = -src_stride_v;
  }

  // Convert Y plane.
  if (dst_y) {
    Convert8To16Plane(src_y, src_stride_y, dst_y, dst_stride_y, 4096, width,
                      height);
  }
  // Convert UV planes.
  Convert8To16Plane(src_u, src_stride_u, dst_u, dst_stride_u, 4096, halfwidth,
                    halfheight);
  Convert8To16Plane(src_v, src_stride_v, dst_v, dst_stride_v, 4096, 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);
}

// 420 chroma to 444 chroma, 10/12 bit version
LIBYUV_API
int I010ToI410(const uint16_t* src_y,
               int src_stride_y,
               const uint16_t* src_u,
               int src_stride_u,
               const uint16_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 r;
  if ((!src_y && dst_y) || !src_u || !src_v || !dst_u || !dst_v || width <= 0 ||
      height == 0 || height == INT_MIN) {
    return -1;
  }

  if (dst_y) {
    CopyPlane_16(src_y, src_stride_y, dst_y, dst_stride_y, width, height);
  }
  r = ScalePlane_12(src_u, src_stride_u, SUBSAMPLE(width, 1, 1),
                    SUBSAMPLE(height, 1, 1), dst_u, dst_stride_u, width,
                    Abs(height), kFilterBilinear);
  if (r != 0) {
    return r;
  }
  r = ScalePlane_12(src_v, src_stride_v, SUBSAMPLE(width, 1, 1),
                    SUBSAMPLE(height, 1, 1), dst_v, dst_stride_v, width,
                    Abs(height), kFilterBilinear);
  return r;
}

// 422 chroma to 444 chroma, 10/12 bit version
LIBYUV_API
int I210ToI410(const uint16_t* src_y,
               int src_stride_y,
               const uint16_t* src_u,
               int src_stride_u,
               const uint16_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 r;
  if ((!src_y && dst_y) || !src_u || !src_v || !dst_u || !dst_v || width <= 0 ||
      height == 0 || height == INT_MIN) {
    return -1;
  }

  if (dst_y) {
    CopyPlane_16(src_y, src_stride_y, dst_y, dst_stride_y, width, height);
  }
  r = ScalePlane_12(src_u, src_stride_u, SUBSAMPLE(width, 1, 1), height, dst_u,
                    dst_stride_u, width, Abs(height), kFilterBilinear);
  if (r != 0) {
    return r;
  }
  r = ScalePlane_12(src_v, src_stride_v, SUBSAMPLE(width, 1, 1), height, dst_v,
                    dst_stride_v, width, Abs(height), kFilterBilinear);
  return r;
}

// 422 chroma is 1/2 width, 1x height
// 444 chroma is 1x width, 1x height
LIBYUV_API
int I422ToI444(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) {
  int r;
  if ((!src_y && dst_y) || !src_u || !src_v || !dst_u || !dst_v || width <= 0 ||
      height == 0 || height == INT_MIN) {
    return -1;
  }

  if (dst_y) {
    CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height);
  }
  r = ScalePlane(src_u, src_stride_u, SUBSAMPLE(width, 1, 1), height, dst_u,
                 dst_stride_u, width, Abs(height), kFilterBilinear);
  if (r != 0) {
    return r;
  }
  r = ScalePlane(src_v, src_stride_v, SUBSAMPLE(width, 1, 1), height, dst_v,
                 dst_stride_v, width, Abs(height), kFilterBilinear);
  return r;
}

// 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 || height == INT_MIN) {
    return -1;
  }
  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 ||
      height == INT_MIN) {
    return -1;
  }
  // Negative height means invert the image.
  if (height < 0) {
    height = -height;
    dst_yuy2 = dst_yuy2 + (ptrdiff_t)(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 &&
      (ptrdiff_t)width * height <= INT_MAX) {
    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 ||
      height == INT_MIN) {
    return -1;
  }
  // Negative height means invert the image.
  if (height < 0) {
    height = -height;
    dst_yuy2 = dst_yuy2 + (ptrdiff_t)(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_LSX)
  if (TestCpuFlag(kCpuHasLSX)) {
    I422ToYUY2Row = I422ToYUY2Row_Any_LSX;
    if (IS_ALIGNED(width, 16)) {
      I422ToYUY2Row = I422ToYUY2Row_LSX;
    }
  }
#endif
#if defined(HAS_I422TOYUY2ROW_LASX)
  if (TestCpuFlag(kCpuHasLASX)) {
    I422ToYUY2Row = I422ToYUY2Row_Any_LASX;
    if (IS_ALIGNED(width, 32)) {
      I422ToYUY2Row = I422ToYUY2Row_LASX;
    }
  }
#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 ||
      height == INT_MIN) {
    return -1;
  }
  // Negative height means invert the image.
  if (height < 0) {
    height = -height;
    dst_uyvy = dst_uyvy + (ptrdiff_t)(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 &&
      (ptrdiff_t)width * height <= INT_MAX) {
    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_LSX)
  if (TestCpuFlag(kCpuHasLSX)) {
    I422ToUYVYRow = I422ToUYVYRow_Any_LSX;
    if (IS_ALIGNED(width, 16)) {
      I422ToUYVYRow = I422ToUYVYRow_LSX;
    }
  }
#endif
#if defined(HAS_I422TOUYVYROW_LASX)
  if (TestCpuFlag(kCpuHasLASX)) {
    I422ToUYVYRow = I422ToUYVYRow_Any_LASX;
    if (IS_ALIGNED(width, 32)) {
      I422ToUYVYRow = I422ToUYVYRow_LASX;
    }
  }
#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 ||
      height == INT_MIN) {
    return -1;
  }
  // Negative height means invert the image.
  if (height < 0) {
    height = -height;
    dst_uyvy = dst_uyvy + (ptrdiff_t)(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_LSX)
  if (TestCpuFlag(kCpuHasLSX)) {
    I422ToUYVYRow = I422ToUYVYRow_Any_LSX;
    if (IS_ALIGNED(width, 16)) {
      I422ToUYVYRow = I422ToUYVYRow_LSX;
    }
  }
#endif
#if defined(HAS_I422TOUYVYROW_LASX)
  if (TestCpuFlag(kCpuHasLASX)) {
    I422ToUYVYRow = I422ToUYVYRow_Any_LASX;
    if (IS_ALIGNED(width, 32)) {
      I422ToUYVYRow = I422ToUYVYRow_LASX;
    }
  }
#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;
}

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) {
  int halfwidth = (width + 1) / 2;
  int halfheight = (height + 1) / 2;
  if ((!src_y && dst_y) || !src_u || !src_v || !dst_uv || width <= 0 ||
      height == 0 || height == INT_MIN) {
    return -1;
  }
  // Negative height means invert the image.
  if (height < 0) {
    height = -height;
    halfheight = (height + 1) >> 1;
    src_y = src_y + (ptrdiff_t)(height - 1) * src_stride_y;
    src_u = src_u + (ptrdiff_t)(halfheight - 1) * src_stride_u;
    src_v = src_v + (ptrdiff_t)(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);
  }
  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);
}

static int I4xxToPxxx(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_uv,
                      int dst_stride_uv,
                      int width,
                      int height,
                      int subsample_x,
                      int subsample_y) {
  int y;
  int uv_width;
  int uv_height;
  int row_stride;
  void (*Convert8To16Row)(const uint8_t* src_y, uint16_t* dst_y, int bits,
                          int width) = Convert8To16Row_C;
  void (*MergeUVRow_16)(const uint16_t* src_u, const uint16_t* src_v,
                        uint16_t* dst_uv, int depth, int width) =
      MergeUVRow_16_C;
  if ((!src_y && dst_y) || !src_u || !src_v || !dst_y || !dst_uv ||
      width <= 0 || height == 0 || height == INT_MIN) {
    return -1;
  }
  if (height < 0) {
    height = -height;
    uv_height = SUBSAMPLE(height, subsample_y, subsample_y);
    src_y = src_y + (ptrdiff_t)(height - 1) * src_stride_y;
    src_u = src_u + (ptrdiff_t)(uv_height - 1) * src_stride_u;
    src_v = src_v + (ptrdiff_t)(uv_height - 1) * src_stride_v;
    src_stride_y = -src_stride_y;
    src_stride_u = -src_stride_u;
    src_stride_v = -src_stride_v;
  } else {
    uv_height = SUBSAMPLE(height, subsample_y, subsample_y);
  }
  uv_width = SUBSAMPLE(width, subsample_x, subsample_x);

  Convert8To16Plane(src_y, src_stride_y, dst_y, dst_stride_y, 10, width,
                    height);
  ConvertToMSBPlane_16(dst_y, dst_stride_y, dst_y, dst_stride_y, width, height,
                       10);

#if defined(HAS_CONVERT8TO16ROW_SSE2)
  if (TestCpuFlag(kCpuHasSSE2)) {
    Convert8To16Row = Convert8To16Row_Any_SSE2;
    if (IS_ALIGNED(uv_width, 16)) {
      Convert8To16Row = Convert8To16Row_SSE2;
    }
  }
#endif
#if defined(HAS_CONVERT8TO16ROW_AVX2)
  if (TestCpuFlag(kCpuHasAVX2)) {
    Convert8To16Row = Convert8To16Row_Any_AVX2;
    if (IS_ALIGNED(uv_width, 32)) {
      Convert8To16Row = Convert8To16Row_AVX2;
    }
  }
#endif
#if defined(HAS_CONVERT8TO16ROW_AVX512BW)
  if (TestCpuFlag(kCpuHasAVX512BW)) {
    Convert8To16Row = Convert8To16Row_Any_AVX512BW;
    if (IS_ALIGNED(uv_width, 64)) {
      Convert8To16Row = Convert8To16Row_AVX512BW;
    }
  }
#endif
#if defined(HAS_CONVERT8TO16ROW_NEON)
  if (TestCpuFlag(kCpuHasNEON)) {
    Convert8To16Row = Convert8To16Row_Any_NEON;
    if (IS_ALIGNED(uv_width, 16)) {
      Convert8To16Row = Convert8To16Row_NEON;
    }
  }
#endif
#if defined(HAS_CONVERT8TO16ROW_SME)
  if (TestCpuFlag(kCpuHasSME)) {
    Convert8To16Row = Convert8To16Row_SME;
  }
#endif
#if defined(HAS_CONVERT8TO16ROW_RVV)
  if (TestCpuFlag(kCpuHasRVV)) {
    Convert8To16Row = Convert8To16Row_RVV;
  }
#endif
#if defined(HAS_CONVERT8TO16ROW_HVX)
  if (TestCpuFlag(kCpuHasHVX)) {
    Convert8To16Row = Convert8To16Row_HVX;
  }
#endif
#if defined(HAS_CONVERT8TO16ROW_WASMSIMD)
  if (TestCpuFlag(kCpuHasWASMSIMD)) {
    Convert8To16Row = Convert8To16Row_Any_WASMSIMD;
    if (IS_ALIGNED(uv_width, 16)) {
      Convert8To16Row = Convert8To16Row_WASMSIMD;
    }
  }
#endif
#if defined(HAS_MERGEUVROW_16_AVX2)
  if (TestCpuFlag(kCpuHasAVX2)) {
    MergeUVRow_16 = MergeUVRow_16_Any_AVX2;
    if (IS_ALIGNED(uv_width, 8)) {
      MergeUVRow_16 = MergeUVRow_16_AVX2;
    }
  }
#endif
#if defined(HAS_MERGEUVROW_16_NEON)
  if (TestCpuFlag(kCpuHasNEON)) {
    MergeUVRow_16 = MergeUVRow_16_Any_NEON;
    if (IS_ALIGNED(uv_width, 8)) {
      MergeUVRow_16 = MergeUVRow_16_NEON;
    }
  }
#endif
#if defined(HAS_MERGEUVROW_16_SME)
  if (TestCpuFlag(kCpuHasSME)) {
    MergeUVRow_16 = MergeUVRow_16_SME;
  }
#endif
#if defined(HAS_MERGEUVROW_16_HVX)
  if (TestCpuFlag(kCpuHasHVX)) {
    MergeUVRow_16 = MergeUVRow_16_HVX;
  }
#endif

  row_stride = (uv_width + 31) & ~31;
  align_buffer_64(row_u, (size_t)row_stride * sizeof(uint16_t) * 2u);
  if (!row_u) {
    return 1;
  }
  {
    uint16_t* row_u16 = (uint16_t*)row_u;
    uint16_t* row_v16 = row_u16 + row_stride;
    for (y = 0; y < uv_height; ++y) {
      Convert8To16Row(src_u, row_u16, 10, uv_width);
      Convert8To16Row(src_v, row_v16, 10, uv_width);
      MergeUVRow_16(row_u16, row_v16, dst_uv, 10, uv_width);
      src_u += src_stride_u;
      src_v += src_stride_v;
      dst_uv += dst_stride_uv;
    }
  }
  free_aligned_buffer_64(row_u);
  return 0;
}

LIBYUV_API
int I420ToP010(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_uv,
               int dst_stride_uv,
               int width,
               int height) {
  return I4xxToPxxx(src_y, src_stride_y, src_u, src_stride_u, src_v,
                    src_stride_v, dst_y, dst_stride_y, dst_uv, dst_stride_uv,
                    width, height, 1, 1);
}

LIBYUV_API
int I422ToP210(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_uv,
               int dst_stride_uv,
               int width,
               int height) {
  return I4xxToPxxx(src_y, src_stride_y, src_u, src_stride_u, src_v,
                    src_stride_v, dst_y, dst_stride_y, dst_uv, dst_stride_uv,
                    width, height, 1, 0);
}

LIBYUV_API
int I444ToP410(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_uv,
               int dst_stride_uv,
               int width,
               int height) {
  return I4xxToPxxx(src_y, src_stride_y, src_u, src_stride_u, src_v,
                    src_stride_v, dst_y, dst_stride_y, dst_uv, dst_stride_uv,
                    width, height, 0, 0);
}

static int I420ToPxxx(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_uv,
                      int dst_stride_uv,
                      int width,
                      int height,
                      int dst_uv_width,
                      int (*i4xx_to_pxxx)(const uint8_t*,
                                          int,
                                          const uint8_t*,
                                          int,
                                          const uint8_t*,
                                          int,
                                          uint16_t*,
                                          int,
                                          uint16_t*,
                                          int,
                                          int,
                                          int)) {
  int r;
  int abs_height;
  uint64_t uv_size;
  uint64_t total;
  if ((!src_y && dst_y) || !src_u || !src_v || !dst_y || !dst_uv ||
      width <= 0 || height == 0 || height == INT_MIN) {
    return -1;
  }
  abs_height = Abs(height);
  if (height < 0) {
    const int src_uv_height = SUBSAMPLE(abs_height, 1, 1);
    src_y = src_y + (ptrdiff_t)(abs_height - 1) * src_stride_y;
    src_u = src_u + (ptrdiff_t)(src_uv_height - 1) * src_stride_u;
    src_v = src_v + (ptrdiff_t)(src_uv_height - 1) * src_stride_v;
    src_stride_y = -src_stride_y;
    src_stride_u = -src_stride_u;
    src_stride_v = -src_stride_v;
    height = abs_height;
  }
  uv_size = (uint64_t)dst_uv_width * (uint64_t)abs_height;
  total = uv_size * 2u;
  if (total > SIZE_MAX) {
    return 1;
  }
  align_buffer_64(plane_u, (size_t)total);
  if (!plane_u) {
    return 1;
  }
  {
    uint8_t* tmp_u = plane_u;
    uint8_t* tmp_v = plane_u + uv_size;
    r = I420ToI4xx(src_y, src_stride_y, src_u, src_stride_u, src_v,
                   src_stride_v, NULL, 0, tmp_u, dst_uv_width, tmp_v,
                   dst_uv_width, width, height, dst_uv_width, abs_height);
    if (!r) {
      r = i4xx_to_pxxx(src_y, src_stride_y, tmp_u, dst_uv_width, tmp_v,
                       dst_uv_width, dst_y, dst_stride_y, dst_uv, dst_stride_uv,
                       width, height);
    }
  }
  free_aligned_buffer_64(plane_u);
  return r;
}

LIBYUV_API
int I420ToP210(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_uv,
               int dst_stride_uv,
               int width,
               int height) {
  return I420ToPxxx(src_y, src_stride_y, src_u, src_stride_u, src_v,
                    src_stride_v, dst_y, dst_stride_y, dst_uv, dst_stride_uv,
                    width, height, (Abs(width) + 1) >> 1, I422ToP210);
}

LIBYUV_API
int I420ToP410(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_uv,
               int dst_stride_uv,
               int width,
               int height) {
  return I420ToPxxx(src_y, src_stride_y, src_u, src_stride_u, src_v,
                    src_stride_v, dst_y, dst_stride_y, dst_uv, dst_stride_uv,
                    width, height, Abs(width), I444ToP410);
}

// 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 ||
      height == INT_MIN) {
    return -1;
  }
  const int abs_height = Abs(height);
  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: {
      int dst_y_stride = dst_sample_stride ? dst_sample_stride : width;
      uint8_t* dst_uv = dst_sample + (ptrdiff_t)dst_y_stride * abs_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: {
      int dst_y_stride = dst_sample_stride ? dst_sample_stride : width;
      uint8_t* dst_vu = dst_sample + (ptrdiff_t)dst_y_stride * abs_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;
    }
    case FOURCC_NV16: {
      int dst_y_stride = dst_sample_stride ? dst_sample_stride : width;
      int dst_uv_stride = dst_sample_stride ? dst_sample_stride : width;
      uint8_t* dst_uv = dst_sample + (ptrdiff_t)dst_y_stride * abs_height;
      int halfwidth = (width + 1) / 2;
      int halfheight = SUBSAMPLE(height, 1, 1);
      CopyPlane(y, y_stride, dst_sample, dst_y_stride, width, height);
      MergeUVPlane(u, u_stride, v, v_stride, dst_uv, dst_uv_stride * 2,
                   halfwidth, halfheight);
      if (abs_height > 1) {
        MergeUVPlane(u, u_stride, v, v_stride, dst_uv + dst_uv_stride,
                     dst_uv_stride * 2, halfwidth, height / 2);
      }
      r = 0;
      break;
    }
    case FOURCC_NV24: {
      int dst_y_stride = dst_sample_stride ? dst_sample_stride : width;
      int dst_uv_stride = dst_sample_stride ? dst_sample_stride * 2 : width * 2;
      uint8_t* dst_uv = dst_sample + (ptrdiff_t)dst_y_stride * abs_height;
      align_buffer_64(temp_u, (size_t)width * abs_height);
      align_buffer_64(temp_v, (size_t)width * abs_height);
      if (!temp_u || !temp_v) {
        free_aligned_buffer_64(temp_u);
        free_aligned_buffer_64(temp_v);
        return 1;
      }
      r = I420ToI444(y, y_stride, u, u_stride, v, v_stride, dst_sample,
                     dst_y_stride, temp_u, width, temp_v, width, width, height);
      if (r == 0) {
        MergeUVPlane(temp_u, width, temp_v, width, dst_uv, dst_uv_stride, width,
                     abs_height);
      }
      free_aligned_buffer_64(temp_u);
      free_aligned_buffer_64(temp_v);
      break;
    }
    case FOURCC_P010:
    case FOURCC_P210: {
      const int uv_min = ((width + 1) / 2) * 2;
      int dst_stride_y;
      int dst_stride_uv;
      uint16_t* dst_y16;
      uint16_t* dst_uv16;
      if (dst_sample_stride == 0) {
        dst_stride_y = width;
        dst_stride_uv = uv_min;
      } else {
        if (dst_sample_stride & 1) {
          return -1;
        }
        dst_stride_y = dst_sample_stride / 2;
        dst_stride_uv = dst_sample_stride / 2;
        if (Abs(dst_stride_uv) < uv_min) {
          return -1;
        }
      }
      dst_y16 = (uint16_t*)dst_sample;
      dst_uv16 = dst_y16 + (ptrdiff_t)dst_stride_y * abs_height;
      if (format == FOURCC_P010) {
        r = I420ToP010(y, y_stride, u, u_stride, v, v_stride, dst_y16,
                       dst_stride_y, dst_uv16, dst_stride_uv, width, height);
      } else {
        r = I420ToP210(y, y_stride, u, u_stride, v, v_stride, dst_y16,
                       dst_stride_y, dst_uv16, dst_stride_uv, width, height);
      }
      break;
    }
    case FOURCC_P410: {
      const int uv_min = width * 2;
      int dst_stride_y;
      int dst_stride_uv;
      uint16_t* dst_y16;
      uint16_t* dst_uv16;
      if (dst_sample_stride == 0) {
        dst_stride_y = width;
        dst_stride_uv = uv_min;
      } else {
        if (dst_sample_stride & 1) {
          return -1;
        }
        dst_stride_y = dst_sample_stride / 2;
        dst_stride_uv = dst_sample_stride;
        if (Abs(dst_stride_uv) < uv_min) {
          return -1;
        }
      }
      dst_y16 = (uint16_t*)dst_sample;
      dst_uv16 = dst_y16 + (ptrdiff_t)dst_stride_y * abs_height;
      r = I420ToP410(y, y_stride, u, u_stride, v, v_stride, dst_y16,
                     dst_stride_y, dst_uv16, dst_stride_uv, width, height);
      break;
    }
    // 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 = (abs_height + 1) / 2;
      uint8_t* dst_u;
      uint8_t* dst_v;
      if (format == FOURCC_YV12) {
        dst_v = dst_sample + (ptrdiff_t)dst_sample_stride * abs_height;
        dst_u = dst_v + (ptrdiff_t)halfstride * halfheight;
      } else {
        dst_u = dst_sample + (ptrdiff_t)dst_sample_stride * abs_height;
        dst_v = dst_u + (ptrdiff_t)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 + (ptrdiff_t)dst_sample_stride * abs_height;
        dst_u = dst_v + (ptrdiff_t)halfstride * abs_height;
      } else {
        dst_u = dst_sample + (ptrdiff_t)dst_sample_stride * abs_height;
        dst_v = dst_u + (ptrdiff_t)halfstride * abs_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 + (ptrdiff_t)dst_sample_stride * abs_height;
        dst_u = dst_v + (ptrdiff_t)dst_sample_stride * abs_height;
      } else {
        dst_u = dst_sample + (ptrdiff_t)dst_sample_stride * abs_height;
        dst_v = dst_u + (ptrdiff_t)dst_sample_stride * abs_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