The Tor Browser: media/libyuv/source/convert_from.cc@b8a032363ba2 (annotated)

media/libyuv/source/convert_from.cc@b8a032363ba2 (annotated)

media/libyuv/source/convert_from.cc

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /*
  *  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/format_conversion.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) {
   if (src_y_width == 0 || src_y_height == 0 ||
       dst_uv_width <= 0 || dst_uv_height <= 0) {
     return -1;
   }
   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);
   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) {
   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;
   }
   void (*I422ToYUY2Row)(const uint8* src_y, const uint8* src_u,
                         const uint8* src_v, uint8* dst_yuy2, int width) =
       I422ToYUY2Row_C;
 #if defined(HAS_I422TOYUY2ROW_SSE2)
   if (TestCpuFlag(kCpuHasSSE2) && width >= 16) {
     I422ToYUY2Row = I422ToYUY2Row_Any_SSE2;
     if (IS_ALIGNED(width, 16)) {
       I422ToYUY2Row = I422ToYUY2Row_SSE2;
     }
   }
 #elif defined(HAS_I422TOYUY2ROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 16) {
     I422ToYUY2Row = I422ToYUY2Row_Any_NEON;
     if (IS_ALIGNED(width, 16)) {
       I422ToYUY2Row = I422ToYUY2Row_NEON;
     }
   }
 #endif
   for (int 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) {
   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;
   }
   void (*I422ToYUY2Row)(const uint8* src_y, const uint8* src_u,
                         const uint8* src_v, uint8* dst_yuy2, int width) =
       I422ToYUY2Row_C;
 #if defined(HAS_I422TOYUY2ROW_SSE2)
   if (TestCpuFlag(kCpuHasSSE2) && width >= 16) {
     I422ToYUY2Row = I422ToYUY2Row_Any_SSE2;
     if (IS_ALIGNED(width, 16)) {
       I422ToYUY2Row = I422ToYUY2Row_SSE2;
     }
   }
 #elif defined(HAS_I422TOYUY2ROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 16) {
     I422ToYUY2Row = I422ToYUY2Row_Any_NEON;
     if (IS_ALIGNED(width, 16)) {
       I422ToYUY2Row = I422ToYUY2Row_NEON;
     }
   }
 #endif
   for (int 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) {
   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;
   }
   void (*I422ToUYVYRow)(const uint8* src_y, const uint8* src_u,
                         const uint8* src_v, uint8* dst_uyvy, int width) =
       I422ToUYVYRow_C;
 #if defined(HAS_I422TOUYVYROW_SSE2)
   if (TestCpuFlag(kCpuHasSSE2) && width >= 16) {
     I422ToUYVYRow = I422ToUYVYRow_Any_SSE2;
     if (IS_ALIGNED(width, 16)) {
       I422ToUYVYRow = I422ToUYVYRow_SSE2;
     }
   }
 #elif defined(HAS_I422TOUYVYROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 16) {
     I422ToUYVYRow = I422ToUYVYRow_Any_NEON;
     if (IS_ALIGNED(width, 16)) {
       I422ToUYVYRow = I422ToUYVYRow_NEON;
     }
   }
 #endif
   for (int 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) {
   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;
   }
   void (*I422ToUYVYRow)(const uint8* src_y, const uint8* src_u,
                         const uint8* src_v, uint8* dst_uyvy, int width) =
       I422ToUYVYRow_C;
 #if defined(HAS_I422TOUYVYROW_SSE2)
   if (TestCpuFlag(kCpuHasSSE2) && width >= 16) {
     I422ToUYVYRow = I422ToUYVYRow_Any_SSE2;
     if (IS_ALIGNED(width, 16)) {
       I422ToUYVYRow = I422ToUYVYRow_SSE2;
     }
   }
 #elif defined(HAS_I422TOUYVYROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 16) {
     I422ToUYVYRow = I422ToUYVYRow_Any_NEON;
     if (IS_ALIGNED(width, 16)) {
       I422ToUYVYRow = I422ToUYVYRow_NEON;
     }
   }
 #endif
   for (int 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* 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;
   }
   // Negative height means invert the image.
   if (height < 0) {
     height = -height;
     int halfheight = (height + 1) >> 1;
     dst_y = dst_y + (height - 1) * dst_stride_y;
     dst_uv = dst_uv + (halfheight - 1) * dst_stride_uv;
     dst_stride_y = -dst_stride_y;
     dst_stride_uv = -dst_stride_uv;
   }
   // Coalesce rows.
   int halfwidth = (width + 1) >> 1;
   int halfheight = (height + 1) >> 1;
   if (src_stride_y == width &&
       dst_stride_y == width) {
     width *= height;
     height = 1;
     src_stride_y = dst_stride_y = 0;
   }
   // Coalesce rows.
   if (src_stride_u == halfwidth &&
       src_stride_v == halfwidth &&
       dst_stride_uv == halfwidth * 2) {
     halfwidth *= halfheight;
     halfheight = 1;
     src_stride_u = src_stride_v = dst_stride_uv = 0;
   }
   void (*MergeUVRow_)(const uint8* src_u, const uint8* src_v, uint8* dst_uv,
                       int width) = MergeUVRow_C;
 #if defined(HAS_MERGEUVROW_SSE2)
   if (TestCpuFlag(kCpuHasSSE2) && halfwidth >= 16) {
     MergeUVRow_ = MergeUVRow_Any_SSE2;
     if (IS_ALIGNED(halfwidth, 16)) {
       MergeUVRow_ = MergeUVRow_Unaligned_SSE2;
       if (IS_ALIGNED(src_u, 16) && IS_ALIGNED(src_stride_u, 16) &&
           IS_ALIGNED(src_v, 16) && IS_ALIGNED(src_stride_v, 16) &&
           IS_ALIGNED(dst_uv, 16) && IS_ALIGNED(dst_stride_uv, 16)) {
         MergeUVRow_ = MergeUVRow_SSE2;
       }
     }
   }
 #endif
 #if defined(HAS_MERGEUVROW_AVX2)
   if (TestCpuFlag(kCpuHasAVX2) && halfwidth >= 32) {
     MergeUVRow_ = MergeUVRow_Any_AVX2;
     if (IS_ALIGNED(halfwidth, 32)) {
       MergeUVRow_ = MergeUVRow_AVX2;
     }
   }
 #endif
 #if defined(HAS_MERGEUVROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && halfwidth >= 16) {
     MergeUVRow_ = MergeUVRow_Any_NEON;
     if (IS_ALIGNED(halfwidth, 16)) {
       MergeUVRow_ = MergeUVRow_NEON;
     }
   }
 #endif
   CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height);
   for (int y = 0; y < halfheight; ++y) {
     // Merge a row of U and V into a row of UV.
     MergeUVRow_(src_u, src_v, dst_uv, halfwidth);
     src_u += src_stride_u;
     src_v += src_stride_v;
     dst_uv += dst_stride_uv;
   }
   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, src_stride_y,
                     dst_vu, dst_stride_vu,
                     width, height);
 }
 // Convert I420 to ARGB.
 LIBYUV_API
 int I420ToARGB(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_argb, int dst_stride_argb,
                int width, int height) {
   if (!src_y || !src_u || !src_v || !dst_argb ||
       width <= 0 || height == 0) {
     return -1;
   }
   // Negative height means invert the image.
   if (height < 0) {
     height = -height;
     dst_argb = dst_argb + (height - 1) * dst_stride_argb;
     dst_stride_argb = -dst_stride_argb;
   }
   void (*I422ToARGBRow)(const uint8* y_buf,
                         const uint8* u_buf,
                         const uint8* v_buf,
                         uint8* rgb_buf,
                         int width) = I422ToARGBRow_C;
 #if defined(HAS_I422TOARGBROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
     I422ToARGBRow = I422ToARGBRow_Any_SSSE3;
     if (IS_ALIGNED(width, 8)) {
       I422ToARGBRow = I422ToARGBRow_Unaligned_SSSE3;
       if (IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
         I422ToARGBRow = I422ToARGBRow_SSSE3;
       }
     }
   }
 #endif
 #if defined(HAS_I422TOARGBROW_AVX2)
   if (TestCpuFlag(kCpuHasAVX2) && width >= 16) {
     I422ToARGBRow = I422ToARGBRow_Any_AVX2;
     if (IS_ALIGNED(width, 16)) {
       I422ToARGBRow = I422ToARGBRow_AVX2;
     }
   }
 #endif
 #if defined(HAS_I422TOARGBROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     I422ToARGBRow = I422ToARGBRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       I422ToARGBRow = I422ToARGBRow_NEON;
     }
   }
 #endif
 #if defined(HAS_I422TOARGBROW_MIPS_DSPR2)
   if (TestCpuFlag(kCpuHasMIPS_DSPR2) && 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_argb, 4) && IS_ALIGNED(dst_stride_argb, 4)) {
     I422ToARGBRow = I422ToARGBRow_MIPS_DSPR2;
   }
 #endif
   for (int y = 0; y < height; ++y) {
     I422ToARGBRow(src_y, src_u, src_v, dst_argb, width);
     dst_argb += dst_stride_argb;
     src_y += src_stride_y;
     if (y & 1) {
       src_u += src_stride_u;
       src_v += src_stride_v;
     }
   }
   return 0;
 }
 // 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) {
   if (!src_y || !src_u || !src_v || !dst_bgra ||
       width <= 0 || height == 0) {
     return -1;
   }
   // Negative height means invert the image.
   if (height < 0) {
     height = -height;
     dst_bgra = dst_bgra + (height - 1) * dst_stride_bgra;
     dst_stride_bgra = -dst_stride_bgra;
   }
   void (*I422ToBGRARow)(const uint8* y_buf,
                         const uint8* u_buf,
                         const uint8* v_buf,
                         uint8* rgb_buf,
                         int width) = I422ToBGRARow_C;
 #if defined(HAS_I422TOBGRAROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
     I422ToBGRARow = I422ToBGRARow_Any_SSSE3;
     if (IS_ALIGNED(width, 8)) {
       I422ToBGRARow = I422ToBGRARow_Unaligned_SSSE3;
       if (IS_ALIGNED(dst_bgra, 16) && IS_ALIGNED(dst_stride_bgra, 16)) {
         I422ToBGRARow = I422ToBGRARow_SSSE3;
       }
     }
   }
 #elif defined(HAS_I422TOBGRAROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     I422ToBGRARow = I422ToBGRARow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       I422ToBGRARow = I422ToBGRARow_NEON;
     }
   }
 #elif defined(HAS_I422TOBGRAROW_MIPS_DSPR2)
   if (TestCpuFlag(kCpuHasMIPS_DSPR2) && 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_bgra, 4) && IS_ALIGNED(dst_stride_bgra, 4)) {
     I422ToBGRARow = I422ToBGRARow_MIPS_DSPR2;
   }
 #endif
   for (int y = 0; y < height; ++y) {
     I422ToBGRARow(src_y, src_u, src_v, dst_bgra, width);
     dst_bgra += dst_stride_bgra;
     src_y += src_stride_y;
     if (y & 1) {
       src_u += src_stride_u;
       src_v += src_stride_v;
     }
   }
   return 0;
 }
 // Convert I420 to ABGR.
 LIBYUV_API
 int I420ToABGR(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_abgr, int dst_stride_abgr,
                int width, int height) {
   if (!src_y || !src_u || !src_v || !dst_abgr ||
       width <= 0 || height == 0) {
     return -1;
   }
   // Negative height means invert the image.
   if (height < 0) {
     height = -height;
     dst_abgr = dst_abgr + (height - 1) * dst_stride_abgr;
     dst_stride_abgr = -dst_stride_abgr;
   }
   void (*I422ToABGRRow)(const uint8* y_buf,
                         const uint8* u_buf,
                         const uint8* v_buf,
                         uint8* rgb_buf,
                         int width) = I422ToABGRRow_C;
 #if defined(HAS_I422TOABGRROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
     I422ToABGRRow = I422ToABGRRow_Any_SSSE3;
     if (IS_ALIGNED(width, 8)) {
       I422ToABGRRow = I422ToABGRRow_Unaligned_SSSE3;
       if (IS_ALIGNED(dst_abgr, 16) && IS_ALIGNED(dst_stride_abgr, 16)) {
         I422ToABGRRow = I422ToABGRRow_SSSE3;
       }
     }
   }
 #elif defined(HAS_I422TOABGRROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     I422ToABGRRow = I422ToABGRRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       I422ToABGRRow = I422ToABGRRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     I422ToABGRRow(src_y, src_u, src_v, dst_abgr, width);
     dst_abgr += dst_stride_abgr;
     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) {
   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;
   }
   void (*I422ToRGBARow)(const uint8* y_buf,
                         const uint8* u_buf,
                         const uint8* v_buf,
                         uint8* rgb_buf,
                         int width) = I422ToRGBARow_C;
 #if defined(HAS_I422TORGBAROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
     I422ToRGBARow = I422ToRGBARow_Any_SSSE3;
     if (IS_ALIGNED(width, 8)) {
       I422ToRGBARow = I422ToRGBARow_Unaligned_SSSE3;
       if (IS_ALIGNED(dst_rgba, 16) && IS_ALIGNED(dst_stride_rgba, 16)) {
         I422ToRGBARow = I422ToRGBARow_SSSE3;
       }
     }
   }
 #elif defined(HAS_I422TORGBAROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     I422ToRGBARow = I422ToRGBARow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       I422ToRGBARow = I422ToRGBARow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     I422ToRGBARow(src_y, src_u, src_v, dst_rgba, 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 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) {
   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;
   }
   void (*I422ToRGB24Row)(const uint8* y_buf,
                         const uint8* u_buf,
                         const uint8* v_buf,
                         uint8* rgb_buf,
                         int width) = I422ToRGB24Row_C;
 #if defined(HAS_I422TORGB24ROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
     I422ToRGB24Row = I422ToRGB24Row_Any_SSSE3;
     if (IS_ALIGNED(width, 8)) {
       I422ToRGB24Row = I422ToRGB24Row_SSSE3;
     }
   }
 #elif defined(HAS_I422TORGB24ROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     I422ToRGB24Row = I422ToRGB24Row_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       I422ToRGB24Row = I422ToRGB24Row_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     I422ToRGB24Row(src_y, src_u, src_v, dst_rgb24, 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 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) {
   if (!src_y || !src_u || !src_v || !dst_raw ||
       width <= 0 || height == 0) {
     return -1;
   }
   // Negative height means invert the image.
   if (height < 0) {
     height = -height;
     dst_raw = dst_raw + (height - 1) * dst_stride_raw;
     dst_stride_raw = -dst_stride_raw;
   }
   void (*I422ToRAWRow)(const uint8* y_buf,
                         const uint8* u_buf,
                         const uint8* v_buf,
                         uint8* rgb_buf,
                         int width) = I422ToRAWRow_C;
 #if defined(HAS_I422TORAWROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
     I422ToRAWRow = I422ToRAWRow_Any_SSSE3;
     if (IS_ALIGNED(width, 8)) {
       I422ToRAWRow = I422ToRAWRow_SSSE3;
     }
   }
 #elif defined(HAS_I422TORAWROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     I422ToRAWRow = I422ToRAWRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       I422ToRAWRow = I422ToRAWRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     I422ToRAWRow(src_y, src_u, src_v, dst_raw, width);
     dst_raw += dst_stride_raw;
     src_y += src_stride_y;
     if (y & 1) {
       src_u += src_stride_u;
       src_v += src_stride_v;
     }
   }
   return 0;
 }
 // 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) {
   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;
   }
   void (*I422ToARGB1555Row)(const uint8* y_buf,
                           const uint8* u_buf,
                           const uint8* v_buf,
                           uint8* rgb_buf,
                           int width) = I422ToARGB1555Row_C;
 #if defined(HAS_I422TOARGB1555ROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
     I422ToARGB1555Row = I422ToARGB1555Row_Any_SSSE3;
     if (IS_ALIGNED(width, 8)) {
       I422ToARGB1555Row = I422ToARGB1555Row_SSSE3;
     }
   }
 #elif defined(HAS_I422TOARGB1555ROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     I422ToARGB1555Row = I422ToARGB1555Row_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       I422ToARGB1555Row = I422ToARGB1555Row_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     I422ToARGB1555Row(src_y, src_u, src_v, dst_argb1555, 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) {
   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;
   }
   void (*I422ToARGB4444Row)(const uint8* y_buf,
                           const uint8* u_buf,
                           const uint8* v_buf,
                           uint8* rgb_buf,
                           int width) = I422ToARGB4444Row_C;
 #if defined(HAS_I422TOARGB4444ROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
     I422ToARGB4444Row = I422ToARGB4444Row_Any_SSSE3;
     if (IS_ALIGNED(width, 8)) {
       I422ToARGB4444Row = I422ToARGB4444Row_SSSE3;
     }
   }
 #elif defined(HAS_I422TOARGB4444ROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     I422ToARGB4444Row = I422ToARGB4444Row_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       I422ToARGB4444Row = I422ToARGB4444Row_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     I422ToARGB4444Row(src_y, src_u, src_v, dst_argb4444, 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) {
   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;
   }
   void (*I422ToRGB565Row)(const uint8* y_buf,
                           const uint8* u_buf,
                           const uint8* v_buf,
                           uint8* rgb_buf,
                           int width) = I422ToRGB565Row_C;
 #if defined(HAS_I422TORGB565ROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
     I422ToRGB565Row = I422ToRGB565Row_Any_SSSE3;
     if (IS_ALIGNED(width, 8)) {
       I422ToRGB565Row = I422ToRGB565Row_SSSE3;
     }
   }
 #elif defined(HAS_I422TORGB565ROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     I422ToRGB565Row = I422ToRGB565Row_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       I422ToRGB565Row = I422ToRGB565Row_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     I422ToRGB565Row(src_y, src_u, src_v, dst_rgb565, 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 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);
   if (!y || !u|| !v || !dst_sample ||
       width <= 0 || height == 0) {
     return -1;
   }
   int r = 0;
   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_BGGR:
       r = I420ToBayerBGGR(y, y_stride,
                           u, u_stride,
                           v, v_stride,
                           dst_sample,
                           dst_sample_stride ? dst_sample_stride : width,
                           width, height);
       break;
     case FOURCC_GBRG:
       r = I420ToBayerGBRG(y, y_stride,
                           u, u_stride,
                           v, v_stride,
                           dst_sample,
                           dst_sample_stride ? dst_sample_stride : width,
                           width, height);
       break;
     case FOURCC_GRBG:
       r = I420ToBayerGRBG(y, y_stride,
                           u, u_stride,
                           v, v_stride,
                           dst_sample,
                           dst_sample_stride ? dst_sample_stride : width,
                           width, height);
       break;
     case FOURCC_RGGB:
       r = I420ToBayerRGGB(y, y_stride,
                           u, u_stride,
                           v, v_stride,
                           dst_sample,
                           dst_sample_stride ? dst_sample_stride : width,
                           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 and Q420.
     // Triplanar formats
     // TODO(fbarchard): halfstride instead of halfwidth
     case FOURCC_I420:
     case FOURCC_YU12:
     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

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