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

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

media/libyuv/source/convert_from_argb.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_argb.h"
 #include "libyuv/basic_types.h"
 #include "libyuv/cpu_id.h"
 #include "libyuv/format_conversion.h"
 #include "libyuv/planar_functions.h"
 #include "libyuv/row.h"
 #ifdef __cplusplus
 namespace libyuv {
 extern "C" {
 #endif
 // ARGB little endian (bgra in memory) to I444
 LIBYUV_API
 int ARGBToI444(const uint8* src_argb, int src_stride_argb,
                uint8* dst_y, int dst_stride_y,
                uint8* dst_u, int dst_stride_u,
                uint8* dst_v, int dst_stride_v,
                int width, int height) {
   if (!src_argb || !dst_y || !dst_u || !dst_v || width <= 0 || height == 0) {
     return -1;
   }
   if (height < 0) {
     height = -height;
     src_argb = src_argb + (height - 1) * src_stride_argb;
     src_stride_argb = -src_stride_argb;
   }
   // Coalesce rows.
   if (src_stride_argb == width * 4 &&
       dst_stride_y == width &&
       dst_stride_u == width &&
       dst_stride_v == width) {
     width *= height;
     height = 1;
     src_stride_argb = dst_stride_y = dst_stride_u = dst_stride_v = 0;
   }
   void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int pix) =
       ARGBToYRow_C;
   void (*ARGBToUV444Row)(const uint8* src_argb, uint8* dst_u, uint8* dst_v,
                          int pix) = ARGBToUV444Row_C;
 #if defined(HAS_ARGBTOUV444ROW_SSSE3)
     if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
       ARGBToUV444Row = ARGBToUV444Row_Any_SSSE3;
       if (IS_ALIGNED(width, 16)) {
         ARGBToUV444Row = ARGBToUV444Row_Unaligned_SSSE3;
         if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16)) {
           ARGBToUV444Row = ARGBToUV444Row_SSSE3;
         }
       }
   }
 #endif
 #if defined(HAS_ARGBTOYROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     ARGBToYRow = ARGBToYRow_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       ARGBToYRow = ARGBToYRow_Unaligned_SSSE3;
       if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16) &&
           IS_ALIGNED(dst_y, 16) && IS_ALIGNED(dst_stride_y, 16)) {
         ARGBToYRow = ARGBToYRow_SSSE3;
       }
     }
   }
 #elif defined(HAS_ARGBTOYROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGBToYRow = ARGBToYRow_Any_NEON;
     ARGBToUV444Row = ARGBToUV444Row_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGBToYRow = ARGBToYRow_NEON;
       ARGBToUV444Row = ARGBToUV444Row_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     ARGBToUV444Row(src_argb, dst_u, dst_v, width);
     ARGBToYRow(src_argb, dst_y, width);
     src_argb += src_stride_argb;
     dst_y += dst_stride_y;
     dst_u += dst_stride_u;
     dst_v += dst_stride_v;
   }
   return 0;
 }
 // ARGB little endian (bgra in memory) to I422
 LIBYUV_API
 int ARGBToI422(const uint8* src_argb, int src_stride_argb,
                uint8* dst_y, int dst_stride_y,
                uint8* dst_u, int dst_stride_u,
                uint8* dst_v, int dst_stride_v,
                int width, int height) {
   if (!src_argb || !dst_y || !dst_u || !dst_v || width <= 0 || height == 0) {
     return -1;
   }
   if (height < 0) {
     height = -height;
     src_argb = src_argb + (height - 1) * src_stride_argb;
     src_stride_argb = -src_stride_argb;
   }
   // Coalesce rows.
   if (src_stride_argb == width * 4 &&
       dst_stride_y == width &&
       dst_stride_u * 2 == width &&
       dst_stride_v * 2 == width) {
     width *= height;
     height = 1;
     src_stride_argb = dst_stride_y = dst_stride_u = dst_stride_v = 0;
   }
   void (*ARGBToUV422Row)(const uint8* src_argb, uint8* dst_u, uint8* dst_v,
                          int pix) = ARGBToUV422Row_C;
 #if defined(HAS_ARGBTOUV422ROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     ARGBToUV422Row = ARGBToUV422Row_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       ARGBToUV422Row = ARGBToUV422Row_Unaligned_SSSE3;
       if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16)) {
         ARGBToUV422Row = ARGBToUV422Row_SSSE3;
       }
     }
   }
 #endif
   void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int pix) =
       ARGBToYRow_C;
 #if defined(HAS_ARGBTOYROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     ARGBToYRow = ARGBToYRow_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       ARGBToYRow = ARGBToYRow_Unaligned_SSSE3;
       if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16) &&
           IS_ALIGNED(dst_y, 16) && IS_ALIGNED(dst_stride_y, 16)) {
         ARGBToYRow = ARGBToYRow_SSSE3;
       }
     }
   }
 #elif defined(HAS_ARGBTOYROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGBToYRow = ARGBToYRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGBToYRow = ARGBToYRow_NEON;
     }
     if (width >= 16) {
       ARGBToUV422Row = ARGBToUV422Row_Any_NEON;
       if (IS_ALIGNED(width, 16)) {
         ARGBToUV422Row = ARGBToUV422Row_NEON;
       }
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     ARGBToUV422Row(src_argb, dst_u, dst_v, width);
     ARGBToYRow(src_argb, dst_y, width);
     src_argb += src_stride_argb;
     dst_y += dst_stride_y;
     dst_u += dst_stride_u;
     dst_v += dst_stride_v;
   }
   return 0;
 }
 // ARGB little endian (bgra in memory) to I411
 LIBYUV_API
 int ARGBToI411(const uint8* src_argb, int src_stride_argb,
                uint8* dst_y, int dst_stride_y,
                uint8* dst_u, int dst_stride_u,
                uint8* dst_v, int dst_stride_v,
                int width, int height) {
   if (!src_argb || !dst_y || !dst_u || !dst_v || width <= 0 || height == 0) {
     return -1;
   }
   if (height < 0) {
     height = -height;
     src_argb = src_argb + (height - 1) * src_stride_argb;
     src_stride_argb = -src_stride_argb;
   }
   // Coalesce rows.
   if (src_stride_argb == width * 4 &&
       dst_stride_y == width &&
       dst_stride_u * 4 == width &&
       dst_stride_v * 4 == width) {
     width *= height;
     height = 1;
     src_stride_argb = dst_stride_y = dst_stride_u = dst_stride_v = 0;
   }
   void (*ARGBToUV411Row)(const uint8* src_argb, uint8* dst_u, uint8* dst_v,
                          int pix) = ARGBToUV411Row_C;
   void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int pix) =
       ARGBToYRow_C;
 #if defined(HAS_ARGBTOYROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     ARGBToYRow = ARGBToYRow_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       ARGBToYRow = ARGBToYRow_Unaligned_SSSE3;
       if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16) &&
           IS_ALIGNED(dst_y, 16) && IS_ALIGNED(dst_stride_y, 16)) {
         ARGBToYRow = ARGBToYRow_SSSE3;
       }
     }
   }
 #endif
 #if defined(HAS_ARGBTOYROW_AVX2)
   if (TestCpuFlag(kCpuHasAVX2) && width >= 32) {
     ARGBToYRow = ARGBToYRow_Any_AVX2;
     if (IS_ALIGNED(width, 32)) {
       ARGBToYRow = ARGBToYRow_AVX2;
     }
   }
 #endif
 #if defined(HAS_ARGBTOYROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGBToYRow = ARGBToYRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGBToYRow = ARGBToYRow_NEON;
     }
     if (width >= 32) {
       ARGBToUV411Row = ARGBToUV411Row_Any_NEON;
       if (IS_ALIGNED(width, 32)) {
         ARGBToUV411Row = ARGBToUV411Row_NEON;
       }
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     ARGBToUV411Row(src_argb, dst_u, dst_v, width);
     ARGBToYRow(src_argb, dst_y, width);
     src_argb += src_stride_argb;
     dst_y += dst_stride_y;
     dst_u += dst_stride_u;
     dst_v += dst_stride_v;
   }
   return 0;
 }
 LIBYUV_API
 int ARGBToNV12(const uint8* src_argb, int src_stride_argb,
                uint8* dst_y, int dst_stride_y,
                uint8* dst_uv, int dst_stride_uv,
                int width, int height) {
   if (!src_argb ||
       !dst_y || !dst_uv ||
       width <= 0 || height == 0) {
     return -1;
   }
   // Negative height means invert the image.
   if (height < 0) {
     height = -height;
     src_argb = src_argb + (height - 1) * src_stride_argb;
     src_stride_argb = -src_stride_argb;
   }
   void (*ARGBToUVRow)(const uint8* src_argb0, int src_stride_argb,
                       uint8* dst_u, uint8* dst_v, int width) = ARGBToUVRow_C;
   void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int pix) =
       ARGBToYRow_C;
 #if defined(HAS_ARGBTOYROW_SSSE3) && defined(HAS_ARGBTOUVROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     ARGBToUVRow = ARGBToUVRow_Any_SSSE3;
     ARGBToYRow = ARGBToYRow_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       ARGBToUVRow = ARGBToUVRow_Unaligned_SSSE3;
       ARGBToYRow = ARGBToYRow_Unaligned_SSSE3;
       if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16)) {
         ARGBToUVRow = ARGBToUVRow_SSSE3;
         if (IS_ALIGNED(dst_y, 16) && IS_ALIGNED(dst_stride_y, 16)) {
           ARGBToYRow = ARGBToYRow_SSSE3;
         }
       }
     }
   }
 #elif defined(HAS_ARGBTOYROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGBToYRow = ARGBToYRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGBToYRow = ARGBToYRow_NEON;
     }
     if (width >= 16) {
       ARGBToUVRow = ARGBToUVRow_Any_NEON;
       if (IS_ALIGNED(width, 16)) {
         ARGBToUVRow = ARGBToUVRow_NEON;
       }
     }
   }
 #endif
   int halfwidth = (width + 1) >> 1;
   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(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
   // Allocate a rows of uv.
   align_buffer_64(row_u, ((halfwidth + 15) & ~15) * 2);
   uint8* row_v = row_u + ((halfwidth + 15) & ~15);
   for (int y = 0; y < height - 1; y += 2) {
     ARGBToUVRow(src_argb, src_stride_argb, row_u, row_v, width);
     MergeUVRow_(row_u, row_v, dst_uv, halfwidth);
     ARGBToYRow(src_argb, dst_y, width);
     ARGBToYRow(src_argb + src_stride_argb, dst_y + dst_stride_y, width);
     src_argb += src_stride_argb * 2;
     dst_y += dst_stride_y * 2;
     dst_uv += dst_stride_uv;
   }
   if (height & 1) {
     ARGBToUVRow(src_argb, 0, row_u, row_v, width);
     MergeUVRow_(row_u, row_v, dst_uv, halfwidth);
     ARGBToYRow(src_argb, dst_y, width);
   }
   free_aligned_buffer_64(row_u);
   return 0;
 }
 // Same as NV12 but U and V swapped.
 LIBYUV_API
 int ARGBToNV21(const uint8* src_argb, int src_stride_argb,
                uint8* dst_y, int dst_stride_y,
                uint8* dst_uv, int dst_stride_uv,
                int width, int height) {
   if (!src_argb ||
       !dst_y || !dst_uv ||
       width <= 0 || height == 0) {
     return -1;
   }
   // Negative height means invert the image.
   if (height < 0) {
     height = -height;
     src_argb = src_argb + (height - 1) * src_stride_argb;
     src_stride_argb = -src_stride_argb;
   }
   void (*ARGBToUVRow)(const uint8* src_argb0, int src_stride_argb,
                       uint8* dst_u, uint8* dst_v, int width) = ARGBToUVRow_C;
   void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int pix) =
       ARGBToYRow_C;
 #if defined(HAS_ARGBTOYROW_SSSE3) && defined(HAS_ARGBTOUVROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     ARGBToUVRow = ARGBToUVRow_Any_SSSE3;
     ARGBToYRow = ARGBToYRow_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       ARGBToUVRow = ARGBToUVRow_Unaligned_SSSE3;
       ARGBToYRow = ARGBToYRow_Unaligned_SSSE3;
       if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16)) {
         ARGBToUVRow = ARGBToUVRow_SSSE3;
         if (IS_ALIGNED(dst_y, 16) && IS_ALIGNED(dst_stride_y, 16)) {
           ARGBToYRow = ARGBToYRow_SSSE3;
         }
       }
     }
   }
 #elif defined(HAS_ARGBTOYROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGBToYRow = ARGBToYRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGBToYRow = ARGBToYRow_NEON;
     }
     if (width >= 16) {
       ARGBToUVRow = ARGBToUVRow_Any_NEON;
       if (IS_ALIGNED(width, 16)) {
         ARGBToUVRow = ARGBToUVRow_NEON;
       }
     }
   }
 #endif
   int halfwidth = (width + 1) >> 1;
   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(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
   // Allocate a rows of uv.
   align_buffer_64(row_u, ((halfwidth + 15) & ~15) * 2);
   uint8* row_v = row_u + ((halfwidth + 15) & ~15);
   for (int y = 0; y < height - 1; y += 2) {
     ARGBToUVRow(src_argb, src_stride_argb, row_u, row_v, width);
     MergeUVRow_(row_v, row_u, dst_uv, halfwidth);
     ARGBToYRow(src_argb, dst_y, width);
     ARGBToYRow(src_argb + src_stride_argb, dst_y + dst_stride_y, width);
     src_argb += src_stride_argb * 2;
     dst_y += dst_stride_y * 2;
     dst_uv += dst_stride_uv;
   }
   if (height & 1) {
     ARGBToUVRow(src_argb, 0, row_u, row_v, width);
     MergeUVRow_(row_v, row_u, dst_uv, halfwidth);
     ARGBToYRow(src_argb, dst_y, width);
   }
   free_aligned_buffer_64(row_u);
   return 0;
 }
 // Convert ARGB to YUY2.
 LIBYUV_API
 int ARGBToYUY2(const uint8* src_argb, int src_stride_argb,
                uint8* dst_yuy2, int dst_stride_yuy2,
                int width, int height) {
   if (!src_argb || !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_argb == width * 4 &&
       dst_stride_yuy2 == width * 2) {
     width *= height;
     height = 1;
     src_stride_argb = dst_stride_yuy2 = 0;
   }
   void (*ARGBToUV422Row)(const uint8* src_argb, uint8* dst_u, uint8* dst_v,
                          int pix) = ARGBToUV422Row_C;
 #if defined(HAS_ARGBTOUV422ROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     ARGBToUV422Row = ARGBToUV422Row_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       ARGBToUV422Row = ARGBToUV422Row_Unaligned_SSSE3;
       if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16)) {
         ARGBToUV422Row = ARGBToUV422Row_SSSE3;
       }
     }
   }
 #endif
   void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int pix) =
       ARGBToYRow_C;
 #if defined(HAS_ARGBTOYROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     ARGBToYRow = ARGBToYRow_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       ARGBToYRow = ARGBToYRow_Unaligned_SSSE3;
       if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16)) {
         ARGBToYRow = ARGBToYRow_SSSE3;
       }
     }
   }
 #elif defined(HAS_ARGBTOYROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGBToYRow = ARGBToYRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGBToYRow = ARGBToYRow_NEON;
     }
     if (width >= 16) {
       ARGBToUV422Row = ARGBToUV422Row_Any_NEON;
       if (IS_ALIGNED(width, 16)) {
         ARGBToUV422Row = ARGBToUV422Row_NEON;
       }
     }
   }
 #endif
   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
   // Allocate a rows of yuv.
   align_buffer_64(row_y, ((width + 63) & ~63) * 2);
   uint8* row_u = row_y + ((width + 63) & ~63);
   uint8* row_v = row_u + ((width + 63) & ~63) / 2;
   for (int y = 0; y < height; ++y) {
     ARGBToUV422Row(src_argb, row_u, row_v, width);
     ARGBToYRow(src_argb, row_y, width);
     I422ToYUY2Row(row_y, row_u, row_v, dst_yuy2, width);
     src_argb += src_stride_argb;
     dst_yuy2 += dst_stride_yuy2;
   }
   free_aligned_buffer_64(row_y);
   return 0;
 }
 // Convert ARGB to UYVY.
 LIBYUV_API
 int ARGBToUYVY(const uint8* src_argb, int src_stride_argb,
                uint8* dst_uyvy, int dst_stride_uyvy,
                int width, int height) {
   if (!src_argb || !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_argb == width * 4 &&
       dst_stride_uyvy == width * 2) {
     width *= height;
     height = 1;
     src_stride_argb = dst_stride_uyvy = 0;
   }
   void (*ARGBToUV422Row)(const uint8* src_argb, uint8* dst_u, uint8* dst_v,
                          int pix) = ARGBToUV422Row_C;
 #if defined(HAS_ARGBTOUV422ROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     ARGBToUV422Row = ARGBToUV422Row_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       ARGBToUV422Row = ARGBToUV422Row_Unaligned_SSSE3;
       if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16)) {
         ARGBToUV422Row = ARGBToUV422Row_SSSE3;
       }
     }
   }
 #endif
   void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int pix) =
       ARGBToYRow_C;
 #if defined(HAS_ARGBTOYROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     ARGBToYRow = ARGBToYRow_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       ARGBToYRow = ARGBToYRow_Unaligned_SSSE3;
       if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16)) {
         ARGBToYRow = ARGBToYRow_SSSE3;
       }
     }
   }
 #elif defined(HAS_ARGBTOYROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGBToYRow = ARGBToYRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGBToYRow = ARGBToYRow_NEON;
     }
     if (width >= 16) {
       ARGBToUV422Row = ARGBToUV422Row_Any_NEON;
       if (IS_ALIGNED(width, 16)) {
         ARGBToUV422Row = ARGBToUV422Row_NEON;
       }
     }
   }
 #endif
   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
   // Allocate a rows of yuv.
   align_buffer_64(row_y, ((width + 63) & ~63) * 2);
   uint8* row_u = row_y + ((width + 63) & ~63);
   uint8* row_v = row_u + ((width + 63) & ~63) / 2;
   for (int y = 0; y < height; ++y) {
     ARGBToUV422Row(src_argb, row_u, row_v, width);
     ARGBToYRow(src_argb, row_y, width);
     I422ToUYVYRow(row_y, row_u, row_v, dst_uyvy, width);
     src_argb += src_stride_argb;
     dst_uyvy += dst_stride_uyvy;
   }
   free_aligned_buffer_64(row_y);
   return 0;
 }
 // Convert ARGB to I400.
 LIBYUV_API
 int ARGBToI400(const uint8* src_argb, int src_stride_argb,
                uint8* dst_y, int dst_stride_y,
                int width, int height) {
   if (!src_argb || !dst_y || width <= 0 || height == 0) {
     return -1;
   }
   if (height < 0) {
     height = -height;
     src_argb = src_argb + (height - 1) * src_stride_argb;
     src_stride_argb = -src_stride_argb;
   }
   // Coalesce rows.
   if (src_stride_argb == width * 4 &&
       dst_stride_y == width) {
     width *= height;
     height = 1;
     src_stride_argb = dst_stride_y = 0;
   }
   void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int pix) =
       ARGBToYRow_C;
 #if defined(HAS_ARGBTOYROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     ARGBToYRow = ARGBToYRow_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       ARGBToYRow = ARGBToYRow_Unaligned_SSSE3;
       if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16) &&
           IS_ALIGNED(dst_y, 16) && IS_ALIGNED(dst_stride_y, 16)) {
         ARGBToYRow = ARGBToYRow_SSSE3;
       }
     }
   }
 #endif
 #if defined(HAS_ARGBTOYROW_AVX2)
   if (TestCpuFlag(kCpuHasAVX2) && width >= 32) {
     ARGBToYRow = ARGBToYRow_Any_AVX2;
     if (IS_ALIGNED(width, 32)) {
       ARGBToYRow = ARGBToYRow_AVX2;
     }
   }
 #endif
 #if defined(HAS_ARGBTOYROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGBToYRow = ARGBToYRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGBToYRow = ARGBToYRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     ARGBToYRow(src_argb, dst_y, width);
     src_argb += src_stride_argb;
     dst_y += dst_stride_y;
   }
   return 0;
 }
 // Shuffle table for converting ARGB to RGBA.
 static uvec8 kShuffleMaskARGBToRGBA = {
 u, 0u, 1u, 2u, 7u, 4u, 5u, 6u, 11u, 8u, 9u, 10u, 15u, 12u, 13u, 14u
 };
 // Convert ARGB to RGBA.
 LIBYUV_API
 int ARGBToRGBA(const uint8* src_argb, int src_stride_argb,
                uint8* dst_rgba, int dst_stride_rgba,
                int width, int height) {
   return ARGBShuffle(src_argb, src_stride_argb,
                      dst_rgba, dst_stride_rgba,
                      (const uint8*)(&kShuffleMaskARGBToRGBA),
                      width, height);
 }
 // Convert ARGB To RGB24.
 LIBYUV_API
 int ARGBToRGB24(const uint8* src_argb, int src_stride_argb,
                 uint8* dst_rgb24, int dst_stride_rgb24,
                 int width, int height) {
   if (!src_argb || !dst_rgb24 || width <= 0 || height == 0) {
     return -1;
   }
   if (height < 0) {
     height = -height;
     src_argb = src_argb + (height - 1) * src_stride_argb;
     src_stride_argb = -src_stride_argb;
   }
   // Coalesce rows.
   if (src_stride_argb == width * 4 &&
       dst_stride_rgb24 == width * 3) {
     width *= height;
     height = 1;
     src_stride_argb = dst_stride_rgb24 = 0;
   }
   void (*ARGBToRGB24Row)(const uint8* src_argb, uint8* dst_rgb, int pix) =
       ARGBToRGB24Row_C;
 #if defined(HAS_ARGBTORGB24ROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     ARGBToRGB24Row = ARGBToRGB24Row_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       ARGBToRGB24Row = ARGBToRGB24Row_SSSE3;
     }
   }
 #elif defined(HAS_ARGBTORGB24ROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGBToRGB24Row = ARGBToRGB24Row_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGBToRGB24Row = ARGBToRGB24Row_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     ARGBToRGB24Row(src_argb, dst_rgb24, width);
     src_argb += src_stride_argb;
     dst_rgb24 += dst_stride_rgb24;
   }
   return 0;
 }
 // Convert ARGB To RAW.
 LIBYUV_API
 int ARGBToRAW(const uint8* src_argb, int src_stride_argb,
               uint8* dst_raw, int dst_stride_raw,
               int width, int height) {
   if (!src_argb || !dst_raw || width <= 0 || height == 0) {
     return -1;
   }
   if (height < 0) {
     height = -height;
     src_argb = src_argb + (height - 1) * src_stride_argb;
     src_stride_argb = -src_stride_argb;
   }
   // Coalesce rows.
   if (src_stride_argb == width * 4 &&
       dst_stride_raw == width * 3) {
     width *= height;
     height = 1;
     src_stride_argb = dst_stride_raw = 0;
   }
   void (*ARGBToRAWRow)(const uint8* src_argb, uint8* dst_rgb, int pix) =
       ARGBToRAWRow_C;
 #if defined(HAS_ARGBTORAWROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     ARGBToRAWRow = ARGBToRAWRow_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       ARGBToRAWRow = ARGBToRAWRow_SSSE3;
     }
   }
 #elif defined(HAS_ARGBTORAWROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGBToRAWRow = ARGBToRAWRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGBToRAWRow = ARGBToRAWRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     ARGBToRAWRow(src_argb, dst_raw, width);
     src_argb += src_stride_argb;
     dst_raw += dst_stride_raw;
   }
   return 0;
 }
 // Convert ARGB To RGB565.
 LIBYUV_API
 int ARGBToRGB565(const uint8* src_argb, int src_stride_argb,
                  uint8* dst_rgb565, int dst_stride_rgb565,
                  int width, int height) {
   if (!src_argb || !dst_rgb565 || width <= 0 || height == 0) {
     return -1;
   }
   if (height < 0) {
     height = -height;
     src_argb = src_argb + (height - 1) * src_stride_argb;
     src_stride_argb = -src_stride_argb;
   }
   // Coalesce rows.
   if (src_stride_argb == width * 4 &&
       dst_stride_rgb565 == width * 2) {
     width *= height;
     height = 1;
     src_stride_argb = dst_stride_rgb565 = 0;
   }
   void (*ARGBToRGB565Row)(const uint8* src_argb, uint8* dst_rgb, int pix) =
       ARGBToRGB565Row_C;
 #if defined(HAS_ARGBTORGB565ROW_SSE2)
   if (TestCpuFlag(kCpuHasSSE2) && width >= 4 &&
       IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16)) {
     ARGBToRGB565Row = ARGBToRGB565Row_Any_SSE2;
     if (IS_ALIGNED(width, 4)) {
       ARGBToRGB565Row = ARGBToRGB565Row_SSE2;
     }
   }
 #elif defined(HAS_ARGBTORGB565ROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGBToRGB565Row = ARGBToRGB565Row_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGBToRGB565Row = ARGBToRGB565Row_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     ARGBToRGB565Row(src_argb, dst_rgb565, width);
     src_argb += src_stride_argb;
     dst_rgb565 += dst_stride_rgb565;
   }
   return 0;
 }
 // Convert ARGB To ARGB1555.
 LIBYUV_API
 int ARGBToARGB1555(const uint8* src_argb, int src_stride_argb,
                    uint8* dst_argb1555, int dst_stride_argb1555,
                    int width, int height) {
   if (!src_argb || !dst_argb1555 || width <= 0 || height == 0) {
     return -1;
   }
   if (height < 0) {
     height = -height;
     src_argb = src_argb + (height - 1) * src_stride_argb;
     src_stride_argb = -src_stride_argb;
   }
   // Coalesce rows.
   if (src_stride_argb == width * 4 &&
       dst_stride_argb1555 == width * 2) {
     width *= height;
     height = 1;
     src_stride_argb = dst_stride_argb1555 = 0;
   }
   void (*ARGBToARGB1555Row)(const uint8* src_argb, uint8* dst_rgb, int pix) =
       ARGBToARGB1555Row_C;
 #if defined(HAS_ARGBTOARGB1555ROW_SSE2)
   if (TestCpuFlag(kCpuHasSSE2) && width >= 4 &&
       IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16)) {
     ARGBToARGB1555Row = ARGBToARGB1555Row_Any_SSE2;
     if (IS_ALIGNED(width, 4)) {
       ARGBToARGB1555Row = ARGBToARGB1555Row_SSE2;
     }
   }
 #elif defined(HAS_ARGBTOARGB1555ROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGBToARGB1555Row = ARGBToARGB1555Row_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGBToARGB1555Row = ARGBToARGB1555Row_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     ARGBToARGB1555Row(src_argb, dst_argb1555, width);
     src_argb += src_stride_argb;
     dst_argb1555 += dst_stride_argb1555;
   }
   return 0;
 }
 // Convert ARGB To ARGB4444.
 LIBYUV_API
 int ARGBToARGB4444(const uint8* src_argb, int src_stride_argb,
                    uint8* dst_argb4444, int dst_stride_argb4444,
                    int width, int height) {
   if (!src_argb || !dst_argb4444 || width <= 0 || height == 0) {
     return -1;
   }
   if (height < 0) {
     height = -height;
     src_argb = src_argb + (height - 1) * src_stride_argb;
     src_stride_argb = -src_stride_argb;
   }
   // Coalesce rows.
   if (src_stride_argb == width * 4 &&
       dst_stride_argb4444 == width * 2) {
     width *= height;
     height = 1;
     src_stride_argb = dst_stride_argb4444 = 0;
   }
   void (*ARGBToARGB4444Row)(const uint8* src_argb, uint8* dst_rgb, int pix) =
       ARGBToARGB4444Row_C;
 #if defined(HAS_ARGBTOARGB4444ROW_SSE2)
   if (TestCpuFlag(kCpuHasSSE2) && width >= 4 &&
       IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16)) {
     ARGBToARGB4444Row = ARGBToARGB4444Row_Any_SSE2;
     if (IS_ALIGNED(width, 4)) {
       ARGBToARGB4444Row = ARGBToARGB4444Row_SSE2;
     }
   }
 #elif defined(HAS_ARGBTOARGB4444ROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGBToARGB4444Row = ARGBToARGB4444Row_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGBToARGB4444Row = ARGBToARGB4444Row_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     ARGBToARGB4444Row(src_argb, dst_argb4444, width);
     src_argb += src_stride_argb;
     dst_argb4444 += dst_stride_argb4444;
   }
   return 0;
 }
 // Convert ARGB to J420. (JPeg full range I420).
 LIBYUV_API
 int ARGBToJ420(const uint8* src_argb, int src_stride_argb,
                uint8* dst_yj, int dst_stride_yj,
                uint8* dst_u, int dst_stride_u,
                uint8* dst_v, int dst_stride_v,
                int width, int height) {
   if (!src_argb ||
       !dst_yj || !dst_u || !dst_v ||
       width <= 0 || height == 0) {
     return -1;
   }
   // Negative height means invert the image.
   if (height < 0) {
     height = -height;
     src_argb = src_argb + (height - 1) * src_stride_argb;
     src_stride_argb = -src_stride_argb;
   }
   void (*ARGBToUVJRow)(const uint8* src_argb0, int src_stride_argb,
                       uint8* dst_u, uint8* dst_v, int width) = ARGBToUVJRow_C;
   void (*ARGBToYJRow)(const uint8* src_argb, uint8* dst_yj, int pix) =
       ARGBToYJRow_C;
 #if defined(HAS_ARGBTOYJROW_SSSE3) && defined(HAS_ARGBTOUVJROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     ARGBToUVJRow = ARGBToUVJRow_Any_SSSE3;
     ARGBToYJRow = ARGBToYJRow_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       ARGBToUVJRow = ARGBToUVJRow_Unaligned_SSSE3;
       ARGBToYJRow = ARGBToYJRow_Unaligned_SSSE3;
       if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16)) {
         ARGBToUVJRow = ARGBToUVJRow_SSSE3;
         if (IS_ALIGNED(dst_yj, 16) && IS_ALIGNED(dst_stride_yj, 16)) {
           ARGBToYJRow = ARGBToYJRow_SSSE3;
         }
       }
     }
   }
 #endif
 #if defined(HAS_ARGBTOYJROW_AVX2) && defined(HAS_ARGBTOUVJROW_AVX2)
   if (TestCpuFlag(kCpuHasAVX2) && width >= 32) {
     ARGBToYJRow = ARGBToYJRow_Any_AVX2;
     if (IS_ALIGNED(width, 32)) {
       ARGBToYJRow = ARGBToYJRow_AVX2;
     }
   }
 #endif
 #if defined(HAS_ARGBTOYJROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGBToYJRow = ARGBToYJRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGBToYJRow = ARGBToYJRow_NEON;
     }
     if (width >= 16) {
       ARGBToUVJRow = ARGBToUVJRow_Any_NEON;
       if (IS_ALIGNED(width, 16)) {
         ARGBToUVJRow = ARGBToUVJRow_NEON;
       }
     }
   }
 #endif
   for (int y = 0; y < height - 1; y += 2) {
     ARGBToUVJRow(src_argb, src_stride_argb, dst_u, dst_v, width);
     ARGBToYJRow(src_argb, dst_yj, width);
     ARGBToYJRow(src_argb + src_stride_argb, dst_yj + dst_stride_yj, width);
     src_argb += src_stride_argb * 2;
     dst_yj += dst_stride_yj * 2;
     dst_u += dst_stride_u;
     dst_v += dst_stride_v;
   }
   if (height & 1) {
     ARGBToUVJRow(src_argb, 0, dst_u, dst_v, width);
     ARGBToYJRow(src_argb, dst_yj, width);
   }
   return 0;
 }
 // Convert ARGB to J400.
 LIBYUV_API
 int ARGBToJ400(const uint8* src_argb, int src_stride_argb,
                uint8* dst_yj, int dst_stride_yj,
                int width, int height) {
   if (!src_argb || !dst_yj || width <= 0 || height == 0) {
     return -1;
   }
   if (height < 0) {
     height = -height;
     src_argb = src_argb + (height - 1) * src_stride_argb;
     src_stride_argb = -src_stride_argb;
   }
   // Coalesce rows.
   if (src_stride_argb == width * 4 &&
       dst_stride_yj == width) {
     width *= height;
     height = 1;
     src_stride_argb = dst_stride_yj = 0;
   }
   void (*ARGBToYJRow)(const uint8* src_argb, uint8* dst_yj, int pix) =
       ARGBToYJRow_C;
 #if defined(HAS_ARGBTOYJROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     ARGBToYJRow = ARGBToYJRow_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       ARGBToYJRow = ARGBToYJRow_Unaligned_SSSE3;
       if (IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16) &&
           IS_ALIGNED(dst_yj, 16) && IS_ALIGNED(dst_stride_yj, 16)) {
         ARGBToYJRow = ARGBToYJRow_SSSE3;
       }
     }
   }
 #endif
 #if defined(HAS_ARGBTOYJROW_AVX2)
   if (TestCpuFlag(kCpuHasAVX2) && width >= 32) {
     ARGBToYJRow = ARGBToYJRow_Any_AVX2;
     if (IS_ALIGNED(width, 32)) {
       ARGBToYJRow = ARGBToYJRow_AVX2;
     }
   }
 #endif
 #if defined(HAS_ARGBTOYJROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGBToYJRow = ARGBToYJRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGBToYJRow = ARGBToYJRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     ARGBToYJRow(src_argb, dst_yj, width);
     src_argb += src_stride_argb;
     dst_yj += dst_stride_yj;
   }
   return 0;
 }
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif

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media/libyuv/source/convert_from_argb.cc