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

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

media/libyuv/source/convert_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 2011 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_argb.h"
 #include "libyuv/cpu_id.h"
 #include "libyuv/format_conversion.h"
 #ifdef HAVE_JPEG
 #include "libyuv/mjpeg_decoder.h"
 #endif
 #include "libyuv/rotate_argb.h"
 #include "libyuv/row.h"
 #include "libyuv/video_common.h"
 #ifdef __cplusplus
 namespace libyuv {
 extern "C" {
 #endif
 // Copy ARGB with optional flipping
 LIBYUV_API
 int ARGBCopy(const uint8* src_argb, int src_stride_argb,
              uint8* dst_argb, int dst_stride_argb,
              int width, int height) {
   if (!src_argb || !dst_argb ||
       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;
   }
   CopyPlane(src_argb, src_stride_argb, dst_argb, dst_stride_argb,
             width * 4, height);
   return 0;
 }
 // Convert I444 to ARGB.
 LIBYUV_API
 int I444ToARGB(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;
   }
   // Coalesce rows.
   if (src_stride_y == width &&
       src_stride_u == width &&
       src_stride_v == width &&
       dst_stride_argb == width * 4) {
     width *= height;
     height = 1;
     src_stride_y = src_stride_u = src_stride_v = dst_stride_argb = 0;
   }
   void (*I444ToARGBRow)(const uint8* y_buf,
                         const uint8* u_buf,
                         const uint8* v_buf,
                         uint8* rgb_buf,
                         int width) = I444ToARGBRow_C;
 #if defined(HAS_I444TOARGBROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
     I444ToARGBRow = I444ToARGBRow_Any_SSSE3;
     if (IS_ALIGNED(width, 8)) {
       I444ToARGBRow = I444ToARGBRow_Unaligned_SSSE3;
       if (IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
         I444ToARGBRow = I444ToARGBRow_SSSE3;
       }
     }
   }
 #elif defined(HAS_I444TOARGBROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     I444ToARGBRow = I444ToARGBRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       I444ToARGBRow = I444ToARGBRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     I444ToARGBRow(src_y, src_u, src_v, dst_argb, width);
     dst_argb += dst_stride_argb;
     src_y += src_stride_y;
     src_u += src_stride_u;
     src_v += src_stride_v;
   }
   return 0;
 }
 // Convert I422 to ARGB.
 LIBYUV_API
 int I422ToARGB(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;
   }
   // Coalesce rows.
   if (src_stride_y == width &&
       src_stride_u * 2 == width &&
       src_stride_v * 2 == width &&
       dst_stride_argb == width * 4) {
     width *= height;
     height = 1;
     src_stride_y = src_stride_u = src_stride_v = dst_stride_argb = 0;
   }
   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;
     src_u += src_stride_u;
     src_v += src_stride_v;
   }
   return 0;
 }
 // Convert I411 to ARGB.
 LIBYUV_API
 int I411ToARGB(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;
   }
   // Coalesce rows.
   if (src_stride_y == width &&
       src_stride_u * 4 == width &&
       src_stride_v * 4 == width &&
       dst_stride_argb == width * 4) {
     width *= height;
     height = 1;
     src_stride_y = src_stride_u = src_stride_v = dst_stride_argb = 0;
   }
   void (*I411ToARGBRow)(const uint8* y_buf,
                         const uint8* u_buf,
                         const uint8* v_buf,
                         uint8* rgb_buf,
                         int width) = I411ToARGBRow_C;
 #if defined(HAS_I411TOARGBROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
     I411ToARGBRow = I411ToARGBRow_Any_SSSE3;
     if (IS_ALIGNED(width, 8)) {
       I411ToARGBRow = I411ToARGBRow_Unaligned_SSSE3;
       if (IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
         I411ToARGBRow = I411ToARGBRow_SSSE3;
       }
     }
   }
 #elif defined(HAS_I411TOARGBROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     I411ToARGBRow = I411ToARGBRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       I411ToARGBRow = I411ToARGBRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     I411ToARGBRow(src_y, src_u, src_v, dst_argb, width);
     dst_argb += dst_stride_argb;
     src_y += src_stride_y;
     src_u += src_stride_u;
     src_v += src_stride_v;
   }
   return 0;
 }
 // Convert I400 to ARGB.
 LIBYUV_API
 int I400ToARGB_Reference(const uint8* src_y, int src_stride_y,
                          uint8* dst_argb, int dst_stride_argb,
                          int width, int height) {
   if (!src_y || !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;
   }
   // Coalesce rows.
   if (src_stride_y == width &&
       dst_stride_argb == width * 4) {
     width *= height;
     height = 1;
     src_stride_y = dst_stride_argb = 0;
   }
   void (*YToARGBRow)(const uint8* y_buf,
                      uint8* rgb_buf,
                      int width) = YToARGBRow_C;
 #if defined(HAS_YTOARGBROW_SSE2)
   if (TestCpuFlag(kCpuHasSSE2) && width >= 8 &&
       IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
     YToARGBRow = YToARGBRow_Any_SSE2;
     if (IS_ALIGNED(width, 8)) {
       YToARGBRow = YToARGBRow_SSE2;
     }
   }
 #elif defined(HAS_YTOARGBROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     YToARGBRow = YToARGBRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       YToARGBRow = YToARGBRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     YToARGBRow(src_y, dst_argb, width);
     dst_argb += dst_stride_argb;
     src_y += src_stride_y;
   }
   return 0;
 }
 // Convert I400 to ARGB.
 LIBYUV_API
 int I400ToARGB(const uint8* src_y, int src_stride_y,
                uint8* dst_argb, int dst_stride_argb,
                int width, int height) {
   if (!src_y || !dst_argb ||
       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;
   }
   // Coalesce rows.
   if (src_stride_y == width &&
       dst_stride_argb == width * 4) {
     width *= height;
     height = 1;
     src_stride_y = dst_stride_argb = 0;
   }
   void (*I400ToARGBRow)(const uint8* src_y, uint8* dst_argb, int pix) =
       I400ToARGBRow_C;
 #if defined(HAS_I400TOARGBROW_SSE2)
   if (TestCpuFlag(kCpuHasSSE2) && width >= 8) {
     I400ToARGBRow = I400ToARGBRow_Any_SSE2;
     if (IS_ALIGNED(width, 8)) {
       I400ToARGBRow = I400ToARGBRow_Unaligned_SSE2;
       if (IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
         I400ToARGBRow = I400ToARGBRow_SSE2;
       }
     }
   }
 #elif defined(HAS_I400TOARGBROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     I400ToARGBRow = I400ToARGBRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       I400ToARGBRow = I400ToARGBRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     I400ToARGBRow(src_y, dst_argb, width);
     src_y += src_stride_y;
     dst_argb += dst_stride_argb;
   }
   return 0;
 }
 // Shuffle table for converting BGRA to ARGB.
 static uvec8 kShuffleMaskBGRAToARGB = {
 u, 2u, 1u, 0u, 7u, 6u, 5u, 4u, 11u, 10u, 9u, 8u, 15u, 14u, 13u, 12u
 };
 // Shuffle table for converting ABGR to ARGB.
 static uvec8 kShuffleMaskABGRToARGB = {
 u, 1u, 0u, 3u, 6u, 5u, 4u, 7u, 10u, 9u, 8u, 11u, 14u, 13u, 12u, 15u
 };
 // Shuffle table for converting RGBA to ARGB.
 static uvec8 kShuffleMaskRGBAToARGB = {
 u, 2u, 3u, 0u, 5u, 6u, 7u, 4u, 9u, 10u, 11u, 8u, 13u, 14u, 15u, 12u
 };
 // Convert BGRA to ARGB.
 LIBYUV_API
 int BGRAToARGB(const uint8* src_bgra, int src_stride_bgra,
                uint8* dst_argb, int dst_stride_argb,
                int width, int height) {
   return ARGBShuffle(src_bgra, src_stride_bgra,
                      dst_argb, dst_stride_argb,
                      (const uint8*)(&kShuffleMaskBGRAToARGB),
                      width, height);
 }
 // Convert ABGR to ARGB.
 LIBYUV_API
 int ABGRToARGB(const uint8* src_abgr, int src_stride_abgr,
                uint8* dst_argb, int dst_stride_argb,
                int width, int height) {
   return ARGBShuffle(src_abgr, src_stride_abgr,
                      dst_argb, dst_stride_argb,
                      (const uint8*)(&kShuffleMaskABGRToARGB),
                      width, height);
 }
 // Convert RGBA to ARGB.
 LIBYUV_API
 int RGBAToARGB(const uint8* src_rgba, int src_stride_rgba,
                uint8* dst_argb, int dst_stride_argb,
                int width, int height) {
   return ARGBShuffle(src_rgba, src_stride_rgba,
                      dst_argb, dst_stride_argb,
                      (const uint8*)(&kShuffleMaskRGBAToARGB),
                      width, height);
 }
 // Convert RGB24 to ARGB.
 LIBYUV_API
 int RGB24ToARGB(const uint8* src_rgb24, int src_stride_rgb24,
                 uint8* dst_argb, int dst_stride_argb,
                 int width, int height) {
   if (!src_rgb24 || !dst_argb ||
       width <= 0 || height == 0) {
     return -1;
   }
   // Negative height means invert the image.
   if (height < 0) {
     height = -height;
     src_rgb24 = src_rgb24 + (height - 1) * src_stride_rgb24;
     src_stride_rgb24 = -src_stride_rgb24;
   }
   // Coalesce rows.
   if (src_stride_rgb24 == width * 3 &&
       dst_stride_argb == width * 4) {
     width *= height;
     height = 1;
     src_stride_rgb24 = dst_stride_argb = 0;
   }
   void (*RGB24ToARGBRow)(const uint8* src_rgb, uint8* dst_argb, int pix) =
       RGB24ToARGBRow_C;
 #if defined(HAS_RGB24TOARGBROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16 &&
       IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
     RGB24ToARGBRow = RGB24ToARGBRow_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       RGB24ToARGBRow = RGB24ToARGBRow_SSSE3;
     }
   }
 #elif defined(HAS_RGB24TOARGBROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     RGB24ToARGBRow = RGB24ToARGBRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       RGB24ToARGBRow = RGB24ToARGBRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     RGB24ToARGBRow(src_rgb24, dst_argb, width);
     src_rgb24 += src_stride_rgb24;
     dst_argb += dst_stride_argb;
   }
   return 0;
 }
 // Convert RAW to ARGB.
 LIBYUV_API
 int RAWToARGB(const uint8* src_raw, int src_stride_raw,
               uint8* dst_argb, int dst_stride_argb,
               int width, int height) {
   if (!src_raw || !dst_argb ||
       width <= 0 || height == 0) {
     return -1;
   }
   // Negative height means invert the image.
   if (height < 0) {
     height = -height;
     src_raw = src_raw + (height - 1) * src_stride_raw;
     src_stride_raw = -src_stride_raw;
   }
   // Coalesce rows.
   if (src_stride_raw == width * 3 &&
       dst_stride_argb == width * 4) {
     width *= height;
     height = 1;
     src_stride_raw = dst_stride_argb = 0;
   }
   void (*RAWToARGBRow)(const uint8* src_rgb, uint8* dst_argb, int pix) =
       RAWToARGBRow_C;
 #if defined(HAS_RAWTOARGBROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16 &&
       IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
     RAWToARGBRow = RAWToARGBRow_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       RAWToARGBRow = RAWToARGBRow_SSSE3;
     }
   }
 #elif defined(HAS_RAWTOARGBROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     RAWToARGBRow = RAWToARGBRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       RAWToARGBRow = RAWToARGBRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     RAWToARGBRow(src_raw, dst_argb, width);
     src_raw += src_stride_raw;
     dst_argb += dst_stride_argb;
   }
   return 0;
 }
 // Convert RGB565 to ARGB.
 LIBYUV_API
 int RGB565ToARGB(const uint8* src_rgb565, int src_stride_rgb565,
                  uint8* dst_argb, int dst_stride_argb,
                  int width, int height) {
   if (!src_rgb565 || !dst_argb ||
       width <= 0 || height == 0) {
     return -1;
   }
   // Negative height means invert the image.
   if (height < 0) {
     height = -height;
     src_rgb565 = src_rgb565 + (height - 1) * src_stride_rgb565;
     src_stride_rgb565 = -src_stride_rgb565;
   }
   // Coalesce rows.
   if (src_stride_rgb565 == width * 2 &&
       dst_stride_argb == width * 4) {
     width *= height;
     height = 1;
     src_stride_rgb565 = dst_stride_argb = 0;
   }
   void (*RGB565ToARGBRow)(const uint8* src_rgb565, uint8* dst_argb, int pix) =
       RGB565ToARGBRow_C;
 #if defined(HAS_RGB565TOARGBROW_SSE2)
   if (TestCpuFlag(kCpuHasSSE2) && width >= 8 &&
       IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
     RGB565ToARGBRow = RGB565ToARGBRow_Any_SSE2;
     if (IS_ALIGNED(width, 8)) {
       RGB565ToARGBRow = RGB565ToARGBRow_SSE2;
     }
   }
 #elif defined(HAS_RGB565TOARGBROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     RGB565ToARGBRow = RGB565ToARGBRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       RGB565ToARGBRow = RGB565ToARGBRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     RGB565ToARGBRow(src_rgb565, dst_argb, width);
     src_rgb565 += src_stride_rgb565;
     dst_argb += dst_stride_argb;
   }
   return 0;
 }
 // Convert ARGB1555 to ARGB.
 LIBYUV_API
 int ARGB1555ToARGB(const uint8* src_argb1555, int src_stride_argb1555,
                    uint8* dst_argb, int dst_stride_argb,
                    int width, int height) {
   if (!src_argb1555 || !dst_argb ||
       width <= 0 || height == 0) {
     return -1;
   }
   // Negative height means invert the image.
   if (height < 0) {
     height = -height;
     src_argb1555 = src_argb1555 + (height - 1) * src_stride_argb1555;
     src_stride_argb1555 = -src_stride_argb1555;
   }
   // Coalesce rows.
   if (src_stride_argb1555 == width * 2 &&
       dst_stride_argb == width * 4) {
     width *= height;
     height = 1;
     src_stride_argb1555 = dst_stride_argb = 0;
   }
   void (*ARGB1555ToARGBRow)(const uint8* src_argb1555, uint8* dst_argb,
                             int pix) = ARGB1555ToARGBRow_C;
 #if defined(HAS_ARGB1555TOARGBROW_SSE2)
   if (TestCpuFlag(kCpuHasSSE2) && width >= 8 &&
       IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
     ARGB1555ToARGBRow = ARGB1555ToARGBRow_Any_SSE2;
     if (IS_ALIGNED(width, 8)) {
       ARGB1555ToARGBRow = ARGB1555ToARGBRow_SSE2;
     }
   }
 #elif defined(HAS_ARGB1555TOARGBROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGB1555ToARGBRow = ARGB1555ToARGBRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGB1555ToARGBRow = ARGB1555ToARGBRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     ARGB1555ToARGBRow(src_argb1555, dst_argb, width);
     src_argb1555 += src_stride_argb1555;
     dst_argb += dst_stride_argb;
   }
   return 0;
 }
 // Convert ARGB4444 to ARGB.
 LIBYUV_API
 int ARGB4444ToARGB(const uint8* src_argb4444, int src_stride_argb4444,
                    uint8* dst_argb, int dst_stride_argb,
                    int width, int height) {
   if (!src_argb4444 || !dst_argb ||
       width <= 0 || height == 0) {
     return -1;
   }
   // Negative height means invert the image.
   if (height < 0) {
     height = -height;
     src_argb4444 = src_argb4444 + (height - 1) * src_stride_argb4444;
     src_stride_argb4444 = -src_stride_argb4444;
   }
   // Coalesce rows.
   if (src_stride_argb4444 == width * 2 &&
       dst_stride_argb == width * 4) {
     width *= height;
     height = 1;
     src_stride_argb4444 = dst_stride_argb = 0;
   }
   void (*ARGB4444ToARGBRow)(const uint8* src_argb4444, uint8* dst_argb,
                             int pix) = ARGB4444ToARGBRow_C;
 #if defined(HAS_ARGB4444TOARGBROW_SSE2)
   if (TestCpuFlag(kCpuHasSSE2) && width >= 8 &&
       IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
     ARGB4444ToARGBRow = ARGB4444ToARGBRow_Any_SSE2;
     if (IS_ALIGNED(width, 8)) {
       ARGB4444ToARGBRow = ARGB4444ToARGBRow_SSE2;
     }
   }
 #elif defined(HAS_ARGB4444TOARGBROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     ARGB4444ToARGBRow = ARGB4444ToARGBRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       ARGB4444ToARGBRow = ARGB4444ToARGBRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     ARGB4444ToARGBRow(src_argb4444, dst_argb, width);
     src_argb4444 += src_stride_argb4444;
     dst_argb += dst_stride_argb;
   }
   return 0;
 }
 // Convert NV12 to ARGB.
 LIBYUV_API
 int NV12ToARGB(const uint8* src_y, int src_stride_y,
                const uint8* src_uv, int src_stride_uv,
                uint8* dst_argb, int dst_stride_argb,
                int width, int height) {
   if (!src_y || !src_uv || !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 (*NV12ToARGBRow)(const uint8* y_buf,
                         const uint8* uv_buf,
                         uint8* rgb_buf,
                         int width) = NV12ToARGBRow_C;
 #if defined(HAS_NV12TOARGBROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
     NV12ToARGBRow = NV12ToARGBRow_Any_SSSE3;
     if (IS_ALIGNED(width, 8)) {
       NV12ToARGBRow = NV12ToARGBRow_Unaligned_SSSE3;
       if (IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
         NV12ToARGBRow = NV12ToARGBRow_SSSE3;
       }
     }
   }
 #elif defined(HAS_NV12TOARGBROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     NV12ToARGBRow = NV12ToARGBRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       NV12ToARGBRow = NV12ToARGBRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     NV12ToARGBRow(src_y, src_uv, dst_argb, width);
     dst_argb += dst_stride_argb;
     src_y += src_stride_y;
     if (y & 1) {
       src_uv += src_stride_uv;
     }
   }
   return 0;
 }
 // Convert NV21 to ARGB.
 LIBYUV_API
 int NV21ToARGB(const uint8* src_y, int src_stride_y,
                const uint8* src_uv, int src_stride_uv,
                uint8* dst_argb, int dst_stride_argb,
                int width, int height) {
   if (!src_y || !src_uv || !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 (*NV21ToARGBRow)(const uint8* y_buf,
                         const uint8* uv_buf,
                         uint8* rgb_buf,
                         int width) = NV21ToARGBRow_C;
 #if defined(HAS_NV21TOARGBROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
     NV21ToARGBRow = NV21ToARGBRow_Any_SSSE3;
     if (IS_ALIGNED(width, 8)) {
       NV21ToARGBRow = NV21ToARGBRow_Unaligned_SSSE3;
       if (IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
         NV21ToARGBRow = NV21ToARGBRow_SSSE3;
       }
     }
   }
 #endif
 #if defined(HAS_NV21TOARGBROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     NV21ToARGBRow = NV21ToARGBRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       NV21ToARGBRow = NV21ToARGBRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     NV21ToARGBRow(src_y, src_uv, dst_argb, width);
     dst_argb += dst_stride_argb;
     src_y += src_stride_y;
     if (y & 1) {
       src_uv += src_stride_uv;
     }
   }
   return 0;
 }
 // Convert M420 to ARGB.
 LIBYUV_API
 int M420ToARGB(const uint8* src_m420, int src_stride_m420,
                uint8* dst_argb, int dst_stride_argb,
                int width, int height) {
   if (!src_m420 || !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 (*NV12ToARGBRow)(const uint8* y_buf,
                         const uint8* uv_buf,
                         uint8* rgb_buf,
                         int width) = NV12ToARGBRow_C;
 #if defined(HAS_NV12TOARGBROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
     NV12ToARGBRow = NV12ToARGBRow_Any_SSSE3;
     if (IS_ALIGNED(width, 8)) {
       NV12ToARGBRow = NV12ToARGBRow_Unaligned_SSSE3;
       if (IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
         NV12ToARGBRow = NV12ToARGBRow_SSSE3;
       }
     }
   }
 #elif defined(HAS_NV12TOARGBROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     NV12ToARGBRow = NV12ToARGBRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       NV12ToARGBRow = NV12ToARGBRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height - 1; y += 2) {
     NV12ToARGBRow(src_m420, src_m420 + src_stride_m420 * 2, dst_argb, width);
     NV12ToARGBRow(src_m420 + src_stride_m420, src_m420 + src_stride_m420 * 2,
                   dst_argb + dst_stride_argb, width);
     dst_argb += dst_stride_argb * 2;
     src_m420 += src_stride_m420 * 3;
   }
   if (height & 1) {
     NV12ToARGBRow(src_m420, src_m420 + src_stride_m420 * 2, dst_argb, width);
   }
   return 0;
 }
 // Convert YUY2 to ARGB.
 LIBYUV_API
 int YUY2ToARGB(const uint8* src_yuy2, int src_stride_yuy2,
                uint8* dst_argb, int dst_stride_argb,
                int width, int height) {
   if (!src_yuy2 || !dst_argb ||
       width <= 0 || height == 0) {
     return -1;
   }
   // Negative height means invert the image.
   if (height < 0) {
     height = -height;
     src_yuy2 = src_yuy2 + (height - 1) * src_stride_yuy2;
     src_stride_yuy2 = -src_stride_yuy2;
   }
   // Coalesce rows.
   if (src_stride_yuy2 == width * 2 &&
       dst_stride_argb == width * 4) {
     width *= height;
     height = 1;
     src_stride_yuy2 = dst_stride_argb = 0;
   }
   void (*YUY2ToARGBRow)(const uint8* src_yuy2, uint8* dst_argb, int pix) =
       YUY2ToARGBRow_C;
 #if defined(HAS_YUY2TOARGBROW_SSSE3)
   // Posix is 16, Windows is 8.
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     YUY2ToARGBRow = YUY2ToARGBRow_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       YUY2ToARGBRow = YUY2ToARGBRow_Unaligned_SSSE3;
       if (IS_ALIGNED(src_yuy2, 16) && IS_ALIGNED(src_stride_yuy2, 16) &&
           IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
         YUY2ToARGBRow = YUY2ToARGBRow_SSSE3;
       }
     }
   }
 #elif defined(HAS_YUY2TOARGBROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     YUY2ToARGBRow = YUY2ToARGBRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       YUY2ToARGBRow = YUY2ToARGBRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     YUY2ToARGBRow(src_yuy2, dst_argb, width);
     src_yuy2 += src_stride_yuy2;
     dst_argb += dst_stride_argb;
   }
   return 0;
 }
 // Convert UYVY to ARGB.
 LIBYUV_API
 int UYVYToARGB(const uint8* src_uyvy, int src_stride_uyvy,
                uint8* dst_argb, int dst_stride_argb,
                int width, int height) {
   if (!src_uyvy || !dst_argb ||
       width <= 0 || height == 0) {
     return -1;
   }
   // Negative height means invert the image.
   if (height < 0) {
     height = -height;
     src_uyvy = src_uyvy + (height - 1) * src_stride_uyvy;
     src_stride_uyvy = -src_stride_uyvy;
   }
   // Coalesce rows.
   if (src_stride_uyvy == width * 2 &&
       dst_stride_argb == width * 4) {
     width *= height;
     height = 1;
     src_stride_uyvy = dst_stride_argb = 0;
   }
   void (*UYVYToARGBRow)(const uint8* src_uyvy, uint8* dst_argb, int pix) =
       UYVYToARGBRow_C;
 #if defined(HAS_UYVYTOARGBROW_SSSE3)
   // Posix is 16, Windows is 8.
   if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
     UYVYToARGBRow = UYVYToARGBRow_Any_SSSE3;
     if (IS_ALIGNED(width, 16)) {
       UYVYToARGBRow = UYVYToARGBRow_Unaligned_SSSE3;
       if (IS_ALIGNED(src_uyvy, 16) && IS_ALIGNED(src_stride_uyvy, 16) &&
           IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
         UYVYToARGBRow = UYVYToARGBRow_SSSE3;
       }
     }
   }
 #elif defined(HAS_UYVYTOARGBROW_NEON)
   if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
     UYVYToARGBRow = UYVYToARGBRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
       UYVYToARGBRow = UYVYToARGBRow_NEON;
     }
   }
 #endif
   for (int y = 0; y < height; ++y) {
     UYVYToARGBRow(src_uyvy, dst_argb, width);
     src_uyvy += src_stride_uyvy;
     dst_argb += dst_stride_argb;
   }
   return 0;
 }
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif

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media/libyuv/source/convert_argb.cc