Change prototypes to yuv_convert_simd_x86 yasm and equivalent C to portably sign extend int args

media/base/simd/convert_yuv_to_rgb_c.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/base/simd/convert_yuv_to_rgb.h"
 #include "media/base/simd/yuv_to_rgb_table.h"
 
 #define packuswb(x) ((x) < 0 ? 0 : ((x) > 255 ? 255 : (x)))
 #define paddsw(x, y) (((x) + (y)) < -32768 ? -32768 : \
     (((x) + (y)) > 32767 ? 32767 : ((x) + (y))))
@@ skipping 27 matching lines @@
                                         (packuswb(r) << 16) |
                                         (packuswb(a) << 24);
 }
 
 extern "C" {
 
 void ConvertYUVToRGB32Row_C(const uint8* y_buf,
                             const uint8* u_buf,
                             const uint8* v_buf,
                             uint8* rgb_buf,
-                            int width) {
+                            ptrdiff_t width) {
   for (int x = 0; x < width; x += 2) {
     uint8 u = u_buf[x >> 1];
     uint8 v = v_buf[x >> 1];
     uint8 y0 = y_buf[x];
     ConvertYUVToRGB32_C(y0, u, v, rgb_buf);
     if ((x + 1) < width) {
       uint8 y1 = y_buf[x + 1];
       ConvertYUVToRGB32_C(y1, u, v, rgb_buf + 4);
     }
     rgb_buf += 8;  // Advance 2 pixels.
   }
 }
 
 // 16.16 fixed point is used.  A shift by 16 isolates the integer.
 // A shift by 17 is used to further subsample the chrominence channels.
 // & 0xffff isolates the fixed point fraction.  >> 2 to get the upper 2 bits,
 // for 1/65536 pixel accurate interpolation.
 void ScaleYUVToRGB32Row_C(const uint8* y_buf,
                           const uint8* u_buf,
                           const uint8* v_buf,
                           uint8* rgb_buf,
-                          int width,
-                          int source_dx) {
+                          ptrdiff_t width,
+                          ptrdiff_t source_dx) {
   int x = 0;
   for (int i = 0; i < width; i += 2) {
     int y = y_buf[x >> 16];
     int u = u_buf[(x >> 17)];
     int v = v_buf[(x >> 17)];
     ConvertYUVToRGB32_C(y, u, v, rgb_buf);
     x += source_dx;
     if ((i + 1) < width) {
       y = y_buf[x >> 16];
       ConvertYUVToRGB32_C(y, u, v, rgb_buf+4);
       x += source_dx;
     }
     rgb_buf += 8;
   }
 }
 
 void LinearScaleYUVToRGB32Row_C(const uint8* y_buf,
                                 const uint8* u_buf,
                                 const uint8* v_buf,
                                 uint8* rgb_buf,
-                                int width,
-                                int source_dx) {
+                                ptrdiff_t width,
+                                ptrdiff_t source_dx) {
   // Avoid point-sampling for down-scaling by > 2:1.
   int source_x = 0;
   if (source_dx >= 0x20000)
     source_x += 0x8000;
   LinearScaleYUVToRGB32RowWithRange_C(y_buf, u_buf, v_buf, rgb_buf, width,
                                       source_x, source_dx);
 }
 
 void LinearScaleYUVToRGB32RowWithRange_C(const uint8* y_buf,
                                          const uint8* u_buf,
@@ skipping 51 matching lines @@
 
     ConvertYUVToRGB32Row_C(y_ptr,
                            u_ptr,
                            v_ptr,
                            rgb_row,
                            width);
   }
 }
 
 }  // namespace media