Add support for Rec709 color space videos in software YUV convert path.

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"
 
 namespace media {
 
 #define packuswb(x) ((x) < 0 ? 0 : ((x) > 255 ? 255 : (x)))
 #define paddsw(x, y) (((x) + (y)) < -32768 ? -32768 : \
     (((x) + (y)) > 32767 ? 32767 : ((x) + (y))))
 
 // On Android, pixel layout is RGBA (see skia/include/core/SkColorPriv.h);
 // however, other Chrome platforms use BGRA (see skia/config/SkUserConfig.h).
 // Ideally, android should not use the functions here due to performance issue
@@ skipping 15 matching lines @@
 #define B_INDEX         0
 #define G_INDEX         1
 #define R_INDEX         2
 #define A_INDEX         3
 #endif
 
 static inline void ConvertYUVToRGB32_C(uint8 y,
                                        uint8 u,
                                        uint8 v,
                                        uint8* rgb_buf,
-                                       const int16 convert_table[1024][4]) {
-  int b = convert_table[256+u][B_INDEX];
-  int g = convert_table[256+u][G_INDEX];
-  int r = convert_table[256+u][R_INDEX];
-  int a = convert_table[256+u][A_INDEX];
+                                       const int16* convert_table) {
+  int b = convert_table[4 * (256 + u) + B_INDEX];
+  int g = convert_table[4 * (256 + u) + G_INDEX];
+  int r = convert_table[4 * (256 + u) + R_INDEX];
+  int a = convert_table[4 * (256 + u) + A_INDEX];
 
-  b = paddsw(b, convert_table[512+v][B_INDEX]);
-  g = paddsw(g, convert_table[512+v][G_INDEX]);
-  r = paddsw(r, convert_table[512+v][R_INDEX]);
-  a = paddsw(a, convert_table[512+v][A_INDEX]);
+  b = paddsw(b, convert_table[4 * (512 + v) + B_INDEX]);
+  g = paddsw(g, convert_table[4 * (512 + v) + G_INDEX]);
+  r = paddsw(r, convert_table[4 * (512 + v) + R_INDEX]);
+  a = paddsw(a, convert_table[4 * (512 + v) + A_INDEX]);
 
-  b = paddsw(b, convert_table[y][B_INDEX]);
-  g = paddsw(g, convert_table[y][G_INDEX]);
-  r = paddsw(r, convert_table[y][R_INDEX]);
-  a = paddsw(a, convert_table[y][A_INDEX]);
+  b = paddsw(b, convert_table[4 * y + B_INDEX]);
+  g = paddsw(g, convert_table[4 * y + G_INDEX]);
+  r = paddsw(r, convert_table[4 * y + R_INDEX]);
+  a = paddsw(a, convert_table[4 * y + A_INDEX]);
 
   b >>= 6;
   g >>= 6;
   r >>= 6;
   a >>= 6;
 
   *reinterpret_cast<uint32*>(rgb_buf) = (packuswb(b) << SK_B32_SHIFT) |
                                         (packuswb(g) << SK_G32_SHIFT) |
                                         (packuswb(r) << SK_R32_SHIFT) |
                                         (packuswb(a) << SK_A32_SHIFT);
 }
 
 static inline void ConvertYUVAToARGB_C(uint8 y,
                                        uint8 u,
                                        uint8 v,
                                        uint8 a,
                                        uint8* rgb_buf,
-                                       const int16 convert_table[1024][4]) {
-  int b = convert_table[256+u][0];
-  int g = convert_table[256+u][1];
-  int r = convert_table[256+u][2];
+                                       const int16* convert_table) {
+  int b = convert_table[4 * (256 + u) + 0];
+  int g = convert_table[4 * (256 + u) + 1];
+  int r = convert_table[4 * (256 + u) + 2];
 
-  b = paddsw(b, convert_table[512+v][0]);
-  g = paddsw(g, convert_table[512+v][1]);
-  r = paddsw(r, convert_table[512+v][2]);
+  b = paddsw(b, convert_table[4 * (512 + v) + 0]);
+  g = paddsw(g, convert_table[4 * (512 + v) + 1]);
+  r = paddsw(r, convert_table[4 * (512 + v) + 2]);
 
-  b = paddsw(b, convert_table[y][0]);
-  g = paddsw(g, convert_table[y][1]);
-  r = paddsw(r, convert_table[y][2]);
+  b = paddsw(b, convert_table[4 * y + 0]);
+  g = paddsw(g, convert_table[4 * y + 1]);
+  r = paddsw(r, convert_table[4 * y + 2]);
 
   b >>= 6;
   g >>= 6;
   r >>= 6;
 
   b = packuswb(b) * a >> 8;
   g = packuswb(g) * a >> 8;
   r = packuswb(r) * a >> 8;
 
   *reinterpret_cast<uint32*>(rgb_buf) = (b << SK_B32_SHIFT) |
                                         (g << SK_G32_SHIFT) |
                                         (r << SK_R32_SHIFT) |
                                         (a << SK_A32_SHIFT);
 }
 
 void ConvertYUVToRGB32Row_C(const uint8* y_buf,
                             const uint8* u_buf,
                             const uint8* v_buf,
                             uint8* rgb_buf,
                             ptrdiff_t width,
-                            const int16 convert_table[1024][4]) {
+                            const int16* convert_table) {
   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, convert_table);
     if ((x + 1) < width) {
       uint8 y1 = y_buf[x + 1];
       ConvertYUVToRGB32_C(y1, u, v, rgb_buf + 4, convert_table);
     }
     rgb_buf += 8;  // Advance 2 pixels.
   }
 }
 
 void ConvertYUVAToARGBRow_C(const uint8* y_buf,
                             const uint8* u_buf,
                             const uint8* v_buf,
                             const uint8* a_buf,
                             uint8* rgba_buf,
                             ptrdiff_t width,
-                            const int16 convert_table[1024][4]) {
+                            const int16* convert_table) {
   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];
     uint8 a0 = a_buf[x];
     ConvertYUVAToARGB_C(y0, u, v, a0, rgba_buf, convert_table);
     if ((x + 1) < width) {
       uint8 y1 = y_buf[x + 1];
       uint8 a1 = a_buf[x + 1];
       ConvertYUVAToARGB_C(y1, u, v, a1, rgba_buf + 4, convert_table);
     }
     rgba_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,
                           ptrdiff_t width,
                           ptrdiff_t source_dx,
-                          const int16 convert_table[1024][4]) {
+                          const int16* convert_table) {
   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, convert_table);
     x += source_dx;
     if ((i + 1) < width) {
       y = y_buf[x >> 16];
       ConvertYUVToRGB32_C(y, u, v, rgb_buf+4, convert_table);
       x += source_dx;
     }
     rgb_buf += 8;
   }
 }
 
 void LinearScaleYUVToRGB32Row_C(const uint8* y_buf,
                                 const uint8* u_buf,
                                 const uint8* v_buf,
                                 uint8* rgb_buf,
                                 ptrdiff_t width,
                                 ptrdiff_t source_dx,
-                                const int16 convert_table[1024][4]) {
+                                const int16* convert_table) {
   // 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, convert_table);
 }
 
 void LinearScaleYUVToRGB32RowWithRange_C(const uint8* y_buf,
                                          const uint8* u_buf,
                                          const uint8* v_buf,
                                          uint8* rgb_buf,
                                          int dest_width,
                                          int x,
                                          int source_dx,
-                                         const int16 convert_table[1024][4]) {
+                                         const int16* convert_table) {
   for (int i = 0; i < dest_width; i += 2) {
     int y0 = y_buf[x >> 16];
     int y1 = y_buf[(x >> 16) + 1];
     int u0 = u_buf[(x >> 17)];
     int u1 = u_buf[(x >> 17) + 1];
     int v0 = v_buf[(x >> 17)];
     int v1 = v_buf[(x >> 17) + 1];
     int y_frac = (x & 65535);
     int uv_frac = ((x >> 1) & 65535);
     int y = (y_frac * y1 + (y_frac ^ 65535) * y0) >> 16;
@@ skipping 17 matching lines @@
                          const uint8* uplane,
                          const uint8* vplane,
                          uint8* rgbframe,
                          int width,
                          int height,
                          int ystride,
                          int uvstride,
                          int rgbstride,
                          YUVType yuv_type) {
   unsigned int y_shift = GetVerticalShift(yuv_type);
+  const int16* lookup_table = GetLookupTable(yuv_type);
   for (int y = 0; y < height; ++y) {
     uint8* rgb_row = rgbframe + y * rgbstride;
     const uint8* y_ptr = yplane + y * ystride;
     const uint8* u_ptr = uplane + (y >> y_shift) * uvstride;
     const uint8* v_ptr = vplane + (y >> y_shift) * uvstride;
 
     ConvertYUVToRGB32Row_C(y_ptr,
                            u_ptr,
                            v_ptr,
                            rgb_row,
                            width,
-                           GetLookupTable(yuv_type));
+                           lookup_table);
   }
 }
 
 void ConvertYUVAToARGB_C(const uint8* yplane,
                          const uint8* uplane,
                          const uint8* vplane,
                          const uint8* aplane,
                          uint8* rgbaframe,
                          int width,
                          int height,
                          int ystride,
                          int uvstride,
                          int astride,
                          int rgbastride,
                          YUVType yuv_type) {
-  unsigned int y_shift = yuv_type;
+  unsigned int y_shift = GetVerticalShift(yuv_type);
+  const int16* lookup_table = GetLookupTable(yuv_type);
   for (int y = 0; y < height; y++) {
     uint8* rgba_row = rgbaframe + y * rgbastride;
     const uint8* y_ptr = yplane + y * ystride;
     const uint8* u_ptr = uplane + (y >> y_shift) * uvstride;
     const uint8* v_ptr = vplane + (y >> y_shift) * uvstride;
     const uint8* a_ptr = aplane + y * astride;
 
     ConvertYUVAToARGBRow_C(y_ptr,
                            u_ptr,
                            v_ptr,
                            a_ptr,
                            rgba_row,
                            width,
-                           GetLookupTable(yuv_type));
+                           lookup_table);
   }
 }
 
 }  // namespace media