Mesa (master): util: Remove u_tile.c YCbCr's.

[Jose Fonseca]

Module: Mesa
Branch: master
Commit: ecdd6bc3e297375d288a9e19e6ca356b7fadcbd4
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=ecdd6bc3e297375d288a9e19e6ca356b7fadcbd4

Author: José Fonseca <jfonseca at vmware.com>
Date:   Wed Apr  7 19:58:18 2010 +0100

util: Remove u_tile.c YCbCr's.

Superseded by u_format_yuv.c. Also PIPE_FORMAT_YUYV's interpretation was
inconsistent: it was being interpreted as VYUY.

---

 src/gallium/auxiliary/util/u_format.csv |    2 -
 src/gallium/auxiliary/util/u_tile.c     |   94 -------------------------------
 2 files changed, 0 insertions(+), 96 deletions(-)

diff --git a/src/gallium/auxiliary/util/u_format.csv b/src/gallium/auxiliary/util/u_format.csv
index 0cf5392..f23352f 100644
--- a/src/gallium/auxiliary/util/u_format.csv
+++ b/src/gallium/auxiliary/util/u_format.csv
@@ -111,8 +111,6 @@ PIPE_FORMAT_Z32_FLOAT_S8X24_USCALED , plain, 1, 1, f32,  u8  , x24 ,     , xy__,
 # http://www.fourcc.org/yuv.php#UYVY
 PIPE_FORMAT_UYVY                 , subsampled, 2, 1, x32 ,     ,     ,     , xyz1, yuv
 # http://www.fourcc.org/yuv.php#YUYV (a.k.a http://www.fourcc.org/yuv.php#YUY2)
-# XXX: u_tile.c's ycbcr_get_tile_rgba actually interprets it as VYUY but the 
-# intent should be to match D3DFMT_YUY2
 PIPE_FORMAT_YUYV                 , subsampled, 2, 1, x32 ,     ,     ,     , xyz1, yuv
 # same subsampling but with rgb channels
 PIPE_FORMAT_R8G8_B8G8_UNORM      , subsampled, 2, 1, x32 ,     ,     ,     , xyz1, rgb
diff --git a/src/gallium/auxiliary/util/u_tile.c b/src/gallium/auxiliary/util/u_tile.c
index 9f2bb81..88a1424 100644
--- a/src/gallium/auxiliary/util/u_tile.c
+++ b/src/gallium/auxiliary/util/u_tile.c
@@ -244,94 +244,6 @@ z32f_get_tile_rgba(const float *src,
 }
 
 
-/*** PIPE_FORMAT_UYVY / PIPE_FORMAT_YUYV ***/
-
-/**
- * Convert YCbCr (or YCrCb) to RGBA.
- */
-static void
-ycbcr_get_tile_rgba(const ushort *src,
-                    unsigned w, unsigned h,
-                    float *p,
-                    unsigned dst_stride,
-                    boolean rev)
-{
-   const float scale = 1.0f / 255.0f;
-   unsigned i, j;
-
-   for (i = 0; i < h; i++) {
-      float *pRow = p;
-      /* do two texels at a time */
-      for (j = 0; j < (w & ~1); j += 2, src += 2) {
-         const ushort t0 = src[0];
-         const ushort t1 = src[1];
-         const ubyte y0 = (t0 >> 8) & 0xff;  /* luminance */
-         const ubyte y1 = (t1 >> 8) & 0xff;  /* luminance */
-         ubyte cb, cr;
-         float r, g, b;
-
-         if (rev) {
-            cb = t1 & 0xff;         /* chroma U */
-            cr = t0 & 0xff;         /* chroma V */
-         }
-         else {
-            cb = t0 & 0xff;         /* chroma U */
-            cr = t1 & 0xff;         /* chroma V */
-         }
-
-         /* even pixel: y0,cr,cb */
-         r = 1.164f * (y0-16) + 1.596f * (cr-128);
-         g = 1.164f * (y0-16) - 0.813f * (cr-128) - 0.391f * (cb-128);
-         b = 1.164f * (y0-16) + 2.018f * (cb-128);
-         pRow[0] = r * scale;
-         pRow[1] = g * scale;
-         pRow[2] = b * scale;
-         pRow[3] = 1.0f;
-         pRow += 4;
-
-         /* odd pixel: use y1,cr,cb */
-         r = 1.164f * (y1-16) + 1.596f * (cr-128);
-         g = 1.164f * (y1-16) - 0.813f * (cr-128) - 0.391f * (cb-128);
-         b = 1.164f * (y1-16) + 2.018f * (cb-128);
-         pRow[0] = r * scale;
-         pRow[1] = g * scale;
-         pRow[2] = b * scale;
-         pRow[3] = 1.0f;
-         pRow += 4;
-
-      }
-      /* do the last texel */
-      if (w & 1) {
-         const ushort t0 = src[0];
-         const ushort t1 = src[1];
-         const ubyte y0 = (t0 >> 8) & 0xff;  /* luminance */
-         ubyte cb, cr;
-         float r, g, b;
-
-         if (rev) {
-            cb = t1 & 0xff;         /* chroma U */
-            cr = t0 & 0xff;         /* chroma V */
-         }
-         else {
-            cb = t0 & 0xff;         /* chroma U */
-            cr = t1 & 0xff;         /* chroma V */
-         }
-
-         /* even pixel: y0,cr,cb */
-         r = 1.164f * (y0-16) + 1.596f * (cr-128);
-         g = 1.164f * (y0-16) - 0.813f * (cr-128) - 0.391f * (cb-128);
-         b = 1.164f * (y0-16) + 2.018f * (cb-128);
-         pRow[0] = r * scale;
-         pRow[1] = g * scale;
-         pRow[2] = b * scale;
-         pRow[3] = 1.0f;
-         pRow += 4;
-      }
-      p += dst_stride;
-   }
-}
-
-
 void
 pipe_tile_raw_to_rgba(enum pipe_format format,
                       void *src,
@@ -356,12 +268,6 @@ pipe_tile_raw_to_rgba(enum pipe_format format,
    case PIPE_FORMAT_Z32_FLOAT:
       z32f_get_tile_rgba((float *) src, w, h, dst, dst_stride);
       break;
-   case PIPE_FORMAT_UYVY:
-      ycbcr_get_tile_rgba((ushort *) src, w, h, dst, dst_stride, FALSE);
-      break;
-   case PIPE_FORMAT_YUYV:
-      ycbcr_get_tile_rgba((ushort *) src, w, h, dst, dst_stride, TRUE);
-      break;
    default:
       util_format_read_4f(format,
                           dst, dst_stride * sizeof(float),