util: Implement YUV and subsampled RGB format conversion.

1 files changed, 1047 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/util/u_format_yuv.c b/src/gallium/auxiliary/util/u_format_yuv.c
new file mode 100644
index 0000000000..0847476e2e
--- /dev/null
+++ b/src/gallium/auxiliary/util/u_format_yuv.c
@@ -0,0 +1,1047 @@
+/**************************************************************************
+ *
+ * Copyright 2010 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ **************************************************************************/
+
+
+/**
+ * @file
+ * YUV and RGB subsampled formats conversion.
+ *
+ * @author Jose Fonseca <jfonseca@vmware.com>
+ */
+
+
+#include "util/u_format_yuv.h"
+
+
+void
+util_format_r8g8_b8g8_unorm_unpack_float(float *dst_row, unsigned dst_stride,
+                                         const uint8_t *src_row, unsigned src_stride,
+                                         unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for (y = 0; y < height; y += 1) {
+      float *dst = dst_row;
+      const uint32_t *src = (const uint32_t *)src_row;
+      uint32_t value;
+      float r, g0, g1, b;
+
+      for (x = 0; x + 1 < width; x += 2) {
+         value = *src++;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         r  = ubyte_to_float((value >>  0) & 0xff);
+         g0 = ubyte_to_float((value >>  8) & 0xff);
+         b  = ubyte_to_float((value >> 16) & 0xff);
+         g1 = ubyte_to_float((value >> 24) & 0xff);
+
+         dst[0] = r;    /* r */
+         dst[1] = g0;   /* g */
+         dst[2] = b;    /* b */
+         dst[3] = 1.0f; /* a */
+         dst += 4;
+
+         dst[0] = r;    /* r */
+         dst[1] = g1;   /* g */
+         dst[2] = b;    /* b */
+         dst[3] = 1.0f; /* a */
+         dst += 4;
+      }
+
+      if (x < width) {
+         value = *src;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         r  = ubyte_to_float((value >>  0) & 0xff);
+         g0 = ubyte_to_float((value >>  8) & 0xff);
+         b  = ubyte_to_float((value >> 16) & 0xff);
+         g1 = ubyte_to_float((value >> 24) & 0xff);
+
+         dst[0] = r;    /* r */
+         dst[1] = g0;   /* g */
+         dst[2] = b;    /* b */
+         dst[3] = 1.0f; /* a */
+      }
+
+      src_row += src_stride/sizeof(*src_row);
+      dst_row += dst_stride/sizeof(*dst_row);
+   }
+}
+
+
+void
+util_format_r8g8_b8g8_unorm_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride,
+                                          const uint8_t *src_row, unsigned src_stride,
+                                          unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for (y = 0; y < height; y += 1) {
+      uint8_t *dst = dst_row;
+      const uint32_t *src = (const uint32_t *)src_row;
+      uint32_t value;
+      uint8_t r, g0, g1, b;
+
+      for (x = 0; x + 1 < width; x += 2) {
+         value = *src++;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         r  = (value >>  0) & 0xff;
+         g0 = (value >>  8) & 0xff;
+         b  = (value >> 16) & 0xff;
+         g1 = (value >> 24) & 0xff;
+
+         dst[0] = r;    /* r */
+         dst[1] = g0;   /* g */
+         dst[2] = b;    /* b */
+         dst[3] = 0xff; /* a */
+         dst += 4;
+
+         dst[0] = r;    /* r */
+         dst[1] = g1;   /* g */
+         dst[2] = b;    /* b */
+         dst[3] = 0xff; /* a */
+         dst += 4;
+      }
+
+      if (x < width) {
+         value = *src;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         r  = (value >>  0) & 0xff;
+         g0 = (value >>  8) & 0xff;
+         b  = (value >> 16) & 0xff;
+         g1 = (value >> 24) & 0xff;
+
+         dst[0] = r;    /* r */
+         dst[1] = g0;   /* g */
+         dst[2] = b;    /* b */
+         dst[3] = 0xff; /* a */
+      }
+
+      src_row += src_stride/sizeof(*src_row);
+      dst_row += dst_stride/sizeof(*dst_row);
+   }
+}
+
+
+void
+util_format_r8g8_b8g8_unorm_pack_float(uint8_t *dst_row, unsigned dst_stride,
+                                       const float *src_row, unsigned src_stride,
+                                       unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for (y = 0; y < height; y += 1) {
+      const float *src = src_row;
+      uint32_t *dst = (uint32_t *)dst_row;
+      float r, g0, g1, b;
+      uint32_t value;
+
+      for (x = 0; x + 1 < width; x += 2) {
+         r  = 0.5f*(src[0] + src[4]);
+         g0 = src[1];
+         g1 = src[5];
+         b  = 0.5f*(src[2] + src[6]);
+
+         value  = float_to_ubyte(r);
+         value |= float_to_ubyte(g0) <<  8;
+         value |= float_to_ubyte(b)  << 16;
+         value |= float_to_ubyte(g1) << 24;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst++ = value;
+
+         src += 8;
+      }
+
+      if (x < width) {
+         r  = src[0];
+         g0 = src[1];
+         g1 = 0;
+         b  = src[2];
+
+         value  = float_to_ubyte(r);
+         value |= float_to_ubyte(g0) <<  8;
+         value |= float_to_ubyte(b)  << 16;
+         value |= float_to_ubyte(g1) << 24;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst = value;
+      }
+
+      dst_row += dst_stride/sizeof(*dst_row);
+      src_row += src_stride/sizeof(*src_row);
+   }
+}
+
+
+void
+util_format_r8g8_b8g8_unorm_pack_8unorm(uint8_t *dst_row, unsigned dst_stride,
+                                        const uint8_t *src_row, unsigned src_stride,
+                                        unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for (y = 0; y < height; y += 1) {
+      const uint8_t *src = src_row;
+      uint32_t *dst = (uint32_t *)dst_row;
+      uint32_t r, g0, g1, b;
+      uint32_t value;
+
+      for (x = 0; x + 1 < width; x += 2) {
+         r  = (src[0] + src[4] + 1) >> 1;
+         g0 = src[1];
+         g1 = src[5];
+         b  = (src[2] + src[6] + 1) >> 1;
+
+         value  = r;
+         value |= g0 <<  8;
+         value |= b  << 16;
+         value |= g1 << 24;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst++ = value;
+
+         src += 8;
+      }
+
+      if (x < width) {
+         r  = src[0];
+         g0 = src[1];
+         g1 = 0;
+         b  = src[2];
+
+         value  = r;
+         value |= g0 <<  8;
+         value |= b  << 16;
+         value |= g1 << 24;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst = value;
+      }
+
+      dst_row += dst_stride/sizeof(*dst_row);
+      src_row += src_stride/sizeof(*src_row);
+   }
+}
+
+
+void
+util_format_r8g8_b8g8_unorm_fetch_float(float *dst, const uint8_t *src,
+                                        unsigned i, unsigned j)
+{
+   assert(i < 2);
+   assert(j < 1);
+
+   dst[0] = ubyte_to_float(src[0]);             /* r */
+   dst[1] = ubyte_to_float(src[1 + 2*i]);       /* g */
+   dst[2] = ubyte_to_float(src[2]);             /* b */
+   dst[3] = 1.0f;                               /* a */
+}
+
+
+void
+util_format_g8r8_g8b8_unorm_unpack_float(float *dst_row, unsigned dst_stride,
+                                         const uint8_t *src_row, unsigned src_stride,
+                                         unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for (y = 0; y < height; y += 1) {
+      float *dst = dst_row;
+      const uint32_t *src = (const uint32_t *)src_row;
+      uint32_t value;
+      float r, g0, g1, b;
+
+      for (x = 0; x + 1 < width; x += 2) {
+         value = *src++;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         g0 = ubyte_to_float((value >>  0) & 0xff);
+         r  = ubyte_to_float((value >>  8) & 0xff);
+         g1 = ubyte_to_float((value >> 16) & 0xff);
+         b  = ubyte_to_float((value >> 24) & 0xff);
+
+         dst[0] = r;    /* r */
+         dst[1] = g0;   /* g */
+         dst[2] = b;    /* b */
+         dst[3] = 1.0f; /* a */
+         dst += 4;
+
+         dst[0] = r;    /* r */
+         dst[1] = g1;   /* g */
+         dst[2] = b;    /* b */
+         dst[3] = 1.0f; /* a */
+         dst += 4;
+      }
+
+      if (x < width) {
+         value = *src;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         g0 = ubyte_to_float((value >>  0) & 0xff);
+         r  = ubyte_to_float((value >>  8) & 0xff);
+         g1 = ubyte_to_float((value >> 16) & 0xff);
+         b  = ubyte_to_float((value >> 24) & 0xff);
+
+         dst[0] = r;    /* r */
+         dst[1] = g0;   /* g */
+         dst[2] = b;    /* b */
+         dst[3] = 1.0f; /* a */
+      }
+
+      src_row += src_stride/sizeof(*src_row);
+      dst_row += dst_stride/sizeof(*dst_row);
+   }
+}
+
+
+void
+util_format_g8r8_g8b8_unorm_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride,
+                                          const uint8_t *src_row, unsigned src_stride,
+                                          unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for (y = 0; y < height; y += 1) {
+      uint8_t *dst = dst_row;
+      const uint32_t *src = (const uint32_t *)src_row;
+      uint32_t value;
+      uint8_t r, g0, g1, b;
+
+      for (x = 0; x + 1 < width; x += 2) {
+         value = *src++;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         g0 = (value >>  0) & 0xff;
+         r  = (value >>  8) & 0xff;
+         g1 = (value >> 16) & 0xff;
+         b  = (value >> 24) & 0xff;
+
+         dst[0] = r;    /* r */
+         dst[1] = g0;   /* g */
+         dst[2] = b;    /* b */
+         dst[3] = 0xff; /* a */
+         dst += 4;
+
+         dst[0] = r;    /* r */
+         dst[1] = g1;   /* g */
+         dst[2] = b;    /* b */
+         dst[3] = 0xff; /* a */
+         dst += 4;
+      }
+
+      if (x < width) {
+         value = *src;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         g0 = (value >>  0) & 0xff;
+         r  = (value >>  8) & 0xff;
+         g1 = (value >> 16) & 0xff;
+         b  = (value >> 24) & 0xff;
+
+         dst[0] = r;    /* r */
+         dst[1] = g0;   /* g */
+         dst[2] = b;    /* b */
+         dst[3] = 0xff; /* a */
+      }
+
+      src_row += src_stride/sizeof(*src_row);
+      dst_row += dst_stride/sizeof(*dst_row);
+   }
+}
+
+
+void
+util_format_g8r8_g8b8_unorm_pack_float(uint8_t *dst_row, unsigned dst_stride,
+                                       const float *src_row, unsigned src_stride,
+                                       unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for (y = 0; y < height; y += 1) {
+      const float *src = src_row;
+      uint32_t *dst = (uint32_t *)dst_row;
+      float r, g0, g1, b;
+      uint32_t value;
+
+      for (x = 0; x + 1 < width; x += 2) {
+         r  = 0.5f*(src[0] + src[4]);
+         g0 = src[1];
+         g1 = src[5];
+         b  = 0.5f*(src[2] + src[6]);
+
+         value  = float_to_ubyte(g0);
+         value |= float_to_ubyte(r)  <<  8;
+         value |= float_to_ubyte(g1) << 16;
+         value |= float_to_ubyte(b)  << 24;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst++ = value;
+
+         src += 8;
+      }
+
+      if (x < width) {
+         r  = src[0];
+         g0 = src[1];
+         g1 = 0;
+         b  = src[2];
+
+         value  = float_to_ubyte(g0);
+         value |= float_to_ubyte(r)  <<  8;
+         value |= float_to_ubyte(g1) << 16;
+         value |= float_to_ubyte(b)  << 24;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst = value;
+      }
+
+      dst_row += dst_stride/sizeof(*dst_row);
+      src_row += src_stride/sizeof(*src_row);
+   }
+}
+
+
+void
+util_format_g8r8_g8b8_unorm_pack_8unorm(uint8_t *dst_row, unsigned dst_stride,
+                                        const uint8_t *src_row, unsigned src_stride,
+                                        unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for (y = 0; y < height; y += 1) {
+      const uint8_t *src = src_row;
+      uint32_t *dst = (uint32_t *)dst_row;
+      uint32_t r, g0, g1, b;
+      uint32_t value;
+
+      for (x = 0; x + 1 < width; x += 2) {
+         r  = (src[0] + src[4] + 1) >> 1;
+         g0 = src[1];
+         g1 = src[5];
+         b  = (src[2] + src[6] + 1) >> 1;
+
+         value  = g0;
+         value |= r  <<  8;
+         value |= g1 << 16;
+         value |= b  << 24;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst++ = value;
+
+         src += 8;
+      }
+
+      if (x < width) {
+         r  = src[0];
+         g0 = src[1];
+         g1 = 0;
+         b  = src[2];
+
+         value  = g0;
+         value |= r  <<  8;
+         value |= g1 << 16;
+         value |= b  << 24;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst = value;
+      }
+
+      dst_row += dst_stride/sizeof(*dst_row);
+      src_row += src_stride/sizeof(*src_row);
+   }
+}
+
+
+void
+util_format_g8r8_g8b8_unorm_fetch_float(float *dst, const uint8_t *src,
+                                        unsigned i, unsigned j)
+{
+   assert(i < 2);
+   assert(j < 1);
+
+   dst[0] = ubyte_to_float(src[1]);             /* r */
+   dst[1] = ubyte_to_float(src[0 + 2*i]);       /* g */
+   dst[2] = ubyte_to_float(src[3]);             /* b */
+   dst[3] = 1.0f;                               /* a */
+}
+
+
+void
+util_format_uyvy_unpack_float(float *dst_row, unsigned dst_stride,
+                              const uint8_t *src_row, unsigned src_stride,
+                              unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for (y = 0; y < height; y += 1) {
+      float *dst = dst_row;
+      const uint32_t *src = (const uint32_t *)src_row;
+      uint32_t value;
+      uint8_t y0, y1, u, v;
+
+      for (x = 0; x + 1 < width; x += 2) {
+         value = *src++;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         u  = (value >>  0) & 0xff;
+         y0 = (value >>  8) & 0xff;
+         v  = (value >> 16) & 0xff;
+         y1 = (value >> 24) & 0xff;
+
+         util_format_yuv_to_rgb_float(y0, u, v, &dst[0], &dst[1], &dst[2]);
+         dst[3] = 1.0f; /* a */
+         dst += 4;
+
+         util_format_yuv_to_rgb_float(y1, u, v, &dst[0], &dst[1], &dst[2]);
+         dst[3] = 1.0f; /* a */
+         dst += 4;
+      }
+
+      if (x < width) {
+         value = *src;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         u  = (value >>  0) & 0xff;
+         y0 = (value >>  8) & 0xff;
+         v  = (value >> 16) & 0xff;
+         y1 = (value >> 24) & 0xff;
+
+         util_format_yuv_to_rgb_float(y0, u, v, &dst[0], &dst[1], &dst[2]);
+         dst[3] = 1.0f; /* a */
+      }
+
+      src_row += src_stride/sizeof(*src_row);
+      dst_row += dst_stride/sizeof(*dst_row);
+   }
+}
+
+
+void
+util_format_uyvy_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride,
+                               const uint8_t *src_row, unsigned src_stride,
+                               unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for (y = 0; y < height; y += 1) {
+      uint8_t *dst = dst_row;
+      const uint32_t *src = (const uint32_t *)src_row;
+      uint32_t value;
+      uint8_t y0, y1, u, v;
+
+      for (x = 0; x + 1 < width; x += 2) {
+         value = *src++;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         u  = (value >>  0) & 0xff;
+         y0 = (value >>  8) & 0xff;
+         v  = (value >> 16) & 0xff;
+         y1 = (value >> 24) & 0xff;
+
+         util_format_yuv_to_rgb_8unorm(y0, u, v, &dst[0], &dst[1], &dst[2]);
+         dst[3] = 0xff; /* a */
+         dst += 4;
+
+         util_format_yuv_to_rgb_8unorm(y1, u, v, &dst[0], &dst[1], &dst[2]);
+         dst[3] = 0xff; /* a */
+         dst += 4;
+      }
+
+      if (x < width) {
+         value = *src;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         u  = (value >>  0) & 0xff;
+         y0 = (value >>  8) & 0xff;
+         v  = (value >> 16) & 0xff;
+         y1 = (value >> 24) & 0xff;
+
+         util_format_yuv_to_rgb_8unorm(y0, u, v, &dst[0], &dst[1], &dst[2]);
+         dst[3] = 0xff; /* a */
+      }
+
+      src_row += src_stride/sizeof(*src_row);
+      dst_row += dst_stride/sizeof(*dst_row);
+   }
+}
+
+
+void
+util_format_uyvy_pack_float(uint8_t *dst_row, unsigned dst_stride,
+                            const float *src_row, unsigned src_stride,
+                            unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for (y = 0; y < height; y += 1) {
+      const float *src = src_row;
+      uint32_t *dst = (uint32_t *)dst_row;
+      uint8_t y0, y1, u, v;
+      uint32_t value;
+
+      for (x = 0; x + 1 < width; x += 2) {
+         uint8_t y0, y1, u0, u1, v0, v1, u, v;
+
+         util_format_rgb_float_to_yuv(src[0], src[1], src[2],
+                                      &y0, &u0, &v0);
+         util_format_rgb_float_to_yuv(src[4], src[5], src[6],
+                                      &y1, &u1, &v1);
+
+         u = (u0 + u1 + 1) >> 1;
+         v = (v0 + v1 + 1) >> 1;
+
+         value  = u;
+         value |= y0 <<  8;
+         value |= v  << 16;
+         value |= y1 << 24;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst++ = value;
+
+         src += 8;
+      }
+
+      if (x < width) {
+         util_format_rgb_float_to_yuv(src[0], src[1], src[2],
+                                      &y0, &u, &v);
+         y1 = 0;
+
+         value  = u;
+         value |= y0 <<  8;
+         value |= v  << 16;
+         value |= y1 << 24;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst = value;
+      }
+
+      dst_row += dst_stride/sizeof(*dst_row);
+      src_row += src_stride/sizeof(*src_row);
+   }
+}
+
+
+void
+util_format_uyvy_pack_8unorm(uint8_t *dst_row, unsigned dst_stride,
+                             const uint8_t *src_row, unsigned src_stride,
+                             unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for (y = 0; y < height; y += 1) {
+      const uint8_t *src = src_row;
+      uint32_t *dst = (uint32_t *)dst_row;
+      uint8_t y0, y1, u, v;
+      uint32_t value;
+
+      for (x = 0; x + 1 < width; x += 2) {
+         uint8_t y0, y1, u0, u1, v0, v1, u, v;
+
+         util_format_rgb_8unorm_to_yuv(src[0], src[1], src[2],
+                                       &y0, &u0, &v0);
+         util_format_rgb_8unorm_to_yuv(src[4], src[5], src[6],
+                                       &y1, &u1, &v1);
+
+         u = (u0 + u1 + 1) >> 1;
+         v = (v0 + v1 + 1) >> 1;
+
+         value  = u;
+         value |= y0 <<  8;
+         value |= v  << 16;
+         value |= y1 << 24;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst++ = value;
+
+         src += 8;
+      }
+
+      if (x < width) {
+         util_format_rgb_8unorm_to_yuv(src[0], src[1], src[2],
+                                       &y0, &u, &v);
+         y1 = 0;
+
+         value  = u;
+         value |= y0 <<  8;
+         value |= v  << 16;
+         value |= y1 << 24;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst = value;
+      }
+
+      dst_row += dst_stride/sizeof(*dst_row);
+      src_row += src_stride/sizeof(*src_row);
+   }
+}
+
+
+void
+util_format_uyvy_fetch_float(float *dst, const uint8_t *src,
+                             unsigned i, unsigned j)
+{
+   uint8_t y, u, v;
+
+   assert(i < 2);
+   assert(j < 1);
+
+   y = src[1 + i*2];
+   u = src[0];
+   v = src[2];
+
+   util_format_yuv_to_rgb_float(y, u, v, &dst[0], &dst[1], &dst[2]);
+
+   dst[3] = 1.0f;
+}
+
+
+void
+util_format_yuyv_unpack_float(float *dst_row, unsigned dst_stride,
+                              const uint8_t *src_row, unsigned src_stride,
+                              unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for (y = 0; y < height; y += 1) {
+      float *dst = dst_row;
+      const uint32_t *src = (const uint32_t *)src_row;
+      uint32_t value;
+      uint8_t y0, y1, u, v;
+
+      for (x = 0; x + 1 < width; x += 2) {
+         value = *src++;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         y0 = (value >>  0) & 0xff;
+         u  = (value >>  8) & 0xff;
+         y1 = (value >> 16) & 0xff;
+         v  = (value >> 24) & 0xff;
+
+         util_format_yuv_to_rgb_float(y0, u, v, &dst[0], &dst[1], &dst[2]);
+         dst[3] = 1.0f; /* a */
+         dst += 4;
+
+         util_format_yuv_to_rgb_float(y1, u, v, &dst[0], &dst[1], &dst[2]);
+         dst[3] = 1.0f; /* a */
+         dst += 4;
+      }
+
+      if (x < width) {
+         value = *src;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         y0 = (value >>  0) & 0xff;
+         u  = (value >>  8) & 0xff;
+         y1 = (value >> 16) & 0xff;
+         v  = (value >> 24) & 0xff;
+
+         util_format_yuv_to_rgb_float(y0, u, v, &dst[0], &dst[1], &dst[2]);
+         dst[3] = 1.0f; /* a */
+      }
+
+      src_row += src_stride/sizeof(*src_row);
+      dst_row += dst_stride/sizeof(*dst_row);
+   }
+}
+
+
+void
+util_format_yuyv_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride,
+                               const uint8_t *src_row, unsigned src_stride,
+                               unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for (y = 0; y < height; y += 1) {
+      uint8_t *dst = dst_row;
+      const uint32_t *src = (const uint32_t *)src_row;
+      uint32_t value;
+      uint8_t y0, y1, u, v;
+
+      for (x = 0; x + 1 < width; x += 2) {
+         value = *src++;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         y0 = (value >>  0) & 0xff;
+         u  = (value >>  8) & 0xff;
+         y1 = (value >> 16) & 0xff;
+         v  = (value >> 24) & 0xff;
+
+         util_format_yuv_to_rgb_8unorm(y0, u, v, &dst[0], &dst[1], &dst[2]);
+         dst[3] = 0xff; /* a */
+         dst += 4;
+
+         util_format_yuv_to_rgb_8unorm(y1, u, v, &dst[0], &dst[1], &dst[2]);
+         dst[3] = 0xff; /* a */
+         dst += 4;
+      }
+
+      if (x < width) {
+         value = *src;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         y0 = (value >>  0) & 0xff;
+         u  = (value >>  8) & 0xff;
+         y1 = (value >> 16) & 0xff;
+         v  = (value >> 24) & 0xff;
+
+         util_format_yuv_to_rgb_8unorm(y0, u, v, &dst[0], &dst[1], &dst[2]);
+         dst[3] = 0xff; /* a */
+      }
+
+      src_row += src_stride/sizeof(*src_row);
+      dst_row += dst_stride/sizeof(*dst_row);
+   }
+}
+
+
+void
+util_format_yuyv_pack_float(uint8_t *dst_row, unsigned dst_stride,
+                            const float *src_row, unsigned src_stride,
+                            unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for (y = 0; y < height; y += 1) {
+      const float *src = src_row;
+      uint32_t *dst = (uint32_t *)dst_row;
+      uint8_t y0, y1, u, v;
+      uint32_t value;
+
+      for (x = 0; x + 1 < width; x += 2) {
+         uint8_t y0, y1, u0, u1, v0, v1, u, v;
+
+         util_format_rgb_float_to_yuv(src[0], src[1], src[2],
+                                      &y0, &u0, &v0);
+         util_format_rgb_float_to_yuv(src[4], src[5], src[6],
+                                      &y1, &u1, &v1);
+
+         u = (u0 + u1 + 1) >> 1;
+         v = (v0 + v1 + 1) >> 1;
+
+         value  = y0;
+         value |= u  <<  8;
+         value |= y1 << 16;
+         value |= v  << 24;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst++ = value;
+
+         src += 8;
+      }
+
+      if (x < width) {
+         util_format_rgb_float_to_yuv(src[0], src[1], src[2],
+                                      &y0, &u, &v);
+         y1 = 0;
+
+         value  = y0;
+         value |= u  <<  8;
+         value |= y1 << 16;
+         value |= v  << 24;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst = value;
+      }
+
+      dst_row += dst_stride/sizeof(*dst_row);
+      src_row += src_stride/sizeof(*src_row);
+   }
+}
+
+
+void
+util_format_yuyv_pack_8unorm(uint8_t *dst_row, unsigned dst_stride,
+                             const uint8_t *src_row, unsigned src_stride,
+                             unsigned width, unsigned height)
+{
+   unsigned x, y;
+
+   for (y = 0; y < height; y += 1) {
+      const uint8_t *src = src_row;
+      uint32_t *dst = (uint32_t *)dst_row;
+      uint8_t y0, y1, u, v;
+      uint32_t value;
+
+      for (x = 0; x + 1 < width; x += 2) {
+         uint8_t y0, y1, u0, u1, v0, v1, u, v;
+
+         util_format_rgb_8unorm_to_yuv(src[0], src[1], src[2],
+                                       &y0, &u0, &v0);
+         util_format_rgb_8unorm_to_yuv(src[4], src[5], src[6],
+                                       &y1, &u1, &v1);
+
+         u = (u0 + u1 + 1) >> 1;
+         v = (v0 + v1 + 1) >> 1;
+
+         value  = y0;
+         value |= u  <<  8;
+         value |= y1 << 16;
+         value |= v  << 24;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst++ = value;
+
+         src += 8;
+      }
+
+      if (x < width) {
+         util_format_rgb_8unorm_to_yuv(src[0], src[1], src[2],
+                                       &y0, &u, &v);
+         y1 = 0;
+
+         value  = y0;
+         value |= u  <<  8;
+         value |= y1 << 16;
+         value |= v  << 24;
+
+#ifdef PIPE_ARCH_BIG_ENDIAN
+         value = util_bswap32(value);
+#endif
+
+         *dst = value;
+      }
+
+      dst_row += dst_stride/sizeof(*dst_row);
+      src_row += src_stride/sizeof(*src_row);
+   }
+}
+
+
+void
+util_format_yuyv_fetch_float(float *dst, const uint8_t *src,
+                             unsigned i, unsigned j)
+{
+   uint8_t y, u, v;
+
+   assert(i < 2);
+   assert(j < 1);
+
+   y = src[0 + i*2];
+   u = src[1];
+   v = src[3];
+
+   util_format_yuv_to_rgb_float(y, u, v, &dst[0], &dst[1], &dst[2]);
+
+   dst[3] = 1.0f;
+}