Mesa (master): util: Implement YUV and subsampled RGB format conversion.
Jose Fonseca
jrfonseca at kemper.freedesktop.org
Wed Apr 7 18:52:53 UTC 2010
Module: Mesa
Branch: master
Commit: 7f9444050fbf91a5727617ba39806f28ea0921a2
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=7f9444050fbf91a5727617ba39806f28ea0921a2
Author: José Fonseca <jfonseca at vmware.com>
Date: Wed Apr 7 19:47:24 2010 +0100
util: Implement YUV and subsampled RGB format conversion.
---
progs/gallium/unit/u_format_test.c | 16 +-
src/gallium/auxiliary/Makefile | 1 +
src/gallium/auxiliary/SConscript | 1 +
src/gallium/auxiliary/util/u_format_pack.py | 8 +-
src/gallium/auxiliary/util/u_format_tests.c | 33 +-
src/gallium/auxiliary/util/u_format_yuv.c | 1047 +++++++++++++++++++++++++++
src/gallium/auxiliary/util/u_format_yuv.h | 223 ++++++
7 files changed, 1322 insertions(+), 7 deletions(-)
diff --git a/progs/gallium/unit/u_format_test.c b/progs/gallium/unit/u_format_test.c
index 53e0284..eeb853c 100644
--- a/progs/gallium/unit/u_format_test.c
+++ b/progs/gallium/unit/u_format_test.c
@@ -169,7 +169,9 @@ test_format_unpack_float(const struct util_format_description *format_desc,
unsigned i, j, k;
boolean success;
- format_desc->unpack_float(&unpacked[0][0][0], sizeof unpacked[0], test->packed, 0, format_desc->block.width, format_desc->block.height);
+ format_desc->unpack_float(&unpacked[0][0][0], sizeof unpacked[0],
+ test->packed, 0,
+ format_desc->block.width, format_desc->block.height);
success = TRUE;
for (i = 0; i < format_desc->block.height; ++i) {
@@ -219,7 +221,9 @@ test_format_pack_float(const struct util_format_description *format_desc,
}
}
- format_desc->pack_float(packed, 0, &unpacked[0][0][0], sizeof unpacked[0], format_desc->block.width, format_desc->block.height);
+ format_desc->pack_float(packed, 0,
+ &unpacked[0][0][0], sizeof unpacked[0],
+ format_desc->block.width, format_desc->block.height);
success = TRUE;
for (i = 0; i < format_desc->block.bits/8; ++i)
@@ -268,7 +272,9 @@ test_format_unpack_8unorm(const struct util_format_description *format_desc,
unsigned i, j, k;
boolean success;
- format_desc->unpack_8unorm(&unpacked[0][0][0], sizeof unpacked[0], test->packed, 0, 1, 1);
+ format_desc->unpack_8unorm(&unpacked[0][0][0], sizeof unpacked[0],
+ test->packed, 0,
+ format_desc->block.width, format_desc->block.height);
convert_float_to_8unorm(&expected[0][0][0], &test->unpacked[0][0][0]);
@@ -319,7 +325,9 @@ test_format_pack_8unorm(const struct util_format_description *format_desc,
memset(packed, 0, sizeof packed);
- format_desc->pack_8unorm(packed, 0, &unpacked[0][0][0], sizeof unpacked[0], 1, 1);
+ format_desc->pack_8unorm(packed, 0,
+ &unpacked[0][0][0], sizeof unpacked[0],
+ format_desc->block.width, format_desc->block.height);
success = TRUE;
for (i = 0; i < format_desc->block.bits/8; ++i)
diff --git a/src/gallium/auxiliary/Makefile b/src/gallium/auxiliary/Makefile
index e6cc70e..0015ccd 100644
--- a/src/gallium/auxiliary/Makefile
+++ b/src/gallium/auxiliary/Makefile
@@ -110,6 +110,7 @@ C_SOURCES = \
util/u_format_srgb.c \
util/u_format_table.c \
util/u_format_tests.c \
+ util/u_format_yuv.c \
util/u_gen_mipmap.c \
util/u_half.c \
util/u_handle_table.c \
diff --git a/src/gallium/auxiliary/SConscript b/src/gallium/auxiliary/SConscript
index ca5fab6..b6dcd54 100644
--- a/src/gallium/auxiliary/SConscript
+++ b/src/gallium/auxiliary/SConscript
@@ -159,6 +159,7 @@ source = [
'util/u_format_srgb.c',
'util/u_format_table.c',
'util/u_format_tests.c',
+ 'util/u_format_yuv.c',
'util/u_gen_mipmap.c',
'util/u_half.c',
'util/u_handle_table.c',
diff --git a/src/gallium/auxiliary/util/u_format_pack.py b/src/gallium/auxiliary/util/u_format_pack.py
index 3d89c68..aaeb4ce 100644
--- a/src/gallium/auxiliary/util/u_format_pack.py
+++ b/src/gallium/auxiliary/util/u_format_pack.py
@@ -611,12 +611,16 @@ def generate_format_fetch(format, dst_channel, dst_native_type, dst_suffix):
print
+def is_format_hand_written(format):
+ return format.layout in ('s3tc', 'subsampled')
+
def generate(formats):
print
print '#include "pipe/p_compiler.h"'
print '#include "u_math.h"'
print '#include "u_format.h"'
print '#include "u_format_srgb.h"'
+ print '#include "u_format_yuv.h"'
print '#include "u_half.h"'
print
@@ -629,7 +633,7 @@ def generate(formats):
suffix = 'float'
for format in formats:
- if format.layout != 's3tc':
+ if not is_format_hand_written(format):
generate_format_unpack(format, channel, native_type, suffix)
generate_format_pack(format, channel, native_type, suffix)
generate_format_fetch(format, channel, native_type, suffix)
@@ -639,7 +643,7 @@ def generate(formats):
suffix = '8unorm'
for format in formats:
- if format.layout != 's3tc':
+ if not is_format_hand_written(format):
generate_format_unpack(format, channel, native_type, suffix)
generate_format_pack(format, channel, native_type, suffix)
diff --git a/src/gallium/auxiliary/util/u_format_tests.c b/src/gallium/auxiliary/util/u_format_tests.c
index a16e676..55ce283 100644
--- a/src/gallium/auxiliary/util/u_format_tests.c
+++ b/src/gallium/auxiliary/util/u_format_tests.c
@@ -56,6 +56,12 @@
{{0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}}, \
{{0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}}}
+#define UNPACKED_2x1(r0, g0, b0, a0, r1, g1, b1, a1) \
+ {{{r0, g0, b0, a0}, {r1, g1, b1, a1}, {0, 0, 0, 0}, {0, 0, 0, 0}}, \
+ {{ 0, 0, 0, 0}, { 0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}}, \
+ {{ 0, 0, 0, 0}, { 0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}}, \
+ {{ 0, 0, 0, 0}, { 0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}}}
+
/**
* Test cases.
@@ -294,9 +300,34 @@ util_format_test_cases[] =
*/
/*
- * TODO: YUV formats
+ * YUV formats
*/
+ {PIPE_FORMAT_R8G8_B8G8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0x00), UNPACKED_2x1(0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_R8G8_B8G8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0xff, 0x00, 0x00, 0x00), UNPACKED_2x1(1.0, 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_R8G8_B8G8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0xff, 0x00, 0x00), UNPACKED_2x1(0.0, 1.0, 0.0, 1.0, 0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_R8G8_B8G8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0xff, 0x00), UNPACKED_2x1(0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0)},
+ {PIPE_FORMAT_R8G8_B8G8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0xff), UNPACKED_2x1(0.0, 0.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0)},
+ {PIPE_FORMAT_R8G8_B8G8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0xff, 0xff, 0xff, 0xff), UNPACKED_2x1(1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0)},
+
+ {PIPE_FORMAT_G8R8_G8B8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0x00), UNPACKED_2x1(0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_G8R8_G8B8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0xff, 0x00, 0x00, 0x00), UNPACKED_2x1(0.0, 1.0, 0.0, 1.0, 0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_G8R8_G8B8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0xff, 0x00, 0x00), UNPACKED_2x1(1.0, 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_G8R8_G8B8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0xff, 0x00), UNPACKED_2x1(0.0, 0.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0)},
+ {PIPE_FORMAT_G8R8_G8B8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x00, 0x00, 0x00, 0xff), UNPACKED_2x1(0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0)},
+ {PIPE_FORMAT_G8R8_G8B8_UNORM, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0xff, 0xff, 0xff, 0xff), UNPACKED_2x1(1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0)},
+
+ /*
+ * TODO: Exercise the UV channels as well.
+ */
+ {PIPE_FORMAT_UYVY, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x80, 0x10, 0x80, 0x10), UNPACKED_2x1(0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_UYVY, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x80, 0xeb, 0x80, 0x10), UNPACKED_2x1(1.0, 1.0, 1.0, 1.0, 0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_UYVY, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x80, 0x10, 0x80, 0xeb), UNPACKED_2x1(0.0, 0.0, 0.0, 1.0, 1.0, 1.0, 1.0, 1.0)},
+
+ {PIPE_FORMAT_YUYV, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x10, 0x80, 0x10, 0x80), UNPACKED_2x1(0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_YUYV, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0xeb, 0x80, 0x10, 0x80), UNPACKED_2x1(1.0, 1.0, 1.0, 1.0, 0.0, 0.0, 0.0, 1.0)},
+ {PIPE_FORMAT_YUYV, PACKED_4x8(0xff, 0xff, 0xff, 0xff), PACKED_4x8(0x10, 0x80, 0xeb, 0x80), UNPACKED_2x1(0.0, 0.0, 0.0, 1.0, 1.0, 1.0, 1.0, 1.0)},
+
/*
* Compressed formats
*/
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 0000000..0847476
--- /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 at 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;
+}
diff --git a/src/gallium/auxiliary/util/u_format_yuv.h b/src/gallium/auxiliary/util/u_format_yuv.h
new file mode 100644
index 0000000..10cf678
--- /dev/null
+++ b/src/gallium/auxiliary/util/u_format_yuv.h
@@ -0,0 +1,223 @@
+/**************************************************************************
+ *
+ * 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 colorspace conversion.
+ *
+ * @author Brian Paul <brianp at vmware.com>
+ * @author Michal Krol <michal at vmware.com>
+ * @author Jose Fonseca <jfonseca at vmware.com>
+ *
+ * See also:
+ * - http://www.fourcc.org/fccyvrgb.php
+ * - http://msdn.microsoft.com/en-us/library/ms893078
+ * - http://en.wikipedia.org/wiki/YUV
+ */
+
+
+#ifndef U_FORMAT_YUV_H_
+#define U_FORMAT_YUV_H_
+
+
+#include "pipe/p_compiler.h"
+#include "u_math.h"
+
+
+/*
+ * TODO: Ensure we use consistent and right floating formulas, with enough
+ * precision in the coefficients.
+ */
+
+static INLINE void
+util_format_rgb_float_to_yuv(float r, float g, float b,
+ uint8_t *y, uint8_t *u, uint8_t *v)
+{
+ const float _r = CLAMP(r, 0.0f, 1.0f);
+ const float _g = CLAMP(g, 0.0f, 1.0f);
+ const float _b = CLAMP(b, 0.0f, 1.0f);
+
+ const float scale = 255.0f;
+
+ const int _y = scale * ( (0.257f * _r) + (0.504f * _g) + (0.098f * _b));
+ const int _u = scale * (-(0.148f * _r) - (0.291f * _g) + (0.439f * _b));
+ const int _v = scale * ( (0.439f * _r) - (0.368f * _g) - (0.071f * _b));
+
+ *y = _y + 16;
+ *u = _u + 128;
+ *v = _v + 128;
+}
+
+
+static INLINE void
+util_format_yuv_to_rgb_float(uint8_t y, uint8_t u, uint8_t v,
+ float *r, float *g, float *b)
+{
+ const int _y = y - 16;
+ const int _u = u - 128;
+ const int _v = v - 128;
+
+ const float y_factor = 255.0f / 219.0f;
+
+ const float scale = 1.0f / 255.0f;
+
+ *r = scale * (y_factor * _y + 1.596f * _v);
+ *g = scale * (y_factor * _y - 0.391f * _u - 0.813f * _v);
+ *b = scale * (y_factor * _y + 2.018f * _u );
+}
+
+
+static INLINE void
+util_format_rgb_8unorm_to_yuv(uint8_t r, uint8_t g, uint8_t b,
+ uint8_t *y, uint8_t *u, uint8_t *v)
+{
+ *y = (( 66 * r + 129 * g + 25 * b + 128) >> 8) + 16;
+ *u = (( -38 * r - 74 * g + 112 * b + 128) >> 8) + 128;
+ *v = (( 112 * r - 94 * g - 18 * b + 128) >> 8) + 128;
+}
+
+
+static INLINE void
+util_format_yuv_to_rgb_8unorm(uint8_t y, uint8_t u, uint8_t v,
+ uint8_t *r, uint8_t *g, uint8_t *b)
+{
+ const int _y = y - 16;
+ const int _u = u - 128;
+ const int _v = v - 128;
+
+ const int _r = (298 * _y + 409 * _v + 128) >> 8;
+ const int _g = (298 * _y - 100 * _u - 208 * _v + 128) >> 8;
+ const int _b = (298 * _y + 516 * _u + 128) >> 8;
+
+ *r = CLAMP(_r, 0, 255);
+ *g = CLAMP(_g, 0, 255);
+ *b = CLAMP(_b, 0, 255);
+}
+
+
+
+void
+util_format_uyvy_unpack_float(float *dst_row, unsigned dst_stride,
+ const uint8_t *src_row, unsigned src_stride,
+ unsigned width, unsigned height);
+
+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);
+
+void
+util_format_uyvy_pack_float(uint8_t *dst_row, unsigned dst_stride,
+ const float *src_row, unsigned src_stride,
+ unsigned width, unsigned height);
+
+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);
+
+void
+util_format_uyvy_fetch_float(float *dst, const uint8_t *src,
+ unsigned i, unsigned j);
+
+void
+util_format_yuyv_unpack_float(float *dst_row, unsigned dst_stride,
+ const uint8_t *src_row, unsigned src_stride,
+ unsigned width, unsigned height);
+
+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);
+
+void
+util_format_yuyv_pack_float(uint8_t *dst_row, unsigned dst_stride,
+ const float *src_row, unsigned src_stride,
+ unsigned width, unsigned height);
+
+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);
+
+void
+util_format_yuyv_fetch_float(float *dst, const uint8_t *src,
+ unsigned i, unsigned j);
+
+
+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);
+
+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);
+
+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);
+
+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);
+
+void
+util_format_r8g8_b8g8_unorm_fetch_float(float *dst, const uint8_t *src,
+ unsigned i, unsigned j);
+
+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);
+
+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);
+
+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);
+
+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);
+
+void
+util_format_g8r8_g8b8_unorm_fetch_float(float *dst, const uint8_t *src,
+ unsigned i, unsigned j);
+
+
+
+#endif /* U_FORMAT_YUV_H_ */
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