tests: Turn fbtest into a gtest and move it to src/base.

Change-Id: I9ca57e24f27e0eb747d1f27262972a8abcd10fc8
Reviewed-on: https://gem5-review.googlesource.com/6342
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>

2 files changed, 122 insertions, 0 deletions

diff --git a/src/base/SConscript b/src/base/SConscript
index bbdc85f75..d1c4a14bf 100644
--- a/src/base/SConscript
+++ b/src/base/SConscript
@@ -56,6 +56,7 @@ Source('logging.cc')
 Source('match.cc')
 Source('output.cc')
 Source('pixel.cc')
+GTest('pixeltest', 'pixeltest.cc', 'pixel.cc')
 Source('pollevent.cc')
 Source('random.cc')
 if env['TARGET_ISA'] != 'null':
diff --git a/src/base/pixeltest.cc b/src/base/pixeltest.cc
new file mode 100644
index 000000000..4c88fc964
--- /dev/null
+++ b/src/base/pixeltest.cc
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2015 ARM Limited
+ * All rights reserved
+ *
+ * The license below extends only to copyright in the software and shall
+ * not be construed as granting a license to any other intellectual
+ * property including but not limited to intellectual property relating
+ * to a hardware implementation of the functionality of the software
+ * licensed hereunder.  You may use the software subject to the license
+ * terms below provided that you ensure that this notice is replicated
+ * unmodified and in its entirety in all distributions of the software,
+ * modified or unmodified, in source code or in binary form.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Andreas Sandberg
+ */
+
+#include <gtest/gtest.h>
+
+#include "base/pixel.hh"
+
+static Pixel pixel_red(0xff, 0x00, 0x00);
+static Pixel pixel_green(0x00, 0xff, 0x00);
+static Pixel pixel_blue(0x00, 0x00, 0xff);
+
+TEST(FBTest, PixelConversionRGBA8888)
+{
+    EXPECT_EQ(PixelConverter::rgba8888_le.fromPixel(pixel_red),
+              0x000000ffU);
+    EXPECT_EQ(PixelConverter::rgba8888_le.fromPixel(pixel_green),
+              0x0000ff00U);
+    EXPECT_EQ(PixelConverter::rgba8888_le.fromPixel(pixel_blue),
+              0x00ff0000U);
+
+    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(0x000000ffU),
+              pixel_red);
+    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(0x0000ff00U),
+              pixel_green);
+    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(0x00ff0000U),
+              pixel_blue);
+}
+
+TEST(FBTest, PixelConversionRGB565)
+{
+    EXPECT_EQ(PixelConverter::rgb565_le.fromPixel(pixel_red),   0x001fU);
+    EXPECT_EQ(PixelConverter::rgb565_le.fromPixel(pixel_green), 0x07e0U);
+    EXPECT_EQ(PixelConverter::rgb565_le.fromPixel(pixel_blue),  0xf800U);
+
+    EXPECT_EQ(PixelConverter::rgb565_le.toPixel(0x001fU), pixel_red);
+    EXPECT_EQ(PixelConverter::rgb565_le.toPixel(0x07e0U), pixel_green);
+    EXPECT_EQ(PixelConverter::rgb565_le.toPixel(0xf800U), pixel_blue);
+}
+
+TEST(FBTest, PixelToMemRGBA8888LE)
+{
+    uint8_t data[] = { 0xde, 0xad, 0xbe, 0xef };
+    PixelConverter::rgba8888_le.fromPixel(data, pixel_red);
+    EXPECT_EQ(data[0], 0xff);
+    EXPECT_EQ(data[1], 0x00);
+    EXPECT_EQ(data[3], 0x00);
+    EXPECT_EQ(data[3], 0x00);
+    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(data), pixel_red);
+
+    PixelConverter::rgba8888_le.fromPixel(data, pixel_green);
+    EXPECT_EQ(data[0], 0x00);
+    EXPECT_EQ(data[1], 0xff);
+    EXPECT_EQ(data[3], 0x00);
+    EXPECT_EQ(data[3], 0x00);
+    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(data), pixel_green);
+
+    PixelConverter::rgba8888_le.fromPixel(data, pixel_blue);
+    EXPECT_EQ(data[0], 0x00);
+    EXPECT_EQ(data[1], 0x00);
+    EXPECT_EQ(data[2], 0xff);
+    EXPECT_EQ(data[3], 0x00);
+    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(data), pixel_blue);
+}
+
+TEST(FBTest, MemToPixelRGBA8888LE)
+{
+    uint8_t red[] = { 0xff, 0x00, 0x00, 0x00 };
+    uint8_t green[] = { 0x00, 0xff, 0x00, 0x00 };
+    uint8_t blue[] = { 0x00, 0x00, 0xff, 0x00 };
+
+    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(red), pixel_red);
+    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(green), pixel_green);
+    EXPECT_EQ(PixelConverter::rgba8888_le.toPixel(blue), pixel_blue);
+}
+
+TEST(FBTest, MemToPixelRGBA8888BE)
+{
+    uint8_t red[] = { 0x00, 0x00, 0x00, 0xff };
+    uint8_t green[] = { 0x00, 0x00, 0xff, 0x00 };
+    uint8_t blue[] = { 0x00, 0xff, 0x00, 0x00 };
+
+    EXPECT_EQ(PixelConverter::rgba8888_be.toPixel(red), pixel_red);
+    EXPECT_EQ(PixelConverter::rgba8888_be.toPixel(green), pixel_green);
+    EXPECT_EQ(PixelConverter::rgba8888_be.toPixel(blue), pixel_blue);
+}