style: reformat C/C++ sources and headers with clang-format

Run clang-format over all project C/C++ source and header files
(.c, .cpp, .cc, .h, .hpp, .hh, .m, .mm) under app/ and tests/.
Non-source files (svg, qm, qrc, etc.) were not touched.

tests/gtest/codec_encoder_test.cpp

@@ -2,7 +2,8 @@
 
 #include "codec/encoder.h"
 
-namespace {
+namespace
+{
 class TestEncoder final : public olive::Encoder {
 public:
 	explicit TestEncoder(const olive::EncodingParams &params)
@@ -57,8 +58,8 @@ TEST(CodecEncoder, ImageSequenceFilenames)
 				  QStringLiteral("frame_[####].png")),
 			  QStringLiteral("frame.png"));
 
-	const QString filename = encoder.GetFilenameForFrame(
-		olive::core::rational(1, 24));
+	const QString filename =
+		encoder.GetFilenameForFrame(olive::core::rational(1, 24));
 	EXPECT_EQ(filename, QStringLiteral("frame_0001.png"));
 }
 
@@ -66,21 +67,18 @@ TEST(CodecEncoder, MatrixGeneration)
 {
 	using Method = olive::EncodingParams::VideoScalingMethod;
 
-	QMatrix4x4 stretch =
-		olive::EncodingParams::GenerateMatrix(Method::kStretch, 1920, 1080,
-											  1280, 720);
+	QMatrix4x4 stretch = olive::EncodingParams::GenerateMatrix(
+		Method::kStretch, 1920, 1080, 1280, 720);
 	EXPECT_TRUE(qFuzzyCompare(stretch(0, 0), 1.0f));
 	EXPECT_TRUE(qFuzzyCompare(stretch(1, 1), 1.0f));
 
-	QMatrix4x4 fit =
-		olive::EncodingParams::GenerateMatrix(Method::kFit, 1920, 1080,
-											  1024, 1024);
+	QMatrix4x4 fit = olive::EncodingParams::GenerateMatrix(Method::kFit, 1920,
+														   1080, 1024, 1024);
 	EXPECT_TRUE(qFuzzyCompare(fit(0, 0), 1.0f));
 	EXPECT_FALSE(qFuzzyCompare(fit(1, 1), 1.0f));
 
-	QMatrix4x4 crop =
-		olive::EncodingParams::GenerateMatrix(Method::kCrop, 1920, 1080,
-											  1024, 1024);
+	QMatrix4x4 crop = olive::EncodingParams::GenerateMatrix(Method::kCrop, 1920,
+															1080, 1024, 1024);
 	EXPECT_FALSE(qFuzzyCompare(crop(0, 0), 1.0f));
 	EXPECT_TRUE(qFuzzyCompare(crop(1, 1), 1.0f));
 }