Reland of Split iOS sdk in to separate targets

webrtc/sdk/objc/Framework/Classes/VideoToolbox/nalu_rewriter_unittest.cc

Index: webrtc/sdk/objc/Framework/Classes/VideoToolbox/nalu_rewriter_unittest.cc
diff --git a/webrtc/sdk/objc/Framework/Classes/VideoToolbox/nalu_rewriter_unittest.cc b/webrtc/sdk/objc/Framework/Classes/VideoToolbox/nalu_rewriter_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ba3a3d1d42fe2660f209cc8d9ff4a3d0bab8f043
--- /dev/null
+++ b/webrtc/sdk/objc/Framework/Classes/VideoToolbox/nalu_rewriter_unittest.cc
@@ -0,0 +1,204 @@
+/*
+ *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ *
+ */
+
+#include <memory>
+
+#include "webrtc/base/arraysize.h"
+#include "webrtc/sdk/objc/Framework/Classes/VideoToolbox/nalu_rewriter.h"
+#include "webrtc/test/gtest.h"
+
+namespace webrtc {
+
+static const uint8_t NALU_TEST_DATA_0[] = {0xAA, 0xBB, 0xCC};
+static const uint8_t NALU_TEST_DATA_1[] = {0xDE, 0xAD, 0xBE, 0xEF};
+
+TEST(H264VideoToolboxNaluTest, TestHasVideoFormatDescription) {
+  const uint8_t sps_buffer[] = {0x00, 0x00, 0x00, 0x01, 0x27};
+  EXPECT_TRUE(H264AnnexBBufferHasVideoFormatDescription(sps_buffer,
+                                                        arraysize(sps_buffer)));
+  const uint8_t aud_sps_buffer[] = {0x00, 0x00, 0x00, 0x01, 0x29, 0x10,
+                                    0x00, 0x00, 0x00, 0x01, 0x27, 0xFF};
+  EXPECT_TRUE(H264AnnexBBufferHasVideoFormatDescription(
+      aud_sps_buffer, arraysize(aud_sps_buffer)));
+  const uint8_t other_buffer[] = {0x00, 0x00, 0x00, 0x01, 0x28};
+  EXPECT_FALSE(H264AnnexBBufferHasVideoFormatDescription(
+      other_buffer, arraysize(other_buffer)));
+  const uint8_t aud_other_buffer[] = {0x00, 0x00, 0x00, 0x01, 0x29,
+                                      0x00, 0x00, 0x00, 0x01, 0x28};
+  EXPECT_FALSE(H264AnnexBBufferHasVideoFormatDescription(
+      aud_other_buffer, arraysize(aud_other_buffer)));
+}
+
+TEST(H264VideoToolboxNaluTest, TestCreateVideoFormatDescription) {
+  const uint8_t sps_pps_buffer[] = {
+    // SPS nalu.
+    0x00, 0x00, 0x00, 0x01,
+    0x27, 0x42, 0x00, 0x1E, 0xAB, 0x40, 0xF0, 0x28, 0xD3, 0x70, 0x20, 0x20,
+    0x20, 0x20,
+    // PPS nalu.
+    0x00, 0x00, 0x00, 0x01,
+    0x28, 0xCE, 0x3C, 0x30
+  };
+  CMVideoFormatDescriptionRef description =
+      CreateVideoFormatDescription(sps_pps_buffer, arraysize(sps_pps_buffer));
+  EXPECT_TRUE(description);
+  if (description) {
+    CFRelease(description);
+    description = nullptr;
+  }
+  const uint8_t other_buffer[] = {0x00, 0x00, 0x00, 0x01, 0x28};
+  EXPECT_FALSE(CreateVideoFormatDescription(other_buffer,
+                                            arraysize(other_buffer)));
+}
+
+TEST(AnnexBBufferReaderTest, TestReadEmptyInput) {
+  const uint8_t annex_b_test_data[] = {0x00};
+  AnnexBBufferReader reader(annex_b_test_data, 0);
+  const uint8_t* nalu = nullptr;
+  size_t nalu_length = 0;
+  EXPECT_EQ(0u, reader.BytesRemaining());
+  EXPECT_FALSE(reader.ReadNalu(&nalu, &nalu_length));
+  EXPECT_EQ(nullptr, nalu);
+  EXPECT_EQ(0u, nalu_length);
+}
+
+TEST(AnnexBBufferReaderTest, TestReadSingleNalu) {
+  const uint8_t annex_b_test_data[] = {0x00, 0x00, 0x00, 0x01, 0xAA};
+  AnnexBBufferReader reader(annex_b_test_data, arraysize(annex_b_test_data));
+  const uint8_t* nalu = nullptr;
+  size_t nalu_length = 0;
+  EXPECT_EQ(arraysize(annex_b_test_data), reader.BytesRemaining());
+  EXPECT_TRUE(reader.ReadNalu(&nalu, &nalu_length));
+  EXPECT_EQ(annex_b_test_data + 4, nalu);
+  EXPECT_EQ(1u, nalu_length);
+  EXPECT_EQ(0u, reader.BytesRemaining());
+  EXPECT_FALSE(reader.ReadNalu(&nalu, &nalu_length));
+  EXPECT_EQ(nullptr, nalu);
+  EXPECT_EQ(0u, nalu_length);
+}
+
+TEST(AnnexBBufferReaderTest, TestReadSingleNalu3ByteHeader) {
+  const uint8_t annex_b_test_data[] = {0x00, 0x00, 0x01, 0xAA};
+  AnnexBBufferReader reader(annex_b_test_data, arraysize(annex_b_test_data));
+  const uint8_t* nalu = nullptr;
+  size_t nalu_length = 0;
+  EXPECT_EQ(arraysize(annex_b_test_data), reader.BytesRemaining());
+  EXPECT_TRUE(reader.ReadNalu(&nalu, &nalu_length));
+  EXPECT_EQ(annex_b_test_data + 3, nalu);
+  EXPECT_EQ(1u, nalu_length);
+  EXPECT_EQ(0u, reader.BytesRemaining());
+  EXPECT_FALSE(reader.ReadNalu(&nalu, &nalu_length));
+  EXPECT_EQ(nullptr, nalu);
+  EXPECT_EQ(0u, nalu_length);
+}
+
+TEST(AnnexBBufferReaderTest, TestReadMissingNalu) {
+  // clang-format off
+  const uint8_t annex_b_test_data[] = {0x01,
+                                       0x00, 0x01,
+                                       0x00, 0x00, 0x00, 0xFF};
+  // clang-format on
+  AnnexBBufferReader reader(annex_b_test_data, arraysize(annex_b_test_data));
+  const uint8_t* nalu = nullptr;
+  size_t nalu_length = 0;
+  EXPECT_EQ(0u, reader.BytesRemaining());
+  EXPECT_FALSE(reader.ReadNalu(&nalu, &nalu_length));
+  EXPECT_EQ(nullptr, nalu);
+  EXPECT_EQ(0u, nalu_length);
+}
+
+TEST(AnnexBBufferReaderTest, TestReadMultipleNalus) {
+  // clang-format off
+  const uint8_t annex_b_test_data[] = {0x00, 0x00, 0x00, 0x01, 0xFF,
+                                       0x01,
+                                       0x00, 0x01,
+                                       0x00, 0x00, 0x00, 0xFF,
+                                       0x00, 0x00, 0x01, 0xAA, 0xBB};
+  // clang-format on
+  AnnexBBufferReader reader(annex_b_test_data, arraysize(annex_b_test_data));
+  const uint8_t* nalu = nullptr;
+  size_t nalu_length = 0;
+  EXPECT_EQ(arraysize(annex_b_test_data), reader.BytesRemaining());
+  EXPECT_TRUE(reader.ReadNalu(&nalu, &nalu_length));
+  EXPECT_EQ(annex_b_test_data + 4, nalu);
+  EXPECT_EQ(8u, nalu_length);
+  EXPECT_EQ(6u, reader.BytesRemaining());
+  EXPECT_TRUE(reader.ReadNalu(&nalu, &nalu_length));
+  EXPECT_EQ(annex_b_test_data + 16, nalu);
+  EXPECT_EQ(2u, nalu_length);
+  EXPECT_EQ(0u, reader.BytesRemaining());
+  EXPECT_FALSE(reader.ReadNalu(&nalu, &nalu_length));
+  EXPECT_EQ(nullptr, nalu);
+  EXPECT_EQ(0u, nalu_length);
+}
+
+TEST(AvccBufferWriterTest, TestEmptyOutputBuffer) {
+  const uint8_t expected_buffer[] = {0x00};
+  const size_t buffer_size = 1;
+  std::unique_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]);
+  memset(buffer.get(), 0, buffer_size);
+  AvccBufferWriter writer(buffer.get(), 0);
+  EXPECT_EQ(0u, writer.BytesRemaining());
+  EXPECT_FALSE(writer.WriteNalu(NALU_TEST_DATA_0, arraysize(NALU_TEST_DATA_0)));
+  EXPECT_EQ(0,
+            memcmp(expected_buffer, buffer.get(), arraysize(expected_buffer)));
+}
+
+TEST(AvccBufferWriterTest, TestWriteSingleNalu) {
+  const uint8_t expected_buffer[] = {
+      0x00, 0x00, 0x00, 0x03, 0xAA, 0xBB, 0xCC,
+  };
+  const size_t buffer_size = arraysize(NALU_TEST_DATA_0) + 4;
+  std::unique_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]);
+  AvccBufferWriter writer(buffer.get(), buffer_size);
+  EXPECT_EQ(buffer_size, writer.BytesRemaining());
+  EXPECT_TRUE(writer.WriteNalu(NALU_TEST_DATA_0, arraysize(NALU_TEST_DATA_0)));
+  EXPECT_EQ(0u, writer.BytesRemaining());
+  EXPECT_FALSE(writer.WriteNalu(NALU_TEST_DATA_1, arraysize(NALU_TEST_DATA_1)));
+  EXPECT_EQ(0,
+            memcmp(expected_buffer, buffer.get(), arraysize(expected_buffer)));
+}
+
+TEST(AvccBufferWriterTest, TestWriteMultipleNalus) {
+  // clang-format off
+  const uint8_t expected_buffer[] = {
+      0x00, 0x00, 0x00, 0x03, 0xAA, 0xBB, 0xCC,
+      0x00, 0x00, 0x00, 0x04, 0xDE, 0xAD, 0xBE, 0xEF
+  };
+  // clang-format on
+  const size_t buffer_size =
+      arraysize(NALU_TEST_DATA_0) + arraysize(NALU_TEST_DATA_1) + 8;
+  std::unique_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]);
+  AvccBufferWriter writer(buffer.get(), buffer_size);
+  EXPECT_EQ(buffer_size, writer.BytesRemaining());
+  EXPECT_TRUE(writer.WriteNalu(NALU_TEST_DATA_0, arraysize(NALU_TEST_DATA_0)));
+  EXPECT_EQ(buffer_size - (arraysize(NALU_TEST_DATA_0) + 4),
+            writer.BytesRemaining());
+  EXPECT_TRUE(writer.WriteNalu(NALU_TEST_DATA_1, arraysize(NALU_TEST_DATA_1)));
+  EXPECT_EQ(0u, writer.BytesRemaining());
+  EXPECT_EQ(0,
+            memcmp(expected_buffer, buffer.get(), arraysize(expected_buffer)));
+}
+
+TEST(AvccBufferWriterTest, TestOverflow) {
+  const uint8_t expected_buffer[] = {0x00, 0x00, 0x00};
+  const size_t buffer_size = arraysize(NALU_TEST_DATA_0);
+  std::unique_ptr<uint8_t[]> buffer(new uint8_t[buffer_size]);
+  memset(buffer.get(), 0, buffer_size);
+  AvccBufferWriter writer(buffer.get(), buffer_size);
+  EXPECT_EQ(buffer_size, writer.BytesRemaining());
+  EXPECT_FALSE(writer.WriteNalu(NALU_TEST_DATA_0, arraysize(NALU_TEST_DATA_0)));
+  EXPECT_EQ(buffer_size, writer.BytesRemaining());
+  EXPECT_EQ(0,
+            memcmp(expected_buffer, buffer.get(), arraysize(expected_buffer)));
+}
+
+}  // namespace webrtc