Implement ISO BMFF support in Media Source.

media/mp4/avc_unittest.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <string.h>
+
+#include "base/basictypes.h"
+#include "media/mp4/avc.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/gtest/include/gtest/gtest-param-test.h"
+
+using media::mp4::ConvertAVCCToAnnexB;
+
+const static uint8 kNALU1[] = { 0x01, 0x02, 0x03 };
+const static uint8 kNALU2[] = { 0x04, 0x05, 0x06, 0x07 };
+const static uint8 kExpected[] = {
+  0x00, 0x00, 0x00, 0x01, 0x01, 0x02, 0x03,
+  0x00, 0x00, 0x00, 0x01, 0x04, 0x05, 0x06, 0x07 };
+
+class AVCCConversionTest : public testing::TestWithParam<uint32> {
+ protected:
+  void MakeInputForLength(uint32 length_size, std::vector<uint8>* buf) {
+    buf->clear();
+    for (uint32 i = 1; i < length_size; i++) {
+      buf->push_back(0);
+    }
+    buf->push_back(sizeof(kNALU1));
+    buf->insert(buf->end(), kNALU1, kNALU1 + sizeof(kNALU1));
+
+    for (uint32 i = 1; i < length_size; i++) {
+      buf->push_back(0);
+    }
+    buf->push_back(sizeof(kNALU2));
+    buf->insert(buf->end(), kNALU2, kNALU2 + sizeof(kNALU2));
+  }
+};
+
+TEST_P(AVCCConversionTest, ParseCorrectly) {
+  std::vector<uint8> buf;
+  MakeInputForLength(GetParam(), &buf);
+  EXPECT_TRUE(ConvertAVCCToAnnexB(GetParam(), &buf));
+  ASSERT_EQ(buf.size(), sizeof(kExpected));
+  ASSERT_EQ(0, memcmp(kExpected, &buf[0], sizeof(kExpected)));
+}
+
+TEST_P(AVCCConversionTest, ParsePartial) {
+  std::vector<uint8> buf;
+  MakeInputForLength(GetParam(), &buf);
+  buf.pop_back();
+  EXPECT_FALSE(ConvertAVCCToAnnexB(GetParam(), &buf));
+  // This actually still works for one-byte sizes.
+  if (GetParam() != 1) {
+    MakeInputForLength(GetParam(), &buf);
+    buf.erase(buf.end() - (sizeof(kNALU2) + 1), buf.end());
+    EXPECT_FALSE(ConvertAVCCToAnnexB(GetParam(), &buf));
+  }
+}
+
+TEST_P(AVCCConversionTest, ParseEmpty) {
+  std::vector<uint8> buf;
+  EXPECT_TRUE(ConvertAVCCToAnnexB(GetParam(), &buf));
+  EXPECT_EQ(0u, buf.size());
+}
+
+INSTANTIATE_TEST_CASE_P(AVCCConversionTestValues,
+                        AVCCConversionTest,
+                        ::testing::Values(1, 2, 4));