First version of video quality measurement program and test framework.

See https://docs.google.com/a/google.com/document/d/1w6Nrxw6yTg_sDu18Ux8oZPEMo5F_R-zt62udrmmTeOc/edit?hl=en_US
for background, details and additional instructions on usage.

BUG=
TEST=

Review URL: http://webrtc-codereview.appspot.com/175001

git-svn-id: http://webrtc.googlecode.com/svn/trunk@700 4adac7df-926f-26a2-2b94-8c16560cd09d

src/modules/video_coding/codecs/test/unittest_utils.h

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+// Copyright 2011 Google Inc. All Rights Reserved.
+// Author: kjellander@google.com (Henrik Kjellander)
+
+
+#ifndef SRC_MODULES_VIDEO_CODING_CODECS_TEST_UNITTEST_UTILS_H_
+#define SRC_MODULES_VIDEO_CODING_CODECS_TEST_UNITTEST_UTILS_H_
+
+namespace webrtc {
+namespace test {
+
+const int kPacketSizeInBytes = 1500;
+const int kPacketDataLength = kPacketSizeInBytes * 2 + 1;
+const int kPacketDataNumberOfPackets = 3;
+
+// A base test fixture for packet related tests. Contains
+// two full prepared packets with 1s, 2s in their data and a third packet with
+// a single 3 in it (size=1).
+// A packet data structure is also available, that contains these three packets
+// in order.
+class PacketRelatedTest: public testing::Test {
+ protected:
+  // Tree packet byte arrays with data used for verification:
+  WebRtc_UWord8 packet1_[kPacketSizeInBytes];
+  WebRtc_UWord8 packet2_[kPacketSizeInBytes];
+  WebRtc_UWord8 packet3_[1];
+  // Construct a data structure containing these packets
+  WebRtc_UWord8 packet_data_[kPacketDataLength];
+  WebRtc_UWord8* packet_data_pointer_;
+
+  PacketRelatedTest() {
+    packet_data_pointer_ = packet_data_;
+
+    memset(packet1_, 1, kPacketSizeInBytes);
+    memset(packet2_, 2, kPacketSizeInBytes);
+    memset(packet3_, 3, 1);
+    // Fill the packet_data:
+    memcpy(packet_data_pointer_, packet1_, kPacketSizeInBytes);
+    memcpy(packet_data_pointer_ + kPacketSizeInBytes, packet2_,
+           kPacketSizeInBytes);
+    memcpy(packet_data_pointer_ + kPacketSizeInBytes * 2, packet3_, 1);
+  }
+
+  virtual ~PacketRelatedTest() {
+  }
+
+  void SetUp() {
+    // Initialize the random generator with 0 to get determenistic behaviour
+    srand(0);
+  }
+
+  void TearDown() {
+  }
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // SRC_MODULES_VIDEO_CODING_CODECS_TEST_UNITTEST_UTILS_H_