Add NetEqIlbcQualityTest

This is virtually the same as NetEq{Isac,Opus}QualityTest but for iLBC.

BUG=2692
R=minyue@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/50909004

Cr-Commit-Position: refs/heads/master@{#9178}

webrtc/modules/audio_coding/neteq/test/neteq_ilbc_quality_test.cc

@@ -0,0 +1,82 @@
+/*
+ *  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 "webrtc/base/checks.h"
+#include "webrtc/base/safe_conversions.h"
+#include "webrtc/base/scoped_ptr.h"
+#include "webrtc/modules/audio_coding/codecs/ilbc/interface/audio_encoder_ilbc.h"
+#include "webrtc/modules/audio_coding/neteq/tools/neteq_quality_test.h"
+#include "webrtc/test/testsupport/fileutils.h"
+
+using google::RegisterFlagValidator;
+using google::ParseCommandLineFlags;
+using std::string;
+using testing::InitGoogleTest;
+
+namespace webrtc {
+namespace test {
+namespace {
+static const int kInputSampleRateKhz = 8;
+static const int kOutputSampleRateKhz = 8;
+
+// Define switch for frame size.
+static bool ValidateFrameSize(const char* flagname, int32_t value) {
+  if (value == 20 || value == 30 || value == 40 || value == 60)
+    return true;
+  printf("Invalid frame size, should be 20, 30, 40, or 60 ms.");
+  return false;
+}
+
+DEFINE_int32(frame_size_ms, 20, "Codec frame size (milliseconds).");
+
+static const bool frame_size_dummy =
+    RegisterFlagValidator(&FLAGS_frame_size_ms, &ValidateFrameSize);
+
+}  // namespace
+
+class NetEqIlbcQualityTest : public NetEqQualityTest {
+ protected:
+  NetEqIlbcQualityTest()
+      : NetEqQualityTest(FLAGS_frame_size_ms,
+                         kInputSampleRateKhz,
+                         kOutputSampleRateKhz,
+                         kDecoderILBC,
+                         1) {
+    AudioEncoderIlbc::Config config;
+    config.frame_size_ms = FLAGS_frame_size_ms;
+    encoder_.reset(new AudioEncoderIlbc(config));
+  }
+
+  int EncodeBlock(int16_t* in_data,
+                  int block_size_samples,
+                  uint8_t* payload,
+                  int max_bytes) override {
+    const int kFrameSizeSamples = 80;  // Samples per 10 ms.
+    int encoded_samples = 0;
+    uint32_t dummy_timestamp = 0;
+    AudioEncoder::EncodedInfo info;
+    do {
+      info = encoder_->Encode(dummy_timestamp, &in_data[encoded_samples],
+                              kFrameSizeSamples, max_bytes, payload);
+      encoded_samples += kFrameSizeSamples;
+    } while (info.encoded_bytes == 0);
+    return rtc::checked_cast<int>(info.encoded_bytes);
+  }
+
+ private:
+  rtc::scoped_ptr<AudioEncoderIlbc> encoder_;
+};
+
+TEST_F(NetEqIlbcQualityTest, Test) {
+  Simulate();
+}
+
+}  // namespace test
+}  // namespace webrtc