Update a ton of audio code to use size_t more correctly and in general reduce

webrtc/modules/audio_coding/codecs/cng/audio_encoder_cng_unittest.cc

Index: webrtc/modules/audio_coding/codecs/cng/audio_encoder_cng_unittest.cc
diff --git a/webrtc/modules/audio_coding/codecs/cng/audio_encoder_cng_unittest.cc b/webrtc/modules/audio_coding/codecs/cng/audio_encoder_cng_unittest.cc
index d16dd3b791a2b708680d4400e6beeab08d8d8cef..a2ab6e8ecbca1225b21b521fbc874bb607295384 100644
--- a/webrtc/modules/audio_coding/codecs/cng/audio_encoder_cng_unittest.cc
+++ b/webrtc/modules/audio_coding/codecs/cng/audio_encoder_cng_unittest.cc
@@ -59,14 +59,14 @@ class AudioEncoderCngTest : public ::testing::Test {
   void CreateCng() {
     // The config_ parameters may be changed by the TEST_Fs up until CreateCng()
     // is called, thus we cannot use the values until now.
-    num_audio_samples_10ms_ = 10 * sample_rate_hz_ / 1000;
+    num_audio_samples_10ms_ = static_cast<size_t>(10 * sample_rate_hz_ / 1000);
     ASSERT_LE(num_audio_samples_10ms_, kMaxNumSamples);
     EXPECT_CALL(mock_encoder_, SampleRateHz())
         .WillRepeatedly(Return(sample_rate_hz_));
     // Max10MsFramesInAPacket() is just used to verify that the SID frame period
     // is not too small. The return value does not matter that much, as long as
     // it is smaller than 10.
-    EXPECT_CALL(mock_encoder_, Max10MsFramesInAPacket()).WillOnce(Return(1));
+    EXPECT_CALL(mock_encoder_, Max10MsFramesInAPacket()).WillOnce(Return(1u));
     EXPECT_CALL(mock_encoder_, MaxEncodedBytes())
         .WillRepeatedly(Return(kMockMaxEncodedBytes));
     cng_.reset(new AudioEncoderCng(config_));
@@ -83,10 +83,10 @@ class AudioEncoderCngTest : public ::testing::Test {
   // Expect |num_calls| calls to the encoder, all successful. The last call
   // claims to have encoded |kMockMaxEncodedBytes| bytes, and all the preceding
   // ones 0 bytes.
-  void ExpectEncodeCalls(int num_calls) {
+  void ExpectEncodeCalls(size_t num_calls) {
     InSequence s;
     AudioEncoder::EncodedInfo info;
-    for (int j = 0; j < num_calls - 1; ++j) {
+    for (size_t j = 0; j < num_calls - 1; ++j) {
       EXPECT_CALL(mock_encoder_, EncodeInternal(_, _, _, _))
           .WillOnce(Return(info));
     }
@@ -98,7 +98,7 @@ class AudioEncoderCngTest : public ::testing::Test {
   // Verifies that the cng_ object waits until it has collected
   // |blocks_per_frame| blocks of audio, and then dispatches all of them to
   // the underlying codec (speech or cng).
-  void CheckBlockGrouping(int blocks_per_frame, bool active_speech) {
+  void CheckBlockGrouping(size_t blocks_per_frame, bool active_speech) {
     EXPECT_CALL(mock_encoder_, Num10MsFramesInNextPacket())
         .WillRepeatedly(Return(blocks_per_frame));
     CreateCng();
@@ -107,7 +107,7 @@ class AudioEncoderCngTest : public ::testing::Test {
 
     // Don't expect any calls to the encoder yet.
     EXPECT_CALL(mock_encoder_, EncodeInternal(_, _, _, _)).Times(0);
-    for (int i = 0; i < blocks_per_frame - 1; ++i) {
+    for (size_t i = 0; i < blocks_per_frame - 1; ++i) {
       Encode();
       EXPECT_EQ(0u, encoded_info_.encoded_bytes);
     }
@@ -127,14 +127,15 @@ class AudioEncoderCngTest : public ::testing::Test {
   void CheckVadInputSize(int input_frame_size_ms,
                          int expected_first_block_size_ms,
                          int expected_second_block_size_ms) {
-    const int blocks_per_frame = input_frame_size_ms / 10;
+    const size_t blocks_per_frame =
+        static_cast<size_t>(input_frame_size_ms / 10);
 
     EXPECT_CALL(mock_encoder_, Num10MsFramesInNextPacket())
         .WillRepeatedly(Return(blocks_per_frame));
 
     // Expect nothing to happen before the last block is sent to cng_.
     EXPECT_CALL(*mock_vad_, VoiceActivity(_, _, _)).Times(0);
-    for (int i = 0; i < blocks_per_frame - 1; ++i) {
+    for (size_t i = 0; i < blocks_per_frame - 1; ++i) {
       Encode();
     }
 
@@ -163,7 +164,7 @@ class AudioEncoderCngTest : public ::testing::Test {
                                Vad::Activity second_type) {
     // Set the speech encoder frame size to 60 ms, to ensure that the VAD will
     // be called twice.
-    const int blocks_per_frame = 6;
+    const size_t blocks_per_frame = 6;
     EXPECT_CALL(mock_encoder_, Num10MsFramesInNextPacket())
         .WillRepeatedly(Return(blocks_per_frame));
     InSequence s;
@@ -175,7 +176,7 @@ class AudioEncoderCngTest : public ::testing::Test {
           .WillOnce(Return(second_type));
     }
     encoded_info_.payload_type = 0;
-    for (int i = 0; i < blocks_per_frame; ++i) {
+    for (size_t i = 0; i < blocks_per_frame; ++i) {
       Encode();
     }
     return encoded_info_.payload_type != kCngPayloadType;
@@ -199,8 +200,8 @@ TEST_F(AudioEncoderCngTest, CreateAndDestroy) {
 
 TEST_F(AudioEncoderCngTest, CheckFrameSizePropagation) {
   CreateCng();
-  EXPECT_CALL(mock_encoder_, Num10MsFramesInNextPacket()).WillOnce(Return(17));
-  EXPECT_EQ(17, cng_->Num10MsFramesInNextPacket());
+  EXPECT_CALL(mock_encoder_, Num10MsFramesInNextPacket()).WillOnce(Return(17U));
+  EXPECT_EQ(17U, cng_->Num10MsFramesInNextPacket());
 }
 
 TEST_F(AudioEncoderCngTest, CheckChangeBitratePropagation) {
@@ -217,7 +218,7 @@ TEST_F(AudioEncoderCngTest, CheckProjectedPacketLossRatePropagation) {
 
 TEST_F(AudioEncoderCngTest, EncodeCallsVad) {
   EXPECT_CALL(mock_encoder_, Num10MsFramesInNextPacket())
-      .WillRepeatedly(Return(1));
+      .WillRepeatedly(Return(1U));
   CreateCng();
   EXPECT_CALL(*mock_vad_, VoiceActivity(_, _, _))
       .WillOnce(Return(Vad::kPassive));
@@ -249,7 +250,7 @@ TEST_F(AudioEncoderCngTest, EncodeCollects3BlocksActiveSpeech) {
 }
 
 TEST_F(AudioEncoderCngTest, EncodePassive) {
-  const int kBlocksPerFrame = 3;
+  const size_t kBlocksPerFrame = 3;
   EXPECT_CALL(mock_encoder_, Num10MsFramesInNextPacket())
       .WillRepeatedly(Return(kBlocksPerFrame));
   CreateCng();
@@ -258,7 +259,7 @@ TEST_F(AudioEncoderCngTest, EncodePassive) {
   // Expect no calls at all to the speech encoder mock.
   EXPECT_CALL(mock_encoder_, EncodeInternal(_, _, _, _)).Times(0);
   uint32_t expected_timestamp = timestamp_;
-  for (int i = 0; i < 100; ++i) {
+  for (size_t i = 0; i < 100; ++i) {
     Encode();
     // Check if it was time to call the cng encoder. This is done once every
     // |kBlocksPerFrame| calls.
@@ -339,7 +340,7 @@ TEST_F(AudioEncoderCngTest, VadInputSize60Ms) {
 TEST_F(AudioEncoderCngTest, VerifyCngPayloadType) {
   CreateCng();
   EXPECT_CALL(mock_encoder_, EncodeInternal(_, _, _, _)).Times(0);
-  EXPECT_CALL(mock_encoder_, Num10MsFramesInNextPacket()).WillOnce(Return(1));
+  EXPECT_CALL(mock_encoder_, Num10MsFramesInNextPacket()).WillOnce(Return(1U));
   EXPECT_CALL(*mock_vad_, VoiceActivity(_, _, _))
       .WillOnce(Return(Vad::kPassive));
   encoded_info_.payload_type = 0;
@@ -352,7 +353,7 @@ TEST_F(AudioEncoderCngTest, VerifyCngPayloadType) {
 TEST_F(AudioEncoderCngTest, VerifySidFrameAfterSpeech) {
   CreateCng();
   EXPECT_CALL(mock_encoder_, Num10MsFramesInNextPacket())
-      .WillRepeatedly(Return(1));
+      .WillRepeatedly(Return(1U));
   // Start with encoding noise.
   EXPECT_CALL(*mock_vad_, VoiceActivity(_, _, _))
       .Times(2)
@@ -443,7 +444,7 @@ TEST_F(AudioEncoderCngDeathTest, Stereo) {
 TEST_F(AudioEncoderCngDeathTest, EncoderFrameSizeTooLarge) {
   CreateCng();
   EXPECT_CALL(mock_encoder_, Num10MsFramesInNextPacket())
-      .WillRepeatedly(Return(7));
+      .WillRepeatedly(Return(7U));
   for (int i = 0; i < 6; ++i)
     Encode();
   EXPECT_DEATH(Encode(),