Update audio code to use size_t more correctly, webrtc/common_audio/ portion.

webrtc/common_audio/lapped_transform_unittest.cc

 /*
  *  Copyright (c) 2014 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/common_audio/lapped_transform.h"
 
 #include <algorithm>
 #include <cmath>
 #include <cstring>
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 using std::complex;
 
 namespace {
 
 class NoopCallback : public webrtc::LappedTransform::Callback {
  public:
   NoopCallback() : block_num_(0) {}
 
   virtual void ProcessAudioBlock(const complex<float>* const* in_block,
                                  int in_channels,
-                                 int frames,
+                                 size_t frames,
                                  int out_channels,
                                  complex<float>* const* out_block) {
     CHECK_EQ(in_channels, out_channels);
     for (int i = 0; i < out_channels; ++i) {
       memcpy(out_block[i], in_block[i], sizeof(**in_block) * frames);
     }
     ++block_num_;
   }
 
   int block_num() {
     return block_num_;
   }
 
  private:
   int block_num_;
 };
 
 class FftCheckerCallback : public webrtc::LappedTransform::Callback {
  public:
   FftCheckerCallback() : block_num_(0) {}
 
   virtual void ProcessAudioBlock(const complex<float>* const* in_block,
                                  int in_channels,
-                                 int frames,
+                                 size_t frames,
                                  int out_channels,
                                  complex<float>* const* out_block) {
     CHECK_EQ(in_channels, out_channels);
 
-    int full_length = (frames - 1) * 2;
+    size_t full_length = (frames - 1) * 2;
     ++block_num_;
 
     if (block_num_ > 0) {
       ASSERT_NEAR(in_block[0][0].real(), static_cast<float>(full_length),
                   1e-5f);
       ASSERT_NEAR(in_block[0][0].imag(), 0.0f, 1e-5f);
-      for (int i = 1; i < frames; ++i) {
+      for (size_t i = 1; i < frames; ++i) {
         ASSERT_NEAR(in_block[0][i].real(), 0.0f, 1e-5f);
         ASSERT_NEAR(in_block[0][i].imag(), 0.0f, 1e-5f);
       }
     }
   }
 
   int block_num() {
     return block_num_;
   }
 
@@ skipping 107 matching lines @@
 }
 
 TEST(LappedTransformTest, chunk_length) {
   const int kBlockLength = 64;
   FftCheckerCallback call;
   const float window[kBlockLength] = {};
 
   // Make sure that chunk_length returns the same value passed to the
   // LappedTransform constructor.
   {
-    const int kExpectedChunkLength = 512;
+    const size_t kExpectedChunkLength = 512;
     const LappedTransform trans(1, 1, kExpectedChunkLength, window,
                                 kBlockLength, kBlockLength, &call);
 
     EXPECT_EQ(kExpectedChunkLength, trans.chunk_length());
   }
   {
-    const int kExpectedChunkLength = 160;
+    const size_t kExpectedChunkLength = 160;
     const LappedTransform trans(1, 1, kExpectedChunkLength, window,
                                 kBlockLength, kBlockLength, &call);
 
     EXPECT_EQ(kExpectedChunkLength, trans.chunk_length());
   }
 }
 
 }  // namespace webrtc