Changes in the wav_file implementation in order to avoid clang warnings

webrtc/common_audio/wav_file.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.
  */
 
@@ skipping 46 matching lines @@
                           &bytes_per_sample, &num_samples_));
   num_samples_remaining_ = num_samples_;
   RTC_CHECK_EQ(kWavFormat, format);
   RTC_CHECK_EQ(kBytesPerSample, bytes_per_sample);
 }
 
 WavReader::~WavReader() {
   Close();
 }
 
+int WavReader::sample_rate() const {
+  return sample_rate_;
+}
+
+size_t WavReader::num_channels() const {
+  return num_channels_;
+}
+
+size_t WavReader::num_samples() const {
+  return num_samples_;
+}
+
 size_t WavReader::ReadSamples(size_t num_samples, int16_t* samples) {
 #ifndef WEBRTC_ARCH_LITTLE_ENDIAN
 #error "Need to convert samples to big-endian when reading from WAV file"
 #endif
   // There could be metadata after the audio; ensure we don't read it.
   num_samples = std::min(num_samples, num_samples_remaining_);
   const size_t read =
       fread(samples, sizeof(*samples), num_samples, file_handle_);
   // If we didn't read what was requested, ensure we've reached the EOF.
   RTC_CHECK(read == num_samples || feof(file_handle_));
@@ skipping 34 matching lines @@
   // Write a blank placeholder header, since we need to know the total number
   // of samples before we can fill in the real data.
   static const uint8_t blank_header[kWavHeaderSize] = {0};
   RTC_CHECK_EQ(1u, fwrite(blank_header, kWavHeaderSize, 1, file_handle_));
 }
 
 WavWriter::~WavWriter() {
   Close();
 }
 
+int WavWriter::sample_rate() const {
+  return sample_rate_;
+}
+
+size_t WavWriter::num_channels() const {
+  return num_channels_;
+}
+
+size_t WavWriter::num_samples() const {
+  return num_samples_;
+}
+
 void WavWriter::WriteSamples(const int16_t* samples, size_t num_samples) {
 #ifndef WEBRTC_ARCH_LITTLE_ENDIAN
 #error "Need to convert samples to little-endian when writing to WAV file"
 #endif
   const size_t written =
       fwrite(samples, sizeof(*samples), num_samples, file_handle_);
   RTC_CHECK_EQ(num_samples, written);
   num_samples_ += written;
   RTC_CHECK(num_samples_ >= written);  // detect size_t overflow
 }
@@ skipping 41 matching lines @@
   return reinterpret_cast<const webrtc::WavWriter*>(wf)->sample_rate();
 }
 
 size_t rtc_WavNumChannels(const rtc_WavWriter* wf) {
   return reinterpret_cast<const webrtc::WavWriter*>(wf)->num_channels();
 }
 
 size_t rtc_WavNumSamples(const rtc_WavWriter* wf) {
   return reinterpret_cast<const webrtc::WavWriter*>(wf)->num_samples();
 }