Rename AudioInputWriter -> AudioFileWriter.

content/browser/renderer_host/media/audio_debug_file_writer.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "content/browser/renderer_host/media/audio_input_debug_writer.h"
+#include "content/browser/renderer_host/media/audio_debug_file_writer.h"
+
 #include <stdint.h>
 #include <array>
 #include <utility>
+
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/sys_byteorder.h"
 #include "content/public/browser/browser_thread.h"
 #include "media/base/audio_bus.h"
 
 namespace content {
 
 namespace {
 
@@ skipping 105 matching lines @@
   writer.WriteLE16(kBytesPerSample * 8);
   writer.Write(kData);
   writer.WriteLE32(bytes_in_payload);
 }
 
 }  // namespace
 
 // Manages the debug recording file and writes to it. Can be created on any
 // thread. All the operations must be executed on FILE thread. Must be destroyed
 // on FILE thread.
-class AudioInputDebugWriter::AudioFileWriter {
+class AudioDebugFileWriter::AudioFileWriter {
  public:
   static AudioFileWriterUniquePtr Create(const base::FilePath& file_name,
                                          const media::AudioParameters& params);
 
   ~AudioFileWriter();
 
   // Write data from |data| to file.
   void Write(const media::AudioBus* data);
 
  private:
@@ skipping 15 matching lines @@
 
   // Input audio parameters required to build wave header.
   const media::AudioParameters params_;
 
   // Intermediate buffer to be written to file. Interleaved 16 bit audio data.
   std::unique_ptr<int16_t[]> interleaved_data_;
   int interleaved_data_size_;
 };
 
 // static
-AudioInputDebugWriter::AudioFileWriterUniquePtr
-AudioInputDebugWriter::AudioFileWriter::Create(
+AudioDebugFileWriter::AudioFileWriterUniquePtr
+AudioDebugFileWriter::AudioFileWriter::Create(
     const base::FilePath& file_name,
     const media::AudioParameters& params) {
   AudioFileWriterUniquePtr file_writer(new AudioFileWriter(params));
 
   // base::Unretained is safe, because destructor is called on FILE thread or on
   // FILE message loop destruction.
   BrowserThread::PostTask(
       BrowserThread::FILE, FROM_HERE,
       base::Bind(&AudioFileWriter::CreateRecordingFile,
                  base::Unretained(file_writer.get()), file_name));
   return file_writer;
 }
 
-AudioInputDebugWriter::AudioFileWriter::AudioFileWriter(
+AudioDebugFileWriter::AudioFileWriter::AudioFileWriter(
     const media::AudioParameters& params)
     : samples_(0), params_(params), interleaved_data_size_(0) {
   DCHECK_EQ(params.bits_per_sample(), kBytesPerSample * 8);
 }
 
-AudioInputDebugWriter::AudioFileWriter::~AudioFileWriter() {
+AudioDebugFileWriter::AudioFileWriter::~AudioFileWriter() {
   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
   if (file_.IsValid())
     WriteHeader();
 }
 
-void AudioInputDebugWriter::AudioFileWriter::Write(
+void AudioDebugFileWriter::AudioFileWriter::Write(
     const media::AudioBus* data) {
   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
   if (!file_.IsValid())
     return;
 
   // Convert to 16 bit audio and write to file.
   int data_size = data->frames() * data->channels();
   if (!interleaved_data_ || interleaved_data_size_ < data_size) {
     interleaved_data_.reset(new int16_t[data_size]);
     interleaved_data_size_ = data_size;
   }
   samples_ += data_size;
   data->ToInterleaved(data->frames(), sizeof(interleaved_data_[0]),
                       interleaved_data_.get());
 
 #ifndef ARCH_CPU_LITTLE_ENDIAN
   static_assert(sizeof(interleaved_data_[0]) == sizeof(uint16_t),
                 "Only 2 bytes per channel is supported.");
   for (int i = 0; i < data_size; ++i)
     interleaved_data_[i] = base::ByteSwapToLE16(interleaved_data_[i]);
 #endif
 
   file_.WriteAtCurrentPos(reinterpret_cast<char*>(interleaved_data_.get()),
                           data_size * sizeof(interleaved_data_[0]));
 }
 
-void AudioInputDebugWriter::AudioFileWriter::WriteHeader() {
+void AudioDebugFileWriter::AudioFileWriter::WriteHeader() {
   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
   if (!file_.IsValid())
     return;
   WavHeaderBuffer buf;
   WriteWavHeader(&buf, params_.channels(), params_.sample_rate(), samples_);
   file_.Write(0, &buf[0], kWavHeaderSize);
 
   // Write() does not move the cursor if file is not in APPEND mode; Seek() so
   // that the header is not overwritten by the following writes.
   file_.Seek(base::File::FROM_BEGIN, kWavHeaderSize);
 }
 
-void AudioInputDebugWriter::AudioFileWriter::CreateRecordingFile(
+void AudioDebugFileWriter::AudioFileWriter::CreateRecordingFile(
     const base::FilePath& file_name) {
   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
   DCHECK(!file_.IsValid());
 
   file_ = base::File(file_name,
                      base::File::FLAG_CREATE_ALWAYS | base::File::FLAG_WRITE);
 
   if (file_.IsValid()) {
     WriteHeader();
     return;
   }
 
-  // Note that we do not inform AudioInputDebugWriter that the file creation
+  // Note that we do not inform AudioDebugFileWriter that the file creation
   // fails, so it will continue to post data to be recorded, which won't
   // be written to the file. This also won't be reflected in WillWrite(). It's
   // fine, because this situation is rare, and all the posting is expected to
   // happen in case of success anyways. This allows us to save on thread hops
   // for error reporting and to avoid dealing with lifetime issues. It also
   // means file_.IsValid() should always be checked before issuing writes to it.
   PLOG(ERROR) << "Could not open debug recording file, error="
               << file_.error_details();
 }
 
-AudioInputDebugWriter::AudioInputDebugWriter(
+AudioDebugFileWriter::AudioDebugFileWriter(
     const media::AudioParameters& params)
     : params_(params) {
   client_sequence_checker_.DetachFromSequence();
 }
 
-AudioInputDebugWriter::~AudioInputDebugWriter() {
+AudioDebugFileWriter::~AudioDebugFileWriter() {
   // |file_writer_| will be deleted on FILE thread.
 }
 
-void AudioInputDebugWriter::Start(const base::FilePath& file_name) {
+void AudioDebugFileWriter::Start(const base::FilePath& file_name) {
   DCHECK(client_sequence_checker_.CalledOnValidSequence());
   DCHECK(!file_writer_);
   file_writer_ = AudioFileWriter::Create(file_name, params_);
 }
 
-void AudioInputDebugWriter::Stop() {
+void AudioDebugFileWriter::Stop() {
   DCHECK(client_sequence_checker_.CalledOnValidSequence());
   // |file_writer_| is deleted on FILE thread.
   file_writer_.reset();
   client_sequence_checker_.DetachFromSequence();
 }
 
-void AudioInputDebugWriter::Write(std::unique_ptr<media::AudioBus> data) {
+void AudioDebugFileWriter::Write(std::unique_ptr<media::AudioBus> data) {
   DCHECK(client_sequence_checker_.CalledOnValidSequence());
   if (!file_writer_)
     return;
 
   // base::Unretained for |file_writer_| is safe, see the destructor.
   BrowserThread::PostTask(
       BrowserThread::FILE, FROM_HERE,
       // Callback takes ownership of |data|:
       base::Bind(&AudioFileWriter::Write, base::Unretained(file_writer_.get()),
                  base::Owned(data.release())));
 }
 
-bool AudioInputDebugWriter::WillWrite() {
+bool AudioDebugFileWriter::WillWrite() {
   // Note that if this is called from any place other than
   // |client_sequence_checker_| then there is a data race here, but it's fine,
   // because Write() will check for |file_writer_|. So, we are not very precise
   // here, but it's fine: we can afford missing some data or scheduling some
   // no-op writes.
   return !!file_writer_;
 }
 
 }  // namspace content