content/browser/renderer_host/media/audio_input_debug_writer.cc

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/renderer_host/media/audio_input_debug_writer.h"
   6
   7 #include "content/public/browser/browser_thread.h"
   8 #include "media/base/audio_bus.h"
   9
  10 namespace content {
  11
  12 AudioInputDebugWriter::AudioInputDebugWriter(base::File file)
  13     : file_(file.Pass()),
  14       interleaved_data_size_(0),
  15       weak_factory_(this) {
  16 }
  17
  18 AudioInputDebugWriter::~AudioInputDebugWriter() {
  19   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
  20 }
  21
  22 void AudioInputDebugWriter::Write(scoped_ptr<media::AudioBus> data) {
  23   BrowserThread::PostTask(
  24       BrowserThread::FILE,
  25       FROM_HERE,
  26       base::Bind(&AudioInputDebugWriter::DoWrite,
  27                  weak_factory_.GetWeakPtr(),
  28                  base::Passed(&data)));
  29 }
  30
  31 void AudioInputDebugWriter::DoWrite(scoped_ptr<media::AudioBus> data) {
  32   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
  33
  34   // Convert to 16 bit audio and write to file.
  35   int data_size = data->frames() * data->channels();
  36   if (!interleaved_data_ || interleaved_data_size_ < data_size) {
  37     interleaved_data_.reset(new int16[data_size]);
  38     interleaved_data_size_ = data_size;
  39   }
  40   data->ToInterleaved(data->frames(), sizeof(interleaved_data_[0]),
  41                       interleaved_data_.get());
  42   file_.WriteAtCurrentPos(reinterpret_cast<char*>(interleaved_data_.get()),
  43                           data_size * sizeof(interleaved_data_[0]));
  44 }
  45
  46 }  // namspace content