Add enumerations for compressed (E)AC3 sample format

media/base/audio_parameters.cc

 // Copyright (c) 2012 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 "media/base/audio_parameters.h"
 
 #include "base/logging.h"
 #include "media/base/limits.h"
 
 namespace media {
@@ skipping 79 matching lines @@
 
 bool AudioParameters::Equals(const AudioParameters& other) const {
   return format_ == other.format() && sample_rate_ == other.sample_rate() &&
          channel_layout_ == other.channel_layout() &&
          channels_ == other.channels() &&
          bits_per_sample_ == other.bits_per_sample() &&
          frames_per_buffer_ == other.frames_per_buffer() &&
          effects_ == other.effects() && mic_positions_ == other.mic_positions_;
 }
 
+bool AudioParameters::IsBitstreamFormat() const {
+  return format_ == AUDIO_BITSTREAM_AC3 || format_ == AUDIO_BITSTREAM_EAC3;
+}
+
 // static
 AudioParameters AudioParameters::UnavailableDeviceParams() {
   return media::AudioParameters(
       media::AudioParameters::AUDIO_FAKE, media::CHANNEL_LAYOUT_STEREO,
       media::AudioParameters::kAudioCDSampleRate, 16,
       media::AudioParameters::kAudioCDSampleRate / 10);
 }
 
 }  // namespace media