Simplified AudioOutputStream interface.

media/audio/audio_parameters.cc

 // Copyright (c) 2010 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/audio/audio_parameters.h"
 
 #include "media/base/limits.h"
 
 AudioParameters::AudioParameters()
     : format(AUDIO_PCM_LINEAR),
       channels(0),
       sample_rate(0),
-      bits_per_sample(0) {
+      bits_per_sample(0),
+      samples_per_packet(0) {
 }
 
 AudioParameters::AudioParameters(Format format, int channels,
-                                 int sample_rate, int bits_per_sample)
+                                 int sample_rate, int bits_per_sample,
+                                 int samples_per_packet)
     : format(format),
       channels(channels),
       sample_rate(sample_rate),
-      bits_per_sample(bits_per_sample) {
+      bits_per_sample(bits_per_sample),
+      samples_per_packet(samples_per_packet) {
 }
 
 bool AudioParameters::IsValid() const {
   return (format >= 0) && (format < AUDIO_LAST_FORMAT) &&
       (channels > 0) && (channels <= media::Limits::kMaxChannels) &&
       (sample_rate > 0) && (sample_rate <= media::Limits::kMaxSampleRate) &&
       (bits_per_sample > 0) &&
-      (bits_per_sample <= media::Limits::kMaxBitsPerSample);
+      (bits_per_sample <= media::Limits::kMaxBitsPerSample) &&
+      (samples_per_packet > 0) &&
+      (samples_per_packet <= media::Limits::kMaxSamplesPerPacket);
 }
+
+int AudioParameters::GetPacketSize() const {
+  return samples_per_packet * channels * bits_per_sample / 8;
+}