Improve validation when creating audio streams.

content/common/media/audio_param_traits.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 "content/common/media/audio_param_traits.h"
 
 #include "base/stringprintf.h"
 #include "media/audio/audio_parameters.h"
 
 using media::AudioParameters;
@@ skipping 20 matching lines @@
   if (!m->ReadInt(iter, &format) ||
       !m->ReadInt(iter, &channel_layout) ||
       !m->ReadInt(iter, &sample_rate) ||
       !m->ReadInt(iter, &bits_per_sample) ||
       !m->ReadInt(iter, &frames_per_buffer) ||
       !m->ReadInt(iter, &channels))
     return false;
   r->Reset(static_cast<AudioParameters::Format>(format),
            static_cast<ChannelLayout>(channel_layout),
            sample_rate, bits_per_sample, frames_per_buffer);
+  if (!r->IsValid())
+    return false;
   return true;
 }
 
 void ParamTraits<AudioParameters>::Log(const AudioParameters& p,
                                        std::string* l) {
   l->append(base::StringPrintf("<AudioParameters>"));
 }
 
 }