Fix type punning error in (de)serializing audio frames.

webkit/media/crypto/ppapi/clear_key_cdm.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 "webkit/media/crypto/ppapi/clear_key_cdm.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 474 matching lines @@
   int64 duration_in_microseconds = last_duration_.InMicroseconds();
   DCHECK_GT(duration_in_microseconds, 0);
 
   int64 timestamp = last_timestamp_.InMicroseconds();
   int64 bytes_per_sample = channel_count_ * bits_per_channel_ / 8;
   int64 frame_size = bytes_per_sample * samples_per_second_ *
       duration_in_microseconds / base::Time::kMicrosecondsPerSecond;
 
   const int kHeaderSize = sizeof(timestamp) + sizeof(frame_size);
   audio_frames->set_buffer(allocator_->Allocate(kHeaderSize + frame_size));
-  int64* data = reinterpret_cast<int64*>(audio_frames->buffer()->data());
-  *(data++) = timestamp;
-  *(data++) = frame_size;
+  uint8_t* data = audio_frames->buffer()->data();
+
+  memcpy(data, &timestamp, sizeof(timestamp));
+  data += sizeof(timestamp);
+  memcpy(data, &frame_size, sizeof(frame_size));
+  data += sizeof(frame_size);
   // You won't hear anything because we have all zeros here. But the video
   // should play just fine!
   memset(data, 0, frame_size);
 }
 #endif  // CLEAR_KEY_CDM_USE_FAKE_AUDIO_DECODER
 
 #if defined(CLEAR_KEY_CDM_USE_FAKE_VIDEO_DECODER)
 void ClearKeyCdm::GenerateFakeVideoFrame(base::TimeDelta timestamp,
                                          cdm::VideoFrame* video_frame) {
   // Choose non-zero alignment and padding on purpose for testing.
@@ skipping 29 matching lines @@
 
   static unsigned char color = 0;
   color += 10;
 
   memset(reinterpret_cast<void*>(video_frame->frame_buffer()->data()),
          color, frame_size);
 }
 #endif  // CLEAR_KEY_CDM_USE_FAKE_VIDEO_DECODER
 
 }  // namespace webkit_media