Handle decoding of vorbis files better on Android

media/base/android/webaudio_media_codec_bridge.h

 // Copyright (c) 2013 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.
 
 #ifndef MEDIA_BASE_ANDROID_MEDIA_CODEC_BRIDGE_H_
 #define MEDIA_BASE_ANDROID_MEDIA_CODEC_BRIDGE_H_
 
 #include <jni.h>
 
 #include "base/file_descriptor_posix.h"
 #include "base/shared_memory.h"
 #include "media/base/media_export.h"
 
 namespace media {
 
 // This class serves as a bridge for native code to call Java
 // functions in the Android MediaCodec class. See
 // http://developer.android.com/reference/android/media/MediaCodec.html.
 class MEDIA_EXPORT WebAudioMediaCodecBridge {
  public:
   // Create the bridge with the given file descriptors. We read from
   // |encoded_audio_handle| to get the encoded audio data. Audio file
   // information and decoded PCM samples are written to |pcm_output|.
   // We also take ownership of |pcm_output|.
   WebAudioMediaCodecBridge(base::SharedMemoryHandle encoded_audio_handle,
-                           base::FileDescriptor pcm_output);
+                           base::FileDescriptor pcm_output,
+                           size_t data_size);
   ~WebAudioMediaCodecBridge();
 
   // Inform JNI about this bridge. Returns true if registration
   // succeeded.
   static bool RegisterWebAudioMediaCodecBridge(JNIEnv* env);
 
   // Start MediaCodec to process the encoded data in
   // |encoded_audio_handle|. The PCM samples are sent to |pcm_output|.
   static void RunWebAudioMediaCodec(
       base::SharedMemoryHandle encoded_audio_handle,
-      base::FileDescriptor pcm_output);
+      base::FileDescriptor pcm_output,
+      size_t data_size);
 
   void OnChunkDecoded(JNIEnv* env,
                       jobject /*java object*/,
                       jobject buf,
                       jint buf_size);
 
   void InitializeDestination(JNIEnv* env,
                              jobject /*java object*/,
                              jint channel_count,
                              jint sample_rate,
-                             jlong duration_us,
-                             jboolean is_vorbis);
+                             jlong duration_us);
 
  private:
   // Handles MediaCodec processing of the encoded data in
   // |encoded_audio_handle_| and sends the pcm data to |pcm_output_|.
   // Returns true if decoding was successful.
   bool DecodeInMemoryAudioFile();
 
   // The encoded audio data is read from this file descriptor for the
   // shared memory that holds the encoded data.
   int encoded_audio_handle_;
 
   // The audio file information and decoded pcm data are written to
   // this file descriptor. We take ownership of this descriptor.
   int pcm_output_;
 
+  // The length of the encoded data.
+  size_t data_size_;
+
   DISALLOW_COPY_AND_ASSIGN(WebAudioMediaCodecBridge);
 };
 
 }  // namespace media
 #endif  // MEDIA_BASE_ANDROID_MEDIA_CODEC_BRIDGE_H_