AudioBus: Add a ToInterleavedFloat() method to AudioBus

media/base/audio_bus.h

 // 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.
 
 #ifndef MEDIA_BASE_AUDIO_BUS_H_
 #define MEDIA_BASE_AUDIO_BUS_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 48 matching lines @@
 
   // Helper methods for converting an AudioBus from and to interleaved integer
   // data.  Expects interleaving to be [ch0, ch1, ..., chN, ch0, ch1, ...] with
   // |bytes_per_sample| per value.  Values are scaled and bias corrected during
   // conversion.  ToInterleaved() will also clip values to format range.
   // Handles uint8_t, int16_t, and int32_t currently.  FromInterleaved() will
   // zero out
   // any unfilled frames when |frames| is less than frames().
   void FromInterleaved(const void* source, int frames, int bytes_per_sample);
   void ToInterleaved(int frames, int bytes_per_sample, void* dest) const;
+  void ToInterleavedFloat(int source_offset,
+                          int destination_offset,
+                          int num_channels,
+                          float* buffer) const;
   void ToInterleavedPartial(int start_frame, int frames, int bytes_per_sample,
                             void* dest) const;
 
   // Similar to FromInterleaved() above, but meant for streaming sources.  Does
   // not zero out remaining frames, the caller is responsible for doing so using
   // ZeroFramesPartial().  Frames are deinterleaved from the start of |source|
   // to channel(x)[start_frame].
   void FromInterleavedPartial(const void* source, int start_frame, int frames,
                               int bytes_per_sample);
 
@@ skipping 76 matching lines @@
 
   AudioBusRefCounted(int channels, int frames);
   ~AudioBusRefCounted() override;
 
   DISALLOW_COPY_AND_ASSIGN(AudioBusRefCounted);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_AUDIO_BUS_H_