[PPAPI] Pepper MediaStream API audio track implementation and example.

ppapi/c/ppb_audio_frame.h

 /* Copyright 2014 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.
  */
 
-/* From ppb_audio_frame.idl modified Thu Jan  9 14:39:24 2014. */
+/* From ppb_audio_frame.idl modified Thu Jan 16 15:39:03 2014. */
 
 #ifndef PPAPI_C_PPB_AUDIO_FRAME_H_
 #define PPAPI_C_PPB_AUDIO_FRAME_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/c/pp_time.h"
+#include "ppapi/c/ppb_audio_config.h"
 
 #define PPB_AUDIOFRAME_INTERFACE_0_1 "PPB_AudioFrame;0.1" /* dev */
 /**
  * @file
  * Defines the <code>PPB_AudioFrame</code> interface.
  */
 
 
 /**
  * @addtogroup Interfaces
@@ skipping 23 matching lines @@
    * Sets the timestamp of the audio frame.
    *
    * @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame
    * resource.
    * @param[in] timestamp A <code>PP_TimeDelta</code> containing the timestamp
    * of the audio frame. Given in seconds since the start of the containing
    * audio stream.
    */
   void (*SetTimestamp)(PP_Resource frame, PP_TimeDelta timestamp);
   /**
+   * Gets the sample rate of the audio frame.
+   *
+   * @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame
+   * resource.
+   *
+   * @return The sample rate of the audio frame.
+   */
+  PP_AudioSampleRate (*GetSampleRate)(PP_Resource frame);
+  /**
    * Gets the sample size of the audio frame.
    *
    * @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame
    * resource.
    *
    * @return The sample size of the audio frame.
    */
   uint32_t (*GetSampleSize)(PP_Resource frame);
   /**
    * Gets the number of channels in the audio frame.
@@ skipping 33 matching lines @@
    * @return The size of the data buffer in bytes.
    */
   uint32_t (*GetDataBufferSize)(PP_Resource frame);
 };
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_PPB_AUDIO_FRAME_H_ */