[PPAPI][MediaStream] Rename AudioFrame to AudioBuffer

ppapi/cpp/audio_buffer.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.
+
+#ifndef PPAPI_CPP_AUDIO_BUFFER_H_
+#define PPAPI_CPP_AUDIO_BUFFER_H_
+
+#include "ppapi/c/ppb_audio_buffer.h"
+#include "ppapi/cpp/resource.h"
+
+namespace pp {
+
+class AudioBuffer : public Resource {
+ public:
+  /// Default constructor for creating an is_null()
+  /// <code>AudioBuffer</code> object.
+  AudioBuffer();
+
+  /// The copy constructor for <code>AudioBuffer</code>.
+  ///
+  /// @param[in] other A reference to an <code>AudioBuffer</code>.
+  AudioBuffer(const AudioBuffer& other);
+
+  /// Constructs an <code>AudioBuffer</code> from a <code>Resource</code>.
+  ///
+  /// @param[in] resource A <code>PPB_AudioBuffer</code> resource.
+  explicit AudioBuffer(const Resource& resource);
+
+  /// A constructor used when you have received a <code>PP_Resource</code> as a
+  /// return value that has had 1 ref added for you.
+  ///
+  /// @param[in] resource A <code>PPB_AudioBuffer</code> resource.
+  AudioBuffer(PassRef, PP_Resource resource);
+
+  virtual ~AudioBuffer();
+
+  /// Gets the timestamp of the audio buffer.
+  ///
+  /// @return A <code>PP_TimeDelta</code> containing the timestamp of the audio
+  /// buffer. Given in seconds since the start of the containing audio stream.
+  PP_TimeDelta GetTimestamp() const;
+
+  /// Sets the timestamp of the audio buffer.
+  ///
+  /// @param[in] timestamp A <code>PP_TimeDelta</code> containing the timestamp
+  /// of the audio buffer. Given in seconds since the start of the containing
+  /// audio stream.
+  void SetTimestamp(PP_TimeDelta timestamp);
+
+  /// Gets the sample rate of the audio buffer.
+  ///
+  /// @return The sample rate of the audio buffer.
+  PP_AudioBuffer_SampleRate GetSampleRate() const;
+
+  /// Gets the sample size of the audio buffer in bytes.
+  ///
+  /// @return The sample size of the audio buffer in bytes.
+  PP_AudioBuffer_SampleSize GetSampleSize() const;
+
+  /// Gets the number of channels in the audio buffer.
+  ///
+  /// @return The number of channels in the audio buffer.
+  uint32_t GetNumberOfChannels() const;
+
+  /// Gets the number of samples in the audio buffer.
+  ///
+  /// @return The number of samples in the audio buffer.
+  /// For example, at a sampling rate of 44,100 Hz in stereo audio, a buffer
+  /// containing 4,410 * 2 samples would have a duration of 100 milliseconds.
+  uint32_t GetNumberOfSamples() const;
+
+  /// Gets the data buffer containing the audio buffer samples.
+  ///
+  /// @return A pointer to the beginning of the data buffer.
+  void* GetDataBuffer();
+
+  /// Gets the size of data buffer in bytes.
+  ///
+  /// @return The size of the data buffer in bytes.
+  uint32_t GetDataBufferSize() const;
+};
+
+}  // namespace pp
+
+#endif  // PPAPI_CPP_AUDIO_BUFFER_H_