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// Copyright 2014 The Chromium Authors
// 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 <stdint.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_
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