| // 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_ |