98 lines
2.6 KiB
C++
98 lines
2.6 KiB
C++
// Copyright (c) 2016-2018 Kiwano - Nomango
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#pragma once
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#include <kiwano/core/BinaryData.h>
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#include <kiwano/base/ObjectBase.h>
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#include <kiwano/platform/NativeObject.hpp>
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namespace kiwano
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{
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namespace audio
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{
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KGE_DECLARE_SMART_PTR(AudioData);
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/**
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* \addtogroup Audio
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* @{
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*/
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/**
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* \~chinese
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* @brief 音频格式
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*/
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enum class AudioFormat
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{
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PCM,
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};
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/**
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* \~chinese
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* @brief 音频元数据
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*/
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struct AudioMeta
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{
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AudioFormat format = AudioFormat::PCM; ///< 音频格式
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uint16_t channels = 2; ///< 声道，单声道为1，立体声为2
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uint32_t samples_per_sec = 44100; ///< 采样率，11025 表示 11.025kHz。PCM格式的采样率通常为44.1kHz
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uint16_t bits_per_sample = 16; ///< 位深，PCM格式为 8 或 16
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uint16_t block_align = 4; ///< 块对齐，PCM格式通常是 (channels * bits_per_sample) / 8
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inline uint32_t avg_bytes_per_sec() const noexcept
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{
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return uint32_t(this->samples_per_sec * this->block_align);
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}
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};
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/**
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* \~chinese
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* @brief 音频数据
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*/
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class AudioData : public NativeObject
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{
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public:
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/// \~chinese
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/// @brief 音频数据
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/// @param data 音频数据
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/// @param meta 音频元数据
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AudioData(const BinaryData& data, const AudioMeta& meta);
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/// \~chinese
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/// @brief 获取音频元数据
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AudioMeta GetMeta() const;
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/// \~chinese
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/// @brief 获取数据
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BinaryData GetData() const;
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protected:
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AudioData() = default;
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protected:
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BinaryData data_;
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AudioMeta meta_;
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};
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/** @} */
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} // namespace audio
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} // namespace kiwano
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