145 lines
3.2 KiB
C++
145 lines
3.2 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/Resource.h>
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#include <kiwano/base/ObjectBase.h>
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#include <mfapi.h>
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#include <mfidl.h>
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#include <mfreadwrite.h>
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namespace kiwano
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{
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namespace audio
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{
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class AudioModule;
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KGE_DECLARE_SMART_PTR(Transcoder);
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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 音频解码器
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*/
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class KGE_API Transcoder : public ObjectBase
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{
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friend class AudioModule;
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public:
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/**
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* \~chinese
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* @brief 音频数据缓冲
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*/
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struct Buffer
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{
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BYTE* data; ///< 音频数据
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uint32_t size; ///< 音频数据大小
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const WAVEFORMATEX* format; ///< 音频数据格式
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};
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Transcoder();
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~Transcoder();
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/// \~chinese
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/// @brief 获取数据缓冲
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Buffer GetBuffer() const;
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/// \~chinese
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/// @brief 清空数据缓冲
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void ClearBuffer();
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private:
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/// \~chinese
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/// @brief 解码本地音频文件
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HRESULT LoadMediaFile(const String& file_path);
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/// \~chinese
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/// @brief 解码音频资源
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HRESULT LoadMediaResource(const Resource& res);
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/// \~chinese
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/// @brief 读取音频源数据
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HRESULT ReadSource(IMFSourceReader* reader);
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private:
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BYTE* wave_data_;
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uint32_t wave_size_;
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WAVEFORMATEX* wave_format_;
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};
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class KGE_API TranscoderCache final : public Singleton<TranscoderCache>
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{
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friend Singleton<TranscoderCache>;
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public:
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/// \~chinese
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/// @brief 添加缓存
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inline void Add(size_t key, TranscoderPtr v)
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{
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cache_.insert(std::make_pair(key, v));
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}
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/// \~chinese
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/// @brief 获取缓存
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inline TranscoderPtr Get(size_t key) const
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{
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if (cache_.count(key))
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{
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return cache_.at(key);
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}
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return nullptr;
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}
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/// \~chinese
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/// @brief 移除缓存
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inline void Remove(size_t key)
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{
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cache_.erase(key);
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}
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/// \~chinese
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/// @brief 清空缓存
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inline void Clear()
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{
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cache_.clear();
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}
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~TranscoderCache()
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{
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Clear();
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}
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private:
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TranscoderCache() = default;
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private:
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UnorderedMap<size_t, TranscoderPtr> cache_;
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};
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/** @} */
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} // namespace audio
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} // namespace kiwano
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