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https://github.com/mudita/MuditaOS.git
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871b250d86
Refactor audio data path to fix several synchronization issues and excessive copy operations on large memory blocks. Introduce audio::Stream data structure to allow connecting audio source and sink with a zero-copy capability. Introduce system mechanisms: - critical section guard lock needed for stream synchronization - non-cacheable memory allocator to allocate memory for DMA safe buffers Update the Googletest CMake template to match the capabilities of the Catch2 template. Signed-off-by: Marcin Smoczyński <smoczynski.marcin@gmail.com> Signed-off-by: Hubert Chrzaniuk <hubert.chrzaniuk@mudita.com>
48 lines
1.2 KiB
C++
48 lines
1.2 KiB
C++
// Copyright (c) 2017-2020, Mudita Sp. z.o.o. All rights reserved.
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// For licensing, see https://github.com/mudita/MuditaOS/LICENSE.md
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#pragma once
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#include "Decoder.hpp"
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#include <vector>
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namespace audio
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{
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class decoderWAV : public Decoder
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{
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public:
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decoderWAV(const char *fileName);
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uint32_t decode(uint32_t samplesToRead, int16_t *pcmData) override;
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void setPosition(float pos) override;
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private:
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using WAVE_FormatTypeDef = struct
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{
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uint32_t ChunkID; /* 0 */
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uint32_t FileSize; /* 4 */
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uint32_t FileFormat; /* 8 */
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uint32_t SubChunk1ID; /* 12 */
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uint32_t SubChunk1Size; /* 16*/
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uint16_t AudioFormat; /* 20 */
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uint16_t NbrChannels; /* 22 */
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uint32_t SampleRate; /* 24 */
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uint32_t ByteRate; /* 28 */
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uint16_t BlockAlign; /* 32 */
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uint16_t BitPerSample; /* 34 */
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uint32_t SubChunk2ID; /* 36 */
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uint32_t SubChunk2Size; /* 40 */
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};
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std::vector<int32_t> pcmsamplesbuffer;
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WAVE_FormatTypeDef waveHeader;
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uint32_t bitsPerSample;
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};
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} // namespace audio
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