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45 lines
2.4 KiB
C++
45 lines
2.4 KiB
C++
#pragma once
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#include "AudioHardwareSA.h"
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class CAEFLACDecoder : public CAEStreamingDecoder
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{
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private:
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FLAC__StreamDecoder* m_FLACdecoder;
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FLAC__StreamMetadata* m_streamMeta;
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FLAC__uint64 m_currentSample;
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FLAC__int32* m_buffer;
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size_t m_curBlockSize, m_maxBlockSize;
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size_t m_bufferCursor;
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bool m_eof;
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private:
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static FLAC__StreamDecoderReadStatus read_cb(const FLAC__StreamDecoder* decoder, FLAC__byte buffer[], size_t* bytes, void* client_data);
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static FLAC__StreamDecoderWriteStatus write_cb(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 *const buffer[], void *client_data);
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static void meta_cb(const FLAC__StreamDecoder* decoder, const FLAC__StreamMetadata *metadata, void *client_data);
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static void error_cb(const FLAC__StreamDecoder* decoder, FLAC__StreamDecoderErrorStatus status, void* client_data);
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static FLAC__StreamDecoderSeekStatus seek_cb(const FLAC__StreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data);
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static FLAC__StreamDecoderTellStatus tell_cb(const FLAC__StreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
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static FLAC__StreamDecoderLengthStatus length_cb(const FLAC__StreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data);
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static FLAC__bool eof_cb(const FLAC__StreamDecoder *decoder, void *client_data);
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public:
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CAEFLACDecoder(CAEDataStream* stream)
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: CAEStreamingDecoder(stream), m_FLACdecoder(nullptr), m_streamMeta(nullptr)
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, m_buffer(nullptr), m_curBlockSize(0), m_maxBlockSize(0), m_bufferCursor(0)
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{}
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virtual ~CAEFLACDecoder();
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virtual bool Initialise() override;
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virtual uint32_t FillBuffer(void* pBuf, uint32_t nLen) override;
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virtual uint32_t GetStreamLengthMs() override
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{ return uint32_t((m_streamMeta->data.stream_info.total_samples * 1000) / m_streamMeta->data.stream_info.sample_rate); }
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virtual uint32_t GetStreamPlayTimeMs() override
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{ return uint32_t((m_currentSample * 1000) / m_streamMeta->data.stream_info.sample_rate); }
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virtual void SetCursor(uint32_t nTime) override
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{ FLAC__stream_decoder_seek_absolute(m_FLACdecoder, (uint64_t(nTime) * m_streamMeta->data.stream_info.sample_rate) / 1000); }
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virtual uint32_t GetSampleRate() override
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{ return m_streamMeta->data.stream_info.sample_rate; }
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virtual uint32_t GetStreamID() override
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{ return GetStream()->GetID(); }
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}; |