SilentPatch/SilentPatchSA/FLACDecoderSA.h
2017-03-02 00:40:55 +01:00

40 lines
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2.1 KiB
C++

#pragma once
#include "AudioHardwareSA.h"
class CAEFLACDecoder : public CAEStreamingDecoder
{
private:
FLAC__StreamDecoder* pFLACDecoder;
FLAC__StreamMetadata* pStreamInfo;
unsigned int nCurrentSample;
private:
static FLAC__StreamDecoderReadStatus read_cb(const FLAC__StreamDecoder* decoder, FLAC__byte buffer[], size_t* bytes, void* client_data);
static FLAC__StreamDecoderWriteStatus write_cb(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 *const buffer[], void *client_data);
static void meta_cb(const FLAC__StreamDecoder* decoder, const FLAC__StreamMetadata *metadata, void *client_data);
static void error_cb(const FLAC__StreamDecoder* decoder, FLAC__StreamDecoderErrorStatus status, void* client_data);
static FLAC__StreamDecoderSeekStatus seek_cb(const FLAC__StreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data);
static FLAC__StreamDecoderTellStatus tell_cb(const FLAC__StreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
static FLAC__StreamDecoderLengthStatus length_cb(const FLAC__StreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data);
static FLAC__bool eof_cb(const FLAC__StreamDecoder *decoder, void *client_data);
public:
CAEFLACDecoder(CAEDataStream* stream)
: CAEStreamingDecoder(stream), pFLACDecoder(nullptr)
{}
virtual ~CAEFLACDecoder();
virtual bool Initialise() override;
virtual unsigned int FillBuffer(void* pBuf, unsigned long nLen) override;
virtual unsigned int GetStreamLengthMs() override
{ return pStreamInfo->data.stream_info.total_samples * 1000 / pStreamInfo->data.stream_info.sample_rate; }
virtual unsigned int GetStreamPlayTimeMs() override
{ return nCurrentSample * 1000 / pStreamInfo->data.stream_info.sample_rate; }
virtual void SetCursor(unsigned int nTime) override
{ FLAC__stream_decoder_seek_absolute(pFLACDecoder, nTime * pStreamInfo->data.stream_info.sample_rate / 1000); }
virtual unsigned int GetSampleRate() override
{ return pStreamInfo->data.stream_info.sample_rate; }
virtual unsigned int GetStreamID() override
{ return GetStream()->GetID(); }
};