SilentPatch/SilentPatchSA/FLACDecoderSA.h
2024-01-28 16:12:16 +01:00

48 lines
No EOL
2.4 KiB
C++

#pragma once
#include "AudioHardwareSA.h"
// libflac
#include "FLAC\stream_decoder.h"
#include "FLAC\metadata.h"
class CAEFLACDecoder final : public CAEStreamingDecoder
{
private:
FLAC__StreamDecoder* m_FLACdecoder = nullptr;
FLAC__StreamMetadata* m_streamMeta = nullptr;
FLAC__uint64 m_currentSample;
FLAC__int32* m_buffer = nullptr;
size_t m_curBlockSize, m_maxBlockSize = 0;
size_t m_bufferCursor;
bool m_eof;
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)
{}
virtual ~CAEFLACDecoder() override;
virtual bool Initialise() override;
virtual uint32_t FillBuffer(void* pBuf, uint32_t nLen) override;
virtual uint32_t GetStreamLengthMs() const override
{ return uint32_t((m_streamMeta->data.stream_info.total_samples * 1000) / m_streamMeta->data.stream_info.sample_rate); }
virtual uint32_t GetStreamPlayTimeMs() const override
{ return uint32_t((m_currentSample * 1000) / m_streamMeta->data.stream_info.sample_rate); }
virtual void SetCursor(uint32_t nTime) override
{ FLAC__stream_decoder_seek_absolute(m_FLACdecoder, (uint64_t(nTime) * m_streamMeta->data.stream_info.sample_rate) / 1000); }
virtual uint32_t GetSampleRate() const override
{ return m_streamMeta->data.stream_info.sample_rate; }
virtual uint32_t GetStreamID() const override
{ return GetStream()->GetID(); }
};