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/*
* Copyright (C) 2005-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#pragma once
#include "threads/CriticalSection.h"
#include "utils/RingBuffer.h"
struct AEAudioFormat;
class CFileItem;
class ICodec;
#define PACKET_SIZE 3840 // audio packet size - we keep 1 in reserve for gapless playback
// using a multiple of 1, 2, 3, 4, 5, 6 to guarantee track alignment
// note that 7 or higher channels won't work too well.
#define INPUT_SIZE PACKET_SIZE * 3 // input data size we read from the codecs at a time
// * 3 to allow 24 bit audio
#define OUTPUT_SAMPLES PACKET_SIZE // max number of output samples
#define INPUT_SAMPLES PACKET_SIZE // number of input samples (distributed over channels)
#define STATUS_NO_FILE 0
#define STATUS_QUEUING 1
#define STATUS_QUEUED 2
#define STATUS_PLAYING 3
#define STATUS_ENDING 4
#define STATUS_ENDED 5
// return codes from decoders
#define RET_ERROR -1
#define RET_SUCCESS 0
#define RET_SLEEP 1
class CAudioDecoder
{
public:
CAudioDecoder();
~CAudioDecoder();
bool Create(const CFileItem &file, int64_t seekOffset);
void Destroy();
int ReadSamples(int numsamples);
bool CanSeek();
int64_t Seek(int64_t time);
int64_t TotalTime();
void SetTotalTime(int64_t time);
void Start() { m_canPlay = true;}; // cause a pre-buffered stream to start.
int GetStatus() { return m_status; }
void SetStatus(int status) { m_status = status; }
AEAudioFormat GetFormat();
unsigned int GetChannels();
// Data management
unsigned int GetDataSize(bool checkPktSize);
void *GetData(unsigned int samples);
uint8_t* GetRawData(int &size);
ICodec *GetCodec() const { return m_codec; }
float GetReplayGain(float &peakVal);
private:
// pcm buffer
CRingBuffer m_pcmBuffer;
// output buffer (for transferring data from the Pcm Buffer to the rest of the audio chain)
float m_outputBuffer[OUTPUT_SAMPLES];
// input buffer (for transferring data from the Codecs to our Pcm Ringbuffer
uint8_t m_pcmInputBuffer[INPUT_SIZE];
float m_inputBuffer[INPUT_SAMPLES];
uint8_t *m_rawBuffer;
int m_rawBufferSize;
// status
bool m_eof;
int m_status;
bool m_canPlay;
// the codec we're using
ICodec* m_codec;
CCriticalSection m_critSection;
};
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