74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
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/*
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* Copyright (c) 2008-2016 Allwinner Technology Co. Ltd.
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* All rights reserved.
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*
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* File : aencoder.h
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* Description : audio encoder api
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* History :
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*
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*/
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#ifndef AUDIO_ENCODER_H
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#define AUDIO_ENCODER_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum __AUDIO_ENC_RESULT
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{
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ERR_AUDIO_ENC_ABSEND = -2,
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ERR_AUDIO_ENC_UNKNOWN = -1,
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ERR_AUDIO_ENC_NONE = 0, //decode successed, no error
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ERR_AUDIO_ENC_PCMUNDERFLOW = 1, //pcm data is underflow
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ERR_AUDIO_ENC_OUTFRAME_UNDERFLOW = 2, //out frame buffer is underflow.
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ERR_AUDIO_ENC_
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} __audio_enc_result_t;
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enum AUDIO_ENCODER_TYPE
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{
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AUDIO_ENCODER_AAC_TYPE,
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AUDIO_ENCODER_LPCM_TYPE, //only used by mpeg2ts
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AUDIO_ENCODER_PCM_TYPE,
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AUDIO_ENCODER_MP3_TYPE,
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};
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typedef enum AUDIO_ENCODER_TYPE AUDIO_ENCODER_TYPE;
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typedef struct AudioEncConfig
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{
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AUDIO_ENCODER_TYPE nType;
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int nInSamplerate; //<2F><><EFBFBD><EFBFBD>fs
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int nInChan; //<2F><><EFBFBD><EFBFBD>pcm chan 1:mon 2:stereo
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int nBitrate; //bs
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int nSamplerBits; //only for 16bits
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int nOutSamplerate; //<2F><><EFBFBD><EFBFBD>fs,now OutSamplerate must equal InSamplerate
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int nOutChan; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> chan
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//for aac: 0:add head,1:raw data;
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//for pcm: 2:mpegTs pcm(big endian),
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//other: common pcm(little endian)
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int nFrameStyle;
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}AudioEncConfig;
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typedef void* AudioEncoder;
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AudioEncoder* CreateAudioEncoder();
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void DestroyAudioEncoder(AudioEncoder* pEncoder);
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int InitializeAudioEncoder(AudioEncoder *pEncoder, AudioEncConfig *pConfig);
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int ResetAudioEncoder(AudioEncoder* pEncoder);
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int EncodeAudioStream(AudioEncoder *pEncoder);
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int WriteAudioStreamBuffer(AudioEncoder *pEncoder, char* pBuf, int len);
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int RequestAudioFrameBuffer(AudioEncoder *pEncoder, char **pOutBuf,
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unsigned int *size, long long *pts, int *bufId);
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int ReturnAudioFrameBuffer(AudioEncoder *pEncoder, char *pOutBuf,
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unsigned int size, long long pts, int bufId);
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#ifdef __cplusplus
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}
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#endif
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#endif // AUDIO_ENC_API_H
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