imp_audio.h File Reference

IMP audio input and output header file. More...

#include <stdint.h>

Include dependency graph for imp_audio.h:

Go to the source code of this file.

Data Structures
struct	IMPAudioIOAttr
	Audio input and output device attribute. More...
struct	IMPAudioFrame
	Audio frame structure. More...
struct	IMPAudioIChnParam
	Audio channel parameter structure. More...
struct	IMPAudioOChnState
	Data cache state structure of audio output channel. More...
struct	IMPAudioStream
	Define audio stream structure. More...
struct	IMPAudioEncChnAttr
	Define audio encoding channel attribute structure. More...
struct	IMPAudioEncEncoder
	Define the encoder attribute structure. More...
struct	IMPAudioDecChnAttr
	Define the decoded channel attribute structure. More...
struct	IMPAudioDecDecoder
	Define decoder attribute structure. More...
struct	IMPAudioAgcConfig
	Define AGC gain structure. More...

Macros
#define	MAX_AUDIO_FRAME_NUM   50
	Maximum number of audio frames.

Enumerations
enum	IMPBlock { BLOCK = 0, NOBLOCK = 1 }
	Audio stream blocking type. More...
enum	IMPAudioSampleRate {   AUDIO_SAMPLE_RATE_8000 = 8000, AUDIO_SAMPLE_RATE_16000 = 16000, AUDIO_SAMPLE_RATE_24000 = 24000, AUDIO_SAMPLE_RATE_44100 = 44100,   AUDIO_SAMPLE_RATE_48000 = 48000, AUDIO_SAMPLE_RATE_96000 = 96000 }
	Audio sampling rate definition. More...
enum	IMPAudioBitWidth { AUDIO_BIT_WIDTH_16 = 16 }
	Audio sampling precision definition. More...
enum	IMPAudioSoundMode { AUDIO_SOUND_MODE_MONO = 1, AUDIO_SOUND_MODE_STEREO = 2 }
	Audio channel mode definition. More...
enum	IMPAudioPalyloadType {   PT_PCM = 0, PT_G711A = 1, PT_G711U = 2, PT_G726 = 3,   PT_AEC = 4, PT_ADPCM = 5, PT_MAX = 6 }
	Define audio payload type enumeration.
enum	IMPAudioDecMode { ADEC_MODE_PACK = 0, ADEC_MODE_STREAM = 1 }
	Define the decoding method. More...
enum	Level_ns { NS_LOW, NS_MODERATE, NS_HIGH, NS_VERYHIGH }
	Defines level of noise suppression. More...

Functions
int	IMP_AI_SetPubAttr (int audioDevId, IMPAudioIOAttr *attr)
	Set audio input device attribute. More...
int	IMP_AI_GetPubAttr (int audioDevId, IMPAudioIOAttr *attr)
	Get the attribute of the audio input device. More...
int	IMP_AI_Enable (int audioDevId)
	Enable audio input device. More...
int	IMP_AI_Disable (int audioDevId)
	Disable audio input device. More...
int	IMP_AI_EnableChn (int audioDevId, int aiChn)
	Enable audio input channel. More...
int	IMP_AI_DisableChn (int audioDevId, int aiChn)
	Disable audio input channel. More...
int	IMP_AI_PollingFrame (int audioDevId, int aiChn, unsigned int timeout_ms)
	Polling audio stream cache. More...
int	IMP_AI_GetFrame (int audioDevId, int aiChn, IMPAudioFrame *frm, IMPBlock block)
	Get audio frame. More...
int	IMP_AI_ReleaseFrame (int audioDevId, int aiChn, IMPAudioFrame *frm)
	Release audio frame. More...
int	IMP_AI_SetChnParam (int audioDevId, int aiChn, IMPAudioIChnParam *chnParam)
	Set audio input channel parameters. More...
int	IMP_AI_GetChnParam (int audioDevId, int aiChn, IMPAudioIChnParam *chnParam)
	Set audio input channel parameters. More...
int	IMP_AI_EnableAec (int aiDevId, int aiChn, int aoDevId, int aoChn)
	Enable audio echo cancellation feature of the specified audio input and audio output. More...
int	IMP_AI_DisableAec (int aiDevId, int aiChn)
	Disable audio echo cancellation feature. More...
int	IMP_AI_EnableNs (IMPAudioIOAttr *attr, int mode)
	Enable specified audio input noise suppression. More...
int	IMP_AI_DisableNs (void)
	Disable noise suppression. More...
int	IMP_AI_EnableAgc (IMPAudioIOAttr *attr, IMPAudioAgcConfig agcConfig)
	Enable automatic gain of audio input. More...
int	IMP_AI_DisableAgc (void)
	Disable AI automatic gain feature. More...
int	IMP_AO_EnableAgc (IMPAudioIOAttr *attr, IMPAudioAgcConfig agcConfig)
	Enable audio output automatic gain feature. More...
int	IMP_AO_DisableAgc (void)
	Disable AO automatic gain feature. More...
int	IMP_AI_EnableHpf (IMPAudioIOAttr *attr)
	Enable audio input for high pass filtering. More...
int	IMP_AI_DisableHpf (void)
	Disable AI high pass filtering function. More...
int	IMP_AO_EnableHpf (IMPAudioIOAttr *attr)
	Enable audio output for high pass filtering. More...
int	IMP_AO_DisableHpf (void)
	Disable AO high pass filtering function. More...
int	IMP_AO_SetPubAttr (int audioDevId, IMPAudioIOAttr *attr)
	Set audio input and output device attribute. More...
int	IMP_AO_GetPubAttr (int audioDevId, IMPAudioIOAttr *attr)
	Get audio input and output device attribute. More...
int	IMP_AO_Enable (int audioDevId)
	Enable audio output device. More...
int	IMP_AO_Disable (int audioDevId)
	Disable audio output device. More...
int	IMP_AO_EnableChn (int audioDevId, int aoChn)
	Enable audio output channel. More...
int	IMP_AO_DisableChn (int audioDevId, int aoChn)
	Disable audio output channel. More...
int	IMP_AO_SendFrame (int audioDevId, int aoChn, IMPAudioFrame *data, IMPBlock block)
	Send audio output frame. More...
int	IMP_AO_PauseChn (int audioDevId, int aoChn)
	Pause audio output channel. More...
int	IMP_AO_ResumeChn (int audioDevId, int aoChn)
	Resume audio output channel. More...
int	IMP_AO_ClearChnBuf (int audioDevId, int aoChn)
	Clear the current audio data cache in the audio output channel. More...
int	IMP_AO_QueryChnStat (int audioDevId, int aoChn, IMPAudioOChnState *status)
	Query the current audio data cache status in the audio output channel. More...
int	IMP_AENC_CreateChn (int aeChn, IMPAudioEncChnAttr *attr)
	Create audio encode channel. More...
int	IMP_AENC_DestroyChn (int aeChn)
	Destory audio encode channel. More...
int	IMP_AENC_SendFrame (int aeChn, IMPAudioFrame *frm)
	Send audio encoding audio frame. More...
int	IMP_AENC_PollingStream (int AeChn, unsigned int timeout_ms)
	Polling encoded audio stream cache. More...
int	IMP_AENC_GetStream (int aeChn, IMPAudioStream *stream, IMPBlock block)
	Get the encoded stream. More...
int	IMP_AENC_ReleaseStream (int aeChn, IMPAudioStream *stream)
	Releases the stream from the audio encoding channel. More...
int	IMP_AENC_RegisterEncoder (int *handle, IMPAudioEncEncoder *encoder)
	Register encoder. More...
int	IMP_AENC_ReleaseEncoder (int *handle)
	Release encoder. More...
int	IMP_ADEC_CreateChn (int adChn, IMPAudioDecChnAttr *attr)
	Create audio decode channel. More...
int	IMP_ADEC_DestroyChn (int adChn)
	Destory audio decoding channel. More...
int	IMP_ADEC_SendStream (int adChn, IMPAudioStream *stream, IMPBlock block)
	Send audio stream to audio decoding channel. More...
int	IMP_ADEC_PollingStream (int AdChn, unsigned int timeout_ms)
	Polling decode audio stream cache. More...
int	IMP_ADEC_GetStream (int adChn, IMPAudioStream *stream, IMPBlock block)
	Get the decoded stream. More...
int	IMP_ADEC_ReleaseStream (int adChn, IMPAudioStream *stream)
	Release of the stream from the audio decoding channel. More...
int	IMP_ADEC_ClearChnBuf (int adChn)
	Clears the current audio data cache in the audio decode channel. More...
int	IMP_ADEC_RegisterDecoder (int *handle, IMPAudioDecDecoder *decoder)
	Register decoder. More...
int	IMP_ADEC_ReleaseDecoder (int *handle)
	Unregister Decoder. More...
int	IMP_AI_SetVol (int audioDevId, int aiChn, int aiVol)
	ACODEC configuration. More...
int	IMP_AI_GetVol (int audioDevId, int aiChn, int *vol)
	Get the volume of the audio input. More...
int	IMP_AI_SetVolMute (int audioDevId, int aiChn, int mute)
	Set audio input mute. More...
int	IMP_AO_SetVol (int audioDevId, int aoChn, int aoVol)
	Set audio output channel volume. More...
int	IMP_AO_GetVol (int audioDevId, int aoChn, int *vol)
	Get audio output channel volume. More...
int	IMP_AO_SetVolMute (int audioDevId, int aoChn, int mute)
	Set audio output mute. More...
int	IMP_AI_SetGain (int audioDevId, int aiChn, int aiGain)
	Set audio input gain. More...
int	IMP_AI_GetGain (int audioDevId, int aiChn, int *aiGain)
	Get AI gain value. More...
int	IMP_AO_SetGain (int audioDevId, int aoChn, int aoGain)
	Set audio output gain. More...
int	IMP_AO_GetGain (int audioDevId, int aoChn, int *aoGain)
	Get audio output gain. More...
int	IMP_AO_Soft_Mute (int audioDevId, int aoChn)
	Output soft mute control. More...
int	IMP_AO_Soft_UNMute (int audioDevId, int aoChn)
	Output soft unmute control. More...
int	IMP_AI_GetFrameAndRef (int audioDevId, int aiChn, IMPAudioFrame *frm, IMPAudioFrame *ref, IMPBlock block)
	Get audio frame and output reference frame. More...
int	IMP_AI_EnableAecRefFrame (int audioDevId, int aiChn, int audioAoDevId, int aoChn)
	Open access reference frame. More...
int	IMP_AI_DisableAecRefFrame (int audioDevId, int aiChn, int audioAoDevId, int aoChn)
	Close access to the reference frame. More...
int	IMP_AO_CacheSwitch (int audioDevId, int aoChn, int cache_en)
	close audio play cache More...
int	IMP_AO_FlushChnBuf (int audioDevId, int aoChn)

Detailed Description

IMP audio input and output header file.