BaiduAsrOnline Class Reference

#include <asr_online.h>

Public Member Functions
void	getPCMData (struct DataBuff pcm_buff)
	获取pcm数据接口. More...
void	getPcmFileData ()
	读取pcm文件里的音频数据,并将数据的内容和数据大小存入pcm_data_结构体. More...
void	initAndConfigAsr ()
	百度语音识别模块的初始化,设置asr相关参数. More...
struct DataBuff	recordThroughMIC (const float record_time, bool enable_audio_save)
	录音接口. More...
std::string	resultFromJson ()
	从完整的json语音识别结果中解析出需要的字符串结果. More...
char *	runAsrAndRecog ()
	将pcm_data_结构体里存储的音频用于百度在线语音识别并获取识别结果. More...
void	setAsrParams (const std::string base_path, const std::string pcm_file, const int channel)
	设置语音模块需外部传入的路径等参数. More...
void	speechGetToken ()
	获取百度在线语音识别的Token. More...
void	stopRecordThroughMIC ()
	关闭录音设备. More...
void	uninitAsr ()
	一次识别结束后释放资源. More...

Private Member Functions
struct DataBuff	getOneChannelData ()
	从双声道数据中分离出单声道数据. More...
void	praseToken ()
	从json中解析出token值. More...
void	saveRecordDataToFile ()
	把录音数据存入/cache/pcm/目录下的pcm文件里，以次序和时间命名. More...

Static Private Member Functions
static size_t	writefunc (void *ptr, size_t size, size_t nmemb, char **result)
	libcurl 返回回调函数. More...

Private Attributes
const std::string	API_TOKEN_URL = "http://openapi.baidu.com/oauth/2.0/token"
struct AsrConfig	asr_config
struct recorder *	asr_record_ = NULL
std::string	base_path_
int	channel_
std::string	online_final_result
struct DataBuff	pcm_data_ = { NULL, 0 }
std::string	pcm_file_
FileOperation	pcm_file_operation
char *	rec_result_ = NULL
RecordAlsaAPI	record_alsa
int	record_loops_ = 0
std::string	token_
char *	url_response_ = NULL

Detailed Description

百度在线语音识别模块

Definition at line 38 of file asr_online.h.

Member Function Documentation

struct DataBuff BaiduAsrOnline::getOneChannelData ( )

private

从双声道数据中分离出单声道数据.

Returns

struct DataBuff pcm_data_ - 返回单声道的pcm数据和大小.

Definition at line 164 of file asr_online.cpp.

void BaiduAsrOnline::getPCMData

(

struct DataBuff

pcm_buff

)

获取pcm数据接口.

Parameters

pcm_buff

- [in] pcm数据的内容和数据大小.

Definition at line 158 of file asr_online.cpp.

void BaiduAsrOnline::getPcmFileData

(

)

读取pcm文件里的音频数据,并将数据的内容和数据大小存入pcm_data_结构体.

Definition at line 83 of file asr_online.cpp.

void BaiduAsrOnline::initAndConfigAsr

(

)

百度语音识别模块的初始化,设置asr相关参数.

Definition at line 34 of file asr_online.cpp.

void BaiduAsrOnline::praseToken ( )

private

从json中解析出token值.

Definition at line 10 of file asr_online.cpp.

struct DataBuff BaiduAsrOnline::recordThroughMIC	(	const float	record_time,
		bool	enable_audio_save
	)

录音接口.

Parameters

record_time	- [in] 录音时长(s).
enable_audio_save	- [in] 是否将录音保存到pcm文件.

Returns

struct DataBuff pcm_data_ - 返回录音的pcm数据和大小.

Definition at line 187 of file asr_online.cpp.

std::string BaiduAsrOnline::resultFromJson

(

)

从完整的json语音识别结果中解析出需要的字符串结果.

Returns

std::string online_final_result - 返回解析出的字符串识别结果.

Definition at line 241 of file asr_online.cpp.

char * BaiduAsrOnline::runAsrAndRecog

(

)

将pcm_data_结构体里存储的音频用于百度在线语音识别并获取识别结果.

Returns

char* rec_result_ - 返回在线语音识别的完整json结果.

Definition at line 88 of file asr_online.cpp.

void BaiduAsrOnline::saveRecordDataToFile ( )

private

把录音数据存入/cache/pcm/目录下的pcm文件里，以次序和时间命名.

Definition at line 178 of file asr_online.cpp.

void BaiduAsrOnline::setAsrParams	(	const std::string	base_path,
		const std::string	pcm_file,
		const int	channel
	)

设置语音模块需外部传入的路径等参数.

Parameters

base_path	- [in] 到/xbot_talker目录的结对路径.
pcm_file	- [in] 用于进行语音识别的录音文件.
channel	- [in] 音频声道数.1表示单声道,2表示双声道.

Definition at line 28 of file asr_online.cpp.

void BaiduAsrOnline::speechGetToken

(

)

获取百度在线语音识别的Token.

Definition at line 55 of file asr_online.cpp.

void BaiduAsrOnline::stopRecordThroughMIC

(

)

关闭录音设备.

Definition at line 261 of file asr_online.cpp.

void BaiduAsrOnline::uninitAsr

(

)

一次识别结束后释放资源.

Definition at line 268 of file asr_online.cpp.

size_t BaiduAsrOnline::writefunc ( void *  ptr, size_t  size, size_t  nmemb, char **  result  )

staticprivate

libcurl 返回回调函数.

Definition at line 128 of file asr_online.cpp.

Member Data Documentation

const std::string BaiduAsrOnline::API_TOKEN_URL = "http://openapi.baidu.com/oauth/2.0/token"

private

Definition at line 145 of file asr_online.h.

struct AsrConfig BaiduAsrOnline::asr_config

private

Definition at line 149 of file asr_online.h.

struct recorder* BaiduAsrOnline::asr_record_ = NULL

private

Definition at line 146 of file asr_online.h.

std::string BaiduAsrOnline::base_path_

private

Definition at line 139 of file asr_online.h.

int BaiduAsrOnline::channel_

private

Definition at line 141 of file asr_online.h.

std::string BaiduAsrOnline::online_final_result

private

Definition at line 138 of file asr_online.h.

struct DataBuff BaiduAsrOnline::pcm_data_ = { NULL, 0 }

private

Definition at line 136 of file asr_online.h.

std::string BaiduAsrOnline::pcm_file_

private

Definition at line 140 of file asr_online.h.

FileOperation BaiduAsrOnline::pcm_file_operation

private

Definition at line 147 of file asr_online.h.

char* BaiduAsrOnline::rec_result_ = NULL

private

Definition at line 137 of file asr_online.h.

RecordAlsaAPI BaiduAsrOnline::record_alsa

private

Definition at line 148 of file asr_online.h.

int BaiduAsrOnline::record_loops_ = 0

private

Definition at line 142 of file asr_online.h.

std::string BaiduAsrOnline::token_

private

Definition at line 143 of file asr_online.h.

char* BaiduAsrOnline::url_response_ = NULL

private

Definition at line 144 of file asr_online.h.

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The documentation for this class was generated from the following files:

• asr_online.h
• asr_online.cpp