VS2017环境集成百度语音识别API工程

百度语音识别通过REST API的方式给开发者提供一个通用的HTTP接口，基于该接口，开发者可以轻松的获取语音识别能力，本工程演示了如何在VS2017下使用语音识别服务REST API，具体介绍可见 http://blog.csdn.net/update_sh/article/details/77914559

/***************************************************************************
 * 
 * Copyright （c） 2014 Baidu.com Inc. All Rights Reserved
 * 
 **************************************************************************/
 
#include “base64.h“

static const std::string base64_chars = 
             “ABCDEFGHIJKLMNOPQRSTUVWXYZ“
             “abcdefghijklmnopqrstuvwxyz“
             “0123456789+/“;


static inline bool is_base64（unsigned char c） {
  return （isalnum（c） || （c == ‘+‘） || （c == ‘/‘））;
}

std::string base64_encode（unsigned char const* bytes_to_encode unsigned int in_len） {
  std::string ret;
  int i = 0;
  int j = 0;
  unsigned char char_array_3[3];
  unsigned char char_array_4[4];

  while （in_len--） {
    char_array_3[i++] = *（bytes_to_encode++）;
    if （i == 3） {
      char_array_4[0] = （char_array_3[0] & 0xfc） >> 2;
      char_array_4[1] = （（char_array_3[0] & 0x03） << 4） + （（char_array_3[1] & 0xf0） >> 4）;
      char_array_4[2] = （（char_array_3[1] & 0x0f） << 2） + （（char_array_3[2] & 0xc0） >> 6）;
      char_array_4[3] = char_array_3[2] & 0x3f;

      for（i = 0; （i <4） ; i++）
        ret += base64_chars[char_array_4[i]];
      i = 0;
    }
  }

  if （i）
  {
    for（j = i; j < 3; j++）
      char_array_3[j] = ‘\0‘;

    char_array_4[0] = （char_array_3[0] & 0xfc） >> 2;
    char_array_4[1] = （（char_array_3[0] & 0x03） << 4） + （（char_array_3[1] & 0xf0） >> 4）;
    char_array_4[2] = （（char_array_3[1] & 0x0f） << 2） + （（char_array_3[2] & 0xc0） >> 6）;
    char_array_4[3] = char_array_3[2] & 0x3f;

    for （j = 0; （j < i + 1）; j++）
      ret += base64_chars[char_array_4[j]];

    while（（i++ < 3））
      ret += ‘=‘;

  }

  return ret;

}

std::string base64_decode（std::string const& encoded_string） {
  int in_len = encoded_string.size（）;
  int i = 0;
  int j = 0;
  int in_ = 0;
  unsigned char char_array_4[4] char_array_3[3];
  std::string ret;

  while （in_len-- && （ encoded_string[in_] != ‘=‘） && is_base64（encoded_string[in_]）） {
    char_array_4[i++] = encoded_string[in_]; in_++;
    if （i ==4） {
      for （i = 0; i <4; i++）
        char_array_4[i] = base64_chars.find（char_array_4[i]）;

      char_array_3[0] = （char_array_4[0] << 2） + （（char_array_4[1] & 0x30） >> 4）;
      char_array_3[1] = （（char_array_4[1] & 0xf） << 4） + （（char_array_4[2] & 0x3c） >> 2）;
      char_array_3[2] = （（char_array_4[2] & 0x3） << 6） + char_array_4[3];

      for （i = 0; （i < 3）; i++）
        ret += char_array_3[i];
      i = 0;
    }
  }

  if （i） {
    for （j = i; j <4; j++）
      char_array_4[j] = 0;

    for （j = 0; j <4; j++）
      char_array_4[j] = base64_chars.find（char_array_4[j]）;

    char_array_3[0] = （char_array_4[0] << 2） + （（char_array_4[1] & 0x30） >> 4）;
    char_array_3[1] = （（char_array_4[1] & 0xf） << 4） + （（char_array_4[2] & 0x3c） >> 2）;
    char_array_3[2] = （（char_array_4[2] & 0x3） << 6） + char_array_4[3];

    for （j = 0; （j < i - 1）; j++） ret += char_array_3[j];
  }

  return ret;
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       2935  2014-05-28 14:38  baidu_voice_reco\baidu_voice\base64.cpp

     文件        452  2014-05-29 10:51  baidu_voice_reco\baidu_voice\base64.h

     文件     331776  2017-09-08 18:02  baidu_voice_reco\baidu_voice\curl\bin\curl.exe

     文件    3001856  2017-09-07 16:43  baidu_voice_reco\baidu_voice\curl\bin\libcrypto-1_1-x64.dll

     文件     416768  2017-09-08 18:02  baidu_voice_reco\baidu_voice\curl\bin\libcurl.dll

     文件     219136  2016-11-02 16:37  baidu_voice_reco\baidu_voice\curl\bin\libssh2.dll

     文件     516608  2017-09-07 16:44  baidu_voice_reco\baidu_voice\curl\bin\libssl-1_1-x64.dll

     文件      96860  2017-08-08 00:42  baidu_voice_reco\baidu_voice\curl\include\curl\curl.h

     文件       3034  2017-08-14 08:04  baidu_voice_reco\baidu_voice\curl\include\curl\curlver.h

     文件       3473  2017-08-08 00:42  baidu_voice_reco\baidu_voice\curl\include\curl\easy.h

     文件       2071  2017-08-08 00:42  baidu_voice_reco\baidu_voice\curl\include\curl\mprintf.h

     文件      16094  2017-08-08 00:42  baidu_voice_reco\baidu_voice\curl\include\curl\multi.h

     文件       1329  2017-08-08 00:42  baidu_voice_reco\baidu_voice\curl\include\curl\stdcheaders.h

     文件      20711  2017-08-13 18:10  baidu_voice_reco\baidu_voice\curl\include\curl\system.h

     文件      42101  2017-08-08 00:42  baidu_voice_reco\baidu_voice\curl\include\curl\typecheck-gcc.h

     文件       8255  2017-09-08 18:02  baidu_voice_reco\baidu_voice\curl\lib\libcurl.exp

     文件      14074  2017-09-08 18:02  baidu_voice_reco\baidu_voice\curl\lib\libcurl.lib

     文件      11346  2017-07-26 17:40  baidu_voice_reco\baidu_voice\json\json-forwards.h

     文件      71025  2017-08-09 18:53  baidu_voice_reco\baidu_voice\json\json.h

     文件      11608  2017-09-08 18:45  baidu_voice_reco\baidu_voice\json-cpp\json\json-forwards.h

     文件      71793  2017-09-08 20:20  baidu_voice_reco\baidu_voice\json-cpp\json\json.h

     文件     157809  2017-09-08 20:03  baidu_voice_reco\baidu_voice\json-cpp\jsoncpp.cpp

     文件     156887  2017-08-09 18:53  baidu_voice_reco\baidu_voice\jsoncpp.cpp

     文件       7280  2017-09-09 12:46  baidu_voice_reco\baidu_voice\sample.cpp

     文件       1443  2017-09-09 13:22  baidu_voice_reco\baidu_voice_reco.sln

     文件       6360  2017-09-09 13:26  baidu_voice_reco\baidu_voice_reco.vcxproj

     文件       1173  2017-09-08 19:52  baidu_voice_reco\baidu_voice_reco.vcxproj.filters

     文件        375  2017-09-09 13:26  baidu_voice_reco\baidu_voice_reco.vcxproj.user

     文件      52512  2014-06-06 18:51  baidu_voice_reco\test.pcm

     目录          0  2017-09-09 13:20  baidu_voice_reco\baidu_voice\curl\include\curl

............此处省略13个文件信息