(Delphi ActiveX) VoiceBase -- Retrieve JSON Transcript

Retrieves a JSON transcript for a media file.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
accessToken: WideString;
http: TChilkatHttp;
sbAuth: TChilkatStringBuilder;
sbUrl: TChilkatStringBuilder;
replaceCount: Integer;
strJson: WideString;
json: TChilkatJsonObject;
numWords: Integer;
i: Integer;

begin
// This example assumes the Chilkat HTTP API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// Insert your Bearer token here:
accessToken := 'VOICEBASE_TOKEN';

http := TChilkatHttp.Create(Self);

// Add the access (bearer) token to the request, which is a header
// having the following format:
// Authorization: Bearer <userAccessToken>
sbAuth := TChilkatStringBuilder.Create(Self);
sbAuth.Append('Bearer ');
sbAuth.Append(accessToken);
http.SetRequestHeader('Authorization',sbAuth.GetAsString());

sbUrl := TChilkatStringBuilder.Create(Self);
sbUrl.Append('https://apis.voicebase.com/v2-beta/media/$MEDIA_ID/transcripts/latest');
replaceCount := sbUrl.Replace('$MEDIA_ID','f9b9bb88-d52c-4960-bcef-d516a9f85594');

strJson := http.QuickGetStr(sbUrl.GetAsString());
if (http.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

// The response should be JSON, even if an error.
json := TChilkatJsonObject.Create(Self);
json.Load(strJson);
json.EmitCompact := 0;

Memo1.Lines.Add('Response status code = ' + IntToStr(http.LastStatus));

if (http.LastStatus <> 200) then
  begin
    Memo1.Lines.Add(json.Emit());
    Memo1.Lines.Add('Failed');
    Exit;
  end;

// See the sample JSON response below..

// Iterate over the words..
numWords := json.SizeOfArray('transcripts.latest.words');
i := 0;
while i < numWords do
  begin
    json.I := i;
    Memo1.Lines.Add(json.StringOf('transcripts.latest.words[i].w'));
    i := i + 1;
  end;

Memo1.Lines.Add('Success.');

// A sample JSON response:

// { 
//   "_links": { 
//     "self": { 
//       "href": "/v2-beta/media/f9b9bb88-d52c-4960-bcef-d516a9f85594/transcripts/latest"
//     }
//   },
//   "transcripts": { 
//     "latest": { 
//       "revision": "b25e81dc-ae3e-4f9d-8008-1d56a283c17f",
//       "engine": "standard",
//       "confidence": 2.196210728898151,
//       "words": [
//         { 
//           "p": 0,
//           "s": 830,
//           "c": 0.14,
//           "e": 870,
//           "w": "You"
//         },
//         { 
//           "p": 1,
//           "s": 1860,
//           "c": 0.432,
//           "e": 1920,
//           "w": "know"
//         },
//         { 
//           "p": 2,
//           "s": 1930,
//           "c": 0.288,
//           "e": 2250,
//           "w": "that's"
//         },
//         { 
//           "p": 3,
//           "s": 2250,
//           "c": 0.923,
//           "e": 2300,
//           "w": "a"
//         },
// ...
end;