Android 앱에서 AcoustID API 사용하기

Question

AcoustID API를 사용하는 Android 앱을 만들고 싶습니다. 나의 이해에서 그것은 C + + API이고 나는 이것을 위해 안드로이드 NDK를 사용해야한다. 궁금한 점은 Java로 작성된이 API의 샘플을 발견했는데 이것이 실제로 AcoustID API인지 또는 일부 적응인지 여부는 알 수 없습니다.

또한 AcoustID를 사용하면 NDK를 사용해야한다는 것을 의미합니다. NSK를 사용해야 할 경우 Java 대안이 있는지 알고 싶습니다. 나는 만족스러운 결과를 찾을 수 없었다.

이

는 자바 샘플 내가 찾은되어

편집

package net.filebot.web; 

import static java.util.Collections.*; 
import static net.filebot.util.FileUtilities.*; 
import static net.filebot.web.WebRequest.*; 

import java.io.File; 
import java.io.IOException; 
import java.io.InputStreamReader; 
import java.lang.ProcessBuilder.Redirect; 
import java.net.URL; 
import java.util.ArrayList; 
import java.util.HashMap; 
import java.util.LinkedHashMap; 
import java.util.LinkedList; 
import java.util.List; 
import java.util.Map; 
import java.util.Scanner; 
import java.util.concurrent.TimeUnit; 
import java.util.logging.Level; 
import java.util.logging.Logger; 

import javax.swing.Icon; 

import net.filebot.Cache; 
import net.filebot.ResourceManager; 

import org.json.simple.parser.JSONParser; 
import org.json.simple.parser.ParseException; 

public class AcoustIDClient implements MusicIdentificationService { 

    private static final FloodLimit REQUEST_LIMIT = new FloodLimit(3, 1, TimeUnit.SECONDS); 

    private String apikey; 

    public AcoustIDClient(String apikey) { 
     this.apikey = apikey; 
    } 

    @Override 
    public String getName() { 
     return "AcoustID"; 
    } 

    @Override 
    public Icon getIcon() { 
     return ResourceManager.getIcon("search.acoustid"); 
    } 

    @Override 
    public Map<File, AudioTrack> lookup(Iterable<File> files) throws Exception { 
     Map<File, AudioTrack> results = new LinkedHashMap<File, AudioTrack>(); 

     for (Map<String, String> fp : fpcalc(files)) { 
      results.put(new File(fp.get("FILE")), parse(lookup(fp.get("DURATION"), fp.get("FINGERPRINT")))); 
     } 
     return results; 
    } 

    public String lookup(File file) throws Exception { 
     Map<String, String> fp = fpcalc(singleton(file)).get(0); 
     return lookup(fp.get("DURATION"), fp.get("FINGERPRINT")); 
    } 

    public String lookup(String duration, String fingerprint) throws IOException, InterruptedException, ParseException { 
     // http://api.acoustid.org/v2/lookup?client=8XaBELgH&meta=recordings+releasegroups+compress&duration=641&fingerprint=AQABz0qUkZK4oOfhL-CPc4e5C_wW2H2QH9uDL4cvoT8UNQ-eHtsE8cceeFJx-LiiHT-aPzhxoc-Opj_eI5d2hOFyMJRzfDk-QSsu7fBxqZDMHcfxPfDIoPWxv9C1o3yg44d_3Df2GJaUQeeR-cb2HfaPNsdxHj2PJnpwPMN3aPcEMzd-_MeB_Ej4D_CLP8ghHjkJv_jh_UDuQ8xnILwunPg6hF2R8HgzvLhxHVYP_ziJX0eKPnIE1UePMByDJyg7wz_6yELsB8n4oDmDa0Gv40hf6D3CE3_wH6HFaxCPUD9-hNeF5MfWEP3SCGym4-SxnXiGs0mRjEXD6fgl4LmKWrSChzzC33ge9PB3otyJMk-IVC6R8MTNwD9qKQ_CC8kPv4THzEGZS8GPI3x0iGVUxC1hRSizC5VzoamYDi-uR7iKPhGSI82PkiWeB_eHijvsaIWfBCWH5AjjCfVxZ1TQ3CvCTclGnEMfHbnZFA8pjD6KXwd__Cn-Y8e_I9cq6CR-4S9KLXqQcsxxoWh3eMxiHI6TIzyPv0M43YHz4yte-Cv-4D16Hv9F9C9SPUdyGtZRHV-OHEeeGD--BKcjVLOK_NCDXMfx44dzHEiOZ0Z44Rf6DH5R3uiPj4d_PKolJNyRJzyu4_CTD2WOvzjKH9GPb4cUP1Av9EuQd8fGCFee4JlRHi18xQh96NLxkCgfWFKOH6WGeoe4I3za4c5hTscTPEZTES1x8kE-9MQPjT8a8gh5fPgQZtqCFj9MDvp6fDx6NCd07bjx7MLR9AhtnFnQ70GjOcV0opmm4zpY3SOa7HiwdTtyHa6NC4e-HN-OfC5-OP_gLe2QDxfUCz_0w9l65HiPAz9-IaGOUA7-4MZ5CWFOlIfe4yUa6AiZGxf6w0fFxsjTOdC6Itbh4mGD63iPH9-RFy909XAMj7mC5_BvlDyO6kGTZKJxHUd4NDwuZUffw_5RMsde5CWkJAgXnDReNEaP6DTOQ65yaD88HoeX8fge-DSeHo9Qa8cTHc80I-_RoHxx_UHeBxrJw62Q34Kd7MEfpCcu6BLeB1ePw6OO4sOF_sHhmB504WWDZiEu8sKPpkcfCT9xfej0o0lr4T5yNJeOvjmu40w-TDmqHXmYgfFhFy_M7tD1o0cO_B2ms2j-ACEEQgQgAIwzTgAGmBIKIImNQAABwgQATAlhDGCCEIGIIM4BaBgwQBogEBIOESEIA8ARI5xAhxEFmAGAMCKAURKQQpQzRAAkCCBQEAKkQYIYIQQxCixCDADCABMAE0gpJIgyxhEDiCKCCIGAEIgJIQByAhFgGACCACMRQEyBAoxQiHiCBCFOECQFAIgAABR2QAgFjCDMA0AUMIoAIMChQghChASGEGeYEAIAIhgBSErnJPPEGWYAMgw05AhiiGHiBBBGGSCQcQgwRYJwhDDhgCSCSSEIQYwILoyAjAIigBFEUQK8gAYAQ5BCAAjkjCCAEEMZAUQAZQCjCCkpCgFMCCiIcVIAZZgilAQAiSHQECOcQAQIc4QClAHAjDDGkAGAMUoBgyhihgEChFCAAWEIEYwIJYwViAAlHCBIGEIEAEIQAoBwwgwiEBAEEEOoEwBY4wRwxAhBgAcKAESIQAwwIowRFhoBhAE 
     URL url = new URL("http://api.acoustid.org/v2/lookup?client=" + apikey + "&meta=recordings+releasegroups+releases+tracks+compress&duration=" + duration + "&fingerprint=" + fingerprint); 

     Cache cache = Cache.getCache("web-datasource"); 
     String response = cache.get(url, String.class); 
     if (response != null) { 
      return response; 
     } 

     // respect rate limit 
     REQUEST_LIMIT.acquirePermit(); 
     response = readAll(getReader(url.openConnection())); 
     cache.put(url, response); 

     return response; 
    } 

    public AudioTrack parse(String json) throws IOException, InterruptedException, ParseException { 
     Map<?, ?> data = (Map<?, ?>) new JSONParser().parse(json); 

     if (!data.get("status").equals("ok")) { 
      throw new IOException("acoustid responded with error: " + data.get("status")); 
     } 
     try { 
      for (Object result : (List<?>) data.get("results")) { 
       try { 
        Map<?, ?> recording = (Map<?, ?>) ((List<?>) ((Map<?, ?>) result).get("recordings")).get(0); 

        String artist = (String) ((Map<?, ?>) ((List<?>) recording.get("artists")).get(0)).get("name"); 
        String title = (String) recording.get("title"); 

        AudioTrack audioTrack = new AudioTrack(artist, title, null); 
        try { 
         Map<?, ?> releaseGroup = (Map<?, ?>) ((List<?>) recording.get("releasegroups")).get(0); 
         List<?> releases = (List<?>) releaseGroup.get("releases"); 

         for (Object it : releases) { 
          try { 
           AudioTrack thisRelease = new AudioTrack(artist, title, null); 
           Map<?, ?> release = (Map<?, ?>) it; 
           Map<?, ?> date = (Map<?, ?>) release.get("date"); 
           try { 
            thisRelease.albumReleaseDate = new SimpleDate(Integer.parseInt(date.get("year").toString()), Integer.parseInt(date.get("month").toString()), Integer.parseInt(date.get("day").toString())); 
           } catch (Exception e) { 
            // ignore 
           } 

           if (thisRelease.albumReleaseDate == null || thisRelease.albumReleaseDate.getTimeStamp() >= (audioTrack.albumReleaseDate == null ? Long.MAX_VALUE : audioTrack.albumReleaseDate.getTimeStamp())) { 
            continue; 
           } 

           Map<?, ?> medium = (Map<?, ?>) ((List<?>) release.get("mediums")).get(0); 
           thisRelease.mediumIndex = new Integer(medium.get("position").toString()); 
           thisRelease.mediumCount = new Integer(release.get("medium_count").toString()); 

           Map<?, ?> track = (Map<?, ?>) ((List<?>) medium.get("tracks")).get(0); 
           thisRelease.trackIndex = new Integer(track.get("position").toString()); 
           thisRelease.trackCount = new Integer(medium.get("track_count").toString()); 

           try { 
            thisRelease.album = release.get("title").toString(); 
           } catch (Exception e) { 
            thisRelease.album = (String) releaseGroup.get("title"); 
           } 
           try { 
            thisRelease.albumArtist = (String) ((Map<?, ?>) ((List<?>) releaseGroup.get("artists")).get(0)).get("name"); 
           } catch (Exception e) { 
            thisRelease.albumArtist = null; 
           } 
           thisRelease.trackTitle = (String) track.get("title"); 

           if (!"Various Artists".equalsIgnoreCase(thisRelease.albumArtist) && (thisRelease.album == null || !thisRelease.album.contains("Greatest Hits"))) { 
            audioTrack = thisRelease; 
           } 
          } catch (Exception e) { 
           e.printStackTrace(); 
          } 
         } 
        } catch (Exception e) { 
         e.printStackTrace(); 
         // allow album to be null 
        } 
        return audioTrack; 
       } catch (Exception e) { 
       } 
      } 
     } catch (Exception e) { 
     } 
     return null; 
    } 

    public String getChromaprintCommand() { 
     // use fpcalc executable path as specified by the cmdline or default to "fpcalc" and let the shell figure it out 
     return System.getProperty("net.filebot.AcoustID.fpcalc", "fpcalc"); 
    } 

    public List<Map<String, String>> fpcalc(Iterable<File> files) throws IOException, InterruptedException { 
     List<String> command = new ArrayList<String>(); 
     command.add(getChromaprintCommand()); 
     for (File f : files) { 
      command.add(f.toString()); 
     } 

     Process process = null; 
     try { 
      ProcessBuilder processBuilder = new ProcessBuilder(command); 
      try { 
       processBuilder.redirectError(Redirect.INHERIT); 
      } catch (Throwable e) { 
       Logger.getLogger(AcoustIDClient.class.getName()).log(Level.WARNING, "Unable to inherit IO: " + e.getMessage()); 
      } 
      process = processBuilder.start(); 
     } catch (Exception e) { 
      throw new IOException("Failed to exec fpcalc: " + e.getMessage()); 
     } 

     Scanner scanner = new Scanner(new InputStreamReader(process.getInputStream(), "UTF-8")); 
     LinkedList<Map<String, String>> results = new LinkedList<Map<String, String>>(); 

     try { 
      while (scanner.hasNextLine()) { 
       String[] value = scanner.nextLine().split("=", 2); 
       if (value.length != 2) 
        continue; 

       if (results.isEmpty() || results.getLast().containsKey(value[0])) { 
        results.addLast(new HashMap<String, String>(3)); 
       } 
       results.getLast().put(value[0], value[1]); 
      } 
     } finally { 
      scanner.close(); 
     } 

     if (process.waitFor() != 0) { 
      throw new IOException("Failed to exec fpcalc: Exit code " + process.exitValue()); 
     } 

     return results; 
    } 
} 

: 나는 샘플의 소스를 발견했습니다 : Link to sample 하지만 난이 무엇인지 알아낼 수 없습니다이거나 방법 그것을 사용하십시오.

Answer 1

코드를 읽지 않으셨습니까? 분명히 C++ 라이브러리를 사용하지 않습니다 ... Process의 사용법을 통해 분명히 볼 수 있듯이 fpcalc를 호출하는 하위 프로세스를 사용하고 Process.getInputStream()에서 볼 수 있듯이 표준 출력 상기 하위 프로세스의