diff options
Diffstat (limited to 'tests/MusicServiceDemo/src/com/example/android/musicservicedemo/browser/MusicProvider.java')
| -rw-r--r-- | tests/MusicServiceDemo/src/com/example/android/musicservicedemo/browser/MusicProvider.java | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/tests/MusicServiceDemo/src/com/example/android/musicservicedemo/browser/MusicProvider.java b/tests/MusicServiceDemo/src/com/example/android/musicservicedemo/browser/MusicProvider.java new file mode 100644 index 0000000..15038d7 --- /dev/null +++ b/tests/MusicServiceDemo/src/com/example/android/musicservicedemo/browser/MusicProvider.java @@ -0,0 +1,266 @@ +/* + * Copyright (C) 2014 Google Inc. All Rights Reserved. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.example.android.musicservicedemo.browser; + +import android.database.MatrixCursor; +import android.media.session.PlaybackState; +import android.net.Uri; +import android.util.Log; + +import com.example.android.musicservicedemo.BrowserService; + +import org.json.JSONArray; +import org.json.JSONException; +import org.json.JSONObject; + +import java.io.BufferedInputStream; +import java.io.BufferedReader; +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.net.URLConnection; +import java.util.ArrayList; +import java.util.List; + +/** + * Utility class to get a list of MusicTrack's based on a server-side JSON + * configuration. + */ +public class MusicProvider { + + private static final String TAG = "MusicProvider"; + + private static final String MUSIC_URL = "http://storage.googleapis.com/automotive-media/music.json"; + + private static String MUSIC = "music"; + private static String TITLE = "title"; + private static String ALBUM = "album"; + private static String ARTIST = "artist"; + private static String GENRE = "genre"; + private static String SOURCE = "source"; + private static String IMAGE = "image"; + private static String TRACK_NUMBER = "trackNumber"; + private static String TOTAL_TRACK_COUNT = "totalTrackCount"; + private static String DURATION = "duration"; + + // Cache for music track data + private static List<MusicTrack> mMusicList; + + /** + * Get the cached list of music tracks + * + * @return + * @throws JSONException + */ + public List<MusicTrack> getMedia() throws JSONException { + if (null != mMusicList && mMusicList.size() > 0) { + return mMusicList; + } + return null; + } + + /** + * Get the list of music tracks from a server and return the list of + * MusicTrack objects. + * + * @return + * @throws JSONException + */ + public List<MusicTrack> retreiveMedia() throws JSONException { + if (null != mMusicList) { + return mMusicList; + } + int slashPos = MUSIC_URL.lastIndexOf('/'); + String path = MUSIC_URL.substring(0, slashPos + 1); + JSONObject jsonObj = parseUrl(MUSIC_URL); + + try { + JSONArray videos = jsonObj.getJSONArray(MUSIC); + if (null != videos) { + mMusicList = new ArrayList<MusicTrack>(); + for (int j = 0; j < videos.length(); j++) { + JSONObject music = videos.getJSONObject(j); + String title = music.getString(TITLE); + String album = music.getString(ALBUM); + String artist = music.getString(ARTIST); + String genre = music.getString(GENRE); + String source = music.getString(SOURCE); + // Media is stored relative to JSON file + if (!source.startsWith("http")) { + source = path + source; + } + String image = music.getString(IMAGE); + if (!image.startsWith("http")) { + image = path + image; + } + int trackNumber = music.getInt(TRACK_NUMBER); + int totalTrackCount = music.getInt(TOTAL_TRACK_COUNT); + int duration = music.getInt(DURATION) * 1000; // ms + + mMusicList.add(new MusicTrack(title, album, artist, genre, source, + image, trackNumber, totalTrackCount, duration)); + } + } + } catch (NullPointerException e) { + Log.e(TAG, "retreiveMedia", e); + } + return mMusicList; + } + + /** + * Download a JSON file from a server, parse the content and return the JSON + * object. + * + * @param urlString + * @return + */ + private JSONObject parseUrl(String urlString) { + InputStream is = null; + try { + java.net.URL url = new java.net.URL(urlString); + URLConnection urlConnection = url.openConnection(); + is = new BufferedInputStream(urlConnection.getInputStream()); + BufferedReader reader = new BufferedReader(new InputStreamReader( + urlConnection.getInputStream(), "iso-8859-1"), 8); + StringBuilder sb = new StringBuilder(); + String line = null; + while ((line = reader.readLine()) != null) { + sb.append(line); + } + return new JSONObject(sb.toString()); + } catch (Exception e) { + Log.d(TAG, "Failed to parse the json for media list", e); + return null; + } finally { + if (null != is) { + try { + is.close(); + } catch (IOException e) { + // ignore + } + } + } + } + + public MatrixCursor getRootContainerCurser() { + MatrixCursor matrixCursor = new MatrixCursor(BrowserService.MEDIA_CONTAINER_PROJECTION); + Uri.Builder pianoBuilder = new Uri.Builder(); + pianoBuilder.authority(BrowserService.AUTHORITY); + pianoBuilder.appendPath(BrowserService.PIANO_BASE_PATH); + matrixCursor.addRow(new Object[] { + pianoBuilder.build(), + BrowserService.PIANO_BASE_PATH, + "subtitle", + null, + 0 + }); + + Uri.Builder voiceBuilder = new Uri.Builder(); + voiceBuilder.authority(BrowserService.AUTHORITY); + voiceBuilder.appendPath(BrowserService.VOICE_BASE_PATH); + matrixCursor.addRow(new Object[] { + voiceBuilder.build(), + BrowserService.VOICE_BASE_PATH, + "subtitle", + null, + 0 + }); + return matrixCursor; + } + + public MatrixCursor getRootItemCursor(int type) { + if (type == BrowserService.NOW_PLAYING) { + MatrixCursor matrixCursor = new MatrixCursor(BrowserService.MEDIA_CONTAINER_PROJECTION); + + try { + // Just return all of the tracks for now + List<MusicTrack> musicTracks = retreiveMedia(); + for (MusicTrack musicTrack : musicTracks) { + Uri.Builder builder = new Uri.Builder(); + builder.authority(BrowserService.AUTHORITY); + builder.appendPath(BrowserService.NOW_PLAYING_PATH); + builder.appendPath(musicTrack.getTitle()); + matrixCursor.addRow(new Object[] { + builder.build(), + musicTrack.getTitle(), + musicTrack.getArtist(), + musicTrack.getImage(), + PlaybackState.ACTION_PLAY + }); + Log.d(TAG, "Uri " + builder.build()); + } + } catch (JSONException e) { + Log.e(TAG, "::getRootItemCursor:", e); + } + + Log.d(TAG, "cursor: " + matrixCursor.getCount()); + return matrixCursor; + } else if (type == BrowserService.PIANO) { + MatrixCursor matrixCursor = new MatrixCursor(BrowserService.MEDIA_CONTAINER_PROJECTION); + + try { + List<MusicTrack> musicTracks = retreiveMedia(); + for (MusicTrack musicTrack : musicTracks) { + Uri.Builder builder = new Uri.Builder(); + builder.authority(BrowserService.AUTHORITY); + builder.appendPath(BrowserService.PIANO_BASE_PATH); + builder.appendPath(musicTrack.getTitle()); + matrixCursor.addRow(new Object[] { + builder.build(), + musicTrack.getTitle(), + musicTrack.getArtist(), + musicTrack.getImage(), + PlaybackState.ACTION_PLAY + }); + Log.d(TAG, "Uri " + builder.build()); + } + } catch (JSONException e) { + Log.e(TAG, "::getRootItemCursor:", e); + } + + Log.d(TAG, "cursor: " + matrixCursor.getCount()); + return matrixCursor; + } else if (type == BrowserService.VOICE) { + MatrixCursor matrixCursor = new MatrixCursor(BrowserService.MEDIA_CONTAINER_PROJECTION); + + try { + List<MusicTrack> musicTracks = retreiveMedia(); + for (MusicTrack musicTrack : musicTracks) { + Uri.Builder builder = new Uri.Builder(); + builder.authority(BrowserService.AUTHORITY); + builder.appendPath(BrowserService.VOICE_BASE_PATH); + builder.appendPath(musicTrack.getTitle()); + matrixCursor.addRow(new Object[] { + builder.build(), + musicTrack.getTitle(), + musicTrack.getArtist(), + musicTrack.getImage(), + PlaybackState.ACTION_PLAY + }); + Log.d(TAG, "Uri " + builder.build()); + } + } catch (JSONException e) { + Log.e(TAG, "::getRootItemCursor:", e); + } + + Log.d(TAG, "cursor: " + matrixCursor.getCount()); + return matrixCursor; + + } + return null; + } +} |