1 /* 2 * Copyright (C) 2013 Google Inc. All Rights Reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.example.android.leanback; 18 19 import android.content.Context; 20 import android.util.Log; 21 22 import org.json.JSONArray; 23 import org.json.JSONException; 24 import org.json.JSONObject; 25 26 import java.io.BufferedInputStream; 27 import java.io.BufferedReader; 28 import java.io.IOException; 29 import java.io.InputStream; 30 import java.io.InputStreamReader; 31 import java.net.URLConnection; 32 import java.util.ArrayList; 33 import java.util.HashMap; 34 import java.util.List; 35 36 /* 37 * This class loads videos from a backend and saves them into a HashMap 38 */ 39 public class VideoProvider { 40 41 private static final String TAG = "VideoProvider"; 42 private static String TAG_MEDIA = "videos"; 43 private static String TAG_GOOGLE_VIDEOS = "googlevideos"; 44 private static String TAG_CATEGORY = "category"; 45 private static String TAG_STUDIO = "studio"; 46 private static String TAG_SOURCES = "sources"; 47 private static String TAG_DESCRIPTION = "description"; 48 private static String TAG_CARD_THUMB = "card"; 49 private static String TAG_BACKGROUND = "background"; 50 private static String TAG_TITLE = "title"; 51 52 private static HashMap<String, List<Movie>> mMovieList; 53 private static Context mContext; 54 private static String mPrefixUrl; 55 56 public static void setContext(Context context) { 57 if (mContext == null) 58 mContext = context; 59 } 60 61 protected JSONObject parseUrl(String urlString) { 62 Log.d(TAG, "Parse URL: " + urlString); 63 InputStream is = null; 64 65 mPrefixUrl = mContext.getResources().getString(R.string.prefix_url); 66 67 try { 68 java.net.URL url = new java.net.URL(urlString); 69 URLConnection urlConnection = url.openConnection(); 70 is = new BufferedInputStream(urlConnection.getInputStream()); 71 BufferedReader reader = new BufferedReader(new InputStreamReader( 72 urlConnection.getInputStream(), "iso-8859-1"), 8); 73 StringBuilder sb = new StringBuilder(); 74 String line = null; 75 while ((line = reader.readLine()) != null) { 76 sb.append(line); 77 } 78 String json = sb.toString(); 79 return new JSONObject(json); 80 } catch (Exception e) { 81 Log.d(TAG, "Failed to parse the json for media list", e); 82 return null; 83 } finally { 84 if (null != is) { 85 try { 86 is.close(); 87 } catch (IOException e) { 88 Log.d(TAG, "JSON feed closed", e); 89 } 90 } 91 } 92 } 93 94 public static HashMap<String, List<Movie>> getMovieList() { 95 return mMovieList; 96 } 97 98 public static HashMap<String, List<Movie>> buildMedia(Context ctx, String url) 99 throws JSONException { 100 if (null != mMovieList) { 101 return mMovieList; 102 } 103 mMovieList = new HashMap<String, List<Movie>>(); 104 105 JSONObject jsonObj = new VideoProvider().parseUrl(url); 106 JSONArray categories = jsonObj.getJSONArray(TAG_GOOGLE_VIDEOS); 107 if (null != categories) { 108 Log.d(TAG, "category #: " + categories.length()); 109 String title = new String(); 110 String videoUrl = new String(); 111 String bgImageUrl = new String(); 112 String cardImageUrl = new String(); 113 String studio = new String(); 114 for (int i = 0; i < categories.length(); i++) { 115 JSONObject category = categories.getJSONObject(i); 116 String category_name = category.getString(TAG_CATEGORY); 117 JSONArray videos = category.getJSONArray(TAG_MEDIA); 118 Log.d(TAG, 119 "category: " + i + " Name:" + category_name + " video length: " 120 + videos.length()); 121 List<Movie> categoryList = new ArrayList<Movie>(); 122 if (null != videos) { 123 for (int j = 0; j < videos.length(); j++) { 124 JSONObject video = videos.getJSONObject(j); 125 String description = video.getString(TAG_DESCRIPTION); 126 JSONArray videoUrls = video.getJSONArray(TAG_SOURCES); 127 if (null == videoUrls || videoUrls.length() == 0) { 128 continue; 129 } 130 title = video.getString(TAG_TITLE); 131 videoUrl = getVideoPrefix(category_name, videoUrls.getString(0)); 132 bgImageUrl = getThumbPrefix(category_name, title, 133 video.getString(TAG_BACKGROUND)); 134 cardImageUrl = getThumbPrefix(category_name, title, 135 video.getString(TAG_CARD_THUMB)); 136 studio = video.getString(TAG_STUDIO); 137 categoryList.add(buildMovieInfo(category_name, title, description, studio, 138 videoUrl, cardImageUrl, 139 bgImageUrl)); 140 } 141 mMovieList.put(category_name, categoryList); 142 } 143 } 144 } 145 return mMovieList; 146 } 147 148 private static Movie buildMovieInfo(String category, String title, 149 String description, String studio, String videoUrl, String cardImageUrl, 150 String bgImageUrl) { 151 Movie movie = new Movie(); 152 movie.setId(Movie.getCount()); 153 Movie.incCount(); 154 movie.setTitle(title); 155 movie.setDescription(description); 156 movie.setStudio(studio); 157 movie.setCategory(category); 158 movie.setCardImageUrl(cardImageUrl); 159 movie.setBackgroundImageUrl(bgImageUrl); 160 movie.setVideoUrl(videoUrl); 161 162 return movie; 163 } 164 165 private static String getVideoPrefix(String category, String videoUrl) { 166 String ret = ""; 167 ret = mPrefixUrl + category.replace(" ", "%20") + '/' + 168 videoUrl.replace(" ", "%20"); 169 return ret; 170 } 171 172 private static String getThumbPrefix(String category, String title, String imageUrl) { 173 String ret = ""; 174 175 ret = mPrefixUrl + category.replace(" ", "%20") + '/' + 176 title.replace(" ", "%20") + '/' + 177 imageUrl.replace(" ", "%20"); 178 return ret; 179 } 180 } 181
