Add sample ATSC TvInputService app.

Change-Id: I67204020bf1eb0c833d507cb0c9e4914e5985b3c
2014-04-18 21:08:35 +09:00
parent f93d490356
commit 0113785a39
11 changed files with 1075 additions and 0 deletions
--- a/samples/AtscTvInput/src/com/example/android/atsctvinput/SampleTsStream.java
+++ b/samples/AtscTvInput/src/com/example/android/atsctvinput/SampleTsStream.java
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * 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.atsctvinput;
+
+import android.content.Context;
+import android.util.Log;
+import android.util.Pair;
+
+import com.example.android.atsctvinput.PSIPParser.PSIPOutputListener;
+import com.example.android.atsctvinput.SectionParser.EITItem;
+import com.example.android.atsctvinput.SectionParser.VCTItem;
+import com.example.atsctvinput.R;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.List;
+
+public class SampleTsStream {
+    private static final String TAG = "SampleTsStream";
+    /*
+     * Sample MPEG2 transport streams which include ATSC PSIP data.
+     * In order to play the stream with Android mediaplayer, each stream has exactly one program
+     * and video and audio tracks are transcoded to MPEG4 and AAC respectively.
+     */
+    public static final TsStream[] SAMPLES = new TsStream[] {
+        new TsStream(R.raw.freq_1_prog_1, 1, 1),
+        new TsStream(R.raw.freq_2_prog_1029, 2, 1029),
+    };
+
+    private static final int READ_BUF_SIZE = 188;
+
+    public static String getTuneInfo(TsStream stream) {
+        return Long.toString(stream.mFrequency) + "," + Integer.toString(stream.mProgramNumber);
+    }
+
+    public static TsStream getTsStreamFromTuneInfo(String tuneInfo) {
+        String values[] = tuneInfo.split(",");
+        if (values.length != 2) {
+            return null;
+        }
+        long freq = Long.parseLong(values[0]);
+        int programNumber = Integer.parseInt(values[1]);
+        for (TsStream s : SAMPLES) {
+            if (s.mFrequency == freq && s.mProgramNumber == programNumber) {
+                return s;
+            }
+        }
+        return null;
+    }
+
+    public static Pair<VCTItem, List<EITItem>> extractChannelInfo(
+            Context context, final TsStream stream) {
+        final Object[] results = new Object[2];
+        PSIPParser mPSIPParser = new PSIPParser(new PSIPOutputListener() {
+            @Override
+            public void onEITPidDetected(int pid) {
+                // Do nothing;
+            }
+
+            @Override
+            public void onEITItemParsed(VCTItem channel, List<EITItem> items) {
+                if (channel.getProgramNumber() == stream.mProgramNumber) {
+                    results[0] = channel;
+                    results[1] = items;
+                }
+            }
+        });
+        InputStream in = context.getResources().openRawResource(stream.mResourceId);
+        byte[] buf = new byte[READ_BUF_SIZE];
+        try {
+            while (results[0] == null && results[1] == null
+                    && in.read(buf, 0, READ_BUF_SIZE) == READ_BUF_SIZE) {
+                mPSIPParser.feedTSData(buf, 0, buf.length);
+            }
+        } catch (IOException e) {
+            Log.e(TAG, "Error while detecting channel from freq " + stream.mFrequency
+                    + " program number " + stream.mProgramNumber);
+        } finally {
+            try {
+                in.close();
+            } catch (IOException e) {
+                Log.e(TAG, "Error while closing input stream for " + stream.mFrequency);
+            }
+        }
+        if (results[0] != null && results[1] != null) {
+            return new Pair<VCTItem, List<EITItem>>(
+                    (VCTItem) results[0], (List<EITItem>) results[1]);
+        }
+        return null;
+    }
+
+    public static class TsStream {
+        public final int mResourceId;
+        public final long mFrequency;
+        public final int mProgramNumber;
+
+        public TsStream(int resourceId, long frequency, int programNumber) {
+            mResourceId = resourceId;
+            mFrequency = frequency;
+            mProgramNumber = programNumber;
+        }
+    }
+}