1 files changed, 137 insertions, 0 deletions
diff --git a/tuner/src/com/android/tv/tuner/util/StatusTextUtils.java b/tuner/src/com/android/tv/tuner/util/StatusTextUtils.java
new file mode 100644
index 00000000..84e2fc5a
--- /dev/null
+++ b/tuner/src/com/android/tv/tuner/util/StatusTextUtils.java
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2015 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.android.tv.tuner.util;
+
+import java.util.Locale;
+
+/** Utility class for tuner status messages. */
+public class StatusTextUtils {
+    private static final int PACKETS_PER_SEC_YELLOW = 1500;
+    private static final int PACKETS_PER_SEC_RED = 1000;
+    private static final int AUDIO_POSITION_MS_RATE_DIFF_YELLOW = 100;
+    private static final int AUDIO_POSITION_MS_RATE_DIFF_RED = 200;
+    private static final String COLOR_RED = "red";
+    private static final String COLOR_YELLOW = "yellow";
+    private static final String COLOR_GREEN = "green";
+    private static final String COLOR_GRAY = "gray";
+
+    private StatusTextUtils() {}
+
+    /**
+     * Returns tuner status warning message in HTML.
+     *
+     * <p>This is only called for debuging and always shown in english.
+     */
+    public static String getStatusWarningInHTML(
+            long packetsPerSec,
+            int videoFrameDrop,
+            int bytesInQueue,
+            long audioPositionUs,
+            long audioPositionUsRate,
+            long audioPtsUs,
+            long audioPtsUsRate,
+            long videoPtsUs,
+            long videoPtsUsRate) {
+        StringBuffer buffer = new StringBuffer();
+
+        // audioPosition should go in rate of 1000ms.
+        long audioPositionMsRate = audioPositionUsRate / 1000;
+        String audioPositionColor;
+        if (Math.abs(audioPositionMsRate - 1000) > AUDIO_POSITION_MS_RATE_DIFF_RED) {
+            audioPositionColor = COLOR_RED;
+        } else if (Math.abs(audioPositionMsRate - 1000) > AUDIO_POSITION_MS_RATE_DIFF_YELLOW) {
+            audioPositionColor = COLOR_YELLOW;
+        } else {
+            audioPositionColor = COLOR_GRAY;
+        }
+        buffer.append(String.format(Locale.US, "<font color=%s>", audioPositionColor));
+        buffer.append(
+                String.format(
+                        Locale.US,
+                        "audioPositionMs: %d (%d)<br>",
+                        audioPositionUs / 1000,
+                        audioPositionMsRate));
+        buffer.append("</font>\n");
+        buffer.append("<font color=" + COLOR_GRAY + ">");
+        buffer.append(
+                String.format(
+                        Locale.US,
+                        "audioPtsMs: %d (%d, %d)<br>",
+                        audioPtsUs / 1000,
+                        audioPtsUsRate / 1000,
+                        (audioPtsUs - audioPositionUs) / 1000));
+        buffer.append(
+                String.format(
+                        Locale.US,
+                        "videoPtsMs: %d (%d, %d)<br>",
+                        videoPtsUs / 1000,
+                        videoPtsUsRate / 1000,
+                        (videoPtsUs - audioPositionUs) / 1000));
+        buffer.append("</font>\n");
+
+        appendStatusLine(buffer, "KbytesInQueue", bytesInQueue / 1000, 1, 10);
+        buffer.append("<br/>");
+        appendErrorStatusLine(buffer, "videoFrameDrop", videoFrameDrop, 0, 2);
+        buffer.append("<br/>");
+        appendStatusLine(
+                buffer,
+                "packetsPerSec",
+                packetsPerSec,
+                PACKETS_PER_SEC_RED,
+                PACKETS_PER_SEC_YELLOW);
+        return buffer.toString();
+    }
+
+    /** Returns audio unavailable warning message in HTML. */
+    public static String getAudioWarningInHTML(String msg) {
+        return String.format("<font color=%s>%s</font>\n", COLOR_YELLOW, msg);
+    }
+
+    private static void appendStatusLine(
+            StringBuffer buffer, String factorName, long value, int minRed, int minYellow) {
+        buffer.append("<font color=");
+        if (value <= minRed) {
+            buffer.append(COLOR_RED);
+        } else if (value <= minYellow) {
+            buffer.append(COLOR_YELLOW);
+        } else {
+            buffer.append(COLOR_GREEN);
+        }
+        buffer.append(">");
+        buffer.append(factorName);
+        buffer.append(" : ");
+        buffer.append(value);
+        buffer.append("</font>");
+    }
+
+    private static void appendErrorStatusLine(
+            StringBuffer buffer, String factorName, int value, int minGreen, int minYellow) {
+        buffer.append("<font color=");
+        if (value <= minGreen) {
+            buffer.append(COLOR_GREEN);
+        } else if (value <= minYellow) {
+            buffer.append(COLOR_YELLOW);
+        } else {
+            buffer.append(COLOR_RED);
+        }
+        buffer.append(">");
+        buffer.append(factorName);
+        buffer.append(" : ");
+        buffer.append(value);
+        buffer.append("</font>");
+    }
+}