1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
package android.media;
import android.content.Context;
import android.media.SubtitleController.Renderer;
import android.os.Handler;
import android.os.Message;
import android.os.Parcel;
import android.util.Log;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
import java.util.Vector;
/** @hide */
public class SRTRenderer extends Renderer {
private final Context mContext;
private final boolean mRender;
private final Handler mEventHandler;
private WebVttRenderingWidget mRenderingWidget;
public SRTRenderer(Context context) {
this(context, null);
}
SRTRenderer(Context mContext, Handler mEventHandler) {
this.mContext = mContext;
this.mRender = (mEventHandler == null);
this.mEventHandler = mEventHandler;
}
@Override
public boolean supports(MediaFormat format) {
if (format.containsKey(MediaFormat.KEY_MIME)) {
if (!format.getString(MediaFormat.KEY_MIME)
.equals(MediaPlayer.MEDIA_MIMETYPE_TEXT_SUBRIP)) {
return false;
};
return mRender == (format.getInteger(MediaFormat.KEY_IS_TIMED_TEXT, 0) == 0);
}
return false;
}
@Override
public SubtitleTrack createTrack(MediaFormat format) {
if (mRender && mRenderingWidget == null) {
mRenderingWidget = new WebVttRenderingWidget(mContext);
}
if (mRender) {
return new SRTTrack(mRenderingWidget, format);
} else {
return new SRTTrack(mEventHandler, format);
}
}
}
class SRTTrack extends WebVttTrack {
private static final int MEDIA_TIMED_TEXT = 99; // MediaPlayer.MEDIA_TIMED_TEXT
private static final int KEY_STRUCT_TEXT = 16; // TimedText.KEY_STRUCT_TEXT
private static final int KEY_START_TIME = 7; // TimedText.KEY_START_TIME
private static final int KEY_LOCAL_SETTING = 102; // TimedText.KEY_START_TIME
private static final String TAG = "SRTTrack";
private final Handler mEventHandler;
SRTTrack(WebVttRenderingWidget renderingWidget, MediaFormat format) {
super(renderingWidget, format);
mEventHandler = null;
}
SRTTrack(Handler eventHandler, MediaFormat format) {
super(null, format);
mEventHandler = eventHandler;
}
@Override
protected void onData(SubtitleData data) {
try {
TextTrackCue cue = new TextTrackCue();
cue.mStartTimeMs = data.getStartTimeUs() / 1000;
cue.mEndTimeMs = (data.getStartTimeUs() + data.getDurationUs()) / 1000;
String paragraph;
paragraph = new String(data.getData(), "UTF-8");
String[] lines = paragraph.split("\\r?\\n");
cue.mLines = new TextTrackCueSpan[lines.length][];
int i = 0;
for (String line : lines) {
TextTrackCueSpan[] span = new TextTrackCueSpan[] {
new TextTrackCueSpan(line, -1)
};
cue.mLines[i++] = span;
}
addCue(cue);
} catch (UnsupportedEncodingException e) {
Log.w(TAG, "subtitle data is not UTF-8 encoded: " + e);
}
}
@Override
public void onData(byte[] data, boolean eos, long runID) {
// TODO make reentrant
try {
Reader r = new InputStreamReader(new ByteArrayInputStream(data), "UTF-8");
BufferedReader br = new BufferedReader(r);
String header;
while ((header = br.readLine()) != null) {
// discard subtitle number
header = br.readLine();
if (header == null) {
break;
}
TextTrackCue cue = new TextTrackCue();
String[] startEnd = header.split("-->");
cue.mStartTimeMs = parseMs(startEnd[0]);
cue.mEndTimeMs = parseMs(startEnd[1]);
String s;
List<String> paragraph = new ArrayList<String>();
while (!((s = br.readLine()) == null || s.trim().equals(""))) {
paragraph.add(s);
}
int i = 0;
cue.mLines = new TextTrackCueSpan[paragraph.size()][];
cue.mStrings = paragraph.toArray(new String[0]);
for (String line : paragraph) {
TextTrackCueSpan[] span = new TextTrackCueSpan[] {
new TextTrackCueSpan(line, -1)
};
cue.mStrings[i] = line;
cue.mLines[i++] = span;
}
addCue(cue);
}
} catch (UnsupportedEncodingException e) {
Log.w(TAG, "subtitle data is not UTF-8 encoded: " + e);
} catch (IOException ioe) {
// shouldn't happen
Log.e(TAG, ioe.getMessage(), ioe);
}
}
@Override
public void updateView(Vector<Cue> activeCues) {
if (getRenderingWidget() != null) {
super.updateView(activeCues);
return;
}
if (mEventHandler == null) {
return;
}
final int _ = 0;
for (Cue cue : activeCues) {
TextTrackCue ttc = (TextTrackCue) cue;
Parcel parcel = Parcel.obtain();
parcel.writeInt(KEY_LOCAL_SETTING);
parcel.writeInt(KEY_START_TIME);
parcel.writeInt((int) cue.mStartTimeMs);
parcel.writeInt(KEY_STRUCT_TEXT);
StringBuilder sb = new StringBuilder();
for (String line : ttc.mStrings) {
sb.append(line).append('\n');
}
byte[] buf = sb.toString().getBytes();
parcel.writeInt(buf.length);
parcel.writeByteArray(buf);
Message msg = mEventHandler.obtainMessage(MEDIA_TIMED_TEXT, _, _, parcel);
mEventHandler.sendMessage(msg);
}
activeCues.clear();
}
private static long parseMs(String in) {
long hours = Long.parseLong(in.split(":")[0].trim());
long minutes = Long.parseLong(in.split(":")[1].trim());
long seconds = Long.parseLong(in.split(":")[2].split(",")[0].trim());
long millies = Long.parseLong(in.split(":")[2].split(",")[1].trim());
return hours * 60 * 60 * 1000 + minutes * 60 * 1000 + seconds * 1000 + millies;
}
}
|
