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
|
package com.android.tv.tuner.exoplayer;
import android.content.Context;
import android.media.MediaCodec;
import android.os.Handler;
import android.util.Log;
import com.google.android.exoplayer.DecoderInfo;
import com.google.android.exoplayer.ExoPlaybackException;
import com.google.android.exoplayer.MediaCodecSelector;
import com.google.android.exoplayer.MediaCodecUtil;
import com.google.android.exoplayer.MediaCodecVideoTrackRenderer;
import com.google.android.exoplayer.MediaFormatHolder;
import com.google.android.exoplayer.MediaSoftwareCodecUtil;
import com.google.android.exoplayer.SampleSource;
import com.android.tv.common.feature.CommonFeatures;
import java.lang.reflect.Field;
/**
* MPEG-2 TS video track renderer
*/
public class MpegTsVideoTrackRenderer extends MediaCodecVideoTrackRenderer {
private static final String TAG = "MpegTsVideoTrackRender";
private static final int VIDEO_PLAYBACK_DEADLINE_IN_MS = 5000;
// If DROPPED_FRAMES_NOTIFICATION_THRESHOLD frames are consecutively dropped, it'll be notified.
private static final int DROPPED_FRAMES_NOTIFICATION_THRESHOLD = 10;
private static final int MIN_HD_HEIGHT = 720;
private static final String MIMETYPE_MPEG2 = "video/mpeg2";
private static Field sRenderedFirstFrameField;
private final boolean mIsSwCodecEnabled;
private boolean mCodecIsSwPreferred;
private boolean mSetRenderedFirstFrame;
static {
// Remove the reflection below once b/31223646 is resolved.
try {
sRenderedFirstFrameField = MediaCodecVideoTrackRenderer.class.getDeclaredField(
"renderedFirstFrame");
sRenderedFirstFrameField.setAccessible(true);
} catch (NoSuchFieldException e) {
// Null-checking for {@code sRenderedFirstFrameField} will do the error handling.
}
}
public MpegTsVideoTrackRenderer(Context context, SampleSource source, Handler handler,
MediaCodecVideoTrackRenderer.EventListener listener) {
super(context, source, MediaCodecSelector.DEFAULT,
MediaCodec.VIDEO_SCALING_MODE_SCALE_TO_FIT, VIDEO_PLAYBACK_DEADLINE_IN_MS, handler,
listener, DROPPED_FRAMES_NOTIFICATION_THRESHOLD);
mIsSwCodecEnabled = CommonFeatures.USE_SW_CODEC_FOR_SD.isEnabled(context);
}
@Override
protected DecoderInfo getDecoderInfo(MediaCodecSelector codecSelector, String mimeType,
boolean requiresSecureDecoder) throws MediaCodecUtil.DecoderQueryException {
try {
if (mIsSwCodecEnabled && mCodecIsSwPreferred) {
DecoderInfo swCodec = MediaSoftwareCodecUtil.getSoftwareDecoderInfo(
mimeType, requiresSecureDecoder);
if (swCodec != null) {
return swCodec;
}
}
} catch (MediaSoftwareCodecUtil.DecoderQueryException e) {
}
return super.getDecoderInfo(codecSelector, mimeType,requiresSecureDecoder);
}
@Override
protected void onInputFormatChanged(MediaFormatHolder holder) throws ExoPlaybackException {
mCodecIsSwPreferred = MIMETYPE_MPEG2.equalsIgnoreCase(holder.format.mimeType)
&& holder.format.height < MIN_HD_HEIGHT;
super.onInputFormatChanged(holder);
}
@Override
protected void onDiscontinuity(long positionUs) throws ExoPlaybackException {
super.onDiscontinuity(positionUs);
// Disabling pre-rendering of the first frame in order to avoid a frozen picture when
// starting the playback. We do this only once, when the renderer is enabled at first, since
// we need to pre-render the frame in advance when we do trickplay backed by seeking.
if (!mSetRenderedFirstFrame) {
setRenderedFirstFrame(true);
mSetRenderedFirstFrame = true;
}
}
private void setRenderedFirstFrame(boolean renderedFirstFrame) {
if (sRenderedFirstFrameField != null) {
try {
sRenderedFirstFrameField.setBoolean(this, renderedFirstFrame);
} catch (IllegalAccessException e) {
Log.w(TAG, "renderedFirstFrame is not accessible. Playback may start with a frozen"
+" picture.");
}
}
}
}
|
