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Make Tx3gDecoder fields final, and remove unnecessary null-check

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PiperOrigin-RevId: 340412910
This commit is contained in:
ibaker 2020-11-03 11:36:55 +00:00 committed by Andrew Lewis
parent 57c53c5ac4
commit f937e40eab
1 changed files with 20 additions and 16 deletions
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36
library/core/src/main/java/com/google/android/exoplayer2/text/tx3g/Tx3gDecoder.java
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@ -72,12 +72,12 @@ public final class Tx3gDecoder extends SimpleSubtitleDecoder {
private final ParsableByteArray parsableByteArray;
private boolean customVerticalPlacement;
private int defaultFontFace;
private int defaultColorRgba;
private String defaultFontFamily;
private float defaultVerticalPlacement;
private int calculatedVideoTrackHeight;
private final boolean customVerticalPlacement;
private final int defaultFontFace;
private final int defaultColorRgba;
private final String defaultFontFamily;
private final float defaultVerticalPlacement;
private final int calculatedVideoTrackHeight;
/**
* Sets up a new {@link Tx3gDecoder} with default values.
@ -88,7 +88,7 @@ public final class Tx3gDecoder extends SimpleSubtitleDecoder {
super("Tx3gDecoder");
parsableByteArray = new ParsableByteArray();
if (initializationData != null && initializationData.size() == 1
if (initializationData.size() == 1
&& (initializationData.get(0).length == 48 || initializationData.get(0).length == 53)) {
byte[] initializationBytes = initializationData.get(0);
defaultFontFace = initializationBytes[24];
@ -105,8 +105,9 @@ public final class Tx3gDecoder extends SimpleSubtitleDecoder {
if (customVerticalPlacement) {
int requestedVerticalPlacement = ((initializationBytes[10] & 0xFF) << 8)
| (initializationBytes[11] & 0xFF);
defaultVerticalPlacement = (float) requestedVerticalPlacement / calculatedVideoTrackHeight;
defaultVerticalPlacement = Util.constrainValue(defaultVerticalPlacement, 0.0f, 0.95f);
defaultVerticalPlacement =
Util.constrainValue(
(float) requestedVerticalPlacement / calculatedVideoTrackHeight, 0.0f, 0.95f);
} else {
defaultVerticalPlacement = DEFAULT_VERTICAL_PLACEMENT;
}
@ -116,6 +117,7 @@ public final class Tx3gDecoder extends SimpleSubtitleDecoder {
defaultFontFamily = DEFAULT_FONT_FAMILY;
customVerticalPlacement = false;
defaultVerticalPlacement = DEFAULT_VERTICAL_PLACEMENT;
calculatedVideoTrackHeight = C.LENGTH_UNSET;
}
}
@ -133,8 +135,7 @@ public final class Tx3gDecoder extends SimpleSubtitleDecoder {
SPAN_PRIORITY_LOW);
attachColor(cueText, defaultColorRgba, DEFAULT_COLOR, 0, cueText.length(),
SPAN_PRIORITY_LOW);
attachFontFamily(cueText, defaultFontFamily, DEFAULT_FONT_FAMILY, 0, cueText.length(),
SPAN_PRIORITY_LOW);
attachFontFamily(cueText, defaultFontFamily, 0, cueText.length());
float verticalPlacement = defaultVerticalPlacement;
// Find and attach additional styles.
while (parsableByteArray.bytesLeft() >= SIZE_ATOM_HEADER) {
@ -237,11 +238,14 @@ public final class Tx3gDecoder extends SimpleSubtitleDecoder {
}
@SuppressWarnings("ReferenceEquality")
private static void attachFontFamily(SpannableStringBuilder cueText, String fontFamily,
String defaultFontFamily, int start, int end, int spanPriority) {
if (fontFamily != defaultFontFamily) {
cueText.setSpan(new TypefaceSpan(fontFamily), start, end,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE | spanPriority);
private static void attachFontFamily(
SpannableStringBuilder cueText, String fontFamily, int start, int end) {
if (fontFamily != Tx3gDecoder.DEFAULT_FONT_FAMILY) {
cueText.setSpan(
new TypefaceSpan(fontFamily),
start,
end,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE | Tx3gDecoder.SPAN_PRIORITY_LOW);
}
}