Examples with Cue androidx.media3.common.text.Cue used on opensource projects

Example 6 with Cue

use of androidx.media3.common.text.Cue in project media by androidx.

the class SubtitleExtractor method decode.

/**
 * Decodes the subtitle data and stores the samples in the memory of the extractor.
 */
private void decode() throws IOException {
    try {
        @Nullable SubtitleInputBuffer inputBuffer = subtitleDecoder.dequeueInputBuffer();
        while (inputBuffer == null) {
            Thread.sleep(5);
            inputBuffer = subtitleDecoder.dequeueInputBuffer();
        }
        inputBuffer.ensureSpaceForWrite(bytesRead);
        inputBuffer.data.put(subtitleData.getData(), /* offset= */
        0, bytesRead);
        inputBuffer.data.limit(bytesRead);
        subtitleDecoder.queueInputBuffer(inputBuffer);
        @Nullable SubtitleOutputBuffer outputBuffer = subtitleDecoder.dequeueOutputBuffer();
        while (outputBuffer == null) {
            Thread.sleep(5);
            outputBuffer = subtitleDecoder.dequeueOutputBuffer();
        }
        for (int i = 0; i < outputBuffer.getEventTimeCount(); i++) {
            List<Cue> cues = outputBuffer.getCues(outputBuffer.getEventTime(i));
            byte[] cuesSample = cueEncoder.encode(cues);
            timestamps.add(outputBuffer.getEventTime(i));
            samples.add(new ParsableByteArray(cuesSample));
        }
        outputBuffer.release();
    } catch (InterruptedException e) {
        Thread.currentThread().interrupt();
        throw new InterruptedIOException();
    } catch (SubtitleDecoderException e) {
        throw ParserException.createForMalformedContainer("SubtitleDecoder failed.", e);
    }
}

Example 7 with Cue

use of androidx.media3.common.text.Cue in project media by androidx.

the class Cea608Decoder method getDisplayCues.

private List<Cue> getDisplayCues() {
    // CEA-608 does not define middle and end alignment, however content providers artificially
    // introduce them using whitespace. When each cue is built, we try and infer the alignment based
    // on the amount of whitespace either side of the text. To avoid consecutive cues being aligned
    // differently, we force all cues to have the same alignment, with start alignment given
    // preference, then middle alignment, then end alignment.
    @Cue.AnchorType int positionAnchor = Cue.ANCHOR_TYPE_END;
    int cueBuilderCount = cueBuilders.size();
    List<@NullableType Cue> cueBuilderCues = new ArrayList<>(cueBuilderCount);
    for (int i = 0; i < cueBuilderCount; i++) {
        @Nullable Cue cue = cueBuilders.get(i).build(/* forcedPositionAnchor= */
        Cue.TYPE_UNSET);
        cueBuilderCues.add(cue);
        if (cue != null) {
            positionAnchor = min(positionAnchor, cue.positionAnchor);
        }
    }
    // Skip null cues and rebuild any that don't have the preferred alignment.
    List<Cue> displayCues = new ArrayList<>(cueBuilderCount);
    for (int i = 0; i < cueBuilderCount; i++) {
        @Nullable Cue cue = cueBuilderCues.get(i);
        if (cue != null) {
            if (cue.positionAnchor != positionAnchor) {
                // The last time we built this cue it was non-null, it will be non-null this time too.
                cue = Assertions.checkNotNull(cueBuilders.get(i).build(positionAnchor));
            }
            displayCues.add(cue);
        }
    }
    return displayCues;
}

Example 8 with Cue

use of androidx.media3.common.text.Cue in project media by androidx.

the class PgsDecoder method readNextSection.

@Nullable
private static Cue readNextSection(ParsableByteArray buffer, CueBuilder cueBuilder) {
    int limit = buffer.limit();
    int sectionType = buffer.readUnsignedByte();
    int sectionLength = buffer.readUnsignedShort();
    int nextSectionPosition = buffer.getPosition() + sectionLength;
    if (nextSectionPosition > limit) {
        buffer.setPosition(limit);
        return null;
    }
    Cue cue = null;
    switch(sectionType) {
        case SECTION_TYPE_PALETTE:
            cueBuilder.parsePaletteSection(buffer, sectionLength);
            break;
        case SECTION_TYPE_BITMAP_PICTURE:
            cueBuilder.parseBitmapSection(buffer, sectionLength);
            break;
        case SECTION_TYPE_IDENTIFIER:
            cueBuilder.parseIdentifierSection(buffer, sectionLength);
            break;
        case SECTION_TYPE_END:
            cue = cueBuilder.build();
            cueBuilder.reset();
            break;
        default:
            break;
    }
    buffer.setPosition(nextSectionPosition);
    return cue;
}

Example 9 with Cue

use of androidx.media3.common.text.Cue in project media by androidx.

the class SsaDecoder method decode.

@Override
protected Subtitle decode(byte[] bytes, int length, boolean reset) {
    List<List<Cue>> cues = new ArrayList<>();
    List<Long> cueTimesUs = new ArrayList<>();
    ParsableByteArray data = new ParsableByteArray(bytes, length);
    if (!haveInitializationData) {
        parseHeader(data);
    }
    parseEventBody(data, cues, cueTimesUs);
    return new SsaSubtitle(cues, cueTimesUs);
}

Example 10 with Cue

use of androidx.media3.common.text.Cue in project media by androidx.

the class SsaDecoder method createCue.

private static Cue createCue(String text, @Nullable SsaStyle style, SsaStyle.Overrides styleOverrides, float screenWidth, float screenHeight) {
    SpannableString spannableText = new SpannableString(text);
    Cue.Builder cue = new Cue.Builder().setText(spannableText);
    if (style != null) {
        if (style.primaryColor != null) {
            spannableText.setSpan(new ForegroundColorSpan(style.primaryColor), /* start= */
            0, /* end= */
            spannableText.length(), SpannableString.SPAN_EXCLUSIVE_EXCLUSIVE);
        }
        if (style.fontSize != Cue.DIMEN_UNSET && screenHeight != Cue.DIMEN_UNSET) {
            cue.setTextSize(style.fontSize / screenHeight, Cue.TEXT_SIZE_TYPE_FRACTIONAL_IGNORE_PADDING);
        }
        if (style.bold && style.italic) {
            spannableText.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), /* start= */
            0, /* end= */
            spannableText.length(), SpannableString.SPAN_EXCLUSIVE_EXCLUSIVE);
        } else if (style.bold) {
            spannableText.setSpan(new StyleSpan(Typeface.BOLD), /* start= */
            0, /* end= */
            spannableText.length(), SpannableString.SPAN_EXCLUSIVE_EXCLUSIVE);
        } else if (style.italic) {
            spannableText.setSpan(new StyleSpan(Typeface.ITALIC), /* start= */
            0, /* end= */
            spannableText.length(), SpannableString.SPAN_EXCLUSIVE_EXCLUSIVE);
        }
        if (style.underline) {
            spannableText.setSpan(new UnderlineSpan(), /* start= */
            0, /* end= */
            spannableText.length(), SpannableString.SPAN_EXCLUSIVE_EXCLUSIVE);
        }
        if (style.strikeout) {
            spannableText.setSpan(new StrikethroughSpan(), /* start= */
            0, /* end= */
            spannableText.length(), SpannableString.SPAN_EXCLUSIVE_EXCLUSIVE);
        }
    }
    @SsaStyle.SsaAlignment int alignment;
    if (styleOverrides.alignment != SsaStyle.SSA_ALIGNMENT_UNKNOWN) {
        alignment = styleOverrides.alignment;
    } else if (style != null) {
        alignment = style.alignment;
    } else {
        alignment = SsaStyle.SSA_ALIGNMENT_UNKNOWN;
    }
    cue.setTextAlignment(toTextAlignment(alignment)).setPositionAnchor(toPositionAnchor(alignment)).setLineAnchor(toLineAnchor(alignment));
    if (styleOverrides.position != null && screenHeight != Cue.DIMEN_UNSET && screenWidth != Cue.DIMEN_UNSET) {
        cue.setPosition(styleOverrides.position.x / screenWidth);
        cue.setLine(styleOverrides.position.y / screenHeight, LINE_TYPE_FRACTION);
    } else {
        // TODO: Read the MarginL, MarginR and MarginV values from the Style & Dialogue lines.
        cue.setPosition(computeDefaultLineOrPosition(cue.getPositionAnchor()));
        cue.setLine(computeDefaultLineOrPosition(cue.getLineAnchor()), LINE_TYPE_FRACTION);
    }
    return cue.build();
}