Examples with Format com.google.android.exoplayer2.Format used on opensource projects

Example 91 with Format

use of com.google.android.exoplayer2.Format in project ExoPlayer by google.

the class Ac4Reader method parseHeader.

/**
 * Parses the sample header.
 */
@RequiresNonNull("output")
private void parseHeader() {
    headerScratchBits.setPosition(0);
    SyncFrameInfo frameInfo = Ac4Util.parseAc4SyncframeInfo(headerScratchBits);
    if (format == null || frameInfo.channelCount != format.channelCount || frameInfo.sampleRate != format.sampleRate || !MimeTypes.AUDIO_AC4.equals(format.sampleMimeType)) {
        format = new Format.Builder().setId(formatId).setSampleMimeType(MimeTypes.AUDIO_AC4).setChannelCount(frameInfo.channelCount).setSampleRate(frameInfo.sampleRate).setLanguage(language).build();
        output.format(format);
    }
    sampleSize = frameInfo.frameSize;
    // In this class a sample is an AC-4 sync frame, but Format#sampleRate specifies the number of
    // PCM audio samples per second.
    sampleDurationUs = C.MICROS_PER_SECOND * frameInfo.sampleCount / format.sampleRate;
}

Example 92 with Format

use of com.google.android.exoplayer2.Format in project ExoPlayer by google.

the class H263Reader method parseCsdBuffer.

/**
 * Parses a codec-specific data buffer, returning the {@link Format} of the media.
 *
 * @param csdBuffer The buffer to parse.
 * @param volStartPosition The byte offset of the start of the video object layer in the buffer.
 * @param formatId The ID for the generated format.
 * @return The {@link Format} of the media represented in the buffer.
 */
private static Format parseCsdBuffer(CsdBuffer csdBuffer, int volStartPosition, String formatId) {
    byte[] csdData = Arrays.copyOf(csdBuffer.data, csdBuffer.length);
    ParsableBitArray buffer = new ParsableBitArray(csdData);
    buffer.skipBytes(volStartPosition);
    // Parse the video object layer defined in ISO 14496-2 (2001) subsection 6.2.3.
    // video_object_layer_start_code
    buffer.skipBytes(4);
    // random_accessible_vol
    buffer.skipBit();
    // video_object_type_indication
    buffer.skipBits(8);
    if (buffer.readBit()) {
        // is_object_layer_identifier
        // video_object_layer_verid
        buffer.skipBits(4);
        // video_object_layer_priority
        buffer.skipBits(3);
    }
    float pixelWidthHeightRatio;
    int aspectRatioInfo = buffer.readBits(4);
    if (aspectRatioInfo == 0x0F) {
        // extended_PAR
        int parWidth = buffer.readBits(8);
        int parHeight = buffer.readBits(8);
        if (parHeight == 0) {
            Log.w(TAG, "Invalid aspect ratio");
            pixelWidthHeightRatio = 1f;
        } else {
            pixelWidthHeightRatio = (float) parWidth / parHeight;
        }
    } else if (aspectRatioInfo < PIXEL_WIDTH_HEIGHT_RATIO_BY_ASPECT_RATIO_INFO.length) {
        pixelWidthHeightRatio = PIXEL_WIDTH_HEIGHT_RATIO_BY_ASPECT_RATIO_INFO[aspectRatioInfo];
    } else {
        Log.w(TAG, "Invalid aspect ratio");
        pixelWidthHeightRatio = 1f;
    }
    if (buffer.readBit()) {
        // vol_control_parameters
        // chroma_format
        buffer.skipBits(2);
        // low_delay
        buffer.skipBits(1);
        if (buffer.readBit()) {
            // vbv_parameters
            // first_half_bit_rate
            buffer.skipBits(15);
            // marker_bit
            buffer.skipBit();
            // latter_half_bit_rate
            buffer.skipBits(15);
            // marker_bit
            buffer.skipBit();
            // first_half_vbv_buffer_size
            buffer.skipBits(15);
            // marker_bit
            buffer.skipBit();
            // latter_half_vbv_buffer_size
            buffer.skipBits(3);
            // first_half_vbv_occupancy
            buffer.skipBits(11);
            // marker_bit
            buffer.skipBit();
            // latter_half_vbv_occupancy
            buffer.skipBits(15);
            // marker_bit
            buffer.skipBit();
        }
    }
    int videoObjectLayerShape = buffer.readBits(2);
    if (videoObjectLayerShape != VIDEO_OBJECT_LAYER_SHAPE_RECTANGULAR) {
        Log.w(TAG, "Unhandled video object layer shape");
    }
    // marker_bit
    buffer.skipBit();
    int vopTimeIncrementResolution = buffer.readBits(16);
    // marker_bit
    buffer.skipBit();
    if (buffer.readBit()) {
        // fixed_vop_rate
        if (vopTimeIncrementResolution == 0) {
            Log.w(TAG, "Invalid vop_increment_time_resolution");
        } else {
            vopTimeIncrementResolution--;
            int numBits = 0;
            while (vopTimeIncrementResolution > 0) {
                ++numBits;
                vopTimeIncrementResolution >>= 1;
            }
            // fixed_vop_time_increment
            buffer.skipBits(numBits);
        }
    }
    // marker_bit
    buffer.skipBit();
    int videoObjectLayerWidth = buffer.readBits(13);
    // marker_bit
    buffer.skipBit();
    int videoObjectLayerHeight = buffer.readBits(13);
    // marker_bit
    buffer.skipBit();
    // interlaced
    buffer.skipBit();
    return new Format.Builder().setId(formatId).setSampleMimeType(MimeTypes.VIDEO_MP4V).setWidth(videoObjectLayerWidth).setHeight(videoObjectLayerHeight).setPixelWidthHeightRatio(pixelWidthHeightRatio).setInitializationData(Collections.singletonList(csdData)).build();
}

Example 93 with Format

use of com.google.android.exoplayer2.Format in project ExoPlayer by google.

the class SeiReader method createTracks.

public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) {
    for (int i = 0; i < outputs.length; i++) {
        idGenerator.generateNewId();
        TrackOutput output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_TEXT);
        Format channelFormat = closedCaptionFormats.get(i);
        @Nullable String channelMimeType = channelFormat.sampleMimeType;
        Assertions.checkArgument(MimeTypes.APPLICATION_CEA608.equals(channelMimeType) || MimeTypes.APPLICATION_CEA708.equals(channelMimeType), "Invalid closed caption mime type provided: " + channelMimeType);
        String formatId = channelFormat.id != null ? channelFormat.id : idGenerator.getFormatId();
        output.format(new Format.Builder().setId(formatId).setSampleMimeType(channelMimeType).setSelectionFlags(channelFormat.selectionFlags).setLanguage(channelFormat.language).setAccessibilityChannel(channelFormat.accessibilityChannel).setInitializationData(channelFormat.initializationData).build());
        outputs[i] = output;
    }
}

Example 94 with Format

use of com.google.android.exoplayer2.Format in project ExoPlayer by google.

the class WavHeaderReader method readFormat.

/**
 * Reads and returns a {@code WavFormat}.
 *
 * @param input Input stream to read the WAV format from. The position should point to the byte
 *     following the ds64 chunk if present, or to the byte following the WAVE tag otherwise.
 * @throws IOException If reading from the input fails.
 * @return A new {@code WavFormat} read from {@code input}.
 */
public static WavFormat readFormat(ExtractorInput input) throws IOException {
    // Allocate a scratch buffer large enough to store the format chunk.
    ParsableByteArray scratch = new ParsableByteArray(16);
    // Skip chunks until we find the format chunk.
    ChunkHeader chunkHeader = skipToChunk(/* chunkId= */
    WavUtil.FMT_FOURCC, input, scratch);
    Assertions.checkState(chunkHeader.size >= 16);
    input.peekFully(scratch.getData(), 0, 16);
    scratch.setPosition(0);
    int audioFormatType = scratch.readLittleEndianUnsignedShort();
    int numChannels = scratch.readLittleEndianUnsignedShort();
    int frameRateHz = scratch.readLittleEndianUnsignedIntToInt();
    int averageBytesPerSecond = scratch.readLittleEndianUnsignedIntToInt();
    int blockSize = scratch.readLittleEndianUnsignedShort();
    int bitsPerSample = scratch.readLittleEndianUnsignedShort();
    int bytesLeft = (int) chunkHeader.size - 16;
    byte[] extraData;
    if (bytesLeft > 0) {
        extraData = new byte[bytesLeft];
        input.peekFully(extraData, 0, bytesLeft);
    } else {
        extraData = Util.EMPTY_BYTE_ARRAY;
    }
    input.skipFully((int) (input.getPeekPosition() - input.getPosition()));
    return new WavFormat(audioFormatType, numChannels, frameRateHz, averageBytesPerSecond, blockSize, bitsPerSample, extraData);
}

Example 95 with Format

use of com.google.android.exoplayer2.Format in project ExoPlayer by google.

the class RawCcExtractorTest method rawCcSample.

@Test
public void rawCcSample() throws Exception {
    Format format = new Format.Builder().setSampleMimeType(MimeTypes.APPLICATION_CEA608).setCodecs("cea608").setAccessibilityChannel(1).build();
    ExtractorAsserts.assertBehavior(() -> new RawCcExtractor(format), "media/rawcc/sample.rawcc", simulationConfig);
}