本文整理汇总了Java中com.google.android.exoplayer2.extractor.ExtractorInput.getLength方法的典型用法代码示例。如果您正苦于以下问题:Java ExtractorInput.getLength方法的具体用法?Java ExtractorInput.getLength怎么用?Java ExtractorInput.getLength使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类com.google.android.exoplayer2.extractor.ExtractorInput
的用法示例。
在下文中一共展示了ExtractorInput.getLength方法的12个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: read
import com.google.android.exoplayer2.extractor.ExtractorInput; //导入方法依赖的package包/类
@Override
public int read(ExtractorInput input, PositionHolder seekPosition)
throws IOException, InterruptedException {
int currentFileSize = (int) input.getLength();
// Increase the size of sampleData if necessary.
if (sampleSize == sampleData.length) {
sampleData = Arrays.copyOf(sampleData,
(currentFileSize != C.LENGTH_UNSET ? currentFileSize : sampleData.length) * 3 / 2);
}
// Consume to the input.
int bytesRead = input.read(sampleData, sampleSize, sampleData.length - sampleSize);
if (bytesRead != C.RESULT_END_OF_INPUT) {
sampleSize += bytesRead;
if (currentFileSize == C.LENGTH_UNSET || sampleSize != currentFileSize) {
return Extractor.RESULT_CONTINUE;
}
}
// We've reached the end of the input, which corresponds to the end of the current file.
processSample();
return Extractor.RESULT_END_OF_INPUT;
}
示例2: readHeaders
import com.google.android.exoplayer2.extractor.ExtractorInput; //导入方法依赖的package包/类
private int readHeaders(ExtractorInput input) throws IOException, InterruptedException {
boolean readingHeaders = true;
while (readingHeaders) {
if (!oggPacket.populate(input)) {
state = STATE_END_OF_INPUT;
return Extractor.RESULT_END_OF_INPUT;
}
lengthOfReadPacket = input.getPosition() - payloadStartPosition;
readingHeaders = readHeaders(oggPacket.getPayload(), payloadStartPosition, setupData);
if (readingHeaders) {
payloadStartPosition = input.getPosition();
}
}
sampleRate = setupData.format.sampleRate;
if (!formatSet) {
trackOutput.format(setupData.format);
formatSet = true;
}
if (setupData.oggSeeker != null) {
oggSeeker = setupData.oggSeeker;
} else if (input.getLength() == C.LENGTH_UNSET) {
oggSeeker = new UnseekableOggSeeker();
} else {
OggPageHeader firstPayloadPageHeader = oggPacket.getPageHeader();
oggSeeker = new DefaultOggSeeker(payloadStartPosition, input.getLength(), this,
firstPayloadPageHeader.headerSize + firstPayloadPageHeader.bodySize,
firstPayloadPageHeader.granulePosition);
}
setupData = null;
state = STATE_READ_PAYLOAD;
// First payload packet. Trim the payload array of the ogg packet after headers have been read.
oggPacket.trimPayload();
return Extractor.RESULT_CONTINUE;
}
示例3: readHeaders
import com.google.android.exoplayer2.extractor.ExtractorInput; //导入方法依赖的package包/类
private int readHeaders(ExtractorInput input) throws IOException, InterruptedException {
boolean readingHeaders = true;
while (readingHeaders) {
if (!oggPacket.populate(input)) {
state = STATE_END_OF_INPUT;
return Extractor.RESULT_END_OF_INPUT;
}
lengthOfReadPacket = input.getPosition() - payloadStartPosition;
readingHeaders = readHeaders(oggPacket.getPayload(), payloadStartPosition, setupData);
if (readingHeaders) {
payloadStartPosition = input.getPosition();
}
}
sampleRate = setupData.format.sampleRate;
if (!formatSet) {
trackOutput.format(setupData.format);
formatSet = true;
}
if (setupData.oggSeeker != null) {
oggSeeker = setupData.oggSeeker;
} else if (input.getLength() == C.LENGTH_UNSET) {
oggSeeker = new UnseekableOggSeeker();
} else {
OggPageHeader firstPayloadPageHeader = oggPacket.getPageHeader();
oggSeeker = new DefaultOggSeeker(payloadStartPosition, input.getLength(), this,
firstPayloadPageHeader.headerSize + firstPayloadPageHeader.bodySize,
firstPayloadPageHeader.granulePosition);
}
setupData = null;
state = STATE_READ_PAYLOAD;
return Extractor.RESULT_CONTINUE;
}
示例4: readHeaders
import com.google.android.exoplayer2.extractor.ExtractorInput; //导入方法依赖的package包/类
private int readHeaders(ExtractorInput input) throws IOException, InterruptedException {
boolean readingHeaders = true;
while (readingHeaders) {
if (!oggPacket.populate(input)) {
state = STATE_END_OF_INPUT;
return Extractor.RESULT_END_OF_INPUT;
}
lengthOfReadPacket = input.getPosition() - payloadStartPosition;
readingHeaders = readHeaders(oggPacket.getPayload(), payloadStartPosition, setupData);
if (readingHeaders) {
payloadStartPosition = input.getPosition();
}
}
sampleRate = setupData.format.sampleRate;
if (!formatSet) {
trackOutput.format(setupData.format);
formatSet = true;
}
if (setupData.oggSeeker != null) {
oggSeeker = setupData.oggSeeker;
} else if (input.getLength() == C.LENGTH_UNSET) {
oggSeeker = new UnseekableOggSeeker();
} else {
oggSeeker = new DefaultOggSeeker(payloadStartPosition, input.getLength(), this);
}
setupData = null;
state = STATE_READ_PAYLOAD;
return Extractor.RESULT_CONTINUE;
}
示例5: skipToNextPage
import com.google.android.exoplayer2.extractor.ExtractorInput; //导入方法依赖的package包/类
private static void skipToNextPage(ExtractorInput extractorInput)
throws IOException, InterruptedException {
DefaultOggSeeker oggSeeker = new DefaultOggSeeker(0, extractorInput.getLength(),
new FlacReader());
while (true) {
try {
oggSeeker.skipToNextPage(extractorInput);
break;
} catch (FakeExtractorInput.SimulatedIOException e) { /* ignored */ }
}
}
示例6: skipToPageOfGranule
import com.google.android.exoplayer2.extractor.ExtractorInput; //导入方法依赖的package包/类
private void skipToPageOfGranule(ExtractorInput input, long granule,
long elapsedSamplesExpected) throws IOException, InterruptedException {
DefaultOggSeeker oggSeeker = new DefaultOggSeeker(0, input.getLength(), new FlacReader());
while (true) {
try {
assertEquals(elapsedSamplesExpected, oggSeeker.skipToPageOfGranule(input, granule, -1));
return;
} catch (FakeExtractorInput.SimulatedIOException e) {
input.resetPeekPosition();
}
}
}
示例7: populate
import com.google.android.exoplayer2.extractor.ExtractorInput; //导入方法依赖的package包/类
/**
* Peeks an Ogg page header and updates this {@link OggPageHeader}.
*
* @param input the {@link ExtractorInput} to read from.
* @param quiet if {@code true} no Exceptions are thrown but {@code false} is return if something
* goes wrong.
* @return {@code true} if the read was successful. {@code false} if the end of the input was
* encountered having read no data.
* @throws IOException thrown if reading data fails or the stream is invalid.
* @throws InterruptedException thrown if thread is interrupted when reading/peeking.
*/
public boolean populate(ExtractorInput input, boolean quiet)
throws IOException, InterruptedException {
scratch.reset();
reset();
boolean hasEnoughBytes = input.getLength() == C.LENGTH_UNSET
|| input.getLength() - input.getPeekPosition() >= EMPTY_PAGE_HEADER_SIZE;
if (!hasEnoughBytes || !input.peekFully(scratch.data, 0, EMPTY_PAGE_HEADER_SIZE, true)) {
if (quiet) {
return false;
} else {
throw new EOFException();
}
}
if (scratch.readUnsignedInt() != TYPE_OGGS) {
if (quiet) {
return false;
} else {
throw new ParserException("expected OggS capture pattern at begin of page");
}
}
revision = scratch.readUnsignedByte();
if (revision != 0x00) {
if (quiet) {
return false;
} else {
throw new ParserException("unsupported bit stream revision");
}
}
type = scratch.readUnsignedByte();
granulePosition = scratch.readLittleEndianLong();
streamSerialNumber = scratch.readLittleEndianUnsignedInt();
pageSequenceNumber = scratch.readLittleEndianUnsignedInt();
pageChecksum = scratch.readLittleEndianUnsignedInt();
pageSegmentCount = scratch.readUnsignedByte();
headerSize = EMPTY_PAGE_HEADER_SIZE + pageSegmentCount;
// calculate total size of header including laces
scratch.reset();
input.peekFully(scratch.data, 0, pageSegmentCount);
for (int i = 0; i < pageSegmentCount; i++) {
laces[i] = scratch.readUnsignedByte();
bodySize += laces[i];
}
return true;
}
示例8: sniffInternal
import com.google.android.exoplayer2.extractor.ExtractorInput; //导入方法依赖的package包/类
private static boolean sniffInternal(ExtractorInput input, boolean fragmented)
throws IOException, InterruptedException {
long inputLength = input.getLength();
int bytesToSearch = (int) (inputLength == C.LENGTH_UNSET || inputLength > SEARCH_LENGTH
? SEARCH_LENGTH : inputLength);
ParsableByteArray buffer = new ParsableByteArray(64);
int bytesSearched = 0;
boolean foundGoodFileType = false;
boolean isFragmented = false;
while (bytesSearched < bytesToSearch) {
// Read an atom header.
int headerSize = Atom.HEADER_SIZE;
buffer.reset(headerSize);
input.peekFully(buffer.data, 0, headerSize);
long atomSize = buffer.readUnsignedInt();
int atomType = buffer.readInt();
if (atomSize == Atom.LONG_SIZE_PREFIX) {
headerSize = Atom.LONG_HEADER_SIZE;
input.peekFully(buffer.data, Atom.HEADER_SIZE, Atom.LONG_HEADER_SIZE - Atom.HEADER_SIZE);
buffer.setLimit(Atom.LONG_HEADER_SIZE);
atomSize = buffer.readUnsignedLongToLong();
}
if (atomSize < headerSize) {
// The file is invalid because the atom size is too small for its header.
return false;
}
bytesSearched += headerSize;
if (atomType == Atom.TYPE_moov) {
// Check for an mvex atom inside the moov atom to identify whether the file is fragmented.
continue;
}
if (atomType == Atom.TYPE_moof || atomType == Atom.TYPE_mvex) {
// The movie is fragmented. Stop searching as we must have read any ftyp atom already.
isFragmented = true;
break;
}
if (bytesSearched + atomSize - headerSize >= bytesToSearch) {
// Stop searching as peeking this atom would exceed the search limit.
break;
}
int atomDataSize = (int) (atomSize - headerSize);
bytesSearched += atomDataSize;
if (atomType == Atom.TYPE_ftyp) {
// Parse the atom and check the file type/brand is compatible with the extractors.
if (atomDataSize < 8) {
return false;
}
buffer.reset(atomDataSize);
input.peekFully(buffer.data, 0, atomDataSize);
int brandsCount = atomDataSize / 4;
for (int i = 0; i < brandsCount; i++) {
if (i == 1) {
// This index refers to the minorVersion, not a brand, so skip it.
buffer.skipBytes(4);
} else if (isCompatibleBrand(buffer.readInt())) {
foundGoodFileType = true;
break;
}
}
if (!foundGoodFileType) {
// The types were not compatible and there is only one ftyp atom, so reject the file.
return false;
}
} else if (atomDataSize != 0) {
// Skip the atom.
input.advancePeekPosition(atomDataSize);
}
}
return foundGoodFileType && fragmented == isFragmented;
}
示例9: sniff
import com.google.android.exoplayer2.extractor.ExtractorInput; //导入方法依赖的package包/类
/**
* @see com.google.android.exoplayer2.extractor.Extractor#sniff(ExtractorInput)
*/
public boolean sniff(ExtractorInput input) throws IOException, InterruptedException {
long inputLength = input.getLength();
int bytesToSearch = (int) (inputLength == C.LENGTH_UNSET || inputLength > SEARCH_LENGTH
? SEARCH_LENGTH : inputLength);
// Find four bytes equal to ID_EBML near the start of the input.
input.peekFully(scratch.data, 0, 4);
long tag = scratch.readUnsignedInt();
peekLength = 4;
while (tag != ID_EBML) {
if (++peekLength == bytesToSearch) {
return false;
}
input.peekFully(scratch.data, 0, 1);
tag = (tag << 8) & 0xFFFFFF00;
tag |= scratch.data[0] & 0xFF;
}
// Read the size of the EBML header and make sure it is within the stream.
long headerSize = readUint(input);
long headerStart = peekLength;
if (headerSize == Long.MIN_VALUE
|| (inputLength != C.LENGTH_UNSET && headerStart + headerSize >= inputLength)) {
return false;
}
// Read the payload elements in the EBML header.
while (peekLength < headerStart + headerSize) {
long id = readUint(input);
if (id == Long.MIN_VALUE) {
return false;
}
long size = readUint(input);
if (size < 0 || size > Integer.MAX_VALUE) {
return false;
}
if (size != 0) {
input.advancePeekPosition((int) size);
peekLength += size;
}
}
return peekLength == headerStart + headerSize;
}
示例10: setupSeeker
import com.google.android.exoplayer2.extractor.ExtractorInput; //导入方法依赖的package包/类
/**
* Returns a {@link Seeker} to seek using metadata read from {@code input}, which should provide
* data from the start of the first frame in the stream. On returning, the input's position will
* be set to the start of the first frame of audio.
*
* @param input The {@link ExtractorInput} from which to read.
* @throws IOException Thrown if there was an error reading from the stream. Not expected if the
* next two frames were already peeked during synchronization.
* @throws InterruptedException Thrown if reading from the stream was interrupted. Not expected if
* the next two frames were already peeked during synchronization.
* @return a {@link Seeker}.
*/
private Seeker setupSeeker(ExtractorInput input) throws IOException, InterruptedException {
// Read the first frame which may contain a Xing or VBRI header with seeking metadata.
ParsableByteArray frame = new ParsableByteArray(synchronizedHeader.frameSize);
input.peekFully(frame.data, 0, synchronizedHeader.frameSize);
long position = input.getPosition();
long length = input.getLength();
int headerData = 0;
Seeker seeker = null;
// Check if there is a Xing header.
int xingBase = (synchronizedHeader.version & 1) != 0
? (synchronizedHeader.channels != 1 ? 36 : 21) // MPEG 1
: (synchronizedHeader.channels != 1 ? 21 : 13); // MPEG 2 or 2.5
if (frame.limit() >= xingBase + 4) {
frame.setPosition(xingBase);
headerData = frame.readInt();
}
if (headerData == XING_HEADER || headerData == INFO_HEADER) {
seeker = XingSeeker.create(synchronizedHeader, frame, position, length);
if (seeker != null && !gaplessInfoHolder.hasGaplessInfo()) {
// If there is a Xing header, read gapless playback metadata at a fixed offset.
input.resetPeekPosition();
input.advancePeekPosition(xingBase + 141);
input.peekFully(scratch.data, 0, 3);
scratch.setPosition(0);
gaplessInfoHolder.setFromXingHeaderValue(scratch.readUnsignedInt24());
}
input.skipFully(synchronizedHeader.frameSize);
} else if (frame.limit() >= 40) {
// Check if there is a VBRI header.
frame.setPosition(36); // MPEG audio header (4 bytes) + 32 bytes.
headerData = frame.readInt();
if (headerData == VBRI_HEADER) {
seeker = VbriSeeker.create(synchronizedHeader, frame, position, length);
input.skipFully(synchronizedHeader.frameSize);
}
}
if (seeker == null || (!seeker.isSeekable()
&& (flags & FLAG_ENABLE_CONSTANT_BITRATE_SEEKING) != 0)) {
// Repopulate the synchronized header in case we had to skip an invalid seeking header, which
// would give an invalid CBR bitrate.
input.resetPeekPosition();
input.peekFully(scratch.data, 0, 4);
scratch.setPosition(0);
MpegAudioHeader.populateHeader(scratch.readInt(), synchronizedHeader);
seeker = new ConstantBitrateSeeker(input.getPosition(), synchronizedHeader.bitrate, length);
}
return seeker;
}
示例11: sniff
import com.google.android.exoplayer2.extractor.ExtractorInput; //导入方法依赖的package包/类
/**
* @see Extractor#sniff
*/
public boolean sniff(ExtractorInput input) throws IOException, InterruptedException {
long inputLength = input.getLength();
int bytesToSearch = (int) (inputLength == C.LENGTH_UNSET || inputLength > SEARCH_LENGTH
? SEARCH_LENGTH : inputLength);
// Find four bytes equal to ID_EBML near the start of the input.
input.peekFully(scratch.data, 0, 4);
long tag = scratch.readUnsignedInt();
peekLength = 4;
while (tag != ID_EBML) {
if (++peekLength == bytesToSearch) {
return false;
}
input.peekFully(scratch.data, 0, 1);
tag = (tag << 8) & 0xFFFFFF00;
tag |= scratch.data[0] & 0xFF;
}
// Read the size of the EBML header and make sure it is within the stream.
long headerSize = readUint(input);
long headerStart = peekLength;
if (headerSize == Long.MIN_VALUE
|| (inputLength != C.LENGTH_UNSET && headerStart + headerSize >= inputLength)) {
return false;
}
// Read the payload elements in the EBML header.
while (peekLength < headerStart + headerSize) {
long id = readUint(input);
if (id == Long.MIN_VALUE) {
return false;
}
long size = readUint(input);
if (size < 0 || size > Integer.MAX_VALUE) {
return false;
}
if (size != 0) {
input.advancePeekPosition((int) size);
peekLength += size;
}
}
return peekLength == headerStart + headerSize;
}
示例12: setupSeeker
import com.google.android.exoplayer2.extractor.ExtractorInput; //导入方法依赖的package包/类
/**
* Returns a {@link Seeker} to seek using metadata read from {@code input}, which should provide
* data from the start of the first frame in the stream. On returning, the input's position will
* be set to the start of the first frame of audio.
*
* @param input The {@link ExtractorInput} from which to read.
* @throws IOException Thrown if there was an error reading from the stream. Not expected if the
* next two frames were already peeked during synchronization.
* @throws InterruptedException Thrown if reading from the stream was interrupted. Not expected if
* the next two frames were already peeked during synchronization.
* @return a {@link Seeker}.
*/
private Seeker setupSeeker(ExtractorInput input) throws IOException, InterruptedException {
// Read the first frame which may contain a Xing or VBRI header with seeking metadata.
ParsableByteArray frame = new ParsableByteArray(synchronizedHeader.frameSize);
input.peekFully(frame.data, 0, synchronizedHeader.frameSize);
long position = input.getPosition();
long length = input.getLength();
int headerData = 0;
Seeker seeker = null;
// Check if there is a Xing header.
int xingBase = (synchronizedHeader.version & 1) != 0
? (synchronizedHeader.channels != 1 ? 36 : 21) // MPEG 1
: (synchronizedHeader.channels != 1 ? 21 : 13); // MPEG 2 or 2.5
if (frame.limit() >= xingBase + 4) {
frame.setPosition(xingBase);
headerData = frame.readInt();
}
if (headerData == XING_HEADER || headerData == INFO_HEADER) {
seeker = XingSeeker.create(synchronizedHeader, frame, position, length);
if (seeker != null && !gaplessInfoHolder.hasGaplessInfo()) {
// If there is a Xing header, read gapless playback metadata at a fixed offset.
input.resetPeekPosition();
input.advancePeekPosition(xingBase + 141);
input.peekFully(scratch.data, 0, 3);
scratch.setPosition(0);
gaplessInfoHolder.setFromXingHeaderValue(scratch.readUnsignedInt24());
}
input.skipFully(synchronizedHeader.frameSize);
} else if (frame.limit() >= 40) {
// Check if there is a VBRI header.
frame.setPosition(36); // MPEG audio header (4 bytes) + 32 bytes.
headerData = frame.readInt();
if (headerData == VBRI_HEADER) {
seeker = VbriSeeker.create(synchronizedHeader, frame, position, length);
input.skipFully(synchronizedHeader.frameSize);
}
}
if (seeker == null) {
// Repopulate the synchronized header in case we had to skip an invalid seeking header, which
// would give an invalid CBR bitrate.
input.resetPeekPosition();
input.peekFully(scratch.data, 0, 4);
scratch.setPosition(0);
MpegAudioHeader.populateHeader(scratch.readInt(), synchronizedHeader);
seeker = new ConstantBitrateSeeker(input.getPosition(), synchronizedHeader.bitrate, length);
}
return seeker;
}