Java Code Examples for com.google.android.exoplayer2.util.ParsableByteArray#setLimit()
The following examples show how to use
com.google.android.exoplayer2.util.ParsableByteArray#setLimit() .
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Example 1
| Source File: ProjectionDecoder.java From Telegram-FOSS with GNU General Public License v2.0 | 6 votes |
|
private static @Nullable ArrayList<Mesh> parseProj(ParsableByteArray input) {
input.skipBytes(8); // size and type.
int position = input.getPosition();
int limit = input.limit();
while (position < limit) {
int childEnd = position + input.readInt();
if (childEnd <= position || childEnd > limit) {
return null;
}
int childAtomType = input.readInt();
// Some early files named the atom ytmp rather than mshp.
if (childAtomType == TYPE_YTMP || childAtomType == TYPE_MSHP) {
input.setLimit(childEnd);
return parseMshp(input);
}
position = childEnd;
input.setPosition(position);
}
return null;
}
Example 2
| Source File: ProjectionDecoder.java From Telegram with GNU General Public License v2.0 | 6 votes |
|
private static @Nullable ArrayList<Mesh> parseProj(ParsableByteArray input) {
input.skipBytes(8); // size and type.
int position = input.getPosition();
int limit = input.limit();
while (position < limit) {
int childEnd = position + input.readInt();
if (childEnd <= position || childEnd > limit) {
return null;
}
int childAtomType = input.readInt();
// Some early files named the atom ytmp rather than mshp.
if (childAtomType == TYPE_YTMP || childAtomType == TYPE_MSHP) {
input.setLimit(childEnd);
return parseMshp(input);
}
position = childEnd;
input.setPosition(position);
}
return null;
}
Example 3
| Source File: VorbisReader.java From MediaSDK with Apache License 2.0 | 5 votes |
|
@VisibleForTesting
/* package */ static void appendNumberOfSamples(
ParsableByteArray buffer, long packetSampleCount) {
buffer.setLimit(buffer.limit() + 4);
// The vorbis decoder expects the number of samples in the packet
// to be appended to the audio data as an int32
buffer.data[buffer.limit() - 4] = (byte) (packetSampleCount & 0xFF);
buffer.data[buffer.limit() - 3] = (byte) ((packetSampleCount >>> 8) & 0xFF);
buffer.data[buffer.limit() - 2] = (byte) ((packetSampleCount >>> 16) & 0xFF);
buffer.data[buffer.limit() - 1] = (byte) ((packetSampleCount >>> 24) & 0xFF);
}
Example 4
| Source File: Id3Decoder.java From MediaSDK with Apache License 2.0 | 5 votes |
|
/**
* Decodes ID3 tags.
*
* @param data The bytes to decode ID3 tags from.
* @param size Amount of bytes in {@code data} to read.
* @return A {@link Metadata} object containing the decoded ID3 tags, or null if the data could
* not be decoded.
*/
@Nullable
public Metadata decode(byte[] data, int size) {
List<Id3Frame> id3Frames = new ArrayList<>();
ParsableByteArray id3Data = new ParsableByteArray(data, size);
Id3Header id3Header = decodeHeader(id3Data);
if (id3Header == null) {
return null;
}
int startPosition = id3Data.getPosition();
int frameHeaderSize = id3Header.majorVersion == 2 ? 6 : 10;
int framesSize = id3Header.framesSize;
if (id3Header.isUnsynchronized) {
framesSize = removeUnsynchronization(id3Data, id3Header.framesSize);
}
id3Data.setLimit(startPosition + framesSize);
boolean unsignedIntFrameSizeHack = false;
if (!validateFrames(id3Data, id3Header.majorVersion, frameHeaderSize, false)) {
if (id3Header.majorVersion == 4 && validateFrames(id3Data, 4, frameHeaderSize, true)) {
unsignedIntFrameSizeHack = true;
} else {
Log.w(TAG, "Failed to validate ID3 tag with majorVersion=" + id3Header.majorVersion);
return null;
}
}
while (id3Data.bytesLeft() >= frameHeaderSize) {
Id3Frame frame = decodeFrame(id3Header.majorVersion, id3Data, unsignedIntFrameSizeHack,
frameHeaderSize, framePredicate);
if (frame != null) {
id3Frames.add(frame);
}
}
return new Metadata(id3Frames);
}
Example 5
| Source File: VorbisReader.java From Telegram-FOSS with GNU General Public License v2.0 | 5 votes |
|
@VisibleForTesting
/* package */ static void appendNumberOfSamples(
ParsableByteArray buffer, long packetSampleCount) {
buffer.setLimit(buffer.limit() + 4);
// The vorbis decoder expects the number of samples in the packet
// to be appended to the audio data as an int32
buffer.data[buffer.limit() - 4] = (byte) (packetSampleCount & 0xFF);
buffer.data[buffer.limit() - 3] = (byte) ((packetSampleCount >>> 8) & 0xFF);
buffer.data[buffer.limit() - 2] = (byte) ((packetSampleCount >>> 16) & 0xFF);
buffer.data[buffer.limit() - 1] = (byte) ((packetSampleCount >>> 24) & 0xFF);
}
Example 6
| Source File: VorbisReader.java From TelePlus-Android with GNU General Public License v2.0 | 5 votes |
|
static void appendNumberOfSamples(ParsableByteArray buffer,
long packetSampleCount) {
buffer.setLimit(buffer.limit() + 4);
// The vorbis decoder expects the number of samples in the packet
// to be appended to the audio data as an int32
buffer.data[buffer.limit() - 4] = (byte) ((packetSampleCount) & 0xFF);
buffer.data[buffer.limit() - 3] = (byte) ((packetSampleCount >>> 8) & 0xFF);
buffer.data[buffer.limit() - 2] = (byte) ((packetSampleCount >>> 16) & 0xFF);
buffer.data[buffer.limit() - 1] = (byte) ((packetSampleCount >>> 24) & 0xFF);
}
Example 7
| Source File: Id3Decoder.java From TelePlus-Android with GNU General Public License v2.0 | 5 votes |
|
/**
* Decodes ID3 tags.
*
* @param data The bytes to decode ID3 tags from.
* @param size Amount of bytes in {@code data} to read.
* @return A {@link Metadata} object containing the decoded ID3 tags, or null if the data could
* not be decoded.
*/
public @Nullable Metadata decode(byte[] data, int size) {
List<Id3Frame> id3Frames = new ArrayList<>();
ParsableByteArray id3Data = new ParsableByteArray(data, size);
Id3Header id3Header = decodeHeader(id3Data);
if (id3Header == null) {
return null;
}
int startPosition = id3Data.getPosition();
int frameHeaderSize = id3Header.majorVersion == 2 ? 6 : 10;
int framesSize = id3Header.framesSize;
if (id3Header.isUnsynchronized) {
framesSize = removeUnsynchronization(id3Data, id3Header.framesSize);
}
id3Data.setLimit(startPosition + framesSize);
boolean unsignedIntFrameSizeHack = false;
if (!validateFrames(id3Data, id3Header.majorVersion, frameHeaderSize, false)) {
if (id3Header.majorVersion == 4 && validateFrames(id3Data, 4, frameHeaderSize, true)) {
unsignedIntFrameSizeHack = true;
} else {
Log.w(TAG, "Failed to validate ID3 tag with majorVersion=" + id3Header.majorVersion);
return null;
}
}
while (id3Data.bytesLeft() >= frameHeaderSize) {
Id3Frame frame = decodeFrame(id3Header.majorVersion, id3Data, unsignedIntFrameSizeHack,
frameHeaderSize, framePredicate);
if (frame != null) {
id3Frames.add(frame);
}
}
return new Metadata(id3Frames);
}
Example 8
| Source File: Id3Decoder.java From Telegram-FOSS with GNU General Public License v2.0 | 5 votes |
|
/**
* Decodes ID3 tags.
*
* @param data The bytes to decode ID3 tags from.
* @param size Amount of bytes in {@code data} to read.
* @return A {@link Metadata} object containing the decoded ID3 tags, or null if the data could
* not be decoded.
*/
public @Nullable Metadata decode(byte[] data, int size) {
List<Id3Frame> id3Frames = new ArrayList<>();
ParsableByteArray id3Data = new ParsableByteArray(data, size);
Id3Header id3Header = decodeHeader(id3Data);
if (id3Header == null) {
return null;
}
int startPosition = id3Data.getPosition();
int frameHeaderSize = id3Header.majorVersion == 2 ? 6 : 10;
int framesSize = id3Header.framesSize;
if (id3Header.isUnsynchronized) {
framesSize = removeUnsynchronization(id3Data, id3Header.framesSize);
}
id3Data.setLimit(startPosition + framesSize);
boolean unsignedIntFrameSizeHack = false;
if (!validateFrames(id3Data, id3Header.majorVersion, frameHeaderSize, false)) {
if (id3Header.majorVersion == 4 && validateFrames(id3Data, 4, frameHeaderSize, true)) {
unsignedIntFrameSizeHack = true;
} else {
Log.w(TAG, "Failed to validate ID3 tag with majorVersion=" + id3Header.majorVersion);
return null;
}
}
while (id3Data.bytesLeft() >= frameHeaderSize) {
Id3Frame frame = decodeFrame(id3Header.majorVersion, id3Data, unsignedIntFrameSizeHack,
frameHeaderSize, framePredicate);
if (frame != null) {
id3Frames.add(frame);
}
}
return new Metadata(id3Frames);
}
Example 9
| Source File: VorbisReader.java From Telegram with GNU General Public License v2.0 | 5 votes |
|
@VisibleForTesting
/* package */ static void appendNumberOfSamples(
ParsableByteArray buffer, long packetSampleCount) {
buffer.setLimit(buffer.limit() + 4);
// The vorbis decoder expects the number of samples in the packet
// to be appended to the audio data as an int32
buffer.data[buffer.limit() - 4] = (byte) (packetSampleCount & 0xFF);
buffer.data[buffer.limit() - 3] = (byte) ((packetSampleCount >>> 8) & 0xFF);
buffer.data[buffer.limit() - 2] = (byte) ((packetSampleCount >>> 16) & 0xFF);
buffer.data[buffer.limit() - 1] = (byte) ((packetSampleCount >>> 24) & 0xFF);
}
Example 10
| Source File: Id3Decoder.java From TelePlus-Android with GNU General Public License v2.0 | 5 votes |
|
/**
* Decodes ID3 tags.
*
* @param data The bytes to decode ID3 tags from.
* @param size Amount of bytes in {@code data} to read.
* @return A {@link Metadata} object containing the decoded ID3 tags, or null if the data could
* not be decoded.
*/
public @Nullable Metadata decode(byte[] data, int size) {
List<Id3Frame> id3Frames = new ArrayList<>();
ParsableByteArray id3Data = new ParsableByteArray(data, size);
Id3Header id3Header = decodeHeader(id3Data);
if (id3Header == null) {
return null;
}
int startPosition = id3Data.getPosition();
int frameHeaderSize = id3Header.majorVersion == 2 ? 6 : 10;
int framesSize = id3Header.framesSize;
if (id3Header.isUnsynchronized) {
framesSize = removeUnsynchronization(id3Data, id3Header.framesSize);
}
id3Data.setLimit(startPosition + framesSize);
boolean unsignedIntFrameSizeHack = false;
if (!validateFrames(id3Data, id3Header.majorVersion, frameHeaderSize, false)) {
if (id3Header.majorVersion == 4 && validateFrames(id3Data, 4, frameHeaderSize, true)) {
unsignedIntFrameSizeHack = true;
} else {
Log.w(TAG, "Failed to validate ID3 tag with majorVersion=" + id3Header.majorVersion);
return null;
}
}
while (id3Data.bytesLeft() >= frameHeaderSize) {
Id3Frame frame = decodeFrame(id3Header.majorVersion, id3Data, unsignedIntFrameSizeHack,
frameHeaderSize, framePredicate);
if (frame != null) {
id3Frames.add(frame);
}
}
return new Metadata(id3Frames);
}
Example 11
| Source File: Id3Decoder.java From K-Sonic with MIT License | 5 votes |
|
/**
* Decodes ID3 tags.
*
* @param data The bytes to decode ID3 tags from.
* @param size Amount of bytes in {@code data} to read.
* @return A {@link Metadata} object containing the decoded ID3 tags.
*/
public Metadata decode(byte[] data, int size) {
List<Id3Frame> id3Frames = new ArrayList<>();
ParsableByteArray id3Data = new ParsableByteArray(data, size);
Id3Header id3Header = decodeHeader(id3Data);
if (id3Header == null) {
return null;
}
int startPosition = id3Data.getPosition();
int framesSize = id3Header.framesSize;
if (id3Header.isUnsynchronized) {
framesSize = removeUnsynchronization(id3Data, id3Header.framesSize);
}
id3Data.setLimit(startPosition + framesSize);
boolean unsignedIntFrameSizeHack = false;
if (id3Header.majorVersion == 4) {
if (!validateV4Frames(id3Data, false)) {
if (validateV4Frames(id3Data, true)) {
unsignedIntFrameSizeHack = true;
} else {
Log.w(TAG, "Failed to validate V4 ID3 tag");
return null;
}
}
}
int frameHeaderSize = id3Header.majorVersion == 2 ? 6 : 10;
while (id3Data.bytesLeft() >= frameHeaderSize) {
Id3Frame frame = decodeFrame(id3Header.majorVersion, id3Data, unsignedIntFrameSizeHack,
frameHeaderSize, framePredicate);
if (frame != null) {
id3Frames.add(frame);
}
}
return new Metadata(id3Frames);
}
Example 12
| Source File: VorbisReader.java From K-Sonic with MIT License | 5 votes |
|
static void appendNumberOfSamples(ParsableByteArray buffer,
long packetSampleCount) {
buffer.setLimit(buffer.limit() + 4);
// The vorbis decoder expects the number of samples in the packet
// to be appended to the audio data as an int32
buffer.data[buffer.limit() - 4] = (byte) ((packetSampleCount) & 0xFF);
buffer.data[buffer.limit() - 3] = (byte) ((packetSampleCount >>> 8) & 0xFF);
buffer.data[buffer.limit() - 2] = (byte) ((packetSampleCount >>> 16) & 0xFF);
buffer.data[buffer.limit() - 1] = (byte) ((packetSampleCount >>> 24) & 0xFF);
}
Example 13
| Source File: Sniffer.java From Telegram-FOSS with GNU General Public License v2.0 | 4 votes |
|
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.DEFINES_LARGE_SIZE) {
// Read the large atom size.
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.readLong();
} else if (atomSize == Atom.EXTENDS_TO_END_SIZE) {
// The atom extends to the end of the file.
long fileEndPosition = input.getLength();
if (fileEndPosition != C.LENGTH_UNSET) {
atomSize = fileEndPosition - input.getPeekPosition() + headerSize;
}
}
if (inputLength != C.LENGTH_UNSET && bytesSearched + atomSize > inputLength + 10) { //added small trashhold for buggy files
// The file is invalid because the atom extends past the end of the file.
return false;
}
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) {
// We have seen the moov atom. We increase the search size to make sure we don't miss an
// mvex atom because the moov's size exceeds the search length.
bytesToSearch += (int) atomSize;
if (inputLength != C.LENGTH_UNSET && bytesToSearch > inputLength) {
// Make sure we don't exceed the file size.
bytesToSearch = (int) inputLength;
}
// 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;
}
Example 14
| Source File: PesReader.java From MediaSDK with Apache License 2.0 | 4 votes |
|
@Override
public final void consume(ParsableByteArray data, @Flags int flags) throws ParserException {
if ((flags & FLAG_PAYLOAD_UNIT_START_INDICATOR) != 0) {
switch (state) {
case STATE_FINDING_HEADER:
case STATE_READING_HEADER:
// Expected.
break;
case STATE_READING_HEADER_EXTENSION:
Log.w(TAG, "Unexpected start indicator reading extended header");
break;
case STATE_READING_BODY:
// If payloadSize == -1 then the length of the previous packet was unspecified, and so
// we only know that it's finished now that we've seen the start of the next one. This
// is expected. If payloadSize != -1, then the length of the previous packet was known,
// but we didn't receive that amount of data. This is not expected.
if (payloadSize != -1) {
Log.w(TAG, "Unexpected start indicator: expected " + payloadSize + " more bytes");
}
// Either way, notify the reader that it has now finished.
reader.packetFinished();
break;
default:
throw new IllegalStateException();
}
setState(STATE_READING_HEADER);
}
while (data.bytesLeft() > 0) {
switch (state) {
case STATE_FINDING_HEADER:
data.skipBytes(data.bytesLeft());
break;
case STATE_READING_HEADER:
if (continueRead(data, pesScratch.data, HEADER_SIZE)) {
setState(parseHeader() ? STATE_READING_HEADER_EXTENSION : STATE_FINDING_HEADER);
}
break;
case STATE_READING_HEADER_EXTENSION:
int readLength = Math.min(MAX_HEADER_EXTENSION_SIZE, extendedHeaderLength);
// Read as much of the extended header as we're interested in, and skip the rest.
if (continueRead(data, pesScratch.data, readLength)
&& continueRead(data, null, extendedHeaderLength)) {
parseHeaderExtension();
flags |= dataAlignmentIndicator ? FLAG_DATA_ALIGNMENT_INDICATOR : 0;
reader.packetStarted(timeUs, flags);
setState(STATE_READING_BODY);
}
break;
case STATE_READING_BODY:
readLength = data.bytesLeft();
int padding = payloadSize == -1 ? 0 : readLength - payloadSize;
if (padding > 0) {
readLength -= padding;
data.setLimit(data.getPosition() + readLength);
}
reader.consume(data);
if (payloadSize != -1) {
payloadSize -= readLength;
if (payloadSize == 0) {
reader.packetFinished();
setState(STATE_READING_HEADER);
}
}
break;
default:
throw new IllegalStateException();
}
}
}
Example 15
| Source File: PesReader.java From Telegram-FOSS with GNU General Public License v2.0 | 4 votes |
|
@Override
public final void consume(ParsableByteArray data, @Flags int flags) throws ParserException {
if ((flags & FLAG_PAYLOAD_UNIT_START_INDICATOR) != 0) {
switch (state) {
case STATE_FINDING_HEADER:
case STATE_READING_HEADER:
// Expected.
break;
case STATE_READING_HEADER_EXTENSION:
Log.w(TAG, "Unexpected start indicator reading extended header");
break;
case STATE_READING_BODY:
// If payloadSize == -1 then the length of the previous packet was unspecified, and so
// we only know that it's finished now that we've seen the start of the next one. This
// is expected. If payloadSize != -1, then the length of the previous packet was known,
// but we didn't receive that amount of data. This is not expected.
if (payloadSize != -1) {
Log.w(TAG, "Unexpected start indicator: expected " + payloadSize + " more bytes");
}
// Either way, notify the reader that it has now finished.
reader.packetFinished();
break;
default:
throw new IllegalStateException();
}
setState(STATE_READING_HEADER);
}
while (data.bytesLeft() > 0) {
switch (state) {
case STATE_FINDING_HEADER:
data.skipBytes(data.bytesLeft());
break;
case STATE_READING_HEADER:
if (continueRead(data, pesScratch.data, HEADER_SIZE)) {
setState(parseHeader() ? STATE_READING_HEADER_EXTENSION : STATE_FINDING_HEADER);
}
break;
case STATE_READING_HEADER_EXTENSION:
int readLength = Math.min(MAX_HEADER_EXTENSION_SIZE, extendedHeaderLength);
// Read as much of the extended header as we're interested in, and skip the rest.
if (continueRead(data, pesScratch.data, readLength)
&& continueRead(data, null, extendedHeaderLength)) {
parseHeaderExtension();
flags |= dataAlignmentIndicator ? FLAG_DATA_ALIGNMENT_INDICATOR : 0;
reader.packetStarted(timeUs, flags);
setState(STATE_READING_BODY);
}
break;
case STATE_READING_BODY:
readLength = data.bytesLeft();
int padding = payloadSize == -1 ? 0 : readLength - payloadSize;
if (padding > 0) {
readLength -= padding;
data.setLimit(data.getPosition() + readLength);
}
reader.consume(data);
if (payloadSize != -1) {
payloadSize -= readLength;
if (payloadSize == 0) {
reader.packetFinished();
setState(STATE_READING_HEADER);
}
}
break;
default:
throw new IllegalStateException();
}
}
}
Example 16
| Source File: Sniffer.java From K-Sonic with MIT License | 4 votes |
|
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;
}
Example 17
| Source File: PesReader.java From K-Sonic with MIT License | 4 votes |
|
@Override
public final void consume(ParsableByteArray data, boolean payloadUnitStartIndicator) {
if (payloadUnitStartIndicator) {
switch (state) {
case STATE_FINDING_HEADER:
case STATE_READING_HEADER:
// Expected.
break;
case STATE_READING_HEADER_EXTENSION:
Log.w(TAG, "Unexpected start indicator reading extended header");
break;
case STATE_READING_BODY:
// If payloadSize == -1 then the length of the previous packet was unspecified, and so
// we only know that it's finished now that we've seen the start of the next one. This
// is expected. If payloadSize != -1, then the length of the previous packet was known,
// but we didn't receive that amount of data. This is not expected.
if (payloadSize != -1) {
Log.w(TAG, "Unexpected start indicator: expected " + payloadSize + " more bytes");
}
// Either way, notify the reader that it has now finished.
reader.packetFinished();
break;
}
setState(STATE_READING_HEADER);
}
while (data.bytesLeft() > 0) {
switch (state) {
case STATE_FINDING_HEADER:
data.skipBytes(data.bytesLeft());
break;
case STATE_READING_HEADER:
if (continueRead(data, pesScratch.data, HEADER_SIZE)) {
setState(parseHeader() ? STATE_READING_HEADER_EXTENSION : STATE_FINDING_HEADER);
}
break;
case STATE_READING_HEADER_EXTENSION:
int readLength = Math.min(MAX_HEADER_EXTENSION_SIZE, extendedHeaderLength);
// Read as much of the extended header as we're interested in, and skip the rest.
if (continueRead(data, pesScratch.data, readLength)
&& continueRead(data, null, extendedHeaderLength)) {
parseHeaderExtension();
reader.packetStarted(timeUs, dataAlignmentIndicator);
setState(STATE_READING_BODY);
}
break;
case STATE_READING_BODY:
readLength = data.bytesLeft();
int padding = payloadSize == -1 ? 0 : readLength - payloadSize;
if (padding > 0) {
readLength -= padding;
data.setLimit(data.getPosition() + readLength);
}
reader.consume(data);
if (payloadSize != -1) {
payloadSize -= readLength;
if (payloadSize == 0) {
reader.packetFinished();
setState(STATE_READING_HEADER);
}
}
break;
}
}
}
Example 18
| Source File: PesReader.java From Telegram with GNU General Public License v2.0 | 4 votes |
|
@Override
public final void consume(ParsableByteArray data, @Flags int flags) throws ParserException {
if ((flags & FLAG_PAYLOAD_UNIT_START_INDICATOR) != 0) {
switch (state) {
case STATE_FINDING_HEADER:
case STATE_READING_HEADER:
// Expected.
break;
case STATE_READING_HEADER_EXTENSION:
Log.w(TAG, "Unexpected start indicator reading extended header");
break;
case STATE_READING_BODY:
// If payloadSize == -1 then the length of the previous packet was unspecified, and so
// we only know that it's finished now that we've seen the start of the next one. This
// is expected. If payloadSize != -1, then the length of the previous packet was known,
// but we didn't receive that amount of data. This is not expected.
if (payloadSize != -1) {
Log.w(TAG, "Unexpected start indicator: expected " + payloadSize + " more bytes");
}
// Either way, notify the reader that it has now finished.
reader.packetFinished();
break;
default:
throw new IllegalStateException();
}
setState(STATE_READING_HEADER);
}
while (data.bytesLeft() > 0) {
switch (state) {
case STATE_FINDING_HEADER:
data.skipBytes(data.bytesLeft());
break;
case STATE_READING_HEADER:
if (continueRead(data, pesScratch.data, HEADER_SIZE)) {
setState(parseHeader() ? STATE_READING_HEADER_EXTENSION : STATE_FINDING_HEADER);
}
break;
case STATE_READING_HEADER_EXTENSION:
int readLength = Math.min(MAX_HEADER_EXTENSION_SIZE, extendedHeaderLength);
// Read as much of the extended header as we're interested in, and skip the rest.
if (continueRead(data, pesScratch.data, readLength)
&& continueRead(data, null, extendedHeaderLength)) {
parseHeaderExtension();
flags |= dataAlignmentIndicator ? FLAG_DATA_ALIGNMENT_INDICATOR : 0;
reader.packetStarted(timeUs, flags);
setState(STATE_READING_BODY);
}
break;
case STATE_READING_BODY:
readLength = data.bytesLeft();
int padding = payloadSize == -1 ? 0 : readLength - payloadSize;
if (padding > 0) {
readLength -= padding;
data.setLimit(data.getPosition() + readLength);
}
reader.consume(data);
if (payloadSize != -1) {
payloadSize -= readLength;
if (payloadSize == 0) {
reader.packetFinished();
setState(STATE_READING_HEADER);
}
}
break;
default:
throw new IllegalStateException();
}
}
}
Example 19
| Source File: PesReader.java From TelePlus-Android with GNU General Public License v2.0 | 4 votes |
|
@Override
public final void consume(ParsableByteArray data, boolean payloadUnitStartIndicator)
throws ParserException {
if (payloadUnitStartIndicator) {
switch (state) {
case STATE_FINDING_HEADER:
case STATE_READING_HEADER:
// Expected.
break;
case STATE_READING_HEADER_EXTENSION:
Log.w(TAG, "Unexpected start indicator reading extended header");
break;
case STATE_READING_BODY:
// If payloadSize == -1 then the length of the previous packet was unspecified, and so
// we only know that it's finished now that we've seen the start of the next one. This
// is expected. If payloadSize != -1, then the length of the previous packet was known,
// but we didn't receive that amount of data. This is not expected.
if (payloadSize != -1) {
Log.w(TAG, "Unexpected start indicator: expected " + payloadSize + " more bytes");
}
// Either way, notify the reader that it has now finished.
reader.packetFinished();
break;
}
setState(STATE_READING_HEADER);
}
while (data.bytesLeft() > 0) {
switch (state) {
case STATE_FINDING_HEADER:
data.skipBytes(data.bytesLeft());
break;
case STATE_READING_HEADER:
if (continueRead(data, pesScratch.data, HEADER_SIZE)) {
setState(parseHeader() ? STATE_READING_HEADER_EXTENSION : STATE_FINDING_HEADER);
}
break;
case STATE_READING_HEADER_EXTENSION:
int readLength = Math.min(MAX_HEADER_EXTENSION_SIZE, extendedHeaderLength);
// Read as much of the extended header as we're interested in, and skip the rest.
if (continueRead(data, pesScratch.data, readLength)
&& continueRead(data, null, extendedHeaderLength)) {
parseHeaderExtension();
reader.packetStarted(timeUs, dataAlignmentIndicator);
setState(STATE_READING_BODY);
}
break;
case STATE_READING_BODY:
readLength = data.bytesLeft();
int padding = payloadSize == -1 ? 0 : readLength - payloadSize;
if (padding > 0) {
readLength -= padding;
data.setLimit(data.getPosition() + readLength);
}
reader.consume(data);
if (payloadSize != -1) {
payloadSize -= readLength;
if (payloadSize == 0) {
reader.packetFinished();
setState(STATE_READING_HEADER);
}
}
break;
}
}
}
Example 20
| Source File: Sniffer.java From MediaSDK with Apache License 2.0 | 4 votes |
|
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.DEFINES_LARGE_SIZE) {
// Read the large atom size.
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.readLong();
} else if (atomSize == Atom.EXTENDS_TO_END_SIZE) {
// The atom extends to the end of the file.
long fileEndPosition = input.getLength();
if (fileEndPosition != C.LENGTH_UNSET) {
atomSize = fileEndPosition - input.getPeekPosition() + headerSize;
}
}
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) {
// We have seen the moov atom. We increase the search size to make sure we don't miss an
// mvex atom because the moov's size exceeds the search length.
bytesToSearch += (int) atomSize;
if (inputLength != C.LENGTH_UNSET && bytesToSearch > inputLength) {
// Make sure we don't exceed the file size.
bytesToSearch = (int) inputLength;
}
// 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;
}
