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Commit ff1efd4e by kimvde Committed by Oliver Woodman
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Add peek() method to ExtractorInput 

PiperOrigin-RevId: 284537150
parent 24afcdc3
Inline Side-by-side
Showing with 281 additions and 66 deletions
library/core/src/main/java/com/google/android/exoplayer2/extractor/DefaultExtractorInput.java
......@@ -58,7 +58,9 @@ public final class DefaultExtractorInput implements ExtractorInput {
public int read(byte[] target, int offset, int length) throws IOException, InterruptedException {
int bytesRead = readFromPeekBuffer(target, offset, length);
if (bytesRead == 0) {
bytesRead = readFromDataSource(target, offset, length, 0, true);
bytesRead =
readFromDataSource(
target, offset, length, /* bytesAlreadyRead= */ 0, /* allowEndOfInput= */ true);
}
commitBytesRead(bytesRead);
return bytesRead;
......@@ -111,6 +113,31 @@ public final class DefaultExtractorInput implements ExtractorInput {
}
@Override
public int peek(byte[] target, int offset, int length) throws IOException, InterruptedException {
ensureSpaceForPeek(length);
int peekBufferRemainingBytes = peekBufferLength - peekBufferPosition;
int bytesPeeked;
if (peekBufferRemainingBytes == 0) {
bytesPeeked =
readFromDataSource(
peekBuffer,
peekBufferPosition,
length,
/* bytesAlreadyRead= */ 0,
/* allowEndOfInput= */ true);
if (bytesPeeked == C.RESULT_END_OF_INPUT) {
return C.RESULT_END_OF_INPUT;
}
peekBufferLength += bytesPeeked;
} else {
bytesPeeked = Math.min(length, peekBufferRemainingBytes);
}
System.arraycopy(peekBuffer, peekBufferPosition, target, offset, bytesPeeked);
peekBufferPosition += bytesPeeked;
return bytesPeeked;
}
@Override
public boolean peekFully(byte[] target, int offset, int length, boolean allowEndOfInput)
throws IOException, InterruptedException {
if (!advancePeekPosition(length, allowEndOfInput)) {
......@@ -201,7 +228,7 @@ public final class DefaultExtractorInput implements ExtractorInput {
}
/**
* Reads from the peek buffer
* Reads from the peek buffer.
*
* @param target A target array into which data should be written.
* @param offset The offset into the target array at which to write.
......
library/core/src/main/java/com/google/android/exoplayer2/extractor/ExtractorInput.java
......@@ -27,19 +27,19 @@ import java.io.InputStream;
* for more info about each mode.
*
* <ul>
* <li>The {@code read()} and {@code skip()} methods provide {@link InputStream}-like byte-level
* access operations.
* <li>The {@code read()/peek()} and {@code skip()} methods provide {@link InputStream}-like
* byte-level access operations.
* <li>The {@code read/skip/peekFully()} and {@code advancePeekPosition()} methods assume the user
* wants to read an entire block/frame/header of known length.
* </ul>
*
* <h3>{@link InputStream}-like methods</h3>
*
* <p>The {@code read()} and {@code skip()} methods provide {@link InputStream}-like byte-level
* access operations. The {@code length} parameter is a maximum, and each method returns the number
* of bytes actually processed. This may be less than {@code length} because the end of the input
* was reached, or the method was interrupted, or the operation was aborted early for another
* reason.
* <p>The {@code read()/peek()} and {@code skip()} methods provide {@link InputStream}-like
* byte-level access operations. The {@code length} parameter is a maximum, and each method returns
* the number of bytes actually processed. This may be less than {@code length} because the end of
* the input was reached, or the method was interrupted, or the operation was aborted early for
* another reason.
*
* <h3>Block-based methods</h3>
*
......@@ -102,7 +102,8 @@ public interface ExtractorInput {
throws IOException, InterruptedException;
/**
* Equivalent to {@code readFully(target, offset, length, false)}.
* Equivalent to {@link #readFully(byte[], int, int, boolean) readFully(target, offset, length,
* false)}.
*
* @param target A target array into which data should be written.
* @param offset The offset into the target array at which to write.
......@@ -155,8 +156,11 @@ public interface ExtractorInput {
void skipFully(int length) throws IOException, InterruptedException;
/**
* Peeks {@code length} bytes from the peek position, writing them into {@code target} at index
* {@code offset}. The current read position is left unchanged.
* Peeks up to {@code length} bytes from the peek position. The current read position is left
* unchanged.
*
* <p>This method blocks until at least one byte of data can be peeked, the end of the input is
* detected, or an exception is thrown.
*
* <p>Calling {@link #resetPeekPosition()} resets the peek position to equal the current read
* position, so the caller can peek the same data again. Reading or skipping also resets the peek
......@@ -164,6 +168,18 @@ public interface ExtractorInput {
*
* @param target A target array into which data should be written.
* @param offset The offset into the target array at which to write.
* @param length The maximum number of bytes to peek from the input.
* @return The number of bytes peeked, or {@link C#RESULT_END_OF_INPUT} if the input has ended.
* @throws IOException If an error occurs peeking from the input.
* @throws InterruptedException If the thread has been interrupted.
*/
int peek(byte[] target, int offset, int length) throws IOException, InterruptedException;
/**
* Like {@link #peek(byte[], int, int)}, but peeks the requested {@code length} in full.
*
* @param target A target array into which data should be written.
* @param offset The offset into the target array at which to write.
* @param length The number of bytes to peek from the input.
* @param allowEndOfInput True if encountering the end of the input having peeked no data is
* allowed, and should result in {@code false} being returned. False if it should be
......@@ -181,12 +197,8 @@ public interface ExtractorInput {
throws IOException, InterruptedException;
/**
* Peeks {@code length} bytes from the peek position, writing them into {@code target} at index
* {@code offset}. The current read position is left unchanged.
* <p>
* Calling {@link #resetPeekPosition()} resets the peek position to equal the current read
* position, so the caller can peek the same data again. Reading and skipping also reset the peek
* position.
* Equivalent to {@link #peekFully(byte[], int, int, boolean) peekFully(target, offset, length,
* false)}.
*
* @param target A target array into which data should be written.
* @param offset The offset into the target array at which to write.
......
library/core/src/test/java/com/google/android/exoplayer2/extractor/DefaultExtractorInputTest.java
......@@ -49,7 +49,7 @@ public class DefaultExtractorInputTest {
}
@Test
public void testRead() throws Exception {
public void testReadMultipleTimes() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
byte[] target = new byte[TEST_DATA.length];
// We expect to perform three reads of three bytes, as setup in buildTestDataSource.
......@@ -60,39 +60,70 @@ public class DefaultExtractorInputTest {
assertThat(bytesRead).isEqualTo(6);
bytesRead += input.read(target, 6, TEST_DATA.length);
assertThat(bytesRead).isEqualTo(9);
// Check the read data is correct.
assertThat(Arrays.equals(TEST_DATA, target)).isTrue();
// Check we're now indicated that the end of input is reached.
int expectedEndOfInput = input.read(target, 0, TEST_DATA.length);
assertThat(expectedEndOfInput).isEqualTo(RESULT_END_OF_INPUT);
assertThat(input.getPosition()).isEqualTo(9);
assertThat(TEST_DATA).isEqualTo(target);
}
@Test
public void testReadPeeked() throws Exception {
public void testReadAlreadyPeeked() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
byte[] target = new byte[TEST_DATA.length];
input.advancePeekPosition(TEST_DATA.length);
int bytesRead = input.read(target, 0, TEST_DATA.length - 1);
assertThat(bytesRead).isEqualTo(TEST_DATA.length - 1);
assertThat(input.getPosition()).isEqualTo(TEST_DATA.length - 1);
assertThat(Arrays.copyOf(TEST_DATA, TEST_DATA.length - 1))
.isEqualTo(Arrays.copyOf(target, TEST_DATA.length - 1));
}
@Test
public void testReadPartiallyPeeked() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
byte[] target = new byte[TEST_DATA.length];
input.advancePeekPosition(TEST_DATA.length - 1);
int bytesRead = input.read(target, 0, TEST_DATA.length);
assertThat(bytesRead).isEqualTo(TEST_DATA.length);
// Check the read data is correct.
assertThat(Arrays.equals(TEST_DATA, target)).isTrue();
assertThat(bytesRead).isEqualTo(TEST_DATA.length - 1);
assertThat(input.getPosition()).isEqualTo(TEST_DATA.length - 1);
assertThat(Arrays.copyOf(TEST_DATA, TEST_DATA.length - 1))
.isEqualTo(Arrays.copyOf(target, TEST_DATA.length - 1));
}
@Test
public void testReadMoreDataPeeked() throws Exception {
public void testReadEndOfInputBeforeFirstByteRead() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
byte[] target = new byte[TEST_DATA.length];
input.advancePeekPosition(TEST_DATA.length);
input.skipFully(TEST_DATA.length);
int bytesRead = input.read(target, 0, TEST_DATA.length);
int bytesRead = input.read(target, 0, TEST_DATA.length + 1);
assertThat(bytesRead).isEqualTo(TEST_DATA.length);
assertThat(bytesRead).isEqualTo(RESULT_END_OF_INPUT);
assertThat(input.getPosition()).isEqualTo(TEST_DATA.length);
}
// Check the read data is correct.
assertThat(Arrays.equals(TEST_DATA, target)).isTrue();
@Test
public void testReadEndOfInputAfterFirstByteRead() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
byte[] target = new byte[TEST_DATA.length];
input.skipFully(TEST_DATA.length - 1);
int bytesRead = input.read(target, 0, TEST_DATA.length);
assertThat(bytesRead).isEqualTo(1);
assertThat(input.getPosition()).isEqualTo(TEST_DATA.length);
}
@Test
public void testReadZeroLength() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
byte[] target = new byte[TEST_DATA.length];
int bytesRead = input.read(target, /* offset= */ 0, /* length= */ 0);
assertThat(bytesRead).isEqualTo(0);
}
@Test
......@@ -101,7 +132,7 @@ public class DefaultExtractorInputTest {
byte[] target = new byte[TEST_DATA.length];
input.readFully(target, 0, TEST_DATA.length);
// Check that we read the whole of TEST_DATA.
assertThat(Arrays.equals(TEST_DATA, target)).isTrue();
assertThat(TEST_DATA).isEqualTo(target);
assertThat(input.getPosition()).isEqualTo(TEST_DATA.length);
// Check that we see end of input if we read again with allowEndOfInput set.
boolean result = input.readFully(target, 0, 1, true);
......@@ -121,11 +152,11 @@ public class DefaultExtractorInputTest {
DefaultExtractorInput input = createDefaultExtractorInput();
byte[] target = new byte[5];
input.readFully(target, 0, 5);
assertThat(Arrays.equals(copyOf(TEST_DATA, 5), target)).isTrue();
assertThat(copyOf(TEST_DATA, 5)).isEqualTo(target);
assertThat(input.getPosition()).isEqualTo(5);
target = new byte[4];
input.readFully(target, 0, 4);
assertThat(Arrays.equals(copyOfRange(TEST_DATA, 5, 9), target)).isTrue();
assertThat(copyOfRange(TEST_DATA, 5, 9)).isEqualTo(target);
assertThat(input.getPosition()).isEqualTo(5 + 4);
}
......@@ -180,27 +211,23 @@ public class DefaultExtractorInputTest {
input.readFully(target, 0, TEST_DATA.length);
// Check the read data is correct.
assertThat(Arrays.equals(TEST_DATA, target)).isTrue();
assertThat(TEST_DATA).isEqualTo(target);
assertThat(input.getPosition()).isEqualTo(TEST_DATA.length);
}
@Test
public void testSkip() throws Exception {
FakeDataSource testDataSource = buildDataSource();
DefaultExtractorInput input = new DefaultExtractorInput(testDataSource, 0, C.LENGTH_UNSET);
public void testSkipMultipleTimes() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
// We expect to perform three skips of three bytes, as setup in buildTestDataSource.
for (int i = 0; i < 3; i++) {
assertThat(input.skip(TEST_DATA.length)).isEqualTo(3);
}
// Check we're now indicated that the end of input is reached.
int expectedEndOfInput = input.skip(TEST_DATA.length);
assertThat(expectedEndOfInput).isEqualTo(RESULT_END_OF_INPUT);
assertThat(input.getPosition()).isEqualTo(TEST_DATA.length);
}
@Test
public void testLargeSkip() throws Exception {
FakeDataSource testDataSource = buildLargeDataSource();
DefaultExtractorInput input = new DefaultExtractorInput(testDataSource, 0, C.LENGTH_UNSET);
DefaultExtractorInput input = createDefaultExtractorInput();
// Check that skipping the entire data source succeeds.
int bytesToSkip = LARGE_TEST_DATA_LENGTH;
while (bytesToSkip > 0) {
......@@ -209,6 +236,59 @@ public class DefaultExtractorInputTest {
}
@Test
public void testSkipAlreadyPeeked() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
input.advancePeekPosition(TEST_DATA.length);
int bytesSkipped = input.skip(TEST_DATA.length - 1);
assertThat(bytesSkipped).isEqualTo(TEST_DATA.length - 1);
assertThat(input.getPosition()).isEqualTo(TEST_DATA.length - 1);
}
@Test
public void testSkipPartiallyPeeked() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
input.advancePeekPosition(TEST_DATA.length - 1);
int bytesSkipped = input.skip(TEST_DATA.length);
assertThat(bytesSkipped).isEqualTo(TEST_DATA.length - 1);
assertThat(input.getPosition()).isEqualTo(TEST_DATA.length - 1);
}
@Test
public void testSkipEndOfInputBeforeFirstByteSkipped() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
input.skipFully(TEST_DATA.length);
int bytesSkipped = input.skip(TEST_DATA.length);
assertThat(bytesSkipped).isEqualTo(RESULT_END_OF_INPUT);
assertThat(input.getPosition()).isEqualTo(TEST_DATA.length);
}
@Test
public void testSkipEndOfInputAfterFirstByteSkipped() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
input.skipFully(TEST_DATA.length - 1);
int bytesSkipped = input.skip(TEST_DATA.length);
assertThat(bytesSkipped).isEqualTo(1);
assertThat(input.getPosition()).isEqualTo(TEST_DATA.length);
}
@Test
public void testSkipZeroLength() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
int bytesRead = input.skip(0);
assertThat(bytesRead).isEqualTo(0);
}
@Test
public void testSkipFullyOnce() throws Exception {
// Skip TEST_DATA.
DefaultExtractorInput input = createDefaultExtractorInput();
......@@ -310,20 +390,100 @@ public class DefaultExtractorInputTest {
}
@Test
public void testPeekMultipleTimes() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
byte[] target = new byte[TEST_DATA.length];
// We expect to perform three peeks of three bytes, as setup in buildTestDataSource.
int bytesPeeked = 0;
bytesPeeked += input.peek(target, 0, TEST_DATA.length);
assertThat(bytesPeeked).isEqualTo(3);
bytesPeeked += input.peek(target, 3, TEST_DATA.length);
assertThat(bytesPeeked).isEqualTo(6);
bytesPeeked += input.peek(target, 6, TEST_DATA.length);
assertThat(bytesPeeked).isEqualTo(9);
assertThat(input.getPeekPosition()).isEqualTo(TEST_DATA.length);
assertThat(TEST_DATA).isEqualTo(target);
}
@Test
public void testPeekAlreadyPeeked() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
byte[] target = new byte[TEST_DATA.length];
input.advancePeekPosition(TEST_DATA.length);
input.resetPeekPosition();
int bytesPeeked = input.peek(target, 0, TEST_DATA.length - 1);
assertThat(bytesPeeked).isEqualTo(TEST_DATA.length - 1);
assertThat(input.getPeekPosition()).isEqualTo(TEST_DATA.length - 1);
assertThat(Arrays.copyOf(TEST_DATA, TEST_DATA.length - 1))
.isEqualTo(Arrays.copyOf(target, TEST_DATA.length - 1));
}
@Test
public void testPeekPartiallyPeeked() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
byte[] target = new byte[TEST_DATA.length];
input.advancePeekPosition(TEST_DATA.length - 1);
input.resetPeekPosition();
int bytesPeeked = input.peek(target, 0, TEST_DATA.length);
assertThat(bytesPeeked).isEqualTo(TEST_DATA.length - 1);
assertThat(Arrays.copyOf(TEST_DATA, TEST_DATA.length - 1))
.isEqualTo(Arrays.copyOf(target, TEST_DATA.length - 1));
}
@Test
public void testPeekEndOfInputBeforeFirstBytePeeked() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
byte[] target = new byte[TEST_DATA.length];
input.advancePeekPosition(TEST_DATA.length);
int bytesPeeked = input.peek(target, 0, TEST_DATA.length);
assertThat(bytesPeeked).isEqualTo(RESULT_END_OF_INPUT);
assertThat(input.getPeekPosition()).isEqualTo(TEST_DATA.length);
}
@Test
public void testPeekEndOfInputAfterFirstBytePeeked() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
byte[] target = new byte[TEST_DATA.length];
input.advancePeekPosition(TEST_DATA.length - 1);
int bytesPeeked = input.peek(target, 0, TEST_DATA.length);
assertThat(bytesPeeked).isEqualTo(1);
assertThat(input.getPeekPosition()).isEqualTo(TEST_DATA.length);
}
@Test
public void testPeekZeroLength() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
byte[] target = new byte[TEST_DATA.length];
int bytesPeeked = input.peek(target, /* offset= */ 0, /* length= */ 0);
assertThat(bytesPeeked).isEqualTo(0);
}
@Test
public void testPeekFully() throws Exception {
DefaultExtractorInput input = createDefaultExtractorInput();
byte[] target = new byte[TEST_DATA.length];
input.peekFully(target, 0, TEST_DATA.length);
// Check that we read the whole of TEST_DATA.
assertThat(Arrays.equals(TEST_DATA, target)).isTrue();
assertThat(TEST_DATA).isEqualTo(target);
assertThat(input.getPosition()).isEqualTo(0);
assertThat(input.getPeekPosition()).isEqualTo(TEST_DATA.length);
// Check that we can read again from the buffer
byte[] target2 = new byte[TEST_DATA.length];
input.readFully(target2, 0, TEST_DATA.length);
assertThat(Arrays.equals(TEST_DATA, target2)).isTrue();
assertThat(TEST_DATA).isEqualTo(target2);
assertThat(input.getPosition()).isEqualTo(TEST_DATA.length);
assertThat(input.getPeekPosition()).isEqualTo(TEST_DATA.length);
......@@ -350,7 +510,7 @@ public class DefaultExtractorInputTest {
input.peekFully(target, /* offset= */ 0, /* length= */ TEST_DATA.length);
assertThat(input.getPeekPosition()).isEqualTo(TEST_DATA.length);
assertThat(Arrays.equals(TEST_DATA, Arrays.copyOf(target, TEST_DATA.length))).isTrue();
assertThat(TEST_DATA).isEqualTo(Arrays.copyOf(target, TEST_DATA.length));
}
@Test
......@@ -360,14 +520,14 @@ public class DefaultExtractorInputTest {
input.peekFully(target, 0, TEST_DATA.length);
// Check that we read the whole of TEST_DATA.
assertThat(Arrays.equals(TEST_DATA, target)).isTrue();
assertThat(TEST_DATA).isEqualTo(target);
assertThat(input.getPosition()).isEqualTo(0);
// Check that we can peek again after resetting.
input.resetPeekPosition();
byte[] target2 = new byte[TEST_DATA.length];
input.peekFully(target2, 0, TEST_DATA.length);
assertThat(Arrays.equals(TEST_DATA, target2)).isTrue();
assertThat(TEST_DATA).isEqualTo(target2);
// Check that we fail with EOFException if we peek past the end of the input.
try {
......
testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeExtractorInput.java
......@@ -65,7 +65,8 @@ public final class FakeExtractorInput implements ExtractorInput {
private int readPosition;
private int peekPosition;
private final SparseBooleanArray partiallySatisfiedTargetPositions;
private final SparseBooleanArray partiallySatisfiedTargetReadPositions;
private final SparseBooleanArray partiallySatisfiedTargetPeekPositions;
private final SparseBooleanArray failedReadPositions;
private final SparseBooleanArray failedPeekPositions;
......@@ -75,7 +76,8 @@ public final class FakeExtractorInput implements ExtractorInput {
this.simulateUnknownLength = simulateUnknownLength;
this.simulatePartialReads = simulatePartialReads;
this.simulateIOErrors = simulateIOErrors;
partiallySatisfiedTargetPositions = new SparseBooleanArray();
partiallySatisfiedTargetReadPositions = new SparseBooleanArray();
partiallySatisfiedTargetPeekPositions = new SparseBooleanArray();
failedReadPositions = new SparseBooleanArray();
failedPeekPositions = new SparseBooleanArray();
}
......@@ -84,7 +86,8 @@ public final class FakeExtractorInput implements ExtractorInput {
public void reset() {
readPosition = 0;
peekPosition = 0;
partiallySatisfiedTargetPositions.clear();
partiallySatisfiedTargetReadPositions.clear();
partiallySatisfiedTargetPeekPositions.clear();
failedReadPositions.clear();
failedPeekPositions.clear();
}
......@@ -104,7 +107,7 @@ public final class FakeExtractorInput implements ExtractorInput {
@Override
public int read(byte[] target, int offset, int length) throws IOException {
checkIOException(readPosition, failedReadPositions);
length = getReadLength(length);
length = getLengthToRead(readPosition, length, partiallySatisfiedTargetReadPositions);
return readFullyInternal(target, offset, length, true) ? length : C.RESULT_END_OF_INPUT;
}
......@@ -123,7 +126,7 @@ public final class FakeExtractorInput implements ExtractorInput {
@Override
public int skip(int length) throws IOException {
checkIOException(readPosition, failedReadPositions);
length = getReadLength(length);
length = getLengthToRead(readPosition, length, partiallySatisfiedTargetReadPositions);
return skipFullyInternal(length, true) ? length : C.RESULT_END_OF_INPUT;
}
......@@ -139,15 +142,17 @@ public final class FakeExtractorInput implements ExtractorInput {
}
@Override
public int peek(byte[] target, int offset, int length) throws IOException {
checkIOException(peekPosition, failedPeekPositions);
length = getLengthToRead(peekPosition, length, partiallySatisfiedTargetPeekPositions);
return peekFullyInternal(target, offset, length, true) ? length : C.RESULT_END_OF_INPUT;
}
@Override
public boolean peekFully(byte[] target, int offset, int length, boolean allowEndOfInput)
throws IOException {
checkIOException(peekPosition, failedPeekPositions);
if (!checkXFully(allowEndOfInput, peekPosition, length)) {
return false;
}
System.arraycopy(data, peekPosition, target, offset, length);
peekPosition += length;
return true;
return peekFullyInternal(target, offset, length, allowEndOfInput);
}
@Override
......@@ -221,18 +226,19 @@ public final class FakeExtractorInput implements ExtractorInput {
return true;
}
private int getReadLength(int requestedLength) {
if (readPosition == data.length) {
private int getLengthToRead(
int position, int requestedLength, SparseBooleanArray partiallySatisfiedTargetPositions) {
if (position == data.length) {
// If the requested length is non-zero, the end of the input will be read.
return requestedLength == 0 ? 0 : Integer.MAX_VALUE;
}
int targetPosition = readPosition + requestedLength;
int targetPosition = position + requestedLength;
if (simulatePartialReads && requestedLength > 1
&& !partiallySatisfiedTargetPositions.get(targetPosition)) {
partiallySatisfiedTargetPositions.put(targetPosition, true);
return 1;
}
return Math.min(requestedLength, data.length - readPosition);
return Math.min(requestedLength, data.length - position);
}
private boolean readFullyInternal(byte[] target, int offset, int length, boolean allowEndOfInput)
......@@ -255,6 +261,16 @@ public final class FakeExtractorInput implements ExtractorInput {
return true;
}
private boolean peekFullyInternal(byte[] target, int offset, int length, boolean allowEndOfInput)
throws EOFException {
if (!checkXFully(allowEndOfInput, peekPosition, length)) {
return false;
}
System.arraycopy(data, peekPosition, target, offset, length);
peekPosition += length;
return true;
}
/**
* Builder of {@link FakeExtractorInput} instances.
*/
......
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