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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.android.exoplayer2.extractor.ogg;
import static com.google.android.exoplayer2.testutil.TestUtil.getByteArray;
import static com.google.common.truth.Truth.assertThat;
import androidx.test.core.app.ApplicationProvider;
import androidx.test.ext.junit.runners.AndroidJUnit4;
import com.google.android.exoplayer2.testutil.FakeExtractorInput;
import com.google.android.exoplayer2.testutil.FakeExtractorInput.SimulatedIOException;
import com.google.android.exoplayer2.testutil.TestUtil;
import org.junit.Test;
import org.junit.runner.RunWith;
/** Unit test for {@link OggPageHeader}. */
@RunWith(AndroidJUnit4.class)
public final class OggPageHeaderTest {
@Test
public void populatePageHeader_success() throws Exception {
byte[] data = getByteArray(ApplicationProvider.getApplicationContext(), "ogg/page_header");
FakeExtractorInput input = createInput(data, /* simulateUnknownLength= */ true);
OggPageHeader header = new OggPageHeader();
populatePageHeader(input, header, /* quiet= */ false);
assertThat(header.type).isEqualTo(0x01);
assertThat(header.headerSize).isEqualTo(27 + 2);
assertThat(header.bodySize).isEqualTo(4);
assertThat(header.pageSegmentCount).isEqualTo(2);
assertThat(header.granulePosition).isEqualTo(123456);
assertThat(header.pageSequenceNumber).isEqualTo(4);
assertThat(header.streamSerialNumber).isEqualTo(0x1000);
assertThat(header.pageChecksum).isEqualTo(0x100000);
assertThat(header.revision).isEqualTo(0);
}
@Test
public void populatePageHeader_withLessThan27Bytes_returnFalseWithoutException()
throws Exception {
FakeExtractorInput input =
createInput(TestUtil.createByteArray(2, 2), /* simulateUnknownLength= */ false);
OggPageHeader header = new OggPageHeader();
assertThat(populatePageHeader(input, header, /* quiet= */ true)).isFalse();
}
@Test
public void populatePageHeader_withNotOgg_returnFalseWithoutException() throws Exception {
byte[] data = getByteArray(ApplicationProvider.getApplicationContext(), "ogg/page_header");
// change from 'O' to 'o'
data[0] = 'o';
FakeExtractorInput input = createInput(data, /* simulateUnknownLength= */ false);
OggPageHeader header = new OggPageHeader();
assertThat(populatePageHeader(input, header, /* quiet= */ true)).isFalse();
}
@Test
public void populatePageHeader_withWrongRevision_returnFalseWithoutException() throws Exception {
byte[] data = getByteArray(ApplicationProvider.getApplicationContext(), "ogg/page_header");
// change revision from 0 to 1
data[4] = 0x01;
FakeExtractorInput input = createInput(data, /* simulateUnknownLength= */ false);
OggPageHeader header = new OggPageHeader();
assertThat(populatePageHeader(input, header, /* quiet= */ true)).isFalse();
}
private static boolean populatePageHeader(
FakeExtractorInput input, OggPageHeader header, boolean quiet) throws Exception {
while (true) {
try {
return header.populate(input, quiet);
} catch (SimulatedIOException e) {
// ignored
}
}
}
private static FakeExtractorInput createInput(byte[] data, boolean simulateUnknownLength) {
return new FakeExtractorInput.Builder()
.setData(data)
.setSimulateIOErrors(true)
.setSimulateUnknownLength(simulateUnknownLength)
.setSimulatePartialReads(true)
.build();
}
}
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