/*
* Copyright 2023 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 androidx.media3.extractor.bmp;
import androidx.media3.common.MimeTypes;
import androidx.media3.common.util.UnstableApi;
import androidx.media3.extractor.Extractor;
import androidx.media3.extractor.ExtractorInput;
import androidx.media3.extractor.ExtractorOutput;
import androidx.media3.extractor.PositionHolder;
import androidx.media3.extractor.SingleSampleExtractor;
import java.io.IOException;
/** Extracts data from the BMP container format. */
@UnstableApi
public final class BmpExtractor implements Extractor {
private static final int BMP_FILE_SIGNATURE_LENGTH = 2;
private static final int BMP_FILE_SIGNATURE = 0x424D;
private final SingleSampleExtractor imageExtractor;
/** Creates an instance. */
public BmpExtractor() {
imageExtractor =
new SingleSampleExtractor(
BMP_FILE_SIGNATURE, BMP_FILE_SIGNATURE_LENGTH, MimeTypes.IMAGE_BMP);
}
@Override
public boolean sniff(ExtractorInput input) throws IOException {
return imageExtractor.sniff(input);
}
@Override
public void init(ExtractorOutput output) {
imageExtractor.init(output);
}
@Override
public @ReadResult int read(ExtractorInput input, PositionHolder seekPosition)
throws IOException {
return imageExtractor.read(input, seekPosition);
}
@Override
public void seek(long position, long timeUs) {
imageExtractor.seek(position, timeUs);
}
@Override
public void release() {
// Do nothing.
}
}