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Merge pull request #3863 from drhill/dev-v2_mkvDIVX

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add h263 format support in fourcc codecID
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ojw28 2018-02-27 11:24:44 +00:00 committed by GitHub
commit 51405c9959
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1 changed files with 29 additions and 28 deletions
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57
library/core/src/main/java/com/google/android/exoplayer2/extractor/mkv/MatroskaExtractor.java
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@ -18,6 +18,7 @@ package com.google.android.exoplayer2.extractor.mkv;
import android.support.annotation.IntDef;
import android.support.annotation.Nullable;
import android.util.Log;
import android.util.Pair;
import android.util.SparseArray;
import com.google.android.exoplayer2.C;
import com.google.android.exoplayer2.Format;
@ -219,6 +220,7 @@ public final class MatroskaExtractor implements Extractor {
private static final int LACING_EBML = 3;
private static final int FOURCC_COMPRESSION_VC1 = 0x31435657;
private static final int FOURCC_COMPRESSION_DIVX = 0x58564944;
/**
* A template for the prefix that must be added to each subrip sample. The 12 byte end timecode
@ -1711,13 +1713,9 @@ public final class MatroskaExtractor implements Extractor {
nalUnitLengthFieldLength = hevcConfig.nalUnitLengthFieldLength;
break;
case CODEC_ID_FOURCC:
initializationData = parseFourCcVc1Private(new ParsableByteArray(codecPrivate));
if (initializationData != null) {
mimeType = MimeTypes.VIDEO_VC1;
} else {
Log.w(TAG, "Unsupported FourCC. Setting mimeType to " + MimeTypes.VIDEO_UNKNOWN);
mimeType = MimeTypes.VIDEO_UNKNOWN;
}
Pair<String, List<byte[]>> pair = parseFourCcPrivate(new ParsableByteArray(codecPrivate));
mimeType = pair.first;
initializationData = pair.second;
break;
case CODEC_ID_THEORA:
// TODO: This can be set to the real mimeType if/when we work out what initializationData
@ -1932,38 +1930,41 @@ public final class MatroskaExtractor implements Extractor {
/**
* Builds initialization data for a {@link Format} from FourCC codec private data.
* <p>
* VC1 is the only supported compression type.
* VC1 and H263 are the only supported compression types.
*
* @return The initialization data for the {@link Format}, or null if the compression type is
* not VC1.
* @return A pair object with the first object being the codec mime type
* and the second object the initialization data for the {@link Format},
* or null if the compression type is not a currently supported type (VC1 or H263).
* @throws ParserException If the initialization data could not be built.
*/
private static List<byte[]> parseFourCcVc1Private(ParsableByteArray buffer)
private static Pair<String, List<byte[]>> parseFourCcPrivate(ParsableByteArray buffer)
throws ParserException {
try {
buffer.skipBytes(16); // size(4), width(4), height(4), planes(2), bitcount(2).
long compression = buffer.readLittleEndianUnsignedInt();
if (compression != FOURCC_COMPRESSION_VC1) {
return null;
}
// Search for the initialization data from the end of the BITMAPINFOHEADER. The last 20
// bytes of which are: sizeImage(4), xPel/m (4), yPel/m (4), clrUsed(4), clrImportant(4).
int startOffset = buffer.getPosition() + 20;
byte[] bufferData = buffer.data;
for (int offset = startOffset; offset < bufferData.length - 4; offset++) {
if (bufferData[offset] == 0x00 && bufferData[offset + 1] == 0x00
&& bufferData[offset + 2] == 0x01 && bufferData[offset + 3] == 0x0F) {
// We've found the initialization data.
byte[] initializationData = Arrays.copyOfRange(bufferData, offset, bufferData.length);
return Collections.singletonList(initializationData);
if (compression == FOURCC_COMPRESSION_DIVX) {
return new Pair<>(MimeTypes.VIDEO_H263, null);
} else if (compression == FOURCC_COMPRESSION_VC1) {
// Search for the initialization data from the end of the BITMAPINFOHEADER. The last 20
// bytes of which are: sizeImage(4), xPel/m (4), yPel/m (4), clrUsed(4), clrImportant(4).
int startOffset = buffer.getPosition() + 20;
byte[] bufferData = buffer.data;
for (int offset = startOffset; offset < bufferData.length - 4; offset++) {
if (bufferData[offset] == 0x00 && bufferData[offset + 1] == 0x00
&& bufferData[offset + 2] == 0x01 && bufferData[offset + 3] == 0x0F) {
// We've found the initialization data.
byte[] initializationData = Arrays.copyOfRange(bufferData, offset, bufferData.length);
return new Pair<>(MimeTypes.VIDEO_VC1, Collections.singletonList(initializationData));
}
}
throw new ParserException("Failed to find FourCC VC1 initialization data");
}
throw new ParserException("Failed to find FourCC VC1 initialization data");
} catch (ArrayIndexOutOfBoundsException e) {
throw new ParserException("Error parsing FourCC VC1 codec private");
throw new ParserException("Error parsing FourCC private data");
}
Log.w(TAG, "Unknown FourCC. Setting mimeType to " + MimeTypes.VIDEO_UNKNOWN);
return new Pair<>(MimeTypes.VIDEO_UNKNOWN, null);
}
/**