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Allow exposing ChunkIndex as MediaFormat

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Adds a parameter for exposing chunk indices as MediaFormats.
The parameter is disabled by default.

Bug: 149906115
Bug: 154120292
Test: atest CtsMediaParserTestCases
Change-Id: I2b64cab71edf0496c1ea730b4833fa2f4dbb6aad
This commit is contained in:
Santiago Seifert
2020-06-09 20:56:20 +01:00
parent db853ad3fd
commit d58414732a
1 changed files with 62 additions and 0 deletions
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62
apex/media/framework/java/android/media/MediaParser.java
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@@ -31,6 +31,7 @@ import com.google.android.exoplayer2.C;
import com.google.android.exoplayer2.Format;
import com.google.android.exoplayer2.ParserException;
import com.google.android.exoplayer2.drm.DrmInitData.SchemeData;
import com.google.android.exoplayer2.extractor.ChunkIndex;
import com.google.android.exoplayer2.extractor.DefaultExtractorInput;
import com.google.android.exoplayer2.extractor.Extractor;
import com.google.android.exoplayer2.extractor.ExtractorInput;
@@ -817,6 +818,30 @@ public final class MediaParser {
public static final String PARAMETER_EXPOSE_DUMMY_SEEKMAP =
"android.media.mediaparser.exposeDummySeekMap";
/**
* Sets whether chunk indices available in the extracted media should be exposed as {@link
* MediaFormat MediaFormats}. {@code boolean} expected. Default value is {@link false}.
*
* <p>When set to true, any information about media segmentation will be exposed as a {@link
* MediaFormat} (with track index 0) containing four {@link ByteBuffer} elements under the
* following keys:
*
* <ul>
* <li>"chunk-index-int-sizes": Contains {@code ints} representing the sizes in bytes of each
* of the media segments.
* <li>"chunk-index-long-offsets": Contains {@code longs} representing the byte offsets of
* each segment in the stream.
* <li>"chunk-index-long-us-durations": Contains {@code longs} representing the media duration
* of each segment, in microseconds.
* <li>"chunk-index-long-us-times": Contains {@code longs} representing the start time of each
* segment, in microseconds.
* </ul>
*
* @hide
*/
public static final String PARAMETER_EXPOSE_CHUNK_INDEX_AS_MEDIA_FORMAT =
"android.media.mediaParser.exposeChunkIndexAsMediaFormat";
// Private constants.
private static final String TAG = "MediaParser";
@@ -980,6 +1005,7 @@ public final class MediaParser {
private boolean mIgnoreTimestampOffset;
private boolean mEagerlyExposeTrackType;
private boolean mExposeDummySeekMap;
private boolean mExposeChunkIndexAsMediaFormat;
private String mParserName;
private Extractor mExtractor;
private ExtractorInput mExtractorInput;
@@ -1042,6 +1068,9 @@ public final class MediaParser {
if (PARAMETER_EXPOSE_DUMMY_SEEKMAP.equals(parameterName)) {
mExposeDummySeekMap = (boolean) value;
}
if (PARAMETER_EXPOSE_CHUNK_INDEX_AS_MEDIA_FORMAT.equals(parameterName)) {
mExposeChunkIndexAsMediaFormat = (boolean) value;
}
mParserParameters.put(parameterName, value);
return this;
}
@@ -1436,6 +1465,19 @@ public final class MediaParser {
@Override
public void seekMap(com.google.android.exoplayer2.extractor.SeekMap exoplayerSeekMap) {
if (mExposeChunkIndexAsMediaFormat && exoplayerSeekMap instanceof ChunkIndex) {
ChunkIndex chunkIndex = (ChunkIndex) exoplayerSeekMap;
MediaFormat mediaFormat = new MediaFormat();
mediaFormat.setByteBuffer("chunk-index-int-sizes", toByteBuffer(chunkIndex.sizes));
mediaFormat.setByteBuffer(
"chunk-index-long-offsets", toByteBuffer(chunkIndex.offsets));
mediaFormat.setByteBuffer(
"chunk-index-long-us-durations", toByteBuffer(chunkIndex.durationsUs));
mediaFormat.setByteBuffer(
"chunk-index-long-us-times", toByteBuffer(chunkIndex.timesUs));
mOutputConsumer.onTrackDataFound(
/* trackIndex= */ 0, new TrackData(mediaFormat, /* drmInitData= */ null));
}
mOutputConsumer.onSeekMapFound(new SeekMap(exoplayerSeekMap));
}
}
@@ -1823,6 +1865,24 @@ public final class MediaParser {
return result;
}
private static ByteBuffer toByteBuffer(long[] longArray) {
ByteBuffer byteBuffer = ByteBuffer.allocateDirect(longArray.length * Long.BYTES);
for (long element : longArray) {
byteBuffer.putLong(element);
}
byteBuffer.flip();
return byteBuffer;
}
private static ByteBuffer toByteBuffer(int[] intArray) {
ByteBuffer byteBuffer = ByteBuffer.allocateDirect(intArray.length * Integer.BYTES);
for (int element : intArray) {
byteBuffer.putInt(element);
}
byteBuffer.flip();
return byteBuffer;
}
private static String toTypeString(int type) {
switch (type) {
case C.TRACK_TYPE_VIDEO:
@@ -1979,6 +2039,8 @@ public final class MediaParser {
expectedTypeByParameterName.put(PARAMETER_IGNORE_TIMESTAMP_OFFSET, Boolean.class);
expectedTypeByParameterName.put(PARAMETER_EAGERLY_EXPOSE_TRACKTYPE, Boolean.class);
expectedTypeByParameterName.put(PARAMETER_EXPOSE_DUMMY_SEEKMAP, Boolean.class);
expectedTypeByParameterName.put(
PARAMETER_EXPOSE_CHUNK_INDEX_AS_MEDIA_FORMAT, Boolean.class);
EXPECTED_TYPE_BY_PARAMETER_NAME = Collections.unmodifiableMap(expectedTypeByParameterName);
}
}