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Support non-square pixels in HLS.

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Github issue: #375
This commit is contained in:
Oliver Woodman 2015-04-11 00:59:00 +01:00
parent 37d12ff14a
commit 53a47524a1
1 changed files with 45 additions and 1 deletions
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46
library/src/main/java/com/google/android/exoplayer/extractor/ts/H264Reader.java
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@ -24,6 +24,8 @@ import com.google.android.exoplayer.util.MimeTypes;
import com.google.android.exoplayer.util.ParsableBitArray;
import com.google.android.exoplayer.util.ParsableByteArray;
import android.util.Log;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
@ -33,11 +35,33 @@ import java.util.List;
*/
/* package */ class H264Reader extends ElementaryStreamReader {
private static final String TAG = "H264Reader";
private static final int NAL_UNIT_TYPE_IDR = 5;
private static final int NAL_UNIT_TYPE_SEI = 6;
private static final int NAL_UNIT_TYPE_SPS = 7;
private static final int NAL_UNIT_TYPE_PPS = 8;
private static final int NAL_UNIT_TYPE_AUD = 9;
private static final int EXTENDED_SAR = 0xFF;
private static final float[] ASPECT_RATIO_IDC_VALUES = new float[] {
1f /* Unspecified. Assume square */,
1f,
12f / 11f,
10f / 11f,
16f / 11f,
40f / 33f,
24f / 11f,
20f / 11f,
32f / 11f,
80f / 33f,
18f / 11f,
15f / 11f,
64f / 33f,
160f / 99f,
4f / 3f,
3f / 2f,
2f
};
private final SeiReader seiReader;
private final boolean[] prefixFlags;
@ -244,8 +268,28 @@ import java.util.List;
frameHeight -= (frameCropTopOffset + frameCropBottomOffset) * cropUnitY;
}
float pixelWidthHeightRatio = 1;
boolean vuiParametersPresentFlag = bitArray.readBit();
if (vuiParametersPresentFlag) {
boolean aspectRatioInfoPresentFlag = bitArray.readBit();
if (aspectRatioInfoPresentFlag) {
int aspectRatioIdc = bitArray.readBits(8);
if (aspectRatioIdc == EXTENDED_SAR) {
int sarWidth = bitArray.readBits(16);
int sarHeight = bitArray.readBits(16);
if (sarWidth != 0 && sarHeight != 0) {
pixelWidthHeightRatio = (float) sarWidth / sarHeight;
}
} else if (aspectRatioIdc < ASPECT_RATIO_IDC_VALUES.length) {
pixelWidthHeightRatio = ASPECT_RATIO_IDC_VALUES[aspectRatioIdc];
} else {
Log.w(TAG, "Unexpected aspect_ratio_idc value: " + aspectRatioIdc);
}
}
}
output.format(MediaFormat.createVideoFormat(MimeTypes.VIDEO_H264, MediaFormat.NO_VALUE,
C.UNKNOWN_TIME_US, frameWidth, frameHeight, initializationData));
C.UNKNOWN_TIME_US, frameWidth, frameHeight, pixelWidthHeightRatio, initializationData));
hasOutputFormat = true;
}