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Refactor getMaxVideoSizeInViewport into TrackSelectionUtil so it can be reused in external code

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This commit is contained in:
Colin Kho 2024-07-25 22:12:15 -07:00 committed by Ian Baker
parent 7d784d4067
commit 0ead7bb221
2 changed files with 29 additions and 27 deletions
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28
libraries/exoplayer/src/main/java/androidx/media3/exoplayer/trackselection/DefaultTrackSelector.java
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@ -3361,7 +3361,7 @@ public class DefaultTrackSelector extends MappingTrackSelector
// smallest to exceed the maximum size at which it can be displayed within the viewport.
if (format.width > 0 && format.height > 0) {
Point maxVideoSizeInViewport =
getMaxVideoSizeInViewport(
TrackSelectionUtil.getMaxVideoSizeInViewport(
orientationMayChange, viewportWidth, viewportHeight, format.width, format.height);
int videoPixels = format.width * format.height;
if (format.width >= (int) (maxVideoSizeInViewport.x * FRACTION_TO_CONSIDER_FULLSCREEN)
@ -3374,32 +3374,6 @@ public class DefaultTrackSelector extends MappingTrackSelector
return maxVideoPixelsToRetain;
}
/**
* Given viewport dimensions and video dimensions, computes the maximum size of the video as it
* will be rendered to fit inside of the viewport.
*/
private static Point getMaxVideoSizeInViewport(
boolean orientationMayChange,
int viewportWidth,
int viewportHeight,
int videoWidth,
int videoHeight) {
if (orientationMayChange && (videoWidth > videoHeight) != (viewportWidth > viewportHeight)) {
// Rotation is allowed, and the video will be larger in the rotated viewport.
int tempViewportWidth = viewportWidth;
viewportWidth = viewportHeight;
viewportHeight = tempViewportWidth;
}
if (videoWidth * viewportHeight >= videoHeight * viewportWidth) {
// Horizontal letter-boxing along top and bottom.
return new Point(viewportWidth, Util.ceilDivide(viewportWidth * videoHeight, videoWidth));
} else {
// Vertical letter-boxing along edges.
return new Point(Util.ceilDivide(viewportHeight * videoWidth, videoHeight), viewportHeight);
}
}
private static int getRoleFlagMatchScore(int trackRoleFlags, int preferredRoleFlags) {
if (trackRoleFlags != 0 && trackRoleFlags == preferredRoleFlags) {
// Prefer perfect match over partial matches.

28
libraries/exoplayer/src/main/java/androidx/media3/exoplayer/trackselection/TrackSelectionUtil.java
View File

@ -15,6 +15,7 @@
*/
package androidx.media3.exoplayer.trackselection;
import android.graphics.Point;
import android.os.SystemClock;
import androidx.annotation.Nullable;
import androidx.media3.common.C;
@ -22,6 +23,7 @@ import androidx.media3.common.TrackGroup;
import androidx.media3.common.Tracks;
import androidx.media3.common.util.NullableType;
import androidx.media3.common.util.UnstableApi;
import androidx.media3.common.util.Util;
import androidx.media3.exoplayer.RendererCapabilities;
import androidx.media3.exoplayer.source.TrackGroupArray;
import androidx.media3.exoplayer.trackselection.DefaultTrackSelector.SelectionOverride;
@ -203,4 +205,30 @@ public final class TrackSelectionUtil {
}
return new Tracks(trackGroups.build());
}
/**
* Given viewport dimensions and video dimensions, computes the maximum size of the video as it
* will be rendered to fit inside of the viewport.
*/
public static Point getMaxVideoSizeInViewport(
boolean orientationMayChange,
int viewportWidth,
int viewportHeight,
int videoWidth,
int videoHeight) {
if (orientationMayChange && (videoWidth > videoHeight) != (viewportWidth > viewportHeight)) {
// Rotation is allowed, and the video will be larger in the rotated viewport.
int tempViewportWidth = viewportWidth;
viewportWidth = viewportHeight;
viewportHeight = tempViewportWidth;
}
if (videoWidth * viewportHeight >= videoHeight * viewportWidth) {
// Horizontal letter-boxing along top and bottom.
return new Point(viewportWidth, Util.ceilDivide(viewportWidth * videoHeight, videoWidth));
} else {
// Vertical letter-boxing along edges.
return new Point(Util.ceilDivide(viewportHeight * videoWidth, videoHeight), viewportHeight);
}
}
}