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Simplify DASH live presentation delay override

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This commit is contained in:
Oliver Woodman 2018-07-23 10:39:02 +01:00
parent 58fcf52b17
commit 41345dcb83
1 changed files with 60 additions and 53 deletions
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111
library/dash/src/main/java/com/google/android/exoplayer2/source/dash/DashMediaSource.java
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@ -79,7 +79,7 @@ public final class DashMediaSource extends BaseMediaSource {
private CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory; private CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory;
private int minLoadableRetryCount; private int minLoadableRetryCount;
private long livePresentationDelayMs; private long livePresentationDelayMs;
private long defaultLivePresentationDelayMs; private boolean livePresentationDelayOverridesManifest;
private boolean isCreateCalled; private boolean isCreateCalled;
private @Nullable Object tag; private @Nullable Object tag;
@ -98,8 +98,7 @@ public final class DashMediaSource extends BaseMediaSource {
this.chunkSourceFactory = Assertions.checkNotNull(chunkSourceFactory); this.chunkSourceFactory = Assertions.checkNotNull(chunkSourceFactory);
this.manifestDataSourceFactory = manifestDataSourceFactory; this.manifestDataSourceFactory = manifestDataSourceFactory;
minLoadableRetryCount = DEFAULT_MIN_LOADABLE_RETRY_COUNT; minLoadableRetryCount = DEFAULT_MIN_LOADABLE_RETRY_COUNT;
livePresentationDelayMs = DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS; livePresentationDelayMs = DEFAULT_LIVE_PRESENTATION_DELAY_MS;
defaultLivePresentationDelayMs = DEFAULT_LIVE_PRESENTATION_DELAY_FIXED_MS;
compositeSequenceableLoaderFactory = new DefaultCompositeSequenceableLoaderFactory(); compositeSequenceableLoaderFactory = new DefaultCompositeSequenceableLoaderFactory();
} }
@ -132,41 +131,36 @@ public final class DashMediaSource extends BaseMediaSource {
return this; return this;
} }
/** /** @deprecated Use {@link #setLivePresentationDelayMs(long, boolean)}. */
* Sets the duration in milliseconds by which the default start position should precede the end @Deprecated
* of the live window for live playbacks. The default value is {@link @SuppressWarnings("deprecation")
* #DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS}.
*
* @param livePresentationDelayMs For live playbacks, the duration in milliseconds by which the
* default start position should precede the end of the live window. Use {@link
* #DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS} to use the value specified by the
* manifest, if present.
* @return This factory, for convenience.
* @throws IllegalStateException If one of the {@code create} methods has already been called.
*/
public Factory setLivePresentationDelayMs(long livePresentationDelayMs) { public Factory setLivePresentationDelayMs(long livePresentationDelayMs) {
Assertions.checkState(!isCreateCalled); if (livePresentationDelayMs == DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS) {
this.livePresentationDelayMs = livePresentationDelayMs; return setLivePresentationDelayMs(DEFAULT_LIVE_PRESENTATION_DELAY_MS, false);
return this; } else {
return setLivePresentationDelayMs(livePresentationDelayMs, true);
}
} }
/** /**
* Sets the duration in milliseconds by which the default start position should precede the end * Sets the duration in milliseconds by which the default start position should precede the end
* of the live window for live playbacks if the value is not present in the manifest. * of the live window for live playbacks. The {@code overridesManifest} parameter specifies
* The default value is {@link #DEFAULT_LIVE_PRESENTATION_DELAY_FIXED_MS}. This value is only * whether the value is used in preference to one in the manifest, if present. The default value
* used when {@link setLivePresentationDelayMs} has not overwritten the presentation delay to a * is {@link #DEFAULT_LIVE_PRESENTATION_DELAY_MS}, and by default {@code overridesManifest} is
* value other than #DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS * false.
* *
* @param defaultLivePresentationDelayMs For live playbacks, the duration in milliseconds by * @param livePresentationDelayMs For live playbacks, the duration in milliseconds by which the
* which the default start position should precede the end of the live window if the * default start position should precede the end of the live window.
* duration is not specifed in the manifest or overwritten using * @param overridesManifest Whether the value is used in preference to one in the manifest, if
* {@link setLivePresentationDelayMs}. * present.
* @return This factory, for convenience. * @return This factory, for convenience.
* @throws IllegalStateException If one of the {@code create} methods has already been called. * @throws IllegalStateException If one of the {@code create} methods has already been called.
*/ */
public Factory setDefaultLivePresentationDelayMs(long defaultLivePresentationDelayMs) { public Factory setLivePresentationDelayMs(
long livePresentationDelayMs, boolean overridesManifest) {
Assertions.checkState(!isCreateCalled); Assertions.checkState(!isCreateCalled);
this.defaultLivePresentationDelayMs = defaultLivePresentationDelayMs; this.livePresentationDelayMs = livePresentationDelayMs;
this.livePresentationDelayOverridesManifest = overridesManifest;
return this; return this;
} }
@ -223,7 +217,7 @@ public final class DashMediaSource extends BaseMediaSource {
compositeSequenceableLoaderFactory, compositeSequenceableLoaderFactory,
minLoadableRetryCount, minLoadableRetryCount,
livePresentationDelayMs, livePresentationDelayMs,
defaultLivePresentationDelayMs, livePresentationDelayOverridesManifest,
tag); tag);
} }
@ -264,7 +258,7 @@ public final class DashMediaSource extends BaseMediaSource {
compositeSequenceableLoaderFactory, compositeSequenceableLoaderFactory,
minLoadableRetryCount, minLoadableRetryCount,
livePresentationDelayMs, livePresentationDelayMs,
defaultLivePresentationDelayMs, livePresentationDelayOverridesManifest,
tag); tag);
} }
@ -294,18 +288,18 @@ public final class DashMediaSource extends BaseMediaSource {
* The default minimum number of times to retry loading data prior to failing. * The default minimum number of times to retry loading data prior to failing.
*/ */
public static final int DEFAULT_MIN_LOADABLE_RETRY_COUNT = 3; public static final int DEFAULT_MIN_LOADABLE_RETRY_COUNT = 3;
/** /**
* A constant indicating that the presentation delay for live streams should be set to * The default presentation delay for live streams. The presentation delay is the duration by
* {@link DashManifest#suggestedPresentationDelayMs} if specified by the manifest, or * which the default start position precedes the end of the live window.
* {@link #DEFAULT_LIVE_PRESENTATION_DELAY_FIXED_MS} otherwise. The presentation delay is the
* duration by which the default start position precedes the end of the live window.
*/ */
public static final long DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS = -1; public static final long DEFAULT_LIVE_PRESENTATION_DELAY_MS = 30000;
/** /** @deprecated Use {@link #DEFAULT_LIVE_PRESENTATION_DELAY_MS}. */
* A fixed default presentation delay for live streams. The presentation delay is the duration @Deprecated
* by which the default start position precedes the end of the live window. public static final long DEFAULT_LIVE_PRESENTATION_DELAY_FIXED_MS =
*/ DEFAULT_LIVE_PRESENTATION_DELAY_MS;
public static final long DEFAULT_LIVE_PRESENTATION_DELAY_FIXED_MS = 30000; /** @deprecated Use of this parameter is no longer necessary. */
@Deprecated public static final long DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS = -1;
/** /**
* The interval in milliseconds between invocations of {@link * The interval in milliseconds between invocations of {@link
@ -326,7 +320,7 @@ public final class DashMediaSource extends BaseMediaSource {
private final CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory; private final CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory;
private final int minLoadableRetryCount; private final int minLoadableRetryCount;
private final long livePresentationDelayMs; private final long livePresentationDelayMs;
private final long defaultLivePresentationDelayMs; private final boolean livePresentationDelayOverridesManifest;
private final EventDispatcher manifestEventDispatcher; private final EventDispatcher manifestEventDispatcher;
private final ParsingLoadable.Parser<? extends DashManifest> manifestParser; private final ParsingLoadable.Parser<? extends DashManifest> manifestParser;
private final ManifestCallback manifestCallback; private final ManifestCallback manifestCallback;
@ -369,6 +363,7 @@ public final class DashMediaSource extends BaseMediaSource {
* @deprecated Use {@link Factory} instead. * @deprecated Use {@link Factory} instead.
*/ */
@Deprecated @Deprecated
@SuppressWarnings("deprecation")
public DashMediaSource( public DashMediaSource(
DashManifest manifest, DashManifest manifest,
DashChunkSource.Factory chunkSourceFactory, DashChunkSource.Factory chunkSourceFactory,
@ -403,8 +398,8 @@ public final class DashMediaSource extends BaseMediaSource {
chunkSourceFactory, chunkSourceFactory,
new DefaultCompositeSequenceableLoaderFactory(), new DefaultCompositeSequenceableLoaderFactory(),
minLoadableRetryCount, minLoadableRetryCount,
DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS, DEFAULT_LIVE_PRESENTATION_DELAY_MS,
DEFAULT_LIVE_PRESENTATION_DELAY_FIXED_MS, /* livePresentationDelayOverridesManifest= */ false,
/* tag= */ null); /* tag= */ null);
if (eventHandler != null && eventListener != null) { if (eventHandler != null && eventListener != null) {
addEventListener(eventHandler, eventListener); addEventListener(eventHandler, eventListener);
@ -424,6 +419,7 @@ public final class DashMediaSource extends BaseMediaSource {
* @deprecated Use {@link Factory} instead. * @deprecated Use {@link Factory} instead.
*/ */
@Deprecated @Deprecated
@SuppressWarnings("deprecation")
public DashMediaSource( public DashMediaSource(
Uri manifestUri, Uri manifestUri,
DataSource.Factory manifestDataSourceFactory, DataSource.Factory manifestDataSourceFactory,
@ -453,6 +449,7 @@ public final class DashMediaSource extends BaseMediaSource {
* @deprecated Use {@link Factory} instead. * @deprecated Use {@link Factory} instead.
*/ */
@Deprecated @Deprecated
@SuppressWarnings("deprecation")
public DashMediaSource( public DashMediaSource(
Uri manifestUri, Uri manifestUri,
DataSource.Factory manifestDataSourceFactory, DataSource.Factory manifestDataSourceFactory,
@ -461,8 +458,15 @@ public final class DashMediaSource extends BaseMediaSource {
long livePresentationDelayMs, long livePresentationDelayMs,
Handler eventHandler, Handler eventHandler,
MediaSourceEventListener eventListener) { MediaSourceEventListener eventListener) {
this(manifestUri, manifestDataSourceFactory, new DashManifestParser(), chunkSourceFactory, this(
minLoadableRetryCount, livePresentationDelayMs, eventHandler, eventListener); manifestUri,
manifestDataSourceFactory,
new DashManifestParser(),
chunkSourceFactory,
minLoadableRetryCount,
livePresentationDelayMs,
eventHandler,
eventListener);
} }
/** /**
@ -484,6 +488,7 @@ public final class DashMediaSource extends BaseMediaSource {
* @deprecated Use {@link Factory} instead. * @deprecated Use {@link Factory} instead.
*/ */
@Deprecated @Deprecated
@SuppressWarnings("deprecation")
public DashMediaSource( public DashMediaSource(
Uri manifestUri, Uri manifestUri,
DataSource.Factory manifestDataSourceFactory, DataSource.Factory manifestDataSourceFactory,
@ -501,8 +506,10 @@ public final class DashMediaSource extends BaseMediaSource {
chunkSourceFactory, chunkSourceFactory,
new DefaultCompositeSequenceableLoaderFactory(), new DefaultCompositeSequenceableLoaderFactory(),
minLoadableRetryCount, minLoadableRetryCount,
livePresentationDelayMs, livePresentationDelayMs == DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS
DEFAULT_LIVE_PRESENTATION_DELAY_FIXED_MS, ? DEFAULT_LIVE_PRESENTATION_DELAY_MS
: livePresentationDelayMs,
livePresentationDelayMs != DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS,
/* tag= */ null); /* tag= */ null);
if (eventHandler != null && eventListener != null) { if (eventHandler != null && eventListener != null) {
addEventListener(eventHandler, eventListener); addEventListener(eventHandler, eventListener);
@ -518,7 +525,7 @@ public final class DashMediaSource extends BaseMediaSource {
CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory, CompositeSequenceableLoaderFactory compositeSequenceableLoaderFactory,
int minLoadableRetryCount, int minLoadableRetryCount,
long livePresentationDelayMs, long livePresentationDelayMs,
long defaultLivePresentationDelayMs, boolean livePresentationDelayOverridesManifest,
@Nullable Object tag) { @Nullable Object tag) {
this.initialManifestUri = manifestUri; this.initialManifestUri = manifestUri;
this.manifest = manifest; this.manifest = manifest;
@ -528,7 +535,7 @@ public final class DashMediaSource extends BaseMediaSource {
this.chunkSourceFactory = chunkSourceFactory; this.chunkSourceFactory = chunkSourceFactory;
this.minLoadableRetryCount = minLoadableRetryCount; this.minLoadableRetryCount = minLoadableRetryCount;
this.livePresentationDelayMs = livePresentationDelayMs; this.livePresentationDelayMs = livePresentationDelayMs;
this.defaultLivePresentationDelayMs = defaultLivePresentationDelayMs; this.livePresentationDelayOverridesManifest = livePresentationDelayOverridesManifest;
this.compositeSequenceableLoaderFactory = compositeSequenceableLoaderFactory; this.compositeSequenceableLoaderFactory = compositeSequenceableLoaderFactory;
this.tag = tag; this.tag = tag;
sideloadedManifest = manifest != null; sideloadedManifest = manifest != null;
@ -912,9 +919,9 @@ public final class DashMediaSource extends BaseMediaSource {
long windowDefaultStartPositionUs = 0; long windowDefaultStartPositionUs = 0;
if (manifest.dynamic) { if (manifest.dynamic) {
long presentationDelayForManifestMs = livePresentationDelayMs; long presentationDelayForManifestMs = livePresentationDelayMs;
if (presentationDelayForManifestMs == DEFAULT_LIVE_PRESENTATION_DELAY_PREFER_MANIFEST_MS) { if (!livePresentationDelayOverridesManifest
presentationDelayForManifestMs = manifest.suggestedPresentationDelayMs != C.TIME_UNSET && manifest.suggestedPresentationDelayMs != C.TIME_UNSET) {
? manifest.suggestedPresentationDelayMs : defaultLivePresentationDelayMs; presentationDelayForManifestMs = manifest.suggestedPresentationDelayMs;
} }
// Snap the default position to the start of the segment containing it. // Snap the default position to the start of the segment containing it.
windowDefaultStartPositionUs = windowDurationUs - C.msToUs(presentationDelayForManifestMs); windowDefaultStartPositionUs = windowDurationUs - C.msToUs(presentationDelayForManifestMs);