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Fix "Transforming media" page

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Some information there is not correct anymore.

PiperOrigin-RevId: 503141754
This commit is contained in:
kimvde 2023-01-19 13:50:31 +00:00 committed by christosts
parent 4f6b83e2c3
commit ad51d1ca87
1 changed files with 17 additions and 12 deletions
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29
docs/transforming-media.md
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@ -37,16 +37,14 @@ Transformer transformer =
.addListener(transformerListener) .addListener(transformerListener)
.build(); .build();
// Start the transformation. // Start the transformation.
transformer.startTransformation(inputMediaItem, outputPath); transformer.startTransformation(
new EditedMediaItem(inputMediaItem), outputPath);
~~~ ~~~
{: .language-java} {: .language-java}
Other parameters, such as the `MediaSource.Factory`, can be passed to the `startTransformation` receives an `EditedMediaItem` describing the input, and a
builder. path or a `ParcelFileDescriptor` indicating where the output should be written.
The input can be a progressive or an adaptive stream, but the output is always a
`startTransformation` receives a `MediaItem` describing the input, and a path or
a `ParcelFileDescriptor` indicating where the output should be written. The
input can be a progressive or an adaptive stream, but the output is always a
progressive stream. For adaptive inputs, the highest resolution tracks are progressive stream. For adaptive inputs, the highest resolution tracks are
always selected for the transformation. The input can be of any container format always selected for the transformation. The input can be of any container format
supported by ExoPlayer (see the [Supported formats page][] for details), but the supported by ExoPlayer (see the [Supported formats page][] for details), but the
@ -65,12 +63,16 @@ app is notified of events via the listener passed to the `Transformer` builder.
Transformer.Listener transformerListener = Transformer.Listener transformerListener =
new Transformer.Listener() { new Transformer.Listener() {
@Override @Override
public void onTransformationCompleted(MediaItem inputMediaItem, TransformationResult result) { public void onTransformationCompleted(
MediaItem inputMediaItem, TransformationResult result) {
playOutput(); playOutput();
} }
@Override @Override
public void onTransformationError(MediaItem inputMediaItem, TransformationResult result, TransformationException exception) { public void onTransformationError(
MediaItem inputMediaItem,
TransformationResult result,
TransformationException exception) {
displayError(e); displayError(e);
} }
}; };
@ -88,13 +90,15 @@ the `updateProgressInUi` method could be implemented to update a progress bar
displayed to the user. displayed to the user.
~~~ ~~~
transformer.startTransformation(inputMediaItem, outputPath); transformer.startTransformation(
new EditedMediaItem(inputMediaItem), outputPath);
ProgressHolder progressHolder = new ProgressHolder(); ProgressHolder progressHolder = new ProgressHolder();
mainHandler.post( mainHandler.post(
new Runnable() { new Runnable() {
@Override @Override
public void run() { public void run() {
@ProgressState int progressState = transformer.getProgress(progressHolder); @ProgressState int progressState =
transformer.getProgress(progressHolder);
updateProgressInUi(progressState, progressHolder); updateProgressInUi(progressState, progressHolder);
if (progressState != PROGRESS_STATE_NOT_STARTED) { if (progressState != PROGRESS_STATE_NOT_STARTED) {
mainHandler.postDelayed(/* r= */ this, /* delayMillis= */ 500); mainHandler.postDelayed(/* r= */ this, /* delayMillis= */ 500);
@ -123,7 +127,8 @@ Transformer transformer =
.setFlattenForSlowMotion(true) .setFlattenForSlowMotion(true)
.addListener(transformerListener) .addListener(transformerListener)
.build(); .build();
transformer.startTransformation(inputMediaItem, outputPath); transformer.startTransformation(
new EditedMediaItem(inputMediaItem), outputPath);
~~~ ~~~
{: .language-java} {: .language-java}