loliball/media
1
0
Fork 0
mirror of https://github.com/androidx/media.git synced 2025-05-07 15:40:37 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Fix "Transforming media" page

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
docs/transforming-media.md
View File

@ -37,16 +37,14 @@ Transformer transformer =
.addListener(transformerListener)
.build();
// Start the transformation.
transformer.startTransformation(inputMediaItem, outputPath);
transformer.startTransformation(
new EditedMediaItem(inputMediaItem), outputPath);
~~~
{: .language-java}
Other parameters, such as the `MediaSource.Factory`, can be passed to the
builder.
`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
`startTransformation` receives an `EditedMediaItem` 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
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
@ -65,12 +63,16 @@ app is notified of events via the listener passed to the `Transformer` builder.
Transformer.Listener transformerListener =
new Transformer.Listener() {
@Override
public void onTransformationCompleted(MediaItem inputMediaItem, TransformationResult result) {
public void onTransformationCompleted(
MediaItem inputMediaItem, TransformationResult result) {
playOutput();
}
@Override
public void onTransformationError(MediaItem inputMediaItem, TransformationResult result, TransformationException exception) {
public void onTransformationError(
MediaItem inputMediaItem,
TransformationResult result,
TransformationException exception) {
displayError(e);
}
};
@ -88,13 +90,15 @@ the `updateProgressInUi` method could be implemented to update a progress bar
displayed to the user.
~~~
transformer.startTransformation(inputMediaItem, outputPath);
transformer.startTransformation(
new EditedMediaItem(inputMediaItem), outputPath);
ProgressHolder progressHolder = new ProgressHolder();
mainHandler.post(
new Runnable() {
@Override
public void run() {
@ProgressState int progressState = transformer.getProgress(progressHolder);
@ProgressState int progressState =
transformer.getProgress(progressHolder);
updateProgressInUi(progressState, progressHolder);
if (progressState != PROGRESS_STATE_NOT_STARTED) {
mainHandler.postDelayed(/* r= */ this, /* delayMillis= */ 500);
@ -123,7 +127,8 @@ Transformer transformer =
.setFlattenForSlowMotion(true)
.addListener(transformerListener)
.build();
transformer.startTransformation(inputMediaItem, outputPath);
transformer.startTransformation(
new EditedMediaItem(inputMediaItem), outputPath);
~~~
{: .language-java}