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This logic is currently in the player renderers. With multi-asset, the renderers will go into the AssetLoader, which shouldn't be responsible for muxing. PiperOrigin-RevId: 486860502
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...ansformer/src/main/java/com/google/android/exoplayer2/transformer/BaseSamplePipeline.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| /* | ||
| * Copyright 2022 The Android Open Source Project | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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|
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| package com.google.android.exoplayer2.transformer; | ||
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| import static com.google.android.exoplayer2.util.Assertions.checkStateNotNull; | ||
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| import androidx.annotation.Nullable; | ||
| import com.google.android.exoplayer2.Format; | ||
| import com.google.android.exoplayer2.decoder.DecoderInputBuffer; | ||
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| /* package */ abstract class BaseSamplePipeline implements SamplePipeline { | ||
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| private final int trackType; | ||
| private final long streamStartPositionUs; | ||
| private final MuxerWrapper muxerWrapper; | ||
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| private boolean muxerWrapperTrackAdded; | ||
| private boolean isEnded; | ||
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| public BaseSamplePipeline(int trackType, long streamStartPositionUs, MuxerWrapper muxerWrapper) { | ||
| this.trackType = trackType; | ||
| this.streamStartPositionUs = streamStartPositionUs; | ||
| this.muxerWrapper = muxerWrapper; | ||
| } | ||
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| @Override | ||
| public boolean processData() throws TransformationException { | ||
| return feedMuxer() || processDataUpToMuxer(); | ||
| } | ||
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| @Override | ||
| public boolean isEnded() { | ||
| return isEnded; | ||
| } | ||
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| protected abstract boolean processDataUpToMuxer() throws TransformationException; | ||
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| @Nullable | ||
| protected abstract Format getMuxerInputFormat() throws TransformationException; | ||
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| @Nullable | ||
| protected abstract DecoderInputBuffer getMuxerInputBuffer() throws TransformationException; | ||
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| protected abstract void releaseMuxerInputBuffer() throws TransformationException; | ||
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| protected abstract boolean isMuxerInputEnded(); | ||
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| /** | ||
| * Attempts to pass encoded data to the muxer, and returns whether it may be possible to pass more | ||
| * data immediately by calling this method again. | ||
| */ | ||
| private boolean feedMuxer() throws TransformationException { | ||
| if (!muxerWrapperTrackAdded) { | ||
| @Nullable Format inputFormat = getMuxerInputFormat(); | ||
| if (inputFormat == null) { | ||
| return false; | ||
| } | ||
| try { | ||
| muxerWrapper.addTrackFormat(inputFormat); | ||
| } catch (Muxer.MuxerException e) { | ||
| throw TransformationException.createForMuxer( | ||
| e, TransformationException.ERROR_CODE_MUXING_FAILED); | ||
| } | ||
| muxerWrapperTrackAdded = true; | ||
| } | ||
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| if (isMuxerInputEnded()) { | ||
| muxerWrapper.endTrack(trackType); | ||
| isEnded = true; | ||
| return false; | ||
| } | ||
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| @Nullable DecoderInputBuffer muxerInputBuffer = getMuxerInputBuffer(); | ||
| if (muxerInputBuffer == null) { | ||
| return false; | ||
| } | ||
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| long samplePresentationTimeUs = muxerInputBuffer.timeUs - streamStartPositionUs; | ||
| // TODO(b/204892224): Consider subtracting the first sample timestamp from the sample pipeline | ||
| // buffer from all samples so that they are guaranteed to start from zero in the output file. | ||
| try { | ||
| if (!muxerWrapper.writeSample( | ||
| trackType, | ||
| checkStateNotNull(muxerInputBuffer.data), | ||
| muxerInputBuffer.isKeyFrame(), | ||
| samplePresentationTimeUs)) { | ||
| return false; | ||
| } | ||
| } catch (Muxer.MuxerException e) { | ||
| throw TransformationException.createForMuxer( | ||
| e, TransformationException.ERROR_CODE_MUXING_FAILED); | ||
| } | ||
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| releaseMuxerInputBuffer(); | ||
| return true; | ||
| } | ||
| } |
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