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fix: audio wav and mp4 audio and bypass if fail
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112 changes: 112 additions & 0 deletions
112
android/src/main/java/com/reactnativecompressor/Audio/AudioExtractor.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| package com.reactnativecompressor.Audio | ||
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| import android.annotation.SuppressLint | ||
| import android.media.MediaCodec | ||
| import android.media.MediaExtractor | ||
| import android.media.MediaFormat | ||
| import android.media.MediaMetadataRetriever | ||
| import android.media.MediaMuxer | ||
| import android.util.Log | ||
| import java.io.IOException | ||
| import java.nio.ByteBuffer | ||
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| class AudioExtractor { | ||
| /** | ||
| * @param srcPath the path of source video file. | ||
| * @param dstPath the path of destination video file. | ||
| * @param startMs starting time in milliseconds for trimming. Set to | ||
| * negative if starting from beginning. | ||
| * @param endMs end time for trimming in milliseconds. Set to negative if | ||
| * no trimming at the end. | ||
| * @param useAudio true if keep the audio track from the source. | ||
| * @param useVideo true if keep the video track from the source. | ||
| * @throws IOException | ||
| */ | ||
| @SuppressLint("NewApi", "WrongConstant") | ||
| @Throws(IOException::class) | ||
| fun genVideoUsingMuxer(srcPath: String?, dstPath: String?, startMs: Int, endMs: Int, useAudio: Boolean, useVideo: Boolean) { | ||
| // Set up MediaExtractor to read from the source. | ||
| val extractor = MediaExtractor() | ||
| extractor.setDataSource(srcPath!!) | ||
| val trackCount = extractor.trackCount | ||
| // Set up MediaMuxer for the destination. | ||
| val muxer: MediaMuxer | ||
| muxer = MediaMuxer(dstPath!!, MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4) | ||
| // Set up the tracks and retrieve the max buffer size for selected | ||
| // tracks. | ||
| val indexMap = HashMap<Int, Int>(trackCount) | ||
| var bufferSize = -1 | ||
| for (i in 0 until trackCount) { | ||
| val format = extractor.getTrackFormat(i) | ||
| val mime = format.getString(MediaFormat.KEY_MIME) | ||
| var selectCurrentTrack = false | ||
| if (mime!!.startsWith("audio/") && useAudio) { | ||
| selectCurrentTrack = true | ||
| } else if (mime.startsWith("video/") && useVideo) { | ||
| selectCurrentTrack = true | ||
| } | ||
| if (selectCurrentTrack) { | ||
| extractor.selectTrack(i) | ||
| val dstIndex = muxer.addTrack(format) | ||
| indexMap[i] = dstIndex | ||
| if (format.containsKey(MediaFormat.KEY_MAX_INPUT_SIZE)) { | ||
| val newSize = format.getInteger(MediaFormat.KEY_MAX_INPUT_SIZE) | ||
| bufferSize = if (newSize > bufferSize) newSize else bufferSize | ||
| } | ||
| } | ||
| } | ||
| if (bufferSize < 0) { | ||
| bufferSize = DEFAULT_BUFFER_SIZE | ||
| } | ||
| // Set up the orientation and starting time for extractor. | ||
| val retrieverSrc = MediaMetadataRetriever() | ||
| retrieverSrc.setDataSource(srcPath) | ||
| val degreesString = retrieverSrc.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION) | ||
| if (degreesString != null) { | ||
| val degrees = degreesString.toInt() | ||
| if (degrees >= 0) { | ||
| muxer.setOrientationHint(degrees) | ||
| } | ||
| } | ||
| if (startMs > 0) { | ||
| extractor.seekTo((startMs * 1000).toLong(), MediaExtractor.SEEK_TO_CLOSEST_SYNC) | ||
| } | ||
| // Copy the samples from MediaExtractor to MediaMuxer. We will loop | ||
| // for copying each sample and stop when we get to the end of the source | ||
| // file or exceed the end time of the trimming. | ||
| val offset = 0 | ||
| var trackIndex = -1 | ||
| val dstBuf = ByteBuffer.allocate(bufferSize) | ||
| val bufferInfo = MediaCodec.BufferInfo() | ||
| muxer.start() | ||
| while (true) { | ||
| bufferInfo.offset = offset | ||
| bufferInfo.size = extractor.readSampleData(dstBuf, offset) | ||
| if (bufferInfo.size < 0) { | ||
| Log.d(TAG, "Saw input EOS.") | ||
| bufferInfo.size = 0 | ||
| break | ||
| } else { | ||
| bufferInfo.presentationTimeUs = extractor.sampleTime | ||
| if (endMs > 0 && bufferInfo.presentationTimeUs > endMs * 1000) { | ||
| Log.d(TAG, "The current sample is over the trim end time.") | ||
| break | ||
| } else { | ||
| bufferInfo.flags = extractor.sampleFlags | ||
| trackIndex = extractor.sampleTrackIndex | ||
| muxer.writeSampleData(indexMap[trackIndex]!!, dstBuf, bufferInfo) | ||
| extractor.advance() | ||
| } | ||
| } | ||
| } | ||
| muxer.stop() | ||
| muxer.release() | ||
| return | ||
| } | ||
|
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| companion object { | ||
| private const val DEFAULT_BUFFER_SIZE = 1 * 1024 * 1024 | ||
| private const val TAG = "AudioExtractorDecoder" | ||
| } | ||
| } |
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